A new type of quick-connect fitting for valve assembly

By integrating the shut-off valve and the check valve into one joint, the combination of the check valve, the shut-off valve, the spring and the sealing ring is used to solve the problems of fuel leakage and high-pressure damage, achieving the effect of parts reduction and cost reduction.

CN112879697BActive Publication Date: 2024-12-31CHANGCHUN CHINAUST AUTOMOBILE PARTS
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Patent Information

Application Number
CN202110276567.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-03-15
Publication Date
2024-12-31
Estimated Expiration
2041-03-15

AI Technical Summary

Technical Problem

Existing fuel pipe fittings are prone to fuel leakage and high pressure damage problems after thermal tests, and existing solutions require increased parts and increased costs.

Method used

Design a new valve assembly quick plug joint to integrate the stop valve and the check valve into one joint. By setting the joint action of the check valve, the stop valve, the spring and the sealing ring, the fuel leakage and high-pressure damage are prevented. Use pressure relief holes to discharge to reduce parts quantity and cost.

Benefits of technology

It effectively avoids fuel leakage and high-pressure damage problems, reduces the number and cost of parts, and achieves space saving and cost reduction.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a new type of valve assembly quick-insert connector, including a housing, a stop valve, a first sealing ring, a one-way valve, and a spring. A valve body chamber and a spring chamber are formed in the housing; the stop valve is arranged in the valve body chamber and has an inlet and an outlet, and the inlet and the outlet are connected to form a channel; the first sealing ring is arranged in the valve body chamber, and when the connector is not assembled, the first sealing ring fits the stop valve; the one-way valve is arranged in the valve body chamber, and the one-way valve has a one-way valve plate, and the one-way valve plate can be slidably arranged on one side of the outlet to open or cover the outlet; the spring is arranged in the spring chamber, one end of the spring is fixed to the housing, and the other end of the spring abuts against the one-way valve or the stop valve when it is deformed, and the stop valve is driven to reset when the spring is reset. The present invention can avoid fuel leakage when the connector is disconnected, and relieve pressure at the same time, and the valve assembly design can save space costs.
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Description

Technical Field

[0001] The invention relates to the field of fuel oil pipe joints, and in particular to a novel valve assembly quick-plug joint. Background Art

[0002] In the prior art, after the engine completes the hot test, one end of the fuel pipe is connected to the fuel rail and the other end is disconnected, and conventional joints are prone to fuel leakage. In order to avoid this problem, it is necessary to develop a joint with a cut-off function to avoid fuel leakage. After the fuel supply is stopped, the fuel quickly flows back to the fuel tank, which will cause noise, and the reverse high pressure may damage the joint. However, if the problems of fuel leakage and high-pressure damage to the joint are to be solved at the same time, the two components need to be connected in series separately, which will increase the number of parts, as well as the leakage points and production costs. In addition, the overall volume is increased and it is inconvenient to layout. Therefore, it is necessary to invent a joint that does not require the addition of parts and can simultaneously solve the problems of fuel leakage and high-pressure damage to the valve body during fuel reflux. Summary of the invention

[0003] To this end, the present invention proposes a novel valve assembly quick-insert connector that integrates two valve bodies with different functions into one connector, thereby reducing the number of parts and saving costs while solving the problems of fuel leakage and fuel reflux high pressure damaging the valve body.

[0004] To achieve the above object, the present invention provides a novel valve assembly quick-connect connector, comprising

[0005] A housing, wherein a valve body chamber and a spring chamber are formed in the housing;

[0006] A stop valve, the stop valve is arranged in the valve body chamber, the stop valve has an inlet and an outlet, the inlet and the outlet are connected to form a channel;

[0007] a first sealing ring, the first sealing ring being arranged in the valve body chamber and being in contact with the stop valve when the joint is not assembled;

[0008] a one-way valve, the one-way valve being disposed in the valve body chamber, the one-way valve having a one-way valve plate, the one-way valve plate being slidably disposed on one side of the outlet to open or cover the outlet; and

[0009] A spring is arranged in the spring chamber, one end of the spring is fixed to the housing, the other end of the spring abuts against the one-way valve or the stop valve when the spring is deformed, and the stop valve is driven to reset when the spring is reset.

[0010] As a preferred solution of the present invention, a pressure relief hole connected to the channel is opened on the side of the stop valve, and the distance between the pressure relief hole and the inlet is smaller than the distance between the first sealing ring and the inlet.

[0011] As a preferred solution of the present invention, the outer wall of the stop valve is provided with an annular groove, the one-way valve disc has a hollow extension portion, the one-way valve also has a one-way valve bracket, the one-way valve bracket includes a valve seat and a clamping portion, a cylindrical protruding shaft is provided in the middle position of the front side of the valve seat and cooperates with the hollow extension portion, the clamping portion has a plurality of claws which are evenly distributed around the outer edge of the valve seat, the ends of the claws are fixed in the annular groove, the one-way valve disc moves axially between the end of the stop valve and the front side of the valve seat, and one end of the spring abuts against the rear side of the valve seat.

[0012] As a preferred solution of the present invention, the outlet is a plane, a limiting hole and a conducting hole are provided on the plane, the hollow extension portion is radially fixed to the limiting hole, and the one-way valve sheet can cover the conducting hole.

[0013] As a preferred solution of the present invention, the inlet sleeve is provided with a sealing ring.

[0014] As a preferred solution of the present invention, a second sealing ring is provided in the valve body chamber, the second sealing ring is fixed on the shell and close to the entrance of the valve body chamber, 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.

[0015] As a preferred solution of the present invention, an isolation ring is installed between the first sealing ring and the one-way valve bracket.

[0016] As a preferred solution of the present invention, there are a plurality of the conducting holes which are evenly distributed around the limiting hole.

[0017] As a preferred solution of the present invention, the one-way valve plate is an elastic member.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The one-way valve, the stop valve, the spring, and the first sealing ring work together to prevent the two joints from being disconnected after the hot test, thereby preventing fuel leakage.

[0020] (2) By opening a pressure relief hole on the stop valve, the fuel can be discharged and the pressure can be relieved when the fuel returns to the tank quickly to form a reverse high pressure.

[0021] (3) The one-way valve and the stop valve are combined into one quick-connect connector, saving space and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A cross-sectional view of an existing structure of a novel valve assembly quick-connect connector provided by the present invention, in an unassembled state;

[0023] Figure 2 A cross-sectional view of an existing structure of a novel valve assembly quick-connect connector provided by the present invention, showing the connector in an assembled state;

[0024] Figure 3 This is the appearance diagram of a new type of valve assembly quick-connect connector;

[0025] Figure 4 For the three-dimensional stop valve Figure 1 ;

[0026] Figure 5 For the three-dimensional stop valve Figure 2 ;

[0027] Figure 6 It is the front view of the stop valve;

[0028] Figure 7 It is the right view of the stop valve;

[0029] Figure 8 The three-dimensional one-way valve Figure 1 ;

[0030] Fig. 9 The three-dimensional one-way valve Figure 2 ;

[0031] Fig.10 A cross-sectional view of a one-way valve.

[0032] Description of symbols

[0033] Housing 1 Second sealing ring 2

[0034] Sealing ring 3 Isolation ring 4

[0035] First sealing ring 5 Isolation ring 6

[0036] Stop valve 7 Pressure relief hole 71

[0037] Limiting hole 72 Conducting hole 73

[0038] Import 74 Export 75

[0039] Annular groove 76 Check valve 8

[0040] One-way valve plate 81 Middle opening 811

[0041] Hollow extension 812 Fixing cap 8121

[0042] Check valve bracket 82 valve seat 821

[0043] Clamping part 822 Clamping claw 8221

[0044] Hook 8221a Spring 9 DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present invention clearer, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only used for illustrative purposes and cannot be understood as a limitation of this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0047] like Figure 1 , Figure 3 As shown, it shows a new type of valve assembly quick-plug connector provided by the present invention. Figure 1 As shown, the novel valve assembly quick-plug connector includes a housing 1, in which a valve body chamber and a spring chamber are formed in communication. A stop valve 7, a sealing ring 3, a first sealing ring 5, a second sealing ring 2, an isolating ring 4, an isolating ring 6, and a one-way valve 8 are arranged in the valve body chamber.

[0048] like Figure 4 , Figure 5 As shown, the stop valve 7 has an inlet 74 and an outlet 75, and a passage is formed between the inlet 74 and the outlet 75. Figure 6 As shown, a pressure relief hole 71 connected to the channel is provided on the side of the stop valve 7. Figure 7 As shown, the outlet 75 is a plane, a limiting hole 72 is opened in the middle of the plane, and the limiting hole 72 is evenly distributed with conducting holes 73 around it. Figure 5 , Figure 6 As shown, the outer wall of the stop valve 7 is provided with an annular groove 76. Figure 1 , Figure 2As shown, the sealing ring 3 is sleeved at the inlet 74 of the stop valve 7, so that it plays a buffering role during the assembly of the two joints and makes the sealing of the two joints better when they are in contact. 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.

[0049] like Figure 8 , Fig. 9 As shown, the one-way valve 8 may include a one-way valve plate 81 and a one-way valve bracket 82. The one-way valve plate 81 may cover the conducting hole 73. The one-way valve plate 81 may be made of fluorosilicone rubber, which may better fit the stop valve 7 when deformed to achieve the best sealing effect. Fig.10 As shown, the one-way valve disc 81 is away from the middle opening 811 on one side of the one-way 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 the end. The fixing cap 8121 is installed and fixed to the limiting hole 72. The hollow extension portion 812 can also be fixed to the limiting hole 72 by sleeve-arranging an annular ring, so as to limit the radial movement of the one-way valve disc 81. The one-way valve bracket 82 includes a valve seat 821 and a clamping portion 822. There is a cylindrical protruding shaft in the middle of the front side of the valve seat 821 for cooperating with the hollow extension portion 812 of the one-way valve disc 81. The clamping portion 822 has three claws 8221 evenly distributed around the outer edge of the valve seat 821. Figure 1 As shown, the end of the claw 8221 forms a hook 8221a fixed in the annular groove 76 of the stop valve 7, and the one-way valve bracket 82 is provided to prevent the one-way valve plate 81 from falling off when the liquid pressure is too high. The one-way valve plate 81 axially moves between the end of the stop valve 7 and the front side of the valve seat 821.

[0050] like Figure 1 As shown, a spring 9 is placed in the spring chamber. 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.

[0051] like Figure 1 As shown, the first sealing ring 5 and the second sealing ring 2 are arranged in the valve body chamber and fixed on the housing 1. The second sealing ring 2 is made of fluorosilicone rubber, and the first sealing ring 5 is made of fluororubber. Fluororubber has better oil resistance, and fluorosilicone rubber has better low temperature resistance. Using two sealing rings of different materials at the same time can meet the oil resistance and low temperature resistance requirements of actual working conditions. An isolation ring 4 is installed between the second sealing ring 2 and the first sealing ring 5 to isolate the sealing ring 2 and the sealing ring 5 so that the two sealing rings are not easily displaced. An isolation ring 6 is installed between the first sealing ring 5 and the one-way valve bracket 82 to prevent the one-way valve bracket 82 from contacting the first sealing ring 5 and causing the first sealing ring 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 position of the pressure relief hole 71 is near the isolation ring 4.

[0052] When assembling the male and female connectors, Figure 2 As shown, the male connector is inserted into the female connector (new valve assembly quick-insert connector). During the insertion process, the male connector contacts the sealing ring 3, enters the valve body chamber, and then gradually forms a seal with the second sealing ring 2 and the first sealing ring 5. At the same time, the stop valve 7 and the one-way valve 8 move forward, and then compress the spring 9 through the one-way valve bracket 82. The male connector forms a seal with the sealing ring 3, and the liquid enters the stop valve 7 through the male connector, flows out through the guide hole 73, and pushes the one-way valve plate 81 by the liquid pressure. The one-way valve plate 81 opens, and the liquid flows into the spring chamber. At this time, the pressure relief hole 71 on the stop valve 7 moves from the vicinity of the isolation ring 4 to the spring chamber.

[0053] After the liquid stops flowing in, the inlet pressure decreases or disappears, and the one-way valve plate 81 is in close contact with the stop valve 7 under the action of negative pressure or liquid pressure, thereby achieving the purpose of sealing and realizing reverse cutoff. The liquid cannot flow out through the conducting hole 73, and the reflux liquid can flow into the pressure relief hole 71 through the gap between the stop valve 7 and the shell 1, and then flow out through the male joint, thereby playing the role of pressure relief.

[0054] When the male connector is pulled out, the spring 9 is reset and the stop valve 7 is pushed back to the starting position. At this time, the one-way valve plate 81 remains in a closed state under the action of liquid pressure. At the same time, the stop valve 7 and the first sealing ring 5 form a sealing surface, and the liquid cannot flow out through the pressure relief hole 71, thereby realizing the stop function.

[0055] The above-mentioned embodiments merely express the implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. Any technical solution obtained in the form of equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A new type of valve assembly quick connector, characterized in that: include: A housing, wherein a valve body chamber and a spring chamber are formed in the housing; A stop valve, the stop valve is arranged in the valve body chamber, the stop valve has an inlet and an outlet, the inlet and the outlet are connected to form a channel; a first sealing ring, the first sealing ring being arranged in the valve body cavity and being in contact with the stop valve when the joint is not assembled; a one-way valve, the one-way valve being disposed in the valve body chamber, the one-way valve having a one-way valve plate, the one-way valve plate being slidably disposed on one side of the outlet to open or cover the outlet; and A spring, wherein the spring is disposed in the spring chamber, one end of the spring is fixed to the housing, the other end of the spring abuts against the one-way valve or the stop valve when the spring is deformed, and the stop valve is driven to reset when the spring is reset; A pressure relief hole connected to the channel is formed on the side of the stop valve, and the distance between the pressure relief hole and the inlet is smaller than the distance between the first sealing ring and the inlet.

2. A novel valve assembly quick-connect connector as claimed in claim 1, characterized in that: The outer wall of the stop valve is provided with an annular groove, the one-way valve disc has a hollow extension portion, the one-way valve also has a one-way valve bracket, the one-way valve bracket includes a valve seat and a clamping portion, a cylindrical protruding shaft is provided in the middle position of the front side of the valve seat and cooperates with the hollow extension portion, the clamping portion has a plurality of claws which are evenly distributed around the outer edge of the valve seat, the ends of the claws are fixed in the annular groove, the one-way valve disc moves axially between the end of the stop valve and the front side of the valve seat, and one end of the spring abuts against the rear side of the valve seat.

3. A novel valve assembly quick-connect connector as claimed in claim 2, characterized in that: The outlet is a plane, a limiting hole and a conducting hole are provided on the plane, the hollow extension portion is radially fixed to the limiting hole, and the one-way valve sheet can cover the conducting hole.

4. A novel valve assembly quick-connect connector as claimed in any one of claims 1 to 3, characterized in that: The inlet sleeve is provided with a sealing ring.

5. A novel valve assembly quick-connect connector as claimed in any one of claims 1 to 3, characterized in that: A second sealing ring is provided in the valve body chamber, the second sealing ring is fixed on the shell and close to the entrance of the valve body chamber, 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.

6. A novel valve assembly quick-connect connector as claimed in claim 2 or 3, characterized in that: An isolation ring is installed between the first sealing ring and the one-way valve bracket.

7. A novel valve assembly quick-connect connector as claimed in claim 3, characterized in that: There are a plurality of conducting holes which are evenly distributed around the limiting hole.

8. A novel valve assembly quick-connect connector as claimed in any one of claims 1 to 3, characterized in that: The one-way valve sheet is an elastic member.