CN112879697A

CN112879697A - Novel valve module quick connector

Info

Publication number: CN112879697A
Application number: CN202110276567.1A
Authority: CN
Inventors: 佟晶茹; 田永巍; 冀宝玮; 赵波; 禚娴娴; 王丽萍; 李宏杰; 李庆刚; 宫云飞
Original assignee: Changchun Chinaust Automobile Parts Co ltd
Current assignee: Changchun Chinaust Automobile Parts Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-06-01

Abstract

The invention provides a novel quick connector of a valve assembly, which comprises a shell, a stop valve, a first sealing ring, a one-way valve and a spring. A valve body chamber and a spring chamber which are communicated with each other are formed in the shell; the stop valve is arranged in the valve body cavity and is provided with an inlet and an outlet, and the inlet is communicated with the outlet to form a channel; the first sealing ring is arranged in the valve body cavity, and the first sealing ring is attached to the stop valve when the joint is not assembled; the check valve is arranged in the valve chamber and is provided with a check valve plate, and the check valve plate can be arranged on one side of the outlet in a sliding manner so as to open or shield the outlet; the spring is located in the spring cavity, and the one end of spring is fixed in the casing, and the other end and check valve or stop valve butt when the spring warp drive the stop valve when the spring resets and reset. The invention can avoid fuel leakage when the joint is disconnected, and simultaneously carries out pressure relief, and the design of the valve component can save space cost.

Description

Novel valve module quick connector

Technical Field

The invention relates to the field of fuel pipe joints, in particular to a novel valve component quick connector.

Background

In the prior art, after an engine completes a thermal test, one end of a fuel pipe is connected with a fuel guide rail, and the other end of the fuel pipe is in a disconnected state, so that the problem of fuel leakage easily occurs in a conventional joint. To avoid this problem, it is necessary to develop a joint with a shut-off function so as to avoid fuel leakage. After fuel supply is stopped, the fuel quickly flows back to the fuel tank to generate noise, and the joint may be damaged by reverse high pressure. However, if the problems of fuel leakage and high-pressure joint damage are solved simultaneously, two parts need to be connected in series respectively, so that the number of the parts is increased, leakage points and production cost are increased, and the whole size is increased and the layout is inconvenient. Therefore, the invention needs to provide a joint which can simultaneously solve the problems of fuel leakage and high-pressure damage to a valve body during fuel backflow without increasing parts.

Disclosure of Invention

Therefore, the invention provides a novel valve component quick connector, which integrates two valve bodies with different functions into one connector, so that the problems of fuel leakage and fuel backflow high-pressure damage to the valve bodies are solved while the number of parts is reduced, the cost is saved.

To achieve the above object, the present invention provides a novel valve assembly quick connector, which comprises

The valve comprises a shell, a valve body cavity and a spring cavity which are communicated with each other are formed in the shell;

the stop valve is arranged in the valve body cavity and is provided with an inlet and an outlet, and the inlet is communicated with the outlet to form a channel;

the first sealing ring is arranged in the valve body cavity and is attached to the stop valve when the joint is not assembled;

the check valve is arranged in the valve body cavity and provided with a check valve plate, and the check valve plate can be slidably arranged on one side of the outlet to open or shield the outlet; and

the spring, the spring is located in the spring cavity, the one end of spring is fixed in the casing, the other end when the spring warp with the check valve or stop valve butt, drive when the spring resets the stop valve resets.

As a preferable scheme of the present invention, a pressure relief hole communicated to the passage is formed in a side surface of the stop valve, and a distance between the pressure relief hole and the inlet is smaller than a distance between the first seal ring and the inlet.

As a preferable scheme of the invention, the outer wall of the stop valve is provided with an annular groove, the check valve block is provided with a hollow extending part, the check valve is further provided with a check valve support, the check valve support comprises a valve seat and a clamping part, a cylindrical protruding shaft is arranged in the middle of the front side of the valve seat and matched with the hollow extending part, the clamping part is provided with a plurality of clamping jaws, the clamping jaws are circumferentially and uniformly distributed on the outer edge of the valve seat, the tail ends of the clamping jaws are fixed in the annular groove, the check valve block axially moves between the tail end of the stop valve and the front side of the valve seat, and one end of the spring is abutted against the.

As a preferable scheme of the present invention, the outlet is a plane, the plane is provided with a limiting hole and a via hole, the hollow extending portion is radially fixed to the limiting hole, and the one-way valve sheet can cover the via hole.

As a preferable scheme of the present invention, the inlet is sleeved with a sealing ring.

As a preferable scheme of the present invention, a second sealing ring is disposed in the valve cavity, the second sealing ring is fixed on the housing and is close to an inlet of the valve cavity, an isolation ring is installed between the first sealing ring and the second sealing ring, the first sealing ring is made of fluororubber, and the second sealing ring is made of fluorosilicone rubber.

As a preferable aspect of the present invention, a spacer ring is installed between the first seal ring and the check valve holder.

As a preferred scheme of the invention, the through holes are a plurality of and are uniformly distributed around the limiting hole.

As a preferable scheme of the invention, the one-way valve plate is an elastic piece.

Compared with the prior art, the invention has the beneficial effects that:

(1) through the combined action that sets up check valve, stop valve, spring, first sealing washer, avoid after the thermal test, two connect the disconnection to lead to the fuel to leak.

(2) Through set up the pressure release hole on the stop valve, can carry out the earial drainage when the quick oil return case of fuel forms reverse highly compressed, the pressure release.

(3) The check valve and the stop valve are integrated into a quick connector, so that the space is saved, and the cost is reduced.

Drawings

FIG. 1 is a cross-sectional view of a prior art quick connector for a valve assembly according to the present invention, the connector being in an unassembled state;

FIG. 2 is a cross-sectional view of the prior art quick connector for a valve assembly according to the present invention, after the connector is assembled;

FIG. 3 is an external view of a quick connector for a novel valve assembly;

FIG. 4 is a perspective view of the shut off valve 1;

FIG. 5 is a perspective view of the shut off valve 2;

FIG. 6 is a front view of the shut-off valve;

FIG. 7 is a right side view of the shut off valve;

FIG. 8 is a perspective view of the check valve 1;

FIG. 9 is a perspective view of the check valve 2;

fig. 10 is a cross-sectional view of the check valve.

Description of the reference symbols

Casing 1 second sealing ring 2

Sealing ring 3 spacer ring 4

First seal ring 5 spacer ring 6

Cut-off valve 7 pressure relief hole 71

Via 73 of limiting hole 72

Inlet 74 and outlet 75

Annular groove 76 check valve 8

Middle opening 811 of one-way valve sheet 81

Hollow extension 812 retaining cap 8121

Check valve support 82 valve seat 821

Gripping portion 822 claw 8221

Hook 8221a spring 9

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. In the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Fig. 1 and 3 show a quick connector for a novel valve assembly according to the present invention. As shown in figure 1, the quick connector of the novel valve assembly comprises a shell 1, wherein a valve body chamber and a spring chamber which are communicated with each other are formed in the shell 1. A stop valve 7, a sealing ring 3, a first sealing ring 5, a second sealing ring 2, a spacer ring 4, a spacer ring 6 and a one-way valve 8 are arranged in the valve body cavity.

As shown in fig. 4 and 5, the shutoff valve 7 has an inlet 74 and an outlet 75, and a passage is formed between the inlet 74 and the outlet 75. As shown in fig. 6, the side surface of the stop valve 7 is provided with a pressure relief hole 71 communicated to the channel, as shown in fig. 7, the outlet 75 is a plane, the middle position of the plane is provided with a limit hole 72, and the periphery of the limit hole 72 is uniformly distributed with via holes 73. As shown in fig. 5 and 6, the outer wall of the stop valve 7 is provided with an annular groove 76. As shown in fig. 1 and 2, the sealing ring 3 is sleeved at the inlet 74 of the stop valve 7, so that a buffering effect is achieved during the assembly process of the two joints, and the sealing performance is better when the two joints are in contact. And the opening size of the sealing ring 3 can be consistent with the size of the inlet 74 of the stop valve 7, so that the liquid can flow into the stop valve 7 more smoothly.

As shown in fig. 8 and 9, the check valve 8 may include a check valve plate 81 and a check valve bracket 82. The one-way valve plate 81 can cover the via hole 73, and the one-way valve plate 81 can be made of fluorosilicone rubber, so that the stop valve 7 can be better attached when deformed, and the best sealing effect is achieved. As shown in fig. 10, the check valve plate 81 is far away from the middle opening 811 of one side of the check valve bracket 82 and extends outward to form a hollow extension portion 812, the hollow extension portion 812 can form a fixing cap 8121 through an end portion, the fixing cap 8121 is installed and fixed in the limiting hole 72, or the hollow extension portion 812 can be fixed in the limiting hole 72 by sleeving an annular ring, so as to limit the radial movement of the check valve plate 81. Check valve support 82 includes valve seat 821 and chucking part 822, and valve seat 821 front side intermediate position has a cylindrical protruding axle to be used for cooperating with the hollow extension portion 812 of check valve piece 81, and chucking part 822 has three jack catch 8221 circumference equipartition in valve seat 821 outer fringe, as shown in fig. 1, the end of jack catch 8221 forms the pothook 8221a and is fixed in the annular recess 76 of stop valve 7, sets up check valve support 82 and can prevent when liquid pressure is too high, and check valve piece 81 drops. One-way valve plate 81 is axially movable between the end of stop valve 7 and the front side of valve seat 821.

As shown in fig. 1, the spring chamber houses a spring 9. One end of the spring 9 abuts against the housing 1, and the other end abuts against the rear side of the valve seat 821.

As shown in fig. 1, the first seal ring 5 and the second seal ring 2 are disposed in the valve chamber and fixed on the housing 1, the second seal ring 2 is made of fluorosilicone rubber, the first seal ring 5 is made of fluororubber, the fluororubber has better oil resistance and lower temperature resistance, and the two seal rings made of different materials can meet the requirements of actual working conditions on oil resistance and lower temperature resistance. An isolating ring 4 is arranged between the second sealing ring 2 and the first sealing ring 5 and used for isolating the sealing ring 2 from the sealing ring 5, so that the two sealing rings are not easy to shift. Install isolating ring 6 between first sealing washer 5 and the check valve support 82, avoid the contact of check valve support 82 and first sealing washer 5 to lead to first sealing washer 5 to shift. The distance between the pressure relief hole 71 and the inlet 74 of the stop valve 7 is smaller than the distance between the first sealing ring 5 and the inlet 74 of the stop valve 7. When the joint is not assembled, the relief hole 71 is located near the spacer ring 4.

When carrying out the assembly of male and female joint, as shown in fig. 2, this female joint (novel valve module quick connector) is inserted to the male joint, and the in-process is inserted, and male joint contact sealing ring 3 gets into the valve body cavity, then progressively forms sealedly with second sealing washer 2, first sealing washer 5, and stop valve 7, check valve 8 move forward simultaneously, and then through check valve support 82 compression spring 9. The male connector and the sealing ring 3 form a seal, liquid enters the stop valve 7 through the male connector and flows out through the conducting hole 73, the one-way valve plate 81 is pushed by the pressure of the liquid, the one-way valve plate 81 is opened, and the liquid flows into the spring chamber. The pressure relief opening 71 in the shut-off valve 7 now moves from the vicinity of the isolating ring 4 into the spring chamber.

Liquid stops flowing into the back, and entry pressure reduces or disappears, and check valve piece 81 and stop valve 7 in close contact with under negative pressure or the liquid pressure effect reach sealed purpose, realize reverse ending, and liquid can not flow out through conducting hole 73, and the gap inflow pressure release hole 71 between backward flow liquid accessible stop valve 7 and the casing 1, and then flows out through the male joint, plays the function of pressure release simultaneously.

After the male joint is pulled out, the spring 9 resets, the stop valve 7 is pushed back to the initial position, the one-way valve plate 81 keeps the closed state under the action of liquid pressure, meanwhile, the stop valve 7 and the first sealing ring 5 form a sealing surface, and liquid cannot flow out through the pressure relief hole 71, so that the stop function is realized.

The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.

Claims

1. A novel valve assembly quick connector, comprising:

2. The quick connector of claim 1, wherein a pressure relief hole is formed in a side surface of the stop valve and is communicated with the channel, and a distance between the pressure relief hole and the inlet is smaller than a distance between the first sealing ring and the inlet.

3. The quick connector of a novel valve assembly as claimed in claim 2, wherein the outer wall of the stop valve is provided with an annular groove, the check valve piece has a hollow extension portion, the check valve further has a check valve holder, the check valve holder includes a valve seat and a clamping portion, a cylindrical protruding shaft is arranged at a middle position of the front side of the valve seat and is matched with the hollow extension portion, the clamping portion has a plurality of clamping jaws which are evenly distributed on the outer edge of the valve seat circumferentially, the tail ends of the clamping jaws are fixed in the annular groove, the check valve piece axially moves between the tail end of the stop valve and the front side of the valve seat, and one end of the spring is abutted against the rear side of the valve seat.

4. The quick connector of claim 3, wherein the outlet is a plane, the plane is provided with a limiting hole and a via hole, the hollow extending part is radially fixed to the limiting hole, and the one-way valve plate can cover the via hole.

5. A novel valve assembly quick connector as claimed in any one of claims 1 to 4 wherein said inlet sleeve is provided with a sealing ring.

6. The quick connector of a novel valve assembly as claimed in any one of claims 1 to 4, wherein a second sealing ring is disposed in the chamber of the valve body, the second sealing ring is fixed to the housing and close to the inlet of the chamber of the valve body, a spacer ring is disposed between the first sealing ring and the second sealing ring, the first sealing ring is made of fluororubber, and the second sealing ring is made of fluorosilicone rubber.

7. A novel valve assembly quick connector as claimed in either one of claims 3 or 4, wherein a spacer ring is mounted between said first sealing ring and said one-way valve bracket.

8. The quick connector of claim 4, wherein said plurality of through holes are uniformly distributed around said limiting hole.

9. A novel valve assembly quick connector as claimed in any one of claims 1 to 4, wherein said one-way valve is a resilient member.