Valve connecting structure and valve assembly

Abstract

The utility model relates to the technical field of valves, and discloses a valve connecting structure and a valve assembly, the valve connecting structure is used for connecting a first valve and a second valve, the first valve is provided with a sleeving part, the second valve is provided with an inserting part, and the sleeving part can be sleeved on the outer side of the inserting part and is communicated with the inserting part; the valve connecting structure comprises lug structures correspondingly arranged on the inserting part and the sleeving part, and the corresponding lug structures are connected through a connecting assembly so that the first valve can be connected with the second valve. According to the valve connecting structure, the first valve and the second valve are connected, the valve connecting structure comprises the convex lug structures correspondingly arranged on the inserting part and the sleeving part, and the corresponding convex lug structures are connected through the connecting assembly, so that the first valve and the second valve are directly connected in a butt joint mode, and the connecting mode replaces a double nipple joint threaded connection mode; the installation efficiency is greatly improved, the installation difficulty is reduced, and the leakage-proof effect is good.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve connection structure and valve assembly. Background Technology

[0002] Valves are widely used in various industries. To meet the needs of complex working conditions, it is sometimes necessary to use two or more valves in series.

[0003] The existing valve connections use threaded couplings, for example: in Figure 1 In the structure shown, a threaded connector 300 is provided between the gate valve 100 on the left and the check valve 200 on the right. One end of the threaded connector 300 is threaded to the gate valve 100, and the other end of the threaded connector 300 is threaded to the check valve 200. Both threaded connections need to be wrapped with PTFE tape. The wrapping of PTFE tape is highly dependent on the worker's experience. If too much tape is wrapped, it will be impossible to connect. If too little tape is wrapped, it will cause leakage. Both installation and disassembly are quite cumbersome. Utility Model Content

[0004] The purpose of this utility model is to propose a valve connection structure and valve assembly, which solves the technical problems of easy leakage and cumbersome installation and disassembly when connecting valves with threaded joints and PTFE tape.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a valve connection structure for connecting a first valve and a second valve. The first valve is provided with a sleeve portion, and the second valve is provided with a plug portion. The sleeve portion can be sleeved on the outside of the plug portion and communicates with the plug portion. The valve connection structure includes lug structures correspondingly provided on the plug portion and the sleeve portion. The corresponding lug structures are connected by a connecting component to connect the first valve and the second valve.

[0007] The valve connection structure connects the first valve and the second valve. The valve connection structure includes lug structures corresponding to the plug part and the socket part. The corresponding lug structures are connected by the connecting components, thereby directly connecting the first valve and the second valve. This connection method replaces the threaded connection method of the threaded joint, which greatly speeds up the installation efficiency and reduces the installation difficulty.

[0008] As a preferred embodiment of the valve connection structure described above, a sealing structure is provided between the insertion part and the sleeve part.

[0009] The sealing structure is designed to seal the first and second valves, preventing leakage at the connection.

[0010] As a preferred embodiment of the valve connection structure described above, the insertion part and the sleeve part are sealed at their end faces by the sealing structure.

[0011] The insertion part and the socket part are sealed at the end face through a sealing structure to achieve a better seal between the insertion part and the socket part.

[0012] As a preferred embodiment of the above-mentioned valve connection structure, the end of the first valve protrudes to form the sleeve portion, and the end of the first valve and located on the inner periphery of the sleeve portion form a first step; the end of the second valve protrudes to form the insertion portion, and the end of the second valve and located on the outer periphery of the insertion portion form a second step.

[0013] The sealing structure includes a first sealing element disposed between the insertion portion and the first step, and / or a second sealing element disposed between the sleeve portion and the second step.

[0014] By using the first and / or second sealing elements in conjunction with the first and second steps, the connection between the first and second valves can be sealed at the end face, achieving a good sealing effect.

[0015] As a preferred embodiment of the above-mentioned valve connection structure, a first sealing groove is provided on one of the end face of the plug and the first step, and the first sealing element is installed in the first sealing groove.

[0016] A second sealing groove is provided on one of the end faces of the sleeve and the second step, and the second sealing element is installed in the second sealing groove.

[0017] The first sealing groove and the second sealing groove are provided for installing the first sealing element and the second sealing element, and can also limit the first sealing element and the second sealing element to prevent them from shifting.

[0018] As a preferred embodiment of the above-mentioned valve connection structure, the connection assembly includes:

[0019] The connector and the locking member are provided. The connector passes through the two corresponding lug structures, and the locking member is installed on the connector and can lock the two corresponding lug structures.

[0020] The connecting component is inserted through the connector onto the corresponding lug structure, and the locking component is installed on the connector, thereby locking the two corresponding lug structures.

[0021] As a preferred embodiment of the valve connection structure described above, the lug structure is provided with a fixing hole, the connecting member is a bolt, the locking member is a nut, the bolt passes through the fixing holes on the corresponding two lug structures, and the nut is threadedly connected to the bolt to lock the corresponding two lug structures.

[0022] The connecting parts are bolts, and the locking parts are nuts. When it is necessary to fix the first valve and the second valve, simply pass the bolt through the corresponding lug structure on the first valve and the second valve, and then tighten the nut onto the bolt. The assembly is relatively convenient, and the structure of the connecting components is relatively simple.

[0023] As a preferred embodiment of the valve connection structure described above, the extension direction of the bolt is parallel to the axial direction of the insertion portion and the sleeve portion.

[0024] The above setup allows for adjustment of the clamping force between the plug and the socket by tightening the nut.

[0025] As a preferred embodiment of the valve connection structure described above, the two corresponding lug structures form a lug assembly, and the insertion part and the sleeve part are connected by at least two sets of lug assemblies, with each set of lug assemblies spaced apart along the circumferential direction of the insertion part and the sleeve part.

[0026] The first valve and the second valve are connected by at least two sets of lug assemblies, with each set of lug assemblies spaced apart along the circumferential direction of the insertion part and the socket part, thereby improving the connection strength between the first valve and the second valve.

[0027] This utility model also provides a valve assembly, including a first valve, a second valve, and a valve connection structure as described above for connecting the first valve and the second valve.

[0028] This valve assembly connects the first valve and the second valve through the valve connection structure described above, which improves installation efficiency, reduces installation difficulty, and provides good leak prevention.

[0029] The beneficial effects of this utility model are:

[0030] The valve connection structure proposed in this utility model connects a first valve and a second valve. The valve connection structure includes lug structures correspondingly disposed on the insertion part and the sleeve part. The corresponding lug structures are connected by a connecting component, thereby directly connecting the first valve and the second valve. This connection method replaces the threaded connection method of the threaded joint, which greatly speeds up the installation efficiency, reduces the installation difficulty, and has a better leak-proof effect.

[0031] The valve assembly proposed in this utility model connects the first valve and the second valve through the above-mentioned valve connection structure, which improves installation efficiency, reduces installation difficulty, and has a good leak-proof effect. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the connection structure of gate valves and check valves in the prior art;

[0033] Figure 2 This is a schematic diagram of the valve assembly provided by this utility model;

[0034] Figure 3 This is a top view of the valve assembly provided by this utility model;

[0035] Figure 4 yes Figure 3 A cross-sectional view along the AA direction;

[0036] Figure 5 This is a cross-sectional view of the first and second valves of the valve assembly provided by this utility model before installation;

[0037] Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0038] In the picture:

[0039] 100. Gate valve; 200. Check valve; 300. Threaded fitting;

[0040] 1. First valve; 10. End of the first valve; 11. Socket; 110. First step; 111. First sealing groove; 112. Second sealing groove;

[0041] 2. Second valve; 20. End of the second valve; 21. Insertion part; 210. Second step;

[0042] 3. Valve connection structure; 31. Lug structure; 32. Connection assembly; 321. Connecting part; 322. Locking part;

[0043] 4. First seal; 5. Second seal. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0045] 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.

[0046] 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.

[0047] In the description of this embodiment, the terms "upper," "lower," "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.

[0048] The existing valve connections use threaded couplings, for example: in Figure 1 In the structure shown, a threaded connector 300 is provided between the gate valve 100 on the left and the check valve 200 on the right. One end of the threaded connector 300 is threaded to the gate valve 100, and the other end of the threaded connector 300 is threaded to the check valve 200. Both threaded connections need to be wrapped with PTFE tape. The wrapping of PTFE tape is highly dependent on the worker's experience. If too much tape is wrapped, it will be impossible to connect. If too little tape is wrapped, it will cause leakage. Both installation and disassembly are quite cumbersome.

[0049] To solve the above technical problems, such as Figures 2-5As shown, this embodiment provides a valve connection structure 3 for connecting a first valve 1 and a second valve 2. The first valve 1 has a sleeve portion 11, and the second valve 2 has a plug portion 21. Both the sleeve portion 11 and the plug portion 21 are cylindrical structures. The sleeve portion 11 can fit over the outside of the plug portion 21 and communicate with it. The valve connection structure 3 includes lug structures 31 corresponding to the plug portion 21 and the sleeve portion 11. The corresponding lug structures 31 are connected by a connecting assembly 32 to directly connect the first valve 1 and the second valve 2. This connection method replaces the threaded connection method of a threaded joint, greatly speeding up the installation efficiency, reducing the installation difficulty, and providing better leak prevention.

[0050] It should be noted that the first valve 1 and the second valve 2 can be the same type of valve or different types of valves. In this embodiment, the first valve 1 is a gate valve and the second valve 2 is a check valve. In other embodiments, the first valve 1 and the second valve 2 can be other types of valves, which are not specifically limited here, as long as the valve connection structure 3 enables the connection of two types of valves or two valves.

[0051] Optionally, a sealing structure is provided between the plug-in portion 21 and the socket portion 11. This sealing structure enables the sealing of the first valve 1 and the second valve 2, preventing leakage at the connection. In this embodiment, the plug-in portion 21 and the socket portion 11 are sealed at their end faces using the sealing structure, achieving a better seal between them. In other embodiments, the sealing is not limited to end faces; a circumferential seal can also be used, where the outer periphery of the plug-in portion 21 and the inner periphery of the socket portion 11 are sealed using the sealing structure.

[0052] Specifically, such as Figures 4-6 As shown, the end 10 of the first valve 1 protrudes to form a sleeve portion 11, and the end 10 of the first valve 1, located on the inner periphery of the sleeve portion 11, forms a first step 110; the end 20 of the second valve 2 protrudes to form a plug portion 21, and the end 20 of the second valve 2, located on the outer periphery of the plug portion 21, forms a second step 210; the sealing structure includes a first sealing member 4 disposed between the plug portion 21 and the first step 110, and / or a second sealing member 5 disposed between the sleeve portion 11 and the second step 210. A first sealing groove 111 is provided on one of the plug portion 21 and the first step 110, and the first sealing member 4 is installed in the first sealing groove 111; a second sealing groove 112 is provided on one of the sleeve portion 11 and the second step 210, and the second sealing member 5 is installed in the second sealing groove 112. The first sealing groove 111 and the second sealing groove 112 are provided for installing the first sealing element 4 and the second sealing element 5, and can also limit the first sealing element 4 and the second sealing element 5 to prevent them from shifting.

[0053] In this embodiment, a first sealing groove 111 is provided on the first step 110, and a second sealing groove 112 is provided on the end face of the sleeve portion 11. That is, both the first sealing groove 111 and the second sealing groove 112 are provided on the first valve 1. When grooving, only one valve needs to be fixed, which improves the efficiency of grooving. In other embodiments, it is not limited to providing both the first sealing groove 111 and the second sealing groove 112 on the first valve 1. They can also be provided on two valves, or one sealing groove can be provided on one valve.

[0054] Optionally, the first sealing element 4 and the second sealing element 5 can be a sealing ring, a sealing gasket, etc. In this embodiment, both the first sealing element 4 and the second sealing element 5 are selected as O-rings.

[0055] Optionally, the connecting assembly 32 includes a connector 321 and a locking member 322. The connector 321 passes through two corresponding lug structures 31, and the locking member 322 is installed on the connector 321 and can lock the two corresponding lug structures 31. In this embodiment, the connector 321 is a bolt, and the locking member 322 is a nut. The lug structure 31 is provided with a fixing hole. The bolt passes through the fixing hole on the two corresponding lug structures 31, and the nut is threaded onto the bolt to lock the two corresponding lug structures 31. When it is necessary to fix the first valve 1 and the second valve 2, it is only necessary to pass the bolt through the corresponding lug structures 31 on the first valve 1 and the second valve 2, and then tighten the nut onto the bolt. The assembly is relatively convenient, and the structure of the connecting assembly 32 is relatively simple.

[0056] Preferably, the extension direction of the bolt is parallel to the axial direction of the insertion part 21 and the sleeve part 11. The tightening force between the insertion part 21 and the sleeve part 11 can be adjusted by turning the nut. The tightening force will cause the insertion part 21 and the sleeve part 11 to press against the sealing ring between them, thereby improving the sealing effect.

[0057] like Figure 2 and Figure 3As shown, two corresponding lug structures 31 form a lug assembly. The insertion part 21 and the sleeve part 11 are connected by at least two lug assemblies. Each lug assembly is spaced apart along the circumferential direction of the insertion part 21 and the sleeve part 11, thereby improving the connection strength of the first valve 1 and the second valve 2. Preferably, each lug assembly is equally spaced along the circumferential direction of the insertion part 21 and the sleeve part 11, which can achieve a better connection effect for the first valve 1 and the second valve 2 and avoid local loose connections due to uneven distribution of lug assemblies. In this embodiment, two sets of lug assemblies are provided, and the two sets of lug assemblies are equally spaced along the circumferential direction of the insertion part 21 and the sleeve part 11. The two sets of lug assemblies can connect and fix the first valve 1 and the second valve 2, preventing relative axial and radial movement between them. In other embodiments, the lug assembly is not limited to two sets, but can also be three, four or more sets, depending on the requirements.

[0058] In this embodiment, the plug-in part 21 and its lug structure 31 are integrated into one piece, and the sleeve part 11 and its lug structure 31 are integrated into one piece, which reduces the number of parts and improves assembly efficiency.

[0059] When the first valve 1 and the second valve 2 are connected through the valve connection structure 3 described above, due to the setting of the first sealing element 4 and the second sealing element 5, the greater the tightening force of the nut, the tighter the seal, which can ensure that the first valve 1 and the second valve 2 will not move relative to each other in the radial and axial directions.

[0060] like Figure 1 As shown, this embodiment also provides a valve assembly, including a first valve 1, a second valve 2, and a valve connection structure 3 as described above for connecting the first valve 1 and the second valve 2. The valve connection structure 3 enables the connection of the first valve 1 and the second valve 2. The corresponding lug structure 31 is connected via a connection assembly 32 to directly connect the first valve 1 and the second valve 2. This connection method replaces the threaded connection method, greatly accelerating installation efficiency, reducing installation difficulty, and providing better leak prevention.

[0061] 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 various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments 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 valve connection structure, characterized in that, The valve connection structure (3) is used to connect a first valve (1) and a second valve (2). The first valve (1) is provided with a sleeve part (11), and the second valve (2) is provided with a plug part (21). The sleeve part (11) can be sleeved on the outside of the plug part (21) and communicate with the plug part (21). The valve connection structure (3) includes a lug structure (31) corresponding to the plug part (21) and the sleeve part (11). The corresponding lug structure (31) is connected by a connecting component (32) to connect the first valve (1) and the second valve (2).

2. The valve connection structure according to claim 1, characterized in that, A sealing structure is provided between the insertion part (21) and the sleeve part (11).

3. The valve connection structure according to claim 2, characterized in that, The insertion part (21) and the sleeve part (11) are sealed at their end faces by the sealing structure.

4. The valve connection structure according to claim 3, characterized in that, The end (10) of the first valve (1) protrudes to form the sleeve portion (11), and the end (10) of the first valve (1) and the inner periphery of the sleeve portion (11) form a first step (110); the end (20) of the second valve (2) protrudes to form the plug portion (21), and the end (20) of the second valve (2) and the outer periphery of the plug portion (21) form a second step (210); The sealing structure includes a first seal (4) disposed between the insertion portion (21) and the first step (110), and / or a second seal (5) disposed between the sleeve portion (11) and the second step (210).

5. The valve connection structure according to claim 4, characterized in that, A first sealing groove (111) is provided on one of the end face of the plug part (21) and the first step (110), and the first sealing member (4) is installed in the first sealing groove (111). A second sealing groove (112) is provided on one of the end face of the sleeve (11) and the second step (210), and the second sealing member (5) is installed in the second sealing groove (112).

6. The valve connection structure according to any one of claims 1-5, characterized in that, The connection component (32) includes: The connector (321) and the locking member (322) are provided, wherein the connector (321) is inserted through the corresponding two lug structures (31), and the locking member (322) is installed on the connector (321) and can lock the corresponding two lug structures (31).

7. The valve connection structure according to claim 6, characterized in that, The lug structure (31) is provided with a fixing hole, the connector (321) is a bolt, the locking member (322) is a nut, the bolt passes through the fixing hole on the corresponding two lug structures (31), and the nut is threaded to the bolt to lock the corresponding two lug structures (31).

8. The valve connection structure according to claim 7, characterized in that, The extension direction of the bolt is parallel to the axial direction of the insertion part (21) and the sleeve part (11).

9. The valve connection structure according to any one of claims 1-5, characterized in that, The two corresponding lug structures (31) form a lug assembly. The plug part (21) and the socket part (11) are connected by at least two lug assemblies. Each lug assembly is spaced apart along the circumferential direction of the plug part (21) and the socket part (11).

10. A valve assembly, characterized in that, It includes a first valve (1), a second valve (2), and a valve connection structure (3) as described in any one of claims 1-9 for connecting the first valve (1) and the second valve (2).

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