The mixer truck is a special truck used to transport concrete for construction. It is the main force in infrastructure projects. If the ready mixed concrete is transported from the mixing plant to the construction site, more and more concrete will remain if it is not cleaned in time. Over time, it will cause the pressure of the mixer truck. Today, let's talk about the problems existing in the water path cleaning system of the mixer truck and the related contents of the improvement direction.
At present, the pressure gauge on the pneumatic control box of the mixer truck can only display the pressure in the water tank when the water tank is cleaned, and cannot display the pressure in the water tank when adding water or closing water In order to observe the pressure change in the water tank in real time, a pressure tap can be added at the upper part of the water tank, and the pressure gauge can be integrated into the existing air control box. Through the new pressure gauge, the pressure change in the water tank can be found in time when the pressure reducing valve and safety valve are in failure.
The air control box takes electricity directly from the chassis cylinder. If the driver forgets to close the air control box and water drain valve, the air control box will always inflate the water tank during the driving process of the vehicle, which may cause abnormal pressure during braking. Come down, there is a potential safety hazard. In order to avoid this potential safety hazard, a ball valve can be installed between the air control box and the chassis gas cylinder. The ball valve can be closed during the driving of the vehicle. When the vehicle is driving, the ball valve needs to be opened. The water tank needs to be inflated.
Due to the special working conditions of the self loading mixer, the stability and convenient operation performance of the waterway cleaning drum are very important. At present, the pneumatic water cleaning system used by most mixer trucks is easy to operate. Compared with the pump cleaning system, the cost is lower and the number of fault points is reduced. The pressure of the pressure reducing valve regulating the air pressure in the water tank is usually set to 0.4MPa, and the pressure of the safety valve on the water tank is set to 0.5MPa. The use of pressure reducing valve and safety valve must be checked regularly to avoid failure due to pressure reducing valve and pressure valve. Cause excessive pressure of water system and cause explosion of gas pipe and water pipe.
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