Pneumatic control valve with self-cleaning function

Abstract

The utility model relates to the field of pneumatic control valves, and particularly discloses a self-cleaning pneumatic control valve which comprises a valve body, a pneumatic execution component and a valve block. The pneumatic execution component is arranged at the top of the valve body, a water inlet is formed in one side of the valve body, a water outlet is formed in the other side of the valve body, flanges are arranged on the water inlet and the water outlet, a valve bottom pipe is arranged at the bottom of the valve body, a valve top pipe is arranged at the top of the valve body, and an opening is formed in the bottom of the valve bottom pipe. A bottom screw cap is arranged at the bottom of the valve bottom pipe, the valve block is arranged in the valve top pipe, a scraper is arranged at the bottom of the valve block, a connecting rod is arranged at the top of the valve block, a pipe top plate is arranged at the top of the valve body, a top groove is formed in the pipe top plate, and the connecting rod penetrates through the top groove to be connected with a pneumatic execution component. According to the pneumatic control valve with the self-cleaning function, self-cleaning of the interior of the control valve is achieved, and impurities are discharged through the bottom cover plate.

Description

Technical Field

[0001] The utility model relates to the field of pneumatic regulating valves, in particular to a pneumatic regulating valve with self-cleaning function. Background Art

[0002] Control valves occupy an indispensable position in modern chemical automatic control, and there are many types of control valve products, which play a role in various occasions. Among them, electric control valves, pneumatic control valves, and self-operated control valves are more common.

[0003] After the existing regulating valve has been used for a long time, impurities will adhere to the inside of the regulating valve, which makes it very troublesome to clean the inside of the regulating valve. Therefore, a pneumatic regulating valve with self-cleaning function is proposed. Utility Model Content

[0004] The purpose of the present utility model is to provide a pneumatic regulating valve with self-cleaning function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a pneumatic regulating valve with self-cleaning function, comprising a valve body, a pneumatic actuator, and a valve block; the pneumatic actuator is arranged at the top of the valve body, a water inlet is arranged on one side of the valve body, a water outlet is arranged on the other side of the valve body, flanges are arranged on the water inlet and the water outlet, a valve bottom pipe is arranged at the bottom of the valve body, a valve top pipe is arranged at the top of the valve body, an opening is arranged at the bottom of the valve bottom pipe, a bottom screw cover is arranged at the bottom of the valve bottom pipe, the valve block is arranged inside the valve top pipe, a connecting rod is arranged on the top of the valve block, a tube top plate is arranged on the top of the valve body, a top groove is arranged on the tube top plate, and the connecting rod passes through the top groove to connect to the pneumatic actuator.

[0006] Preferably, a tube wall slide groove is provided inside the valve body, the bottom of the tube wall slide groove is provided at the bottom of the valve bottom tube, the top of the tube wall slide groove is provided in the valve top tube, the top of the valve top tube is provided with a tube top wall, and the bottom of the tube top wall is connected to the top of the tube wall slide groove.

[0007] Preferably, the valve block is provided with a side sliding rod, and the side sliding rod is arranged inside the tube wall sliding groove, and the valve block slides up and down in the tube wall sliding groove through the side sliding rod.

[0008] Preferably, a scraper is provided on the bottom of the valve block, and a protrusion consistent with the side sliding rod structure is provided on the scraper. The scraper is made of stainless steel as a whole, and the scraper can scrape off and remove impurities attached to the valve top tube and the tube wall slide groove.

[0009] Preferably, an air pump tube is provided on the pneumatic actuator.

[0010] Preferably, a pipe thread is provided on the bottom of the valve bottom tube, and a cover thread is provided inside the bottom screw cover, and the bottom screw cover is screwed into the bottom of the valve bottom tube through the pipe thread and the cover thread.

[0011] Preferably, a cover gasket is provided on the bottom of the bottom screw cover, and the cover gasket is made of rubber material and serves to seal the bottom screw cover and the bottom opening of the valve bottom tube.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the valve block is driven to move by the pneumatic actuator, and the valve block slides inside the pipe wall groove through the side sliding rod to limit the position of the valve block; the impurities on the inner wall of the valve body are scraped off by the scraper; the valve bottom pipe is provided to facilitate the scraping of impurities entering and isolate the water pipes on both sides of the valve body, and the impurities are easily discharged by opening the bottom screw cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the valve body of the present utility model;

[0015] Figure 3 This is a schematic diagram of the inner wall structure of the valve body pipeline of the utility model;

[0016] Figure 4 This is a schematic diagram of the valve block structure of the utility model;

[0017] Numbers in the figure: 1. Valve body; 11. Water inlet; 12. Water outlet; 13. Flange; 14. Valve bottom pipe; 141. Pipe thread; 15. Pipe wall slide groove; 16. Pipe top wall; 17. Pipe top plate; 171. Top groove; 2. Pneumatic actuator; 21. Air pump pipe; 3. Bottom screw cover; 31. Cover thread; 32. Cover gasket; 4. Valve block; 41. Connecting rod; 42. Scraper; 43. Side sliding rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It is obvious that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] See also Figure 1-4 The utility model provides a technical solution: a pneumatic regulating valve with self-cleaning, comprising a valve body 1, a pneumatic actuator 2, and a valve block 4; the pneumatic actuator 2 is arranged at the top of the valve body 1, a water inlet 11 is arranged on one side of the valve body 1, and a water outlet 12 is arranged on the other side of the valve body 1, a flange 13 is provided on the water inlet 11 and the water outlet 12, a valve bottom pipe 14 is provided at the bottom of the valve body 1, a valve top pipe is provided on the top of the valve body 1, an opening is provided at the bottom of the valve bottom pipe 14, a bottom screw cover 3 is provided at the bottom of the valve bottom pipe 14, the valve block 4 is arranged inside the valve top pipe, a connecting rod 41 is provided on the top of the valve block 4, a pipe top plate 17 is provided on the top of the valve body 1, a top groove 171 is provided on the pipe top plate 17, and the connecting rod 41 passes through the top groove 171 to connect to the pneumatic actuator 2.

[0022] Furthermore, a tube wall slide groove 15 is provided inside the valve body 1, the bottom of the tube wall slide groove 15 is provided at the bottom of the valve bottom tube 14, the top of the tube wall slide groove 15 is provided in the valve top tube, and a tube top wall 16 is provided on the top of the valve top tube, and the bottom of the tube top wall 16 is connected to the top of the tube wall slide groove 15.

[0023] Furthermore, the valve block 4 is provided with a side sliding rod 43 , which is arranged inside the pipe wall sliding groove 15 . The valve block 4 slides up and down in the pipe wall sliding groove 15 via the side sliding rod 43 .

[0024] Furthermore, a scraper 42 is provided on the bottom of the valve block 4, and a protrusion with the same structure as the side sliding rod 43 is provided on the scraper 42. The scraper 42 is made of stainless steel as a whole. The scraper 42 can scrape off and remove impurities attached to the valve top tube and the pipe wall slide groove 15.

[0025] Furthermore, an air pump tube 21 is provided on the pneumatic actuator 2 .

[0026] Furthermore, a pipe thread 141 is provided on the bottom of the valve bottom tube 14 , and a cover thread 31 is provided inside the bottom screw cover 3 , and the bottom screw cover 3 is screwed into the bottom of the valve bottom tube 14 through the pipe thread 141 and the cover thread 31 .

[0027] Furthermore, a cover gasket 32 is provided on the bottom of the bottom screw cover 3 . The cover gasket 32 is made of rubber material and serves to seal the bottom screw cover 3 and the bottom opening of the valve bottom tube 14 .

[0028] Working principle: The connecting rod 41 at the bottom of the pneumatic actuator 2 controls the valve block 4 to move up and down inside the pipe wall groove 15, thereby realizing the switching of the valve body 1, and the valve block 4 moves to the valve bottom tube 14 to realize the pipe wall of the valve body 1. The pipe wall groove 15 limits the movement trajectory of the valve block 4 and strengthens the connection between the valve block 4 and the inner wall of the valve body 1 to reduce water seepage; the bottom of the valve body 1 can be opened by setting a rotating bottom screw cover 3. When the bottom of the valve block 4 moves to the inside of the valve bottom tube 14, the impurities on the inner wall of the valve body 1 are scraped off by the scraper 42, and the valve bottom tube 14 is opened by the bottom screw cover 3 to discharge the impurities.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic control valve with self-cleaning function, characterized in that: The invention comprises a valve body (1), a pneumatic actuator (2), and a valve block (4); the pneumatic actuator (2) is arranged on the top of the valve body (1); a water inlet (11) is arranged on one side of the valve body (1); a water outlet (12) is arranged on the other side of the valve body (1); flanges (13) are arranged on the water inlet (11) and the water outlet (12); a valve bottom pipe (14) is arranged on the bottom of the valve body (1); a valve top pipe is arranged on the top of the valve body (1); an opening is arranged at the bottom of the valve bottom pipe (14); a bottom screw cover (3) is arranged at the bottom of the valve bottom pipe (14); the valve block (4) is arranged inside the valve top pipe; a connecting rod (41) is arranged on the top of the valve block (4); a pipe top plate (17) is arranged on the top of the valve body (1); a top groove (171) is arranged on the pipe top plate (17); the connecting rod (41) passes through the top groove (171) to connect with the pneumatic actuator (2).

2. The self-cleaning pneumatic regulating valve according to claim 1, characterized in that: A tube wall chute (15) is provided inside the valve body (1), the bottom of the tube wall chute (15) is provided at the bottom of the valve bottom tube (14), the top of the tube wall chute (15) is provided in the valve top tube, the top of the valve top tube is provided with a tube top wall (16), and the bottom of the tube top wall (16) is connected to the top of the tube wall chute (15).

3. The pneumatic control valve with self-cleaning function according to claim 2, characterized in that: The valve block (4) is provided with a side sliding rod (43), and the side sliding rod (43) is arranged inside the tube wall sliding groove (15).

4. The self-cleaning pneumatic regulating valve according to claim 3, characterized in that: A scraper (42) is provided on the bottom of the valve block (4), and a protrusion having the same structure as the side sliding rod (43) is provided on the scraper (42). The scraper (42) is entirely made of stainless steel.

5. The pneumatic regulating valve with self-cleaning function according to claim 1, characterized in that: An air pump pipe (21) is provided on the pneumatic actuator (2).

6. The pneumatic regulating valve with self-cleaning function according to claim 1, characterized in that: The bottom of the valve bottom tube (14) is provided with a pipe thread (141), and the inside of the bottom screw cover (3) is provided with a cover thread (31).

7. The pneumatic regulating valve with self-cleaning function according to claim 1, characterized in that: A cover pad (32) is provided on the inner bottom of the bottom screw cover (3).

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