Baffle with sealing device

Abstract

The utility model relates to the technical field of baffles, and provides a baffle with a sealing device, which comprises a plate body and a door frame, the plate body is positioned in the door frame, a rotating shaft is fixedly connected to the middle of the plate body, the rotating shaft is rotatably connected with the door frame, a sealing groove is arranged on one side of the plate body abutted against the door frame, the sealing groove is positioned in the middle of the plate body, and a plurality of sealing springs are arranged in the sealing groove. One end of the sealing spring is embedded into the plate body, the end, away from the plate body, of the sealing spring extends towards the door frame, the end, away from the plate body, of the sealing spring abuts against a first sealing strip, one side of the first sealing strip is located in the sealing groove, the first sealing strip is slidably connected with the plate body, and the side, facing the plate body, of the door frame is fixedly connected with a second sealing strip. The first sealing strip abuts against the second sealing strip, and a first inclined face is arranged on the side, abutting against the second sealing strip, of the first sealing strip. By means of the technical scheme, the problem that in the prior art, when an air door baffle is closed, complete sealing cannot be achieved, and air or smoke leaks is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of baffles, and specifically, to a baffle with a sealing device. Background Art

[0002] The boiler in a thermal power plant is a key device in the power generation system, responsible for converting the chemical energy of fuel into heat energy, and then converting the heat energy into mechanical energy to drive a steam turbine for power generation. The boiler mainly consists of a combustion system, an evaporation system, a superheating system, and auxiliary equipment. An efficiently operating boiler can not only improve the power generation efficiency but also effectively reduce pollutant emissions. Therefore, in the design and operation process, each component of the boiler requires refined management and optimization.

[0003] In the combustion system of the boiler, the air damper and the damper baffle are important regulating components. The air damper is responsible for controlling the amount of air entering the boiler combustion chamber to ensure complete combustion of the fuel and optimize the combustion efficiency. The damper baffle is used to regulate the flow of air and flue gas, maintain the pressure balance inside the boiler, prevent flue gas backflow, and ensure the safe operation of the boiler.

[0004] Currently, the widely used damper baffle generally has a poor sealing performance in practical applications. When the damper baffle is closed, it often cannot achieve complete sealing, resulting in air or flue gas leakage. As a result, the amount of air during the combustion process is inaccurate, affecting the combustion efficiency and further reducing the overall thermal efficiency of the boiler. Moreover, the flue gas leakage may cause the diffusion of harmful gases, increasing the health risks of operators and potentially triggering safety accidents. Summary of the Utility Model

[0005] The utility model provides a baffle with a sealing device, aiming to significantly improve the sealing performance of the damper baffle and solve the deficiencies in the prior art.

[0006] The technical solution of the utility model is as follows:

[0007] A baffle with a sealing device includes a plate body and a door frame. The plate body is located inside the door frame. A rotating shaft is fixedly connected to the middle of the plate body, and the rotating shaft is rotatably connected to the door frame. A sealing groove is provided on one side of the plate body in contact with the door frame, and the sealing groove is located in the middle of the plate body. A plurality of sealing springs are arranged in the sealing groove. One end of the sealing spring is embedded in the plate body, and the end of the sealing spring away from the plate body extends towards the door frame. A first sealing strip is abutted against the end of the sealing spring away from the plate body. One side of the first sealing strip is located in the sealing groove, and the first sealing strip is slidably connected to the plate body. A second sealing strip is fixedly connected to the side of the door frame facing the plate body. The first sealing strip abuts against the second sealing strip, and the sealing spring applies a force to the first sealing strip to move the first sealing strip. A first inclined surface for facilitating the abutment of the first sealing strip and the second sealing strip is provided on the side where the first sealing strip abuts against the second sealing strip.

[0008] Furthermore, a second inclined surface is provided on one side of the second sealing strip abutting against the first sealing strip, and the first inclined surface abuts against the second inclined surface.

[0009] Furthermore, a first sealing plate is provided at the edge of the plate body, the first sealing plate extends toward the door frame, and the first sealing plate abuts against the inner wall of the door frame and one side of the second sealing strip.

[0010] Furthermore, a second sealing plate is provided on the side of the second sealing strip away from the first sealing plate, the second sealing plate extends toward the center of the door frame, and the side of the second sealing plate facing the first sealing plate abuts against the side of the plate body away from the first sealing plate.

[0011] Furthermore, the first sealing strip and the second sealing strip are both made of graphite material.

[0012] The working principle and beneficial effects of the utility model are:

[0013] The utility model provides a sealing groove on the plate body, and provides a sealing spring and a first sealing strip in the sealing groove, so that the sealing spring and the first sealing strip are embedded in the plate body, thereby improving the sealing between the plate body and the first sealing strip. The sealing spring provides continuous pressure when the first sealing strip abuts against the second sealing strip, so that the first sealing strip and the second sealing strip always maintain close contact, ensuring the sealing effect when the baffle is closed, and maintaining good sealing performance even in high temperature or high pressure environments. The utility model ensures efficient sealing of the baffle when it is closed and reduces leakage of air or smoke through the coordinated use of the sealing groove, the sealing spring, the first sealing strip and the second sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 for Figure 2 Sectional view at AA;

[0018] Figure 4 This is a schematic diagram of the utility model showing the stroke door in an open state;

[0019] Figure 5 for Figure 4 sectional view of .

[0020] In the figure: 1. Plate body; 2. Door frame; 11. Rotating shaft; 12. First sealing strip; 13. Sealing spring; 14. Sealing groove; 15. First sealing plate; 21. Second sealing strip; 22. Second sealing plate; 121. First inclined surface; 211. Second inclined surface. Detailed implementation mode

[0021] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0022] As Figures 1 to 5 shown, this embodiment proposes a baffle with a sealing device, including a plate body 1 and a door frame 2. The plate body 1 is located inside the door frame 2. A rotating shaft 11 is fixedly connected to the middle of the plate body 1. The rotating shaft 11 is rotatably connected to the door frame 2. A sealing groove 14 is arranged on the side of the plate body 1 in contact with the door frame 2. The sealing groove 14 is located in the middle of the plate body 1. A number of sealing springs 13 are arranged in the sealing groove 14. One end of the sealing spring 13 is embedded in the plate body 1. The end of the sealing spring 13 away from the plate body 1 extends towards the door frame 2. A first sealing strip 12 is abutted against the end of the sealing spring 13 away from the plate body 1. One side of the first sealing strip 12 is located in the sealing groove 14. The first sealing strip 12 is slidably connected to the plate body 1. A second sealing strip 21 is fixedly connected to the side of the door frame 2 facing the plate body 1. The first sealing strip 12 abuts against the second sealing strip 21, and the sealing spring 13 applies a force to the first sealing strip 12 to move the first sealing strip 12. A first inclined surface 121 for facilitating the abutment of the first sealing strip 12 and the second sealing strip 21 is arranged on the side of the first sealing strip 12 in contact with the second sealing strip 21.

[0023] The door frame 2 is the air damper housing of the boiler intake pipe. The plate body 1 is the main part of the baffle, responsible for blocking air or flue gas. The rotating shaft 11 is rotatably connected to the door frame 2 and acts as a rotating shaft, enabling the plate body 1 to rotate; one end of the rotating shaft 11 passes through the door frame 2 and should be connected to a manual handle or an electric motor to achieve manual or automatic rotation. The sealing groove 14 is used to accommodate the sealing spring 13 and the first sealing strip 12. The design of the sealing groove 14 allows the sealing device to be embedded inside the plate body 1, improving the overall sealing performance of the baffle and reducing the leakage of air or flue gas. The sealing spring 13 provides continuous pressure, enabling the first sealing strip 12 and the second sealing strip 21 to always maintain close contact, ensuring the sealing effect when the baffle is closed and maintaining good sealing performance even in high-temperature or high-pressure environments. The first sealing strip 12 can slide within the sealing groove 14 and, in cooperation with the pressure of the sealing spring 13, achieve close contact with the second sealing strip 21, enhancing the sealing effect; the side of the sealing groove 14 facing the rotating shaft 11 should extend into the rotating shaft 11, and one end of the first sealing strip 12 should be embedded in the sealing groove 14 within the rotating shaft 11, so that the rotating shaft 11 can limit the sliding of the first sealing strip 12 when the first sealing strip 12 slides away from the plate body 1, preventing the first sealing strip 12 from slipping out of the sealing groove 14 and thus disconnecting it from the plate body 1. The second sealing strip 21 provides a stable sealing contact surface and, when used in conjunction with the first sealing strip 12, ensures the sealing performance of the baffle. The design of the first inclined surface 121 enables the abutment between the first sealing strip 12 and the second sealing strip 21 to be smoother during the rotation of the plate body 1, reducing friction and wear, and improving the service life and sealing effect of the sealing strip.

[0024] In this embodiment, a second inclined surface 211 is provided on the side of the second sealing strip 21 that abuts against the first sealing strip 12, and the first inclined surface 121 abuts against the second inclined surface 211. The second inclined surface 211 enables the abutting part between the second sealing strip 21 and the first inclined surface 121 to be closer, thereby enhancing the contact area and tightness between the first sealing strip 12 and the second sealing strip 21 and improving the sealing effect; the first inclined surface 121 and the second inclined surface 211 also cause a curved channel to be formed at the connection between the first sealing strip 12 and the second sealing strip 21 instead of a conventional straight channel, so that the pressure of the gas can gradually decrease when entering these channels, thereby reducing leakage.

[0025] In this embodiment, a first sealing plate 15 is provided at the edge of the plate body 1, and the first sealing plate 15 extends toward the door frame 2, and the first sealing plate 15 abuts against the inner wall of the door frame 2 and one side of the second sealing strip 21. The first sealing plate 15 provides an additional sealing layer between the first sealing strip 12 and the second sealing strip 21, further preventing leakage of air or smoke, improving the overall sealing performance, and enhancing the operating efficiency and safety of the boiler. The provision of the first sealing plate 15 increases the number of bends and the length of the bend channel between the first sealing strip 12 and the second sealing strip 21, further reducing the pressure of the gas in the channel, and further reducing leakage.

[0026] In this embodiment, a second sealing plate 22 is provided on the side of the second sealing strip 21 away from the first sealing plate 15, and the second sealing plate 22 extends toward the center of the door frame 2, and the side of the second sealing plate 22 facing the first sealing plate 15 abuts against the side of the plate body 1 away from the first sealing plate 15. The provision of the second sealing plate 22 further increases the sealing layer between the first sealing strip 12 and the second sealing strip 21, forming a multi-layer sealing structure, which effectively improves the reliability and stability of the seal. The second sealing plate 22 further increases the number of bends and the length of the curved channel between the first sealing strip 12 and the second sealing strip 21, further reducing the pressure of the gas in the channel and reducing gas leakage.

[0027] In this embodiment, the first sealing strip 12 and the second sealing strip 21 are both made of graphite material. Graphite material has excellent high temperature resistance and chemical stability, maintains good sealing performance in high temperature environment, prolongs the service life of the sealing strip, and reduces maintenance frequency and cost.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A baffle with a sealing device, comprising a plate body (1) and a door frame (2), the plate body (1) is located within the door frame (2), a rotating shaft (11) is fixedly connected to the middle of the plate body (1), and the rotating shaft (11) is rotatably connected to the door frame (2), characterized in that, A sealing groove (14) is provided on the side where the plate body (1) abuts against the door frame (2); the sealing groove (14) is located in the middle of the plate body (1); a plurality of sealing springs (13) are provided in the sealing groove (14); one end of the sealing spring (13) is embedded in the plate body (1); the end of the sealing spring (13) away from the plate body (1) extends toward the door frame (2); the end of the sealing spring (13) away from the plate body (1) abuts against a first sealing strip (12); one side of the first sealing strip (12) is located in the sealing groove (14). The first sealing strip (12) is slidably connected to the plate body (1); a second sealing strip (21) is fixedly connected to the side of the door frame (2) facing the plate body (1); the first sealing strip (12) abuts against the second sealing strip (21); a sealing spring (13) applies a force to the first sealing strip (12) to move the first sealing strip (12); and a first inclined surface (121) is provided on the side where the first sealing strip (12) abuts against the second sealing strip (21) to facilitate the abutment between the first sealing strip (12) and the second sealing strip (21).

2. The baffle with a sealing device according to claim 1, characterized in that, A second inclined surface (211) is provided on the side of the second sealing strip (21) abutting against the first sealing strip (12), and the first inclined surface (121) abuts against the second inclined surface (211).

3. The baffle plate with a sealing device according to claim 1, characterized in that, A first sealing plate (15) is provided at the edge of the plate body (1), the first sealing plate (15) extending toward the door frame (2), the first sealing plate (15) abutting against the inner wall of the door frame (2) and one side of the second sealing strip (21).

4. The baffle with a sealing device according to claim 3, characterized in that, A second sealing plate (22) is provided on the side of the second sealing strip (21) facing away from the first sealing plate (15); the second sealing plate (22) extends toward the center of the door frame (2); and the side of the second sealing plate (22) facing the first sealing plate (15) abuts against the side of the plate body (1) facing away from the first sealing plate (15).

5. A baffle with a sealing device according to claim 1, characterized in that, The first sealing strip (12) and the second sealing strip (21) are both made of graphite material.

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