Plug-in structure
By setting an abutment surface and a limiting element in the inner wall of the pipe fitting, the problems of pipe connection sealing and operation complexity are solved, realizing convenient installation and disassembly and enhancing sealing performance.
Patent Information
- Application Number
- CN202423197646.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In existing technologies, the sealing of pipe connections is difficult to guarantee, and the installation and disassembly operations are complicated, making it difficult to achieve convenient connections, especially in space-constrained situations.
The device employs a plug-in structure, including a first component and a second component pipe joint. By providing an abutment surface and a limiting element on the inner wall of the second pipe joint, the plug-in position is restricted, and a gap is left during plug-in to facilitate disassembly. Combined with a sealing ring, the device ensures a tight seal.
It enables convenient installation and disassembly of pipelines, enhances sealing performance, simplifies operation procedures, and enables efficient connection, especially in space-constrained situations.
Smart Images
Figure CN223499051U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline connection technology, and in particular to a plug-in structure. Background Technology
[0002] In existing technologies, pipes are typically connected by threads. To ensure a tight seal, PTFE tape is usually wrapped around the threaded joint. If the tape is wrapped too thickly, the two pipes cannot be properly aligned; if it is wrapped too thinly, leaks are likely to occur. Furthermore, to ensure a tight fit, this connection method requires the use of tools such as wrenches during actual installation. When installation space is limited, this often increases the difficulty of operation and significantly impacts installation efficiency.
[0003] In related technologies, in order to facilitate the connection between two pipes, they can also be connected by plugging. However, when two pipes are connected by plugging, there is a lack of space for plugging, which makes it impossible to effectively install and disassemble the pipes.
[0004] Therefore, a plug-in structure is urgently needed to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a plug-in structure to facilitate the installation and disassembly of the plug-in structure.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A plug-in structure, comprising:
[0008] A first component, the first component including a first pipe fitting;
[0009] The second component includes a second pipe connector, wherein the first pipe connector is inserted into the second pipe connector, and the inner wall of the second pipe connector is provided with a first abutment surface, which can abut against the end face of the first pipe connector to limit the movement of the second pipe connector toward the extreme position close to the first pipe connector; and
[0010] A first limiting member is configured to lock the insertion positions of the second pipe connector and the first pipe connector, and when the first limiting member locks the insertion positions of the second pipe connector and the first pipe connector, there is a gap between the first abutting surface and the end face of the first pipe connector.
[0011] As an optional solution, the first contact surface is an annular contact surface.
[0012] As an optional solution, the first limiting member includes a first pin, the second pipe joint has a through first insertion hole in its pipe wall, the outer peripheral wall of the first pipe joint has a first limiting groove, and the first pin passes through the first insertion hole and is engaged in the first limiting groove.
[0013] As an optional solution, the second component further includes:
[0014] The first sealing ring is sandwiched between the second pipe joint and the first pipe joint, and the first sealing ring is located between the end face of the first pin and the first pipe joint.
[0015] The second sealing ring is sandwiched between the second pipe joint and the first pipe joint, and the second sealing ring is located between the end face of the first pin and the second pipe joint.
[0016] As an optional solution, the outer wall of the second pipe joint is provided with a first protrusion, and the first protrusion has a through hole.
[0017] As an optional embodiment, the second component further includes a third pipe connector coaxially connected with the second pipe connector, and the plug-in structure further includes a third component, the third component including a fourth pipe connector, the third pipe connector being plugged into and connected with the fourth pipe connector, and when the first abutting surface abuts against the end face of the first pipe connector, there is a gap between the end face of the third pipe connector and the end face of the fourth pipe connector.
[0018] As an optional solution, the insertion structure further includes a second limiting member. The inner wall of the third pipe connector or the outer peripheral wall of the third pipe connector is provided with a second abutting surface. The second abutting surface can abut against the end face of the fourth pipe connector. When the second abutting surface abuts against the end face of the fourth pipe connector, the second limiting member can lock the insertion position of the third pipe connector and the fourth pipe connector.
[0019] As an optional solution, the second limiting member includes a second pin, one of the pipe walls of the third pipe joint and the fourth pipe joint is provided with a through second insertion hole, and the other of the pipe walls of the third pipe joint and the fourth pipe joint is provided with a second limiting groove, and the second pin passes through the second insertion hole and is engaged in the second limiting groove.
[0020] As an optional solution, the second component further includes:
[0021] The third sealing ring is sandwiched between the third pipe joint and the fourth pipe joint, and the third sealing ring is located between the end face of the second pin and the third pipe joint.
[0022] A fourth sealing ring is sandwiched between the third pipe joint and the fourth pipe joint, and the fourth sealing ring is located between the end face of the second pin and the fourth pipe joint.
[0023] Alternatively, the first component may be a pipe fitting or a valve; and / or
[0024] The second component is a pipe fitting or a valve; and / or
[0025] The third component is a pipe or valve.
[0026] The beneficial effects of this utility model are:
[0027] This utility model provides a plug-in structure, which includes a first component, a second component, and a first limiting member. The first component includes a first pipe connector, and the second component includes a second pipe connector. The first pipe connector is plugged into the second pipe connector. The inner wall of the second pipe connector is provided with a first abutting surface, which can abut against the end face of the first pipe connector to limit the extreme position of the second pipe connector moving closer to the first pipe connector. The first limiting member is used to lock the plug-in position of the second pipe connector and the first pipe connector. When the first limiting member locks the plug-in position of the second pipe connector and the first pipe connector, there is a gap between the first abutting surface and the end face of the first pipe connector.
[0028] The plug-in structure provided by this utility model allows for easy installation by inserting the first pipe connector into the second pipe connector and locking the insertion positions of the second and first pipe connectors using the first limiting member. When disassembly is required, the first limiting member is unlocked, and the insertion positions of the second and first pipe connectors are adjusted so that the second pipe connector moves closer to the first pipe connector until the first contact surface contacts the end face of the first pipe connector. This allows for sufficient disassembly space between the second component and other connecting pipes, making the installation and disassembly of the plug-in structure more convenient. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the plug-in structure provided in this embodiment of the utility model;
[0030] Figure 2 This is a cross-sectional view of the plug-in structure provided in this embodiment of the utility model;
[0031] Figure 3 This is a schematic diagram of the structure of the second component provided in an embodiment of the present utility model;
[0032] Figure 4 This is a schematic diagram of the valve body provided in an embodiment of the present invention;
[0033] Figure 5 This is a schematic diagram of the structure of the fourth pipe connector provided in this embodiment of the utility model.
[0034] In the picture:
[0035] 10. Second component; 20. First pipe connector; 201. First limiting groove; 202. First annular mounting groove; 30. Fourth pipe connector; 301. Second protrusion; 3011. Second insertion hole; 21. First limiting member; 22. Second limiting member;
[0036] 1. Valve body; 11. Second pipe connector; 111. First abutment surface; 112. First boss; 1121. First insertion hole; 12. Third pipe connector; 121. Second abutment surface; 122. Second limiting groove; 123. Second annular mounting groove; 13. Fifth pipe connector; 14. First sealing ring; 15. Second sealing ring; 16. Third sealing ring; 17. Fourth sealing ring;
[0037] 3. Gate; 4. Valve cover; 5. Valve stem; 6. Rotary handwheel; 7. Compression nut; 8. Sealing packing; 91. Fifth sealing ring; 92. Sixth sealing ring. Detailed Implementation
[0038] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0039] In the description of this utility model, unless otherwise explicitly 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 specific meaning of the above terms in this utility model based on the specific circumstances.
[0040] In this invention, unless otherwise explicitly 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 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 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.
[0041] 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0042] like Figure 1 and Figure 2 As shown, this embodiment provides a plug-in structure, which includes a first component, a second component 10, and a first limiting member 21. The first component includes a first pipe connector 20, and the second component 10 includes a second pipe connector 11. The first pipe connector 20 is plugged into the second pipe connector 11. The inner wall of the second pipe connector 11 is provided with a first abutting surface 111. The first abutting surface 111 can abut against the end face of the first pipe connector 20 to limit the extreme position of the second pipe connector 11 moving closer to the first pipe connector 20. The first limiting member 21 is used to lock the plug-in position of the second pipe connector 11 and the first pipe connector 20. When the first limiting member 21 locks the plug-in position of the second pipe connector 11 and the first pipe connector 20, there is a gap between the first abutting surface 111 and the end face of the first pipe connector 20.
[0043] The plug-in structure provided in this embodiment allows for installation by plugging the second pipe connector 11 into the first pipe connector 20, and then locking the plug-in positions of the second pipe connector 11 and the first pipe connector 20 by the first limiting member 21. When disassembly is required, the first limiting member 21 is unlocked, and the plug-in positions of the second pipe connector 11 and the first pipe connector 20 are adjusted so that the second pipe connector 11 moves closer to the first pipe connector 20 until the first abutting surface 111 abuts against the end face of the first pipe connector 20. This provides a certain amount of disassembly space between the second component 10 and other connecting pipes, making the installation and disassembly of the plug-in structure more convenient.
[0044] Optionally, in this embodiment, the first abutting surface 111 is an annular abutting surface. By designing the first abutting surface 111 as an annular abutting surface, the area of contact between the first abutting surface 111 and the end face of the first pipe joint 20 is effectively increased, ensuring the reliability of the contact between the first abutting surface 111 and the end face of the first pipe joint 20.
[0045] In this embodiment, as Figure 1 and Figure 2As shown, the second component 10 also includes a third pipe connector 12 coaxially connected to the second pipe connector 11. The insertion structure also includes a third component, which includes a fourth pipe connector 30. The third pipe connector 12 and the fourth pipe connector 30 are inserted and connected. When the first abutting surface 111 abuts against the end face of the first pipe connector 20, there is a gap between the end face of the third pipe connector 12 and the end face of the fourth pipe connector 30. It should be noted that when it is necessary to disassemble the insertion structure, the first limiting member 21 is unlocked, and the insertion position of the second pipe connector 11 and the first pipe connector 20 is adjusted so that the second pipe connector 11 moves towards the first pipe connector 20 until the first abutting surface 111 abuts against the end face of the first pipe connector 20. At this time, since there is a gap between the end face of the third pipe connector 12 and the end face of the fourth pipe connector 30, the disassembly of the third pipe connector 12 and the fourth pipe connector 30 is achieved.
[0046] Optionally, in this embodiment, the second component 10 is a valve; specifically, in this embodiment, the second component 10 is a gate valve. Optionally, in this embodiment, both the first and third components are pipe fittings, and the second component 10 is used to achieve sealing or connection adjustment between the first pipe joint 20 and the fourth pipe joint 30. Optionally, in other embodiments, the second component 10 can also be a ball valve, gate valve, pressure reducing valve, check valve, or filter valve; the specific form of the second component 10 can be adjusted and replaced according to requirements. Optionally, in other embodiments, the second component 10 can also be a pipe fitting. Optionally, in other embodiments, the first component can also be a valve. In other embodiments, the third component can also be a valve.
[0047] In this embodiment, as Figure 1 and Figure 2 As shown, the second pipe joint 11 and the third pipe joint 12 are both part of the valve body 1 in the second component 10. The second component 10 provided in this embodiment also includes a gate 3, a valve cover 4, a valve stem 5, and a rotating handwheel 6. The gate 3 is slidably inserted into the inner cavity of the valve body 1. The gate 3 can slide along the radial direction of the second pipe joint 11 and the third pipe joint 12, thereby blocking or opening the second pipe joint 11 and the third pipe joint 12, and thus enabling the gate 3 to block or open the first pipe joint 20 and the fourth pipe joint 30. The valve cover 4 is sealed to the valve body 1. The valve stem 5 passes through the valve cover 4 and is threaded to the gate 3 at one end. The valve stem 5 can rotate relative to the valve body 1. The rotating handwheel 6 is fixedly connected to the end of the valve stem 5 that extends out of the valve cover 4. With the above configuration, by rotating the handwheel 6, the valve stem 5 can be rotated relative to the valve body 1 and the valve cover 4, so that the gate 3 slides along the valve stem 5 relative to the valve body 1, thereby blocking or opening the first pipe joint 20 and the fourth pipe joint 30.
[0048] In this embodiment, as Figure 1 and Figure 2 As shown, the second component 10 also includes a clamping nut 7, through which the valve stem 5 is rotatably inserted. The clamping nut 7 is threadedly connected to the end of the valve cover 4 away from the valve body 1. A sealing packing 8 is filled between the end of the valve cover 4 and the clamping nut 7, and surrounds the outer periphery of the valve stem 5. By setting the clamping nut 7 and the sealing packing 8, the sealing effect at the point where the valve stem 5 passes through the valve cover 4 is ensured, preventing liquid in the first pipe joint 20 and the fourth pipe joint 30 from leaking out from the end of the valve cover 4 away from the valve body 1 through the valve body 1 and the valve cover 4 in sequence, thereby ensuring the sealing effect of the entire second component 10.
[0049] In this embodiment, as Figure 1 and Figure 2 As shown, the valve body 1 also includes a fifth pipe connector 13. The second pipe connector 11 and the third pipe connector 12 are both connected to the fifth pipe connector 13, and the fifth pipe connector 13 is sealed to the valve cover 4. The valve stem 5 passes through the clamping nut 7 and the valve cover 4 in sequence, and one end of the stem 5 extending into the fifth pipe connector 13 is threadedly connected to the gate 3. It should be noted that in this embodiment, the fifth pipe connector 13 extends in the radial direction along the second pipe connector 11 and the third pipe connector 12.
[0050] Optionally, in this embodiment, as Figure 2 As shown, the second component 10 also includes a fifth sealing ring 91, which is sandwiched between the outer peripheral wall of the valve stem 5 and the inner cavity wall of the valve cover 4. By setting the fifth sealing ring 91, the sealing effect between the valve stem 5 and the valve cover 4 is effectively guaranteed, further avoiding the risk of leakage from the valve cover 4. Optionally, two or more fifth sealing rings 91 can be provided along the axial direction of the valve stem 5. In this embodiment, an annular groove is provided on the outer peripheral wall of the valve stem 5, and the fifth sealing ring 91 is accommodated in the annular groove, ensuring the reliability of the installation of the fifth sealing ring 91 and also ensuring the smooth rotation of the valve stem 5 relative to the valve cover 4. Optionally, in this embodiment, the fifth sealing ring 91 can be an O-ring.
[0051] In this embodiment, as Figure 2 As shown, the second component 10 also includes a sixth sealing ring 92, which is sandwiched between the valve cover 4 and the fifth pipe connector 13. By providing the sixth sealing ring 92, a sealing connection between the valve cover 4 and the valve body 1 is ensured. Optionally, in this embodiment, the sixth sealing ring 92 can be a U-shaped sealing ring.
[0052] In this embodiment, as Figures 2-4As shown, the first limiting member 21 includes a first pin. The wall of the second pipe connector 11 is provided with a through first insertion hole 1121, and the outer peripheral wall of the first pipe connector 20 is provided with a first limiting groove 201. The first pin passes through the first insertion hole 1121 and is engaged in the first limiting groove 201. By providing the first pin and making it pass through the first insertion hole 1121 and engage in the first limiting groove 201, the relative movement between the second pipe connector 11 and the first pipe connector 20 along the axial direction of the second pipe connector 11 is effectively restricted, thereby locking the insertion position of the second pipe connector 11 and the first pipe connector 20. In addition, by designing the first limiting member 21 in the form of a first pin, the structure is simple and the operation is convenient. Optionally, in this embodiment, the first pin is in the form of a single pin. In other embodiments, the first pin may also be in the form of a U-shaped pin. This embodiment does not limit the specific form of the first pin.
[0053] Optionally, in this embodiment, as Figure 2 and Figure 4 As shown, the outer wall of the second pipe connector 11 is provided with a first protrusion 112, and a through first insertion hole 1121 is provided on the first protrusion 112. By providing the protruding first protrusion 112, the extension length of the first insertion hole 1121 can be increased, thereby improving the reliability of the first pin insertion and effectively avoiding the risk of leakage caused by the first insertion hole 1121 penetrating the inner cavity of the second pipe connector 11.
[0054] Optionally, in this embodiment, as Figure 2 As shown, the second component 10 also includes a first sealing ring 14 and a second sealing ring 15. The first sealing ring 14 is sandwiched between the second pipe connector 11 and the first pipe connector 20, and is located between the end faces of the first pin and the first pipe connector 20. The second sealing ring 15 is sandwiched between the second pipe connector 11 and the first pipe connector 20, and is located between the end faces of the first pin and the second pipe connector 11. By providing the first sealing ring 14, the risk of leakage at the insertion position of the first pipe connector 20 and the second pipe connector 11 is avoided, and liquid in the first pipe connector 20 and the second pipe connector 11 is prevented from leaking from the insertion position of the first pin, effectively ensuring the sealing effect of the insertion of the second pipe connector 11 and the first pipe connector 20. Furthermore, by providing the second sealing ring 15, a dustproof effect is achieved at the insertion positions of the second pipe joint 11 and the first pipe joint 20. The first sealing ring 14 and the second sealing ring 15 are arranged at intervals along the axial direction of the second pipe joint 11, effectively ensuring the tightness of the insertion at the two positions of the second pipe joint 11 and the first pipe joint 20 in the axial direction, thereby ensuring the stability and reliability of the insertion and fixing of the second pipe joint 11 and the first pipe joint 20. Optionally, in this embodiment, both the first sealing ring 14 and the second sealing ring 15 are O-rings.
[0055] Optionally, in this embodiment, as Figure 2 As shown, two spaced-apart first annular mounting grooves 202 are provided on the outer peripheral wall of the first pipe joint 20. One of the first annular mounting grooves 202 accommodates the first sealing ring 14, and the other first annular mounting groove 202 accommodates the second sealing ring 15, thereby realizing the reliable installation of the first sealing ring 14 and the second sealing ring 15.
[0056] In this embodiment, as Figure 1 , Figure 3 and Figure 5 As shown, the insertion structure also includes a second limiting member 22. A second abutment surface 121 is provided on the inner wall or outer peripheral wall of the third pipe connector 12. The second abutment surface 121 can abut against the end face of the fourth pipe connector 30. When the second abutment surface 121 abuts against the end face of the fourth pipe connector 30, the second limiting member 22 can lock the insertion position of the third pipe connector 12 and the fourth pipe connector 30. By providing the second abutment surface 121, the extreme position of the fourth pipe connector 30 moving towards the third pipe connector 12 for insertion is limited. Furthermore, by providing the second limiting member 22, the insertion position of the fourth pipe connector 30 and the third pipe connector 12 is locked. It should be noted that when the second component 10 is in the normal assembly state, that is, when both the first limiting member 21 and the second limiting member 22 are in the locked state, there is a gap between the first abutting surface 111 and the end face of the first pipe connector 20, and the second abutting surface 121 abuts against the end face of the fourth pipe connector 30, thereby ensuring that the second pipe connector 11 and the first pipe connector 20 are in a plug-in communication state, and the third pipe connector 12 and the fourth pipe connector 30 are also in a plug-in communication state.
[0057] Optionally, in this embodiment, the second abutment surface 121 is an annular abutment surface. By designing the second abutment surface 121 as an annular abutment surface, the area of contact between the second abutment surface 121 and the end face of the fourth pipe connector 30 is effectively increased, ensuring the reliability of the contact between the second abutment surface 121 and the end face of the fourth pipe connector 30.
[0058] Specifically, in this embodiment, the third pipe connector 12 is inserted into the fourth pipe connector 30, and the outer peripheral wall of the third pipe connector 12 is provided with a second abutment surface 121. In other embodiments, the third pipe connector 12 may also be sleeved on the fourth pipe connector 30, and the inner cavity wall of the third pipe connector 12 may be provided with a second abutment surface 121.
[0059] Optionally, in this embodiment, as Figure 1 , Figure 3 and Figure 5As shown, the second limiting member 22 includes a second pin. One of the pipe walls of the third pipe connector 12 and the fourth pipe connector 30 has a through second insertion hole 3011, and the other of the pipe walls of the third pipe connector 12 and the fourth pipe connector 30 has a second limiting groove 122. The second pin passes through the second insertion hole 3011 and is engaged in the second limiting groove 122. By providing the second pin and ensuring it passes through the second insertion hole 3011 and is engaged in the second limiting groove 122, the relative movement between the third pipe connector 12 and the fourth pipe connector 30 along the axial direction of the third pipe connector 12 is effectively restricted, thus locking the insertion position of the third pipe connector 12 and the fourth pipe connector 30. Furthermore, by designing the second limiting member 22 in the form of a second pin, the structure is simple and the operation is convenient. It should be noted that when it is necessary to disassemble the insertion structure, only the second pin and the first pin need to be removed, making the operation convenient. Optionally, in this embodiment, the second pin is a single pin. In other embodiments, the second pin may also be a U-shaped pin; this embodiment does not limit the specific form of the second pin.
[0060] Optionally, in this embodiment, as Figure 3 and Figure 5 As shown, the third pipe connector 12 has a second limiting groove 122 in its pipe wall, and the fourth pipe connector 30 has a through second insertion hole 3011 in its pipe wall. In other embodiments, the third pipe connector 12 has a through second insertion hole 3011 in its pipe wall, and the fourth pipe connector 30 has a second limiting groove 122 in its pipe wall.
[0061] Optionally, in this embodiment, as Figure 3 and Figure 5 As shown, the outer wall of the third pipe connector 12 is provided with a second limiting groove 122, and the outer wall of the fourth pipe connector 30 is provided with a second protrusion 301, on which a through second insertion hole 3011 is formed. In other embodiments, the outer wall of the fourth pipe connector 30 is provided with a second limiting groove 122, and the outer wall of the third pipe connector 12 is provided with a second protrusion 301. By providing the protruding second protrusion 301, the extension length of the second insertion hole 3011 can be increased, thereby improving the reliability of the second pin insertion and effectively avoiding the risk of leakage caused by the second insertion hole 3011 penetrating the inner cavity of the third pipe connector 12 or the fourth pipe connector 30.
[0062] Optionally, in this embodiment, as Figure 2 and Figure 3As shown, the second component 10 also includes a third sealing ring 16 and a fourth sealing ring 17. The third sealing ring 16 is sandwiched between the third pipe connector 12 and the fourth pipe connector 30, and is located between the second pin and the end face of the third pipe connector 12. The fourth sealing ring 17 is sandwiched between the third pipe connector 12 and the fourth pipe connector 30, and is located between the second pin and the end face of the fourth pipe connector 30. By providing the third sealing ring 16, the risk of leakage at the insertion position of the third pipe connector 12 and the fourth pipe connector 30 is avoided, preventing liquid in the third pipe connector 12 and the fourth pipe connector 30 from leaking from the insertion position of the second pin, effectively ensuring the sealing effect of the insertion of the third pipe connector 12 and the fourth pipe connector 30. Furthermore, by providing a fourth sealing ring 17, a dustproof effect is achieved at the insertion positions of the third pipe connector 12 and the fourth pipe connector 30. The third sealing ring 16 and the fourth sealing ring 17 are arranged at intervals along the axial direction of the third pipe connector 12, effectively ensuring the tightness of the insertion at the two positions of the third pipe connector 12 and the fourth pipe connector 30 in the axial direction, thereby ensuring the stability and reliability of the insertion and fixing of the third pipe connector 12 and the fourth pipe connector 30. Optionally, in this embodiment, both the third sealing ring 16 and the fourth sealing ring 17 are O-rings.
[0063] Optionally, in this embodiment, as Figure 3 As shown, two second annular mounting grooves 123 are provided on the outer peripheral wall of the third pipe joint 12. One of the second annular mounting grooves 123 accommodates a third sealing ring 16, and the other second annular mounting groove 123 accommodates a fourth sealing ring 17, thereby realizing the reliable installation of the third sealing ring 16 and the fourth sealing ring 17.
[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A plug-in structure, characterized in that, include: The first component includes a first pipe fitting (20); The second component (10) includes a second pipe connector (11), into which the first pipe connector (20) is inserted. The inner wall of the second pipe connector (11) is provided with a first abutment surface (111), which abuts against the end face of the first pipe connector (20) to limit the movement of the second pipe connector (11) towards the extreme position close to the first pipe connector (20). A first limiting member (21) is configured to lock the insertion positions of the second pipe connector (11) and the first pipe connector (20), and when the first limiting member (21) locks the insertion positions of the second pipe connector (11) and the first pipe connector (20), there is a gap between the first abutting surface (111) and the end face of the first pipe connector (20).
2. The plug-in structure according to claim 1, characterized in that, The first contact surface (111) is an annular contact surface.
3. The plug-in structure according to claim 1, characterized in that, The first limiting member (21) includes a first pin, the second pipe joint (11) has a through first insertion hole (1121) on its pipe wall, the outer peripheral wall of the first pipe joint (20) has a first limiting groove (201), and the first pin passes through the first insertion hole (1121) and is engaged in the first limiting groove (201).
4. The plug-in structure according to claim 3, characterized in that, The second component (10) also includes: The first sealing ring (14) is sandwiched between the second pipe joint (11) and the first pipe joint (20), and the first sealing ring (14) is located between the end face of the first pin and the first pipe joint (20). The second sealing ring (15) is sandwiched between the second pipe joint (11) and the first pipe joint (20), and the second sealing ring (15) is located between the end face of the first pin and the second pipe joint (11).
5. The plug-in structure according to claim 3, characterized in that, The outer wall of the second pipe joint (11) is provided with a first protrusion (112), and the first protrusion (112) is provided with a through first insertion hole (1121).
6. The plug-in structure according to any one of claims 1 to 5, characterized in that, The second component (10) further includes a third pipe connector (12) coaxially connected with the second pipe connector (11). The plug-in structure further includes a third component, which includes a fourth pipe connector (30). The third pipe connector (12) is plugged into and connected with the fourth pipe connector (30). When the first abutting surface (111) abuts against the end face of the first pipe connector (20), there is a gap between the end face of the third pipe connector (12) and the end face of the fourth pipe connector (30).
7. The plug-in structure according to claim 6, characterized in that, The insertion structure further includes a second limiting member (22). The inner wall of the third pipe connector (12) or the outer peripheral wall of the third pipe connector (12) is provided with a second abutting surface (121). The second abutting surface (121) can abut against the end face of the fourth pipe connector (30). When the second abutting surface (121) abuts against the end face of the fourth pipe connector (30), the second limiting member (22) can lock the insertion position of the third pipe connector (12) and the fourth pipe connector (30).
8. The plug-in structure according to claim 7, characterized in that, The second limiting member (22) includes a second pin. One of the pipe walls of the third pipe connector (12) and the fourth pipe connector (30) is provided with a through second insertion hole (3011). The other of the pipe walls of the third pipe connector (12) and the fourth pipe connector (30) is provided with a second limiting groove (122). The second pin passes through the second insertion hole (3011) and is engaged in the second limiting groove (122).
9. The plug-in structure according to claim 8, characterized in that, The second component (10) also includes: The third sealing ring (16) is sandwiched between the third pipe joint (12) and the fourth pipe joint (30), and the third sealing ring (16) is located between the second pin and the end face of the third pipe joint (12); The fourth sealing ring (17) is sandwiched between the third pipe joint (12) and the fourth pipe joint (30), and the fourth sealing ring (17) is located between the second pin and the end face of the fourth pipe joint (30).
10. The plug-in structure according to claim 6, characterized in that, The first component is a pipe fitting or a valve; and / or The second component (10) is a pipe fitting or a valve; and / or The third component is a pipe or valve.