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WQ Submersible Sewage Pump Structures

Bearing:

Imported SKF or FAG bearing, which with a reasonable confirgutation, can extend the duration of the pump. 

Cooling:

The built-in cooling system can have the pump normally work whether the motor is on or under the liquid surface. A part of the liquid is extracted to bring out the neat produced by the motor from the pump circulation to the cooling barrel and to the pump casing and, when external cooling is required, the cooling sleeve maybe separated from the pump casing and individually connected to the coling system. 

Motor:

F class insulation, max working temprature 155℃, and IPX8 protective grade. 

Mechanical Seal:

Use Bergman mechanical seal of Germany, two ways of the seal are in series with each other and individually work to separate the motor from the pump seal to provide the motor with a dual protection.

Oil Chamber: 

Oil can lubricate and cool the mechanical seal and preventing liquid from penetrating into the motor. The air of a certain amount left in side of the chamber can lower the pressure accumulatively raised. 

Impeller: 

With the optimized design, the impeller will not belocked up when to transport liquid with its optimum flow and rate and the maximum efficiency. There are suitable impellers at choice for every point of working condition. 

Pump Casing: 

Use the technique of CAD/CAM to make it of max efficiency and min wearability.