Anti-wedging limiting device for high-temperature and high-pressure gate valve

Abstract

The utility model discloses a high-temperature and high-pressure gate valve anti-dead-wedging limiting device which comprises a valve body, a screw is arranged in the valve body in a sleeved mode, the end of the screw is connected with a gate plate in a rotating mode, a machining assembly is arranged outside the gate plate, and the machining assembly comprises a limiting assembly arranged outside the gate plate. When the valve body needs to be closed, the screw rod is rotated, the gate plate is pushed downwards, the interior of the valve body is closed, in order to prevent the gate plate from being wedged to the interior of the valve body, the gate plate needs to be limited, and when the screw rod rotates towards the interior of the valve body, a transverse plate rotationally connected with the outer wall of the screw rod moves downwards along with the screw rod; the transverse plate drives the sliding rod and the sealing ring to slide towards the interior of the air pipe, and due to the fact that the sealing ring slides in the air pipe in a sealed mode, under limitation, the sealing ring pushes air in the air pipe, the air bag communicated with the air pipe expands, the expanded air bag makes contact with the bottom of the flashboard, and under blocking of the air bag, the flashboard and the valve body can be prevented from being tightly wedged.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valve wedging prevention, in particular to a high-temperature and high-pressure gate valve wedging prevention limiting device. Background Art

[0002] High-temperature, high-pressure gate valves are designed specifically for high-temperature, high-pressure environments and are widely used in industries such as petroleum, chemical, electric power, and metallurgy. These valves are typically made of high-temperature, high-pressure resistant materials to ensure performance and reliability under harsh conditions. Their design emphasizes corrosion and wear resistance, and they feature excellent sealing properties to prevent media leakage. The anti-wedging limiter on high-temperature, high-pressure gate valves prevents the valve from being unable to open and close properly due to wedging in high-temperature, high-pressure environments. The design and application of this device is crucial to ensuring the safe and stable operation of industrial systems.

[0003] When the existing gate valve is in use, it does not have an anti-wedge limit function, which causes the gate plate to be wedged and makes the gate valve inconvenient to use.

[0004] Therefore, we propose a high-temperature and high-pressure gate valve anti-wedge limit device that can prevent the gate from wedging and make the gate valve easier to use. Utility Model Content

[0005] The purpose of the utility model is to provide a high-temperature and high-pressure gate valve anti-wedging limit device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-temperature and high-pressure gate valve anti-wedging limit device, comprising a valve body, a screw sleeved inside the valve body, a gate plate rotatably connected to the end of the screw, and a processing component arranged on the outside of the gate plate, the processing component including a limit component arranged on the outside of the gate plate, and an auxiliary component arranged above the limit component.

[0007] Preferably, the limiting assembly includes a fixed block fixedly mounted on the outer wall of the valve body, an air pipe is sleeved inside the fixed block, an air bag is connected to the end of the air pipe, a sealing ring is slidingly arranged inside the air pipe, a sliding rod is fixedly mounted on the side wall of the sealing ring, a cross plate is fixedly mounted on the end of the sliding rod, and a limiting ring is fixedly mounted on the outer wall of the screw.

[0008] Preferably, the auxiliary component includes a slide groove opened on the top surface of the horizontal plate, a spring is arranged inside the slide groove, a limit plate is fixedly installed on the end of the spring, a clamping column is fixedly installed on the side of the limit plate away from the spring, and a sleeve block is slidingly arranged on the outer wall of the clamping column.

[0009] Preferably, the sealing ring slides in a sealing manner with the inside of the trachea, and the airbag is made of a flexible material. When the sealing ring slides toward the inside of the trachea, the sealing ring pushes the gas inside the trachea to expand the airbag. The airbag made of flexible material contacts and fits with the bottom of the gate plate, thereby achieving a sealing effect and limiting the gate plate to prevent the gate plate from being wedged against the valve body.

[0010] Preferably, there are two trachea, which are symmetrically distributed about the center line of the transverse plate. Under the restriction of the trachea, gas can be evenly delivered to the airbag to expand the airbag.

[0011] Preferably, the end of the clamping column is spherically arranged, and the sleeve block is fixedly installed on the outer wall of the limiting ring. The spherical arrangement of the clamping column can make it easier to be squeezed with the sleeve block.

[0012] Preferably, one end of the spring is fixedly installed on the inner wall of the slide groove, and the end of the spring away from the inner wall of the slide groove is fixedly installed on the side of the limit plate away from the clamping column. When the clamping column is not squeezed, the clamping column can be reset under the elastic action of the spring.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The anti-wedge limit device of the high-temperature and high-pressure gate valve is composed of a limit assembly. When the valve body needs to be closed, the screw is rotated to push the gate downward to close the inside of the valve body. In order to prevent the gate from being wedged with the inside of the valve body, the gate needs to be limited. When the screw rotates toward the inside of the valve body, the horizontal plate connected to the outer wall of the screw rotates downward, and the horizontal plate drives the sliding rod and the sealing ring to slide toward the inside of the air pipe. Due to the sealing ring and the inside of the air pipe, the sealing ring pushes the gas inside the air pipe under its restriction, so that the air pipe is connected. The airbag expands, making the expanded airbag contact with the bottom of the gate plate. Under the obstruction of the airbag, the gate plate and the valve body can be prevented from being wedged. When the gate plate needs to be opened, the screw is turned to make the cross plate drive the sliding rod and the sealing ring to move upward. The sealing ring pumps the gas inside the trachea to stop the expansion of the airbag. At this time, the airbag no longer contacts the bottom of the gate plate, avoiding the gate plate and the inside of the valve body from being stuck. The contracted airbag can create a gap between the gate plate and the valve body to achieve the effect of preventing wedging. Under the support of the limit ring, the screw can be made to move up and down, driving the cross plate to move with it.

[0015] 2. The anti-wedge limit device of the high-temperature and high-pressure gate valve is composed of an auxiliary component. When the clamping column is clamped with the sleeve block fixedly installed on the outer wall of the limit ring, the screw can be prevented from rotating at will, so that when the gate plate closes the inside of the valve body, the screw can be prevented from accidentally rotating to open the gate plate. When the screw needs to be rotated, the screw can be turned with increased force to squeeze the sleeve block on the spherical surface of the end of the clamping column, so that the clamping column drives the limit plate to slide into the inside of the slide groove, and compresses the spring to rotate the screw to open the gate plate. This structure can limit the rotation of the screw to avoid accidental rotation of the screw, which will cause the gate plate to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional appearance diagram of the structure of this utility model.

[0017] Figure 2 It is a three-dimensional cross-sectional view of the structure of the utility model.

[0018] Figure 3 This is a diagram of the structural limiting components of the utility model.

[0019] Figure 4 It is a partial schematic diagram of the structural limiting component of the utility model.

[0020] Figure 5 This is a diagram of the auxiliary components of the structure of this utility model.

[0021] Figure 6 It is a cross-sectional schematic diagram of the auxiliary components of the structure of the present utility model.

[0022] In the figure: 1. valve body; 2. screw; 3. gate; 4. processing assembly; 41. limit assembly; 42. auxiliary assembly; 411. fixing block; 412. air pipe; 413. air bag; 414. sealing ring; 415. sliding rod; 416. cross plate; 417. limit ring; 421. slide groove; 422. spring; 423. limit plate; 424. clamping column; 425. sleeve block. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings.

[0024] Example 1: A preferred embodiment of a high-temperature and high-pressure gate valve anti-wedge limit device provided by the present invention is as follows: Figures 1 to 6 Shown: A high-temperature and high-pressure gate valve anti-wedging limit device, including a valve body 1;

[0025] The valve body 1 is sleeved with a screw 2;

[0026] The end of the screw 2 is rotatably connected to a gate 3;

[0027] And a processing component 4 is arranged on the outside of the gate plate 3, the processing component 4 includes a limit component 41 arranged on the outside of the gate plate 3, the limit component 41 includes a fixed block 411 fixedly installed on the outer wall of the valve body 1, an air pipe 412 is sleeved inside the fixed block 411, an air bag 413 is connected to the end of the air pipe 412, a sealing ring 414 is slidingly arranged inside the air pipe 412, a sliding rod 415 is fixedly installed on the side wall of the sealing ring 414, a cross plate 416 is fixedly installed on the end of the sliding rod 415, and a limit ring 417 is fixedly installed on the outer wall of the screw 2.

[0028] In this embodiment, when the valve body 1 needs to be closed, the screw 2 is rotated, which pushes the gate 3 downward to close the inside of the valve body 1. In order to prevent the gate 3 from being wedged with the inside of the valve body 1, the gate 3 needs to be limited. When the screw 2 rotates toward the inside of the valve body 1, the horizontal plate 416 connected to the outer wall of the screw 2 is rotated downward, and the horizontal plate 416 drives the sliding rod 415 and the sealing ring 414 to slide toward the inside of the air pipe 412. Since the sealing ring 414 slides in a sealed manner with the inside of the air pipe 412, under its restriction, the sealing ring 414 pushes the gas inside the air pipe 412, so that the air bag 413 provided for communication with the air pipe 412 is expanded, and the expanded air bag 413 is expanded. It contacts the bottom of the gate plate 3 and is blocked by the airbag 413 to prevent the gate plate 3 and the valve body 1 from being wedged. When the gate plate 3 needs to be opened, the screw 2 is rotated to make the cross plate 416 drive the slide rod 415 and the sealing ring 414 to move upward. The sealing ring 414 pumps the gas inside the air pipe 412 to prevent the airbag 413 from expanding. At this time, the airbag 413 no longer contacts the bottom of the gate plate 3, avoiding the gate plate 3 and the inside of the valve body 1 from being stuck. The contracted airbag 413 can create a gap between the gate plate 3 and the valve body 1 to achieve the effect of preventing wedging. With the support of the limit ring 417, the screw 2 can move up and down, driving the cross plate 416 to move accordingly.

[0029] Furthermore, the sealing ring 414 slides in a sealed manner with the inside of the trachea 412, and the airbag 413 is made of a flexible material. When the sealing ring 414 slides into the inside of the trachea 412, the sealing ring 414 pushes the gas inside the trachea 412 to expand the airbag 413. The airbag 413 made of a flexible material contacts and fits with the bottom of the gate plate 3, which can achieve a sealing effect and can limit the gate plate 3 to prevent the gate plate 3 from being wedged with the valve body 1.

[0030] Furthermore, there are two air tubes 412 symmetrically distributed about the center line of the transverse plate 416 . Under the restriction of the air tubes 412 , gas can be evenly delivered to the airbag 413 to expand the airbag 413 .

[0031] Example 2: Based on Example 1, a preferred embodiment of a high-temperature and high-pressure gate valve anti-wedge limit device provided by the present invention is as follows: Figures 1 to 6 As shown: the auxiliary component 42 includes a slide groove 421 opened on the top surface of the horizontal plate 416, a spring 422 is arranged inside the slide groove 421, a limit plate 423 is fixedly installed on the end of the spring 422, a clamping column 424 is fixedly installed on the side of the limit plate 423 away from the spring 422, and a sleeve block 425 is slidingly provided on the outer wall of the clamping column 424.

[0032] In this embodiment, when the clamping column 424 is clamped with the sleeve 425 fixedly installed on the outer wall of the limit ring 417, the screw 2 can be prevented from rotating at will, so that when the gate plate 3 is closed to the inside of the valve body 1, the screw 2 can be prevented from rotating accidentally, causing the gate plate 3 to open. When the screw 2 needs to be rotated, the screw 2 can be rotated with increased force, so that the sleeve 425 squeezes the spherical surface of the end of the clamping column 424, so that the clamping column 424 drives the limit plate 423 to slide into the inside of the slide groove 421 and compresses the spring 422, so that the screw 2 can be rotated to open the gate plate 3. This structure can limit the rotation of the screw 2 to avoid accidental rotation of the screw 2, which causes the gate plate 3 to open.

[0033] Furthermore, the end of the clamping column 424 is spherically arranged, and the sleeve 425 is fixedly installed on the outer wall of the limiting ring 417. The spherical arrangement of the clamping column 424 can make it easier to be squeezed with the sleeve 425.

[0034] In addition, one end of the spring 422 is fixedly installed on the inner wall of the slide groove 421, and the end of the spring 422 away from the inner wall of the slide groove 421 is fixedly installed on the side of the limit plate 423 away from the clamping column 424. When the clamping column 424 is not squeezed, the clamping column 424 can be reset under the elastic action of the spring 422.

[0035] The above is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any technician in this field without departing from the concept and principle of the present invention should fall within the scope of protection of the present invention. It should also be noted that the various components of the present invention are not limited to the above-mentioned overall application. The various technical features described in the specification of the present invention can be selected for use alone or in combination according to actual needs. Therefore, the present invention naturally covers other combinations and specific applications related to the utility model points of this case.

Claims

1. A high-temperature and high-pressure gate valve anti-wedging limit device, comprising a valve body (1); A screw (2) is sleeved inside the valve body (1); The end of the screw (2) is rotatably connected to a gate plate (3); and a processing assembly (4) arranged outside the gate (3), characterized in that: The processing assembly (4) comprises a limiting assembly (41) arranged outside the gate plate (3), and an auxiliary assembly (42) is arranged above the limiting assembly (41); The limiting assembly (41) includes a fixed block (411) fixedly mounted on the outer wall of the valve body (1), an air tube (412) is sleeved inside the fixed block (411), an air bag (413) is connected to the end of the air tube (412), a sealing ring (414) is slidably mounted inside the air tube (412), a sliding rod (415) is fixedly mounted on the side wall of the sealing ring (414), a transverse plate (416) is fixedly mounted on the end of the sliding rod (415), and a limiting ring (417) is fixedly mounted on the outer wall of the screw rod (2).

2. A high-temperature and high-pressure gate valve anti-wedging limit device according to claim 1, characterized in that: The auxiliary component (42) includes a slide groove (421) provided on the top surface of the horizontal plate (416), a spring (422) is provided inside the slide groove (421), a limit plate (423) is fixedly installed at the end of the spring (422), a clamping column (424) is fixedly installed on the side of the limit plate (423) away from the spring (422), and a sleeve block (425) is slidably provided on the outer wall of the clamping column (424).

3. The anti-wedge limit device for high-temperature and high-pressure gate valves according to claim 1, characterized in that: The sealing ring (414) slides in a sealed manner inside the trachea (412), and the airbag (413) is made of a flexible material.

4. The high-temperature and high-pressure gate valve anti-wedging limit device according to claim 1, characterized in that: There are two air pipes (412), which are symmetrically distributed about the center line of the transverse plate (416).

5. The anti-wedge limit device for high-temperature and high-pressure gate valves according to claim 2, characterized in that: The end of the clamping column (424) is spherically arranged, and the sleeve block (425) is fixedly mounted on the outer wall of the limiting ring (417).

6. A high-temperature and high-pressure gate valve anti-wedging limit device according to claim 2, characterized in that: One end of the spring (422) is fixedly mounted on the inner wall of the slide groove (421), and one end of the spring (422) away from the inner wall of the slide groove (421) is fixedly mounted on a side of the limiting plate (423) away from the clamping column (424).

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