Plug-in structure and quick-release valve

Abstract

A plug-in structure and a quick-release valve. The plug-in structure comprises a first pipe joint (12), a second pipe joint (22) and a plug-in unit, wherein the plug-in unit is configured to axially limit the first pipe joint (12) and the second pipe joint (22) to connect a first component (1) and a second component (2) when the second pipe joint (22) extends into the first pipe joint (12); and the plug-in unit comprises a limiting groove (31), an insertion hole (32) and a pin (33), the insertion hole (32) being formed in the first pipe joint (12) and running through the inner wall of the first pipe joint (12), the limiting groove (31) being formed in the outer wall of the second pipe joint (22), and the pin (33) passing through the insertion hole (32) and being limited in the limiting groove (31).

Description

Plug-in structure and quick-install valve

[0001] This application claims priority to Chinese Patent Application No. 202422518318.0, filed on October 18, 2024, China Patent Office; Chinese Patent Application No. 202422910930.2, filed on November 28, 2024, China Patent Office; Chinese Patent Application No. 202422911246.6, filed on November 21, 2024, China Patent Office; and Chinese Patent Application No. 202422844, filed on November 21, 2024, China Patent Office. Priority to Chinese Patent Application No. 575.3, filed on January 21, 2025, China Patent Application No. 202520135601.7, filed on October 18, 2024, China Patent Application No. 202422518584.3, and filed on March 5, 2025, China Patent Application No. 202520370960.0, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of pipeline connection technology, such as a plug-in structure and quick-install valve that can be assembled quickly. Background Technology

[0003] While threaded connections are common in pipeline connections, this method typically presents the following problems during assembly: 1) Cumbersome installation: To ensure a tight seal, PTFE tape is usually wrapped around the threaded connection. If the tape is too thick, the two pipes cannot be properly aligned; if it's too thin, leaks are likely. 2) Connecting two valves using threaded fittings involves threading both ends of the fitting to valves on both sides, creating two potential leak points and increasing the risk of leakage. 3) Low installation efficiency and inconvenient disassembly. Specifically, to ensure a tight fit, the above connection methods require the use of wrenches and other installation tools during actual installation. In practical use, the installation space for the entire pipeline is very compact. When installation space is limited, there is usually no room for disassembly between valves or between valves and pipes, which often increases the difficulty of installation, disassembly, and maintenance. Summary of the Invention

[0004] This application provides a plug-in structure and a quick-install valve to overcome the problems of cumbersome disassembly and assembly, low efficiency, relative rotation between valves, leakage during pipeline connection, and installation interference caused by valve rotation in related technologies.

[0005] This application provides a plug-in structure, including a first pipe connector, a second pipe connector, and a plug-in unit; wherein the first pipe connector is configured to be formed at one end of a first component, and the second pipe connector is configured to be formed at one end of a second component.

[0006] The insertion unit is configured to axially limit the first and second pipe connectors to connect the first component and the second component when the second pipe connector is inserted into the first pipe connector; the insertion unit includes a limiting groove, a insertion hole, and a pin, the insertion hole being opened in the first pipe connector and penetrating the inner wall of the first pipe connector; the limiting groove being opened in the outer wall of the second pipe connector, and the pin passing through the insertion hole and limited within the limiting groove.

[0007] This application provides a quick-install valve, including: a valve body and the plug-in structure located at both ends of the valve body. Attached Figure Description

[0008] Figure 1 is a three-dimensional structural diagram of a plug-in structure according to Embodiment 1.

[0009] Figure 2 is a schematic diagram of the axial cross-sectional structure in the AA direction of Figure 1.

[0010] Figure 3 is a cross-sectional structural diagram of the first component of Embodiment 1.

[0011] Figure 4 is a cross-sectional structural diagram of the second component of Embodiment 1.

[0012] Figure 5 is a schematic diagram of the radial cross-sectional structure in the BB direction of Figure 1.

[0013] Figure 6 is a cross-sectional view of the structure of Example 1 when the single pin is not inserted.

[0014] Figure 7 is a schematic diagram of the radial cross-sectional structure of Embodiment 2.

[0015] Figure 8 is a schematic diagram of the radial cross-sectional structure of Embodiment 3.

[0016] Figure 9 is a schematic diagram of the axial cross-sectional structure of Embodiment 4.

[0017] Figure 10 is a schematic diagram of the axial cross-sectional structure of Embodiment 5.

[0018] Figure 11 is a schematic diagram of the axial cross-sectional structure of Embodiment 6.

[0019] Figure 12 is a three-dimensional structural diagram of the plug-in structure of Embodiment 7.

[0020] Figure 13 is a schematic cross-sectional view of the first and second pipe joints in the disassembled state in Embodiment 7.

[0021] Figure 14 is a schematic cross-sectional view of the first and second pipe joints in the mating state in Embodiment 7.

[0022] Figure 15 is a schematic diagram of the radial cross-sectional structure of the plug-in structure in Embodiment 7.

[0023] Figure 16 is a schematic diagram of the radial cross-sectional structure of the first pipe joint in Embodiment 7.

[0024] Figure 17 is a structural schematic diagram of the first and second pipe joints in the disassembled state in Embodiment 8.

[0025] Figure 18 is a structural schematic diagram of the first and second pipe joints in the mating state in Embodiment 8.

[0026] Figure 19 is a three-dimensional structural diagram of the plug-in structure of Embodiment 9.

[0027] Figure 20 is a schematic diagram of the radial cross-sectional structure of the first pipe joint in Embodiment 9.

[0028] Figure 21 is a schematic diagram of the radial cross-sectional structure of the first and second pipe joints in the assembled state in Embodiment 9.

[0029] Figure 22 is a three-dimensional structural diagram of the pin in Embodiment 9.

[0030] Figure 23 is a schematic diagram of the radial cross-sectional structure of the plug-in structure in Embodiment 10.

[0031] Figure 24 is a three-dimensional structural diagram of the pin in Embodiment 10.

[0032] Figure 25 is a three-dimensional structural diagram of another type of pin in Embodiment 10.

[0033] Figure 26 is a schematic diagram of the plug-in structure in Embodiment Eleven;

[0034] Figure 27 is a partial structural schematic diagram of the first valve in Embodiment Eleven;

[0035] Figure 28 is a cross-sectional schematic diagram of the first valve in Embodiment Eleven;

[0036] Figure 29 is a schematic diagram of the structure of the second valve in Embodiment Eleven;

[0037] Figure 30 is a cross-sectional schematic diagram of the second valve in Example 11;

[0038] Figure 31 is a first cross-sectional schematic diagram (partial) of the plug-in structure of Embodiment Eleven;

[0039] Figure 32 is a second cross-sectional schematic diagram (partial) of the plug-in structure of Embodiment Eleven;

[0040] Figure 33 is a schematic diagram of the pin structure in Embodiment Eleven;

[0041] Figure 34 is a partial structural schematic diagram of the first valve in Embodiment Twelve;

[0042] Figure 35 is a partial cross-sectional view of the plug-in structure of Embodiment Twelve.

[0043] Figure 36 is a schematic diagram of the connection between the two valves in Embodiment Thirteen.

[0044] Figure 37 is a radial sectional view of the plug-in structure of Embodiment Thirteen.

[0045] Figure 38 is a schematic diagram of the structure of the second pipe joint in Embodiment Thirteen.

[0046] Figure 39 is a schematic diagram of the structure of the first pipe joint in Embodiment Thirteen.

[0047] Figure 40 is an axial sectional view of the plug-in structure of Embodiment Thirteen.

[0048] Figure 41 is a schematic diagram of another second pipe connector in Embodiment Thirteen.

[0049] Figure 42 is a structural schematic diagram of another first pipe connector in Embodiment Thirteen.

[0050] Figure 43 is an axial sectional view of another plug-in structure in Embodiment Thirteen.

[0051] Figure 44 is a structural schematic diagram of the quick-install valve in Example 15.

[0052] Figure 45 is a schematic diagram of the quick-install valve and pipeline connection in Example 15.

[0053] Figure 46 is a structural schematic diagram of the quick-install valve in Embodiment Sixteen.

[0054] Figure 47 is a structural schematic diagram of the quick-install valve in Example 17.

[0055] Figure 48 is a structural schematic diagram of the quick-install valve in Example 18.

[0056] Figure 49 is an exploded view of the quick-install valve of Example 18.

[0057] Figure 50 is a first cross-sectional view of the quick-install valve of Embodiment 18.

[0058] Figure 51 is a second sectional view of the quick-install valve of Embodiment 18.

[0059] Figure 52 is an exploded view of the quick-install valve of Embodiment Nineteen.

[0060] Figure 53 is a cross-sectional view of the quick-install valve in Embodiment 19.

[0061] In the attached diagram:

[0062] 1. First component; 2. Second component; 4. First sealing ring; 5. Second sealing ring; 6. Valve body; 7. Socket structure; 8. Spiral structure; 9. Third sealing ring;

[0063] 11. First main pipe; 12. First pipe connector; 13. Third end; 14. Fourth end; 120. First end face; 1200. First circumferential limiting part; 121. Main body; 122. Boss; 123. Large inner hole section; 124. Small inner hole section; 125. Step;

[0064] 21. Second main pipe; 22. Second pipe fitting; 220. Second end face; 2200. Second circumferential limiting part; 221. Sealing section; 222. Limiting section; 2220. Radial limiting part; 23. First end; 24. Second end; 25. Threaded interface; 1021. First large inner hole section; 1022. First small inner hole section; 1023. First stepped surface;

[0065] 31. Limiting groove; 32. Insertion hole; 321. Arc-shaped hole section; 322. Extension section; 3220. First extension section; 3221. Second extension section; 33. Pin; 330. Actuating section; 301. Hand-held part; 331. Tightening part; 331a. Lever part; 3310a. Lever structure; 3310b. Lever structure; 312. Anti-slip structure; 332. Threaded part; 333. Insertion part; 334. Elastic element;

[0066] 40. First sealing groove; 50. Second sealing groove;

[0067] 61. Connecting end; 111. Male connecting end; 112. Female connecting end; 113. Male connector; 114. Female connector;

[0068] 71. First socket structure; 81. First spigot structure;

[0069] 100. First valve; 101. Second valve;

[0070] 200. Stepped surface. Detailed Implementation

[0071] The present application will now be described in conjunction with the accompanying drawings and embodiments. The embodiments described herein are merely illustrative and not intended to limit the scope of the application. For ease of description, only the parts relevant to the present application are shown in the drawings, not the entire structure.

[0072] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application according to the circumstances.

[0073] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0074] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0075] First Implementation Method

[0076] Example 1

[0077] Referring to Figures 1, 2, 3, and 4, a plug-in structure includes a first pipe connector 12, a second pipe connector 22, and a plug-in unit. The first pipe connector 12 is formed at one end of a first component 1, and the second pipe connector 22 is formed at one end of a second component 2. Using the dotted line in Figure 3 as a boundary, the first component 1 also includes a first main pipe 11 connected to the first pipe connector 12. Using the dotted line in Figure 4 as a boundary, the second component 2 also includes a second main pipe 21 connected to the second pipe connector 22. During installation, the second pipe connector 22 extends into the first pipe connector 12, allowing the first component 1 and the second component 2 to mate and ensuring the internal media can flow between them.

[0078] Referring to Figures 1, 2, and 5, the plug-in structure is configured to axially limit the first pipe connector 12 and the second pipe connector 22 to connect the first component 1 and the second component 2. The plug-in unit includes a limiting groove 31, a socket 32, and a pin 33 corresponding to each socket 32. The pin 33 can be a single pin, meaning one pin 33 corresponds to one socket 32. The single pin 33 can be a straight rod, but it can also be other shapes. As can be seen from the figures, in this embodiment, the side wall of the first pipe connector 12 has only one socket 32. The single pin 33 is inserted into the socket 32. At the same time, for easy disassembly and assembly, the end of the single pin 33 has a protruding handle (not shown in the figure).

[0079] In this embodiment, the limiting groove 31 surrounds the outer wall of the second pipe connector 22, and the limiting groove 31 is perpendicular to the central axis of the second pipe connector 22. This not only facilitates processing, but also allows the second pipe connector 22 to rotate 360° freely during the process of extending into the first pipe connector 12. When assembling the single pin 33, there is no need to adjust the relative angle between the second pipe connector 22 and the first pipe connector 12. After the single pin 33 extends into the insertion hole 32, it can be limited and engaged with the limiting groove 31, thus facilitating the installation of the single pin 33. Referring to Figure 4, in order to enable the insertion hole 32 and the limiting groove 31 to be axially positioned when the (front) second end face 220 of the second pipe connector 22 extends into the first pipe connector 12, a stepped surface 200 is provided at the junction of the second pipe connector 22 (rear end) and the second main pipe 21. When the stepped surface 200 of the second pipe connector 22 abuts against the first end face 120 of the first pipe connector 12, the limiting groove 31 is just aligned with the insertion hole 32.

[0080] Referring to Figure 6, the first pipe connector 12 of this embodiment includes a main body 121 and a boss 122 protruding from the main body 121. The boss 122 extends tangentially along the first pipe connector 12, and for ease of processing, the boss 122 has a symmetrical structure. The insertion hole 32 is formed within the boss 122, and the insertion hole 32 is arranged tangentially along the second pipe connector 22 while penetrating the inner wall of the main body 121. The presence of the boss 122 can lengthen the insertion hole 32, thereby improving the reliability of the insertion unit. In addition, the end face 1220 of the boss 122 is a plane, and the insertion hole 32 is formed on this plane 1220, which facilitates positioning and processing of the insertion hole 32.

[0081] In one embodiment, the insertion hole 32 is a through hole, allowing the single pin 33 to pass completely through it, thereby further enhancing the reliability of the connection. Additionally, as shown in Figure 6, the insertion hole 32 intersects with the limiting groove 31. When the single pin 33 passes through the insertion hole 32, a portion of the pin 33 is naturally confined within the limiting groove 31. This structure further improves the reliability of axial positioning.

[0082] After installation, the single pin 33 passes through the insertion hole 32 and is simultaneously confined within the limiting groove 31, thereby ensuring that the first pipe joint 12 and the second pipe joint 22 will not undergo relative displacement in the axial direction.

[0083] Referring to Figure 2, the plug-in structure further includes a first sealing ring 4 and a second sealing ring 5. The first sealing ring 4 and the second sealing ring 5 are used for sealing and are disposed between the outer wall of the second pipe joint 22 and the inner wall of the first pipe joint 12, with the first sealing ring 4 and the second sealing ring 5 spaced apart from each other.

[0084] The first sealing ring 4 is located between the second end face 220 of the second pipe connector 22 and the limiting groove 31. Compared with the limiting groove 31, the first sealing ring 4 is closer to the second end face 220 of the second pipe connector 22, which can prevent the medium from leaking from the insertion unit.

[0085] A second sealing ring 5 is also provided between the second pipe joint 22 and the first pipe joint 12. The first sealing ring 4 is located on one side of the limiting groove 31, and the second sealing ring 5 is located on the other side of the limiting groove 31. The second sealing ring 5 provides a second layer of protection for the seal between the second pipe joint 22 and the first pipe joint 12, further enhancing the sealing effect. In addition, after assembly, the second sealing ring 5 is closer to the first end face 120 of the first pipe joint 12, which can balance the compressive force on the first sealing ring 4, thereby improving the overall bending resistance of the pipeline and providing effective protection for the first sealing ring 4.

[0086] Example 2

[0087] Referring to Figure 7, this second embodiment is basically the same in structure as the first embodiment described above. The main difference is that the boss structure is removed in this embodiment, and the single pin 33 is directly inserted into the first pipe joint 12 and the second pipe joint 22. As a comparative example, the single pin 33 of this structure is prone to falling off.

[0088] Example 3

[0089] Referring to Figure 8, the structure of this embodiment 3 is basically the same as that of the above embodiment 1. The main difference is that the socket (not shown in the figure) in this embodiment is a blind hole, and the other end of the single pin 33 does not penetrate the socket.

[0090] Example 4

[0091] Referring to Figure 9, the structure of this embodiment four is basically the same as that of the above embodiment one. The main difference is that in this embodiment, a stepped surface 200 is provided at the junction of the first main pipe 11 and the first pipe connector 12. When the second end face 220 of the second pipe connector 22 abuts against the stepped surface 200, the limiting groove 31 is aligned with the insertion hole 32 in the axial direction.

[0092] Example 5

[0093] Referring to Figure 10, this fifth embodiment has a structure that is basically the same as that of the first embodiment above. The main difference is that this embodiment has two single pins 33 and two symmetrically arranged sockets (not shown in the figure). The two single pins 33 are respectively inserted into the two sockets, which has good structural stability.

[0094] Example 6

[0095] Referring to Figure 11, the structure of this sixth embodiment is basically the same as that of the first embodiment above. The main difference is that, in order to achieve a better sealing effect, two first sealing rings 4 are provided between the second end face 220 of the second pipe joint 22 and the limiting groove 31 at intervals.

[0096] Second Implementation Method

[0097] Example 7

[0098] As can be seen from Figures 12 and 13, the main difference between this embodiment 7 and embodiments 1 to 6 is that the first pipe joint 12 includes a large inner hole section 123 and a small inner hole section 124 sequentially from its end face 1200. A step 125 is formed at the junction of the large inner hole section 123 and the small inner hole section 124. In this embodiment, the step 125 is a conical surface (it can also be set as an arc surface according to actual needs).

[0099] Referring again to Figure 12, the large inner hole section 123 has a protrusion 122 tangentially along its outer side wall. A tangentially extending insertion hole 32 is formed within the protrusion 122, parallel to the tangential direction of the first pipe connector 12. In this embodiment, both the inner walls of the large inner hole section 123 and the small inner hole section 124 are circular. Referring also to Figure 16, the insertion hole 32 includes an arc-shaped hole section 321 penetrating the inner wall of the large inner hole section 123 and extension sections 322 located on both sides of the arc-shaped hole section 321. In this embodiment, both extension sections 322 are straight holes, with one end of each extension section 322 connected to the arc-shaped hole section 321, and the other end of each extension section 322 penetrating the corresponding end face of the protrusion 122. Therefore, in this embodiment, the insertion hole 32 is a through hole.

[0100] The second pipe connector 22 includes a sealing section 221 and a limiting section 222 sequentially from its end face (220). In this embodiment, the outer diameters of the sealing section 221 and the limiting section 222 are basically the same. A first sealing groove 40 is provided on the sealing section 221, and a first sealing ring 4 is embedded in the first sealing groove 40. A limiting groove 31 is provided on the limiting section 222, and the limiting groove 31 is located beside the first sealing groove 40. At the same time, in order to ensure that the second pipe connector 22 can be inserted into the first pipe connector 12 from any angle, the limiting groove 31 is an annular groove, which is perpendicular to the central axis of the limiting section 222.

[0101] Referring to Figures 14 and 15, during assembly, the second pipe connector 22 is first inserted into the first pipe connector 12. At this time, the sealing section 221 is sealed and inserted into the small inner hole section 124. The sealing section 221 can be sealed and fitted with the inner wall of the small inner hole section 124 through the first sealing ring 4. Optionally, to ensure that the first sealing ring 4 is not cut by the edge of the arc-shaped hole section 321, the outer diameter of the first sealing ring 4 is smaller than the inner diameter of the large inner hole section 123.

[0102] At the same time, the limiting groove 31 of the limiting segment 222 is aligned with the arc-shaped hole segment 321 of the insertion hole 32, and they intersect.

[0103] Finally, the pin 33 is inserted into the socket 32 ​​from one end, and the part of the pin 33 that falls into the arc-shaped hole section 321 forms the working section 330. The side of the working section 330 is simultaneously confined in the limiting groove 31, thereby completing the assembly and limiting the axial displacement of the first pipe joint 12 and the second pipe joint 22.

[0104] Example 8

[0105] Referring to Figures 17 and 18, this embodiment is basically the same in structure as Embodiment 8 above. The main difference is that in this embodiment, the limiting segment 222 further includes a radial limiting part 2220 adapted to the inner wall of the large inner hole segment 123. The outer wall dimension of the radial limiting part 2220 is larger than the outer wall dimension of the sealing segment 221 (the two dotted lines A and B in the figure represent the difference in outer diameter), and the limiting groove 31 is located between the sealing segment 221 and the radial limiting part 2220. The outer diameter of the radial limiting part 2220 is close to the inner diameter of the large inner hole segment 123, so that after assembly, the radial limiting part 2220 fits snugly with the large inner hole segment 123, which can effectively prevent shaking and improve the stability of the structure. Optionally, a second sealing ring 5 is fitted on the radial limiting part 2220, which can further prevent shaking and has a dustproof effect.

[0106] Furthermore, the inner wall of the aforementioned large inner hole section 123 is not limited to a circle; the aforementioned pin can also be a U-shaped pin with two pins.

[0107] Third Implementation Method

[0108] Example 9

[0109] Referring to Figure 19, the main difference between this embodiment nine and embodiments one to eight is that the pin (33) is threadedly connected to the insertion hole (32).

[0110] Referring to Figure 20, to ensure the stability of the fit, the insertion hole 32 includes an arc-shaped hole segment 321 in the middle and a first extension segment 3220 and a second extension segment 3221 respectively connected to the two ends of the arc-shaped hole segment 321. The arc-shaped hole segment 321 penetrates the inner wall of the first pipe joint 12 and intersects with the inner wall of the first pipe joint 12. In this embodiment, the inner wall of the large inner hole segment 123 intersects with the arc-shaped hole segment 321.

[0111] In this embodiment, the first extension 3220 of the insertion hole 32 forms a threaded interface 25; the second extension 3221 is a blind hole structure. The threaded interface 25 includes a first large inner hole section 1021 and a first small inner hole section 1022 sequentially from its port. A first stepped surface 1023 is formed between the first large inner hole section 1021 and the first small inner hole section 1022, and the first large inner hole section 1021 is provided with internal threads.

[0112] Referring to Figures 21 and 22, the pin 33 includes a hand-tightening portion 331, a threaded portion 332, and a plug-in portion 333. The hand-tightening portion 331 is exposed outside the threaded interface 25 and has an anti-slip structure (e.g., knurled structure in this embodiment). The threaded portion 332 is threadedly connected to the first large inner hole section 1021 of the threaded interface 25. After the plug-in portion 333 is inserted into the insertion hole 32, it extends into the second extension section 3221. The portion of the plug-in portion 333 located within the arc-shaped hole section 321 forms an action section 330 for axially limiting the first pipe connector 12 and the second pipe connector 22.

[0113] In this embodiment, the threaded interface 25 is formed in the first extension section 3220, and the insertion part 333 is fitted with a third sealing ring 9 for sealing with the first extension section 3220; and the second extension section 3221 is a blind hole. The setting of the third sealing ring 9 on the first extension section 3220, combined with the blind hole design of the second extension section 3221, can play a good sealing role and prevent fluid from overflowing from the insertion hole 32.

[0114] Referring to Figures 13 and 14, the second pipe joint 22 is provided with a sealing structure, which consists of a first sealing ring 4 and a first sealing groove 40 that cooperate with each other.

[0115] As shown in Figure 21, after installation, the second pipe connector 22 is inserted into the first pipe connector 12, the hand-tightening part 331 of the pin 33 is exposed on the threaded interface 25, the threaded part 332 of the pin 33 is threaded into the first large inner hole section 1021, and the insertion part 333 of the pin 33 extends into the second extension section 3221 of the insertion hole 32. At this time, the action section 330 of the pin 33 is located in the arc-shaped hole section 321 of the insertion hole 32, and the side of the action section 330 is simultaneously located in the limiting groove 31 of the second pipe connector 22, thereby making the first pipe connector 12 and the second pipe connector 22 mutually axially limited.

[0116] Example 10

[0117] Referring to Figures 23 and 24, this embodiment is basically the same in structure as Embodiment Nine described above. The main difference is that the pin 33 includes a wrench portion 331a, a threaded portion 332, a plug portion 333, and an elastic element 334 for increasing the preload. The wrench portion 331a is exposed at the threaded interface 25; the threaded portion 332 is threadedly connected to the first large inner hole section 1021. As can be seen from the figures, the elastic element 334 is an elastic retaining ring, which is pressed between the threaded portion 332 and the first stepped surface 1023. The elastic element 334 enhances the preload of the pin 33, prevents the pin 33 from being manually tightened, and has a certain anti-theft effect.

[0118] Optionally, the wrench portion 331a is provided with a wrench structure 3310a for cooperating with a special tooling. In this embodiment, the wrench structure 3310a is an inner triangular structure formed on the top surface of the wrench portion 331a, or it can be designed as the shape of the wrench structure 3310b shown in Figure 25, with an outer triangular structure having an arc-shaped transition edge on its outer side. Of course, the shape of the wrench structure is not limited to this, as long as a conventional wrench structure cannot unscrew it. This design can enhance the anti-theft performance.

[0119] Fourth Implementation Method

[0120] This application provides a plug-in structure configured to connect a first component and a second component. This plug-in structure can be used for pipeline connections, wherein the first component is a first pipeline to be connected, and the second component is a second pipeline to be connected; it can also be used for connecting a valve to a pipeline, wherein the first component is the pipeline to be connected, and the second component is the valve to be connected; furthermore, it can be used for valve connections, wherein the first component is a first valve to be connected, and the second component is a second valve to be connected. This application does not limit the structure or model of the valve described above, and it can be a pressure reducing valve, check valve, gate valve, ball valve, globe valve, etc.

[0121] Unlike the above embodiments, this embodiment uses two connected valves as an example to introduce the plug-in structure provided in this application through multiple embodiments.

[0122] Example 11

[0123] Figure 26 shows a schematic diagram of the plug-in structure provided in this embodiment. Figure 27 shows a partial schematic diagram of the first valve 100 provided in this embodiment. Figure 28 shows a cross-sectional schematic diagram of the first valve 100 provided in this embodiment. Figure 29 shows a schematic diagram of the second valve 101 provided in this embodiment. Figure 30 shows a cross-sectional schematic diagram of the second valve 101 provided in this embodiment. As shown in Figures 26-30, this embodiment provides a plug-in structure, which is configured to connect a first component 1 (first valve 100) and a second component 2 (second valve 101). Using the dashed line in Figure 28 as the boundary, the first valve 100 includes a first valve body 110 and a first pipe connector 12 connected together; using the dashed line in Figure 30 as the boundary, the second valve 101 includes a second valve body 210 and a second pipe connector 22 connected together. During connection, the first pipe connector 12 is sealed and fitted over the second pipe connector 22, so that the first pipe connector 12 and the second pipe connector 22 are in contact with each other, and ensuring that the media inside both can flow between them.

[0124] Figure 31 shows a first cross-sectional schematic diagram (partial) of the plug-in structure provided in this embodiment. Figure 32 shows a second cross-sectional schematic diagram (partial) of the plug-in structure provided in this embodiment. As shown in Figures 31-32 and in conjunction with Figures 27-30, this embodiment differs from embodiments one to six in that a portion of the pin 33 is located within the limiting groove 31, and the portion of the pin 33 located within the limiting groove 31 forms an active segment. The active segment can abut against the groove wall of the limiting groove 31 on the side near the end face of the second pipe joint 22 to limit the insertion of the first pipe joint 12 and the second pipe joint 22 in the axial direction; the maximum axial dimension of the active segment of the second pipe joint 22 is smaller than the axial dimension of the limiting groove 31 of the second pipe joint 22.

[0125] The plug-in structure provided in this embodiment can be used for a stable connection between the first valve 100 and the second valve 101. During connection, the second pipe connector 22 can be inserted into the first pipe connector 12 first; after insertion, the pin 33 is then inserted into the socket 32. At this time, the active section of the pin 33 can be located in the limiting groove 31 to limit the connection between the first pipe connector 12 and the second pipe connector 22, preventing them from separating during use. By setting the maximum axial dimension of the active section of the second pipe connector 22 to be smaller than the axial dimension of the limiting groove 31, the first pipe connector 12 and the second pipe connector 22 can still extend and retract along their axial directions, providing sufficient space for the two valves to be connected to or removed from their respective pipes, thus reducing the difficulty of operation for operators and improving assembly and disassembly efficiency.

[0126] The steps for installing two valves (valve assemblies) connected by the plug-in structure into the corresponding pipes are as follows: 1) First, move the two valves along the axial direction of the second pipe joint 22 (which is also the axial direction of the first pipe joint 12) to minimize their size along the axial direction of the second pipe joint 22; 2) Connect one end of the valve assembly (the end of the first valve 100 facing away from the second valve 101 or the end of the second valve 101 facing away from the first valve 100) into the corresponding pipe; 3) Move the two valves along the axial direction of the second pipe joint 22 to match the size of the valve assembly along the axial direction of the second pipe joint 22 with the size of the corresponding connection position, and then connect the other end of the valve assembly into the corresponding pipe.

[0127] As shown in Figures 29-31, a stepped surface 200 is provided on the outer wall of the second pipe connector 22. The stepped surface 200 is located on the side of the limiting groove 31 away from the second end face 220 of the second pipe connector 22. The stepped surface 200 can abut against the first end face 120 of the first pipe connector 12 to limit the sliding distance of the first pipe connector 12 relative to the second pipe connector 22. When the first valve 100 moves to the right relative to the second valve 101 (the right side as shown in Figure 31) until the first end face 120 of the first pipe connector 12 abuts against the stepped surface 200, the valve assembly is at its shortest length along the axial direction of the second pipe connector 22. When the first valve 100 moves to the left relative to the second valve 101 (the left side as shown in Figure 31) until the pin 33 abuts against the left side wall of the limiting groove 31, the valve assembly is at its longest length along the axial direction of the second pipe connector 22, thereby limiting the relative movement between the first valve 100 and the second valve 101.

[0128] In this embodiment, the groove wall of the limiting groove 31 on the side away from the second end face 220 of the second pipe connector 22 extends outward in its radial direction to form the aforementioned stepped surface 200. This structure is simple and easy to manufacture. Of course, in other embodiments, the stepped surface 200 can also be a protruding structure provided on the outside of the second pipe connector 22, achieving the same effect.

[0129] To achieve a sealed installation between the second pipe joint 22 and the first pipe joint 12, at least one first sealing ring 4 is provided between the first pipe joint 12 and the second pipe joint 22. The first sealing ring 4 is located between the limiting groove 31 and the second end face 220 of the second pipe joint 22. The provision of the first sealing ring 4 can prevent the fluid medium in the first valve 100 and the second valve 101 from leaking from the gap between the first pipe joint 12 and the second pipe joint 22.

[0130] In this embodiment, two first sealing rings 4 are used to reduce the number of first sealing rings 4 while achieving a sealing effect, thereby reducing processing costs. The first sealing rings 4 are rubber sealing rings, which have good sealing effect and low cost. This embodiment does not limit the number of first sealing rings 4; the number of first sealing rings 4 can also be three, four, five, or even more.

[0131] To ensure the stability of the first sealing ring 4 during installation, in this embodiment, the outer wall of the second pipe joint 22 is provided with a first sealing groove 40 for installing the first sealing ring 4, so as to prevent the first sealing ring 4 from falling off or shifting. Of course, in other embodiments, the first sealing groove 40 can also be provided on the inner wall of the first pipe joint 12 to install the first sealing ring 4, and the above effect can be achieved in the same way.

[0132] Figure 33 shows a schematic diagram of the structure of the pin 33 provided in this embodiment. As shown in Figure 33 and in conjunction with Figure 32, in this embodiment, the pin 33 is a single pin, that is, the pin 33 is a straight rod structure, which can directly extend into the socket 32 ​​to further enhance the reliability of the connection and the convenience of the assembly process. Optionally, the end of the pin 33 also has a protruding handle 301 to facilitate the installation and removal of the pin 33. In actual installation, the pin 33 can be inserted into the socket 32 ​​from either end opening to further improve the convenience of assembly between the first valve 100 and the second valve 101.

[0133] For ease of processing, in this embodiment, the first pipe connector 12 and the first valve body 110 are integrally formed; the second pipe connector 22 and the second valve body 210 are integrally formed. This arrangement can eliminate the step of assembling multiple parts together, improving assembly efficiency; and can reduce leakage points on the first valve 100 or the second valve 101, improving the safety of the valve assembly.

[0134] As shown in Figures 27 and 29, to facilitate the sequential connection of multiple valves and pipes in the pipeline connection, a second pipe joint 22 is formed at the other end of the first valve 100, and a first pipe joint 12 is formed at the other end of the second valve 101. That is, the two ends of the first valve 100 form a first pipe joint 12 and a second pipe joint 22, respectively, and the two ends of the second valve 200 form a first pipe joint 12 and a second pipe joint 22, respectively. During connection, the first pipe joint 12 of the first valve 100 is inserted into the second pipe joint 22 of the second valve 101, and the second pipe joint 22 of the first valve 100 can be inserted into other valves or pipes in the pipeline, and the first pipe joint 12 of the second valve 101 can be inserted into other valves or pipes in the pipeline.

[0135] Example 12

[0136] This embodiment provides a plug-in structure, which is roughly the same as the plug-in structure in Embodiment Eleven, except that the structure of the socket 32 ​​is different.

[0137] Figure 34 shows a partial structural schematic diagram of the first valve 100 provided in this embodiment. Figure 35 shows a partial cross-sectional schematic diagram of the plug-in structure provided in this embodiment. As shown in Figures 34 and 35, in this embodiment, the plug hole 32 is a blind hole. By setting the plug hole 32 as a blind hole, the end of the plug hole 32 without an opening can limit the pin 33, thereby preventing the pin 33 from falling off during use.

[0138] In this embodiment, when processing the first pipe connector 12, the opening of the socket 33 can be set upwards to facilitate the insertion of the pin 33 and to provide better limiting effect. The "upper" in "the opening of the socket 32 ​​is set upwards" refers to the top of the plug assembly during actual installation and use.

[0139] Fifth Implementation Method

[0140] Example 13

[0141] This embodiment provides a plug-in structure, which is mainly used for quick connection between valves in water systems such as urban water supply and drainage systems, fire protection systems, water treatment systems, domestic water systems, air conditioning systems, and heating systems.

[0142] As shown in Figures 36 to 40, this embodiment differs from the above embodiments one to ten in that a second circumferential limiting part 2200 is provided on the outer wall of the second pipe joint 22, and a first circumferential limiting part 1200 is provided on the inner wall of the first pipe joint 12. The second circumferential limiting part 2200 cooperates with the first circumferential limiting part 1200 to circumferentially limit the second pipe joint 22 and the first pipe joint 12.

[0143] During installation, first insert one end of the second pipe connector 22 into the first pipe connector 12, then rotate the second pipe connector 22 and the first pipe connector 12 so that the second circumferential limiting part 2200 engages with the first circumferential limiting part 1200. After installation, insert the pin 33 through the insertion hole 32. The pin 33 passes through the insertion hole 32 and is simultaneously limited within the limiting groove 31, achieving an axial fixed connection between the first pipe connector 12 and the second pipe connector 22, thereby ensuring that the second pipe connector 22 and the first pipe connector 12 will not have relative displacement in the axial direction. Furthermore, through the engagement of the second circumferential limiting part 2200 and the first circumferential limiting part 1200, relative rotation between the second pipe connector 22 and the first pipe connector 12 can be restricted, thereby preventing relative rotation between valves and thus meeting the requirements for restricting rotation during the installation of some valves.

[0144] In this embodiment, as shown in Figures 38 to 40, the second circumferential limiting portion 2200 is an outer polygonal portion formed on the outer wall of the second pipe connector 22, and the first circumferential limiting portion 1200 is an inner polygonal portion formed on the inner wall of the first pipe connector 12. The inner polygonal portion is adapted to the outer polygonal portion, and the inner polygonal portion is fitted onto the outer polygonal portion, thus limiting the circumferential position of the outer polygonal portion. By fitting the inner polygonal portion onto the outer polygonal portion, the circumferential position of the second pipe connector 22 and the first pipe connector 12 is achieved, making the anti-rotation structure simple and the anti-rotation effect good.

[0145] In one optional embodiment, as shown in Figures 38 to 40, the second end face 220 of the second pipe connector 22 is defined as the first end 23, and the end of the second pipe connector 22 away from the second end face 220 is defined as the second end 24. The first end face 120 of the first pipe connector 12 is defined as the third end 13, and the end of the first pipe connector 12 away from the first end face 120 is defined as the fourth end 14. The outer polygonal portion is located at the first end 23, and the inner polygonal portion is located at the fourth end 14. Alternatively, the second end face 220 of the second pipe connector 22 is the first end 23, the end of the second pipe connector 22 away from the second end face 220 is defined as the second end 24, the first end face 120 of the first pipe connector 12 is the third end 13, and the end of the first pipe connector 12 away from the first end face 120 is defined as the fourth end 14. The outer polygonal portion is located at the second end 24, and the inner polygonal portion is located at the third end 13. When the inner polygonal part 1201 is fitted onto the outer polygonal part, it can achieve circumferential positioning of the second pipe connector 22 and the first pipe connector 12, making the anti-rotation structure simple and the anti-rotation effect good.

[0146] In another optional embodiment, as shown in Figures 41 to 43, the outer polygonal portion is located at the second end 24, and the inner polygonal portion is located at the third end 13. When the inner polygonal portion is fitted onto the outer polygonal portion, the circumferential limiting of the second pipe connector 22 and the first pipe connector 12 can also be achieved, making the anti-rotation structure simple and the anti-rotation effect good.

[0147] In one optional embodiment, as shown in Figures 38 and 39, the outer polygonal portion is an outer hexagonal portion, and the inner polygonal portion is an inner hexagonal portion. When the inner hexagonal portion is fitted onto the outer hexagonal portion, circumferential positioning of the second pipe connector 22 and the first pipe connector 12 can be achieved. In other optional embodiments, the outer polygonal portion and the inner polygonal portion can also be other polygonal structures such as triangles, squares, and pentagons, which can be selected according to actual needs and are not limited here.

[0148] In another optional embodiment, the second circumferential limiting portion 2200 may also be a plurality of first protruding ridges, which are distributed at equal intervals along the circumference on the outer wall of the second pipe joint 22, with a first limiting gap formed between each pair of adjacent first protruding ridges. The first circumferential limiting portion 1200 may also be a plurality of second protruding ridges, which are distributed at equal intervals along the circumference on the inner wall of the first pipe joint 12, with a second limiting gap formed between two second protruding ridges. When the second pipe joint 22 is assembled with the first pipe joint 12, the plurality of first protruding ridges and the plurality of second limiting gaps are fitted one-to-one, which can also achieve the effect of limiting the rotation of the second pipe joint 22 relative to the first pipe joint 12.

[0149] In another optional embodiment, the pin 33 is a U-shaped pin. Each of the two opposite sides of the first pipe connector 12 has a socket 32. The two free ends of the U-shaped pin pass through the corresponding socket 32 ​​and are simultaneously confined within the limiting groove 31. Part of the U-shaped pin protrudes outside the socket 32. This allows for axial fixation between the second pipe connector 22 and the first pipe connector 12, and the exposed portion of the U-shaped pin can serve as a force application point during pull-out, making disassembly and assembly convenient and quick. This type of U-shaped pin design is quite common in related technologies.

[0150] In another optional embodiment, it can also be configured with two single pins 33 and two symmetrically arranged insertion holes 32. The two single pins 33 are respectively inserted into the two insertion holes 321, which can also achieve the axial fixed connection between the second pipe connector 22 and the first pipe connector 12.

[0151] In this embodiment, as shown in FIG40, a first sealing ring 4 is provided on the second pipe connector 22 to seal against the first pipe connector 12. The first sealing ring 4 is located between the second end face 220 (first end 23) of the second pipe connector 22 and the limiting groove 31. As shown in FIG42, a first sealing groove 40 is formed on the outer side wall of the second pipe connector 22, which surrounds it circumferentially. The first sealing groove 40 is located between the limiting groove 31 and the first end 23. The first sealing ring 4 is disposed in the first sealing groove 40, and the outer ring of the first sealing ring 4 abuts against the inner wall of the first pipe connector 12. The first sealing ring 4 has a thicker wire diameter and is closer to the second end face 220 of the second pipe connector 22. It is mainly used for sealing between the side wall of the second pipe connector 22 and the first pipe connector 12 to prevent liquid from leaking out from the insertion hole 32 and the gap between the second pipe connector 22 and the first pipe connector 12.

[0152] Referring again to Figure 40, the second pipe joint 22 is further provided with a second sealing ring 5 that seals with the first pipe joint 12. A second sealing groove 50 is also formed on the outer wall of the second pipe joint 22, circumferentially surrounding it. The second sealing groove 50 is located on the side of the limiting groove 31 away from the first end 23, and the second sealing ring 5 is housed within the second sealing groove 50. The second sealing ring 5 has a thinner wire diameter than the first sealing ring 4, providing a second layer of protection for the seal between the second pipe joint 221 and the first pipe joint 12, further enhancing the sealing effect.

[0153] This embodiment also provides a valve assembly, including a first valve 100, a second valve 101, and the aforementioned plug-in structure. A second pipe connector 22 is part of the second valve 101, and a first pipe connector 12 is part of the first valve 100. The second pipe connector 22 and the first pipe connector 12 are plugged into each other, thereby achieving a quick connection between the first valve 100 and the second valve 101. The first valve 100 and the second valve 101 can be one of the following valve structures: ball valve, gate valve, globe valve, pressure reducing valve, etc., and are not limited thereto.

[0154] The valve assembly provided in this embodiment, by setting the above-mentioned plug-in structure, can restrict the relative rotation between the second pipe joint 22 and the first pipe joint 12, thereby preventing the valve from rotating relative to the valve, and thus meeting the requirements for restricting rotation during the installation of some valves.

[0155] Sixth Implementation Method

[0156] In related technologies, valves are quickly connected using a connection structure. A quick valve connection typically includes a female connector and a male connector inserted into the female connector. The male connector has a circumferentially oriented groove on its outer wall, and the female connector has a corresponding insertion hole. A pin passes through both the insertion hole and the oriented groove to achieve the connection between the male and female connectors. However, some valves (such as check valves) have directional requirements when installed on pipelines. When both the valve and the pin are installed vertically, it is impossible to guarantee that the male and female connectors are completely fixed.

[0157] Example 14

[0158] This embodiment provides a plug-in structure, as shown in Figures 48 to 50. The difference between this embodiment and the above embodiments one to ten is that the pin 33 passes through the plug hole 32 in the horizontal direction and is confined in the limiting groove 31.

[0159] During installation, the insertion hole 32 faces horizontally, and then the pin 33 is inserted horizontally into the insertion hole 32. After the pin 33 passes through the insertion hole 32, it is simultaneously confined within the limiting groove 31, achieving an axial fixed connection between the first pipe connector 12 and the second pipe connector 22. This ensures that the first pipe connector 12 and the second pipe connector 22 will not undergo relative displacement in the axial direction. During disassembly, simply pull the pin 33 outward, making assembly and disassembly convenient and quick. The plug-in structure provided in this embodiment uses a horizontally installed pin 33, which, compared to a vertically installed method, prevents interference with the opening and closing components above the valve (such as the handwheel of a gate valve), making assembly and disassembly easier.

[0160] Seventh Implementation Method

[0161] This embodiment provides a quick-connect valve, which includes a valve body 6 and plug-in structures as described in the above embodiment located at both ends of the valve body 6.

[0162] The two ends of the valve body are respectively set as connection ends 61. Both connection ends 61 are formed as the first pipe joint 12, or both are formed as the second pipe joint 22, or are formed as the first pipe joint 12 and the second pipe joint 22 respectively.

[0163] The quick-connect valve 6 can be a ball valve, gate valve, pressure reducing valve, check valve, or globe valve, and is not limited thereto. In this embodiment, only a gate valve is illustrated; other types of valves are not illustrated in detail here. The structure and working principle of the gate valve are related technologies and will not be described in detail here. The first pipe connector 12 and / or the second pipe connector 22 can be pipe connectors or valve connection ends; that is, the plug-in structure can realize the connection between the valve and the pipe, or the connection between valves.

[0164] Example 15

[0165] Referring to Figure 44, Embodiment 15 provides a quick-install valve, wherein the two connecting ends 61 of the valve body 6 are a socket structure 8 and a spigot structure 7, respectively.

[0166] In this embodiment, the socket structure 8 is formed as a second pipe connector 22, and a limiting groove 31 and a sealing component are formed on the outer wall of the second pipe connector 22. In order to facilitate the adjustment of the direction of the quick-install valve during the assembly process, the limiting groove 31 surrounds the outer wall of the second pipe connector 22, and for ease of processing, the trajectory of the limiting groove 31 is perpendicular to the central axis of the second pipe connector 22.

[0167] The sealing assembly includes a first sealing groove 40 (not shown in the figure due to perspective) formed on the outer wall of the second pipe connector 22, a first sealing ring 4 disposed within the first sealing groove 40, and the first sealing ring 4 disposed on the side of the limiting groove 31 near the port of the second pipe connector 22. The sealing assembly also includes a second sealing groove 50 (not shown in the figure due to perspective) formed on the outer wall of the second pipe connector 22, a second sealing ring 5 disposed within the second sealing groove 50, and the second sealing ring 5 disposed on the side of the limiting groove 31 away from the port of the second pipe connector 22, the limiting groove 31 being located between the first sealing ring 51 and the second sealing ring 52.

[0168] Referring to Figure 16, the socket structure 7 is formed as a first pipe connector 12, which includes a main body 31 and a boss 122 protruding from the main body 121. A insertion hole 32 is formed in the boss 122. As can be seen from the figure, the boss 122 is tangentially disposed on the side of the main body 121, and the insertion hole 32 is formed within the boss 122, penetrating the inner wall of the main body 121. The boss 122 extends the length of the insertion hole 32, thereby improving the reliability of the connection. Continuing to refer to the figures, the end face of the boss 122 is flat, and the port of the insertion hole 32 is formed on this flat surface, facilitating positioning and machining of the insertion hole 32. The aforementioned boss 122 is not mandatory; the socket structure 7 can also directly form the insertion hole 32 on the main body 121.

[0169] Referring to Figures 45 and 5, this embodiment uses the connection of a gate valve to the first pipeline and the second pipeline as an example. Of course, it can also be connected to other valves. These valves can be commonly used valves in waterworks, such as ball valves, gate valves, globe valves, check valves, pressure reducing valves, etc.

[0170] As shown in the figure, the first pipeline has a first socket structure 71 (first pipe joint 12). The inner wall of the first socket structure 71 is greater than or equal to the outer diameter of the spigot structure 8 (second pipe joint 22). After assembly, the spigot structure 8 is inserted into the first socket structure 71 of the first pipeline and is axially limited by a straight rod-shaped single pin 33 (the socket hole and the single pin correspond one-to-one). As shown in Figure 5, the single pin 33 extends into and passes through the socket hole 32, and part of the single pin 33 also falls into the limiting groove 31 of the spigot structure 8 at the same time, thus forming a connecting end 61 and axial limitation of the first pipeline while completing the docking.

[0171] The second pipeline has a second spigot structure 81, the outer wall of which is less than or equal to the inner diameter of the socket structure 7. After assembly, the second spigot structure 81 is inserted into the socket structure 7 and is axially limited by a straight rod-shaped single pin 33.

[0172] In this embodiment, axial positioning is achieved using a socket 32 ​​and a single pin 33. However, this application is not limited to this form and other structural forms can also be used, such as using a U-shaped pin (one U-shaped pin with two sockets).

[0173] Example 16

[0174] Referring to Figure 46, the structure of this embodiment is basically the same as that of the above embodiment 15. The main difference is that the two connecting ends 61 on the valve body 6 are both socket structures 8 (second pipe joint 22). During actual installation, the pipe or another valve connected to it is equipped with a socket structure 7 (first pipe joint 12).

[0175] Example 17

[0176] [Correction 01.09.2025 according to detailed rules 91] Referring to Figure 47, the structure of this embodiment is basically the same as that of the above embodiment 15. The main difference is that the two connecting ends 61 on the valve body 6 are both socket structures 7 (first pipe joint 12). During actual installation, the pipe or another valve connected to it is equipped with a spigot structure 8 (second pipe joint 22).

[0177] The above embodiments only illustrate optional solutions. In addition, in order to cooperate with existing conventional connection structures (threaded connections, etc.), the quick-install valve of this application may also have one connection end 61 of the valve body adopting a spigot structure 8 or a socket structure 7, while the other connection end 61 adopts a conventional connection structure. Regardless of the method adopted, it is within the protection scope of this application.

[0178] Example 18

[0179] Based on Embodiment Fourteen, this embodiment provides another quick-install valve, as shown in Figures 48 and 49. The two connecting ends 61 are a male connecting end 111 and a female connecting end 112, respectively. The male connecting end 111 forms a second pipe connector 12, and the female connecting end 112 forms a first pipe connector 22. Each connecting end 61 is inserted into a corresponding connector. The connectors at both ends are respectively configured to connect to pipelines to achieve mutual flow of the internal medium. The two connectors are male connectors 113 (i.e., forming a second pipe connector 22). The connector 22) and the female connector 114 (forming a first pipe connector 12) are connected. The male end 111 is inserted into the female connector 114, and the male connector 113 is inserted into the female end 112. Limiting grooves 31 are provided on the outer walls of both the male end 111 and the male connector 113. Insertion holes 32 are provided on both the female end 112 and the female connector 114. One pin 33 is inserted into the insertion hole 32 on the female end 112, and the other pin 33 is inserted into the insertion hole 32 on the female connector 114. The limiting grooves 31 are arranged circumferentially, allowing the connector to rotate 360° circumferentially after installation, facilitating pipe connection.

[0180] In another optional embodiment, both connecting ends 61 can be male terminals 111, and the two connectors that mate with them can be female connectors 114 (first pipe connector 12), which can also achieve the effect of quick-connection. In another optional embodiment, both connecting ends 611 can be female terminals 112, and the two connectors that mate with them can be male connectors 113 (second pipe connector 22), which can also achieve the effect of quick-connection, and there is no limitation here.

[0181] As shown in Figure 49, both the male connector 111 and the male connector 113 are stepped shaft structures. The smaller outer diameter of the male connector 111 is inserted into the female connector 114, and the larger outer diameter is located outside the female connector 114 and is mated with the female connector 114. Similarly, the smaller outer diameter of the male connector 113 is inserted into the female connector 112, and the larger outer diameter is located outside the female connector 112 and is mated with the female connector 112.

[0182] In this embodiment, as shown in Figures 49 and 50, the pin 33 is a single pin. A socket 32 ​​is opened on the female end 112 and the female connector 114 respectively. Part of the single pin 33 passes through the socket 32 ​​and is simultaneously confined in the limiting groove 31, while part of the single pin 33 is exposed outside the socket 32.

[0183] The insertion hole 32 on the female connector 112 is parallel to the tangent direction of the female connector 112 and penetrates the inner wall of the female connector 112, intersecting with the limiting groove 31 on the male connector 113; similarly, the insertion hole 32 on the female connector 114 is parallel to the tangent direction of the female connector 114 and penetrates the inner wall of the female connector 114, intersecting with the limiting groove 31 on the male connector 111. When each single pin 33 is inserted into the insertion hole 32, part of the single pin 33 is naturally confined within the limiting groove 31, thereby achieving axial fixed connection between the male connector 113 and the female connector 112, and axial fixed connection between the female connector 114 and the male connector 111. Installation is convenient, and the part of the single pin 33 exposed outside the insertion hole 32 is for hand-held operation, facilitating disassembly. The single pin 33 can be a straight rod, but it can also be other shapes. Figure 50 only shows a schematic diagram of the connection between the male terminal 111 and the female terminal 114 via a single pin 33. The structure of the connection between the female terminal 112 and the male terminal 113 via a single pin 33 is exactly the same as that in Figure 50, so it will not be shown in the figure again.

[0184] In this embodiment, as shown in FIG50, tangential protrusions 122 are provided on the sidewalls of both the female connector 112 and the female connector 114. A socket 32 ​​is formed within the protrusion 122. The socket 32 ​​is a blind hole, and the other end of the single pin 33 does not penetrate the socket 32. In another optional embodiment, the socket 32 ​​can also be a through hole, allowing the single pin 33 to completely pass through the socket 32, thereby further enhancing the reliability of the connection.

[0185] In an optional embodiment, as shown in FIG50, the female connector 112 and the female connector 114 are provided with threaded interfaces 25 at one end of their respective insertion holes 32. The threaded interfaces 25 communicate with the insertion holes 32. A threaded portion 332 is provided on part of the outer wall of the single pin 33, and the single pin 33 is connected to the threaded interface 25 through the threaded portion 332. This threaded fastening connection reduces the risk of the single pin 33 falling off.

[0186] Referring again to Figure 50, the diameter of the threaded interface 25 is larger than the diameter of the insertion hole 32. A third sealing ring 9 is embedded at the bottom of the threaded interface 25, and the third sealing ring 9 is fitted over the single pin 33. The third sealing ring 9 can be a rectangular sealing ring, which firstly serves to prevent loosening and prevent the single pin 33 from falling off and being lost, and secondly serves to seal and prevent dust.

[0187] As shown in Figure 49, an anti-slip structure 312 is provided on the outer peripheral surface of the single pin 33 exposed outside the threaded interface 25. This structure provides anti-slip protection when screwing the single pin 33, improving screwing efficiency. In this embodiment, the anti-slip structure 312 is a densely packed toothed pattern formed on the outer peripheral surface of the single pin 33. In other embodiments, the anti-slip structure 312 can also be an anti-slip texture on the outer peripheral surface of the single pin 33, or a rubber pad or other component fitted onto the single pin 33. No limitation is made here.

[0188] In this embodiment, as shown in Figures 49 and 51, a first sealing groove 40 is formed on the outer wall of the male connector 111, circumferentially surrounding it. The first sealing groove 40 is located between the end face of the insertion end of the male connector 111 and the limiting groove 31. The first sealing groove 40 contains a first sealing ring 4 that seals with the female connector 114. Similarly, a first sealing groove 40 is also formed on the outer wall of the male connector 113, circumferentially surrounding it. The first sealing groove 402 is located between the end face of the insertion end of the male connector 113 and the limiting groove 31. The first sealing groove 40 contains a first sealing ring 4 that seals with the female connector 112. The first sealing ring 4 can be an O-ring. The first sealing ring 4 has a thicker wire diameter and is closer to the end faces of the male connector 113 and the male connector 111. It is mainly used for sealing between the side walls of the male connector 113 and the female connector 112, and between the side walls of the male connector 111 and the female connector 114, to prevent liquid leakage from gaps.

[0189] As shown in Figures 49 and 51, a second sealing groove 50 is provided on the outer wall of both the male connector 111 and the male connector 113, circumferentially surrounding each other. The second sealing groove 50 and the first sealing groove 40 are respectively located on both sides of the limiting groove 31. A second sealing ring 5 is placed inside the second sealing groove 50. The second sealing ring 5 has a thinner wire diameter than the first sealing ring 4, providing a second layer of protection for the seal between the male connector 113 and the female connector 112, as well as the seal between the male connector 111 and the female connector 114, mainly serving a dustproof function.

[0190] Since the small-diameter ends of the male connector 111 and the male connector 113 have the same structure, for the sake of simplicity, the limiting groove 31, the first sealing groove 40, the second sealing groove 50, the first sealing ring 4, and the second sealing ring 5 on the male connector 111 use the same reference numerals as the limiting groove 31, the first sealing groove 40, the second sealing groove 50, the first sealing ring 4, and the second sealing ring 5 on the male connector 113.

[0191] Example 19

[0192] The quick-install valve provided in this embodiment has a basically the same structure as the quick-install valve provided in Embodiment 18, and the similarities will not be repeated. The main difference is that, referring to Figures 52 and 53, in this embodiment, the pin 33 is a U-shaped pin. Two parallel insertion holes 32 are respectively opened on the female end 112 and the female connector 114. The two free ends of the U-shaped pin 33 pass through the corresponding insertion holes 32 and are simultaneously confined within the limiting groove 31. Part of the U-shaped pin 33 protrudes outside the insertion holes 32, and the U-shaped pin 33 is also installed horizontally. In this way, the axial fixed connection between the male connector 113 and the female end 112, as well as the axial fixed connection between the female connector 114 and the male end 111, can be achieved. Furthermore, the part of the U-shaped pin 33 protruding outside the insertion holes 32 can serve as the force application position when pulling out, making disassembly and assembly convenient and quick.

[0193] Figure 53 only shows a schematic diagram of the connection between the male terminal 111 and the female terminal 114 via the U-shaped pin 33. The structure of the connection between the female terminal 112 and the male terminal 113 via the U-shaped pin 33 is exactly the same as that in Figure 53, so it will not be shown in the figure again.

Claims

1. A plug-in structure, comprising: First tube The first pipe connector (12), the second pipe connector (22), and the plug-in unit are provided; wherein the first pipe connector (12) is configured to be formed at one end of the first component (1), and the second pipe connector (22) is configured to be formed at one end of the second component (2); The insertion unit is configured to axially limit the first pipe joint (12) and the second pipe joint (22) to connect the first component (1) and the second component (2) when the second pipe joint (22) extends into the first pipe joint (12); the insertion unit includes a limiting groove (31), a socket (32) and a pin (33), the socket (32) is opened in the first pipe joint (12) and penetrates the inner wall of the first pipe joint (12); the limiting groove (31) is opened in the outer wall of the second pipe joint (22), and the pin (33) passes through the socket (32) and is limited in the limiting groove (31).

2. The plug-in structure according to claim 1, wherein, The insertion hole (32) and the limiting groove (31) intersect.

3. The plug-in structure according to claim 2, wherein, The limiting groove (31) surrounds the outer wall of the second pipe joint (22), and the plane of the limiting groove (31) is perpendicular to the axial direction of the second pipe joint (22).

4. The plug-in structure according to claim 3, wherein, The first pipe connector (12) includes a main body (121) and a boss (122) protruding from the main body (121), and the insertion hole (32) is formed in the boss (122).

5. The plug-in structure according to claim 4, wherein: The boss (122) extends tangentially along the first pipe connector (12), and the end face (1220) of the boss (122) is flat; the insertion hole (32) is arranged tangentially along the second pipe connector (22) and penetrates the inner wall of the main body (121), and the port of the insertion hole (32) is opened on the end face (1220) of the boss (122).

6. The plug-in structure according to claim 2, wherein, The pin (33) has an action section (330) that passes through the insertion hole (32) and the side of the action section (330) is confined within the limiting groove (31).

7. The plug-in structure according to claim 1, wherein, The first pipe connector (12) is configured to have a stepped surface (200) at the junction with the first main pipe (11) of the first component (1). When the second end face (220) of the second pipe connector (22) abuts against the stepped surface (200), the insertion hole (32) and the limiting groove (31) are aligned axially. Alternatively, the second pipe connector (22) is configured to have a stepped surface (200) at the junction with the second main pipe of the second component (2). When the first end face (120) of the first pipe connector (12) abuts against the stepped surface (200), the insertion hole (32) and the limiting groove (31) are aligned axially.

8. The plug-in structure according to claim 1 further includes: A first sealing ring (4) and / or a second sealing ring (5), wherein the first sealing ring (4) is located between the limiting groove (31) and the second end face (220) of the second pipe joint (22), and the second sealing ring (5) is located between the limiting groove (31) and the first end face (120) of the first pipe joint (12).

9. The plug-in structure according to claim 1, wherein, The first pipe connector (12) includes a large inner hole section (123) and a small inner hole section (124) sequentially from the first end face (120). A step (125) is formed at the junction of the large inner hole section (123) and the small inner hole section (124). The insertion hole (32) is provided on the large inner hole section (123). The second pipe connector (22) includes a sealing section (221) and a limiting section (222) sequentially from the second end face (220). The limiting groove (31) is opened in the limiting section (222), and the sealing section (221) is sealed and inserted into the small inner hole section (124).

10. The plug-in structure according to claim 9, wherein, The inner wall of the small inner hole section (124) is circular, and a first sealing ring (4) is fitted on the sealing section (221). The outer diameter of the first sealing ring (4) is smaller than the inner diameter of the large inner hole section (123).

11. The plug-in structure according to claim 9, wherein, The limiting section (222) includes a radial limiting part (2220) adapted to the inner wall of the large inner hole section (123). The outer wall size of the radial limiting part (2220) is larger than the outer wall size of the sealing section (221), and a second sealing ring (5) is fitted on the radial limiting part (2220). The limiting groove (31) is located between the sealing section (221) and the radial limiting part (2220).

12. The plug-in structure according to claim 9, wherein: The step (125) is a conical surface or an arc surface.

13. The plug-in structure according to any one of claims 1-11, wherein, The pin (33) is threaded into the socket (32).

14. The plug-in structure according to claim 13, wherein, The port of the socket (32) is a threaded interface (25); The pin (33) includes a hand-tightening part (331), a threaded part (332) and a plug-in part (333) connected in sequence. The hand-tightening part (331) is exposed on the threaded interface (25) and is provided with an anti-slip structure (312). The threaded part (332) is threadedly connected to the threaded interface (25).

15. The plug-in structure according to claim 14, wherein, The second pipe connector (22) has a second circumferential limiting part (2200) on its outer wall, and the first pipe connector (12) has a first circumferential limiting part (1200) on its inner wall. The second circumferential limiting part (2200) cooperates with the first circumferential limiting part (120) to circumferentially limit the first pipe connector (11) and the second pipe connector (22) that are connected by insertion.

16. The plug-in structure according to claim 15, wherein, The second circumferential limiting part (2200) is an outer polygonal part formed on the outer wall of the second pipe joint (22), and the first circumferential limiting part (1200) is an inner polygonal part formed on the inner wall of the first pipe joint (12). The inner polygonal part is adapted to the outer polygonal part, and the inner polygonal part is sleeved on the outer polygonal part and circumferentially limited with the outer polygonal part.

17. The plug-in structure according to claim 16, wherein, The second end face (220) of the second pipe connector (22) is the first end (23), the end of the second pipe connector (22) away from the second end face (220) is the second end (24), the first end face (120) of the first pipe connector (12) is the third end (13), and the end of the first pipe connector (12) away from the first end face (120) is the fourth end (14). The outer polygonal portion is located at the first end (23), and the inner polygonal portion is located at the fourth end (14); or, the outer polygonal portion is located at the second end (24), and the inner polygonal portion is located at the third end (13).

18. The plug-in structure according to claim 6, wherein, The actuating segment can abut against the groove wall of the limiting groove (31) on the side of the second end face (220) of the second pipe joint (22) to limit the insertion of the first pipe joint (12) and the second pipe joint (22) in the axial direction; the maximum dimension of the actuating segment in the axial direction of the second pipe joint (22) is smaller than the dimension of the limiting groove (31) in the axial direction of the second pipe joint (22).

19. The plug-in structure according to claim 18, wherein, The outer wall of the second pipe joint (22) is provided with a stepped surface (200), and the stepped surface (200) is located on the side of the limiting groove (31) away from the second end face (220) of the second pipe joint (22); When the plug-in structure includes a first sealing ring (4), the number of the first sealing ring (4) is at least one, and it is located between the limiting groove (31) and the second end face (220) of the second pipe joint (22).

20. The plug-in structure according to claim 1, wherein, The pin (33) is inserted horizontally into the socket (32).

21. The plug-in structure according to claim 1, wherein, The pin (33) is a single pin or a U-shaped pin; When the pin (33) is a U-shaped pin, each of the two opposite sides of the first pipe connector (12) is provided with a socket (32), and the two free ends of the U-shaped pin are respectively inserted into the corresponding socket (32) and confined in the limiting groove (31), with part of the U-shaped pin exposed outside the socket (32).

22. A quick-install valve, suitable for the plug-in structure according to any one of claims 1 to 21, comprising: The valve body (6) and the connecting ends (61) located at both ends of the valve body (6) are connected to other components through the plug-in structure.

23. The quick-install valve according to claim 22, wherein, Both of the connection ends (61) are formed as the first pipe joint (12) of the plug-in structure, or both are formed as the second pipe joint (22) of the plug-in structure, or are formed as the first pipe joint (12) and the second pipe joint (22) of the plug-in structure respectively.

24. The quick-install valve according to claim 22, wherein, The quick-install valve is a ball valve, gate valve, globe valve, check valve, or pressure reducing valve.

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