Double-suction split case multi-disc pump

Abstract

An impeller pump has a housing having a suction chamber and a discharge chamber therein, a plurality of discs joined in spaced relationship and positioned within the housing, and a shaft extending through the housing and having an end adapted to be driven by motor so as to be rotated by the motor. The housing has a suction inlet that opens to the suction chamber and a discharge outlet that opens to the discharge chamber. The suction inlet has a pair of flow paths to the suction chamber. The plurality of discs includes a drive disc and a plurality of driven discs. The shaft is affixed to the drive disc such that the plurality of discs rotate within the housing.

Claims

1. An impeller pump comprising: a housing having a suction chamber and a discharge chamber therein, said housing having a suction inlet opening to the suction chamber and a discharge outlet opening to the discharge chamber, the suction inlet having a pair of flow paths to the suction chamber; a plurality of discs joined together in spaced relation, said plurality of discs having a drive disc and a plurality of driven discs, said plurality of discs being received within said housing; and a shaft extending through said housing and having an end adapted to be driven by motor so as to be rotated by the motor, said shaft being affixed to the drive disc such that said plurality of discs rotate within said housing, wherein an interior of said plurality of discs opens to the suction chamber and a periphery of said plurality of discs opens to the discharge chamber.

2. The impeller pump of claim 1, wherein the suction inlet has a diameter greater than a diameter of the discharge outlet.

3. The impeller pump of claim 1, wherein the suction inlet has a wall therein, the wall adapted to split a flow of a fluid into the pair of flow paths.

4. The impeller pump of claim 1, wherein said housing is split so as to have a pump seat and a pump cover, the plurality of discs being seated in the pump seat, the pump cover covering the plurality of discs.

5. The impeller pump of claim 1, wherein the plurality of discs are centered on said shaft, said shaft having bearings thereon interposed between said housing and said shaft.

6. The impeller pump of claim 1, wherein at least one of the plurality of discs is a chopper disc, the chopper disc having a plurality of cutting ribs extending across a surface of the chopper disc.

7. The impeller pump of claim 1, wherein at least one of said plurality of discs is a chopper disc, the chopper disc having a plurality of teeth formed at an outer periphery thereof.

8. The impeller pump of claim 1, wherein at least one of the plurality of discs is a chopper disc, the chopper disc having a plurality of cutting ribs extending across a surface of the chopper disc and a plurality of teeth formed at an outer periphery thereof.

9. An impeller pump comprising: a housing having a suction chamber and a discharge chamber therein, said housing having a suction inlet opening to the suction chamber and a discharge outlet opening to the discharge chamber, the suction inlet having a pair of flow paths to the suction chamber; a plurality of discs joined together in spaced relation, said plurality of discs having a drive disc and a plurality of driven discs, said plurality of discs being received within said housing; and a shaft extending through said housing and having an end adapted to be driven by motor so as to be rotated by the motor, said shaft being affixed to the drive disc such that said plurality of discs rotate within said housing, wherein the drive disc is positioned centrally in a sandwiched arrangement with the driven discs.

10. The impeller pump of claim 9, wherein the driven disc has a pair of internal discs on opposite sides of the drive disc and a pair of external discs on opposite sides of the pair of internal discs.

11. The impeller pump of claim 10, wherein each of the pair of internal discs has a winglet formed on a surface thereof, the winglet being affixed to a respective surface of each of the pair of external discs.

12. The impeller pump of claim 11, wherein the drive disc has a first winglet on one side thereof and a second winglet formed on an opposite side thereof, the first winglet being joined to one internal disc of the pair of internal discs, the second winglet being joined to another internal disc of the pair of internal discs.

13. The impeller pump of claim 10, wherein at least one of the pair of external discs and the pair of internal discs and the drive disc has a plurality of radial and angled ribs formed thereon or affixed thereto.

14. The impeller pump of claim 13, wherein each of the plurality of radial and angled ribs extends from an internal eye of the at least one of the plurality of discs to a periphery of the at least one of the plurality of discs.

15. An impeller pump comprising: a housing having a suction chamber and a discharge chamber therein, said housing having a suction inlet opening to the suction chamber and a discharge outlet opening to the discharge chamber, the suction inlet having a pair of flow paths to the suction chamber; a plurality of discs joined together in spaced relation, said plurality of discs having a drive disc and a plurality of driven discs, said plurality of discs being received within said housing; and a shaft extending through said housing and having an end adapted to be driven by motor so as to be rotated by the motor, said shaft being affixed to the drive disc such that said plurality of discs rotate within said housing, wherein said plurality of discs comprises a center driver disc and multiple driven discs having varied outside diameters and inside diameters adapted to required efficiency and loading conditions.

16. An impeller pump comprising: a housing having a suction chamber and a discharge chamber therein, the housing having a suction inlet opening to the suction chamber and a discharge outlet opening to the discharge chamber; a plurality of discs joined together in spaced relationship, said plurality of discs having a drive disc and a plurality of driven discs, the drive disc being positioned centrally in a sandwiched arrangement with the plurality of driven discs, the driven disc has a pair of internal discs on opposite sides of the drive disc and a pair of external discs on opposite sides of the pair of internal discs; and a shaft extending through said housing, said housing having an end adapted to be driven by motor so as to be rotated by the motor, said shaft being affixed to the drive disc such that said plurality of discs rotate within said housing.

17. The impeller pump of claim 16, wherein each of the pair of internal discs has an internal eye of a greater diameter than a diameter of an internal eye of each of the pair of external discs.

18. The impeller pump of claim 16, wherein each of the pair of internal discs has a winglet formed on a surface thereof, the winglet being affixed to a respective surface of each of the pair of external discs, the drive disc having a first winglet on one side thereof and a second winglet formed on opposite side thereof, the first winglet being joined to one internal disc of the pair of internal discs, the second winglet being joined to another internal disc of the pair of internal discs.

19. The impeller pump of claim 16, wherein at least one of the pair of external discs and the pair of internal discs and the drive disc has a plurality of radial and angled ribs formed thereon or affixed thereto, wherein each of the plurality of radial and angled ribs extends from an internal eye of the at least one of the plurality of discs to a periphery of the at least one of the plurality of discs.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a cross-sectional view showing the disc pump of the prior art.

(2) FIG. 2 is a cross-sectional view taken across lines 2-2 of FIG. 1 of the disc pump of the prior art.

(3) FIG. 3 is an upper perspective view of the impeller is used in the disc pump of the prior art.

(4) FIG. 4 is an upper perspective view of the double-suction split case multi-disc pump of the present invention with the pump cover removed.

(5) FIG. 5 is an upper perspective view showing the suction inlet of the double-section split case multi-disc pump of the present invention and, in particular, showing the pair of flow paths.

(6) FIG. 6 is an upper perspective view of the double-section split case multi-disc pump of the present invention with the top cover removed and showing, in particular, the configuration of the plurality of discs.

(7) FIG. 7 is a diagrammatic view showing the flow of fluid through the double-suction split case multi-disc pump of the present invention.

(8) FIG. 8 is an upper perspective view of the plurality of discs as used in the double-suction split case multi-disc pump of the present invention and, in particular, showing the configuration of winglets and ribs on the surface of the discs.

(9) FIG. 9 is an upper perspective end view showing the internal eyes of the external discs in relation to the internal discs of the plurality of discs of the double-suction split case multi-disc pump of the present invention.

(10) FIG. 10 is an upper perspective view of the plurality of discs as mounted on the shaft.

(11) FIG. 11 is an upper perspective view showing a chopper as used among the discs of the plurality of discs of the double-section split case multi-disc pump of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

(12) Referring to FIG. 4, there is shown the double-suction split case multi-disc pump 50 of the present invention. In particular, FIG. 4 shows a housing 52 having a suction chamber 54 and a discharge chamber 56 therein. The housing 52 has a suction inlet 58 opening to the suction chamber 54 and a discharge outlet 60 that opens to the discharge chamber 56. The suction inlet 58 will have a pair of flow paths to the suction chamber 54 (to be described hereinafter). A plurality of discs 62 are joined together in spaced relationship. The plurality of discs 62 includes a drive disc 64 and a plurality of driven discs 66 and 68. A shaft 70 extends through the housing 52 and has an end 72 adapted to be driven by a motor so as to be rotated by the motor. The shaft 70 is affixed to the drive disc 64 such that the plurality of discs 62 rotate within the housing 52.

(13) In FIG. 4, can be seen that the housing 52 includes a pump seat 74 and a pump cover surface 76. This contributes to the split case configuration of the present invention. Bearings 78 and 80 are positioned on the pump seat 74 so as to be interposed between the shaft 70 and the housing 52. The bearings 78 and 80 support the shaft 70 within the housing 52.

(14) The plurality of discs 62 form a rotary assembly that is positioned over the pump seat 74. As can be seen, the drive disc 64 of the plurality of discs 62 is centered between the driven discs 64 and 68. The drive disc 64 can be connected to the driven discs 68 by winglets 76 and 78. As such, as the shaft 70 rotates the drive disc 64, the driven discs 66 and 68 will correspondingly rotate. This will cause the fluid to pass from the suction inlet 58 to the discharge outlet 60.

(15) FIG. 5 illustrates the configuration of the suction inlet 58. A wall 80 is formed in the suction inlet 58 so as to split the fluid flow into a pair of flows 82 and 84. This pair of flows will cause the fluid entering the suction inlet 80 to passed to the suction chamber 54 (to be described hereinafter). FIG. 5 further shows that the shaft 70 has an end 72 adapted to be driven by a motor so that the plurality of discs 62 can be driven in rotation. The pump cover 76 is affixed to the pump seat 74 so as to enclose the plurality of discs 62 within the double-suction split case multi-disc pump 50 of the present invention. Within the concept of the present invention, the double-suction split case multi-disc pump can have a horizontal configuration or a vertical configuration. Each of the plurality of discs 62 can be specifically configured for the type of fluid that is to be conveyed through the interior of the pump 50.

(16) FIG. 6 illustrates an internal view of the double-suction split case multi-disc pump 50 of the present invention. The suction inlet 58 is illustrated as directing a fluid toward the suction chamber 54. The discharge outlet 60 is illustrated as communicating with the discharge chamber 56. Ultimately, the fluid in the suction chamber 54 will be directed toward the interior 86 of the plurality of discs 62. As such, the fluid will pass through the spaces between the plurality of disc 62 so as to be ultimately impelled into the discharge chamber 56 and outwardly through the discharge outlet 60.

(17) FIG. 6 shows, in particular, that the plurality of discs 62 includes a center disc 64, a pair of external discs 88 and a pair of internal discs 90 arranged in a sandwiched configuration. The plurality of discs 62 are arranged in spaced parallel planar relationship. The rotation of the plurality of discs 62 by the shaft 70 can cause the fluid to flow from the suction chamber 54 to the spaces between the plurality of discs 62 and outwardly through the discharge chamber 56 and the discharge outlet 60.

(18) FIG. 7 shows, in particular, the flow of fluid through the double-suction split case multi-disc pump 50 of the present invention. Arrow 92 illustrates an initial flow of fluid. This fluid can be in the nature of a slurry, fine solids, high-viscosity fluids and fluids with entrained air. This fluid will enter the suction inlet 58 and be divided into two flow paths 94 and 96 in the suction inlet 58. Wall 80 will divide the flow 92 into the two flow paths 94 and 96. The two flow paths 94 and 96 will then move into the suction chambers 54 so as to be delivered into the interior of the plurality of discs 62. The rotation of the plurality of discs 62 by the rotation of the shaft 70 will impel the fluids through the spaces between the plurality of discs 62 and outwardly through the discharge chamber 56 and the discharge outlet 60 (as illustrated by arrow 98).

(19) FIG. 8 is an isolated view showing the plurality of discs 62 as used in the double-suction split case multi-disc pump 50 of the present invention. For illustration purposes, one of the external discs 88 has been removed. As such, FIG. 8 shows one internal disc 100, the drive disc 102, another internal disc 104 and an external disc 106 arranged in a sandwiched configuration.

(20) The surface of the internal disc 100 has a winglet 108 formed thereon or affixed thereto. Winglet 108 is has a generally arcuate configuration extending from the internal eye 110 of the internal disc 100. These winglets 108 can be affixed to an internal surface of an external disc. The drive disc 102 can have a first winglet on one side thereof and a second winglet formed on an opposite side thereof. Each of these winglets will have a configuration similar to that of winglet 108. The first winglet is joined to an opposite side from surface 108 of the internal disc 100. The second winglet is joined to the surface of the other internal disc 104. A similar arrangement of winglets 108 can also be applied so as to secure the external disc 106 to the internal disc 104.

(21) The internal disc 100 has a plurality of radial and angled ribs 112 formed or affixed to surface 108. Each of those plurality of radial and angled ribs 112 extends from the internal eye 110 to a periphery 114 of the internal disc 100. A similar arrangement of such radial and angled ribs can also be applied to the respective surfaces of the drive disc 102, the other internal disc 104 and the interior surface of the external disc 106. The winglet 108 is illustrated as located between adjacent pairs of the plurality of radial and angled ribs 112.

(22) FIG. 9 illustrates a further configuration of the plurality of disc 62. In this configuration, there is an external disc 116 that is affixed to the winglets 108 of the internal disc 100. The internal disc 100 is affixed to the drive disc 102. Drive disc 102 is affixed to the other internal disc 104. Ultimately, the internal disc 104 is affixed to the external disc 106 so as to complete the rotating assembly of the plurality of discs 62.

(23) FIG. 9 shows, in particular, that the internal eye 118 of the internal disc 100 has a greater diameter than the internal eye 120 of the external disc 116. A similar arrangement exists between the internal eyes of the internal disc 100 and the external disc 106.

(24) FIG. 10 shows that the plurality of discs 62 are mounted to the shaft 70. The drive disc 102 will be directly affixed to the outer periphery of the shaft 70. The internal discs 100 and 104 are affixed to the drive disc 102 by the winglets 108 (as described herein previously). The internal discs 100 and 104 will be affixed to the respective external discs 106 and 116 by the respective winglets 108. As such, the rotation of the shaft 70 will cause a corresponding rotation of the plurality of discs 62.

(25) FIG. 11 shows an alternative embodiment of the present invention wherein at least one of the plurality of discs 62 is a chopper disc 120. As illustrated in FIG. 11, chopper disc 120 includes a first chopper disc 122 and a second chopper disc 124. These can be configured as either the internal discs or the external discs. Alternatively, each of the discs used in the plurality of discs 62 can be in the nature of the chopper discs 122 and 124.

(26) The chopper disc 120 has a plurality of cutting ribs 126 extending across a surface of the chopper disc 124. This plurality of cutting ribs 126 will have a sharp edge which serves to macerate any fluids passing through the spaces between the respective discs 122 and 124. Each of the cutting ribs 126 will extend from the internal eye 128 to the outer periphery 130 of the chopper discs 122 and 124.

(27) The chopper discs 122 and 124 are also illustrated as having a plurality of teeth 132 formed at the outer periphery 130 of each of the chopper discs 122 and 124. Once again, these teeth 132 can be sharp so as to further macerate any fluids passing through the impeller pump of the present invention.

(28) As shown herein, FIG. 4 is a complete overview of the double-suction horizontal split case multi-disc pump of the present invention having a bottom casting identified as the seat and a top casting identified as the cover in which these are assembled together. The rotating assembly is installed. The shaft extends outwardly of the cover in order to be supported by the bearing seating area. The suction is the largest flange on the right. The discharge is the smaller flange on the left. FIG. 5 shows that the suction flange has an internal wall with a pair of suction chambers. This pair of suction chambers is on each side of the plurality of discs. FIG. 6 shows a cutaway view of the double-suction horizontal split case multi-disc pump resting on the seat or bottom casting. A five disc rotating assembly rests and is centered on the suction side of the pump between the pair of suction chambers. The center disc, which connects to the shaft, is in the middle of the plurality of discs. There is a pair of internal discs and a pair of external discs. The pair of suction chambers, the suction flange and the discharge flange are also illustrated. FIG. 7 shows a transparent top view of the flow path through the pump showing the suction with its suction chambers and discharge.

(29) FIG. 8 shows a hybrid disc set without the closest external disc attached and without the shaft. This is a hybrid disc because it contains radial ribs and also angled ribs that are seamlessly blended together. The radial ribs generate more pressure. The bend-angled ribs generate more flow via a slinging effect. This is customary of a typical centrifugal impeller. The bending allows for more surface area to generate more force. Also shown in FIG. 8 are the winglets. These are small arcuate vanes that act as posts that connect the discs together. FIG. 8 shows a pair of internal disc, and external disc and drive disc mounted centrally of the internal discs and the external discs.

(30) FIG. 9 shows a complete five disc assembly. The discs are assembled in the order of: (1) external disc, (2) internal disc, (3) center or driven disc, (4) internal disc, and (5) external disc. The eyes of the internal discs are larger than the eyes of the external discs. This promotes an even loading of the disc of the plurality of disc. This same logic and arrangement can be used for a seven disc-set. The only difference is the number of internal discs. In a seven disc-set arrangement, there would be four internal discs. In a nine disc arrangement there would be six internal discs. FIG. 10 shows a five disc arrangement on a shaft. FIG. 11 shows the chopper disc set which contain sharpened ribs and external diameters for macerating solids and for passing sewage.

(31) The foregoing disclosure and description of the invention is illustrative and explanatory thereof. Various changes in the details of the illustrated construction can be made is the scope of the present invention without departing from the true spirit of the invention. The present invention should only be limited by the following claims and their legal equivalents.