CN219841066U

CN219841066U - Valve assembly of pneumatic valve

Info

Publication number: CN219841066U
Application number: CN202321282130.XU
Authority: CN
Inventors: 董丽丽
Original assignee: Shanghai Biruite Valve Group Co ltd
Current assignee: Shanghai Biruite Valve Group Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-10-17
Anticipated expiration: 2033-05-25

Abstract

The utility model discloses a valve assembly of a pneumatic valve, which comprises a valve body and an upper valve cover arranged above the valve body, wherein a side plate is arranged below one side of the interior of the upper valve cover, a piston is connected between the side plate and one side of the upper valve cover in a sliding manner, an air chamber is arranged below the piston, a spring is arranged inside the air chamber, a lifting toothed plate is arranged above the piston, one side of the lifting toothed plate is meshed with a driving gear, the other side of the driving gear is meshed with a driven gear, a valve rod is arranged on one side of the driven gear, which is far away from the driving gear, a rack meshed with the driven gear is arranged on one side of the valve rod, and a valve plate is fixedly connected after the lower end of the valve rod is inserted into the interior of the valve body. In the utility model, the air chamber is independently arranged in the valve cover, the air chamber is not connected with the valve rod, and the air chamber is connected with the rack through the gear, so that when the air in the air chamber is introduced or exhausted, no gas exists at the contact part between the valve rod and the valve body, and the gas is prevented from entering the valve body.

Description

Valve assembly of pneumatic valve

Technical Field

The utility model relates to the technical field of pneumatic valves, in particular to a valve component of a pneumatic valve.

Background

Valves are widely used as important components for controlling fluids in various industrial processes, and currently, valves commonly employ mechanical transmissions and rigid seals that fail over time due to mechanical wear and are prone to seizing and clogging of pipes when controlling fluids containing particulates.

The pneumatic valve is a valve commonly found in modern industry, a gap is formed between a transmission rod and a valve seat of the traditional pneumatic valve, and when the transmission rod slides on the valve seat, high-pressure gas in the air cavity easily leaks into the valve body from the gap between the valve rod and the valve seat to pollute substances in the valve body.

Disclosure of Invention

The utility model aims to provide a valve component of a pneumatic valve, which solves the problems that high-pressure gas in an air cavity chamber easily leaks into the valve body from a gap between a valve rod and a valve seat to pollute substances in the valve body in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a valve assembly of pneumatic valve, includes the valve body and installs the upper valve gap in the valve body top, the curb plate is installed to the inside one side below of upper valve gap, sliding connection has the piston between one side of curb plate and upper valve gap, the below of piston is established to the air chamber, the internally mounted of air chamber has the spring, the lift pinion rack is installed to the top of piston, the one side meshing of lift pinion rack has the driving gear, the opposite side meshing of driving gear has the driven gear, the one side that the driving gear was kept away from to the driven gear is equipped with the valve rod, one side that the valve rod is close to the driven gear is equipped with the rack with driven gear meshing, the rigid coupling has the valve plate behind the inside of valve rod lower extreme inserted the valve body.

Preferably, the middle parts of the driving gear and the driven gear are fixedly connected with a middle shaft, and the middle shaft is rotationally connected with the upper valve cover.

Preferably, the position below one side of the upper valve cover, which corresponds to the air chamber, is provided with an air inlet and outlet hole.

Preferably, the side plate is provided with a first limiting plate fixedly connected with one side, close to the lifting toothed plate, of the upper end.

Preferably, the second limiting plate is installed at the upper end of the valve rod, the guide rail is installed above the inner portion of the upper valve cover, and the second limiting plate slides in the guide rail.

Preferably, a third limiting plate is fixedly connected to the upper end of the lifting toothed plate.

Compared with the prior art, the utility model has the beneficial effects that: in the utility model, the air chamber is independently arranged in the valve cover, the air chamber is not connected with the valve rod, and the air chamber is connected with the rack through the gear, so that when the air in the air chamber is introduced or exhausted, no gas exists at the contact part between the valve rod and the valve body, and the gas is prevented from entering the valve body.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the valve stem of the present utility model when raised;

fig. 3 is a schematic view of the external structure of the present utility model.

In the figure: 1. a valve plate; 2. a valve body; 3. an upper valve cover; 4. air inlet and outlet holes; 5. lifting the toothed plate; 6. a drive gear; 7. a driven gear; 8. a valve stem; 9. a side plate; 10. a rack; 11. a first limiting plate; 12. a guide rail; 13. a second limiting plate; 14. a third limiting plate; 15. a piston; 16. a spring; 17. an air chamber.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 3, in the embodiment of the utility model, a valve assembly of a pneumatic valve comprises a valve body 2 and an upper valve cover 3 installed above the valve body 2, wherein a side plate 9 is installed below one side of the interior of the upper valve cover 3, a piston 15 is slidably connected between the side plate 9 and one side of the upper valve cover 3, an air chamber 17 is arranged below the piston 15, a spring 16 is installed inside the air chamber 17, an air inlet and outlet hole 4 is formed below one side of the upper valve cover 3 and corresponds to the air chamber 17, when air is introduced through the air inlet and outlet hole 4, the air in the air chamber 17 can push the piston 15 upwards, the spring 16 is stretched, when the air inlet and outlet hole 4 is discharged, the air chamber 17 loses high air pressure, at the moment, the piston 15 loses thrust, and then the spring 16 rebounds to pull the piston 15 downwards, so that the piston 15 returns;

referring to fig. 1 and 2, a lifting toothed plate 5 is installed above a piston 15, a driving gear 6 is engaged with one side of the lifting toothed plate 5, a driven gear 7 is engaged with the other side of the driving gear 6 (a central shaft is fixedly connected between the driving gear 6 and the middle part of the driven gear 7, and the central shaft is rotationally connected with an upper valve cover 3), a valve rod 8 is arranged on one side, far away from the driving gear 6, of the driven gear 7, a rack 10 engaged with the driven gear 7 is arranged on one side, close to the driven gear 7, of the valve rod 8, a valve plate 1 is fixedly connected after the lower end of the valve rod 8 is inserted into the valve body 2, when the piston 15 ascends, the lifting toothed plate 5 can be pushed upwards, when the lifting toothed plate 5 moves upwards, the driving gear 6 can rotate anticlockwise, the driven gear 7 is driven to rotate clockwise, the driven gear 7 rotates clockwise, the valve rod 8 can be driven to move upwards, and the valve plate 1 is driven to be opened;

referring to fig. 1 and 2, a first limiting plate 11 is fixedly connected to a side of the side plate 9, which is arranged at the upper end and is close to the lifting toothed plate 5, for limiting excessive upward movement of the piston rod 15;

referring to fig. 1, a second limiting plate 13 is mounted on the upper end of the valve rod 8, a guide rail 12 is mounted above the interior of the upper valve cover 3, the second limiting plate 13 slides in the guide rail 12, and a third limiting plate 14 is fixedly connected to the upper end of the lifting toothed plate 5.

The working principle and the using flow of the utility model are as follows: when the valve plate 1 needs to be opened, air enters through the air inlet and outlet holes 4, air in the air chamber 17 can push the piston 15 upwards, the spring 16 is stretched, the piston 15 pushes the lifting toothed plate 5 upwards, the lifting toothed plate 5 can enable the driving gear 6 to rotate anticlockwise, further the driven gear 7 is driven to rotate clockwise, the driven gear 7 can drive the valve rod 8 to move upwards, further the valve plate 1 is driven to be opened, when the valve plate 1 needs to be closed, the air inlet and outlet holes 4 are exhausted, high air pressure is lost in the air chamber 17, at the moment, the piston 15 loses thrust, the spring 16 rebounds to pull the piston 15 downwards, the piston 15 returns, the toothed plate 15 is driven to move downwards, further the whole valve rod 8 is driven to move downwards, the valve plate 1 is closed, and air is completely in the air chamber 17 in the whole opening and closing process, and the condition that air leaks into the valve body 1 cannot be generated.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a valve subassembly of pneumatic valve, includes valve body (2) and installs upper valve gap (3) in valve body (2) top, its characterized in that: side board (9) are installed to inside one side below of upper valve gap (3), sliding connection has piston (15) between one side of side board (9) and upper valve gap (3), establish to air chamber (17) below of piston (15), the internally mounted of air chamber (17) has spring (16), lift pinion rack (5) are installed to the top of piston (15), the one side meshing of lift pinion rack (5) has driving gear (6), the opposite side meshing of driving gear (6) has driven gear (7), one side that driven gear (7) kept away from driving gear (6) is equipped with valve rod (8), one side that valve rod (8) are close to driven gear (7) is equipped with rack (10) with driven gear (7) meshing, the rigid coupling has valve plate (1) behind the lower extreme of valve rod (8) inserts the inside of valve body (2).

2. A valve assembly for a pneumatic valve as set forth in claim 1 wherein: the middle parts of the driving gear (6) and the driven gear (7) are fixedly connected with a center shaft, and the center shaft is rotationally connected with the upper valve cover (3).

3. A valve assembly for a pneumatic valve as set forth in claim 1 wherein: and an air inlet and outlet hole (4) is formed in a position below one side of the upper valve cover (3) and corresponding to the air chamber (17).

4. A valve assembly for a pneumatic valve as set forth in claim 1 wherein: the side plate (9) is fixedly connected with a first limiting plate (11) at one side of the upper end, which is close to the lifting toothed plate (5).

5. A pneumatic valve assembly as set forth in claim 4 wherein: the upper end of the valve rod (8) is provided with a second limiting plate (13), a guide rail (12) is arranged above the interior of the upper valve cover (3), and the second limiting plate (13) slides in the guide rail (12).

6. A valve assembly for a pneumatic valve as set forth in claim 1 wherein: and a third limiting plate (14) is fixedly connected to the upper end of the lifting toothed plate (5).