Bonded seat with annular ribs

Patent metadata

Field	Value
Publication number	US-10794494-B2
Application number	US-201815949194-A
Country	US
Kind code	B2
Filing date	Apr 10, 2018
Priority date	Apr 10, 2018
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

A bonded seat for a butterfly valve can comprise a first axial end and a second axial end distal from the first axial end; a central section between the first axial end and the second axial end, the central section defining a radially inward surface and a radially outward surface, the radially inward surface defining a fluid bore therethrough from the first axial end to the second axial end, the radially outward surface defining a plurality of annular ribs.

First claim

The invention claimed is:

1. A bonded seat for a butterfly valve comprising:
a first axial end and a second axial end distal from the first axial end; and
a central section between the first axial end and the second axial end, the central section defining a radially inward surface and a radially outward surface, the radially inward surface defining a fluid bore therethrough from the first axial end to the second axial end, the radially outward surface defining a first plurality of annular ribs, the radially inward surface defining a bearing surface, the bearing surface being generally flat and defining a perimeter, a stem bore defined extending through the central section from the radially inward surface to the radially outward surface, the bearing surface defining a second plurality of annular ribs surrounding the stem bore, each annular rib of the second plurality of annular ribs being spaced inwards from the perimeter towards the stem bore.

2. The bonded seat of claim 1 , wherein the radially outward surface defines a first cylindrical portion and a second cylindrical portion, the first cylindrical portion between the first plurality of annular ribs and the first axial end, and the second cylindrical portion between the first plurality of annular ribs and the second axial end.

3. The bonded seat of claim 1 , further comprising a first flange defined at the first axial end and a second flange defined at the second axial end.

4. The bonded seat of claim 1 , wherein the radially inward surface is cylindrical.

5. The bonded seat of claim 1 , wherein the first plurality of annular ribs comprises at least five annular ribs.

6. The bonded seat of claim 1 , wherein at least one of the first plurality of annular ribs extends completely around the central section.

7. The bonded seat of claim 1 , wherein the first plurality of annular ribs define V-shaped cross-sections.

8. The bonded seat of claim 1 , wherein the first plurality of annular ribs define arcuate cross-sections.

9. The bonded seat of claim 1 , wherein the bonded seat comprises a rubber, and wherein the bearing surface and the second plurality of annular ribs are formed from the rubber.

10. The bonded seat of claim 1 , wherein the second plurality of annular ribs comprises at least three annular ribs.

11. The bonded seat of claim 1 , wherein at least one of the first plurality of annular ribs intersects the stem bore.

12. The bonded seat of claim 11 , wherein at least one of the first plurality of annular ribs is defined between the stem bore and the first axial end, and at least one other of the first plurality of annular ribs is defined between the stem bore and the second axial end.

13. A bonded seat valve comprising:
a valve body comprising a first axial end, a second axial end, and a central section, the first axial end distal from the second axial end, the central section between the first axial end and the second axial end, the central section defining a radially inward surface and a radially outward surface, the radially inward surface defining a seat bore therethrough from the first axial end to the second axial end, the radially inward surface defining a plurality of annular grooves;
a seat positioned in the seat bore and bonded to the radially inward surface of the central section of the valve body, the seat comprising a rubber, the seat comprising a first axial end, a second axial end, and a central section, the first axial end distal from the second axial end, the central section between the first axial end and the second axial end, the central section defining a radially inward surface and a radially outward surface, the radially inward surface defining a fluid bore therethrough from the first axial end to the second axial end, the radially outward surface defining a first plurality of annular ribs extending into the plurality of annular grooves, the radially inward surface defining a bearing surface, a stem bore defined extending through the central section of the seat from the radially inward surface to the radially outward surface, the bearing surface defining a second plurality of annular ribs surrounding the stem bore, the bearing surface and the second plurality of annular ribs being formed from the rubber; and
a valve disc positioned in the fluid bore of the seat and configured to move about and between a closed position and an open position, wherein the valve disc in the closed position blocks a flow path from the first axial end of the seat to the second axial end of the seat, and wherein the valve disc in the open position opens the flow path from the first axial end of the seat to the second axial end of the seat; and
wherein the radially outward surface of the seat is bonded to the radially inward surface of the valve body.

14. The bonded seat valve of claim 13 , wherein the first plurality of annular ribs comprises at least five annular ribs and the plurality of annular grooves comprises at least five annular grooves.

15. The bonded seat valve of claim 13 , wherein:
the seat defines a first flange at the first axial end of the seat and a second flange at the second axial end of the seat;
the valve body defines a first flange cutout at the first axial end of the valve body and a second flange cutout at the second axial end of the valve body; and
the first flange is positioned in the first flange cutout and the second flange is positioned in the second flange cutout.

16. The bonded seat valve of claim 13 , wherein the valve body comprises cast iron.

17. The bonded seat valve of claim 13 , further comprising a stem attached to the valve disc, wherein the valve body defines a stem bore that is aligned with the stem bore defined by the seat, wherein the stem extends through the stem bore defined through each of the valve body and the seat, and wherein at least one of the first plurality of annular ribs intersects the stem bore of the seat and at least one of the plurality of annular grooves intersects the stem bore of the valve body.

18. The bonded seat valve of claim 17 , wherein the valve disc and the stem are configured to rotate together about and between the closed position and the open position, and wherein the valve disc is configured to compress the seat into at least one of the plurality of annular grooves when the valve disc rotates from the open position to the closed position.

19. A method of manufacturing a bonded seat valve, the method comprising:
forming a valve body comprising a first axial end, a second axial end, and a central section, the first axial end distal from the second axial end, the central section between the first axial end and the second axial end, the central section defining a radially inward surface and a radially outward surface, the radially inward surface defining a seat bore therethrough from the first axial end to the second axial end, the radially inward surface defining a plurality of annular grooves;
molding a seat over the radially inward surface in the seat bore of the valve body, the seat comprising a first axial end, a second axial end, and a central section, the first axial end distal from the second axial end, the central section between the first axial end and the second axial end, the central section defining a radially inward surface and a radially outward surface, the radially inward surface defining a fluid bore therethrough from the first axial end to the second axial end, the radially outward surface defining a first plurality of annular ribs extending into the plurality of annular grooves, the radially inward s

Assignees

• Mueller Int Llc

Inventors

• Abouelleil Ashraf
• Feng Xianhua

Classifications

• B23P15/001 Primary

  valves or valve housings (welding B23K; valve housings per se F16K) · CPC title

• F16K1/2268

  Sealing means for the axis of rotation · CPC title

• F16K1/2263 Primary

  the sealing being arranged on the valve seat · CPC title

• F16K1/228

  Movable sealing bodies · CPC title

• F16K1/224

  Details of bearings for the axis of rotation · CPC title