CN112728171A

CN112728171A - Petroleum control valve with anti-backflow function

Info

Publication number: CN112728171A
Application number: CN202011552231.5A
Authority: CN
Inventors: 董旭
Original assignee: Jiangsu Kaiao Machinery Manufacturing Co ltd
Current assignee: Jiangsu Kaiao Machinery Manufacturing Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-04-30

Abstract

The invention discloses a petroleum control valve with an anti-backflow function, which comprises a control valve main body, wherein a liquid inlet cavity is formed in one end of the interior of the control valve main body, a liquid outlet cavity is formed in the other end of the interior of the control valve main body, a communicating cavity is formed in the middle of the top of the interior of the control valve main body, the liquid inlet cavity and the liquid outlet cavity are communicated with the communicating cavity, a flow control plug suitable for the communicating cavity is arranged on the inner side of the communicating cavity, an installation block is installed at the top of the control valve main body, and locking bolts are uniformly arranged at the edge of the installation block. The invention is provided with the flow control plug, the mounting block, the locking bolt and the pneumatic cylinder, and the pneumatic cylinder adjusts the flow and the opening and closing of the control valve by adjusting the position of the flow control plug, so that the convenience and the accuracy of the adjustment of the control valve are improved, the automatic opening and closing adjustment is convenient, and the mounting block is convenient to take down through the locking bolt to clean or repair the inside of the control valve.

Description

Petroleum control valve with anti-backflow function

Technical Field

The invention relates to the technical field of petroleum control valves, in particular to a petroleum control valve with a backflow prevention function.

Background

Valves are pipe fittings used for opening and closing pipelines, controlling flow direction, adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, and can be divided into shut-off valves, check valves, regulating valves and the like according to functions of the valves.

The traditional control valve is complex in flow adjustment, poor in backflow prevention effect, prone to liquid leakage during backflow prevention and affecting the sealing performance of the valve, and needs to be adjusted manually, so that the adjusting speed is low, the adjusting accuracy is poor, and the use limitation is poor.

Disclosure of Invention

The present invention has been made in an effort to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a petroleum control valve with a backflow prevention function.

In order to achieve the purpose, the invention provides the following technical scheme: a petroleum control valve with backflow prevention function comprises a control valve main body, wherein a liquid inlet cavity is formed in one end of the interior of the control valve main body, a liquid outlet cavity is formed in the other end of the interior of the control valve main body, a communicating cavity is formed in the middle position of the top of the interior of the control valve main body, the liquid inlet cavity and the liquid outlet cavity are communicated with the communicating cavity, a flow control plug which is suitable for the communicating cavity is arranged on the inner side of the communicating cavity, an installation block is installed at the top of the control valve main body, locking bolts are evenly arranged at the edge of the installation block, the installation block is fixed with the control valve main body through the locking bolts, a pneumatic cylinder is installed at the top of the interior of the installation block, the bottom end of the pneumatic cylinder is fixedly connected with the flow control plug, a first annular rubber seat is installed on the inner side wall of the liquid outlet cavity, and, the sliding block is evenly installed in the outside of first shutoff stopper, and the sliding block inboard all is provided with rather than the suitable spacing slide bar, the both ends of spacing slide bar are all fixed on the inside wall of going out the liquid cavity, go out the inboard position department that is close to spacing slide bar one end of liquid cavity and install second annular rubber seat, and second annular rubber seat inboard is provided with rather than the suitable second shutoff stopper, first shutoff stopper is close to one side that the second sealed the stopper and installs the connecting rod, and the other end and the second of connecting rod seal up looks fixed connection, flange is all installed at the both ends of control valve main part.

Preferably, the outer side wall of the control valve main body is uniformly provided with reinforcing ribs.

Preferably, the outer side wall of the flow control plug is uniformly provided with a rubber layer.

Preferably, the edge of the bottom of the mounting block is provided with an annular rubber pad.

Preferably, the first sealing plug and the second sealing plug are provided with rubber blocks at one sides close to the first annular rubber seat and the second annular rubber seat.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the arrangement of the flow control plug, the mounting block, the locking bolt and the pneumatic cylinder, the pneumatic cylinder adjusts the position of the flow control plug so as to adjust the flow and the opening and closing of the control valve, so that the convenience and the accuracy of the adjustment of the control valve are improved, the automatic opening and closing adjustment is facilitated, the mounting block is conveniently taken down through the locking bolt, and the inside of the control valve is cleaned or repaired;

2. according to the invention, through the arrangement of the first annular rubber seat, the first seal plug, the second annular rubber seat, the second seal plug and the connecting rod, the pressure generated by the oil flow is utilized, and the two groups of rubber seats are attached to and separated from the seal plug, so that the seal and open states are adjusted, the backflow is effectively avoided through a double backflow prevention mode, and the use of a control valve is prevented from being influenced due to liquid leakage;

3. according to the invention, through the arrangement of the sliding block and the limiting sliding rod, the stability of the transverse moving process of the first plugging plug and the second plugging plug is improved, the plugging treatment is effectively carried out during backflow, and the backflow is avoided, so that the use and the cleaning of the control valve are influenced. And the service life of the valve is prolonged.

Drawings

FIG. 1 is a schematic front cross-sectional view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged view of the structure at A of FIG. 1 according to the present invention.

In the figure: 1. a control valve body; 2. a liquid inlet cavity; 3. a liquid outlet cavity; 4. the cavity is communicated; 5. a flow control plug; 6. mounting blocks; 7. locking the bolt; 8. a pneumatic cylinder; 9. a first annular rubber seat; 10. a first plug; 11. a slider; 12. a limiting slide bar; 13. a second annular rubber seat; 14. a second plug; 15. a connecting rod; 16. and connecting the flanges.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, an embodiment of the present invention is shown: a petroleum control valve with backflow prevention function comprises a control valve main body 1, one end inside the control valve main body 1 is provided with a liquid inlet cavity 2, the other end inside the control valve main body 1 is provided with a liquid outlet cavity 3, a communication cavity 4 is arranged at the middle position of the top inside the control valve main body 1, the liquid inlet cavity 2 and the liquid outlet cavity 3 are communicated with the communication cavity 4, a flow control plug 5 suitable for the communication cavity 4 is arranged on the inner side of the communication cavity 4, an installation block 6 is installed at the top of the control valve main body 1, locking bolts 7 are evenly arranged at the edge of the installation block 6, the installation block 6 is fixed with the control valve main body 1 through the locking bolts 7, a pneumatic cylinder 8 is installed at the inner top of the installation block 6, the bottom end of the pneumatic cylinder 8 is fixedly connected with the flow control plug 5, automatic adjustment is achieved, manual adjustment is not needed, and not, the convenience is improved, a first annular rubber seat 9 is arranged on the inner side wall of the liquid outlet cavity 3, a first sealing plug 10 is arranged on one side, away from the flow control plug 5, of the first annular rubber seat 9, sliding blocks 11 are uniformly arranged on the outer side of the first sealing plug 10, limit sliding rods 12 which are matched with the sliding blocks 11 are arranged on the inner sides of the sliding blocks 11, two ends of each limit sliding rod 12 are fixed on the inner side wall of the liquid outlet cavity 3, a second annular rubber seat 13 is arranged on the inner side of the liquid outlet cavity 3, close to one end of each limit sliding rod 12, a second sealing plug 14 which is matched with the second annular rubber seat 13 is arranged on the inner side of the second annular rubber seat 13, one side of each second annular rubber seat 13 is of an inclined structure, the sealing performance of the second sealing plug 14 and the second annular rubber seat 13 is improved, the sealing performance is improved, backflow is effectively avoided, a connecting rod 15 is arranged on, and the other end of the connecting rod 15 is fixedly connected with the second sealing plug 14, and connecting flanges 16 are installed at both ends of the control valve main body 1.

In this implementation: the lateral wall of control valve main part 1 evenly is provided with the strengthening rib, improve the holistic intensity of control valve, thereby improve its bearing capacity and compressive capacity, avoid taking place the damage, flow control stopper 5's lateral wall evenly is provided with the rubber layer, the leakproofness of laminating is improved, take place the weeping when avoiding laminating, the edge of installation piece 6 bottom all is provided with annular rubber pad, stability and leakproofness when improving the laminating, avoid taking place the weeping, one side that first shutoff stopper 10 and second shutoff stopper 14 are close to first annular rubber seat 9 and second annular rubber seat 13 all is provided with the rubber piece, laminating department carries out the suitability deformation, thereby the leakproofness of backflow structure has been improved, weeping and backward flow are avoided taking place.

The working principle is as follows: the device is powered on (electrical components are used by the device and are all powered by an external power supply), pipelines for entering and exiting oil are connected to two ends of a control valve main body 1 and are fixed through a connecting flange 16, a pneumatic cylinder 8 is controlled to stretch and retract and drive a flow control plug 5 to lift, the position relation of the flow control plug 5 and one end of a liquid outlet cavity 3 is adjusted, so that the flow is adjusted, the valve opening and closing adjustment is carried out, when the oil circulates through a liquid inlet cavity 2, a communication cavity 4 and the liquid outlet cavity 3, a first seal plug 10 is pushed to transversely move, a second seal plug 14 is pushed to simultaneously transversely move through a connecting rod 15, the position relation of the first seal plug 10 and a first annular rubber seat 9 is adjusted, the position relation of the second seal plug 14 and a second annular rubber seat 13 is adjusted, so that through flow is formed, when backflow occurs, the first seal plug 10 is pushed to tightly abut against one side, meanwhile, the second sealing plug 14 is pushed to abut against one side of the second annular rubber seat 13, when backflow occurs, the sealing plug is closed, and the sliding block 11 slides transversely on the outer side of the limit sliding rod 12 while adjustment is performed.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a petroleum control valve with anti-return function, includes control valve main part (1), its characterized in that: the liquid inlet cavity (2) is formed in one end of the interior of the control valve body (1), the liquid outlet cavity (3) is formed in the other end of the interior of the control valve body (1), the communication cavity (4) is formed in the middle position of the top of the interior of the control valve body (1), the liquid inlet cavity (2) and the liquid outlet cavity (3) are communicated with the communication cavity (4), the flow control plug (5) suitable for the liquid inlet cavity is arranged on the inner side of the communication cavity (4), the installation block (6) is installed at the top of the control valve body (1), locking bolts (7) are evenly arranged at the edge of the installation block (6), the installation block (6) is fixed with the control valve body (1) through the locking bolts (7), a pneumatic cylinder (8) is installed at the top of the installation block (6), and the bottom end of the pneumatic cylinder (8) is fixedly connected with the flow control plug (5, a first annular rubber seat (9) is installed on the inner side wall of the liquid outlet cavity (3), a first sealing plug (10) is arranged on one side, far away from the flow control plug (5), of the first annular rubber seat (9), sliding blocks (11) are evenly installed on the outer side of the first sealing plug (10), limit sliding rods (12) which are suitable for the sliding blocks are arranged on the inner sides of the sliding blocks (11), two ends of each limit sliding rod (12) are fixed on the inner side wall of the liquid outlet cavity (3), a second annular rubber seat (13) is installed at a position, close to one end of each limit sliding rod (12), of the inner side of the liquid outlet cavity (3), a second sealing plug (14) which is suitable for the second annular rubber seat is arranged on the inner side of the second annular rubber seat (13), a connecting rod (15) is installed on one side, close to the second sealing plug (14), of the first sealing plug (10), and the other end of the connecting rod (15), and connecting flanges (16) are arranged at two ends of the control valve main body (1).

2. A petroleum control valve with a backflow prevention function as claimed in claim 1, wherein: the outer side wall of the control valve main body (1) is uniformly provided with reinforcing ribs.

3. A petroleum control valve with a backflow prevention function as claimed in claim 1, wherein: the outer side wall of the flow control plug (5) is uniformly provided with a rubber layer.

4. A petroleum control valve with a backflow prevention function as claimed in claim 1, wherein: the edge of the bottom of the mounting block (6) is provided with an annular rubber pad.

5. A petroleum control valve with a backflow prevention function as claimed in claim 1, wherein: and rubber blocks are arranged on one sides of the first seal plug (10) and the second seal plug (14) close to the first annular rubber seat (9) and the second annular rubber seat (13).