What are the preparations before cleaning the concrete pump pipe?
Q: What are the preparations before cleaning the concrete pump pipe?
A: It is best to pump 0.5-1 cubic mortar first and finish pumping all of it. Then stop, flip the switch of the plate valve to release the pressure of the accumulator.
Q: What are the methods for pipeline cleaning?
A: Water washing and air washing. Whether it is water washing or air washing, the valve box and hopper must be cleaned.
Q: The following steps are used for washing
A: Put the cylindrical cement bag soaked in water and the cleaning ball into the cleaned cone pipe, connect the cone pipe and pipeline, close the discharge door, and fill the hopper with water (maintain the water source) Continuously). Pump water until the cleaning ball emerges from the front end of the concrete pump tube.
Q: Specific operation method during air washing
A: Air washing is compressed air washing. It is to plug the water-soaked cleaning ball into the air-washing joint first, then connect the first straight pipe connected with the reducing pipe, and attach a safety cover to the end of the pipe. The opening of the cover should face down.
Control the pressure of compressed air not to exceed 0.8MPa, and the air valve should be opened slowly, and the air valve can only be opened when the concrete can flow out smoothly. After the air washing is completed, the air valve should be closed immediately.
Water washing requires that the gap between the cutting ring and the eye plate (the butterfly valve pump requires the plate valve and the tie rod and the upper and lower wear plates) to be small, and a large amount of water is required, and the water after cleaning the ball must be strictly sealed to prevent forward penetration.
Q: Matters needing attention in water washing and air washing
A: At the end of the water washing, pay attention to the water in the pipeline and do not flow to the concrete pouring site to affect the quality of the concrete. This method is simple to operate, less dangerous, and more commonly used.
Air washing needs to be equipped with an air compressor, which must be operated in strict accordance with regulations. The pipe tightness is required to be good. But the washing is not too far, and it can be washed in sections at a long distance. This method is cautious and dangerous, so construction personnel should stay away from the exit direction to prevent pellets or cleaning balls from flying out and hurting people.
The above information is provided by concrete pump welding pipe factory.
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