Filtering device capable of guaranteeing stable baking temperature and uniform air volume

Abstract

The invention discloses a filtering device capable of guaranteeing stable baking temperature and uniform air volume, and belongs to the field of filtering devices.The filtering device comprises a baking oven body, a filtering box is assembled on the side face of the baking oven body, and an air inlet cover is arranged on the side face of the filtering box; a mounting frame is arranged in the filter box, two filter plates are assembled in the mounting frame, and an air outlet is formed in the side, close to the air inlet of the baking box body, of the filter box. The mounting frame, the filter plate and the linkage adjusting structure are arranged in the filter box, so that the mounting stability of the filter plate and the accurate adjustment of the air volume are improved; the linkage piece is driven by the connecting rod and guided by the sliding rail A, the rotating motion of the rotating rod is converted into angle adjustment of the air door, accurate control over the air inlet amount is achieved, stable air inlet of the baking oven body is guaranteed, a foundation is laid for stable baking temperature, meanwhile, the filter plate is arranged to filter inlet air, impurities entering the baking oven are reduced, and the service life of the baking oven is prolonged. And the cleanliness of the baking environment is improved.

Description

Technical Field

[0001] This invention belongs to the field of filtration devices, specifically relating to a filtration device that ensures stable baking temperature and uniform airflow. Background Technology

[0002] In the drying process of lithium battery electrodes, inert gases such as nitrogen are typically introduced into the baking oven to create an oxygen-free environment and remove solvents from the electrode coating, thus completing the drying and curing process. To ensure the cleanliness of the baking oven and the purity of the gas, existing technologies usually install a filter device on the air inlet pipe. The filter plate blocks aging impurities carried by the nitrogen, ensuring the quality of the gas entering the baking oven. However, in actual use, the filter plate gradually becomes clogged due to the adsorption of dust and impurities, leading to increased ventilation resistance and reduced airflow. This, in turn, causes fluctuations in airflow and uneven temperature distribution inside the baking oven, affecting the consistency of electrode drying. To solve the problem of filter plate clogging, existing technologies often require frequent disassembly, cleaning, or replacement of the filter plate, which not only increases downtime and labor maintenance costs but also makes it difficult to ensure the stability and sealing of the filter plate installation during cleaning.

[0003] The patent document, with publication number CN214862054U, discloses the following technical solution: a nitrogen filtration device for a silver paste baking oven, relating to the field of conductive materials technology. It includes a curing mechanism, a fixing mechanism, and a filtering mechanism. The curing mechanism includes the silver paste baking oven body; the fixing mechanism includes a fixing cylinder with a circular cross-section; and the filtering mechanism includes a fixing plate, a filter element, and multiple filter plates, with the filtering mechanism fixed inside the fixing mechanism.

[0004] The existing technology suffers from the following problems: The aforementioned device only filters impurities from nitrogen using a filter plate. This filter plate gradually becomes clogged during use, leading to increased ventilation resistance and reduced airflow. However, the device lacks an automatic airflow adjustment mechanism, making it impossible to adjust the airflow in real-time based on the degree of filter plate clogging. This results in unstable airflow into the baking oven, affecting the uniformity of the baking temperature. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a filtration device that ensures stable baking temperature and uniform airflow, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides a filtration device that ensures stable baking temperature and uniform airflow, including a baking oven body, a filter box mounted on the side of the baking oven body, and an air inlet hood provided on the side of the filter box. The filter box has an internal mounting frame, and two filter plates are assembled inside the mounting frame. The filter box has an air outlet on the side near the air inlet of the oven body. The filter box has fixed cylinders on both sides of its inner walls. A sliding rod is slidably connected inside the fixed cylinder. One end of the sliding rod is fixedly connected to the mounting frame. A connecting rod A is hinged to the outer wall of the inner end of the sliding rod in the fixed cylinder. A slider is hinged to the other end of the connecting rod A. A toothed plate A is fixedly connected to the outer wall of the slider. A rotating rod rotatably passes through the top of the filter box. A gear A is fixedly sleeved on the outer wall of the rotating rod. The gear A meshes with the toothed plate A. An installation shaft is rotatably connected to the inner wall of the filter box. A damper is fixedly connected to the outer wall of the installation shaft. A spring is fixedly connected to the inner wall of the fixed cylinder. The other end of the spring is fixedly connected to the sliding rod. A linkage for rotating the installation shaft is assembled on the side of the rotating rod outside the filter box.

[0007] Preferably, the linkage includes a connecting rod B, which is fixedly connected to the outer wall of the rotating rod. The other end of the connecting rod B is hinged to a connecting rod C, and the other end of the connecting rod C is hinged to a rectangular frame. A linkage rod is fixedly connected to the outer wall of the mounting shaft, and a sliding shaft A is fixedly connected to the other end of the linkage rod. The lower side of the sliding shaft A is slidably connected inside the rectangular frame.

[0008] Preferably, the linkage further includes a slide rail A, which is fixedly connected to the upper end of the filter box, and the rectangular frame is slidably connected to the outside of the slide rail A.

[0009] Preferably, the inner wall of the filter box is fixedly connected to a slide rail B, and the slider is slidably connected to the outside of the slide rail B.

[0010] Preferably, a vibration assembly is installed on the inner side of the filter plate. The vibration assembly includes a cylindrical cylinder, which is rotatably connected to the inner side of the filter plate away from the oven body and rotates through the filter plate on the other side. A moving rod is fixedly connected to the bottom of the slide rail B. A spiral groove is formed on the outer wall of the moving rod. A circular block is fixedly connected to the inner wall of the cylindrical cylinder. Two elastic telescopic rods are fixedly connected to the outer wall of the cylindrical cylinder. A rubber ball head is installed at the end of the elastic telescopic rod away from the cylindrical cylinder. Two triangular blocks are fixedly connected to the inner sides of the two filter plates.

[0011] Preferably, the two triangular blocks are located on the rotation path of the elastic telescopic rod, and one corner of the two triangular blocks is inclined towards the cylindrical tube.

[0012] Preferably, the end of the moving rod away from the slide rail B is slidably connected to the inside of the cylindrical tube, and the circular block is slidably connected to the inside of the spiral groove.

[0013] Preferably, the filter box is provided with an oscillating assembly inside and at the bottom. The oscillating assembly includes a rotating shaft, which is rotatably connected to the inner wall of the filter box. A blade is fixedly connected to the outer wall of the rotating shaft. The bottom of the rotating shaft rotatably passes through the filter box and is fixedly connected to a rotating plate. A sliding shaft B is fixedly connected to one end of the rotating plate. A movable plate is provided at the bottom of the filter box. A sliding groove is opened in the middle of the movable plate. A toothed plate B is fixedly connected to one end of the movable plate. A movable shaft is rotatably connected to the inner wall of the air outlet. An oscillating plate is fixedly connected to the outer wall of the movable shaft. A gear B is rotatably connected to the bottom of the movable shaft, which rotatably passes through the filter box and is fixedly connected to the gear B. The gear B meshes with the toothed plate B.

[0014] Preferably, a limiting groove is provided at the bottom of the filter box, and a connecting block is slidably connected inside the limiting groove, with the bottom of the connecting block being fixedly connected to the movable plate.

[0015] The advantages of this application are: (1) This application improves the stability of filter plate installation and the precise adjustment of air volume by setting an installation frame, filter plate and linkage adjustment structure in the filter box; the linkage component converts the rotation of the rotating rod into the angle adjustment of the air door through the linkage transmission and the guide rail A, so as to achieve precise control of the air intake volume, thereby ensuring the stability of the air intake of the oven body and laying the foundation for the stability of the baking temperature. At the same time, the filter plate can filter the air intake, reduce impurities entering the oven and improve the cleanliness of the baking environment.

[0016] (2) This application effectively solves the problem of easy clogging of the filter plate by adding a vibration component, extends the service life of the filter plate and maintains the filtration efficiency. Through the cooperation of the circular block and the spiral groove, the linear movement of the mounting frame is converted into the rotational movement of the cylindrical cylinder, which drives the elastic telescopic rod to rotate synchronously. The rubber ball head collides with the inclined triangular block, causing the elastic telescopic rod to generate periodic extension and rebound, forming vibration and transmitting it to the filter plate, so that the attached dust and aged impurities loosen and fall off, and slow down the clogging speed. Whether the mounting frame moves forward or reverses to reset, it can achieve continuous dust removal, ensuring that the filter plate maintains a good filtration effect throughout the air volume adjustment process, without the need for frequent disassembly and cleaning, thus improving the ease of use of the equipment.

[0017] (3) This application further optimizes the uniformity of air intake and improves the consistency of electrode baking quality through the design of the swing assembly. The power of nitrogen flow drives the blade to rotate. Through the cooperation of the rotating plate, sliding shaft and sliding groove, the circular motion is converted into the reciprocating linear motion of the movable plate. The cooperation of the limiting groove and the connecting block ensures the stable movement of the movable plate. The meshing transmission of tooth plate B and gear B drives the movable shaft and swing plate to swing back and forth, so that the filtered nitrogen is evenly sent into the baking oven in the swing mode, avoiding the concentrated impact of airflow on a certain area and ensuring the uniform temperature distribution in the baking cavity. At the same time, the turbulence effect of the swing plate can promote airflow mixing, making the temperature and flow rate of nitrogen entering the baking oven more stable, further ensuring the stability of the baking temperature and improving the overall quality of electrode baking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a partial cross-sectional view of the present invention. Figure 1 ; Figure 4 This is the invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is the invention Figure 2 Enlarged structural diagram at point B; Figure 6 This is a partial cross-sectional view of the present invention. Figure 2 ; Figure 7 This is the invention Figure 6 Enlarged structural diagram at point C; Figure 8 This is a partial three-dimensional structural schematic diagram of the present invention.

[0019] Explanation of key figure labels: 1. Baking oven body; 2. Filter box; 21. Mounting frame; 22. Filter plate; 23. Air outlet; 3. Air inlet hood; 41. Fixing cylinder; 42. Slide rod; 43. Connecting rod A; 44. Slider; 45. Gear plate A; 46. Rotating rod; 47. Gear A; 48. Connecting rod B; 49. Connecting rod C; 410. Rectangular frame; 411. Mounting shaft; 412. Air damper; 413. Linkage rod; 414. Slide shaft A; 415. Slide rail A; 416. Spring; 41 7. Slide rail B; 5. Vibration assembly; 51. Circular cylinder; 52. Moving rod; 53. Spiral groove; 54. Circular block; 55. Elastic telescopic rod; 56. Rubber ball head; 57. Triangular block; 6. Swing assembly; 61. Rotating shaft; 62. Blade; 63. Slide shaft B; 64. Movable plate; 65. Slide groove; 66. Toothed plate B; 67. Movable shaft; 68. Swing plate; 69. Gear B; 610. Rotating plate; 611. Limiting groove; 612. Connecting block. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0021] Example 1, as Figures 1-6 As shown, a filtration device for ensuring stable baking temperature and uniform airflow includes a baking oven body 1, a filter box 2 is mounted on the side of the baking oven body 1, and an air inlet hood 3 is provided on the side of the filter box 2. The filter box 2 has an installation frame 21 inside, and two filter plates 22 are installed inside the installation frame 21. The filter box 2 has an air outlet 23 on the side near the air inlet of the oven body 1. A fixed cylinder 41 is fixedly connected to the inner walls of both sides of the filter box 2. A slide rod 42 is slidably connected inside the fixed cylinder 41. One end of the slide rod 42 is fixedly connected to the mounting frame 21. A connecting rod A43 is hinged to the outer wall of the end of the slide rod 42 located inside the fixed cylinder 41. A slider 44 is hinged to the other end of the connecting rod A43. A toothed plate A45 is fixedly connected to the outer wall of the slider 44. A rotating rod 46 is rotatably connected to the top of the filter box 2. A gear A47 is fixedly sleeved on the outer wall of the rotating rod 46. The gear A47 meshes with the toothed plate A45. An installation shaft 411 is rotatably connected to the inner wall of the filter box 2. A damper 412 is fixedly connected to the outer wall of the installation shaft 411. A spring 416 is fixedly connected to the inner wall of the fixed cylinder 41. The other end of the spring 416 is fixedly connected to the slide rod 42. A linkage component for rotating the installation shaft 411 is assembled on the side of the rotating rod 46 located outside the filter box 2.

[0022] The linkage includes a connecting rod B48, which is fixedly connected to the outer wall of the rotating rod 46. The other end of the connecting rod B48 is hinged to a connecting rod C49, and the other end of the connecting rod C49 is hinged to a rectangular frame 410. The outer wall of the mounting shaft 411 is fixedly connected to a linkage rod 413, and the other end of the linkage rod 413 is fixedly connected to a sliding shaft A414. The lower side of the sliding shaft A414 is slidably connected inside the rectangular frame 410.

[0023] The linkage also includes a slide rail A415, which is fixedly connected to the upper end of the filter box 2. The rectangular frame 410 is slidably connected to the outside of the slide rail A415. The slide rail A415 serves as a sliding guide for the rectangular frame 410, ensuring that the rectangular frame 410 makes a stable reciprocating linear motion in the horizontal direction. This ensures the trajectory accuracy of the sliding shaft A414 when it slides inside the rectangular frame 410, thereby enabling the linkage rod 413 to drive the mounting shaft 411 to achieve precise adjustment of the angle of the damper 412.

[0024] The inner wall of the filter box 2 is fixedly connected to the slide rail B417, and the slider 44 is slidably connected to the outside of the slide rail B417. The slide rail B417 provides vertical guidance and constraint for the slider 44, so that the slider 44 maintains stable lifting and lowering motion during the meshing transmission of the toothed plate A45 and the gear A47, avoiding the slider 44 from deviating or jamming, and ensuring the force transmission efficiency between the connecting rod A43 and the slide rod 42.

[0025] In practical use, nitrogen first enters the air inlet hood 3 and then the filter box 2. After being filtered by the filter plate 22 inside the filter box 2, it enters the oven body 1 through the air outlet 23 and the air inlet of the oven body 1. When the filter plate 22 is unobstructed, the slide rod 42 and the spring 416 can fix the filter plate 22 in its original position. When the filter plate 22 is blocked and the filtration effect decreases, the resistance on the filter plate 22 increases. Then the mounting frame 21 will move closer to the oven body 1, causing the slide rod 42 to slide inside the fixed cylinder 41 and compress the spring 416. The movement of the slide rod 42 pushes the slider 44 to slide vertically towards the center along the slide rail B417 through the connecting rod A43. The slider 44 drives the toothed plate A45 to move synchronously. The toothed plate A45 meshes with the gear A47, driving the gear A47 and the rotating rod 46 to rotate. The rotation of the rotating rod 46 causes the connecting rod B48 to swing. The connecting rod B48 pulls the rectangular frame 410 along the slide rail A415 away from the rotating rod 46 through the connecting rod C49. The sliding of the rectangular frame 410 causes the sliding shaft A414 to slide inside it, which in turn drives the linkage rod 413 to rotate counterclockwise around the mounting shaft 411. The mounting shaft 411 rotates accordingly, and the angle of the damper 412 increases, thereby increasing the cross-sectional area of ​​the air inlet channel, compensating for the decrease in air volume caused by the blockage of the filter plate, and maintaining the stability of the airflow entering the oven body 1.

[0026] Example 2, as Figures 4-7 As shown, a vibration assembly 5 is installed on the inner side of the filter plate 22. The vibration assembly 5 includes a cylindrical cylinder 51. The cylindrical cylinder 51 is rotatably connected to the inner side of the filter plate 22 away from the oven body 1 and rotatably passes through the filter plate 22 on the other side. A moving rod 52 is fixedly connected to the bottom of the slide rail B417. A spiral groove 53 is opened on the outer wall of the moving rod 52. A circular block 54 is fixedly connected to the inner wall of the cylindrical cylinder 51. Two elastic telescopic rods 55 are fixedly connected to the outer wall of the cylindrical cylinder 51. A rubber ball head 56 is installed at the end of the elastic telescopic rod 55 away from the cylindrical cylinder 51. Two triangular blocks 57 are fixedly connected to the inner sides of the two filter plates 22.

[0027] Two triangular blocks 57 are located on the rotation path of the elastic telescopic rod 55, and one corner of the two triangular blocks 57 is inclined towards the cylindrical cylinder 51. This inclined angle design allows the rubber ball head 56 to be gradually compressed and quickly released along the inclined surface of the triangular block 57 during the rotation of the elastic telescopic rod 55, generating periodic vibration impact.

[0028] The end of the moving rod 52 away from the slide rail B417 is slidably connected to the inside of the cylindrical cylinder 51, and the circular block 54 is slidably connected to the inside of the spiral groove 53. Under the constraint of the spiral groove 53, the circular block 54 converts the linear motion into the rotational motion of the cylindrical cylinder 51, thereby driving the elastic telescopic rod 55 to make circular motion around the axis of the cylindrical cylinder 51.

[0029] When the above-mentioned equipment is used, when the mounting frame 21 moves toward the baking oven body 1, the filter plate 22 inside it will move at the same time, and the circular cylinder 51 rotatably connected inside it will also move. When the circular cylinder 51 moves, it drives the circular block 54 inside it to slide in the spiral groove 53. Since the spiral groove 53 is opened on the outer wall of the moving rod 52, and the moving rod 52 is fixed to the filter box 2 through the slide rail B417, the sliding of the circular block 54 in the spiral groove 53 will force the circular cylinder 51 to rotate. When the cylindrical tube 51 rotates, it drives the two elastic telescopic rods 55 on its outer wall to rotate synchronously. During the rotation, the rubber ball head 56 at the end of the elastic telescopic rod 55 contacts and is squeezed against the inclined surface of the two triangular blocks 57 in turn. After the elastic telescopic rod 55 is compressed and contracted, it rebounds quickly, generating periodic knocking vibration. This vibration is transmitted to the filter plate 22, causing the dust and aging impurities attached to the surface of the filter plate 22 to loosen and fall off, thereby slowing down the clogging speed of the filter plate 22 and extending its effective filtration time. When the mounting frame 21 moves in the reverse direction to reset, the cylindrical cylinder 51 rotates in the reverse direction, and the elastic telescopic rod 55 will also collide and vibrate with the triangular block 57, ensuring that the filter plate 22 can obtain an effective dust removal effect throughout the entire process of airflow adjustment.

[0030] Example 3, as Figures 6-8As shown, the filter box 2 is equipped with a swing assembly 6 inside and at the bottom. The swing assembly 6 includes a rotating shaft 61, which is rotatably connected to the inner wall of the filter box 2. A blade 62 is fixedly connected to the outer wall of the rotating shaft 61. The bottom of the rotating shaft 61 rotatably passes through the filter box 2 and is fixedly connected to a rotating plate 610. A sliding shaft B63 is fixedly connected to one end of the rotating plate 610. A movable plate 64 is provided at the bottom of the filter box 2. A sliding groove 65 is opened in the middle of the movable plate 64. A toothed plate B66 is fixedly connected to one end of the movable plate 64. A movable shaft 67 is rotatably connected to the inner wall of the air outlet 23. A swing plate 68 is fixedly connected to the outer wall of the movable shaft 67. The bottom of the movable shaft 67 rotatably passes through the filter box 2 and is fixedly connected to a gear B69. The gear B69 meshes with the toothed plate B66.

[0031] The bottom of the filter box 2 is provided with a limiting groove 611. A connecting block 612 is slidably connected inside the limiting groove 611. The bottom of the connecting block 612 is fixedly connected to the movable plate 64. The cooperation between the limiting groove 611 and the connecting block 612 provides horizontal guidance and limitation for the movable plate 64, so that the movable plate 64 moves back and forth in a straight line under the drive of the sliding shaft B63.

[0032] When the above equipment is used, when nitrogen enters the filter box 2, the flow of nitrogen pushes the blade 62 to rotate around the rotating shaft 61. When the rotating shaft 61 rotates, it drives the rotating plate 610 at its bottom to rotate synchronously. During the rotation, the sliding shaft B63 at the end of the rotating plate 610 slides and engages with the sliding groove 65 in the middle of the movable plate 64. Since the movable plate 64 is restricted to moving only in the horizontal direction through the sliding connection between the connecting block 612 and the limiting groove 611, the circular motion of the sliding shaft B63 is converted into the reciprocating linear motion of the movable plate 64. When the movable plate 64 moves, it drives the toothed plate B66 to move back and forth synchronously. The meshing transmission between the toothed plate B66 and the gear B69 causes the movable shaft 67 to rotate back and forth. The movable shaft 67 drives the swing plate 68 to swing back and forth inside the air outlet 23, thereby evenly dispersing the filtered nitrogen into the air inlet of the baking oven body 1 in a swinging manner. This avoids the airflow from concentrating and impacting a certain area inside the baking oven, ensuring uniform temperature distribution in the baking cavity and improving the consistency of electrode baking quality. At the same time, the periodic swing of the swing plate 68 can also play a turbulence role, further promoting the uniform mixing of airflow and making the temperature and flow rate of the nitrogen entering the baking oven body 1 more stable.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A filtration device for ensuring stable baking temperature and uniform airflow, comprising a baking oven body, characterized in that, A filter box is mounted on the side of the oven body, and an air inlet hood is provided on the side of the filter box. The filter box has an internal mounting frame, and two filter plates are assembled inside the mounting frame. The filter box has an air outlet on the side near the air inlet of the oven body. The filter box has fixed cylinders on both sides of its inner walls. A sliding rod is slidably connected inside the fixed cylinder. One end of the sliding rod is fixedly connected to the mounting frame. A connecting rod A is hinged to the outer wall of the inner end of the sliding rod in the fixed cylinder. A slider is hinged to the other end of the connecting rod A. A toothed plate A is fixedly connected to the outer wall of the slider. A rotating rod rotatably passes through the top of the filter box. A gear A is fixedly sleeved on the outer wall of the rotating rod. The gear A meshes with the toothed plate A. An installation shaft is rotatably connected to the inner wall of the filter box. A damper is fixedly connected to the outer wall of the installation shaft. A spring is fixedly connected to the inner wall of the fixed cylinder. The other end of the spring is fixedly connected to the sliding rod. A linkage for rotating the installation shaft is assembled on the side of the rotating rod outside the filter box.

2. The filtration device for ensuring stable baking temperature and uniform airflow according to claim 1, characterized in that, The linkage includes a connecting rod B, which is fixedly connected to the outer wall of the rotating rod. The other end of the connecting rod B is hinged to a connecting rod C, and the other end of the connecting rod C is hinged to a rectangular frame. The outer wall of the mounting shaft is fixedly connected to a linkage rod, and the other end of the linkage rod is fixedly connected to a sliding shaft A. The lower side of the sliding shaft A is slidably connected inside the rectangular frame.

3. The filtration device for ensuring stable baking temperature and uniform airflow according to claim 2, characterized in that, The linkage also includes a slide rail A, which is fixedly connected to the upper end of the filter box, and the rectangular frame is slidably connected to the outside of the slide rail A.

4. The filtration device for ensuring stable baking temperature and uniform airflow according to claim 1, characterized in that, The inner wall of the filter box is fixedly connected to a slide rail B, and the slider is slidably connected to the outside of the slide rail B.

5. The filtration device for ensuring stable baking temperature and uniform airflow according to claim 4, characterized in that, A vibration assembly is mounted on the inner side of the filter plate. The vibration assembly includes a cylindrical cylinder, which is rotatably connected to the inner side of the filter plate away from the oven body and rotates through the filter plate on the other side. A moving rod is fixedly connected to the bottom of the slide rail B. A spiral groove is formed on the outer wall of the moving rod. A circular block is fixedly connected to the inner wall of the cylindrical cylinder. Two elastic telescopic rods are fixedly connected to the outer wall of the cylindrical cylinder. A rubber ball head is mounted on the end of the elastic telescopic rod away from the cylindrical cylinder. Two triangular blocks are fixedly connected to the inner sides of the two filter plates.

6. The filtration device for ensuring stable baking temperature and uniform airflow according to claim 5, characterized in that, The two triangular blocks are located on the rotation path of the elastic telescopic rod, and one corner of each triangular block is inclined toward the cylindrical tube.

7. A filtration device for ensuring stable baking temperature and uniform airflow according to claim 6, characterized in that, The end of the moving rod away from the slide rail B is slidably connected to the inside of the cylindrical tube, and the circular block is slidably connected to the inside of the spiral groove.

8. The filtration device for ensuring stable baking temperature and uniform airflow according to claim 1, characterized in that, The filter box is equipped with a swing assembly inside and at its bottom. The swing assembly includes a rotating shaft, which is rotatably connected to the inner wall of the filter box. A blade is fixedly connected to the outer wall of the rotating shaft. The bottom of the rotating shaft rotatably passes through the filter box and is fixedly connected to a rotating plate. A sliding shaft B is fixedly connected to one end of the rotating plate. A movable plate is provided at the bottom of the filter box. A sliding groove is opened in the middle of the movable plate. A toothed plate B is fixedly connected to one end of the movable plate. A movable shaft is rotatably connected to the inner wall of the air outlet. A swing plate is fixedly connected to the outer wall of the movable shaft. A gear B is rotatably connected to the bottom of the movable shaft, which rotatably passes through the filter box and is fixedly connected to the gear B. The gear B meshes with the toothed plate B.

9. A filtration device for ensuring stable baking temperature and uniform airflow according to claim 8, characterized in that, The bottom of the filter box has a limiting groove, and a connecting block is slidably connected inside the limiting groove. The bottom of the connecting block is fixedly connected to the movable plate.

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