CN214331520U

CN214331520U - Pneumatic regulating valve with backflow prevention structure

Info

Publication number: CN214331520U
Application number: CN202120382990.5U
Authority: CN
Inventors: 赵荣娟
Original assignee: Hangzhou Fuyang Lianggong Instrument Co ltd
Current assignee: Hangzhou Fuyang Lianggong Instrument Co ltd
Priority date: 2021-02-21
Filing date: 2021-02-21
Publication date: 2021-10-01
Anticipated expiration: 2031-02-21

Abstract

The utility model discloses a pneumatic control valve with anti-return structure, including governing valve main part and spring pivot, the outside of governing valve main part is equipped with the protective sheath, and one side of governing valve main part is connected with the inlet pipe, one side of inlet pipe is connected with the inlet connecting plate, and is equipped with the sealing washer on the inlet connecting plate, the internally mounted of inlet pipe has the filter core, the opposite side of governing valve main part is connected with the outlet pipe, and is equipped with the installation screw on the outlet pipe, the spring pivot is installed in the inside of outlet pipe, and one side of spring pivot is connected with prevents the kickback. The utility model discloses the outer wall size that is provided with the sealing washer is the same with the outer wall size of import connecting plate, like this when the export of import connecting plate and other equipment carries out fixed connection, can make its contact surface between them laminate more through the sealing washer to reach sealed effect, prevent to take place the phenomenon of leaking with this.

Description

Pneumatic regulating valve with backflow prevention structure

Technical Field

The utility model relates to a pneumatic control valve technical field specifically is a pneumatic control valve with backflow prevention structure.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

The existing pneumatic control valve has the problems that backflow cannot be prevented, the inside of the valve is easily corroded, and the connection point is easily leaked.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic control valve with backflow prevention structure to it has the problem that can not prevent the backward flow to put forward current pneumatic control valve in solving above-mentioned background art, and the valve is inside to be corroded the problem easily, and the problem of seepage takes place easily in the tie point.

In order to achieve the above object, the utility model provides a following technical scheme: a pneumatic regulating valve with a backflow prevention structure comprises a regulating valve main body and a spring rotating shaft, wherein a protective sleeve is arranged outside the regulating valve main body, and one side of the regulating valve main body is connected with an inlet pipeline, one side of the inlet pipeline is connected with an inlet connecting plate, a sealing ring is arranged on the inlet connecting plate, a filter element is arranged in the inlet pipeline, the other side of the regulating valve main body is connected with an outlet pipeline, and the outlet pipeline is provided with a mounting screw, the spring rotating shaft is mounted inside the outlet pipeline, one side of the spring rotating shaft is connected with a reverse baffle, the regulating valve main body is provided with a pneumatic cylinder, and a piston rod is fixed in the pneumatic cylinder, one side of the piston rod is provided with a blocking piston, and a sealing sleeve is arranged on the blocking piston, a clamping groove is arranged on one side of the blocking piston, and an anti-corrosion layer is arranged on the inner side of the regulating valve main body.

Preferably, be adhesive bonding between import connecting plate and the sealing washer, and be welded connection between import connecting plate and the import pipeline to the outer wall size of sealing washer is the same with the outer wall size of import connecting plate.

Preferably, the filter element is movably connected with the inside of the inlet pipeline, and the inlet pipeline and the outlet pipeline are symmetrical with each other about the central line of the regulating valve main body.

Preferably, block for adhesive connection between piston and the seal cover, and be closely laminating between the inner wall of seal cover and draw-in groove to block for swing joint between piston and the draw-in groove.

Preferably, the anti-reverse plate is movably connected with the inner wall of the outlet pipeline through the spring rotating shaft, and the anti-reverse plate is matched with the outlet pipeline.

Preferably, the anticorrosive coating is along the inner wall evenly distributed of governing valve main part, and is adhesive connection between the anticorrosive coating and the inner wall of governing valve main part.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses the outer wall size that is provided with the sealing washer is the same with the outer wall size of import connecting plate, like this when the export of import connecting plate and other equipment carries out fixed connection, can make its contact surface between them laminate more through the sealing washer, thereby reach sealed effect, prevent the phenomenon that leaks from taking place with this, be swing joint between the inside of filter core and import pipeline, can carry out simple filtration to the liquid or gas that gets into the inside of device through filtering the core like this, prevent that impurity from getting into the inside of device, thereby cause the phenomenon of valve jam, and can change the filter core regularly, thereby guarantee its filter effect;

2. the utility model discloses be closely laminating between the inner wall that is provided with seal cover and draw-in groove, like this when blocking the piston and move down to the draw-in groove inside, can make the valve close, and through the close laminating between seal cover and the draw-in groove inner wall, can prevent the phenomenon that takes place to leak, prevent that the baffle is swing joint through between the inner wall of spring shaft and outlet duct, like this when there is not gas or liquid to preventing the baffle to assault, the spring shaft just can rebound the baffle to the original position, make the outlet duct seal up, thereby prevent the phenomenon that liquid or gas from taking place to flow back;

3. the utility model discloses be provided with the anticorrosive coating along the inner wall evenly distributed of governing valve main part, can prevent that the inner wall of governing valve main part from receiving the corruption through the anticorrosive coating like this to this can increase the clean effect of the inner wall of governing valve main part, can also guarantee the life of governing valve main part.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall internal structure of the present invention;

fig. 3 is a schematic view of a part of an enlarged structure at a in fig. 2 according to the present invention.

In the figure: 1. a regulator valve body; 2. a protective sleeve; 3. an inlet duct; 4. an inlet connection plate; 5. a seal ring; 6. an outlet conduit; 7. mounting screws; 8. a card slot; 9. a pneumatic cylinder; 10. a filter element; 11. an anticorrosive layer; 12. a piston rod; 13. blocking the piston; 14. sealing sleeves; 15. a reverse blocking prevention plate; 16. and a spring rotating shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a pneumatic regulating valve with a backflow prevention structure comprises a regulating valve main body 1 and a spring rotating shaft 16, a protective sleeve 2 is arranged outside the regulating valve main body 1, an inlet pipeline 3 is connected to one side of the regulating valve main body 1, an inlet connecting plate 4 is connected to one side of the inlet pipeline 3, a sealing ring 5 is arranged on the inlet connecting plate 4, a filter element 10 is arranged inside the inlet pipeline 3, an outlet pipeline 6 is connected to the other side of the regulating valve main body 1, a mounting screw 7 is arranged on the outlet pipeline 6, the spring rotating shaft 16 is mounted inside the outlet pipeline 6, a reverse baffle 15 is connected to one side of the spring rotating shaft 16, a pneumatic pressure cylinder 9 is arranged on the regulating valve main body 1, a piston rod 12 is fixed inside the pneumatic pressure cylinder 9, a blocking piston 13 is mounted on one side of the piston rod 12, a sealing sleeve 14 is arranged on the blocking piston 13, a clamping groove 8 is arranged on one side of the blocking piston 13, the inner side of the regulating valve main body 1 is provided with an anticorrosive coating 11.

The utility model discloses in: the inlet connecting plate 4 is in adhesive connection with the sealing ring 5, the inlet connecting plate 4 is in welded connection with the inlet pipeline 3, and the size of the outer wall of the sealing ring 5 is the same as that of the outer wall of the inlet connecting plate 4; like this when the export of import connecting plate 4 and other equipment carries out fixed connection, can make its contact surface between them laminate more through sealing washer 5 to reach sealed effect, with this phenomenon of preventing to leak.

The utility model discloses in: the filter element 10 is movably connected with the inside of the inlet pipeline 3, and the inlet pipeline 3 and the outlet pipeline 6 are mutually symmetrical about the central line of the regulating valve main body 1; can carry out simple filtration to the inside liquid or the gas of access to equipment through crossing filter core 10 like this, prevent that impurity from entering into inside the device to cause the phenomenon of valve jam, and can regularly change filter core 10, thereby guarantee its filter effect.

The utility model discloses in: the blocking piston 13 is in adhesive connection with the sealing sleeve 14, the sealing sleeve 14 is tightly attached to the inner wall of the clamping groove 8, and the blocking piston 13 is movably connected with the clamping groove 8; therefore, when the blocking piston 13 moves downwards to the inside of the clamping groove 8, the valve can be closed, and the phenomenon of leakage can be prevented through close fit between the sealing sleeve 14 and the inner wall of the clamping groove 8.

The utility model discloses in: the anti-reverse plate 15 is movably connected with the inner wall of the outlet pipeline 6 through a spring rotating shaft 16, and the anti-reverse plate 15 is matched with the outlet pipeline 6; thus, when no gas or liquid impacts the anti-reflection plate 15, the spring rotating shaft 16 can rebound the anti-reflection plate 15 to the original position, so that the outlet pipeline 6 is sealed, and the phenomenon of liquid or gas backflow is prevented.

The utility model discloses in: the anticorrosive coating 11 is uniformly distributed along the inner wall of the regulating valve main body 1, and the anticorrosive coating 11 is in adhesive connection with the inner wall of the regulating valve main body 1; can prevent through anticorrosive coating 11 that the inner wall of governing valve main part 1 from receiving the corruption like this to the clean effect of the inner wall of governing valve main part 1 can be increased to this, governing valve main part 1's life can also be guaranteed.

The working principle of the pneumatic regulating valve with the backflow preventing structure is as follows: firstly, the inlet pipeline 3 is fixedly connected with the outlet end of other equipment through the inlet connecting plate 4 so as to ensure the circulation of liquid or gas, and the inlet connecting plate 4 and the outlet end of other equipment are sealed through the sealing ring 5 so as to prevent the liquid or gas from leaking, and the outlet pipeline 6 is connected with the inlet end of other equipment through the mounting screw 7, secondly, the working of the pneumatic cylinder 9 drives the piston rod 12 to move up and down, the up and down movement of the piston rod 12 drives the blocking piston 13 to move up and down, when the blocking piston 13 moves up, the regulating valve main body 1 achieves the circulation effect, when the blocking piston 13 moves down, the regulating valve main body 1 achieves the closing effect through the sealing sleeve 14 and the clamping groove 8, and then the gas or liquid flowing out of the device can be prevented from flowing back to the inside of the device through the spring rotating shaft 16 and the anti-reflection plate 15, and prevent that the inner wall of governing valve main part 1 from receiving the corruption through anticorrosive coating 11, protect the outside of governing valve main part 1 through protective sheath 2 at last to can increase the life of device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pneumatic control valve with backflow prevention structure, includes governing valve main part (1) and spring pivot (16), its characterized in that: the outer portion of the adjusting valve main body (1) is provided with a protective sleeve (2), one side of the adjusting valve main body (1) is connected with an inlet pipeline (3), one side of the inlet pipeline (3) is connected with an inlet connecting plate (4), a sealing ring (5) is arranged on the inlet connecting plate (4), a filter element (10) is arranged inside the inlet pipeline (3), the other side of the adjusting valve main body (1) is connected with an outlet pipeline (6), an installation screw (7) is arranged on the outlet pipeline (6), a spring rotating shaft (16) is installed inside the outlet pipeline (6), one side of the spring rotating shaft (16) is connected with an anti-reverse plate (15), a pneumatic pressure cylinder (9) is arranged on the adjusting valve main body (1), a piston rod (12) is fixed inside the pneumatic pressure cylinder (9), a blocking piston (13) is installed on one side of the piston rod (12), and a sealing sleeve (14) is arranged on the blocking piston (13), a clamping groove (8) is arranged on one side of the blocking piston (13), and an anti-corrosion layer (11) is arranged on the inner side of the adjusting valve main body (1).

2. A pneumatic regulator valve having a backflow prevention structure in accordance with claim 1, wherein: be adhesive bonding between import connecting plate (4) and sealing washer (5), and be welded connection between import connecting plate (4) and inlet pipe (3) to the outer wall size of sealing washer (5) is the same with the outer wall size of import connecting plate (4).

3. A pneumatic regulator valve having a backflow prevention structure in accordance with claim 1, wherein: the filter element (10) is movably connected with the inside of the inlet pipeline (3), and the inlet pipeline (3) and the outlet pipeline (6) are symmetrical with each other about the central line of the regulating valve main body (1).

4. A pneumatic regulator valve having a backflow prevention structure in accordance with claim 1, wherein: blocking and being adhesive connection between piston (13) and seal cover (14), and be closely laminating between the inner wall of seal cover (14) and draw-in groove (8) to block and be swing joint between piston (13) and draw-in groove (8).

5. A pneumatic regulator valve having a backflow prevention structure in accordance with claim 1, wherein: the anti-reverse plate (15) is movably connected with the inner wall of the outlet pipeline (6) through the spring rotating shaft (16), and the anti-reverse plate (15) is matched with the outlet pipeline (6).

6. A pneumatic regulator valve having a backflow prevention structure in accordance with claim 1, wherein: anticorrosive coating (11) are along the inner wall evenly distributed of governing valve main part (1), and are adhesive connection between the inner wall of anticorrosive coating (11) and governing valve main part (1).