Pneumatic sealing vacuum valve

Abstract

The invention relates to the technical field of vacuum valves, and discloses a valve body, the top of the valve body is fixedly connected with a first connecting flange, the top of the first connecting flange is provided with a second connecting flange, the inner wall of the second connecting flange is fixedly connected with a sealing piece, and the outer wall of the top of the sealing piece is fixedly connected with a first heat preservation frame; the top of the first heat preservation frame is fixedly connected with a third connecting flange, and the top of the third connecting flange is provided with a fourth connecting flange. An external air pump is connected with the one-way valve, the one-way valve is inflated with air through the air pump, the diaphragm type air pressure tank is inflated with air, the air cylinder is inflated through the air inlet pipe, and therefore the air cylinder is driven, when power is cut off, the electromagnetic valve is closed, and the air stored in the diaphragm type air pressure tank enters the air bag through the connecting pipe; therefore, a gap between the movable ring and the valve plate is sealed, and gas leakage of the valve caused by sudden gas and power failure is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum valves, in particular to a gas-driven sealed vacuum valve. Background Art

[0002] Vacuum valves refer to vacuum system components used to change the direction of air flow, adjust the amount of air flow, and cut off or connect pipelines in vacuum systems. The closing parts of vacuum valves are sealed with rubber seals or metal seals. The bellows of bellows stop valves are made of stainless steel, high zinc brass JI80, plastic and other materials. The closing parts of stop valves with small diameters (diameters below 10 mm) can be sealed with diaphragms. Ball plug valves can be used for low vacuum and medium vacuum.

[0003] Existing technical solution: A gate valve for a vacuum chamber, which includes a gate valve plate, which is fixed on a gate valve pressure seat composed of a capsule core and a sealing plate; the gate valve pressure seat is fixedly installed on two main shafts, and the main shaft is connected to the active plate driven by the cylinder through a driven plate.

[0004] Most of the valves in the existing technology are manually controlled valves. By turning the hand wheel, the screw drives the valve plate to move repeatedly in the horizontal direction, so that the valve body can be opened and closed. The disadvantages are that it can only be operated manually, with a low degree of automation, and the control stroke of the valve plate can only be adjusted by turning the screw, which takes a long time to adjust. Therefore, a single cylinder is used to replace manual driving in the later stage. However, the single cylinder drive has the following disadvantages: a single cylinder can only be connected to the middle position of the top of the valve, which leads to imbalance on both sides of the valve body when the cylinder drives the valve to rise and fall inside the valve body, which makes the valve body rise and fall unsteadily and the valve body operation unstable. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an air-driven sealed vacuum valve, which solves the problems of slow opening, no maintenance in rising (the valve will automatically drop when the air and power are cut off, which is dangerous), large pressure fluctuations, easy to be affected by pressure and temperature, and relatively easy to be damaged.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an air-driven sealed vacuum valve, comprising a valve body, a first connecting flange is fixedly connected to the top of the valve body, a second connecting flange is arranged on the top of the first connecting flange, a sealing member is fixedly connected to the inner wall of the second connecting flange, a first insulation frame is fixedly connected to the top outer wall of the sealing member, a third connecting flange is fixedly connected to the top of the first insulation frame, a fourth connecting flange is arranged on the top of the third connecting flange, a second insulation frame is fixedly connected to the top of the inner wall of the fourth connecting flange, a cylinder is fixedly connected to the top of the second insulation frame, and retaining components are arranged on both sides of the top of the valve body. , an air intake pipe is fixedly connected to the top of one side of the cylinder, and an air cut-off sealing assembly is provided at the other end of the air intake pipe, static rings are fixedly connected to both sides of the inner wall, bottom and inner wall of the inner wall of the valve body, an air bag is provided on the outer wall of one side of the static ring, a dynamic ring is provided at the other end of the air bag, a compression spring is sleeved on the outer wall of the air bag, a driving shaft is fixedly connected to the output end of the cylinder, a valve plate is fixedly connected to the bottom of the driving shaft, and evenly distributed limiting grooves are provided on the outer wall of the driving shaft, a clamping assembly is provided between the inner walls of the second insulation frame and the first insulation frame, a ventilation assembly is penetrated and provided on the top of one side of the first insulation frame, and an air outlet pipe is penetrated and fixedly connected to the bottom of one side of the cylinder.

[0007] Preferably, the retaining assembly includes two sealing cylinders, the bottom of the sealing cylinder penetrates and is fixedly connected to the top of the valve body, a sliding rod penetrates and is slidably connected to the middle of the top of the sealing cylinder, and the sliding rod is fixedly connected to the valve plate, a sealing ring is fixedly connected to the middle of the outer wall of the sliding rod, the top of the sliding rod penetrates and is threadedly connected to a first spring one-way valve, and an air inlet is penetrated and opened in the middle of the outer wall of the sliding rod.

[0008] Preferably, the outer wall of the sliding rod is sleeved with a spring, and the spring is arranged on the top of the sealing ring, and a second spring one-way valve is penetrated and threadedly connected to one side of the top of the sealing cylinder.

[0009] Preferably, the air cut-off sealing assembly includes a diaphragm air pressure tank, the bottom of which is penetrated by a connecting pipe and fixedly connected thereto, one side of the diaphragm air pressure tank is penetrated by and provided with a one-way valve, the outer wall of the connecting pipe is penetrated by and provided with a solenoid valve, and the other end of the connecting pipe is penetrated by and fixedly connected to the air bag.

[0010] Preferably, the clamping assembly includes a heat conducting plate, which is fixedly connected to the bottom of the second insulation frame and the top of the first insulation frame, the inner wall of the heat conducting plate is provided with a copper-based alloy, the outer wall of the heat conducting plate is penetrated and fixedly connected with a heat dissipating fin, and the heat dissipating fin is penetrated and fixedly connected to the copper-based alloy.

[0011] Preferably, a uniformly distributed heating pipe is fixedly connected to the bottom of the inner wall of the second heat-insulating frame, and the heating pipe is fixedly connected to the top of the inner wall of the first heat-insulating frame.

[0012] Preferably, the ventilation assembly includes a cooling fan, a filter and a heat-dissipating window, the cooling fan is fixedly connected to the top of one side of the first insulation frame and the bottom of one side of the second insulation frame, the filter is arranged between the first insulation frame and the second insulation frame, and the heat-dissipating window is fixedly connected between the outside of the first insulation frame and the second insulation frame.

[0013] Preferably, the first connecting flange and the second connecting flange are fixed by bolts, and the third connecting flange and the fourth connecting flange are fixed by bolts.

[0014] The present invention provides a gas-driven sealed vacuum valve having the following beneficial effects: 1. The present invention is connected to the one-way valve through an external air pump, the air pump inflates the one-way valve, fills the gas into the diaphragm air pressure tank, and inflates the cylinder through the air inlet pipe, thereby driving the cylinder. When the power is off, the solenoid valve is closed, and the gas stored in the diaphragm air pressure tank enters the air bag through the connecting pipe, thereby sealing the gap between the moving ring and the valve plate, avoiding gas leakage caused by sudden air and power failure.

[0015] The present invention drives the drive shaft to move through the output end of the cylinder, thereby driving the valve plate to open or close. When the valve plate moves downward, it drives the slide rod to move downward, and injects air into the sealing cylinder through the first spring one-way valve on the slide rod through the air inlet. When the valve plate moves upward, it drives the slide rod to move upward, and discharges the air in the sealing cylinder through the second spring one-way valve on the sealing cylinder, thereby avoiding the risk of gas leakage caused by the automatic opening of the valve due to sudden gas and power outages.

[0016] The present invention utilizes the two-way memory effect of the copper-based alloy to achieve shape switching of the copper-based alloy at different temperatures to achieve a specific clamping or releasing action. The heat dissipation fins and the heat conduction plate transfer heat to the copper-based alloy through the heating tube, and the heat dissipation window and the heat dissipation fan are opened to cool the copper-based alloy with external air. The device has a holding function and can maintain a closed state for a long time by cutting off gas and power, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is a side view of the present invention; Figure 4 is a cross-sectional view of the valve body of the present invention; Figure 5It is a schematic diagram of the static ring of the present invention; Figure 6 is a cross-sectional view of a seal of the present invention; Figure 7 An exploded view of the airbag of the present invention; Figure 8 It is an exploded diagram of the heat preservation frame of the present invention; Fig. 9 It is a cross-sectional view of the copper-based alloy during cooling of the present invention; Fig.10 This is a cross-sectional view of the copper-based alloy during heating according to the present invention.

[0018] Among them, 1. valve body; 2. first connecting flange; 3. second connecting flange; 4. sealing cylinder; 5. sealing element; 6. first insulation frame; 7. third connecting flange; 8. fourth connecting flange; 9. second insulation frame; 10. cylinder; 11. valve plate; 12. diaphragm air pressure tank; 13. air inlet pipe; 14. one-way valve; 15. connecting pipe; 16. solenoid valve; 17. air outlet pipe; 18. sliding rod; 19. sealing ring; 20. air inlet; 21. first spring one-way valve; 22. second spring one-way valve; 23. spring; 24. static ring; 25. compression spring; 26. dynamic ring; 27. air bag; 28. driving shaft; 29. ​​copper-based alloy; 30. heat dissipation fin; 31. heating pipe; 32. heat dissipation fan; 33. filter; 34. heat dissipation window; 35. limit groove; 36. heat conduction plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] Example: Please see attached Figure 1 -Attached Fig.10The embodiment of the present invention provides a gas-driven sealed vacuum valve, comprising a valve body 1, a first connecting flange 2 is fixedly connected to the top of the valve body 1, a second connecting flange 3 is arranged on the top of the first connecting flange 2, a sealing member 5 is fixedly connected to the inner wall of the second connecting flange 3, a first insulation frame 6 is fixedly connected to the outer wall of the top of the sealing member 5, a third connecting flange 7 is fixedly connected to the top of the first insulation frame 6, a fourth connecting flange 8 is arranged on the top of the third connecting flange 7, a second insulation frame 9 is fixedly connected to the top of the inner wall of the fourth connecting flange 8, a cylinder 10 is fixedly connected to the top of the second insulation frame 9, retaining components are arranged on both sides of the top of the valve body 1, and a sealing member 5 is fixedly connected to the inner wall of the second insulation frame 9 on one side of the top of the cylinder 10. An air inlet pipe 13, the other end of the air inlet pipe 13 is provided with a gas cut-off sealing component, both sides of the inner wall bottom of the inner wall of the valve body 1 are fixedly connected with static rings 24, an air bag 27 is provided on the outer wall of one side of the static ring 24, a dynamic ring 26 is provided on the other end of the air bag 27, and a compression spring 25 is sleeved on the outer wall of the air bag 27, a drive shaft 28 is fixedly connected to the output end of the cylinder 10, a valve plate 11 is fixedly connected to the bottom of the drive shaft 28, and a uniformly distributed limiting groove 35 is opened on the outer wall of the drive shaft 28, a clamping component is provided between the inner walls of the second insulation frame 9 and the first insulation frame 6, a ventilation component is penetrated and provided on the top of one side of the first insulation frame 6, and an air outlet pipe 17 is penetrated and fixedly connected to the bottom of one side of the cylinder 10; The static ring 24, the compression spring 25, the dynamic ring 26 and the air bag 27 keep the end faces in close contact and in relative sliding to prevent fluid leakage. The first connecting flange 2 and the second connecting flange 3 facilitate the disassembly and repair of the valve body 1 and the sealing tube 4. The third connecting flange 7 and the fourth connecting flange 8 facilitate the disassembly of the first insulation frame 6 and the second insulation frame 9, thereby inspecting and repairing the clamping assembly.

[0021] Please refer to the attached Figure 1 -Attached Figure 4 , the retaining assembly includes two sealing cylinders 4, the bottom of the sealing cylinder 4 penetrates and is fixedly connected to the top of the valve body 1, a sliding rod 18 penetrates and is slidably connected to the middle of the top of the sealing cylinder 4, and the sliding rod 18 is fixedly connected to the valve plate 11, a sealing ring 19 is fixedly connected to the middle of the outer wall of the sliding rod 18, a first spring check valve 21 is penetrated and threadedly connected to the top of the sliding rod 18, an air inlet 20 is penetrated and opened in the middle of the outer wall of the sliding rod 18, a spring 23 is sleeved on the outer wall of the sliding rod 18, and the spring 23 is arranged on the top of the sealing ring 19, and a second spring check valve 22 is penetrated and threadedly connected to one side of the top of the sealing cylinder 4; When in use, the output end of the cylinder 10 drives the drive shaft 28 to move, driving the valve plate 11 to open or close. When the valve plate 11 moves downward, it drives the slide rod 18 to move downward, and injects air into the sealing tube 4 through the first spring one-way valve 21 on the slide rod 18 through the air inlet 20. When the valve plate 11 moves upward, it drives the slide rod 18 to move upward, and discharges the air in the sealing tube 4 through the second spring one-way valve 22 on the sealing tube 4. The pressure of the first spring one-way valve 21 is not as high as the pressure of the second spring one-way valve 22. The second spring one-way valve 22 can also be replaced as needed. The sealing ring 19 can prevent the air in the sealing tube 4 from leaking. When the slide rod 18 and the sealing ring 19 descend, the original air in the sealing tube 4 is sent to the valve body 1.

[0022] Please refer to the attached Figure 2 -Attached Figure 3 and attached Figure 7 The air-off sealing assembly includes a diaphragm air pressure tank 12, a connecting pipe 15 is passed through and fixedly connected to the bottom of the diaphragm air pressure tank 12, a one-way valve 14 is passed through and provided on one side of the diaphragm air pressure tank 12, a solenoid valve 16 is passed through and provided on the outer wall of the connecting pipe 15, and the other end of the connecting pipe 15 is passed through and fixedly connected to the air bag 27; The one-way valve 14 is connected to the external air pump, the air pump inflates the one-way valve 14, fills the gas into the diaphragm air pressure tank 12, and inflates the cylinder 10 through the air inlet pipe 13, thereby driving the cylinder 10. When the power is off, the solenoid valve 16 is closed, and the gas stored in the diaphragm air pressure tank 12 enters the air bag 27 through the connecting pipe 15, thereby sealing the gap between the moving ring 26 and the valve plate 11.

[0023] Please refer to the attached Figure 6 and attached Figure 8 The clamping assembly includes a heat conducting plate 36, the heat conducting plate 36 is fixedly connected to the bottom of the second heat-insulating frame 9 and the top of the first heat-insulating frame 6, the inner wall of the heat conducting plate 36 is provided with a copper-based alloy 29, the outer wall of the heat conducting plate 36 is penetrated and fixedly connected with a heat dissipation fin 30, and the heat dissipation fin 30 is penetrated and fixedly connected with the copper-based alloy 29, the bottom of the inner wall of the second heat-insulating frame 9 is fixedly connected with a uniformly distributed heating tube 31, and the heating tube 31 is fixedly connected to the top of the inner wall of the first heat-insulating frame 6; The heating tube 31 is turned on, and the heating tube 31 heats the heat dissipation fins 30 and the heat conduction plate 36, and the heat is transferred to the copper-based alloy 29 through the heat dissipation fins 30 and the heat conduction plate 36. When the copper-based alloy 29 is heated to a certain temperature, the copper-based alloy 29 is Fig.10 The shape of the.

[0024] Please refer to the attached Figure 6The ventilation assembly includes a cooling fan 32, a filter 33 and a heat-fan window 34. The cooling fan 32 is fixedly connected to the top of one side of the first heat-insulating frame 6 and the bottom of one side of the second heat-insulating frame 9. The filter 33 is arranged between the first heat-insulating frame 6 and the second heat-insulating frame 9. The heat-fan window 34 is fixedly connected between the first heat-insulating frame 6 and the outer side of the second heat-insulating frame 9. When the valve 11 is closed, the heat dissipation window 34 and the heat dissipation fan 32 are opened to cool the copper-based alloy 29 by the outside air, and the temperature of the copper-based alloy 29 is conducted out through the heat conduction plate 36, and then the heat is dissipated through the heat dissipation fins 30. Fig. 9 The shape in the figure can filter the outside air through the filter net 33.

[0025] Please see attached Figure 1 The first connecting flange 2 and the second connecting flange 3 are fixed by bolts, and the third connecting flange 7 and the fourth connecting flange 8 are fixed by bolts.

[0026] Although 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. A gas-driven sealed vacuum valve, comprising a valve body (1), characterized in that: The top of the valve body (1) is fixedly connected to a first connecting flange (2), the top of the first connecting flange (2) is provided with a second connecting flange (3), the inner wall of the second connecting flange (3) is fixedly connected to a sealing member (5), the top outer wall of the sealing member (5) is fixedly connected to a first heat-insulating frame (6), the top of the first heat-insulating frame (6) is fixedly connected to a third connecting flange (7), the top of the third connecting flange (7) is provided with a fourth connecting flange (8), the top of the inner wall of the fourth connecting flange (8) is fixedly connected to a second heat-insulating frame (9), the top of the second heat-insulating frame (9) is fixedly connected to a cylinder (10), both sides of the top of the valve body (1) are provided with retaining assemblies, the top of one side of the cylinder (10) is fixedly connected to an air intake pipe (13), the air intake pipe (13) is fixedly connected to the top of the air intake pipe (13). The other end is provided with a gas cut-off sealing component, both sides of the inner wall bottom of the inner wall of the valve body (1) are fixedly connected with static rings (24), one side of the outer wall of the static ring (24) is provided with an air bag (27), the other end of the air bag (27) is provided with a dynamic ring (26), the outer wall of the air bag (27) is sleeved with a compression spring (25), the output end of the cylinder (10) is fixedly connected with a drive shaft (28), the bottom of the drive shaft (28) is fixedly connected with a valve plate (11), the outer wall of the drive shaft (28) is provided with evenly distributed limit grooves (35), a clamping component is provided between the inner walls of the second insulation frame (9) and the first insulation frame (6), a ventilation component is penetrated and provided on the top of one side of the first insulation frame (6), and an air outlet pipe (17) is penetrated and fixedly connected to the bottom of one side of the cylinder (10).

2. The air-driven sealed vacuum valve according to claim 1, characterized in that: The retaining assembly comprises two sealing cylinders (4), the bottom of the sealing cylinder (4) penetrates and is fixedly connected to the top of the valve body (1), a sliding rod (18) penetrates and is slidably connected to the middle of the top of the sealing cylinder (4), and the sliding rod (18) is fixedly connected to the valve plate (11), a sealing ring (19) is fixedly connected to the middle of the outer wall of the sliding rod (18), a first spring one-way valve (21) penetrates and is threadedly connected to the top of the sliding rod (18), and an air inlet (20) is penetrated and opened in the middle of the outer wall of the sliding rod (18).

3. The air-driven sealed vacuum valve according to claim 2, characterized in that: The outer wall of the slide rod (18) is sleeved with a spring (23), and the spring (23) is arranged on the top of the sealing ring (19). A second spring one-way valve (22) penetrates and is threadedly connected to one side of the top of the sealing cylinder (4).

4. The air-driven sealed vacuum valve according to claim 1, characterized in that: The air cut-off seal assembly comprises a diaphragm air pressure tank (12), a connecting pipe (15) passing through the bottom of the diaphragm air pressure tank (12) and being fixedly connected thereto, a one-way valve (14) passing through one side of the diaphragm air pressure tank (12) and being provided therewith, a solenoid valve (16) passing through the outer wall of the connecting pipe (15) and being provided therewith, and the other end of the connecting pipe (15) passing through and being fixedly connected to an air bag (27).

5. The air-driven sealed vacuum valve according to claim 1, characterized in that: The clamping assembly comprises a heat conducting plate (36), the heat conducting plate (36) being fixedly connected to the bottom of the second heat-insulating frame (9) and the top of the first heat-insulating frame (6), the inner wall of the heat conducting plate (36) being provided with a copper-based alloy (29), the outer wall of the heat conducting plate (36) being penetrated by and fixedly connected with a heat dissipating fin (30), and the heat dissipating fin (30) being penetrated by and fixedly connected to the copper-based alloy (29).

6. The air-driven sealed vacuum valve according to claim 1, characterized in that: The bottom of the inner wall of the second heat-insulating frame (9) is fixedly connected to a uniformly distributed heating pipe (31), and the heating pipe (31) is fixedly connected to the top of the inner wall of the first heat-insulating frame (6).

7. The air-driven sealed vacuum valve according to claim 1, characterized in that: The ventilation assembly comprises a heat dissipation fan (32), a filter (33) and a heat dissipation window (34); the heat dissipation fan (32) is fixedly connected to the top of one side of the first heat-insulating frame (6) and the bottom of one side of the second heat-insulating frame (9); the filter (33) is arranged between the first heat-insulating frame (6) and the second heat-insulating frame (9); and the heat dissipation window (34) is fixedly connected between the first heat-insulating frame (6) and the outer side of the second heat-insulating frame (9).

8. The air-driven sealed vacuum valve according to claim 1, characterized in that: The first connecting flange (2) and the second connecting flange (3) are fixed by bolts, and the third connecting flange (7) and the fourth connecting flange (8) are fixed by bolts.

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