General Description

Type CRQW submersible sewage pump is newly developed on the basis of the advanced technology from international. Is used for industry and commerce, the living area，urban sewage treatment plant, waterworks，civil air-defense construction，hospital，hotel and so on. They can also be used in public works, explore, country methane, irrigation, deliver water with impurity. The flow-rate range of the delivery water is 7-10000m3/h, lift range is 7-60m,power range is 0.55-315KW, caliber range is φ25-φ700 mm.

Service conditions

l  Medium temperature should not above 60℃, Maximum density is 1.3×103kg/m3.

l  If the pump without a build-in self-circulation cooling system, its motor should not expose above water more than half.

l  Deliver medium’s PH value is between 4 and 10.

l  Solid particle passing capacity is 60% of the inlet diameter, the length of the fiber is 5 times to inlet diameter.

Instruction of pump type

Example: 100CRQW100－15－7.5

100 in the front: Pump outlet diameter is 100mm

CR: Company code, means produced by CREDO PUMP

QW: Submersible sewage pump

100 after: Flow capacity 100m3/h

15: Head is 15m

7.5: Motor power is 7.5KW

Structure

Type CRQW Submersible Sewage Pump adopts particular single blade or double blade; advance the ability for get across feculence. Fiber about 5 times as pump caliber can across.

Mechanical seal adopt fresh model cemented carbide rot-proof material, and at the same time, we improved on the airproof to the single-ended double-face mechanical seal, let them work in oil chamber for a long period of time.

The whole structure is compact;, volume is small, little noise and the energy saving result was apparent. The machine needn’t pump room .It can work just dinning into water, so reduce project cost.

According to need, we can equip safety protection control cupboard to protect the pump, advanced the safety and reliability.

The float switch can control automatically, do not need specially-assigned person. It’s very convenient.

According to need, we can equip automatic coupler installation system. So people needn’t get into the drainage ditch.

Can be used in all the range of lift ,and it won’t overload.

There are two different install way, fixed type automatic installation system and movable type automatic installation system.