A low-leak high-seal valve assembly

Abstract

The application discloses a low-leakage high-sealing valve assembly, which comprises a valve body fixed at an opening of a medium channel through a mounting seat; the valve body comprises an inlet and an outlet communicated with a containing cavity, and a sealing assembly arranged in the containing cavity and used for opening or closing the outlet; and a filter is arranged at the inlet of the containing cavity and used for filtering impurities in the medium entering the containing cavity. Through the low-leakage high-sealing valve assembly, impurities in the medium entering the containing cavity of the valve body can be effectively filtered, the impurities are prevented from entering the valve body, the valve body is prevented from being blocked, and the normal function is affected.

Description

Technical Field

[0001] This application relates to the field of valve technology. More specifically, this application relates to a low-leakage, high-sealing valve assembly. Background Technology

[0002] Low-leakage, high-sealing valves are critical safety devices in industrial pipeline systems, with their core functions including low leakage and high sealing. The low-leakage function prevents the accumulation of minute leaks in the pipeline, thus avoiding accidental triggering or safety hazards; while the high-sealing function rapidly releases pressure when the system is overpressured, maintaining system pressure stability. However, traditional low-leakage, high-sealing valves have significant drawbacks in application. Impurities in the medium, such as particulate matter and crystals, easily accumulate in the valve cavity or sealing surface, leading to valve jamming and failure. Especially in extremely cold environments such as winter pipelines and underground fire hydrants, the freezing heave of residual media can exacerbate blockages, causing frequent freezing and cracking damage to equipment.

[0003] Therefore, there is an urgent need to provide a low-leakage, high-sealing valve to reduce the accumulation of impurities in the medium and ensure smooth valve operation. Utility Model Content

[0004] In order to at least solve one or more of the technical problems mentioned above, this application proposes a low-leakage, high-sealing valve capable of preventing blockage in several aspects.

[0005] In a first aspect, this application provides a low-leakage, high-sealing valve assembly, comprising: a valve body fixed to an opening of a medium channel by a mounting base; the valve body including an inlet and an outlet communicating with a receiving cavity, and a sealing assembly disposed within the receiving cavity, the sealing assembly being used to open or close the outlet; and a filter installed at the inlet of the receiving cavity and used to filter impurities in the medium entering the receiving cavity.

[0006] In some embodiments, the filter has a conical structure and its surface has a plurality of spaced-apart filter holes.

[0007] In some embodiments, the filter is installed within a media channel, and its axis coincides with the axis of the inlet in the receiving cavity.

[0008] In some embodiments, the height of the filter does not exceed the radius of the cross-section of the media channel.

[0009] In some embodiments, the filter is detachably disposed within the receiving cavity of the valve body.

[0010] In some embodiments, the sealing assembly includes a sealing ball and an elastic element, one end of which is connected to the sidewall at the outlet and the other end of which is connected to the sealing ball; when the pressure in the medium channel increases, the sealing ball compresses the spring to close the outlet; when the pressure in the medium channel decreases, the sealing ball compresses the spring to open the outlet.

[0011] In some embodiments, the receiving cavity includes a first receiving cavity and a second receiving cavity, and the cross-sectional area of ​​the first receiving cavity is larger than the cross-sectional area of ​​the second receiving cavity; the second receiving cavity is provided with an annular sealing surface near the side wall of the first receiving cavity, and the sealing surface cooperates with the sealing ball to close the outlet.

[0012] The low-leakage, high-sealing valve assembly described above effectively filters out impurities contained in the medium entering the valve body cavity, preventing impurities from entering the valve interior. Furthermore, in some embodiments, the filter employs a conical filter screen design, increasing the filtration area and improving filtration efficiency. Attached Figure Description

[0013] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, and the same or corresponding reference numerals denote the same or corresponding parts, wherein: Figure 1 This illustration shows a schematic diagram of the structure of the low-leakage high-sealing valve assembly in an embodiment of this application when the outlet is in the open state; Figure 2 A schematic diagram of the structure of the low-leakage high-sealing valve assembly according to an embodiment of this application is shown when the outlet is in the closed state.

[0014] In the diagram: 100, low-leakage high-sealing valve assembly; 200, medium passage; 101. Valve body; 102. First receiving cavity; 103. Second receiving cavity; 104. Inlet; 105. Outlet; 106. Filter; 107. Filter hole; 108. Mounting base; 109. Elastic element; 110. Sealing ball; 111. Sealing surface. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] It should be understood that the terms "comprising" and "including" as used in the specification and claims of this application indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0017] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0018] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0019] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0020] like Figure 1 and Figure 2 In some embodiments, this application provides a low-leakage, high-sealing valve assembly 100, comprising: a valve body 101, which is fixed to the opening of a medium channel 200 by a mounting base 108; the valve body 101 includes an inlet 104 and an outlet 105 communicating with a receiving cavity, and a sealing assembly disposed within the receiving cavity, the sealing assembly being used to open or close the outlet 105; and a filter 106, which is installed at the inlet 104 of the receiving cavity and is used to filter impurities in the medium entering the receiving cavity.

[0021] The low-leakage, high-sealing valve assembly 100 provided in this application mainly consists of a valve body 101 and a filter 106. The valve body 101 is fixed to the opening of the medium channel 200 via a mounting base 108. The valve body 101 has an internal receiving cavity with an inlet 104 and an outlet 105 arranged opposite to each other. A sealing assembly is also installed inside the cavity to control the opening and closing of the outlet 105. Specifically, the working state of the sealing assembly depends on the medium pressure in the medium channel 200. When the system is operating normally, the medium pressure pushes the sealing assembly to close the outlet 105. When the system pressure drops to a specific value, the sealing assembly opens under the action of a spring to release pressure. Additionally, the filter 106 in this solution is installed at the inlet 104 of the receiving cavity to filter impurities in the medium entering the receiving cavity, preventing impurity accumulation and reducing the risk of blockage.

[0022] It is worth noting that the medium channel 200 mentioned in this application refers to a connecting pipe. The medium in the connecting pipe can be either gas or liquid, mainly determined according to the actual industrial application scenario and requirements. In different pipeline systems, the connecting pipe is responsible for transporting the medium from one part to another, while the low-leakage high-sealing valve is installed at the opening of the connecting pipe. Through its internal valve body 101, sealing assembly, and filter 106, it achieves control and filtration of the medium. When the medium flows through the connecting pipe and enters the low-leakage high-sealing valve, the filter 106 filters out impurities, preventing impurities from entering the valve body 101 and affecting the normal operation of the valve. The sealing assembly controls the opening or closing of the valve according to changes in system pressure, ensuring the stability and safety of the system pressure. Whether it is a gas or liquid medium, the low-leakage high-sealing valve assembly 100 can effectively play its role, ensuring the safe and stable operation of the pipeline system.

[0023] In one specific embodiment, the filter 106 is installed within the media channel 200, and its axis coincides with the axis of the inlet 104 in the receiving cavity. The filter 106 has a conical structure, and its surface has a plurality of spaced-apart filter holes 107.

[0024] The filter 106 in the low-leakage, high-sealing valve assembly 100 described in this application is a conical structure installed within the media channel 200, with multiple spaced filter holes 107 on its surface. Furthermore, the axis of the filter 106 coincides with the axis of the inlet 104 in the receiving cavity, ensuring smooth media flow into the filter 106. This design increases the filter area and improves filtration efficiency, effectively filtering out impurities and particulate matter in the media, preventing them from entering the valve body 101 and avoiding valve blockage and jamming. In addition, the conical filter 106 has a self-cleaning advantage. Vertically installed at the inlet 104 of the media channel 200, the flowing media creates a scouring effect on the surface of the filter 106, automatically washing away impurities adhering to the filter holes 107 and the surface, reducing impurity accumulation and lowering the risk of blockage. This filter 106 design improves the valve's anti-clogging performance, reduces the need for manual maintenance, and ensures long-term stable valve operation, making it particularly suitable for pipeline systems containing gaseous or liquid media containing particulate matter or impurities.

[0025] In one specific implementation, the height of the filter 106 does not exceed the radius of the cross-section of the media channel 200.

[0026] The filter 106 in this application adopts a conical structure, and its height does not exceed the radius of the cross-section of the media channel 200. This size design aims to optimize the spatial layout of the filter 106 within the media channel 200, ensuring that the media can pass through the filter 106 uniformly, thereby improving filtration efficiency. Simultaneously, when the media pressure in the system increases, the filter 106 will not cause excessive resistance to media flow, ensuring smooth media flow. This design reduces the potential for impaired media flow due to an excessively large filter 106, avoids unnecessary resistance, and ensures that the overall operating efficiency of the system is not affected while maintaining filtration effectiveness.

[0027] In some embodiments, the filter 106 is detachably disposed in the receiving cavity of the valve body 101.

[0028] In the low-leakage, high-sealing valve assembly 100 provided in this application, the filter 106 is detachably disposed within the receiving cavity of the valve body 101, rather than being disposed within the media channel 200 as described in the aforementioned solutions. This layout optimizes the internal structure of the valve, making the installation and maintenance of the filter 106 more convenient. Specifically, the filter 106 can be a filter screen placed at the inlet 104 of the receiving cavity. This design effectively intercepts impurities while facilitating disassembly and cleaning. Alternatively, the filter 106 can be a hemispherical filter structure disposed within the receiving cavity. Its unique shape helps increase the filtration area, improve filtration efficiency, and is also easy to disassemble and maintain. This design not only enhances the filtration effect but also reduces interference with media flow, thereby improving the overall performance and reliability of the valve.

[0029] In one specific embodiment, the sealing assembly includes a sealing ball 110 and an elastic element 109. One end of the elastic element 109 is connected to the side wall at the outlet 105, and the other end is connected to the sealing ball 110. When the pressure in the medium channel 200 increases, the sealing ball 110 compresses the spring to close the outlet 105; when the pressure in the medium channel 200 decreases, the sealing ball 110 compresses the spring to open the outlet 105. The receiving cavity includes a first receiving cavity 102 and a second receiving cavity 103, and the cross-sectional area of ​​the first receiving cavity 102 is larger than the cross-sectional area of ​​the second receiving cavity 103. The second receiving cavity 103 has an annular sealing surface 111 near the side wall of the first receiving cavity 102, and the sealing surface 111 cooperates with the sealing ball 110 to close the outlet 105.

[0030] In the low-leakage, high-sealing valve assembly 100 described in this application, the structural design of the sealing component is crucial to the valve's functionality. This sealing component mainly includes a sealing ball 110 and an elastic element 109. One end of the elastic element 109 is connected to the side wall at the outlet 105 of the valve body 101, and the other end is connected to the sealing ball 110. When the pressure in the medium passage 200 increases, the medium pressure pushes the sealing ball 110 towards the outlet 105, thereby compressing the elastic element 109 and causing the sealing ball 110 to tightly fit against the outlet 105, thus closing the outlet 105, preventing medium leakage, and ensuring stable system pressure. Conversely, when the pressure in the medium passage 200 decreases below a preset value, the elastic restoring force of the elastic element 109 pushes the sealing ball 110 away from the outlet 105, thereby opening the outlet 105, allowing the medium to discharge smoothly, achieving the pressure relief function, and ensuring the safe operation of the system.

[0031] Furthermore, the receiving cavity of the valve body 101 in this application is cleverly divided into a first receiving cavity 102 and a second receiving cavity 103. A sealing ball 110 is disposed in the first receiving cavity 102, and an elastic element 109 is disposed in the second receiving cavity 103. The cross-sectional area of ​​the first receiving cavity 102 is larger than that of the second receiving cavity 103. An annular sealing surface 111 is provided on the side wall of the second receiving cavity 103 near the first receiving cavity 102. This sealing surface 111 precisely fits with the sealing ball 110. When the sealing ball 110 moves under pressure, it accurately conforms to the annular sealing surface 111, thereby achieving a tight seal of the outlet 105. This structural design not only improves the reliability of the seal but also enhances the adaptability and stability of the valve under different pressure conditions.

[0032] This design enables the sealing components to respond quickly and sensitively to changes in system pressure, effectively achieving the sealing and pressure relief functions of the low-leakage, high-sealing valve, and ensuring the safe and stable operation of the entire pipeline system.

[0033] The low-leakage, high-sealing valve assembly 100 provided in this application has two key advantages. First, it effectively prevents impurities in the medium from entering the receiving cavity, avoiding the accumulation of impurities and particulate matter inside the valve, which could lead to valve blockage and affect normal function. Second, the assembly can automatically remove impurities from the surface of the filter 106 by means of medium flow, achieving an automatic cleaning function. This eliminates the tedious process of manual cleaning, significantly reducing maintenance costs and improving system operating efficiency.

[0034] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A low-leak high-seal valve assembly (100) characterized in that, include: A valve body (101) is fixed to the opening of a medium channel (200) by a mounting base (108); the valve body (101) includes an inlet (104) and an outlet (105) communicating with a receiving cavity, and a sealing assembly disposed within the receiving cavity, the sealing assembly being used to open or close the outlet (105); and A filter (106) is installed at the inlet (104) of the receiving cavity and is used to filter impurities in the medium entering the receiving cavity.

2. The low-leak high-seal valve assembly (100) of claim 1, wherein, The filter (106) has a conical structure and its surface has a plurality of spaced filter holes (107).

3. The low-leak high-seal valve assembly (100) of claim 2, wherein, The filter (106) is installed in the media channel (200), and its axis coincides with the axis of the inlet (104) in the receiving cavity.

4. The low-leak high-seal valve assembly (100) according to any one of claims 1-3, characterized in that, The height of the filter (106) does not exceed the radius of the cross-section of the media channel (200).

5. The low-leak high-seal valve assembly (100) of claim 2, wherein, The filter (106) is detachably disposed in the receiving cavity of the valve body (101).

6. The low-leak high-seal valve assembly (100) of claim 1, wherein, The sealing assembly includes a sealing ball (110) and an elastic element (109), one end of which is connected to the side wall at the outlet (105), and the other end is connected to the sealing ball (110); When the pressure in the medium channel (200) increases, the sealing ball (110) compresses the spring to close the outlet (105); when the pressure in the medium channel (200) decreases, the sealing ball (110) compresses the spring to open the outlet (105).

7. The low-leak high-seal valve assembly (100) of claim 6, wherein, The receiving cavity includes a first receiving cavity (102) and a second receiving cavity (103), and the cross-sectional area of ​​the first receiving cavity (102) is greater than the cross-sectional area of ​​the second receiving cavity (103); The second receiving cavity (103) is provided with an annular sealing surface (111) near the side wall of the first receiving cavity (102), and the sealing surface (111) cooperates with the sealing ball (110) to close the outlet (105).

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