Heat insulation type butterfly valve for high-temperature fluid

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a heat insulation type butterfly valve for high-temperature fluid, which comprises a first pipeline, the top end of the first pipeline is communicated with a connecting pipe, the top end of the connecting pipe is communicated with a connecting cover, the top end of the inner wall of the connecting cover is rotatably connected with a ventilation fan, and the left side of the connecting cover is provided with a fixed cover. A motor is fixedly connected to the left side of the fixing cover, the output end of the motor penetrates through the fixing cover and is fixedly connected with a first rotating rod, a first bevel gear is fixedly connected to the right side of the first rotating rod, and a second bevel gear is rotatably connected to the middle of the top end of the connecting pipe; and the second bevel gear is in meshed connection with the first bevel gear. According to the utility model, through the cooperation among the motor, the fixed cover and the heat dissipation cover, the damage of high temperature to the device can be reduced, and through the cooperation among the gear, the rack and the inductor, the valve can be automatically opened according to the fluid amount.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a heat-insulating butterfly valve used for high-temperature fluids. Background Art

[0002] The butterfly valve is a commonly used fluid control valve, and its name comes from its structure that resembles butterfly wings. Its main feature is to control the flow of fluid through a circular or oval valve disc. If you need to control the flow of high-temperature fluid in a pipeline, you need to use a heat-insulated butterfly valve for high-temperature fluids.

[0003] After searching, the Chinese patent announcement number is: CN218883024U, which discloses a butterfly valve with a heat insulation protection structure, including a butterfly valve housing and a valve stem, wherein a valve butterfly plate is installed inside the butterfly valve housing through the rotation of the valve stem, the top of the butterfly valve housing is fixedly connected to a control housing, and the top of the valve stem is fixedly connected to a heat insulation bevel gear member; in the utility model, the bevel gear jacket, the heat insulation member and the positioning block of the heat insulation bevel gear member can be set as a gear assembly composed of heat insulation materials, so that the overall heat conduction effect of the heat insulation bevel gear member is poor, and the heat transmitted from the inside of the butterfly valve to the valve stem is difficult to be transmitted. By transferring the temperature of the adjusting hand wheel to the rotating rod and the adjusting hand wheel, when the high-calorie fluid is transmitted inside the butterfly valve, the temperature of the adjusting hand wheel will not be too high, which will make it inconvenient for the staff to adjust. The practical butterfly valve proposed in this invention can obtain better heat insulation protection effect. However, during the actual use of the device, the high temperature will heat the adjusting structure such as the rotating rod. In order to ensure the heat insulation effect, the adjusting structure such as the rotating rod cannot be cooled well while keeping warm. Therefore, after long-term use, the mechanical structure may be damaged due to the inability to cool the adjusting structure, thereby reducing the service life of the device. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a heat-insulating butterfly valve for high-temperature fluids, aiming to improve the problem in the prior art that it is impossible to cool the regulating structure while keeping the fluid warm.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an insulated butterfly valve for high-temperature fluid, comprising a first pipeline, the top end of the first pipeline is connected to a connecting pipe, the top end of the connecting pipe is connected to a connecting cover, the top end of the inner wall of the connecting cover is rotatably connected to a ventilation fan, a fixed cover is provided on the left side of the connecting cover, a motor is fixedly connected to the left side of the fixed cover, the output end of the motor passes through the fixed cover and is fixedly connected to a first rotating rod, the right side of the first rotating rod is fixedly connected to a first bevel gear, the middle part of the top end of the connecting pipe is rotatably connected to a second bevel gear, the second bevel gear is meshed with the first bevel gear, the bottom of the second bevel gear passes through the connecting pipe and is fixedly connected to a second rotating rod, the outer side of the second rotating rod is fixedly connected to a hollow butterfly valve, and an opening and closing mechanism is provided on the outer side of the first pipeline.

[0006] Through the above technical solution: the hollow characteristics of the hollow butterfly valve itself can isolate heat when in contact with high-temperature fluid, and the rotation of the ventilation fan can reduce the temperature of structures such as the rotating rod through the heat dissipation cover and the connecting pipe to avoid heat damage to the equipment.

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

[0008] The opening and closing mechanism includes a rotating ring, which is rotatably connected to the rear side of the first pipe, a reserved opening is opened on the outer side of the rotating ring, the left side of the reserved opening is connected to a positioning cover, the left side of the positioning cover is connected to a sealing cover, a switch is fixedly connected to the left side of the sealing cover, a positioning plate is fixedly connected to the left bottom of the sealing cover, the inner side of the positioning plate is connected to a U-shaped rod, the right side of the top end of the U-shaped rod passes through the sealing cover and is fixedly connected to a sealing gasket, the left side of the top end of the positioning plate is fixedly connected to a ball shaft, a spring is arranged on the left side of the outer wall of the U-shaped rod, the top end of the spring is fixedly connected to the ball shaft, and the other end of the spring is fixedly connected to the top end of the positioning plate.

[0009] Through the above technical solution: when closing the valve causes fluid accumulation, the fluid will flow into the sealing cover through the reserved port, and exert pressure on the sealing gasket through gravity, so as to drive the U-shaped rod and the ball shaft to move downward to push the switch to open, thereby starting the motor to open the valve.

[0010] As a further description of the above technical solution:

[0011] A shield is arranged on the outside of the switch, a hinge is fixedly connected to the outer top of the shield, and the shield is rotatably connected to the sealing cover through the hinge.

[0012] Through the above technical solution: the protective cover can protect the switch from being disturbed by external impurities and other factors.

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

[0014] The left side of the first pipe is rotatably connected with a gear, the left side of the rotating ring is fixedly connected with a rack, and the rack is meshingly connected with the gear.

[0015] Through the above technical solution: the rotating gear can drive the rack to rotate through meshing transmission, and the rotation of the rack can drive the rotating ring to rotate to adjust the position of the reserved opening.

[0016] As a further description of the above technical solution:

[0017] A rotating plate is rotatably connected to the top left side of the first pipe, and a clamping block is fixedly connected to the left bottom side of the rotating plate, and the clamping block is engaged with the gear.

[0018] Through the above technical solution: rotating the rotating plate can drive the clamping block to rotate, and when the clamping block is engaged with the gear, the rotation of the gear will be restricted to fix the position of the reserved opening.

[0019] As a further description of the above technical solution:

[0020] The rear side of the rotating ring is rotatably connected with a second pipe, and the outer sides of the second pipe and the first pipe are both fixedly connected with fixing rings, and the outer sides of the two fixing rings are both provided with a plurality of connecting holes.

[0021] Through the above technical solution: the device can be connected to the pipeline through the connecting hole, and the second pipeline can ensure that the rotating ring can still rotate freely when connected to the pipeline.

[0022] As a further description of the above technical solution:

[0023] A heat dissipation cover is fixedly connected to one side adjacent to the fixing cover and the connecting cover, and a plurality of heat dissipation plates are fixedly connected to the middle of the outer wall of the second rotating rod.

[0024] Through the above technical solution: the heat dissipation plate can increase the contact area between the second rotating rod and the air, and the heat dissipation cover can improve the fluidity of the airflow.

[0025] As a further description of the above technical solution:

[0026] The bottom of the first pipeline is connected to a bearing, the bottom of the second bevel gear passes through the hollow butterfly valve and is rotatably connected to the bearing, and a sealing ring is fixedly connected to the outer bottom of the second rotating rod.

[0027] Through the above technical solution: the stability of the hollow butterfly valve during rotation can be improved through the bearing, and the sealing performance between the hollow butterfly valve and the bearing can be improved through the sealing ring.

[0028] The utility model has the following beneficial effects:

[0029] 1. In the utility model, the starting motor can drive the first rotating rod and the first bevel gear to rotate, so as to drive the second bevel gear and the second rotating rod to rotate through meshing transmission, so as to control the opening and closing of the hollow butterfly valve and prevent heat from affecting the motor. The rotation of the heat dissipation fan can supply air to the heat dissipation cover and the connecting pipe, and the air flow supplied can cool the second rotating rod. The hollow butterfly valve can form an air layer through its own hollowness, and the air layer can be used to ensure that ventilation does not affect the heat insulation effect on the fluid, thereby increasing the service life of the device.

[0030] 2. In the utility model, when the hollow butterfly valve is closed, the fluid in one side of the pipe will gradually gather to raise the horizontal plane. At this time, the fluid will enter the sealing cover through the reserved opening, exerting pressure on the sealing gasket to drive the U-shaped rod to move downward. Moving the U-shaped rod will drive the ball shaft to move, so as to push and open the switch, so that the motor starts to open the hollow butterfly valve. The valve can be automatically opened according to the fluid accumulation and the liquid level, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A three-dimensional diagram of a heat-insulating butterfly valve for high-temperature fluids proposed by the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of a hollow butterfly valve of a heat-insulating butterfly valve for high-temperature fluids proposed by the utility model;

[0033] Figure 3 The utility model is a schematic diagram of an opening and closing mechanism of a heat-insulating butterfly valve for high-temperature fluids.

[0034] Figure 4 The utility model is a schematic diagram of a rack structure of a heat-insulating butterfly valve for high-temperature fluids.

[0035] Legend:

[0036] 1. First pipeline; 2. Opening and closing mechanism; 201. Rotating ring; 202. Reserved opening; 203. Positioning cover; 204. Sealing cover; 205. Switch; 206. Positioning plate; 207. U-shaped rod; 208. Sealing pad; 209. Ball shaft; 210. Spring; 3. Connecting pipe; 4. Connecting cover; 5. Fixed cover; 6. Motor; 7. First rotating rod; 8. First bevel gear; 9. Second bevel gear; 10. Second rotating rod; 11. Hollow butterfly valve; 12. Bearing; 13. Sealing ring; 14. Heat sink; 15. Rotating plate; 16. Block; 17. Fixed ring; 18. Connecting hole; 19. Heat sink; 20. Second pipeline; 21. Rack; 22. Gear; 23. Protective cover; 24. Ventilation fan; 25. Hinge. DETAILED DESCRIPTION

[0037] 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.

[0038] Reference Figure 1 , Figure 2 and Figure 4 The utility model provides an embodiment: a heat-insulating butterfly valve for high-temperature fluid, comprising a first pipeline 1, the top end of the first pipeline 1 is connected with a connecting pipe 3, the top end of the connecting pipe 3 is connected with a connecting cover 4, the top end of the inner wall of the connecting cover 4 is rotatably connected with a ventilation fan 24, a fixed cover 5 is arranged on the left side of the connecting cover 4, a motor 6 is fixedly connected to the left side of the fixed cover 5, the output end of the motor 6 passes through the fixed cover 5 and is fixedly connected with a first rotating rod 7, the right side of the first rotating rod 7 is fixedly connected with a first bevel gear 8, the middle part of the top end of the connecting pipe 3 is rotatably connected with a second bevel gear 9, and the second bevel gear 9 is connected with The first bevel gear 8 is meshed and connected, the bottom of the second bevel gear 9 passes through the connecting pipe 3 and is fixedly connected to the second rotating rod 10, the outer side of the second rotating rod 10 is fixedly connected to the hollow butterfly valve 11, and the outer side of the first pipeline 1 is provided with an opening and closing mechanism 2; the fixed cover 5 is fixedly connected to the adjacent side of the connecting cover 4 with a heat dissipation cover 19, and the middle part of the outer wall of the second rotating rod 10 is fixedly connected to a plurality of heat dissipation plates 14; the bottom of the first pipeline 1 is connected to a bearing 12, the bottom of the second bevel gear 9 passes through the hollow butterfly valve 11 and is rotatably connected to the bearing 12, and the outer bottom of the second rotating rod 10 is fixedly connected to a sealing ring 13;

[0039] Specifically, starting the motor 6 can drive the first rotating rod 7 and the first bevel gear 8 thereon to rotate, and drive the second bevel gear 9 and the second rotating rod 10 to rotate through meshing transmission, thereby driving the second rotating rod 10 and the hollow butterfly valve 11 thereon to rotate along the bearing 12 in the first pipeline 1. When the hollow butterfly valve 11 is closed, the high-temperature fluid will contact it. At this time, through the hollow characteristics of the hollow butterfly valve 11 itself, an air wall can be formed inside to keep the fluid inside the device warm, and at the same time, the heat can be reduced. The transfer of heat through the second rotating rod 10 and the first rotating rod 7 affects the operation of the motor 6. At the same time, the second rotating rod 10 and the first rotating rod 7 can reduce the heat transfer. The moving rod 10 and the first rotating rod 7 can also increase the transmission distance and reduce the heat transferred to the motor 6; and because the hollow butterfly valve 11 will come into contact with the high-temperature fluid when closing the valve, the air inside it will be heated at this time. At this time, the hot and cold air inside and outside the device can be exchanged by rotating the ventilation fan 24 to avoid the accumulation of heat therein and cause damage to the second rotating rod 10 and the first rotating rod 7, and the connection between the bearing 12 and the second rotating rod 10 can be sealed by the sealing ring 13, so that it can insulate the fluid while cooling the transmission structure composed of the second rotating rod 10 and the first rotating rod 7.

[0040] Reference Figure 1 , Figure 3 and Figure 4 The opening and closing mechanism 2 includes a rotating ring 201, which is rotatably connected to the rear side of the first pipe 1. A reserved opening 202 is provided on the outer side of the rotating ring 201. A positioning cover 203 is connected to the left side of the reserved opening 202. A sealing cover 204 is connected to the left side of the positioning cover 203. A switch 205 is fixedly connected to the left side of the sealing cover 204. A positioning plate 206 is fixedly connected to the bottom left side of the sealing cover 204. A U-shaped rod 207 is connected to the inner side of the positioning plate 206. The top right side of the U-shaped rod 207 penetrates the sealing cover 204 and is fixedly connected to a sealing pad 208. A ball shaft 209 is fixedly connected to the left side of the top of the plate 206, a spring 210 is arranged on the left side of the outer wall of the U-shaped rod 207, the top of the spring 210 is fixedly connected to the ball shaft 209, and the other end of the spring 210 is fixedly connected to the top of the positioning plate 206; a shield 23 is arranged on the outside of the switch 205, a hinge 25 is fixedly connected to the outer top of the shield 23, and the shield 23 is rotatably connected to the sealing cover 204 through the hinge 25, and the air permeability of the connecting pipe 3 and the connecting cover 4 can be improved through the heat dissipation cover 19, and the cooling speed of the second rotating rod 10 can be improved through the heat dissipation plate 14;

[0041] Specifically, when the hollow butterfly valve 11 is closed, the fluid will accumulate in the rotating ring 201, and when the liquid level accumulates to the reserved opening 202, it will flow into the sealing cover 204 through the positioning cover 203. The fluid flowing into the sealing cover 204 will drive the sealing gasket 208 to move downward along the inside of the sealing cover 204 by its own gravity. At this time, the sealing cover 204 will simultaneously drive the U-shaped rod 207 to move downward. Moving the U-shaped rod 207 will drive the ball shaft 209 on the top left side thereof to move. When the ball shaft 209 moves, it will toggle the switch 205, so that The switch 205 starts the motor 6 through an electrical connection to open the hollow butterfly valve 11 to allow the fluid to pass. When the fluid is discharged, the spring 210, which is squeezed by the downward movement of the ball shaft 209, will lift the ball shaft 209 through elastic potential energy, so that it can toggle the switch 205 again to turn off the motor 6 and simultaneously drive the U-shaped rod 207 and the sealing gasket 208 to reset, so that the fluid remaining in the sealing cover 204 can be pushed out. The protective cover 23 can be opened and closed by the hinge 25. The closed protective cover 23 can protect the switch 205 from being accidentally touched.

[0042] Reference Figure 1 and Figure 2 The left side of the first pipe 1 is rotatably connected to a gear 22, the left side of the rotating ring 201 is fixedly connected to a rack 21, and the rack 21 is meshed with the gear 22; the top left side of the first pipe 1 is rotatably connected to a rotating plate 15, and the bottom left side of the rotating plate 15 is fixedly connected to a block 16, and the block 16 is engaged with the gear 22;

[0043] Specifically, the rotating gear 22 can drive the rack 21 to move through meshing transmission, and the moving rack 21 can drive the rotating ring 201 thereon to rotate to adjust the position of the reserved opening 202 to control the depth of the liquid level that triggers the opening and closing mechanism 2. By rotating the rotating plate 15 to drive the block 16 thereon to engage with the gear 22, the rotation of the gear 22 can be limited to fix the position of the reserved opening 202.

[0044] Reference Figure 1 and Figure 4 The rear side of the rotating ring 201 is rotatably connected to the second pipe 20, and the second pipe 20 and the outer side of the first pipe 1 are fixedly connected to the fixing ring 17, and the outer sides of the two fixing rings 17 are provided with a plurality of connecting holes 18;

[0045] Specifically, by fixing the threaded member in the connection hole 18 on the fixing ring 17, the device can be easily fixed to the pipeline. By the rotational connection between the second pipeline 20 and the rotating ring 201, the rotation of the rotating ring 201 can be fixed to the pipeline at both ends of the device without affecting the rotation of the rotating ring 201.

[0046] Working principle: Before using the device, first start the motor 6 to drive the first rotating rod 7 and the first bevel gear 8 on its right side to rotate. Rotating the first bevel gear 8 can drive the second bevel gear 9 and the second rotating rod 10 at its bottom to rotate through meshing transmission. When the second rotating rod 10 is rotated, the hollow butterfly valve 11 can be driven to rotate in the first pipeline 1 to form a butterfly valve structure to control the flow of fluid. The above structure can increase the contact distance between the motor 6 and the high-temperature fluid to reduce the damage that the high temperature may cause to the motor 6. Since the connecting cover 4, the connecting pipe 3 and the hollow in the hollow butterfly valve 11 are interconnected, when the ventilation fan 24 rotates, Air flows through it, and the circulating air flow can alleviate the impact of high temperature on the mechanical structure in the device, thereby increasing the service life of the device, and when the device closes the valve, the liquid level will rise due to the accumulation of the fluid, and when the liquid level rises to the reserved opening 202, the fluid will flow into the sealing cover 204, and the fluid entering the sealing cover 204 will squeeze the sealing gasket 208 through its weight, exerting pressure on the U-shaped rod 207 and causing it to drive the ball shaft 209 to move downward. When moving, the ball shaft 209 will toggle the switch 205 to start the motor 6 to open the valve, so as to detect the degree of fluid accumulation according to the horizontal plane and automatically open the valve, thereby improving the practicability of the device.

[0047] 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. A heat-insulating butterfly valve for high-temperature fluid, comprising a first pipeline (1), characterized in that: The top end of the first pipe (1) is connected to a connecting pipe (3), the top end of the connecting pipe (3) is connected to a connecting cover (4), the top end of the inner wall of the connecting cover (4) is rotatably connected to a ventilation fan (24), a fixed cover (5) is provided on the left side of the connecting cover (4), a motor (6) is fixedly connected to the left side of the fixed cover (5), the output end of the motor (6) passes through the fixed cover (5) and is fixedly connected to a first rotating rod (7), the right side of the first rotating rod (7) is fixedly connected to a first bevel gear (8), the middle part of the top end of the connecting pipe (3) is rotatably connected to a second bevel gear (9), the second bevel gear (9) is meshedly connected to the first bevel gear (8), the bottom of the second bevel gear (9) passes through the connecting pipe (3) and is fixedly connected to a second rotating rod (10), the outer side of the second rotating rod (10) is fixedly connected to a hollow butterfly valve (11), and the outer side of the first pipe (1) is provided with an opening and closing mechanism (2).

2. A heat-insulated butterfly valve for high-temperature fluid according to claim 1, characterized in that: The opening and closing mechanism (2) comprises a rotating ring (201), the rotating ring (201) being rotatably connected to the rear side of the first pipe (1), a reserved opening (202) being provided on the outer side of the rotating ring (201), a positioning cover (203) being connected to the left side of the reserved opening (202), a sealing cover (204) being connected to the left side of the positioning cover (203), a switch (205) being fixedly connected to the left side of the sealing cover (204), and a positioning plate (206) being fixedly connected to the left bottom of the sealing cover (204), The inner side of the positioning plate (206) is connected to a U-shaped rod (207), the top right side of the U-shaped rod (207) passes through the sealing cover (204) and is fixedly connected to a sealing gasket (208), the top left side of the positioning plate (206) is fixedly connected to a ball shaft (209), a spring (210) is provided on the left side of the outer wall of the U-shaped rod (207), the top end of the spring (210) is fixedly connected to the ball shaft (209), and the other end of the spring (210) is fixedly connected to the top end of the positioning plate (206).

3. A heat-insulated butterfly valve for high-temperature fluid according to claim 2, characterized in that: A protective cover (23) is arranged on the outside of the switch (205), a hinge (25) is fixedly connected to the outer top of the protective cover (23), and the protective cover (23) is rotatably connected to the sealing cover (204) via the hinge (25).

4. A heat-insulated butterfly valve for high-temperature fluid according to claim 2, characterized in that: The left side of the first pipe (1) is rotatably connected to a gear (22), the left side of the rotating ring (201) is fixedly connected to a rack (21), and the rack (21) is meshingly connected to the gear (22).

5. A heat-insulated butterfly valve for high-temperature fluid according to claim 4, characterized in that: A rotating plate (15) is rotatably connected to the top left side of the first pipe (1), and a clamping block (16) is fixedly connected to the left bottom side of the rotating plate (15), and the clamping block (16) is engaged with the gear (22).

6. The heat-insulated butterfly valve for high-temperature fluid according to claim 2, characterized in that: The rear side of the rotating ring (201) is rotatably connected to a second pipe (20), and the outer sides of the second pipe (20) and the first pipe (1) are fixedly connected to fixing rings (17), and the outer sides of the two fixing rings (17) are each provided with a plurality of connection holes (18).

7. The heat-insulated butterfly valve for high-temperature fluid according to claim 1, characterized in that: A heat dissipation cover (19) is fixedly connected to one side adjacent to the fixed cover (5) and the connecting cover (4), and a plurality of heat dissipation plates (14) are fixedly connected to the middle of the outer wall of the second rotating rod (10).

8. The heat-insulated butterfly valve for high-temperature fluid according to claim 1, characterized in that: The bottom of the first pipe (1) is connected to a bearing (12), the bottom of the second bevel gear (9) passes through the hollow butterfly valve (11) and is rotatably connected to the bearing (12), and the outer bottom of the second rotating rod (10) is fixedly connected to a sealing ring (13).

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