Marine pumps can be replaced with wear-resistant metal or rubber gaskets and impellers, with long service life. The clearance between the impeller and the front bushing is easy to adjust and can be completely disassembled during maintenance. The bearing assemblies are lubricated with grease. V-belt drive, gear reducer drive, hydraulic coupling drive, variable frequency drive.

There are many kinds of dredgers, but the most important one is the dredge pump, which is the key equipment of the dredger and is often called the "heart" of the dredger.

A good mud pump needs to deal with mud with high impurity content, so suction and wide flow plate are very important for them.

When the pump is working, the engaging screw forms a seal chamber in the pump body. With the rotation of the screw, the liquid in the seal chamber moves axially with the seal chamber and is stably and continuously transmitted to the pump outlet. Since the capacity of sealing civilization has never changed in the working pump, there will be no pulsation when the pump delivers liquid.

The pump body adopts a round valve with special structure, which is opened when the outlet pressure is higher than the working pressure. Then, some medium will return to the inlet of the pump or storage tank through this annular valve. At the same time, the pump can be started under full pressure, thus greatly reducing torque.