Corrosion-resistant valve body

Abstract

The utility model discloses a corrosion-resistant valve body, and relates to the technical field of ball valves. The check valve comprises a valve body, a first sealing groove, a second sealing groove, a sliding groove and a filter screen groove are formed in the valve body, a first sealing ring and a second sealing ring are arranged in the first sealing groove and the second sealing groove respectively, and the end face of the second sealing ring and the end face of the second sealing groove are fixedly connected with a plurality of sets of reset springs. According to the ball valve, the first sealing ring and the second sealing ring are arranged in the valve body, and the gap between the valve body and the ball valve body is sealed, so that media are effectively prevented from entering the gap between the valve body and the ball valve body, the corrosion risk is remarkably reduced, and particularly when the valve is closed, the pressure of the media acts on the end face of the sliding groove, and the service life of the valve is prolonged. The reset spring is stretched, the second sealing ring is tightly attached to the surface of the ball valve body, the sealing effect is further enhanced, and the reliability and corrosion resistance of the valve in the high-pressure environment are guaranteed.

Description

A corrosion-resistant valve body Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically to a corrosion-resistant valve body. Background Technology

[0002] In many industrial sectors such as chemical, petroleum, and pharmaceutical, valves play a crucial role in the production process. They frequently come into contact with various corrosive media, such as acids, alkalis, and salts. These media are often highly corrosive, posing a severe challenge to the performance and service life of valves.

[0003] Most valve bodies commonly found on the market are made of stainless steel. Although stainless steel has a certain degree of corrosion resistance, its protective performance is still significantly insufficient when facing highly corrosive environments.

[0004] Especially when the valve is closed, the gap between the valve body and the valve core becomes a key factor in accelerating corrosion. When the valve is closed, the pressure of the medium in the pipeline acts directly on the valve core. As the pressure continues to rise, the medium can easily penetrate through the tiny gap between the valve body and the valve core, thus accelerating the corrosion process of both. This corrosion phenomenon not only seriously affects the safe operation of production equipment but also significantly shortens the service life of valves, adversely impacting the company's normal production and economic benefits.

[0005] Therefore, a corrosion-resistant valve body is proposed. Summary of the Invention

[0006] The purpose of this utility model is to provide a corrosion-resistant valve body to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A corrosion-resistant valve body includes a valve body with a first sealing groove, a second sealing groove, a slide groove, and a filter screen groove respectively formed inside the valve body. A first sealing ring and a second sealing ring are respectively provided in the first sealing groove and the second sealing groove. Multiple sets of return springs are fixedly connected to the end face of the second sealing ring and the end face of the second sealing groove. A movable tube is movably inserted into the inside of the valve body and the slide groove. The movable tube and the inner wall of the second sealing ring are fixedly connected. A valve stem assembly is provided on the top of the valve body. A ball valve body is fixedly connected to the rotating part of the valve stem assembly. The first sealing ring and the second sealing ring seal the gap between the valve body and the ball valve body.

[0009] Furthermore, a filter assembly is provided in the filter groove to filter the internal medium entering the valve body.

[0010] Furthermore, the valve stem assembly includes an end cap bolted to the top of the valve body, and a stem is rotatably inserted into the inside of the end cap and the inside of the valve body. The ball valve body is fixedly installed at the bottom of the stem, and an operating handle is fixedly connected to the top of the stem.

[0011] Furthermore, the filter assembly includes a rotating shaft rotatably mounted on the end face of the filter groove, and a locking block is fixedly mounted on the end of the rotating shaft. A ring is inserted into the filter groove, a locking groove is opened on the surface of the ring, and a filter screen is fixedly mounted on the inner wall of the ring.

[0012] Furthermore, the locking block and the locking groove on the surface of the ring body have the same shape. When the ring body is installed into the filter screen groove, its locking block is inserted into the locking groove. When the ring body is fixedly installed in the filter screen groove, the locking block and the locking groove are misaligned.

[0013] Furthermore, the inner wall of the valve body and the surface of the ball valve body are coated with an anti-corrosion coating with a thickness between 0.5 and 2 mm.

[0014] The beneficial effects of this utility model are as follows:

[0015] By setting a first sealing ring and a second sealing ring inside the valve body and sealing the gap between the valve body and the ball valve body, the medium is effectively prevented from entering the gap between the valve body and the ball valve body, thereby significantly reducing the risk of corrosion. In particular, when the valve is closed, the medium pressure acts on the end face of the slide, causing the return spring to stretch, and the second sealing ring to fit tightly against the surface of the ball valve body, further enhancing the sealing effect and ensuring the reliability and corrosion resistance of the valve under high pressure.

[0016] The ring and filter screen installed in the filter screen groove can effectively filter the medium entering the valve body, preventing impurities from entering the valve body and causing blockage, ensuring the normal operation of the valve and the smooth flow of the medium. The installation and fixing of the ring and filter screen are achieved by the cooperation of the locking block and the locking groove, which is simple to operate and firmly fixed, and facilitates regular cleaning and maintenance, ensuring the long-term stability of the filtration effect. Attached Figure Description

[0017] Figure 1 is a three-dimensional structural diagram of this utility model;

[0018] Figure 2 is a side view of this utility model;

[0019] Figure 3 is an enlarged view of part A of Figure 2 of this utility model;

[0020] Figure 4 is a front sectional view of this utility model;

[0021] Figure 5 is an enlarged view of part B in Figure 4 of this utility model;

[0022] Reference numerals: 1. Valve body; 11. First sealing groove; 12. Second sealing groove; 13. Slide groove; 14. Filter screen groove; 2. First sealing ring; 3. Second sealing ring; 4. Return spring; 5. Movable tube; 6. Ball valve body; 7. Valve stem assembly; 701. End cap; 702. Stem body; 703. Operating handle; 8. Filter screen assembly; 801. Rotating shaft; 802. Locking block; 803. Ring body; 804. Locking groove; 805. Filter screen. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] As shown in Figures 1 to 5, a corrosion-resistant valve body includes a valve body 1. The valve body 1 has a first sealing groove 11, a second sealing groove 12, a slide groove 13, and a filter screen groove 14 respectively. A first sealing ring 2 and a second sealing ring 3 are respectively provided in the first sealing groove 11 and the second sealing groove 12. Multiple sets of return springs 4 are fixedly connected to the end face of the second sealing groove 12. A movable tube 5 is movably inserted into the inside of the valve body 1 and the slide groove 13. The movable tube 5 and the inner wall of the second sealing ring 3 are fixedly connected. A valve stem assembly 7 is provided on the top of the valve body 1. A ball valve body 6 is fixedly connected to the rotating part of the valve stem assembly 7. The first sealing ring 2 and the second sealing ring 3 seal the gap between the valve body 1 and the ball valve body 6. More specifically, the valve body 1 is connected to the pipeline. When the medium flows inside it, the first sealing ring 2 and the second sealing ring 3 seal the gap between the valve body 1 and the ball valve body 6, preventing the medium from entering between the valve body 1 and the ball valve body 6. When the valve stem assembly 7 controls the ball valve body 6 to close, the medium pressure in the inlet end of the valve body 1 applies pressure to the end face of the slide groove 13, causing the slide groove 13 to be subjected to axial pressure, which in turn stretches the return spring 4. This ensures that the second sealing ring 3 fits tightly against the surface of the ball valve body 6, preventing the medium pressure from being too high when it closes, which would cause the medium to enter the gap between the valve body 1 and the ball valve body 6.

[0028] A filter assembly 8 is provided inside the filter screen groove 14 to filter the internal medium entering the valve body 1. More specifically, the filter assembly 8 provided inside the filter screen groove 14 filters the internal medium entering the valve body 1, preventing impurities from entering the valve body 1 and causing blockage inside the valve body 1.

[0029] The valve stem assembly 7 includes an end cap 701 bolted to the top of the valve body 1, and a stem 702 rotatably inserted into the interior of the end cap 701 and the valve body 1. A ball valve body 6 is fixedly mounted on the bottom end of the stem 702, and an operating handle 703 is fixedly connected to the top end of the stem 702. More specifically, the operating handle 703 drives the stem 702 to rotate, thereby enabling the ball valve body 6 to rotate within the valve body 1, thus controlling the opening and closing of the valve.

[0030] The filter assembly 8 includes a rotating shaft 801 rotatably mounted on the end face of the filter groove 14, and a locking block 802 is fixedly mounted on the end of the rotating shaft 801. A ring 803 is inserted into the filter groove 14, and a locking groove 804 is formed on the surface of the ring 803. A filter screen 805 is fixedly mounted on the inner wall of the ring 803. More specifically, when installing the ring 803 and the filter screen 805, the locking groove 804 on the surface of the ring 803 corresponds to the locking block 802, allowing the ring 803 to be installed into the filter groove 14. By rotating the locking block 802, the locking block 802 and the ring 803 are misaligned, thereby achieving a fixed installation of the ring 803 and the filter screen 805.

[0031] The locking block 802 and the locking groove 804 on the surface of the ring 803 have the same shape. When the ring 803 is installed into the filter screen groove 14, its locking block 802 is inserted into the locking groove 804. When the ring 803 is fixedly installed in the filter screen groove 14, the locking block 802 and the locking groove 804 are misaligned. More specifically, by the correspondence between the locking block 802 and the locking groove 804, it is ensured that the ring 803 and the filter screen 805 can be installed into the interior of the filter screen groove 14. By the misalignment of the locking block 802 and the locking groove 804, the fixed installation of the ring 803 and the filter screen 805 in the filter screen groove 14 can be achieved.

[0032] The inner wall of the valve body 1 and the surface of the ball valve body 6 are coated with an anti-corrosion coating with a thickness between 0.5 and 2 mm. More specifically, by applying an anti-corrosion coating to the inner wall of the valve body 1 and the ball valve body 6, the corrosion resistance of the valve body 1 and the ball valve body 6 is improved, thereby extending their service life.

[0033] In summary: By connecting the valve body 1 to the pipeline, when the medium flows inside, the first sealing ring 2 and the second sealing ring 3 seal the gap between the valve body 1 and the ball valve body 6, preventing the medium from entering between the valve body 1 and the ball valve body 6. When the valve stem assembly 7 controls the ball valve body 6 to close, the medium pressure in the inlet end of the valve body 1 applies pressure to the end face of the slide groove 13, causing the slide groove 13 to be subjected to axial pressure, which in turn stretches the return spring 4, making the second sealing ring 3 tightly fit the surface of the ball valve body 6, preventing the medium pressure from being too high when it is closed, which would cause the medium to enter the gap between the valve body 1 and the ball valve body 6.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A corrosion resistant valve body for a valve, characterized by The valve body (1) includes a valve body (1), which has a first sealing groove (11), a second sealing groove (12), a slide groove (13), and a filter screen groove (14) respectively. The first sealing groove (11) and the second sealing groove (12) are respectively provided with a first sealing ring (2) and a second sealing ring (3). The end face of the second sealing ring (3) is fixedly connected to the end face of the second sealing groove (12) with multiple sets of return springs (4). The valve body (1) and the slide groove (13) are movably inserted with a movable tube (5). The movable tube (5) and the inner wall of the second sealing ring (3) are fixedly connected. The valve body (1) has a valve stem assembly (7) at the top. The rotating part of the valve stem assembly (7) is fixedly connected to a ball valve body (6). The first sealing ring (2) and the second sealing ring (3) seal the gap between the valve body (1) and the ball valve body (6).

2. A corrosion resistant valve body according to claim 1, wherein The filter screen groove (14) is provided with a filter screen assembly (8) to filter the internal medium entering the valve body (1).

3. A corrosion resistant valve body according to claim 1, wherein The valve stem assembly (7) includes an end cap (701) bolted to the top of the valve body (1), and a stem (702) is rotatably inserted into the inside of the end cap (701) and the inside of the valve body (1). The ball valve body (6) is fixedly installed at the bottom of the stem (702), and an operating handle (703) is fixedly connected to the top of the stem (702).

4. A corrosion resistant valve body according to claim 2, wherein The filter assembly (8) includes a rotating shaft (801) rotatably mounted on the end face of the filter groove (14), and a locking block (802) is fixedly mounted on the end of the rotating shaft (801). A ring (803) is inserted into the filter groove (14), and a locking groove (804) is opened on the surface of the ring (803). A filter screen (805) is fixedly mounted on the inner wall of the ring (803).

5. A corrosion resistant valve body according to claim 4, wherein The locking block (802) and the locking groove (804) on the surface of the ring body (803) have the same shape. When the ring body (803) is installed into the filter screen groove (14), its locking block (802) is inserted into the locking groove (804). When the ring body (803) is fixedly installed in the filter screen groove (14), the locking block (802) and the locking groove (804) are misaligned.

6. A corrosion resistant valve body according to claim 1 wherein, The inner wall of the valve body (1) and the surface of the ball valve body (6) are coated with an anti-corrosion coating with a thickness between 0.5 and 2 mm.

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