A direct-entry kiln tail gas waste heat utilization device

Abstract

The present invention relates to the technical field of waste heat recovery, and in particular to a direct-entry kiln tail gas waste heat utilization device. It includes a tail gas collection frame, a water pump I, a pipeline, a heat conductive sheet, etc., two water pumps I are arranged on the tail gas collection frame, the pipeline is installed in the tail gas collection frame, the two ends of the pipeline are respectively connected to the two water pumps I, and the outer wall of the pipeline is provided with a heat conductive sheet. The present invention cooperates with a scraper, a liquid storage tank, a cover plate, a water pump II, a three-way valve, a butt pipe, a connecting frame, a lifting mechanism and a sealing mechanism, and can use a scraper to scrape off the smoke and dust on the outer wall of the pipeline and the heat conductive sheet, thereby preventing the accumulation of smoke and dust on the outer wall of the pipeline and the heat conductive sheet, thereby improving the recovery efficiency of the kiln tail gas waste heat, and can also use the alkaline liquid in the connecting frame to neutralize the condensed acid on the outer wall of the pipeline and the heat conductive sheet, thereby removing the condensed acid on the outer wall of the pipeline, thereby extending the service life of the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery, and in particular to a direct-entry kiln tail gas waste heat utilization device. Background Art

[0002] Under the current background of global energy shortage and increasingly stringent environmental protection requirements, energy conservation and emission reduction in industrial production processes have become a key development direction. Kilns, as indispensable high-temperature heating equipment in many industrial productions, are widely used in building materials, metallurgy, chemical industry and other fields. A large amount of high-temperature flue gas will be generated during its operation; these tail gases usually carry unused sensible heat and latent heat energy, which will cause huge energy waste if directly discharged into the atmosphere; and the direct-entry kiln is a high-temperature heating furnace designed to directly process raw materials or products. Its characteristic is the direct intervention of the tail gas waste heat recovery system. In such a system, the high-temperature flue gas discharged from the kiln is immediately introduced into the adjacent waste heat recovery device without passing through a complex pipeline network, which can minimize heat loss and improve heat recovery efficiency.

[0003] At present, the solution to the utilization of waste heat from direct-entry kiln exhaust gas is generally to use the waste heat from the kiln to make hot water for production or domestic water needs; however, when using the waste heat from the kiln to make hot water, since the pipeline needs to be in the high-temperature flue gas emitted by the kiln for a long time, smoke dust is easily adhered to the outer wall of the pipeline. These attached smoke dusts tend to accumulate over time, thereby affecting the heating of the clean water in the pipeline, resulting in reduced recovery efficiency. In addition, the kiln exhaust gas may contain acidic gases. After being affected by the clean water in the pipeline, these acidic gases are prone to form condensed acid under low temperature conditions, thereby causing corrosion to the pipeline and reducing the service life of the pipeline. Summary of the invention

[0004] In view of this, the present invention provides a direct-entry kiln exhaust waste heat utilization device, which can solve the current shortcomings of using kiln waste heat to make hot water, the smoke dust adhering to the outer wall of the pipeline is easy to affect the heating of the clean water, resulting in reduced recovery efficiency, and the acidic gas in the kiln exhaust gas forms condensed acid after cooling, which is easy to corrode the pipeline, resulting in a reduced service life of the pipeline.

[0005] The technical solution is: a direct-entry kiln tail gas waste heat utilization device, including a tail gas collection frame, an air inlet pipe and an air outlet pipe, and also includes a water pump I, a pipeline, a heat conductive sheet, a scraper, a liquid storage tank, a cover plate, a water pump II, a three-way valve, a butt pipe, a connecting frame, a lifting mechanism and a sealing mechanism. Two water pumps I are arranged on the tail gas collection frame, and the pipeline is installed in the tail gas collection frame. The two ends of the pipeline are respectively connected to the two water pumps I. The outer wall of the pipeline is provided with a heat conductive sheet, which is located inside the tail gas collection frame. The scraper is slidably arranged in the tail gas collection frame, and the scraper is connected to the pipeline and the heat conductive sheet. The scraper is used to scrape off the smoke and dust on the pipe and the heat conducting plate. The liquid storage tank is installed on the exhaust gas collecting frame, the cover plate is rotatably set on the liquid storage tank, the water pump II is installed on the liquid storage tank, and the water pump II is connected with the liquid storage tank. One end of the three-way valve is connected to the water pump II, and the other two ends of the three-way valve are connected with a docking pipe. The bottom end of the scraper is connected with a connecting frame, the connecting frame is in contact with the pipe and the heat conducting plate, and two through holes are opened on the connecting frame, and the butt joint pipe extends into the through holes of the connecting frame. The lifting mechanism is used to drive the scraper to lift and lower, and the sealing mechanism is used to seal the through holes on the connecting frame.

[0006] Furthermore, the lifting mechanism includes a servo motor and a screw rod. The servo motor is symmetrically arranged on the exhaust gas collection frame. The screw rod is symmetrically arranged in the exhaust gas collection frame for rotation. The scraper is threadedly connected to the screw rod, and the end of the screw rod is connected to the output shaft of the servo motor.

[0007] Furthermore, the sealing mechanism includes a guide rod, a baffle and a spring I. Two groups of guide rods are arranged on the connecting frame, and the number of guide rods in each group is two. A baffle is slidably arranged between each group of guide rods. The baffle is located directly above the through hole. The baffle is used to block the through hole. The two ends of the spring I are respectively connected to the guide rod and the baffle.

[0008] Furthermore, it also includes an adsorption mechanism, which includes a magnetic plate I and a magnetic plate II. The magnetic plate I is installed on the exhaust gas collection frame, and the magnetic plate II is installed on the cover plate. The magnetic plate II contacts the magnetic plate I when it moves.

[0009] Furthermore, it also includes a stirring mechanism, which includes a reduction motor and a stirring frame. The reduction motor is installed on the liquid storage tank, and the stirring frame is rotatably arranged inside the liquid storage tank. The stirring frame is connected to the output shaft of the reduction motor, and the stirring frame is used to stir the liquid in the liquid storage tank.

[0010] Furthermore, it also includes a cleaning mechanism, which includes a top plate, a spring II, a fan, an air outlet frame and a top block. A groove is opened at the top of the exhaust gas collecting frame, and a top plate is slidably arranged at the top of the exhaust gas collecting frame. The top plate blocks the groove. The two ends of the spring II are respectively connected to the top plate and the exhaust gas collecting frame. Fans are installed on the exhaust gas collecting frame at intervals, and the air outlet of the fan is connected to the groove. The fan is used to blow air into the groove. The air outlet frame is installed on the exhaust gas collecting frame, and the air outlet frame is connected to the groove. Top blocks are installed on the top of the scraper at intervals, and the top blocks contact the top plate when they are active.

[0011] Furthermore, the cleaning mechanism also includes a fixed frame and a filter cartridge. The fixed frame is connected to the air outlet frame. The filter cartridge is slidably arranged in the fixed frame. The filter cartridge is used to filter out smoke and dust in the air.

[0012] Furthermore, the cleaning mechanism also includes a smoke collection frame, which is slidably mounted on the connecting frame and is used to collect the smoke filtered out by the filter cartridge.

[0013] The beneficial effects are as follows: 1. The present invention cooperates with a scraper, a liquid storage tank, a cover plate, a water pump II, a three-way valve, a butt pipe, a connecting frame, a lifting mechanism and a sealing mechanism. The scraper can be used to scrape off the smoke and dust on the outer walls of the pipe and the heat conducting plate, thereby preventing the accumulation of smoke and dust on the outer walls of the pipe and the heat conducting plate, thereby improving the recovery efficiency of the waste heat of the kiln exhaust gas, and the alkaline liquid in the connecting frame can be used to neutralize the condensed acid on the outer walls of the pipe and the heat conducting plate, thereby removing the condensed acid on the outer wall of the pipe, thereby extending the service life of the pipe.

[0014] 2. The present invention provides an adsorption mechanism and a stirring mechanism, and can use magnetic plates I and II to limit the cover plate, so that it is convenient for people to add alkaline liquid into the liquid storage tank, and can also drive the stirring frame to rotate through a reduction motor to stir the alkaline liquid in the liquid storage tank, so that the alkaline liquid is mixed evenly and the alkaline liquid is prevented from precipitating.

[0015] 3. The present invention is provided with a cleaning mechanism, which can automatically clean the smoke on the top of the scraper in the exhaust gas collection frame, and then can use the filter cartridge and the smoke collection frame to collect the cleaned smoke, so as to facilitate people to carry out centralized treatment of the smoke later. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a cross-sectional view of the exhaust gas collecting frame, the air inlet pipe and the air outlet pipe of the present invention.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the lifting mechanism of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the liquid storage tank, cover plate and water pump II of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the scraper, connecting frame and butt pipe of the present invention.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the three-way valve, the butt pipe and the connection frame of the present invention.

[0022] Figure 7 It is a cross-sectional view of the connection frame of the present invention.

[0023] Figure 8 For the present invention Figure 7 Enlarged view of point A in .

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the adsorption mechanism and the stirring mechanism of the present invention.

[0025] Fig.10 It is a cross-sectional view of the liquid storage tank of the present invention.

[0026] Fig.11 It is a three-dimensional structural schematic diagram of the cleaning mechanism of the present invention.

[0027] Fig.12 It is a cross-sectional view of the cleaning mechanism of the present invention.

[0028] The names and serial numbers of the parts in the figure are: 1. exhaust gas collection frame, 101. air inlet pipe, 102. air outlet pipe, 2. water pump I, 3. pipeline, 4. heat conductive sheet, 5. scraper, 6. liquid storage tank, 7. cover plate, 8. water pump II, 9. three-way valve, 10. docking pipe, 11. connecting frame, 111. through hole, 12. servo motor, 13. screw rod, 14. guide rod, 15. baffle, 16. spring I, 17. magnetic plate I, 18. magnetic plate II, 19. reduction motor, 20. stirring frame, 21. groove, 22. top plate, 23. spring II, 24. fan, 25. air outlet frame, 26. top block, 27. fixing frame, 28. filter cartridge, 29. smoke collection frame. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] Embodiment: A direct-entry kiln tail gas waste heat utilization device, see Figure 1-Figure 8 As shown, it includes an exhaust gas collection frame 1, an air inlet pipe 101 and an air outlet pipe 102; the air inlet pipe 101 is connected to the left side of the exhaust gas collection frame 1, and the air inlet pipe 101 is used for the exhaust gas of the kiln to enter the exhaust gas collection frame 1; the air outlet pipe 102 is connected to the right side of the exhaust gas collection frame 1, and the air outlet pipe 102 is used for the exhaust gas in the exhaust gas collection frame 1 to be discharged;

[0031] It also includes a water pump Ⅰ2, a pipeline 3, a heat conducting sheet 4, a scraper 5, a liquid storage tank 6, a cover plate 7, a water pump Ⅱ8, a three-way valve 9, a butt pipe 10, a connecting frame 11, a lifting mechanism and a sealing mechanism; two water pumps Ⅰ2 are arranged at the bottom of the exhaust gas collection frame 1, and the two water pumps Ⅰ2 are distributed on the left and right; the pipeline 3 is installed in the exhaust gas collection frame 1, and the two ends of the pipeline 3 are connected to the two water pumps Ⅰ2 respectively; the outer wall of the pipeline 3 is provided with a heat conducting sheet 4, and heat is conducted through the heat conducting sheet 4. The heat conducting sheet 4 can heat the clean water in the pipe 3, and the heat conducting sheet 4 is located inside the exhaust gas collecting frame 1; the scraper 5 is slidably arranged in the exhaust gas collecting frame 1, and the scraper 5 is in contact with the pipe 3 and the heat conducting sheet 4, and the scraper 5 is used to scrape off the smoke and dust on the pipe 3 and the heat conducting sheet 4; the liquid storage tank 6 is installed on the lower side of the exhaust gas collecting frame 1, and the liquid storage tank 6 is used to store alkaline liquid; the cover plate 7 is rotatably arranged on the liquid storage tank 6; the water pump II 8 is installed on the liquid storage tank 6, and the water pump II 8 The water inlet is connected to the liquid storage tank 6; one end of the three-way valve 9 is connected to the water outlet of the water pump II 8, and the other two ends of the three-way valve 9 are connected to the butt pipe 10, and the two butt pipes 10 are both L-shaped; the bottom end of the scraper 5 is connected to the connecting frame 11, the connecting frame 11 is in contact with the pipeline 3 and the heat conducting sheet 4, and the bottom of the connecting frame 11 has two through holes 111, and the positions of the two through holes 111 are lower than the remaining positions at the bottom of the connecting frame 11, so that the alkaline liquid at the remaining positions at the bottom of the connecting frame 11 can be collected at the two through holes 111, and the two butt pipes 10 are respectively extended into the two through holes 111 of the connecting frame 11, and the butt pipe 10 is used to introduce the alkaline liquid into the connecting frame 11; the lifting mechanism is used to drive the scraper 5 to lift and lower, so that the scraper 5 can scrape off the smoke and dust on the pipeline 3 and the heat conducting sheet 4 by sliding; the sealing mechanism is used to seal the through holes 111 on the connecting frame 11 to prevent the alkaline liquid in the connecting frame 11 from leaking out.

[0032] See also Figure 2 and Figure 3 As shown, the lifting mechanism includes a servo motor 12 and a screw rod 13; four servo motors 12 are symmetrically arranged at the bottom of the exhaust gas collecting frame 1; four screw rods 13 are symmetrically arranged in the exhaust gas collecting frame 1 for rotation, the scraper 5 is threadedly connected to the four screw rods 13, and the bottom ends of the four screw rods 13 are respectively connected to the output shafts of the four servo motors 12.

[0033] See also Figure 7 and Figure 8As shown, the sealing mechanism includes a guide rod 14, a baffle 15 and a spring Ⅰ16; two groups of guide rods 14 are arranged on the connecting frame 11, and the number of guide rods 14 in each group is two; a baffle 15 is slidably arranged between each group of guide rods 14, and the baffle 15 is located directly above the through hole 111, and the bottom end of the baffle 15 is in contact with the butt pipe 10, and the baffle 15 is used to block the through hole 111. A sealing ring is arranged at the bottom of the baffle 15, and the sealing ring is used to seal between the baffle 15 and the connecting frame 11, so as to improve the sealing effect of the through hole 111; the two ends of the spring Ⅰ16 are respectively connected to the guide rod 14 and the baffle 15.

[0034] In the initial state, the top end of the butt-joint pipe 10 presses against the bottom end of the baffle 15, so that the spring I 16 is in a compressed state;

[0035] When in use, the kiln exhaust gas is discharged into the exhaust gas collection frame 1 through the air inlet pipe 101, and then the kiln exhaust gas is discharged from the air outlet pipe 102, so that the kiln exhaust gas passes through the exhaust gas collection frame 1; then the clean water is pumped into the pipe 3 through the water pump Ⅰ2 on the left side, so that the clean water in the pipe 3 is heated in the exhaust gas collection frame 1, and the heat conducting sheet 4 is used for heat conduction, so that the heat conducting sheet 4 can absorb heat to heat the clean water in the pipe 3, thereby accelerating the temperature rise of the clean water in the pipe 3, and then the hot water in the pipe 3 is pumped out through the water pump Ⅰ2 on the right side, so that the waste heat in the kiln exhaust gas can be recycled;

[0036] When it is necessary to clean the smoke and condensed acid on the outer wall of the pipe 3 and the heat conducting plate 4, the cover plate 7 can be pushed to rotate and open, and then the alkaline liquid is added into the liquid storage tank 6. After the alkaline liquid is added, the cover plate 7 is pulled to reverse and close, and then the three-way valve 9 is opened, and then the alkaline liquid in the liquid storage tank 6 is pumped into the three-way valve 9 and the butt joint 10 through the water pump II 8, so that the butt joint 10 introduces the alkaline liquid into the connecting frame 11, until the connecting frame 11 is filled with a proper amount of alkaline liquid, and then the three-way valve 9 is closed, and then the servo motor 12 drives the screw rod 13 to rotate, so that the scraper 5 moves upward, so that the scraper 5 scrapes off the smoke on the outer wall of the pipe 3 and the heat conducting plate 4. At the same time, the upward movement of the scraper 5 will drive the connecting frame 11, the guide rod 14 and the baffle 15 to move upward. When the baffle 15 is separated from the butt joint 10, the spring I 16 returns to its original state, and the spring I 16 drives the baffle 15 to move downward, so that the baffle 15 contacts the connecting frame 11 , so that the baffle 15 blocks the through hole 111. During this period, when the alkaline liquid in the connecting frame 11 contacts the condensed acid on the outer wall of the pipe 3 and the heat conducting plate 4, the alkaline liquid will react with the condensed acid to neutralize the condensed acid, thereby removing the condensed acid on the outer wall of the pipe 3; after that, when the smoke and condensed acid on the outer wall of the pipe 3 and the heat conducting plate 4 are cleaned, the servo motor 12 drives the screw rod 13 to reverse and reset, so that the scraper 5 moves downward and resets. At the same time, the downward movement of the scraper 5 will drive the connecting frame 11, the guide rod 14 and the baffle 15 to move downward and reset. When the baffle 15 contacts the butt joint 10, the butt joint 10 will squeeze the baffle 15 to move upward and reset, and the spring I 16 is compressed to separate the baffle 15 from the connecting frame 11, so that the baffle 15 no longer blocks the through hole 111, and then the three-way valve 9 is opened to allow the alkaline liquid in the connecting frame 11 to flow back to the liquid storage tank 6 through the butt joint 10 and the three-way valve 9, and then the three-way valve 9 can be closed.

[0037] See also Fig. 9 As shown, an adsorption mechanism is also included, which includes a magnetic plate I17 and a magnetic plate II18; the magnetic plate I17 is installed at the lower front part of the exhaust gas collection frame 1; the magnetic plate II18 is installed at the top of the cover plate 7, and the magnetic plate II18 will contact the magnetic plate I17 when rotating with the cover plate 7.

[0038] When the cover 7 is pushed to rotate and open, the cover 7 will drive the magnetic plate II 18 to rotate. When the magnetic plate II 18 contacts the magnetic plate I 17, the magnetic plate II 18 will use magnetic force to attract the magnetic plate I 17, thereby limiting the position of the magnetic plate I 17 and the cover 7. In this way, it is convenient for people to add alkaline liquid into the liquid storage tank 6. After the alkaline liquid is added, the cover 7 is pulled to reverse and close. The cover 7 will drive the magnetic plate II 18 to reverse and reset, so that the magnetic plate II 18 is separated from the magnetic plate I 17.

[0039] See also Fig. 9 and Fig.10As shown, a stirring mechanism is also included, which includes a reduction motor 19 and a stirring frame 20; the reduction motor 19 is installed on the left side of the liquid storage tank 6; the stirring frame 20 is rotatably arranged inside the liquid storage tank 6, the stirring frame 20 is connected to the output shaft of the reduction motor 19, and the stirring frame 20 is used to stir the liquid in the liquid storage tank 6.

[0040] After the alkaline liquid is added into the liquid storage tank 6, the stirring frame 20 can be driven to rotate by the reduction motor 19, so that the stirring frame 20 stirs the alkaline liquid in the liquid storage tank 6, so that the alkaline liquid is mixed evenly and the alkaline liquid is prevented from precipitating.

[0041] See also Fig. 9 , Fig.11 and Fig.12 As shown, it also includes a cleaning mechanism, which includes a top plate 22, a spring II 23, a fan 24, an air outlet frame 25, a top block 26, a fixed frame 27, a filter cartridge 28 and a smoke collection frame 29; a groove 21 is opened at the top of the exhaust gas collection frame 1; a top plate 22 is slidably arranged at the top of the exhaust gas collection frame 1, and the top plate 22 blocks the groove 21; the two ends of the spring II 23 are respectively connected to the top of the top plate 22 and the top of the exhaust gas collection frame 1; a fan 24 is installed at intervals on the upper right side of the exhaust gas collection frame 1, and the air outlet of the fan 24 is connected to the groove 21, so that the fan 24 can The wind is blown into the groove 21; the air outlet frame 25 is installed on the upper left side of the exhaust gas collecting frame 1, and the air outlet frame 25 is connected with the groove 21, so that the wind in the groove 21 can be blown into the air outlet frame 25; the top of the scraper 5 is spaced apart with a top block 26, and the top block 26 will contact the top plate 22 when it moves up; the fixed frame 27 is connected to the left side of the air outlet frame 25; the filter cartridge 28 is slidably arranged in the fixed frame 27, and the filter cartridge 28 is used to filter out the smoke in the air; the smoke collection frame 29 is slidably installed on the connecting frame 11, and the smoke collection frame 29 is used to collect the smoke filtered out by the filter cartridge 28.

[0042] When the scraper 5 moves upward to scrape off the smoke and dust on the outer walls of the pipe 3 and the heat conducting sheet 4, the scraped smoke and dust will fall on the top of the scraper 5. At the same time, the upward movement of the scraper 5 will drive the top block 26 to move upward. When the top block 26 contacts the top plate 22, the top block 26 will squeeze the top plate 22 to move upward, and the spring II 23 will be compressed. Then, when the scraper 5 and the top block 26 continue to move upward, the smoke and dust on the scraper 5 will enter the groove 21 at the top of the exhaust gas collecting frame 1. Then, when the scraper 5 contacts the top of the collecting frame 1, the scraper 5 and the top of the collecting frame 1 will seal the smoke and dust in the groove 21, and then the fan 24 is used to blow air into the groove 21, so that the smoke and dust in the groove 21 at the top of the scraper 5 can be blown to the left into the air outlet frame 25 and the fixed frame 27. When the smoke and dust enter the fixed frame 27 with the air, the filter cartridge 28 will filter the smoke and air in the fixed frame 27 to make the air The smoke is discharged outwardly through the filter cartridge 28, while the smoke is blocked by the filter cartridge 28 at the outer wall and falls downward into the smoke collecting frame 29 for collection. In this way, the smoke on the top of the scraper 5 can be cleaned and collected. After the smoke on the top of the scraper 5 is cleaned, the servo motor 12 drives the screw rod 13 to reverse and reset, so that the scraper 5 moves downward and resets, thereby causing the scraper 5 to drive the top block 26 to move downward and reset. When the top block 26 is separated from the top plate 22, the spring II 23 returns to its original state, and the spring II 23 drives the top plate 22 to move downward and reset; when the filter cartridge 28 needs to be replaced, the filter cartridge 28 can be pulled forward and then the new filter cartridge 28 is put back to its original position; when the smoke in the smoke collecting frame 29 needs to be cleaned, the smoke collecting frame 29 can be pulled backward and then the smoke in the smoke collecting frame 29 is poured out, and then the smoke collecting frame 29 is put back to its original position.

[0043] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A direct-entry kiln tail gas waste heat utilization device, comprising a tail gas collection frame, an air inlet pipe and an air outlet pipe, characterized in that: It also includes a water pump I, a pipeline, a heat conducting sheet, a scraper, a liquid storage tank, a cover plate, a water pump II, a three-way valve, a butt pipe, a connecting frame, a lifting mechanism and a sealing mechanism. The two water pumps I are both arranged on the exhaust gas collecting frame, the pipeline is installed in the exhaust gas collecting frame, and the two ends of the pipeline are respectively connected with the two water pumps I, the outer wall of the pipeline is provided with a heat conducting sheet, the heat conducting sheet is located inside the exhaust gas collecting frame, the scraper is slidably arranged in the exhaust gas collecting frame, and the scraper is in contact with the pipeline and the heat conducting sheet, and the scraper is used to scrape off the smoke on the pipeline and the heat conducting sheet, the liquid storage tank is installed on the exhaust gas collecting frame, the cover plate is rotatably arranged on the liquid storage tank, the water pump II is installed on the liquid storage tank, and the water pump II is connected with the liquid storage tank, one end of the three-way valve is connected to the water pump II, and the other two ends of the three-way valve are connected with the butt pipe, the bottom end of the scraper is connected with the connecting frame, the connecting frame is in contact with the pipeline and the heat conducting sheet, and two openings are provided on the connecting frame The through hole is provided, and the butt-jointing tube extends into the through hole of the connecting frame. The lifting mechanism is used to drive the scraper to lift and lower, and the sealing mechanism is used to seal the through hole on the connecting frame. The lifting mechanism includes a servo motor and a screw rod. The servo motor is symmetrically arranged on the exhaust gas collecting frame, and the screw rod is symmetrically arranged in the exhaust gas collecting frame for rotation. The scraper is threadedly connected to the screw rod, and the end of the screw rod is connected to the output shaft of the servo motor. The sealing mechanism includes a guide rod, a baffle and a spring I. Two groups of guide rods are provided on the connecting frame, and the number of guide rods in each group is two. A baffle is slidably arranged between each group of guide rods, and the baffle is located directly above the through hole. The baffle is used to block the through hole, and the two ends of the spring I are respectively connected to the guide rod and the baffle. It also includes an adsorption mechanism, and the adsorption mechanism includes a magnetic plate I and a magnetic plate II. The magnetic plate I is installed on the exhaust gas collecting frame, and the magnetic plate II is installed on the cover plate. The magnetic plate II contacts with the magnetic plate I when it moves.

2. The direct-entry kiln tail gas waste heat utilization device according to claim 1 is characterized in that: It also includes a stirring mechanism, which includes a reduction motor and a stirring frame. The reduction motor is installed on the liquid storage tank, and the stirring frame is rotatably arranged inside the liquid storage tank. The stirring frame is connected to the output shaft of the reduction motor, and the stirring frame is used to stir the liquid in the liquid storage tank.

3. The direct-entry kiln tail gas waste heat utilization device according to claim 2 is characterized in that: It also includes a cleaning mechanism, which includes a top plate, a spring II, a fan, an air outlet frame and a top block. A groove is opened on the top of the exhaust gas collecting frame, and a top plate is slidably arranged on the top of the exhaust gas collecting frame. The top plate blocks the groove. Both ends of the spring II are respectively connected to the top plate and the exhaust gas collecting frame. Fans are installed on the exhaust gas collecting frame at intervals, and the air outlet of the fan is connected to the groove. The fan is used to blow air into the groove. The air outlet frame is installed on the exhaust gas collecting frame, and the air outlet frame is connected to the groove. Top blocks are installed on the top of the scraper at intervals, and the top blocks contact the top plate when they are active.

4. The direct-entry kiln tail gas waste heat utilization device according to claim 3 is characterized in that: The cleaning mechanism also includes a fixed frame and a filter cartridge. The fixed frame is connected to the air outlet frame. The filter cartridge is slidably arranged in the fixed frame. The filter cartridge is used to filter out smoke and dust in the air.

5. The direct-entry kiln tail gas waste heat utilization device according to claim 4 is characterized in that: The cleaning mechanism also includes a smoke dust collecting frame, which is slidably mounted on the connecting frame and is used for collecting the smoke dust filtered out by the filter cartridge.

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