Gate valve convenient to disassemble and maintain

Abstract

The utility model belongs to the technical field of gate valves, and discloses a gate valve convenient to disassemble and maintain, which comprises a gate valve body, an upper valve cover is fixed at the top of the gate valve body through a bolt, and a large hand wheel fixedly connected with a valve rod is arranged at the top of the upper valve cover; the surface of the water inlet end and the surface of the water outlet end of the gate valve body are each provided with a set of shutoff valves, a quick-release housing and an anti-disengaging ring, the water inlet end and the water outlet end are each composed of a communicating part and a mounting part, and the shutoff valves, the quick-release housings and the anti-disengaging rings are arranged between the communicating parts and the mounting parts; the water inlet end and the water outlet end are closed along with the shutoff valve, then the quick-release housing is rotated through the hand lever, the threaded connection state of the threaded shell of the quick-release housing and the threaded ring of the shutoff valve is released, at the moment, the first sealing ring between the threaded shell and the threaded ring is released, and the second sealing ring between the quick-release housing and the anti-disengaging ring is released. The disassembly of the gate valve is realized on the premise that the water inlet end and the water outlet end are not completely disassembled.

Description

Technical Field

[0001] This application relates to the field of gate valve technology, and more specifically, to a gate valve that is easy to disassemble and maintain. Background Technology

[0002] A gate valve is an opening and closing element consisting of a gate. The direction of the gate's movement is perpendicular to the direction of fluid flow. Gate valves can only be fully open or fully closed, and the angle varies depending on the valve parameters, typically 5°, or 2°52' when the medium temperature is not high. To improve its manufacturability and compensate for deviations in the sealing surface angle during processing, this type of gate is called a resilient gate.

[0003] For example, Chinese patent CN214888977U proposes a gate valve that is easy to maintain and repair. This patent allows for easy removal from the pipeline through a connection and installation structure, facilitating maintenance and replacement. The disassembly and assembly are simple, convenient, efficient, and fast. However, in this solution, the gate valve is disassembled by separating the rectangular sleeve and the rectangular connecting pipe, which are interlocked. When both ends of the gate valve are fixed to the pipeline, the gate valve is confined between the two pipelines. Consequently, without disassembling the gate valve from the pipeline, the rectangular sleeve and the rectangular connecting pipe have limited space to move, making it difficult to separate them. This can lead to poor maintenance of the gate valve.

[0004] To address the aforementioned problems, this application provides a gate valve that is easy to disassemble and maintain. Utility Model Content

[0005] The gate valve provided in this application, which is easy to disassemble and maintain, adopts the following technical solution:

[0006] A gate valve designed for easy disassembly and maintenance includes a gate valve body. An upper valve cover is bolted to the top of the gate valve body, and a large handwheel, fixedly connected to a valve stem, is located on the top of the upper valve cover. An inlet is located at the left end of the gate valve body, and an outlet is located at the right end. Both the inlet and outlet ends consist of a connecting portion and an installation portion. An anti-detachment ring is integrally cast on the end face of the connecting portion, and a quick-release cover is installed on the surface of the connecting portion corresponding to the anti-detachment ring. A shut-off valve is located between the connecting portion and the installation portion. A threaded ring is welded to the side of the shut-off valve facing the connecting portion. One end of the quick-release cover is integrally cast with a threaded shell, which is threadedly connected to the threaded ring of the shut-off valve. A first sealing ring is embedded between the threaded shell and the threaded ring, and a second sealing ring is embedded between the quick-release cover and the anti-detachment ring.

[0007] Furthermore, the valve head is provided at the top of the shut-off valve, and a small handwheel is fixedly installed on the top of the valve head, and a sealing valve disc is installed at the bottom of the valve head.

[0008] Furthermore, a flange is provided at the end of the mounting part away from the connecting part, and the surface of the flange is provided with several mounting holes.

[0009] Furthermore, the outer diameter of the threaded ring is larger than the outer diameter of the shut-off valve, the inner diameter of the threaded shell matches the outer diameter of the threaded ring, the inner side of the threaded shell is provided with internal threads, and the outer ring of the threaded ring is provided with external threads.

[0010] Furthermore, a round hole is provided at the tail end of the quick-release cover corresponding to the connecting portion, and a handle is welded to the outer surface of the quick-release cover.

[0011] Furthermore, the outer diameter of the anti-detachment ring is larger than the inner diameter of the round hole at the tail of the quick-release cover, and the size of the anti-detachment ring is adapted to the size of the inner space of the quick-release cover.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] A set of shut-off valves, quick-release covers, and anti-detachment rings are respectively installed on the inlet and outlet surfaces of the gate valve body. Since both the inlet and outlet ends consist of a connecting part and an installation part, and the shut-off valves, quick-release covers, and anti-detachment rings are located between the connecting part and the installation part, as the shut-off valves close the inlet and outlet ends, the quick-release cover is rotated by a lever, causing the threaded shell of the quick-release cover to disengage from the threaded ring of the shut-off valve. At this time, the first sealing ring between the threaded shell and the threaded ring is released, and the second sealing ring between the quick-release cover and the anti-detachment ring is released. The gate valve can be disassembled without completely disassembling the inlet and outlet ends, achieving the effect of convenient gate valve disassembly and maintenance, and minimizing fluid leakage caused by gate valve disassembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a cross-sectional view of the water inlet end of this application;

[0016] Figure 3 This is a schematic diagram of the quick-release cover structure of this application;

[0017] Figure 4 This is a schematic diagram of the shut-off valve structure of this application.

[0018] Explanation of the labels in the diagram:

[0019] 1. Gate valve body; 2. Upper valve cover; 3. Large handwheel; 4. Inlet end; 5. Outlet end; 6. Connecting part; 7. Mounting part; 8. Shut-off valve; 9. Quick-release cover; 10. Anti-detachment ring; 11. Threaded ring; 12. Threaded shell; 13. First sealing ring; 14. Second sealing ring; 15. Hand lever; 16. Small handwheel; 17. Sealing valve disc. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0023] This application discloses a gate valve that is easy to disassemble and maintain. Please refer to [link / reference]. Figure 1-4The valve includes a gate valve body 1. An upper valve cover 2 is bolted to the top of the gate valve body 1, and a large handwheel 3, fixedly connected to the valve stem, is located on the top of the upper valve cover 2. An inlet end 4 is located at the left end of the gate valve body 1, and an outlet end 5 is located at the right end. Both the inlet end 4 and the outlet end 5 are composed of a connecting part 6 and an installation part 7. An anti-detachment ring 10 is integrally cast on the end face of the connecting part 6, and a quick-release cover 9 is installed on the surface of the connecting part 6 corresponding to the anti-detachment ring 10. A shut-off valve 8 is located between the connecting part 6 and the installation part 7. A threaded ring 11 is welded to the side of the shut-off valve 8 facing the connecting part 6. One end of the cover 9 is integrally cast with a threaded shell 12, which is threadedly connected to the threaded ring 11 of the shut-off valve 8. A first sealing ring 13 is embedded between the threaded shell 12 and the threaded ring 11. A second sealing ring 14 is embedded between the quick-release cover 9 and the anti-detachment ring 10. In order to increase the reliability of the connection between the connecting part 6 and the mounting part 7, an annular rubber sleeve is also bonded to the end face of the anti-detachment ring 10, and the annular rubber sleeve abuts against the threaded ring 11. The internal components and principles of the gate valve described in this application are existing known technologies and there are mature products. Therefore, no further explanation is given regarding its internal components and principles.

[0024] Please see Figure 1 , Figure 2 and Figure 4 The top of the shut-off valve 8 is provided with a valve head, and a small handwheel 16 is fixedly installed on the top of the valve head. A sealing valve disc 17 is installed at the bottom of the valve head. This structure makes it easy to shut off the fluid in the pipeline and facilitates the disassembly of the gate valve body 1.

[0025] Please see Figure 2 The end of the installation part 7 away from the connecting part 6 is provided with a flange, and the surface of the flange is provided with several mounting holes. This structure makes it easy to connect the installation part 7 to the fluid pipeline.

[0026] Please see Figure 2 and Figure 3 The outer diameter of the threaded ring 11 is larger than the outer diameter of the shut-off valve 8. The inner diameter of the threaded shell 12 matches the outer diameter of the threaded ring 11. The inner side of the threaded shell 12 is provided with internal threads, and the outer ring of the threaded ring 11 is provided with external threads. This structure facilitates the threaded connection between the threaded shell 12 and the threaded ring 11.

[0027] Please see Figure 2 and Figure 3 The quick-release cover 9 has a round hole at the tail corresponding to the connecting part 6, and a handle 15 is welded to the outer surface of the quick-release cover 9. This structure makes it easy to connect the quick-release cover 9 to the anti-detachment ring 10 and facilitates the loading and unloading of the quick-release cover 9.

[0028] Please see Figure 2The outer diameter of the anti-detachment ring 10 is larger than the inner diameter of the round hole at the tail of the quick-release cover 9, and the size of the anti-detachment ring 10 is adapted to the size of the inner space of the quick-release cover 9. With this structure, it is easy to connect the anti-detachment ring 10 to the quick-release cover 9, so that the anti-detachment ring 10 can be used as part of the connecting part 6 and can move on the surface of the connecting part 6.

[0029] The implementation principle of this embodiment is as follows: In use, firstly, rotate the small handwheel 16 of the shut-off valve 8 to close the inlet end 4 and outlet end 5 through the sealing valve disc 17 of the shut-off valve 8, so that the fluid in the pipeline is blocked in the installation part 7 of the inlet end 4 and outlet end 5. Then, rotate the quick-release cover 9 through the lever 15 to cause the threaded shell 12 of the quick-release cover 9 to be disconnected from the threaded ring 11 of the shut-off valve 8. At this time, the first sealing ring 13 between the threaded shell 12 and the threaded ring 11 is released from the sealing state, and the second sealing ring 14 between the quick-release cover 9 and the anti-detachment ring 10 is released from the sealing state. The gate valve is disassembled without completely disassembling the inlet end 4 and outlet end 5, which facilitates the disassembly and maintenance of the gate valve body 1. When the maintenance of the gate valve body 1 is completed, the inlet end 4 and outlet end 5 of the gate valve body 1 are sealed and connected to the corresponding installation part 7 by the above steps, and then the shut-off valve 8 of the inlet end 4 and outlet end 5 can be opened.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gate valve that is easy to disassemble and maintain, comprising a gate valve body (1), characterized in that: The top of the gate valve body (1) is fixed with an upper valve cover (2) by bolts, and the top of the upper valve cover (2) is provided with a large handwheel (3) fixedly connected to the valve stem. The left end of the gate valve body (1) is provided with a water inlet (4), and the right end of the gate valve body (1) is provided with a water outlet (5). The water inlet (4) and the water outlet (5) are both composed of a connecting part (6) and an installation part (7). The end face of the connecting part (6) is integrally cast with an anti-detachment ring (10), and the surface of the connecting part (6) is covered with a quick-release cover (9) corresponding to the anti-detachment ring (10). A shut-off valve (8) is provided between the connecting part (6) and the installation part (7). A threaded ring (11) is welded to the side of the shut-off valve (8) facing the connecting part (6). A threaded shell (12) is integrally cast at one end of the quick-release cover (9), and the threaded shell (12) is threadedly connected to the threaded ring (11) of the shut-off valve (8). A first sealing ring (13) is embedded between the threaded shell (12) and the threaded ring (11). A second sealing ring (14) is embedded between the quick-release cover (9) and the anti-detachment ring (10).

2. The gate valve for easy disassembly and maintenance according to claim 1, characterized in that: The top of the shut-off valve (8) is provided with a valve head, and a small handwheel (16) is fixedly installed on the top of the valve head, and a sealing valve disc (17) is installed at the bottom of the valve head.

3. The gate valve for easy disassembly and maintenance according to claim 1, characterized in that: The mounting part (7) is provided with a flange at the end away from the connecting part (6), and the surface of the flange is provided with several mounting holes.

4. A gate valve that is easy to disassemble and maintain according to claim 1, characterized in that: The outer diameter of the threaded ring (11) is larger than the outer diameter of the shut-off valve (8), the inner diameter of the threaded shell (12) matches the outer diameter of the threaded ring (11), the inner side of the threaded shell (12) is provided with an internal thread, and the outer ring of the threaded ring (11) is provided with an external thread.

5. A gate valve that is easy to disassemble and maintain according to claim 1, characterized in that: The quick-release cover (9) has a round hole at the tail corresponding to the connecting part (6), and a handle (15) is welded to the outer surface of the quick-release cover (9).

6. A gate valve that is easy to disassemble and maintain according to claim 5, characterized in that: The outer diameter of the anti-detachment ring (10) is larger than the inner diameter of the round hole at the tail of the quick-release cover (9), and the size of the anti-detachment ring (10) is adapted to the size of the inner space of the quick-release cover (9).

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