Cutter system for pump suction

A cutter pump device for a pump, comprising:

• an impeller concentrically located in a volute of the centrifugal pump, the volute defining a chamber and having a front wall with a front annular flange defining an inlet port, the impeller having a rotational axis about which the impeller rotates within the volute, the impeller including an impeller vane having an inlet angle, the impeller having an inlet end that extends into and sits concentrically within the front annular flange;
• a wear ring adjacent the impeller between the impeller and the volute;
• a rotor releasably attached to the impeller, the rotor being a cutter auger radially concentric within the impeller in the volute and including a central section and an auger vane extending away from the central section,
• a stationary cutter plate releasably attached to the volute, concentric with and adjacent to the cutter auger, the stationary cutter plate including a plate ring and a first set of teeth extending inwards from the plate ring towards the rotational axis of the impeller, the first set of teeth being in shearing communication with the auger vane.

A centrifugal pump, comprising:

• a volute having a front wall with a front annular flange defining an inlet port;
• an impeller concentrically located in said volute, said impeller having a rotational axis about which said impeller rotates within said volute, said impeller having an inlet end that extends into and sits concentrically within said front annular flange;
• a cutter ring releasably attached to said impeller, said cutter ring concentric with said impeller and including a first set of teeth extending inwards towards the rotational axis of said impeller;
• a wear ring about said cutter ring between said cutter ring and said volute;
• and
• a stationary cutter plate releasably attached to said volute, concentric with and adjacent to said cutter ring, said stationary cutter plate including a plate ring and including a second set of teeth extending inwards from the plate ring towards the rotational axis of said impeller, said second set of teeth being in shearing communication with said first set of teeth.

A centrifugal pump, comprising:

• a volute defining a chamber, the volute having a front wall with a front annular flange defining an inlet port;
• an impeller concentrically located in the volute, the impeller having a rotational axis about which the impeller rotates within the volute, the impeller including an impeller vane having an inlet angle, the impeller having an inlet end that extends into and sits concentrically within the front annular flange;
• a wear ring adjacent the impeller between the impeller and the volute;
• a rotor releasably attached to the impeller, the rotor being a cutter auger radially concentric within the impeller in the volute and including a central section and an auger vane extending away from the central section,
• a stationary cutter plate releasably attached to the volute, concentric with and adjacent to the cutter auger, the stationary cutter plate including a plate ring and a first set of teeth extending inwards from the plate ring towards the rotational axis of the impeller, the first set of teeth being in shearing communication with the auger vane.