Self-cleaning type kiln tail gas waste heat utilization equipment

Abstract

The invention relates to the technical field of waste heat utilization devices, in particular to self-cleaning type kiln tail gas waste heat utilization equipment. Comprising a waste heat boiler, a guide rail I, sliding plates I, U-shaped pipes and the like, the guide rail I is installed in the waste heat boiler, the sliding plates I are slidably arranged on the guide rail I at intervals, and the U-shaped pipes are evenly connected to the sliding plates I at intervals. Through cooperation of the sliding plate I, the sliding plate II and the moving mechanism, the distance between the water pipes can be adjusted so that the distance between the water pipes can be increased, through the increase of the distance between the water pipes, maintenance personnel can conveniently maintain the water pipes, and through cooperation of the nozzle I, the material conveying mechanism and the translation mechanism, the material conveying efficiency is improved. And the nozzle I can be gradually moved between the water pipes, and then the nozzle I is used for spraying dry ice particles to the outer walls of the water pipes, so that smoke dust adhered to the outer walls of the water pipes is cleaned, the outer walls of the water pipes are automatically cleaned, and the heat conversion rate of the tail gas of the kiln is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat utilization devices, and particularly to a self-cleaning waste heat utilization device for kiln tail gas. Background Art

[0002] With the intensification of the global energy crisis and the improvement of environmental protection awareness, the efficient and clean utilization of waste heat resources in industrial production processes has become one of the important directions for the development of contemporary industrial technologies. As an indispensable high-temperature heat treatment device in many industries, the large amount of high-temperature tail gas generated during the production process of kilns contains rich thermal energy. In the past, this part of the energy was often directly discharged into the atmosphere, resulting in huge energy waste and environmental pollution. However, nowadays, in order to utilize this part of the energy, a waste heat boiler is usually installed at the position where the kiln discharges the tail gas. The waste heat boiler can use the waste heat of the tail gas to heat domestic water or boiler make-up water, thereby reducing heat loss and improving the heat recovery efficiency.

[0003] However, when the existing waste heat boiler is in use, after long-term use, a large amount of soot is likely to adhere to the outer wall of the water pipes inside it. After the soot adheres to the outer wall of the water pipes, it is likely to affect the heating of the water inside the pipes by the kiln tail gas, resulting in ineffective utilization of the heat of the kiln tail gas. Moreover, when the water pipes inside the waste heat boiler are damaged, due to the small spacing left between the water pipes, it causes trouble for subsequent maintenance workers to repair the damaged water pipes and is not easy to repair. Summary of the Invention

[0004] In view of this, the present invention provides a self-cleaning waste heat utilization device for kiln tail gas, which can solve the problems that when the existing waste heat boiler is in use, the water pipes inside it are likely to adhere to soot after long-term use, resulting in ineffective utilization of the heat of the kiln tail gas, and due to the small spacing left between the water pipes, it causes trouble for subsequent maintenance of the water pipes.

[0005] Technical solution: A self-cleaning waste heat utilization device for kiln tail gas, including a waste heat boiler and a rotary door, further including a guide rail I, a sliding plate I, a U-shaped pipe, a guide rail II, a sliding plate II, a water pipe, a hose I, a slider, a guide rod, a movable block, a connecting pipe, a nozzle I, a moving mechanism, a feeding mechanism and a translation mechanism. The guide rail I is installed inside the waste heat boiler. The sliding plate I is slidably arranged on the guide rail I at intervals. The U-shaped pipes are evenly and spacedly connected to the sliding plate I. The guide rail II is symmetrically arranged inside the waste heat boiler. The sliding plate II is slidably arranged between the guide rail II at intervals. A water pipe is installed between the sliding plate I and the sliding plate II. The bottom end of the water pipe is communicated with the U-shaped pipe. The two ends of the hose I are respectively communicated with the inside of the waste heat boiler and the top end of the water pipe. The sliders are symmetrically arranged up and down inside the waste heat boiler. A guide rod is connected between the sliders. The movable block is slidably arranged on the guide rod. The connecting pipe is installed on the movable block. The nozzles I are spacedly communicated with the connecting pipe. The nozzles I are used to spray dry ice particles onto the outer wall of the water pipe. The moving mechanism is used to drive the sliding plate I and the sliding plate II to move. The feeding mechanism is used to feed dry ice particles into the connecting pipe. The translation mechanism is used to drive the movable block to move.

[0006] In one embodiment, the moving mechanism includes a connecting plate and an electric push rod I. The connecting plate is installed on the guide rail I and the guide rail II. The electric push rods I are installed on the connecting plate at intervals. The telescopic rods of the electric push rods I are respectively connected to the sliding plate I and the sliding plate II.

[0007] In one embodiment, the feeding mechanism includes a dry ice spraying device and a hose II. The dry ice spraying device is installed inside the waste heat boiler. The two ends of the hose II are respectively communicated with the dry ice spraying device and the connecting pipe.

[0008] In one embodiment, the translation mechanism includes a fixing plate and an electric push rod II. The fixing plate is arranged on the side wall of the waste heat boiler. The electric push rod II is installed on the fixing plate. The telescopic rod of the electric push rod II is connected to the slider.

[0009] In one embodiment, the translation mechanism further includes an electric push rod III. The electric push rod III is installed on one of the sliders. The telescopic rod of the electric push rod III is connected to the movable block.

[0010] In one embodiment, a swinging mechanism is further included, including a universal pipe and a nozzle II. The universal pipes are spacedly communicated with the connecting pipe. The nozzle II is installed on the universal pipe.

[0011] In one embodiment, the swinging mechanism further includes a connecting block, a rotating rod and a driving member. The connecting blocks are spacedly arranged on the connecting pipe. The rotating rod is rotatably arranged on the connecting block. One end of the rotating rod is connected to the nozzle II. The driving member is used to drive the rotating rod to rotate.

[0012] In one embodiment, the driving member includes a guide rail III, a push-pull block, and an electric push rod IV. The guide rail III is installed on the connecting pipe. The push-pull block is slidably arranged on the guide rail III. The push-pull block is movably connected to the other end of the rotating rod. The electric push rod IV is installed on the connecting pipe, and the telescopic rod of the electric push rod IV is connected to the push-pull block.

[0013] The present invention has the following advantages: 1. Through the cooperation of the sliding plate I, the sliding plate II, and the moving mechanism, the present invention can adjust the distance between the water pipes, so as to increase the distance between the water pipes. By increasing the distance between the water pipes, it is not only convenient for the maintenance personnel to repair the water pipes, but also through the cooperation of the nozzle I, the feeding mechanism, and the translation mechanism, the nozzle I can be gradually moved into the space between the water pipes, and then the nozzle I is used to spray dry ice particles on the outer wall of the water pipe, thereby cleaning the soot adhered to the outer wall of the water pipe, and further realizing the automatic cleaning of the outer wall of the water pipe, so as to improve the heat conversion rate of the kiln tail gas.

[0014] 2. By setting the swinging mechanism, the present invention can use the nozzle I and the nozzle II to spray dry ice particles together, thereby improving the cleaning efficiency. Then, by driving the nozzle II to swing back and forth, when the nozzle II sprays dry ice particles, the spraying range of the nozzle II can be increased, and further the cleaning range of the nozzle II on the outer wall of the water pipe can be expanded, so as to further improve the cleaning efficiency. Brief Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 is a cross-sectional view of the waste heat boiler of the present invention.

[0017] Figure 3 is a three-dimensional structural schematic diagram of the U-shaped pipe, the water pipe, and the hose I of the present invention.

[0018] Figure 4 is a three-dimensional structural schematic diagram of the guide rail I, the connecting plate, and the electric push rod I of the present invention.

[0019] Figure 5 is a three-dimensional structural schematic diagram of the sliding plate I, the U-shaped pipe, and the electric push rod I of the present invention.

[0020] Figure 6 is a three-dimensional structural schematic diagram of the guide rail II, the connecting plate, and the electric push rod I of the present invention.

[0021] Figure 7 is a three-dimensional structural schematic diagram of the sliding plate II and the electric push rod I of the present invention.

[0022] Figure 8 is a three-dimensional structural schematic diagram of the feeding mechanism and the translation mechanism of the present invention.

[0023] Figure 9 For the present invention Figure 8 Enlarged view of part A in the present invention.

[0024] Figure 10 Schematic three-dimensional structure diagram of the slider, guide rod and electric push rod III of the present invention.

[0025] Figure 11 Schematic three-dimensional structure diagram of nozzle I, universal pipe and nozzle II of the present invention.

[0026] Figure 12 Schematic three-dimensional structure diagram of the movable block, connecting pipe and push-pull block of the present invention.

[0027] Figure 13 For the present invention Figure 12 Enlarged view of part B in the present invention.

[0028] In the attached drawing reference numerals: 1, waste heat boiler; 101, rotary door; 2, guide rail I; 3, sliding plate I; 4, U-shaped pipe; 5, guide rail II; 6, sliding plate II; 7, water pipe; 8, hose I; 9, slider; 10, guide rod; 11, movable block; 12, connecting pipe; 13, nozzle I; 14, connecting plate; 15, electric push rod I; 16, dry ice spraying device; 17, hose II; 18, fixing plate; 19, electric push rod II; 20, electric push rod III; 21, universal pipe; 22, nozzle II; 23, connecting block; 24, rotating rod; 25, guide rail III; 26, push-pull block; 27, electric push rod IV. Detailed implementation manners

[0029] The present invention will be further described below in conjunction with the embodiments shown in the attached drawings.

[0030] Embodiment: A self-cleaning type kiln tail gas waste heat utilization device, as shown in Figures 1-11 the figure, includes a waste heat boiler 1 and a rotary door 101; the rotary door 101 is rotatably arranged on the waste heat boiler 1, and by opening the rotary door 101, the inside of the waste heat boiler 1 can be repaired, and by closing the rotary door 101, the kiln tail gas in the waste heat boiler 1 can be sealed; It further includes guide rail Ⅰ2, sliding plate Ⅰ3, U-shaped tube 4, guide rail Ⅱ5, sliding plate Ⅱ6, water pipe 7, hose Ⅰ8, slider 9, guide rod 10, movable block 11, connecting pipe 12, nozzle Ⅰ13, moving mechanism, feeding mechanism and translation mechanism; Guide rail Ⅰ2 is installed on the front lower side inside the waste heat boiler 1; A sliding plate Ⅰ3 is slidably arranged at intervals on the guide rail Ⅰ2; Four U-shaped tubes 4 are evenly and spacedly connected to the sliding plate Ⅰ3; Guide rail Ⅱ5 is symmetrically arranged front and back on the upper side inside the waste heat boiler 1; A sliding plate Ⅱ6 is slidably arranged at intervals between the two guide rails Ⅱ5, and the number of the sliding plate Ⅱ6 is the same as that of the sliding plate Ⅰ3. A plurality of water pipes 7 are installed between the sliding plate Ⅰ3 and the sliding plate Ⅱ6, and the bottom end of the water pipe 7 is communicated with the U-shaped tube 4; Both ends of the hose Ⅰ8 are respectively communicated with the inside of the waste heat boiler 1 and the top end of the water pipe 7, so that the waste heat boiler 1 can introduce clean water into the water pipe 7 through the hose Ⅰ8 to be heated by the kiln tail gas, and the waste heat boiler 1 can also draw away the hot water in the water pipe 7 through the hose Ⅰ8; Sliders 9 are symmetrically slidably arranged up and down at the rear side inside the waste heat boiler 1; Two guide rods 10 are connected between the sliders 9; A movable block 11 is slidably arranged between the two guide rods 10; A connecting pipe 12 is installed on the movable block 11; Nozzles Ⅰ13 are spacedly communicated on both the left and right sides of the connecting pipe 12, and the nozzles Ⅰ13 are used for spraying dry ice particles onto the outer wall of the water pipe 7 to clean the soot adhered to the outer wall of the water pipe 7 (by using the method of dry ice cleaning, after dry ice cleaning, dry ice can directly sublimate into gas without any cleaning medium residue, and no extra moisture or chemical substances will be introduced into the waste heat boiler 1, which is beneficial to keeping the system clean and extending the service life). The moving mechanism is used to drive the sliding plate Ⅰ3 and the sliding plate Ⅱ6 to move, so as to adjust the distance between the sliding plates Ⅰ3 and the distance between the sliding plates Ⅱ6; The feeding mechanism is used to send dry ice particles into the connecting pipe 12, so that the dry ice particles can enter the nozzles Ⅰ13 through the connecting pipe 12; The translation mechanism is used to drive the movable block 11 to slide on the guide rod 10, so as to drive the connecting pipe 12 and the nozzle Ⅰ13 to slide, thereby adjusting the spraying position of the nozzle Ⅰ13.

[0031] See Figures 4-7 As shown, the moving mechanism includes a connecting plate 14 and an electric push rod Ⅰ15; Connecting plates 14 are connected to the bottoms of the guide rail Ⅰ2 and the guide rail Ⅱ5; Electric push rods Ⅰ15 are installed at intervals on the connecting plate 14. For the connecting plate 14 connected to the guide rail Ⅰ2, the telescopic rod of the electric push rod Ⅰ15 on this connecting plate 14 is connected to the front side of the bottom of the sliding plate Ⅰ3. For the connecting plate 14 connected to the guide rail Ⅱ5, the telescopic rod of the electric push rod Ⅰ15 on this connecting plate 14 is connected to the bottom of the sliding plate Ⅱ6.

[0032] See Figure 8 and Figure 10As shown in the figure, the feeding mechanism includes a dry ice spraying device 16 and a hose II 17; a dry ice spraying device 16 is arranged on the right side inside the waste heat boiler 1; both ends of the hose II 17 are respectively communicated with the dry ice spraying device 16 and the connecting pipe 12, so that the dry ice spraying device 16 can convey dry ice particles into the connecting pipe 12, and then the dry ice particles in the connecting pipe 12 are ejected by the nozzle I 13.

[0033] See Figures 8-10 As shown in the figure, the translation mechanism includes a fixed plate 18, an electric push rod II 19 and an electric push rod III 20; fixed plates 18 are arranged on both the upper and lower sides of the right part of the waste heat boiler 1; the electric push rod II 19 is installed on the fixed plate 18, and the telescopic rods of the two electric push rods II 19 are respectively connected to the two sliders 9; the electric push rod III 20 is installed on the upper slider 9, and the telescopic rod of the electric push rod III 20 is connected to the movable block 11.

[0034] During use, the kiln tail gas is introduced into the waste heat boiler 1, and the clear water is introduced into the water pipe 7 through the waste heat boiler 1 by using the hose I 8, so that the kiln tail gas heats the clear water in the water pipe 7, thereby recycling the heat in the kiln tail gas. Then, the hot water in the water pipe 7 is led away through the waste heat boiler 1 by using the hose I 8. In this way, the waste heat of the kiln tail gas can be utilized. Afterwards, when it is necessary to clean the soot adhering to the outer wall of the water pipe 7, the electric push rod I 15 drives the sliding plate I 3 and the sliding plate II 6 to move rightward by a specified distance (the closer the sliding plate I 3 and the sliding plate II 6 are to the right side inside the waste heat boiler 1, the farther they move rightward, and then the moving distances of the sliding plate I 3 and the sliding plate II 6 gradually decrease from right to left). In this way, the distance between adjacent two sliding plates I 3 can be gradually increased, and at the same time, the distance between adjacent two sliding plates II 6 can be gradually increased, so as to adjust the distance between the water pipes 7. After the adjustment, the dry ice injection device 16 is used to transport dry ice particles into the connecting pipe 12 through the hose II 17 until the dry ice particles are ejected from the nozzle I 13. Then, the electric push rod II 19 drives the slider 9, the guide rod 10, the movable block 11, the connecting pipe 12 and the nozzle I 13 to move leftward, so that the nozzle I 13 is located directly below the water pipes 7. After that, the electric push rod III 20 drives the movable block 11, the connecting pipe 12 and the nozzle I 13 to move upward, so that the nozzle I 13 sprays the dry ice particles onto the outer wall of the water pipe 7, thereby cleaning the soot adhering to the outer wall of the water pipe 7. After the soot adhering to the outer wall of the water pipe 7 is cleaned, the electric push rod III 20 drives the movable block 11, the connecting pipe 12 and the nozzle I 13 to move downward to reset. Then, the electric push rod II 19 drives the slider 9, the guide rod 10, the movable block 11, the connecting pipe 12 and the nozzle I 13 to move leftward again until the nozzle I 13 is located directly below the remaining water pipes 7. After that, the above operations are repeated, so that the nozzle I 13 can spray the dry ice particles onto the outer walls of the remaining water pipes 7, thereby cleaning the soot adhering to the outer walls of the remaining water pipes 7. In this way, the soot adhering to the outer walls of all the water pipes 7 can be cleaned. After the soot adhering to the outer walls of all the water pipes 7 is cleaned, the electric push rod II 19 drives the slider 9, the guide rod 10, the movable block 11, the connecting pipe 12 and the nozzle I 13 to move rightward to reset. Then, the electric push rod I 15 drives the sliding plate I 3 and the sliding plate II 6 to move leftward to reset, so that the distance between the water pipes 7 can be restored to its original state; Afterwards, when the water pipe 7 needs to be repaired, the rotating door 101 on the waste heat boiler 1 can be rotated and opened. Then, the electric push rod I 15 is used to drive the sliding plate I 3 and the sliding plate II 6 to move to the right by a specified distance again (the closer the sliding plate I 3 and the sliding plate II 6 are to the right side inside the waste heat boiler 1, the farther they move to the right, and then the moving distance of the sliding plate I 3 and the sliding plate II 6 gradually decreases from right to left). In this way, the distance between adjacent two sliding plates I 3 can be gradually increased, and at the same time, the distance between adjacent two sliding plates II 6 can be gradually increased, so as to adjust the distance between the water pipes 7. After the adjustment, the water pipe 7 that needs to be repaired can be repaired. And by adjusting the distance between the water pipes 7, it is convenient for the repairman to repair the water pipe 7. After the repair of the water pipe 7 is completed, the electric push rod I 15 is used to drive the sliding plate I 3 and the sliding plate II 6 to move to the left to reset, so that the distance between the water pipes 7 returns to its original state. Then, the rotating door 101 on the waste heat boiler 1 is rotated and closed in reverse.

[0035] See Figures 11-13 As shown, it further includes a swing mechanism, which includes a universal pipe 21, a nozzle II 22, a connecting block 23, a rotating rod 24 and a driving member; the universal pipes 21 are communicated with the connecting pipe 12 at intervals; the nozzle II 22 is installed on the universal pipe 21; the connecting blocks 23 are arranged on the connecting pipe 12 at intervals, the positions of the connecting blocks 23 are the same as those of the universal pipes 21, and the connecting blocks 23 are located above the universal pipes 21; the rotating rod 24 is rotatably arranged on the connecting block 23, and one end of the rotating rod 24 is connected with the nozzle II 22; the driving member includes a guide rail III 25, a push-pull block 26 and an electric push rod IV 27. The guide rail III 25 is installed on the top of the connecting pipe 12, the push-pull block 26 is slidably arranged on the guide rail III 25, and the push-pull block 26 is movably connected with the other end of the rotating rod 24. When the push-pull block 26 moves forward, the push-pull block 26 will push the rotating rod 24 to rotate. When the push-pull block 26 moves backward, the push-pull block 26 will pull the rotating rod 24 to rotate in reverse; the electric push rod IV 27 is installed at the rear side of the top of the connecting pipe 12, and the telescopic rod of the electric push rod IV 27 is connected with the rear side of the push-pull block 26.

[0036] After the dry ice injection device 16 transports dry ice particles into the connecting pipe 12 through the hose II 17, the dry ice particles will not only be ejected from the nozzle I 13, but also be ejected from the nozzle II 22 through the universal pipe 21, so that the dry ice particles will be ejected onto the outer wall of the water pipe 7 by the nozzle I 13 and the nozzle II 22 together, thereby cleaning the soot adhering to the outer wall of the water pipe 7; during the injection of dry ice particles by the nozzle II 22, the electric push rod IV 27 can be used to drive the push-pull block 26 to reciprocate back and forth on the guide rail III 25. When the push-pull block 26 moves forward, the push-pull block 26 will push the rotating rod 24 to rotate, so that the rotating rod 24 drives the nozzle II 22 to swing backward. When the push-pull block 26 moves backward and resets, the push-pull block 26 will pull the rotating rod 24 to reverse, so that the rotating rod 24 drives the nozzle II 22 to swing forward. Repeating like this, the nozzle II 22 can be made to swing back and forth, so that when the nozzle II 22 injects dry ice particles, the injection range of the nozzle II 22 can be increased, thereby expanding the cleaning range of the nozzle II 22 for the outer wall of the water pipe 7, and thus improving the cleaning efficiency.

[0037] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A self-cleaning kiln tail gas waste heat utilization device, comprising a waste heat boiler (1) and a revolving door (101), characterized in that: The invention also comprises a guide rail I (2), a sliding plate I (3), a U-shaped tube (4), a guide rail II (5), a sliding plate II (6), a water pipe (7), a hose I (8), a slider (9), a guide rod (10), a movable block (11), a connecting tube (12), a nozzle I (13), a moving mechanism, a feeding mechanism and a translation mechanism. The guide rail I (2) is installed in the waste heat boiler (1). The guide rail I (2) is provided with sliding plates I (3) at intervals for sliding movement. The sliding plates I (3) are connected to the U-shaped tubes (4) at even intervals. The guide rails II (5) are symmetrically arranged in the waste heat boiler (1). The guide rails II (5) are provided with sliding plates II (6) at even intervals for sliding movement. A water pipe (7) is installed between the sliding plates I (3) and the sliding plates II (6). The bottom end of the tube (7) is connected to the U-shaped tube (4), and the two ends of the hose I (8) are respectively connected to the inside of the waste heat boiler (1) and the top of the water pipe (7). Slide blocks (9) are symmetrically arranged in the upper and lower parts of the waste heat boiler (1). Guide rods (10) are connected between the slide blocks (9). A movable block (11) is slidably arranged on the guide rods (10). A connecting pipe (12) is installed on the movable block (11). A nozzle I (13) is connected to the connecting pipe (12) at intervals. The nozzle I (13) is used to spray dry ice particles onto the outer wall of the water pipe (7). The moving mechanism is used to drive the sliding plate I (3) and the sliding plate II (6) to move. The feeding mechanism is used to feed the dry ice particles into the connecting pipe (12). The translation mechanism is used to drive the movable block (11) to move.

2. A self-cleaning kiln tail gas waste heat utilization device as claimed in claim 1, characterized in that: The moving mechanism comprises a connecting plate (14) and an electric push rod I (15). The connecting plate (14) is mounted on the guide rail I (2) and the guide rail II (5). The electric push rods I (15) are installed on the connecting plate (14) at intervals. The telescopic rods of the electric push rods I (15) are respectively connected to the sliding plate I (3) and the sliding plate II (6).

3. A self-cleaning kiln tail gas waste heat utilization device as claimed in claim 2, characterized in that: The feeding mechanism comprises a dry ice blasting device (16) and a hose II (17). The dry ice blasting device (16) is installed in the waste heat boiler (1), and the two ends of the hose II (17) are respectively connected to the dry ice blasting device (16) and the connecting pipe (12).

4. A self-cleaning kiln tail gas waste heat utilization device as claimed in claim 3, characterized in that: The translation mechanism comprises a fixed plate (18) and an electric push rod II (19). The fixed plate (18) is arranged on the side wall of the waste heat boiler (1). The electric push rod II (19) is mounted on the fixed plate (18). The telescopic rod of the electric push rod II (19) is connected to the slider (9).

5. A self-cleaning kiln tail gas waste heat utilization device as claimed in claim 4, characterized in that: The translation mechanism also includes an electric push rod III (20), which is mounted on the slider (9) on one side, and a telescopic rod of the electric push rod III (20) is connected to the movable block (11).

6. A self-cleaning kiln tail gas waste heat utilization device as claimed in claim 5, characterized in that: It also includes a swing mechanism, including a universal tube (21) and a nozzle II (22). The universal tube (21) is connected to the connecting tube (12) at intervals, and the nozzle II (22) is installed on the universal tube (21).

7. A self-cleaning kiln tail gas waste heat utilization device as claimed in claim 6, characterized in that: The swing mechanism further comprises a connecting block (23), a rotating rod (24) and a driving member. The connecting block (23) is arranged at intervals on the connecting pipe (12). The rotating rod (24) is rotatably arranged on the connecting block (23). One end of the rotating rod (24) is connected to the nozzle II (22). The driving member is used to drive the rotating rod (24) to rotate.

8. The self-cleaning kiln tail gas waste heat utilization device as claimed in claim 7, characterized in that: The driving member comprises a guide rail III (25), a push-pull block (26) and an electric push rod IV (27). The guide rail III (25) is mounted on the connecting tube (12). The push-pull block (26) is slidably arranged on the guide rail III (25). The push-pull block (26) is movably connected to the other end of the rotating rod (24). The electric push rod IV (27) is mounted on the connecting tube (12). The telescopic rod of the electric push rod IV (27) is connected to the push-pull block (26).

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