Self-driving fluid pump
AssigneeKalish Canada Inc.
InventorsJulio Marsillo, Graham L. Lewis
Life of this patent
Estimating the term…
Abstract
A pump suitable for use with delicate fluids such as food products. The pump includes a casing having an internal cavity that defines a pumping chamber, an inlet and an outlet port, a first and second pumping rotors mounted for rotation in the casing, each pumping rotor including a first set of angularly spaced apart projections and a second set of angularly spaced apart projections. The first and second sets of projections of one rotor are in a condition of mesh with the first and second sets of projections of the other rotor, respectively. This feature allows one rotor to drive the companion rotor, thus eliminating the need of separate drive gears.
Claims14
A pump comprising a casing having an internal cavity that defines a pumping chamber;
- an inlet port for admitting a fluid in said pumping chamber;
- an outlet port for discharging the fluid from said pumping chamber;
- and a pumping arrangement including a plurality of pumping wheels, each having a plurality of angularly spaced apart projections defining therebetween inter-projection pockets for transporting the fluid in said pumping chamber between said inlet port and said outlet port, said projections being shaped as lobes substantially free of sharp edges, wherein the plurality of pumping wheels include a first pair of pumping wheels with a first and second pumping wheels mounted for rotation in said pumping chamber about a first common rotation axis, and a second pair of pumping wheels with a third and a fourth pumping wheels mounted for rotation in said pumping chamber about a second common rotation axis, said first pumping wheel being meshed with said third pumping wheel and said second pumping wheel being meshed with said fourth pumping wheel, and wherein each pumping wheel includes four lobes of projections, the projections of said first and second wheels being angularly offset from one another, and the projections of said third and fourth wheels being approximately equally angularly offset from one another.
A pump comprising a casing having an internal cavity that defines a pumping chamber;
- and inlet port for admitting a fluid in said pumping chamber;
- an outlet port for discharging the fluid from said pumping chamber;
- a pumping arrangement comprising a first and second pumping rotors mounted for rotation in said pumping chamber about spaced apart rotation axes, each pumping rotor including a first set of angularly spaced apart projections located in a first generally common plane and a second set of angularly spaced apart projections located in a second generally common plane, the projections of said first set being axially spaced apart with relation to the projections of said second set;
- the first set of projections on one of said rotors being meshed with the first set of projections of the other of said rotors and the second set of projections on one of said rotors being meshed with the second set of projections of the other of said rotors;
- wherein said projections are shaped as lobes substantially free of sharp edges, the projections of the first set and the projections of the second set on each rotor being approximately equally angularly offset with relation to one another such that during a complete revolution of each rotor a timing between said rotors is continuously maintained, and wherein each said rotor includes a pair of pumping wheels, one of the pumping wheels including said first set of projections and the other of said pumping wheels including said second set of projections, each pumping wheel including four lobes of projections.
Dependencies are inferred from the claim text.