CN220378894U

CN220378894U - Pneumatic butterfly valve

Info

Publication number: CN220378894U
Application number: CN202320435155.2U
Authority: CN
Inventors: 谢华根; 胡晟; 瞿涛; 洪洲; 陈芳; 郭强; 高飞; 王学芹; 伍林从
Original assignee: Xinyu Iron and Steel Co Ltd
Current assignee: Xinyu Iron and Steel Co Ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2024-01-23
Anticipated expiration: 2033-03-09

Abstract

The utility model discloses a pneumatic butterfly valve, which comprises a valve body (2) and a valve plate (1), wherein the valve plate (1) is arranged in the valve body (2), a pin shaft (3) is arranged on the valve body (2), the valve plate (1) is movably connected with the valve body (2) through the pin shaft (3), and the pin shaft (3) is connected with an adjusting mechanism for controlling the opening and closing of the valve plate (1).

Description

Pneumatic butterfly valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a pneumatic butterfly valve.

Background

Most of the coking ovens are intermittent production processes of thermal coal charging and thermal coke discharging, raw coal gas is produced by high-temperature carbonization of coal materials in a carbonization chamber, and the raw coal gas contains a large amount of chemical substances which damage human health and seriously pollute the environment and must be exported for recovery and purification. The equipment of raw gas export system includes: riser, water seal valve, bridge pipe, ammonia water spraying system, gas collecting pipe, air suction elbow, butterfly valve, air suction pipe, etc.

At present, a traditional pneumatic butterfly valve is provided with two air pipes, one air pipe is used for ventilating and driving a valve plate to open, the other air pipe is used for driving the valve plate to close, no proper independent mechanism is used for managing the opening and closing of the valve plate, when an air circuit fails, the valve plate can not be closed, raw gas is easy to leak, danger is caused, and the environment is polluted.

The utility model patent with the publication number of CN211175421U discloses a soft sealing pneumatic butterfly valve on the 8 th month and 4 th day of 2020, and the soft sealing pneumatic butterfly valve comprises a pneumatic butterfly valve, wherein a sealing gasket is arranged on the inner side of a lower valve body, a valve plate is arranged between the sealing gasket and the lower valve body, an air source connector is arranged at the upper end of the pneumatic butterfly valve, an electromagnetic flowmeter is connected on the inner side of the pneumatic butterfly valve, and electromagnetic sensing is arranged in a clamping block. The soft sealing pneumatic butterfly valve cannot control the opening and closing of the valve plate, cannot be automatically closed when raw gas leaks, and has low transmission efficiency.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a pneumatic butterfly valve which can automatically control the opening and closing of a valve plate, and has high transmission efficiency and low manufacturing cost.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the pneumatic butterfly valve comprises a valve body and a valve plate, wherein the valve plate is arranged in the valve body, a pin shaft is arranged on the valve body, the valve plate is movably connected with the valve body through the pin shaft, and the pin shaft is connected with an adjusting mechanism for controlling the valve plate to open and close.

The adjusting mechanism comprises a gear, a rack and a compression spring, wherein the rack comprises a first rack and a second rack, the compression spring comprises a first compression spring and a second compression spring, the gear is arranged at the upper end of the pin shaft, rack boxes are arranged on two sides of the gear, the rack and the compression spring are arranged in the rack boxes, and the gear is matched with the first rack and the second rack; the first compression spring is arranged at the bottom end of the first rack, and the first rack compresses the first compression spring; the second compression spring is arranged at the top end of the second rack, and the second rack compresses the second compression spring.

The rack box comprises a first rack box and a second rack box, a sealing cover is arranged at one end of the first rack box, an airtight end cover is arranged at one end of the second rack box, and an air vent is arranged on the airtight end cover.

The first compression spring is arranged at the bottom end inside the first rack box, and the second compression spring is arranged at the upper end inside the second rack box.

The sealing cover is clamped with the end part of the first rack box, and the airtight end cover is clamped with the end part of the second rack box.

The bottom end of the pin shaft extends into the valve plate, a connecting shaft is arranged at the bottom end of the valve plate, and the valve plate is rotationally connected with the valve body through the pin shaft and the connecting shaft.

And connecting flanges are arranged on two sides of the valve body.

The utility model has the technical effects that: by adopting the pneumatic butterfly valve, the valve plate is controlled to open and close through the adjusting mechanism, and when the gas circuit fails, the valve plate can be automatically closed, so that leakage is avoided, and danger and pollution are reduced; the adjusting mechanism is driven by the gear rack, so that the mechanical transmission efficiency is high, and the capacity loss is small; the device has simple structure and low manufacturing cost.

Drawings

The present specification includes the following drawings, the contents of which are respectively:

FIG. 1 is a front view in cross section of a pneumatic butterfly valve of the utility model;

FIG. 2 is a top view cross-sectional view of the pneumatic butterfly valve of the utility model.

Marked in the figure as: 1. a valve; 2. a valve body; 3. a pin shaft; 4. a first rack housing; 5. sealing cover; 6. a gear; 7. an airtight end cap; 8. a vent hole; 9. a first rack; 10. a first compression spring; 11. a second rack; 12. a second compression spring; 13. a first rack housing; 14. a second rack housing; 15. a connecting shaft; 16. and (5) connecting the flanges.

Detailed Description

The following detailed description of the embodiments of the utility model, given by way of example only, is presented in the accompanying drawings to aid those skilled in the art in a more complete, accurate and thorough understanding of the inventive concepts and aspects of the utility model, and to facilitate their practice.

As shown in fig. 1 and 2, the pneumatic butterfly valve comprises a valve body 2 and a valve plate 1, wherein the valve plate 1 is arranged in the valve body 2, a pin shaft 3 is arranged on the valve body 2, the valve plate 1 is movably connected with the valve body 2 through the pin shaft 3, and the pin shaft 3 is connected with an adjusting mechanism for controlling the valve plate 1 to open and close.

The pneumatic butterfly valve realizes the rotation of the valve plate 1 through the pin shaft 3, the valve plate 1 rotates to realize the opening and closing of the valve body 2, the adjusting mechanism can drive the pin shaft 3 to control the closing of the valve plate 1, the opening and closing of the valve body 2 are realized, the valve plate 1 can be automatically closed to block the discharge of raw gas when the raw gas leaks, the dangerous occurrence probability is reduced, and the pollution to the environment is reduced.

As shown in fig. 1 and 2, the adjusting mechanism comprises a gear 6, a rack and a compression spring, wherein the rack comprises a first rack 9 and a second rack 11, the compression spring comprises a first compression spring 10 and a second compression spring 12, the gear 6 is arranged at the upper end of the pin shaft 3, rack boxes 4 are arranged at two sides of the gear 6, the rack and the compression spring are arranged in the rack boxes 4, and the gear 6 is matched with the first rack 9 and the second rack 11; the first compression spring 10 is arranged at the bottom end of the first rack 9, and the first rack 9 compresses the first compression spring 10; the second compression spring 12 is disposed at the top end of the second rack 11, and the second rack 11 compresses the second compression spring 12. The regulating mechanism is reasonable in design, high in mechanical transmission efficiency and less in energy loss, the inner side of the rack box 4 is provided with an opening, the first rack 9 and the second rack 11 are matched with the gear 6 at the opening of the rack box 4, and the valve plate 1 can be controlled to open and close through the regulating mechanism, so that the valve body 2 can be opened and closed according to the air inlet pressure of the air vent 8, and the control of discharging or blocking of raw gas is realized.

The rack box 4 comprises a first rack box 13 and a second rack box 14, wherein one end of the first rack box 13 is provided with a sealing cover 5, one end of the second rack box 14 is provided with an airtight end cover 7, and the airtight end cover 7 is provided with a vent hole 8. The vent hole 8 is connected with the gas circuit, and when the pressure of the vent hole 8 is larger than the elasticity of the compression spring, the valve plate 1 is opened, so that raw gas can be discharged; when the vent hole 8 is pressureless or smaller than the elasticity of the compression spring, the valve plate 1 is closed under the action of the compression spring, so that the discharge of raw gas can be blocked, and when the gas circuit fails, the valve plate can be automatically closed to avoid leakage.

The first compression spring 10 is disposed at the bottom end inside the first rack housing 13, and the second compression spring 12 is disposed at the upper end inside the second rack housing 14. The first compression spring 10 and the second compression spring 12 are arranged at the first rack box 13 and the second rack box 14 at different ends, and are consistent with the moving directions of the first rack 9 and the second rack 11, and when the gear 6 rotates, the moving directions of the two racks are opposite, so that the compression springs can be simultaneously extruded.

As shown in fig. 2, the sealing cover 5 is engaged with the end of the first rack housing 13, and the airtight end cover 7 is engaged with the end of the second rack housing 14. The sealing cover 5 has a sealing effect on the first rack box 13, the sealing cover 5 and the airtight end cover 7 are both connected with the rack box 4 stably through clamping, and parts inside the rack box 4 can be conveniently detached and installed through clamping.

The bottom end of the pin shaft 3 stretches into the valve plate 1, the bottom end of the valve plate 1 is provided with a connecting shaft 15, and the valve plate 1 is rotationally connected with the valve body 2 through the pin shaft 3 and the connecting shaft 15. The pin shaft 3 and the connecting shaft 15 fix the position of the valve plate 1 in the valve body 2, so that the valve plate 1 can rotate around the pin shaft 3 and the connecting shaft 15 to realize the opening and closing of the valve plate 1.

The valve body 2 is provided with connecting flanges 16 on both sides. The connecting flange 16 is arranged to facilitate the connection and installation of the valve body 2 with other valve bodies 2 or pipelines.

As shown in fig. 1 and 2, when the pneumatic butterfly valve works, the vent hole 8 is connected with the air passage, after the vent hole 8 is in air, acting force is generated on the right rack 9, the second rack 11 moves upwards and drives the gear 6 to rotate, the gear 6 rotates to drive the first rack 9 to move, the movement of the rack extrudes the first compression spring 10 and the second compression spring 12, the gear 6 is connected with the pin shaft 3 to drive the valve plate 1 to rotate, and the valve plate 1 is communicated with and closed by rotating the valve plate 2. When the pressure of the vent hole 8 is larger than the elasticity of the compression spring, the valve plate 1 is opened, so that raw gas can be discharged; when the vent hole 8 is pressureless or smaller than the elasticity of the compression spring, the valve plate 1 is closed under the action of the compression spring 10, so that raw gas leakage is avoided, the occurrence probability of danger is reduced, and air pollution is reduced.

According to the pneumatic butterfly valve, the valve plate 1 is controlled to be opened and closed through the adjusting mechanism, when the air circuit fails, the valve plate 1 can be automatically closed, leakage is avoided, and danger and pollution are reduced; the mechanical transmission efficiency is high and the capacity loss is small through the transmission of the gear 6 and the rack; the device has simple structure and low manufacturing cost.

The utility model is described above by way of example with reference to the accompanying drawings. It will be clear that the utility model is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present utility model; or the utility model is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the utility model.

Claims

1. A pneumatic butterfly valve, characterized in that: the valve comprises a valve body (2) and a valve plate (1), wherein the valve plate (1) is arranged in the valve body (2), a pin shaft (3) is arranged on the valve body (2), the valve plate (1) is movably connected with the valve body (2) through the pin shaft (3), and the pin shaft (3) is connected with an adjusting mechanism for controlling the valve plate (1) to open and close.

2. The pneumatic butterfly valve of claim 1, wherein: the adjusting mechanism comprises a gear (6), racks and compression springs, wherein the racks comprise a first rack (9) and a second rack (11), the compression springs comprise a first compression spring (10) and a second compression spring (12), the gear (6) is arranged at the upper end of the pin shaft (3), rack boxes (4) are arranged on two sides of the gear (6), the racks and the compression springs are arranged in the rack boxes (4), and the gear (6) is matched with the first rack (9) and the second rack (11); the first compression spring (10) is arranged at the bottom end of the first rack (9), and the first rack (9) compresses the first compression spring (10); the second compression spring (12) is arranged at the top end of the second rack (11), and the second rack (11) compresses the second compression spring (12).

3. The pneumatic butterfly valve of claim 2, wherein: the rack box (4) comprises a first rack box (13) and a second rack box (14), a sealing cover (5) is arranged at one end of the first rack box (13), an airtight end cover (7) is arranged at one end of the second rack box (14), and an air vent (8) is arranged on the airtight end cover (7).

4. A pneumatic butterfly valve according to claim 3, wherein: the first compression spring (10) is arranged at the bottom end inside the first rack box (13), and the second compression spring (12) is arranged at the upper end inside the second rack box (14).

5. The pneumatic butterfly valve of claim 4, wherein: the sealing cover (5) is clamped with the end part of the first rack box (13), and the airtight end cover (7) is clamped with the end part of the second rack box (14).

6. The pneumatic butterfly valve of claim 1, wherein: the bottom end of the pin shaft (3) stretches into the valve plate (1), a connecting shaft (15) is arranged at the bottom end of the valve plate (1), and the valve plate (1) is rotationally connected with the valve body (2) through the pin shaft (3) and the connecting shaft (15).

7. The pneumatic butterfly valve of claim 1, wherein: connecting flanges (16) are arranged on two sides of the valve body (2).