High-corrosion-resistance fluorine-lined butterfly valve sealing structure

Abstract

The utility model provides a sealing structure of a high-corrosion-resistance fluorine-lined butterfly valve, which relates to the field of fluorine-lined butterfly valves and comprises a valve body unit, two butterfly valve metal substrates, a fixing ring arranged on one side, far away from each other, of the two butterfly valve metal substrates, and a mounting ring fixedly connected to the surfaces of the butterfly valve metal substrates and the fixing ring, the fixing pin is detachably connected to an inner cavity of the mounting ring; the butterfly valve metal base body serves as a main body structure of a valve, the surface of the butterfly valve metal base body is lined with fluorine, mechanical supporting and connecting effects are achieved, the fixing ring is fixed to a port of a pipeline and provides positioning and supporting for the mounting ring, the mounting ring is matched with the fixing pin, the butterfly valve metal base body can be connected with the pipeline fixedly provided with the fixing ring, and overall disassembly of an assembly is facilitated; therefore, the sealing ring body is convenient to replace, maintainability and reliability of the valve are improved, the containing groove is used for containing the sealing ring body and the positioning assembly, the sealing ring body is used for achieving the sealing function of the valve, and sealing performance and corrosion resistance of the valve are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of fluoropolymer-lined butterfly valves, specifically a sealing structure for a highly corrosion-resistant fluoropolymer-lined butterfly valve. Background Technology

[0002] A fluoropolymer-lined butterfly valve is a special type of butterfly valve. Its working principle is similar to that of an ordinary butterfly valve. It controls the flow of the medium by rotating the valve disc. When the valve disc rotates to be perpendicular to the valve seat sealing surface, the valve is closed and the medium is blocked. When the valve disc rotates to be parallel to the valve seat sealing surface, the valve is open and the medium can pass through smoothly. Its key components are lined with fluoroplastics to improve the valve's corrosion resistance and sealing performance.

[0003] The sealing structure of a fluoropolymer-lined butterfly valve is its core component, directly affecting the valve's sealing performance and service life. Although the corrosion resistance of the sealing structure is enhanced after fluoropolymer lining, it will still gradually age over time, especially when exposed to high temperature, high pressure, or corrosive media. These factors will accelerate the aging of fluoropolymers and cause their performance to decline. Regularly conducting visual inspections and performance tests on the valves, and promptly detecting and addressing any damage or deformation to the fluoropolymer layer, is essential to ensure its corrosion resistance and service life. The ability to quickly inspect and disassemble the sealing structure is key to determining maintenance efficiency.

[0004] In summary, this utility model provides a highly corrosion-resistant fluoropolymer-lined butterfly valve sealing structure to solve the above-mentioned problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A highly corrosion-resistant PTFE-lined butterfly valve sealing structure, comprising,

[0007] The valve body unit includes two butterfly valve metal bases, a fixing ring disposed on the side of the two butterfly valve metal bases that is far apart from each other, a mounting ring fixedly connected to the surface of the butterfly valve metal bases and the fixing ring, and a fixing pin detachably connected to the inner cavity of the mounting ring.

[0008] The positioning unit includes a receiving groove formed on one side of the two butterfly valve metal substrates that are close to each other, a sealing ring body detachably connected to the inner cavity of the receiving groove, a compression ring slidably connected to the inner cavity of the rear receiving groove, and a positioning component disposed in the inner cavity of the rear receiving groove.

[0009] Furthermore, in this utility model, the positioning component includes a fixing groove formed on the back side of the rear receiving groove cavity, a hollow block slidably connected to the cavity of the fixing groove, and a connecting block disposed on the front side of the hollow block, the front end of the connecting block being fixedly connected to the extrusion ring.

[0010] Furthermore, in this utility model, the positioning component also includes a connecting post fixedly connected to the back of the connecting block, an anti-detachment plate slidably connected to the inner cavity of the hollow block, the rear end of the connecting post extending into the inner cavity of the hollow block and fixedly connected to the front of the anti-detachment plate, and a stainless steel spring fixedly connected to the back of the anti-detachment plate, the rear end of the stainless steel spring being fixedly connected to the inner wall of the hollow block.

[0011] Furthermore, in this utility model, the positioning component also includes a first sealing ring fixedly connected to the inner cavity of the fixing groove, the inner cavity of the first sealing ring being in contact with the surface of the connecting block, and a second sealing ring fixedly connected to the inner cavity of the front side of the hollow block, the inner cavity of the second sealing ring being in contact with the surface of the connecting column.

[0012] Furthermore, in this utility model, the positioning component also includes a limiting member disposed in the inner cavity of the fixing groove. The limiting member includes a limiting groove formed in the inner cavity of the fixing groove and a limiting block fixedly connected to the surface of the connecting block. One side of the limiting block extends into the inner cavity of the limiting groove and is slidably connected to the inner cavity of the limiting groove.

[0013] Beneficial effects: This utility model has the following beneficial effects:

[0014] This utility model relates to a butterfly valve whose metal base serves as the main structure. Its surface is lined with fluoropolymer, providing mechanical support and connection. A retaining ring is fixed to the pipe port, providing positioning and support for the mounting ring. The mounting ring, in conjunction with a retaining pin, connects the butterfly valve's metal base to the pipe with the retaining ring, facilitating overall assembly disassembly and replacement of the sealing ring body. This improves the valve's maintainability and reliability. A receiving groove accommodates the sealing ring body and the positioning component. The sealing ring body, made of highly corrosion-resistant material, ensures the valve's sealing performance and corrosion resistance. A compression ring compresses the sealing ring body, enhancing the sealing effect. The positioning component provides a restoring force for the compression ring. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the front view of the rear fixing ring of this utility model;

[0017] Figure 3 This is a schematic diagram of the separated state structure of the sealing ring body and the extrusion ring of this utility model;

[0018] Figure 4 This is a schematic diagram of the hollow block, connecting block and first sealing ring of this utility model in their separated state.

[0019] In the picture:

[0020] 1. Valve body unit; 101. Butterfly valve metal base; 102. Fixing ring; 103. Mounting ring; 104. Fixing pin; 2. Positioning unit; 201. Receiving groove; 202. Sealing ring body; 203. Extrusion ring; 204. Positioning assembly; 2041. Fixing groove; 2042. Hollow block; 2043. Connecting block; 2044. Connecting column; 2045. Anti-detachment plate; 2046. Stainless steel spring; 2047. First sealing ring; 2048. Second sealing ring; 2049. Limiting element. Detailed Implementation

[0021] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0022] Example 1

[0023] like Figure 1-4 As shown, this is the first embodiment of the present invention. This embodiment provides a highly corrosion-resistant PTFE-lined butterfly valve sealing structure, including:

[0024] The valve body unit 1 includes two butterfly valve metal bases 101, a fixing ring 102 disposed on the side of the two butterfly valve metal bases 101 that is far apart from each other, a mounting ring 103 fixedly connected to the surface of the butterfly valve metal base 101 and the fixing ring 102, and a fixing pin 104 detachably connected to the inner cavity of the mounting ring 103.

[0025] The positioning unit 2 includes a receiving groove 201 opened on one side of the two butterfly valve metal bases 101 that are close to each other, a sealing ring body 202 detachably connected to the inner cavity of the receiving groove 201, a compression ring 203 slidably connected to the inner cavity of the rear receiving groove 201, and a positioning component 204 disposed in the inner cavity of the rear receiving groove 201.

[0026] like Figure 1-4As shown, the butterfly valve metal base 101 serves as the main structure of the valve, providing mechanical support and connection. The fixing ring 102 is fixed to the port of the pipeline, providing positioning and support for the mounting ring 103. The mounting ring 103, in conjunction with the fixing pin 104, connects the butterfly valve metal base 101 to the pipeline with the fixing ring 102, facilitating component disassembly and replacement, and improving the maintainability and reliability of the valve. The receiving groove 201 is used to accommodate the sealing ring body 202 and the positioning component 204. The sealing ring body 202 is used to achieve the sealing function of the valve and is made of highly corrosion-resistant material to ensure the sealing performance and corrosion resistance of the valve. The compression ring 203 is used to compress the sealing ring body 202 to enhance the sealing effect. The positioning component 204 provides a restoring force for the compression ring 203.

[0027] Example 2

[0028] Reference Figure 2 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0029] In this embodiment, the positioning component 204 includes a fixing groove 2041 formed on the back side of the inner cavity of the rear receiving groove 201, a hollow block 2042 slidably connected to the inner cavity of the fixing groove 2041, and a connecting block 2043 disposed on the front side of the hollow block 2042. The front end of the connecting block 2043 is fixedly connected to the compression ring 203.

[0030] The positioning component 204 also includes a connecting post 2044 fixedly connected to the back of the connecting block 2043, an anti-detachment piece 2045 slidably connected to the inner cavity of the hollow block 2042, the rear end of the connecting post 2044 extending into the inner cavity of the hollow block 2042 and fixedly connected to the front of the anti-detachment piece 2045, and a stainless steel spring 2046 fixedly connected to the back of the anti-detachment piece 2045, the rear end of the stainless steel spring 2046 being fixedly connected to the inner wall of the hollow block 2042.

[0031] like Figure 2 As shown, the fixing groove 2041 provides space for the connecting block 2043 to move, the hollow block 2042 provides sliding space for the connecting post 2044, the connecting block 2043 is used to position and fix the extrusion ring 203, the connecting post 2044 is used to connect the connecting block 2043 and the stainless steel spring 2046 to enhance stability, the anti-detachment piece 2045 is used to prevent the connecting block 2043 from falling out of the hollow block 2042, and the stainless steel spring 2046 is used to provide elastic support to ensure the flexibility and stability of the positioning assembly 204.

[0032] Example 3

[0033] Reference Figure 4 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0034] In this embodiment, the positioning component 204 further includes a first sealing ring 2047 fixedly connected to the inner cavity of the fixing groove 2041, the inner cavity of the first sealing ring 2047 being in contact with the surface of the connecting block 2043, and a second sealing ring 2048 fixedly connected to the inner cavity of the front side of the hollow block 2042, the inner cavity of the second sealing ring 2048 being in contact with the surface of the connecting post 2044.

[0035] The positioning component 204 also includes a limiting member 2049 disposed in the inner cavity of the fixing groove 2041. The limiting member 2049 includes a limiting groove formed in the inner cavity of the fixing groove 2041 and a limiting block fixedly connected to the surface of the connecting block 2043. One side of the limiting block extends into the inner cavity of the limiting groove and is slidably connected to the inner cavity of the limiting groove.

[0036] like Figure 4 As shown, the inner cavity of the first sealing ring 2047 contacts the surface of the connecting block 2043, enhancing the sealing performance of the positioning component 204. The inner cavity of the second sealing ring 2048 contacts the surface of the connecting column 2044, further enhancing the sealing performance. The limiting groove and the limiting block of the limiting member 2049 cooperate to ensure the sliding range of the positioning component 204 and prevent excessive sliding from causing damage.

[0037] In use, the retaining ring 102 is fixedly connected to the surface of the pipe. By inserting the retaining pin 104 into the mounting ring 103, the butterfly valve metal base 101 and the retaining ring 102 can be connected as a whole. At the same time, by removing the retaining pin 104, the butterfly valve metal base 101 and the retaining ring 102 can be disassembled as a whole. After disassembly, the sealing ring body 202 is directly exposed between the two butterfly valve metal bases 101. The sealing ring body 202 can be removed by separating the two butterfly valve metal bases 101. After removal, a new sealing ring body 202 is replaced, and the two butterfly valve metal bases 101 are aligned. At this time, the compression ring 203 can compress and position the sealing ring body 202 under the action of the resetting thrust of the positioning component 204. Then, the two butterfly valve metal bases 101 are merged and fixed to the retaining ring 102 by the retaining pin 104 and the mounting ring 103.

[0038] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0039] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A high corrosion resistant fluorine-lined butterfly valve seal structure, characterized in that: include, The valve body unit (1) includes two butterfly valve metal bases (101), a fixing ring (102) disposed on the side of the two butterfly valve metal bases (101) that is far apart from each other, a mounting ring (103) fixedly connected to the surface of the butterfly valve metal base (101) and the fixing ring (102), and a fixing pin (104) detachably connected to the inner cavity of the mounting ring (103); The positioning unit (2) includes a receiving groove (201) opened on one side close to the two butterfly valve metal bases (101), a sealing ring body (202) detachably connected to the inner cavity of the receiving groove (201), a compression ring (203) slidably connected to the inner cavity of the rear receiving groove (201), and a positioning component (204) disposed in the inner cavity of the rear receiving groove (201).

2. The corrosion resistant fluoropolymer coated butterfly valve seal of claim 1, wherein: The positioning component (204) includes a fixing groove (2041) formed on the back side of the inner cavity of the rear receiving groove (201), a hollow block (2042) slidably connected to the inner cavity of the fixing groove (2041), and a connecting block (2043) disposed on the front side of the hollow block (2042). The front end of the connecting block (2043) is fixedly connected to the compression ring (203).

3. The corrosion resistant fluoropolymer coated butterfly valve seal of claim 2, wherein: The positioning component (204) further includes a connecting post (2044) fixedly connected to the back of the connecting block (2043), an anti-detachment piece (2045) slidably connected to the inner cavity of the hollow block (2042), the rear end of the connecting post (2044) extending into the inner cavity of the hollow block (2042) and fixedly connected to the front of the anti-detachment piece (2045), and a stainless steel spring (2046) fixedly connected to the back of the anti-detachment piece (2045), the rear end of the stainless steel spring (2046) being fixedly connected to the inner wall of the hollow block (2042).

4. The corrosion resistant fluoropolymer coated butterfly valve seal of claim 2, wherein: The positioning component (204) further includes a first sealing ring (2047) fixedly connected to the inner cavity of the fixing groove (2041), the inner cavity of the first sealing ring (2047) being in contact with the surface of the connecting block (2043), and a second sealing ring (2048) fixedly connected to the inner cavity of the front side of the hollow block (2042), the inner cavity of the second sealing ring (2048) being in contact with the surface of the connecting post (2044).

5. The high corrosion resistant fluoropolymer coated butterfly valve seal of claim 2, wherein: The positioning component (204) further includes a limiting member (2049) disposed in the inner cavity of the fixing groove (2041). The limiting member (2049) includes a limiting groove formed in the inner cavity of the fixing groove (2041) and a limiting block fixedly connected to the surface of the connecting block (2043). One side of the limiting block extends into the inner cavity of the limiting groove and is slidably connected to the inner cavity of the limiting groove.

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