Sludge drying rotary kiln capable of automatically compensating and sealing

Abstract

The invention discloses an automatic compensation sealing sludge drying rotary kiln, and relates to the technical field of sludge drying rotary kilns.The automatic compensation sealing sludge drying rotary kiln comprises a base plate and a block removing assembly, a base is arranged above the base plate, and the block removing assembly is arranged on one side of the base; and the block removing assembly comprises sliding grooves, sliding blocks, telescopic rods, an outer cylinder, a supporting rod, a buffering cavity, a buffering spring, a scraping plate, an air outlet pipe, an air supply pipe and a discharging opening, the sliding grooves are symmetrically formed in one side of the base, the sliding blocks are connected into the sliding grooves in a clamped mode, and the telescopic rods are connected to one sides of the sliding blocks. When the device is used, the inner wall of the device can be synchronously cleaned, sludge is prevented from caking or even bonding in the device in the drying process, meanwhile, after the device is abraded to a certain degree, the device can be automatically adjusted, so that sealing between components is kept, smoke leakage is avoided, in the drying process, the sludge can be preheated, and the drying efficiency is improved. And the waste heat of the flue gas is used for assisting sludge drying.

Description

Technical Field

[0001] The invention relates to the technical field of sludge drying rotary kilns, in particular to a sludge drying rotary kiln with automatic compensation sealing. Background Art

[0002] The sludge drying rotary kiln is a device used to treat sludge and achieve sludge reduction and stabilization through high-temperature heat treatment. Its working principle is similar to that of the rotary kiln used in cement or lime production, but it is specially designed to treat sludge with high moisture content to achieve the purpose of reducing sludge volume, sterilizing, and improving its subsequent disposal characteristics (such as incineration, land use or landfill). The application of automatic compensation sealing technology in the sludge drying rotary kiln is mainly to solve the sealing problems that may occur during the operation of the rotary kiln, ensure that the high temperature environment in the kiln is not destroyed, and prevent the infiltration of external air and the leakage of internal smoke and dust, thereby improving energy efficiency, reducing pollution and ensuring safe and stable operation of the equipment.

[0003] When the existing sludge drying rotary kiln is in use, the sludge inside it may agglomerate and adhere to the inside of the device during the drying process, making it difficult to clean and reducing the drying efficiency.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a sludge drying rotary kiln with automatic compensation sealing is proposed. Summary of the invention

[0005] The object of the present invention is to provide a sludge drying rotary kiln with automatic compensating seal to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sludge drying rotary kiln with automatic compensation sealing, comprising a chassis and a block removal assembly, a base is arranged above the chassis, the block removal assembly is arranged on one side of the base, the block removal assembly comprises a slide groove, a slider, a telescopic rod, an outer cylinder, a support rod, a buffer cavity, a buffer spring, a scraper, an air outlet pipe, an air supply pipe and a discharge port, a slide groove is symmetrically arranged on one side of the base, and a slider is engaged and connected in the slide groove, a telescopic rod is connected to one side of the slider, and an end of the slider away from the slide groove is connected to the outer cylinder, a support rod is connected to the upper part of the outer cylinder, and a buffer cavity is arranged in the middle part of the support rod, a buffer spring is connected in the buffer cavity, and a scraper is connected to the other end of the buffer spring, one end of the outer cylinder is connected to the air outlet pipe, and an air supply pipe is arranged on the inner side of the air outlet pipe, and a discharge port is opened on one side of the lower part of the outer cylinder.

[0007] Furthermore, the slider is slidably connected to the base through a slide groove, the scraper is elastically connected to the buffer cavity through a buffer spring, and the scraper is slidably connected to the support rod through the buffer cavity, the buffer springs are distributed in an array in the buffer cavity, and the scrapers are tightly fitted.

[0008] Furthermore, a sealing ring is provided on the inner side of the outer cylinder, and a rotating cylinder is connected to the inner side of the sealing ring. A protrusion is connected to the inner wall of the rotating cylinder, and a rotating ring is rotatably connected to the side of the rotating cylinder away from the sealing ring. The protrusions are distributed in an array at equal distances around the rotating cylinder, and micropores are opened on the surface of the rotating cylinder.

[0009] Furthermore, a sealing groove is provided on one side of the rotating ring close to the outer cylinder, and a tooth groove is provided in the middle of the rotating ring. The rotating ring is rotatably connected to the outer cylinder through the sealing groove, and the rotating cylinder is rotatably connected to the outer cylinder through the sealing ring and the rotating ring.

[0010] Furthermore, a discharge trough is provided at the lower part of the base, and a feeding belt is provided in the discharge trough. A motor is connected to the top of the base, and a driving wheel is connected to one end of the motor. The driving wheel is meshed with the rotating ring through a tooth groove.

[0011] Furthermore, air inlets are symmetrically arranged on both sides of the lower part of the outer tube, and an air inlet cover is arranged outside the air inlet. A slide rail is opened on one side of the air inlet cover, and a slide plate is slidably engaged with the slide rail.

[0012] Furthermore, a feed bin is connected to the other side of the base, and a connecting port is provided on the lower wall of the feed bin, and the feed bin is connected to the discharge chute through the connecting port.

[0013] Furthermore, a feed port is opened on one side of the upper wall of the feed bin, and a guide plate is arranged below the feed port, a guide pipe is connected below the guide plate, and the guide plate is inclined relative to the feed bin, and the guide pipe is in contact with the inner wall of the swivel.

[0014] Furthermore, a smoke exhaust port is provided on the other side of the upper wall of the feed bin, and a smoke exhaust pipe is connected above the smoke exhaust port. A heat absorption groove is provided in the smoke exhaust pipe, and the heat absorption groove is spirally shaped with respect to the smoke exhaust pipe.

[0015] Furthermore, one end of the heat absorption tank is connected to an air pump through a pipeline, and the other end of the heat absorption tank is connected to an air supply pipe. The air supply pipe is a three-way pipe, and the end of the air supply pipe away from the heat absorption tank passes through the slide plate and enters the air intake hood.

[0016] The present invention provides a sludge drying rotary kiln with automatic compensation sealing, which has the following beneficial effects: when in use, the inner wall of the device can be cleaned synchronously to prevent sludge from agglomerating or even sticking in the device during the drying process; at the same time, after the device has a certain wear, the device can be automatically adjusted to maintain the seal between the components to prevent smoke leakage; and during the drying process, the sludge can be preheated, and the waste heat of the smoke can be used to assist in sludge drying.

[0017] 1. When the present invention is in use, the motor can drive the driving wheel to rotate, thereby driving the rotating ring to drive the rotating drum to rotate in the outer drum through the tooth groove, and the scraper will be pressed against the inner wall of the rotating drum under the action of the buffer spring, so that when the rotating drum rotates, the scraper can scrape off the mud blocks adhering to the inner wall of the rotating drum to prevent them from sticking to the inner wall of the rotating drum, and during the rotation of the rotating drum, the protrusions on the inner wall of the rotating drum can turn over and stir the sludge entering the rotating drum, break up the sludge and mix it evenly, avoid its agglomeration and improve the drying efficiency at the same time, when the protrusion contacts the scraper, the protrusion can apply force to the scraper through its own inclined surface, press the scraper into the buffer cavity and compress the buffer spring, so that the scraper will not hinder the movement of the protrusion and clean the protrusion, and when the outer drum is in the sealing position When the part inside the groove is worn too much, the telescopic rod can drive the outer cylinder to move toward the rotating ring, so as to maintain the sealing of the sealing groove and prevent smoke from leaking from the sealing groove. During the movement of the outer cylinder, the support rod will drive the scraper to move with the outer cylinder. The scraper is arranged in a close fit so that after the outer cylinder moves, it can still be pressed against the inner wall of the rotating cylinder under the action of the buffer spring to ensure the block removal effect of the scraper. When the outer cylinder moves, the air supply pipe can maintain communication with the inside of the outer cylinder through the air outlet pipe. In summary, when in use, the inner wall of the device can be cleaned simultaneously to prevent sludge from agglomerating or even sticking in the device during the drying process. At the same time, after a certain amount of wear occurs in the device, the device can be automatically adjusted to maintain the seal between the components and prevent smoke leakage.

[0018] 2. When the present invention is in use, after pouring the sludge into the feed bin from the feed port, the sludge will slide along the guide plate into the guide pipe, and then flow into the drum along the guide pipe. At the same time, hot air is sent from the air supply pipe into the drum through the air outlet pipe to pyrolyze and dry the sludge. After the pyrolysis is completed, the sludge slides into the outer cylinder along the inclined drum, and then enters the discharge trough from the discharge port and falls onto the feeding belt. The feeding belt sends the pyrolyzed sludge out of the base from the other side of the discharge trough. The sludge is cooled during transportation, and part of the flue gas that enters the discharge trough together with the sludge The hot air during cooling can be brought into the feed bin from the connecting port, the sludge can be preheated through the guide pipe, and under the guidance of the guide plate, the sludge can be discharged from the feed bin from the smoke exhaust port together with the smoke entering the guide pipe from the rotating drum. After the smoke enters the guide pipe from the rotating drum, the guide plate can block and guide the smoke to prevent the smoke from pushing the sludge out of the feed bin from the feed port or the smoke from leaving the feed bin from the feed port. In summary, when in use, the smoke can be prevented from leaving the feed port and the heat from the smoke and sludge cooling can be used to preheat the sludge to be dried.

[0019] 3. When the present invention is in use, the air pump can send outside air into the heat absorption tank, and after the smoke enters the smoke exhaust pipe, the heat of the high-temperature smoke can be transferred to the heat absorption tank through the inner wall of the smoke exhaust pipe, thereby heating the air sent into the heat absorption tank by the air pump, and the heated air enters the air intake hood from the heat absorption tank through the air delivery pipe, and then enters the outer cylinder from the air inlet. While keeping the drum warm, it can enter the drum through the micropores on the surface of the drum, thereby increasing the oxygen content in the drum and thus improving the drying efficiency, and can prevent the sludge in the drum from leaking from the micropores to between the outer cylinder and the drum, and the hot air After entering the drum, the temperature inside the drum will not decrease, thus ensuring the drying efficiency. When the sealing ring supports the rotation of the drum, it can seal the drum and the outer drum to prevent hot air from directly entering the air intake section of the outer drum. When delivering air, the slide plate can seal the air intake hood through the slide rail to prevent air leakage. When the outer drum moves with the air intake hood, the air delivery pipe can drive the slide plate to move in the slide rail to keep the slide plate sealed to the air intake hood to prevent air leakage. In summary, when in use, the waste heat of the high-temperature flue gas can be used to insulate the drum, and external oxygen can be delivered into the drum to improve the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall cross-sectional three-dimensional structure of a sludge drying rotary kiln with automatic compensation sealing according to the present invention; Figure 2 It is a schematic diagram of the cross-sectional front view of a sludge drying rotary kiln with automatic compensation seal of the present invention; Figure 3 It is a schematic diagram of a half-cut three-dimensional exploded structure of a support rod of a sludge drying rotary kiln with automatic compensation sealing according to the present invention; Figure 4 It is a schematic diagram of a half-section three-dimensional structure of a rotary drum of a sludge drying rotary kiln with automatic compensation seal according to the present invention; Figure 5 It is a schematic diagram of a half-cut three-dimensional exploded structure of a base of a sludge drying rotary kiln with automatic compensation sealing according to the present invention; Figure 6 It is a schematic diagram of the three-dimensional exploded structure of an air inlet hood of a sludge drying rotary kiln with automatic compensation seal according to the present invention; Figure 7 The present invention is a schematic diagram of the overall three-dimensional structure of a sludge drying rotary kiln with automatic compensation sealing.

[0021] In the figure: 1. chassis; 2. base; 3. block removing assembly; 301. slide groove; 302. slider; 303. telescopic rod; 304. outer cylinder; 305. support rod; 306. buffer chamber; 307. buffer spring; 308. scraper; 309. air outlet pipe; 310. air supply pipe; 311. discharge port; 4. sealing ring; 5. rotating drum; 6. convex block; 7. rotating ring; 8. sealing groove; 9. tooth groove; 10. discharge trough; 11. feeding belt; 12. motor; 13. driving wheel; 14. air inlet; 15. air inlet hood; 16. slide rail; 17. slide plate; 18. feeding bin; 19. connecting port; 20. feeding port; 21. guide plate; 22. guide pipe; 23. smoke exhaust port; 24. smoke exhaust pipe; 25. heat absorption groove; 26. air pump; 27. air supply pipe. DETAILED DESCRIPTION

[0022] See also Figures 1 to 7 The present invention provides a technical solution: a sludge drying rotary kiln with automatic compensation seal, comprising a chassis 1 and a block removing component 3, a base 2 is arranged above the chassis 1, the block removing component 3 is arranged on one side of the base 2, the block removing component 3 comprises a slide 301, a slider 302, a telescopic rod 303, an outer cylinder 304, a support rod 305, a buffer cavity 306, a buffer spring 307, a scraper 308, an air outlet pipe 309, an air supply pipe 310 and a discharge port 311, a slide 301 is symmetrically arranged on one side of the base 2, and a A slider 302, one side of the slider 302 is connected to a telescopic rod 303, and the end of the slider 302 away from the slide groove 301 is connected to an outer cylinder 304, the upper part of the outer cylinder 304 is connected to a support rod 305, and a buffer cavity 306 is arranged in the middle of the support rod 305, a buffer spring 307 is connected in the buffer cavity 306, and the other end of the buffer spring 307 is connected to a scraper 308, one end of the outer cylinder 304 is connected to an air outlet pipe 309, and an air supply pipe 310 is arranged inside the air outlet pipe 309, and a discharge port 311 is opened on one side of the lower part of the outer cylinder 304.

[0023] See also Figures 1 to 7 The slider 302 is slidably connected to the base 2 through the slide groove 301, the scraper 308 is elastically connected to the buffer cavity 306 through the buffer spring 307, and the scraper 308 is slidably connected to the support rod 305 through the buffer cavity 306, the buffer spring 307 is distributed in an array in the buffer cavity 306, and the scrapers 308 are tightly fitted, a sealing ring 4 is arranged on the inner side of the outer cylinder 304, and a rotating cylinder 5 is connected to the inner side of the sealing ring 4, a protrusion 6 is connected to the inner wall of the rotating cylinder 5, and a rotating ring 7 is rotatably connected to the side of the rotating cylinder 5 away from the sealing ring 4, the protrusions 6 are equidistantly distributed in an array on the rotating cylinder 5, and micropores are provided on the surface of the rotating cylinder 5, a sealing groove 8 is provided on the side of the rotating ring 7 close to the outer cylinder 304, and a tooth groove 9 is provided in the middle of the rotating ring 7, the rotating ring 7 is rotatably connected to the outer cylinder 304 through the sealing groove 8, and the rotating cylinder 5 is rotatably connected to the outer cylinder 304 through the sealing ring 4 and the rotating ring 7; The specific operation is as follows. When in use, the motor 12 can drive the driving wheel 13 to rotate, so that the rotating ring 7 drives the drum 5 to rotate in the outer drum 304 through the tooth groove 9. The scraper 308 will be pressed against the inner wall of the drum 5 under the action of the buffer spring 307. Therefore, when the drum 5 rotates, the scraper 308 can scrape off the mud blocks adhering to the inner wall of the drum 5 to prevent it from sticking to the inner wall of the drum 5. In addition, during the rotation of the drum 5, the protrusions 6 on the inner wall can turn over and stir the sludge entering the drum 5, break up and mix the sludge evenly, avoid its agglomeration and improve the drying efficiency. When the protrusions 6 contact the scraper 308, the protrusions 6 can apply force to the scraper 308 through their own inclined surfaces, press the scraper 308 into the buffer cavity 306 and compress the buffer spring 307, so that the scraper 308 will not hinder the movement of the protrusions 6 and clean the protrusions 6. When the outer drum 304 When the part located in the sealing groove 8 is worn too much, the telescopic rod 303 can drive the outer cylinder 304 to move toward the rotating ring 7, so as to maintain the sealing of the sealing groove 8 and prevent smoke from leaking from the sealing groove 8. During the movement of the outer cylinder 304, the support rod 305 will drive the scraper 308 to move with the outer cylinder 304. The scraper 308 is arranged in a close relationship so that after the outer cylinder 304 moves, it can still be pressed against the inner wall of the rotating cylinder 5 under the action of the buffer spring 307 to ensure the deblocking effect of the scraper 308. When the outer cylinder 304 moves, the air supply pipe 310 can maintain communication with the inside of the outer cylinder 304 through the air outlet pipe 309. In summary, when in use, the inner wall of the device can be cleaned simultaneously to prevent sludge from agglomerating or even sticking in the device during the drying process. At the same time, after a certain amount of wear occurs to the device, the device can be automatically adjusted to maintain the seal between the components and prevent smoke leakage.

[0024] See also Figures 5 to 7A discharge trough 10 is provided at the lower part of the base 2, and a feeding belt 11 is provided in the discharge trough 10. A motor 12 is connected to the top of the base 2, and one end of the motor 12 is connected to a driving wheel 13, and the driving wheel 13 is meshed with the rotating ring 7 through the tooth groove 9. Air inlets 14 are symmetrically provided on both sides of the lower part of the outer cylinder 304, and an air inlet cover 15 is provided on the outer side of the air inlet 14. A slide rail 16 is provided on one side of the air inlet cover 15, and a slide plate 17 is slidably connected in the slide rail 16. A feed bin 18 is connected to the other side of the base 2, and a connecting port 19 is provided on the lower wall of the feed bin 18. The feed bin 18 is connected to the discharge trough 10 through the connecting port 19, and a feed port is provided on one side of the upper wall of the feed bin 18. 20, and a guide plate 21 is arranged below the feed port 20, a guide pipe 22 is connected below the guide plate 21, and the guide plate 21 is inclined with respect to the feed bin 18, the guide pipe 22 is fitted with the inner wall of the rotating ring 7, a smoke exhaust port 23 is opened on the other side of the upper wall of the feed bin 18, and a smoke exhaust pipe 24 is connected above the smoke exhaust port 23, a heat absorption groove 25 is arranged in the smoke exhaust pipe 24, and the heat absorption groove 25 is spiral with respect to the smoke exhaust pipe 24, one end of the heat absorption groove 25 is connected to an air pump 26 through a pipeline, and the other end of the heat absorption groove 25 is connected to an air supply pipe 27, the air supply pipe 27 is a three-way pipe, and the end of the air supply pipe 27 away from the heat absorption groove 25 passes through the slide plate 17 and enters the air inlet hood 15; The specific operation is as follows. When in use, after pouring the sludge from the feed port 20 into the feed bin 18, the sludge will slide along the guide plate 21 into the guide pipe 22, and then flow into the drum 5 along the guide pipe 22. At the same time, hot air is sent from the air supply pipe 310 into the drum 5 through the air outlet pipe 309 to pyrolyze and dry the sludge. After the pyrolysis is completed, the sludge slides into the outer cylinder 304 along the inclined drum 5, and then enters the discharge trough 10 from the discharge port 311 and falls onto the feeding belt 11. The feeding belt 11 sends the pyrolyzed sludge out of the base 2 from the other side of the discharge trough 10. The sludge is cooled during transportation, and part of the flue gas that enters the discharge trough 10 together with the sludge The hot air during cooling can be brought into the feed bin 18 from the connecting port 19, the sludge can be preheated through the guide pipe 22, and under the guidance of the guide plate 21, the sludge can be discharged from the feed bin 18 from the smoke exhaust port 23 together with the smoke entering the guide pipe 22 from the drum 5. After the smoke enters the guide pipe 22 from the drum 5, the guide plate 21 can block and guide the smoke to prevent the smoke from pushing the sludge out of the feed bin 18 from the feed port 20 or the smoke from leaving the feed bin 18 from the feed port 20. In summary, when in use, the smoke can be prevented from leaving the feed port 20 and the heat of the smoke and sludge during cooling can be used to preheat the sludge to be dried. When in use, the air pump 26 can send outside air into the heat absorption groove 25, and after the smoke enters the smoke exhaust pipe 24, the heat of the high-temperature smoke can be transferred to the heat absorption groove 25 through the inner wall of the smoke exhaust pipe 24, thereby heating the air sent into the heat absorption groove 25 by the air pump 26, and the heated air enters the air intake hood 15 from the heat absorption groove 25 through the air supply pipe 27, and then enters the outer cylinder 304 from the air inlet 14. While keeping the rotating drum 5 warm, it can enter the rotating drum 5 through the micropores on the surface of the rotating drum 5, thereby increasing the oxygen content in the rotating drum 5 and thus improving the drying efficiency, and can prevent the sludge in the rotating drum 5 from leaking from the micropores to between the outer cylinder 304 and the rotating drum 5, and after the hot air enters the rotating drum 5 It will not cause the temperature inside the drum 5 to drop, thereby ensuring the drying efficiency. When the sealing ring 4 supports the drum 5 to rotate, it can seal the drum 5 and the outer drum 304 to prevent hot air from directly entering the air intake section of the outer drum 304. When delivering air, the slide plate 17 can seal the air intake hood 15 through the slide rail 16 to prevent air leakage. When the outer drum 304 moves with the air intake hood 15, the air delivery pipe 27 can drive the slide plate 17 to move in the slide rail 16, maintaining the seal of the slide plate 17 on the air intake hood 15 to prevent air leakage. In summary, when in use, the waste heat of the high-temperature flue gas can be used to keep the drum 5 warm, and external oxygen can be delivered into the drum 5 to improve the drying efficiency.

[0025] In summary, when the automatic compensation sealed sludge drying rotary kiln is used, the sludge is first poured into the feed bin 18 from the feed port 20, and then the sludge will slide along the guide plate 21 into the guide pipe 22, and then flow into the drum 5 along the guide pipe 22. At the same time, hot air is sent from the air supply pipe 310 to the drum 5 through the air outlet pipe 309 to pyrolyze and dry the sludge. The motor 12 can drive the driving wheel 13 to rotate, thereby causing the rotating ring 7 to drive the drum 5 to rotate in the outer cylinder 304 through the tooth groove 9. The scraper 308 will be pressed against the inner wall of the drum 5 under the action of the buffer spring 307, so that when the drum 5 rotates, the scraper 308 can scrape off the mud blocks adhered to the inner wall of the drum 5 to prevent them from sticking to the inner wall of the drum 5, and the drum 5 is rotating. During the process, the protrusion 6 on the inner wall can turn over and stir the sludge entering the rotating drum 5, break up and mix the sludge evenly, avoid agglomeration and improve the drying efficiency. When the protrusion 6 contacts the scraper 308, the protrusion 6 can apply force to the scraper 308 through its own inclined surface, press the scraper 308 into the buffer cavity 306 and compress the buffer spring 307, so that the scraper 308 will not hinder the movement of the protrusion 6 and clean the protrusion 6. When the part of the outer cylinder 304 located in the sealing groove 8 is excessively worn, the telescopic rod 303 can drive the outer cylinder 304 to move toward the swivel 7, so as to maintain the sealing of the sealing groove 8 and avoid smoke leakage from the sealing groove 8. During the movement of the outer cylinder 304, the support rod 305 will drive the scraper 308 to move with the outer cylinder 304 The scraper 308 arranged in a close relationship allows the outer cylinder 304 to be pressed against the inner wall of the rotating cylinder 5 under the action of the buffer spring 307 after it moves, thereby ensuring the deblocking effect of the scraper 308. When the outer cylinder 304 moves, the air supply pipe 310 can maintain communication with the inside of the outer cylinder 304 through the air outlet pipe 309. After the pyrolyzed sludge slides into the outer cylinder 304 along the inclined rotating cylinder 5, it can enter the discharge trough 10 from the discharge port 311 and fall onto the feeding belt 11. The feeding belt 11 delivers the pyrolyzed sludge out of the base 2 from the other side of the discharge trough 10. The sludge is cooled during transportation, and part of the flue gas that enters the discharge trough 10 together with the sludge can carry the hot air during cooling and enter the feed bin 18 from the connecting port 19, and the sludge is quenched through the guide pipe 22. The smoke is preheated and, under the guidance of the guide plate 21, is discharged from the feed bin 18 from the smoke exhaust port 23 together with the smoke entering the guide pipe 22 from the rotary drum 5. After the smoke enters the guide pipe 22 from the rotary drum 5, the guide plate 21 can block and guide the smoke to prevent the smoke from pushing the sludge out of the feed bin 18 from the feed port 20 or the smoke from leaving the feed bin 18 from the feed port 20. When in use, the air pump 26 can send outside air into the heat absorption groove 25. After the smoke enters the smoke exhaust pipe 24, the heat of the high-temperature smoke can be transferred to the heat absorption groove 25 through the inner wall of the smoke exhaust pipe 24, thereby heating the air sent into the heat absorption groove 25 by the air pump 26. The heated air enters the air intake hood 15 from the heat absorption groove 25 through the air supply pipe 27, and then enters the outer cylinder 304 from the air intake port 14.While keeping the drum 5 warm, the hot air can enter the drum 5 through the micropores on the surface of the drum 5, increase the oxygen content in the drum 5 and thus improve the drying efficiency, and prevent the sludge in the drum 5 from leaking from the micropores to between the outer drum 304 and the drum 5. After the hot air enters the drum 5, it will not cause the temperature in the drum 5 to drop, thus ensuring the drying efficiency. When the sealing ring 4 supports the drum 5 to rotate, it can seal the drum 5 and the outer drum 304 to prevent the hot air from directly entering the air intake section of the outer drum 304. When delivering air, the slide plate 17 can seal the air intake hood 15 through the slide rail 16 to prevent air leakage. When the outer drum 304 moves with the air intake hood 15, the air delivery pipe 27 can drive the slide plate 17 to move in the slide rail 16 to keep the slide plate 17 sealed to the air intake hood 15 to prevent air leakage.

[0026] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A sludge drying rotary kiln with automatic compensation seal, characterized in that: The invention comprises a chassis (1) and a block removing assembly (3), wherein a base (2) is arranged above the chassis (1), and the block removing assembly (3) is arranged on one side of the base (2), and the block removing assembly (3) comprises a slide groove (301), a slider (302), a telescopic rod (303), an outer cylinder (304), a support rod (305), a buffer chamber (306), a buffer spring (307), a scraper (308), an air outlet pipe (309), an air supply pipe (310) and a discharge port (311), wherein a slide groove (301) is symmetrically arranged on one side of the base (2), and a slider (302) is engaged and connected in the slide groove (301), and the slider (302) is 02) is connected to a telescopic rod (303) on one side, and an end of the slider (302) away from the slide groove (301) is connected to an outer cylinder (304), the upper part of the outer cylinder (304) is connected to a support rod (305), and a buffer cavity (306) is provided in the middle of the support rod (305), a buffer spring (307) is connected in the buffer cavity (306), and the other end of the buffer spring (307) is connected to a scraper (308), one end of the outer cylinder (304) is connected to an air outlet pipe (309), and an air supply pipe (310) is provided inside the air outlet pipe (309), and a discharge port (311) is provided on one side of the lower part of the outer cylinder (304).

2. The sludge drying rotary kiln with automatic compensation seal according to claim 1, characterized in that: The slider (302) is slidably connected to the base (2) via the slide groove (301), the scraper (308) is elastically connected to the buffer cavity (306) via the buffer spring (307), and the scraper (308) is slidably connected to the support rod (305) via the buffer cavity (306), the buffer spring (307) is distributed in an array in the buffer cavity (306), and the scrapers (308) are tightly fitted to each other.

3. The sludge drying rotary kiln with automatic compensation seal according to claim 1, characterized in that: A sealing ring (4) is provided on the inner side of the outer cylinder (304), and a rotating cylinder (5) is connected to the inner side of the sealing ring (4). A protrusion (6) is connected to the inner wall of the rotating cylinder (5), and a rotating ring (7) is rotatably connected to the side of the rotating cylinder (5) away from the sealing ring (4). The protrusions (6) are distributed in an array at equal intervals on the circumference of the rotating cylinder (5), and micropores are provided on the surface of the rotating cylinder (5).

4. The sludge drying rotary kiln with automatic compensation seal according to claim 3 is characterized in that: A sealing groove (8) is provided on a side of the rotating ring (7) close to the outer cylinder (304), and a tooth groove (9) is provided in the middle of the rotating ring (7); the rotating ring (7) is rotatably connected to the outer cylinder (304) by means of the sealing groove (8), and the rotating cylinder (5) is rotatably connected to the outer cylinder (304) by means of the sealing ring (4) and the rotating ring (7).

5. The sludge drying rotary kiln with automatic compensation seal according to claim 4, characterized in that: A discharge trough (10) is provided at the bottom of the base (2), and a feeding belt (11) is provided in the discharge trough (10). A motor (12) is connected to the top of the base (2), and a driving wheel (13) is connected to one end of the motor (12). The driving wheel (13) meshes with the rotating ring (7) through a tooth groove (9).

6. The sludge drying rotary kiln with automatic compensation seal according to claim 1, characterized in that: Air inlets (14) are symmetrically arranged on both sides of the lower part of the outer cylinder (304), and an air inlet cover (15) is arranged outside the air inlet (14). A slide rail (16) is provided on one side of the air inlet cover (15), and a slide plate (17) is slidably engaged with the slide rail (16).

7. The sludge drying rotary kiln with automatic compensation seal according to claim 6, characterized in that: A feed bin (18) is connected to the other side of the base (2), and a communication port (19) is provided on the lower wall of the feed bin (18), and the feed bin (18) is connected to the discharge trough (10) via the communication port (19).

8. The sludge drying rotary kiln with automatic compensation seal according to claim 7, characterized in that: A feed port (20) is provided on one side of the upper wall of the feed bin (18), and a guide plate (21) is provided below the feed port (20). A guide pipe (22) is connected below the guide plate (21), and the guide plate (21) is inclined relative to the feed bin (18). The guide pipe (22) is in contact with the inner wall of the rotating ring (7).

9. The sludge drying rotary kiln with automatic compensation seal according to claim 7, characterized in that: A smoke exhaust port (23) is provided on the other side of the upper wall of the feed bin (18), and a smoke exhaust pipe (24) is connected above the smoke exhaust port (23). A heat absorbing groove (25) is provided in the smoke exhaust pipe (24), and the heat absorbing groove (25) is spirally shaped with respect to the smoke exhaust pipe (24).

10. The sludge drying rotary kiln with automatic compensation seal according to claim 9, characterized in that: One end of the heat absorption groove (25) is connected to an air pump (26) via a pipeline, and the other end of the heat absorption groove (25) is connected to an air supply pipe (27). The air supply pipe (27) is a three-way pipe, and the end of the air supply pipe (27) away from the heat absorption groove (25) passes through the slide plate (17) and enters the air intake cover (15).

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