A flue gas dedusting device for lime rotary kiln calcination

Abstract

This invention relates to the field of flue gas dust removal and discloses a flue gas dust removal device for lime rotary kiln calcination, comprising: a first dust removal cylinder, a second dust removal cylinder disposed at one end of the first dust removal cylinder, and a switching gap between the first and second dust removal cylinders for switching the dust removal core; a cleaning structure disposed inside the first dust removal cylinder for cleaning the inner wall of the first dust removal cylinder; by setting up a driving structure, a switching structure, and two switching cylinders, when it is necessary to replace or clean the dust removal core in one of the switching cylinders, the driving switching structure drives the switching mechanism to switch out the corresponding switching cylinder and the dust removal core, while at the same time, the other switching cylinder and the dust removal core are switched to the flue gas treatment position. In this way, when cleaning or replacing the corresponding dust removal core, the other dust removal core can continue to perform dust removal work, making the operation simpler and more convenient, and the dust removal efficiency higher.

Description

Technical Field

[0001] This invention relates to the technical field of flue gas dust removal, and in particular to a flue gas dust removal device for calcination in a lime rotary kiln. Background Technology

[0002] Lime rotary kiln calcination refers to the complete process of producing quicklime by heating limestone at high temperature in a specific industrial device called a "lime rotary kiln". During the calcination process, flue gas is generated, and a flue gas dust removal device is required to remove dust from the generated flue gas. In the existing flue gas dust removal device, the flue gas generated during the calcination process is introduced into the dust removal device, and the dust in the flue gas is removed by the dust removal core inside the device, and then the dust-removed flue gas is discharged. However, when the dust collector core needs to be cleaned or replaced after long-term use, it needs to be removed from the dust collector before cleaning or replacement. This is not only cumbersome, but also requires stopping the dust collection process, which reduces work efficiency. Therefore, there is room for improvement. Summary of the Invention

[0003] To address the problems mentioned in the background art, the present invention provides a flue gas dust removal device for lime rotary kiln calcination.

[0004] The present invention provides a flue gas dust removal device for lime rotary kiln calcination, which adopts the following technical solution: A flue gas dust removal device for lime rotary kiln calcination includes: A first dust collector cylinder, with a second dust collector cylinder installed at one end of the first dust collector cylinder, and a switching gap between the first dust collector cylinder and the second dust collector cylinder to switch the dust collector inner core; A cleaning structure is installed inside the first dust collector to clean the inner wall of the first dust collector. An inlet pipe is connected to one end of the first dust collector to introduce the flue gas to be cleaned. The outlet pipe is connected to one end of the second dust collector to discharge the dust-collected flue gas. A switching cylinder, wherein two switching cylinders are disposed between the first dust collector cylinder and the second dust collector cylinder, and a dust collector inner core is installed inside the switching cylinder; A clamping structure is provided inside the switching cylinder to clamp the replaced dust collector core. The rotating extrusion structure is mounted on the switching cylinder, and inside the switching cylinder, it drives the clamping structure to clamp the dust collector core. A switching structure is installed on the first and second dust collectors to automatically switch the switching cylinder and replace the dust collector core. The drive structure is installed on the second dust collector, and the drive switching structure switches automatically. A sealing structure is provided inside the first dust collector and the second dust collector, and after switching the switching cylinder, a sealed connection is formed between the switching cylinder, the first dust collector, and the second dust collector; A reverse-moving structure is installed on the first and second dust collectors to drive the two sets of sealing structures to move closer to the moving seal and move away from the moving seal. The transmission structure is located between the reverse movement structure and the drive structure. When the drive structure switches the dust removal inner core back and forth, it automatically drives the sealing structure to release the seal and perform the sealing connection work.

[0005] As one implementation, the switching structure includes: A first fixing block is set on the first dust collector and the second dust collector. A switching shaft rotates through the two first fixing blocks. A connecting block is fixedly sleeved in the middle of the switching shaft. The two switching cylinders are respectively connected to the two ends of the connecting block.

[0006] As one implementation, the driving structure includes: An electric push rod is installed on the first fixed block on the right side, and a second fixed block is set on the second dust collector near the right end. A first transmission rod is connected between the second fixed block and the first fixed block. A first transverse groove is formed at the right end of the first transmission rod, a first spiral groove is formed on the first transmission rod that connects to the first transverse groove, and a fourth transverse groove is formed at one end of the first spiral groove on the first transmission rod. A first transmission ring is movably sleeved on the first transmission rod, and a first insert rod is fixedly inserted into the first transmission ring. One end of the first insert rod is slidably inserted into the first transverse groove, and one end of the output shaft of the electric push rod is connected to the first transmission ring.

[0007] As one embodiment, the sealing structure includes: A through-hole is formed at one end of the first dust collector and the second dust collector that are close to each other, and an inner groove is formed on the groove wall at one end of the through-hole. The second abutting cylinder moves through the through groove. One end of the second abutting cylinder is connected to the first abutting cylinder inserted into the inner groove. A first sealing ring is provided on the groove wall at one end of the inner groove. One end of the first abutting cylinder abuts against the first sealing ring. The switching cylinder has a first sealing groove on both ends, and a second sealing ring is provided on the groove wall of the first sealing groove. One end of the second pressing cylinder abuts against the second sealing ring.

[0008] As one embodiment, the reverse movement structure includes: A third fixing block is connected to the first dust collector and the second dust collector respectively. A bidirectional screw rod rotates through the two third fixing blocks. The left and right threads of the bidirectional screw rod are in opposite directions. A limiting rod is connected between the two third fixing blocks. Two movable blocks are movably sleeved on the limiting rod. The movable blocks have threaded grooves for the bidirectional screw rod to pass through. Both of the two movable blocks are connected to an L-shaped strip that moves through the third fixed block on one side away from each other. The inner groove wall is provided with a through groove for inserting one end of the L-shaped strip. One end of the L-shaped strip is fixedly connected to the first clamping cylinder.

[0009] As one embodiment, the transmission structure includes: A second transmission rod is connected to the right end of the second dust collector, and one end of the second transmission rod is fixedly connected to one end of a bidirectional screw. A second spiral groove is provided on the right end of the second transmission rod, a second transverse groove is provided on the second transmission rod to connect one end of the second spiral groove, a third spiral groove is provided on the second transmission rod to connect one end of the second transverse groove, and a third transverse groove is provided on the second transmission rod to connect one end of the third spiral groove. The second spiral groove has the opposite spiral direction to the third spiral groove; A second transmission ring is movably sleeved on the second transmission rod, and a second insert rod is fixedly inserted into the second transmission ring. One end of the second insert rod is slidably disposed in the second spiral groove. The second transmission ring is fixedly connected to the first transmission ring via a drive plate.

[0010] As one implementation, the cleanup structure includes: An electric telescopic rod is installed at one end of the first dust collector cylinder. The output shaft of the electric telescopic rod is inserted into the first dust collector cylinder, and a cleaning ring is installed at one end. The side of the cleaning ring is close to the inner wall of the first dust collector cylinder, and the inner wall of the cleaning ring is a concave arc-shaped surface.

[0011] As one embodiment, the clamping structure includes: Multiple bottom grooves are formed on the inner wall of the switching cylinder, and a clamping block is provided in each bottom groove. A cylindrical groove is formed in the switching cylinder corresponding to each bottom groove. A through rod moves through the cylindrical groove, and one end of the through rod is fixedly connected to the clamping block. A fixing ring is fixedly sleeved on the through rod, and a spring is sleeved on the through rod. The two ends of the spring are respectively connected to the fixing ring and the groove wall at one end of the cylindrical groove.

[0012] As one embodiment, the rotating extrusion structure includes: An annular groove is formed on the switching cylinder, and a rotating ring is rotatably arranged in the annular groove, with a rotating ring arranged between the two rotating rings. The outside of the switching cylinder is provided with a groove corresponding to each cylindrical slot. A pressure block is provided in the groove. The pressure block is connected to the top of the through rod. An anti-slip pad is provided on the pressure block. The inner wall of the rotating ring is provided with extrusion strips at the locations where the pressure blocks are not opened, and one end of each extrusion strip is inclined.

[0013] In summary, the present invention has the following beneficial technical effects: This invention, by setting up a driving structure, a switching structure, and two switching cylinders, allows the driving switching structure to switch out the corresponding switching cylinder and dust collector core when it is necessary to replace or clean the dust collector core in one of the switching cylinders. At the same time, the other switching cylinder and dust collector core are switched to the flue gas treatment position. In this way, when the corresponding dust collector core is cleaned or replaced, the other dust collector core can continue to perform dust removal work, making the operation simpler and more convenient, and the dust removal efficiency higher. This invention, by setting up a clamping structure and a rotating extrusion structure, utilizes the rotation of the rotating ring on the rotating extrusion structure within the switching cylinder to loosen or clamp the dust collector core, making the disassembly or replacement of the dust collector core simpler and more convenient. This invention, by setting up a sealing structure, a reverse movement structure, and a transmission structure, allows the sealing structure to automatically release the seal before switching while the driving structure drives the switching structure to switch, in conjunction with the reverse movement structure, so that the switching can proceed smoothly. After switching, it can automatically reseal, ensuring airtightness. The structure is simple and the function is practical. By incorporating a cleaning structure, this invention can automatically clean the dust accumulated on the inner wall of the first dust collector during the switching process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a flue gas dust removal device for lime rotary kiln calcination in an embodiment of the present invention. Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged view of the structure at point A; Figure 3 This is an embodiment of the present invention. Figure 1 Enlarged view of the structure at point B; Figure 4 This is a schematic diagram of the internal structure of the first dust collector in an embodiment of the present invention; Figure 5 This is an embodiment of the present invention. Figure 4 Enlarged view of the structure at point C; Figure 6 This is a schematic diagram of the structure of the switching cylinder in an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of the switching cylinder in an embodiment of the present invention; Figure 8 This is an embodiment of the present invention. Figure 7 Enlarged view of the structure at point D.

[0015] Explanation of reference numerals in the attached drawings: 1. First dust collector cylinder; 2. Second dust collector cylinder; 3. Inlet pipe; 4. Outlet pipe; 5. First fixing block; 6. Switching shaft; 7. Switching cylinder; 8. Connecting block; 9. Electric push rod; 10. First transmission rod; 11. First transverse groove; 12. First spiral groove; 13. First transmission ring; 14. First insert rod; 15. Second fixing block; 16. Inner groove; 17. First clamping cylinder; 18. Second clamping cylinder; 19. Through groove; 20. First sealing ring; 21. First sealing groove; 22. Second sealing ring; 23. Third fixing block; 24. L-shaped strip 25. Through groove; 26. Double-acting screw; 27. Moving block; 28. Second transmission rod; 29. ​​Second insertion rod; 30. Second transmission ring; 31. Driving plate; 32. Second spiral groove; 33. Second transverse groove; 34. Third spiral groove; 35. Third transverse groove; 36. Electric telescopic rod; 37. Cleaning ring; 38. Cylindrical groove; 39. Fixing ring; 40. Spring; 41. Through rod; 42. Pressing block; 43. Bottom groove; 44. Pressure block; 45. Anti-slip pad; 46. Extrusion strip; 47. Rotating ring; 48. Rotating ring; 49. Annular groove; 50. Groove. Detailed Implementation

[0016] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0017] This invention discloses a flue gas dust removal device for lime rotary kiln calcination. (Refer to...) Figures 1-8A dust removal device for flue gas in a rotary kiln for lime calcination includes: a first dust collector 1, with a second dust collector 2 at one end of the first dust collector 1, and a switching gap between the first dust collector 1 and the second dust collector 2 for switching the dust collector core; a cleaning structure disposed inside the first dust collector 1 for cleaning the inner wall of the first dust collector 1; an inlet pipe 3 connected to one end of the first dust collector 1 for introducing the flue gas to be dusted; an outlet pipe 4 connected to one end of the second dust collector 2 for discharging the dust-treated flue gas; a switching cylinder 7, with two switching cylinders 7 disposed between the first dust collector 1 and the second dust collector 2, and the dust collector core installed inside the switching cylinder 7; a clamping structure disposed inside the switching cylinder 7 for clamping the replaced dust collector core; and a rotating extrusion structure disposed on the switching cylinder 7 for... The system includes: an internal clamping structure to clamp the dust collector core; a switching structure, located on the first dust collector cylinder 1 and the second dust collector cylinder 2, to automatically switch the switching cylinder 7 and replace the dust collector core; a drive structure, installed on the second dust collector cylinder 2, to drive the switching structure to switch automatically; a sealing structure, located inside the first dust collector cylinder 1 and the second dust collector cylinder 2, to seal the connection between the switching cylinder 7, the first dust collector cylinder 1, and the second dust collector cylinder 2 after switching the switching cylinder 7; a reverse movement structure, located on the first dust collector cylinder 1 and the second dust collector cylinder 2, to move the two sets of sealing structures closer to the moving seal and further away from the moving switch; and a transmission structure, located between the reverse movement structure and the drive structure, to automatically drive the sealing structure to release the seal and perform sealing connection work before and after the drive structure switches the dust collector core.

[0018] See Figure 1 and Figure 3 The switching structure includes: a first fixing block 5 set on the first dust collector 1 and the second dust collector 2, a switching shaft 6 rotatably passing through the two first fixing blocks 5, a connecting block 8 fixedly sleeved in the middle of the switching shaft 6, and two switching cylinders 7 respectively connected to the two ends of the connecting block 8. The drive structure includes: an electric push rod 9 mounted on a first fixed block 5 on the right side; a second fixed block 15 located near the right end of the second dust collector 2; a first transmission rod 10 connecting the second fixed block 15 and the first fixed block 5; a first transverse groove 11 formed on the right end of the first transmission rod 10; a first spiral groove 12 connecting the first transverse groove 11; and a fourth transverse groove at one end of the first spiral groove 12; a first transmission ring 13 movably sleeved on the first transmission rod 10; a first insert rod 14 fixedly inserted into the first transmission ring 13; one end of the first insert rod 14 slidingly inserted into the first transverse groove 11; and one end of the output shaft of the electric push rod 9 connected to the first transmission ring 13. When the dust collector core in one of the switching cylinders 7 needs to be replaced or cleaned after long-term use, the first fixed block 5 is activated. The electric push rod 9 drives the first transmission ring 13 to move on the first transmission rod 10. The first transmission ring 13 drives one end of the first insertion rod 14 to slide from the first transverse groove 11 into the first spiral groove 12. By using the pressure of one end of the first insertion rod 14 on the groove wall of the first spiral groove 12, the first transmission rod 10 and the switching shaft 6 are rotated half a turn as a whole, so that the corresponding dust removal inner core and one of the switching cylinders 7 are rotated out from between the first dust removal cylinder 1 and the second dust removal cylinder 2. At the same time, the other switching cylinder 7 and the dust removal inner core are switched to between the first dust removal cylinder 1 and the second dust removal cylinder 2. In this way, when the corresponding dust removal inner core is replaced or cleaned, the other switching cylinder 7 and the dust removal inner core can continue to perform flue gas treatment. This is not only simple and convenient to operate, but also ensures the normal operation of flue gas treatment during the cleaning process, thus improving work efficiency.

[0019] See Figures 1-5 The sealing structure includes: a through-hole groove 19 formed at one end of the first dust collector 1 and the second dust collector 2, close to each other; an inner groove 16 formed on one end wall of the through-hole groove 19; a second pressing cylinder 18 moving through the through-hole groove 19; one end of the second pressing cylinder 18 connected to a first pressing cylinder 17 inserted into the inner groove 16; a first sealing ring 20 provided on one end wall of the inner groove 16; and one end of the first pressing cylinder 17 abutting against the first sealing ring 20; a first sealing groove 21 formed on both ends of the switching cylinder 7; a second sealing ring 22 provided on the wall of the first sealing groove 21; and one end of the second pressing cylinder 18 abutting against the second sealing ring 22; and a reverse movement structure package. Includes: a third fixed block 23 connected to the first dust collector 1 and the second dust collector 2 respectively; a bidirectional screw 26 rotatably passes through the two third fixed blocks 23; the left and right threads of the bidirectional screw 26 are opposite in direction; a limiting rod is connected between the two third fixed blocks 23; two movable blocks 27 are movably sleeved on the limiting rod; the movable blocks 27 have threaded grooves for the bidirectional screw 26 to pass through; L-shaped strips 24 that movably pass through the third fixed blocks 23 are connected to the two movable blocks 27 on opposite sides; a through groove 25 is provided on the inner groove 16 for one end of the L-shaped strip 24 to be inserted; one end of the L-shaped strip 24 is fixedly connected to the first clamping cylinder 17. The transmission structure includes: a second transmission rod 28 connected to the right end of the second dust collector 2, one end of the second transmission rod 28 being fixedly connected to one end of a bidirectional screw 26; a second spiral groove 32 is formed on the right end of the second transmission rod 28; a second transverse groove 33 is formed on the second transmission rod 28 communicating with one end of the second spiral groove 32; a third spiral groove 34 is formed on the second transmission rod 28 communicating with one end of the second transverse groove 33; a third transverse groove 35 is formed on the second transmission rod 28 communicating with one end of the third spiral groove 34; the spiral directions of the second spiral groove 32 and the third spiral groove 34 are opposite; the second A second transmission ring 30 is movably sleeved on the transmission rod 28, and a second insert rod 29 is fixedly inserted into the second transmission ring 30. One end of the second insert rod 29 is slidably disposed in the second spiral groove 32. The second transmission ring 30 is fixedly connected to the first transmission ring 13 through a driving plate 31. When the first transmission ring 13 drives the first insert rod 14 to slide in the first transverse groove 11, the driving plate 31 drives the second transmission ring 30 to move on the second transmission rod 28. The second transmission ring 30 drives one end of the second insert rod 29 to slide in the second spiral groove 32, and the second insert rod 29 is used to move the first... The compression of the spiral groove 32 pushes the second transmission rod 28 to rotate, thereby driving the bidirectional screw 26 to rotate. The two moving blocks 27 move away from each other on the rotating bidirectional screw 26. Through the L-shaped strip 24, they drive one end of the two second pressing cylinders 18 to be pulled out from the first sealing groove 21 at the end of the switching cylinder 7, releasing the seal between the first dust collector cylinder 1 and the second dust collector cylinder 2. Then, when one end of the first insert rod 14 slides in the first spiral groove 12, one end of the second insert rod 29 slides in the second transverse groove 33, allowing the switching cylinder 7 to smoothly move from the first dust collector cylinder 1 to the second dust collector cylinder 2. When the dust collector 1 rotates out between the first dust collector 1 and the second dust collector 2, and when another switching cylinder 7 switches to the space between the first dust collector 1 and the second dust collector 2 to continue dust removal, one end of the first insert rod 14 slides in the fourth transverse groove to limit the two switching cylinders 7 after switching. At this time, one end of the second insert rod 29 slides in the third spiral groove 34, driving the bidirectional screw 26 to rotate in the opposite direction. The two moving blocks 27 move towards each other, driving the two second pressing cylinders 18 to move and insert into the corresponding first sealing groove 21, and press against the second sealing ring 22 to continue the sealing work.

[0020] See Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 8The cleaning structure includes: an electric telescopic rod 36 installed at one end of the first dust collector 1; the output shaft of the electric telescopic rod 36 is inserted into the first dust collector 1, and a cleaning ring 37 is installed at one end; the side of the cleaning ring 37 is pressed against the inner wall of the first dust collector 1; the inner wall of the cleaning ring 37 has a concave arc shape; when the two switching cylinders 7 rotate to a horizontal state, the electric telescopic rod 36 is activated, driving the cleaning ring 37 to move inside the first dust collector 1, scraping off the dust adhering to the inner wall of the first dust collector 1, thus automatically cleaning the first dust collector 1; and locking. The structure includes: multiple bottom grooves 43 formed on the inner wall of the switching cylinder 7, each bottom groove 43 being provided with a pressing block 42; a cylindrical groove 38 corresponding to each bottom groove 43 being formed in the switching cylinder 7, through which a through rod 41 movably passes, one end of the through rod 41 being fixedly connected to the pressing block 42; a fixing ring 39 is fixedly sleeved on the through rod 41, and a spring 40 is sleeved on the through rod 41, with both ends of the spring 40 connected to the fixing ring 39 and one end of the groove wall of the cylindrical groove 38 respectively; the rotating extrusion structure includes: the switching cylinder 7 An annular groove 49 is opened on the upper part of the switching cylinder 7, and a rotating ring 48 is rotatably arranged in the annular groove 49. A rotating ring 47 is arranged between two rotating rings 48. A groove 50 is opened on the outside of the switching cylinder 7 corresponding to each cylindrical groove 38. A pressure block 44 is arranged in the groove 50 and connected to the top of the through rod 41. An anti-slip pad 45 is arranged on the pressure block 44. An extrusion strip 46 is arranged on the inner wall of the rotating ring 47 corresponding to the position where there is no pressure block 44. One end of the extrusion strip 46 is inclined. When changing the dust collector inner core, the rotating ring 47 is rotated on the switching cylinder 7. The extrusion strip 46 is disengaged from the pressure block 44. Under the elastic force of the spring 40, the clamping block 42 is pushed into the bottom groove 43, releasing the clamping work on the dust collector core. The dust collector core is removed from the switching cylinder 7 for cleaning or replacement. When reinstalling the dust collector core on the switching cylinder 7, the dust collector core is inserted into the switching cylinder 7, and the rotating ring 47 is rotated in the opposite direction. This causes the inclined surface of one end of the extrusion strip 46 to press against the pressure block 44, pushing the clamping block 42 to move and press against the dust collector core, thus clamping and fixing the dust collector core on the switching cylinder 7.

[0021] The implementation principle of a flue gas dust removal device for lime rotary kiln calcination according to an embodiment of the present invention is as follows: When the dust removal inner core in one of the switching cylinders 7 needs to be replaced or cleaned after long-term use, the electric push rod 9 on the first fixed block 5 is activated to drive the first transmission ring 13 to move on the first transmission rod 10. The first transmission ring 13 drives one end of the first insert rod 14 to slide from the first transverse groove 11 into the first spiral groove 12. By using the compression of the first insert rod 14 against the groove wall of the first spiral groove 12, the first transmission rod 10 and the switching shaft 6 are rotated half a turn as a whole, thus moving the corresponding dust removal inner core and one of the switching cylinders 7 as a whole from the first dust removal cylinder 1 and the first... Simultaneously, another switching cylinder 7 and the dust collector inner core switch between the first dust collector 1 and the second dust collector 2. This allows the other switching cylinder 7 and the dust collector inner core to continue flue gas treatment while the corresponding dust collector inner core is being replaced or cleaned. This not only simplifies and facilitates operation but also ensures the normal operation of flue gas treatment during cleaning, improving work efficiency. Furthermore, when the first transmission ring 13 drives the first insertion rod 14 to slide in the first transverse groove 11, it drives the second transmission ring 30 to move on the second transmission rod 28 via the driving plate 31. The second transmission ring 30 then drives one end of the second insertion rod 29... Sliding in the second spiral groove 32, the second insertion rod 29 pushes the second transmission rod 28 to rotate by pressing against the groove wall of the second spiral groove 32, thereby driving the bidirectional screw 26 to rotate. The two moving blocks 27 move away from each other on the rotating bidirectional screw 26. Through the L-shaped strip 24, they drive the two second pressing cylinders 18 to be pulled out from the first sealing groove 21 at the end of the switching cylinder 7, releasing the seal between the first dust collector 1 and the second dust collector 2. Then, when one end of the first insertion rod 14 slides in the first spiral groove 12, one end of the second insertion rod 29 slides in the second transverse groove 33, so that the switching cylinder 7 can smoothly... The first switching cylinder 14 moves out from between the first dust collector 1 and the second dust collector 2. When another switching cylinder 7 switches to between the first dust collector 1 and the second dust collector 2 to continue dust removal, one end of the first insert rod 14 slides in the fourth transverse groove to limit the two switching cylinders 7 after switching. At this time, one end of the second insert rod 29 slides in the third spiral groove 34, driving the bidirectional screw 26 to rotate in the opposite direction. The two moving blocks 27 move towards each other, driving the two second pressing cylinders 18 to move and insert into the corresponding first sealing groove 21, and press against the second sealing ring 22 to continue the sealing work. The operation is simple and convenient, and the work efficiency is higher.

[0022] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A flue gas dust removal device for lime rotary kiln calcination, characterized in that, include: A first dust collector (1) is provided at one end of a second dust collector (2), and a switching gap is left between the first dust collector (1) and the second dust collector (2) to switch the dust collector core; A cleaning structure is installed inside the first dust collector (1) to clean the inner wall of the first dust collector (1); The inlet pipe (3) is connected to one end of the first dust collector (1) and the flue gas to be dusted is introduced into it; The outlet pipe (4) is connected to one end of the second dust collector (2) to discharge the flue gas after dust removal; A switching cylinder (7) is provided, with two switching cylinders (7) disposed between the first dust collector (1) and the second dust collector (2), and a dust collector core is installed inside the switching cylinder (7); A clamping structure is provided inside the switching cylinder (7) to clamp the replaced dust collector core; The rotating extrusion structure is set on the switching cylinder (7), and the clamping structure inside the switching cylinder (7) clamps the dust removal core; The switching structure is set on the first dust collector (1) and the second dust collector (2), and the switching cylinder (7) is automatically switched to replace the dust collector inner core; The drive structure is installed on the second dust collector (2), and the drive switching structure switches automatically; A sealing structure is provided inside the first dust collector (1) and the second dust collector (2). After switching the switching cylinder (7), a sealing connection is formed between the switching cylinder (7), the first dust collector (1) and the second dust collector (2). The reverse moving structure is set on the first dust collector (1) and the second dust collector (2), which drives the two sets of sealing structures to move closer to the moving seal and move away from the moving seal. The transmission structure is located between the reverse movement structure and the drive structure. When the drive structure switches the dust removal inner core back and forth, it automatically drives the sealing structure to release the seal and perform the sealing connection work.

2. The flue gas dust removal device for lime rotary kiln calcination according to claim 1, characterized in that, The switching structure includes: A first fixing block (5) is set on the first dust collector (1) and the second dust collector (2). The two first fixing blocks (5) rotate through the switching shaft (6). A connecting block (8) is fixedly sleeved in the middle of the switching shaft (6). The two switching cylinders (7) are respectively connected to the two ends of the connecting block (8).

3. The flue gas dust removal device for lime rotary kiln calcination according to claim 2, characterized in that: The driving structure includes: An electric push rod (9) is installed on the first fixed block (5) on the right side, and a second fixed block (15) is provided on the second dust collector (2) near the right end. A first transmission rod (10) is connected between the second fixed block (15) and the first fixed block (5). A first transverse groove (11) is provided on the right end of the first transmission rod (10), a first spiral groove (12) is provided on the first transmission rod (10) to connect the first transverse groove (11), and a fourth transverse groove is provided on one end of the first spiral groove (12) on the first transmission rod (10). A first transmission ring (13) is movably sleeved on the first transmission rod (10), and a first insert rod (14) is fixedly inserted into the first transmission ring (13). One end of the first insert rod (14) is slidably inserted into the first transverse groove (11), and one end of the output shaft of the electric push rod (9) is connected to the first transmission ring (13).

4. The flue gas dust removal device for lime rotary kiln calcination according to claim 3, characterized in that: The sealing structure includes: A through-hole (19) is formed at one end of the first dust collector (1) and the second dust collector (2) close to each other, and an inner groove (16) is formed on the groove wall at one end of the through-hole (19). The second abutting cylinder (18) moves through the through groove (19). One end of the second abutting cylinder (18) is connected to the first abutting cylinder (17) inserted into the inner groove (16). A first sealing ring (20) is provided on the groove wall at one end of the inner groove (16). One end of the first abutting cylinder (17) abuts against the first sealing ring (20). The switching cylinder (7) has a first sealing groove (21) on both ends. A second sealing ring (22) is provided on the groove wall of the first sealing groove (21). One end of the second pressing cylinder (18) is pressed against the second sealing ring (22).

5. A flue gas dust removal device for lime rotary kiln calcination according to claim 4, characterized in that: The reverse movement structure includes: A third fixing block (23) is connected to the first dust collector (1) and the second dust collector (2) respectively. A bidirectional screw (26) rotates through the two third fixing blocks (23). The left and right threads of the bidirectional screw (26) are opposite in direction. A limiting rod is connected between the two third fixing blocks (23). Two moving blocks (27) are movably sleeved on the limiting rod. The moving blocks (27) have threaded grooves for the bidirectional screw (26) to pass through. The two movable blocks (27) are connected to an L-shaped strip (24) that moves through the third fixed block (23) on one side away from each other. The inner groove (16) has a through groove (25) for inserting one end of the L-shaped strip (24). One end of the L-shaped strip (24) is fixedly connected to the first abutting cylinder (17).

6. A flue gas dust removal device for lime rotary kiln calcination according to claim 5, characterized in that: The transmission structure includes: A second transmission rod (28) is connected to the right end of the second dust collector (2), and one end of the second transmission rod (28) is fixedly connected to one end of a bidirectional screw (26); The second transmission rod (28) has a second spiral groove (32) on its upper right end, a second transverse groove (33) on its upper right end that connects to one end of the second spiral groove (32), a third spiral groove (34) on its upper right end that connects to one end of the second transverse groove (33), and a third transverse groove (35) on its upper right end that connects to one end of the third spiral groove (34). The second spiral groove (32) has the opposite spiral direction to the third spiral groove (34); A second transmission ring (30) is movably sleeved on the second transmission rod (28), and a second insert rod (29) is fixedly inserted into the second transmission ring (30). One end of the second insert rod (29) is slidably disposed in the second spiral groove (32). The second transmission ring (30) is fixedly connected to the first transmission ring (13) via a drive plate (31).

7. The flue gas dust removal device for lime rotary kiln calcination according to claim 1, characterized in that: The cleanup structure includes: An electric telescopic rod (36) is installed at one end of the first dust collector (1). The output shaft of the electric telescopic rod (36) is inserted into the first dust collector (1) and a cleaning ring (37) is installed at one end. The side of the cleaning ring (37) is attached to the inner wall of the first dust collector (1). The inner wall of the cleaning ring (37) is a concave arc surface.

8. A flue gas dust removal device for lime rotary kiln calcination according to claim 1, characterized in that: The clamping structure includes: Multiple bottom grooves (43) are formed on the inner wall of the switching cylinder (7), and a clamping block (42) is provided in each bottom groove (43). A cylindrical groove (38) is formed in the switching cylinder (7) corresponding to each bottom groove (43). A through rod (41) moves through the cylindrical groove (38), and one end of the through rod (41) is fixedly connected to the clamping block (42). A fixing ring (39) is fixedly sleeved on the through rod (41), and a spring (40) is sleeved on the through rod (41). The two ends of the spring (40) are respectively connected to the fixing ring (39) and the groove wall at one end of the cylindrical groove (38).

9. A flue gas dust removal device for lime rotary kiln calcination according to claim 8, characterized in that: The rotary extrusion structure includes: An annular groove (49) is provided on the switching cylinder (7), and a rotating ring (48) is rotatably arranged in the annular groove (49), and a rotating ring (47) is arranged between the two rotating rings (48). The switching cylinder (7) has a groove (50) corresponding to each cylindrical groove (38) on its outside. A pressure block (44) is provided in the groove (50). The pressure block (44) is connected to the top of the through rod (41). An anti-slip pad (45) is provided on the pressure block (44). The inner wall of the rotating ring (47) is provided with extrusion strips (46) corresponding to the unopened pressure block (44), and one end of the extrusion strip (46) is inclined.

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