A waste heat recovery device for an electric kiln for ceramic brick firing

Abstract

This invention relates to the field of heat recovery technology, and more particularly to a waste heat recovery device for an electric ceramic brick kiln. The technical problem is that existing heat recovery devices have relatively open recovery spaces, resulting in high heat loss and difficulty in effectively recovering residual heat from the ceramic bricks, leading to low heat recovery efficiency. The invention provides a waste heat recovery device for an electric ceramic brick kiln, comprising a conveyor platform on which the electric kiln is mounted. A heat recovery box is fixedly connected inside the kiln, and the heat recovery box has two openings. An air outlet pipe is fixedly connected to the top of the kiln, and an air inlet pipe is fixedly connected to the bottom. Air entering the heat recovery box comes into contact with the high-temperature ceramic bricks, and the air temperature rises through heat exchange. By conveying the fired ceramic bricks to the relatively sealed heat recovery box, and then exchanging heat through cold air, the residual heat of the fired ceramic bricks can be more fully recovered, reducing heat loss and thus improving heat recovery efficiency.

Description

Technical Field

[0001] This invention relates to the field of heat recovery technology, and in particular to a waste heat recovery device for an electric kiln for ceramic bricks. Background Technology

[0002] Ceramic tiles are plate- or block-shaped ceramic products made from clay and other inorganic non-metallic raw materials through processes such as molding and sintering. They are used to decorate and protect the walls and floors of buildings and structures. They are typically formed at room temperature through dry pressing, extrusion, or other molding methods, then dried and fired at a specific temperature. Currently, ceramic tiles are fired at relatively high temperatures, and to conserve resources, heat recovery treatment is often performed on the fired ceramic tiles. However, existing heat recovery devices operate in open spaces during the heat recovery process, resulting in significant heat loss and difficulty in effectively recovering residual heat from the ceramic tiles, leading to low heat recovery efficiency. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this invention is to provide a waste heat recovery device for electric kilns of ceramic bricks, which has a more sealed recovery space, can more fully recover the residual heat of ceramic bricks, reduce heat loss, and improve heat recovery efficiency.

[0004] The technical solution is as follows: A waste heat recovery device for an electric ceramic brick kiln includes a conveyor platform, on which the electric kiln is mounted. A heat recovery box is fixedly connected inside the electric kiln. The heat recovery box has two openings. An air outlet pipe is fixedly connected to the top of the electric kiln, and an air inlet pipe is fixedly connected to the bottom of the electric kiln. Both the air outlet pipe and the air inlet pipe are connected to the interior of the heat recovery box. The heat recovery box is equipped with a rotating component, a driving component, and a fixing component. The rotating component is used to drive the ceramic bricks to rotate. The driving component is used to assist the ceramic bricks in moving into or out of the rotating component. The fixing component is used to fix the ceramic bricks.

[0005] Furthermore, the rotating component includes a rotating shaft, which is rotatably connected to the heat recovery box. A servo motor is fixedly connected to the electric kiln, and the output shaft of the servo motor is fixedly connected to the rotating shaft. Several placement frames are uniformly fixedly connected to the rotating shaft, and several rollers are rotatably connected to the placement frames.

[0006] Furthermore, several of the placement frames are located inside the heat recovery box.

[0007] Furthermore, the driving component includes a gear frame, and two gear frames are slidably connected to the heat recovery box. The two gear frames are symmetrically arranged. Four electric push rods are fixedly connected inside the electric kiln. The two sides of the gear frame on the same side are respectively fixedly connected to the telescopic rods of the two electric push rods on the same side. Two sets of rotating columns are rotatably connected to each placement frame. There are two rotating columns in each set. The two sets of rotating columns on the same placement frame are symmetrically arranged. A conveyor belt is wound between the two rotating columns in each set. Two rotating rods are fixedly connected to one of the rotating columns in each set. Two overrunning clutches are fixedly connected to each rotating rod. A spur gear is fixedly connected to each overrunning clutch.

[0008] Furthermore, the conveyor belt is made of a high-temperature resistant material.

[0009] Furthermore, the fixing component includes a pressure plate, and two pressure plates are slidably connected to the placement frame. The two pressure plates are symmetrically arranged, and a pressure spring is connected between each pressure plate and the placement frame. Two arc-shaped extrusion rods are fixedly connected inside the heat recovery box, and the two arc-shaped extrusion rods are symmetrically arranged.

[0010] Furthermore, it also includes a sealing component, which is provided on the heat recovery box to enhance the sealing performance of the heat recovery box. The sealing component includes a sealing plate, and two sealing plates are slidably connected to the heat recovery box. Several return springs are connected between the two sealing plates and the heat recovery box. Two sleeve rods are fixedly connected to the placement frame, and pressure rods are slidably connected to the sleeve rods. A pressure spring is connected between the pressure rods and the sleeve rods. Four top blocks are fixedly connected to the heat recovery box.

[0011] Furthermore, it also includes a heat recovery auxiliary component. The heat recovery auxiliary component is provided on the placement frame. The heat recovery auxiliary component is used to improve the airflow inside the heat recovery box. The heat recovery auxiliary component includes a mounting frame. Two mounting frames are fixedly connected to the placement frame. The two mounting frames are symmetrically arranged. A set of rotating rods is rotatably connected between the two mounting frames. There are three rotating rods in each set. Two spur gears are fixedly connected to each rotating rod. A toothed belt is wound between the three spur gears located on the same side. Two spur gears are fixedly connected to one of the rotating rods in each set. Two arc-shaped toothed rods are fixedly connected to the heat recovery box. The two arc-shaped toothed rods are symmetrically arranged.

[0012] Furthermore, the spur gear three will mesh with the arc-shaped gear rod during the rotation of the rotating shaft.

[0013] Furthermore, it also includes positioning rods, with four positioning rods fixedly connected to each of the toothed frames.

[0014] The beneficial effects of this invention are as follows: 1. When air enters the heat recovery box, it comes into contact with the high-temperature ceramic bricks. Through heat exchange, the air will heat up. After the servo motor output shaft rotates a certain angle, it will stop rotating, so that two of the placement frames will be flush with the opening of the heat recovery box. After placing the ceramic bricks in the empty placement frames, the servo motor output shaft will rotate again. This process is repeated, and the heated air will rise to the top of the heat recovery box. The high-temperature air is then transported to the heat exchange device through the air outlet pipe, thereby recovering and utilizing the heat. By transporting the fired ceramic bricks to the relatively sealed heat recovery box and then exchanging heat with cold air, the residual heat of the fired ceramic bricks can be more fully recovered, reducing heat loss and thus improving heat recovery efficiency.

[0015] 2. When the placement frame is not aligned with the opening of the heat recovery box, the two sealing plates extend out of the heat recovery box and block the opening. As one of the placement frames rotates to align with the opening of the heat recovery box, it will drive two of the pressure rods to rotate. During this rotation, the two pressure rods will contact one of the sealing plates, squeezing it and causing it to extend into the heat recovery box. The heat recovery box opening will no longer be blocked. In this way, when the placement frame is not aligned with the opening of the heat recovery box, it can block the opening, thereby reducing air leakage inside the heat recovery box and further improving heat recovery efficiency.

[0016] 3. During the rotation of the placement frame, the spur gear on one of the placement frames meshes with the arc-shaped gear, causing the spur gear to rotate. Through transmission, this drives the rotating rod on one of the placement frames to rotate. During the rotation of the rotating rod, the air around the ceramic tile is agitated, allowing the air to better contact the ceramic tile and further improving the heat recovery efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the motor of the present invention.

[0019] Figure 3 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0020] Figure 4 This is a cross-sectional three-dimensional structural diagram of the inlet pipe, outlet pipe, and heat recovery box of the present invention.

[0021] Figure 5 This is a cross-sectional three-dimensional structural diagram of the heat recovery box of the present invention.

[0022] Figure 6This is a three-dimensional structural diagram of the rotating shaft and placement frame of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the conveyor belt, overrunning clutch, and spur gear of the present invention.

[0024] Figure 8 This is a cross-sectional three-dimensional structural diagram of the rotating shaft and top block of the present invention.

[0025] Figure 9 For the present invention Figure 8 A magnified three-dimensional structural diagram at point A in the middle.

[0026] Figure 10 This is a three-dimensional structural diagram of the mounting frame and rotating rod of the present invention.

[0027] Figure 11 This is a three-dimensional structural diagram of the sealing component of the present invention.

[0028] Figure 12 This is a cross-sectional three-dimensional structural diagram of the sleeve rod of the present invention.

[0029] Figure 13 This is a cross-sectional perspective view of the two spur gears, the toothed belt, and the three spur gears of the present invention.

[0030] Figure 14 This is a cross-sectional three-dimensional structural diagram of the arc-shaped toothed rod of the present invention.

[0031] Figure 15 For the present invention Figure 14 A magnified three-dimensional structural diagram at point B.

[0032] Figure 16 This is a cross-sectional three-dimensional structural diagram of the placement frame of the present invention.

[0033] Figure 17 This is a three-dimensional structural diagram of the disassembled fixing component of the present invention.

[0034] Figure 18 This is a partial cross-sectional three-dimensional structural schematic diagram of the positioning rod of the present invention.

[0035] Reference numerals: 1_Conveyor table, 2_Electric kiln, 3_Heat recovery box, 4_Outlet pipe, 5_Inlet pipe, 61_Rotating shaft, 62_Servo motor, 63_Placement frame, 64_Roller, 71_Gear frame, 72_Electric push rod, 73_Rotating column, 74_Conveyor belt, 75_Rotating rod, 76_Overrunning clutch, 77_Pulley gear one, 81_Sealing plate, 82_Reset spring, 83_Sleeve rod, 84_Pressure rod, 85_Pressure spring one, 86_Top block, 91_Mounting frame, 92_Rotating rod, 93_Pulley gear two, 94_Gear belt, 95_Pulley gear three, 96_Arc-shaped gear, 101_Pressure plate, 102_Pressure spring two, 103_Arc-shaped extrusion rod, 11_Positioning rod. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] Example 1: A waste heat recovery device for an electric kiln for ceramic brick firing, such as Figures 1-18 As shown, the device includes a conveyor platform 1, on which an electric kiln 2 is mounted. A heat recovery box 3 is fixedly connected inside the electric kiln 2. The heat recovery box 3 has two openings. An air outlet pipe 4 is fixedly connected to the top of the electric kiln 2, and an air inlet pipe 5 is fixedly connected to the bottom of the electric kiln 2. Both the air outlet pipe 4 and the air inlet pipe 5 are connected to the interior of the heat recovery box 3. The heat recovery box 3 is equipped with a rotating component, a driving component, and a fixing component. The rotating component is used to drive the ceramic bricks to rotate. The driving component is used to assist the ceramic bricks in moving into or out of the rotating component. The fixing component is used to fix the ceramic bricks.

[0038] The rotating component includes a rotating shaft 61, which is rotatably connected to the heat recovery box 3. A servo motor 62 is fixedly connected to the electric kiln 2. The output shaft of the servo motor 62 is fixedly connected to the rotating shaft 61. The servo motor 62 is used to drive the rotating shaft 61 to rotate. Several placement frames 63 are uniformly welded on the rotating shaft 61, and several rollers 64 are rotatably connected to the placement frames 63.

[0039] Several of the placement frames 63 are located inside the heat recovery box 3.

[0040] The driving component includes a gear frame 71. Two gear frames 71 are slidably connected to the heat recovery box 3. The two gear frames 71 are symmetrically arranged. Four electric push rods 72 are fixedly connected inside the electric kiln 2. The two sides of the gear frame 71 on the same side are respectively fixedly connected to the telescopic rods of the two electric push rods 72 on the same side. Two sets of rotating columns 73 are rotatably connected to each placement frame 63. There are two rotating columns 73 in each set. The two sets of rotating columns 73 on the same placement frame 63 are symmetrically arranged. A conveyor belt 74 is wound between the two rotating columns 73 in each set. Two rotating rods 75 are fixedly connected to one of the rotating columns 73 in each set. An overrunning clutch 76 is fixedly connected to each rotating rod 75. A spur gear 77 is fixedly connected to each overrunning clutch 76. The overrunning clutch 76 is used to control the spur gear 77 to rotate in one direction.

[0041] The conveyor belt 74 is made of high-temperature resistant material.

[0042] The fixing component includes a pressure plate 101. Two pressure plates 101 are slidably connected to the placement frame 63. The pressure plates 101 are used to squeeze the conveyor belt 74. The two pressure plates 101 are symmetrically arranged. A pressure spring 102 is connected between each pressure plate 101 and the placement frame 63. Two arc-shaped extrusion rods 103 are bolted to the heat recovery box 3. The two arc-shaped extrusion rods 103 are symmetrically arranged.

[0043] Initially, two of the placement frames 63 in the heat recovery box 3 are flush with the opening of the heat recovery box 3. Ceramic bricks are fed into the electric kiln 2 by the conveyor 1 for firing. After passing through the firing zone, the ceramic bricks enter the placement frames 63 through the opening on the heat recovery box 3. After the fired ceramic bricks extend into the placement frames 63, they will contact the conveyor belt 74. The user controls the extension rod of the electric push rod 72 to retract, which drives the toothed frame 71 to extend into the heat recovery box 3. The toothed frame 71 will mesh with the spur gear 77 on two of the placement frames 63. Under the action of the overrunning clutch 76, the spur gear 77 will rotate freely. After the toothed frame 71 disengages from the spur gear 77, the user controls the extension rod of the electric push rod 72 to extend, which drives the toothed frame 71 to move in the opposite direction. The toothed frame 71 moves in the opposite direction and engages with the spur gear 77 again. Gear 77 engages, causing spur gear 77 to rotate. The rotation of spur gear 77 drives the rotating rod 75 to rotate via the overrunning clutch 76. The rotation of the rotating rod 75 drives the rotating column 73 to rotate. This process repeats several times. The rotation of the rotating column 73 drives the conveyor belt 74 to move around, so that the conveyor belt 74 closer to the firing zone of the electric kiln 2 moves the ceramic bricks further into the placement frame 63, while the conveyor belt 74 further away from the firing zone of the electric kiln 2 moves the ceramic bricks out of the placement frame 63. After the ceramic bricks have been completely moved into or out of the placement frame 63, the electric push rod 72 retracts and stops operating. The retraction of the electric push rod 72 drives the gear frame 71 to reset. Subsequently, the user starts the servo motor 62. The output shaft of the servo motor 62 rotates, causing the rotating shaft 61 to rotate slowly. Rotation of shaft 61 causes the placement frame 63 to rotate. During rotation, the ceramic tiles inside the placement frame 63 are compressed by the arc-shaped extrusion rod 103, causing the two pressure plates 101 to move closer together. This compresses the two pressure springs 102. The movement of the two pressure plates 101 compresses the two conveyor belts 74 on the placement frame 63, thus pressing the ceramic tiles and securing them. Then, the user introduces air into the air inlet duct 5. The air enters the heat recovery box 3 and comes into contact with the high-temperature ceramic tiles. Through heat exchange, the air heats up. The output shaft of the servo motor 62 rotates a certain angle and then stops, causing two of the placement frames 63 to align with the opening of the heat recovery box 3. In the empty placement frame... After the ceramic bricks are placed in container 63, the output shaft of servo motor 62 rotates again, repeating this process. The heated air rises to the top of heat recovery box 3 and is then transported to the heat exchange device through air outlet duct 4, where the heat is recovered and utilized. After the ceramic bricks enter heat recovery box 3 and rotate 180 degrees, the pressure plate 101 and the arc-shaped extrusion rod 103 disengage. The pressure spring 102 resets, causing the pressure plate 101 to reset as well. The pressure plate 101 no longer presses against the conveyor belt 74, and the ceramic bricks are no longer fixed. The ceramic bricks are then moved out of heat recovery box 3 through another opening and transported to the conveyor table 1, which is far from the firing area of ​​electric kiln 2, and then out of electric kiln 2. By transporting the fired ceramic bricks to the relatively sealed heat recovery box 3, heat exchange is then carried out through cold air.This allows for more complete recovery of residual heat from the fired ceramic tiles, reducing heat loss and thus improving heat recovery efficiency.

[0044] Example 2: Based on Example 1, such as Figures 5-12 As shown, it also includes a sealing component. The heat recovery box 3 is equipped with the sealing component, which is used to enhance the sealing performance of the heat recovery box 3. The sealing component includes a sealing plate 81. Two sealing plates 81 are slidably connected to the heat recovery box 3. The sealing plates 81 are used to seal the opening of the heat recovery box 3. Several return springs 82 are connected between the two sealing plates 81 and the heat recovery box 3. Two sleeve rods 83 are bolted to the placement frame 63. A pressure rod 84 is slidably connected to the sleeve rod 83. A pressure spring 85 is connected between the pressure rod 84 and the sleeve rod 83. Four top blocks 86 are welded to the heat recovery box 3. The top blocks 86 are used to compress the pressure rod 84.

[0045] It also includes a heat recovery auxiliary component. The heat recovery auxiliary component is provided on the placement frame 63. The heat recovery auxiliary component is used to improve the air flow in the heat recovery box 3. The heat recovery auxiliary component includes a mounting frame 91. Two mounting frames 91 are bolted to the placement frame 63. The two mounting frames 91 are symmetrically arranged. A set of rotating rods 92 is rotatably connected between the two mounting frames 91. There are three rotating rods 92 in each set. The rotating rods 92 are used to stir the air around the ceramic tile. Two spur gears 93 are fixedly connected to each rotating rod 92. A toothed belt 94 is wound between the three spur gears 93 on the same side. Two spur gears 95 are fixedly connected to one of the rotating rods 92 in each set. Two arc-shaped toothed rods 96 are fixedly connected to the heat recovery box 3. The two arc-shaped toothed rods 96 are symmetrically arranged.

[0046] The spur gear 95 will mesh with the arc-shaped gear 96 as it rotates with the rotating shaft 61.

[0047] Initially, when the placement frame 63 is not aligned with the opening of the heat recovery box 3, the two sealing plates 81 extend out of the heat recovery box 3 and block the opening. As the two placement frames 63 rotate until they are aligned with the opening of the heat recovery box 3, the two placement frames 63 will drive the four pressure rods 84 to rotate. During the rotation of the four pressure rods 84, they will contact the two sealing plates 81 respectively, and the four pressure rods 84 will squeeze the two sealing plates 81 into the heat recovery box 3. The two placement frames 63 continue to rotate, driving the four pressure rods 84 to move. The four pressure rods 84 are squeezed by the four top blocks 86 respectively. The pressure causes the four pressure rods 84 to extend into the four sleeve rods 83 respectively, compressing the four pressure springs 85. After the four pressure rods 84 and the two sealing plates 81 separate, several return springs 82 reset and drive the two sealing plates 81 to reset. After the four pressure rods 84 continue to move and separate from the four top blocks 86, the four pressure springs 85 reset and drive the four pressure rods 84 to reset. This process is repeated, so that when the placement frame 63 is not flush with the opening of the heat recovery box 3, the opening of the heat recovery box 3 can be blocked, thereby reducing air leakage in the heat recovery box 3 and further improving the heat recovery efficiency.

[0048] After the fired ceramic bricks are placed in one of the placement frames 63, during the rotation of the placement frame 63, the spur gear 3 95 on the placement frame 63 will mesh with the arc-shaped toothed rod 96, causing the spur gear 3 95 to rotate. The rotation of the spur gear 3 95 drives the rotation of two spur gears 2 93 through one of the rotating rods 92, which in turn drives the rotation of two toothed belts 94. The rotation of the two toothed belts 94 will drive the rotation of the other four spur gears 2 93, which in turn drives the other two rotating rods 92. During the rotation of the three rotating rods 92, the air around the ceramic bricks will be agitated, allowing the air to contact the ceramic bricks better and further improving the heat recovery efficiency.

[0049] Example 3: Based on Example 2, such as Figures 3-18 As shown, it also includes positioning rods 11, with four positioning rods 11 welded onto each of the toothed frames 71. The positioning rods 11 are used to limit the placement frame 63.

[0050] During the process of the gear frame 71 extending into the heat recovery box 3, the gear frame 71 will drive the positioning rod 11 to extend into the heat recovery box 3 together. The positioning rod 11 will contact the placement frame 63 when it extends into the heat recovery box 3, thereby limiting two of the placement frames 63 and limiting all the placement frames 63, making the placement frames 63 hover more stably and improving the stability of the device. During the process of the gear frame 71 driving the spur gear 77 to rotate, the positioning rod 11 is always in contact with the placement frame 63. When the gear frame 71 resets, it drives the positioning rod 11 to reset. The reset positioning rod 11 and the placement frame 63 fall off, so that the placement frame 63 is no longer limited.

[0051] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A waste heat recovery device for an electric kiln for firing ceramic bricks, characterized in that, The device includes a conveyor platform (1), an electric kiln (2) on the conveyor platform (1), a heat recovery box (3) fixedly connected inside the electric kiln (2), the heat recovery box (3) having two openings, an air outlet pipe (4) fixedly connected to the top of the electric kiln (2), an air inlet pipe (5) fixedly connected to the bottom of the electric kiln (2), both the air outlet pipe (4) and the air inlet pipe (5) communicating with the inside of the heat recovery box (3), the heat recovery box (3) having a rotating component, a driving component and a fixing component, the rotating component being used to drive the ceramic bricks to rotate, the driving component being used to assist the ceramic bricks to move better into or out of the rotating component, and the fixing component being used to fix the ceramic bricks; The rotating component includes a rotating shaft (61), which is rotatably connected to the heat recovery box (3). A servo motor (62) is fixedly connected to the electric kiln (2). The output shaft of the servo motor (62) is fixedly connected to the rotating shaft (61). Several placement frames (63) are evenly fixedly connected to the rotating shaft (61), and several rollers (64) are rotatably connected to the placement frames (63). The driving component includes a gear frame (71). Two gear frames (71) are slidably connected to the heat recovery box (3). The two gear frames (71) are symmetrically arranged. Four electric push rods (72) are fixedly connected inside the electric kiln (2). The two sides of the gear frame (71) on the same side are respectively fixedly connected to the telescopic rods of the two electric push rods (72) on the same side. Two sets of rotating columns (73) are rotatably connected to each placement frame (63). There are two rotating columns (73) in each set. The two sets of rotating columns (73) on the same placement frame (63) are symmetrically arranged. A conveyor belt (74) is wound between the two rotating columns (73) in each set. Two rotating rods (75) are fixedly connected to one of the rotating columns (73) in each set. Two overrunning clutches (76) are fixedly connected to each rotating rod (75). A spur gear (77) is fixedly connected to each overrunning clutch (76). The fixing component includes a pressure plate (101), and two pressure plates (101) are slidably connected to the placement frame (63). The two pressure plates (101) are symmetrically arranged. A pressure spring (102) is connected between each pressure plate (101) and the placement frame (63). Two arc-shaped extrusion rods (103) are fixedly connected inside the heat recovery box (3). The two arc-shaped extrusion rods (103) are symmetrically arranged. It also includes a sealing component. The heat recovery box (3) is provided with the sealing component. The sealing component is used to enhance the sealing performance of the heat recovery box (3). The sealing component includes a sealing plate (81). Two sealing plates (81) are slidably connected to the heat recovery box (3). Several return springs (82) are connected between the two sealing plates (81) and the heat recovery box (3). Two sleeve rods (83) are fixedly connected to the placement frame (63). A pressure rod (84) is slidably connected to the sleeve rod (83). A pressure spring (85) is connected between the pressure rod (84) and the sleeve rod (83). Four top blocks (86) are fixedly connected to the heat recovery box (3).

2. The waste heat recovery device for an electric ceramic brick kiln according to claim 1, characterized in that, Several of the placement frames (63) are located inside the heat recovery box (3).

3. The waste heat recovery device for an electric kiln for ceramic brick firing according to claim 2, characterized in that, The conveyor belt (74) is made of high-temperature resistant material.

4. The waste heat recovery device for an electric kiln for ceramic brick firing according to claim 3, characterized in that, It also includes a heat recovery auxiliary component. The heat recovery auxiliary component is provided on the placement frame (63). The heat recovery auxiliary component is used to improve the air flow in the heat recovery box (3). The heat recovery auxiliary component includes a mounting frame (91). Two mounting frames (91) are fixedly connected to the placement frame (63). The two mounting frames (91) are symmetrically arranged. A set of rotating rods (92) is rotatably connected between the two mounting frames (91). There are three rotating rods (92) in each set. Two spur gears (93) are fixedly connected to each rotating rod (92). A toothed belt (94) is wound between the three spur gears (93) on the same side. Two spur gears (95) are fixedly connected to one of the rotating rods (92) in each set. Two arc-shaped toothed rods (96) are fixedly connected to the heat recovery box (3). The two arc-shaped toothed rods (96) are symmetrically arranged.

5. The waste heat recovery device for an electric ceramic brick kiln according to claim 4, characterized in that, The spur gear three (95) will mesh with the arc-shaped rack (96) as it rotates with the shaft (61).

6. The waste heat recovery device for an electric ceramic brick kiln according to claim 5, characterized in that, It also includes positioning rods (11), with four positioning rods (11) fixedly connected to each of the toothed frames (71).

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