Rotary kiln waste heat boiler with automatic ash removal function

Abstract

The invention relates to the technical field of rotary kiln waste heat boilers, and discloses a rotary kiln waste heat boiler with an automatic ash removal function. The heat exchange mechanism is arranged in the furnace body and is used for carrying out heat exchange on high-temperature flue gas entering the rotary kiln waste heat boiler; the cleaning mechanism is arranged on the outer side of the heat exchange mechanism and used for cleaning the heat exchange mechanism; the collecting mechanism is arranged on the bottom face of the furnace body, the problem that dust can be accumulated in the long-term operation process of the heat exchange mechanism is considered through the design of the cleaning mechanism, cleanliness of the heat exchange mechanism is guaranteed through regular starting or on-demand starting, and therefore the efficient heat exchange performance of the heat exchange mechanism is maintained. And the collecting mechanism is responsible for temporarily storing the cleaned dust, and the blowing mechanism further ensures that the dust is completely cleaned, so that the pollution to the internal environment of the device and the negative influence on the heat exchange efficiency are avoided. Therefore, the stability and efficiency of the whole heat exchange system are improved, and the purpose of saving energy is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of rotary kiln waste heat boilers, in particular to a rotary kiln waste heat boiler with an automatic dust cleaning function. Background Art

[0002] The existing rotary kiln waste heat boiler is a boiler equipment that uses the temperature difference and pressure difference generated when the high-temperature flue gas in the rotary kiln flows in the pipeline to recover and utilize the waste heat. Its characteristics are that it can effectively prevent flue blockage and improve heat exchange efficiency.

[0003] During the operation of the existing rotary kiln waste heat boiler, the fly ash particles in the flue gas adhere to the heat exchange tubes, which not only reduces the heat exchange efficiency but also causes serious problems such as leakage of the boiler heating surface, making heat exchange difficult and thus leading to energy waste.

[0004] To this end, the present invention provides a rotary kiln waste heat boiler with an automatic ash cleaning function. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The present invention provides a rotary kiln waste heat boiler with an automatic dust cleaning function, comprising a furnace body, and also comprising: a heat exchange mechanism arranged inside the furnace body, the heat exchange mechanism being used to exchange heat with high-temperature flue gas entering the rotary kiln waste heat boiler; a cleaning mechanism arranged outside the heat exchange mechanism, the cleaning mechanism being used to clean the heat exchange mechanism; a collecting mechanism arranged on the bottom surface of the furnace body, the collecting mechanism being used to collect the cleaned dust; and an air blowing mechanism arranged inside the collecting mechanism, the air blowing mechanism being used to blow the dust of the collecting mechanism away from the device.

[0007] By adopting the above technical solution, the design of the cleaning mechanism takes into account the dust problem that will accumulate in the heat exchange mechanism during long-term operation. By starting it regularly or on demand, the heat exchange mechanism is ensured to be clean, thereby maintaining its efficient heat exchange performance. The collection mechanism is responsible for temporarily storing the cleaned dust, and the blowing mechanism further ensures that the dust is completely removed, avoiding pollution to the internal environment of the device and negative impact on the heat exchange efficiency. Thereby improving the stability and efficiency of the entire heat exchange system, thereby achieving the purpose of saving energy.

[0008] Preferably, the furnace body includes a base, the upper end of the base is fixedly connected to a shell, one side of the shell is fixedly connected to an air inlet pipe 1, the side of the shell away from the air inlet pipe 1 is fixedly connected to an air outlet pipe 1, and the outer sides of the air outlet pipe 1 and the air inlet pipe 1 are fixedly connected to solenoid valves.

[0009] Preferably, the heat exchange mechanism includes two connecting pipes fixedly connected to one side of the shell close to the air outlet pipe, the two connecting pipes penetrate through and are fixedly connected to the shell, and one end of the two connecting pipes penetrating through the shell is fixedly connected to a transport pipe.

[0010] Preferably, one of the transport pipes is fixedly connected to a water inlet pipe, and the other transport pipe is fixedly connected to a water outlet pipe, and a plurality of heat exchange pipes are fixedly connected between the water outlet pipe and the water inlet pipe.

[0011] By adopting the above technical solution, in the working process of the heat exchanger, the operator will first open the solenoid valves configured on the outside of the air inlet pipe 1 and the air outlet pipe 1, which provide a guarantee for the subsequent gas flow. Then, the high-temperature flue gas is smoothly introduced into the shell through the air inlet pipe 1, and at the same time, the cold water is accurately transported to the inside of the heat exchange tube through the water inlet pipe. In this process, the high-temperature flue gas is fully in contact with the heat exchange tube, and the heat is efficiently transferred to the cold water in the tube, causing it to heat up quickly and become hot water. Finally, the heated hot water is stably transported to the required equipment through the water outlet pipe, realizing energy conservation and efficient utilization.

[0012] Preferably, the cleaning mechanism includes a top cover fixedly connected to the upper end of the outer shell, the lower end of the top cover is fixedly connected to a reciprocating screw, the lower end of the top cover is fixedly connected to three traction tubes, the outer side of the reciprocating screw is threadedly connected to a cleaning frame, and the cleaning frame is slidably connected to the three traction tubes.

[0013] Preferably, the top end of the reciprocating screw rod passes through and is rotatably connected to the top cover, one end of the reciprocating screw rod passing through the top cover is fixedly connected to a motor, and the bottom surface of the cleaning frame is fixedly connected to a magnet 1.

[0014] By adopting the above technical solution, when the heat exchange tube needs to be cleaned and maintained, the operator will start the motor. The motor will then start and drive the reciprocating screw to start rotating, so that the cleaning frame connected to the reciprocating screw can move up and down along the predetermined track. During this movement, the cleaning frame fits tightly to the outside of the heat exchange tube, especially for the side that is in contact with the high-temperature flue gas for deep cleaning. Through physical friction and brushing, the cleaning frame can effectively remove dust, dirt and other impurities on the surface of the heat exchange tube, so that the dust falls off the surface of the heat exchange tube. This cleaning step is very important. It can ensure that the surface of the heat exchange tube remains clean, thereby preventing dust or other impurities from accumulating and blocking the transfer of heat, thereby affecting the normal working efficiency and performance of the heat exchange tube. Through such a design, not only the service life of the heat exchange tube is extended, but also the efficient and stable operation of the entire heat exchange system is guaranteed.

[0015] Preferably, the collecting mechanism includes an installation frame fixedly connected to the inner wall of the outer shell, the lower end of the installation frame is fixedly connected to a reset spring, the lower end of the reset spring is fixedly connected to a support block, the top of the support block is fixedly connected to a collecting block, and the lower end of the collecting block is fixedly connected to magnet 2.

[0016] Preferably, a sealing ring is fixedly connected to the inner wall of the installation frame, and the bottom surface of the installation frame is in contact with the top surface of the collection block.

[0017] By adopting the above technical solution, dust can be prevented from falling from the collecting block to the base and accumulating. When the cleaning frame moves upward, the repulsion between magnet one and magnet two disappears, and then the reset spring drives the collecting block to reset, thereby sealing the outer shell, thereby ensuring the efficient operation of the entire heat exchange device and avoiding the adverse effects of dust accumulation on the operation of the device.

[0018] Preferably, the blowing mechanism comprises an elastic airbag fixedly connected to the upper end of the base, a magnet three is fixedly connected to the upper end of the elastic airbag, and an air outlet pipe two is fixedly connected to a side of the elastic airbag close to the collecting block.

[0019] Preferably, a side of the elastic airbag away from the collecting block is fixedly connected to an air inlet pipe 2, and a one-way valve is fixedly connected to the outer sides of the air outlet pipe 2 and the air inlet pipe 2.

[0020] By adopting the above technical solution, when the collection block slides smoothly along the preset track, a strong magnetic repulsion is generated between the built-in magnet 2 of the collection block and the magnet 3 located below it. This repulsive force promotes the downward movement of the collection block, so that the magnet 3 of the elastic airbag is repelled by the magnet 2 of the collection block, and will push the elastic airbag to slide down together. As the elastic airbag slides down, the gas will be blown out quickly from the air outlet pipe 2. This airflow is directed to the chute area opened on the collection block, and the dust remaining in the chute is completely blown away by the flushing effect of the airflow. This design not only ensures the effective removal of dust, but also avoids the secondary accumulation of dust, thereby ensuring the efficiency and thoroughness of the entire cleaning process.

[0021] The beneficial effect of the present invention is that the rotary kiln waste heat boiler with automatic dust cleaning function described in the present invention, after high-temperature flue gas enters the furnace body, will flow through the heat exchange mechanism for efficient heat exchange. Subsequently, the cleaning mechanism is started, and the mechanism will clean the surface of the heat exchange mechanism, effectively scrape off and collect the dust accumulated on the heat exchange mechanism into the collection mechanism. Next, the blowing mechanism will be started to completely blow the dust in the collection mechanism away from the entire device. During the heat exchange process, when the high-temperature flue gas passes through the heat exchange mechanism, it will transfer the heat it carries to other media, thereby achieving effective utilization of heat. The design of the cleaning mechanism takes into account the dust problem that will accumulate in the heat exchange mechanism during long-term operation. By starting it regularly or on demand, the heat exchange mechanism is ensured to be clean, thereby maintaining its efficient heat exchange performance. The collection mechanism is responsible for temporarily storing the cleaned dust, and the blowing mechanism further ensures that the dust is completely removed, avoiding pollution to the internal environment of the device and negative impact on the heat exchange efficiency. Thereby improving the stability and efficiency of the entire heat exchange system, thereby achieving the purpose of energy saving.

[0022] In the rotary kiln waste heat boiler with automatic dust cleaning function described in the present invention, when the heat exchange tube needs to be cleaned and maintained, the operator will start the motor. The motor will then start and drive the reciprocating screw to start rotating, so that the cleaning frame connected to the reciprocating screw can move up and down along a predetermined track. During this movement, the cleaning frame fits tightly to the outside of the heat exchange tube, especially for the side that contacts the high-temperature flue gas for deep cleaning. Through the effects of physical friction and brushing, the cleaning frame can effectively remove dust, dirt and other impurities on the surface of the heat exchange tube, so that the dust falls off the surface of the heat exchange tube. This cleaning step is very important, as it can ensure that the surface of the heat exchange tube remains clean, thereby preventing dust or other impurities from accumulating and blocking the transfer of heat, thereby affecting the normal working efficiency and performance of the heat exchange tube. Through such a design, not only the service life of the heat exchange tube is extended, but also the efficient and stable operation of the entire heat exchange system is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a stereogram of an embodiment of the present invention; Figure 2 It is a schematic diagram of the structure inside the furnace body of the present invention; Figure 3 is a schematic diagram of a cross-sectional structure of the heat exchange mechanism of the present invention from a top view angle; Figure 4 It is a structural schematic diagram of the cleaning mechanism of the present invention; Figure 5 It is a structural schematic diagram of the collection mechanism of the present invention; Figure 6 It is a structural schematic diagram of the blowing mechanism of the present invention.

[0024] Description of reference numerals: 1. Furnace body; 11. Base; 12. Reciprocating screw rod; 13. Top cover; 14. Shell; 15. Inlet pipe 1; 16. Outlet pipe 1; 17. Solenoid valve; 18. Traction pipe; 2. Heat exchange mechanism; 21. Connecting pipe; 22. Transport pipe; 23. Heat exchange pipe; 24. Water inlet pipe; 25. Water outlet pipe; 3. Cleaning mechanism; 31. Cleaning frame; 32. Motor; 33. Magnet 1; 4. Collecting mechanism; 41. Mounting frame; 42. Reset spring; 43. Collecting block; 44. Support block; 45. Sealing ring; 46. Magnet 2; 5. Blowing mechanism; 51. Elastic airbag; 52. Magnet 3; 53. Outlet pipe 2; 54. Inlet pipe 2; 55. One-way valve. DETAILED DESCRIPTION

[0025] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples. Example

[0026] The following is a further detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments. Figures 1 to 6 , this application provides a rotary kiln waste heat boiler with automatic ash cleaning function, please refer to Figure 1 and Figure 2 , including a furnace body 1, and also including: a heat exchange mechanism 2 arranged inside the furnace body 1, the heat exchange mechanism 2 is used to exchange heat with the high-temperature flue gas entering the rotary kiln waste heat boiler; a cleaning mechanism 3 arranged outside the heat exchange mechanism 2, the cleaning mechanism 3 is used to clean the heat exchange mechanism 2; a collecting mechanism 4 arranged on the bottom surface of the furnace body 1, the collecting mechanism 4 is used to collect the cleaned dust; a blowing mechanism 5 arranged inside the collecting mechanism 4, the blowing mechanism 5 is used to blow the dust of the collecting mechanism 4 away from the device.

[0027] Specifically, first, after the high-temperature flue gas enters the furnace body 1, it will flow through the heat exchange mechanism 2 for efficient heat exchange. Subsequently, the cleaning mechanism 3 is started, which will clean the surface of the heat exchange mechanism 2, effectively scrape off and collect the dust accumulated on the heat exchange mechanism 2 to the collection mechanism 4. Immediately afterwards, the blowing mechanism 5 will be started to completely blow the dust in the collection mechanism 4 away from the entire device. During the heat exchange process, when the high-temperature flue gas passes through the heat exchange mechanism 2, it will transfer the heat it carries to other media such as water or air, etc., to achieve effective utilization of heat. The design of the cleaning mechanism 3 takes into account the dust problem that will accumulate in the heat exchange mechanism 2 during long-term operation. By starting it regularly or on demand, the heat exchange mechanism 2 is ensured to be clean, thereby maintaining its efficient heat exchange performance. The collection mechanism 4 is responsible for temporarily storing the cleaned dust, and the blowing mechanism 5 further ensures that the dust is completely removed, avoiding pollution to the internal environment of the device and negative effects on the heat exchange efficiency. Thereby improving the stability and efficiency of the entire heat exchange system, thereby achieving the purpose of energy saving.

[0028] Please refer to Figure 1 , Figure 2 and Figure 3 The furnace body 1 includes a base 11, the upper end of the base 11 is fixedly connected to a shell 14, one side of the shell 14 is fixedly connected to an air inlet pipe 15, the side of the shell 14 away from the air inlet pipe 15 is fixedly connected to an air outlet pipe 16, the outer sides of the air outlet pipe 16 and the air inlet pipe 15 are fixedly connected to a solenoid valve 17, the heat exchange mechanism 2 includes two connecting pipes 21 fixedly connected to the side of the shell 14 close to the air outlet pipe 16, the two connecting pipes 21 penetrate and are fixedly connected to the shell 14, one end of the two connecting pipes 21 penetrating the shell 14 is fixedly connected to a transport pipe 22, one of the transport pipes 22 is fixedly connected to a water inlet pipe 24, the other transport pipe 22 is fixedly connected to a water outlet pipe 25, and a plurality of heat exchange pipes 23 are fixedly connected between the water outlet pipe 25 and the water inlet pipe 24.

[0029] Specifically, in the working process of the heat exchanger, first, the operator will open the solenoid valves 17 configured on the outside of the air inlet pipe 15 and the air outlet pipe 16, which provide guarantees for the subsequent gas flow. Then, the high-temperature flue gas is smoothly introduced into the interior of the shell 14 through the air inlet pipe 15. At the same time, the cold water is accurately transported to the interior of the heat exchange tube 23 through the water inlet pipe 24. In this process, the high-temperature flue gas is fully in contact with the heat exchange tube 23, efficiently transferring heat to the cold water in the tube, causing it to quickly heat up and become hot water. Finally, the heated hot water is stably transported to the required equipment through the water outlet pipe 25, achieving energy conservation and efficient utilization.

[0030] Please refer to Figure 1 and Figure 4The cleaning mechanism 3 includes a top cover 13 fixedly connected to the upper end of the shell 14, a reciprocating screw 12 is fixedly connected to the lower end of the top cover 13, three traction tubes 18 are fixedly connected to the lower end of the top cover 13, the outer side of the reciprocating screw 12 is threadedly connected to a cleaning frame 31, the cleaning frame 31 is slidably connected to the three traction tubes 18, the top end of the reciprocating screw 12 passes through and is rotatably connected to the top cover 13, one end of the reciprocating screw 12 passing through the top cover 13 is fixedly connected to a motor 32, and a magnet 33 is fixedly connected to the bottom surface of the cleaning frame 31.

[0031] Specifically, when the heat exchange tube 23 needs to be cleaned and maintained, the operator will start the motor 32. The motor 32 will then start and drive the reciprocating screw 12 to start rotating, so that the cleaning frame 31 connected to the reciprocating screw 12 can move up and down along the predetermined track. During this movement, the cleaning frame 31 fits tightly to the outside of the heat exchange tube 23, especially for the side that contacts the high-temperature flue gas for deep cleaning. Through the effects of physical friction and brushing, the cleaning frame 31 can effectively remove dust, dirt and other impurities on the surface of the heat exchange tube 23, so that the dust falls off the surface of the heat exchange tube 23. This cleaning step is very important, as it can ensure that the surface of the heat exchange tube 23 remains clean, thereby preventing dust or other impurities from accumulating and blocking the transfer of heat, thereby affecting the normal working efficiency and performance of the heat exchange tube 23. Through such a design, not only the service life of the heat exchange tube 23 is extended, but also the efficient and stable operation of the entire heat exchange system is guaranteed.

[0032] Please refer to Figure 2 and Figure 5 The collecting mechanism 4 includes a mounting frame 41 fixedly connected to the inner wall of the outer shell 14, a return spring 42 is fixedly connected to the lower end of the mounting frame 41, a support block 44 is fixedly connected to the lower end of the return spring 42, a collecting block 43 is fixedly connected to the top of the support block 44, a magnet 46 is fixedly connected to the lower end of the collecting block 43, a sealing ring 45 is fixedly connected to the inner wall of the mounting frame 41, and the bottom surface of the mounting frame 41 is in contact with the top surface of the collecting block 43.

[0033] Specifically, when the cleaning frame 31 slides down along the set trajectory, its edge will fit closely to the outside of the heat exchange tube 23, and the dust attached to the surface of the heat exchange tube 23 will be effectively scraped off by physical scraping. The scraped dust then falls onto the collection block 43, ensuring that the dust will not fly around or reattach to the heat exchange tube 23. At the same time, the magnet 1 33 at the lower end of the cleaning frame 31 also slides down. When the magnet 1 33 approaches the magnet 2 46 installed on the collection block 43, due to the magnetic repulsion between the two, the magnet 1 33 will give the magnet 2 46 a downward thrust. This thrust causes the collection block 43 to slide down until the collection block 43 is completely free from the restraint of the mounting frame 41. At this time, inclined grooves are specially opened on both sides of the collecting block 43 near the heat exchange tube 23. The design of these inclined grooves allows the dust accumulated on the collecting block 43 to slide smoothly from the inclined grooves, avoiding the accumulation of dust on the collecting block 43. When the cleaning frame 31 moves upward, the repulsion between magnet 1 33 and magnet 2 46 disappears, and then the reset spring 42 drives the collecting block 43 to reset, thereby sealing the outer shell 14, thereby ensuring the efficient operation of the entire heat exchange device and avoiding the adverse effects of dust accumulation on the operation of the device.

[0034] Please refer to Figure 6 The blowing mechanism 5 includes an elastic airbag 51 fixedly connected to the upper end of the base 11, a magnet three 52 is fixedly connected to the upper end of the elastic airbag 51, an air outlet pipe two 53 is fixedly connected to the side of the elastic airbag 51 close to the collecting block 43, an air inlet pipe two 54 is fixedly connected to the side of the elastic airbag 51 away from the collecting block 43, and a one-way valve 55 is fixedly connected to the outer sides of the air outlet pipe two 53 and the air inlet pipe two 54.

[0035] Specifically, when the collection block 43 slides down smoothly along the preset track, a strong magnetic repulsion is generated between the built-in magnet 2 46 of the collection block 43 and the magnet 3 52 located below it. This repulsive force promotes the downward movement of the collection block 43, so that the magnet 3 52 of the elastic airbag 51 will push the elastic airbag 51 to slide down together after being repelled by the magnet 2 46 of the collection block 43. As the elastic airbag 51 slides down, the gas will be quickly blown out from the air outlet pipe 2 53. This airflow is directed to the chute area opened on the collection block 43, and the dust remaining in the chute is completely cleaned by the flushing effect of the airflow. This design not only ensures the effective removal of dust, but also avoids the secondary accumulation of dust, thereby ensuring the efficiency and thoroughness of the entire cleaning process.

[0036] Working principle: In the working process of the heat exchanger, first, the operator will open the solenoid valves 17 configured on the outside of the air inlet pipe 15 and the air outlet pipe 16, which provide a guarantee for the subsequent gas flow. Then, the high-temperature flue gas is smoothly introduced into the shell 14 through the air inlet pipe 15, and at the same time, the cold water is accurately transported to the inside of the heat exchange tube 23 through the water inlet pipe 24. In this process, the high-temperature flue gas is fully in contact with the heat exchange tube 23, and the heat is efficiently transferred to the cold water in the tube, so that it quickly heats up and becomes hot water. Finally, these heated hot waters are stably transported to the required equipment through the water outlet pipe 25. When the heat exchange tube 23 needs to be cleaned and maintained, the operator will start the motor 32. The motor 32 is then started and drives the reciprocating screw 12 to start rotating, so that the cleaning frame 31 connected to the reciprocating screw 12 can move up and down along the predetermined track. During this movement, the cleaning frame 31 fits tightly against the outside of the heat exchange tube 23, especially for deep cleaning of the side that contacts the high-temperature flue gas. Through physical friction and scrubbing, the cleaning frame 31 can effectively remove dust, dirt and other impurities on the surface of the heat exchange tube 23, so that these dusts fall off the surface of the heat exchange tube 23. This cleaning step is very important, which can ensure that the surface of the heat exchange tube 23 remains clean. When the cleaning frame 31 slides down along the set trajectory, its edge will fit tightly against the outside of the heat exchange tube 23, and the dust attached to the surface of the heat exchange tube 23 will be effectively scraped off by physical scraping. The scraped dust then falls onto the collection block 43, ensuring that the dust will not fly around or reattach to the heat exchange tube 23. At the same time, the magnet 1 33 at the lower end of the cleaning frame 31 also slides down. When the magnet 1 33 approaches the magnet 2 46 installed on the collection block 43, due to the magnetic repulsion between the two, the magnet 1 33 will give the magnet 2 46 a downward thrust. This thrust causes the collection block 43 to slide down until the collection block 43 is completely free from the restraint of the mounting frame 41. At this time, the collection block 43 is specially provided with inclined grooves on both sides close to the heat exchange tube 23. The design of these inclined grooves allows the dust accumulated on the collection block 43 to slide smoothly from the inclined grooves, avoiding the accumulation of dust on the collection block 43. When the collection block 43 slides down smoothly along the preset track, a strong magnetic repulsion is generated between the magnet 2 46 built into the collection block 43 and the magnet 3 52 located below it. This repulsive force promotes the downward movement of the collection block 43, so that the magnet 3 52 of the elastic airbag 51 is subjected to the repulsive force of the magnet 2 46 of the collection block 43, and will push the elastic airbag 51 to slide down together. As the elastic airbag 51 slides down, the gas will be blown out quickly from the outlet pipe 2 53. This airflow is directed to the inclined groove area opened on the collection block 43, and the dust remaining in the inclined groove is completely cleaned by the flushing effect of the airflow.

[0037] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A rotary kiln waste heat boiler with automatic ash cleaning function, comprising a furnace body (1); characterized in that: Also includes; A heat exchange mechanism (2) arranged inside the furnace body (1), the heat exchange mechanism (2) being used to exchange heat with high-temperature flue gas entering the rotary kiln waste heat boiler; a cleaning mechanism (3) disposed outside the heat exchange mechanism (2), the cleaning mechanism (3) being used to clean the heat exchange mechanism (2); A collecting mechanism (4) arranged on the bottom surface of the furnace body (1), the collecting mechanism (4) being used to collect the cleaned dust; An air blowing mechanism (5) is arranged inside the collecting mechanism (4), and the air blowing mechanism (5) is used to blow dust from the collecting mechanism (4) away from the device.

2. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 1, characterized in that: The furnace body (1) comprises a base (11), the upper end of the base (11) is fixedly connected to a shell (14), one side of the shell (14) is fixedly connected to an air inlet pipe (15), a side of the shell (14) away from the air inlet pipe (15) is fixedly connected to an air outlet pipe (16), and the outer sides of the air outlet pipe (16) and the air inlet pipe (15) are fixedly connected to a solenoid valve (17).

3. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 1, characterized in that: The heat exchange mechanism (2) comprises two connecting pipes (21) fixedly connected to a side of the outer shell (14) close to an air outlet pipe (16); the two connecting pipes (21) penetrate through and are fixedly connected to the outer shell (14); and one end of the two connecting pipes (21) penetrating through the outer shell (14) is fixedly connected to a transport pipe (22).

4. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 3 is characterized in that: One of the transport pipes (22) is fixedly connected to a water inlet pipe (24), and the other transport pipe (22) is fixedly connected to a water outlet pipe (25), and a plurality of heat exchange pipes (23) are fixedly connected between the water outlet pipe (25) and the water inlet pipe (24).

5. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 1, characterized in that: The cleaning mechanism (3) comprises a top cover (13) fixedly connected to the upper end of the outer shell (14); a reciprocating screw rod (12) is fixedly connected to the lower end of the top cover (13); three traction tubes (18) are fixedly connected to the lower end of the top cover (13); a cleaning frame (31) is threadedly connected to the outer side of the reciprocating screw rod (12); and the cleaning frame (31) is slidably connected to the three traction tubes (18).

6. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 5, characterized in that: The top end of the reciprocating screw rod (12) passes through and is rotatably connected to the top cover (13); one end of the reciprocating screw rod (12) passing through the top cover (13) is fixedly connected to a motor (32); and the bottom surface of the cleaning frame (31) is fixedly connected to a magnet 1 (33).

7. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 1, characterized in that: The collecting mechanism (4) comprises a mounting frame (41) fixedly connected to the inner wall of the outer shell (14); a return spring (42) is fixedly connected to the lower end of the mounting frame (41); a support block (44) is fixedly connected to the lower end of the return spring (42); a collecting block (43) is fixedly connected to the top end of the support block (44); and a second magnet (46) is fixedly connected to the lower end of the collecting block (43).

8. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 7, characterized in that: A sealing ring (45) is fixedly connected to the inner wall of the installation frame (41), and the bottom surface of the installation frame (41) is in contact with the top surface of the collection block (43).

9. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 1, characterized in that: The blowing mechanism (5) comprises an elastic airbag (51) fixedly connected to the upper end of the base (11), a third magnet (52) being fixedly connected to the upper end of the elastic airbag (51), and a second air outlet pipe (53) being fixedly connected to a side of the elastic airbag (51) close to the collecting block (43).

10. The rotary kiln waste heat boiler with automatic ash cleaning function according to claim 9, characterized in that: A second air inlet pipe (54) is fixedly connected to the side of the elastic air bag (51) away from the collecting block (43), and a one-way valve (55) is fixedly connected to the outer sides of the second air outlet pipe (53) and the second air inlet pipe (54).

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