In production process of concrete batching plant, if users find powder feed slowly, how to solve it? Here, Huaning analyses the cause of such failure and solutions.

Symptom: screw machine feeding is very slow, feeding time more than 2 minutes, while the normal feeding in 20 seconds or less.

Analysis of the reasons: the main factors are poor powder silo discharge and screw conveyor damage and so on.The reasons of poor discharging are from powder arching, cement silo outlet caking materials, discharge valve opening too small,shortage of material in powder tank. The screw conveyor damage is mainly spiral blade deformation, can not normally delivery and so on.

Approach:

1) open pneumatic arch breaking device

2) check the powder silo discharge valve opening, and make the disc in a fully open position.

3) check if the material is caking on the powder silo discharge port.

4) check if the screw conveyor machine blade is deformed, such as deformation is removed correction or replacement.