Gate valve with good sealing effect

Abstract

The utility model provides a gate valve with a good sealing effect, which relates to the technical field of gate valves and comprises a gate valve body, a sealing mechanism is arranged in the gate valve body and comprises a threaded pipe, a threaded rod is sleeved in the threaded pipe and the gate valve body, the threaded rod is in threaded connection with the threaded pipe, and the threaded pipe is connected with the gate valve body. A sliding column is connected into the gate valve body in a sleeved mode and connected with the gate valve body in a sliding mode. According to the gate valve, by arranging the sealing mechanism, the sealing effect of the gate plate of the gate valve is better, no gap exists between the gate plate and the gate valve, the extrusion block is arranged and can slightly rotate, and therefore the extrusion block can extrude the arc-shaped block and the sliding column; and the sliding column can drive the extrusion plate and the ethylene propylene diene monomer pad to slightly move.

Description

Technical Field

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

[0002] A gate valve is a linear motion valve that controls the flow or cut off of media in a pipeline by the vertical raising and lowering of a gate. Its key characteristic is that the flow resistance is extremely low when fully open, making it suitable for fully open or closed conditions, but not for regulating flow.

[0003] The gate of existing gate valves is located inside the valve and blocks water in the pipeline. Since the gate can only be adjusted vertically, the tightness of the contact between the gate and the inner wall of the valve cannot be controlled or adjusted. Therefore, there may be gaps between the gate and the inner wall of the valve, resulting in poor sealing effect and easy water leakage at the gate. As a result, existing gate valves are inconvenient to use. To address this, we provide a gate valve with better sealing performance. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing gate valves where the fit between the gate and the inner wall of the gate valve cannot be controlled, and to provide a gate valve with good sealing performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a gate valve with good sealing effect, comprising: a gate valve body, wherein a sealing mechanism is provided inside the gate valve body, the sealing mechanism includes a threaded tube, a threaded rod is sleeved inside the threaded tube and the gate valve body, the threaded rod is threadedly connected to the threaded tube, a sliding column is sleeved inside the gate valve body, the sliding column is slidably connected to the gate valve body, an arc-shaped block is fixedly connected to one end of the sliding column, a pressing block is sleeved inside the arc-shaped block, the pressing block is slidably connected to the arc-shaped block, a rotating groove that fits with the pressing block is opened on the arc-shaped block, a pressing plate is provided at one end of the sliding column, an EPDM rubber pad is provided on one side of the pressing plate, and an auxiliary mechanism is provided inside the gate valve body, the auxiliary mechanism including a sliding rod.

[0006] In a preferred embodiment, the threaded tube is fixedly connected to the gate valve body, the extrusion block is fixedly connected to the threaded rod, and the extrusion plate is fixedly connected to the sliding column.

[0007] In a preferred embodiment, the EPDM rubber pad is fixedly connected to the extrusion plate, and a rotating block is provided at one end of the threaded rod, the rotating block being fixedly connected to the threaded rod.

[0008] In a preferred embodiment, the sliding rod is sleeved inside the gate valve body, and the sliding rod is slidably connected to the gate valve body.

[0009] In a preferred embodiment, the sliding rod is fixedly connected to the extrusion plate, and a limiting piece is provided at one end of the sliding rod.

[0010] In a preferred embodiment, the limiting piece is fixedly connected to the sliding rod, and a spring is sleeved on the outer surface of the sliding rod.

[0011] In a preferred embodiment, the two ends of the spring are respectively fixedly connected to the outer surface of the limiting plate and the inner wall of the gate valve body.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] This invention improves the sealing effect at the gate of the gate valve by setting a sealing mechanism, eliminating gaps between the gate and the valve. A compression block, capable of slight rotation, compresses the arc-shaped block and sliding column, causing the sliding column to slightly move the compression plate and EPDM rubber gasket. This allows the EPDM rubber gasket to fit more tightly against the inner wall of the gate valve, achieving a better seal. An auxiliary mechanism, working in conjunction with the compression plate, enables the compression plate to automatically reset, ensuring that the positions of the compression plate and EPDM rubber gasket do not affect the vertical movement of the gate valve. Attached Figure Description

[0014] Figure 1 A perspective view of a gate valve with good sealing effect provided by this utility model.

[0015] Figure 2 A sectional perspective view of a gate valve with good sealing effect provided by this utility model.

[0016] Figure 3 This utility model provides a schematic diagram of the installation of an arc-shaped block for a gate valve with good sealing effect.

[0017] Figure 4 This utility model provides a schematic diagram of the spring installation for a gate valve with good sealing performance.

[0018] Figure 5 This utility model provides a schematic diagram of the installation of the extrusion block for a gate valve with good sealing effect.

[0019] Legend:

[0020] 1. Gate valve body; 2. Sealing mechanism; 3. Auxiliary mechanism; 21. Threaded pipe; 22. Threaded rod; 23. Sliding column; 24. Arc block; 25. Extrusion block; 26. Rotating groove; 27. Extrusion plate; 28. EPDM rubber pad;

[0021] 29. Rotating block; 31. Sliding rod; 32. Limiting plate; 33. Spring. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] like Figures 1-5 As shown, this utility model provides a technical solution: a gate valve with good sealing effect, comprising: a gate valve body 1, a sealing mechanism 2 provided inside the gate valve body 1, the sealing mechanism 2 including a threaded tube 21, a threaded rod 22 sleeved inside the threaded tube 21 and the gate valve body 1, the threaded rod 22 being threadedly connected to the threaded tube 21, a sliding column 23 sleeved inside the gate valve body 1, the sliding column 23 being slidably connected to the gate valve body 1, an arc-shaped block 24 fixedly connected to one end of the sliding column 23, a pressing block 25 sleeved inside the arc-shaped block 24, the pressing block 25 being slidably connected to the arc-shaped block 24. The arc-shaped block 24 has a rotating groove 26 that matches the extrusion block 25. One end of the sliding column 23 is provided with an extrusion plate 27. One side of the extrusion plate 27 is provided with an EPDM rubber pad 28. The gate valve body 1 is provided with an auxiliary mechanism 3. The auxiliary mechanism 3 includes a sliding rod 31. The threaded tube 21 is fixedly connected to the gate valve body 1. The extrusion block 25 is fixedly connected to the threaded rod 22. The extrusion plate 27 is fixedly connected to the sliding column 23. The EPDM rubber pad 28 is fixedly connected to the extrusion plate 27. One end of the threaded rod 22 is provided with a rotating block 29, which is fixedly connected to the threaded rod 22.

[0025] In this embodiment, by setting a threaded tube 21 and a threaded rod 22, with the threaded rod 22 threadedly connected to the threaded tube 21, the threaded rod 22 can rotate and move, allowing the extrusion block 25 to rotate and move simultaneously. Thus, the extrusion block 25 can extrude the arc-shaped block 24 and the sliding column 23, causing the arc-shaped block 24 and the sliding column 23 to drive the extrusion plate 27 and the EPDM rubber pad 28 closer to the inner wall of the gate valve body 1, until the EPDM rubber pad 28 is tightly fitted to the inner wall of the gate valve body 1, thereby allowing the gate valve body 1 to... There will be no water leakage at the internal gate. At the same time, the arc-shaped block 24 has a rotating groove 26 that matches the extrusion block 25. The size of the rotating groove 26 is slightly larger than that of the extrusion block 25. Thus, when the extrusion block 25 rotates, it can slightly change its position, allowing the arc-shaped block 24 to move to both sides of the extrusion block 25 to cooperate with the extrusion block 25 to perform the required rotation. Meanwhile, the EPDM rubber pad 28 has a certain elasticity, so after being squeezed, the EPDM rubber pad 28 can form a sealed connection with the inner wall of the gate valve body 1.

[0026] Example 2

[0027] like Figures 1-5 As shown, the sliding rod 31 is sleeved inside the gate valve body 1, and the sliding rod 31 is slidably connected to the gate valve body 1. The sliding rod 31 is fixedly connected to the extrusion plate 27. One end of the sliding rod 31 is provided with a limiting piece 32, which is fixedly connected to the sliding rod 31. A spring 33 is sleeved on the outer surface of the sliding rod 31, and the two ends of the spring 33 are fixedly connected to the outer surface of the limiting piece 32 and the inner wall of the gate valve body 1, respectively.

[0028] In this embodiment, by setting an auxiliary mechanism 3, the extrusion plate 27 and the EPDM rubber pad 28 can be reset in time after use, so as not to affect the normal use of the gate valve body 1. A sliding rod 31 is set, and the sliding rod 31 can compress the spring 33 by using the limiting plate 32, so that the spring 33 generates elastic force, and the elastic force of the spring 33 can automatically reset the extrusion plate 27 and the EPDM rubber pad 28 when released.

[0029] Working principle:

[0030] like Figures 1-5As shown, in use, the gate plate of the gate valve body 1 can be vertically adjusted first, so that the gate plate can initially seal the interior of the gate valve body 1. Then, the rotating block 29 is rotated, which drives the threaded rod 22 to rotate. At this time, the threaded rod 22 will rotate slightly with the cooperation of the threaded tube 21. At the same time, the threaded rod 22 can drive the pressing block 25 to rotate slightly, so that the pressing block 25 rotates and moves within the rotating groove 26 opened on the arc-shaped block 24. The pressing block 25 can also press the arc-shaped block 24, so that the arc-shaped block 24 can drive the sliding column 23 to slide inside the gate valve body 1, until the sliding column 23 drives the pressing plate 27 and the EPDM rubber pad 28 to move towards the inner wall of the gate valve body 1, and the EPDM rubber pad 28 can be slightly squeezed. The compression deformation allows the EPDM rubber pad 28 to fit tightly against the inner wall of the gate valve body 1, maintaining a good seal at the gate plate inside the gate valve body 1. Simultaneously, the compression plate 27 moves, driving the sliding rod 31 to slide. With the cooperation of the limiting plate 32, the sliding rod 31 compresses the spring 33, generating elastic force. If it is necessary to reset the compression plate 27 and the EPDM rubber pad 28, the rotating block 29 can drive the threaded rod 22 to rotate slightly in the opposite direction. At this time, the elastic force of the spring 33 will be released instantaneously, allowing the compression plate 27 and the EPDM rubber pad 28 to continuously reset. The sliding column 23 can drive the arc-shaped block 24 to remain in contact with the compression block 25 until the compression plate 27 and the EPDM rubber pad 28 are reset to the appropriate position.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A gate valve with good sealing performance, characterized in that, include: A gate valve body (1) is provided with a sealing mechanism (2) inside the gate valve body (1). The sealing mechanism (2) includes a threaded tube (21). A threaded rod (22) is sleeved inside the threaded tube (21) and the gate valve body (1). The threaded rod (22) is threadedly connected to the threaded tube (21). A sliding column (23) is sleeved inside the gate valve body (1). The sliding column (23) is slidably connected to the gate valve body (1). An arc-shaped block (24) is fixedly connected to one end of the sliding column (23). The arc-shaped block (24) is fitted with a compression block (25), the compression block (25) is slidably connected to the arc-shaped block (24), the arc-shaped block (24) is provided with a rotating groove (26) that fits with the compression block (25), one end of the sliding column (23) is provided with a compression plate (27), one side of the compression plate (27) is provided with a EPDM rubber pad (28), the gate valve body (1) is provided with an auxiliary mechanism (3), the auxiliary mechanism (3) includes a sliding rod (31).

2. The gate valve with good sealing effect according to claim 1, characterized in that: The threaded tube (21) is fixedly connected to the gate valve body (1), the extrusion block (25) is fixedly connected to the threaded rod (22), and the extrusion plate (27) is fixedly connected to the sliding column (23).

3. A gate valve with good sealing effect according to claim 2, characterized in that: The EPDM rubber pad (28) is fixedly connected to the extrusion plate (27), and a rotating block (29) is provided at one end of the threaded rod (22), and the rotating block (29) is fixedly connected to the threaded rod (22).

4. The gate valve with good sealing effect according to claim 1, characterized in that: The sliding rod (31) is sleeved inside the gate valve body (1), and the sliding rod (31) is slidably connected to the gate valve body (1).

5. A gate valve with good sealing effect according to claim 4, characterized in that: The sliding rod (31) is fixedly connected to the extrusion plate (27), and a limiting piece (32) is provided at one end of the sliding rod (31).

6. A gate valve with good sealing effect according to claim 5, characterized in that: The limiting piece (32) is fixedly connected to the sliding rod (31), and a spring (33) is sleeved on the outer surface of the sliding rod (31).

7. A gate valve with good sealing effect according to claim 6, characterized in that: The two ends of the spring (33) are fixedly connected to the outer surface of the limiting plate (32) and the inner wall of the gate valve body (1), respectively.

Images