Valve spring seat sleeve, valve assembly and plunger pump

Patent metadata

Field	Value
Publication number	US-11519405-B2
Application number	US-202117375233-A
Country	US
Kind code	B2
Filing date	Jul 14, 2021
Priority date	Apr 21, 2021
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A valve spring seat sleeve, a valve assembly, and a plunger pump are disclosed. The valve spring seat sleeve includes a cylindrical hollow structure, a first fluid hole, a first notch and a second notch; the cylindrical hollow structure includes a plunger passage; the first fluid hole passes through a sidewall of the cylindrical hollow structure and communicated with the plunger passage; the first notch and the second notch are located on a side of the cylindrical hollow structure opposite to the first fluid hole; the cylindrical hollow structure includes a first end portion, a second end portion and an intermediate portion, a center of the first fluid hole is located at the intermediate portion, the cylindrical hollow structure further includes a spring mounting portion located between the first notch and the second notch.

First claim

The invention claimed is:

1. A valve spring seat sleeve, comprising:
a cylindrical hollow structure comprising a plunger passage located in the cylindrical hollow structure;
a first fluid hole passing through a sidewall of the cylindrical hollow structure and communicated with the plunger passage;
a first notch located on a side of the cylindrical hollow structure opposite to the first fluid hole; and
a second notch located on the side of the cylindrical hollow structure opposite to the first fluid hole,
wherein the cylindrical hollow structure comprises a first end portion, a second end portion and an intermediate portion between the first end portion and the second end portion, a center of the first fluid hole is located at the intermediate portion, the first notch is located at the first end portion, the second notch is located at the second end portion, the cylindrical hollow structure further comprises a spring mounting portion located between the first notch and the second notch.

2. The valve spring seat sleeve according to claim 1 , wherein the first notch is located at the first end portion and recessed from an edge of the first end portion to the intermediate portion, and the second notch is located at the second end portion and recessed from an edge of the second end portion to the intermediate portion.

3. The valve spring seat sleeve according to claim 1 , wherein the spring mounting portion comprises a U-shaped groove, the U-shaped groove is recessed from a bottom of the first notch to the second notch, and the U-shaped groove is configured to mount a spring seat.

4. The valve spring seat sleeve according to claim 3 , wherein a surface of the spring mounting portion away from the plunger passage comprises a mounting surface, and a cut surface of the spring mounting portion cut by the U-shaped groove is an inclined surface, and an included angle between the inclined surface and the mounting surface is less than 90 degrees.

5. The valve spring seat sleeve according to claim 4 , wherein the included angle between the inclined surface and the mounting surface is less than 80 degrees.

6. The valve spring seat sleeve according to claim 1 , wherein the first fluid hole is opposite to the spring mounting portion.

7. The valve spring seat sleeve according to claim 1 , further comprising:
a first boss arranged on an outer surface of the cylindrical hollow structure and along an edge of the first end portion;
a second boss arranged on an outer surface of the cylindrical hollow structure and along an edge of the second end portion; and
a third boss arranged on an outer surface of the cylindrical hollow structure and located between the first boss and the second boss, and disconnected at a position where the first fluid hole is located.

8. A valve assembly, comprising:
the valve spring seat sleeve according to claim 1 ;
a spring seat mounted on the spring mounting portion; and
a spring mounted on the spring seat.

9. The valve assembly according to claim 8 , wherein the spring mounting portion comprises a U-shaped groove, the U-shaped groove is recessed from the first notch to the second notch, and the spring seat comprises:
a spring seat body;
a first mounting portion located at a side of the spring seat body and detachably connected with the U-shaped groove; and
a second mounting portion located at a side of the spring seat body away from the first mounting portion,
wherein, in a second direction perpendicular to the first direction from the first mounting portion to the second mounting portion, a size of the second mounting portion is smaller than a size of the spring seat body to form a boss structure with the spring seat body, and the boss structure is configured to be detachably connected with the spring.

10. The valve assembly according to claim 9 , wherein a surface of the spring mounting portion away from the plunger passage comprises a mounting surface, a cut surface of the spring mounting portion cut by the U-shaped groove is an inclined surface, and an included angle between the inclined surface and the mounting surface is less than 90 degrees,
the spring seat body is in contact with the mounting surface, the first mounting portion comprises a cone-shaped structure, a size of a part of the cone-shaped structure close to the spring seat body is smaller than that of a part of the cone-shaped structure away from the spring seat body to form a conical surface, and the conical surface is in contact with the inclined surface to mount the spring seat body on the spring mounting portion.

11. The valve assembly according to claim 9 , wherein the spring seat comprises:
a second fluid hole passing through the first mounting portion, the spring seat body and the second mounting portion.

12. The valve assembly according to claim 8 , further comprising:
a valve body comprising a valve main body portion, and a spring connecting portion and a guiding portion which are respectively arranged at two sides of the valve main body portion; and
a valve seat located at a side of the valve body away from the valve spring seat sleeve and comprising an intermediate hole;
wherein the spring connecting portion is connected with the spring, the guiding portion is located in the intermediate hole, and the valve main body portion is configured to move close to or away from the valve seat to open or close the intermediate hole.

13. A plunger pump comprising a hydraulic end, the hydraulic end comprising:
a valve box comprising a plunger chamber and a fluid chamber inside the valve box; and
a plunger located in the plunger chamber and configured to reciprocate along the plunger chamber; and
the valve assembly according to claim 8 ,
wherein the plunger chamber and the fluid chamber cross each other and form an alternating chamber at a crossing position, and the valve spring seat sleeve is arranged at the alternating chamber, a first axis of the plunger passage is parallel to a second axis of the plunger, and a size of the plunger passage in a direction perpendicular to the first axis is greater than or equal to a size of the plunger in a direction perpendicular to the second axis to allow the plunger to pass through.

14. The plunger pump according to claim 13 , wherein the fluid chamber comprises a third end portion and a fourth end portion which are oppositely arranged in an axial direction of the fluid chamber, and the spring and the spring seat are located on a side of the valve spring seat sleeve close to the third end portion.

15. The plunger pump according to claim 13 , further comprising:
a cover located at a side of the valve spring seat sleeve; and
a nut located at a side of the cover away from the valve spring seat sleeve,
wherein a part of the alternating chamber away from the cover comprises a boss surface, the first end portion of the valve spring seat sleeve is in contact with the boss surface, and the cover is in contact with the second end portion of the valve spring seat sleeve and configured to press the valve spring seat sleeve under a pressure from the nut.

16. The plunger pump according to claim 13 , further comprising:
a power end connected with the plunger and configured to drive the plunger to reciprocate.

Assignees

• Yantai Jereh Petroleum Equipment & Technologies Co Ltd

Inventors

• Deng Wenjie
• Jian Baoguo
• Liu Weichen
• Cui Haiping
• Li Peng
• Wang Jixin

Classifications

• F04B53/1087

  Valve seats · CPC title

• F04B53/22 Primary

  Arrangements for enabling ready assembly or disassembly · CPC title

• F16K17/0413

  in the form of closure plates · CPC title

• F04B53/1072 Primary

  the valve being an elastic body, the length thereof changing in the opening direction · CPC title

• F04B53/1032

  Spring-actuated disc valves (F04B53/1022, F04B53/103 take precedence) · CPC title