Rotatable value spool for a manifold

Patent metadata

Field	Value
Publication number	US-10865893-B2
Application number	US-201716075910-A
Country	US
Kind code	B2
Filing date	Jan 20, 2017
Priority date	Feb 11, 2016
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A rotatable valve spool for a spool valve manifold. The rotatable valve spool having a longitudinal axis along its length, a cylindrical body, a first end, and a second end. A first angled seal, a second angled seal, an optional central seal, and an outer seal each disposed on the cylindrical body with the optional central seal disposed between the first and second angled seals and the outer seal disposed between the second angled seal and the second end. A first flow port in the cylindrical body disposed outboard of the first angled seal between the first angled seal and the first end or disposed in the first end, and a second flow port disposed outboard of the second angled seal between the second angled seal and the outer seal.

First claim

What is claimed is:

1. A rotatable valve spool for a spool valve manifold comprising:
a longitudinal axis along the length of the rotatable valve spool, a cylindrical body, a first end, and a second end;
a first angled seal, a second angled seal, and an outer seal each disposed on the cylindrical body with the outer seal disposed between the second angled seal and the second end;
a first flow port in the cylindrical body disposed between the first angled seal and the first end or disposed in the first end; wherein the first flow port comprises a longitudinal bore through the cylindrical body;
a second flow port disposed between the second angled seal and the outer seal; and wherein the second flow port comprises a connecting port through an outer surface of the cylindrical body that allows a fluid to flow through the connecting port to a stem engagement bore in the second end.

2. The rotatable valve spool of claim 1 wherein the first flow port comprises a connecting port through an outer surface of the cylindrical body and the longitudinal bore through the cylindrical body.

3. The rotatable valve spool of claim 1 wherein the second end comprises a cylindrical ring having a ring diameter greater than a body diameter of the cylindrical body.

4. The rotatable valve spool of claim 1 , wherein the first end comprises a rotation limit boss.

5. The rotatable valve spool of claim 4 wherein the rotation limit boss comprises a circular wedge having a first angular stop, a second angular stop, and a recessed section between the first and second angular stops.

6. The rotatable valve spool of claim 1 wherein the stem engagement bore comprises a stem engagement member.

7. The rotatable valve spool of claim 6 wherein the stem engagement member comprises a tapered cylindrical bushing having a length of d 1 with a hollow cylinder extending from an upper surface forming an annulus; extending laterally on opposing sides of the annulus are two wedge shaped wings that each resemble a keystone for an archway; the wedge shaped wings extend a depth of d 2 from the upper surface of the tapered cylindrical bushing and the annulus extends a distance of d 3 from an upper surface of the wedge shaped wings.

8. The rotatable valve spool of claim 1 wherein the first angled seal and the second angled seal are parallel to each other.

9. The rotatable valve spool of claim 1 wherein a central seal is disposed between the first and second angled seals, and the first angled seal and the second angle seal are both closer to the central seal on a first side of the cylindrical body and are both farther away from the central seal on an opposing second side of the cylindrical body.

10. The rotatable valve spool of claim 1 wherein the first angled seal and the second angle seal form an included angle and the included angle is between 20 degrees to 80 degrees.

11. The rotatable valve spool of claim 1 wherein a central seal is disposed between the first and second angled seals, and the central seal is effective to prevent fluid bypass from an inlet port to an outlet port on a spool valve manifold containing the rotatable valve spool when the rotatable valve spool is in a closed position.

12. The rotatable valve spool of claim 1 wherein a central seal is not present and fluid can pass from an inlet port to an outlet port on a spool valve manifold containing the rotatable valve spool when the rotatable valve spool is in a closed position.

13. The rotatable valve spool of claim 1 further comprising a housing and a support flange with the rotatable spool valve inserted into the housing above the support flange.

14. The rotatable valve spool of claim 13 wherein the second end comprises a cylindrical ring having a ring diameter greater than a body diameter of the cylindrical body.

15. The rotatable valve spool of claim 13 wherein the first end comprises a rotation limit boss and the rotation limit boss comprises a circular wedge having a first angular stop, a second angular stop, and a recessed section between the first and second angular stops.

16. The rotatable valve spool of claim 13 wherein the housing comprises an inlet port and an outlet port that are vertically stacked with their centers located in the same plane, the centers separated by a distance, and the inlet port and the outlet port are located on the same side of the housing.

17. The rotatable valve spool of claim 13 wherein the housing comprises an inlet port and an outlet port and the inlet port and the outlet port are located on opposite sides of the housing.

18. The rotatable valve spool of claim 1 wherein the stem engagement bore comprises a stem engagement member.

19. The rotatable valve spool of claim 18 wherein the stem engagement member comprises a tapered cylindrical bushing having a length of d 1 with a hollow cylinder extending from an upper surface forming an annulus; extending laterally on opposing sides of the annulus are two wedge shaped wings that each resemble a keystone for an archway; the wedge shaped wings extend a depth of d 2 from the upper surface of the tapered cylindrical bushing and the annulus extends a distance of d 3 from an upper surface of the wedge shaped wings.

Assignees

• 3M Innovative Properties Co
• 3m innovative properties inc

Inventors

• Marks Nathan E
• Schmoll Jeremy A

Classifications

• B01D2201/4061

  between a cartridge and a filter head or manifold · CPC title

• B01D2201/302

  having inlet or outlet ports · CPC title

• B01D35/1573

  Flow control valves · CPC title

• B01D2201/4015

  Bayonet connecting means · CPC title

• F16K11/085 Primary

  with cylindrical plug · CPC title