How to solve the problem of blockage？

Concrete mixing and conveying pumps, as concrete conveying equipment designed for rural concrete pouring 

construction, have been widely used in various fields. However, blockages can occur due to aggregate issues. 

So, what are some methods for resolving blockages in concrete mixing and conveying pumps? Let's take a closer look.

1. Select Proper Aggregates: Due to non-standard aggregates and initial operator unfamiliarity, pipe blockage is 

relatively easy to occur. Standard pumpable gravel is 1-3cm, and medium-sized sand is preferable. When pumping

 upwards, minimize pipe bends to reduce pumping pressure; when pumping downwards, avoid vertical downward

 movements to prevent moisture loss and increase the likelihood of blockage. Operators should carefully observe

 the mixer's output and adjust accordingly to prevent overly dry concrete.

2. Reverse Pumping Method: If blockage occurs during concrete mixing and conveying pump operation, reverse 

the pump three to four times. This usually clears the blockage automatically. If not, dismantle the pipe to clear 

the blockage. First, locate the blockage and dismantle the pipe. It is important to note that before dismantling 

the pipe, reverse the pump several times to prevent pressure inside the pipe from splashing during dismantling 

and causing personal injury.

3. Tapping test method: If the fine stone pump encounters a blockage during operation, while running it in both 

forward and reverse directions, you can take a small hammer and tap each section of the pipe. Listen to the 

sound while tapping. If the sound is very deep, you can determine the location of the blockage. Generally, the 

most likely places to get blocked are at bends and the ends of the pipe, while the chance of blockage at straight

 pipes is almost very small.