Cutter nut and cutter bar assembly
DCFirst Claim
1. A cutting assembly for a chopper pump having an intake end, the assembly comprising:
- an intake end plate having a body defining an opening to allow the passage of material there through, wherein the intake end plate attaches at the intake end of the chopper pump;
at least one cutter bar projecting from the body of the intake end plate into the opening defined by the body of the intake end plate;
an impeller having a plurality of impeller blades positioned adjacent the at least one cutter bar of the intake end plate; and
,a nut positioned within the opening of the intake end plate;
wherein the nut comprises at least one raised cutting projection having a cutting edge formed at a junction between a first surface and an adjacent second surface, the cutting edge of the raised cutting projection providing cutting action in coordination with the at least one cutter bar.
1 Assignment
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Accused Products
Abstract
A cutting assembly for positioning at the intake end of a centrifugal pump used for pumping liquids and slurries containing solid matter, including various types of refuse, and for chopping the solid matter which may thereafter be processed for disposal is disclosed. The cutting assembly includes an intake end plate having a body defining the opening to allow the passage of material, such as waste water and the like, therethrough. The intake end plate attaches at the intake end of the chopper pump. The assembly also includes at least one, and preferably a plurality of cutter bars projecting from the body of the intake end plate into the opening, and a nut positioned at the intake end and attached to the chopper pump within the opening of the intake end plate. Preferably, the nut comprises at least one raised cutting projection having a cutting edge formed at a junction between a first surface and an adjacent second surface, the cutting edge of the raised cutting projection providing aggressive cutting action in coordination with the cutter bars.
27 Citations
23 Claims
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1. A cutting assembly for a chopper pump having an intake end, the assembly comprising:
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an intake end plate having a body defining an opening to allow the passage of material there through, wherein the intake end plate attaches at the intake end of the chopper pump; at least one cutter bar projecting from the body of the intake end plate into the opening defined by the body of the intake end plate; an impeller having a plurality of impeller blades positioned adjacent the at least one cutter bar of the intake end plate; and
,a nut positioned within the opening of the intake end plate; wherein the nut comprises at least one raised cutting projection having a cutting edge formed at a junction between a first surface and an adjacent second surface, the cutting edge of the raised cutting projection providing cutting action in coordination with the at least one cutter bar. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A cutting assembly for a chopper pump having an intake end, the assembly comprising;
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an intake end plate having a body defining an opening to allow the passage of material there through, wherein the intake end plate attaches at the intake end of the chopper pump; at least one cutter bar projecting from the body of the intake end plate into the opening defined by the body of the intake end plate, each cutter bar comprising a cutting edge on an end, wherein the cutting edge of each cutter bar is formed at a junction between a first surface and an adjacent second surface, an impeller positioned at the intake end; a nut positioned within the opening of the intake end plate, the nut comprising at least one raised cutting projection having a cutting edge formed at a junction between a first surface and an adjacent second surface, the cutting edge of the raised cutting projection providing cutting action in coordination with the cutting edge of each of the at least one cutter bars. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification