Adjustable high-pressure-resistant three-eccentric center butterfly valve

Abstract

The utility model belongs to the technical field of butterfly valves, and particularly relates to an adjustable high-pressure-resistant three-eccentric center butterfly valve which comprises a valve body. A butterfly plate is mounted in the middle of the valve body; the middle part of the butterfly plate is fixedly connected with a valve shaft; the top of the valve shaft penetrates through the middle of the valve body; two sets of sliding grooves are formed in the middle of the valve body. The sliding groove is formed in the valve body. Every two sliding grooves form a group. The two sliding grooves are arranged oppositely. A sliding block is slidably connected to the middle of the sliding groove. The side wall of the sliding block is fixedly connected with a spring. The end of the spring is fixedly connected to the end of the sliding groove. The ends of the two sliding blocks are fixedly connected with a fixing plate. The middle part of the valve body is fixedly connected with two groups of fixing blocks; the end parts of the two fixed blocks are fixedly connected with a quantity control plate; the butterfly plate rotates to be pushed away from the flow groove in a stepped mode, the size of a flow channel can be effectively adjusted step by step in the rotating process of the butterfly plate, and fluid disorder caused when the butterfly plate in the valve body is rapidly opened or closed is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of butterfly valves, and particularly relates to an adjustable high-pressure resistant triple eccentric butterfly valve. Background Technique

[0002] A triple eccentric butterfly valve is a valve with a special design, characterized in that the axis of the valve stem deviates from the center of the disc and the center of the body at the same time, and there is a certain angle between the axis of rotation of the valve seat and the axis of the valve body passage.

[0003] The triple eccentric butterfly valve mainly consists of components such as a valve body, a butterfly disc, a valve stem, and a seal. The adjustable high-pressure resistant triple eccentric butterfly valve is a valve that controls the fluid flow rate by adjusting the position of the butterfly disc, while withstanding a high-pressure environment and maintaining good sealing performance. The butterfly valve controls the opening and closing of the butterfly disc by rotating the valve stem. When the valve stem rotates, the butterfly disc rotates accordingly, changing the gap between it and the valve seat, thereby controlling the fluid passing through volume.

[0004] In the prior art, when the butterfly disc of the adjustable high-pressure resistant triple eccentric butterfly valve is quickly opened or closed, the fluid medium in the pipeline generates a large impact on the butterfly disc due to the sudden change in flow velocity, resulting in increased wear of the butterfly disc during use.

[0005] Therefore, the utility model provides an adjustable high-pressure resistant triple eccentric butterfly valve. Content of the Utility Model

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background technique.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: An adjustable high-pressure resistant triple eccentric butterfly valve described in the utility model includes a valve body; a butterfly disc is installed in the middle of the valve body; a valve shaft is fixedly connected to the middle of the butterfly disc; the top of the valve shaft penetrates through the middle of the valve body; two groups of chutes are opened in the middle of the valve body; the chutes are arranged inside the valve body; two of the chutes are in a group; the two chutes are arranged oppositely; a slider is slidably connected to the middle of the chute; a spring is fixedly connected to the side wall of the slider; the end of the spring is fixedly connected to the end of the chute; the ends of the two sliders are fixedly connected to a fixing plate; two groups of fixing blocks are fixedly connected to the middle of the valve body; a control plate is fixedly connected to the end of the two fixing blocks; the two control plates are arranged oppositely; the control plate is arranged in a stepped manner; a plurality of flow grooves are opened in the middle of the control plate; a control block is installed in the middle of the flow groove; a fixing rod is fixedly connected to the side wall of the control block; the end of the fixing rod is fixedly connected to the side wall of the fixing plate; through the above structure, the butterfly disc is pushed away from the flow groove step by step by rotation, which can effectively make the butterfly disc gradually adjust the size of the flow channel during rotation, and reduce the fluid disorder caused by the rapid opening or closing of the butterfly disc inside the valve body.

[0008] Preferably, a driver is fixedly connected to the middle of the valve body; a small gear is fixedly connected to the output end of the driver; a large gear is fixedly connected to the end of the valve shaft; the small gear and the large gear are meshed; through the above structure, the small gear and the large gear can accurately transmit the power in the driver to the valve shaft, effectively reducing the loss of energy during the transmission process, and can realize different flow rates and pressures under different working conditions of the butterfly plate.

[0009] Preferably, a plurality of grooves are formed in the side wall of the fixing plate; the plurality of grooves are formed on the side away from the fixing rod; a roller is rotatably connected to the middle of the groove; through the above structure, the plurality of rollers can effectively reduce the friction generated by the direct contact between the butterfly plate and the fixing plate during the process of the butterfly plate rotating and pushing the fixing plate, and effectively reduce the problems of wear or scratches on the butterfly plate.

[0010] Preferably, a net plate is fixedly connected to the middle of the valve body; the net plate is fixedly connected to the outside of the small gear and the large gear; through the above structure, the net plate can effectively block external objects from directly hitting the small gear and the large gear, and effectively reduce the damage caused by accidental impact on the small gear and the large gear.

[0011] Preferably, an oil storage bag is fixedly connected to the top of the net plate; the oil storage bag is fixedly connected to the inside of the net plate; an oil inlet pipe is fixedly connected to the middle of the oil storage bag; the middle of the oil inlet pipe penetrates through the top of the net plate; an oil outlet pipe is fixedly connected to the side wall of the oil inlet pipe; the end of the oil outlet pipe is arranged at the position corresponding to the contact position of the small gear and the large gear; a dial plate is fixedly connected to the middle of the small gear; through the above structure, discharging the lubricating oil to the contact position of the small gear and the large gear can form a lubricating film on its surface, effectively reducing the direct contact between the small gear and the large gear, and effectively reducing the wear degree during the rotation process between the small gear and the large gear.

[0012] Preferably, a heat insulation cover is installed in the middle of the valve body; the heat insulation cover is fixedly connected to the middle of the valve body; through the above structure, the heat insulation cover can effectively isolate the direct influence of the high temperature or low temperature environment outside the valve body on the valve body, and effectively reduce the thermal stress deformation or cold brittleness phenomenon of the butterfly plate due to excessive temperature difference.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. For the adjustable high-pressure resistant three-eccentric butterfly valve of the present utility model, by rotating the butterfly plate in a stepped manner to push it away from the flow groove, it can effectively make the butterfly plate gradually adjust the size of the flow channel during the rotation process, and reduce the fluid disorder caused by the rapid opening or closing of the butterfly plate inside the valve body.

[0015] 2. For the adjustable high-pressure resistant three-eccentric butterfly valve of the present utility model, through the small gear and the large gear, the power in the driver can be accurately transmitted to the valve shaft, effectively reducing the loss of energy during the transmission process, and different flow rates and pressures can be realized under different working conditions of the butterfly plate. Brief Description of the Drawings

[0016] The present utility model will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 is a perspective view of an adjustable high-pressure resistant triple eccentric butterfly valve in the present utility model;

[0018] Figure 2 is a schematic structural view of the small gear in the present utility model;

[0019] Figure 3 is a schematic structural view of the valve body in the present utility model;

[0020] Figure 4 is a schematic structural view of the chute in the present utility model;

[0021] Figure 5 is a schematic structural view of the roller in the present utility model;

[0022] Figure 6 is a schematic structural view of the heat insulation cover in the present utility model;

[0023] Figure 7 is a schematic structural view of the flow control plate in the present utility model;

[0024] Figure 8 is a schematic structural view of the oil storage bladder in the present utility model;

[0025] Figure 9 is a schematic structural view of the dial plate in the present utility model.

[0026] In the figure: 1. Valve body; 10. Butterfly plate; 11. Valve shaft; 12. Chute; 13. Slide block; 14. Spring; 15. Fixed block; 16. Flow control plate; 17. Flow groove; 18. Flow control block; 19. Fixed rod; 20. Fixed plate; 2. Driver; 21. Small gear; 22. Large gear; 3. Groove; 31. Roller; 4. Mesh plate; 5. Oil storage bladder; 51. Inlet pipe; 52. Outlet pipe; 53. Dial plate; 6. Heat insulation cover; 7. Elastic pad. Detailed Embodiments

[0027] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] Such as Figures 1 to 7As shown, an adjustable high-pressure resistant three-eccentric butterfly valve described in an embodiment of the utility model comprises a valve body 1; a butterfly plate 10 is installed in the middle of the valve body 1; a valve shaft 11 is fixedly connected to the middle of the butterfly plate 10; the top of the valve shaft 11 passes through the middle of the valve body 1; two groups of slide grooves 12 are opened in the middle of the valve body 1; the slide grooves 12 are arranged inside the valve body 1; two of the slide grooves 12 form a group; after the two slide grooves 12 are arranged oppositely; a slider 13 is slidably connected to the middle of the slide groove 12; a spring 14 is fixedly connected to the side wall of the slider 13; the end of the spring 14 is fixedly connected to the end of the slide groove 12; two The ends of the sliders 13 are fixedly connected to a fixing plate 20; two groups of fixing blocks 15 are fixedly connected to the middle of the valve body 1; the ends of the two fixing blocks 15 are fixedly connected to a control plate 16; the two control plates 16 are arranged opposite to each other; the control plates 16 are arranged in a stepped manner; a plurality of flow slots 17 are opened in the middle of the control plate 16; a control block 18 is installed in the middle of the flow slot 17; a fixing rod 19 is fixedly connected to the side wall of the control block 18; the end of the fixing rod 19 is fixedly connected to the side wall of the fixing plate 20; when the valve body 1 is in use, the valve shaft 11 is rotated, and the butterfly plate 1 is moved by the valve shaft 11 0 rotates inside the valve body 1. When the butterfly plate 10 rotates, one side of the middle part contacts the side wall of the fixed plate 20. When the butterfly plate 10 continues to rotate, the fixed plate 20 pushes the control block 18 through the fixed rod 19. At the same time, the fixed plate 20 slides in the middle of the slide groove 12 through the slider 13. The spring 14 is elastically stretched along with the slider 13. The control block 18 with a larger diameter is first pushed out of the corresponding flow slot 17 position by the fixed rod 19. The medium flow enters from one end of the valve body 1 to the other end and flows through the middle of the flow slot 17 where the control block 18 is separated. When the butterfly plate 10 continues to rotate, The remaining control block 18 is pushed out of the flow groove 17, so as to accurately control the flow of the medium as the butterfly plate 10 rotates. By pushing it away from the flow groove 17 through the step-by-step rotation of the butterfly plate 10, the butterfly plate 10 can effectively gradually adjust the size of the flow channel during the rotation process, reduce the fluid turbulence caused by the rapid opening or closing of the butterfly plate 10 inside the valve body 1, effectively reduce the pressure drop when the fluid passes through the butterfly plate 10, effectively reduce the turbulence of the fluid inside the valve body 1, reduce the impact and wear of the fluid on the butterfly plate 10, and effectively extend the service life of the butterfly plate 10.

[0029] like Figure 1 , Figure 2 , Figure 9As shown, a driver 2 is fixedly connected to the middle of the valve body 1; a small gear 21 is fixedly connected to the output end of the driver 2; a large gear 22 is fixedly connected to the end of the valve shaft 11; the small gear 21 and the large gear 22 are meshed; during operation, when it is necessary to open the valve body 1 outside the working area, the driver 2 is controlled to start through the control system, so that the output end of the driver 2 rotates. When the driver 2 rotates, the small gear 21 is driven to rotate. When the small gear 21 rotates, the large gear 22 is driven to rotate simultaneously by meshing with the large gear 22. When the large gear 22 rotates, the valve shaft 11 is driven to rotate, thereby realizing the opening or closing state of the valve body 1 at any time. Through the small gear 21 and the large gear 22, the power in the driver 2 can be accurately transmitted to the valve shaft 11, effectively reducing the energy loss during the transmission process, enabling different flow rates and pressures under different working conditions of the butterfly plate 10, and being able to adjust the state of the butterfly plate 10 in real time, effectively improving the automation level in the production process.

[0030] As Figure 5 and Figure 7 shown, a plurality of grooves 3 are formed in the side wall of the fixing plate 20; the plurality of grooves 3 are formed on the side away from the fixing rod 19; a roller 31 is rotatably connected to the middle of the groove 3; during operation, when the butterfly plate 10 rotates and contacts one side of the fixing plate 20, it first contacts the roller 31. When the butterfly plate 10 continues to rotate, the roller 31 rolls inside the groove 3 along with the rotation of the butterfly plate 10. Through the plurality of rollers 31, the friction generated by the direct contact between the butterfly plate 10 and the fixing plate 20 during the rotation of the butterfly plate 10 and the process of pushing the fixing plate 20 can be effectively reduced, effectively reducing the problems of wear or scratches on the butterfly plate 10, effectively reducing the problem of leakage caused by the wear of the butterfly plate 10 resulting in poor internal sealing of the valve body 1, and being able to effectively extend the service life of the butterfly plate 10 and maintain good sealing performance.

[0031] As Figure 1 and Figure 8 shown, a net plate 4 is fixedly connected to the middle of the valve body 1; the net plate 4 is fixedly connected outside the small gear 21 and the large gear 22; during operation, when the valve body 1 is in use, dust and impurities in the air are intercepted by the net plate 4 when they float, and when external objects impact the small gear 21 and the large gear 22, they are protected by the net plate 4. Through the net plate 4, external objects can be effectively blocked from directly hitting the small gear 21 and the large gear 22, effectively reducing the damage caused by accidental impacts on the small gear 21 and the large gear 22, being able to effectively block dust, impurities and fine particles in the air from adhering to the surfaces of the small gear 21 and the large gear 22, and effectively reducing the risk of wear and jamming at the meshing part of the small gear 21 and the large gear 22.

[0032] As Figure 1 , Figure 2 , Figure 8As shown in the figure, an oil storage bladder 5 is fixedly connected to the top of the screen plate 4; the oil storage bladder 5 is fixedly connected inside the screen plate 4; a feed pipe 51 is fixedly connected to the middle of the oil storage bladder 5; the middle of the feed pipe 51 penetrates through the top of the screen plate 4; an outlet pipe 52 is fixedly connected to the side wall of the feed pipe 51; the end of the outlet pipe 52 is arranged at the position where the corresponding pinion 21 and the large gear 22 are in contact; a dial plate 53 is fixedly connected to the middle of the pinion 21; during operation, lubricating oil is injected into the interior of the oil storage bladder 5 through the end of the feed pipe 51 for storage. When the pinion 21 rotates through the output end of the driver 2, the dial plate 53 rotates simultaneously with the pinion 21. When the dial plate 53 rotates, its end contacts and squeezes the middle of the oil storage bladder 5. A one-way valve is provided in the middle of the feed pipe 51. When the oil storage bladder 5 is squeezed, the lubricating oil inside is discharged from the end of the outlet pipe 52 through pressure. The lubricating oil enters the meshing position of the pinion 21 and the large gear 22 through the end of the outlet pipe 52. By discharging the lubricating oil to the contact position of the pinion 21 and the large gear 22, a lubricating film can be formed on their surfaces, which can effectively reduce the direct contact between the pinion 21 and the large gear 22, effectively reduce the wear degree during the rotation between the pinion 21 and the large gear 22, and the lubricating oil can effectively reduce the large amount of heat generated when the pinion 21 and the large gear 22 rotate, effectively cool and dissipate heat from the pinion 21 and the large gear 22, and can effectively reduce problems such as deformation or damage caused by overheating.

[0033] As Figure 6 shown in the figure, a heat insulation cover 6 is installed in the middle of the valve body 1; the heat insulation cover 6 is fixedly connected to the middle of the valve body 1; during operation, when the medium passes through the inside of the valve body 1, the heat insulation cover 6 isolates the temperature inside the valve body 1 from the outside of the valve body 1. Through the heat insulation cover 6, the direct influence of the high-temperature or low-temperature environment outside the valve body 1 on the valve body 1 can be effectively isolated, effectively reducing the thermal stress deformation or cold brittleness phenomenon of the butterfly plate 10 due to excessive temperature difference, effectively reducing the risk of scalding caused by direct contact with the surface of the valve body 1 in a high-temperature environment, and effectively improving the safety of the working environment.

[0034] As Figure 9 shown in the figure, an elastic pad 7 is installed in the middle of the dial plate 53; the elastic pad 7 is fixedly connected to the middle of the dial plate 53; during operation, when the dial plate 53 rotates and squeezes the middle of the oil storage bladder 5, the elastic pad 7 contacts the surface of the oil storage bladder 5. Through the elastic pad 7, the contact pressure between the dial plate 53 and the oil storage bladder 5 can be effectively increased, the gap between the dial plate 53 and the oil storage bladder 5 can be effectively reduced, and due to the certain deformation ability of the elastic pad 7, it can adapt to the slight unevenness or deformation between the dial plate 53 and the oil storage bladder 5, effectively reducing the direct contact and friction between the dial plate 53 and the oil storage bladder 5, and effectively reducing the wear speed of the dial plate 53 and the oil storage bladder 5.

[0035] During operation, when the valve body 1 is in use, the valve shaft 11 is rotated. By means of the valve shaft 11, the butterfly plate 10 rotates inside the valve body 1. When the butterfly plate 10 rotates, one side of its middle part contacts the side wall of the fixed plate 20. When the butterfly plate 10 continues to rotate, the fixed plate 20 pushes the flow control block 18 through the fixed rod 19. At the same time, the fixed plate 20 slides in the middle of the chute 12 through the slider 13, and the spring 14 is elastically stretched along with the slider 13. The flow control block 18 with a larger diameter first pushes away from the corresponding flow groove 17 through the fixed rod 19. The medium flow enters from one end of the valve body 1 and flows through the middle of the flow groove 17 from which the flow control block 18 has separated to the other end. When the butterfly plate 10 continues to rotate, the remaining flow control blocks 18 are pushed out of the flow groove 17, so as to accurately control the medium flow to flow along with the rotation of the butterfly plate 10. When it is necessary to open the valve body 1 outside the working area, the driver 2 is controlled to start through the control system, so that the output end of the driver 2 rotates. When the driver 2 rotates, the small gear 21 is driven to rotate. When the small gear 21 rotates, the large gear 22 is driven to rotate simultaneously by meshing with the large gear 22. When the large gear 22 rotates, the valve shaft 11 is driven to rotate, so as to realize the opening or closing state of the valve body 1 at any time. When the butterfly plate 10 rotates and contacts one side of the fixed plate 20, it first contacts the roller 31. When the butterfly plate 10 continues to rotate, the roller 31 rolls in the groove 3 along with the rotation of the butterfly plate 10. When the valve body 1 is in use, when dust and impurities in the air are floating, they are intercepted by the mesh plate 4. When external objects impact the small gear 21 and the large gear 22, they are protected by the mesh plate 4. Lubricating oil is injected into the oil storage bladder 5 through the end of the oil inlet pipe 51 for storage. When the small gear 21 rotates through the output end of the driver 2, the dial 53 rotates simultaneously with the small gear 21. When the dial 53 rotates, its end contacts and squeezes the middle part of the oil storage bladder 5. A one-way valve is provided in the middle of the oil inlet pipe 51. When the oil storage bladder 5 is squeezed, the lubricating oil inside is discharged from the end of the oil outlet pipe 52 under pressure. The lubricating oil enters the meshing position of the small gear 21 and the large gear 22 through the end of the oil outlet pipe 52. When the medium passes through the valve body 1, the temperature inside the valve body 1 is isolated from the outside of the valve body 1 by the heat insulation cover 6. When the dial 53 rotates and squeezes the middle part of the oil storage bladder 5, it contacts the surface of the oil storage bladder 5 through the elastic pad 7.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable high-pressure resistant three-eccentric butterfly valve, comprising a valve body (1); characterized in that: A butterfly plate (10) is installed in the middle of the valve body (1); a valve shaft (11) is fixedly connected to the middle of the butterfly plate (10); the top of the valve shaft (11) passes through the middle of the valve body (1); two groups of slide grooves (12) are opened in the middle of the valve body (1); the slide grooves (12) are arranged inside the valve body (1); two slide grooves (12) form a group; after the two slide grooves (12) are arranged opposite to each other; a slider (13) is slidably connected to the middle of the slide groove (12); a spring (14) is fixedly connected to the side wall of the slider (13); the end of the spring (14) is fixedly connected to the end of the slide groove (12) ; The ends of the two sliders (13) are fixedly connected to a fixing plate (20); the middle of the valve body (1) is fixedly connected to two groups of fixing blocks (15); the ends of the two fixing blocks (15) are fixedly connected to a volume control plate (16); the two volume control plates (16) are arranged opposite to each other; the volume control plates (16) are arranged in a stepped manner; a plurality of flow slots (17) are opened in the middle of the volume control plate (16); a volume control block (18) is installed in the middle of the flow slot (17); a fixing rod (19) is fixedly connected to the side wall of the volume control block (18); the end of the fixing rod (19) is fixedly connected to the side wall of the fixing plate (20).

2. The adjustable high-pressure resistant three-eccentric butterfly valve according to claim 1 is characterized in that: A driver (2) is fixedly connected to the middle of the valve body (1); a small gear (21) is fixedly connected to the output end of the driver (2); a large gear (22) is fixedly connected to the end of the valve shaft (11); and the small gear (21) and the large gear (22) are meshed with each other.

3. The adjustable high-pressure resistant three-eccentric butterfly valve according to claim 2 is characterized in that: The side wall of the fixing plate (20) is provided with a plurality of grooves (3); the plurality of grooves (3) are provided on a side away from the fixing rod (19); and a roller (31) is rotatably connected to the middle of the groove (3).

4. The adjustable high-pressure resistant three-eccentric butterfly valve according to claim 3 is characterized by: A mesh plate (4) is fixedly connected to the middle of the valve body (1); the mesh plate (4) is fixedly connected to the outside of the small gear (21) and the large gear (22).

5. The adjustable high-pressure resistant three-eccentric butterfly valve according to claim 4 is characterized in that: An oil storage bag (5) is fixedly connected to the top of the mesh plate (4); the oil storage bag (5) is fixedly connected to the inside of the mesh plate (4); an oil inlet pipe (51) is fixedly connected to the middle of the oil storage bag (5); the middle of the oil inlet pipe (51) passes through the top of the mesh plate (4); an oil outlet pipe (52) is fixedly connected to the side wall of the oil inlet pipe (51); the end of the oil outlet pipe (52) is arranged at a position corresponding to the fitting of the small gear (21) and the large gear (22); and a shift plate (53) is fixedly connected to the middle of the small gear (21).

6. The adjustable high-pressure resistant three-eccentric butterfly valve according to claim 5 is characterized in that: A thermal insulation cover (6) is installed in the middle of the valve body (1); the thermal insulation cover (6) is fixedly connected to the middle of the valve body (1).

7. The adjustable high-pressure resistant triple-eccentric butterfly valve according to claim 5 is characterized in that: An elastic pad (7) is installed in the middle of the shifting plate (53); the elastic pad (7) is fixedly connected to the middle of the shifting plate (53).

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