Haomei can be your trusted concrete pump supplier in China, we supply trailer concrete pump, concrete pump truck with boom and concrete mixer with pump. The different type concrete pump has the different advantages. The concrete pump truck is easy to use, but the trailer concrete pump can make up for the height that the boom pump can not reach, and the price is relatively cheap, so when choosing, users can choose the corresponding concrete pump type according to their own needs.

To adjust the pumping displacement of the concrete pump, the following methods generally used:
First, engine Speed Adjustment
Adjust the engine speed to change the displacement of the concrete pump, resulting in changes in the pumping speed and achieving pumping displacement control. The change of the engine speed also changes the moving speed of the boom, which may become an irreconcilable contradiction in the construction.

Second, mechanical adjustment
By changing the size of the throttle opening manually, the concrete pump displacement can be changed. The advantage is low cost, and the disadvantage is that it needs to be adjusted manually on the car. For remote control operation away from the concrete pumps, it causes great inconvenience and the adjustment accuracy is low.

Third, electronically controlled proportional valve adjustment
The proportional amplification board outputs a PWM signal to drive the displacement control proportional valve. Through the (remote control / panel control) switch, concrete pump supplier can easily adjust the input of the proportional amplifier board by the wireless remote control or control panel, so that the proportional amplifier board outputs a 200-600mA PWM signal to drive the displacement control proportional valve.