Price of concrete mixing plant influences

The main factors of the price of concrete mixing plant:

1, the type of concrete mixing plant. Currently the type of concrete mixing plant used in a variety of different types of equipment, its manufacturing process and performance are different, then the price is different.

2, the concrete mixing plant manufacturers. Different manufacturers of concrete mixing plant prices are different, and its technology and other processes are different. Generally large enterprises produce equipment, than small businesses to expensive, mainly because the atmosphere, enterprises in the production process, quality and many other aspects are better than small businesses.

3, the degree of automation equipment. Automatic equipment than the average higher than many. Generally consume more manpower, then the machinery will be relatively cheaper. From the long-term goal to consider the group of automatic equipment more savings.

Above is only its own concrete mixing station analysis of the existence of subjective factors, the impact of its price factors, there are many, such as gasoline prices, steel prices, prices and other factors, there is the same piece of equipment in different regions of the price may not the same. The purchase of concrete mixing station users, the best shop around, choose a reputable manufacturers.

batching plant price

batching plant prices are high and low, in the purchase of concrete mixing station, the user must choose a good product, such as improper selection, in addition to users to bear the unnecessary one-time high procurement costs, but also throughout the life of heavy Of the cost, such as low efficiency, high energy consumption, high operating costs, poor product quality, and even equipment, simply can not run properly. Similarly, different materials on the control means requirements are also quite different.

In addition, attention to the amplification of equipment research. Enlargement involves fluid mechanics, mechanics, thermodynamics, materials science, dust, electrical, control and other disciplines. In this regard, largely depends on the industrial experience, mastery of material properties and equipment awareness. In the amplification process may occur in the phenomenon should be rational, objective prediction, and can propose the corresponding program. The so-called amplification effect, that is, master the drying theory, drying technology at the same time, pay attention to the accumulation of practical experience, lessons learned.

How to choose a concrete mixer

In the construction,Certainly is the concrete mixer this kind of machine, if lets the artificial labor to operate stirs the concrete must be a kind of waste of time and energy practice. So the concrete mixer appeared, but the concrete mixer also have to have a certain choice, concrete mixer which is better?

We choose the right to be able to apply the better, to enhance the efficiency of production and improve efficiency. For the choice of such a large and long working hours, heavy tasks of the machine, in general, is certainly need to pay attention to the price, after all, is a penny, if in order to covet cheap, such concrete mixer material selection Will not be very good, very easy to use up problems.

In addition to this point, the concrete mixer how to choose Another point is about the construction site on the top of the mixer to choose what kind of mixing. For example, there are dry powder, liquid, solid-liquid mixing, etc., different materials in the choice of mixing machine is definitely different, not all of the blender can be done together, it will bring a certain mixer Burden.

Finally, select the concrete mixer is to look at the use of the mixer, the mixer how to use the results. How much concrete can be stirred each hour in the end, the production efficiency in the end how to better determine whether such a mixer and the appropriate use of the site above. Some projects need to do fast, time is pressing, so the choice of mixer is certainly has a certain limit.

Composition of main unit of concrete mixing plant

1, concrete mixer: According to the requirements of the construction schedule, the capacity of concrete mixing plant: 60m3 / h, accordingly selected host 1500 concrete mixer. In view of the company's management model, if necessary, from the adjacent work area seconded concrete emergency use.

2, cement transport equipment: mixing station using bulk cement, a total of three 100T bulk cement tank. The transportation of cement is mainly supplied by cement manufacturers.

3, sand, stone, admixture, water storage and transportation equipment: mixing station with 45m × 18m × 1.8m of sand, stone piled material storage yard, equipped with two XG951 Xigong loader stacker and the mixer bone Silo loading. The silo is located on the ground with an inclination of 4% of the horizontal slope, a 30cm × 30cm drain in the hopper, and a reinforcing bar on the drain, which is convenient for the loader to pass through. M10 external walls and walls using M10 mortar pulp puzzle stone, a height of 1.8m, thickness of not less than 50cm. 2.6m × 1.5m × 1.5m with a special additive pool, easy to store and handle. A special pool of 2.6m × 5m × 1.5m is provided as a spare pool.

4, concrete transport equipment: the choice of concrete tanker transported to the pouring site, and then transported by the concrete pump transport to the pouring point. This site is equipped with two HBT60 concrete delivery pumps, six 8m3 concrete tankers as the primary transport of concrete equipment to ensure the delivery of concrete.

5, Generator: This station is equipped with a 200kw diesel generator set, as the standby power reserve station to ensure uninterrupted production of mixing station.

Article Title:Composition of main unit of concrete mixing plant

How to choose a concrete mixing plant

The choice of Concrete Batching Plant is a cluttered process. It is related to the scale, nature, requirements, terrain, capital, equipment and construction period.

 1、According to the user contract in the contract task to determine the size of the required models. In the fully meet the engineering tasks together, as far as possible to make room for equipment production capacity, have to consider a certain period of time the peak of the amount of concrete. For example: to end with an annual output of 100,000 m3 of concrete, equipment production capacity should be greater than 50 m3 / h of concrete mixing plant.

 2、According to the matching of construction equipment to select models. Such as cement road paver construction of the selected equipment is to meet the relevant national road construction specifications of the cement concrete construction quality and grading requirements, but also with the cement concrete paver productivity together.

3、Consider the frequency of removal of the selected equipment. That is, on the relocation of repeated construction units such as road construction should choose mobile or integrated mixing equipment; and on the commercial concrete station, it should be a fixed structure is appropriate.

4、Consideration should be given to the performance and price of the equipment.

5、Should be fully considered in the technical aspects of the advanced nature of the equipment.

6、Consider whether the supply of equipment accessories and timely parts of the price is reasonable.

7、Should insist on multi-program selection, analysis and comparison, weigh the pros and cons, select the best technical and economic indicators program.

Users in the choice of Concrete Batching Plant must be considered when all aspects of the elements in order to obtain the best return on investment.

Concrete mixing plant operating rules

1、Concrete Batching Plant Before use to view: power first press the switch, and then knife gate, view the operation is not active. Shaking, roller work, dialing stick work is not normal. Wire rope wound on the reel status; out of the reactor, such as lifting is not normal. Such as the discovery of defects, told the Electrical and Mechanical Services team. Deal with it before use.

2、A feeding not too much, according to the ratio of feeding, pay attention to water-cement ratio. Stirring evenly, a stirring moment shall not be less than a minute, the normal mix of concrete, should be very thick porridge-like.

3、Fixed hand boot, the driver should understand the operating principle of the operating system and found that defects immediately downtime view.

4、Electrical parts should be protected, cable to protect, to avoid damage.

5、Mixer should be pad level, mixer hopper may not stand under the person to prevent the funnel falling water when wounding.

6、Temporarily stop the rail, should be regularly (every 20 minutes), start the mixer, to avoid condensation or pouring concrete within the drum, the water wash the drum.

7、Concrete irrigation after the shutdown, the drum and the machine should be promptly washed out of the mortar outside the clean up clean. The feed hopper under the class cleaning time, so that when the material into the decentralization of party rules, and coated with a layer of oil in the appearance, until the next use.

8、Carefully implement the shift criteria, the work machine work, pay attention to matters such as account to understand.

Safety production rules for concrete mixing plant

First: In the concrete production industry, the installation of Concrete mixing plant is very important, should be carried out by professionals in accordance with the provisions of the factory manual, by the technical staff under the auspices of the organization but also debugging, technical performance in all the provisions and Acceptance of qualified, the concrete mixing station can be put into use.
Second: In the safe operation of mixing with the mixing station air compressors, belt conveyors and concrete mixers and other equipment, should follow the relevant provisions of the operation.
Third: in the production before the need to check the project should meet the following requirements:
(1) The first is to check the mixing tube and the supporting body of the transmission, moving parts and warehouse doors, Doumen, track, etc. no foreign body stuck;
(2) Next is to check the oil level of the oil tank in line with regulations;
(3) is to check the valve to open the exhaust gas system in the water separator too much water, open the reservoir discharge plug discharge oil and water mixture;
(4) also check the hoisting bucket or dragline installation of wire rope, reel winding are correct, wire rope and pulley in line with regulations to enhance the hopper and drag shovel brake Ling Ming effective;
(5) need to check the ministries of the bolts have been tightened, the inlet and discharge valve without excessive wear and tear, the tension of the conveyor belt appropriate, not deviation;
(6) Check all the control devices and display part of the work is normal, its accuracy in line with regulations;
(7) Finally check the electrical device can effectively control the mechanical action, the contact point and the dynamic and static contact without significant damage.
Fourth: the proportion of raw materials in the selection of concrete production should be prepared according to the technical performance of the mixing station qualified sand, stone aggregate, particle size beyond the permitted range shall not be used.
Fifth: the various parts of the unit should be gradually activated. After starting, the operation of each component and the instructions of the instrument should be normal, oil, gas, water pressure should meet the requirements before they can begin operations.
Sixth: regardless of any personnel, as long as it is in the course of operations, in the storage area and the hopper under the bucket, is strictly prohibited personnel access.
Seventh: Before the production, the mixing tank should be covered before starting the cover. Mechanical operation, is strictly prohibited hand, foot into the hopper or mixing tube probing.
Eighth: When the aggregate station was stuck in the aggregate when the warehouse should be promptly clean up the blockage.
Ninth: the production mixer can not be full of stirring down, such as sudden power outages in a timely manner to open the discharge. When a fault or power failure, should immediately cut off the power, lock the switch box, mixing the concrete within the cylinder clean, and then troubleshooting or waiting for power to restore.（www.zzxfjxwm.com）
10: In the production and use of the mixing station machinery shall not be overloaded; should check the motor running, when abnormal sound or temperature rise is too high, should immediately stop inspection; voltage is too low can not be forced to run.
Eleventh: After the end of the production mixer shut down, you should first uninstall, and then turn off the various parts of the switch and pipeline. Should be within the spiral pipe all the cement out of the tube can not be left any material.
Twelfth: After operation, should clean up the mixing tube, the material door and the hopper, and rinse with water, while washing additives and its supply system. Weighing system knife seat, knife-edge should be cleaned, and should ensure that the weighing accuracy.
Thirteenth: the freezing season, should be exhausted pumps, additives, pumps, tanks and additives tank of water, and should start the pumps and additives pump operation.
14: When the mixing station is transferred or deactivated, the tank, additive tank, cement, sand, stone storage hopper and weighing hopper should be drained and cleaned. In the transfer of equipment, the bar should be balanced head balance bar scale bar fixed, the sensor should be unloaded.

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Electric Control System of Concrete Mixing Plant

In order to better realize the modern construction, to meet the project schedule and quality requirements, concrete mixing station with a sound electronic control system has become inevitable. This paper introduces the composition and characteristics of electric control system in the mixing station.
I. Electronic control system components
Common to the concrete mixing station electrical control system from the host computer, monitors, printers, communication cables, weighing instruments and other components.
1. Host computer part
The upper part of the electronic control system, including IPC and color display, to achieve man-machine dialogue, enter the production parameters; at the start of the information sent to the next crew; from the next machine to read information to monitor; fault alarm; control printer print data; data.
2. Lower part of the machine
The lower part of the electric control system includes a set of PLC to realize the real-time automatic control of the concrete mixing station and receive the information of the host computer. The input relay (including the limit switch and weighing sensor analog signal) is outputted and controlled by the logic judgment.
Second, the characteristics of electronic control system(www.zzxfjxwm.com)
1. Operation and management in one, simple and convenient.
2. The batching system adopts the computer centralized control.
3. Concrete mixing station operating data can be stored more than 10 years, easy to set management.
4. Formulation can be used in digital, user-friendly identification, the number of recipes up to dozens.
5. With error analysis and automatic detection function.
6. In the case of automatic control, the manual operating system can still control the mixing station, such as ingredients, mixing, discharge and so on.

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Cause and Treatment of Motor Overheating in Mixer

Concrete mixer in the summer operation of some time after the machine part of the winch motor overheating, especially high-power forced mixer, how to find mandatory concrete mixer winch motor overheating and give reasons for exclusion.

     First, the mandatory concrete mixer models are those

     Forced concrete mixer mainly JS500 mandatory concrete mixer, JS750 forced mixer, JS1000 concrete mixer, JS1500 mandatory mixer, JS2000 mandatory concrete mixer, JS3000 concrete mixer and other models. The mixer power, long working hours, continuous work, we need to always pay attention to control systems, but there are overheating reaction, the system will be a warning, then we need to stop checking.

     Second, the compulsory concrete mixer Winder motor overheating reasons for what?

     (1) track installation is not parallel;（www.zzxfjxwm.com）

     (2) motor brake separation gap is too small;

     (3) the voltage is low;

     The above is the mixer motor overheating causes and treatment methods

  Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, Concrete mixing plant, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

How to manage the concrete mixing plant

Orderly operation of concrete mixing plant must have quality assurance, safety, environmental protection, equipment management and other rules and regulations. And the rules and regulations must be sound, the quality of the emergence of the problem must be implemented to the people responsible for the relevant penalties to have clear regulations.

  Concrete mixing station to establish the entry of raw materials account, check the account and so on. There should be production mixing records, including pouring unit engineering specific parts of the serial number, concrete grade, production time, production is normal, in the event of problems can be traced back. Concrete outbound to have a transport order, single-marked number, station time, the concrete label, the use of parts, such as slump.

  Concrete mixing station management personnel should develop a sound contingency plans to ensure that the supply of concrete is not due to unexpected events and interruption. According to the calculation of winter and summer heat, to develop the appropriate temperature control measures to ensure that the concrete machine, into the mold temperature within the scope of the standard.

  In addition, the concrete mixing station must be clearly marked signs and material identification, identification card content to be detailed, fill in the specification.（www.zzxfjxwm.com）

Pay Attention to the Problem of Concrete Mixing Station in Working

Concrete mixing station system is complex, each component system has its own need to achieve the function of the aggregate aggregate, cement powder, water, external additives in accordance with a certain proportion of ratio, the final realization of finished concrete production. Can be said that all aspects can not go wrong, and today we will talk about mixing plant operating ingredients should pay attention to the problem encountered such a similar problem should pay more attention to timely prevention.

      At present, concrete mixing stations are generally used in automatic control system, set in advance a variety of materials hungry mix ratio, automatic measurement, the error is small. But also, after all, only the machine can not blindly rely on, but also the need for timely observation and comparison of the operator. In the concrete mixing plant production, we should pay attention to observe the measurement error, the overshoot adjustment, as well as the residual feeding process to grasp, to ensure the accuracy of metrological requirements.

    When the concrete mixing station production of concrete mixed with admixture, the stirring time should be appropriately extended. Dry mixing, the fly ash concrete mixing time than ordinary concrete extension of 10-30 seconds, the other admixture of concrete extension of 30-60 seconds.

    In addition, the concrete mixing plant operators on the mixing station control function of the various components of the concept must be clear, the correct order of operation and operating procedures to be proficient. The only way to deal with emergencies in the correct time to avoid operational errors resulting in equipment damage and material losses.

Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, Concrete mixing plant, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!
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Repair And Troubleshooting of Concrete Mixing Plant

 Concrete mixing plant failure problems can be checked in accordance with the components step by step, can also be classified according to the nature of the fault, according to the nature of the failure we make analysis and propose solutions for reference.
 
1, the occurrence of high frequency fault
 
  Frequent high frequency, need to check the work of the regular inspection of such failures generally do not cause serious consequences can be adjusted at work at any time to solve. Such as conveyor belt deviation adjustment method should be analyzed and resolved from the principle, focusing on understanding the principle of three running three does not run (do not run before the run, do not run loose run, run high does not run low).
 
2, the occurrence of high frequency fault
 
  The occurrence frequency is lower than the previous species, but the maintenance of complex, usually caused by system failure or damage to parts, such as conveyor roller does not turn, the mixer spindle and the discharge port slurry leakage; such failures should be blender spindle seal Principle.
3, sudden failure
 
The frequency is very low, but improper handling or processing is not timely result in the consequences of National Chiao Tung University, can not be ignored, what will focus on description.
 
3.1 Aggregate silo doors can not be closed（www.zzxfjxwm.com）
 
Symptom: Aggregate said weighing value exceeds the value of a lot of formula, and the screen shows the silo has been cutting, even weighing the door open a long time there is still weighing value.
 
  Cause: (1) cylinder failure or damage; (2) control electromagnetic valve failure or damage; (3) a large aggregate or impurities will be stuck door; (4) control system failure.
 Solution: found the fault immediately shut down, manual operation will be stirring the concrete mixing after the release. Find the fault location and the cause, according to the cause of the fault or replace the damaged components, troubleshooting and then clean up the belt and overflow of aggregate.
 
3.2 aggregate measurement Doumen can not be closed
 
   Reason: (1) cylinder failure or damage (2) control solenoid valve failure or damage; (3) control system failure
 
Symptom: Aggregate scale began to measure after the screen shows a very low value, and in this value does not increase shaking, aggregate display in the next material.
 
Approach: with the aggregate warehouse door can not be closed the same.
 
3.3 Mixer failure
 
Causes and symptoms: (1) mixing blade fracture, spindle bearing damage and other parts of the spindle accidental damage, will be accompanied by the production of large abnormal sound, the host current will exceed the normal value.
(2) control component damage or control system failure, usually manifested as normal operation. (3) The discharge door can not be opened
 
Disposal: find the fault immediately shut down, manual operation mixer hydraulic door handle, the mixer all the materials drained, clean up the belt and the overflow of the aggregate, to find the fault location and the reasons for troubleshooting or replacement of damaged components.
  Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, Concrete mixing plant, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Fault Diagnosis of Concrete Mixing Plant

01 observation method of inquiry
 
In the maintenance of equipment before, according to the service life of the equipment and related models for preliminary analysis, asked the user to do the repair and inspection, and then make in-depth understanding and careful observation of the phenomenon of failure, and then make judgments, pay attention to Easy to wear wearing parts, the use of reliability.(www.zzxfjxwm.com)
 
02 Auditory method
 
When the device is running, will issue a regular and noisy sound, if the device fails, it will produce abnormal sound. In the maintenance, equipment can be run in different conditions, and then auscultation of equipment failure, for example, for crankshaft and linkage, you can use a long rod auscultation auscultation abnormal; the role of the gap at the card slot role and reaction force , There is irregular noise.
 
03 Touch method
 
Maintenance personnel can use the feel to the equipment failure to feel. Such as: the motor overheating; hand touch the pump outlet hose, you can feel the pressure of the water flow passive, so that the pump can work; check the actual tightness of the belt, the friction surface of the specific wear and tear; Sex is not very good axis components, running there will be obvious vibration, or tremor and other phenomena, to prove whether the normal work of machinery and equipment.
 
04 olfactory method
 
If the concrete mixing Plant machinery and equipment work overload, there will be odor, so for the work can be carried out by virtue of smell. For example, a mechanical overload may occur on the operating equipment. If the temperature rises, odor may be generated. If the non-metallic material emits a scorched odor, the wire may be damaged.
 
05 replacement method
 
 
The so-called replacement method is to use a qualified assembly or parts, will appear to replace damaged parts, wear parts and easy to wear parts for periodic inspection and replacement. For some vulnerable, but not maintenance.
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Concrete Mixer Installation Method

1, the mixer should be set in a flat position, with square wooden pad from the front and rear axles, the tire placed overhead, so as not to move when moving.
2, the mixer should be implemented two leakage protection, power supply connected to work before, you must carefully check the empty car try to pass that can be used. Test run should check the speed of mixing tube is appropriate, under normal circumstances, the empty car speed proportion of vehicles (after loading) slightly faster 2 to 3 turn, such as more difference should be adjusted wheel and transmission wheel ratio.
3, the rotation direction of the mixing tube should be consistent with the direction of the arrow, if not true, should correct the motor wiring.
4, check the transmission clutch and brake is flexible and reliable, whether the damage to steel wire rope, track pulley is good, around the barrier-free and lubrication of various parts of the situation.
5, boot, always pay attention to the operation of various parts of the mixer is normal. Shutdown, often check whether the mixer blade bending, whether the screw hit or loose.
6, when the concrete mixing is completed or is expected to stop 1h or more, in addition to the remaining material out of the net, the application of stones and water into the shaker, the boot rotation, the stick on the barrel of the mortar rinse off all discharged. There shall be no water in the cylinder to prevent the barrel and the blade from rusting. At the same time should also be cleaned outside the mixing tube fouling, so that machinery to keep clean and intact.
7, after get off work and shut down when not in use, should be cut off power, and lock the switch box to ensure safety
 
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Concrete mixing station in the winter construction need attention

Winter cold weather is the concrete engineering quality accident-prone season, due to low temperature in winter, the temperature difference between day and night, concrete often appears retardation or swelling phenomenon, affecting the normal operation of the project. Because the cement itself is easy to solidify the characteristics of concrete mixing plant is ready to use at any time cleaning, if you want to complete the scheduled production unit per unit time, the cleaning equipment must be very standardized, otherwise not only affect the production, and equipment Itself may also cause some damage, especially in low temperature conditions, many parts of the equipment are prone to freezing, cleaning becomes more difficult. In order to achieve the desired production effect, to avoid the above phenomenon.

1, the equipment temperature control

        Many mixing stations to save costs, equipment and facilities is relatively simple, after entering the winter construction, equipment can not run, not only a lot of waste of manpower, material and financial resources, but also delay time, supply does not affect the company's reputation.In order to ensure the normal operation of the equipment, the normal production of concrete, the silo, the admixture tank and the mixer should be closed and the heating point (stove and electric heating) should be set up Heating.Conditional should adopt the boiler heating, heating pipes should be run through the aggregate warehouse under the material mouth, admixture shed, pool, mixer shed and operating room, not only save time and effort, but also to better ensure that the machine out of the concrete temperature and workperformance.Do a good job of heating the host station heating work, check the heating insulation line, promptly remove the fault and hidden dangers, to ensure the normal operation of the winter in the host system.

2, the material temperature control

        Storage, distribution, antifreeze preparation work of winter materials in the application of various raw materials and equipment of winter facilities, and require procurement work in place in time; responsible for doing insulation work of additive storage.Cement should be preferred Portland cement, ordinary portland cement and early strength cement to improve the early strength of concrete and reduce the frequency of occurrence of frost damage.Sand, stone should give priority to the use of inventory sand, such as the winter into the new sand, sand should be strictly required to enter the water content.Mixing water that is drinking water, winter construction should be hot water mixing, water temperature control at 60 ℃, but not higher tha 80 ℃. 2, the material temperature control

        Storage, distribution, antifreeze preparation work of winter materials in the application of various raw materials and equipment of winter facilities, and require procurement work in place in time; responsible for doing insulation work of additive storage.Cement should be preferred Portland cement, ordinary portland cement and early strength cement to improve the early strength of concrete and reduce the frequency of occurrence of frost damage.Sand, stone should give priority to the use of inventory sand, such as the winter into the new sand, sand should be strictly required to enter the water content.Mixing water that is drinking water, winter construction should be hot water mixing, water temperature control at 60 ℃, but not higher tha 80 ℃.

3, other considerations（www.zzxfjxwm.com）

        Laboratory do a good job in the selection of winter admixture, retest and supporting the experimental work, do a good job during winter high-grade concrete technical reserves; antifreeze selection must be able to meet the sudden cooling and may be the lowest temperature conditions.Strengthen the management during the winter brush brush Taiwan, Taiwan should take measures to keep the car, the pool of the pool in the production process to ensure that the technology department to ensure that the water temperature requirements, and timely cleaning brush car separated after the gravel, To prevent frost.

        Concrete mixing plant in winter construction, in the relevant operation must be based on safety, by the professional staff related operations.In order to avoid the concrete construction in the winter to leave hidden dangers, to ensure project quality.

 Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, Concrete mixing plant, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Precautions for Start - up of Concrete Mixer

A description of the start mode

Start the concrete mixer using star delta conversion start mode, that is, star start, triangular run. As the mixer main motor power, start at the beginning, the stator coil for the star connection, this can reduce the starting current. To be started after a period of time, the motor speed is approaching the normal speed, then the starter stator coil will be changed to triangular connection, start indicator light, the motor to normal operation.

Second, the note

1. Do not start with load

Start with the load refers to the concrete mixer within the case of material to start. Because the start-up current with a load is very large in a period of time, easy to burn the air switch, contactor, reducing motor life, the mixer material in the case of the correct approach is:

① start the air compressor, the host door open, so that part of the material leak down;

② If the material is not a lot of concrete mixer, you can jog the host, so that the material released until the machine is finished or little complete re-start the material;

③ If the concrete mixer a lot of material, you need to manually clean up part of the above methods described above.

2. Emergency stop is prohibited

Stirring the mixer in the case of material is prohibited to stop the host, because the host to prohibit start with a load. Unless in a particularly urgent situation can stop the heavy truck is working in the mixer.

3. Use the "Emergency Stop" button with caution

The EMERGENCY STOP button is a red mushroom-shaped button located at the top left of the operator panel. When an emergency, no time to deal with the dangerous situation, you can manually shoot the emergency stop button, this button will stop except for bells and all the motor and the implementation of devices, including the mixer. When the danger is removed, the "Emergency Stop" button can be rotated to release it.

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Daily management of storage silo in concrete mixing plant

Concrete mixing station storage silo is placed raw materials, the daily management of the standard or not related to the storage of raw materials of good quality and bad, so the mixing station staff to do the daily management of storage hopper.

1. Stones in the silo of the mixing station should be piled up in different areas to prevent the mixing ratio of materials is not allowed; different specifications of sand and gravel should be stacked warehouse, and logo, indicating the name of the raw materials, varieties, specifications, Purchase date. Warehouse management personnel to the aggregate number of silt silos, draw the entire yard area distribution map, respectively, notify the laboratory, the main control room, forklift feeding personnel, and with the above personnel to determine the ingredients on the warehouse, said the number, and the Material storage.

2. Equipped with loading trucks and the gravel were stacked neatly; site to be hardened to facilitate the loading of trucks and prevent dirt and other debris into the material.

3. To strengthen the cement, fly ash, ultra-fine powder and other powder materials management. Each silo shall be marked with the name, origin, variety and specification of the raw materials stored in it. At each silo's entrance, there shall be a mark identical with the silo, indicating the variety, specification, place of origin, Quantity, etc .; each silo imports should be locked by the person responsible for the feed management, powder material storage must be received by the staff, the supply side personnel to check, to confirm the signature to open the silo to prevent the feed The process of error, resulting in quality accidents.

4. Concrete mixing station storage silo admixture management. Bulk powder admixture according to the cement and other powder materials management methods; powder bagging additives in the warehouse to be placed neatly with signs that its name, variety, size, origin, purchase date; liquid admixture according to different Manufacturers, different species were stored, clearly identified.

Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, concrete mixing station, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Concrete mixing plant how to manage

 Orderly operation of concrete mixing plant must have quality assurance, safety, environmental protection, equipment management and other rules and regulations. And the rules and regulations must be sound, the quality of the emergence of the problem must be implemented to the people responsible for the relevant persons to have a clear penalty regulations.
 
    Concrete mixing station to establish the entry of raw materials account, check the account and so on. There should be production mixing records, including pouring unit engineering specific parts of the serial number, concrete label, production time, production is normal, can be traced back in the event of problems. Concrete outbound to have a transport order, single-marked number, station time, the concrete label, the use of parts, such as slump.
 
    Concrete mixing station management personnel should develop a sound mixing station equipment contingency plans to ensure that the supply of concrete is not due to unexpected events and interruption. According to the calculation of winter and summer heat, to develop the appropriate temperature control measures to ensure that the concrete machine, into the mold temperature within the scope of the standard.
 
    In addition, the concrete mixing station must be clearly marked signs and material identification, identification card content to be detailed, fill in the specification.
Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, concrete mixing station, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Check the work of concrete mixer before use

1, check the gear box and lubrication part of the lubrication (grease) is sufficient.

2, check the power supply voltage, rated voltage 380V, pressure drop not less than 10%, but not more than 5%, otherwise it will affect the normal operation of the machine.

3, check the electrical and electrical components of the wiring is solid, and wire the motor ground to ensure safety, and then turn on the power.

4, connected to water, check the water pump, throttle valve and water pipe reliability.

5, Check the various parts of the link bolts are solid, especially the moving parts of the connection, if loose should be tightened.

6, check the wire rope is neatly arranged in the reel, if loose should be re-wrapped.

7, check the mixing tube, the hopper and track rack whether the foreign body accumulation, if the deposit should be promptly cleaned.

8, check whether the lifting hopper flexible, brake, trip switch action is sensitive, accurate and safe and reliable.

Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, concrete mixing station, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Detailed construction of concrete mixing station

1. Clear the table

After selecting the site, with the excavator to remove surface debris and sludge, and transported to the designated site stacking.

2. Site excavation

Before the excavation of the site, the slope top cut ditch is made, and the seepage prevention work is made according to the soil condition. Site excavation must be top-down excavation, shall not dig, over-excavation and under-excavation, excavation to the top of the site should pay attention to reserve the settlement height, when encountered stone, the use of broken hammer construction. Excavation to the design elevation, the rolling compaction formation, less than the required capacity of the use of stone-for-fill.

3. Site hardening

First grade: 1m stone + 0.3m water stable layer + 0.2mC25 concrete;

Second, three: 0.3m water stability layer +0.2 mC25 concrete.

4. Mixing station, silo base

The size of the pile cap is 5 × 5 × 1m. Four piles with diameters of 1.2m are installed under each pile cap. The pile is embedded in the weathered rock layer not less than 4m. The pile is made of C30 concrete. .

5. silos

It is divided into 6 silos, two silos, four stone silos, and the partition wall of the distribution silo with "37" wall masonry height of not less than 1.8m, and with cement mortar To avoid stagnant water, a variety of silos area clear, set the material signage, size 40 * 750px, indicating the name of the material, origin, location, Specifications, units of measurement, quality and so on. Install water pipes on the side of the silo to rinse the aggregate before it becomes contaminated.

6.Fences

According to the actual situation of the site, surrounded by brick walls closed, with 24 walls, high 2m, every 6m spacing masonry a brick column, the top of the brick pillar with a cap. In the import and export set up guard room, and safety and quality of the slogan, and plug in the banners. Construction of the venue signs.

7.Drainage

Mixing station site in the formation site and hardened site, the overall control to set drainage on both sides, set -3% of the longitudinal slope, surrounded by 40 × 40 drainage ditch set to ensure that drainage within the smooth; six silos in the hardened field When doing a single 5% of the drainage slope, so that the silo of the water straight through the site longitudinal discharge into the drainage ditch; mixing station host drainage sedimentation tank must be set to clean the mixer after the waste water discharged into the drainage ditch. 60 × 40 drainage ditch is set outside the site.

Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, concrete mixing station, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Metering System of Concrete Mixing Plant

In the concrete mixing station, if the concrete mixer is the "heart" of the mixing station, then the metering system is the "soul" of the concrete mixing plant. Because the metering system directly affects the performance and quality of concrete.

Concrete mixing station metering system is generally reflected in the water, cement, external additives and aggregate on the measurement. The accuracy and stability of the metering system determines the quality of concrete production. Static accuracy can not meet the requirements, the key lies in the accuracy of dynamic measurement of the gap and the computer to capture the data.

In the concrete mixing plant production process, in strict accordance with the ratio of production, there is no written test laboratory personnel instructions, any person is not allowed to increase or decrease raw materials, admixtures and water consumption. Mixing time as the concrete state, without the consent of the test personnel shall not increase or decrease. Production, should closely observe the measurement is accurate, more than the required error should be adjusted in time gap. All dosing should be in the minimum range at no load. Metering system, other anomalies must be promptly reported to deal with.

In addition, the cement, additives, water error can not exceed ± 1%, found that cement, admixture quality is not enough, it should be timely to find the screw conveyor is blocked, and promptly excluded, aggregate error can not exceed ± 2%, when the error exceeds Should be promptly find out the reasons and manual compensation and records.

Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, concrete mixing station, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Reasonable Selection of Concrete Mixing Plant

1. Overall selection principle
   
   (1) production scale
   
       According to the size of the production scale to determine the capacity of concrete mixing plant. The annual output of 200,000 m3, the annual output of 200,000 m3 the following, concrete mixing equipment productivity is generally not less than 90m3 / h; annual output of 200,000 to 300,000 m3, concrete mixing equipment productivity is generally 120m3 / h; annual output of 300,000 m3 or more, concrete mixing equipment productivity Is 150m3 / h or 200m3 / h.
   
   (2) construction site
   
       According to the size of the construction site, you can choose concrete mixing plant or concrete mixing plant. The production capacity of the mixer is higher than that of the mixing plant. The overall shape is neat and beautiful. The material yard covers an area of ​​small. The production environment is good, but the manufacturing and installation cycle is long and the one-time investment is high. Selection of concrete mixing station, aggregate to be upgraded twice, flexible layout, manufacturing, installation cycle is short, one-time investment costs are low, but the yard covers an area of ​​large, poor production environment.
   
   (3) the equipment
   
       According to the conditions of equipment to select the concrete mixer specifications and working size. Mixing truck loading capacity should be matched with the material out of the mixer capacity, improper matching will affect the work efficiency. Loader loading capacity should be with the concrete mixing station to match the feeding station height.
   
   (4) management functions
   
       If the use of intensive network management, concrete mixing equipment should be considered the network management functions, to avoid future upgrades difficult.
   
   (5) equipment technical performance
   
       Mainly from the advanced equipment, reliability, excellent and versatile several considerations. Equipment should have a working principle of advanced, high degree of automation, management, powerful and environmentally friendly performance characteristics. Equipment should be configured excellent, reliable control, applicability, and maintainability. In addition, we must consider the high precision, good mixing quality, high production efficiency, low energy consumption, the use of standard parts, good interchangeability.
   
   (6) supplier reputation
   
       Including whether the installation is rigorous; technical guidance and training is in place; after-sales service is timely; spare parts supply is sufficient.
   
   (7) performance and low cost
   
       It is not advisable to pursue the technical performance of the equipment comprehensively, it will increase the unnecessary investment, but it is not advisable to pursue the low investment to reduce the technical performance of the equipment and bring the increase of the cost. The current domestic market, the overall performance of imported equipment is higher, but the price is more expensive. Domestic equipment in several well-known brands, although the overall performance can not be compared with imported equipment, but the key parts of the configuration is also commonly used imported components, the main performance is not much worse than the imported equipment, the price is much lower. More reasonable approach is to choose the appropriate cost performance.
   
   2. Selection of key components
   
   (1) Mixers for commercial concrete mixing plants
   
       Forced Mixer Good mixing quality, overload capacity, discharge without segregation, high production efficiency, can adapt to a variety of properties of concrete mixing, the current commercial concrete mixing equipment commonly used forced mixer. But its structure is more complex, the use of higher cost. Forced mixer is divided into two horizontal axes, single horizontal shaft, single vertical shaft and planetary form. The double horizontal shaft mixer has the advantages of good stirring performance, high production efficiency, good adaptability, outstanding structural features, good reliability, Commercial concrete production; single horizontal shaft mixer and single vertical shaft mixer because of its structural characteristics and adaptability in the commercial concrete mixing equipment has been less and less: the current application of planetary mixer is not common, more common in imported equipment.
   
   (2) commercial concrete mixing equipment, electronic control system
   
       At present, the domestic concrete mixing station electronic control system in a variety of forms, mainly in the following three control methods based.
   
       A, distributed type microcomputer control: This kind of control form in the early mixing station design widely applies. The core of the control system for the programmable controller, a computer only as a management report printing, the computer's function and role is not very obvious. With the wide application of commercial concrete, the concrete mixing station functional requirements more and more complex, this form of control applications is very difficult.
   
       B, centralized computer control: This form of control computer control and management functions in a single computer, the task is relatively heavy, and the production process of statistical information on the report can not be synchronized, can not always statistical data, measurement by human factors Too much interference. Such as: the preparation of measurement and control procedures, signal amplifiers and A / D board accuracy, will affect the measurement accuracy.
   
       C, centralized dual microcomputer control: This form is to solve the measurement of human factors interference. The use of a dedicated control of the ingredients of the instrument, and the production control and management functions in the two sub-computer, do not interfere with, production control and reporting statistics simultaneously, and management computer can also be used as a production backup machine, with a higher level The computer's network interface.
   
   3. Selection of other devices
   
   (1) Aggregate batching system
   
       As the silo feeding by the auxiliary equipment and the impact of the venue, the bunker volume should be larger.
   
       For the mixing station capacity of a single silo is generally greater than 20m3, if the use of belt conveyor or concrete warehouse can also be larger in order to reduce the stock yard covers an area. For a single hopper building volume is generally greater than 50m3. Concrete mixing station is generally composed of ingredients, its structure in two forms, all-steel structure ingredients on the ground ingredients, easy maintenance, easy drainage, but the feeding difficulties, the use of loader or belt machine feeding; Of the silo for the concrete structure, to warehouse ingredients, feeding convenience, easy to heat, but the maintenance difficulties, can be used loaders, bulldozers or dump truck directly on the material.
   
   (2) aggregate lifting system
   
       The belt conveyor and the hopper are generally used. The belt conveyor has high production efficiency, reliable performance, easy to be closed, not easily affected by climate, and low maintenance cost, but occupies a large area. Hoisting hopper is generally only used for mixing stations, compact structure, small footprint, but high maintenance costs, poor reliability, is currently in the large concrete mixing plant has been rarely used. There are also pattern belt and groove belt conveyor, the lifting angle can be greatly improved, the vertical belt groove can be improved, but because of its reliability and back to the material problem is not resolved, generally do not use.
   
   (3) Mix the main building
   
       Generally closed, equipped with centralized dust removal device, the cold region should also consider the requirements of winter construction cold, so insulation jacket. Open mixing station and simple mixing station, due to poor environmental performance, the current new commercial concrete mixing equipment has been rarely seen in some areas has been banned.
   
   (4) metering system
   
       At present using the weight measurement, divided into cumulative measurement and independent measurement of two forms. Accumulation measurement structure is simple, easy to maintain, feeding height is low, but can not control the measurement accuracy alone. Independent measurement of individual control measurement accuracy, structure is more complex, feeding a high degree of increase, the cost has increased.
   
   (5) powder storage and transportation devices
   
       Powder storage tank number and size should be configured according to need, generally determined by the type and supply of materials, powder cans should be equipped with material level controller. Generally, there are two kinds of powder conveying devices: pneumatic conveying structure is simple, feeding uniform, but long-distance transportation, air pressure is not easy to control; screw conveying conveying distance is long, easy to overall arrangement, reliable, the vast majority of mixing stations or stirring Building are using screw conveyor.
   
   (6) matching pieces
   
       Selection of components often determines the reliability of concrete mixing equipment. General accessories should be selected high reliability of the well-known brands, especially the main parts. For domestic equipment, electronic components, sensors, cement disc valve, and even the reducer mixer, lubricating components imported components, more reliable.

Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, concrete mixing station, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Four Principles of Emergency Rescue for Concrete Mixing Plant

1, the unified command system linkage principle

The handling of sudden crisis, the company's emergency command center (or authorized departments) unified command of the relevant departments and teams within the company, unified coordination of the relevant external units or related personnel, make full use of existing resources, the existing Command agencies, personnel, equipment, materials, information, work methods to ensure the effective control of emergencies and rapid disposal.

2, the principle of persistent and unremitting system linkage

  The handling of sudden crisis, the company's emergency command center (or authorized departments) unified command of the relevant departments and teams within the company, unified coordination of the relevant external units or related personnel, make full use of existing resources, the existing Command agencies, personnel, equipment, materials, information, work methods to ensure the effective control of emergencies and rapid disposal.

3, rapid response to coordinate the principles of settlement

 Departments and teams should establish corresponding departments and teams of early warning and emergency response plans and mechanisms to deal with emergencies to ensure that the material and manpower to prepare in case of crisis, to ensure that the discovery, reporting, command, disposal and other aspects of the close Convergence, timely response.

4, after the sudden crisis on-site temporary disposal of the principle

 In order to ensure effective control of the spread of emergencies on site, the highest (or the most direct) leadership on the jobsite can take immediate action to avoid or reduce losses without the company's Emergency Leadership Group directive.

Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, concrete mixing station, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!

Common Faults in Concrete Mixing Plant

1, cement scales are not allowed to weigh

The failure of the performance of the scale after the calibration can show the correct value, the figures are not zero after unloading, clear and then load the weight of digital changes, but check the sensor resistance in the normal range, and the instrument no problem.

Analysis of the reasons may be: transport with a fixed scale frame angle iron is not removed; pressure head and pressure plate at the card; scale body and the outside world interfere with each other; 3 sensor models do not match;

If the pressure head or pressure plate issuance, should be promptly dealt with, so smooth and no resistance; if the scale body and the outside world interfere with the operation of the concrete mixing station, if the scale is not removed, , Should be promptly isolated; if the three sensor models do not match, the sensor should be replaced by the same model; if the material partial load, should be adjusted.

2, when the hopper does not have the material hopper gate to open and close the difficulty

The failure of the slow performance of the cylinder action, but check the mechanical part of the unloading door without friction, stuck phenomenon, and the solenoid valve, the cylinder is no leakage phenomenon.

Analysis of the reasons may be: poor air, such as gas at the Sanlian the gas-water separator filter too dirty, resulting in poor airway, so that gas flow per unit of time reduced, resulting in slow cylinder activity; muffler dirty, Cylinder action rod chamber and rodless cavity pressure difference becomes smaller, resulting in slow cylinder action.

Handling concrete mixing station failure method is: If the gas path is not smooth, it is timely to clean or replace the filter; if the muffler too dirty, it is timely cleaning muffler.

3, the discharge port is not expected

The failure in the contactor pull, the motor clockwise rotation, the mother screw conveyor discharge port is not expected, a little longer time the air switch will trip; the air switch will start after closing the motor tripping, observation powder No solidification phenomenon.

Analysis of possible reasons: the mother machine for the reverse; air switch damage; mother motor wiring may have a poor contact.

If the air switch is damaged, it should be replaced; if the mother machine motor wiring has a bad contact, should be checked and dealt with. If the machine is not connected to the motor, the motor should be connected to the motor.

4, stirring shaft "boring car"

The performance of the failure of the mixing host in the mixing mortar, the mixing shaft rotation difficult, or even stop.

The mixing blade or the side of the blade and the inner wall of the tank larger gap, a foreign body into the intervening between the card; voltage is too low; mixing parameters of the mixing of the two parts of the material; Setting error.

Handling concrete mixing station failure method is: If the serious overload, material hoop axis, should adjust the stirring capacity, timely cleaning of the solidified mortar; if the human error caused by the second feeding, the excess material should be removed according to the process operation; The blade and the liner should be adjusted so that the gap is not greater than 5mm, and promptly clean up the foreign body; if the voltage is too low, to the operator to re-scale; if the mixing blades or side vane and the tank wall between the foreign body stuck, Re-check the line voltage; if the parameter is set incorrectly, should be carefully checked the appropriate batching data and timely amendments.

5, the host discharge gate can not be opened

The failure of the performance of the mixing station when the automatic work, the host discharge gate does not open, stirring when the discharge indicator does not shine.

Analysis of the reasons may be: discharge doors and sealing plate between the foreign body or the accumulation of material; gas system pressure is insufficient, the cylinder leakage or damage to the oil mist; solenoid valve and the wiring between the relay off, virtual or relay damage; Solenoid valve coil burning or stuck card; time relay damage, resulting in no normal PLC input signal.

Handling concrete mixing station failure method is: If the discharge door and seal plate between the foreign body or accumulate material, should clean up the foreign body, the accumulation of materials and flushing discharge gate; if the gas system pressure, the cylinder leakage or damage to the oil mist , Should check the oil mist, fittings, cylinder and other parts are damaged; if the solenoid valve and the relay wiring between the loss, virtual connection or relay damage should check the relay contact output and wiring, if necessary, replacement; if the solenoid valve coil burn Damage or spool stuck, should replace the solenoid valve; if the time relay damage, it should be replaced.

6, conveyor belt deviation

The failure of the performance of three kinds of conditions: First, the conveyor belt in the case of no-load and load to the same side of the deviation, the conveyor belt centerline sideways deviation, the conveyor belt less side of the material bias; Right deviation and no fixed direction; Third, the conveyor belt conveyor belt in the central deviation.

Uneven foundation, flat roller adhesive material, uneven around the groove roller and the main and passive roller unbalanced adjustment will cause the conveyor belt deviation. If the conveyor belt in the case of no-load and load to the same side of the deviation, indicating that the conveyor belt on both sides of the tightness is not the same or rack rugged. At this point, you should first leveling the base of the rack, remove the adhesive on the flat roller, adjust the tensioning screw or weight. If the conveyor belt left and right deviation without a fixed direction, then the conveyor belt relaxation, should adjust the tensioning mechanism. If the conveyor belt in the middle of the conveyor deviation can be adjusted by adjusting the position of the roller group to correct, as shown in Figure 1.

Adjustment method: If the conveyor belt to one side, the side of the side of the roller conveyor belt to move forward direction, the other side of the roller group can also be moved back (or the other side of the roller bracket appropriate height) . The return roller group is the same as the load roller group adjustment method. For long conveyor systems, it is very effective to adjust the idlers.

Adjustment to the drum adjustment is an important part of conveyor belt deviation adjustment, the drum installation location must be perpendicular to the conveyor conveying the direction of the center line, or inevitable deviation. As shown in Figure 2, if the conveyor belt to its right deviation, it should be the right side of the bearing seat forward (or the left bearing seat back); If the conveyor belt to the left side of the drum deviation, should Move the bearing on the left side forward (or the right bearing seat rearward).

If the conveyor belt relative to the driven roller deviation, adjust the method and active drum just the opposite.

Zhengzhou Xinfeng Machinery Co., Ltd. Main concrete mixer, concrete mixing station, stabilized soil mixing station, concrete batching machine, concrete conveying equipment, please call to discuss!