Detachable fluorine-lined check valve

Abstract

The utility model belongs to the field of fluorine lining check valves, and particularly relates to a detachable fluorine lining check valve which comprises a fluorine lining check valve body, the fluorine lining check valve body comprises a valve body, the two ends of the valve body are fixedly connected with a pipeline through flange plates, and the top of the valve body is fixedly communicated with a maintenance pipe. According to the fluorine-lined check valve, the fluorine-lined check valve body, the cleaning mechanism and the sealing mechanism are used in cooperation, when water flows in the inner cavity of the fluorine-lined check valve body, the valve clack turns over, meanwhile, the cleaning mechanism floats upwards and rotates under the buoyancy of water, the surface of the valve clack is cleaned, the connecting position of the overhaul pipe and the overhaul cover can be sealed through the sealing mechanism, and the service life of the overhaul pipe is prolonged. The problems that after the check valve is used for a long time, due to the fact that impurities are mixed in liquid flowing, the impurities can be adsorbed and accumulated on the valve clack, the valve clack can be clamped due to mass accumulation, the valve cannot be closed or opened in time, and the use safety of the valve is affected are solved.

Description

Detachable fluoropolymer-lined check valve Technical Field

[0001] This utility model relates to the field of fluoropolymer-lined check valves, specifically a detachable fluoropolymer-lined check valve. Background Technology

[0002] A fluoropolymer-lined check valve, also known as a non-return valve, is a type of valve that allows the medium to flow in only one direction while preventing flow in the opposite direction. These valves are typically automatic. Under the pressure of the fluid flowing in one direction, the valve disc opens. When the fluid flows in the opposite direction, the fluid pressure and the weight of the valve disc combine to act on the valve seat, thus cutting off the flow. For ease of maintenance, fluoropolymer-lined check valves are generally designed to be detachable.

[0003] Fluorine-lined check valves are used in industries such as chemical, pharmaceutical, and environmental protection. However, after prolonged use, impurities may accumulate on the valve disc due to the impurities in the liquid flow. This accumulation can cause the valve disc to become stuck, preventing the valve from closing or opening in time and affecting the safety of valve operation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a detachable fluoropolymer-lined check valve. After prolonged use, impurities may accumulate on the valve disc due to the impurities in the liquid flow. This accumulation can cause the valve disc to become stuck, preventing the valve from closing or opening in a timely manner and affecting the safety of valve use.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a detachable fluoropolymer-lined check valve, including a fluoropolymer-lined check valve body, the fluoropolymer-lined check valve body including a valve body, a maintenance pipe fixedly connected to the top of the valve body, a maintenance cover fixedly connected to the top of the maintenance pipe through a flange, a support shaft fixedly connected to the inner cavity of the valve body, a valve disc movably connected to the surface of the support shaft, two torsion springs sleeved on the surface of the support shaft, one end of the torsion spring fixedly connected to the inner cavity of the valve body, the other end of the torsion spring fixedly connected to the surface of the valve disc, a cleaning mechanism provided on the surface of the valve body, and a sealing mechanism provided on the surface of the maintenance pipe;

[0006] The cleaning mechanism includes an installation chamber, the top of which is fixedly connected to the bottom of the valve body. A fixed column is fixedly connected to the bottom of the inner cavity of the installation chamber. An extension column is movably connected to the inner cavity of the fixed column. A rotating brush is fixedly connected to the top of the extension column. Several plastic brush strips are fixedly connected to the top of the rotating brush. The top of the rotating brush is movably connected to the surface of the valve disc.

[0007] Preferably, a limiting ring is fixedly connected to the inner cavity of the fixed column, and a sliding block is fixedly connected to the bottom of the extension column, with the surface of the sliding block being movably connected to the surface of the limiting ring.

[0008] Preferably, a mounting base is fixedly connected to the surface of the extension column, and a rotating blade is fixedly connected to the surface of the mounting base, wherein the number of rotating blades is four.

[0009] Preferably, a buoyancy ring is fixedly connected to the surface of the extension column, and the buoyancy ring is located between the rotating brush and the mounting base.

[0010] Preferably, the sealing mechanism includes a fixed plate, the inner cavity of the fixed plate is fixedly connected to the surface of the inspection pipe, a sealing cover is threadedly connected to the inner cavity of the fixed plate, a first limiting ring is fixedly connected to the bottom of the sealing cover, a sealing ring is movably connected to the inner cavity of the first limiting ring, the sealing ring is made of rubber, and the sealing ring is located at the connection between the torsion spring and the sealing ring.

[0011] Preferably, a second limiting block is fixedly connected to the inner cavity of the fixing plate, and the surface of the second limiting block is in close contact with the surface of the sealing ring.

[0012] Preferably, the top of the sealing cover is provided with a rotating disk, and the surface of the rotating disk is fixedly connected to the top of the sealing cover by a connecting post.

[0013] The advantages of this utility model are:

[0014] This invention utilizes a fluoropolymer-lined check valve body, a cleaning mechanism, and a sealing mechanism in conjunction. When water flows within the inner cavity of the fluoropolymer-lined check valve body, the valve disc flips over. Simultaneously, the cleaning mechanism is lifted and rotated by the buoyancy of the water, cleaning the surface of the valve disc. The sealing mechanism seals the connection between the inspection pipe and the inspection cover, preventing impurities from accumulating on the valve disc after prolonged use due to liquid flow. This accumulation can cause the valve disc to become stuck, preventing the valve from closing or opening in a timely manner and affecting the safety of valve operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a schematic cross-sectional view of the valve body and mounting compartment of this utility model;

[0018] Figure 3 is a schematic diagram of the fixed column structure of this utility model;

[0019] Figure 4 is a cross-sectional structural diagram of the fixing plate and sealing cover of this utility model.

[0020] In the diagram: 1. Fluorine-lined check valve body; 101. Valve body; 102. Inspection pipe; 103. Support shaft; 104. Valve disc; 105. Torsion spring; 106. Inspection cover; 2. Cleaning mechanism; 201. Installation chamber; 202. Fixed column; 203. Extension column; 204. Mounting seat; 205. Buoyancy ring; 206. Rotating brush; 207. Limiting ring; 208. Sliding block; 209. Rotating blade; 3. Sealing mechanism; 301. Fixed plate; 302. Sealing cover; 303. Rotating disc; 304. First limiting ring; 305. Second limiting block; 306. Sealing ring. Detailed Implementation

[0021] 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 scope of protection of the present utility model.

[0022] The present application will be further described in detail below with reference to Figures 1-4.

[0023] This application discloses a detachable fluoropolymer-lined check valve. Referring to Figures 1 and 4, the detachable fluoropolymer-lined check valve includes a fluoropolymer-lined check valve body 1. The fluoropolymer-lined check valve body 1 includes a valve body 101. Both ends of the valve body 101 are fixedly connected to pipelines via flanges. A maintenance pipe 102 is fixedly connected to the top of the valve body 101. A maintenance cover 106 is fixedly connected to the top of the maintenance pipe 102 via a flange. A support shaft 103 is fixedly connected to the inner cavity of the valve body 101. A valve disc 104 is movably connected to the surface of the support shaft 103. Two torsion springs 105 are sleeved on the surface of the support shaft 103. One end of the torsion spring 105 is fixedly connected to the inner cavity of the valve body 101, and the other end of the torsion spring 105 is fixedly connected to the surface of the valve disc 104. A cleaning mechanism 2 is provided on the surface of the valve body 101, and a sealing mechanism 3 is provided on the surface of the maintenance pipe 102.

[0024] The cleaning mechanism 2 includes an installation chamber 201. The top of the installation chamber 201 is fixedly connected to the bottom of the valve body 101. A fixing column 202 is fixedly connected to the bottom of the inner cavity of the installation chamber 201. An extension column 203 is movably connected to the inner cavity of the fixing column 202. A rotating brush 206 is fixedly connected to the top of the extension column 203. Several plastic brush strips are fixedly connected to the top of the rotating brush 206. The top of the rotating brush 206 is movably connected to the surface of the valve disc 104.

[0025] Referring to Figure 3, a limiting ring 207 is fixedly connected to the inner cavity of the fixed column 202, and a sliding block 208 is fixedly connected to the bottom of the extension column 203. The surface of the sliding block 208 is movably connected to the surface of the limiting ring 207. By setting the limiting ring 207 and the sliding block 208 to work together, when the extension column 203 drives the sliding block 208 to move upward in the inner cavity of the fixed column 202, the sliding block 208 contacts the surface of the limiting ring 207 and is blocked by the limiting ring 207, thus preventing the sliding block 208 from detaching from the inner cavity of the fixed column 202 when sliding, thereby indirectly preventing the extension column 203 from detaching from the inner cavity of the fixed column 202.

[0026] Referring to Figure 3, a mounting base 204 is fixedly connected to the surface of the extension column 203, and a rotating blade 209 is fixedly connected to the surface of the mounting base 204. There are four rotating blades 209. With the mounting base 204 and the rotating blades 209, when the liquid in the inner cavity of the valve body 101 flows from one end to the other end, the flow rate of the liquid drives the rotating blades 209 to rotate around the mounting base 204 as an axis, thereby indirectly driving the rotating brush 206 to rotate. The plastic brush on the surface of the rotating brush 206 cleans the surface of the valve disc 104.

[0027] Referring to Figure 3, a buoyancy ring 205 is fixedly connected to the surface of the extension column 203. The buoyancy ring 205 is located between the rotating brush 206 and the mounting base 204. Because the buoyancy ring 205 has buoyancy in the liquid, when the inner cavity of the valve body 101 is filled with liquid, the buoyancy ring 205 will drive the extension column 203 to move upward, indirectly driving the plastic brush on the surface of the rotating brush 206 to contact the surface of the valve disc 104. When the liquid level in the inner cavity of the valve body 101 drops, the buoyancy ring 205 will drop with the liquid level, driving the extension column 203 to move downward, indirectly driving the rotating brush 206 to move downward, providing space for the valve disc 104 to rotate and preventing the valve disc 104 from getting stuck.

[0028] Referring to Figures 1 and 4, the sealing mechanism 3 includes a fixed plate 301. The inner cavity of the fixed plate 301 is fixedly connected to the surface of the inspection tube 102. A sealing cover 302 is threadedly connected to the inner cavity of the fixed plate 301. A first limiting ring 304 is fixedly connected to the bottom of the sealing cover 302. A sealing ring 306 is movably connected to the inner cavity of the first limiting ring 304. The sealing ring 306 is made of rubber and is located at the connection between the torsion spring 105 and the sealing ring 306. By setting the fixed plate 301, the sealing cover 302, the first limiting ring 304 and the sealing ring 306 to work together, the surface of the sealing cover 302 rotates downward in the threaded inner cavity of the fixed plate 301, thereby driving the first limiting ring 304 to press the sealing ring 306, causing the sealing ring 306 to deform and seal the connection between the inspection tube 102 and the inspection cover 106.

[0029] Referring to Figure 4, a second limiting block 305 is fixedly connected to the inner cavity of the fixing plate 301. The surface of the second limiting block 305 is in close contact with the surface of the sealing ring 306. The second limiting block 305 is set to limit the sealing ring 306. When the inclined surface of the first limiting ring 304 and the inclined surface of the second limiting block 305 are in contact, the sealing ring 306 can be pushed to the gap where the inspection tube 102 and the inspection cover 106 are connected.

[0030] Referring to Figure 4, a rotating disk 303 is provided on the top of the sealing cover 302. The surface of the rotating disk 303 is fixedly connected to the top of the sealing cover 302 through a connecting post. Due to the disc shape of the rotating disk 303, it is easier for workers to rotate a large object such as the sealing cover 302.

[0031] Working principle: When liquid flows inside the valve body 101, the flow rate causes the valve disc 104 to rotate around the support shaft 103. This causes the torsion spring 105 to deform. Simultaneously, the liquid inside the valve body 101 causes the buoyancy ring 205 to rise due to buoyancy. The buoyancy ring 205 then drives the extension column 203 to move upwards within the fixed column 202. The extension column 203 then drives the rotating brush 206 to move upwards until it reaches the surface of the rotating brush 206. The plastic brush contacts the surface of the valve disc 104. Simultaneously, the extension column 203 causes the mounting base 204 and the rotating blade 209 to float upwards. Due to the liquid flow rate, the rotating blade 209 rotates around the mounting base 204, which in turn causes the extension column 203 to rotate. The extension column 203 then drives the rotating brush 206 to clean the surface of the valve disc 104. When the liquid flow rate inside the valve body 101 is stopped and slows down, the valve disc 104 rotates due to its own weight and the elastic torque of the torsion spring 105, sealing one end of the pipe in the valve body 101. During this rotational sealing process, the liquid level at the other end of the valve body 101 decreases. At this time, the buoyancy ring 205 moves downwards with the liquid level, causing the extension column 203 to move downwards. This indirectly causes the buoyancy ring 205, rotating brush 206, mounting base 204, and rotating blade 209 on the extension column 203 to move downwards, thus preventing obstruction of the valve disc 104's rotation. To prevent the connection between the inspection pipe 102 and the inspection cover 106 from losing its seal during repeated maintenance, the rotating disk 303 is first rotated. The rotating disk 303 drives the sealing cover 302 to rotate, causing the sealing cover 302 to rotate downward in the inner cavity of the fixed plate 301. At the same time, the sealing cover 302 will drive the first limiting ring 304 to squeeze the sealing ring 306. The deformation of the sealing ring 306 seals the gap at the connection between the inspection pipe 102 and the inspection cover 106.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A detachable fluoropolymer-lined check valve, comprising a fluoropolymer-lined check valve body (1), characterized in that: The PTFE-lined check valve body (1) includes a valve body (101), a maintenance pipe (102) is fixedly connected to the top of the valve body (101), a maintenance cover (106) is fixedly connected to the top of the maintenance pipe (102) via a flange, a support shaft (103) is fixedly connected to the inner cavity of the valve body (101), a valve disc (104) is movably connected to the surface of the support shaft (103), and a torsion spring (105) is sleeved on the surface of the support shaft (103). There are two torsion springs (105), one end of which is fixedly connected to the inner cavity of the valve body (101), and the other end of which is fixedly connected to the valve disc (104). 04) Surface fixed connection, the surface of the valve body (101) is provided with a cleaning mechanism (2), and the surface of the inspection pipe (102) is provided with a sealing mechanism (3); the cleaning mechanism (2) includes an installation chamber (201), the top of the installation chamber (201) is fixedly connected to the bottom of the valve body (101), the bottom of the inner cavity of the installation chamber (201) is fixedly connected with a fixing column (202), the inner cavity of the fixing column (202) is movably connected with an extension column (203), the top of the extension column (203) is fixedly connected with a rotating brush (206), and the top of the rotating brush (206) is movably connected to the surface of the valve disc (104).

2. The detachable fluoropolymer-lined check valve according to claim 1, characterized in that: The inner cavity of the fixed column (202) is fixedly connected to a limiting ring (207), and the bottom of the extension column (203) is fixedly connected to a sliding block (208). The surface of the sliding block (208) is movably connected to the surface of the limiting ring (207).

3. The detachable fluoropolymer-lined check valve according to claim 1, characterized in that: The surface of the extension column (203) is fixedly connected to a mounting base (204), and the surface of the mounting base (204) is fixedly connected to a rotating blade (209), the number of which is four.

4. The detachable fluoropolymer-lined check valve according to claim 1, characterized in that: A buoyancy ring (205) is fixedly connected to the surface of the extension column (203), and the buoyancy ring (205) is located between the rotating brush (206) and the mounting base (204).

5. The detachable fluoropolymer-lined check valve according to claim 1, characterized in that: The sealing mechanism (3) includes a fixing plate (301), the inner cavity of the fixing plate (301) is fixedly connected to the surface of the inspection pipe (102), the inner cavity of the fixing plate (301) is threadedly connected to a sealing cover (302), the bottom of the sealing cover (302) is fixedly connected to a first limiting ring (304), the inner cavity of the first limiting ring (304) is movably connected to a sealing ring (306), and the sealing ring (306) is located at the connection between the torsion spring (105) and the sealing ring (306).

6. The detachable fluoropolymer-lined check valve according to claim 5, characterized in that: The inner cavity of the fixing plate (301) is fixedly connected to a second limiting block (305), and the surface of the second limiting block (305) is in close contact with the surface of the sealing ring (306).

7. The detachable fluoropolymer-lined check valve according to claim 5, characterized in that: The top of the sealing cover (302) is provided with a rotating disk (303), and the surface of the rotating disk (303) is fixedly connected to the top of the sealing cover (302) through a connecting post.

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