Anti-static valve device

Abstract

The utility model discloses an anti-static valve device which comprises a valve body, the outer side of the valve body is fixedly connected with a fixing column, the top of the fixing column is fixedly connected with a connecting column, a valve rod is arranged in the connecting column, the outer side of the valve rod is fixedly connected with a hand wheel, the bottom of the valve rod is fixedly connected with a valve plate, a first sliding groove is formed in the inner wall of the fixing column, and a first steel ball is arranged in the first sliding groove. The upper surface of the valve plate is fixedly connected with two symmetrical limiting plates, second sliding grooves are formed in the side faces of the limiting plates, an oil storage cavity is formed in the valve rod, a piston is arranged in the oil storage cavity, and a second steel ball is arranged in the oil storage cavity. Through the valve rod, the oil storage cavity, the piston, the second steel ball, the through hole and the oil inlet, the problem that after a spring is used for a long time, elasticity is attenuated, and consequently the steel ball is loosened is solved, potential safety accidents are reduced, and through the valve rod, the valve plate, the first sliding groove, the first steel ball, the limiting plate and the second sliding groove, the situation that the valve plate deflects due to rotation of the valve rod to generate static electricity is avoided. And the anti-static effect of the valve is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an anti-static valve device. Background Art

[0002] Valves are control components in gas or liquid delivery systems and are used to control the direction, pressure, and flow of the filling medium. When conveying high-temperature, high-pressure, flammable media, valves are prone to static electricity and sparks, which pose a safety hazard. Therefore, anti-static performance is an important guarantee for the stable operation of valves.

[0003] The anti-static treatment method for valves is to stably conduct the static electricity on the valve stem to the valve body. Existing anti-static valves usually have a hole drilled on the valve stem, and a spring and a steel ball are installed in the hole. The spring pushes the steel column to complete the static electricity conduction. After the valve is used for a long time, the elastic force of the spring will decay to a certain extent, causing the steel ball to not be tightly abutted against the valve body, thereby weakening the anti-static effect of the valve. In addition, the valve plate inside most valves is not limited. When the valve stem rotates, it will cause the valve plate to rotate, thereby generating static electricity, posing a safety hazard. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-static valve device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an anti-static valve device, including a valve body, the outer side of the valve body is fixedly connected to a fixed column, the top of the fixed column is fixedly connected to a connecting column, a valve stem is arranged inside the connecting column, the outer side of the valve stem is fixedly connected to a handwheel, the bottom of the valve stem is fixedly connected to a valve plate, a slide groove is provided on the inner wall of the fixed column, a steel ball is provided inside the slide groove, the upper surface of the valve plate is fixedly connected to two symmetrical limit plates, a slide groove is provided on the side of the limit plate, an oil storage chamber is provided inside the valve stem, a piston is provided inside the oil storage chamber, two steel balls are provided inside the oil storage chamber, a through hole is provided on the outer side of the valve stem, and the top of the valve stem is fixedly connected to an oil inlet.

[0006] Preferably, the slide groove one and the slide groove two are respectively located on both sides of the steel ball one, the slide groove one and the slide groove two are both arc-shaped grooves, the two sides of the steel ball one are respectively located in the slide groove one and the slide groove two, and the steel ball one is respectively slidably connected to the inside of the slide groove one and the slide groove two.

[0007] Preferably, the oil storage chamber is T-shaped, the oil storage chamber is communicated with the through hole, and the inside of the oil storage chamber is slidably connected with the outside of the piston.

[0008] Preferably, the second steel ball is located between the piston and the through hole, and the outer side of the piston passes through the through hole and abuts against the inner wall of the connecting column.

[0009] Preferably, a sealing cover is provided on the top of the oil inlet, and the oil inlet is connected to the inside of the oil storage cavity.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model is provided with a valve stem, an oil storage chamber, a piston, two steel balls, a through hole and an oil inlet. Oil is injected into the oil storage chamber through the oil inlet, and the piston is pushed to move to both sides by the pressure of the oil. The piston makes the two steel columns pass through the through hole and fit with the inner wall of the connecting column. The oil push effectively solves the problem of the loosening of the steel ball caused by the attenuation of the elastic force of the spring after long-term use. When the valve stem rotates, the static electricity is conducted through the valve body, the steel column and the valve stem, avoiding the occurrence of safety accidents caused by sparks generated by static electricity.

[0012] 2. The utility model also provides a valve stem, a valve plate, a slide groove one, a steel ball one, a limit plate and a slide groove two. The two sides of the steel ball one are respectively located inside the slide groove one and the slide groove two. The limit plate and the valve plate are limited by the steel ball pair to avoid the valve plate from self-deflection due to the rotation of the valve stem to generate static electricity, thereby further reducing the hidden dangers of valve safety accidents. In addition, static electricity is conducted through the valve plate, the limit plate, the steel ball one and the valve body, thereby further enhancing the anti-static effect of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0015] Figure 3 This is a cross-sectional view of the internal structure of the fixed column of the utility model;

[0016] Figure 4 It is a schematic diagram of the internal structure of the connecting column of the utility model.

[0017] In the figure: 1. valve body; 2. fixing column; 3. connecting column; 4. valve stem; 5. hand wheel; 6. valve plate; 7. slide groove 1; 8. steel ball 1; 9. limit plate; 10. slide groove 2; 11. oil storage chamber; 12. piston; 13. steel ball 2; 14. through hole; 15. oil inlet. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 The utility model provides a technical solution: an anti-static valve device, including a valve body 1, the outer side of the valve body 1 is welded and fixed to a fixing column 2, the top of the fixing column 2 is welded and fixed to a connecting column 3, the inside of the fixing column 2 and the connecting column 3 are hollow, a valve stem 4 is arranged inside the connecting column 3, the top of the valve stem 4 extends to the top of the connecting column 3 and is welded and fixed to a hand wheel 5, the bottom of the valve stem 4 extends to the inside of the valve body 1 and is welded and fixed to a valve plate 6, the valve plate 6 is an arc plate, a slide groove 7 is provided on the inner wall of the fixing column 2, the inside of the slide groove 7 is slidably connected to the outside of a steel ball 8, The upper surface of the valve plate 6 is welded and fixed with two symmetrical limit plates 9, and a slide groove 10 is provided on the side of the limit plate 9, and the slide groove 10 is slidably connected with the outer side of the steel ball 8. An oil storage chamber 11 is provided inside the valve stem 4, and oil is arranged inside the oil storage chamber 11. The inside of the oil storage chamber 11 is slidably connected with the outer side of the piston 12, and a sealing ring is arranged on the outer side of the piston 12. A steel ball 13 is sleeved inside the oil storage chamber 11, and a through hole 14 is provided on the outer side of the valve stem 4. The outer diameter of the through hole 14 is smaller than the outer diameter of the steel ball 13, and the top of the valve stem 4 is welded and fixed with the oil inlet 15;

[0020] The slide groove 17 and the slide groove 2 10 are respectively located on both sides of the steel ball 18, and the two sides of the steel ball 18 are respectively located in the slide groove 17 and the slide groove 2 10, and the steel ball 18 is slidably connected with the inside of the slide groove 17 and the slide groove 2 10, respectively. The oil storage chamber 11 is T-shaped, and the oil storage chamber 11 is connected with the through hole 14. The inside of the oil storage chamber 11 is slidably connected with the outside of the piston 12. The valve stem 4 is rotated by the hand wheel 5 to lift the valve plate 6, so as to realize the opening and closing of the valve body 1 for conveying the medium. When the valve plate 6 moves up and down, it will drive the limit plate 9 to move synchronously. Since the steel ball 18 is located in the slide groove 17 and the limit plate 9 at the same time, the limit plate 9 can be limited by the steel ball 18 to avoid the generation of static electricity due to the self-rotation or deflection of the valve plate 6. The rotation of the steel ball 18 itself makes the up and down movement of the valve plate 6 and the limit plate 9 smoother and unobstructed, and at the same time limits the valve plate 6 and the limit plate 9 moves left and right, and the steel ball 8 is used to prevent the sliding plate from moving in the slide groove, which is also prone to static electricity problems. The safety of the valve is improved, and the anti-static effect of the valve body 1 is further improved. The steel ball 13 is located between the piston 12 and the through hole 14. The outer side of the piston 12 passes through the through hole 14 and abuts against the inner wall of the connecting column 3. A sealing cover is set on the top of the oil inlet 15. The oil inlet 15 is connected with the inside of the oil storage chamber 11. When the valve stem 4 is installed, the oil is passed into the oil storage chamber 11 through the oil inlet 15. Under the strong push of the oil pressure, the piston 12 moves. The outer side of the steel ball 13 is pushed by the piston 12 to pass through the through hole 14 and abut against the inner wall of the connecting column 3. The static electricity can be conducted through the steel ball 13. At the same time, the steel ball 13 is used to make the rotation of the valve stem 4 smoother. The steel ball 13 can not only rotate in the circumferential and vertical directions, but also enhance the actual use effect.

[0021] Working principle: when the valve body 1 is conveying the medium, the valve stem 4 is rotated by the hand wheel 5 to make the valve plate 6 rise and fall, so as to realize the opening and closing of the valve body 1, and the oil is passed into the oil storage chamber 11 through the oil inlet 15. Under the push of the oil pressure, the piston 12 moves, and the outer side of the steel ball 13 is pushed by the piston 12 to pass through the through hole 14 and abut against the inner wall of the connecting column 3. When the valve stem 4 rotates and moves, the steel ball 13 will rotate synchronously without affecting the rotation of the valve stem 4, and the connecting column 3 and the valve stem 4 will form an electrostatic conduction path through the valve stem 4 to avoid sparks generated by static electricity inside the valve body 1. When the valve plate 6 moves up and down, it will drive the limit plate 9 to move synchronously. Since the steel ball 8 is located in the slide groove 7 and the limit plate 9 at the same time, the limit plate 9 can be limited by the steel ball 8 to avoid the generation of static electricity due to the self-rotation or deflection of the valve plate 6. At the same time, the fixed column 2, the valve plate 6 and the steel ball 8 form an electrostatic conduction path to further improve the anti-static effect of the valve body 1.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-static valve device, comprising a valve body (1), characterized in that: The outer side of the valve body (1) is fixedly connected to the fixed column (2), the top of the fixed column (2) is fixedly connected to the connecting column (3), a valve stem (4) is arranged inside the connecting column (3), the outer side of the valve stem (4) is fixedly connected to the hand wheel (5), the bottom of the valve stem (4) is fixedly connected to the valve plate (6), the inner wall of the fixed column (2) is provided with a slide groove (7), a steel ball (8) is arranged inside the slide groove (7), the upper surface of the valve plate (6) is fixedly connected to two symmetrical limit plates (9), the side of the limit plate (9) is provided with a slide groove (10), an oil storage chamber (11) is arranged inside the valve stem (4), a piston (12) is arranged inside the oil storage chamber (11), and two steel balls (13) are arranged inside the oil storage chamber (11), a through hole (14) is arranged on the outer side of the valve stem (4), and the top of the valve stem (4) is fixedly connected to the oil inlet (15).

2. An anti-static valve device according to claim 1, characterized in that: The slide groove 1 (7) and the slide groove 2 (10) are respectively located on both sides of the steel ball 1 (8); the slide groove 1 (7) and the slide groove 2 (10) are both arc-shaped grooves; the two sides of the steel ball 1 (8) are respectively located in the slide groove 1 (7) and the slide groove 2 (10); the steel ball 1 (8) is respectively slidably connected with the inside of the slide groove 1 (7) and the slide groove 2 (10).

3. An anti-static valve device according to claim 1, characterized in that: The oil storage chamber (11) is T-shaped, the oil storage chamber (11) is in communication with the through hole (14), and the interior of the oil storage chamber (11) is slidably connected to the outside of the piston (12).

4. The anti-static valve device according to claim 1, characterized in that: The second steel ball (13) is located between the piston (12) and the through hole (14), and the outer side of the piston (12) passes through the through hole (14) and abuts against the inner wall of the connecting column (3).

5. The anti-static valve device according to claim 1, characterized in that: A sealing cover is provided on the top of the oil inlet (15), and the oil inlet (15) is communicated with the interior of the oil storage cavity (11).

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