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.

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!

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.

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!

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）