Rolling lining polytetrafluoroethylene anti-corrosion valve

Abstract

The utility model relates to the technical field of valves, and discloses a rolling lining teflon anti-corrosion valve which comprises a valve body, a valve core, a sealing ring and a sealing ring. The two connecting pipes are arranged at the two ends of the valve body and are communicated with the cavity; the rolling lining polytetrafluoroethylene hose sleeve is arranged in the valve body; the two stop plates are arranged in the valve body, the two stop plates are located in the cavity, and the rolling lining teflon hose sleeve is located between the two stop plates; the positions of the two cut-off plates are reset through the cut-off component, when the two cut-off plates are reset to the preset positions, the rolling lining PTFE hose sleeve can be rotated, and when the cut-off plates are used for extruding the sleeve next time, the two corners, with the most serious extrusion deformation and compression, of the sleeve can be changed; the problem of fatigue fracture of the pipe sleeve caused by multiple times of compression of the corner position after the pipe sleeve is compressed is solved, and the change of the section of the compressed pipe sleeve is balanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a kind of rolling liner four fluorine anticorrosion valve. BACKGROUND

[0002] Valves are used to open and close pipelines, control flow direction, adjust and control the parameters (temperature, pressure and flow) of the delivered medium. According to its function, it can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid conveying systems, with functions such as shut-off, regulation, flow guidance, anti-backflow, pressure stabilization, flow splitting or overflow pressure relief. Valves used in fluid control systems range from the simplest shut-off valve to the most complex self-control system, with a wide variety of types and specifications.

[0003] Some common anticorrosion valve materials and coatings: stainless steel, copper alloy, polytetrafluoroethylene coating, cast steel valve, rubber-lined valve, the design of anticorrosion valve is also very important to ensure its smooth operation and prevent leakage. For example, the sealing structure of the valve, valve seat material and sealing material need to be selected according to the type of corrosive medium.

[0004] The pinch valve with rolling liner four fluorine pipe body in the prior art has good anticorrosion effect. The known pinch valve has: a valve part; a pipe body having a flow path formed inside and housed in the valve part; and a push part that deforms the pipe body by pushing it or releasing the push to open and close the flow path.

[0005] The principle is to use the valve stem gate to flatten the rolling liner four fluorine pipe sleeve in the valve to prevent liquid from passing through. However, since the circular pipe sleeve is gradually flattened and compressed, the cross-sectional change of the pipe sleeve is irregular during compression, which may cause fluid leakage. SUMMARY

[0006] To address the deficiencies of the prior art, the utility model provides a rolling liner four fluorine anticorrosion valve, aiming to at least alleviate the above problems to some extent.

[0007] The above technical purpose of the utility model is achieved by the following technical scheme:

[0008] A rolling liner four fluorine anticorrosion valve comprises:

[0009] A valve body having a cavity inside;

[0010] Two connecting pipes are provided at both ends of the valve body and communicate with the cavity;

[0011] A rolling liner four fluorine hose sleeve is provided in the valve body;

[0012] A cutoff plate is arranged in the valve body, the cutoff plate has two, the two cutoff plates are located in the cavity, and the rolling-liner PTFE hose sleeve is located between the two cutoff plates.

[0013] A cutoff component is arranged between the valve body and the cutoff plate for moving the position of the cutoff plate, the two cutoff plates move towards the rolling-liner PTFE hose sleeve, and the cutoff component can rotate the rolling-liner PTFE hose sleeve when moving the cutoff plate and resetting the cutoff plate to a preset position.

[0014] Preferably, the cutoff component comprises a first rack connected to one of the cutoff plates, a first gear engaged with the first rack is connected to the side wall of the cavity, and a second rack engaged with the first gear is connected to the other cutoff plate.

[0015] Preferably, the cutoff component further comprises a threaded pipe connected to one of the cutoff plates, and a lead screw threadedly connected with the threaded pipe is rotatably connected to the valve body.

[0016] Preferably, the top of the lead screw extends through the valve body to the top of the valve body and is connected with a rotating disc.

[0017] Preferably, two sealing pipes are rotatably connected to the two sides of the inside of the cavity, and the rolling-liner PTFE hose sleeve is connected to the two sealing pipes.

[0018] Preferably, a second gear is rotatably connected to the sealing pipe, a ratchet mechanism is arranged between the sealing pipe and the second gear, and a third rack engaged with the second gear is connected to the outer side wall of the threaded pipe.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] By setting the connecting pipe, in application, the pipe for conveying fluid can be connected to the connecting pipe at both ends of the valve body, and the fluid will flow through the pipe sleeve arranged in the cavity when passing through the valve body, and the fluid will not enter the cavity and contact the stop plate by using the rolling-lining Teflon hose sleeve, even if the conveyed fluid is corrosive, the normal use of the stop plate will not be affected by the internal corrosion performance of the rolling-lining Teflon hose, so that the purpose of improving the corrosion resistance is achieved, specifically, when stopping the flow of fluid, the operating personnel can move the position of the stop plate by using the stop part, the two stop plates are close to each other, and the rolling-lining Teflon hose sleeve between the two stop plates is extruded, the rolling-lining Teflon hose sleeve is deformed, until the two stop plates extrude the pipe sleeve, and the pipe sleeve is flattened to achieve the purpose of stopping the fluid and stopping the fluid, when opening, the position of the two stop plates is reset by using the stop part, and the rolling-lining Teflon hose sleeve can be rotated when the two stop plates are reset to the preset position, when the pipe sleeve is extruded by the stop plate next time, the two corners of the pipe sleeve that are most severely extruded and deformed can change, and the problem of pipe sleeve fatigue rupture caused by multiple compression of the corners after the pipe sleeve is compressed will not occur, the cross-sectional change of the pipe sleeve after compression is balanced, and the problem of fluid leakage caused by irregular cross-sectional change of the pipe sleeve during compression when the valve in the prior art is flattened and compressed is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of the utility model;

[0022] Figure 2 is the cavity structure schematic diagram of the utility model;

[0023] Figure 3 is the stop plate structure schematic diagram of the utility model;

[0024] Figure 4 is the sealing pipe structure schematic diagram of the utility model.

[0025] Reference signs:

[0026] 100, valve body; 101, cavity; 102, connecting pipe; 103, rolling-lining Teflon hose sleeve; 104, stop plate;

[0027] 200, first rack; 201, first gear; 202, second rack; 203, threaded pipe; 204, screw rod; 205, rotating disc;

[0028] 300, sealing pipe; 301, second gear; 302, ratchet mechanism; 303, third rack. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0030] Reference Figures 1-4 A rolling-liner four-fluorine anticorrosion valve, comprising:

[0031] A valve body 100, the valve body 100 is provided with a cavity 101;

[0032] Two connecting pipes 102 are arranged at two ends of the valve body 100 and are communicated with the cavity 101;

[0033] A rolling-liner four-fluorine hose sleeve 103 is arranged in the valve body 100;

[0034] Two stop plates 104 are arranged in the valve body 100, the two stop plates 104 are located in the cavity 101, and the rolling-liner four-fluorine hose sleeve 103 is located between the two stop plates 104;

[0035] A stop component is arranged between the valve body 100 and the stop plate 104 and is used for moving the position of the stop plate 104, the two stop plates 104 move towards the rolling-liner four-fluorine hose sleeve 103, and the stop component can rotate the rolling-liner four-fluorine hose sleeve 103 when the stop plate 104 is moved and reset to a preset position;

[0036] By setting the connecting pipe 102, in application, the pipe for conveying fluid can be connected to the connecting pipe 102 at both ends of the valve body 100, and the fluid will flow through the pipe sleeve arranged in the cavity 101 when passing through the valve body 100. The fluid will not enter the cavity 101 and contact the stop plate 104 by using the rolling-lining Teflon hose sleeve 103. Even if the conveyed fluid is corrosive, the internal corrosion performance of the rolling-lining Teflon hose will not affect the normal use of the stop plate 104, so that the purpose of improving the corrosion resistance can be achieved. Specifically, when stopping the flow of fluid, the operating personnel can move the position of the stop plate 104 by using the stop component, and the two stop plates 104 are moved to press the rolling-lining Teflon hose sleeve 103 therebetween. The rolling-lining Teflon hose sleeve 103 deforms until the two stop plates 104 press the pipe sleeve, and the pipe sleeve is flattened to achieve the purpose of stopping the flow of fluid and stopping the conveying of fluid. When opening, the position of the two stop plates 104 is reset by using the stop component, and the rolling-lining Teflon hose sleeve 103 can be rotated when the two stop plates 104 are reset to the preset position. When the pipe sleeve is pressed by the stop plate 104 next time, the two corners of the pipe sleeve that are most severely compressed and deformed can change, and the problem of fatigue rupture of the pipe sleeve caused by multiple compression of the corners after the pipe sleeve is compressed will not occur. The cross-sectional change of the pipe sleeve after compression is balanced, and the problem of fluid leakage caused by irregular cross-sectional change of the pipe sleeve during compression of the valve in the prior art is solved.

[0037] Further, the stop component includes a first rack 200 connected to one of the stop plates 104, a first gear 201 connected to the first rack 200 on the side wall of the cavity 101, and a second rack 202 connected to the first gear 201 on the other stop plate 104.

[0038] By setting the first gear 201, the position of one of the stop plates 104 can be moved in application. One stop plate 104 moves towards the rolling-lining Teflon hose sleeve 103, and the first gear 201 can be rotated by using the first rack 200. The rotation of the first gear 201 can move the other stop plate 104 through the second rack 202, so as to realize the movement of the two stop plates 104 towards each other to press the pipe sleeve and close the flow path, or the movement of the two stop plates 104 away from each other to open the flow path.

[0039] Further, the stop component further includes a threaded pipe 203 connected to one of the stop plates 104, and a lead screw 204 threadedly connected to the threaded pipe 203 and rotatably connected to the valve body 100.

[0040] By setting the lead screw 204, in application, the operator can rotate the lead screw 204, the lead screw 204 utilizes the force of the thread to make the threaded pipe 203 and one of the stop plates 104 move towards the pipe sleeve, thereby achieving the purpose of moving the position of the stop plate 104.

[0041] Further, the top of the lead screw 204 extends through the valve body 100 to the top of the valve body 100 and is connected with the rotating disc 205.

[0042] By setting the rotating disc 205, the rotating disc 205 can facilitate the operator to rotate the lead screw 204.

[0043] Further, the inside of the cavity 101 is rotatably connected with the sealing pipe 300 on both sides, and the rolling-liner Teflon hose sleeve is connected to the two sealing pipes 300.

[0044] By setting the sealing pipe 300, in application, the position of the sealing pipe 300 can be rotated, and the rolling-liner Teflon hose sleeve can be rotated by the rotation of the sealing pipe 300.

[0045] Further, the second gear 301 is rotatably connected to the sealing pipe 300, the ratchet mechanism 302 is arranged between the sealing pipe 300 and the second gear 301, and the outer side wall of the threaded pipe 203 is connected with the third rack 303 engaged with the second gear 301.

[0046] By setting the third rack 303, when the operator rotates the lead screw 204 by the rotating disc 205 to make the threaded pipe 203 move with the stop plate 104, the movement of the threaded pipe 203 can make the second gear 301 rotate through the third rack 303, the second gear 301 is idling outside the sealing pipe 300 through the ratchet mechanism 302, which does not affect the angle of the sealing pipe 300, when the threaded pipe 203 is reset by rotating the lead screw 204 in the opposite direction, the sealing pipe 300 can be rotated through the third rack 303, the second gear 301 and the ratchet mechanism 302, the rotation of the sealing pipe 300 can realize the rotation of the rolling-liner Teflon hose sleeve, so that the next stop plate 104 movement can extrude and compress the pipe sleeve, and the pipe sleeve will not form the same corner in the same place.

[0047] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A PTFE-lined corrosion-resistant valve, characterized in that, The utility model provides a valve body (100), which is provided with a cavity (101) in the valve body (100); two connecting pipes (102) are arranged at two ends of the valve body (100) and communicate with the cavity (101); a rolling-liner PTFE hose sleeve (103) is arranged in the valve body (100); two stop plates (104) are arranged in the valve body (100), the two stop plates (104) are located in the cavity (101), and the rolling-liner PTFE hose sleeve (103) is located between the two stop plates (104); a stop component is arranged between the valve body (100) and the stop plates (104) and is used for moving the positions of the stop plates (104), the two stop plates (104) move towards the rolling-liner PTFE hose sleeve (103), and the stop component can rotate the rolling-liner PTFE hose sleeve (103) when the stop plates (104) are moved and the stop plates (104) are reset to preset positions. The stop component comprises a first rack (200) connected to one of the stop plates (104), a first gear (201) engaged with the first rack (200) is arranged on the side wall of the cavity (101), and a second rack (202) engaged with the first gear (201) is arranged on the other stop plate (104). The stop component further comprises a threaded pipe (203) connected to one of the stop plates (104), and a screw rod (204) threadedly connected with the threaded pipe (203) is rotatably connected to the valve body (100). The top of the screw rod (204) extends through the valve body (100) to the top of the valve body (100) and is connected with a rotating disc (205). Two sealing pipes (300) are rotatably connected to the two sides of the inside of the cavity (101), and the rolling-liner PTFE hose sleeve is connected to the two sealing pipes (300). A second gear (301) is rotatably connected to the sealing pipe (300), a ratchet mechanism (302) is arranged between the sealing pipe (300) and the second gear (301), and a third rack (303) engaged with the second gear (301) is connected to the outer side wall of the threaded pipe (203).

2. A linerless fluoropolymer corrosion resistant valve according to claim 1, wherein, ​ 3. The valve according to claim 1, wherein the valve is a rolling diaphragm valve. ​ 4. The linerless fluoropolymer corrosion resistant valve of claim 3, wherein, ​ 5. The linerless fluoropolymer corrosion resistant valve of claim 3, wherein, ​ 6. A linerless fluoropolymer corrosion resistant valve according to claim 5, wherein, ​

Images