What Is The Radial Cutting Reamer For The Impeller Inlet Of A Submersible Sewage Pump

Sep 19, 2024

Radial cutting reamer refers to the blade rotating on the same radial circumferential surface. The cutting reamer and knife holder are both installed in front of the impeller inlet, and the cutting reamer and shaft rotate together. The knife holder is installed on fixed stationary parts such as the pump body or pump cover, and there are many semi-circular flow channels arranged on the circumferential surface of the knife holder to restrict the passage of particles. Two cutting edges are formed on both sides of the flow channel. When the material enters, it will be thrown in the circumferential direction of the cutting device by the cutting reamer. When part of the material enters the semi-circular flow channel, it will be chopped and ground by the rotating cutting reamer, ultimately forming very small particles that enter the impeller flow channel.
This type of cutting reamer application is rarely reported, as its inlet flow section is composed of many small semi-circular flow channels, which limits the flow rate of this type of pump from being very large. Mainly used for small-scale domestic sewage treatment and the transportation of residue from biogas digesters. This radial cutting has the functions of cutting and grinding, and can handle materials with toughness and elasticity such as sanitary napkins without overloading the motor.
In terms of structure, the pump is relatively compact and easy to assemble. There are no requirements for the axial dimensions of the tool holder and cutting reamer, and the impeller adopts a semi open cylindrical blade; But the material of the knife holder and cutting reamer generally needs to use alloy steel with a Rockwell hardness of 60HRC, which increases the manufacturing cost of the pump. The structure of the radial cutting device is also relatively simple.

The above is the introduction of the impeller inlet with radial cutting reamer for submersible sewage pumps. If you want to learn more about cutting and mixing reamers, you can follow the official updates. If you have any questions or suggestions, you can directly call the official hotline, where senior engineers provide one-on-one service.