A high temperature relief valve

Abstract

The utility model provides a kind of high temperature relief valve belongs to flue gas valve technical field.The technical problem of sealing property drop after long time use of high temperature relief valve under high temperature is solved.The technical scheme is as follows: a kind of high temperature relief valve, including valve body and valve plate, the valve plate rotation is arranged in valve body, the two side walls of the valve body passage are provided with baffle strip, when the valve plate is closed, the two sides of valve plate are respectively attached to two baffle strips, realize the closure to the valve body passage.The utility model has the beneficial effect that: by the setting of baffle strip, the contact surface that is closed with valve plate cooperation is increased, plus the original sealing of valve plate and valve body inner wall, to improve the closure of valve body.

Description

Technical Field

[0001] This utility model relates to the field of flue gas valve technology, and in particular to a high-temperature relief valve. Background Technology

[0002] High-temperature relief valves are mostly used for the transmission of high-temperature gases and are commonly found in equipment such as incinerators that generate high-temperature gases and need to discharge them.

[0003] Existing high-temperature relief valves include a valve body and a valve plate. The valve plate is located within a channel of the valve body, and rotating shafts are connected to both sides of the valve plate. The side walls of the valve plate connected to the rotating shafts are always in contact with the corresponding inner walls of the valve body channel. One end of the rotating shaft is connected to a power unit. The valve body is connected to two pipelines of the production equipment via flange structures at both ends. When gas in the pipeline needs to be discharged, the power unit is started, driving the rotating shaft to rotate, which in turn drives the valve plate to a position parallel to the valve body channel, thus connecting the two pipelines and allowing gas to be discharged. Simultaneously, when the pipeline needs to be closed, the power unit is started, causing the rotating shaft to reverse, driving the valve plate to rotate until both sides of the valve plate are in contact with the inner walls of the pipeline, thus closing the pipeline.

[0004] To achieve high temperature resistance, the valve plate and valve body are mostly made of metal. After working in a high-temperature environment for a long time, deformation can easily occur between the two sides of the valve plate and the inner wall of the valve body, resulting in gaps and a decrease in the sealing performance of the high-temperature relief valve. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature relief valve that can improve sealing performance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-temperature relief valve, comprising a valve body and a valve plate, wherein the valve plate is rotatably disposed within the valve body, characterized in that baffles are provided on both side walls of the valve body, and when the valve plate is closed, the two sides of the valve plate respectively abut against the two baffles to achieve sealing of the valve body.

[0007] Furthermore, the valve plate end wall is provided with a stepped groove. When the valve plate is closed, the baffle is located in the stepped groove and is in contact with the bottom wall of the stepped groove.

[0008] Furthermore, the sidewall of the stepped groove is provided with a V-shaped elastic element, the opening of the V-shaped elastic element facing the bottom wall of the stepped groove, one side of the V-shaped elastic element is fixedly connected to the sidewall of the stepped groove, and the other side is used to abut against the end wall of the baffle.

[0009] When the valve plate rotates to close, the stop bar rotates into the stepped groove under relative rotation. At the same time, the stop bar contacts the side wall of the V-shaped elastic element and further squeezes the V-shaped elastic element under relative movement, causing the V-shaped elastic element to compress. After the stop bar stops moving relative to the valve plate, the side wall of the stop bar and the side wall of the V-shaped elastic element are pressed together, thereby increasing the sealing surface between the stop bar and the valve plate. At the same time, the elastic force of the V-shaped elastic element acts on the side wall of the stop bar. When the stop bar moves relative to the valve plate, it generates static friction force, which prevents the valve plate from separating from the stop bar.

[0010] Furthermore, the edge of the unfixed side of the V-shaped elastic element curls inward. Normally, the side of the V-shaped elastic element is a straight plate. When the valve plate rotates to open, the edge of the V-shaped elastic element's side interacts with the side wall of the stop bar, generating significant resistance. By curling the side wall of the V-shaped elastic element, the outer side wall of the V-shaped elastic element near the stop bar becomes an arc surface. When the valve plate rotates to open, the arc surface of the V-shaped elastic element's side always contacts the stop bar until the stop bar leaves the stepped groove, reducing the resistance when the valve plate opens.

[0011] Furthermore, the stop bar has an arc-shaped wall on the side closest to the V-shaped elastic element. The arc-shaped wall reduces the resistance generated when the edge of the stop bar moves relative to the side wall of the V-shaped elastic element.

[0012] Furthermore, the side of the baffle strip with the arc-shaped wall also has a sloping wall. When the baffle strip is located in the stepped groove, the sloping wall is in contact with the side wall of the V-shaped elastic element. The sloping wall increases the contact area between the baffle strip and the V-shaped elastic element, further improving the sealing performance.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. By setting up the baffle, the contact surface for sealing with the valve plate is increased. Combined with the original seal between the valve plate and the inner wall of the valve body, the sealing performance of the valve body is improved. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the high-temperature relief valve according to an embodiment of the present invention.

[0017] Figure 2 This is a partial cross-sectional view of the high-temperature relief valve according to an embodiment of the present invention, viewed from a top perspective.

[0018] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0019] The attached figures are labeled as follows: 1. Valve body; 11. Stop bar; 111. Arc wall; 112. Sloping wall; 2. Valve plate; 21. Valve shaft; 22. Pneumatic actuator assembly; 23. Stepped groove; 3. V-shaped elastic element. Detailed Implementation

[0020] 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 embodiments. Of course, the specific embodiments described herein are only for explaining this utility model and are not intended to limit it.

[0021] See Figure 1-3 The present invention provides a high-temperature relief valve, comprising a valve body 1 and a valve plate 2. The valve body 1 includes an inner valve body and an outer valve body, with high-temperature resistant cotton connected between the inner and outer valve bodies. Flange structures are provided at both ends of the outer valve body for connection to pipelines. The channel of the valve body 1 is located inside the inner valve body. The valve plate 2 is connected to the inner valve body. Valve shafts 21 are fixedly connected to both sides of the valve plate 2. One valve shaft 21 is rotatably connected to an external support, and the other valve shaft 21 is connected to a pneumatic actuator assembly 22. The two sides of the valve plate 2 connected to the valve shaft 21 are in contact with the inner wall of the channel of the valve body 1.

[0022] Furthermore, baffles 11 are fixedly connected to both sides of the valve body 1 channel. The baffles 11 can be connected by welding. Stepped grooves 23 are opened on the end walls of the valve plate 2 on both sides not connected to the valve shaft 21.

[0023] Furthermore, a V-shaped elastic element 3 is provided on the side wall of the stepped groove 23. The opening of the V-shaped elastic element 3 faces the bottom wall of the corresponding stepped groove 23. The V-shaped elastic element 3 is obtained by bending an elastic metal material into a V shape. One side of the V-shaped elastic element 3 is fixedly connected to the side wall of the stepped groove 23. The edge of the side of the V-shaped elastic element 3 that is not fixed curls inward toward the inside of the V-shaped elastic element 3.

[0024] Furthermore, an arc-shaped wall 111 is provided on the side of the baffle 11 near the V-shaped elastic member 3, and an inclined wall 112 is also provided on the side of the baffle 11 where the arc-shaped wall 111 is provided. When the baffle 11 is located in the stepped groove 23, the inclined wall 112 is used to abut against the side wall of the V-shaped elastic member 3.

[0025] When the valve plate 2 rotates to close, both sides of the valve plate 2 are in contact with the side wall of the valve body 1 channel. At the same time, the baffle 11 enters the stepped groove 23. Simultaneously, the arc-shaped wall 111 of the baffle 11 contacts the side wall of the V-shaped elastic element 3 and further compresses the V-shaped elastic element 3 under relative movement, causing the V-shaped elastic element 3 to compress. After the baffle 11 stops moving relative to the valve plate 2, the inclined wall 112 of the baffle 11 abuts against the side wall of the V-shaped elastic element 3, thereby increasing the sealing surface between the baffle 11 and the valve plate 2. At the same time, the elastic force of the V-shaped elastic element 3 acts on the side wall of the baffle 11. When the baffle 11 moves relative to the valve plate 2, static friction is generated, preventing the valve plate 2 from separating from the baffle 11.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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. A high-temperature relief valve, comprising a valve body (1) and a valve plate (2), wherein the valve plate (2) is rotatably disposed within the valve body (1), characterized in that, The valve body (1) channel is provided with baffles (11) on both sides of the side wall. When the valve plate (2) is closed, the two sides of the valve plate (2) are respectively attached to the two baffles (11) to close the valve body (1) channel. The valve plate (2) end wall is provided with a stepped groove (23). When the valve plate (2) is closed, the baffles (11) are located in the stepped groove (23) and are attached to the bottom wall of the stepped groove (23). The stepped groove (23) side wall is provided with a V-shaped elastic element (3). The opening of the V-shaped elastic element (3) faces the bottom wall of the stepped groove (23). One side of the V-shaped elastic element (3) is fixedly connected to the side wall of the stepped groove (23), and the other side is used to abut against the end wall of the baffle (11).

2. The high-temperature relief valve according to claim 1, characterized in that, The edge of the unfixed side of the V-shaped elastic element (3) curls inward toward the inside of the V-shaped elastic element (3).

3. The high-temperature relief valve according to claim 1, characterized in that, The baffle (11) has an arc-shaped wall (111) on the side near the V-shaped elastic element (3).

4. The high-temperature relief valve according to claim 3, characterized in that, The baffle (11) is provided with an arc-shaped wall (111) on one side and a sloping wall (112) is provided on the other side. When the baffle (11) is located in the stepped groove (23), the sloping wall (112) is used to abut against the side wall of the V-shaped elastic member (3).

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