CN218266138U

CN218266138U - Fuel pump pressure release three-way valve

Info

Publication number: CN218266138U
Application number: CN202222595686.6U
Authority: CN
Inventors: 郑洁; 蔡智翔; 宗超; 潘伟东; 周宗銮
Original assignee: Zhejiang Jinjia Automobile Parts Co ltd
Current assignee: Zhejiang Jinjia Automobile Parts Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-01-10
Anticipated expiration: 2032-09-29

Abstract

The utility model relates to a simple structure, equipment convenient fuel pump pressure release three-way valve. The utility model provides a fuel pump pressure release three-way valve, including valve body, non return case and disk seat, the disk seat is located the valve body, has oil inlet, oil-out and pressure release mouth on the valve body, its characterized in that: the valve seat is provided with a check valve core cavity, the check valve core cavity is communicated with the oil inlet through a check oil inlet hole, the check valve core cavity is communicated with the oil outlet through a check oil outlet hole, a check valve core seat is arranged in the check valve core cavity, and the check valve core is telescopically arranged in an expansion hole of the check valve core seat through a valve core rod. The fuel pump pressure relief three-way valve has the characteristics of compact structure, convenience in assembly and the like.

Description

Fuel pump pressure release three-way valve

Technical Field

The utility model relates to a valve, concretely relates to pressure release three-way valve of being connected with the fuel pump.

Background

The fuel pump can pump the fuel in the fuel tank to supply oil for the car end through the check valve, however, the car end can produce reverse pressure, and the pipeline of making the connection breaks easily, therefore generally all can increase a relief valve on the basis of check valve, make the reverse pressure that the car end produced carry out the pressure release through the relief valve. At present, three-way valves for realizing the functions of a one-way valve and a pressure release valve are available in the market, but the three-way valves are complex in structure and inconvenient to assemble.

Disclosure of Invention

In view of the deficiencies in the prior art, the utility model discloses the innovation provides a simple structure, equipment convenient fuel pump pressure release three-way valve.

The utility model provides a fuel pump pressure release three-way valve, including valve body, non return case and disk seat, the disk seat is located the valve body, oil inlet, oil-out and pressure release mouth have on the valve body, its characterized in that: the check valve is characterized in that the valve seat is provided with a check valve core cavity, the check valve core cavity is communicated with the oil inlet through a check oil inlet hole, the check valve core cavity is communicated with the oil outlet through a check oil outlet hole, a check valve core seat is arranged in the check valve core cavity, the check valve core is telescopically arranged in an expansion hole of the check valve core seat through a valve core rod, a check spring is sleeved on the valve core rod, the check spring acts between the check valve core and the check valve core seat and drives the check valve core to block the check oil inlet hole; the valve seat is provided with a pressure relief valve core cavity, the pressure relief valve core cavity is communicated with an oil outlet through a pressure relief oil inlet hole, the pressure relief valve core cavity is communicated with a pressure relief opening through a pressure relief oil outlet hole, a pressure relief spring and a pressure relief valve core are arranged in the pressure relief valve core cavity, and the pressure relief spring drives the pressure relief valve core to block the pressure relief oil inlet hole.

The valve body comprises a left valve body and a right valve body, wherein the left valve body and the right valve body are respectively provided with a buckle groove, the valve seat is provided with a buckle, the buckle can be buckled into the buckle grooves, the left end of the valve seat forms a seal with the inner wall of the left valve body through a left sealing ring, and the right end of the valve seat forms a seal with the inner wall of the right valve body through a right sealing ring.

The pressure relief oil inlet hole is located on the copper sleeve, and the copper sleeve is in interference connection or in threaded connection on the valve seat.

The check valve core seat is in interference connection or threaded connection with the valve seat

According to the utility model provides a fuel pump pressure release three-way valve has compact structure, characteristics such as equipment convenience.

Drawings

FIG. 1 is an external view of the present invention;

fig. 2 is a cross-sectional view of the present invention.

Detailed Description

As shown in fig. 1 and 2, the three-way valve for fuel pump pressure relief has two functions, one is a one-way valve function, and the other is a pressure relief valve function, and the two are combined together to form a three-way valve.

The structure and the working principle of the pressure relief three-way valve of the fuel pump are described in detail below.

As shown in fig. 2, the three-way pressure relief valve for the fuel pump comprises a valve body 1, a check valve core 3 and a valve seat 2, wherein the valve seat 2 is located in the valve body 1, the valve body 1 is provided with an oil inlet 11, an oil outlet 12 and a pressure relief opening 10, the valve seat 2 is provided with a check valve core cavity 20, the check valve core cavity 20 is communicated with the oil inlet 11 through a check oil inlet hole 22, the check valve core cavity 20 is communicated with the oil outlet 12 through a check oil outlet hole 23, a check valve core seat 4 is arranged in the check valve core cavity 20, the check valve core 3 is telescopically arranged in a telescopic hole 40 of the check valve core seat 4 through a valve core rod 31, the valve core rod 31 is sleeved with a check spring 32, the check spring 32 acts between the check valve core 3 and the check valve core seat 4, and drives the check valve core 3 to block the check oil inlet hole 22; the valve seat 2 is provided with a relief valve core cavity 21, the relief valve core cavity 21 is communicated with the oil outlet 12 through a relief oil inlet hole 24, the relief valve core cavity 21 is communicated with the relief port 10 through a relief oil outlet hole 25, a relief spring 50 and a relief valve core 5 are arranged in the relief valve core cavity 21, and the relief spring 50 drives the relief valve core 5 to block the relief oil inlet hole 24.

The working principle of the pressure relief three-way valve of the fuel pump is as follows: the fuel pump enters fuel into the valve body 1 through the oil inlet 11, the fuel pushes the check valve core 3 to move (move to the right in the figure 2) through the check oil inlet hole 22, so that the check valve core 3 does not block the check oil inlet hole 22 any more, the fuel enters the check valve core cavity 20, and then enters the oil outlet 12 through the check oil outlet hole 23, so that normal oil supply can be realized, and the check oil inlet hole 22 is blocked by the check valve core 3 due to reverse hydraulic pressure, so that the function of the check valve is realized. When the car end produces backpressure, and backpressure surpasss a definite value, then in the oil-out 12 promote the pressure release valve core 5 through pressure release inlet port 24 and remove (the left side removes in fig. 2), pressure release valve core 5 just no longer plugs up pressure release inlet port 24 like this, the fuel just enters into in the pressure release valve core chamber 21, then enters into pressure release mouth 10 through pressure release outlet port 25, just so can carry out the pressure release, because forward pressure can make pressure release valve core 5 plug up pressure release inlet port 24, just so can only carry out the backpressure.

Through the structure, one three-way valve can realize the functions of the one-way valve and the pressure release valve.

For the convenience of assembly, the utility model discloses a valve body 1 comprises left valve body and right valve body, as shown in fig. 1, all is equipped with buckle groove 13 on the left valve body and the right valve body, and is equipped with buckle 26 on the disk seat 2. During assembly, the valve seat 2 is only required to be arranged in the left valve body and the right valve body, and then the buckle 26 on the valve seat 2 can be buckled into the buckle groove 13 of the valve body 1, so that the assembly is very convenient; and the left end of the valve seat 2 forms a seal with the inner wall of the left valve body through the left sealing ring, and the right end of the valve seat 2 forms a seal with the inner wall of the right valve body through the right sealing ring, so that leakage is avoided.

In order to install the pressure relief valve core 5 conveniently, the pressure relief oil inlet hole 24 is arranged on the copper sleeve, and the copper sleeve is in interference connection or in threaded connection with the valve seat 2. During assembly, the pressure relief valve core 5 and the pressure relief spring 50 are installed, and then the copper sleeve is connected to the valve seat 2.

Similarly, for convenient installation check case 3, the utility model discloses a 4 interference connections of check valve core print seat or threaded connection are on disk seat 2. During assembly, the check valve core 3 and the valve core rod 31 are firstly installed on the check valve core seat 4, and then the check valve core seat 4 is connected on the valve seat 2.

Claims

1. The utility model provides a fuel pump pressure release three-way valve, including valve body (1), non return case (3) and disk seat (2), disk seat (2) are located valve body (1), have oil inlet (11), oil-out (12) and pressure release mouth (10), its characterized in that on valve body (1): the check valve is characterized in that the valve seat (2) is provided with a check valve core cavity (20), the check valve core cavity (20) is communicated with the oil inlet (11) through a check oil inlet hole (22), the check valve core cavity (20) is communicated with the oil outlet (12) through a check oil outlet hole (23), a check valve core seat (4) is arranged in the check valve core cavity (20), the check valve core (3) is telescopically arranged in a telescopic hole (40) of the check valve core seat (4) through a valve core rod (31), a check spring (32) is sleeved on the valve core rod (31), the check spring (32) acts between the check valve core (3) and the check valve core seat (4), and the check valve core (3) is driven to block the check oil inlet hole (22); the valve seat (2) is provided with a pressure relief valve core cavity (21), the pressure relief valve core cavity (21) is communicated with an oil outlet (12) through a pressure relief oil inlet hole (24), the pressure relief valve core cavity (21) is communicated with a pressure relief port (10) through a pressure relief oil outlet hole (25), a pressure relief spring (50) and a pressure relief valve core (5) are arranged in the pressure relief valve core cavity (21), and the pressure relief oil inlet hole (24) is blocked by the pressure relief spring (50) for driving the pressure relief valve core (5).

2. A fuel pump pressure relief three-way valve according to claim 1, wherein: the valve body (1) comprises a left valve body and a right valve body, a buckle groove (13) is formed in the left valve body and the right valve body, a buckle (26) is arranged on the valve seat (2), the buckle (26) can be buckled into the buckle groove (13), the left end of the valve seat (2) is sealed through the left sealing ring and the inner wall of the left valve body, and the right end of the valve seat (2) is sealed through the right sealing ring and the inner wall of the right valve body.

3. A fuel pump pressure relief three-way valve according to claim 1, wherein: the pressure relief oil inlet hole (24) is located on the copper sleeve, and the copper sleeve is in interference connection or in threaded connection with the valve seat (2).

4. A fuel pump pressure relief three-way valve according to claim 1, wherein: the check valve core seat (4) is in interference connection or in threaded connection with the valve seat (2).