In the actual operation of the shotcrete machine equipment, the rotor clogging, the discharge elbow clogging, and the sandblasting pipe clogging are prone to occur cause of issue:
1. The aggregate particle size is too large.
2. The moisture content of the dry mix is too large.
3. The conveying air pressure is too low.
The intake pipe segment is too small, and the compressor supply is small:
1. If the feed pipe is blocked, stop the shotcrete machine, close the gas valve, remove the feed pipe from the elbow, open the gas valve, and blow out the rotor material. Then check the feeding pipe, tap the blockage with a wooden stick to loosen or hollow out the blockage (Note: Before disassembling the discharge elbow or pipeline, the pressure in the feeding pipe should be reduced to 0)* The conveying pipe is then connected to the elbow and blown out with compressed air. If the conveying distance exceeds 40m, each 20m long pipeline should be treated separately.
2. Stop the rotation of the wet shotcrete machine and close the air valve. If the discharge elbow is blocked, the pipeline should be disassembled, and the elbow and rotor material cavity should be cleaned to reduce the water-cement ratio of the mixture.
3. Stop the motor and the air supply pipe. If the rotor is blocked, disassemble the air inlet pipe and the upper air pipe, and clean the rotor material cavity with a brush.
4. Replace the large-section air duct with a large-capacity compressor.
