1. After solidification, the main components of concrete are dicalcium silicate and tricalcium silicate. In theory, hydrochloric acid can react with it to release its solid state. Due to the small material port of small concrete mixer, the amount of hydrochloric acid is difficult to control, and hydrochloric acid can also react with the tank of mixer, so the operation is difficult to achieve. Usually, the tank body is cut by electric welding or gas cutting, and then the solidified concrete is broken mechanically.
2. Use "air cannon" to break the set concrete, and then shovel it out bit by bit. The lower part of the tank needs to be cut with an opening and opened with a cover that was originally tightened with a rose. This cover is used to turn on the air when there is a need to go in for work and to discharge materials in case of emergency.
In the process of canning, people need to ventilate inside the tank, and a fan is placed at the inlet of the charging tank of the small concrete mixer to blow in. When the "air cannon" works, it will cause dust and connect the water pipe to wet the broken concrete. After the concrete in the tank is broken and shoveled out, the cut part is welded, the upper cover is sealed, the water is filled to test whether the underwater rotation is normal, and a small amount of material is added to see whether the hydraulic press works normally.
If the concrete solidifies in the small concrete mixer, we should clean the mixer in time, and clean the mixer in time. Transport the next batch of concrete after the mixer is clean. Attention: because the concrete is easy to dry after losing moisture, it should be cleaned in time.