High-temperature wear-resistant gate valve

Abstract

The high-temperature wear-resistant gate valve comprises a valve body, a valve rod is arranged in the valve body, a shell is installed at the lower end of the side wall of the valve rod in a sliding mode, valve plate installation seats are installed on the two sides of the shell in a sliding mode, ceramic valve plates are arranged on the valve plate installation seats, and annular wear-resistant sealing gaskets are arranged on the side walls of the ceramic valve plates. The bottom of the valve rod extends into the shell and is provided with an ejector block, the ends, close to each other, of the two valve plate mounting seats are fixedly connected with one end of a connecting rod, the other end of the connecting rod penetrates through the shell and is provided with an abutting block matched with the ejector block, and a spring is arranged on the outer side of the connecting rod and located between the abutting block and the inner wall of the shell. The utility model relates to the technical field of gate valves, when high-temperature liquid is conveyed, the ceramic valve plate arranged on the valve plate mounting seat is in contact with high-temperature water, so that the problem that the valve plate is deformed after being soaked by high-temperature water flow is effectively avoided, and the wear-resistant and sealing effects of the valve plate are ensured by arranging the annular wear-resistant sealing gasket.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically to a high-temperature wear-resistant gate valve. Background Technology

[0002] A gate valve is an opening and closing element consisting of a gate. The direction of movement of the gate is perpendicular to the direction of fluid flow. Gate valves can only be fully open or fully closed, and cannot be used for regulation or throttling. Gate valves achieve sealing through the contact between the valve seat and the gate. Usually, metal materials are welded onto the sealing surface to increase wear resistance.

[0003] However, in the process of using traditional gate valves, when transporting high-temperature liquids, the valve plate is prone to deformation after being immersed in high-temperature water flow, which reduces the wear resistance of the valve plate itself. Therefore, a high-temperature wear-resistant gate valve is provided. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature wear-resistant gate valve to solve the problem that the valve plate is prone to deformation after being immersed in high-temperature water, which reduces the wear resistance of the valve plate itself.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature wear-resistant gate valve, comprising a valve body, a valve stem provided inside the valve body, a housing slidably mounted on the lower end of the side wall of the valve stem, valve plate mounting seats slidably mounted on both sides of the housing, a ceramic valve plate provided on the valve plate mounting seat, and an annular wear-resistant sealing gasket provided on the side wall of the ceramic valve plate;

[0006] The bottom of the valve stem extends into the housing and is provided with a top block. One end of a connecting rod is fixedly connected to one end of each of the two valve plate mounting seats that are close to each other. The other end of the connecting rod passes through the housing and is provided with an abutment block that matches the top block. A spring is provided on the outside of the connecting rod and between the abutment block and the inner wall of the housing.

[0007] Preferably, the annular wear-resistant sealing gasket is made of PE material.

[0008] Preferably, the cross-section of the annular wear-resistant sealing gasket is trapezoidal, and the inner wall of the valve body is provided with an annular sealing groove that matches the annular wear-resistant sealing gasket.

[0009] Preferably, a gap is provided between the bottom of the annular sealing groove and the annular wear-resistant sealing gasket.

[0010] Preferably, the two side walls of the housing are provided with a plurality of evenly distributed guide grooves, and the side wall of the valve plate mounting seat is provided with a guide rod extending into the guide groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a high-temperature wear-resistant gate valve. When conveying high-temperature liquids, the ceramic valve plate set on the valve plate mounting seat comes into contact with the high-temperature water, effectively avoiding the problem of deformation of the valve plate after being immersed in high-temperature water. The annular wear-resistant sealing gasket ensures the wear resistance and sealing effect of the valve plate itself. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0013] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A.

[0014] In the diagram: 1. Valve body; 2. Valve stem; 3. Housing; 4. Valve plate mounting seat; 5. Ceramic valve plate; 6. Annular wear-resistant sealing gasket; 7. Top block; 8. Connecting rod; 9. Abutment block; 10. Spring; 11. Annular sealing groove; 12. Guide groove; 13. Guide rod. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-2 This utility model provides a technical solution: a high-temperature wear-resistant gate valve, including a valve body 1, a valve stem 2 inside the valve body 1, a housing 3 slidably mounted on the lower end of the side wall of the valve stem 2, valve plate mounting seats 4 slidably mounted on both sides of the housing 3, a ceramic valve plate 5 on the valve plate mounting seat 4, and an annular wear-resistant sealing gasket 6 on the side wall of the ceramic valve plate 5; the bottom of the valve stem 2 extends into the housing 3 and is provided with a top block 7, and one end of a connecting rod 8 is fixedly connected to one end of each of the two valve plate mounting seats 4 that are close to each other, and the other end of the connecting rod 8 penetrates the housing 3 and is provided with an abutment block 9 that matches the top block 7, and a spring 10 is provided on the outside of the connecting rod 8 and between the abutment block 9 and the inner wall of the housing 3. When transporting high-temperature liquid, the ceramic valve plate 5 provided on the valve plate mounting seat 4 comes into contact with high-temperature water, effectively avoiding the problem of deformation of the valve plate after being soaked in high-temperature water flow, and the annular wear-resistant sealing gasket 6 ensures the wear resistance and sealing effect of the valve plate itself.

[0017] Specifically, the annular wear-resistant sealing gasket 6 is made of PE material, which effectively improves the wear resistance of the annular wear-resistant sealing gasket 6.

[0018] Specifically, the cross-section of the annular wear-resistant sealing gasket 6 is set as trapezoidal, and the inner wall of the valve body 1 is provided with an annular sealing groove 11 that is adapted to the annular wear-resistant sealing gasket 6. The annular wear-resistant sealing gasket 6 and the annular sealing groove 11 are used to seal the ceramic valve plate 5 and the valve body 1.

[0019] Specifically, a gap is provided between the bottom of the annular sealing groove 11 and the annular wear-resistant sealing gasket 6. Through the gap between the annular sealing groove 11 and the annular wear-resistant sealing gasket 6, the sealing effect of the annular wear-resistant sealing gasket 6 is effectively guaranteed during long-term use.

[0020] Specifically, the two side walls of the housing 3 are provided with several evenly distributed guide grooves 12, and the side wall of the valve plate mounting seat 4 is provided with a guide rod 13 extending into the guide groove 12. By moving the guide rod 13 in the guide groove 12, the valve plate mounting seat 4 and the ceramic valve plate 5 can move horizontally to seal the valve body and effectively reduce the friction between the ceramic valve plate 5 and the inner wall of the valve body 1 during the opening or closing of the gate valve.

[0021] Working principle: During use, the valve stem 2 descends, causing the housing 3 to descend. When the bottom of the housing 3 contacts the bottom surface of the valve body 1, the valve stem 2 causes the top block 7 to descend. The top block 7 causes the abutment blocks 9 on both sides, the connecting rod 8, the valve plate mounting seat 4, and the ceramic valve plate 5 to move to both sides, and is sealed by the annular wear-resistant sealing gasket 6, thus realizing the use of the gate valve.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 invention based on the specific circumstances.

[0023] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature wear-resistant gate valve, comprising a valve body (1), wherein a valve stem (2) is provided inside the valve body (1), characterized in that: A housing (3) is slidably installed on the lower end of the side wall of the valve stem (2), and valve plate mounting seats (4) are slidably installed on both sides of the housing (3). A ceramic valve plate (5) is provided on the valve plate mounting seat (4), and an annular wear-resistant sealing gasket (6) is provided on the side wall of the ceramic valve plate (5). The bottom of the valve stem (2) extends into the housing (3) and is provided with a top block (7). The two valve plate mounting seats (4) are fixedly connected to one end of a connecting rod (8) at their close ends. The other end of the connecting rod (8) passes through the housing (3) and is provided with an abutment block (9) that matches the top block (7). A spring (10) is provided on the outside of the connecting rod (8) and between the abutment block (9) and the inner wall of the housing (3).

2. The high-temperature wear-resistant gate valve according to claim 1, characterized in that: The annular wear-resistant sealing gasket (6) is made of PE material.

3. The high-temperature wear-resistant gate valve according to claim 1, characterized in that: The cross-section of the annular wear-resistant sealing gasket (6) is set as trapezoidal, and the inner wall of the valve body (1) is provided with an annular sealing groove (11) that is adapted to the annular wear-resistant sealing gasket (6).

4. A high-temperature wear-resistant gate valve according to claim 3, characterized in that: A gap is provided between the bottom of the annular sealing groove (11) and the annular wear-resistant sealing gasket (6).

5. A high-temperature wear-resistant gate valve according to claim 1, characterized in that: The housing (3) has several evenly distributed guide grooves (12) on both sides of its side walls, and the valve plate mounting seat (4) has a guide rod (13) extending into the guide groove (12) on its side wall.

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