Corrosion-resistant soft sealing butterfly valve

Abstract

The utility model discloses a corrosion-resistant soft sealing butterfly valve which comprises a valve body, a sealing assembly is arranged in the valve body, the sealing assembly comprises an installation frame fixedly installed in the valve body, a valve plate is arranged in the valve body and located at the inner ring position of the installation frame, a first groove is formed in the inner side of the valve plate, and a second groove is formed in the inner side of the valve plate. A second groove is formed in the periphery of the valve plate, an inflatable elastic sealing ring for improving the sealing performance is arranged in the first groove, an inflation opening is formed in one end of the inflatable elastic sealing ring, and a portable air pump for inflating the inflatable elastic sealing ring is fixedly installed on the periphery of the valve body. The sealing performance of the valve plate during closing can be improved through the portable air pump and the inflatable elastic sealing ring, even if the inflatable elastic sealing ring is abraded, the second groove and the first groove formed in the periphery of the valve plate and the inner wall of the valve body can be filled through inflation expansion, the leakage condition of air or liquid is reduced, and the service life of the valve plate is prolonged. The sealing performance of the valve body is improved.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically a corrosion-resistant soft-seal butterfly valve. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by a disc-shaped closing element (valve disc or butterfly plate) that rotates around a valve shaft to open and close. These valves can control the flow of various types of fluids, including air, water, steam, corrosive media, mud, oil, liquid metals, and radioactive media. They primarily function as shut-off and throttling devices in pipelines. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve opening, closing, or regulation.

[0003] According to the disclosure in CN221880253U, a corrosion-resistant soft-seal butterfly valve includes a valve body, a valve stem, a valve plate, and a pivot connected to each other. The valve stem is driven by a drive assembly. An annular groove is formed on the outer ring of the valve plate, and two sets of symmetrically arranged first and second sealing strips are fixed within the annular groove. The cross-sections of the first and second sealing strips are T-shaped. A pressure groove is formed at one end where the first and second sealing strips meet, and a pressure strip is formed at the other end where the second sealing strip contacts the first sealing strip. The pressure strip is pressed into the pressure groove. An annular positioning groove is formed on the inner wall of the valve body, and the first and second sealing strips are placed within the positioning groove. This invention features anti-corrosion layers on both the internal and external walls, greatly improving the corrosion resistance of the butterfly valve. Furthermore, it allows for partial replacement of damaged sealing strips, significantly reducing costs.

[0004] The aforementioned utility model improves the corrosion resistance of the butterfly valve by setting an anti-corrosion layer, but observation shows... Figure 2 It is known that the radii of the first and second sealing strips on the outer periphery of the valve plate are larger than the inner radius of the valve body. The first and second sealing strips are placed inside the positioning groove, which makes it difficult to open the valve plate. Furthermore, the two sets of sealing strips are fixed by multiple sets of fixing holes, making installation quite troublesome. Utility Model Content

[0005] The purpose of this utility model is to address the problem that the aforementioned utility model improves the corrosion resistance of butterfly valves by setting an anti-corrosion layer, but observation shows that... Figure 2 It is known that the radii of the first and second sealing strips on the outer periphery of the valve plate are larger than the inner radius of the valve body. The first and second sealing strips are placed inside the positioning groove, which makes it difficult to open the valve plate. In addition, the two sets of sealing strips are fixed by multiple sets of fixing holes, which makes the installation more troublesome. To address this problem, a corrosion-resistant soft-seal butterfly valve is provided.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant soft-seal butterfly valve, comprising a valve body, a sealing assembly inside the valve body, the sealing assembly including a mounting bracket fixedly installed inside the valve body, a valve plate inside the valve body, the valve plate being located at the inner ring of the mounting bracket, a first groove being formed on the inner side of the valve plate, a second groove being formed on the outer periphery of the valve plate, an inflatable elastic sealing ring for increasing sealing performance being provided inside the first groove, and an inflation port being formed at one end of the inflatable elastic sealing ring, a portable air pump for inflating the inflatable elastic sealing ring being fixedly installed on the outer periphery of the valve body, an air inlet pipe being fixedly installed at one end of the portable air pump, an air delivery pipe being fixedly installed at one end of the portable air pump, a connecting pipe being fixedly installed at one end of the air delivery pipe, and the connecting pipe passing through the valve body and being threadedly connected and fixed to the inflation port at one end of the inflatable elastic sealing ring.

[0007] As a further improvement of this utility model: the outer periphery of the mounting bracket is provided with a replacement component that is easy for workers to replace. The replacement component includes a through groove evenly arranged around the outer periphery of the mounting bracket, a wedge-shaped locking block that slides inside the through groove, and a locking groove evenly arranged around the inner wall of the valve body that is adapted to the wedge-shaped locking block. A reset spring for resetting the wedge-shaped locking block is fixedly installed inside the through groove.

[0008] As a further embodiment of this utility model: the inner wall of the valve body is provided with a guide groove for the replacement and installation of the mounting bracket, and the guide groove is evenly arranged around the inner wall of the valve body, and the outer periphery of the mounting bracket is evenly fixed with a guide block that is slidably adapted to the guide groove.

[0009] As a further embodiment of this utility model: the valve body is fixedly installed with mounting flanges to facilitate valve body installation, and the mounting flanges are symmetrically fixedly installed at both ends of the valve body.

[0010] As a further improvement of this utility model: the valve body is rotatably connected to a rotating shaft that drives the valve plate to rotate.

[0011] As a further improvement of this utility model: the rotating shaft passes through the valve body and is provided with a support seat on its outer periphery, and one end of the support seat is rotatably connected to a rotating rod that drives the rotating shaft to rotate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This utility model can increase the sealing performance of the valve plate when closed by using a portable air pump and an inflatable elastic sealing ring. Even if the inflatable elastic sealing ring is worn, it can be expanded by inflation to fill the grooves 2 and 1 on the outer periphery of the valve plate and the inner wall of the valve body, thereby reducing gas or liquid leakage and increasing the sealing performance of the valve body.

[0014] 2. By replacing components, the inflatable elastic sealing ring can be easily and quickly replaced when it ages, increasing the efficiency of replacement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the valve body of this utility model;

[0017] Figure 3 This utility model Figure 2 A magnified schematic diagram of the local structure at point A;

[0018] Figure 4 This is a side cross-sectional view of the valve body of this utility model;

[0019] Figure 5 This utility model Figure 4 A magnified schematic diagram of the local structure at point B;

[0020] Figure 6 This utility model Figure 4 A magnified schematic diagram of the local structure at point C;

[0021] Figure 7 This is a front cross-sectional view of the valve body of this utility model;

[0022] Figure 8 This utility model Figure 7 A magnified schematic diagram of the structure at point D.

[0023] In the diagram: 1. Valve body; 2. Sealing assembly; 21. Mounting bracket; 22. Groove one; 23. Groove two; 24. Inflatable elastic sealing ring; 25. Inflation port; 26. Portable air pump; 27. Inlet pipe; 28. Outlet pipe; 29. ​​Connecting pipe; 3. Valve plate; 4. Replacement component; 41. Through groove; 42. Wedge-shaped retaining block; 43. Return spring; 44. Recessed groove; 45. Guide block; 46. Guide groove; 5. Rotating shaft; 6. Support base; 7. Rotating rod; 8. Mounting flange. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0026] Reference Figures 1 to 8 In this embodiment of the present invention, a corrosion-resistant soft-seal butterfly valve includes a valve body 1, a sealing component 2 is provided inside the valve body 1, the sealing component 2 includes a mounting bracket 21 fixedly installed inside the valve body 1, a valve plate 3 is provided inside the valve body 1, the valve plate 3 is located at the inner ring of the mounting bracket 21, a groove 22 is provided on the inner side of the valve plate 3, a groove 23 is provided on the outer periphery of the valve plate 3, an inflatable elastic sealing ring 24 for increasing sealing is provided inside the groove 22, and an inflation port 25 is provided at one end of the inflatable elastic sealing ring 24, a portable air pump 26 for inflating the inflatable elastic sealing ring 24 is fixedly installed on the outer periphery of the valve body 1, an air inlet pipe 27 is fixedly installed at one end of the portable air pump 26, an air delivery pipe 28 is fixedly installed at one end of the portable air pump 26, a connecting pipe 29 is fixedly installed at one end of the air delivery pipe 28, and the connecting pipe 29 passes through the valve body 1 and is threadedly connected to the inflation port 25 at one end of the inflatable elastic sealing ring 24;

[0027] Through the implementation of this method: the inflatable elastic sealing ring 24 is made of fluororubber material. Fluororubber has properties such as corrosion resistance, high temperature resistance and wear resistance, which can increase the corrosion resistance of the valve plate 3 when it is closed and increase the sealing performance. The portable air pump 26 is an AKSOUL portable air pump, powered by 6XAA batteries, with high air flow and air pressure, and also has the function of deflation.

[0028] Reference Figures 1 to 8The mounting bracket 21 is provided with a replacement component 4 for easy replacement by the staff. The replacement component 4 includes a through groove 41 evenly surrounding the outer periphery of the mounting bracket 21, a wedge-shaped block 42 sliding inside the through groove 41, and a slot 44 evenly surrounding the inner wall of the valve body 1 and matching the wedge-shaped block 42. A reset spring 43 for resetting the wedge-shaped block 42 is fixedly installed inside the through groove 41.

[0029] Through the implementation of this method: the inclined surface of one end of the wedge-shaped block 42 faces the air inlet or liquid inlet of the valve body 1. When gas or liquid flows through the inlet, it will create an impact force on the mounting bracket 21 opposite to the inclined surface of the wedge-shaped block 42, reducing the possibility of the mounting bracket 21 falling off during the use of the valve body 1. The mounting bracket 21 is made of 304 stainless steel, which is corrosion resistant and can increase the service life when used inside the valve body 1. When the mounting bracket 21 is installed with the valve body 1, the contact surface is in a sealed state.

[0030] Reference Figures 1 to 8 The inner wall of the valve body 1 is provided with a guide groove 46 for the installation bracket 21 to be replaced and installed. The guide groove 46 is evenly arranged around the inner wall of the valve body 1. The outer periphery of the installation bracket 21 is evenly arranged with guide blocks 45 that are slidably adapted to the guide groove 46.

[0031] By implementing this method, the guide groove 46 and guide block 45 can play a guiding role when installing the mounting bracket 21 and valve body 1, which facilitates the quick installation of wedge-shaped clip 42 and clip groove 44, increasing the speed of installation. At the same time, the contact surfaces of the guide groove 46 and guide block 45 during sliding installation are both in a sealed state.

[0032] Reference Figures 1 to 8 A mounting flange 8 is fixedly installed on the outer periphery of the valve body 1 to facilitate the installation of the valve body 1. The mounting flange 8 is symmetrically fixed at both ends of the outer periphery of the valve body 1. A rotating shaft 5 is rotatably connected inside the valve body 1 to drive the valve plate 3 to rotate. The rotating shaft 5 passes through the valve body 1 and a support seat 6 is provided on the outer periphery. A rotating rod 7 that drives the rotating shaft 5 to rotate is rotatably connected to one end of the support seat 6.

[0033] The working principle of this utility model is as follows: When the valve body 1 is used to rotate the rotating shaft 5 via the rotating rod 7 to close the valve plate 3, the operator starts the portable air pump 26. The portable air pump 26 starts working, drawing in air through the air inlet pipe 27 and supplying the air through the air delivery pipe 28 and connecting pipe 29 to the interior of the inflatable elastic sealing ring 24 via the inflation port 25. When the inflatable elastic sealing ring 24 is inflated, it expands, increasing in volume and expanding towards the groove 23 on the outer periphery of the valve plate 3. The portable air pump 26 and the inflatable elastic sealing ring 24 can increase the sealing performance of the valve plate 3 when closed. Even if the inflatable elastic sealing ring 24 is worn, the expansion during inflation can fill the groove 23 and groove 22 on the outer periphery of the valve plate 3 and the inner wall of the valve body 1. This reduces gas or liquid leakage and increases the sealing performance of valve body 1. When the inflatable elastic sealing ring 24 becomes unusable due to aging, valve body 1 is disassembled through mounting flange 8. Then, the connecting pipe 29 is separated from the inflation port 25 at one end of the inflatable elastic sealing ring 24. Then, valve plate 3 is separated from mounting bracket 21. Then, mounting bracket 21 is pulled. When mounting bracket 21 is pulled, the wedge-shaped blocks 42 evenly arranged around the outer periphery of mounting bracket 21 come into contact with the slot 44, which will squeeze the wedge-shaped blocks 42 into the through slot 41 opened on the outer periphery of mounting bracket 21. Then, mounting bracket 21 can be quickly removed from inside valve body 1 to replace inflatable elastic sealing ring 24. The replacement component 4 enables portable and quick replacement of inflatable elastic sealing ring 24 when it ages, increasing replacement efficiency.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant soft-seal butterfly valve, characterized in that, The system includes a valve body (1), inside which a sealing assembly (2) is provided. The sealing assembly (2) includes a mounting bracket (21) fixedly installed inside the valve body (1). Inside the valve body (1) is a valve plate (3), located at the inner ring of the mounting bracket (21). A first groove (22) is provided on the inner side of the valve plate (3), and a second groove (23) is provided on the outer periphery of the valve plate (3). An inflatable elastic sealing ring (24) for increasing sealing performance is provided inside the first groove (22). An inflation port (25) is provided at one end of the sealing ring (24). A portable air pump (26) for inflating the elastic sealing ring (24) is fixedly installed on the outer periphery of the valve body (1). An air inlet pipe (27) is fixedly installed at one end of the portable air pump (26). An air delivery pipe (28) is fixedly installed at one end of the portable air pump (26). A connecting pipe (29) is fixedly installed at one end of the air delivery pipe (28). The connecting pipe (29) passes through the valve body (1) and is threadedly connected to the inflation port (25) at one end of the elastic sealing ring (24).

2. The corrosion-resistant soft-seal butterfly valve according to claim 1, characterized in that, The mounting bracket (21) is provided with a replacement component (4) on its outer periphery for easy replacement by the staff. The replacement component (4) includes a through groove (41) evenly surrounding the outer periphery of the mounting bracket (21), a wedge-shaped locking block (42) sliding inside the through groove (41), and a locking groove (44) evenly surrounding the inner wall of the valve body (1) and adapted to the wedge-shaped locking block (42). A reset spring (43) for resetting the wedge-shaped locking block (42) is fixedly installed inside the through groove (41).

3. The corrosion-resistant soft-seal butterfly valve according to claim 1, characterized in that, The inner wall of the valve body (1) is provided with a guide groove (46) for the installation bracket (21) to be replaced and installed. The guide groove (46) is evenly arranged around the inner wall of the valve body (1). The outer periphery of the installation bracket (21) is evenly arranged with a guide block (45) that is slidably adapted to the guide groove (46).

4. The corrosion-resistant soft-seal butterfly valve according to claim 1, characterized in that, The valve body (1) is fixedly installed with mounting flanges (8) to facilitate the installation of the valve body (1), and the mounting flanges (8) are symmetrically fixed at both ends of the outer periphery of the valve body (1).

5. The corrosion-resistant soft-seal butterfly valve according to claim 1, characterized in that, The valve body (1) is rotatably connected to a rotating shaft (5) that drives the valve plate (3) to rotate.

6. The corrosion-resistant soft-seal butterfly valve according to claim 5, characterized in that, The rotating shaft (5) passes through the valve body (1) and is provided with a support seat (6) on its outer periphery. One end of the support seat (6) is rotatably connected to a rotating rod (7) that drives the rotating shaft (5) to rotate.

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