Diaphragm assembly

Patent metadata

Field	Value
Publication number	US-11614178-B2
Application number	US-201917431801-A
Country	US
Kind code	B2
Filing date	Feb 20, 2019
Priority date	Feb 20, 2019
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

Technologies are described for a diaphragm. The diaphragm may comprise a structure. The structure may be a disc shape with a top and bottom side. The top and bottom sides may be circular in outline. The diaphragm may comprise a diaphragm stud at a center point on the top side. The diaphragm stud may be configured to couple with a connector of a bonnet assembly. The diaphragm may comprise a diaphragm bead on the bottom side. The diaphragm bead may be along a first axis. The diaphragm may comprise at least one tab which may extend radially from the structure along at an outer edge of the structure. The at least one tab may engage with a bonnet notch of a bonnet assembly to align the diaphragm to the bonnet assembly.

First claim

What is claimed is:

1. A diaphragm for a diaphragm valve, the diaphragm comprising:
a structure, wherein the structure is a disc shape with a top side and a bottom side;
a diaphragm stud at a center point on the top side of the structure, wherein the diaphragm stud is configured to couple with a connector of a bonnet assembly;
first tabs, wherein the first tabs extend radially from the structure along a first axis of the structure at outer edges of the structure; and
second tabs, wherein the second tabs extend radially from the structure along a second axis of the structure at outer edges of the structure, the second axis being perpendicular to the first axis, the first tabs and the second tabs engage with bonnet notches of the bonnet assembly to align the diaphragm to the bonnet assembly when the diaphragm is attached to the bonnet assembly and first tabs have a different width than the second tabs.

2. The diaphragm of claim 1 , wherein the structure of the diaphragm is comprised of polytetrafluoroethylene (PTFE).

3. The diaphragm of claim 1 , further comprising a diaphragm bead on the bottom side of the structure, wherein the diaphragm bead is along the first axis of the structure; and
wherein the first tabs extend out radially from the bonnet notches and indicate an alignment of the diaphragm and the diaphragm bead relative to the bonnet assembly.

4. The diaphragm of claim 1 , wherein the second tabs include a tab connector and a tab end, and wherein the tab end is connected to a first side of the tab connector and the structure is connected to a second side of the tab connector.

5. The diaphragm of claim 1 , wherein a backing cushion is secured between the diaphragm and the bonnet assembly when the diaphragm is attached to the bonnet assembly.

6. The diaphragm of claim 5 , wherein the backing cushion has a disc shape.

7. The diaphragm of claim 1 , wherein the first tabs include a tab connector and a tab end, and wherein the tab end is connected to a first side of the tab connector and the structure is connected to a second side of the tab connector.

8. The diaphragm of claim 7 , wherein the tab connector slopes from the structure to the tab end and the tab end extends radially from the tab connector and is parallel in profile with at least a portion of the structure.

9. The diaphragm of claim 7 , wherein the tab connector defines a tab notch, and the tab notch is a notch in the tab connector.

10. A method of attaching a diaphragm to a bonnet assembly of a diaphragm valve, the method comprising:
inserting a diaphragm stud of a diaphragm through an aperture of a backing cushion, wherein the diaphragm and the backing cushion comprise a diaphragm assembly;
inserting the diaphragm stud into a connector of the bonnet assembly;
turning the diaphragm assembly with respect to the bonnet assembly, wherein the turning of the diaphragm assembly couples the diaphragm stud with the connector of the bonnet assembly;
aligning the diaphragm assembly with the bonnet assembly; and
pressing the diaphragm assembly against the bonnet assembly, wherein the diaphragm includes first tabs and second tabs, at least one tab of the diaphragm engages with a notch of the bonnet assembly and fixes the diaphragm assembly rotationally with respect to the bonnet assembly, the first tabs are longer than the second tabs, and the first tabs extend out radially from the bonnet and indicate an alignment of the diaphragm and a diaphragm bead relative to the bonnet assembly.

11. The method of claim 10 , further comprising, subsequent to attaching the diaphragm assembly to the bonnet assembly, connecting the diaphragm assembly and bonnet assembly to a body assembly to form a diaphragm valve.

12. The method of claim 11 , wherein the diaphragm assembly engages with a weir of the body assembly to control a flow of fluid through a fluid passageway of the body assembly.

13. A diaphragm for a diaphragm valve, the diaphragm comprising:
a structure, wherein the structure is a disc shape with a top side and a bottom side, the top side and the bottom side are circular in outline;
a diaphragm stud at a center point on the top side of the structure, wherein the diaphragm stud is configured to couple with a connector of a bonnet assembly;
tabs, wherein the tabs extend radially from the structure along an axis of the structure at outer edges of the structure, wherein the tabs and the structure define one or more diaphragm alignment holes or one or more diaphragm alignment pins; and
a diaphragm bead on the bottom side of the structure, wherein the diaphragm bead is along the axis of the structure, and
wherein the one or more diaphragm alignment holes engage with one or more bonnet alignment pins of the bonnet assembly to align the diaphragm to the bonnet assembly when the diaphragm is attached to the bonnet assembly or the one or more diaphragm alignment pins engage with one or more bonnet alignment orifices of the bonnet assembly to align the diaphragm to the bonnet assembly when the diaphragm is attached to the bonnet assembly and tabs extend out radially from the bonnet assembly and indicate an alignment of the diaphragm and the diaphragm bead relative to the bonnet assembly.

14. The diaphragm of claim 13 , wherein the structure of the diaphragm is comprised of polytetrafluoroethylene (PTFE).

15. The diaphragm of claim 13 , wherein the tabs extend radially from the structure in a same profile plane as the structure.

16. The diaphragm of claim 13 , wherein a backing cushion is secured between the diaphragm and the bonnet assembly when the diaphragm is attached to the bonnet assembly.

17. The diaphragm of claim 13 , wherein the backing cushion has a disc shape.

Assignees

• Itt Mfg Enterprises Llc

Inventors

• Matalon Louis E
• Kovacs Richard
• Lindt David
• Yoder Michael D

Classifications

• F16K27/0236 Primary

  Diaphragm cut-off apparatus · CPC title

• F16K7/126

  the seat being formed on a rib perpendicular to the fluid line · CPC title