Bonded seat valve

Patent metadata

Field	Value
Publication number	US-11686394-B2
Application number	US-202117266913-A
Country	US
Kind code	B2
Filing date	Jan 28, 2021
Priority date	Jan 28, 2021
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A valve seat includes a first end; a second end positioned opposite from the first end; and a body extending from the first end to the second end, the body defining an inner surface and an outer surface, the inner surface defining a main bore extending through the body from the first end to the second end, the main bore defining a main bore axis, the body defining a shaft bore extending from the inner surface to the outer surface, the shaft bore defining a shaft bore axis positioned perpendicular to the main bore axis, the shaft bore defining an inner shaft opening and an outer shaft opening, the body defining a concave seat bearing surface extending around the inner shaft opening.

First claim

That which is claimed is:

1. A valve seat comprising:
a first end;
a second end positioned opposite from the first end; and
a body extending from the first end to the second end, the body defining an inner surface and an outer surface, the inner surface defining a main bore extending through the body from the first end to the second end, the main bore defining a main bore axis, the body defining a shaft bore extending from the inner surface to the outer surface, the shaft bore defining a shaft bore axis positioned perpendicular to the main bore axis, the shaft bore defining an inner shaft opening and an outer shaft opening, the body defining a concave seat bearing surface extending around the inner shaft opening, the body defining a sealing portion centered between the first end and the second end, the sealing portion positioned between a first bore portion and a second bore portion, the first bore portion and the second bore portion of the sealing portion extending radially outward from the outer surface of the body, the body further defining a circumferential sealing rib extending circumferentially around the body, the circumferential sealing rib extending radially outward from the first bore portion and the second bore portion of the sealing portion, and a boss circumscribing the shaft bore and extending radially outward beyond a radial height of the circumferential sealing rib.

2. The valve seat of claim 1 , wherein the circumferential sealing rib defines an arcuate cross-sectional shape.

3. The valve seat of claim 1 , wherein the circumferential sealing rib defines a V-shaped cross-sectional shape.

4. The valve seat of claim 1 , wherein the circumferential sealing rib defines a U-shaped cross-sectional shape.

5. The valve seat of claim 1 , wherein the circumferential sealing rib is axially centered between the first end and the second end relative to the main bore axis.

6. The valve seat of claim 1 , wherein the concave seat bearing surface is a spherical zone.

7. The valve seat of claim 1 , wherein the concave seat bearing surface defines a frustoconical surface.

8. The valve seat of claim 1 , wherein at least one annular rib is defined by the body within the shaft bore.

9. A valve comprising:
a valve seat defining an inner seat surface and an outer seat surface defining a cylindrical portion extending from a first transition shoulder to a second transition shoulder, a shaft bore extending through the valve seat from the inner seat surface to the outer seat surface, an inner shaft opening of the shaft bore defined at the inner seat surface, the inner seat surface defining a main bore extending from a first end of the valve seat to a second end of the valve seat, the main bore defining a bore axis, the inner seat surface defining a concave seat bearing surface extending around the inner shaft opening, the valve seat further defining a circumferential sealing rib extending circumferentially around and radially outward from cylindrical portion, and a boss circumscribing the shaft bore and extending radially outward beyond a radial height of the circumferential sealing rib; and
a valve member defining an end engaging the concave seat bearing surface, the end defining a valve member end surface, the valve member end surface defining a convex shape, the valve member defining an edge, the edge positioned in contact with the inner seat surface when the valve member is in a closed position, an axial width of the edge being less than an axial width of the circumferential sealing rib.

10. The valve of claim 9 , further comprising a shaft extending through the shaft bore, the end receiving the shaft, and the valve member being rotationally fixed to the shaft.

11. The valve of claim 9 , further comprising a valve body defining an inner body surface, the valve seat bonded to the inner body surface, the inner body surface defining a boss recess, the boss recess receiving a reinforced boss of the valve seat, the reinforced boss defining a sidewall thickness between an outer circumferential surface of the reinforced boss and a shaft bore surface of the shaft bore, the reinforced boss defining an outer shaft opening of the shaft bore, the reinforced boss defining a height between the outer shaft opening and a portion of the outer seat surface surrounding the reinforced boss, a ratio of the height divided by the sidewall thickness defining a value between 0.5 and 2.

12. The valve of claim 9 , wherein the valve member is a disc, and wherein the valve is a butterfly valve.

13. The valve of claim 9 , wherein the circumferential sealing rib defines an arcuate cross-sectional shape.

14. The valve of claim 9 , wherein the circumferential sealing rib defines a U-shaped cross-sectional shape.

15. The valve of claim 9 , wherein the circumferential sealing rib defines a V-shaped cross-sectional shape.

16. The valve of claim 9 , wherein the concave seat bearing surface is a spherical zone.

17. The valve of claim 9 , wherein the concave seat bearing surface defines a frustoconical surface.

18. The valve of claim 9 , wherein
the valve member contacts and seals with a portion of the inner seat surface positioned opposite from the circumferential sealing rib when the valve member is in the closed position.

19. The valve of claim 18 , further comprising a valve body defining an inner body surface, the inner body surface bonded to the valve seat, the inner body surface defining a circumferential sealing groove shaped complimentary to the circumferential sealing rib, the circumferential sealing rib compressed between the circumferential sealing groove and the valve member in a three-dimensional stress state when the valve member is in the closed position.

Assignees

• Mueller Int Llc

Inventors

• Feng Xianhua

Classifications

• F16K1/2268

  Sealing means for the axis of rotation · CPC title

• F16K1/42 Primary

  Valve seats (for double-seat valves F16K1/44) · CPC title

• F16K1/2057

  the sealing being arranged on the valve seat · CPC title

• F16K1/36

  Valve members (for double-seat valves F16K1/44 {; for butterfly valves F16K1/222, F16K1/223}) · CPC title

• F16K1/465

  to the valve seats · CPC title