Bidirectional sealing fluorine-lined floating ball valve

Abstract

The utility model provides a bidirectional sealing fluorine-lined floating ball valve, which relates to the field of fluorine-lined floating ball valves, and comprises a valve unit, a valve body, a ball body arranged in an inner cavity of the valve body, a shaft rod arranged at the top of the ball body, and sealing components arranged on two sides of the ball body and used for sealing; the impurity removal assembly comprises an end pipe and an intercepting net which is in threaded connection with an inner cavity of the end pipe and is used for intercepting impurities; two-way sealing is achieved by arranging the sealing assemblies on the two sides of the ball body, the springs in the sealing assemblies can automatically adjust the positions of the sealing rings and compensate for gaps generated due to abrasion or deformation, and therefore tight contact between the sealing rings and the ball body can be guaranteed no matter which direction fluid flows from. The sealing performance during use is greatly improved, impurities in fluid entering the valve unit can be intercepted through the arrangement of the impurity removal assembly, and the situation that the valve unit is abraded by the impurities, and the service life is affected is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of fluoropolymer-lined floating ball valves, specifically a bidirectional sealing fluoropolymer-lined floating ball valve. Background Technology

[0002] Fluorine-lined floating ball valves are a special type of valve that combines the structure of a floating ball valve with fluoropolymer lining technology. They can resist the erosion of various corrosive media such as strong acids, strong alkalis, and organic solvents, and are widely used in industries such as chemical, petroleum, and pharmaceutical where strict control of fluid leakage is required.

[0003] The working principle of the existing fluoropolymer-lined floating ball valve is mainly based on the rotational movement of the ball to open and close. When the valve is closed, the ball is pressed tightly against the valve seat by rotation and is in close contact with the seal at the inlet end, thus forming an effective sealing barrier to prevent fluid from passing through. When it is necessary to open the valve, the ball is rotated 90 degrees by operating the handle or actuator, so that the through hole of the ball is aligned with the valve body channel, and the fluid can then pass through smoothly.

[0004] However, in actual use, the existing ball valve structure can only achieve unidirectional sealing, that is, it can only be used in one direction. The ball seals in the direction of water flow, which affects its applicability. Moreover, the position of the sealing element is fixed and cannot be freely adjusted with the rotation of the ball. Therefore, during long-term use, the sealing element is easily worn and deformed by the friction of the medium flow and the rotation of the ball. This leads to a decrease in the tightness of the contact between the sealing ring and the ball, which affects the sealing performance of the valve.

[0005] In summary, this utility model provides a bidirectional sealing fluoropolymer-lined floating ball valve to solve the above-mentioned problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A bidirectional sealing fluoropolymer-lined floating ball valve, comprising

[0008] A valve unit includes a valve body, a ball disposed in the inner cavity of the valve body, a shaft disposed on the top of the ball, and sealing assemblies disposed on both sides of the ball for sealing.

[0009] The impurity removal assembly includes an end tube, an interception mesh threaded into the inner cavity of the end tube for intercepting impurities, and an impurity collection box connected to the bottom of the end tube for collecting impurities.

[0010] The sealing assembly includes a seat ring, a sleeve fixedly connected to the inner cavity of the seat ring, a slide cylinder slidably connected to the inner cavity of the sleeve, a spring fixedly connected to the inner cavity of the sleeve, a support plate fixedly connected to one end of the slide cylinder, and a sealing ring fixedly connected to one side of the support plate.

[0011] Furthermore, in this utility model, an operating ring handle is fixedly connected to the top of the shaft, and a sealing sleeve is provided on the surface of the shaft, with the sealing sleeve in contact with the inner wall of the valve body.

[0012] Furthermore, in this invention, a round rod is fixedly connected to one side of the interception net, and a cover is snapped onto the bottom of the collection box.

[0013] Furthermore, in this invention, the end of the spring away from the inner cavity of the sleeve is fixedly connected to the slide cylinder, and the side of the sealing ring away from the support plate is in close contact with the ball.

[0014] Furthermore, in this invention, the end pipe is connected to both ends of the valve body, and both the valve unit and the impurity removal component are fluoropolymer lined.

[0015] Beneficial effects: This utility model has the following beneficial effects:

[0016] This invention achieves bidirectional sealing by setting sealing components on both sides of the ball. The spring in the sealing component can automatically adjust the position of the sealing ring to compensate for gaps caused by wear or deformation. Thus, no matter which direction the fluid flows from, it can ensure tight contact between the sealing ring and the ball, greatly improving the sealing performance during use. The impurity removal component can intercept impurities in the fluid entering the valve unit, preventing impurities from causing wear to the valve unit and affecting its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the impurity removal component of this utility model;

[0019] Figure 3 This is a schematic diagram of the valve body, ball, shaft and sealing assembly in their separated states according to this utility model;

[0020] Figure 4 This is a schematic diagram of the sealing assembly of this utility model in an exploded state.

[0021] Figure 5 This is a cross-sectional structural diagram of the sleeve of this utility model.

[0022] In the picture:

[0023] 100. Valve unit; 110. Valve body; 120. Ball; 130. Shaft; 131. Operating ring handle; 140. Sealing assembly; 141. Sealing ring; 142. Sleeve; 143. Slide cylinder; 144. Spring; 145. Support plate; 146. Sealing ring; 200. Impurity removal assembly; 210. End pipe; 220. Interception net; 221. Round rod; 230. Impurity collection box. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] like Figure 1-5 As shown, this is the first embodiment of the present invention, which provides a bidirectional sealing PTFE-lined floating ball valve, including...

[0027] The valve unit 100 includes a valve body 110, a ball 120 disposed in the inner cavity of the valve body 110, a shaft 130 disposed on the top of the ball 120, and sealing assemblies 140 disposed on both sides of the ball 120 for sealing.

[0028] The impurity removal assembly 200 includes an end tube 210, an interception net 220 threadedly connected to the inner cavity of the end tube 210 for intercepting impurities, and an impurity collection box 230 connected to the bottom of the end tube 210 for collecting impurities.

[0029] The sealing assembly 140 includes a seat ring 141, a sleeve 142 fixedly connected to the inner cavity of the seat ring 141, a slide cylinder 143 slidably connected to the inner cavity of the sleeve 142, a spring 144 fixedly connected to the inner cavity of the sleeve 142, a support piece 145 fixedly connected to one end of the slide cylinder 143, and a sealing ring 146 fixedly connected to one side of the support piece 145.

[0030] like Figure 1-5As shown, the shaft 130 drives the ball 120 to rotate 90 degrees, aligning or offsetting the through hole of the ball 120 with the channel of the valve body 110, thereby allowing or blocking the flow of fluid. When the fluid enters the valve unit 100, it first passes through the end pipe 210 and the interceptor net 220. The interceptor net 220 can intercept impurities in the fluid, and the impurities intercepted by the interceptor net 220 will fall into the collection box 230 for easy cleaning later. When the valve unit 100 is closed or opened, the fluid flows through the end pipe 210 and the interceptor net 220 to block impurities in the fluid. The sealing components 140 provided on both sides of the sphere 120 can achieve bidirectional sealing. The return force of the spring 144 in the sealing component 140 will drive the slide cylinder 143 and the support plate 145 to return to their original position. The support plate 145 will drive the sealing ring 146 to move, thereby automatically adjusting the position of the sealing ring 146 and compensating for gaps caused by wear or deformation. Thus, no matter which direction the fluid flows from, the tight contact between the sealing ring 146 and the sphere 120 can be guaranteed, which greatly improves the sealing performance during use.

[0031] Example 2

[0032] Reference Figure 1-3 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0033] In this embodiment, an operating ring handle 131 is fixedly connected to the top of the shaft 130, and a sealing sleeve is provided on the surface of the shaft 130, and the sealing sleeve is in contact with the inner wall of the valve body 110.

[0034] A round rod 221 is fixedly connected to one side of the interception net 220, and a cover is snapped into the bottom of the debris collection box 230.

[0035] like Figure 1-3 As shown, the operating ring handle 131 is fixedly connected to the top of the shaft 130, providing convenience for the operator. By rotating the operating ring handle 131, the rotation of the shaft 130 and the ball 120 can be easily controlled, thereby realizing the opening and closing of the valve. By setting a sealing sleeve on the surface of the shaft 130 and contacting the inner wall of the valve body 110, the main purpose is to enhance the sealing between the shaft 130 and the valve body 110, effectively preventing fluid from leaking out from the gap between the shaft 130 and the valve body 110. The round rod 221 is fixedly connected to one side of the interception net 220, mainly to facilitate the installation and disassembly of the interception net 220. The round rod 221 allows the interception net 220 to be easily removed from or placed into the end tube 210, making it easy to clean and replace the interception net 220. The bottom of the impurity collection box 230 is fitted with a cover, mainly to facilitate the cleaning of impurities in the impurity collection box 230. By opening the cover, the impurities in the impurity collection box 230 can be easily poured out or cleaned, keeping the impurity collection box 230 clean and unobstructed.

[0036] Example 3

[0037] Reference Figure 1 , 3 4 and 5 are the third embodiment of this utility model, which is based on the first two embodiments.

[0038] In this embodiment, the end of the spring 144 away from the inner cavity of the sleeve 142 is fixedly connected to the slide cylinder 143, and the side of the sealing ring 146 away from the support plate 145 is in close contact with the ball 120.

[0039] End pipe 210 connects to both ends of valve body 110, and valve unit 100 and impurity removal component 200 are both fluoropolymer lined.

[0040] like Figure 1 , 3 As shown in Figures 4 and 5, the end of the spring 144 away from the inner cavity of the sleeve 142 is fixedly connected to the slide cylinder 143. This is mainly to provide a continuous and stable pressure to the sealing ring 146. When the ball 120 rotates, the spring 144 pushes the slide cylinder 143 and the sealing ring 146 to fit tightly against the ball 120, ensuring close contact between the sealing ring 146 and the ball 120. Both the valve unit 100 and the impurity removal component 200 are fluoropolymer lined, mainly to enhance the corrosion resistance of the valve. Fluorine lining can form a fluoride protective film on the surface of the valve and the impurity removal component 200, effectively preventing corrosive media from eroding and damaging the valve and the impurity removal component 200.

[0041] In use, when the valve needs to be opened, the shaft 130 is rotated 90 degrees clockwise by operating the ring handle 131, aligning the through hole of the ball 120 with the channel of the valve body 110, allowing fluid to flow smoothly. When the fluid enters the valve unit 100, it first passes through the end pipe 210 and the interceptor net 220. The interceptor net 220 can intercept impurities in the fluid, and the impurities intercepted by the interceptor net 220 will fall into the collection box 230 for easy cleaning later. When the valve needs to be closed, the shaft 130 is rotated in the opposite direction, aligning the through hole of the ball 120 with the valve body. By staggering the 110 channels, closure can be achieved. Simultaneously, the sealing components 140 on both sides of the sphere 120 enable bidirectional sealing. The return force of the spring 144 in the sealing component 140 drives the slide cylinder 143 and the support plate 145 to return to their original positions. The support plate 145 then drives the sealing ring 146 to move, automatically adjusting the position of the sealing ring 146 to compensate for gaps caused by wear or deformation. Thus, regardless of the direction of fluid flow, a tight contact between the sealing ring 146 and the sphere 120 can be ensured, greatly improving the sealing performance during use.

[0042] 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.

[0043] 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 bidirectional sealing fluoropolymer-lined floating ball valve, characterized in that: include The valve unit (100) includes a valve body (110), a ball (120) disposed in the inner cavity of the valve body (110), a shaft (130) disposed on the top of the ball (120), and sealing assemblies (140) disposed on both sides of the ball (120) for sealing. The impurity removal assembly (200) includes an end tube (210), an interception net (220) threaded into the inner cavity of the end tube (210) for intercepting impurities, and an impurity collection box (230) connected to the bottom of the end tube (210) for collecting impurities. The sealing assembly (140) includes a seat ring (141), a sleeve (142) fixedly connected to the inner cavity of the seat ring (141), a slide cylinder (143) slidably connected to the inner cavity of the sleeve (142), a spring (144) fixedly connected to the inner cavity of the sleeve (142), a support plate (145) fixedly connected to one end of the slide cylinder (143), and a sealing ring (146) fixedly connected to one side of the support plate (145).

2. The bidirectional sealing fluoropolymer-lined floating ball valve as described in claim 1, characterized in that: An operating ring handle (131) is fixedly connected to the top of the shaft (130), and a sealing sleeve is provided on the surface of the shaft (130), and the sealing sleeve is in contact with the inner wall of the valve body (110).

3. The bidirectional sealing fluoropolymer-lined floating ball valve as described in claim 1, characterized in that: A round rod (221) is fixedly connected to one side of the interception net (220), and a cover is snapped into the bottom of the collection box (230).

4. The bidirectional sealing fluoropolymer-lined floating ball valve as described in claim 1, characterized in that: The end of the spring (144) away from the inner cavity of the sleeve (142) is fixedly connected to the slide (143), and the side of the sealing ring (146) away from the support plate (145) is in close contact with the ball (120).

5. The bidirectional sealing fluoropolymer-lined floating ball valve as described in claim 1, characterized in that: The end pipe (210) is connected to both ends of the valve body (110), and both the valve unit (100) and the impurity removal component (200) are fluoropolymer lined.

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