High-temperature-resistant anti-deformation butterfly valve

Abstract

The utility model discloses a high-temperature-resistant anti-deformation butterfly valve, which belongs to the technical field of butterfly valves and comprises a valve body, a valve rod penetrating through the inside of the valve body, a valve plate positioned inside the valve body and fixed on the outer side of the valve rod, an actuator mounted at the top of the valve rod, a sealing groove positioned at the bottom end of the valve body and used for sealing the bottom end of the valve rod, and a sealing cover at the bottom of the sealing groove, a first drainage cavity is formed in the valve rod in the length direction, and the bottom end of the first drainage cavity communicates with the interior of the sealing groove. The first drainage cavity is formed in the valve rod in the length direction, the second drainage cavities are symmetrically formed in the outer side of the valve body, the first drainage cavity and the second drainage cavities are communicated through the sealing grooves, and a water flow circulation loop is formed in cooperation with the guide pipe, the water tank, the water pump, the transfer bin on the top of the valve body and the through hole in the valve rod. And in the using process of the device, the valve body and the valve rod can be cooled at the same time, the anti-deformation effect of the device is improved, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to a butterfly valve, in particular to a high temperature resistant and anti-deformation butterfly valve, belonging to the technical field of butterfly valves. Background Art

[0002] In the prior art, for example, the invention with publication number 202110058374.9 discloses a high-temperature resistant self-cleaning high-temperature butterfly valve. In order to solve the problem that the existing cooling method is relatively single and the cooling effect is low, which not only reduces the high-temperature resistance of the high-temperature butterfly valve, but also reduces the service life of the high-temperature butterfly valve, a water-conducting cavity is opened inside the valve body. When the temperature of the valve body is high, water cooling is used to cool the valve body, which effectively avoids deformation of the valve body and ensures the sealing effect.

[0003] Similar to the above application, there are still some shortcomings:

[0004] During the fluid transportation process, not only the valve body will be deformed, but the valve stem will also expand due to heat. At the same time, the valve stem is subjected to the impact force of the fluid. The expansion of the valve stem will drive the movement of the valve plate, resulting in a gap between the valve plate and the valve seat, affecting the sealing performance of the device.

[0005] Therefore, a high temperature resistant and anti-deformation butterfly valve is designed to optimize the above problems. Utility Model Content

[0006] The main purpose of the utility model is to provide a high-temperature resistant and anti-deformation butterfly valve, by opening a first drainage chamber along the length direction inside the valve stem, and symmetrically opening a second drainage chamber on the outside of the valve body, the first drainage chamber and the second drainage chamber are connected through the sealing groove, and then cooperate with the conduit, water tank, water pump, transfer bin on the top of the valve body and the through hole on the valve stem to form a water circulation loop, so that the device can cool the valve body and the valve stem at the same time during use, improve the anti-deformation effect of the device, and have higher practicality, by opening a perforation between the side edges of the water tank, and providing a first heat sink on the outside of the water tank, and a ring is provided inside the transfer box, drainage is performed during water cooling, and the second heat sink on the outside of the transfer box is used to dissipate heat, thereby accelerating the heat dissipation rate of the circulating water and improving the heat dissipation effect.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A high temperature resistant and deformation-resistant butterfly valve comprises a valve body, a valve stem arranged passing through the interior of the valve body, a valve plate located in the valve body and fixed on the outside of the valve stem, an actuator installed on the top of the valve stem, a sealing groove located at the bottom end of the valve body and sealing the bottom end of the valve stem, and a sealing cover at the bottom of the sealing groove, a first drainage cavity is opened inside the valve stem along the length direction, and the bottom end of the first drainage cavity is communicated with the interior of the sealing groove, a transfer box is provided on the top of the valve body, the valve stem passes through the interior of the transfer box, a through hole is opened on the top end of the outer side of the valve stem, the first drainage cavity is communicated with the interior of the transfer box through the through hole, a second drainage cavity is symmetrically opened inside the valve body, and the bottom ends of the second drainage cavities are all communicated with the interior of the sealing groove, a water tank is provided on the top of the valve body, a conduit is provided between the bottom end of the water tank and the top of the second drainage cavity, a water pump is installed on the top of the outer side of the water tank, and the output end of the water pump is communicated with the interior of the transfer box.

[0009] Preferably, the second drainage cavity is semicircular in shape, and the cross-sectional view of the end surface of the second drainage cavity is rectangular in shape.

[0010] Preferably: a support block is fixed between the bottom end of the water tank and the top of the valve body, and the length of the bottom end of the support block is smaller than the length of the top end.

[0011] Preferably: a perforation is provided between two sides of the water tank, and a first heat sink is provided on the outer side of the water tank.

[0012] Preferably: a collar is fixedly mounted on the inner top of the transfer box, the valve stem passes through the inside of the collar, and the bottom end of the collar is located below the through hole.

[0013] Preferably, the outer side of the transfer box is evenly and horizontally provided with second heat sinks, and the second heat sinks are circular.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a high temperature resistant and anti-deformation butterfly valve, which has a first drainage cavity formed inside the valve stem along the length direction, and a second drainage cavity formed symmetrically outside the valve body. The first drainage cavity and the second drainage cavity are connected through the sealing groove, and then cooperate with the conduit, the water tank, the water pump, the transfer bin on the top of the valve body and the through hole on the valve stem to form a water circulation loop, so that the valve body and the valve stem can be cooled at the same time during use, thereby improving the anti-deformation effect of the device and having higher practicality.

[0016] By opening holes between the sides of the water tank and providing a first heat sink on the outside of the water tank, a collar is provided inside the transfer box to drain water during water cooling, and a second heat sink on the outside of the transfer box is used to dissipate heat, thereby accelerating the heat dissipation rate of the circulating water and improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a front cross-sectional view of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3 It is a top cross-sectional view of the utility model;

[0020] Figure 4 For the utility model Figure 1 Enlarged view of point A in the middle.

[0021] In the figure: 1. valve body; 2. valve stem; 3. valve plate; 4. actuator; 5. sealing groove; 6. sealing cover; 7. first drainage chamber; 8. transfer box; 9. through hole; 10. second drainage chamber; 11. water tank; 12. conduit; 13. water pump; 14. collar. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0023] like Figure 1-Figure 4 As shown, this embodiment provides a high temperature resistant and anti-deformation butterfly valve, including a valve body 1, a valve stem 2 that runs through the valve body 1, a valve plate 3 that is located inside the valve body 1 and fixed on the outside of the valve stem 2, an actuator 4 installed on the top of the valve stem 2, a sealing groove 5 that is located at the bottom end of the valve body 1 and seals the bottom end of the valve stem 2, and a sealing cover 6 at the bottom of the sealing groove 5, a first drainage cavity 7 is opened inside the valve stem 2 along the length direction, and the bottom end of the first drainage cavity 7 is communicated with the inside of the sealing groove 5, a transfer box 8 is provided on the top of the valve body 1, and the valve The rod 2 passes through the interior of the transfer box 8, and a through hole 9 is opened at the top end of the outer side of the valve stem 2. The first drainage chamber 7 is communicated with the interior of the transfer box 8 through the through hole 9. The second drainage chamber 10 is symmetrically opened inside the valve body 1. The bottom ends of the second drainage chambers 10 are communicated with the interior of the sealing groove 5. A water tank 11 is arranged on the top of the valve body 1. A conduit 12 is arranged between the bottom end of the water tank 11 and the top of the second drainage chamber 10. A water pump 13 is installed on the top of the outer side of the water tank 11, and the output end of the water pump 13 is communicated with the interior of the transfer box 8.

[0024] The overall working principle is: when controlling the delivery of high-temperature media, start the water pump 13 to inject the water in the water tank 11 into the transfer box 8, and then the cooling water passes through the through hole 9 and the first drainage chamber 7 into the valve stem 2 to cool the valve stem 2, and then the cooling water enters the sealing groove 5, and then takes away the heat on the surface of the valve body 1 through the second drainage chamber 10, and then flows back to the water tank 11 through the conduit 12. The cooling water completes a single cycle of circulation, and the cooling operation is continuously performed. After being discharged from the drainage chamber, the heat is dissipated to the outside.

[0025] In this embodiment, the second drainage cavity 10 is semicircular in shape, and the cross-sectional view of the end surface of the second drainage cavity 10 is rectangular in shape.

[0026] Partial working principle: The provision of the semicircular second drainage cavity 10 increases the contact area between the second drainage cavity 10 and the valve body 1, thereby providing a cooling effect on the valve body 1 during use.

[0027] In this embodiment, a support block is fixed between the bottom end of the water tank 11 and the top of the valve body 1, and the length of the bottom end of the support block is smaller than the length of the top end.

[0028] Local working principle: Since the surface of the valve body 1 has a certain temperature and the contact area of ​​the bottom end of the support block is low, the heat transfer effect is reduced, preventing the heat of the valve body 1 from being directly transferred to the inside of the water tank 11.

[0029] In this embodiment, through holes are provided between two sides of the water tank 11 , and a first heat sink is provided on the outer side of the water tank 11 .

[0030] Partial working principle: After the circulating water enters the water tank 11, the perforations and the first heat sink can increase the contact area between the heat and the outside world, thereby increasing the heat dissipation efficiency of the circulating water during use.

[0031] In this embodiment, a collar 14 is fixedly mounted on the inner top of the transfer box 8 , the valve stem 2 passes through the inside of the collar 14 , and the bottom end of the collar 14 is located below the through hole 9 .

[0032] Partial working principle: After the circulating water enters the interior of the transfer box 8, the setting of the collar 14 can increase the residence time of the circulating water in the transfer box 8, and the transfer box 8 is used to dissipate the heat of the circulating water.

[0033] In this embodiment, the outer side of the transfer box 8 is evenly and horizontally provided with second heat sinks, and the second heat sinks are circular.

[0034] Partial working principle: The provision of the second heat sink can improve the heat dissipation effect of the circulating water after passing through the transfer box 8.

[0035] The above is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A high temperature resistant and anti-deformation butterfly valve, comprising a valve body (1), a valve stem (2) penetrating the interior of the valve body (1), a valve plate (3) located inside the valve body (1) and fixed to the outside of the valve stem (2), an actuator (4) mounted on the top of the valve stem (2), a sealing groove (5) located at the bottom end of the valve body (1) and sealing the bottom end of the valve stem (2), and a sealing cover (6) at the bottom of the sealing groove (5), characterized in that: A first drainage chamber (7) is provided inside the valve stem (2) along the length direction, and the bottom end of the first drainage chamber (7) is communicated with the inside of the sealing groove (5). A transfer box (8) is provided on the top of the valve body (1), and the valve stem (2) passes through the inside of the transfer box (8). A through hole (9) is provided on the top of the outer side of the valve stem (2), and the first drainage chamber (7) is communicated with the inside of the transfer box (8) through the through hole (9). A second drainage chamber (10) is symmetrically provided inside the valve body (1), and the bottom ends of the second drainage chambers (10) are communicated with the inside of the sealing groove (5). A water tank (11) is provided on the top of the valve body (1), and a conduit (12) is provided between the bottom end of the water tank (11) and the top of the second drainage chamber (10). A water pump (13) is installed on the top of the outer side of the water tank (11), and the output end of the water pump (13) is communicated with the inside of the transfer box (8).

2. A high temperature resistant and anti-deformation butterfly valve according to claim 1, characterized in that: The shape of the second drainage cavity (10) is semicircular, and the cross-sectional view of the end surface of the second drainage cavity (10) is rectangular.

3. The high temperature resistant and anti-deformation butterfly valve according to claim 1, characterized in that: A support block is fixed between the bottom end of the water tank (11) and the top of the valve body (1), and the length of the bottom end of the support block is smaller than the length of the top end.

4. The high temperature resistant and anti-deformation butterfly valve according to claim 1, characterized in that: A perforation is provided between the two sides of the water tank (11), and a first heat sink is provided on the outer side of the water tank (11).

5. A high temperature resistant and anti-deformation butterfly valve according to claim 1 or 4, characterized in that: A collar (14) is fixedly mounted on the inner top of the transfer box (8), the valve stem (2) passes through the inside of the collar (14), and the bottom end of the collar (14) is located below the through hole (9).

6. The high temperature resistant and anti-deformation butterfly valve according to claim 5, characterized in that: Second heat sinks are evenly and horizontally arranged on the outer side of the transfer box (8), and the second heat sinks are circular.

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