Dual seal semi-automatic lock type fluid quick coupling

Abstract

The utility model discloses a double -sealed semi -automatic locking type fluid quick -plug connector relates to fluid connection technical field, including female end valve seat and male end valve seat, the male end valve seat is inserted and is installed in the middle part of one end of female end valve seat, the female end valve seat's inside thread is installed with female end cavity, the utility model discloses the synergistic effect of female end valve seat, male end valve seat, female end cavity, slide lock steel ball, male end cavity and U type limiting slot has realized the automatic locking of fluid quick -plug connector and convenient dismouting, when male end valve seat inserts female end valve seat, the slide lock steel ball on female end cavity will fall into the U type limiting slot of male end cavity outer surface, and the locking is automatically completed, need not with the help spanner, forceps and so on tool, has simplified the operation procedure, has saved the installation time, when needing to dismount, just need to move slide cover shell to right, can realize quick unlocking, this design has improved installation efficiency greatly, especially applicable to high -frequency dismounting scene.

Description

Technical Field

[0001] This utility model relates to the field of fluid connection technology, specifically to a double-sealed semi-automatic locking fluid quick-connect coupling. Background Technology

[0002] In daily life and production, it is often necessary to connect two fluid pipelines together. With the development of technology, there are more and more ways to connect fluid pipelines. Among them, fluid connectors are favored by many users. A fluid connector is a device specifically designed for transmitting fluid media such as gas, liquid or powder. Its core function is to realize the efficient transmission of gas, liquid or powder between different pipelines, equipment or systems through physical interfaces, while ensuring the sealing, stability and reliability of the transmission process.

[0003] Existing fluid connectors require tools such as wrenches and pliers to connect or disconnect during use, which is a complex and time-consuming process that affects installation efficiency, especially in high-frequency disassembly and assembly scenarios. Utility Model Content

[0004] The purpose of this invention is to provide a double-sealed semi-automatic locking fluid quick-connect coupling to solve the problem that fluid connectors in the prior art are complex to assemble and disassemble and are time-consuming.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-sealed semi-automatic locking fluid quick-connect coupling, including a female valve seat and a male valve seat;

[0006] The male valve seat is inserted and installed at the middle of one end of the female valve seat;

[0007] The female valve seat has an internal threaded female cavity. The female cavity has multiple ball receiving slots on the outer surface away from the female valve seat. Each of the multiple ball receiving slots has a sliding lock ball installed inside. The male valve seat has an internal threaded male cavity. The male cavity has a U-shaped limiting groove in the middle of its outer surface. Each of the multiple sliding lock balls is engaged with the U-shaped limiting groove.

[0008] A sliding sleeve housing is fitted onto the outer surface of the female end cavity.

[0009] Furthermore, a female cavity sealing ring is installed at the connection between the female valve seat and the female cavity, a female valve stem seat is installed on the inner wall of the female valve seat, a valve stem body is threaded onto one end of the female valve stem seat, and a female valve stem head is threaded onto the outer surface of the valve stem body away from the female valve stem seat.

[0010] Furthermore, a female valve core spring is installed on the inner wall of the female valve stem seat. The female valve core spring is configured as a pagoda spring. A female valve core is installed on the other end of the female valve core spring away from the female valve stem seat, and the female valve core is engaged with the male cavity.

[0011] Furthermore, a first sealing ring is installed at the connection between the female valve core and the male cavity, a second sealing ring and a third sealing ring are embedded at the connection between the female cavity and the female valve core, and a female valve core sealing ring is embedded in the inner wall of the female valve core.

[0012] Furthermore, a sliding spring is installed at one end of the female valve seat. The sliding spring is sleeved on the outer surface of the female cavity and located inside the sliding sleeve housing. A limiting protrusion is provided in the middle of the inner wall of the sliding sleeve housing, and the limiting protrusion is engaged with the female cavity. A steel ball clearance groove is provided on the left side of the inner wall of the sliding sleeve housing.

[0013] Furthermore, a male end face sealing ring is installed on the left end of the male valve seat, a male cavity sealing ring is installed at the connection between the male valve seat and the male cavity, a male valve core spring is installed on the inner wall of the male valve seat, a male valve core is installed at the end of the male valve core spring away from the male valve seat, a male valve core sealing ring is embedded at the connection between the male cavity and the male valve core, and a guide cone surface is provided on the right side of the outer surface of the male cavity.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) This utility model achieves automatic locking and convenient disassembly and assembly of fluid quick connectors through the coordinated work of the female valve seat, male valve seat, female cavity, sliding lock steel ball, male cavity and U-shaped limiting groove. When the male valve seat is inserted into the female valve seat, the sliding lock steel ball on the female cavity will fall into the U-shaped limiting groove on the outer surface of the male cavity, and automatically complete the locking. There is no need to use tools such as wrenches and pliers, which simplifies the operation process and saves installation time. When disassembly is required, simply move the sliding sleeve shell to the right to achieve quick unlocking. This design greatly improves the installation efficiency and is especially suitable for high-frequency disassembly and assembly scenarios.

[0016] (2) This utility model can achieve a three-layer sealing structure through the coordinated work of the first sealing ring, the second sealing ring and the third sealing ring. The first sealing ring serves as the first layer to reduce the amount of liquid leakage in the connector, the second sealing ring serves as the second layer of sealing when the connector is inserted, and the third sealing ring serves as the third layer of reinforcing sealing. The multiple sealing rings achieve a highly reliable seal, greatly reducing the risk of leakage under sudden working conditions and improving the safety and reliability of fluid transmission. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 A structural cross-sectional view of the female valve seat is provided for an embodiment of this utility model;

[0020] Figure 3 A structural cross-sectional view of the male valve seat is provided for an embodiment of this utility model;

[0021] Figure 4 This is a cross-sectional view of the overall structure provided for an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Female valve seat; 2. Male valve seat; 3. Sliding sleeve housing; 4. Female cavity; 5. Female cavity sealing ring; 6. Female valve stem seat; 7. Valve stem body; 8. Female valve stem head; 9. Female valve core spring; 10. Female valve core; 11. Steel ball receiving groove; 12. Sliding lock steel ball; 13. First sealing ring; 14. Second sealing ring; 15. Third sealing ring; 16. Female valve core sealing ring; 17. Sliding sleeve spring; 18. Male end face sealing ring; 19. Male cavity; 20. Male cavity sealing ring; 21. Male valve core spring; 22. Male valve core; 23. Male valve core sealing ring; 24. U-shaped limiting groove. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] As attached Figure 1 To be continued Figure 4 As shown:

[0026] Example 1:

[0027] This utility model provides a double-sealed semi-automatic locking fluid quick-connect fitting, including a female valve seat 1 and a male valve seat 2;

[0028] The male valve seat 2 is inserted and installed at the middle of one end of the female valve seat 1;

[0029] The female valve seat 1 has a female cavity 4 installed on its internal thread. Multiple ball receiving grooves 11 are provided on the outer surface of the female cavity 4 away from the female valve seat 1. Each ball receiving groove 11 is equipped with a sliding lock ball 12. The male valve seat 2 has a male cavity 19 installed on its internal thread. A U-shaped limiting groove 24 is provided in the middle of the outer surface of the male cavity 19. Multiple sliding lock balls 12 are engaged with the U-shaped limiting groove 24. When locked, the sliding lock balls 12 are embedded in the U-shaped limiting groove 24 to achieve mechanical interlocking.

[0030] Sliding sleeve housing 3 is fitted onto the outer surface of the female end cavity 4;

[0031] A female cavity sealing ring 5 is installed at the connection between the female valve seat 1 and the female cavity 4 to prevent fluid leakage from the threaded connection between the female valve seat 1 and the female cavity 4. A female valve stem seat 6 is installed on the inner wall of the female valve seat 1. A valve stem body 7 is threaded on one end of the female valve stem seat 6. A female valve stem head 8 is threaded on the outer surface of the valve stem body 7 away from the female valve stem seat 6.

[0032] A female valve core spring 9 is installed on the inner wall of the female valve stem seat 6. The female valve core spring 9 is set as a pagoda spring so that the shape of the female valve core spring 9 matches the shape of the female valve core 10 and pushes the female valve core 10 to reset. The other end of the female valve core spring 9 away from the female valve stem seat 6 is equipped with the female valve core 10, and the female valve core 10 is engaged with the male cavity 19.

[0033] A male end face sealing ring 18 is installed on the left end of the male end valve seat 2. The outer diameter of the male end face sealing ring 18 matches the inner wall of the female end valve seat 1. A male cavity sealing ring 20 is installed at the connection between the male end valve seat 2 and the male end cavity 19 to prevent fluid leakage from the threaded connection between the male end valve seat 2 and the male end cavity 19. A male valve core spring 21 is installed on the inner wall of the male end valve seat 2. A male end valve core 22 is installed at the end of the male valve core spring 21 away from the male end valve seat 2. A male valve core sealing ring 23 is embedded at the connection between the male end cavity 19 and the male end valve core 22. A guide cone surface is provided on the right side of the outer surface of the male end cavity 19. The guide cone surface guides the male end and the female end to align during insertion, reducing the difficulty of operation and improving the insertion efficiency.

[0034] A sliding spring 17 is installed at one end of the female valve seat 1. The sliding spring 17 is sleeved on the outer surface of the female cavity 4 and located inside the sliding sleeve housing 3. A limiting protrusion is provided in the middle of the inner wall of the sliding sleeve housing 3, and the limiting protrusion is engaged with the female cavity 4, so that the female cavity 4 plays a limiting role on the sliding sleeve housing 3, limiting the sliding stroke of the sliding sleeve housing 3 and preventing the parts from falling off due to excessive operation. A steel ball clearance groove is provided on the left side of the inner wall of the sliding sleeve housing 3. When unlocking, the steel ball clearance groove provides radial movement space for the sliding lock steel ball 12, so that it is disengaged from the U-shaped limiting groove 24, realizing the separation of the male end and the female end.

[0035] Working principle: During the connection process, the guide cone face of the male valve seat 2 is first aligned with the inlet of the female valve seat 1, and an axial thrust is applied to insert the male end into the female end. During insertion, the outer surface of the male end cavity 19 presses against the sliding locking steel ball 12, and the steel ball contracts radially along the steel ball receiving groove 11. When the male end is fully inserted into the female end, the U-shaped limiting groove 24 moves to the position of the sliding locking steel ball 12. Under the action of the thrust, the sliding locking steel ball 12 is stuck into the U-shaped limiting groove 24. At the same time, the sliding sleeve outer shell 3 is in the sliding sleeve spring. Under the continuous action of spring 17, it continues to be pushed forward until the limiting protrusion of the sliding sleeve housing 3 engages with the female end cavity 4, and the steel ball clearance groove of the sliding sleeve housing 3 completely exceeds the center of the sliding lock steel ball 12, so that the sliding lock steel ball 12 is fully positioned and automatically locked. In this way, the female end valve seat 1 and the male end valve seat 2 can be quickly locked without the need for tools such as wrenches and pliers, simplifying the operation process and saving installation time. When disassembly is required, the sliding sleeve housing 3 is manually slid to the right. The compression of the sliding sleeve spring 17 causes the steel ball clearance groove on the inner wall of the sliding sleeve housing 3 to move to the position of the sliding lock steel ball 12. At this time, the male end cavity 19 is pushed out of the female end cavity 4 by the female end. During this process, the sliding lock steel ball 12 is no longer under force and is naturally pushed out by the U-shaped limiting groove 24 on the male end cavity 19, thus achieving quick unlocking. This design greatly improves the installation efficiency and is especially suitable for high-frequency disassembly and assembly scenarios. It realizes the automatic locking and convenient disassembly and assembly of the fluid quick connector. After disassembly, the female end valve core 10 reaches the limiting surface under the push of the female valve core spring 9, completes self-sealing, and blocks the steel ball receiving groove 11, which plays a role in positioning the sliding lock steel ball 12 and the sliding sleeve housing 3. Under the action of the male end valve core spring 21, the male end valve core 22 is in close contact with the male valve core sealing ring 23 to achieve internal dynamic sealing. Finally, the female end valve core 10 and the male end valve core 22 are reset under the action of the spring, automatically closing the fluid channel.

[0036] Example 2:

[0037] This embodiment is basically the same as the previous embodiment, except that a first sealing ring 13 is installed at the connection between the female valve core 10 and the male cavity 19. The first sealing ring 13 is a hydrogenated nitrile rubber O-ring, which has the characteristics of high pressure resistance, low leakage rate and long-term stability. A second sealing ring 14 and a third sealing ring 15 are embedded at the connection between the female cavity 4 and the female valve core 10. The second sealing ring 14 is a fluororubber O-ring, which has the characteristics of high elastic recovery rate, wear resistance and fatigue resistance. The third sealing ring 15 is an O-ring, which has the characteristics of ultra-low compression set, high pressure resistance and resistance to media aging. A female valve core sealing ring 16 is embedded in the inner wall of the female valve core 10. The female valve core sealing ring 16 maintains its fit with the inner wall of the female valve core 10 through elastic deformation, preventing fluid from leaking from the inside of the valve core to the outside.

[0038] Working principle: When the male valve seat 2 is inserted into the female valve seat 1, the first sealing ring 13 contacts the male cavity 19, forming a first-level seal at the initial contact surface between the female valve core 10 and the male cavity 19. This seal blocks most of the fluid medium, reduces the pressure load on subsequent seals, and effectively reduces the liquid leakage of the connector. The second sealing ring 14 serves as the second seal when the connector is inserted, and also as the second seal between the female valve core 10 and the female cavity 4. After the connector is inserted, i.e., the flow channel is fully connected and the sliding steel ball 12 is locked, the third sealing ring 15 replaces the second sealing ring 14 as the second seal. The second sealing ring 14 then becomes the third seal to strengthen the seal. Through multiple sealing rings, the connector achieves high-reliability sealing, greatly reducing the risk of leakage under sudden operating conditions and improving the safety and reliability of fluid transmission.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A double-sealed semi-automatic locking quick-connect fluid connector, characterized in that, include: Female valve seat (1) and male valve seat (2); The male valve seat (2) is inserted and installed at the middle of one end of the female valve seat (1); The female valve seat (1) has a female cavity (4) installed on its internal thread. The female cavity (4) has multiple ball receiving grooves (11) on its outer surface away from the female valve seat (1). Each of the multiple ball receiving grooves (11) has a sliding lock ball (12) installed inside. The male valve seat (2) has a male cavity (19) installed on its internal thread. The male cavity (19) has a U-shaped limiting groove (24) in the middle of its outer surface. Each of the multiple sliding lock balls (12) is engaged with the U-shaped limiting groove (24). The sliding sleeve housing (3) is fitted onto the outer surface of the female end cavity (4); The inner wall of the female end valve seat (1) is fitted with a female end valve stem valve seat (6). A female valve core spring (9) is installed on the inner wall of the female valve stem seat (6). The female valve core spring (9) is set as a pagoda spring. A female valve core (10) is installed on the other end of the female valve core spring (9) away from the female valve stem seat (6), and the female valve core (10) is engaged with the male end cavity (19). A first sealing ring (13) is installed at the connection between the female end valve core (10) and the male end cavity (19). A second sealing ring (14) and a third sealing ring (15) are embedded at the connection between the female end cavity (4) and the female end valve core (10). A female valve core sealing ring (16) is embedded in the inner wall of the female end valve core (10). A sliding spring (17) is installed at one end of the female valve seat (1). The sliding spring (17) is sleeved on the outer surface of the female cavity (4) and located inside the sliding sleeve housing (3). A steel ball clearance groove is provided on the left side of the inner wall of the sliding sleeve housing (3).

2. The double-sealed semi-automatic locking quick-connect fluid connector according to claim 1, characterized in that, A female cavity sealing ring (5) is installed at the connection between the female end valve seat (1) and the female end cavity (4). A valve stem body (7) is threaded onto one end of the female end valve stem seat (6). A female end valve stem valve head (8) is threaded onto the outer surface of the valve stem body (7) away from the female end valve stem seat (6).

3. The double-sealed semi-automatic locking quick-connect fluid connector according to claim 1, characterized in that, The inner wall of the sliding sleeve housing (3) is provided with a limiting protrusion, and the limiting protrusion is engaged with the female end cavity (4).

4. The double-sealed semi-automatic locking quick-connect fluid connector according to claim 1, characterized in that, A male end face sealing ring (18) is installed on the left end of the male end valve seat (2), a male cavity sealing ring (20) is installed at the connection between the male end valve seat (2) and the male end cavity (19), a male valve core spring (21) is installed on the inner wall of the male end valve seat (2), a male end valve core (22) is installed at the end of the male valve core spring (21) away from the male end valve seat (2), a male valve core sealing ring (23) is embedded at the connection between the male end cavity (19) and the male end valve core (22), and a guide cone surface is provided on the right side of the outer surface of the male end cavity (19).

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