A double-seal face gate valve

Abstract

The utility model discloses a double sealing surface gate valve relates to valve body technical field, the utility model discloses a pipe body and front mounting panel, one end of pipe body is with the lateral surface fixed connection of front mounting panel, the one end fixed connection of pipe body is away from the rear mounting panel of front mounting panel, and the circumference of pipe body is provided with adjusting device. The utility model discloses the mutual cooperation between the cylinder, cylinder cover and connecting column etc. components in adjusting device, has realized the flexible opening and closing of gate valve, and through the setting of buffer spring and buffer pad, effectively reduced the impact intensity of sealing gate in the opening and closing process, prolonged the service life of gate valve. In addition, the side section of sealing gate is set to semicircle, not only improves the sealing performance of gate valve, but also ensures that the fluid does not leak when the gate valve is closed, further enhances the applicability of the gate valve. Solve the problem of high -efficient sealing and buffer protection of double sealing surface gate valve in the related art.

Description

Technical Field

[0001] This utility model belongs to the field of valve body technology, and in particular relates to a gate valve with double sealing surfaces. Background Technology

[0002] Traditional gate valves often suffer from poor sealing and insufficient buffer protection, which makes fluid leakage easy when the gate valve is closed, and the service life of the gate valve is relatively short.

[0003] According to the public announcement of the high-strength gate valve (publication number: CN206145164U), it includes: a gate valve body, a gate valve handwheel, a gate valve lifting shaft, a gate valve hydraulic lifting device, a gate valve cap, a gate valve mounting hole, a gate valve plate, and a gate valve connecting rod. The gate valve handwheel, the gate valve lifting shaft, the gate valve plate, and the gate valve connecting rod are welded together. The gate valve body is provided with multiple gate valve mounting holes. The gate valve cap is located on the upper part of the gate valve body. The gate valve lifting shaft and the gate valve connecting rod are located inside the gate valve cap. The gate valve lifting shaft is located inside the gate valve hydraulic lifting device. The gate valve plate is located inside the gate valve body. The gate valve plate is also provided with a sealing layer, and an anti-corrosion layer is provided on the outside of the sealing layer.

[0004] In the aforementioned application, the gate valve's lifting shaft and connecting rod are driven by a hydraulic lifting device to move the gate valve plate up and down, thereby achieving fluid control. However, in high-pressure fluid environments, the sealing performance of the gate valve plate and its operation during opening and closing are easily affected, leading to fluid leakage and shortened service life. Therefore, we propose a gate valve with dual sealing surfaces. Utility Model Content

[0005] The purpose of this invention is to provide a gate valve with double sealing surfaces. Through the cooperation of components such as the cylinder body, cylinder head, and connecting column in the adjusting device, the gate valve can be flexibly opened and closed. Simultaneously, the inclusion of a buffer spring and buffer pad effectively reduces the impact force on the sealing gate during opening and closing, extending the service life of the gate valve. Furthermore, the semi-circular side cross-section of the sealing gate not only improves the sealing performance of the gate valve but also ensures that fluid does not leak when the gate valve is closed, further enhancing the practicality of the gate valve and solving existing problems.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a gate valve with double sealing surfaces, including a pipe body and a front mounting plate. One end of the pipe body is fixedly connected to the side of the front mounting plate, and a rear mounting plate is fixedly connected to the end of the pipe body away from the front mounting plate. An adjustment device is provided on the circumferential surface of the pipe body.

[0008] The adjusting device includes a cylinder body, which is connected through and fixedly connected to the circumferential surface of the tube body. A cylinder cover is fixedly connected to the top of the cylinder body, and a connecting column is fixedly connected to the top of the cylinder cover. A locking lug is fixedly connected to the end of the connecting column away from the cylinder cover. A threaded sleeve is connected through and fixedly connected to the top of the locking lug. A threaded rod is threadedly connected to the inner circumferential surface of the threaded sleeve. A handwheel is fixedly connected to one end of the threaded rod. A sliding groove is provided on the inner wall of the cylinder body. A sealing gate is slidably connected to the inner side of the sliding groove. A connecting block is fixedly connected to the bottom of the sealing gate.

[0009] Furthermore, a buffer spring is fixedly connected to the bottom of the cylinder head, and a buffer pad is fixedly connected to the end of the buffer spring away from the cylinder head. There are two sealing gates, which serve to buffer the overall structure, reduce the collision force between the sealing gate and the inner wall of the cylinder when the sealing gate is opened, thereby improving the service life of the gate valve.

[0010] Furthermore, the number of buffer springs and buffer pads is set to two, and they are symmetrically distributed along the vertical central axis of the pipe. The side cross-section of the sealing gate is set to a semi-circle, which is to improve the sealing performance of the gate valve, ensure that the fluid does not leak when the gate valve is closed, and facilitate the smooth sliding of the sealing gate in the cylinder.

[0011] Furthermore, there are two connecting columns, which are symmetrically distributed along the vertical central axis of the pipe. The top of the connecting block is fixedly connected to the end of the threaded rod away from the handwheel. Its function is to facilitate the rotation of the threaded rod within the threaded sleeve by rotating the handwheel, thereby pushing the connecting block to drive the sealing gate to slide within the groove, thus realizing the opening of the gate valve.

[0012] Furthermore, two buffer springs and buffer pads are provided, and they are symmetrically distributed along the vertical central axis of the pipe. The bottom of the buffer pad is located on the displacement trajectory of the top of the sealing gate. Its function is to further buffer and protect the sealing gate, so as to avoid the sealing gate from directly contacting the inner wall of the cylinder when it is closed, causing damage, and at the same time improve the closing stability and sealing performance of the gate valve.

[0013] Furthermore, a pressure relief protection device is provided on the side of the pipe body. The pressure relief protection device includes a connecting pipe, which is fixedly and penetrates the circumferential surface of the pipe body. An adjusting chamber is fixedly connected through the circumferential surface of the connecting pipe. A rotating shaft is fixedly connected to the inner wall of the adjusting chamber. A pressure plate is fixedly connected to the circumferential surface of the rotating shaft. A pressure spring is fixedly connected to the side of the pressure plate. The end of the pressure spring away from the pressure plate is fixedly connected to the inner wall of the adjusting chamber. Its function is to provide pressure relief protection for the fluid when the fluid pressure is too high through the cooperation of the pressure plate and the pressure spring.

[0014] Furthermore, the side of the pressure plate is fixedly connected to the inner wall of the regulating chamber. There are two pressure plates and pressure springs, which are symmetrically distributed along the vertical central axis of the regulating chamber. Their function is to ensure that the pressure relief protection device can be evenly stressed when the fluid pressure is too high, thereby improving the pressure relief effect and the safety of the gate valve.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model achieves flexible opening and closing of the gate valve through the cooperation between components such as the cylinder body, cylinder head, and connecting column in the adjusting device. Simultaneously, the inclusion of buffer springs and buffer pads effectively reduces the impact force on the sealing gate during opening and closing, extending the service life of the gate valve. Furthermore, the semi-circular side cross-section of the sealing gate not only improves the sealing performance of the gate valve but also ensures that fluid does not leak when the gate valve is closed, further enhancing the practicality of the gate valve, improving its safety performance, and providing ease of operation and a long service life.

[0017] 2. This utility model achieves automatic pressure relief protection when the fluid pressure is too high through the cooperation of components such as the connecting pipe, regulating chamber, and rotating shaft in the pressure relief protection device. This effectively avoids gate valve damage or leakage caused by excessive fluid pressure, further improving the safety and stability of the gate valve. At the same time, the pressure relief protection device is simple and practical in design, easy to install and maintain, reducing user costs. Its high safety and other advantages make it suitable for controlling various fluid pipelines and have broad market application prospects.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional side view structural schematic diagram of the present invention;

[0022] Figure 3 This is a three-dimensional cross-sectional structural schematic diagram of the adjustment device of this utility model;

[0023] Figure 4This is a three-dimensional cross-sectional structural schematic diagram of the pressure relief protection device of this utility model;

[0024] Figure 5 This is a three-dimensional cross-sectional structural diagram of the present invention.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Pipe body; 2. Front mounting plate; 3. Rear mounting plate; 4. Adjustment device; 401. Cylinder body; 402. Cylinder head; 403. Connecting column; 404. Locking lug; 405. Threaded sleeve; 406. Threaded rod; 407. Handwheel; 408. Slide groove; 409. Sealing gate; 410. Connecting block; 5. Buffer spring; 6. Buffer pad; 7. Pressure relief protection device; 701. Connecting pipe; 702. Adjustment chamber; 703. Rotating shaft; 704. Pressure plate; 705. Pressure spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 This utility model is a gate valve with double sealing surfaces, including a pipe body 1 and a front mounting plate 2. One end of the pipe body 1 is fixedly connected to the side of the front mounting plate 2, and the end of the pipe body 1 away from the front mounting plate 2 is fixedly connected to a rear mounting plate 3. An adjustment device 4 is provided on the circumferential surface of the pipe body 1.

[0029] The adjusting device 4 includes a cylinder body 401, which is connected to the circumference of the tube body 1. A cylinder cover 402 is fixedly connected to the top of the cylinder body 401. A connecting post 403 is fixedly connected to the top of the cylinder cover 402. A locking lug 404 is fixedly connected to the end of the connecting post 403 away from the cylinder cover 402. A threaded sleeve 405 is fixedly connected to the top of the locking lug 404. A threaded rod 406 is threadedly connected to the inner circumference of the threaded sleeve 405. A handwheel 407 is fixedly connected to one end of the threaded rod 406. A sliding groove 408 is provided on the inner wall of the cylinder body 401. A sealing gate 409 is slidably connected to the inner side of the sliding groove 408. A connecting block 410 is fixedly connected to the bottom of the sealing gate 409.

[0030] As shown in the figure, a buffer spring 5 is fixedly connected to the bottom of the cylinder head 402, and a buffer pad 6 is fixedly connected to the end of the buffer spring 5 away from the cylinder head 402. There are two sealing gates 409, which are used to buffer the overall structure and reduce the collision force between the sealing gate 409 and the inner wall of the cylinder body 401 when the sealing gate 409 is opened, thereby improving the service life of the gate valve.

[0031] As shown in the figure, there are two buffer springs 5 ​​and buffer pads 6, which are symmetrically distributed along the vertical central axis of the pipe body 1. The side section of the sealing gate 409 is set as a semi-circle, which is used to improve the sealing performance of the gate valve, ensure that the fluid will not leak when the gate valve is closed, and facilitate the smooth sliding of the sealing gate 409 in the cylinder body 401.

[0032] As shown in the figure, there are two connecting columns 403, which are symmetrically distributed along the vertical central axis of the pipe body 1. The top of the connecting block 410 is fixedly connected to the end of the threaded rod 406 away from the handwheel 407. Its function is to facilitate the rotation of the threaded rod 406 in the threaded sleeve 405 by rotating the handwheel 407, thereby pushing the connecting block 410 to drive the sealing gate 409 to slide in the slide groove 408, so as to realize the opening of the gate valve.

[0033] As shown in the figure, there are two buffer springs 5 ​​and buffer pads 6, which are symmetrically distributed along the vertical central axis of the pipe body 1. The bottom of the buffer pad 6 is located on the displacement trajectory of the top of the sealing gate 409. Its function is to further buffer and protect the sealing gate 409, so as to avoid the sealing gate 409 from directly contacting the inner wall of the cylinder body 401 when it is closed, causing damage, and at the same time improving the closing stability and sealing performance of the gate valve.

[0034] As shown in the figure, a pressure relief protection device 7 is provided on the side of the pipe body 1. The pressure relief protection device 7 includes a connecting pipe 701, which is fixedly and penetrates the circumferential surface of the pipe body 1. An adjusting chamber 702 is fixedly connected to the circumferential surface of the connecting pipe 701. A rotating shaft 703 is fixedly connected to the inner wall of the adjusting chamber 702. A pressure plate 704 is fixedly connected to the circumferential surface of the rotating shaft 703. A pressure spring 705 is fixedly connected to the side of the pressure plate 704. The end of the pressure spring 705 away from the pressure plate 704 is fixedly connected to the inner wall of the adjusting chamber 702. Its function is to provide pressure relief protection for the fluid when the fluid pressure is too high through the cooperation of the pressure plate 704 and the pressure spring 705.

[0035] As shown in the figure, the side of the pressure plate 704 is fixedly connected to the inner wall of the regulating chamber 702. There are two pressure plates 704 and two pressure springs 705, which are symmetrically distributed along the vertical central axis of the regulating chamber 702. Their function is to ensure that the pressure relief protection device 7 can be evenly stressed when the fluid pressure is too high, thereby improving the pressure relief effect and the safety of the gate valve.

[0036] A specific application of this embodiment is as follows: When fluid passes through the double-sealing gate valve of this utility model, the fluid first enters the pipe body 1. When it is necessary to adjust the fluid flow rate or close the gate valve, the operator rotates the handwheel 407. The rotation of the handwheel 407 drives the threaded rod 406 to rotate within the threaded sleeve 405. Due to the interaction of the threads, the threaded rod 406 moves axially along the threaded sleeve 405. The movement of the threaded rod 406 pushes the sealing gate 409 to slide within the groove 408 on the inner wall of the cylinder body 401 via the connecting block 410. The sliding of the sealing gate 409 realizes the opening and closing functions of the gate valve. During the opening process of the sealing gate 409, the buffer spring 5 and the buffer pad 6 play a key buffering role. They reduce the collision force between the sealing gate 409 and the cylinder head 402, effectively protecting the internal structure of the gate valve and improving the service life of the gate valve. At the same time, the setting of the buffer spring 5 and the buffer pad 6 also ensures the stability and sealing performance of the gate valve when it is closed. Furthermore, when the fluid pressure is too high, the pressure relief device 7 activates. The fluid pressure pushes the pressure plate 704 to rotate around the shaft 703, thereby compressing the pressure spring 705. Through the cooperation of the pressure plate 704 and the pressure spring 705, the pressure relief device 7 can release some of the fluid pressure, protecting the gate valve and piping system from damage. This design improves the safety and reliability of the gate valve.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A gate valve with double sealing surfaces, comprising a pipe body (1) and a front mounting plate (2), characterized in that: One end of the tube (1) is fixedly connected to the side of the front mounting plate (2), and the end of the tube (1) away from the front mounting plate (2) is fixedly connected to the rear mounting plate (3). An adjustment device (4) is provided on the circumferential surface of the tube (1). The adjusting device (4) includes a cylinder (401), which is connected to the circumferential surface of the tube (1) through the cylinder (401). A cylinder cover (402) is fixedly connected to the top of the cylinder (401). A connecting column (403) is fixedly connected to the top of the cylinder cover (402). A locking lug (404) is fixedly connected to the end of the connecting column (403) away from the cylinder cover (402). A threaded sleeve (405) is connected to the top of the locking lug (404). A threaded rod (406) is threadedly connected to the inner circumferential surface of the threaded sleeve (405). A handwheel (407) is fixedly connected to one end of the threaded rod (406). A sliding groove (408) is provided on the inner wall of the cylinder (401). A sealing gate (409) is slidably connected to the inner side of the sliding groove (408). A connecting block (410) is fixedly connected to the bottom of the sealing gate (409).

2. The gate valve with double sealing surfaces according to claim 1, characterized in that, A buffer spring (5) is fixedly connected to the bottom of the cylinder head (402), and a buffer pad (6) is fixedly connected to the end of the buffer spring (5) away from the cylinder head (402). There are two sealing gates (409).

3. A gate valve with double sealing surfaces according to claim 2, characterized in that, The number of buffer springs (5) and buffer pads (6) is set to two, and they are symmetrically distributed along the vertical central axis of the tube body (1). The side section of the sealing gate (409) is set to a semi-circle.

4. A gate valve with double sealing surfaces according to claim 3, characterized in that, Two connecting columns (403) are provided and are symmetrically distributed along the vertical central axis of the tube body (1). The top of the connecting block (410) is fixedly connected to the end of the threaded rod (406) away from the handwheel (407).

5. A gate valve with double sealing surfaces according to claim 4, characterized in that, The number of buffer springs (5) and buffer pads (6) is two, and they are symmetrically distributed along the vertical central axis of the tube (1). The bottom of the buffer pads (6) is located on the displacement trajectory of the top of the sealing gate (409).

6. A gate valve with double sealing surfaces according to claim 5, characterized in that, The side of the pipe body (1) is provided with a pressure relief protection device (7). The pressure relief protection device (7) includes a connecting pipe (701). The connecting pipe (701) is fixedly and penetrates the circumferential surface of the pipe body (1). The circumferential surface of the connecting pipe (701) is penetrated and fixedly connected to an adjustment chamber (702). The inner wall of the adjustment chamber (702) is fixedly connected to a rotating shaft (703). The circumferential surface of the rotating shaft (703) is fixedly connected to a pressure plate (704). The side of the pressure plate (704) is fixedly connected to a pressure spring (705). The end of the pressure spring (705) away from the pressure plate (704) is fixedly connected to the inner wall of the adjustment chamber (702).

7. A gate valve with double sealing surfaces according to claim 6, characterized in that, The side of the pressure plate (704) is fixedly connected to the inner wall of the regulating chamber (702). There are two pressure plates (704) and pressure springs (705), which are symmetrically distributed along the vertical central axis of the regulating chamber (702).

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