A heating butterfly valve

Abstract

This utility model discloses a heated butterfly valve, comprising: a valve body with a medium flow channel in the middle and a first groove on the outer wall, the first groove being spaced apart from the medium flow channel; a valve shaft movably connected to the valve body; a valve plate assembly disposed in the medium flow channel and connected to the valve shaft, rotating together with the valve shaft to open or close the medium flow channel; and an electric heating element connected to the outer wall of the valve body, with a portion of the electric heating element disposed in the first groove; thereby overcoming the technical problems of relatively complex structure, inconvenient processing and manufacturing, and relatively high probability of medium leakage.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a heated butterfly valve. Background Technology

[0002] A butterfly valve is a type of regulating valve whose closing element (valve disc or butterfly plate) is disc-shaped. It opens and closes by rotating around the valve shaft axis, thereby precisely controlling the flow rate. Its core working principle is to use a disc-shaped butterfly plate to rotate around the valve shaft axis in the valve body, changing the angle between the butterfly plate and the valve body channel, thereby adjusting the medium flow or cutting off the medium flow. It is widely used in water treatment, petrochemical, metallurgy, semiconductor and other industries. In semiconductor manufacturing processes such as chemical vapor deposition (CVD) and physical vapor deposition (PVD), heated butterfly valves are used to prevent gas condensation, ensure stable gas delivery in a gaseous state, and precisely regulate the flow rate to make the deposition process uniform and stable, thus guaranteeing the quality and consistency of thin film deposition. They are also used to prevent components in the exhaust gas from condensing and accumulating in the pipeline, avoiding pipeline blockage, and to precisely control the exhaust gas emission flow rate and speed to effectively treat the exhaust gas and reduce environmental pollution. However, in existing heated butterfly valves, the electric heating element is located on the inner side of the valve body to heat the valve body and valve plate. Although this structure can heat up faster, it requires holes to be made in the valve body to connect the wiring and requires sealing treatment. The structure is relatively complex, inconvenient to process and manufacture, and there is a risk of media leakage. Utility Model Content

[0003] In view of the above-mentioned shortcomings in the related technologies, the purpose is to provide a heated butterfly valve to solve the technical problems of relatively complex structure, inconvenient processing and manufacturing, and relatively high probability of medium leakage in the related technologies. The technical solution to achieve the objective is: a heated butterfly valve, comprising: The valve body has a medium flow channel in the middle position and a first groove on the outer wall, with the first groove and the medium flow channel being spaced apart. The valve shaft is movably connected to the valve body; A valve plate assembly is disposed in the medium flow channel and connected to the valve shaft. It rotates together with the valve shaft to open or close the medium flow channel. And an electric heating element, connected to the outer wall of the valve body, and a portion of the electric heating element is disposed in the first groove.

[0004] Furthermore: the valve body includes: a main body portion, the main body portion having a circular structure, a plane and the first groove on the outer circle, the first groove intersecting the plane, and the valve shaft being movably connected to the main body portion; Two protrusions are symmetrically connected to the sidewall of the main body, forming the medium flow channel together with the main body, and a second groove is formed between the protrusions and the main body.

[0005] Furthermore, the maximum outer diameter of the protrusion is smaller than the outer diameter of the main body portion.

[0006] Furthermore, the main body also has a positioning blind hole, which starts from the plane, is perpendicular to the plane, communicates with the medium flow channel, and is used to connect the valve shaft.

[0007] Furthermore: the valve shaft passes through the plane, through the medium flow channel, and is movably connected to the positioning blind hole.

[0008] Furthermore: the valve plate assembly includes: a valve plate, which is a circular plate structure, disposed in the medium flow channel and connected to the valve shaft, and the outer circle of the valve plate has a third groove; A sealing ring is disposed in the third groove to form a seal with the valve body.

[0009] Furthermore, it also includes: a plurality of first connecting bolts connecting the valve shaft and the valve plate.

[0010] Furthermore: the electric heating element includes: an electric heating tube, arranged along the first groove; And a thermostat assembly, which is disposed on the outer wall of the valve body and electrically connected to the electric heating tube.

[0011] Furthermore, it also includes a baffle plate disposed on the valve body to block the electric heating tube.

[0012] Furthermore, it also includes several second connecting bolts, which are connected to the valve body and press down the baffle.

[0013] The above technical solution has the following beneficial effects: A heated butterfly valve, compared with related technologies, is provided with a valve body, a valve shaft, a valve plate assembly and an electric heating element; The valve shaft is linked to the rotation of the valve plate assembly, which opens or closes the medium flow channel on the valve body, thus controlling the flow of the medium. The electric heating element is connected to the outer wall of the valve body, with part of it located in the first groove. Compared to the element being located on the inner side of the valve body, this not only enables heating but also simplifies the structure, makes manufacturing easier, and reduces the chance of medium leakage. This overcomes the technical problems of relatively complex structure, inconvenient processing and manufacturing, and relatively high probability of media leakage, and achieves the technical effect of relatively simple structure, relatively convenient processing and manufacturing, and reduced probability of media leakage, thus having practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall assembly structure; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 for Figure 2 A partial sectional view; Figure 4 This is a schematic diagram of the valve body structure; Figure 5 This is a partial sectional view of the valve body; Figure 6 This is a schematic diagram of the valve plate structure; Figure 7 This is a partial sectional view of the valve plate; In the diagram: 10. Valve body, 11. Medium flow channel, 12. First groove, 10-1. Main body, 10-11. Plane, 10-12. Positioning blind hole, 10-2. Protrusion, 10-21. Second groove, 20. Valve shaft, 30. Valve plate assembly, 30-1. Valve plate, 30-11. Third groove, 30-2. Sealing ring, 40. Electric heating element, 40-1. Electric heating tube, 40-2. Thermostat assembly, 50. First connecting bolt, 60. Baffle plate, 70. Second connecting bolt. Detailed Implementation

[0015] To make the content easier to understand, the following detailed description is provided with reference to specific embodiments and accompanying drawings; A heated butterfly valve solves the technical problems of relatively complex structure, inconvenient processing and manufacturing, and relatively high probability of media leakage in related technologies. It can be manufactured and used, achieving the positive effects of relatively simple structure, relatively convenient processing and manufacturing, and reduced probability of media leakage. The overall concept is as follows:

[0016] Implementation

[0017] like Figure 1 , Figure 2 , Figure 3 As shown; a heated butterfly valve, comprising: The valve body 10 has a medium flow channel 11 in the middle position and a first groove 12 on the outer wall, with the first groove 12 and the medium flow channel 11 spaced apart. Valve shaft 20 is movably connected to the valve body 10; The valve plate assembly 30 is disposed in the medium flow channel 11 and connected to the valve shaft 20. It rotates together with the valve shaft 20 to open or close the medium flow channel 11. And an electric heating element 40 is connected to the outer wall of the valve body 10, and a portion of the electric heating element 40 is disposed at the first groove 12; Specifically, during implementation, the valve shaft 20 rotates in conjunction with the valve plate assembly 30, and the valve plate assembly 30 opens or closes the medium flow channel 11 on the valve body 10, thereby controlling the flow of the medium. The electric heating element 40 is connected to the outer wall of the valve body 10, with a portion located in the first groove 12. Compared to the element being located on the inner side of the valve body, this not only enables heating but also has a relatively simple structure, is easier to manufacture, and reduces the probability of medium leakage. Another implementation method: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown; in implementation, the valve body 10 includes: a main body 10-1, the main body 10-1 having a circular shape, with a plane 10-11 and a first groove 12 on the outer circle, the first groove 12 intersecting the plane 10-11, and the valve shaft 20 movably connected to the main body 10-1; and two protrusions 10-2, symmetrically connected to the sidewalls of the main body 10-1, forming the medium flow channel 11 together with the main body 10-1, and a second groove 10-21 forming between the protrusions 10-2 and the main body 10-1; The valve body 10 is made of stainless steel, which has relatively high strength and relatively good thermal conductivity; The main body 10-1 and the protrusion 10-2 are integrally formed, with a regular shape, making them relatively easy to process and manufacture. The protrusion 10-2 has a roughly "T" shaped structure, forming a second groove 10-21 between it and the main body 10-1. This facilitates connection with the OK clip in the prior art using the protrusion 10-2, making assembly relatively convenient. The medium flow channel 11 is provided to facilitate the smooth flow of the medium; The first groove 12 is provided, which facilitates the arrangement of the electric heating tubes 40-1, making it relatively aesthetically pleasing and relatively safe. The plane 10-11 is provided to facilitate the connection of the driving components, such as electric motors, pneumatic rotary motors, etc., which are used to link the rotation of the valve shaft 20, making assembly relatively convenient. The maximum outer diameter of the protrusion 10-2 (the maximum outer diameter refers to the diameter at the maximum outer circle of the protrusion 10-2) is smaller than the outer diameter of the main body 10-1 (the outer diameter refers to the outer circle diameter of the main body 10-1). Controlling the outer diameter results in a more aesthetically pleasing appearance and facilitates the connection of the OK clip at the protrusion 10-2, making assembly relatively convenient. The main body 10-1 also has a positioning blind hole 10-12, which starts from the plane 10-11, is perpendicular to the plane 10-11, and communicates with the medium flow channel 11 for connecting the valve shaft 20; the positioning blind hole 10-12 is a stepped hole, which is beneficial for setting the valve shaft 20 and allows the valve shaft 20 to rotate freely; Another implementation method: like Figure 1 , Figure 2 , Figure 3 As shown; in practice, the valve shaft 20 is inserted through the plane 10-11, passes through the medium flow channel 11, and is movably connected to the positioning blind hole 10-12. Assembly is relatively convenient, and the rotation of the valve shaft 20 is relatively smooth. Another implementation method: like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown; in implementation, the valve plate assembly 30 includes: a valve plate 30-1, which is a circular plate structure, disposed in the medium flow channel 11 and connected to the valve shaft 20, and the outer circle of the valve plate 30-1 has a third groove 30-11; and a sealing ring 30-2, disposed in the third groove 30-11, for forming a seal with the valve body 10; The valve plate 30-1 has a circular plate structure and a regular shape, making it relatively easy to process and manufacture. The third groove 30-11 is provided, which is a circular structure, which is conducive to the installation of the sealing ring 30-2; The sealing ring 30-2 is an O-ring. When the valve plate assembly 30 is rotated in conjunction with the valve shaft 20 and the valve plate assembly 30 closes the medium flow channel 11, the sealing ring 30-2 contacts the valve body 10, ensuring the sealing performance and reducing the probability of medium leakage. It also includes: a plurality of first connecting bolts 50, which connect the valve shaft 20 and the valve plate 30-1; the first connecting bolts 50 are internal hex bolts, which pass through the through holes on the valve shaft 20 and are threadedly connected to the valve plate 30-1 to lock the valve shaft 20 and the valve plate 30-1. Another implementation method: like Figure 1 , Figure 2 , Figure 3As shown; in implementation, the electric heating element 40 includes: an electric heating tube 40-1, arranged along the first groove 12; and a temperature controller assembly 40-2, disposed on the outer wall of the valve body 10, and electrically connected to the electric heating tube 40-1; The electric heating element 40-1 and the temperature controller assembly 40-2 are common structures in the prior art. For example, the temperature controller assembly 40-2 includes a temperature sensor, a temperature controller, and a relay. The temperature sensor detects the ambient or medium temperature. When the temperature reaches the set threshold, the temperature controller triggers the relay (e.g., a solid-state relay) to disconnect the power supply to the electric heating element 40-1. When the temperature is lower than the threshold, the power is reconnected, thus achieving constant temperature control and ensuring the heating effect. Furthermore, since the electric heating element 40 is located on the outer wall of the valve body 10, it is relatively easy to process and manufacture, thus reducing the probability of medium leakage; Another implementation method: like Figure 1 , Figure 2 , Figure 3 As shown; in practice, it also includes: a baffle 60, which is disposed on the valve body 10 to block the electric heating tube 40-1, restricting the position of the electric heating tube 40-1, which is relatively aesthetically pleasing and reduces heat loss; It also includes: several second connecting bolts 70, which are connected to the valve body 10 and press the baffle 60. The second connecting bolts 70 are internal hex bolts, which pass through the through holes on the baffle 60 and are threaded to the valve body 10 to lock the baffle 60 and the valve body 10. The structure has relatively good reliability. In the description, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, and are only for the convenience or simplification of the description, rather than indicating a specific orientation that must be present; the operation process described in the embodiments is not an absolute usage step, and corresponding adjustments can be made in actual use; Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art; the words “first,” “second,” and similar terms used in the specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components, and similarly, the words “a” or “a” and similar terms do not determine a quantity limitation, but rather indicate the presence of at least one, as determined by the content of the embodiments; The above description is only a preferred embodiment, but the scope of protection is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the disclosed technology, based on the technical solution and inventive concept, should be included within the scope of protection.

Claims

1. A heated butterfly valve, characterized in that, include: The valve body has a medium flow channel in the middle position and a first groove on the outer wall, with the first groove and the medium flow channel being spaced apart. The valve shaft is movably connected to the valve body; A valve plate assembly is disposed in the medium flow channel and connected to the valve shaft. It rotates together with the valve shaft to open or close the medium flow channel. And an electric heating element, connected to the outer wall of the valve body, and a portion of the electric heating element is disposed in the first groove.

2. The heating butterfly valve according to claim 1, characterized in that: The valve body includes: a main body, the main body having a circular shape, a plane and the first groove on the outer circle, the first groove intersecting the plane, and the valve shaft being movably connected to the main body; Two protrusions are symmetrically connected to the sidewall of the main body, forming the medium flow channel together with the main body, and a second groove is formed between the protrusions and the main body.

3. A heated butterfly valve according to claim 2, characterized in that: The maximum outer diameter of the protrusion is smaller than the outer diameter of the main body.

4. A heated butterfly valve according to claim 2, characterized in that: The main body also has a positioning blind hole, which starts from the plane, is perpendicular to the plane, communicates with the medium flow channel, and is used to connect the valve shaft.

5. A heated butterfly valve according to claim 4, characterized in that: The valve shaft passes through the plane, through the medium flow channel, and is movably connected to the positioning blind hole.

6. A heated butterfly valve according to claim 1 or 5, characterized in that: The valve plate assembly includes: a valve plate, which is a circular plate structure, disposed in the medium flow channel and connected to the valve shaft, and the outer circle of the valve plate has a third groove; A sealing ring is disposed in the third groove to form a seal with the valve body.

7. A heated butterfly valve according to claim 6, characterized in that: Also includes: Several first connecting bolts connect the valve shaft and the valve plate.

8. A heated butterfly valve according to claim 1 or 2, characterized in that: The electric heating element includes: an electric heating tube arranged along the first groove; And a thermostat assembly, which is disposed on the outer wall of the valve body and electrically connected to the electric heating tube.

9. A heating butterfly valve according to claim 8, characterized in that: Also includes: A baffle plate is provided on the valve body to block the electric heating tube.

10. A heating butterfly valve according to claim 9, characterized in that: Also includes: Several second connecting bolts are connected to the valve body and press down the baffle.

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