Vacuum ejector pin valve

Abstract

The utility model belongs to the technical field of vacuum thimble valves, and particularly relates to a vacuum thimble valve which comprises a valve body, the bottom of the valve body is fixedly communicated with a liquid outlet pipe, the upper surface of the valve body is fixedly communicated with a liquid inlet pipe, the right side of the valve body is fixedly communicated with a vacuum pipe, and a first air hole is formed in the surface of the valve body. An upper partition plate is fixedly connected to the inner wall of the valve body, a lower partition plate is fixedly connected to the inner wall of the valve body, first cylinders are arranged on the inner wall of the upper partition plate and the inner wall of the lower partition plate in an attached mode, and a columnar ejector pin is arranged on the inner wall of the valve body in an attached mode. According to the vacuum ejector pin valve, through cooperation of the U-shaped plate, the hand-screwing bolt and the threaded barrel, a user can rotate the hand-screwing bolt to adjust the thrust of the spring to the steel ball, meanwhile, the thrust of the spring to the steel ball is adjusted, the resistance borne by the columnar ejector pin during upward movement can be changed, and then the vacuum ejector pin valve can be suitable for different use scenes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vacuum needle valve technical field, concretely relates to a vacuum needle valve. BACKGROUND

[0002] The needle valve is a kind of valve with wide application, its structure includes valve body, needle, valve seat, spring and driving device, and driving mode has pneumatic, electric, manual division.Currently, the vacuum needle valve on market is usually connected with vacuum pump when using, then, the pressure difference generated by vacuum pump work makes needle move, and the opening and closing of vacuum needle valve are controlled by moving needle, but the vacuum needle valve is difficult to adapt to the diversification demand of needle action sensitivity and sealing performance under different working conditions due to the relatively fixed resistance when needle moves in the process of using. SUMMARY

[0003] The utility model discloses a kind of vacuum needle valves, solve the current, the vacuum needle valve in the process of using, due to the relatively fixed resistance when needle moves, it is difficult to adapt to the diversification demand of needle action sensitivity and sealing performance under different working conditions.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] Vacuum needle valve, including valve body, the bottom of the valve body is fixedly connected with liquid outlet pipe, the upper surface of the valve body is fixedly connected with liquid inlet pipe, the right side of the valve body is fixedly connected with vacuum pipe, the surface of the valve body is equipped with first air hole, the inner wall of the valve body is fixedly connected with upper partition plate, the inner wall of the valve body is fixedly connected with lower partition plate, the inner wall of the upper partition plate and the inner wall of lower partition plate are uniformly provided with first cylinder, the inner wall of the valve body is uniformly provided with cylindrical needle, the surface of the cylindrical needle and the inner wall of first cylinder are fixedly connected with connecting column, the surface of first cylinder is fixedly connected with sliding block, the surface of sliding block is attached with the inner wall of valve body, the surface of sliding block is equipped with annular groove, the left side of the valve body is equipped with through hole, the left side of the valve body is fixedly connected with second cylinder, the inner wall of second cylinder and the inner wall of annular groove are uniformly provided with steel ball, the left side of steel ball is fixedly connected with spring, the left side of spring and the inner wall of second cylinder are uniformly provided with hand screw bolt, the surface of hand screw bolt is threadedly connected with threaded cylinder, the surface of threaded cylinder and the left side of valve body are fixedly connected with U-shaped plate, the surface of second cylinder is equipped with second air hole.

[0006] The utility model is further provided as, first air hole is located above lower partition plate, sliding block is located above first air hole, vacuum pipe is located above sliding block, upper partition plate is located above vacuum pipe.

[0007] The present invention is further configured such that a limiting ring is fixedly connected to the inner wall of the valve body, and the limiting ring is located between the slider and the vacuum tube.

[0008] The present invention is further configured such that: annular scales are fitted to the upper and lower sides of the inner wall of the U-shaped plate; a toothed ring is fixedly connected to the inner wall of the annular scale; baffles are fitted to the left and right sides of the toothed ring; the bottom of the baffles is fixedly connected to the inner wall of the U-shaped plate; a gear is fixedly connected to the surface of the hand-tightening bolt; the gear meshes with the toothed ring; an arc-shaped plate is fitted to the inner wall of the toothed ring; the left and right sides of the arc-shaped plate are fixedly connected to the sides of the baffles; an observation hole is provided on the upper surface of the U-shaped plate; and an indicator block is fixedly connected to the upper surface of the U-shaped plate.

[0009] The present invention is further configured such that the observation hole is located above the annular scale, and the indicator block is located to the right of the observation hole.

[0010] The present invention is further configured such that the axis of the spring is on the same horizontal line as the center of the steel ball, and the elastic force of the spring is greater than the weight of the steel ball.

[0011] The technical effects achieved by this utility model are as follows:

[0012] This utility model discloses a vacuum ejector valve. Through the cooperation of a U-shaped plate, a hand-tightening bolt, and a threaded cylinder, the user can adjust the spring's thrust on the steel ball by turning the hand-tightening bolt. At the same time, by adjusting the spring's thrust on the steel ball, the resistance encountered by the cylindrical ejector pin when it moves upward can be changed, thus making the vacuum ejector valve suitable for different application scenarios.

[0013] This utility model discloses a vacuum pin valve that, through the cooperation of gears and a gear ring, enables the hand-tightening bolt to rotate, thereby driving the ring scale to rotate. The rotating ring scale changes the reading in the observation hole. At this time, by observing the reading pointed to by the indicator block, the force of the spring on the steel ball can be directly observed. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of this utility model.

[0015] Figure 2 yes Figure 1 Sectional view at point AA.

[0016] Figure 3 This is a left view of the structure of this utility model.

[0017] Figure 4 yes Figure 3 Sectional view at point BB.

[0018] Figure 5 This is a front view of the valve body in this utility model.

[0019] Figure 6 This is a top view of the upper partition plate in this utility model.

[0020] Figure 7 This is a top view of the columnar ejector pin in this utility model.

[0021] Figure 8 This is a front view of the slider in this utility model.

[0022] Figure 9 This is a top view of the limiting ring in this utility model.

[0023] Figure 10 This is a top view of the U-shaped plate in this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Valve body; 2. Outlet pipe; 3. Inlet pipe; 4. Vacuum tube; 5. First vent hole; 6. Upper partition plate; 7. Lower partition plate; 8. First cylinder; 9. Columnar ejector pin; 10. Connecting column; 11. Slider; 12. Annular groove; 13. Through hole; 14. Second cylinder; 15. Steel ball; 16. Spring; 17. Hand-tightening bolt; 18. Threaded cylinder; 19. U-shaped plate; 20. Second vent hole; 21. Limiting ring; 22. Annular scale; 23. Gear ring; 24. Baffle; 25. Gear; 26. Arc plate; 27. Observation hole; 28. Indicator block. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figures 1 to 9As shown, the vacuum pin valve includes a valve body 1. A liquid outlet pipe 2 is fixedly connected to the bottom of the valve body 1, a liquid inlet pipe 3 is fixedly connected to the upper surface of the valve body 1, and a vacuum pipe 4 is fixedly connected to the right side of the valve body 1. A first vent hole 5 is provided on the surface of the valve body 1. An upper partition plate 6 and a lower partition plate 7 are fixedly connected to the inner wall of the valve body 1. A first cylinder 8 is fitted into both the inner walls of the upper partition plate 6 and the lower partition plate 7. A columnar pin 9 is fitted into the inner wall of the valve body 1. A connecting post 10 is fixedly connected to both the surface of the columnar pin 9 and the inner wall of the first cylinder 8. A slider 11 is fixedly connected to the surface of the first cylinder 8. The surface of the slider 11 is in contact with the inner wall of the valve body 1. An annular groove 12 is provided on the surface of the slider 11. A through hole 13 is provided on the left side of the valve body 1. A second cylinder 14 is fixedly connected to the left side of the valve body 1. Steel balls 15 are provided in contact with both the inner wall of the second cylinder 14 and the inner wall of the annular groove 12. A spring 16 is fixedly connected to the left side of the steel balls 15. A hand-tightening bolt 17 is provided in contact with both the left side of the spring 16 and the inner wall of the second cylinder 14. A threaded cylinder 18 is threadedly connected to the surface of the hand-tightening bolt 17. A U-shaped plate 19 is fixedly connected to both the surface of the threaded cylinder 18 and the left side of the valve body 1. A second vent hole 20 is provided on the surface of the second cylinder 14.

[0029] The axis of spring 16 is on the same horizontal line as the center of steel ball 15. The elastic force of spring 16 is greater than the weight of steel ball 15. The first vent 5 is located above the lower partition plate 7. The slider 11 is located above the first vent 5. The vacuum tube 4 is located above the slider 11. The upper partition plate 6 is located above the vacuum tube 4. The inner wall of valve body 1 is fixedly connected to a limit ring 21, which is located between slider 11 and vacuum tube 4.

[0030] It should be noted that the internal space of the valve body 1 is divided into three parts: upper, middle and lower, by the upper partition plate 6 and the lower partition plate 7. The first cylinder 8 and the columnar ejector pin 9 are connected together by the connecting column 10. When the columnar ejector pin 9 moves up a certain distance, the bottom end of the columnar ejector pin 9 separates from the valve body 1, and the vacuum ejector pin valve is in the open state. When the bottom end of the columnar ejector pin 9 is in contact with the inner wall of the valve body 1, the vacuum ejector pin valve is in the closed state. When the air pressure above the slider 11 decreases, the slider 11 can be moved up by the air pressure difference. Through the cooperation of the spring 16, the steel ball 15 and the annular groove 12, the slider 11 is subjected to a certain resistance when it moves up. When there is no air pressure difference between the upper and lower parts of the slider 11, the bottom end of the columnar ejector pin 9 can be tightly fitted with the inner wall of the valve body 1 through the cooperation of the spring 16, the steel ball 15 and the annular groove 12. The limiting ring 21 prevents the annular groove 12 and the steel ball 15 from being separated. The steel ball 15 is located in the through hole 13.

[0031] The air pressure between the slider 11 and the lower partition plate 7 is equalized with the air pressure outside the valve body 1 through the first vent hole 5. The air pressure inside and outside the second cylinder 14 is equalized through the second vent hole 20. When the user turns the hand-tightening bolt 17, the force of the spring 16 on the steel ball 15 can be changed through the cooperation of the hand-tightening bolt 17 and the threaded cylinder 18. At the same time, by adjusting the force of the spring 16 on the steel ball 15, the resistance encountered by the columnar ejector pin 9 when it moves upward can be changed.

[0032] like Figures 1 to 10 As shown, annular scales 22 are attached to the upper and lower sides of the inner wall of the U-shaped plate 19. A toothed ring 23 is fixedly connected to the inner wall of the annular scale 22. Baffles 24 are attached to the left and right sides of the toothed ring 23. The bottom of the baffles 24 is fixedly connected to the inner wall of the U-shaped plate 19. A gear 25 is fixedly connected to the surface of the hand-tightening bolt 17. The gear 25 meshes with the toothed ring 23. An arc-shaped plate 26 is attached to the inner wall of the toothed ring 23. The left and right sides of the arc-shaped plate 26 are fixedly connected to the sides of the baffles 24. An observation hole 27 is opened on the upper surface of the U-shaped plate 19. An indicator block 28 is fixedly connected to the upper surface of the U-shaped plate 19. The observation hole 27 is located above the annular scale 22, and the indicator block 28 is located to the right of the observation hole 27.

[0033] It should be noted that, through the cooperation of gear 25 and gear ring 23, the hand-tightening bolt 17 can drive the ring scale 22 to rotate when it is rotated, and the reading in the observation hole 27 changes through the rotation of the ring scale 22. At this time, by observing the reading pointed to by the indicator block 28, the pushing force of the spring 16 on the steel ball 15 can be directly observed.

[0034] The working principle of this utility model is as follows: First, the vacuum tube 4 is connected to the vacuum pump. When the vacuum pin valve needs to be opened, the vacuum pump reduces the air pressure between the slider 11 and the upper partition plate 6. When the air pressure difference between the upper and lower parts of the slider 11 is greater than the pushing force of the spring 16 on the steel ball 15, the columnar pin 9 moves upward a certain distance through the air pressure difference. At this time, the bottom end of the columnar pin 9 separates from the inner wall of the valve body 1, and the vacuum pin valve is in the open state. When the vacuum pin valve is open, the liquid enters the valve body 1 through the inlet pipe 3, and then is discharged sequentially through the first cylinder 8 and the outlet pipe 2.

[0035] When it is necessary to close the vacuum pin valve, the vacuum pump makes it so that there is no pressure difference between the upper and lower parts of the slider 11. Then, the steel ball 15 pushes the annular groove 12 to make the bottom end of the columnar pin 9 fit tightly against the inner wall of the valve body 1, and puts the vacuum pin valve in the closed state.

[0036] When it is necessary to change the thrust of the spring 16 on the steel ball 15, the hand-tightening bolt 17 can be rotated to move horizontally within the second cylinder 14. The horizontal movement of the hand-tightening bolt 17 changes the thrust of the spring 16 on the steel ball 15. By changing the thrust of the spring 16 on the steel ball 15, the air pressure difference required for the columnar ejector pin 9 to move upwards is changed.

[0037] When the hand-tightening bolt 17 is turned, the gear 25 and the gear ring 23 work together to rotate the ring scale 22, and the reading in the observation hole 27 changes as the ring scale 22 rotates. At this time, the force of the spring 16 on the steel ball 15 can be directly observed by looking at the reading indicated by the indicator block 28.

[0038] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A vacuum pin valve, characterized in that: Includes a valve body (1), the bottom of which is fixedly connected to an outlet pipe (2), the upper surface of which is fixedly connected to an inlet pipe (3), the right side of which is fixedly connected to a vacuum pipe (4), the surface of which is provided with a first vent hole (5), the inner wall of which is fixedly connected to an upper partition plate (6), the inner wall of which is fixedly connected to a lower partition plate (7), the inner walls of the upper partition plate (6) and the lower partition plate (7) are both fitted with a first cylinder (8), the inner wall of which is fitted with a columnar ejector pin (9), the surface of which and the inner wall of which are both fixedly connected to a connecting column (10), the surface of which is fixedly connected to a slider (11), the slider ( The surface of the slider (11) is in contact with the inner wall of the valve body (1). The surface of the slider (11) is provided with an annular groove (12). The left side of the valve body (1) is provided with a through hole (13). The left side of the valve body (1) is fixedly connected with a second cylinder (14). The inner wall of the second cylinder (14) and the inner wall of the annular groove (12) are both fitted with steel balls (15). The left side of the steel balls (15) is fixedly connected with a spring (16). The left side of the spring (16) and the inner wall of the second cylinder (14) are both fitted with a hand-tightening bolt (17). The surface of the hand-tightening bolt (17) is threadedly connected with a threaded cylinder (18). The surface of the threaded cylinder (18) and the left side of the valve body (1) are both fixedly connected with a U-shaped plate (19). The surface of the second cylinder (14) is provided with a second vent hole (20).

2. The vacuum pin valve according to claim 1, characterized in that: The first vent (5) is located above the lower partition plate (7), the slider (11) is located above the first vent (5), the vacuum tube (4) is located above the slider (11), and the upper partition plate (6) is located above the vacuum tube (4).

3. The vacuum pin valve according to claim 1, characterized in that: A limiting ring (21) is fixedly connected to the inner wall of the valve body (1), and the limiting ring (21) is located between the slider (11) and the vacuum tube (4).

4. The vacuum pin valve according to claim 1, characterized in that: The upper and lower sides of the inner wall of the U-shaped plate (19) are fitted with an annular scale (22). The inner wall of the annular scale (22) is fixedly connected with a toothed ring (23). The left and right sides of the toothed ring (23) are fitted with baffles (24). The bottom of the baffles (24) is fixedly connected to the inner wall of the U-shaped plate (19). The surface of the hand-tightening bolt (17) is fixedly connected with a gear (25). The gear (25) meshes with the toothed ring (23). The inner wall of the toothed ring (23) is fitted with an arc-shaped plate (26). The left and right sides of the arc-shaped plate (26) are fixedly connected to the side of the baffle (24). The upper surface of the U-shaped plate (19) is provided with an observation hole (27). The upper surface of the U-shaped plate (19) is fixedly connected with an indicator block (28).

5. The vacuum pin valve according to claim 4, characterized in that: The observation hole (27) is located above the annular scale (22), and the indicator block (28) is located to the right of the observation hole (27).

6. The vacuum pin valve according to claim 1, characterized in that: The axis of the spring (16) is on the same horizontal line as the center of the steel ball (15), and the elastic force of the spring (16) is greater than the weight of the steel ball (15).

Images