Environment-friendly dust removal device of maerz kiln

Abstract

The application belongs to the technical field of dust removal devices, and discloses an environment-friendly dust removal device for a Maerz kiln, which comprises a rack, a dust removal box and a cooling box fixed on the rack and in communication with each other, a plurality of dust removal bags arranged in the dust removal box, an air inlet chute arranged on the cooling box and used for communicating the cooling box with a smoke outlet of the Maerz kiln, an air exhaust assembly arranged outside the rack and in communication with the dust removal box, a cooling mechanism arranged in the cooling box, the cooling mechanism comprising a pipe network assembly and a cooling pipe row, the pipe network assembly being in communication with an external cooling liquid system and supplying liquid to the cooling pipe row, the cooling pipe row being provided with a plurality of groups and being uniformly distributed along a flue gas path, and a cleaning mechanism arranged in the cooling box and used for simultaneously cleaning sundries on surfaces of the plurality of groups of cooling pipe rows. The application introduces flue gas of the Maerz kiln through the air inlet chute, cools the flue gas through the cooling pipe row, guarantees the cooling effect through the cleaning mechanism, and then discharges the flue gas from the dust removal box through the air exhaust assembly, so that efficient cooling and dust removal and purification of the flue gas are realized, and the service life of the dust removal bag is prolonged.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, and in particular to an environmentally friendly dust removal device for a Maeltz kiln. Background Technology

[0002] In the field of limestone forging, the Maeltz kiln is widely used due to its unique double-chamber structure and efficient calcination capacity. During the production and operation of the Maeltz kiln, the calcination process generates a large amount of high-temperature flue gas containing pollutants such as dust. If this flue gas is directly emitted, it will not only cause serious environmental pollution but also waste recyclable resources. Therefore, effective dust removal and purification treatment is necessary.

[0003] Currently, most dust removal devices for Maerz kiln flue gas use filter bags for filtration. However, the flue gas discharged from Maerz kiln is at a high temperature. When the high-temperature flue gas directly enters the dust removal device and comes into contact with the filter bags, it can easily cause the filter bags to age and be damaged due to the high temperature, greatly shortening the service life of the filter bags and increasing the maintenance cost and replacement frequency of the equipment.

[0004] To address the impact of high temperatures on filter bags, some dust collection systems incorporate cooling structures to lower the temperature of the flue gas. However, existing cooling structures often suffer from insufficient cooling, failing to reduce the high-temperature flue gas to a suitable operating temperature range for the filter bags, thus still causing some damage. Furthermore, over long-term use, some cooling structures tend to accumulate condensate and dust on their surfaces, further affecting cooling efficiency and failing to provide a stable low-temperature working environment for the filter bags. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an environmentally friendly dust removal device for a Maeltz kiln, which effectively cools the high-temperature flue gas discharged from the Maeltz kiln, preventing damage to subsequent dust collection bags due to excessively high flue gas temperature.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an environmentally friendly dust removal device for a Maeltz kiln, comprising a frame, on which a dust removal box and a cooling box are fixed and interconnected. Multiple dust removal bags are installed inside the dust removal box. An air inlet hopper for connecting the cooling box to the exhaust port of the Maeltz kiln is installed on the cooling box. An exhaust assembly connected to the dust removal box is installed outside the frame. A cooling mechanism is installed inside the cooling box. The cooling mechanism includes a pipe network assembly and cooling pipe rows. The pipe network assembly is connected to an external coolant system and supplies coolant to the cooling pipe rows. Multiple sets of cooling pipe rows are evenly distributed along the flue gas path. A cleaning mechanism for simultaneously cleaning debris from the surfaces of multiple sets of cooling pipe rows is also installed inside the cooling box.

[0007] By adopting the above technical solution, the air inlet hopper introduces the flue gas generated during the calcination process of the Maeltz kiln into the cooling box. The external coolant transported by the pipeline assembly is delivered to multiple sets of cooling pipes, thereby fully cooling the high-temperature flue gas and preventing damage to the subsequent dust collector bags due to excessively high flue gas temperature. This allows the dust collector bags to continue dust removal work in a low-temperature environment, which helps extend the service life of the dust collector bags. At the same time, the cleaning mechanism in the cooling box can clean the condensate, dust and other debris on the surface of multiple sets of cooling pipes simultaneously, ensuring the cooling effect of the cooling pipes. After cooling and dust removal, the flue gas is discharged from the dust collector box by the exhaust assembly, ultimately achieving the purpose of efficient cooling and dust removal purification of the flue gas discharged from the Maeltz kiln.

[0008] Furthermore, the air outlet of the air inlet hopper is lower than the pipe network assembly. The pipe network assembly includes a main water inlet pipe connected to the external coolant system, a branch water inlet pipe fixed to and connected to the main water inlet pipe, a horizontal water inlet pipe fixed to and connected to the branch water inlet pipe, a main water outlet pipe connected to the external coolant system, a branch water outlet pipe fixed to and connected to the main water outlet pipe, and a horizontal water outlet pipe fixed to and connected to the branch water outlet pipe. The number of cooling pipe groups is equal to the number of main water outlet pipes and the number of horizontal water outlet pipes. Each cooling pipe group includes a U-shaped pipe body connected to both the horizontal water inlet pipe and the horizontal water outlet pipe. Each cooling pipe group has multiple U-shaped pipe bodies. Multiple U-shaped pipe bodies in the same cooling pipe group are located on the same plane parallel to the flue gas path.

[0009] By adopting the above technical solution, the coolant provided by the external coolant system flows sequentially along the main inlet pipe, branch inlet pipe, horizontal inlet pipe, U-shaped pipe, horizontal outlet pipe, branch outlet pipe, and main outlet pipe, and finally flows back to the external coolant system. Multiple U-shaped pipes work together to quickly cool the introduced flue gas from the Maeltz kiln, so as to prevent the high-temperature flue gas from accelerating the aging of the dust collector bags and thus extend the service life of the dust collector bags.

[0010] Furthermore, the cooling pipe bank also includes U-shaped fins fixed between two adjacent U-shaped pipe bodies.

[0011] By adopting the above technical solution, the U-shaped fins increase the contact area between the cooling pipe and the high-temperature flue gas. When the coolant flows along the U-shaped pipe, it can efficiently absorb the heat of the flue gas through the U-shaped fins, further improving the cooling effect of the flue gas.

[0012] Furthermore, the cooling chamber is equipped with a horizontal plate located between the inlet horizontal pipe and the outlet horizontal pipe. The cleaning mechanism includes an installation component, a cleaning component, and a drive component. The installation component is set on the horizontal plate, and the number of installation components is equal to the number of cooling pipe groups, with each group corresponding to the other. The installation component includes a connecting rod fixed to the bottom of the horizontal plate, a U-shaped seat fixed to the lower end of the connecting rod, and a sleeve that passes through both sides of the U-shaped seat and is rotatably connected. The sleeve is equipped with a spiral protrusion. Each set of installation components has two sleeves that are mirror images of each other. The cooling chamber is also equipped with a rotating rod located between two vertical plates of the inner U-shaped fins. The rotating rod passes through the sleeve and is clearance-fitted. The side wall of the rotating rod is equipped with a spiral groove that is threadedly connected to the spiral protrusion at the position corresponding to the sleeve. The rotating rod has two sleeves that are mirror images of each other. The drive component includes a lifting unit for driving the horizontal plate to rise and fall, and a drive unit for driving the rotating rod to reciprocate along the axial direction of the sleeve. The cleaning component is set on the sleeve and is used to clean debris from the U-shaped tube and U-shaped fins.

[0013] By adopting the above technical solution, when the cleaning component moves to the vertical section of the U-shaped fins, it is in a horizontal state. The lifting unit controls the synchronous lifting and lowering of the connecting rod, U-shaped seat, sleeve, rotating rod, and cleaning component by driving the horizontal plate to rise and fall. In this way, the cleaning component cleans the debris on the U-shaped tube and U-shaped fins, thereby ensuring the cooling effect of the U-shaped tube and U-shaped fins on the flue gas. When the cleaning component moves to the U-shaped curved section of the U-shaped fins, the drive unit drives the rotating rod to reciprocate along the axial direction of the sleeve. Since the spiral groove on the rotating rod is threadedly connected to the spiral protrusion inside the sleeve, the sleeve can rotate back and forth, allowing the cleaning component to clean the U-shaped curved section of the U-shaped tube and U-shaped fins.

[0014] Furthermore, the cleaning assembly includes two sets of cleaning units symmetrically arranged about the U-shaped seat. Each set of cleaning units has two sets and is symmetrically distributed on both sides of the U-shaped tube. Each set of cleaning units includes a mounting plate fixed to the outer wall of the sleeve and a flexible scraper fixed to the mounting plate for abutting against both the outer wall of the U-shaped tube and the side wall of the U-shaped fins. The mounting plates of the two sets of cleaning assemblies are fixed with abutting posts on the side closest to each other, and the abutting posts on the two sets of mounting plates are staggered.

[0015] By adopting the above technical solution, when the lifting unit drives the horizontal plate to rise and fall synchronously so that the mounting plates rise and fall synchronously, the flexible scraper simultaneously cleans the vertical sections of the U-shaped tube and U-shaped fins. When the drive unit drives the rotating rod to reciprocate along the axial direction of the sleeve, the sleeve rotates synchronously, thereby allowing the flexible scraper to simultaneously clean the U-shaped curved sections of the U-shaped tube and U-shaped fins. When the flexible scraper moves to the bottom of the U-shaped tube, the two sets of mounting plates approach each other, and the two sets of abutment posts collide with the mounting plates of the opposite set, forming a clapping-like action, shaking off the debris adhering to the mounting plates and the flexible scraper, ensuring the subsequent cleaning effect.

[0016] Furthermore, the drive unit includes a first plate fixed to the inner wall of one side of the cooling box, a first screw rod rotatably connected to and passing through the first plate, a first motor fixed to the first plate and driving the first screw rod to rotate, a first movable plate sleeved on and threadedly connected to the first screw rod, a first push plate fixed to the bottom of the first movable plate, a first block fixed to one end of two rotating rods, a second plate fixed to the inner wall of the other side of the cooling box, a second screw rod rotatably connected to and passing through the second plate, and a first motor fixed to the second plate and driving the second screw rod to rotate. Two motors, a second movable plate sleeved on and threadedly connected to the second screw, a second push plate fixed to the bottom of the second movable plate, and a second block fixed to the other end of the two rotating rods; the sides of the first movable plate and the second movable plate that are far apart from each other abut against the inner walls of the cooling box on both sides respectively; the U-shaped part of the first block is provided with an abutting slope; the first push plate is provided with an inclined surface that cooperates with the abutting slope near its lower end; the upper end of the second push plate is provided with a clearance opening for the second screw to move; and the lower end of the second push plate is provided with a pushing slope at the intersection with the side of the second push plate near the first push plate.

[0017] By adopting the above technical solution, when cleaning the U-shaped curved section of the U-shaped tube and U-shaped fins, the operator only needs to start the first motor, which causes the first movable plate and the first push plate to move synchronously. The inclined surface of the first push plate cooperates with the abutting inclined surface of the first block, causing the first block to drive the rotating rod to move along the axial direction of the sleeve, thereby causing the sleeve to rotate. This allows the mounting plate and the flexible scraper to rotate synchronously, and the flexible scraper cleans the U-shaped curved section of the U-shaped tube and U-shaped fins simultaneously. When the flexible scraper moves to the bottom of the U-shaped tube and needs to return, the operator needs to start the second motor. After the second motor starts, it drives the second movable plate and the second push plate to move synchronously. When the pushing inclined surface of the second push plate abuts the second block, it drives the rotating rod to move along the axial direction of the sleeve and reset. The sleeve rotates in the opposite direction, causing the mounting plate and the flexible scraper to return to the horizontal state, so that the vertical section of the U-shaped tube and U-shaped fins can be cleaned subsequently.

[0018] Furthermore, a connecting plate is fixed to the top of the horizontal plate. The lifting unit includes a fixed plate fixed to the inner wall of the cooling box and parallel to the connecting plate, an electric hydraulic push rod hinged to the inner wall of the cooling box, a movable block hinged to the push rod end of the electric hydraulic push rod, and a scissor-type support frame hinged between the fixed plate and the connecting plate. The fixed plate is provided with an upper through hole. The movable block is hinged to the upper end of the scissor-type support frame. The hinge shaft between the movable block and the scissor-type support frame is slidably engaged with the upper through hole. The connecting plate is provided with a lower through hole for the hinge rod at the bottom of the scissor-type support frame to slide.

[0019] By adopting the above technical solution, when it is necessary to clean the vertical section of the U-shaped tube and U-shaped fins, the staff only needs to start the electric hydraulic push rod, so that the hinge shaft between the movable block and the scissor support frame slides along the upper through hole, thereby causing the scissor support frame to undergo adaptive deformation, and causing the connecting plate and the horizontal plate to complete the lifting and lowering. The cleaning component lifts and lowers synchronously and completes the cleaning work of the vertical section of the U-shaped tube and U-shaped fins.

[0020] Furthermore, a partition is installed near the top of the dust collector, and the dust collector bag is located between the partition and the bottom of the dust collector. Air outlets are provided at the corresponding positions of the partition and the dust collector bag. The exhaust assembly includes an exhaust fan located on one side of the frame and an exhaust duct for connecting the air inlet of the exhaust fan to the dust collector. The air inlet of the exhaust duct is located between the partition and the top of the dust collector.

[0021] By adopting the above technical solution, after the exhaust fan is working, a negative pressure is generated between the top of the dust collector and the top of the partition. The dust-laden gas can first be filtered by the dust collector bag to remove dust. The filtered clean gas enters the space above the partition through the air outlet on the partition and is then discharged through the exhaust pipe, ensuring the cleanliness of the flue gas discharged from the Maerz kiln.

[0022] Furthermore, the bottom of the cooling box is fixed and connected to a first ash hopper, and the bottom of the dust collection box is fixed and connected to a second ash hopper. Both the first and second ash hoppers are equipped with solenoid valves.

[0023] By adopting the above technical solution, the debris generated by the cleaning mechanism from cleaning the surface of the cooling pipe pile falls into the first ash hopper; the dust on the dust collector bag falls into the second ash hopper, so that the staff can clean it in a concentrated manner.

[0024] Furthermore, the dust collection box is equipped with a cleaning component, which includes a main air pipe fixed to the outer wall of the dust collection box and connected to the external high-pressure air supply system, a branch air pipe connected to the main air pipe and extending into the space between the partition and the top wall of the dust collection box, and an air jet pipe fixed to and connected to the bottom of the branch air pipe. The air jet pipe passes through the air outlet and extends into the dust collection bag. The number of air jet pipes is equal to the number of dust collection bags and their positions correspond one-to-one.

[0025] By adopting the above technical solution, after the dust collector bag has been used for a period of time, in order to ensure the continuous filtration effect, the staff only needs to use the external high-pressure air supply system to provide high-pressure airflow to the dust collector bag in sequence through the main air pipe, branch air pipe and jet pipe, so as to blow out the dust covering the dust collector bag. The dust falls into the second dust hopper, which is convenient for the staff to clean.

[0026] In summary, the present invention has the following beneficial effects: 1. This application introduces the high-temperature flue gas generated by the calcination of the Maeltz kiln into a cooling box, and transports coolant to the cooling pipe bank through a pipeline assembly for sufficient cooling, avoiding damage to the dust collector bags due to high temperature and extending the service life of the dust collector bags; the cleaning mechanism can clean the debris on the surface of the cooling pipe bank, ensuring the cooling effect; the cooled and dust-removed flue gas is discharged by the exhaust assembly, achieving the purpose of efficient cooling and dust removal purification of the high-temperature flue gas generated by the Maeltz kiln; 2. In this application, the coolant provided by the external coolant system flows sequentially along the main water inlet pipe, the branch water inlet pipe, the horizontal water inlet pipe, the U-shaped pipe, the horizontal water outlet pipe, the branch water outlet pipe, and the main water outlet pipe, and finally flows back to the external coolant system. Multiple U-shaped pipes work together to quickly cool the introduced flue gas from the Maeltz kiln, so as to prevent the high-temperature flue gas from accelerating the aging of the dust collector bags and thus extend the service life of the dust collector bags. 3. In this application, when the cleaning component moves to the vertical section of the U-shaped fin, it is in a horizontal state. The lifting unit controls the synchronous lifting of the connecting rod, U-shaped seat, sleeve, rotating rod, and cleaning component by driving the horizontal plate to rise and fall. This allows the cleaning component to clean debris from the U-shaped tube and U-shaped fin, thus ensuring the cooling effect of the U-shaped tube and U-shaped fin on the flue gas. When the cleaning component moves to the U-shaped curved section of the U-shaped fin, the drive unit drives the rotating rod to reciprocate along the axial direction of the sleeve. Since the spiral groove on the rotating rod is threadedly connected to the spiral protrusion inside the sleeve, the sleeve can rotate back and forth, allowing the cleaning component to clean the U-shaped curved section of the U-shaped tube and U-shaped fin. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the internal structure of the dust removal box and the cooling box in an embodiment of the present invention; Figure 3 This is a schematic diagram illustrating the structure of the cleaning mechanism in an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the structure of the driving unit in an embodiment of the present invention; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram illustrating the structure of the cleaning unit in an embodiment of the present invention; Figure 7 yes Figure 6 Enlarged view of point B in the middle; Figure 8 yes Figure 3 Enlarged diagram of point C in the middle.

[0028] In the picture: 1. Rack; 2. Dust collector box; 21. Dust collector bag; 22. Partition; 221. Air outlet; 23. Second dust hopper; 3. Cooling box; 31. Air inlet hopper; 32. Horizontal plate; 321. Connecting plate; 3211. Lower through hole; 33. Rotating rod; 331. Spiral groove; 34. First ash outlet hopper; 4. Exhaust system; 41. Exhaust fan; 42. Exhaust duct; 5. Cooling mechanism; 51. Piping assembly; 511. Main inlet pipe; 512. Branch inlet pipe; 513. Horizontal inlet pipe; 514. Main outlet pipe; 515. Branch outlet pipe; 516. Horizontal outlet pipe; 52. Cooling pipe array; 521. U-shaped pipe body; 522. U-shaped fins; 6. Cleaning mechanism; 61. Installation component; 611. Connecting rod; 612. U-shaped seat; 613. Sleeve; 6131. ​​Spiral convex strip; 62. Cleaning component; 621. Cleaning unit; 6211. Mounting plate; 6212. Flexible scraper; 6213. Abutment post; 63. Drive assembly; 631. Lifting unit; 6311. Fixing plate; 63111. Upper through hole; 6312. Electro-hydraulic push rod; 6313. Movable block; 6314. Scissor-type support frame; 632. Drive unit; 6321. First plate; 6322. First screw; 6323. First motor; 6324. First movable plate; 6325. First push plate; 63251. Inclined surface; 6326. First block; 63261. Abutting inclined surface; 6327. Second plate; 6328. Second screw; 6329. Second motor; 6330. Second movable plate; 6331. Second push plate; 63311. Clearing opening; 63312. Pushing inclined surface; 6332. Second block; 7. Cleaning components; 71. Main airway; 72. Bronchus; 73. Jet nozzle; 8. Flexible sleeve. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] like Figure 1-8 As shown in the embodiment of this application, an environmentally friendly dust removal device for a Maeltz kiln is disclosed, including a frame 1. A dust removal box 2 and a cooling box 3 are fixed on the frame 1 and are interconnected. The dust removal box 2 is provided with a plurality of dust removal bags 21. The cooling box 3 is provided with an air inlet hopper 31 for connecting it to the flue gas outlet of the Maeltz kiln. An exhaust assembly 4 connected to the dust removal box 2 is provided on the outside of the frame 1. A cooling mechanism 5 is provided in the cooling box 3. The cooling mechanism 5 includes a pipe network assembly 51 and a cooling pipe row 52. The pipe network assembly 51 is connected to an external coolant system and supplies coolant to the cooling pipe row 52. Multiple sets of cooling pipe rows 52 are provided and are evenly distributed along the flue gas path. A cleaning mechanism 6 is also provided in the cooling box 3 for cleaning debris on the surface of multiple sets of cooling pipe rows 52 at the same time.

[0031] The air inlet hopper 31 introduces the flue gas generated during the calcination process of the Maeltz kiln into the cooling box 3. The external coolant transported by the pipe network assembly 51 is delivered to multiple sets of cooling pipes 52 to fully cool the high-temperature flue gas, preventing damage to the subsequent dust collector bags 21 due to excessively high flue gas temperature. This allows the dust collector bags 21 to continue dust removal work in a low-temperature environment, which helps extend the service life of the dust collector bags 21. At the same time, the cleaning mechanism 6 in the cooling box 3 can simultaneously clean the condensate, dust and other debris on the surface of multiple sets of cooling pipes 52, ensuring the cooling effect of the cooling pipes 52. After cooling and dust removal, the flue gas is discharged from the dust collector 2 under the action of the exhaust assembly 4, ultimately achieving the purpose of efficient cooling and dust removal purification of the flue gas discharged from the Maeltz kiln.

[0032] The air outlet of the air inlet 31 is lower than the pipe network assembly 51. The pipe network assembly 51 includes a main water inlet pipe 511 connected to an external coolant system, a branch water inlet pipe 512 fixed and connected to the main water inlet pipe 511, a horizontal water inlet pipe 513 fixed and connected to the branch water inlet pipe 512, a main water outlet pipe 514 connected to an external coolant system, a branch water outlet pipe 515 fixed and connected to the main water outlet pipe 514, and a horizontal water outlet pipe 516 fixed and connected to the branch water outlet pipe 515. The number of cooling pipe rows 52 is equal to the number of main water outlet pipes 514 and the number of horizontal water outlet pipes 516. Each cooling pipe row 52 includes a U-shaped pipe body 521 connected to both the horizontal water inlet pipe 513 and the horizontal water outlet pipe 516. Each cooling pipe row 52 has multiple U-shaped pipe bodies 521. Multiple U-shaped pipe bodies 521 in the same cooling pipe row 52 are located on the same plane parallel to the flue gas path.

[0033] The coolant provided by the external coolant system flows sequentially along the main water inlet pipe 511, the branch water inlet pipe 512, the horizontal water inlet pipe 513, the U-shaped pipe 521, the horizontal water outlet pipe 516, the branch water outlet pipe 515, and the main water outlet pipe 514, and finally flows back to the external coolant system. The multiple U-shaped pipes 521 work together to quickly cool down the introduced flue gas from the Maeltz kiln, so as to prevent the high-temperature flue gas from accelerating the aging of the dust collector bag 21 and thus extend the service life of the dust collector bag 21.

[0034] The cooling pipe array 52 also includes U-shaped fins 522 fixed between two adjacent U-shaped pipe bodies 521. The U-shaped fins 522 increase the contact area between the cooling pipe array 52 and the high-temperature flue gas. When the coolant flows along the U-shaped pipe body 521, it can efficiently absorb the heat of the flue gas through the U-shaped fins 522, further improving the cooling effect of the flue gas.

[0035] The cooling box 3 contains a horizontal plate 32 located between the inlet horizontal pipe 513 and the outlet horizontal pipe 516. The cleaning mechanism 6 includes an installation component 61, a cleaning component 62, and a drive component 63. The installation component 61 is mounted on the horizontal plate 32. The number of installation components 61 is equal to the number of cooling pipe rows 52, and their positions correspond one-to-one. The installation component 61 includes a connecting rod 611 fixed to the bottom of the horizontal plate 32, a U-shaped seat 612 fixed to the lower end of the connecting rod 611, and a sleeve 613 that passes through both sides of the U-shaped seat 612 and is rotatably connected. The sleeve 613 has a spiral protrusion 6131 inside. Each set of installation components 61 has two sleeves 613, which are mirror images of each other, for cooling. The box 3 is also equipped with a rotating rod 33 located between two vertical pieces of the inner U-shaped fin 522. The rotating rod 33 passes through the sleeve 613 and is fitted with a clearance. The side wall of the rotating rod 33 is provided with a spiral groove 331 that is threadedly connected to the spiral protrusion 6131 at the position corresponding to the sleeve 613. The rotating rod 33 is provided with two sleeves 613 that are mirror images of each other. The drive assembly 63 includes a lifting unit 631 for driving the horizontal plate 32 to rise and fall, and a drive unit 632 for driving the rotating rod 33 to reciprocate along the axial direction of the sleeve 613. The cleaning assembly 62 is provided on the sleeve 613 and is used to clean the debris on the U-shaped tube 521 and the U-shaped fin 522.

[0036] When the cleaning component 62 moves to the vertical section of the U-shaped fin 522, it is in a horizontal state. The lifting unit 631 controls the synchronous lifting and lowering of the connecting rod 611, U-shaped seat 612, sleeve 613, rotating rod 33, and cleaning component 62 by driving the horizontal plate 32 to lift. In this way, the cleaning component 62 cleans the debris on the U-shaped tube 521 and U-shaped fin 522, thereby ensuring the cooling effect of the U-shaped tube 521 and U-shaped fin 522 on the flue gas. When the cleaning component 62 moves to the U-shaped curved section of the U-shaped fin 522, the driving unit 632 drives the rotating rod 33 to reciprocate along the axial direction of the sleeve 613. Since the spiral groove 331 on the rotating rod 33 is threadedly connected to the spiral protrusion 6131 inside the sleeve 613, the sleeve 613 can rotate back and forth, so that the cleaning component 62 can clean the U-shaped curved section of the U-shaped tube 521 and U-shaped fin 522.

[0037] The cleaning assembly 62 includes two sets of cleaning units 621 symmetrically arranged about the U-shaped seat 612. Each set of cleaning units 621 has two sets and is symmetrically distributed on both sides of the U-shaped tube 521. Each set of cleaning units 621 includes a mounting plate 6211 fixed to the outer wall of the sleeve 613 and a flexible scraper 6212 fixed to the mounting plate 6211 for pressing against the outer wall of the U-shaped tube 521 and the side wall of the U-shaped fin 522 (the flexible scraper 6212 is made of high-temperature resistant silicone material to ensure tight fit with the U-shaped tube 521 without damaging the surface). The mounting plates 6211 of the two sets of cleaning assemblies 6211 are fixed with abutment posts 6213 on the side closest to each other, and the abutment posts 6213 on the two sets of mounting plates 6211 are staggered.

[0038] When the lifting unit 631 drives the horizontal plate 32 to rise and fall, causing the mounting plate 6211 to rise and fall synchronously, the flexible scraper 6212 simultaneously cleans the vertical sections of the U-shaped tube 521 and the U-shaped fins 522. When the drive unit 632 drives the rotating rod 33 to reciprocate along the axial direction of the sleeve 613, the sleeve 613 rotates synchronously, thereby causing the flexible scraper 6212 to simultaneously clean the U-shaped curved sections of the U-shaped tube 521 and the U-shaped fins 522. When the flexible scraper 6212 moves to the bottom of the U-shaped tube 521, the two sets of mounting plates 6211 approach each other, and the two sets of abutment posts 6213 collide with the mounting plates 6211 of the opposite set, forming a clapping-like action, shaking off the debris adhering to the mounting plates 6211 and the flexible scraper 6212, ensuring the subsequent cleaning effect.

[0039] The drive unit 632 includes a first plate 6321 fixed to the inner wall of one side of the cooling box 3, a first screw 6322 rotatably connected to the first plate 6321, a first motor 6323 fixed to the first plate 6321 and driving the first screw 6322 to rotate, a first movable plate 6324 sleeved on the first screw 6322 and threadedly connected, a first push plate 6325 fixed to the bottom of the first movable plate 6324, a first block 6326 fixed to one end of two rotating rods 33, a second plate 6327 fixed to the inner wall of the other side of the cooling box 3, a second screw 6328 rotatably connected to the second plate 6327, and a second motor 6329 fixed to the second plate 6327 and driving the second screw 6328 to rotate. The second movable plate 6330 is threadedly connected to the second screw 6328, the second push plate 6331 is fixed to the bottom of the second movable plate 6330, and the second block 6332 is fixed to the other end of the two rotating rods 33. The sides of the first movable plate 6324 and the second movable plate 6330 that are far apart from each other abut against the inner walls of both sides of the cooling box 3. The U-shaped part of the first block 6326 is provided with an abutting inclined surface 63261. The first push plate 6325 is provided with an inclined surface 63251 that cooperates with the abutting inclined surface 63261 near its lower end. The upper end of the second push plate 6331 is provided with a clearance opening 63311 for the second screw 6328 to move. The lower end of the second push plate 6331 is provided with a pushing inclined surface 63312 at the intersection with the side of the second push plate 6331 near the first push plate 6325.

[0040] When it is necessary to clean the U-shaped curved section of the U-shaped tube 521 and the U-shaped fin 522, the operator only needs to start the first motor 6323, so that the first movable plate 6324 and the first push plate 6325 move synchronously. The inclined surface 63251 of the first push plate 6325 cooperates with the abutting inclined surface 63261 of the first block 6326, so that the first block 6326 drives the rotating rod 33 to move along the axial direction of the sleeve 613, thereby causing the sleeve 613 to rotate, so that the mounting plate 6211 and the flexible scraper 6212 rotate synchronously, and the U-shaped curved section of the U-shaped tube 521 and the U-shaped fin 522 are cleaned simultaneously by the flexible scraper 6212. When the flexible scraper 6212 moves to the bottom of the U-shaped tube 521 and needs to return, the operator needs to start the second motor 6329. After the second motor 6329 starts working, it drives the second movable plate 6330 and the second push plate 6331 to move synchronously. When the pushing inclined surface 63312 of the second push plate 6331 abuts against the second block 6332, it can drive the rotating rod 33 to move along the axial direction of the sleeve 613 and reset. The sleeve 613 rotates in the opposite direction and makes the mounting plate 6211 and the flexible scraper 6212 return to the horizontal state along the original path so that the vertical section of the U-shaped tube 521 and the U-shaped fins 522 can be cleaned later.

[0041] A connecting plate 321 is fixed to the top of the horizontal plate 32. The lifting unit 631 includes a fixed plate 6311 fixed to the inner wall of the cooling box 3 and parallel to the connecting plate 321, an electric hydraulic push rod 6312 hinged to the inner wall of the cooling box 3, a movable block 6313 hinged to the push rod end of the electric hydraulic push rod 6312, and a scissor-type support frame 6314 hinged between the fixed plate 6311 and the connecting plate 321. The fixed plate 6311 is provided with an upper through hole 63111. The movable block 6313 is hinged to the upper end of the scissor-type support frame 6314. The hinge shaft between the movable block 6313 and the scissor-type support frame 6314 is slidably engaged with the upper through hole 63111. The connecting plate 321 is provided with a lower through hole 3211 for the hinge rod at the bottom of the scissor-type support frame 6314 to slide.

[0042] When it is necessary to clean the vertical sections of the U-shaped tube 521 and U-shaped fins 522, the operator only needs to activate the electric hydraulic push rod 6312, so that the hinge shaft between the movable block 6313 and the scissor support frame 6314 slides along the upper through hole 63111, thereby causing the scissor support frame 6314 to undergo adaptive deformation, and causing the connecting plate 321 and the horizontal plate 32 to complete the lifting and lowering. The cleaning component 62 lifts and lowers synchronously and completes the cleaning work of the vertical sections of the U-shaped tube 521 and U-shaped fins 522.

[0043] A partition 22 is provided near the top of the dust collection box 2. The dust collection bag 21 is located between the partition 22 and the bottom of the dust collection box 2. An air outlet 221 is provided at the corresponding position of the partition 22 and the dust collection bag 21. The exhaust assembly 4 includes an exhaust fan 41 located on one side of the frame 1 and an exhaust duct 42 for connecting the air inlet of the exhaust fan 41 to the dust collection box 2. The air inlet of the exhaust duct 42 is located between the partition 22 and the top of the dust collection box 2.

[0044] After the exhaust fan 41 is working, a negative pressure is generated between the top of the dust collector 2 and the top of the partition 22. The dust-laden gas can first be filtered by the dust collector bag 21 to remove dust. The filtered clean gas enters the space above the partition 22 through the air outlet 221 on the partition 22, and then is discharged through the exhaust pipe 42, ensuring the cleanliness of the flue gas discharged from the Maerz kiln.

[0045] The cooling box 3 is fixed to the bottom and connected to the first ash hopper 34, and the dust collector 2 is fixed to the bottom and connected to the second ash hopper 23. Both the first ash hopper 34 and the second ash hopper 23 are equipped with solenoid valves (not shown in the figure). The debris generated by the cleaning mechanism 6 from cleaning the surface of the cooling pipe array 52 falls into the first ash hopper 34; the dust on the dust collector bag 21 falls into the second ash hopper 23 for centralized cleaning by the staff.

[0046] The dust collection box 2 is equipped with a cleaning component 7. The cleaning component 7 includes a main air pipe 71 fixed to the outer wall of the dust collection box 2 and connected to the external high-pressure air supply system, a branch air pipe 72 connected to the main air pipe 71 and extending into the space between the partition 22 and the inner top wall of the dust collection box 2, and an air jet pipe 73 fixed to and connected to the bottom of the branch air pipe 72. The air jet pipe 73 passes through the air outlet 221 and extends into the dust collection bag 21. The number of air jet pipes 73 is equal to the number of dust collection bags 21 and their positions correspond one-to-one.

[0047] After the dust collector bag 21 has been used for a period of time, in order to ensure continuous filtration effect, the staff only needs to use the external high-pressure air supply system to provide high-pressure airflow into the dust collector bag 21 through the main air pipe 71, branch air pipe 72 and jet pipe 73 in sequence, so as to blow out the dust covering the dust collector bag 21. The dust falls into the second dust hopper 23, which is convenient for the staff to clean.

[0048] To prevent dust particles in the flue gas from covering the spiral grooves 331, a flexible sleeve 8 is fixed between adjacent U-shaped seats 612, and the spiral grooves 331 on the two rotating rods 33 are located inside the flexible sleeve 8.

[0049] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An environmentally friendly dust removal device for a Maerz kiln, characterized in that: The machine includes a frame (1), on which a dust collection box (2) and a cooling box (3) are fixed and connected to each other. The dust collection box (2) is equipped with multiple dust collection bags (21). The cooling box (3) is equipped with an air inlet hopper (31) for connecting it to the exhaust port of the Maeltz kiln. An exhaust assembly (4) connected to the dust collection box (2) is provided on the outside of the frame (1). A cooling mechanism (5) is provided in the cooling box (3). The cooling mechanism (5) includes a pipe network assembly (51) and a cooling pipe bank (52). The pipe network assembly (51) is connected to an external coolant system and supplies coolant to the cooling pipe bank (52). There are multiple sets of cooling pipe banks (52) and they are evenly distributed along the flue gas path. A cleaning mechanism (6) is also provided in the cooling box (3) for cleaning the debris on the surface of multiple sets of cooling pipe banks (52) at the same time. The air outlet of the air inlet hopper (31) is lower than the pipe network assembly (51). The pipe network assembly (51) includes a main water inlet pipe (511) connected to an external coolant system, a branch water inlet pipe (512) fixed to and connected to the main water inlet pipe (511), a horizontal water inlet pipe (513) fixed to and connected to the branch water inlet pipe (512), a main water outlet pipe (514) connected to an external coolant system, a branch water outlet pipe (515) fixed to and connected to the main water outlet pipe (514), and a horizontal water outlet pipe (516) fixed to and connected to the branch water outlet pipe (515). The number of cooling pipe groups (52) is equal to the number of water outlet main pipes (514) and the number of water outlet horizontal pipes (516). Each cooling pipe group (52) includes a U-shaped pipe body (521) that is connected to both the water inlet horizontal pipe (513) and the water outlet horizontal pipe (516). Each cooling pipe group (52) is provided with multiple U-shaped pipe bodies (521). Multiple U-shaped pipe bodies (521) are provided in the same cooling pipe group (52) and are located on the same plane parallel to the flue gas path. The cooling pipe bank (52) also includes U-shaped fins (522) fixed between two adjacent U-shaped pipe bodies (521); the cooling box (3) is provided with a horizontal plate (32) located between the water inlet horizontal pipe (513) and the water outlet horizontal pipe (516); the cleaning mechanism (6) includes an installation component (61), a cleaning component (62) and a drive component (63); the installation component (61) is set on the horizontal plate (32); the number of installation components (61) is equal to the number of cooling pipe banks (52) and their positions correspond one-to-one; the installation component (61) includes a connecting rod (611) fixed to the bottom of the horizontal plate (32), a U-shaped seat (612) fixed to the lower end of the connecting rod (611), and a sleeve (613) that passes through the seat body on both sides of the U-shaped seat (612) and is rotatably connected; The sleeve (613) is provided with a spiral protrusion (6131). Each set of mounting components (61) has two sleeves (613) which are mirror images of each other. The cooling box (3) is also provided with a rotating rod (33) located between two vertical plates of the inner U-shaped fin (522). The rotating rod (33) passes through the sleeve (613) and is clearance-fitted. The side wall of the rotating rod (33) is provided with a threaded connection to the spiral protrusion (6131) at the position corresponding to the sleeve (613). The spiral groove (331) and the rotating rod (33) are provided with two sleeves (613) that are mirror images of each other. The driving assembly (63) includes a lifting unit (631) for driving the horizontal plate (32) to rise and fall, and a driving unit (632) for driving the rotating rod (33) to reciprocate along the axial direction of the sleeve (613). The cleaning assembly (62) is provided on the sleeve (613) and is used to clean the debris on the U-shaped tube (521) and U-shaped fins (522). The cleaning assembly (62) includes two sets of cleaning units (621) symmetrically arranged about the U-shaped seat (612). Each cleaning assembly (62) has two sets of cleaning units (621) symmetrically distributed on both sides of the U-shaped tube (521). Each cleaning unit (621) includes a mounting plate (6211) fixed to the outer wall of the sleeve (613) and a flexible scraper (6212) fixed to the mounting plate (6211) and used to abut against the outer wall of the U-shaped tube (521) and the side wall of the U-shaped fin (522). The mounting plates (6211) of the two sets of cleaning assemblies (62) are fixed with abutment posts (6213) on the side that is close to each other, and the abutment posts (6213) on the two sets of mounting plates (6211) are staggered.

2. The environmentally friendly dust removal device for a Maerz kiln according to claim 1, characterized in that: The drive unit (632) includes a first plate (6321) fixed to the inner wall of one side of the cooling box (3), a first screw (6322) rotatably connected to the first plate (6321), a first motor (6323) fixed to the first plate (6321) and driving the first screw (6322) to rotate, a first movable plate (6324) sleeved on the first screw (6322) and threadedly connected, a first push plate (6325) fixed to the bottom of the first movable plate (6324), and a first block (6325) fixed to one end of the two rotating rods (33). 26) A second plate (6327) fixed on the inner wall of the other side of the cooling box (3), a second screw (6328) that is rotatably connected to the second plate (6327), a second motor (6329) fixed on the second plate (6327) and driving the second screw (6328) to rotate, a second movable plate (6330) sleeved on the second screw (6328) and threadedly connected, a second push plate (6331) fixed to the bottom of the second movable plate (6330), and a second block (6332) that is fixed together to the other end of the two rotating rods (33); The sides of the first movable plate (6324) and the second movable plate (6330) that are far apart from each other abut against the inner walls of the cooling box (3) on both sides respectively. The U-shaped part of the first block (6326) is provided with an abutting inclined surface (63261). The first push plate (6325) is provided with an inclined surface (63251) that cooperates with the abutting inclined surface (63261) near its lower end. The upper end of the second push plate (6331) is provided with a clearance opening (63311) for the second screw (6328) to move. The lower end of the second push plate (6331) is provided with a pushing inclined surface (63312) at the intersection with the side of the second push plate (6331) near the first push plate (6325).

3. The environmentally friendly dust removal device for a Maerz kiln according to claim 1, characterized in that: A connecting plate (321) is fixed to the top of the horizontal plate (32). The lifting unit (631) includes a fixed plate (6311) fixed to the inner wall of the cooling box (3) and parallel to the connecting plate (321), an electric hydraulic push rod (6312) hinged to the inner wall of the cooling box (3), a movable block (6313) hinged to the push rod end of the electric hydraulic push rod (6312), and a scissor-type support frame hinged between the fixed plate (6311) and the connecting plate (321). 6314), the fixed plate (6311) is provided with an upper through hole (63111), the movable block (6313) is hinged to the upper end of the scissor support frame (6314), the hinge shaft between the movable block (6313) and the scissor support frame (6314) is slidably engaged with the upper through hole (63111), and the connecting plate (321) is provided with a lower through hole (3211) for the hinge rod at the bottom of the scissor support frame (6314) to slide.

4. The environmentally friendly dust removal device for a Maerz kiln according to claim 2, characterized in that: A partition (22) is provided near the top of the dust collector (2). The dust collector bag (21) is located between the partition (22) and the bottom of the dust collector (2). An air outlet (221) is provided at the corresponding position of the partition (22) and the dust collector bag (21). The exhaust assembly (4) includes an exhaust fan (41) located on one side of the frame (1) and an exhaust duct (42) for connecting the air inlet of the exhaust fan (41) to the dust collector (2). The air inlet of the exhaust duct (42) is located between the partition (22) and the top of the dust collector (2).

5. The environmentally friendly dust removal device for a Maerz kiln according to claim 4, characterized in that: The cooling box (3) is fixed to the bottom and connected to the first ash hopper (34), and the dust collector (2) is fixed to the bottom and connected to the second ash hopper (23). Solenoid valves are installed on both the first ash hopper (34) and the second ash hopper (23).

6. The environmentally friendly dust removal device for a Maerz kiln according to claim 5, characterized in that: The dust collector (2) is equipped with a cleaning component (7). The cleaning component (7) includes a main air pipe (71) fixed to the outer wall of the dust collector (2) and connected to the external high-pressure air supply system, a branch air pipe (72) connected to the main air pipe (71) and extending into the partition (22) between the inner top wall of the dust collector (2), and a jet pipe (73) fixed to and connected to the bottom of the branch air pipe (72). The jet pipe (73) passes through the air outlet (221) and extends into the dust collector bag (21). The number of jet pipes (73) is equal to the number of dust collector bags (21) and their positions correspond one-to-one.

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