Corrosion-resistant and wear-resistant drain valve

Abstract

The utility model relates to the technical field of valve production, in particular to a corrosion-resistant and wear-resistant drain valve, which comprises a drain valve body, a valve rod is mounted on the drain valve body, and two ends of the drain valve body are coaxially connected with a liquid inlet intubation tube and a drain intubation tube which are used for being connected with an external pipeline. Due to the fact that the liquid inlet inserting pipe and the liquid discharging inserting pipe are coaxially connected to the two ends of the liquid discharging valve body, the liquid discharging valve can be conveniently connected with an external pipeline, input and output of liquid are achieved, the detachable anti-corrosion inner rings are installed in the liquid inlet inserting pipe and the liquid discharging inserting pipe, the pipeline can be effectively prevented from being corroded by the liquid, and the anti-corrosion performance of the liquid discharging valve is improved. The anti-collision and wear-resistant protective shell arranged on the outer wall of the drain valve body not only enhances the anti-collision performance of the drain valve, but also improves the wear resistance of the drain valve, so that the drain valve can keep a good working state in a severe environment, the anti-corrosion inner layer arranged on the inner wall of the drain valve body can prevent liquid from corroding the interior of the valve body, and the service life of the valve body is prolonged. Therefore, the long-term stable operation of the drain valve is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of valve production, in particular to a corrosion-resistant and wear-resistant drain valve. Background Art

[0002] Drain valves are mainly used to control the flow of liquids and are commonly found in various industrial fluid handling systems. Traditional drain valves are usually composed of basic components such as valve body, valve seat, valve disc and valve stem. Traditional drain valves can meet basic liquid control needs to a certain extent, but in practical applications, especially when dealing with corrosive liquids or used in harsh environments, they have some obvious defects:

[0003] Insufficient corrosion resistance: The materials and designs of traditional drain valves are often unable to withstand the erosion of corrosive liquids for a long time, resulting in corrosion inside and outside the valve. This not only affects the sealing performance of the valve, but may also cause the valve to fail and even cause safety accidents.

[0004] Poor wear resistance: During the frequent opening and closing process, the sealing surface of the traditional drain valve is easily worn, resulting in reduced sealing performance and even leakage. The wear problem is particularly serious when handling liquids containing solid particles. Utility Model Content

[0005] The utility model aims to provide a corrosion-resistant and wear-resistant drain valve to solve the problem of poor corrosion resistance and wear resistance of the drain valve in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A corrosion-resistant and wear-resistant drain valve comprises a drain valve body, a valve stem is installed on the drain valve body, two ends of the drain valve body are coaxially connected with a liquid inlet insert and a liquid discharge insert for connecting an external pipeline, and a detachable anti-corrosion inner ring is installed in the liquid inlet insert and the liquid discharge insert;

[0008] An anti-collision and wear-resistant protective shell is arranged on the outer wall of the drain valve body, and an anti-corrosion inner layer is arranged on the inner wall of the drain valve body;

[0009] The end of the detachable anti-corrosion inner ring is coaxially connected to a limiting ring, and the diameter of the limiting ring is larger than the diameter of the detachable anti-corrosion inner ring.

[0010] Preferably, connecting flanges are coaxially mounted on both ends of the drain valve body, and the diameter of the connecting flanges is larger than the diameter of the drain valve body.

[0011] Preferably, the protective shell is made of nickel-based alloy or Stellite alloy and has a thickness of 2-4 mm.

[0012] Preferably, the anti-corrosion inner layer is made of epoxy resin coating, polytetrafluoroethylene coating or ceramic coating, and has a thickness of 0.25-0.5 mm.

[0013] Preferably, a valve handle is installed on the valve stem, the end of the valve handle is connected to the top of the valve stem through a mounting sleeve, and the valve stem and the mounting sleeve rotate synchronously.

[0014] Preferably, the inner walls of the liquid inlet and outlet tubes are both provided with internal thread grooves, and the ends of the detachable anti-corrosion inner ring are provided with threaded connectors that are adapted to the size of the internal thread grooves and are threadedly connected.

[0015] Preferably, the length of the liquid inlet cannula and the liquid outlet cannula is at least 2 cm.

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

[0017] 1. In the corrosion-resistant and wear-resistant drain valve, the drain valve can be conveniently connected to the external pipeline by coaxially connecting the liquid inlet pipe and the liquid discharge pipe at the two ends of the drain valve body to realize the input and output of liquid. The detachable anti-corrosion inner ring installed in the liquid inlet pipe and the liquid discharge pipe can effectively prevent the liquid from corroding the pipeline and extend the service life of the drain valve. The anti-collision and wear-resistant protective shell arranged on the outer wall of the drain valve body not only enhances the anti-collision performance of the drain valve, but also improves its wear resistance, so that the drain valve can maintain a good working condition even in harsh environments. The anti-corrosion inner layer arranged on the inner wall of the drain valve body can prevent the liquid from corroding the inside of the valve body, thereby ensuring the long-term stable operation of the drain valve.

[0018] 2. In this corrosion-resistant and wear-resistant drain valve, connecting flanges are coaxially installed at both ends of the drain valve body. The diameter of the connecting flange is larger than the diameter of the drain valve body, which not only enhances the stability of the connection between the drain valve and the external pipeline, but also improves the sealing performance, effectively preventing liquid leakage.

[0019] 3. In this corrosion-resistant and wear-resistant drain valve, the protective shell is made of nickel-based alloy or Stellite alloy, which has excellent corrosion resistance and wear resistance, so that the drain valve can operate stably for a long time in harsh working environment. The anti-corrosion inner layer adopts epoxy resin coating, polytetrafluoroethylene coating or ceramic coating, which has excellent anti-corrosion performance and can effectively prevent liquid from corroding the inside of the drain valve body. 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 1It 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 utility model.

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

[0025] 10. Drain valve body; 11. Connecting flange; 12. Protective shell; 13. Anti-corrosion inner layer;

[0026] 20. Valve stem; 21. Valve handle; 22. Mounting sleeve;

[0027] 30. Liquid intubation;

[0028] 40. Drainage cannula; 41. Internal thread groove;

[0029] 50. Removable anti-corrosion inner ring; 51. Threaded connector; 52. Limiting ring. 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] A corrosion-resistant and wear-resistant drain valve, such as Figure 1-Figure 3As shown, it includes a drain valve body 10, on which a valve stem 20 is installed, and the two ends of the drain valve body 10 are coaxially connected with a liquid inlet cannula 30 and a liquid discharge cannula 40 for connecting to an external pipeline, and a detachable anti-corrosion inner ring 50 is installed in the liquid inlet cannula 30 and the liquid discharge cannula 40; an anti-collision and wear-resistant protective shell 12 is provided on the outer wall of the drain valve body 10, and an anti-corrosion inner layer 13 is provided on the inner wall of the drain valve body 10; the end of the detachable anti-corrosion inner ring 50 is coaxially connected to a limiting ring 52, and the diameter of the limiting ring 52 is larger than the diameter of the detachable anti-corrosion inner ring 50, through the liquid inlet cannula 30 and the liquid discharge cannula 40 coaxially connected at the two ends of the drain valve body 10 Tube 40 allows the drain valve to be easily connected to the external pipeline to realize the input and output of liquid. The detachable anti-corrosion inner ring 50 installed in both the liquid inlet tube 30 and the drain tube 40 can effectively prevent the liquid from corroding the pipeline and extend the service life of the drain valve. The anti-collision and wear-resistant protective shell 12 arranged on the outer wall of the drain valve body 10 not only enhances the anti-collision performance of the drain valve, but also improves its wear resistance, so that the drain valve can maintain a good working condition even in harsh environments. The anti-corrosion inner layer 13 arranged on the inner wall of the drain valve body 10 can prevent the liquid from corroding the inside of the valve body, thereby ensuring the long-term stable operation of the drain valve.

[0033] It is worth mentioning that connecting flanges 11 are coaxially installed at both ends of the drain valve body 10. The diameter of the connecting flanges 11 is larger than the diameter of the drain valve body 10, which not only enhances the stability of the connection between the drain valve and the external pipeline, but also improves the sealing performance, effectively preventing liquid leakage.

[0034] Furthermore, the protective shell 12 is made of nickel-based alloy or Stellite alloy and has a thickness of 2-4mm. It has excellent corrosion resistance and wear resistance, so that the drain valve can operate stably for a long time in harsh working environments. The anti-corrosion inner layer 13 adopts epoxy resin coating, polytetrafluoroethylene coating or ceramic coating and has a thickness of 0.25-0.5mm. It has excellent anti-corrosion performance and can effectively prevent liquid from corroding the inside of the drain valve body.

[0035] Specifically, a valve handle 21 is installed on the valve stem 20, which makes the operation of the valve more convenient. The operator can easily control the opening and closing of the valve through the valve handle 21. The end of the valve handle 21 is connected to the top of the valve stem 20 through the mounting sleeve 22, and the valve stem 20 and the mounting sleeve 22 rotate synchronously, which is not only stable and reliable, but also easy to maintain and replace.

[0036] In addition, an internal thread groove 41 is provided on the inner wall of the liquid inlet tube 30 and the liquid discharge tube 40, and a threaded connector 51 which is threadedly connected and matches the size of the internal thread groove 41 is provided at the end of the removable anti-corrosion inner ring, making the installation and disassembly of the anti-corrosion inner ring 50 more convenient and improving the maintenance efficiency.

[0037] It is worth noting that the length of the liquid inlet insert tube 30 and the liquid outlet insert tube 40 is at least 2 cm, which ensures a sufficient connection length and improves the stability of the connection.

[0038] The working principle of this corrosion-resistant and wear-resistant drain valve: the operator uses pipe connectors to connect the liquid inlet pipe 30 and the liquid discharge pipe 40 to the external input and output pipes to ensure that the connection is well sealed to prevent liquid leakage. After the connection is completed, the entire drain valve is checked for sealing to ensure that there is no leakage. Regularly check the various components of the drain valve, especially the integrity of the removable anti-corrosion inner ring 50 and the anti-corrosion inner layer 13.

[0039] 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 and wear-resistant drain valve, comprising a drain valve body (10), characterized in that: A valve stem (20) is installed on the drain valve body (10), and two ends of the drain valve body (10) are coaxially connected with a liquid inlet insert (30) and a liquid discharge insert (40) for connecting to an external pipeline, and a detachable anti-corrosion inner ring (50) is installed in both the liquid inlet insert (30) and the liquid discharge insert (40); An anti-collision and wear-resistant protective shell (12) is arranged on the outer wall of the drain valve body (10), and an anti-corrosion inner layer (13) is arranged on the inner wall of the drain valve body (10); The end of the detachable anti-corrosion inner ring (50) is coaxially connected to a limiting ring (52), and the diameter of the limiting ring (52) is greater than the diameter of the detachable anti-corrosion inner ring (50).

2. The corrosion-resistant and wear-resistant drain valve according to claim 1, characterized in that: Connecting flanges (11) are coaxially mounted on both ends of the liquid discharge valve body (10); the diameter of the connecting flange (11) is greater than the diameter of the liquid discharge valve body (10).

3. The corrosion-resistant and wear-resistant drain valve according to claim 1, characterized in that: The protective shell (12) is made of nickel-based alloy or Stellite alloy and has a thickness of 2-4 mm.

4. The corrosion-resistant and wear-resistant drain valve according to claim 1, characterized in that: The anti-corrosion inner layer (13) is made of epoxy resin coating, polytetrafluoroethylene coating or ceramic coating, and has a thickness of 0.25-0.5 mm.

5. The corrosion-resistant and wear-resistant drain valve according to claim 1, characterized in that: A valve handle (21) is installed on the valve stem (20), and the end of the valve handle (21) is connected to the top of the valve stem (20) through a mounting sleeve (22), and the valve stem (20) and the mounting sleeve (22) rotate synchronously.

6. The corrosion-resistant and wear-resistant drain valve according to claim 1, characterized in that: The inner walls of the liquid inlet insert (30) and the liquid discharge insert (40) are both provided with internal thread grooves (41), and the end of the detachable anti-corrosion inner ring is provided with a threaded connector (51) that matches the size of the internal thread groove (41) and is threadedly connected.

7. The corrosion-resistant and wear-resistant drain valve according to claim 1, characterized in that: The lengths of the liquid inlet cannula (30) and the liquid outlet cannula (40) are at least 2 cm.

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