A controllable air volume proportional servo valve

Abstract

The utility model discloses a controllable gas quantity proportion servo valve relates to valve technical field, and this device includes square valve body, both ends of square valve body all are installed with connecting barrel, and the one end of connecting barrel away from square valve body is installed with cylinder, and the lateral wall of cylinder away from connecting barrel one end is installed with the connecting flange, and the lateral wall of square valve body close to input is installed with the limiting frame, and the inner wall of limiting frame is sealed and is connected with valve plate of sliding, and the inside of square valve body of valve plate close to square valve body output one side is provided with protection mechanism, and when valve plate moves to the inside of square valve body, first rotary rod will drive swing board to swing upwards, and along with the smaller opening of valve plate, the angle of swing board swing is greater, and through the blade on swing board, second rotary rod and rotary damper, the direct impact of airflow is blocked to pipeline, and the noise and vibration of high -speed airflow caused by throttling effect are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a controllable air volume proportional servo valve. Background Technology

[0002] Valves are control components in fluid transport systems, serving functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, flow diversion, and pressure relief. Valves used in fluid control systems range from the simplest shut-off valves to the various valves used in highly complex automated control systems, exhibiting a wide variety of types and specifications.

[0003] Existing valves, such as the adjustable flow valve with announcement number CN222992214U, control the fluid velocity and impact force by blocking the fluid from directly impacting the pipeline. This effectively reduces the noise and vibration caused by high-speed fluid due to the throttling effect, and helps reduce the risk of mechanical fatigue and damage.

[0004] The aforementioned patent still has shortcomings. Because the arc-shaped plate is set around the rotating column, when the valve is fully open, the airflow will blow entirely onto the arc-shaped plate, which is prone to abnormal rotation, affecting the protection effect on the valve body and making it inconvenient for users to use.

[0005] To address the aforementioned issues, an improved controllable air volume proportional servo valve is now designed. Utility Model Content

[0006] The purpose of this invention is to provide a controllable air volume proportional servo valve to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A controllable air volume proportional servo valve includes a square valve body. Connecting cylinders are installed at both ends of the square valve body. A cylindrical cylinder is installed at the end of the connecting cylinder furthest from the square valve body. A connecting flange is installed on the side wall of the cylindrical cylinder furthest from the connecting cylinder. A limit frame is installed on the side wall of the square valve body near the input end. The limit frame is perpendicular to the square valve body and communicates with it. A valve plate for opening and closing the square valve body is slidably connected to the inner wall of the limit frame. A movable plate is installed at the end of the valve plate furthest from the square valve body, and a fixed plate is installed at the end of the movable plate furthest from the valve plate. An electric push rod is installed on the side wall of the square valve body near the limit frame. The output end of the electric push rod is installed on the fixed plate. A protective mechanism for protecting the valve body is provided inside the square valve body on the side of the valve plate near the output end of the square valve body.

[0009] As a further embodiment of this utility model: the protective mechanism includes a first rotating rod, which is horizontally disposed inside the square valve body on the side away from the limiting frame. The first rotating rod is perpendicular to the airflow direction inside the square valve body. The first rotating rod is disposed between the valve plate and the output end of the square valve body, and is close to the valve plate. The two ends of the first rotating rod are rotatably connected to the inner wall of the square valve body. A swing plate is installed on the side wall of both ends of the first rotating rod. The end of the swing plate away from the first rotating rod is close to the output end of the square valve body. A plurality of second rotating rods are rotatably connected between the two swing plates. A plurality of blades are installed in a circumferential array on the side wall of the second rotating rod between the two swing plates. A rotation damper is disposed at both ends of the second rotating rod through the swing plate. The second rotating rod is mounted on the rotation shaft of the rotation damper. The rotation damper is mounted on the side wall of the swing plate. A drive assembly for swinging the swing plate according to the opening degree of the valve plate to the square valve body is disposed on the side wall of the square valve body.

[0010] As a further embodiment of this utility model: the driving assembly includes a fixed frame, which is vertically mounted on the side wall of the square valve body. The end of the first rotating rod near the fixed frame passes through the side wall of the square valve body and is rotatably connected to the inner wall of the fixed frame. A fifth gear is installed on the side wall of the first rotating rod inside the fixed frame. The upper end of the fifth gear meshes with a fourth gear. The upper end of the fourth gear meshes with a third gear. The upper end of the third gear meshes with a second gear. The second gear meshes with a first gear on the side wall near the limiting frame. The center positions of the first gear, second gear, third gear, and fourth gear are all rotatably connected to the inner wall of the fixed frame via rotating shafts. The end of the first gear away from the second gear meshes with a rack. The rack is vertically arranged inside the fixed frame. A slide rod is installed on the upper end of the rack. The end of the slide rod away from the rack passes through the upper end of the fixed frame and is installed at the lower end of the fixed plate. The second gear, third gear, fourth gear, and fifth gear have the same diameter and number of teeth. The diameter of the first gear is smaller than the diameter of the fifth gear. The purpose is to make the swing plate swing slowly inside the square valve body during the downward movement of the rack.

[0011] As a further improvement of this utility model, the side wall of the square valve body is equipped with reinforcing support ribs to improve the structural strength of the square valve body.

[0012] As a further improvement of this utility model, a sealing gasket for sealing the valve plate is installed on the inner wall of the limiting frame.

[0013] As a further improvement of this utility model, the fixed plate is fixedly connected to the output end of the electric push rod and the moving plate by welding.

[0014] As a further improvement of this utility model, a blocking frame for limiting the position of the valve plate is installed on the inner wall of the square valve body on both sides of the valve plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention uses a high-precision electric push rod to move the valve plate, thereby controlling the amount of gas the valve plate extends into the square valve body.

[0017] As the valve plate moves into the square valve body, the first rotating rod drives the swing plate to swing upward. As the valve plate opening decreases, the swing angle of the swing plate increases. The blades on the swing plate, the second rotating rod, and the rotary damper prevent the airflow from directly impacting the pipeline, thus controlling the airflow speed and impact force. This effectively reduces the noise and vibration caused by the high-speed airflow due to the throttling effect, helps reduce the risk of mechanical fatigue and damage, extends the service life of the valve and pipeline system, and improves the stability of the pipeline connection and the safety of the entire airflow delivery system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the drive component in this utility model.

[0021] Figure 4 This is a schematic diagram of the protective mechanism in this utility model.

[0022] The components are: 1. Square valve body; 2. Connecting cylinder; 3. Cylindrical cylinder; 4. Connecting flange; 5. Blade; 6. Rotary damper; 7. Swing plate; 8. First rotating rod; 9. Blocking frame; 10. Valve plate; 11. Limiting frame; 12. Moving plate; 13. Fixed plate; 14. Electric push rod; 15. Fixed frame; 16. Slide rod; 17. Rack; 18. First gear; 19. Second gear; 20. Third gear; 21. Fourth gear; 22. Fifth gear; 23. Second rotating rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 In this embodiment of the present invention, a controllable air volume proportional servo valve includes a square valve body 1. Connecting cylinders 2 are installed at both ends of the square valve body 1. A cylindrical cylinder 3 is installed at the end of the connecting cylinder 2 away from the square valve body 1. A connecting flange 4 is installed on the side wall of the cylindrical cylinder 3 away from the connecting cylinder 2. A limiting frame 11 is installed on the side wall of the square valve body 1 near the input end. The limiting frame 11 is perpendicular to the square valve body 1, and the square valve body 1 and the limiting frame 11 are in communication. A sealing sliding connection for controlling the square valve body 1 is provided on the inner wall of the limiting frame 11. The valve plate 10 of the switch has a blocking frame 9 installed on the inner wall of the square valve body 1 on both sides of the valve plate 10 for limiting the valve plate 10. A movable plate 12 is installed at the end of the valve plate 10 away from the square valve body 1, and a fixed plate 13 is installed at the end of the movable plate 12 away from the valve plate 10. An electric push rod 14 is installed on the side wall of the square valve body 1 near the limiting frame 11. The output end of the electric push rod 14 is installed on the fixed plate 13. A protective mechanism for protecting the valve body is provided inside the square valve body 1 on the side of the valve plate 10 near the output end of the square valve body 1.

[0025] The protective mechanism includes a first rotating rod 8, which is horizontally positioned inside the square valve body 1 on the side away from the limiting frame 11. The first rotating rod 8 is perpendicular to the airflow direction inside the square valve body 1. The first rotating rod 8 is positioned between the valve plate 10 and the output end of the square valve body 1, and closer to the valve plate 10. Both ends of the first rotating rod 8 are rotatably connected to the inner wall of the square valve body 1. A swing plate 7 is installed on the side wall at both ends of the first rotating rod 8. The end of the swing plate 7 away from the first rotating rod 8 is close to the output end of the square valve body 1. At the outlet, a plurality of second rotating rods 23 are rotatably connected between the two swing plates 7. A plurality of blades 5 are installed in a circumferential array on the side wall of the second rotating rods 23 between the two swing plates 7. Rotation dampers 6 are provided at both ends of the second rotating rods 23 through the swing plates 7. The second rotating rods 23 are mounted on the rotation shaft of the rotation dampers 6. The rotation dampers 6 are mounted on the side wall of the swing plates 7. A drive assembly is provided on the side wall of the square valve body 1 to swing the swing plates 7 according to the opening degree of the square valve body 1 by the valve plate 10.

[0026] The drive assembly includes a fixed frame 15, which is vertically mounted on the side wall of the square valve body 1. One end of the first rotating rod 8 near the fixed frame 15 passes through the side wall of the square valve body 1 and is rotatably connected to the inner wall of the fixed frame 15. A fifth gear 22 is mounted on the side wall of the first rotating rod 8 inside the fixed frame 15. The upper end of the fifth gear 22 meshes with a fourth gear 21. The upper end of the fourth gear 21 meshes with a third gear 20. The upper end of the third gear 20 meshes with a second gear 19. The second gear 19 meshes with a first gear 18 on the side wall near the limiting frame 11. The first gear 18, the second gear 19, the third gear 20, and the fourth gear 21 mesh with the fifth gear 22. The center of each wheel 21 is rotatably connected to the inner wall of the fixed frame 15 via a rotating shaft. The end of the first gear 18 away from the second gear 19 is engaged with a rack 17. The rack 17 is vertically arranged inside the fixed frame 15. A slide rod 16 is installed on the upper end of the rack 17. The end of the slide rod 16 away from the rack 17 passes through the upper end of the fixed frame 15 and is installed on the lower end of the fixed plate 13. The second gear 19, the third gear 20, the fourth gear 21, and the fifth gear 22 have the same diameter and number of teeth. The diameter of the first gear 18 is smaller than the diameter of the fifth gear 22. The purpose is to make the swing plate 7 swing slowly inside the square valve body 1 during the downward movement of the rack 17.

[0027] When the fixed plate 13 moves, the fixed plate 13 drives the slide rod 16 to move, the slide rod 16 drives the rack 17 to move, the rack 17 drives the first gear 18 to rotate, the first gear 18 drives the second gear 19 to rotate, the second gear 19 drives the third gear 20 to rotate, the third gear 20 drives the fourth gear 21 to rotate, the fourth gear 21 drives the fifth gear 22 to rotate, the fifth gear 22 drives the first rotating rod 8 to rotate, the first rotating rod 8 drives the swing plate 7 to swing, and the swing plate 7 drives the second rotating rod 23 and the blade 5 to swing.

[0028] When the airflow passes through, the airflow drives the blade 5 to rotate, the blade 5 drives the second rotating rod 23 to rotate, and the second rotating rod 23 drives the rotary damper 6 to rotate, thereby providing resistance to the second rotating rod 23 and the blade 5 through the rotary damper 6.

[0029] Working principle of a controllable air volume proportional servo valve:

[0030] When adjusting the air volume, the electric push rod 14 is activated. The output end of the electric push rod 14 drives the fixed plate 13 to move. The fixed plate 13 drives the moving plate 12 to move. The moving plate 12 drives the valve plate 10 to move, so that the valve plate 10 enters the square valve body 1. Then, by controlling the insertion amount of the valve plate 10 inside the square valve body 1, the air volume inside the square valve body 1 is adjusted.

[0031] Simultaneously, as the fixed plate 13 moves, the fixed plate 13 drives the slide rod 16 to move, the slide rod 16 drives the rack 17 to move, the rack 17 drives the first gear 18 to rotate, the first gear 18 drives the second gear 19 to rotate, the second gear 19 drives the third gear 20 to rotate, the third gear 20 drives the fourth gear 21 to rotate, the fourth gear 21 drives the fifth gear 22 to rotate, the fifth gear 22 drives the first rotating rod 8 to rotate, the first rotating rod 8 drives the swing plate 7 to swing, and the swing plate 7 drives the second rotating rod 23 and the blade 5 to swing.

[0032] When the airflow passes through, the airflow drives the blade 5 to rotate, the blade 5 drives the second rotating rod 23 to rotate, and the second rotating rod 23 drives the rotary damper 6 to rotate, thereby providing resistance to the second rotating rod 23 and the blade 5 through the rotary damper 6.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A controllable air volume proportional servo valve, comprising a square valve body (1), wherein connecting cylinders (2) are installed at both ends of the square valve body (1), a cylindrical cylinder (3) is installed at the end of the connecting cylinder (2) away from the square valve body (1), a connecting flange (4) is installed on the side wall of the end of the cylindrical cylinder (3) away from the connecting cylinder (2), and a limiting frame (11) is installed on the side wall of the square valve body (1) near the input end, the limiting frame (11) being perpendicular to the square valve body (1), and the square valve body (1) and the limiting frame (11) being perpendicular to each other. The components are interconnected, and a valve plate (10) for opening and closing the square valve body (1) is slidably connected to the inner wall of the limiting frame (11). A movable plate (12) is installed at the end of the valve plate (10) away from the square valve body (1), and a fixed plate (13) is installed at the end of the movable plate (12) away from the valve plate (10). An electric push rod (14) is installed on the side wall of the square valve body (1) near the limiting frame (11), and the output end of the electric push rod (14) is installed on the fixed plate (13). The valve plate (10) is located on the side of the square valve body (1) near the output end of the square valve body (1). Inside the square valve body (1), there is a protective mechanism for protecting the valve body.

2. The controllable air volume proportional servo valve according to claim 1, characterized in that, The protective mechanism includes a first rotating rod (8), which is horizontally positioned inside the square valve body (1) on the side away from the limiting frame (11). The first rotating rod (8) is perpendicular to the airflow direction inside the square valve body (1). The first rotating rod (8) is positioned between the valve plate (10) and the output end of the square valve body (1), and closer to the valve plate (10). Both ends of the first rotating rod (8) are rotatably connected to the inner wall of the square valve body (1). A swing plate (7) is installed on the side wall of both ends of the first rotating rod (8). The end of the swing plate (7) away from the first rotating rod (8) is closer to the square valve body (1). At the output end, a number of second rotating rods (23) are rotatably connected between the two swing plates (7). A number of blades (5) are installed in a circular array on the side wall of the second rotating rods (23) between the two swing plates (7). Rotation dampers (6) are provided at both ends of the second rotating rods (23) through the swing plates (7). The second rotating rods (23) are mounted on the rotation shaft of the rotation dampers (6). The rotation dampers (6) are mounted on the side wall of the swing plates (7). A drive assembly is provided on the side wall of the square valve body (1) to swing the swing plates (7) according to the opening degree of the square valve body (1) by the valve plate (10).

3. The controllable air volume proportional servo valve according to claim 2, characterized in that, The drive assembly includes a fixed frame (15), which is vertically mounted on the side wall of the square valve body (1). One end of the first rotating rod (8) near the fixed frame (15) passes through the side wall of the square valve body (1) and is rotatably connected to the inner wall of the fixed frame (15). A fifth gear (22) is installed on the side wall of the first rotating rod (8) inside the fixed frame (15). The upper end of the fifth gear (22) meshes with a fourth gear (21). The upper end of the fourth gear (21) meshes with a third gear (20). The upper end of the third gear (20) meshes with a second gear (19). The second gear (19) meshes with a first gear (18) on the side wall near the limiting frame (11). The first gear (18), the second gear (19), the third gear (20), and the fourth gear... The center position of each wheel (21) is rotatably connected to the inner wall of the fixed frame (15) via a rotating shaft. The end of the first gear (18) away from the second gear (19) is meshed with a rack (17). The rack (17) is vertically arranged inside the fixed frame (15). A slide rod (16) is installed on the upper end of the rack (17). The end of the slide rod (16) away from the rack (17) passes through the upper end of the fixed frame (15) and is installed on the lower end of the fixed plate (13). The diameter and number of teeth of the second gear (19), the third gear (20), the fourth gear (21), and the fifth gear (22) are the same. The diameter of the first gear (18) is smaller than the diameter of the fifth gear (22). The purpose is to make the swing plate (7) swing slowly inside the square valve body (1) during the downward movement of the rack (17).

4. The controllable air volume proportional servo valve according to claim 1, characterized in that, The square valve body (1) is equipped with reinforcing support ribs on its side wall to improve the structural strength of the square valve body (1).

5. The controllable air volume proportional servo valve according to claim 1, characterized in that, A sealing gasket for sealing the valve plate (10) is installed on the inner wall of the limiting frame (11).

6. The controllable air volume proportional servo valve according to claim 1, characterized in that, The fixed plate (13) is fixedly connected to the output end of the electric push rod (14) and the moving plate (12) by welding.

7. A controllable air volume proportional servo valve according to claim 1, characterized in that, The inner walls of the square valve bodies (1) on both sides of the valve plate (10) are equipped with blocking frames (9) for limiting the valve plate (10).

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