Pump with co-axial magnetic coupling
First Claim
Patent Images
1. A pump having a magnetic coupling, said pump comprising:
- a motor means;
a tubular pump casing that has an interior area that houses a rotatable impeller and wherein said interior area is in the form of a cylinder having a uniform diameter;
a rotatable housing surrounding at least a portion of said pump casing and operatively connected to said motor means;
a plurality of first magnets located about an interior surface of said housing and rotatable therewith;
a plurality of second magnets operatively connected to and rotatable with the impeller, wherein said second magnets are aligned with and magnetically coupled to said first magnets;
bearing means located within said pump casing and functioning to support said impeller within said pump casing; and
seal means located within said pump casing, said seal means functioning to isolate the second magnets from any fluid being pumped by said pump.
0 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a pump that employs a magnetic coupling to connect the motor to the impeller. A simplified structure within the pump casing is employed to enable the easy removal of the pump'"'"'s impeller and bushings and/or bearings. In one embodiment of the invention, the exterior surface of the impeller, including its attached magnets, is encased in a plastic bushing material. Surrounding the impeller is a tubular bushing that may at times come into contact with the bushing material of the impeller.
-
Citations
14 Claims
-
1. A pump having a magnetic coupling, said pump comprising:
-
a motor means; a tubular pump casing that has an interior area that houses a rotatable impeller and wherein said interior area is in the form of a cylinder having a uniform diameter; a rotatable housing surrounding at least a portion of said pump casing and operatively connected to said motor means; a plurality of first magnets located about an interior surface of said housing and rotatable therewith; a plurality of second magnets operatively connected to and rotatable with the impeller, wherein said second magnets are aligned with and magnetically coupled to said first magnets; bearing means located within said pump casing and functioning to support said impeller within said pump casing; and seal means located within said pump casing, said seal means functioning to isolate the second magnets from any fluid being pumped by said pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A pump having a magnetic coupling, said pump comprising:
-
a motor means; an elongated pump casing that has an interior area that houses an elongated rotatable impeller; a rotatable housing surrounding at least a portion of said pump casing and operatively connected to said motor means; a plurality of first magnets located about an interior surface of said housing and rotatable therewith; a plurality of second magnets operatively connected to and rotatable with the impeller, wherein said second magnets are aligned with and magnetically coupled to said first magnets; a first bushing that forms an exterior surface of a body portion of said impeller and wherein said second magnets are embedded in said first bushing; a second bushing that is tubular in shape and surrounds said first bushing; and third and fourth bushings, wherein said third bushing is located adjacent a first end of said impeller and said fourth bushing is located adjacent to a second end of said impeller. - View Dependent Claims (12)
-
-
13. A pump having a magnetic coupling, said pump comprising:
-
a motor means; an elongated pump casing that has an interior area that houses a rotatable impeller, and wherein said pump casing is in the form of a straight tube having first and second ends; a connection means located at each of said first and second ends of said casing; a first opening located at the first end of said casing; a second opening located at the second end of said casing; a rotatable housing surrounding at least a portion of said pump casing and operatively connected to said motor means; a plurality of first magnets located about an interior surface of said housing and rotatable therewith; a plurality of second magnets operatively connected to and rotatable with the impeller, wherein said second magnets are aligned with and magnetically coupled to said first magnets; bearing means located within said pump casing and functioning to support said impeller within said pump casing; and wherein said first and second openings are substantially equal in diameter and are larger in diameter than the impeller and bearing means. - View Dependent Claims (14)
-
Specification