An eccentric valve sealing device

Abstract

The utility model discloses a kind of eccentric valve sealing devices, belong to eccentric valve technical field, its technical scheme main points include eccentric valve body and two pipeline bodies, rubber sealing pad is arranged between the side opposite of eccentric valve body and pipeline body, the inside of rubber sealing pad is provided with reinforcing mechanism, the both sides of pipeline body top and bottom are provided with sealing mechanism;The sealing mechanism includes arc card, two sealing strips and test paper, the inner wall of arc card is pasted in test paper, the inner wall of arc card is fixedly connected in sealing strip, two sealing strips are respectively with the surface of pipeline body and eccentric valve body close contact, solve the sealing structure of the single of part eccentric valve in existing, after being connected with pipeline, sealing pad side surface exposes, it is not convenient to obtain protection, sealing pad is easily gradually internal aging from side, affect sealing shelf life, and it is not convenient to judge whether leakage exists in its and pipeline connection place.

Description

Technical Field

[0001] This utility model relates to the field of eccentric valve technology, and in particular to an eccentric valve sealing device. Background Technology

[0002] An eccentric valve is a special type of valve that opens, closes, and regulates the flow of media by offsetting the valve plate from the center of the valve seat and the axis of the valve stem. Its core advantage is that it solves the problems of easy wear of the sealing surface and difficulty in controlling leakage in traditional valves. It is widely used in industrial pipeline systems.

[0003] The sealing structure of some existing eccentric valves is relatively simple. After being connected to the pipeline, the side of the sealing gasket is exposed and not easy to protect. The sealing gasket is prone to aging from the side to the inside, affecting the sealing time and making it difficult to determine whether there is a leak at the connection with the pipeline.

[0004] Therefore, an eccentric valve sealing device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide an eccentric valve sealing device, which can solve the problem that the sealing structure of some existing eccentric valves is relatively simple. After being connected to the pipeline, the side of the sealing gasket is exposed and it is not convenient to protect it. The sealing gasket is prone to aging from the side to the inside, affecting the sealing time, and it is also inconvenient to determine whether there is leakage at the connection with the pipeline.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an eccentric valve sealing device, comprising an eccentric valve body and two pipe bodies, wherein a rubber sealing gasket is provided between the eccentric valve body and the pipe bodies on opposite sides, and a reinforcing mechanism is provided inside the rubber sealing gasket, and sealing mechanisms are provided on both sides of the top and bottom of the pipe bodies. The sealing mechanism includes an arc-shaped clip, two sealing strips, and a test strip. The test strip is pasted on the inner wall of the arc-shaped clip, and the sealing strips are fixedly connected to the inner wall of the arc-shaped clip. The two sealing strips are in close contact with the surfaces of the pipe body and the eccentric valve body, respectively.

[0007] Preferably, the reinforcing mechanism includes a corrosion-resistant layer, an anti-compression layer, and an elastic steel ring, with the rubber sealing gasket covering the surface of the elastic steel ring, the anti-compression layer disposed on the surface of the rubber sealing gasket, and the corrosion-resistant layer disposed on the surface of the anti-compression layer.

[0008] Preferably, the anti-compression layer is uniformly coated on the surface of the rubber gasket, and the material of the anti-compression layer is an elastic resin short fiber composite coating.

[0009] Preferably, the corrosion-resistant layer is uniformly coated on the surface of the compression-resistant layer, and the material of the corrosion-resistant layer is a fluorocarbon elastic coating.

[0010] Preferably, the interior of the arc-shaped card is inlaid with a viewing window, and the number of viewing windows is several and evenly distributed inside the arc-shaped card.

[0011] Preferably, both sides of the arc-shaped card are fixedly connected to connecting blocks, and a connecting button is provided on the top of the top connecting block. The bottom of the connecting button passes through the top connecting block and is connected to the internal thread of the bottom connecting block. The surface of the connecting button is in active contact with the interior of the top connecting block.

[0012] Preferably, limit blocks are fixedly connected to both sides of the arc-shaped card. The number of limit blocks is several and they are evenly distributed on both sides of the arc-shaped card. The surface of the limit blocks is in contact with the surface of the pipe body and the eccentric valve body, respectively.

[0013] Preferably, the surface of the limiting block is chamfered.

[0014] Preferably, the pipe body is internally fitted with screws, and the eccentric valve body is surface-mounted with nuts. The number of screws and nuts is several, and the eccentric valve body and the pipe body are bolted together by screws and nuts.

[0015] Preferably, a pull ring is fixedly connected to the surface of the arc-shaped card.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This application establishes a sealing mechanism with a rubber gasket as the basic carrier. An elastic steel ring is wrapped around the rubber gasket inside. The elastic steel ring provides structural support to maintain the shape stability of the rubber gasket and prevent it from deforming due to external forces during installation or use. The surface of the rubber gasket is uniformly coated with an anti-compression layer made of elastic resin short fiber composite coating. This coating can significantly improve the anti-compression performance of the rubber gasket and effectively prevent the rubber gasket from deforming in the compression environment after the eccentric valve body and the pipeline body are bolted together, thereby avoiding sealing failure caused by compression deformation. The surface of the anti-compression layer is also uniformly coated with a corrosion-resistant layer made of fluorocarbon elastic coating, which can resist the corrosion and erosion of the rubber gasket by the medium transported in the pipeline and reduce the damage of the medium to the rubber gasket. The three-layer structure works together to enhance the performance of the rubber gasket from three aspects: structural support, anti-compression, and corrosion resistance, extend its service life, and provide a reliable guarantee for the basic seal between the eccentric valve body and the pipeline body. 2. This application employs a reinforced mechanism, using an arc-shaped clip as the core frame, combined with a sealing strip, test paper, viewing window, connecting block, connecting button, limiting block, and pull ring. During installation, the pull ring on the surface of the arc-shaped clip allows for easy engagement with the pipe body and the eccentric valve body. Several evenly distributed limiting blocks on both sides of the arc-shaped clip contact the surfaces of the pipe body and the eccentric valve body for precise positioning, facilitating smooth installation of the arc-shaped clip while reducing scratches on component surfaces. The threaded connection between the bottom connecting block and the connecting button allows for the connection of the top and bottom arc-shaped clips. Securely fixed, the sealing strip on the inner wall of the arc-shaped card tightly adheres to the pipe body and the eccentric valve body, protecting the side of the rubber sealing gasket and preventing external environmental factors from causing the gasket to age from the side inwards, thus preventing a decline in sealing performance and extending the sealing time. At the same time, the test paper pasted on the inner wall of the arc-shaped card, together with several evenly distributed viewing windows inside, allows for the replacement of appropriate test paper according to the transported medium. Workers can observe the color change of the test paper through the viewing windows, enabling them to promptly determine sealing failure. This solves the problem of easy aging and difficulty in detecting leaks caused by the exposed side of the eccentric valve sealing gasket, ensuring the effectiveness of the seal. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the eccentric valve sealing device of this utility model; Figure 2 This is a three-dimensional exploded view of the pipe body and the eccentric valve body in this utility model; Figure 3 This is a three-dimensional exploded view of the arc-shaped card and the test paper in this utility model; Figure 4 This utility model Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a three-dimensional connection diagram of the arc-shaped card and the limiting block in this utility model; Figure 6 This is a cross-sectional view of the rubber sealing gasket in this utility model.

[0018] In the diagram, 1. Eccentric valve body; 2. Pipeline body; 3. Sealing mechanism; 301. Arc-shaped clip; 302. Sealing strip; 303. Test paper; 4. Screw; 5. Nut; 6. Rubber sealing gasket; 7. Pull ring; 8. Limiting block; 9. Reinforcing mechanism; 901. Corrosion-resistant layer; 902. Compression-resistant layer; 903. Elastic steel ring; 10. Viewing window; 11. Connecting button; 12. Connecting block. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-6 The present invention provides the following technical solution: An eccentric valve sealing device includes an eccentric valve body 1 and two pipe bodies 2. A rubber sealing gasket 6 is provided between the eccentric valve body 1 and the opposite side of the pipe body 2. A reinforcing mechanism 9 is provided inside the rubber sealing gasket 6. Sealing mechanisms 3 are provided on both sides of the top and bottom of the pipe body 2. The sealing mechanism 3 includes an arc-shaped card 301, two sealing strips 302 and a test paper 303. The test paper 303 is pasted on the inner wall of the arc-shaped card 301, and the sealing strips 302 are fixedly connected to the inner wall of the arc-shaped card 301. The two sealing strips 302 are in close contact with the surfaces of the pipe body 2 and the eccentric valve body 1, respectively.

[0021] In this embodiment: the eccentric valve body 1 is fixed to the two pipe bodies 2 by screws 4 and nuts 5. A rubber sealing gasket 6 is set between them. The sealing gasket is supported by an elastic steel ring 903 to maintain its shape stability. The surface is coated with an anti-compression layer 902 of elastic resin short fiber composite coating to prevent compression deformation and sealing failure. The outer layer is coated with a corrosion-resistant layer 901 of fluorocarbon elastic coating to prevent the transported medium from corroding it. The arc-shaped clip 301 is installed on the top and bottom of the pipe body 2 by pull ring 7. The limiting block 8 positions the arc-shaped clip 301. Then, the connecting button 11 is tightened to connect the top and bottom arc-shaped clips 301. The sealing strip 302 on the inner wall of the arc-shaped clip 301 is tightly attached to the pipe. The main body 2 and the eccentric valve body 1 seal the side of the rubber sealing gasket 6 to prevent the side of the rubber sealing gasket 6 from being in long-term contact with air and aging from the side inward. The inner wall of the arc-shaped card 301 is covered with test paper 303 and has a viewing window 10 embedded inside. When the medium leaks, the test paper 303 will change color, which makes it easy to judge the sealing failure of the rubber sealing gasket 6 and facilitates timely replacement of the rubber sealing gasket 6. This solves the problem that the sealing structure of some existing eccentric valves is relatively simple. After being connected to the pipeline, the side of the sealing gasket is exposed and not easy to be protected. The sealing gasket is prone to aging from the side inward, affecting the sealing time and making it difficult to judge whether there is a leak at the connection with the pipeline.

[0022] Specifically, such as Figure 6As shown, the reinforcing mechanism 9 includes a corrosion-resistant layer 901, an anti-compression layer 902, and an elastic steel ring 903. A rubber sealing gasket 6 covers the surface of the elastic steel ring 903, the anti-compression layer 902 is disposed on the surface of the rubber sealing gasket 6, and the corrosion-resistant layer 901 is disposed on the surface of the anti-compression layer 902.

[0023] Specifically, such as Figure 6 As shown, the anti-compression layer 902 is uniformly coated on the surface of the rubber sealing gasket 6, and the material of the anti-compression layer 902 is an elastic resin short fiber composite coating.

[0024] Specifically, such as Figure 6 As shown, the corrosion-resistant layer 901 is uniformly coated on the surface of the compression-resistant layer 902, and the material of the corrosion-resistant layer 901 is fluorocarbon elastic coating.

[0025] In this embodiment: In the reinforcing mechanism 9, the elastic steel ring 903 provides structural support for the rubber sealing gasket 6, maintaining its shape stability. The anti-compression layer 902 is coated with elastic resin short fiber composite coating, which can effectively improve the anti-compression performance of the rubber sealing gasket 6 and prevent it from failing due to compression deformation. The corrosion-resistant layer 901 is coated with fluorocarbon elastic coating evenly on the surface of the anti-compression layer 902, which can resist the corrosion of the medium inside the pipeline body 2. The three-layer structure works together to extend the service life of the rubber sealing gasket 6 and ensure the reliability of the seal.

[0026] Specifically, such as Figure 3 As shown, the interior of the arc-shaped card 301 is inlaid with a viewing window 10, and the number of viewing windows 10 is several and they are evenly distributed inside the arc-shaped card 301.

[0027] Specifically, such as Figure 1 and Figure 3 As shown, both sides of the arc-shaped card 301 are fixedly connected to connecting blocks 12. A connecting button 11 is provided on the top of the top connecting block 12. The bottom of the connecting button 11 passes through the top connecting block 12 and is connected to the internal thread of the bottom connecting block 12. The surface of the connecting button 11 is in active contact with the inside of the top connecting block 12.

[0028] In this embodiment: the several evenly distributed viewing windows 10 of the arc-shaped card 301 facilitate observation of the internal test paper 303 status and timely detection of sealing problems. The connecting blocks 12 on both sides, together with the connecting buttons 11, can securely connect the top and bottom arc-shaped cards 301, ensuring that they fit with the pipe body 2 and the eccentric valve body 1, which not only ensures the reliability of the sealing mechanism 3 installation, but also provides convenience for sealing monitoring.

[0029] Specifically, such as Figure 3 As shown, limit blocks 8 are fixedly connected to both sides of the arc-shaped card 301. There are several limit blocks 8, which are evenly distributed on both sides of the arc-shaped card 301. The surface of the limit blocks 8 is in contact with the surface of the pipe body 2 and the eccentric valve body 1, respectively.

[0030] Specifically, such as Figure 5 As shown, the surface of the limiting block 8 is chamfered.

[0031] In this embodiment, several evenly distributed limiting blocks 8 on both sides of the arc-shaped clip 301 can contact the surfaces of the pipe body 2 and the eccentric valve body 1 to achieve positioning, ensuring accurate installation of the arc-shaped clip 301. The chamfered design of the surface of the limiting block 8 can facilitate the smooth installation of the arc-shaped clip 301 and reduce scratch damage to the surfaces of the pipe body 2 and the eccentric valve body 1, thereby improving installation convenience and component protection.

[0032] Specifically, such as Figure 2 As shown, a screw 4 is installed inside the pipe body 2, and a nut 5 is installed on the surface of the eccentric valve body 1. There are several screws 4 and nuts 5. The eccentric valve body 1 and the pipe body 2 are connected by screws 4 and nuts 5.

[0033] Specifically, such as Figure 3 As shown, a pull ring 7 is fixedly connected to the surface of the arc-shaped card 301.

[0034] In this embodiment: the screw 4 and nut 5 work together to achieve a stable connection between the eccentric valve body 1 and the pipeline body 2, providing a basic connection guarantee for the overall sealing device. The pull ring 7 on the surface of the arc-shaped clip 301 makes it easy for operators to disassemble and install the arc-shaped clip 301, improving the ease of operation of the sealing mechanism 3 and facilitating later maintenance and replacement.

[0035] Working principle: First, the eccentric valve body 1 is bolted to the two pipe bodies 2 using screws 4 and nuts 5, achieving a basic fixed connection between the eccentric valve body 1 and the pipe bodies 2. A rubber sealing gasket 6 is placed between the opposite sides of the eccentric valve body 1 and the pipe bodies 2. The rubber sealing gasket 6 is covered with an elastic steel ring 903, which provides structural support for the rubber sealing gasket 6 to maintain its shape stability. At the same time, the surface of the rubber sealing gasket 6 is uniformly coated with an anti-compression layer 902. The anti-compression layer 902 is made of elastic resin short fiber composite coating, which can effectively improve the anti-compression performance of the rubber sealing gasket 6 and prevent it from failing to seal due to compression deformation during use. Furthermore, a corrosion-resistant layer 90 is uniformly coated on the surface of the anti-compression layer 902. 1. The corrosion-resistant layer 901 is made of fluorocarbon elastic coating, which can resist the corrosion of the rubber sealing gasket 6 by the medium transported in the pipeline, further extending the service life of the rubber sealing gasket 6. After the basic connection between the eccentric valve body 1 and the pipeline body 2 is completed and the rubber sealing gasket 6 is initially sealed, the arc-shaped clips 301 on the top and bottom sides of the pipeline body 2 are respectively engaged with the surfaces of the pipeline body 2 and the eccentric valve body 1 by means of the pull ring 7 fixedly connected to the surface of the arc-shaped clip 301. Several evenly distributed limiting blocks 8 fixedly connected to both sides of the arc-shaped clip 301 are in close contact with the surfaces of the pipeline body 2 and the eccentric valve body 1 to achieve the positioning of the arc-shaped clip 301. The surface of the limiting block 8 is chamfered to facilitate the smooth engagement of the arc-shaped clip 301 and reduce the impact on the pipeline body 2 and the eccentric valve body. 1. Scratching the surface, then inserting the connecting button 11 through the top of the top connecting block 12, making its bottom threadedly connected to the inside of the bottom connecting block 12. By tightening the connecting button 11, the arc-shaped clip 301 is firmly fixed to the pipe body 2 and the eccentric valve body 1. The two sealing strips 302 fixedly connected to the inner wall of the arc-shaped clip 301 will fit tightly against the surfaces of the pipe body 2 and the eccentric valve body 1 respectively, thereby forming a sealing protection for the side of the rubber sealing gasket 6, preventing the rubber sealing gasket 6 from aging from the side inward due to external environmental factors, and thus preventing the sealing performance from deteriorating. At the same time, the inner wall of the arc-shaped clip 301 is pasted with test paper 303, and the arc-shaped clip 301 has several evenly distributed viewing windows 10. If the rubber sealing gasket 6 fails to seal, The medium transported inside the pipeline body 2 will penetrate to the inner wall of the arc-shaped card 301 and come into contact with the test paper 303. The appropriate test paper 303 can be replaced depending on the transported medium. For example, when the transported medium is acidic, a wide-range pH test paper 303 can be used; the test paper 303 will gradually change from yellow to red after contact with the acidic medium. When the transported medium is sulfur-containing, lead acetate test paper 303 can be used; the test paper 303 will change from white to black after contact with the sulfur-containing medium. Operators can observe the corresponding color change of the test paper 303 through the viewing window 10, which allows them to promptly determine if the rubber sealing gasket 6 has failed, facilitating timely replacement of the rubber sealing gasket 6. This ensures a continuous and stable sealing effect for the entire eccentric valve body 1, solving the problem of the relatively simple sealing structure of some existing eccentric valves.After connection to the pipeline, the side of the sealing gasket is exposed, making it difficult to protect. The gasket is prone to aging gradually from the side inwards, affecting sealing performance and making it difficult to determine if there is a leak at the connection point with the pipeline. It should be noted that the eccentric valve body 1 is a well-established and publicly available technology, and any content not described in detail in this specification is prior art known to those skilled in the art; its basic mechanisms will not be elaborated here.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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. An eccentric valve sealing device, comprising an eccentric valve body (1) and two pipe bodies (2), characterized in that: A rubber sealing gasket (6) is provided between the eccentric valve body (1) and the pipe body (2) on opposite sides. A reinforcing mechanism (9) is provided inside the rubber sealing gasket (6). Sealing mechanisms (3) are provided on both sides of the top and bottom of the pipe body (2). The sealing mechanism (3) includes an arc-shaped card (301), two sealing strips (302) and a test paper (303). The test paper (303) is pasted on the inner wall of the arc-shaped card (301), and the sealing strips (302) are fixedly connected to the inner wall of the arc-shaped card (301). The two sealing strips (302) are in close contact with the surfaces of the pipe body (2) and the eccentric valve body (1), respectively.

2. The eccentric valve sealing device according to claim 1, characterized in that: The reinforcing mechanism (9) includes a corrosion-resistant layer (901), an anti-compression layer (902), and an elastic steel ring (903). The rubber sealing gasket (6) covers the surface of the elastic steel ring (903), the anti-compression layer (902) is disposed on the surface of the rubber sealing gasket (6), and the corrosion-resistant layer (901) is disposed on the surface of the anti-compression layer (902).

3. The eccentric valve sealing device according to claim 2, characterized in that: The anti-compression layer (902) is uniformly coated on the surface of the rubber sealing gasket (6), and the material of the anti-compression layer (902) is an elastic resin short fiber composite coating.

4. The eccentric valve sealing device according to claim 2, characterized in that: The corrosion-resistant layer (901) is uniformly coated on the surface of the compression-resistant layer (902), and the material of the corrosion-resistant layer (901) is fluorocarbon elastic coating.

5. The eccentric valve sealing device according to claim 1, characterized in that: The arc-shaped card (301) has a viewing window (10) embedded inside, and the number of viewing windows (10) is several and they are evenly distributed inside the arc-shaped card (301).

6. The eccentric valve sealing device according to claim 1, characterized in that: Both sides of the arc-shaped card (301) are fixedly connected to connecting blocks (12). A connecting button (11) is provided on the top of the top connecting block (12). The bottom of the connecting button (11) passes through the top connecting block (12) and is threadedly connected to the inside of the bottom connecting block (12). The surface of the connecting button (11) is in active contact with the inside of the top connecting block (12).

7. The eccentric valve sealing device according to claim 1, characterized in that: Both sides of the arc-shaped card (301) are fixedly connected to limit blocks (8). There are several limit blocks (8) and they are evenly distributed on both sides of the arc-shaped card (301). The surface of the limit block (8) is in contact with the surface of the pipe body (2) and the eccentric valve body (1), respectively.

8. The eccentric valve sealing device according to claim 7, characterized in that: The surface of the limiting block (8) is chamfered.

9. The eccentric valve sealing device according to claim 1, characterized in that: The pipe body (2) is equipped with screws (4) inside, and the eccentric valve body (1) is equipped with nuts (5) on its surface. There are several screws (4) and nuts (5). The eccentric valve body (1) and the pipe body (2) are connected by screws (4) and nuts (5).

10. The eccentric valve sealing device according to claim 1, characterized in that: A pull ring (7) is fixedly connected to the surface of the arc-shaped card (301).

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