Corrosion-resistant polytetrafluoroethylene valve

Abstract

The utility model relates to the technical field of valve accessories, in particular to a corrosion-resistant polytetrafluoroethylene valve which comprises a valve pipe and a valve handle, and brass connectors are coaxially installed at the two ends of the valve pipe. The valve pipe comprises a polytetrafluoroethylene main body layer, an anti-corrosion coating is arranged on the outer wall of the polytetrafluoroethylene main body layer, and an anti-corrosion embedded sleeve is arranged on the inner wall of the polytetrafluoroethylene main body layer in a sleeving mode. Through the arrangement of the polytetrafluoroethylene main body layer, the valve has excellent corrosion resistance and can resist corrosion of various chemical substances, the long-time use of the valve is ensured, the corrosion resistance of the valve is further enhanced through the corrosion-resistant coating arranged on the outer wall, and the corrosion resistance of the valve is improved particularly in a severe working environment. The service life of the valve can be effectively prolonged, and the corrosion-resistant embedded sleeve is arranged on the inner wall of the polytetrafluoroethylene main body layer in a sleeving mode, so that the corrosion resistance of the inner wall of the valve is improved, and the stable performance of the valve can be kept under the extreme conditions of high pressure, high temperature and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of valve accessories, in particular to a corrosion-resistant polytetrafluoroethylene valve. Background Art

[0002] In the chemical, petroleum, pharmaceutical and other industries, valves are indispensable key components in fluid control systems, and the corrosiveness of the medium is a common problem in these industries. Traditional valve materials are often difficult to resist the erosion of corrosive media such as strong acids and alkalis, resulting in a shortened valve life and even safety accidents. In the field of valves, the excellent corrosion resistance of polytetrafluoroethylene makes it an ideal valve material that can meet the needs of various corrosive media processing, but today's polytetrafluoroethylene valves are made of pure polytetrafluoroethylene materials, and their corrosion resistance and impact resistance are low. Utility Model Content

[0003] The utility model aims to provide a corrosion-resistant polytetrafluoroethylene valve to solve the problem that the polytetrafluoroethylene valves mentioned in the background art are all made of pure polytetrafluoroethylene material and have low corrosion resistance and impact resistance.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A corrosion-resistant polytetrafluoroethylene valve comprises a valve tube and a valve handle, wherein brass joints are coaxially mounted on both ends of the valve tube;

[0006] A valve stem is installed on the valve pipe, the bottom of the valve stem is installed on the valve core, and a limiting seat for limiting the valve handle is also installed on the top of the outer wall of the valve pipe;

[0007] The valve tube comprises a polytetrafluoroethylene main body layer, an anti-corrosion coating is arranged on the outer wall of the polytetrafluoroethylene main body layer, and a corrosion-resistant inner nest is sleeved on the inner wall of the polytetrafluoroethylene main body layer.

[0008] Preferably, a mounting socket is coaxially mounted on the top of the valve stem, and a locking screw hole is provided at the center of the top surface of the mounting socket.

[0009] Preferably, a fixed socket which is adapted to the size of the mounting socket and is plug-fitted therewith is provided at the center of the valve handle.

[0010] Preferably, a locking top seat is installed on the top surface of the valve handle, and a screw rod that matches the size of the locking screw hole and is threadedly connected is coaxially installed at the center of the bottom surface of the locking top seat.

[0011] Preferably, a metal reinforcement layer for enhancing impact resistance is installed in the polytetrafluoroethylene main body layer.

[0012] Preferably, the metal reinforcement layer is made of stainless steel and has a thickness of 1-3 mm.

[0013] Preferably, the anti-corrosion coating is a Teflon coating with a thickness of 0.25-0.6 mm.

[0014] Preferably, the corrosion-resistant inner nest is made of brass and has a thickness of 1-3 mm.

[0015] Preferably, a shock-absorbing ring seat is provided between the locking top seat and the top surface of the valve handle.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. In this corrosion-resistant polytetrafluoroethylene valve, the polytetrafluoroethylene main layer is set, so that the valve has excellent corrosion resistance, can resist the erosion of various chemical substances, and ensure the long-term use of the valve. The anti-corrosion coating arranged on the outer wall further enhances the anti-corrosion ability of the valve, especially in harsh working environments, and can effectively extend the service life of the valve. The corrosion-resistant inner nesting set on the inner wall of the polytetrafluoroethylene main layer not only improves the corrosion resistance of the inner wall of the valve, but also enables the valve to maintain stable performance under extreme conditions such as high pressure and high temperature. The setting of the brass joint enables the valve to be easily connected to other pipes or equipment. At the same time, the brass material also has a certain corrosion resistance, which ensures the reliability of the connection.

[0018] 2. In this corrosion-resistant polytetrafluoroethylene valve, a locking top seat is installed on the top surface of the valve handle, and a screw rod that matches the size of the locking screw hole and is threaded is coaxially installed at the center of the bottom surface of the locking top seat, which is convenient for installation or disassembly, enhances the connection strength between the valve handle and the valve stem, and makes the valve not easy to loosen or fall off during operation.

[0019] 3. In this corrosion-resistant polytetrafluoroethylene valve, a metal reinforcement layer for enhancing impact resistance is installed in the polytetrafluoroethylene main layer. The metal reinforcement layer is made of stainless steel, which effectively enhances the impact resistance of the valve, so that the valve can maintain structural integrity when subjected to external force impact, thereby improving the safety and durability of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, further detailed explanation is provided, but the accompanying drawings do not constitute a limitation to the present invention.

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

[0022] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the valve tube of the utility model.

[0024] The meaning of the symbols in the figure:

[0025] 10. Valve tube; 11. Limit seat; 12. Valve stem; 13. Valve core; 14. Mounting socket; 15. Locking screw hole;

[0026] 101. Polytetrafluoroethylene main layer; 102. Metal reinforcement layer; 103. Anti-corrosion coating; 104. Corrosion-resistant inner nesting;

[0027] 20. Brass connector;

[0028] 30. Valve handle; 31. Fixed socket; 32. Shock-absorbing ring seat;

[0029] 40. Lock the top seat; 41. Screw. DETAILED DESCRIPTION

[0030] The following will combine the embodiments of the utility model and the drawings of the specification to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that the terms "center", "vertical", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] Corrosion-resistant PTFE valves, such as Figure 1-Figure 3As shown, it includes a valve tube 10 and a valve handle 30, and brass joints 20 are coaxially installed at both ends of the valve tube 10; a valve stem 12 is installed on the valve tube 10, and the bottom of the valve stem 12 is installed on the valve core 13, and a limiting seat 11 for limiting the valve handle 30 is also installed on the top of the outer wall of the valve tube 10; the valve tube 10 includes a polytetrafluoroethylene main body layer 101, and an anti-corrosion coating 103 is arranged on the outer wall of the polytetrafluoroethylene main body layer 101, and a corrosion-resistant inner nest 104 is sleeved on the inner wall of the polytetrafluoroethylene main body layer 101. Through the setting of the polytetrafluoroethylene main body layer 101, the valve has excellent corrosion resistance and can resist multiple The erosion of various chemical substances ensures the long-term use of the valve. The anti-corrosion coating 103 arranged on the outer wall further enhances the anti-corrosion ability of the valve, especially in harsh working environments, and can effectively extend the service life of the valve. The corrosion-resistant inner nest 104 sleeved on the inner wall of the polytetrafluoroethylene main layer 101 not only improves the corrosion resistance of the inner wall of the valve, but also enables the valve to maintain stable performance under extreme conditions such as high pressure and high temperature. The setting of the brass joint 20 enables the valve to be easily connected to other pipelines or equipment. At the same time, the brass material also has a certain corrosion resistance, which ensures the reliability of the connection.

[0033] Furthermore, a mounting socket 14 is coaxially installed on the top of the valve stem 12, a locking screw hole 15 is opened in the center of the top surface of the mounting socket 14, a fixing socket 31 which is adapted to the size of the mounting socket 14 and is plug-matched is opened in the center of the valve handle 30, a locking top seat 40 is installed on the top surface of the valve handle 30, and a screw 41 which is adapted to the size of the locking screw hole 15 and is threadedly connected is coaxially installed in the center of the bottom surface of the locking top seat 40, which is convenient for installation or disassembly, enhances the connection strength between the valve handle 30 and the valve stem 12, and makes the valve not easy to loosen or fall off during operation.

[0034] Specifically, a metal reinforcement layer 102 for enhancing impact resistance is installed in the polytetrafluoroethylene main layer 101. The metal reinforcement layer 102 is made of stainless steel and has a thickness of 1-3 mm, which effectively enhances the impact resistance of the valve, so that the valve can maintain structural integrity when subjected to external force impact, thereby improving the safety and durability of the valve.

[0035] Among them, the anti-corrosion coating 103 adopts Teflon coating with a thickness of 0.25-0.6mm, has excellent corrosion resistance and wear resistance, and can effectively protect the valve from corrosion by chemical substances. The corrosion-resistant inner nest 104 is made of brass material with a thickness of 1-3mm, has good corrosion resistance, and can further improve the corrosion resistance of the inner wall of the valve.

[0036] In addition, a shock-absorbing ring seat 32 is provided between the locking top seat 40 and the top surface of the valve handle 30, which can effectively reduce the vibration and impact generated when operating the valve and improve the stability and comfort of the operation.

[0037] The working principle of this corrosion-resistant polytetrafluoroethylene valve is as follows: the operator connects the valve to other pipelines or equipment through the brass joint 20, rotates the valve handle 30, and drives the valve core 13 to move in the valve tube 10 through the valve stem 12 to open and close the valve. The polytetrafluoroethylene main layer 101 is provided, so that the valve has excellent corrosion resistance and can resist the erosion of various chemical substances, ensuring the long-term use of the valve. The anti-corrosion coating 103 provided on the outer wall further enhances the anti-corrosion ability of the valve, especially in harsh working environments, and can effectively extend the service life of the valve. The corrosion-resistant inner nest 104 provided on the inner wall of the polytetrafluoroethylene main layer 101 not only improves the corrosion resistance of the inner wall of the valve, but also enables the valve to maintain stable performance under extreme conditions such as high pressure and high temperature.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A corrosion-resistant polytetrafluoroethylene valve, comprising a valve tube (10) and a valve handle (30), characterized in that: Brass joints (20) are coaxially mounted on both ends of the valve tube (10); A valve stem (12) is installed on the valve tube (10), the bottom of the valve stem (12) is installed on the valve core (13), and a limiting seat (11) for limiting the valve handle (30) is also installed on the top of the outer wall of the valve tube (10); The valve tube (10) comprises a polytetrafluoroethylene main body layer (101), an anti-corrosion coating (103) is provided on the outer wall of the polytetrafluoroethylene main body layer (101), and a corrosion-resistant inner nesting (104) is sleeved on the inner wall of the polytetrafluoroethylene main body layer (101).

2. The corrosion-resistant polytetrafluoroethylene valve according to claim 1, characterized in that: A mounting socket (14) is coaxially mounted on the top of the valve stem (12), and a locking screw hole (15) is provided at the center of the top surface of the mounting socket (14).

3. The corrosion-resistant polytetrafluoroethylene valve according to claim 2, characterized in that: The center of the valve handle (30) is provided with a fixed plug hole (31) that matches the size of the installation socket (14) and is plug-fitted.

4. The corrosion-resistant polytetrafluoroethylene valve according to claim 3, characterized in that: A locking top seat (40) is installed on the top surface of the valve handle (30), and a screw (41) that matches the size of the locking screw hole (15) and is threadedly connected is coaxially installed at the center of the bottom surface of the locking top seat (40).

5. The corrosion-resistant polytetrafluoroethylene valve according to claim 1, characterized in that: A metal reinforcement layer (102) for enhancing impact resistance is installed in the polytetrafluoroethylene main body layer (101).

6. The corrosion-resistant polytetrafluoroethylene valve according to claim 5, characterized in that: The metal reinforcement layer (102) is made of stainless steel and has a thickness of 1-3 mm.

7. The corrosion-resistant polytetrafluoroethylene valve according to claim 1, characterized in that: The anti-corrosion coating (103) is a Teflon coating with a thickness of 0.25-0.6 mm.

8. The corrosion-resistant polytetrafluoroethylene valve according to claim 1, characterized in that: The corrosion-resistant inner nest (104) is made of brass and has a thickness of 1-3 mm.

9. The corrosion-resistant polytetrafluoroethylene valve according to claim 4, characterized in that: A shock-absorbing ring seat (32) is provided between the locking top seat (40) and the top surface of the valve handle (30).

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