Application of concrete mixing plant

Concrete mixing plant is a combination of multiple equipment used to produce concrete professional machinery. Excellent concrete mixing plant productivity is not only high, but also to ensure the quality of concrete and save cement. It is often used in large quantities of concrete, long duration, large concentration of large, medium-sized water conservancy, electricity, bridges and other projects.

With the development of municipal construction, the use of concentrated mixing, to provide concrete mixing station has great advantages, which has been rapid development, and to promote the construction of concrete pumping, to achieve mixing, transportation, pouring machinery to create conditions for joint operations.

So, how to choose the right concrete mixing plant?

Performance of concrete for construction

Thus choose what kind of mixing host. Such as water conservancy projects must be used to force the mixing console. In addition, should also be based on the type of concrete can be mixed with optional ingredients and storage silos.

Construction of concrete task and its duration

Use these two parameters to choose how much the mixing station. If the coefficient is K, the specifications of the mixing station X = M / (T * H * K) shall be used, where K is 0.7 - and the number of days for the concrete is M; 0.9. In the selection also consider the transport of finished concrete. Such as: direct pumping or vehicle delivery. The volume of the delivery vehicle is also an important basis for determining the type of mixing station.

Construction environment and construction object

In the choice of the purchase of concrete mixing plant, should be fully taken into account the construction and construction of the environment, so as to ensure the smooth construction and construction quality. In the following circumstances we suggest that you are well prepared.

When the site to be a one-time pouring a larger amount of high quality requirements, and there is no reinforcements near the mixing station, the best choice of two smaller mixing station, or choose a master of a pair of dual-machine preparation. When the site traffic inconvenience, maintenance personnel access to the site need to spend a lot of time, the best choice with the same smaller specifications of the double station, or prepare enough spare parts, so as to ensure the smooth progress of construction.
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Concrete Mixing Plant Flying Dust Treatment

1, dust control:

In the concrete mixing station is easy to produce dust in the main place is the mixing tower feed and material field and as well as the powder tank. In order to prevent dust spill the selected equipment of the mixing plant is closed mixing. In the production to further eliminate the dust, add the activities of color steel plate for the dust, the use of closed dust discharge space, will produce dust control in the enclosed space. In the cement feed mouth to add two external symmetrical water spray tube for dust suppression, from the source to prevent dust diffusion. The main yard is installed in the top of the sprinkler device, in the material field when the dust can be manually or automatically control the spray to suppress dust, material field mouth can also be installed automatic high pressure water curtain. Prevent dust spill.

2, wastewater treatment:

In the concrete mixing plant set in the drainage ditch, in the drain terminal set three sedimentation tank, and equipped with solid-liquid separation device and the filter device, the waste water in the waste separation for re-use. Will be recycled after the use of water, so that the entire production area of ​​the wastewater to achieve the full treatment after the recycling, that is, to meet environmental emissions standards. To achieve zero emissions of sewage.

3, noise control:

Concrete mixing station noise mainly from the mixing of host equipment and air compressors and vehicles within the station. The noise of the equipment itself can be installed in a closed concrete structure, in the course of the use of maintenance and repair, that is, to extend the service life of equipment, but also reduce noise pollution. For the noise generated by the vehicle, such as in the residential area of ​​the station will need to be based on the actual situation can also be set partition wall, compartment with.

4, solid waste treatment:

Solid waste in the concrete mixing plant is mainly cleaning and gravel separation to produce solid waste and household waste. Station built garbage pool unified stacking and unified management, unified treatment. Production of waste can be calculated according to the actual situation to the concrete production, living waste should be unified by the municipal garbage truck clearance, unified treatment.
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Detailed classification of concrete mixing plant

I believe that a lot of friends just contact the concrete mixing plant on the type of mixing station is not very understanding, and now I am here to give you a brief introduction to the detailed description of the concrete mixing station.
1. According to the purpose of the production of concrete products can be divided into engineering concrete mixing plant and commercial concrete mixing plant, the two categories are more common name. Engineering concrete mixing plant produced by the product is generally more single, for a project, the general productivity is limited; and commercial concrete mixing plant products are widely used in different sites of the site demand, like the same commodity circulation.
2. According to the concrete mixing plant structure, can be divided into mobile concrete mixing plant and fixed concrete mixing plant. Like the construction site to produce multi-purpose mobile concrete mixing plant; and in the fixed area production is fixed.
3. According to the concrete mixing plant layout, it can be divided into single-stage and two-stage concrete mixing plant. In general, the double-stage production efficiency is relatively low compared to the single-stage type, and the production rate is slow.
4. According to the concrete mixing station work, it can be divided into semi-automatic concrete mixing station and automatic concrete mixing plant. The main difference between these two types of control system is the way, generally semi-automatic for the production capacity of small, less production tasks of the mixing station used; fully automatic production capacity requirements for the use of high mixing stations.
5. According to the concrete mixing station operation form, can be divided into two types of periodic and continuous. The difference between the two is that the periodic feed system and the discharge system are circulated in accordance with a certain cycle, while the continuous feed and discharge are carried out continuously
6. According to the scale of concrete mixing station, generally divided into small concrete mixing plant large and medium-sized concrete mixing station two categories. The difference between these mixing stations is mainly for the production efficiency, production capacity and production of concrete types.
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Whether the quality of concrete mixing plant clearance

Although there are many users to buy the use of concrete mixing plant, but it is not very understanding of the mixing station, do not know whether the quality of mixing station is a good judge. Then this section take off the machine for everyone to briefly introduce, how to check the quality of concrete mixing station clearance.

First, the first is from the falling mixer of the concrete mixer, the discharge ring radial runout can not exceed 1% of the diameter of the inlet. In addition, we must also check the concrete mixer on the vibrating screen mesh steel quality, mesh and sieve size is reasonable, as well as the installation of the screen accuracy.

Second, followed by the operation of the transmission system to be flexible, no abnormal sound.

Third, followed by belt conveyor, bucket elevator and cantilever drags and other transmission to be smooth, flexible operation, the brake can be high, no abnormal noise, no card chain.

Four, followed by the metering system. To check the sensitivity and accuracy of the metering system.

Fifth, in addition, the reducer to raise the temperature should also pay attention to, to achieve the temperature on the qualified book.

Six, and then measure the bucket into the material to be smooth, can not appear accumulation, flashing and so on.

Seven, the safety valve can not appear leak phenomenon.

8, the quality of cement tanks to be qualified.

Nine, supporting the installation of the line should be reasonable, the equipment installed to be correct.
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Application of concrete mixer

Concrete mixer project construction has played a significant role. It can also be applied to many other constructions. Therefore, it must adapt to the needs of the terrain conditions, according to the different requirements of the design of the machine and its components, which is very important machine technology functions are: modify, add and expand, the automation system should have a high degree of flexibility.
1. Mixer
Control system to ensure safe and reliable task is to provoke the operation, which is mainly motor and mixer closed-loop control mechanism, covering the mixing tank indirect drive control is also necessary. Today, most mixers are consistent, and in addition, the measuring device used to measure humidity in the system is equipped with a microwave sensor and a temperature sensor
2. Concrete management
Concrete management equipment, including concrete silos, concrete metering, said components controlled by the inverter spiral. A metering or radar sensor used to measure the material of a silo. In order to avoid a lot of dust, concrete mixer, must also be equipped with air filters, vibration principle, the use of dust in the air automatically deleted. In addition, the use of sensors can also protect the silo, to avoid excessive pressure on the warehouse.
3. Transport sand
In the unloading of sand or by the strain sensor in the conveyor belt sliding. If you are using gravel cars, they are controlled by the inverter, terminal position sensor and safety terminal position sensor. The sand bin consists of one to two vibrators that ensure accurate packaging material. In demanding applications, silos are measured by radar sensors. If necessary, you can also use the radar sensor to measure the moisture in the sand. Therefore, the concrete mixing process obtained in the measurement data collection.
4. Measure the amount of water
First with two control valves weighing by weighing, and then use a parallel flow meter more accurate measurement.
5. Add the accessories
Concrete is produced according to the specific requirements of different applications, so its characteristics are not the same. Today, it is hard to imagine that no ingredients are added to the concrete production process. These auxiliary materials are mainly supplemented by pumps and metering. The following are the same as the.
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Maintenance of concrete mixing plant

Maintenance of concrete mixing plant
1, see the smooth oil within the blender oil cups.
2, once a week to see the oil mist of a high degree of timely filling.
3, once a day, open the water valve, the air compressor and gas tank condensed water discharged.
4, some bolts and nuts should always check is not loose, timely tightening.
5, water supply, gas, admixture system and the equipment is not normal.
6, check the electrical control system and the instrument is not normal.
7, see the concrete mixer of the mixing shaft and simplified cleaning is not clean. If the agglomeration of the agglomeration of concrete too much, it is necessary to manually enter the finishing.
8, regular finishing may change the cement warehouse filter in the filter.
9, regular finishing the host dust pipe in the residual powder, to prevent blocking.
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Concrete mixer which accessories

Concrete mixer is divided into general mixer and forced mixer, the current project are used in the mandatory, the difference is the former is the shell in the turn, which is inside the stirring. Mandatory mixer commonly used accessories are: lifting bucket wheel, stirring arm, leaves, hopper limiter, liner. Usually mixing arm, leaves, lining for the wearing parts, in the construction should be replaced.

(Pulse), filter (triangle), siren warning lights, red hose (soft pipe), the flow of liquid, the use of high- (Inlet), the host wind pressure solenoid valve * (domestic), the regulator, the host of the air pressure solenoid valve (inlet), the host air pressure solenoid valve * (domestic), the regulator Dust filter, air compressor filter, discharge door signal switch, electronic control valve, cutting ring glasses board, gate valve assembly around, wear-resistant strip, wear-resistant round, wheel, shaft head shell, Wait.
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Safety of the concrete mixer steps

1, the concrete mixer should be installed in a solid flat on the ground, to prevent dumping due to ground subsidence.
2, in the use of operations, should be clean, fastening, lubrication, adjustment, anti-corrosion procedures to check the machine system, and to meet the requirements; accident hidden trouble must be eliminated.
3, power-driven mixer, power distribution equipment should be installed appropriate fuse and grounding device to ensure the safety of electrical systems.
4, the mixer is running, do not let the gravel into the mechanical part of the operation, to avoid the parts were stuck and damaged.
5, after the hopper lifted, the hopper is strictly prohibited by someone or stay, such as must be under the maintenance of the bucket should be shut down to cut off the power, and the hopper hanging with the insurance chain after the prospective. Feed hopper should be slowly put down, so as not to fall too fast, damaged parts or failure.
6, before the discharge can not be no reason to stop, but can not start feeding after feeding, feeding capacity can not exceed the specified capacity.
7, before the hopper is not stopped before the feed.
8, the mixer body must be installed firmly solid. Should be checked before the work of the clutch and the brake is flexible and reliable, whether the wire rope broken wire damage, the protection device is complete and reliable, and test run; such as stirring cylinder rotation smooth, not beating, not deviation, hopper up and down the door and flexible, Hoop under the cam mechanism is normal before they can work. Prohibit the use of overload; mechanical operation prohibited by hand or other objects into the mixing tube to fiddle, cleaning and repair work.
9, when the mixer full load operation in the event of a sudden power failure or failure, the application of human mixing cartridge material will be cleared, and then check or repair. Do not allow the full load to start the mixer, to prevent the current is too large and damage the motor.
10, the operator must enter the mixing tube for cleaning or maintenance, should strictly control the power to prevent accidents.
11, after the end of mixing work, to clean the mixer in time to prevent concrete agglomeration. When cleaning, to prevent electrical equipment damp. The cleaning work must be carried out after power failure to prevent electric shock
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Preparation of concrete mixing plan

Concrete mixing plant is measured by the raw materials, weighing ratio later, after mixing through the mixer, after all, made of concrete equipment. Made of concrete for bridges, roads, construction and other projects to meet our needs. Therefore, the accurate use of concrete mixing plant is very important.
First, determine the occasion
Concrete mixing station in the station before the first first to determine the occasion, followed by a good occasion to plan to determine the needs of self-built concrete mixing station type, once again based on the Hongbin company supply the basic map of concrete infrastructure equipment The plan. Transport routes, raw material placement, console, dormitory plan, etc. must be determined early.
Second, the supply of water and electricity
Before the arrival of the concrete mixing station equipment, first pull the electricity, repair the pool. Under normal circumstances the concrete mixing station voltage is industrial electricity (380V). Ready to do the job in the future to ensure that the concrete mixing station equipment arrived at the occasion to be active equipment and equipment, good activity into production.
Third, the inspection of raw materials
The raw material of the concrete mixing plant usually refers to sand (coarse sand, fine sand), stone (stone, stone, small stone), cement and so on. Before the station to take the acquisition of raw materials, raw materials arrived at the occasion, to be seriously checked. Because only qualified raw materials to ensure that the quality of concrete labels. The following are the same as the .
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Check the preparation of the screw conveyor

Screw conveyor for the concrete mixing station cement warehouse dedicated conveyor equipment, is also very important mixing station auxiliary equipment, although the screw conveyor is not used, but we can not ignore the protection of its work, it appears to us when the problem To a lot of trouble we know that if you do not want to let the cement in the transport problems, we need to do the following:
1. Before using the first need to check the need to add or replace the lubricant where the screw conveyor is small, but need to add a lot of lubricant, but a lot, so to check it;
2. Before use to clean up the machine to ensure that the entire machine clean;
3. Check the various fastening parts to see if loose, if loose, immediately tightened;
4. Check the spiral blade, screw shaft, sliding bearings and other parts prone to failure to ensure that these parts are intact; (pay special attention to check the spiral blade wear, spiral leaves more easily wear, if serious, then you need to change the new, To avoid the use of the process of failure.)
5. Check the screw conveyor reducer whether there is oil spill, and then see its clean up;
6. Before use in the air machine test run, in the test run to pay attention to the various parts to see if there are abnormal phenomena, or a strange sound. The following are the same as the.
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The concrete batching machine is installed using common sense

1, concrete batching machine should be installed in a solid bench. When the long-term fixed, should be embedded anchor bolts; in the short term use, should be laid in the base of the pillow and leveling stable. The following are the same as the "
2, the concrete batching machine console, the operator should be able to see the work of the various parts of the situation. Electric control machine console, should be padded with rubber sheet or dry wood. The following are the same as the "
3, the motor and electrical components of the wiring is firm, to protect the zero or grounding resistance in line with regulations. The following are the same as the "
4, before the operation should be hopper to enhance the test, should observe and confirm the clutch, brake flexible and reliable. The following are the same as the "
5, the transmission, work devices, brakes, etc. are fast and reliable, open gear, pulley, etc. are protective cover. The following are the same as the "
6, you use the concrete batching machine operation, the mixer should be fully cleaned; when the operator needs to enter the tube, you must cut off the power or remove the fuse, lock the switch box, put on "no closing" signs, and Clean the workplace, cut off the power, lock the switch box.
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Summary of knowledge of concrete mixing plant

Summary of knowledge of concrete mixing plant
1, Introduction to concrete
Concrete is cement for cementing materials, sand and other materials will be solidified from a kind of artificial building materials, hardened with the nature of stone, referred to as concrete.
The types and performance of the concrete required for different construction projects are very different. When the production is done, if the performance and use of the concrete produced are understood, the equipment can be adjusted accordingly to improve the quality of the concrete mix and Not prone to error.
One of the main signs of the performance of concrete is its strength, is a side length of 150mm square test block after 28d standard maintenance, measured by compression test, the commonly used strength range is 10-60Mpa, the general strength level C20 -C60 said.
The workability of the fresh concrete, or called the workability, refers to whether the concrete mixture is easy to construct and operate, and obtain uniform quality, compact performance, is the concrete process performance collectively. Including the mobility, cohesion and water retention of the three aspects of the meaning. Liquidity is the corner that is easy to flow and is easy to fill the casting template. Cohesion refers to the structural properties of concrete is uniform and stable, and is less prone to delamination and segregation. Water retention is not prone to bleeding.
The greatest impact on the construction of concrete is the mobility. The fluidity of the plastic concrete is expressed in terms of slump, which is generally in the range of 10 to 200 mm. The greater the value, the stronger its liquidity. Dry hard concrete in Weibo consistency, the range is generally 5-35s. The higher the value, the higher the dry hardness of the concrete.
The workability of the concrete is determined by the engineering structure and the construction method. Now the construction site to use more fluid or large flow of concrete, only the use of precast concrete concrete dry hard concrete.
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Advantages of concrete mixing plant

Advantages of concrete mixing plant
1. Model is clear; hzs series of concrete mixing station model is very clear, from the hzs25 concrete mixing plant, hzs35 concrete mixing plant to hzs180 type concrete mixing plant, hzs240 concrete mixing plant range. Each model of the hzs series of concrete mixing station in the figures represent its theoretical productivity, at a glance, the customer can choose according to their own actual situation.
2. Simple and convenient operation: hzs series of concrete mixing station is simple and convenient operation, whether it is large-scale concrete mixing plant, or small concrete mixing stations are used automatic control system, although the small model concrete mixing station can use centralized control system, but the operation The same is very simple, convenient, save manpower and material resources.
3. Excellent quality: No matter which model of the hzs series of concrete mixing stations are equipped with high-quality JS series of concrete mixer and PLD series of concrete batching machine, production of good quality, accurate ingredients, other equipment can be equipped according to customer needs, selectivity Strong, to the greatest extent possible to meet customer needs.
4. Accurate and reliable measurement; the accuracy of raw materials measurement is related to the quality of finished concrete, compared to the artificial mixing, hzs series of concrete mixing station measurement methods are electronic sensor weight measurement, with high precision, reliable, easy maintenance And so on, in the accidental occurrence of weighing tolerance, the part can be deducted in the scale bucket, to ensure accurate and reliable measurement of raw materials.
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How to reduce the failure rate of concrete mixing plant

1, to strengthen the daily maintenance of the motor
When working with the motor, pay attention to the working environment, do not be in a very bumpy state, to prevent damage to the motor or to reduce the service life. But also to conduct a visual inspection, the fan is working properly, whether there is abnormal vibration, coupling connection is reliable, whether the base fixed fastening, bearing work is normal (listening to sound), the temperature is normal (infrared thermometer), current Normal (clamp ammeter), another winding motor must also check the carbon brush and slip ring. If a particular aspect of the abnormal, it is necessary to hurry to repair the motor, otherwise, after the serious situation can not deal with their own.
2, concrete mixing plant operator skills considerations
Small concrete mixing plant on the operation, maintenance personnel requirements are lower. Large-scale concrete mixing plant structure is complex, high degree of automation, the operation, maintenance personnel requirements are higher.
3, the concrete mixing station operator to the concrete mixing station equipment parts often with the appropriate adjustment of the gap.
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Stabilization of soil mixing plant to improve the efficiency

Stable soil mixing plant production efficiency determines the level of the progress of the entire project. Mixing quality is also related to the quality of the project, in order to ensure the quality of mixing and mixing efficiency, you can use the excavator overturned to balance the moisture content of raw materials. As the black ash, white ash water content determined by a number of uncertain factors, especially the white ash, digestion quality, their quality, whether the sieves affect the use of lime efficiency. Therefore, before use, to ensure that the most suitable gray construction of water content, to grasp the appropriate stacking time. After the stacking, if too wet, you can use the excavator to roll several times, until the appropriate water content, both to ensure the construction efficiency, but also to ensure that the ash dose. It is also important to locate the stable soil mixing station. Especially whether the transport within the area is also related to the production efficiency. Because in the production, not only to take into account the efficiency of the loader feeding, but also consider the transport vehicles do not stop jamming, and feed vehicles do not affect the construction site. In addition, the loader should take the material on the silo sieve and then pick up the material, so that it can not feed the material too late, otherwise it will break the material. Therefore, the improvement of the efficiency of the stabilized soil mixing station is composed of many factors, the need for man-machine and external factors, internal factors in close cooperation with all aspects.
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Reasonable Arrangement of Production Line of Concrete Mixing Plant

Concrete mixing plant from the actual location to rational planning and layout, to enhance the production line system reasonable and efficient. This article on the mixing station production line layout to make recommendations for reference.

1. The positioning site of the production line

In the factory area to determine the location of the production line, according to the traffic road Huitong principle, the road can not have a broken road. That is, there are three rows of parking spaces in the mixing floor, the left and right sides of the powder parking spaces and channels, mixing tower behind the powder parking spaces and channels. Another aggregate around the warehouse also need to be smooth, in order to facilitate equipment repair. Plant road after the cycle, the vehicle traffic smoothly, to avoid the chaos caused by foreign vehicles chaos traffic jam phenomenon.

2. Other equipment layout of the production line

① weighbridge. Weighbridge is a high utilization of concrete mixing plant equipment, the material should be used in and out. There are two types of weighbridge in the production line, one is the ground type, one is the underground type. Regardless of the kind of choice, need to set the barrier next to the parcels, the election on the type of side and side by side better.

② car wash site. Combined with waste water, waste concrete recycling, to achieve the "zero emissions" purposes, the entire recycling system can not be arranged too far away from the main building, or set up a transfer pool will bring control and clean up the difficulties, the number of vehicles according to the number of vehicles Or above.

③ transformer power distribution room. Distribution room in the mixing station in the production line layout is the first ventilation and the surrounding clean, then the distance, distance from the power cable constraints, the layout of the main building when the direction of the better.

Concrete mixing plant production line reasonable arrangement allows the mixing station to bid farewell to dirty, truly energy-saving control, the mixing station business is also a development opportunity.
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Concrete mixing station encountered unexpected solution

1, cement, fly ash, slag transported to the wrong storage tank, should be the most unfortunate situation. Such as low-grade cement hit high-grade cans, and perhaps half of the tank in the high-grade cement, can only be used with low-grade cement. Experiments confirmed that the powder in the tank movement is unstable, can not control the next sub-order.
2, excessive admixture. Should be promptly with the admixture factory contact, admixture plant according to product function, help out with a processing plan.
3, mistakenly use fly ash or slag as cement. Can not be used. If conditional, recyclable use.
4, concrete to the construction site after the consistency is small, can not pump. Low-grade can be mixed with the proportion of cement slurry added to the concrete side. High-grade can be added in proportion to the water, drop the use of labels.
The above is that the concrete mixing plant may be a problem, I hope to help you.

Selection of stable soil mixing station supporting equipment standards

Stable soil mixing station equipment in China in recent years the extensive application of China's road construction industry to improve the overall level. This year the country has developed a thirteen five plan, with the beginning of the first five-year plan, the state of the construction projects in various regions to increase investment. Market demand for stable soil mixing station equipment is also rising. But the investment and mixing station equipment, customer groups on the working principle of the equipment and performance do not understand, will cause the purchase of the mixing station equipment does not match the standard. Then in the choice of mixing station equipment should pay attention to what matters?

First, in the choice of stable soil mixing station equipment, we must be based on the construction project information analysis, to select the appropriate power of the mixing station equipment.

Second, we choose to stabilize the soil mixing station equipment, we must carefully understand the equipment to the work performance data, in order to ensure that the mixing station between the various equipment matching.

Third, the stability of the mixing station equipment, high efficiency, is the source and the perfect system between the various systems, so the choice of matching mixing station equipment is also very critical.

Fourth, the stability of the soil mixing station equipment in the installation and commissioning, be sure to carefully check the equipment between each part is installed in place, so as to avoid the equipment in the debugging process of the phenomenon of damage.

Selection of supporting the stable soil mixing station equipment, is to ensure the smooth start of the project premise. So we choose the equipment, we must pay attention to the supporting performance of equipment. Thus ensuring that we invest in the benefits of mixing station equipment.
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