Anti-jamming low-torque pilot shut-off valve

Abstract

The utility model discloses a low twist guide stop valve of preventing jam, including the valve body, the upper end of valve body is installed with the protection box, the top one side slidingly connected with the rack in the protection box, one side mounting of protection box has the stud, the lower extreme of stud penetrates protection box and extends to the valve body, be equipped with the closed mouth in the valve body, the corresponding valve plate is equipped with in the closed mouth, the lower extreme screwing of stud is in the upper end of valve plate, the upper end fixed of rack has the L type connecting plate, one side of L type connecting plate is connected with two hydraulic telescopic mechanisms, the upper end fixed sleeve of stud has the gear, the utility model discloses can ensure that the valve plate can open and close smoothly under complex working condition, has promoted the torque, has guaranteed the normal operation of pipeline system, has reduced the risk of jam further, has prolonged the service life of equipment, has guaranteed the consistency and reliability of valve plate opening and closing process simultaneously, has strengthened the stability and firmness of operation.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to an anti-jamming, low-torque guided gate valve. Background Technology

[0002] In the field of industrial fluid control, electrically operated gate valves are a common and important type of equipment, primarily used to cut off or connect the medium in pipelines. Traditional electrically operated gate valves typically rely on a motor to drive a stud to rotate, thereby raising or lowering the valve plate to complete the closing and opening operations of the pipeline medium. However, this traditional driving method has some significant drawbacks.

[0003] On the one hand, the torque generated when the motor drives the stud to rotate is relatively low. In some operating conditions that require greater driving force to open or close valves, low torque may cause the valve to fail to open or close completely, affecting the normal operation of the pipeline system. For example, in pipelines carrying high-pressure, high-viscosity media, a low-torque electric shut-off valve may not be able to provide sufficient force to overcome the resistance of the media, resulting in incomplete valve opening, unstable flow, and even affecting the efficiency and quality of the entire process.

[0004] On the other hand, jamming is also a major problem faced by traditional electric gate valves. Due to long-term use, accumulation of impurities in the medium, or wear of mechanical parts, the stud may jam during rotation. Once jamming occurs, it will not only affect the normal operation of the valve, but may also cause motor overload, shorten the service life of the motor and valve, and increase equipment maintenance costs and downtime. To address these issues, we have proposed an anti-jamming low-torque guided gate valve. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an anti-jamming, low-torque guided shut-off valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An anti-jamming, low-torque guided shut-off valve includes a valve body. A protective box is installed on the upper end of the valve body. A rack is slidably connected to the top side of the protective box. A stud is installed on one side of the protective box. The lower end of the stud passes through the protective box and extends into the valve body. The valve body has a closed opening. A corresponding valve plate passes through the closed opening. The lower end of the stud is threaded to the upper end of the valve plate. An L-shaped connecting plate is fixed to the upper end of the rack. Two hydraulic telescopic mechanisms are connected to one side of the L-shaped connecting plate. A gear is fixedly fitted to the upper end of the stud, and the gear meshes with the rack.

[0008] Preferably, a guide rail is installed on one side of the protective box, a slider is installed on the guide rail, one side of the rack is fixed to one end of the slider, and the lower end of the L-shaped connecting plate is fixed to the upper end of the slider.

[0009] Preferably, a mounting base is installed on one side of the protective box, and the stud is rotatably sleeved on the mounting base.

[0010] Preferably, the hydraulic telescopic mechanism includes two hydraulic cylinders fixed to one side of the protective box by fasteners, the piston rod ends of the two hydraulic cylinders are jointly fixed to one side of the L-shaped connecting plate, and the two hydraulic cylinders are connected by a synchronous control system.

[0011] Preferably, the upper center of the valve plate is provided with a threaded blind hole, and the stud passes through the threaded blind hole.

[0012] Preferably, a support platform is installed at the lower end of the valve body.

[0013] In this utility model, during operation:

[0014] 1. Valve plate opening process

[0015] Hydraulic telescopic mechanism start-up: When it is necessary to open the valve plate, the control system issues a command to start the hydraulic telescopic mechanism. The hydraulic telescopic mechanism consists of two hydraulic cylinders fixed to one side of the protective box by fasteners, and the two hydraulic cylinders are connected by a synchronous control system to ensure that they can act simultaneously and synchronously.

[0016] L-shaped connecting plate movement: The piston rods of the two hydraulic cylinders extend, and their ends together push the L-shaped connecting plate to move in a specific direction. Since one side of the L-shaped connecting plate is fixedly connected to the rack, the movement of the L-shaped connecting plate will drive the rack to move together.

[0017] Gear rotation: As the rack moves, the gear meshing with the rack begins to rotate. The gear is fixedly mounted on the upper end of the stud, so the rotation of the gear will directly drive the stud to rotate.

[0018] Valve plate rises: The lower end of the stud is threaded onto the upper end of the valve plate. When the stud rotates, the valve plate moves upward along the axis of the stud through the principle of thread transmission, thereby raising the valve plate and opening the valve so that the medium in the pipeline can flow normally.

[0019] 2. Valve plate closing process

[0020] The valve plate closing process is the reverse of the opening process. When it is necessary to close the valve, the control system issues a command to retract the piston rods of the two hydraulic cylinders, which drives the L-shaped connecting plate to move in the opposite direction, thereby causing the rack to move in the opposite direction. The gear and stud also rotate in the opposite direction. Finally, the valve plate moves downward along the stud until it closes the sealing port and cuts off the flow of the medium in the pipeline.

[0021] In addition, the guide rail and slider play a guiding and stabilizing role throughout the operation. The slider is mounted on the guide rail, one side of the rack is fixed to one end of the slider, and the lower side of the L-shaped connecting plate is also fixed to the upper end of the slider. When the rack moves, the slider slides along the guide rail, ensuring the smoothness and accuracy of the rack's movement and reducing the possibility of jamming. At the same time, the mounting base provides stable support for the stud, allowing the stud to rotate smoothly.

[0022] This utility model has the following advantages:

[0023] 1. The hydraulic telescopic mechanism is adopted. The hydraulic cylinder can generate a large thrust. Through the transmission of L-shaped connecting plate, rack and pinion, and gear, the stud can obtain a larger torque, ensuring that the valve plate can open and close smoothly under complex working conditions, ensuring the normal operation of the pipeline system, and improving the efficiency and quality of the process.

[0024] 2. The design of the guide rail and slider ensures the smoothness and accuracy of the rack movement by sliding along the guide rail when the rack moves, reducing the possibility of jamming. At the same time, the mounting base provides stable support for the stud, allowing the stud to rotate smoothly, further reducing the risk of jamming and extending the service life of the equipment.

[0025] 3. Two hydraulic cylinders are used and connected by a synchronous control system to ensure that the two hydraulic cylinders can act simultaneously and synchronously, thus ensuring the consistency and reliability of the valve plate opening and closing process and avoiding malfunctions that may be caused by asynchronous actions.

[0026] In summary, this invention ensures that the valve plate can open and close smoothly under complex working conditions, increases torque, guarantees the normal operation of the pipeline system, further reduces the risk of jamming, extends the service life of the equipment, and at the same time ensures the consistency and reliability of the valve plate opening and closing process, enhancing the stability and robustness of operation. Attached Figure Description

[0027] Figure 1 A structural diagram showing the closure of this utility model;

[0028] Figure 2 This is a structural diagram of the present invention;

[0029] Figure 3 A structural diagram showing the hydraulic telescopic mechanism of this utility model;

[0030] Figure 4 This is a diagram of the stud mounting structure of this utility model;

[0031] Figure 5 This is a structural diagram showing the connection between the hydraulic cylinder and the L-shaped connecting plate of this utility model;

[0032] Figure 6 This is a structural diagram of the valve plate and stud connection of this utility model.

[0033] In the diagram: 1. Protective box, 2. Guide rail, 3. L-shaped connecting plate, 4. Hydraulic cylinder, 5. Gear, 6. Rack, 7. Mounting base, 8. Stud, 9. Slider, 10. Valve plate, 11. Valve body, 12. Support platform, 13. Sealing port, 14. Fixture. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] Reference Figure 1-6 The anti-jamming low-torque guided shut-off valve includes a valve body 11. A protective box 1 is installed on the upper end of the valve body 11. A rack 6 is slidably connected to the top side of the protective box 1. A stud 8 is installed on one side of the protective box 1. The lower end of the stud 8 passes through the protective box 1 and extends into the valve body 11. A sealing port 13 is provided in the valve body 11. A corresponding valve plate 10 passes through the sealing port 13. The lower end of the stud 8 is threaded to the upper end of the valve plate 10. An L-shaped connecting plate 3 is fixed to the upper end of the rack 6. The L-shaped connecting plate 3 plays a key role in connecting the hydraulic telescopic mechanism and the rack 6, so that the action of the hydraulic telescopic mechanism can be transmitted to the rack 6.

[0036] Two hydraulic telescopic mechanisms are connected to one side of the L-shaped connecting plate 3. A gear 5 is fixedly mounted on the upper end of the stud 8, and the gear 5 meshes with the rack 6. The meshing relationship between the gear 5 and the rack 6 converts the linear motion of the rack 6 into the rotational motion of the stud 8. When the rack 6 moves, it drives the gear 5 that meshes with it to rotate, thereby causing the stud 8 to rotate. The transmission method has the advantages of high transmission efficiency and good stability, and can accurately transmit the power of the hydraulic telescopic mechanism to the valve plate 10 to realize the opening and closing of the valve.

[0037] A guide rail 2 is installed on one side inside the protective box 1, and a slider 9 is installed on the guide rail 2. One side of the rack 6 is fixed to one end of the slider 9, and the lower end of the L-shaped connecting plate 3 is fixed to the upper end of the slider 9. When the rack 6 moves, the slider 9 will slide along the guide rail 2. This not only ensures the smoothness of the rack 6's movement, enabling it to move along the predetermined trajectory, but also improves the accuracy of the movement and reduces the possibility of jamming due to deviation.

[0038] A mounting base 7 is installed on one side inside the protective box 1. The stud 8 is rotatably sleeved on the mounting base 7. The mounting base 7 ensures the stability of the stud 8 during rotation and avoids affecting the normal lifting and lowering of the valve plate 10 due to the shaking of the stud 8.

[0039] The hydraulic telescopic mechanism includes two hydraulic cylinders 4 fixed to one side of the protective box 1 by a fixing member 14. The piston rod ends of the two hydraulic cylinders 4 are fixed to one side of the L-shaped connecting plate 3. The two hydraulic cylinders 4 are connected by a synchronous control system to ensure that the two hydraulic cylinders 4 can move simultaneously and synchronously.

[0040] The upper center of the valve plate 10 is provided with a threaded blind hole, through which the stud 8 passes. The lower end of the valve body 11 is equipped with a support platform 12. The valve plate 10 is connected to the stud 8 by threads, which realizes the lifting and lowering movement when the stud 8 rotates, thereby controlling the opening and closing of the valve. When the valve plate 10 is raised, the valve is opened, and the medium in the pipeline can flow normally; when the valve plate 10 is lowered, the valve is closed, cutting off the flow of the medium in the pipeline.

[0041] In this utility model, during operation:

[0042] 1. Valve plate opening process

[0043] Hydraulic telescopic mechanism start-up: When it is necessary to open the valve plate 10, the control system issues a command to start the hydraulic telescopic mechanism. The hydraulic telescopic mechanism consists of two hydraulic cylinders 4 fixed to one side of the protective box 1 by the fixing member 14. The two hydraulic cylinders 4 are connected by a synchronous control system to ensure that they can act simultaneously and synchronously. The control system can accurately control the start and stop of the hydraulic telescopic mechanism according to the preset program or the operator's instructions.

[0044] L-shaped connecting plate movement: The piston rods of the two hydraulic cylinders 4 extend, and their ends push the L-shaped connecting plate 3 to move in a specific direction. Since one side of the L-shaped connecting plate 3 is fixedly connected to the rack 6, the movement of the L-shaped connecting plate 3 will drive the rack 6 to move together.

[0045] Gear rotation: As rack 6 moves, gear 5 meshing with rack 6 begins to rotate. Gear 5 is fixedly mounted on the upper end of stud 8, so the rotation of gear 5 will directly drive stud 8 to rotate.

[0046] Valve plate rises: The lower end of the stud 8 is threaded onto the upper end of the valve plate 10. When the stud 8 rotates, the valve plate 10 will move upward along the axial direction of the stud 8 through the principle of thread transmission, thereby raising the valve plate 10, opening the valve, and allowing the medium in the pipeline to flow normally.

[0047] 2. Valve plate closing process

[0048] The valve plate closing process is the reverse of the opening process. When it is necessary to close the valve, the control system issues a command to retract the piston rods of the two hydraulic cylinders 4, which drives the L-shaped connecting plate 3 to move in the opposite direction, thereby causing the rack 6 to move in the opposite direction. The gear 5 and the stud 8 also rotate in the opposite direction. Finally, the valve plate 10 moves downward along the stud 8 until the sealing port 13 is closed, cutting off the flow of medium in the pipeline.

[0049] In addition, during the entire operation, the guide rail 2 and the slider 9 play a guiding and stabilizing role. The slider 9 is mounted on the guide rail 2, one side of the rack 6 is fixed to one end of the slider 9, and the lower side of the L-shaped connecting plate 3 is also fixed to the upper end of the slider 9. When the rack 6 moves, the slider 9 will slide along the guide rail 2, ensuring the smoothness and accuracy of the rack 6's movement and reducing the possibility of jamming. At the same time, the mounting base 7 provides stable support for the stud 8, enabling the stud 8 to rotate smoothly.

[0050] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A low-torque guided shut-off valve with anti-jamming properties, comprising a valve body (11), characterized in that, The upper end of the valve body (11) is equipped with a protective box (1). A rack (6) is slidably connected to the top side of the protective box (1). A stud (8) is installed on one side of the protective box (1). The lower end of the stud (8) passes through the protective box (1) and extends into the valve body (11). The valve body (11) is provided with a closed opening (13). A corresponding valve plate (10) passes through the closed opening (13). The lower end of the stud (8) is threaded onto the upper end of the valve plate (10). An L-shaped connecting plate (3) is fixed to the upper end of the rack (6). Two hydraulic telescopic mechanisms are connected to one side of the L-shaped connecting plate (3). A gear (5) is fixedly fitted to the upper end of the stud (8), and the gear (5) and the rack (6) mesh.

2. The anti-jamming low-torque guide shut-off valve according to claim 1, characterized in that: A guide rail (2) is installed on one side of the protective box (1), and a slider (9) is installed on the guide rail (2). One side of the rack (6) is fixed to one end of the slider (9), and the lower end of the L-shaped connecting plate (3) is fixed to the upper end of the slider (9).

3. The anti-jamming low-torque guide shut-off valve according to claim 1, characterized in that: A mounting base (7) is installed on one side of the protective box (1), and the stud (8) is rotatably sleeved on the mounting base (7).

4. The anti-jamming low-torque guide shut-off valve according to claim 1, characterized in that: The hydraulic telescopic mechanism includes two hydraulic cylinders (4) fixed to one side of the protective box (1) by a fastener (14). The piston rod ends of the two hydraulic cylinders (4) are fixed to one side of the L-shaped connecting plate (3). The two hydraulic cylinders (4) are connected by a synchronous control system.

5. The anti-jamming low-torque guide shut-off valve according to claim 1, characterized in that: The valve plate (10) has a threaded blind hole at the upper middle part, and the stud (8) passes through the threaded blind hole.

6. The anti-jamming low-torque guide shut-off valve according to claim 1, characterized in that: A support platform (12) is installed at the lower end of the valve body (11).

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