Manufacturing method for proportional valve body

Patent metadata

Field	Value
Publication number	US-11415232-B2
Application number	US-202017108564-A
Country	US
Kind code	B2
Filing date	Dec 1, 2020
Priority date	Feb 16, 2015
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

The present disclosure discloses a proportional valve body, a proportional valve and a manufacturing method for a proportional valve body. The proportional valve body comprises a body extending in an axial direction, the body being provided with a first cavity and a second cavity penetrating therethrough in the axial direction and isolated from each other; the body being further provided with a first through hole penetrating through an outer wall of the body, the first hole being communicated with the first cavity and isolated from the second cavity. In the present disclosure, the first cavity and the second cavity of the proportional valve body penetrate through the body in the axial direction, thus the general structure of the proportional valve body can be obtained by means of extrusion molding. Extrusion molding has the advantages of easy operation, high productivity, and high utilization ratio of raw materials. And the proportional valve body obtained by means of extrusion molding has favorable structural and mechanical properties.

First claim

What is claimed is:

1. A method of manufacturing a proportional valve, the method comprising:
extruding a section bar in a longitudinal direction, the section bar having a longitudinal axis, a first cavity extending in the longitudinal direction, and a second cavity isolated from the first cavity and extending in the longitudinal direction;
cutting a desired length from the section bar to define a valve body having first and second opposite ends spaced from each other in the longitudinal direction, such that the first and second cavities extend between the first and second ends of the valve body;
forming a first through hole in the section bar or the valve body, the first through hole communicating with the first cavity and being isolated from the second cavity;
forming a second through hole in the section bar or the valve body, the second through hole communicating with the second cavity and being isolated from the first cavity; and
forming a feature in the valve body to place the first and second cavities in communication with each other;
wherein the extruding step further includes at least one of:
extruding the section bar to include a third cavity extending in the longitudinal direction and isolated from the first and second cavities; and
forming the first cavity with a circular cross-section centered on the longitudinal axis and forming the second cavity with an arcuate surface having a radius centered on the longitudinal axis.

2. The method of claim 1 , wherein the extruding step includes forming the third cavity and wherein the third cavity includes a third cavity arcuate surface having a radius centered on the longitudinal axis.

3. The method of claim 1 , wherein the cutting step includes cutting at least one of the first and second ends perpendicular to the longitudinal axis.

4. The method of claim 1 , wherein forming the first through hole and forming the second through hole are performed on different sides of the section bar or valve body.

5. The method of claim 1 , wherein forming the first through hole and forming the second through hole are performed on a same side of the section bar or valve body.

6. The method of claim 1 , wherein forming the first through hole includes forming the first through hole perpendicular to the longitudinal axis.

7. The method of claim 1 , wherein forming a feature includes forming a first groove in the first end of the valve body or forming a fourth cavity in the valve body.

8. The method of claim 1 , further comprising forming a groove in the second end of the valve body and mounting a membrane in the groove to seal an end of the first or second cavity.

9. The method of claim 1 , further comprising mounting a first sealing element to the first end of the valve body in a sealed connection with the valve body and mounting a second sealing element to the second end of the valve body in a sealed connection with the valve body.

10. The method of claim 9 , wherein the second through hole extends through the first sealing element or the second sealing element.

11. A method of manufacturing a proportional valve, the method comprising:
extruding a section bar in a longitudinal direction, the section bar having a longitudinal axis, a first cavity extending in the longitudinal direction, and a second cavity isolated from the first cavity and extending in the longitudinal direction;
cutting a desired length from the section bar to define a valve body having first and second opposite ends spaced from each other in the longitudinal direction, such that the first and second cavities extend between the first and second ends of the valve body;
forming a first through hole in the section bar or the valve body, the first through hole communicating with the first cavity and being isolated from the second cavity;
forming a second through hole in the section bar or the valve body, the second through hole communicating with the second cavity and being isolated from the first cavity, wherein forming the second through hole includes forming the second through hole perpendicular to the first through hole; and
forming a feature in the valve body to place the first and second cavities in communication with each other.

12. The method of claim 11 , wherein forming the first through hole includes forming the first through hole perpendicular to the longitudinal axis.

13. The method of claim 11 , wherein the extruding step further includes at least one of:
extruding the section bar to include a third cavity extending in the longitudinal direction and isolated from the first and second cavities; and
forming the first cavity with a circular cross-section centered on the longitudinal axis and forming the second cavity with an arcuate surface having a radius centered on the longitudinal axis.

14. The method of claim 11 , further comprising mounting a first sealing element to the first end of the valve body in a sealed connection with the valve body and mounting a second sealing element to the second end of the valve body in a sealed connection with the valve body.

15. The method of claim 14 , wherein the second through hole extends through the first sealing element or the second sealing element.

16. A method of manufacturing a proportional valve, the method comprising:
extruding a section bar in a longitudinal direction, the section bar having a longitudinal axis, a first cavity extending in the longitudinal direction, and a second cavity isolated from the first cavity and extending in the longitudinal direction;
cutting a desired length from the section bar to define a valve body having first and second opposite ends spaced from each other in the longitudinal direction, such that the first and second cavities extend between the first and second ends of the valve body;
forming a first through hole in the section bar or the valve body, the first through hole communicating with the first cavity and being isolated from the second cavity;
forming a second through hole in the section bar or the valve body, the second through hole communicating with the second cavity and being isolated from the first cavity;
forming a feature in the valve body to place the first and second cavities in communication with each other; and
installing a spool in the first cavity or the second cavity for reciprocal movement of the spool parallel to the longitudinal axis.

17. The method of claim 16 , wherein the extruding step includes forming the first cavity with a circular cross-section centered on the longitudinal axis and forming the second cavity with an arcuate surface having a radius centered on the longitudinal axis.

18. The method of claim 16 , further comprising mounting a first sealing element to the first end of the valve body in a sealed connection with the valve body and mounting a second sealing element to the second end of the valve body in a sealed connection with the valve body.

19. The method of claim 18 , wherein the second through hole extends through the first sealing element or the second sealing element.

20. The method of claim 18 , further comprising forming a groove in the second end of the valve body and mounting a membrane in the groove to seal an end of the first or second cavity.

Assignees

• Smith Corp A O

Inventors

• Qiu Bu
• Bi Dayan
• Jiang Wei

Classifications

• F16K31/082 Primary

  using a electromagnet and a permanent magnet · CPC title

• F16K31/0675

  Electromagnet aspects, e.g. electric supply therefor · CPC title

• F16K27/0254

  with conical shaped valve members · CPC title

• F16K27/00 Primary

  Construction of housing (methods for welding housings B23K); Use of materials therefor · CPC title

• F16K31/0668

  Sliding valves · CPC title