Valve and anti-corrosion structure

Abstract

The utility model provides a valve and anti -corrosion structure, include: valve body, the driver for driving valve stem is installed to valve body upper side, valve stem sleeve is arranged to valve body upper side, valve stem is slidably installed in valve stem sleeve inside, the connecting rod is provided with to driver downside, the connecting rod lower extreme is fixedly connected with valve stem upper end through the shaft coupling, compares with prior art, the utility model has the following beneficial effect: through setting valve stem sleeve, sealing bush plug, scraper ring and oil storage cover, lubricating oil will directly fall on oil storage cover, and the lubricating oil is then fallen to the scraper ring, and is discharged through the oil way, when the lubricating oil appears in the oil way, stop filling lubricating oil, and wait for the lubricating oil to discharge, and then can seal the oil way, and the oil storage cover will evenly smear lubricating oil to the valve stem outer wall, and then forms a layer of lubricating oil film, solves the problem that the valve stem is easy to wear and corrode, ensures the service life and use stability of valve stem.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and specifically relates to a valve and a rust-proof structure. Background Technology

[0002] Existing valves have several significant drawbacks in terms of stem rust prevention. First, due to prolonged exposure to humid environments, especially in chemical and water treatment processes, valve stems are highly susceptible to oxidation, leading to surface rust. This not only affects appearance but also reduces the mechanical strength of the stem and shortens its service life. Second, traditional valves often use ordinary carbon steel for the stem, which has poor corrosion resistance. Even with surface treatments such as galvanizing or applying rust-preventive oil, it is difficult to effectively prevent the penetration of corrosive media, especially under high temperature and high pressure conditions, where the protective layer is prone to failure. Furthermore, the dynamic friction between the valve stem and packing accelerates coating wear, exposing the base metal and causing localized corrosion.

[0003] Conventional solutions include using stainless steel valve stems, applying a coating to the surface, or spraying anti-corrosion paint. However, these methods are costly and have limitations under complex operating conditions. For example, although stainless steel is highly corrosion-resistant, it can still experience pitting corrosion in environments containing chloride ions. Furthermore, coatings may crack due to temperature changes or mechanical stress, leading to a decrease in protective effectiveness. Therefore, we aim to design a valve with a novel structure to address this problem. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a valve and a rust-proof structure to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a valve and a rust-proof structure, comprising: a valve body, an actuator for driving a valve stem is installed on the upper side of the valve body, a valve stem sleeve is provided on the upper side of the valve body, a valve stem is slidably installed inside the valve stem sleeve, a connecting rod is provided on the lower side of the actuator, and the lower end of the connecting rod is fixedly connected to the upper end of the valve stem through a coupling;

[0006] A sealing plug is threadedly installed on the upper side of the valve stem sleeve, an oil reservoir sleeve is installed inside the upper side of the valve stem sleeve, and a scraper ring for scraping oil off the valve stem is installed at the bottom of the valve stem sleeve, with the scraper ring positioned at the bottom of the oil reservoir sleeve.

[0007] In a preferred embodiment, a lubrication chamber is provided inside the upper side of the valve stem sleeve. An oil passage is provided at a 45-degree angle from the bottom right side of the lubrication chamber to the lower right to discharge excess lubricating oil. When necessary, the lubricating oil accumulated at the bottom of the lubrication chamber can be discharged through the oil passage to prevent it from accumulating too much and eventually penetrating into the valve body.

[0008] In a preferred embodiment, the end of the oil passage is horizontally positioned near the outer wall of the valve stem sleeve and is threaded with a screw for movable sealing.

[0009] In a preferred embodiment, the upper surface of the sealing sleeve is provided with multiple countersunk holes for installing countersunk screws, and the bottom of each countersunk hole is formed by a downward-pointing oil injection hole for injecting lubricating oil into the lubrication cavity.

[0010] In a preferred embodiment, the plurality of countersunk holes are arranged in an annular structure, and the plurality of oil injection holes on their lower side are also arranged in an annular structure and communicate with the upper side of the lubrication cavity.

[0011] In a preferred embodiment, the oil reservoir sleeve is a tubular structure made of wear-resistant sponge material. The inner wall of the oil reservoir sleeve is slidably connected to the outer wall of the valve stem. The oil reservoir sleeve can store excess lubricating oil, preventing it from accumulating at the bottom of the lubrication cavity, so that the valve stem can be lubricated evenly.

[0012] In a preferred embodiment, the upper side of the scraper ring is recessed downward to form a groove with an annular structure, and a notch is provided on the side near the oil passage to guide the oil into the oil passage. The height of the upper side of the oil passage is flush with the bottom of the notch.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. By setting a valve stem sleeve, sealing plug, scraper ring and oil reservoir sleeve, the lubricating oil will fall directly onto the oil reservoir sleeve, while the excess lubricating oil will fall onto the scraper ring and be discharged through the oil passage. When lubricating oil appears in the oil passage, the lubricating oil is stopped and the excess lubricating oil is allowed to be discharged. Then the oil passage can be sealed. The oil reservoir sleeve will evenly coat the outer wall of the valve stem with lubricating oil, thereby forming a lubricating oil film, which solves the problem of easy wear and corrosion of the valve stem and ensures the service life and stability of the valve stem.

[0014] 2. The oil passage design ensures that the constantly moving valve stem will continuously scrape off excess lubricating oil under the action of the scraper ring, which will then accumulate on the upper side of the scraper ring. This portion of lubricating oil can be discharged when necessary under the action of the oil passage, preventing it from accumulating too much and eventually seeping into the valve body. 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 1This is a schematic diagram of the overall structure of a valve and anti-corrosion structure according to the present invention.

[0017] Figure 2 This is a schematic cross-sectional view of a valve and its anti-corrosion structure according to the present invention.

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A in the middle.

[0019] Figure 4 This is a schematic diagram of a valve and a sealing sleeve with an anti-corrosion structure according to the present invention.

[0020] In the diagram, 100-valve body, 110-valve stem sleeve, 111-oil passage, 120-valve stem, 130-sealing plug, 131-countersunk screw, 132-oil injection hole, 140-scraper ring, 150-oil reservoir sleeve;

[0021] 200 - Driver, 210 - Connecting rod. Detailed Implementation

[0022] 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 protection scope of the present utility model.

[0023] As the first embodiment of this utility model:

[0024] Please see Figures 1 to 4 A valve and a rust-proof structure, comprising: a valve body 100, an actuator 200 for driving a valve stem 120 mounted on the upper side of the valve body 100, a valve stem sleeve 110 provided on the upper side of the valve body 100, a valve stem 120 slidably mounted inside the valve stem sleeve 110, and a connecting rod 210 provided on the lower side of the actuator 200, the lower end of the connecting rod 210 being fixedly connected to the upper end of the valve stem 120 via a coupling;

[0025] A sealing plug 130 is threadedly installed on the upper side of the valve stem sleeve 110. An oil reservoir sleeve 150 is installed inside the upper side of the valve stem sleeve 110. A scraper ring 140 for scraping oil off the valve stem 120 is installed at the bottom of the valve stem sleeve 110. The scraper ring 140 is located at the bottom of the oil reservoir sleeve 150.

[0026] The upper side of the valve stem sleeve 110 is provided with a lubrication chamber. The bottom right side of the lubrication chamber is inclined at 45 degrees to the lower right and has an oil passage 111 for draining excess lubricating oil. When necessary, the lubricating oil accumulated at the bottom of the lubrication chamber can be drained through the oil passage 111 to prevent it from accumulating too much and eventually penetrating into the valve body 100.

[0027] The end of the oil passage 111 is horizontally positioned near the outer wall of the valve stem sleeve 110 and is threaded with a screw for movable sealing.

[0028] Specifically, the oil passage 111 is designed so that, in actual use, the constantly moving valve stem 120 will continuously scrape off excess lubricating oil under the action of the scraper ring 140, which will then accumulate on the upper side of the scraper ring 140. This part of the lubricating oil can be discharged when necessary under the action of the oil passage 111, preventing it from accumulating too much and eventually penetrating into the valve body 100.

[0029] As a second embodiment of this utility model:

[0030] Please see Figures 1 to 4 The upper surface of the sealing sleeve 130 has multiple countersunk holes for installing countersunk screws 131. Each countersunk hole has a bottom that extends downward to form an oil injection hole 132 for injecting lubricating oil into the lubrication cavity.

[0031] Multiple countersunk holes are arranged in a ring structure, and multiple oil injection holes 132 on their lower side are also arranged in a ring structure and connected to the upper side of the lubrication cavity.

[0032] The oil reservoir sleeve 150 is a tubular structure made of wear-resistant sponge material. The inner wall of the oil reservoir sleeve 150 is slidably connected to the outer wall of the valve stem 120. The oil reservoir sleeve 150 can store excess lubricating oil and prevent it from accumulating at the bottom of the lubrication chamber, so that the valve stem 120 can be lubricated evenly.

[0033] The scraper ring 140 has a groove formed by a downward indentation on the upper side, and a notch is provided on the side near the oil passage 111 to guide the oil into the oil passage 111. The height of the upper side of the oil passage 111 is flush with the bottom of the notch.

[0034] Based on the first embodiment described above, further, by setting up a valve stem sleeve 110, a sealing plug 130, a scraper ring 140, and an oil reservoir sleeve 150, in actual use, before use, the countersunk screw 131 is opened, and lubricating oil is injected into multiple oil injection holes 132. The lubricating oil will fall directly onto the oil reservoir sleeve 150, while excess lubricating oil will fall onto the scraper ring 140 and be discharged through the oil passage 111. When lubricating oil appears in the oil passage 111, the addition of lubricating oil is stopped, and the excess lubricating oil is allowed to be discharged. Then the oil passage 111 can be sealed. The oil reservoir sleeve 150 will evenly coat the outer wall of the valve stem 120 with lubricating oil, thereby forming a lubricating oil film, which solves the problem of easy wear and corrosion of the valve stem 120, and ensures the service life and operational stability of the valve stem.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve and anti-corrosion structure comprising: The utility model relates to a valve body (100), its characterized in being equipped with the driver (200) for driving valve stem (120) on the valve body (100) upside, be equipped with valve stem sleeve (110) on the valve body (100) upside, be equipped with valve stem (120) inside slidingly installed valve stem sleeve (110), be equipped with connecting rod (210) on the driver (200) downside, the connecting rod (210) lower end is fixedly connected with valve stem (120) upper end through the shaft coupling. The valve stem sleeve (110) upside is equipped with sealing sleeve plug (130) thread sealingly, the valve stem sleeve (110) upside is equipped with oil storage sleeve (150) inside, the valve stem sleeve (110) bottom is equipped with scraping ring (140) for scraping the oil liquid on valve stem (120), and the scraping ring (140) is placed in the bottom of oil storage sleeve (150).

2. The valve and anti-corrosion structure according to claim 1, characterized in that: The valve stem sleeve (110) upside is equipped with lubricating cavity inside, and the lubricating cavity bottom right side is inclined forty-five degrees to the right lower side and is provided with oil channel (111) for discharging excess lubricating oil.

3. The valve and anti-corrosion structure of claim 2, wherein: The oil channel (111) end is close to the horizontal position of valve stem sleeve (110) outer wall and is screw mounted screw for movable seal.

4. The valve and anti-corrosion structure of claim 1, wherein: The sealing sleeve plug (130) upper surface is downwardly provided with a plurality of countersunk holes for mounting countersunk screws (131), and each countersunk hole bottom is downwardly formed with an oil injection hole (132) for injecting lubricating oil into the lubricating cavity.

5. The valve and anti-corrosion structure according to claim 4, characterized in that: A plurality of the countersunk holes are arranged in an annular structure, and the plurality of oil injection holes (132) on the lower side are also arranged in an annular structure and communicate with the upper side of the lubricating cavity.

6. The valve and anti-corrosion structure of claim 1, wherein: The oil storage sleeve (150) is a tubular structure made of wear-resistant sponge material, and the inner wall of the oil storage sleeve (150) is in sliding connection with the outer wall of the valve stem (120).

7. The valve and anti-corrosion structure of claim 1, wherein: The scraping ring (140) upside is downwardly recessed to form an annular groove, and a notch is provided on the side close to the oil channel (111) for guiding the oil into the oil channel (111), and the height of the oil channel (111) upside is flush with the bottom of the notch.

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