CN219139954U

CN219139954U - Bypass valve and oil filter

Info

Publication number: CN219139954U
Application number: CN202223448368.3U
Authority: CN
Inventors: 黄利友; 李威; 黄天明; 庞毅
Original assignee: Guangxi Watyuan Filtration System Co ltd
Current assignee: Guangxi Watyuan Filtration System Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-06-06
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses a bypass valve which comprises a valve seat, a column pipe, a valve core and a spring, wherein the valve core and the spring are sequentially and movably arranged in the column pipe from top to bottom, the valve seat is fixed at the top end of the column pipe, and a retainer ring is clamped in the column pipe at the bottom end of the spring. The bypass valve has an integral structure, can facilitate the opening pressure adjustment test and ensures the stability and the precision of the opening pressure. The utility model also discloses an oil filter. The oil filter of the utility model ensures the oil pressure balance of the oil filter, thereby being capable of better oil filter.

Description

Bypass valve and oil filter

Technical Field

The present utility model relates to a bypass valve, and more particularly, to a bypass valve and an oil filter.

Background

The bypass valve is a valve for balancing the water pressure before and after the water inlet valve by filling water into a bypass pipeline of the inlet valve pipe section, and is widely applied to oil filters (such as a hydraulic oil filter, a fuel oil filter, an engine oil filter and the like) for balancing the oil pressure.

In the existing oil filter, for example, patent numbers are as follows: 202220806424.7 a hydraulic oil filter core with bypass valve, its bypass valve is through the pillar that sets up, the case promotes laminating mutually between cushion and the pillar top inner wall under the effect of spring, hydraulic oil promotes the case and gets into the pillar and filter through inner frame and right-hand member lid outflow through straining the post filtration when the outside pressure differential of hydraulic oil filter core is great, hydraulic oil passes and strains a section of thick bamboo layer filtration through the through-hole and get into the inner frame and pass right-hand member lid outflow when the outside pressure differential of hydraulic oil is less, and outside screw seat threaded connection is inside in the internal thread annular, the convenience is adjusted the compactness of case and pillar top inner wall laminating, and then reach the compression degree of adjusting spring, make things convenient for the case to adjust according to the difference of the inside and outside pressure differential of hydraulic oil filter core.

Therefore, the existing bypass valve opening pressure is adjusted through the external thread seat, namely the external thread seat is in threaded connection with the column pipe, and the pressure in the oil filter is relatively high, so that the external thread seat is easy to be impacted by oil to cause loosening in the use process, or the external thread seat is easy to be impacted to cause loosening in the installation process of the bypass valve, so that the stroke of the spring is changed, and the problems of unstable opening pressure and low precision are caused. Therefore, there is a need to develop a new bypass valve.

Disclosure of Invention

The utility model aims to solve the technical problems in the prior art, and one of the purposes is to provide a bypass valve with an integral structure, which can facilitate the opening pressure adjustment test and ensure the stability and the accuracy of the opening pressure.

The second purpose is to provide an oil filter, which ensures the oil pressure balance of the oil filter, and further can better protect the filter element.

The first technical scheme of the utility model is as follows: the bypass valve comprises a valve seat, a column pipe, a valve core and a spring, wherein the valve core and the spring are sequentially and movably installed in the column pipe from top to bottom, the valve seat is fixed at the top end of the column pipe, and a retainer ring is clamped in the column pipe at the bottom end of the spring.

As a further improvement, the center of the valve seat is provided with a through oil drain channel, and the outer wall of the column tube is provided with an oil drain hole.

Further, a plurality of oil drain holes are formed, and each oil drain hole is a strip-shaped hole extending along the axial direction of the column tube.

Further, the valve seat and the column tube are fixed by riveting or welding.

Further, a positioning groove is formed in the bottom end of the valve seat, and the column tube is inserted into the positioning groove.

Further, a sealing ring is arranged on the valve seat at the inner side of the positioning groove, and the sealing ring is attached to the top of the valve core.

Further, a sinking groove is formed in the center of the top of the valve core.

Further, the outer diameters of the valve core and the spring are matched with the inner diameter of the column tube.

Further, the bottom of the column tube is provided with a clamping groove, the retaining ring is clamped in the clamping groove, and the width of the clamping groove is larger than the thickness of the retaining ring.

The second technical scheme of the utility model is as follows: the oil filter comprises the bypass valve and further comprises an oil filter base body, wherein the valve seat is detachably arranged in a mounting hole formed in the oil filter base body.

Advantageous effects

Compared with the prior art, the utility model has the following advantages:

1. according to the bypass valve, the valve seat is fixed at the top of the column tube, the retainer ring is clamped at the bottom of the column tube, the valve core and the spring are packaged in the column tube, so that the whole bypass valve is of an integral structure, after the whole bypass valve is assembled, the opening pressure adjustment test can be carried out, the bypass valve is filled into the oil filter after the whole bypass valve is assembled, the bypass valve is not required to be filled into the oil filter for testing, the opening pressure adjustment test can be conveniently carried out, the stroke of the spring is not changed in the using or mounting process, and the stability and the precision of the opening pressure are ensured.

2. According to the bypass valve, the valve core and the spring are arranged in the column pipe, the outer diameters of the valve core and the spring are matched with the inner diameter of the column pipe, the limiting effect on the spring is achieved, the spring cannot deflect outwards in the actual use process, and the accuracy of the opening pressure of the bypass valve can be further improved.

3. According to the bypass valve, the spring is supported and limited through the check ring, and when the stroke of the spring is changed in the actual use process, the stroke of the spring can be adjusted by replacing check rings with different thicknesses, so that the stability of the opening pressure of the bypass valve is ensured.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic cross-sectional view of a valve seat according to the present utility model;

FIG. 4 is a schematic perspective view of a valve seat according to the present utility model;

FIG. 5 is a schematic cross-sectional view of a vial according to the present utility model;

FIG. 6 is a schematic cross-sectional view of a valve element according to the present utility model;

FIG. 7 is a schematic diagram of the structure of the present utility model in application;

fig. 8 is an enlarged schematic view of the structure at a in fig. 7.

Wherein: 1-valve seat, 2-pillar tube, 3-valve core, 4-spring, 5-retainer ring, 6-oil drain duct, 7-oil drain hole, 8-positioning groove, 9-sealing ring, 10-sinking groove, 11-clamping groove, 12-oil filter seat body, 13-mounting hole, 14-positioning column and 15-transverse groove.

Detailed Description

The utility model will be further described with reference to specific embodiments in the drawings.

Referring to fig. 1-6, the bypass valve comprises a valve seat 1, a column pipe 2, a valve core 3 and a spring 4, wherein the valve core 3 and the spring 4 are movably installed in the column pipe 2 from top to bottom in sequence, the valve seat 1 is fixed at the top end of the column pipe 2, a retainer ring 5 is clamped in the column pipe 2 at the bottom end of the spring 4, the column pipe 2 wraps the valve core 3 and the spring 4, two ends of the spring 4 are respectively abutted against and attached to the bottom surface of the valve core 3 and the top surface of the retainer ring 5, and the top surface of the valve core 3 is attached to the bottom surface of the valve seat 1 to form oil path sealing.

According to the bypass valve disclosed by the utility model, the valve seat 1 is fixed at the top of the column tube 2, the retainer ring 5 is clamped at the bottom of the column tube 2, the valve core 3 and the spring 4 are packaged in the column tube 2, so that the whole bypass valve is of an integral structure, after the whole bypass valve is assembled, the opening pressure adjustment test can be performed, the bypass valve is filled into the oil filter after the whole bypass valve is tested, the bypass valve is not required to be filled into the oil filter for testing, the opening pressure adjustment test can be conveniently performed, in addition, the stroke of the spring 4 is not changed in the use or installation process, and the stability and the precision of the opening pressure are ensured.

Preferably, a through oil drain 6 is arranged in the center of the valve seat 1, an oil drain hole 7 is arranged on the outer wall of the column pipe 2, when the oil pressure presses the valve core 3, the spring 4 is compressed, the valve core 3 moves downwards, and at the moment, oil can be discharged through a gap between the valve core 3 and the valve seat 1, and then is discharged through the oil drain hole 7. Further, the oil drain holes 7 are provided in a plurality, each oil drain hole 7 is a strip-shaped hole extending along the axial direction of the column tube 2, so that oil can be discharged, meanwhile, the weight of the column tube 2 can be reduced, materials are reduced, the cost is reduced, and the structural strength is improved.

Preferably, the valve seat 1 and the column tube 2 are fixed by riveting or welding. In other embodiments, fixation may also be achieved by a screw radial connection. Further, the positioning groove 8 is formed in the bottom end of the valve seat 1, the positioning groove 8 is matched with the column tube 2, the column tube 2 is inserted into the positioning groove 8, the valve seat 1 and the column tube 2 are conveniently positioned and connected, the column tube 2 is inserted into the positioning groove 8 in actual assembly, and then the outer edge of the valve seat 1 is riveted or welded with the outer wall of the column tube 2.

Preferably, a sealing ring 9 is arranged on the valve seat 1 at the inner side of the positioning groove 8, the outer wall of the sealing ring 9 is attached to the inner wall of the column tube 2, and the sealing ring 9 is attached to the top of the valve core 3 to form the sealing of an oil path. Further, a seal ring may be provided between the seal ring 9 and the valve element 3 to further improve the sealing property.

Preferably, a sinking groove 10 is formed in the center of the top of the valve core 3, oil pressure can be concentrated to the center position of the valve core 3, the problem that the gravity center of the valve core 3 is deflected is solved, friction force between the valve core 3 and the inner wall of the column tube 2 is reduced, and stability and accuracy of opening pressure are improved. Further, a positioning column 14 is integrally formed at the bottom of the valve core 3, and the spring 4 is sleeved on the positioning column 14, so that the positioning and the installation of the spring are facilitated.

Preferably, the outer diameters of the valve core 3 and the spring 4 are matched with the inner diameter of the column tube 2, the outer walls of the valve core 3 and the spring 4 are in clearance fit with the inner wall of the column tube 2, the clearance distance is 0.1-0.8 mm, the friction force of the valve core 3 and the spring 4 relative to the inner wall of the column tube 2 is reduced while the limit of the valve core 3 and the spring 4 is met, and the stability and the accuracy of the opening pressure are further ensured.

According to the bypass valve, the valve core 3 and the spring 4 are arranged in the column pipe 2, the outer diameters of the valve core 3 and the spring 4 are matched with the inner diameter of the column pipe, the limiting effect on the spring 4 is achieved, the spring 4 cannot deflect outwards in the actual use process, and the accuracy of the opening pressure of the bypass valve can be further improved.

Preferably, a clamping groove 11 is formed in the bottom of the column tube 2, wherein the retainer ring 5 is an elastic retainer ring for holes, the retainer ring 5 is clamped in the clamping groove 11, and the width of the clamping groove 11 is larger than the thickness of the retainer ring 5.

According to the bypass valve, the spring 4 is supported and limited through the retainer ring 5, and in the practical use process, when the stroke of the spring 4 is changed, the stroke of the spring 4 can be adjusted by replacing the retainer ring 5 with different thickness or adding gaskets with different thickness, so that the stability of the opening pressure of the bypass valve is guaranteed.

As shown in fig. 7-8, an oil filter comprises the bypass valve and further comprises an oil filter base 12, wherein the valve seat 1 is detachably arranged in a mounting hole 13 formed in the oil filter base 12, so that the whole bypass valve is convenient to detach and maintain. Specifically, the outer wall of the valve seat 1 is provided with external threads, the mounting hole 13 is internally provided with internal threads, the valve seat 1 is mounted in the mounting hole 13 through the matching of the external threads and the internal threads, the disassembly and the assembly are more convenient, and preferably, the top of the valve seat 1 can be provided with a transverse groove 15, so that the valve seat 1 is conveniently screwed, and the disassembly and the assembly are more convenient; or the valve seat 1 can be inserted into the mounting hole 13 and then fastened by a screw; in other embodiments, the valve seat 1 of the bypass valve may also be secured by welding or interference fit.

While only the preferred embodiments of the present utility model have been described above, it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these do not affect the effect of the implementation of the present utility model and the utility of the patent.

Claims

1. The utility model provides a bypass valve, includes disk seat (1), pillar (2), case (3) and spring (4), case (3), spring (4) top-down movable mounting in proper order in pillar (2), its characterized in that, disk seat (1) fix on the top of pillar (2), joint has retaining ring (5) in pillar (2) of spring (4) bottom, disk seat (1) bottom seted up constant head tank (8), pillar (2) peg graft in constant head tank (8).

2. The bypass valve according to claim 1, wherein the center of the valve seat (1) is provided with a through oil drain channel (6), and the outer wall of the column tube (2) is provided with an oil drain hole (7).

3. A by-pass valve according to claim 2, characterized in that a plurality of oil drain holes (7) are provided, each oil drain hole (7) being an elongated hole extending axially along the pillar (2).

4. A bypass valve according to claim 1, characterized in that the valve seat (1) is fixed to the column tube (2) by riveting or welding.

5. The bypass valve according to claim 1, characterized in that the valve seat (1) inside the positioning groove (8) is provided with a sealing ring (9), and the sealing ring (9) is attached to the top of the valve core (3).

6. The bypass valve according to claim 1, wherein a sinking groove (10) is formed in the center of the top of the valve core (3).

7. A bypass valve according to claim 1, characterized in that the outer diameter of the valve element (3) and the spring (4) are adapted to the inner diameter of the column tube (2).

8. The bypass valve according to claim 7, characterized in that the bottom of the pillar tube (2) is provided with a clamping groove (11), the retainer ring (5) is clamped in the clamping groove (11), and the width of the clamping groove (11) is larger than the thickness of the retainer ring (5).

9. An oil filter, characterized by comprising a bypass valve according to any one of the preceding claims 1-8, and further comprising an oil filter housing (12), said valve seat (1) being detachably mounted in a mounting hole (13) provided in the oil filter housing (12).