Manual flat gate valve with double-sealing structure

Abstract

The utility model discloses a manual flat gate valve with a double-sealing structure, and relates to the technical field of flat gate valves. The device comprises a valve body, the inner wall of the valve body is in sliding connection with a gate plate, the inner wall of the gate plate is fixedly connected with a screw rod through a fixing hole, the fixing hole is formed in the wall of the gate plate, and the outer wall of the screw rod is in threaded connection with an internal thread handle; the adjusting device obtains the functions of medium circulation and medium circulation blocking by changing the position of the adjusting device; pushing strips are symmetrically and fixedly connected to the side wall of the interior of the valve body. The adjusting device further comprises a limiting sliding device, an auxiliary linkage device is connected to the outer wall of the limiting sliding device in a sliding mode, a balancing device is fixedly connected to the inner wall of the gate plate, and the limiting sliding device and the auxiliary linkage device are arranged, so that a gap between the valve seat ring in the valve body and the gate plate is smaller; therefore, the two sides of the flat gate valve are sealed, and the purpose of double sealing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of flat gate valve technology, specifically to a manual flat gate valve with a double sealing structure. Background Technology

[0002] Gate valves are key devices for controlling media flow in industrial production and various fluid transport systems. However, traditional manual flat gate valves have shortcomings in sealing performance and operational stability. In practical applications, some gate valves are prone to media leakage due to defects in their sealing structure design. This not only wastes resources but may also pose a threat to the environment and production safety. Utility Model Content

[0003] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a manual flat gate valve with a double-sealed structure, comprising: a valve body, a gate plate slidably connected to the inner wall of the valve body, a screw fixedly connected to the inner wall of the gate plate through a fixing hole, the fixing hole being opened in the wall of the gate plate, and an internally threaded handle threadedly connected to the outer wall of the screw; an adjusting device, which changes its own position to obtain the function of flowing medium and blocking the flow of medium; push strips symmetrically fixedly connected to the side walls inside the valve body; the adjusting device further includes a limiting sliding device, an auxiliary linkage device slidably connected to the outer wall of the limiting sliding device, a balancing device fixedly connected to the inner wall of the gate plate, and a connecting ring fixedly connected to the outer wall of the top of the gate plate.

[0004] Preferably, the outer wall of the internal thread handle is rotatably connected to the outer wall of the valve body, the inner side wall of the connecting ring is fixedly connected to the outer wall of the screw, and the outer wall of the screw is slidably connected to the inner wall of the valve body.

[0005] Preferably, the limiting sliding device includes a first sliding plate, a limiting tube is fixedly connected to the outer wall of the first sliding plate, the outer wall of the limiting tube is slidably connected to the outer wall of the gate through a first limiting groove, and the first limiting groove is opened in the wall of the first sliding plate, and the side wall of the first sliding plate is symmetrically provided with first inclined grooves.

[0006] Preferably, the auxiliary linkage device includes a second sliding plate, and a push tube is fixedly connected to the outer wall of the second sliding plate. The outer wall of the push tube is slidably connected to the outer wall of the gate through a second limiting groove. The second limiting groove is opened in the wall of the second sliding plate, and a second inclined groove is symmetrically opened on the side wall of the second sliding plate. By setting the limiting sliding device and the auxiliary linkage device, the gap between the valve seat ring and the gate in the valve body is smaller, so that both sides of the flat gate valve can obtain a sealing effect, thereby obtaining a double sealing effect.

[0007] Preferably, the outer wall of the first sliding plate is slidably connected to the outer wall of the push bar through a first inclined groove, the outer wall of the second sliding plate is slidably connected to the outer wall of the push bar through a second inclined groove, and both the outer walls of the first and second sliding plates are slidably connected to the inner wall of the gate.

[0008] Preferably, the balancing device includes a damping rod, the outer wall of which is provided with a compression spring. The outer wall of the damping rod is fixedly connected to the inner wall of the gate plate, and the outer wall of the compression spring is fixedly connected to the inner wall of the gate plate. By setting up the balancing device, the first sliding plate and the second sliding plate are subjected to uniform force, thereby enabling more stable movement.

[0009] The beneficial effects of this utility model are as follows:

[0010] 1. By setting a limiting sliding device and an auxiliary linkage device, this utility model makes the gap between the valve seat ring and the gate plate in the valve body smaller, thereby enabling the flat gate valve to achieve a sealing effect on both sides, thus achieving a double sealing effect.

[0011] 2. This utility model, by incorporating a balancing device, ensures that the first and second sliding plates are subjected to uniform force, thereby enabling more stable movement. The gate valve, through a unique limiting sliding device and auxiliary linkage device, effectively reduces the gap between the valve seat ring and the gate plate within the valve body, achieving a double-seal effect on both sides and improving sealing performance. Simultaneously, the balancing device ensures that the first and second sliding plates are subjected to uniform force, allowing them to move more stably, reducing component wear, and improving the overall stability and reliability of the gate valve. Attached Figure Description

[0012] Figure 1 This is the front view of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Figure 3 This is a partial structural schematic diagram of the adjusting device of this utility model;

[0015] Figure 4 This is a cross-sectional view of the adjusting device of this utility model;

[0016] Figure 5 This is a partial structural diagram of the limiting sliding device of this utility model.

[0017] In the diagram: 1. Valve body; 2. Screw; 3. Internal threaded handle; 4. Adjusting device; 5. Push bar; 41. Gate; 42. Limiting sliding device; 43. Auxiliary linkage device; 44. Connecting ring; 45. Fixing hole; 46. Balancing device; 421. First sliding plate; 422. Limiting tube; 423. First limiting groove; 424. First inclined groove; 431. Second sliding plate; 432. Push tube; 433. Second limiting groove; 434. Second inclined groove; 461. Damping rod; 462. Compression spring. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] Example: Please refer to Figure 1 - Figure 5 This utility model provides a technical solution: a manual flat gate valve with a double-sealed structure, comprising: a valve body 1, a gate plate 41 slidably connected to the inner wall of the valve body 1, a screw 2 fixedly connected to the inner wall of the gate plate 41 through a fixing hole 45, the fixing hole 45 being opened in the wall of the gate plate 41, and an internally threaded handle 3 threadedly connected to the outer wall of the screw 2; an adjusting device 4, which has the function of obtaining the flow of medium and blocking the flow of medium by changing its own position; push strips 5 symmetrically fixedly connected to the inner side wall of the valve body 1; the adjusting device 4 also includes a limiting sliding device 42, an auxiliary linkage device 43 slidably connected to the outer wall of the limiting sliding device 42, a balancing device 46 fixedly connected to the inner wall of the gate plate 41, a connecting ring 44 fixedly connected to the outer wall of the top of the gate plate 41, the outer wall of the internally threaded handle 3 being rotatably connected to the outer wall of the valve body 1, the inner side wall of the connecting ring 44 being fixedly connected to the outer wall of the screw 2, and the outer wall of the screw 2 being slidably connected to the inner wall of the valve body 1.

[0020] The limiting sliding device 42 includes a first sliding plate 421. A limiting tube 422 is fixedly connected to the outer wall of the first sliding plate 421. The outer wall of the limiting tube 422 is slidably connected to the outer wall of the gate plate 41 through a first limiting groove 423. The first limiting groove 423 is opened in the wall of the first sliding plate 421. The side wall of the first sliding plate 421 is symmetrically provided with first inclined grooves 424.

[0021] The auxiliary linkage device 43 includes a second sliding plate 431. A push tube 432 is fixedly connected to the outer wall of the second sliding plate 431. The outer wall of the push tube 432 is slidably connected to the outer wall of the gate plate 41 through a second limiting groove 433. The second limiting groove 433 is formed in the wall of the second sliding plate 431. The side wall of the second sliding plate 431 is symmetrically provided with second inclined grooves 434. Through the sliding cooperation of the first inclined groove 424, the second inclined groove 434 and the push bar 5, the first sliding plate 421 and the second sliding plate 431 slide within the gate plate 41. Meanwhile, the limiting tube 422 of the first sliding plate 421 and the pushing tube 432 of the second sliding plate 431 slide stably within the corresponding second limiting groove 433 and first limiting groove 423. On this basis, during the process of the gate plate 41 falling, that is, during the process of the adjusting device 4 gradually connecting the valve body 1, the limiting sliding device 42 and the auxiliary linkage device 43 pushed by the pushing bar 5 move towards both sides of the gate plate 41, thereby driving the limiting tube 422 and the pushing tube 432 to expand outward, thereby making the gap between the valve seat ring and the gate plate 41 in the valve body 1 smaller.

[0022] The outer wall of the first sliding plate 421 is slidably connected to the outer wall of the push bar 5 through the first inclined groove 424, and the outer wall of the second sliding plate 431 is slidably connected to the outer wall of the push bar 5 through the second inclined groove 434. The outer walls of the first sliding plate 421 and the second sliding plate 431 are both slidably connected to the inner wall of the gate plate 41.

[0023] The balancing device 46 includes a damping rod 461, and a compression spring 462 is provided on the outer wall of the damping rod 461. The outer wall of the damping rod 461 is fixedly connected to the inner wall of the gate plate 41, and the outer wall of the compression spring 462 is fixedly connected to the inner wall of the gate plate 41. The damping rod 461 and the compression spring 462 in the balancing device 46 play a buffering and balancing role during the movement of the gate plate 41, so that the first sliding plate 421 and the second sliding plate 431 inside the gate plate 41 move more smoothly. Since the damping rod 461 and the compression spring 462 are symmetrically distributed on both sides inside the gate plate 41, when the first sliding plate 421 and the second sliding plate 431 move outward due to the push of the push bar 5, the damping rod 461 and the compression spring 462 block the force so that the first sliding plate 421 and the second sliding plate 431 are evenly stressed.

[0024] Working principle:

[0025] In use, the operator changes the position of the screw 2 by operating the internal thread handle 3, which in turn drives the position of the adjusting device 4. The rotating internal thread handle 3 drives the screw 2 to move through its own thread. Since the screw 2 is fixedly connected to the gate 41 through the fixing hole 45 and the connecting ring 44, and the screw 2 is slidably connected to the valve body 1, the rotation of the screw 2 will cause the gate 41 to slide up and down in the valve body 1, thereby obtaining the ability to block the medium and allow the medium to flow.

[0026] When the gate 41 moves, the push bars 5 on both sides interact with the first sliding plate 421 of the limiting sliding device 42 and the second sliding plate 431 of the auxiliary linkage device 43. When the gate 41 is located at the bottom of the valve body 1, the medium will pass through the hole on the adjusting device 4, that is, the pipe composed of the limiting tube 422 and the push tube 432. When the gate 41 is driven to rise by the screw 2, the gate 41 isolates the inside of the valve body 1, thereby blocking the medium from flowing out of the valve body 1. Through the sliding cooperation of the first inclined groove 424, the second inclined groove 434 and the push bar 5, the first sliding plate 421 and the second sliding plate 431 are within the gate 41. During the sliding motion, the limiting tube 422 of the first sliding plate 421 and the pushing tube 432 of the second sliding plate 431 slide stably within the corresponding second limiting groove 433 and first limiting groove 423. Based on this, during the descent of the gate 41, that is, during the process of the adjusting device 4 gradually connecting the valve body 1, the limiting sliding device 42 and the auxiliary linkage device 43, which are pushed by the pushing bar 5, move towards both sides of the gate 41, thereby causing the limiting tube 422 and the pushing tube 432 to expand outward, thus making the gap between the valve seat ring and the gate 41 in the valve body 1 smaller, so that both sides of the flat gate valve obtain a sealing effect, thereby obtaining a double sealing effect.

[0027] The damping rod 461 and compression spring 462 in the balancing device 46 play a buffering and balancing role during the movement of the gate 41, making the first sliding plate 421 and the second sliding plate 431 inside the gate 41 move more smoothly. Since the damping rod 461 and compression spring 462 are symmetrically distributed on both sides inside the gate 41, when the first sliding plate 421 and the second sliding plate 431 move outward due to the push of the push bar 5, the damping rod 461 and compression spring 462 block the force on the first sliding plate 421 and the second sliding plate 431, so that the first sliding plate 421 and the second sliding plate 431 are evenly stressed, thus allowing for more stable movement and avoiding tilting and damage to the gate 41 or other components due to uneven force.

[0028] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A manually operated flat gate valve with a double-sealing structure, characterized in that, include: Valve body (1), the inner wall of the valve body (1) is slidably connected to a gate plate (41), the inner wall of the gate plate (41) is fixedly connected to a screw (2) through a fixing hole (45), and the fixing hole (45) is opened in the wall of the gate plate (41), and the outer wall of the screw (2) is threadedly connected to an internal thread handle (3). Adjustment device (4), the adjustment device (4) obtains the function of flowing medium and blocking the flow of medium by changing its own position; The valve body (1) has push bars (5) symmetrically fixedly connected to the side wall inside. The adjusting device (4) also includes a limiting sliding device (42), the outer wall of the limiting sliding device (42) is slidably connected to an auxiliary linkage device (43), the inner wall of the gate (41) is fixedly connected to a balancing device (46), and the outer wall of the top of the gate (41) is fixedly connected to a connecting ring (44).

2. The manual flat gate valve with a double-sealing structure according to claim 1, characterized in that: The outer wall of the internal thread handle (3) is rotatably connected to the outer wall of the valve body (1), the inner side wall of the connecting ring (44) is fixedly connected to the outer wall of the screw (2), and the outer wall of the screw (2) is slidably connected to the inner wall of the valve body (1).

3. The manual flat gate valve with a double-sealing structure according to claim 1, characterized in that: The limiting sliding device (42) includes a first sliding plate (421), and a limiting tube (422) is fixedly connected to the outer wall of the first sliding plate (421). The outer wall of the limiting tube (422) is slidably connected to the outer wall of the gate (41) through a first limiting groove (423). The first limiting groove (423) is opened in the wall of the first sliding plate (421), and the side wall of the first sliding plate (421) is symmetrically provided with a first inclined groove (424).

4. A manual flat gate valve with a double-sealing structure according to claim 3, characterized in that: The auxiliary linkage device (43) includes a second sliding plate (431), and a push tube (432) is fixedly connected to the outer wall of the second sliding plate (431). The outer wall of the push tube (432) is slidably connected to the outer wall of the gate (41) through a second limiting groove (433). The second limiting groove (433) is opened in the wall of the second sliding plate (431), and the side wall of the second sliding plate (431) is symmetrically provided with a second inclined groove (434).

5. A manual flat gate valve with a double-sealing structure according to claim 4, characterized in that: The outer wall of the first sliding plate (421) is slidably connected to the outer wall of the push bar (5) through the first inclined groove (424), and the outer wall of the second sliding plate (431) is slidably connected to the outer wall of the push bar (5) through the second inclined groove (434). The outer walls of the first sliding plate (421) and the second sliding plate (431) are both slidably connected to the inner wall of the gate (41).

6. A manual flat gate valve with a double-sealing structure according to claim 1, characterized in that: The balancing device (46) includes a damping rod (461), and a compression spring (462) is provided on the outer wall of the damping rod (461). The outer wall of the damping rod (461) is fixedly connected to the inner wall of the gate (41), and the outer wall of the compression spring (462) is fixedly connected to the inner wall of the gate (41).

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