Due to the non-standard aggregate and unskilled operation at the beginning, pipe plugging is easy to occur. The standard pumped gravel is 1-3cm, and the sand should be medium sand. When pumping upward, try to reduce the elbow to reduce the pumping pressure. When pumping downward, try to reduce the vertical downward to avoid water loss and increase the possibility of pipe blockage. The operator should pay attention to the discharge of the mixer and adjust it in time to prevent over dry concrete.

敲擊檢測法：

Knock detection method:

在工作過程中遭遇細(xì)石泵堵管，進(jìn)行正運(yùn)轉(zhuǎn)和反運(yùn)轉(zhuǎn)的時(shí)候，可以使用小錘子，對管的每個(gè)部位進(jìn)行敲擊，同時(shí)聽其聲音，假如聲音很沉，就可以判斷堵塞的位置，一般情況下在彎曲處、管的尾端和末端是容易被堵塞，直管處堵塞的幾率很小。

During the working process, when the fine stone pump is blocked and the pipe is in normal operation and reverse operation, you can use a small hammer to knock on each part of the pipe and listen to its sound. If the sound is very heavy, you can judge the position of the blockage. Generally, it is easy to be blocked at the bend, the tail and end of the pipe, and the probability of blocking at the straight pipe is very small.

反泵法：

Reverse pump method:

在自動上料攪拌車輸送泵工作中如果遇到堵塞狀況，移動式混凝土攪拌車提示可以先將攪拌車輸送泵反轉(zhuǎn)，三到四個(gè)行程后，通?？梢宰孕信哦拢绻€是不行的，就可以進(jìn)行拆管排堵了。先可以找到堵塞的位置，進(jìn)行拆管，值得注意的是在拆管前，可以先將泵反運(yùn)轉(zhuǎn)幾次，這樣就能較好防止管內(nèi)的壓力在拆管過程中進(jìn)行噴濺，導(dǎo)致?lián)p害人身安

In case of blockage during the operation of the transfer pump of the automatic feeding mixer truck, the mobile concrete mixer truck prompts that the transfer pump of the mixer truck can be reversed first. After three to four strokes, the blockage can usually be discharged by itself. If it still fails, the pipe can be removed and blocked. Firstly, the blocked position can be found and the pipe can be removed. It is worth noting that the pump can be reversed several times before pipe removal, so as to better prevent the pressure in the pipe from splashing during pipe removal, resulting in damage to personal safety