Butterfly valve with anti-freezing structure

Abstract

The utility model discloses a butterfly valve with an anti-freezing structure, which relates to the technical field of butterfly valves and comprises a valve body, flanges are fixedly connected to the outer sides of two ends of the valve body, the valve body is mounted in a water pipeline through the flanges, and a power supply module is fixedly connected to the inside of the valve body. The side, close to the valve body, of the power supply module is fixedly connected with two electric heating wires, two symmetrically-distributed heating holes are formed in the valve body, and the two heating holes are spirally distributed in the valve body. According to the butterfly valve with the anti-freezing structure, the fluid in the valve body can be heated by the electric heating wire when being crystallized or frozen, and the electric heating wire is distributed on the outer side of the valve body in an S-shaped structure, so that the fluid in the valve body can be uniformly heated, and the fluid is crystallized or frozen and melted; and meanwhile, when the fluid flows in the valve body at a low temperature, the fluid flowing through the interior of the valve body is heated through the electric heating wire so as to be prevented from being frozen again in a subsequent pipeline.

Description

Technical Field

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

[0002] A butterfly valve is a type of valve that uses a disc-shaped switching element that rotates 90 degrees to open, close, and regulate fluid flow. It gets its name from the butterfly wing-like shape of its switching element. It is widely used in various fluid pipelines to achieve rapid fluid shut-off and flow control.

[0003] When existing butterfly valves are used in low-temperature environments, the fluid inside is prone to crystallization or even complete freezing, leading to blockage inside the valve body.

[0004] To overcome the aforementioned deficiencies, Chinese patent (publication number: CN221880243U) discloses an antifreeze butterfly valve, comprising a flange, an insulation sleeve, a first vacuum insulation chamber, and a second vacuum insulation chamber. The flange is fitted with an insulation sleeve on its outer side, and the flange contains the first and second vacuum insulation chambers. A sealing butterfly plate is located inside the flange, and a fixing component is fixedly connected inside the sealing butterfly plate. The fixing component is connected to a sleeve, and the insulation sleeve is made of polyurethane. With this butterfly valve, the polyurethane insulation sleeve and the vacuum insulation chamber inside the flange effectively isolate the butterfly valve from the influence of low external temperatures, ensuring normal operation, preventing freezing and leakage, and improving the valve's service life and safety.

[0005] The aforementioned existing technology can effectively isolate the low temperature of the outside through the vacuum insulation chamber, preventing the butterfly valve from freezing and cracking and leaking. In actual use, the butterfly valve is generally installed in the pipeline. In a low temperature environment, the liquid inside the entire pipeline is at a low temperature. At this time, the low temperature liquid inside the pipeline will exchange heat with the low temperature liquid inside the valve body, which will cause the liquid inside the valve body to crystallize or freeze. Insulating only the valve body has a poor antifreeze effect. Utility Model Content

[0006] The purpose of this utility model is to provide a butterfly valve with an antifreeze structure to solve the problem in the above-mentioned background technology that in a low-temperature environment, the liquid inside the entire pipeline is in a low-temperature state. At this time, the low-temperature liquid inside the pipeline will exchange heat with the low-temperature liquid inside the valve body, which will cause the liquid inside the valve body to crystallize or freeze. The antifreeze effect is poor when only the valve body is insulated.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a butterfly valve with an antifreeze structure, comprising a valve body, wherein flanges are fixedly connected to both outer sides of the valve body, and the valve body is installed in a water pipeline through the flanges;

[0008] A power supply module is fixedly connected inside the valve body, and two heating wires are fixedly connected to the side of the power supply module near the valve body. The valve body has two symmetrically distributed heating holes, and both heating holes are spirally distributed inside the valve body. The heating holes are fixedly connected to the heating wires.

[0009] Preferably, the valve body has a lower mounting hole in the middle of the bottom side and an upper mounting hole in the middle of the top, with the upper end of the upper mounting hole extending to the top of the valve body, and a mounting box is fixedly connected to the top of the upper mounting hole.

[0010] Preferably, a worm gear is rotatably connected inside the mounting box, and a worm is engaged on the outside of the worm gear, with the worm rotatably connected inside the mounting box.

[0011] Preferably, a first bevel tooth is fixedly connected to one end of the worm gear, and a transmission rod is rotatably connected to the top side of the mounting box. A second bevel tooth is fixedly connected to the lower end of the transmission rod, and the second bevel tooth and the first bevel tooth mesh with each other.

[0012] Preferably, the transmission rod is fixedly connected to a rotating handle, and the transmission rod and the worm are vertically distributed, while the rotating handle and the worm wheel are parallel to each other.

[0013] Preferably, a butterfly plate is rotatably connected inside the valve body, and the upper end of the butterfly plate is rotatably connected to the lower end of the upper mounting hole, while the lower end of the butterfly plate is rotatably connected to the lower mounting hole.

[0014] Preferably, a valve stem is fixedly connected to the middle of the upper end of the butterfly plate, and the valve stem is rotatably connected to the inside of the upper mounting hole, and the top of the valve stem is fixedly connected to the bottom of the worm gear.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This butterfly valve has an antifreeze structure. When the fluid inside the valve body crystallizes or freezes, it will be heated by an electric heating wire. Since the electric heating wire is distributed in an S-shape on the outside of the valve body, the fluid inside the valve body can be heated evenly, thereby melting the crystals or freeze inside the fluid. At the same time, when the fluid is flowing inside the valve body at a low temperature, the electric heating wire heats the fluid flowing inside the valve body to prevent it from freezing again in the subsequent pipeline.

[0017] Furthermore, when the butterfly plate is subjected to fluid impact, the butterfly plate will exert a rotational force on the worm gear through the valve stem. Due to the self-locking property between the worm gear and the worm, the rotation angle of the worm gear inside the mounting box is fixed by the worm, thereby fixing the rotation angle of the butterfly plate located inside the valve body, thus preventing the angle of the butterfly plate from changing due to fluid impact. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of the present invention.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve body of this utility model;

[0021] Figure 4 This is a schematic diagram of the mounting box structure of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the mounting box of this utility model;

[0023] Figure 6 This is a schematic diagram of the butterfly plate structure of this utility model.

[0024] In the diagram: 1. Valve body; 2. Flange; 3. Lower mounting hole; 4. Upper mounting hole; 5. Mounting box; 6. Heating hole; 7. Power supply module; 8. Heating wire; 9. Worm gear; 10. Worm; 11. First bevel gear; 12. Transmission rod; 13. Second bevel gear; 14. Valve stem; 15. Butterfly plate; 16. Rotating handle. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: Please refer to Figure 1 - Figure 6 The present invention provides the following technical solution:

[0027] A butterfly valve with an antifreeze structure includes a valve body 1, with flanges 2 fixedly connected to the outer sides of both ends of the valve body 1, and the valve body 1 is installed in a water pipeline through the flanges 2.

[0028] A power supply module 7 is fixedly connected inside the valve body 1, and two heating wires 8 are fixedly connected to the side of the power supply module 7 near the valve body 1. Two symmetrically distributed heating holes 6 are provided inside the valve body 1, and the two heating holes 6 are spirally distributed inside the valve body 1, and the heating holes 6 are fixedly connected to the heating wires 8.

[0029] The valve body 1 has a lower mounting hole 3 in the middle of the bottom inside, and an upper mounting hole 4 in the middle of the top of the valve body 1. The upper end of the upper mounting hole 4 extends to the top of the valve body 1, and a mounting box 5 is fixedly connected to the top of the upper mounting hole 4.

[0030] The mounting box 5 is rotatably connected to a worm gear 9, and a worm 10 is meshed on the outside of the worm gear 9, and the worm 10 is rotatably connected to the inside of the mounting box 5.

[0031] One end of the worm gear 10 is fixedly connected to a first bevel tooth 11, and a transmission rod 12 is rotatably connected to one side of the top of the mounting box 5. The lower end of the transmission rod 12 is fixedly connected to a second bevel tooth 13, and the second bevel tooth 13 and the first bevel tooth 11 mesh with each other.

[0032] The transmission rod 12 is fixedly connected to the rotating handle 16, and the transmission rod 12 and the worm gear 10 are perpendicularly distributed, while the rotating handle 16 and the worm wheel 9 are parallel to each other.

[0033] A butterfly plate 15 is rotatably connected inside the valve body 1, and the upper end of the butterfly plate 15 is rotatably connected to the lower end of the upper mounting hole 4, while the lower end of the butterfly plate 15 is rotatably connected to the lower mounting hole 3.

[0034] Preferably, a valve stem 14 is fixedly connected to the middle of the upper end of the butterfly plate 15, and the valve stem 14 is rotatably connected to the inside of the upper mounting hole 4, and the top of the valve stem 14 is fixedly connected to the bottom of the worm gear 9.

[0035] Example 2: Based on Example 1, its specific working principle is as follows:

[0036] This butterfly valve with an antifreeze structure is first installed in the pipeline and connected to the pipeline through flanges 2 at both ends of the valve body 1. At this time, the fluid inside the pipeline will flow inside the valve body 1, and the butterfly plate 15 will rotate inside the valve body 1 to realize the butterfly valve's operation of opening, closing and regulating fluid flow.

[0037] By rotating the handle 16, the transmission rod 12 at its bottom is driven to rotate. During the rotation of the transmission rod 12, the second bevel tooth 13 at its bottom will rotate inside the mounting box 5. Since the second bevel tooth 13 meshes with the first bevel tooth 11, the rotation of the second bevel tooth 13 will drive the first bevel tooth 11 to rotate with it. The force of the transmission rod 12 and the second bevel tooth 13 on the rotation of the transmission rod 12 is directed vertically, thereby driving the worm gear 10 to rotate inside the mounting box 5. When the worm gear 10 rotates inside the mounting box 5, it will drive the worm wheel 9 to rotate inside the mounting box 5. The rotation of the worm wheel 9 drives the valve stem 14 located inside the upper mounting hole 4 to rotate, thereby driving the butterfly plate 15 to rotate inside the valve body 1.

[0038] When the outer side of the butterfly plate 15 and the inner side of the valve body 1 are completely in contact, a sealing structure will be formed between the butterfly plate 15 and the inner side of the valve body 1, thereby cutting off the fluid inside the valve body 1. When there is a certain gap between the outer side of the butterfly plate 15 and the inner side of the valve body 1, the fluid will flow through the gap between the outer side of the butterfly plate 15 and the inner side of the valve body 1. The larger the gap between the butterfly plate 15 and the first conical tooth 11, the larger the space for the fluid to flow inside, thereby achieving the function of regulating the flow of fluid. When the butterfly plate 15 is impacted by the fluid, the butterfly plate 15 will apply a rotational force to the worm wheel 9 through the valve stem 14. Since the worm wheel 9 and the worm 10 have a self-locking property, the rotation angle of the worm wheel 9 inside the mounting box 5 is fixed by the worm 10, thereby fixing the rotation angle of the butterfly plate 15 located inside the valve body 1, thereby preventing the angle of the butterfly plate 15 from changing due to fluid impact.

[0039] When the fluid flowing through the valve body 1 crystallizes or freezes, the power supply module 7 supplies power to the heating wire 8, causing the heating wire 8 to heat up inside the heating hole 6 and heat the entire valve body 1 through the heating hole 6. At this time, the crystallized or frozen fluid inside the valve body 1 will be heated by the heating wire 8. Since the heating wire 8 is S-shaped and distributed on the outside of the valve body 1, the fluid inside the valve body 1 can be heated evenly, thereby melting the crystallized or frozen fluid inside. At the same time, when the fluid is at a lower temperature flowing inside the valve body 1, the power supply heating wire 8 heats the fluid flowing inside the valve body 1 to prevent it from freezing again in the subsequent pipeline.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A butterfly valve with an antifreeze structure, comprising a valve body (1), wherein flanges (2) are fixedly connected to both outer sides of the valve body (1), and the valve body (1) is installed in a water pipeline through the flanges (2); Its features are: The valve body (1) is fixedly connected to a power supply module (7), and the power supply module (7) is fixedly connected to two heating wires (8) on the side of the valve body (1). The valve body (1) is provided with two symmetrically distributed heating holes (6), and the two heating holes (6) are spirally distributed inside the valve body (1), and the heating holes (6) are fixedly connected to the heating wires (8).

2. A butterfly valve with an antifreeze structure according to claim 1, characterized in that: The valve body (1) has a lower mounting hole (3) in the middle of the bottom inside, and an upper mounting hole (4) in the middle of the top of the valve body (1). The upper end of the upper mounting hole (4) extends to the top of the valve body (1), and a mounting box (5) is fixedly connected to the top of the upper mounting hole (4).

3. A butterfly valve with an antifreeze structure according to claim 2, characterized in that: The mounting box (5) is rotatably connected to a worm gear (9), and a worm (10) is engaged on the outside of the worm gear (9), and the worm (10) is rotatably connected to the inside of the mounting box (5).

4. A butterfly valve with an antifreeze structure according to claim 3, characterized in that: One end of the worm gear (10) is fixedly connected to a first bevel tooth (11), and a transmission rod (12) is rotatably connected to the top side of the mounting box (5). The lower end of the transmission rod (12) is fixedly connected to a second bevel tooth (13), and the second bevel tooth (13) and the first bevel tooth (11) mesh with each other.

5. A butterfly valve with an antifreeze structure according to claim 4, characterized in that: The transmission rod (12) is fixedly connected to a rotating handle (16), and the transmission rod (12) and the worm (10) are vertically distributed, and the rotating handle (16) and the worm wheel (9) are parallel to each other.

6. A butterfly valve with an antifreeze structure according to claim 5, characterized in that: The valve body (1) is rotatably connected to a butterfly plate (15), and the upper end of the butterfly plate (15) is rotatably connected to the lower end of the upper mounting hole (4), and the lower end of the butterfly plate (15) is rotatably connected to the lower mounting hole (3).

7. A butterfly valve with an antifreeze structure according to claim 6, characterized in that: A valve stem (14) is fixedly connected to the middle of the upper end of the butterfly plate (15), and the valve stem (14) is rotatably connected to the inside of the upper mounting hole (4), and the top of the valve stem (14) is fixedly connected to the bottom of the worm gear (9).

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