Ultrahigh-pressure multifunctional valve

Abstract

The utility model relates to the technical field of ultrahigh-pressure valves, and discloses an ultrahigh-pressure multifunctional valve which comprises a valve body, a valve seat, a valve plate, an oil cylinder upper cover, a high-pressure sealing piece, a clamping groove, a buffering channel, a connecting channel and a driving device, the bottom of the valve body is connected with an installation base, and the top of the valve body is connected with the driving device. The driving device comprises an air cylinder, an upper cover, a middle cover, a lower cover and double pistons, the upper cover, the middle cover and the lower cover are connected to the air cylinder, the double pistons are arranged in the air cylinder, piston rods fixedly sleeve the pistons, one ends of the piston rods extend to be connected with the upper cover of the air cylinder, the other ends of the piston rods extend into a valve plate cavity of the valve body, and high-pressure connectors are connected to the two ends of the valve body. The inner side of the high-pressure connector is connected with a valve seat. According to the utility model, the electromagnetic directional valve is used for controlling the valve switch, the double valve seats and the valve plate are hydraulically pressed to assist sealing, the hydraulic drive is adopted, the automation degree is high, the structure is simple and reliable, the size is small, the use is convenient and simple, the anti-pollution capability is strong, and the cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-high pressure valves, in particular to an ultra-high pressure multi-action valve. Background Art

[0002] The flat gate valve is a sliding valve with a parallel gate as the closing part. Its closing part is generally composed of a valve plate and a valve seat. The pressing force of the valve plate to the valve seat is controlled by the medium pressure acting on the valve plate. The medium pushes the valve plate to press the valve seat, thereby forming a seal.

[0003] In the switch control of high-pressure fluid, the flat valve is a widely used control component. The flow and cutoff of the fluid are controlled by the switch of the flat valve. The advantages of the flat valve are strong anti-pollution, stable performance during use, and reduced failure rate, thereby greatly reducing costs while ensuring safety. At present, the flat valve is widely used. The flat valve is controlled by a drive device with a high degree of automation. The flat valve switch can be accurately controlled by feedback from a pressure sensor, and the pressure test accuracy is greatly improved.

[0004] The existing flat plate valve has very large dimensions and a relatively complex structure, and requires special tools for installation, which is very inconvenient for use in some small spaces, and also brings great troubles in maintenance and replacement. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an ultra-high pressure multi-action valve, which aims to improve the problem that installation requires the use of special tools, which is very inconvenient for use in some small spaces, and maintenance and replacement also bring great troubles.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ultra-high pressure multi-acting valve, comprising a valve body, a valve seat, a valve plate, an oil cylinder cover, a high-pressure seal, a slot, a buffer channel, a connecting channel and a driving device, the bottom of the valve body is connected to a mounting base, the top of the valve body is connected to a support sleeve, the support sleeve is connected to a driving device, the driving device comprises a double cylinder, a cylinder cover, a cylinder middle cover and a cylinder lower cover connected to the upper and lower ends of the cylinder, and a piston arranged in the cylinder, a piston rod is fixedly sleeved on the piston, one end of the piston rod extends to connect the oil cylinder cover, and the other end extends into the valve plate cavity of the valve body, both ends of the valve body are connected to high-pressure joints, the inner side of the high-pressure joint is connected to a valve seat, a valve plate is arranged between the valve seat and the valve seat, a guide hole is arranged on the valve plate and the valve seat, a fluid channel is arranged on the high-pressure joint, a first connecting pipe is arranged on the cylinder cover, a solenoid reversing valve is arranged on the outer side of the connecting pipe, and a second connecting pipe is arranged at the bottom of the first connecting pipe.

[0007] As a further description of the above technical solution:

[0008] One side of the fluid channel is connected with a slot, one end of the valve plate is sleeved with a high-pressure seal and is installed in the slot through the high-pressure seal.

[0009] As a further description of the above technical solution:

[0010] A wave spring is provided on one side of the high-pressure sealing member. When the valve is closed, a high-pressure cavity is formed between the clamping groove, the valve seat and the valve plate.

[0011] As a further description of the above technical solution:

[0012] The end of the piston rod is connected to the upper piston rod, a limiting groove is provided at the end of the upper piston rod, and the valve plate is fixed on the limiting groove of the piston rod.

[0013] As a further description of the above technical solution:

[0014] The connection port of the high-pressure joint is connected with a safety hole, and the leaked liquid in the valve body can flow out from the safety hole.

[0015] As a further description of the above technical solution:

[0016] One end of the buffer channel is connected to a connecting joint, the buffer channel is connected to the connecting channel through the connecting joint, and the diameter of the connecting channel is equal to the aperture of the guide hole.

[0017] As a further description of the above technical solution:

[0018] The cylinder lower cover is provided with a star-shaped sealing ring, and the star-shaped sealing ring is sleeved on the piston rod.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, double high-pressure connectors and double valve seats are used, which are easy to disassemble without the need for special disassembly tools, low processing difficulty and production cost, convenient assembly and maintenance, good sealing performance, double-layer cylinder structure, and switch position sensor. The working water pressure can reach 2500bar (250Mpa).

[0021] 2. In the utility model, the valve switch is controlled by an electromagnetic reversing valve, and hydraulic pressure is used to assist sealing between the double valve seat and the valve plate. It is hydraulically driven, has a high degree of automation, a simple and reliable structure, a very small size, is easy and simple to use, has strong anti-pollution ability, and has a low cost. The driving medium is compressed air, and there is no leakage to pollute the environment. The working medium is water, which is simple to discharge and recycle, and does not pollute the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a front side sectional view of an ultra-high pressure multi-action valve proposed by the utility model.

[0023] Legend:

[0024] 1. Valve body; 2. Valve seat; 3. Valve plate; 4. Mounting base; 5. Cylinder; 6. Cylinder upper cover; 7. Cylinder lower cover; 8. Piston; 9. Piston rod; 10. Valve plate cavity; 11. High-pressure connector; 12. Cylinder middle cover; 13. First connecting pipe; 14. Solenoid reversing valve; 15. Support sleeve; 16. Slot; 17. High-pressure seal; 18. Wave spring; 19. Upper piston rod; 20. Connecting port; 21. Safety hole; 22. Buffer channel; 24. Connecting channel; 25. Star-shaped sealing ring; 26. Second connecting pipe. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1 The utility model provides an embodiment: an ultra-high pressure multi-action valve, comprising a valve body 1, a valve seat 2, a valve plate 3, an oil cylinder cover, a high pressure seal 17, a slot 16, a buffer channel 22, a connecting channel 24 and a driving device, the driving device comprising a cylinder 5, a cylinder cover 6 and an oil cylinder cover 7 connected to the upper and lower ends of the cylinder 5, and a piston 8 arranged in the cylinder 5, a piston rod 9 is fixedly sleeved on the piston 8, one end of the piston rod 9 extends to connect the oil cylinder cover 6, and the other end extends into the valve plate cavity 10 of the valve body 1, and both ends of the valve body 1 are connected to high pressure connectors 1 1. The inner side of the high-pressure joint 11 is connected with a valve seat 2, a valve plate 3 is arranged between the valve seat 2, a guide hole is arranged on the valve plate 3 and the valve seat 2, the valve plate 3 is movably placed in the valve plate cavity 10, there is a certain gap between the valve plate 3 and the high-pressure joint 11, the valve seat 2 is arranged between the valve plate 3 and the high-pressure joint 11, the valve plate 3 can adjust the best position by itself when the valve seats 2 on both sides are pressed tightly, a fluid channel is arranged on the high-pressure joint 11, and a connecting pipe 13 is arranged on the cylinder upper cover 6, the cylinder middle cover 12 and the oil cylinder lower cover 7, and the opening and closing of the ultra-high pressure multi-action valve is controlled by the electromagnetic reversing valve 14;

[0027] A card slot 16 is connected to one side of the fluid channel, a high-pressure seal 17 is sleeved on one end of the valve plate 3, and is installed in the card slot 16 through the high-pressure seal 17. A wave spring 18 is provided on one side of the high-pressure seal 17. When the valve is closed, a high-pressure cavity is formed between the card slot 16, the valve seat 2 and the valve plate 3. Under the action of liquid pressure, the valve seat 2 moves toward the side of the valve plate 3. The greater the liquid pressure, the greater the force pressing on the valve plate 3, thereby playing a sealing role.

[0028] The end of the piston rod 9 is connected to the upper piston rod 19. The end of the upper piston rod 19 has a limit groove. The valve plate 3 is fixed on the limit groove of the piston rod 9. The connection port 20 of the high-pressure joint 11 is connected to the safety hole 21. The leaked liquid in the valve body can flow out from the safety hole 21 to prevent the valve from being damaged by excessive pressure in the valve body, thereby improving the safety performance of the valve. One end of the buffer channel 22 is connected to a connecting joint 23. The buffer channel 22 is connected to the channel 24 through the connecting joint 23. The diameter of the connecting channel 24 is equal to the aperture of the guide hole. The buffer channel 22 can effectively realize the seamless connection between the connecting channel 24 and the buffer channel 22, thereby preventing leakage due to pressure changes during the circulation of high-pressure liquid. It can not only ensure the safety of equipment and personnel, but also better observe and judge the leakage of the valve.

[0029] A star-shaped sealing ring 25 is provided on the cylinder lower cover 7 , and the star-shaped sealing ring 25 is sleeved on the piston rod 9 to prevent the gas in the cylinder 5 from entering the valve plate cavity 10 .

[0030] Working principle: There is a certain gap between the valve plate 3 and the high-pressure connector 11, and the valve seat 2 is arranged between the valve plate 3 and the high-pressure connector 11. The valve plate 3 can adjust the best position by itself when the valve seats 2 on both sides are pressed tightly. A fluid channel is arranged on the high-pressure connector 11, and a connecting pipe 13 is arranged on the cylinder upper cover 6, the cylinder middle cover 12 and the oil cylinder lower cover 7. The opening and closing of the ultra-high pressure multi-action valve is controlled by the electromagnetic reversing valve 14. When the valve is closed, a high-pressure cavity is formed between the card slot 16, the valve seat 2 and the valve plate 3. Under the action of the liquid pressure, the valve seat 2 moves to the side of the valve plate 3. The greater the liquid pressure, the greater the force pressing on the valve plate 3, thereby playing a sealing role. Through the buffer channel 22, there can be The utility model can effectively realize the seamless connection between the connecting channel 24 and the buffer channel 22, and prevent leakage due to pressure changes during the circulation of high-pressure liquid, which can not only ensure the safety of equipment and personnel but also better observe and judge the leakage of the valve. The utility model controls the valve 14 to switch through the electromagnetic reversing valve, and adopts hydraulic pressure to assist sealing between the double valve seat 2 and the valve plate 3. It is hydraulically driven, has a high degree of automation, a simple and reliable structure, a very small size, is easy to use and simple, has strong anti-pollution ability, and has a low cost. In addition, the double high-pressure connector and double valve seat 2 design are adopted, which is easy to disassemble, does not require the use of special disassembly tools, has low processing difficulty and production cost, is easy to assemble and disassemble and maintain, and has good sealing performance.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultra-high pressure multi-action valve, comprising a valve body (1), a valve seat (2), a valve plate (3), an oil cylinder cover, a high pressure seal (17), a slot (16), a buffer channel (22), a connecting channel (24) and a drive device, characterized in that: The bottom of the valve body (1) is connected to a mounting base (4), the top of the valve body (1) is connected to a support sleeve (15), the support sleeve (15) is connected to a driving device, the driving device comprises a double cylinder (5), a cylinder upper cover (6) connected to the upper and lower ends of the cylinder (5), a cylinder middle cover (12) and a cylinder lower cover, and a piston (8) arranged in the cylinder (5), the piston (8) is fixedly sleeved with a piston rod (9), one end of the piston rod (9) extends to connect to the oil cylinder upper cover, and the other end extends into the valve plate cavity (10) of the valve body (1), the valve Both ends of the body (1) are connected to high-pressure joints (11), the inner side of the high-pressure joint (11) is connected to a valve seat (2), a valve plate (3) is provided between the valve seat (2), the valve plate (3) and the valve seat (2) are provided with flow guide holes, a fluid channel is provided on the high-pressure joint (11), the cylinder upper cover (6), the cylinder middle cover (12) and the oil cylinder lower cover (7) are all provided with a first connecting pipe (13), an electromagnetic reversing valve (14) is installed on the outer side of the connecting pipe (13), and a second connecting pipe (26) is provided at the bottom of the first connecting pipe (13).

2. The ultra-high pressure multi-action valve according to claim 1, characterized in that: One side of the fluid channel is connected to a slot (16), one end of the valve plate (3) is sleeved with a high-pressure seal (17), and is installed in the slot (16) via the high-pressure seal (17).

3. The ultra-high pressure multi-action valve according to claim 1, characterized in that: A wave spring (18) is provided on one side of the high-pressure sealing element (17); when the valve is closed, a high-pressure cavity is formed between the clamping groove (16), the valve seat (2) and the valve plate (3).

4. The ultra-high pressure multi-action valve according to claim 1, characterized in that: The end of the piston rod (9) is connected to the upper piston rod (19), a limiting groove is formed at the end of the upper piston rod (19), and the valve plate (3) is fixed on the limiting groove of the piston rod (9).

5. The ultra-high pressure multi-action valve according to claim 1, characterized in that: The connection port (20) of the high-pressure joint (11) is connected to a safety hole (21), and leaked liquid in the valve body can flow out from the safety hole (21).

6. The ultra-high pressure multi-action valve according to claim 1, characterized in that: One end of the buffer channel (22) is connected to a connecting joint (23), and the buffer channel (22) is connected to the connecting channel (24) via the connecting joint (23), and the diameter of the connecting channel (24) is equal to the aperture of the guide hole.

7. The ultra-high pressure multi-action valve according to claim 1, characterized in that: The cylinder lower cover (7) is provided with a star-shaped sealing ring (25), and the star-shaped sealing ring (25) is sleeved on the piston rod (9).

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