The impellers of deep well pumps have two structural forms, semi-open and closed impellers

Features of semi-open impeller:

1. It is suitable for occasions with large sand content (more than 0.01% content).

2. During use, it is required that the flow rate needs to be adjusted within a large range during operation.

This type of pump requires high axial clearance adjustment, because if the axial clearance is adjusted too high, it will cause serious clearance leakage, which will affect the performance of the pump. If the axial clearance is adjusted too low, it may cause friction between the impeller and the blade shell, Increase the motor load, causing overload and other phenomena.

Features of closed impeller:

1. Usually suitable for clear water with sand content less than 0.01%.

2. The requirement for axial clearance adjustment is relatively low.

The outlet pump seat adopts integral casting, which has beautiful appearance and good shock absorption effect. The connection methods of the transmission shaft are: threaded or ferrule coupling.