Gate valve plug assembly and high temperature resistant gate valve plug thereof

Abstract

The utility model discloses a plug assembly of gate valve and high temperature resistant plug valve thereof, plug assembly of gate valve includes: plug and the sealing assembly of being connected in the plug, the plug has sealing face, and the sealing assembly sets up on sealing face, wherein the sealing assembly includes low heat conductivity support ring. Plug assembly of gate valve and high temperature resistant plug valve thereof of the utility model, its sealing assembly between valve body and plug adopts the combination design of low heat conductivity ceramic ring or PEEK material ring and sealing ring, improves the durability of sealing ring in high temperature environment and reduces heat transfer speed through low heat conductivity support ring, after long time use, and support ring still can provide the supporting force, so that sealing ring can maintain enough sealing property in the closed state of gate valve.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to a gate valve slide assembly and its high-temperature resistant slide valve. Background Technology

[0002] A slide gate valve is a type of gate valve, widely used in applications requiring large-flow gas or liquid shut-off control. Traditional slide gate valves use a drive module to move a slide closer to or further away from the valve body, thus blocking or opening the passage on the valve body. A seal is used between the slide and the valve body to improve sealing performance in the blocked state. However, when traditional slide gate valves are used in high-temperature environments, their service life is significantly reduced, and their sealing performance also decreases noticeably. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a gate valve slide assembly and its high-temperature resistant slide valve to solve the technical problem of reduced service life of existing slide valves under high-temperature environments.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, embodiments of the present invention provide a gate valve slide assembly, comprising: a slide and a sealing assembly connected to the slide; the slide has a sealing surface, and the sealing assembly is disposed on the sealing surface, wherein the sealing assembly includes a low thermal conductivity support ring.

[0005] The low thermal conductivity support ring is a ceramic ring or a PEEK material ring.

[0006] The sealing assembly further includes a first sealing ring, which is disposed on the top surface of the low thermal conductivity support ring.

[0007] The sealing assembly further includes a second sealing ring, which is disposed on the bottom surface of the low thermal conductivity support ring.

[0008] The sealing surface is recessed with an installation groove, and the second sealing ring is recessed into the installation groove.

[0009] Secondly, embodiments of this utility model provide a high-temperature resistant gate valve, which includes a gate valve gate assembly as described in any of the above claims.

[0010] The high-temperature resistant slide gate valve includes a valve body with a fluid passage. When the slide gate is moved in a controlled manner and the sealing surface abuts against the periphery of the end of the fluid passage, the sealing assembly is pressed between the valve body and the slide gate.

[0011] The high-temperature resistant slide gate valve includes a drive module, the movable end of which is connected to the slide gate and is used to drive the slide gate to move closer to or away from the fluid passage of the valve body.

[0012] The valve body includes a first flange and a second flange, which are arranged opposite to each other, and the fluid through hole is opened on the first flange and the second flange.

[0013] The valve body further includes a wedge-shaped connector with a receiving cavity inside. The front end of the wedge-shaped connector is connected to the first flange and the second flange, and the rear end of the wedge-shaped connector is connected to the drive module. The gate valve's slide plate assembly is disposed within the receiving cavity.

[0014] The gate valve slide plate assembly and its high-temperature resistant slide plate valve of this utility model adopt a combination design of a low thermal conductivity ceramic ring or PEEK material ring and a sealing ring for the sealing component between the valve body and the slide plate. The low thermal conductivity support ring improves the durability of the sealing ring in high-temperature environments and reduces the heat transfer rate. After long-term use, the support ring can still provide support force, so that the sealing ring can maintain sufficient sealing performance in the closed state of the gate valve.

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the high-temperature resistant slide gate valve according to an embodiment of the present invention.

[0017] Figure 2 This is a side view of the high-temperature resistant slide gate valve according to an embodiment of the present invention.

[0018] Figure 3 This is a front view of the high-temperature resistant slide gate valve according to an embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram of the wedge-shaped connector and drive module of the high-temperature resistant slide gate valve according to an embodiment of the present invention.

[0020] Figure 5 for Figure 4 The exploded view of the structure shown.

[0021] Figure 6 This is a schematic diagram of the assembly state of the gate valve's gate plate assembly and sealing component in an embodiment of the present invention.

[0022] Figure 7 for Figure 6 Exploded view of the structure shown.

[0023] Figure 8 This is a side view of the high-temperature resistant slide gate valve according to an embodiment of the present invention.

[0024] Figure 9 for Figure 8 The sectional view shown is along line AA.

[0025] Figure 10 for Figure 9 The diagram shows a magnified view of part A.

[0026] Figure 11 This is a schematic diagram of the valve body structure of the high-temperature resistant slide gate valve according to an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures: High-temperature resistant slide gate valve 100, valve body 1, drive module 2, slide gate assembly 3, valve body 11, receiving cavity 101, first flange 111, second flange 112, fluid through hole 113, support plate 114, wedge connector 12, upper housing 121, lower housing 122, alignment through hole 123, housing 21, moving end 22, slide gate 31, sealing surface 312, mounting groove 3121, low thermal conductivity support ring 32, connecting ear 321, first sealing ring 33, second sealing ring 34. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] A slide gate valve is a type of gate valve, widely used in the control of large flow rates of gas or liquid. Traditional slide gate valves use a drive module to move the slide closer to or further away from the valve body, thereby blocking or opening the passage on the valve body. A seal is used between the slide and the valve body to improve sealing performance in the blocked state. However, when traditional slide gate valves are used in high-temperature environments, their service life is significantly reduced, and their sealing performance is also noticeably compromised. To address these issues, this embodiment discloses a slide gate assembly for a gate valve and its high-temperature resistant slide gate valve 100.

[0036] Please see Figures 1 to 11 This embodiment provides a gate valve slide block assembly and its high-temperature resistant slide block valve 100. The high-temperature resistant slide block valve 100 includes a valve body 1, a drive module 2, and a slide block assembly 3. The valve body 1 is used to connect to an external gas or liquid pipeline and has a cavity inside. The drive module 2 is connected to the valve body 1 and is used to control the movement of the slide block assembly 3, so that the slide block assembly 3 moves closer to or away from the valve body 1, thereby realizing the on / off control of the cavity.

[0037] The insert plate assembly 3 includes an insert plate 31 and a sealing assembly connected to the insert plate 31. The insert plate 31 has a sealing surface 312, and the sealing assembly is disposed on the sealing surface 312. When the insert plate assembly 3 moves to the fluid blocking position of the valve body 1, the middle part of the sealing surface 312 blocks the cavity, and the sealing assembly abuts between the sealing surface 312 and the end of the cavity, thereby forming a fluid flow channel between the valve body 1 and the insert plate assembly 3. At the same time, a seal is formed around the abutment surface between the insert plate assembly 3 and the valve body 1, blocking the cavity inside the valve body 1 and preventing fluid flow.

[0038] In existing technologies, sealing components generally use conventional sealing rings. When applied to normal temperature environments, these rings can generally meet the design service life and reliability requirements. However, when slide gate valves using simple sealing rings are applied to high-temperature environments, the sealing rings are affected by the high temperature, resulting in slower aging, a rapid decrease in flexibility, and ultimately a significant reduction in service life. This leads to a significant increase in replacement or operating costs for users, while also affecting equipment operating efficiency.

[0039] Due to the shortcomings of existing conventional sealing components, the sealing component of the insert assembly 3 in this embodiment includes a low thermal conductivity support ring 32.

[0040] Specifically, the low thermal conductivity support ring 32 is a ceramic ring or a PEEK ring. It is understood that in other embodiments, the low thermal conductivity support ring 32 can also be made of other annular support components with low thermal conductivity. PEEK (polyether ether ketone) is a high-performance specialty engineering plastic widely used in high-end industrial fields due to its excellent comprehensive properties.

[0041] Please refer to it again. Figure 6 The sealing assembly further includes a first sealing ring 33, which is disposed on the top surface of the low thermal conductivity support ring 32.

[0042] The principle behind the low thermal conductivity support ring 32 improving the service life of the sealing assembly in this embodiment is as follows: When the slide gate assembly 3 and its high-temperature resistant slide gate valve 100 are used in a high-temperature environment, the external ambient heat energy is first conducted to the slide gate 31 through the valve body 1, and finally conducted to the sealing assembly. Since the sealing assembly in this embodiment includes a low thermal conductivity support ring 32, this low thermal conductivity support ring 32 reduces the rate at which heat continues to be conducted, that is, it reduces the rate at which heat is transferred to the first sealing ring 33. Therefore, when the slide gate valve is closed, the low-temperature first sealing ring 33 is at an even lower temperature when in contact with the valve body 1, ultimately significantly improving the service life of the sealing assembly. Simultaneously, after prolonged use, the first sealing ring 33 undergoes aging and other deterioration, and the low thermal conductivity support ring 32 can continue to provide greater support force, preventing leakage at the seal.

[0043] The annular shape of the low thermal conductivity support ring 32 is similar to the profile of the cavity within the blocked valve body 1. This sealing assembly is mainly used to seal the portion of the cavity end edge that contacts the sealing surface 312.

[0044] Furthermore, the sealing assembly also includes a second sealing ring 34, which is disposed on the bottom surface of the low thermal conductivity support ring 32. That is, the first sealing ring 33 and the second sealing ring 34 are respectively connected to the top and bottom surfaces of the low thermal conductivity support ring 32. When the insert plate assembly 3 contacts and blocks the valve body 1, the first sealing ring 33 abuts against the edge of the end of the valve body 1, and the second sealing ring 34 abuts against the insert plate 31.

[0045] The sealing surface 312 has a recessed mounting groove 3121, in which the second sealing ring 34 is recessed. The mounting groove 3121 facilitates the assembly of the second sealing ring 34 and prevents it from shifting during long-term use.

[0046] The low thermal conductivity support ring 32 is an annular sheet structure with a flat bottom and top surface.

[0047] In this embodiment, the insert plate 31 is a wedge-shaped structure, and its sealing surface 312 is inclined relative to the bottom surface 31. The low thermal conductivity support ring 32 is also provided with a connecting lug 321. The low thermal conductivity support ring 32 can be securely connected to the insert plate 31 by screws passing through the connecting lug 321.

[0048] Please refer to it again. Figures 1 to 11The present invention provides a high-temperature resistant gate valve 100, which includes a gate assembly 3 as described in any of the above embodiments.

[0049] Specifically, the high-temperature resistant slide gate valve 100 includes a valve body 1, on which a fluid through hole 113 is provided. When the slide gate 31 is moved in a controlled manner and the sealing surface 312 abuts against the end periphery of the fluid through hole 113 (that is, the end edge of the cavity mentioned above), the sealing assembly is pressed between the valve body 1 and the slide gate 31, thereby sealing the abutment position of the two.

[0050] Please refer to it again. Figure 5 The high-temperature resistant slide gate valve 100 includes a drive module 2, the movable end 22 of which is connected to the slide gate 31 and is used to drive the slide gate 31 to approach or move away from the fluid passage 113 of the valve body 1.

[0051] The drive module 2 can perform linear reciprocating drive, and includes a controllable linear drive mechanism such as a cylinder, electric cylinder or servo motor.

[0052] Please refer to it again. Figure 3 , Figure 4 and Figure 11 The valve body 1 includes a valve body 11, which includes a first flange 111 and a second flange 112. The first flange 111 and the second flange 112 are arranged opposite each other. The edges of the first flange 111 and the second flange 112 are connected by a support piece 114. The fluid through hole 113 is opened on the first flange 111 and the second flange 112.

[0053] A clamping cavity is reserved between the first flange 111 and the second flange 112, which is used to provide movement space for the insert plate assembly 3.

[0054] Furthermore, such as Figure 4 and 10 As shown, the valve body 1 also includes a wedge-shaped connector 12, which has a receiving cavity 101. The front end of the wedge-shaped connector 12 is connected to the first flange and the second flange 112, and the rear end of the wedge-shaped connector 12 is connected to the drive module 2. The gate valve's slide plate assembly 3 is disposed in the receiving cavity 101.

[0055] The wedge-shaped connector 12 includes an upper housing 121 and a lower housing 122, which are snapped together to form the receiving cavity 101. Alignment through holes 123 are provided on both the upper and lower housings 121 and 122, and the outline of the alignment through holes 123 is approximately the same as that of the fluid through hole 113. The rear end of the wedge-shaped connector 12 is connected to the housing 21 of the drive module 2. The drive module 2 forms an integral structure with the insert plate assembly 3 through the wedge-shaped connector 12 of the valve body 1. The upper housing 121 is aligned and connected to the first flange 111, and the lower housing 122 is aligned and connected to the second flange 112, with the fluid through hole 113 communicating with the alignment through hole 123. In this structure, the insert plate 31 of the insert plate assembly 3 is controlled to extend and retract in a direction that is approximately parallel to the drive module 2 and the clamping cavity. When the insert plate assembly 3 enters the valve blocking state, the insert plate 31 abuts against the edge of the alignment through hole 123 of the upper housing 121, and the sealing assembly is pressed between the edge of the hole and the insert plate 31.

[0056] Similarly, when the slide gate assembly 3 is applied to the high-temperature resistant slide gate valve 100, the principle of improving its service life is the same as that of the slide gate assembly 3 when used independently, and will not be elaborated here.

[0057] The gate valve slide assembly and its high-temperature resistant slide valve of this embodiment adopt a combination design of a low thermal conductivity ceramic ring or PEEK material ring and a sealing ring for the sealing component between the valve body and the slide. The low thermal conductivity support ring improves the durability of the sealing ring in high-temperature environments and reduces heat conduction. After long-term use, the support ring can still provide support force, so that the sealing ring can maintain sufficient sealing in the closed state of the gate valve.

[0058] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A gate valve slide assembly, characterized in that, include: Insert plate and sealing assembly connected to the insert plate; The insert plate has a sealing surface, and the sealing assembly is disposed on the sealing surface, wherein the sealing assembly includes a low thermal conductivity support ring.

2. The gate valve slide assembly according to claim 1, characterized in that, The low thermal conductivity support ring is a ceramic ring or a PEEK material ring.

3. The gate valve slide assembly according to claim 2, characterized in that, The sealing assembly further includes a first sealing ring disposed on the top surface of the low thermal conductivity support ring.

4. The gate valve slide assembly according to claim 3, characterized in that, The sealing assembly further includes a second sealing ring disposed on the bottom surface of the low thermal conductivity support ring.

5. The gate valve slide assembly according to claim 4, characterized in that, The sealing surface is recessed with an installation groove, and the second sealing ring is recessed into the installation groove.

6. A high-temperature resistant slide gate valve, characterized in that, The high-temperature resistant gate valve includes the gate assembly of the gate valve as described in any one of claims 1 to 5.

7. The high-temperature resistant slide gate valve according to claim 6, characterized in that, The high-temperature resistant slide gate valve includes a valve body with a fluid passage. When the slide gate is moved in a controlled manner and the sealing surface abuts against the end periphery of the fluid passage, the sealing assembly is pressed between the valve body and the slide gate.

8. The high-temperature resistant slide gate valve according to claim 7, characterized in that, The high-temperature resistant slide gate valve includes a drive module, the movable end of which is connected to the slide gate and is used to drive the slide gate to move closer to or away from the fluid passage of the valve body.

9. The high-temperature resistant slide gate valve according to claim 8, characterized in that, The valve body includes a first flange and a second flange, which are arranged opposite to each other, and the fluid through hole is opened on the first flange and the second flange.

10. The high-temperature resistant slide gate valve according to claim 9, characterized in that, The valve body also includes a wedge-shaped connector with a receiving cavity inside. The front end of the wedge-shaped connector is connected to the first flange and the second flange, and the rear end of the wedge-shaped connector is connected to the drive module. The gate valve's slide plate assembly is disposed in the receiving cavity.

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