Hydraulic self-sealing quick disconnect

Abstract

The utility model discloses a kind of hydraulic self-sealing quick-release joints, it is related to quick-release joint technical field, including joint body, the joint body includes sub and parent, the sub and parent are all including pipe connecting section, the other end of pipe connecting section in both ends is all threadedly connected with plug section, the other end of plug section in both ends is respectively threadedly connected with plug-in section and socket section, limiting mechanism is arranged between plug-in section, socket section and corresponding pipe connecting section.The joint body provided by the utility model is based on realizing self-filtering to avoid the sealing effect of plug affected by impurity blockage, while facilitating disassembly separation to maintain and replace the plug of inner side portion, thereby solving the problem that existing self-sealing quick-release joint causes sealing to drop, leakage and other adverse effects due to missing filter mechanism leading to impurity erosion plug, and disassembly inconveniently increases maintenance cost and downtime.

Description

Technical Field

[0001] This utility model relates to the field of quick-release coupling technology, specifically to a hydraulic self-sealing quick-release coupling. Background Technology

[0002] Hydraulic self-sealing quick-release couplings are components used to quickly connect or disconnect pipelines in hydraulic systems. Their core feature is that they can automatically seal the oil circuit during connection and disconnection to prevent hydraulic oil leakage, while enabling rapid operation. They are widely used in engineering machinery, agricultural machinery, hydraulic equipment maintenance, and other scenarios, and can significantly improve pipeline disassembly and assembly efficiency, reduce oil waste and environmental pollution.

[0003] A search revealed the following publication (announcement) number: CN201944457U, titled: Self-Sealing Joint. It includes a female joint and a male joint. The movable nut on the female joint is threaded into the base of the male joint. The female joint contains an automatically resetting spring. This utility model offers excellent sealing performance and convenient maintenance. When the joint is disconnected, it automatically seals the pipeline, preventing gas or liquid leakage or external gas from entering the pipeline and contaminating the system's medium. It also prevents contamination of the system's gas during maintenance, thus significantly reducing maintenance costs.

[0004] The above technical solution has the following shortcomings;

[0005] In the aforementioned solution, during the operation of the hydraulic system, impurities such as metal shavings and dust particles inevitably mix into the hydraulic oil. Existing self-sealing joints, lacking an effective filtration mechanism, cannot intercept these impurities. After long-term use, a large amount of impurities flow into the joint with the hydraulic oil, continuously impacting and eroding key components. In particular, this causes wear and scratches on the surface of the plug, resulting in a significant decrease in its sealing performance, leading to hydraulic oil leakage. This seriously affects the normal operation of the system, reduces work efficiency, and is extremely inconvenient to disassemble. When the internal plug mechanism experiences poor sealing or other malfunctions due to impurities, maintenance personnel cannot quickly and smoothly disassemble it for replacement and repair. The complex disassembly process not only consumes a lot of manpower and time but may also accidentally damage other components during disassembly, further increasing maintenance costs and system downtime, and adversely affecting production operations. Utility Model Content

[0006] In view of the problems existing in the current hydraulic self-sealing quick-release connector, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a hydraulic self-sealing quick-release connector, which solves the problems of existing self-sealing quick-release connectors that lack a filter mechanism, leading to impurities corroding and clogging the connector, causing poor sealing and leakage, and the inconvenience of disassembly, which increases maintenance costs and downtime.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A hydraulic self-sealing quick-release connector includes a connector body, which includes a sub-body and a main body. Both the sub-body and the main body include a pipe connection section. The other end of each pipe connection section is threaded with a plug section. The other end of each plug section is threaded with a plug section and a socket section, respectively. A limit mechanism is provided between the plug section, the socket section and the corresponding pipe connection section.

[0010] One end of the plug segment is fixedly connected to a stepped clamp tube, and one end of the socket segment has a stepped clamp groove. A threaded connecting sleeve is slidably fitted onto the wall of the socket segment. Stepped plug grooves are provided in the cavities of the other ends of both the plug segment and the socket segment. An anti-loosening mechanism is provided between the plug segment and the threaded connecting sleeve. A spring plug device is slidably connected to the inner sidewall of one end of the plug segments at both ends through an opening. A filter cover is fixedly connected to the inner sidewall of one end of the plug segments at both ends. Multiple flow ports are provided on the inner sidewall of the plug segments at both ends.

[0011] Preferably, the limiting mechanism includes a U-shaped limiting seat, a U-shaped rotating seat, a rotating limiting plate, a threaded limiting hole, and a limiting screw. Both ends of the pipe connection section are fixedly connected to U-shaped limiting seats, and both ends of the plug section and socket section are fixedly connected to U-shaped rotating seats. A rotating limiting plate is rotatably connected between the side walls of the two U-shaped rotating seats. Each rotating limiting plate engages with a corresponding U-shaped limiting seat. Each rotating limiting plate and its corresponding U-shaped limiting seat side wall are provided with a threaded limiting hole, and a limiting screw is threadedly connected to it.

[0012] Preferably, the anti-loosening mechanism includes a connecting chamber, a locking rod, a first spring, and a socket. The connecting chamber is fixedly connected to the side wall of the socket segment, the locking rod is slidably connected inside the cavity of the connecting chamber, the first spring is fixedly connected to the side wall of the locking rod, the socket is fixedly connected to the side wall of the plug segment, and the locking rod is inserted into the socket.

[0013] Preferably, both ends of the spring plug device include a limiting sliding rod, one end of which is fixedly connected to a stepped plug, and a second spring is sleeved on the rod wall of the limiting sliding rod.

[0014] Preferably, the side wall of the connecting compartment is provided with an adjusting groove, and each groove is slidably connected to an operating push block, the side wall of the operating push block being fixedly connected to the rod wall of the locking rod.

[0015] Furthermore, both the stepped clamp tube and the stepped plug are stepped nitrile rubber bodies.

[0016] Preferably, the cavity of the daughter body and the mother body is provided with a polytetrafluoroethylene coating, and the surface of the daughter body and the mother body is provided with a zinc-nickel alloy plating.

[0017] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0018] 1. This utility model utilizes the rotation limit plate of the set limit mechanism to engage with the U-shaped limit seat, and locks it with the limit screw to prevent relative rotation of the plug section, socket section and pipe connection section. The locking rod of the set anti-loosening mechanism is inserted into the socket under the action of the first spring to prevent the threaded connection sleeve from loosening and ensure reliable connection.

[0019] 2. This utility model utilizes a stepped clamp tube and a stepped clamp groove for initial sealing. When the spring plug device is disconnected, the second spring pushes the stepped plug into the stepped plug groove to achieve self-sealing. The filter cover filters impurities to prevent corrosion of the plug and ensure long-term stable sealing performance.

[0020] 3. This utility model utilizes the operation push block to slide along the adjustment groove to quickly unlock the anti-loosening mechanism, which is convenient for disassembly and assembly. The polytetrafluoroethylene coating inside the male and female bodies provides corrosion protection and reduces adhesion, while the zinc-nickel alloy plating on the surface prevents rust, extending the service life of the joint and adapting to harsh environments. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic side sectional view of the parent body of this utility model;

[0024] Figure 3 This is a schematic side sectional view of the sub-body of this utility model;

[0025] Figure 4 This is a three-dimensional schematic diagram of the filter cover of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Connector body; 2. Sub-body; 3. Main body; 4. Pipe connection section; 5. Plug section; 6. Plug section; 7. Socket section; 8. Stepped clamp tube; 9. Stepped clamp groove; 10. Threaded connection sleeve; 11. Stepped plug groove; 12. Spring plug device; 13. Filter cover; 14. Flow port; 15. U-shaped limit seat; 16. U-shaped rotating seat; 17. Rotation limit plate; 18. Threaded limit hole; 19. Limiting screw; 20. Connecting compartment; 21. Locking rod; 22. First spring; 23. Socket; 24. Limiting sliding rod; 25. Stepped plug; 26. Second spring; 27. Adjusting groove; 28. Operating push block. Detailed Implementation

[0028] 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.

[0029] This utility model discloses a hydraulic self-sealing quick-release connector.

[0030] This utility model provides, for example Figure 1-4 The hydraulic self-sealing quick-release connector shown includes a connector body 1, which includes a sub-body 2 and a mother body 3. Both the sub-body 2 and the mother body 3 include a pipe connection section 4. The other end of each pipe connection section 4 is threadedly connected to a plug section 5. The other end of each plug section 5 is threadedly connected to a plug section 6 and a socket section 7, respectively. A limit mechanism is provided between the plug section 6, the socket section 7 and the corresponding pipe connection section 4.

[0031] One end of the plug segment 6 is fixedly connected to a stepped clamp tube 8. One end of the socket segment 7 has a stepped clamp groove 9. A threaded connecting sleeve 10 is slidably fitted onto the wall of the socket segment 7. Stepped plug grooves 11 are provided in the cavities of both the plug segment 6 and the socket segment 7. An anti-loosening mechanism is provided between the plug segment 6 and the threaded connecting sleeve 10. A spring plug device 12 is slidably connected to the inner side wall of one end of the end plug segment 5 through an opening. A filter cover 13 is fixedly connected to the inner side wall of one end of the end plug segment 5. Multiple flow ports 14 are provided on the inner side wall of the end plug segment 5. The hydraulic pipeline is quickly connected and disconnected by using the connector body 1 through the cooperation of the daughter body 2 and the mother body 3. The pipe connection segment 4 is used to connect external pipelines. The plug segment 5 provides installation space for the spring plug device 12. The threaded connection facilitates the disassembly of each component. The replacement mechanism uses a limiting mechanism to prevent relative rotation between the plug section 6, socket section 7, and pipe connection section 4, ensuring connection stability. The stepped clamp tube 8 and stepped clamp groove 9 work together to achieve initial sealing connection between the female body 2 and the female body 3. The threaded connection sleeve 10 can further lock the two together. The spring plug device 12 embeds into the stepped plug groove 11 when the joint is disconnected to achieve self-sealing and prevent media leakage. The filter cover 13 filters impurities in the hydraulic medium to prevent impurities from corroding the plug and affecting the seal. The flow port 14 ensures smooth flow of the hydraulic medium. This solves the problems of existing self-sealing quick-release joints that lack a filtering mechanism, leading to impurities corroding the plug and causing poor sealing and leakage, as well as the inconvenience of disassembly, which increases maintenance costs and downtime.

[0032] To prevent relative rotation between the plug section, socket section, and pipe connection section, and to ensure a secure connection, such as Figure 1-3 As shown, the limiting mechanism includes a U-shaped limiting seat 15, a U-shaped rotating seat 16, a rotating limiting plate 17, a threaded limiting hole 18, and a limiting screw 19. The U-shaped limiting seats 15 are fixedly connected to the side walls of both ends of the pipe connection section 4. The U-shaped rotating seats 16 are fixedly connected to the side walls of both ends of the plug section 6 and the socket section 7. A rotating limiting plate 17 is rotatably connected between the side walls of the two U-shaped rotating seats 16. Each rotating limiting plate 17 engages with its corresponding U-shaped limiting seat 15. Each rotating limiting plate 17 and its corresponding U-shaped limiting seat 15 side wall are provided with a threaded limiting hole 18, and a limiting screw 19 is threadedly connected thereto. By utilizing the rotating limiting plate 17 to rotate around the U-shaped rotating seat 16 and engage with it, and by cooperating with the limiting screw 19 passing through the threaded limiting hole 18 to lock it in place, the relative rotation of the plug section 6, socket section 7, and pipe connection section 4 can be limited, preventing loosening of the threaded connection and improving the overall connection stability.

[0033] To prevent the threaded connection sleeve from loosening and to enhance the anti-loosening effect of the connection between the female and male parts, such as... Figure 1 and 2As shown, the anti-loosening mechanism includes a connecting chamber 20, a locking rod 21, a first spring 22, and a socket 23. The connecting chamber 20 is fixedly connected to the side wall of the socket section 7. The locking rod 21 is slidably connected inside the cavity of the connecting chamber 20. The first spring 22 is fixedly connected to the side wall of the locking rod 21. The socket 23 is fixedly connected to the side wall of the plug section 6. The locking rod 21 is inserted into the socket 23. The first spring 22 pushes the locking rod 21 into the socket 23, locking the threaded connecting sleeve 10 and the plug section 6. This prevents the threaded connecting sleeve 10 from loosening under vibration, ensuring a reliable connection between the sub-body 2 and the mother body 3, and preventing accidental disconnection.

[0034] To achieve self-sealing when the joint is disconnected and prevent media leakage, such as Figure 2 and 3 As shown, both ends of the spring plug device 12 include a limiting sliding rod 24. One end of the limiting sliding rod 24 is fixedly connected to a stepped plug 25. A second spring 26 is sleeved on the rod wall of the limiting sliding rod 24. When the joint is connected, the stepped clamp tube 8 pushes the stepped plug 25 to compress the second spring 26, allowing the medium to flow. When disconnected, the second spring 26 resets and pushes the stepped plug 25 into the stepped plug groove 11, achieving rapid self-sealing and avoiding waste and safety hazards caused by hydraulic medium leakage.

[0035] To facilitate operation of the locking lever and achieve quick unlocking of the anti-loosening mechanism, such as Figure 1 and 2 As shown, the side wall of the connecting compartment 20 is provided with an adjustment groove 27, and an operation push block 28 is slidably connected to it. The side wall of the operation push block 28 is fixedly connected to the rod wall of the locking rod 21. By using the operation push block 28 to slide along the adjustment groove 27, the locking rod 21 can be driven to compress the first spring 22 and disengage from the socket 23, quickly releasing the anti-loosening lock, which facilitates the disassembly of the sub-body 2 and the mother body 3 and improves the ease of operation.

[0036] To improve the sealing performance and wear resistance of stepped clamp tubes and stepped plugs, such as Figure 2 and 3 As shown, both the stepped clamp tube 8 and the stepped plug 25 are stepped nitrile rubber bodies. The nitrile rubber has good oil resistance and elasticity. The stepped design makes the sealing surface fit more tightly, improving the sealing effect. At the same time, the rubber material can reduce wear during docking and extend service life.

[0037] To improve the corrosion resistance and service life of the joint, such as Figure 1-3As shown, the cavity of the daughter body 2 and the mother body 3 is coated with polytetrafluoroethylene, and the surface of the daughter body 2 and the mother body 3 is coated with zinc-nickel alloy. The polytetrafluoroethylene coating has excellent corrosion resistance and non-stick properties, which can prevent the hydraulic medium from corroding the cavity surface and reduce the adhesion of impurities. The zinc-nickel alloy coating enhances the rust resistance of the joint surface, adapts to harsh environments such as humidity, and extends the overall service life.

[0038] 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 hydraulic self-sealing quick-release connector, comprising a connector body (1), characterized in that, The connector body (1) includes a daughter body (2) and a mother body (3). Both the daughter body (2) and the mother body (3) include a pipe connection section (4). The other end of the pipe connection section (4) at both ends is threaded with a plug section (5). The other end of the plug section (5) at both ends is threaded with a plug section (6) and a socket section (7) respectively. A limit mechanism is provided between the plug section (6), the socket section (7) and the corresponding pipe connection section (4). One end of the plug segment (6) is fixedly connected to a stepped clamp tube (8), and one end of the socket segment (7) is provided with a stepped clamp groove (9). The wall of the socket segment (7) is slidably fitted with a threaded connecting sleeve (10). The other end of the plug segment (6) and the socket segment (7) are both provided with stepped plug grooves (11). An anti-loosening mechanism is provided between the plug segment (6) and the threaded connecting sleeve (10). One end of the inner wall of the plug segment (5) at both ends is slidably connected with a spring plug device (12) through an opening. One end of the inner wall of the plug segment (5) at both ends is fixedly connected with a filter cover (13). The inner wall of the plug segment (5) at both ends is provided with multiple flow ports (14).

2. The hydraulic self-sealing quick-release connector according to claim 1, characterized in that, The limiting mechanism includes a U-shaped limiting seat (15), a U-shaped rotating seat (16), a rotating limiting plate (17), a threaded limiting hole (18), and a limiting screw (19). The side walls of both ends of the pipe connecting section (4) are fixedly connected to the U-shaped limiting seat (15). The side walls of both ends of the plug section (6) and the socket section (7) are fixedly connected to the U-shaped rotating seat (16). The side walls of the U-shaped rotating seats (16) at both ends are rotatably connected to the rotating limiting plate (17). Each rotating limiting plate (17) is engaged with the corresponding U-shaped limiting seat (15). Each rotating limiting plate (17) and the side wall of the corresponding U-shaped limiting seat (15) are provided with a threaded limiting hole (18), and a limiting screw (19) is threadedly connected to it.

3. A hydraulic self-sealing quick-release connector according to claim 1, characterized in that, The anti-loosening mechanism includes a connecting chamber (20), a locking rod (21), a first spring (22), and a socket (23). The connecting chamber (20) is fixedly connected to the side wall of the socket section (7). The locking rod (21) is slidably connected inside the cavity of the connecting chamber (20). The first spring (22) is fixedly connected to the side wall of the locking rod (21). The socket (23) is fixedly connected to the side wall of the plug section (6). The locking rod (21) is inserted into the socket (23).

4. A hydraulic self-sealing quick-release connector according to claim 1, characterized in that, Both ends of the spring plug device (12) include a limiting sliding rod (24), one end of the limiting sliding rod (24) is fixedly connected to a stepped plug (25), and the rod wall of the limiting sliding rod (24) is sleeved with a second spring (26).

5. A hydraulic self-sealing quick-release connector according to claim 3, characterized in that, The side wall of the connecting compartment (20) is provided with an adjustment groove (27), and each groove is slidably connected with an operating push block (28). The side wall of the operating push block (28) is fixedly connected to the rod wall of the locking rod (21).

6. A hydraulic self-sealing quick-release coupling according to claim 1, characterized in that, Both the stepped clamp tube (8) and the stepped plug (25) are stepped nitrile rubber bodies.

7. A hydraulic self-sealing quick-release connector according to claim 1, characterized in that, The cavity of the daughter body (2) and the mother body (3) is provided with a polytetrafluoroethylene coating, and the surface of the daughter body (2) and the mother body (3) is provided with a zinc-nickel alloy plating.

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