High-sealing anti-abrasion stop valve

Abstract

The utility model relates to the technical field of valves, in particular to a high-sealing anti-abrasion stop valve which comprises a stop valve body, a plurality of flange assemblies and a plurality of sealing assemblies, the stop valve body comprises a valve body and a valve cover, the valve cover is arranged at the top of the valve body, and a valve cavity is formed in the valve body; the flange assembly comprises first flange plates, second flange plates, a pipeline and bolts, the first flange plates are arranged on the two sides and the top connecting position of the valve body, the second flange plates are arranged on the pipeline and the valve deck, and the first flange plates and the second flange plates are fixedly connected through the bolts. The sealing assembly comprises an X-shaped sealing ring, a first supporting part and a second supporting part, the first supporting part is arranged on the first flange plate, the second supporting part is installed on the inner side of the second flange plate by forming a sealing groove, the X-shaped sealing ring is arranged in the sealing groove, and the first supporting part and the second supporting part abut against the concave positions of the two sides of the X-shaped sealing ring respectively. Through the sealing assembly, the sealing ring is difficult to deform or damage.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-sealing and abrasion-resistant stop valve. Background Art

[0002] The stop valve, also known as the intercept valve, is the most widely used valve. The reason why it is so popular is that the friction between the sealing surfaces during opening and closing is small, it is relatively durable, the opening height is not large, it is easy to manufacture and maintain, and it is suitable not only for medium and low pressures, but also for high pressures. The closing principle of the stop valve is to rely on the valve stem pressure to make the valve disc sealing surface fit closely with the valve seat sealing surface to prevent the flow of the medium.

[0003] At present, the Chinese utility model patent application with publication date of June 29, 2021 and publication number CN213575617U proposes a sealed stop valve, including a valve body, a valve disc and a valve stem, a valve cover is arranged on the valve body, a valve cavity is formed in the valve body, the valve disc is arranged in the valve cavity, the valve stem penetrates the valve cover and extends into the interior of the valve body to be connected with the valve disc, the valve disc is arranged in an arc-shaped stepped shape, a valve seat is arranged in the valve body, the valve seat is connected to the valve disc, a sealing groove is arranged on the valve seat, a sealing protrusion is formed on the valve disc, the sealing protrusion extends into the sealing groove and is connected with the sealing groove, and the plane of the valve disc is changed to an arc-shaped stepped surface, which reduces the impact of a large amount of high-speed flowing medium on the bottom surface, reduces the wear on the bottom surface of the valve disc, and improves the service life of the valve disc.

[0004] The sealing structure at the sealing point of the connecting pipe is generally provided with a sealing ring to ensure the sealing performance. However, due to the tight fit between the connecting pipes, the sealing ring is often unable to withstand excessive pressure and is distorted or even damaged, which affects the sealing performance and causes leakage of the medium. Utility Model Content

[0005] The utility model provides a high-sealing and abrasion-resistant stop valve, which can improve the technical problem in the related art that the sealing ring at the sealing part of the connecting pipe is easily distorted and deformed due to excessive pressure, or even damaged.

[0006] The embodiment of the present application provides a high-sealing and anti-abrasion stop valve, comprising:

[0007] A stop valve body, a plurality of flange components and a plurality of sealing components, wherein the stop valve body comprises a valve body and a valve cover, the valve cover is arranged on the top of the valve body, and a valve cavity is formed in the valve body;

[0008] The flange assembly includes a first flange, a second flange, a pipe and bolts, wherein the first flange is arranged at both sides of the valve body and at the top connection, and the second flange is arranged on the pipe and the valve cover, and the first flange is fixedly connected to the second flange by bolts;

[0009] The sealing assembly includes an X-shaped sealing ring, a first supporting portion and a second supporting portion. The first supporting portion is arranged on a first flange plate. The second supporting portion is installed on the inner side of the second flange plate by opening a sealing groove. The X-shaped sealing ring is arranged in the sealing groove. The first supporting portion and the second supporting portion are respectively abutted against the depressions on both sides of the X-shaped sealing ring.

[0010] The above-mentioned technical scheme in the embodiment of the present application has at least the following technical effects: when installing the stop valve, lift the valve body so that the connection points on both sides of the valve body correspond to the pipe orifices of the pipeline, and make the first flanges on both sides of the valve body correspond to the second flanges, and fix them by multiple bolts, and the first support part and the second support part respectively abut against the recesses on both sides of the X-shaped sealing ring. Therefore, the arrangement of the X-shaped sealing ring, the first support part and the second support part, the first support part and the second support part can abut and support the two ends of the X-shaped sealing ring, thereby reducing the probability of excessive distortion and deformation of the X-shaped sealing ring after being squeezed, reducing the probability of damage and other problems that will affect the sealing performance of the X-shaped sealing ring, and then reducing the probability of liquid leakage; the abutment of the first support part and the second support part on the two ends of the X-shaped sealing ring can also release the stress of the sealing ring toward the radial direction of the pipeline, thereby making the abutment of the X-shaped sealing ring with the inner wall of the sealing element and the sealing shaft tighter, further enhancing the sealing performance.

[0011] A high-sealing and anti-abrasion stop valve provided in an embodiment of the present application can reduce the probability of excessive distortion and deformation of the X-shaped sealing ring after being squeezed, reduce the probability of damage and other problems that may affect the sealing performance of the X-shaped sealing ring, and thereby reduce the probability of liquid leakage.

[0012] In some embodiments, please see Figures 3 to 5 The X-shaped sealing ring has a first groove and a second groove arranged opposite to each other, and the X-shaped sealing ring has a first state after installation. In the first state, the first supporting part and the second supporting part are respectively in contact with the bottom of the first groove and the bottom of the second groove, and the side walls of the X-shaped sealing ring are respectively in contact with the first flange and the sealing groove.

[0013] In some embodiments, the X-shaped sealing ring has a second state before installation. In the second state, the maximum groove depth of the first groove is less than the length of the first support portion, the maximum groove depth of the second groove is less than the length of the second support portion, and the groove depth of the sealing groove is greater than the thickness of the X-shaped sealing ring.

[0014] In some embodiments, both the first supporting portion and the second supporting portion are convex rib structures.

[0015] In some embodiments, the stop valve body also includes a valve flap and multiple valve seats. The valve flap and valve seats are both arranged in the valve body. The valve seats are arranged on both sides of the valve flap and cooperate with the valve flap to form a seal. The valve flap is coated with an anti-corrosion layer.

[0016] In some embodiments, a plurality of limiting rods are disposed on the first flange, and a limiting groove cooperating with the limiting rods is formed on the second flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a high-sealing and anti-abrasion stop valve provided in an embodiment of the present application;

[0019] Figure 2 For along Figure 1 The cross-sectional structure diagram along the AA line;

[0020] Figure 3 for Figure 2 Enlarged view of middle part B;

[0021] Figure 4 A cross-sectional view of an X-shaped sealing ring provided in an embodiment of the present application in a second state;

[0022] Figure 5 for Figure 4 Enlarged view of part C in the middle.

[0023] Among them, the reference numerals in the figure are:

[0024] 10. Stop valve body; 11. Valve body; 111. Valve cavity; 12. Valve disc; 13. Valve seat; 20. Flange assembly; 21. First flange plate; 22. Second flange plate; 221. Sealing groove; 222. Limiting groove; 23. Pipe; 24. Bolt; 25. Limiting rod; 30. Sealing assembly; 31. X-shaped sealing ring; 311. First groove; 312. Second groove; 32. First supporting portion; 33. Second supporting portion. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0031] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] The stop valve, also known as the intercept valve, is the most widely used valve. The reason why it is so popular is that the friction between the sealing surfaces during opening and closing is small, it is relatively durable, the opening height is not large, it is easy to manufacture and maintain, and it is suitable not only for medium and low pressures, but also for high pressures. The closing principle of the stop valve is to rely on the valve stem pressure to make the valve disc sealing surface fit closely with the valve seat sealing surface to prevent the flow of the medium.

[0033] The sealing structure at the sealing point of the connecting pipe is generally provided with a sealing ring to ensure the sealing performance. However, due to the tight fit between the connecting pipes, the sealing ring is often unable to withstand excessive pressure and is distorted or even damaged, which affects the sealing performance and causes leakage of the medium.

[0034] Based on this, the technical problem that the sealing ring at the sealing portion of the connecting pipe in the related art is easily twisted and deformed or even damaged due to excessive pressure can be improved, and the embodiments of the present application provide the following solution.

[0035] The embodiment of the present application provides a high-sealing and anti-abrasion stop valve, comprising:

[0036] The stop valve body 10 , a plurality of flange components 20 and a plurality of sealing components 30 , wherein the stop valve body 10 comprises a valve body 11 and a valve cover 14 , wherein the valve cover 14 is disposed on the top of the valve body 11 , and a valve cavity 111 is formed in the valve body 11 .

[0037] The flange assembly 20 includes a first flange 21, a second flange 22, a pipe 23 and bolts 24. The first flange 21 is arranged on both sides of the valve body 11 and at the top connection. The second flange 22 is arranged on the pipe 23 and the valve cover 14. The first flange 21 and the second flange 22 are fixedly connected by bolts 24.

[0038] The sealing assembly 30 includes an X-shaped sealing ring 31, a first supporting portion 32 and a second supporting portion 33. The first supporting portion 32 is arranged on the first flange 21. The second supporting portion 33 is installed by opening a sealing groove 221 on the inner side of the second flange 22. The X-shaped sealing ring 31 is arranged in the sealing groove 221. The first supporting portion 32 and the second supporting portion 33 are respectively abutted against the recesses on both sides of the X-shaped sealing ring 31.

[0039] As can be seen from the above, the embodiment of the present application provides a high-sealing and anti-abrasion stop valve. When installing the stop valve, lift the valve body 11 so that the connection points on both sides of the valve body 11 correspond to the pipe openings of the pipeline 23, and make the first flange 21 on both sides of the valve body 11 correspond to the second flange 22, and fix them by multiple bolts 24. The first support part 32 and the second support part 33 are respectively abutted against the depressions on both sides of the X-shaped sealing ring 31. Therefore, the arrangement of the X-shaped sealing ring 31, the first support part 32 and the second support part 33, the first support part 32 and the second support part 33, The portion 33 can abut against and support the two ends of the X-shaped sealing ring 31, thereby reducing the probability of excessive distortion and deformation of the X-shaped sealing ring 31 after being squeezed, reducing the probability of damage and other problems that may affect the sealing performance of the X-shaped sealing ring 31, and further reducing the probability of liquid leakage; the abutment of the first supporting portion 32 and the second supporting portion 33 on the two ends of the X-shaped sealing ring 31 can also release the stress of the sealing ring toward the radial direction of the pipe 23, thereby making the abutment of the X-shaped sealing ring 31 with the inner wall of the sealing element and the sealing shaft tighter, further enhancing the sealing performance.

[0040] Optionally, in some embodiments, please read Figures 3 to 5 The X-shaped sealing ring 31 has a first groove 311 and a second groove 312 that are arranged opposite to each other. The X-shaped sealing ring 31 has a first state after installation. In the first state, the first supporting portion 32 and the second supporting portion 33 are respectively in contact with the bottom of the first groove 311 and the bottom of the second groove 312, and the side walls of the X-shaped sealing ring 31 are respectively in contact with the first flange 21 and the sealing groove 221.

[0041] With such arrangement, after the valve body 11 is connected to the pipeline 23 through the flange assembly 20, the first support portion 32 abuts against the bottom of the first groove 311, and the second support portion 33 abuts against the bottom of the second groove 312, and the stress of the X-shaped sealing ring 31 is released radially toward the pipeline 23. The two sides of the X-shaped sealing ring 31 clamp and seal the first support portion 32 and the second support portion 33 under the elastic action, and contact the first flange 21 and the sealing groove 221 respectively, so that the effective contact area between the first support portion 32 and the second support portion 33 and the X-shaped sealing ring 31 can be large enough, thereby ensuring the supporting effect of the first support portion 32 and the second support portion 33 and the X-shaped sealing ring 31, and enabling the X-shaped sealing ring 31 to contact the first flange 21 and the second flange 22 respectively under a relatively small deformation to form a seal, thereby further improving the sealing performance.

[0042] Optionally, in some embodiments, please read Figures 3 to 5 The X-shaped sealing ring 31 has a second state before installation. In the second state, the maximum groove depth of the first groove 311 is less than the length of the first support portion 32, the maximum groove depth of the second groove 312 is less than the length of the second support portion 33, and the groove depth of the sealing groove 221 is greater than the thickness of the X-shaped sealing ring 31.

[0043] In this way, when the second flange 22 is connected to the first flange 21, the two sides of the X-shaped sealing ring 31 first contact the first supporting portion 32 and the second supporting portion 33. At this time, there is a gap between one side of the X-shaped sealing ring 31 and the first flange 21, and there is a gap between the other side and the bottom of the sealing groove 221; the first supporting portion 32 abuts against the bottom of the first groove 311, and the second supporting portion 33 abuts against the bottom of the second groove 312 to form a seal. The two sides of the X-shaped sealing ring 31 are elastically pressed against the first supporting portion 32 and the second supporting portion 33 respectively. The support portion 32 and the second support portion 33 are clamped and sealed. During the clamping and sealing process of the X-shaped sealing ring 31, the side walls of the X-shaped sealing ring 31 are respectively in contact with the first flange 21 and the sealing groove 221, thereby further enhancing the sealing performance. Therefore, the groove depth of the sealing groove 221 is greater than the thickness of the X-shaped sealing ring 31, thereby facilitating the two sides of the X-shaped sealing ring 31 to clamp and seal the first support portion 32 and the second support portion 33 respectively under the action of elasticity, thereby enhancing the sealing and supporting effects of the sealing assembly 30.

[0044] Optionally, in some embodiments, see Figure 3 The first supporting portion 32 and the second supporting portion 33 are both convex rib structures.

[0045] With such a configuration, the convex rib structure directly abuts against the bottom of the first groove 311 and the second groove 312, thereby enhancing the supporting effect of the X-shaped sealing ring 31. At the same time, the convex rib structure can also support the X-shaped sealing ring 31 along the radial direction of the sealing axis, thereby further ensuring the structural stability of the X-shaped sealing ring 31.

[0046] Optionally, in some embodiments, see Figure 1 to Figure 2 The stop valve body 10 also includes a valve disc 12 and a plurality of valve seats 13. The valve disc 12 and the valve seats 13 are both arranged in the valve body 11. The valve seats 13 are arranged on both sides of the valve disc 12 and cooperate with the valve disc 12 to form a seal. The valve disc 12 is coated with an anti-corrosion layer.

[0047] With such arrangement, when it is necessary to control the opening or closing of the valve body 11, the valve flap 12 is moved so that the valve plate 12 moves into the valve body 11 and cooperates with the valve flap 12 to form a seal, and the valve body 11 is in a closed state; the valve flap 12 is moved in the opposite direction so that the valve flap 12 moves away from the valve seat 13, and the valve body 11 is in an open state. Therefore, the staff can control the opening or closing of the valve body 11 by moving the valve flap 12, and the anti-corrosion layer is used for anti-corrosion.

[0048] Optionally, in some embodiments, see Figures 2 to 3 The first flange 21 is provided with a plurality of limiting rods 25 , and the second flange 22 is provided with limiting grooves 222 matching the limiting rods 25 .

[0049] With such an arrangement, when installing the valve body 11, the limit groove 222 is aligned with the limit rod 25, the first flange 21 and the second flange 22 are matched and installed, and then fixed by the bolt 24. Therefore, the limit rod 25 and the limit groove 222 can guide the installation of the valve body 11, making it convenient for the staff to match and install the first flange 21 and the second flange 22, thereby reducing the probability of interference between the structures.

[0050] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A high sealing and anti-abrasion stop valve, characterized in that: It comprises a stop valve body (10), a plurality of flange assemblies (20) and a plurality of sealing assemblies (30); The stop valve body (10) comprises a valve body (11) and a valve cover (14), wherein the valve cover (14) is arranged on the top of the valve body (11), and a valve cavity (111) is formed in the valve body (11); The flange assembly (20) comprises a first flange (21), a second flange (22), a pipe (23) and bolts (24); the first flange (21) is arranged on both sides of the valve body (11) and at a top connection; the second flange (22) is arranged on the pipe (23) and the valve cover (14); the first flange (21) and the second flange (22) are fixedly connected by bolts (24); The sealing assembly (30) comprises an X-shaped sealing ring (31), a first supporting portion (32) and a second supporting portion (33); the first supporting portion (32) is arranged on the first flange (21); a sealing groove (221) is provided on the inner side of the second flange (22) to install the second supporting portion (33); the X-shaped sealing ring (31) is arranged in the sealing groove (221); the first supporting portion (32) and the second supporting portion (33) are respectively in contact with depressions on both sides of the X-shaped sealing ring (31).

2. A high sealing and anti-abrasion stop valve according to claim 1, characterized in that: The X-shaped sealing ring (31) has a first groove (311) and a second groove (312) arranged opposite to each other. The X-shaped sealing ring (31) has a first state after installation. In the first state, the first supporting portion (32) and the second supporting portion (33) respectively abut against the bottom of the first groove (311) and the bottom of the second groove (312), and the side walls of the X-shaped sealing ring (31) respectively contact the first flange (21) and the sealing groove (221).

3. A high sealing and anti-abrasion stop valve according to claim 2, characterized in that: The X-shaped sealing ring (31) has a second state before being installed, in which the maximum groove depth of the first groove (311) is less than the length of the first support portion (32), the maximum groove depth of the second groove (312) is less than the length of the second support portion (33), and the groove depth of the sealing groove (221) is greater than the thickness of the X-shaped sealing ring (31).

4. A high sealing and anti-abrasion stop valve according to any one of claims 1 to 3, characterized in that: The first supporting portion (32) and the second supporting portion (33) are both convex rib structures.

5. A high sealing and anti-abrasion stop valve according to claim 4, characterized in that: The stop valve body (10) further comprises a valve flap (12) and a plurality of valve seats (13); the valve flap (12) and the valve seats (13) are both arranged in the valve body (11); the valve seats (13) are arranged on both sides of the valve flap (12) and cooperate with the valve flap (12) to form a seal; and the valve flap (12) is coated with an anti-corrosion layer.

6. The high sealing and anti-abrasion stop valve according to claim 1, characterized in that: A plurality of limiting rods (25) are arranged on the first flange (21), and limiting grooves (222) matching the limiting rods (25) are provided on the second flange (22).

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