Sealing device for an immersible pump

Patent metadata

Field	Value
Publication number	US-9745993-B2
Application number	US-201113159161-A
Country	US
Kind code	B2
Filing date	Jun 13, 2011
Priority date	Jun 13, 2011
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

Disclosed herein is an apparatus for an immersible pump. The apparatus can include a shaft for communicating with a motor. The shaft includes a first region having a first diameter, a second region having a second diameter that is less than the first diameter, and a tapering region between the two regions. A sleeve can be provided to receive the shaft. A sealing device includes a receiving area in which the tapering region is at least partially positionable to form a seal, and an abutment that is configured to form a seal with the sleeve and that is responsive to a force directed from the sleeve to enhance the seal with the tapering region. In some embodiments, the sealing device is provided with a circumferential outer wall for centering the sleeve about the shaft and/or for aligning the force with the abutment.

First claim

What is claimed is:

1. Apparatus for an immersible pump, comprising:
a shaft for communication with a motor, extending along an axis, and including a first region having a first diameter, a second region having a second diameter less than the first diameter, and a tapering region therebetween having a sloped surface relative to the axis;
a sleeve having a bore extending through both ends configured to receive said shaft through said both ends; and
a sealing device at least partially positioned between the shaft and the sleeve including: (a) a receiving area, including an inner surface angled relative to the axis, and having said sloped surface of said tapering region of said shaft positionable at least partially within said inner surface to form a seal between said sloped surface and said inner surface, and (b) an abutment configured to form a seal with said sleeve and responsive to a force directed from said sleeve to enhance said seal between said sloped surface and said inner surface.

2. The apparatus of claim 1 , wherein said sealing device comprises a circumferential outer wall positionable proximal said sleeve.

3. The apparatus of claim 2 , wherein said sealing device comprises an annular ring positioned between said receiving area and said circumferential outer wall and having a radially-extending shoulder that forms said abutment.

4. The apparatus of claim 3 , wherein said circumferential outer wall is positionable between said second region and said sleeve.

5. The apparatus of claim 4 , wherein said circumferential outer wall is positionable with a gap between said circumferential outer wall and said sleeve so as to direct a load on said sealing device from the force to said shoulder.

6. The apparatus of claim 4 , wherein said circumferential outer wall is configured to center said sleeve about said shaft.

7. The apparatus of claim 4 , wherein said circumferential outer wall is configured to align the force with said shoulder.

8. The apparatus of claim 1 , wherein said shaft has a first end positionable proximal said sealing device in use and a second end opposite thereto, and wherein said sleeve has a first end positionable proximal said sealing device in use and a second end opposite thereto.

9. The apparatus of claim 8 , comprising an impeller.

10. The apparatus of claim 9 , wherein said impeller is securable to said second end of said shaft against said second end of said sleeve.

11. The apparatus of claim 9 , wherein said impeller is securable to said second end of said shaft so as to force said second end of said sleeve in a direction toward said abutment.

12. The apparatus of claim 9 , wherein said impeller is threadably engagable with said second end of said shaft so as to force said sleeve in a direction toward said abutment.

13. The apparatus of claim 1 , comprising the motor.

14. The apparatus of claim 1 provided as a kit.

15. The apparatus of claim 1 , wherein the inner surface is complementary to the sloped surface.

16. The apparatus of claim 1 , wherein an angle of the sloped surface relative to the axis is different than an angle of the inner surface relative to the axis.

17. The apparatus of claim 1 , wherein at least one of the sloped surface and the inner surface are at an angle with respect to the axis in a range of fifteen to twenty-five degrees.

18. The apparatus of claim 17 , wherein the angle is fifteen degrees.

19. The apparatus of claim 1 , wherein an angle of the sloped surface relative to the axis is greater than an angle of the inner surface relative to the axis to force greater outward deflection of the inner surface.

20. The apparatus of claim 1 , wherein an angle of the sloped surface relative to the axis is twenty-five degrees and an angle of the inner surface relative to the axis is twenty degrees.

21. A method of assembling an immersible pump:
providing a shaft extending along an axis and including a first region having a first diameter, a second region having a second diameter less than the first diameter, and a tapering region therebetween having a sloped surface relative to the axis;
providing a sleeve with a first open end and a second open end opposite the first end;
providing a sealing device including (a) a receiving area having an inner surface angled with respect to the axis and configured to have the sloped surface of the tapering region of said shaft at least partially positioned therein and (b) an abutment;
inserting the shaft into the receiving area of the sealing device;
inserting the shaft through the first and second open ends of the sleeve; and
causing the first end of the sleeve to direct a force toward the abutment so as to (a) seal the inner surface of the receiving area with the sloped surface of the tapering region of said shaft at least partially positioned within the sealing device and (b) at least partially seal the sleeve such that the sealing device is at least partially between the shaft and the sleeve.

22. The method of claim 21 , wherein causing the first open end of the sleeve to direct the force toward the abutment, comprises forcing the second open end of the sleeve in a direction toward the abutment.

23. The method of claim 22 , wherein forcing the second open end of the sleeve in the direction toward the abutment, comprises forcing the second open end of the sleeve in the direction toward the abutment by attaching an impeller to the shaft.

24. The method of claim 23 , wherein attaching an impeller to the shaft, comprises threading the impeller to an end of the shaft proximal the second open end of the sleeve.

25. The method of claim 21 , wherein providing the sealing device including the receiving area and the abutment, comprises providing the sealing device to include the receiving area, the abutment, and a circumferential outer wall.

26. The method of claim 25 , comprising inserting the shaft into the circumferential outer wall.

27. The method of claim 26 , comprising positioning the circumferential outer wall between the shaft and the sleeve to center the sleeve about the shaft.

28. The method of claim 26 , comprising positioning the circumferential outer wall between the shaft and the sleeve to align the force with the abutment.

29. The method of claim 21 , wherein the inner surface is complementary to the sloped surface.

30. The method of claim 21 , wherein an angle of the sloped surface relative to the axis is different than an angle of the inner surface relative to the axis.

31. The method of claim 21 , wherein at least one of the sloped surface and the inner surface are at an angle with respect to the axis in a range of fifteen to twenty-five degrees.

32. The method of claim 21 , wherein the angle is fifteen degrees.

33. The method of claim 21 , wherein an angle of the sloped surface relative to the axis is greater than an angle of the inner surface relative to the axis to force greater outward deflection of the inner surface.

34. The Method of claim 21 , wherein an angle of the sloped surface relative to the axis is twenty-five degrees and an angle of the inner surface relative to the axis is twenty degrees.

35. Apparatus for an immersible pump comprising:
a shaft for communication with a motor and including a first region having

Assignees

• Stone Jon Terence
• Moren Gary A
• Hayward Ind Inc

Inventors

• Stone Jon Terence
• Moren Gary A

Classifications

• Y10T29/49243

  Centrifugal type · CPC title

• F04D29/106 Primary

  especially adapted for liquid pumps · CPC title

• F04D13/08

  for submerged use · CPC title

• F04D29/043

  Shafts · CPC title