A waste gas treatment device for processing a magnetic material

Abstract

This invention discloses a waste gas treatment device for magnetic material processing, relating to the field of waste gas treatment technology. It includes a bottom pipe, an expansion pipe, and a top pipe, detachably connected sequentially from bottom to top, with their internal cavities interconnected. A collection mechanism is provided inside the bottom pipe, and a filter element is provided inside the top pipe. The collection mechanism includes a transmission pipe, a rotating rod, and a rotating cover, all vertically distributed and interconnected. The transmission pipe passes through the internal cavities of the bottom pipe, expansion pipe, and top pipe. The outer side of the rotating cover is unidirectionally rotatably connected to the inner side of the expansion pipe. This waste gas treatment device for magnetic material processing uses a rotating mechanism to drive the transmission pipe to rotate, causing the agitation component and dust collection component to rotate. This improves centrifugal dust removal efficiency while directly collecting fine dust that has minimal impact on centrifugal dust removal. Both components share a single power system, resulting in high integration and reduced floor space.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a waste gas treatment device for magnetic material processing. Background Technology

[0002] Rare earth permanent magnet materials are widely used in strategic emerging industries such as new energy vehicles, wind power generation, electronic information, and aerospace due to their excellent magnetic properties. The global demand continues to grow rapidly, and the amount of magnetic material waste such as scraps, defective products, and scrapped devices generated during the production process is increasing dramatically. It is necessary to recycle these waste materials, and the recycling process will generate waste gas that needs to be treated.

[0003] Chinese patent document CN107429914B discloses an exhaust gas treatment device. This device is used to treat exhaust gas by combustion, thereby rendering it harmless. The cylindrical combustion chamber for burning the exhaust gas includes a fuel nozzle, a combustion-supporting gas nozzle, and a exhaust gas nozzle, which blow fuel, combustion-supporting gas, and exhaust gas tangentially towards the inner circumferential surface of the combustion chamber. The fuel nozzle, combustion-supporting gas nozzle, and exhaust gas nozzle are located on the same plane orthogonal to the axis of the combustion chamber.

[0004] The existing technology has the following problems:

[0005] Existing methods for exhaust gas dust removal mostly use bag filters or cyclone dust collectors. While the former filters fine dust, it requires regular maintenance. The latter uses centrifugal force, but its ability to handle fine dust is relatively weak. Existing methods often use two types of dust collectors connected in series, requiring multiple independent processing devices and connecting pipelines. This results in a large footprint, high investment costs, and poor coordination between different processes. Summary of the Invention

[0006] The main objective of this invention is to provide a waste gas treatment device for magnetic material processing, which can effectively solve the problems of fragmented processing technology and low integration.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A waste gas treatment device for magnetic material processing includes a bottom pipe, an expansion pipe, and a top pipe that are detachably connected from bottom to top, and the inner cavities of the three are interconnected. A collection mechanism is provided on the inner side of the bottom pipe, and a filter element is provided on the inner side of the top pipe. The collection mechanism includes a transmission pipe, a rotating rod, and a rotating cover that are vertically distributed and interconnected. The transmission pipe passes through the inner cavities of the bottom pipe, the expansion pipe, and the top pipe. The outer side of the rotating cover is unidirectionally rotatably connected to the inner side of the expansion pipe. Several annularly distributed air guide pipes are fixedly connected to the upper wall of the rotating cover through mounting holes. Several vertically distributed dust collection components are provided on the outer side of the transmission pipe, and the dust collection components are located on the inner side of the top pipe. A rotating mechanism for driving the transmission pipe to rotate is provided on the rear side of the expansion pipe.

[0009] The rotating mechanism drives the transmission tube to rotate, which in turn drives the rotating cover to rotate, causing the air guide tube to revolve. The gas to be treated enters the expansion tube and the inner cavity of the top tube through the air guide tube. After centrifugation and filtration, the gas finally passes through the filter element to adsorb a small amount of acidic gas, thus achieving waste gas treatment.

[0010] Preferably, a plurality of annularly distributed agitating components are fixedly connected to the outer side of the transmission tube, and the agitating components are located inside the expansion tube. The agitating components include a support frame fixedly connected to the outer side of the transmission tube, and a plurality of vertically distributed air guide plates are rotatably connected to the inner side of the support frame.

[0011] Preferably, a first movable column is movably sleeved on the inner side of the transmission tube, and a bidirectional screw is threadedly connected to the inner side of the first movable column. A first gear is fixedly connected to one end of each of the several air guide plates near the first movable column, and the first gear passes through the side wall of the transmission tube and enters the interior of the transmission tube. A first rack that meshes with the first gear is fixedly connected to the outer side of the first movable column.

[0012] Preferably, the lower end of the bidirectional screw is fixedly connected to a polygonal prism that is unidirectionally rotatably connected to the transmission tube, and the rotatable direction of the polygonal prism relative to the transmission tube is opposite to the rotatable direction of the rotating cover relative to the bottom tube. The outer side of the polygonal prism is movably sleeved in the transmission hole opened at the upper end of the rotating rod, and the lower end of the rotating rod is fixedly connected to the upper side of the rotating cover.

[0013] Preferably, the dust collection assembly includes several annularly distributed dust collection hoods fixedly connected to the outside of the transmission pipe. Each of the dust collection hoods has a dust-proof mesh embedded in its upper wall, and each of the dust collection hoods has an auger rotatably connected to its inner bottom. A retaining ring that fits against the inner wall of the top pipe is fixedly connected to the outer side of each dust collection hood, and the retaining ring has a dust outlet hole that communicates with the inner cavity of the dust collection hood. A second dust collection hood is fixedly connected to the outer side of the top pipe, and the outer wall of the top pipe has a hole that connects the inner cavity of the second dust collection hood and the dust removal hole.

[0014] Preferably, a second moving column located above the first moving column is movably sleeved on the inner side of the transmission tube. A second gear is fixedly connected to one end of each of the augers near the second moving column, and the second gear passes through the side wall of the transmission tube and enters the interior of the transmission tube. A second rack meshing with the second gear is fixedly connected to the outer side of the second moving column. A fixed frame is fixedly connected to the inner side of the top tube. The outer side of the transmission tube is rotatably connected to the inner side of the fixed frame. An electrically controlled stationary drive rod is rotatably connected to the lower side of the fixed frame. The drive rod passes through the upper end of the transmission tube and enters the drive hole at the upper end of the second moving column. When the second moving column and the drive rod rotate relative to each other, the second moving column moves upward.

[0015] Preferably, a dust-sweeping plate is sleeved on the inner side of the outer vertical groove of the support frame, the lower inner surface of the expansion tube is an inverted conical surface, an air baffle plate is fixedly connected to the lower inner surface of the expansion tube, and the air baffle plate is annular. There is a gap between the lower side of the air baffle plate and the lower inner surface of the expansion tube, a first dust collection hood is fixedly connected to the outer side of the expansion tube, and a discharge hole communicating with the first dust collection hood and the inner cavity of the expansion tube is opened at the bottom of the outer side of the bottom tube.

[0016] Preferably, the inner side of the outer vertical groove of the support frame is provided with several vertically distributed guide grooves for guiding the dust sweeping plate. When the support frame moves up and down, the dust sweeping plate approaches or moves away from the inner wall of the expansion tube. The bottom inner side of the expansion tube is fixedly connected to a driving assembly. The driving assembly includes a guide ring and several annularly distributed filling blocks nested therewith. The lower side of the guide ring is fixedly connected to the bottom inner side of the expansion tube and is located outside the air baffle plate. The upper side of the guide ring is provided with several annularly distributed inclined guiding surfaces for pushing the dust sweeping plate upward. The upper surface of the filling block is used to extend the inclined guiding surfaces to further push the dust sweeping plate upward. An elastic suction member is provided between the dust sweeping plate and the support frame to fix the dust sweeping plate at the highest point.

[0017] Preferably, each of the filling blocks is fixedly connected to a push rod on the side near the transmission tube. Each of the push rods is provided with an elastic element that pulls them closer together. A top cone sleeve driven by a spring is sleeved on the outer side of the rotating rod. When the top cone sleeve moves upward, it pushes the filling blocks away from each other. A pressure ring driven by a spring is sleeved on the bottom of the outer side of the transmission tube. When the pressure ring is in the lowest position, it presses down on the top cone sleeve to keep it in the lowest position. A pull rope is fixedly connected between the upper side of the pressure ring and the lower side of the second moving column. The pull rope passes through the side wall of the transmission tube and moves within the inner cavity of the transmission tube.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention provides a waste gas treatment device for magnetic material processing. Based on the cooperation of a collection mechanism, a transmission pipe, a rotating hood, a gas guide pipe, a stirring component, a support frame, a gas guide plate, a first gear, a dust collection component, a dust collection hood, an auger, a second gear, a first moving column, a second moving column, a rotating rod, a bidirectional screw, a drive rod, a first dust collection hood, and a second dust collection hood, the transmission pipe is driven to rotate by the rotating mechanism, which causes the stirring component and the dust collection component to rotate. This improves the efficiency of centrifugal dust removal while directly collecting fine dust that has little impact on centrifugal dust removal. Both share a single power system, resulting in high integration and reduced floor space.

[0020] 2. This invention provides a waste gas treatment device for magnetic material processing. Based on the cooperation of the stirring component, support frame, dust sweeping plate, guide groove, drive component, guide ring, filling block, push rod, top cone sleeve, pressure ring and pull rope, the dust sweeping plate can be moved away from or close to the inner wall of the expansion tube by the guidance of the guide ring and the filling block. This allows the dust sweeping plate to move away from the inner wall of the expansion tube in high-speed centrifugal state and close to the inner wall of the expansion tube in low-speed state. This avoids the dust sweeping plate being in constant contact with the inner wall of the expansion tube, which would affect the service life of the components. At the same time, it avoids the problem of dust being raised and affecting the centrifugal dust removal efficiency when sweeping the inner wall of the expansion tube at high speed. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention;

[0023] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the bottom tube portion of the present invention;

[0024] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the transmission tube portion of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged structural diagram of part A in the middle;

[0026] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the jacking pipe section of the present invention;

[0027] Figure 7 This is a partial cross-sectional three-dimensional structural diagram of the dust collection component of the present invention;

[0028] Figure 8 For the present invention Figure 7 Enlarged structural diagram of section B in the middle;

[0029] Figure 9 This is a partial cross-sectional three-dimensional structural diagram of the expansion tube portion of the present invention;

[0030] Figure 10 For the present invention Figure 9 Enlarged structural diagram of section C in the middle;

[0031] Figure 11 This is a partial cross-sectional three-dimensional structural diagram of the air baffle plate portion of the present invention;

[0032] Figure 12 For the present invention Figure 11 Enlarged structural diagram of part D in the middle.

[0033] In the diagram: 1. Bottom pipe; 2. Expansion pipe; 3. Top pipe; 4. Collection mechanism; 41. Transmission pipe; 42. Rotating hood; 43. Air guide pipe; 44. Agitator assembly; 441. Support frame; 442. Air guide plate; 443. First gear; 444. Dust sweeping plate; 445. Guide groove; 45. Dust collection assembly; 451. Dust collection hood; 452. Screwdriver; 453. Second gear; 46. Drive assembly; 1. Guide ring; 462. Filling block; 463. Push rod; 464. Top cone sleeve; 465. Pressure ring; 466. Pull rope; 47. Air baffle plate; 48. Fixing frame; 49. First moving column; 410. Second moving column; 411. Polygonal prism; 412. Rotating rod; 413. Bidirectional screw; 414. Drive rod; 5. First dust collection hood; 6. Second dust collection hood; 7. Filter element; 8. Rotating mechanism. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] Example 1, as Figures 1-3 As shown, a waste gas treatment device for magnetic material processing includes a bottom pipe 1, an expansion pipe 2, and a top pipe 3, which are detachably connected from bottom to top, and the inner cavities of the three are interconnected. The detachable connection is a flange connection. A collection mechanism 4 is provided on the inner side of the bottom pipe 1, and a filter element 7 is provided on the inner side of the top pipe 3. The filter element 7 is used to absorb a small amount of dust and acidic gases that are still effective after the previous dust removal operation.

[0036] The collection mechanism 4 includes a transmission pipe 41, a rotating rod 412, and a rotating cover 42 that are distributed vertically and interconnected. The transmission pipe 41 passes through the inner cavity of the bottom pipe 1, the expansion pipe 2, and the top pipe 3. The transmission pipe 41 is located on the lower side of the filter element 7. The outer side of the rotating cover 42 is unidirectionally rotatably connected to the inner side of the expansion pipe 2. Several annularly distributed air guide pipes 43 are fixedly connected to the upper wall of the rotating cover 42 through mounting holes. The air guide pipes 43 are spiral in shape, and the inner diameter of the air guide pipes 43 gradually decreases from the air inlet end to the air outlet end, which is used to rotate and accelerate the dust-laden gas.

[0037] Several vertically distributed dust collection components 45 are provided on the outer side of the transmission pipe 41, and the dust collection components 45 are located on the inner side of the top pipe 3. A rotating mechanism 8 is provided on the rear side of the expansion pipe 2 to drive the transmission pipe 41 to rotate. The rotating mechanism 8 can drive the transmission pipe 41 to rotate in both directions.

[0038] The rotating mechanism 8 drives the transmission pipe 41 to rotate, which in turn drives the rotating cover 42 to rotate, causing the gas guide pipe 43 to revolve. The gas to be treated enters the expansion pipe 2 and the inner cavity of the top pipe 3 through the gas guide pipe 43. The gas to be treated needs to undergo dry deacidification treatment before entering the bottom pipe 1. After centrifugation and filtration, the gas finally passes through the filter element 7 to adsorb a small amount of acidic gas, thus achieving waste gas treatment.

[0039] Example 2, as Figure 4 , Figure 5 As shown, a number of ring-shaped agitation components 44 are fixedly connected to the outside of the transmission tube 41, and the agitation components 44 are located inside the expansion tube 2. The agitation components 44 include a support frame 441 fixedly connected to the outside of the transmission tube 41. A number of vertically distributed air guide plates 442 are rotatably connected to the inside of the support frame 441. The rotating mechanism 8 drives the transmission tube 41 to rotate, thereby driving the air guide plates 442 to revolve. The air guide plates 442 are used to agitate the gas to be processed and increase the rotation speed of the gas.

[0040] Preferably, a first movable column 49 is movably sleeved on the inner side of the transmission tube 41, and a bidirectional screw 413 is threaded on the inner side of the first movable column 49. Rotating the bidirectional screw 413 can drive the first movable column 49 to move up and down. A first gear 443 is fixedly connected to one end of several air guide plates 442 near the first movable column 49.

[0041] When the first moving column 49 moves up and down, it drives the bidirectional screw 413 to rotate through the first rack, thereby adjusting the angle between the air guide plate 442 and the horizontal plane, and making targeted adjustments for the exhaust gas generated in different batches and different processing stages. The first gear 443 passes through the side wall of the transmission tube 41 and enters the interior of the transmission tube 41. The first rack that meshes with the first gear 443 is fixedly connected to the outside of the first moving column 49.

[0042] Preferably, the lower end of the bidirectional screw 413 is fixedly connected to a polygonal prism 411 that is unidirectionally rotatably connected to the transmission tube 41. The rotatable direction of the polygonal prism 411 relative to the transmission tube 41 is opposite to the rotatable direction of the rotating cover 42 relative to the bottom tube 1. Taking the rotatable direction of the rotating cover 42 relative to the bottom tube 1 as the positive direction, when the transmission tube 41 rotates, it drives the rotating rod 412 through the polygonal prism 411, which in turn drives the rotating cover 42 to rotate. The outer side of the polygonal prism 411 is movably sleeved in the transmission hole opened at the upper end of the rotating rod 412. The lower end of the rotating rod 412 is fixedly connected to the upper side of the rotating cover 42.

[0043] It should be noted that the rotating mechanism 8 drives the transmission tube 41 to rotate in the forward direction, which in turn drives the rotating cover 42 to rotate, thereby achieving centrifugal dust removal. When the rotating mechanism 8 drives the transmission tube 41 to rotate in the reverse direction, the transmission tube 41 cannot drive the polygonal prism 411 to rotate. The rotating cover 42 and the bottom tube 1 remain stationary, and the bidirectional screw 413 rotates relative to the first moving column 49, thereby enabling the first moving column 49 to move up and down, and thus adjusting the air guide plate 442.

[0044] Example 3, as Figures 6-8 As shown, the dust collection assembly 45 includes several annularly distributed dust collection hoods 451 fixedly connected to the outside of the transmission pipe 41. Each dust collection hood 451 has a dust-proof mesh embedded in its upper wall. When the transmission pipe 41 rotates, it drives the dust collection hoods 451 to revolve, so that the gas after centrifugal dust removal is directly injected into the dust collection hoods 451 and further removed by the dust-proof mesh. The dust-proof mesh adopts the form of electrostatic adsorption, so that the dust can automatically fall into the dust collection hoods 451 after the power is turned off.

[0045] Several dust collection hoods 451 are rotatably connected to the bottom inner side of each dust collection hood 452. A retaining ring that fits against the inner wall of the top pipe 3 is fixedly connected to the outer side of the dust collection hood 451. The retaining ring has a dust outlet hole that connects to the inner cavity of the dust collection hood 451. The auger 452 transports the dust that falls into the dust collection hood 451, causing it to move automatically towards the dust removal hole, and then automatically removes the dust from the inner side of the top pipe 3. A second dust collection hood 6 is fixedly connected to the outer side of the top pipe 3. The outer wall of the top pipe 3 has a hole that connects the inner cavity of the second dust collection hood 6 and the dust removal hole.

[0046] Preferably, a second moving column 410 located on the upper side of the first moving column 49 is movably sleeved on the inner side of the transmission tube 41. The second moving column 410 has a similar structural shape to the first moving column 49. Several augers 452 are fixedly connected to a second gear 453 at one end near the second moving column 410. Similarly, when the second moving column 410 moves up and down, it can drive the second gear 453 to rotate through the second rack, thereby realizing the rotation of the dust collection hood 451. The second gear 453 passes through the side wall of the transmission tube 41 and enters the interior of the transmission tube 41. A second rack that meshes with the second gear 453 is fixedly connected to the outer side of the second moving column 410.

[0047] A fixed frame 48 is fixedly connected to the inner side of the jacking pipe 3. The outer side of the transmission pipe 41 is rotatably connected to the inner side of the fixed frame 48. An electrically controlled stationary drive rod 414 is rotatably connected to the lower side of the fixed frame 48. The electrical control can be achieved by electromagnetic adsorption. By electromagnetically adsorbing two friction plates, the drive rod 414 will not rotate. The drive rod 414 passes through the upper end of the transmission pipe 41 and enters the drive hole at the upper end of the second moving column 410. A spiral groove is provided on the inner side of the drive hole, and a slider is slidably connected in the spiral groove on the outer side of the second moving column 410.

[0048] When the second moving column 410 rotates relative to the drive rod 414, the second moving column 410 moves upward. The transmission tube 41 can be equipped with a structure to drive the second moving column 410 to move downward. This structure can be a spring, so that when the drive rod 414 is no longer fixed, the second moving column 410 moves downward. Alternatively, the second moving column 410 can move downward automatically by its own weight.

[0049] It should be noted that the rotating mechanism 8 drives the transmission tube 41 to rotate, which in turn drives the dust collection hood 451 to revolve, thereby filtering and removing fine dust. When the drive rod 414 is fixed, if the transmission tube 41 continues to rotate, the second moving column 410 and the drive rod 414 will rotate relative to each other, causing the second moving column 410 to move upward, thereby achieving the purpose of removing dust from the inside of the top pipe 3.

[0050] Example 4, as Figures 9-12 As shown, a dust sweeping plate 444 is sleeved on the inner side of the outer vertical groove of the support frame 441, the inner lower surface of the expansion tube 2 is an inverted conical surface, and an air baffle plate 47 is fixedly connected to the inner lower surface of the expansion tube 2. The air baffle plate 47 is composed of multiple annular plates, so that the gas entering the expansion tube 2 will not affect the dust on the inner lower surface of the expansion tube 2, and the air baffle plate 47 is annular.

[0051] There is a gap between the lower side of the baffle plate 47 and the lower inner surface of the expansion tube 2. The gap allows dust to slide off the expansion tube 2 on its own. The outer side of the expansion tube 2 is fixedly connected to the first dust collection hood 5. The bottom of the outer side of the bottom tube 1 is provided with a discharge hole that connects the first dust collection hood 5 and the inner cavity of the expansion tube 2.

[0052] Preferably, the support frame 441 has several vertically distributed guide grooves 445 on the inner side of the outer vertical groove for guiding the dust sweeping plate 444. The guide grooves 445 are inclined grooves. When the support frame 441 moves up and down, the dust sweeping plate 444 moves closer to or further away from the inner wall of the expansion tube 2. The side of the dust sweeping plate 444 is provided with a convex shaft that is slidably connected to the inner side of the guide groove 445.

[0053] A drive assembly 46 is fixedly connected to the inner bottom of the expansion tube 2. The drive assembly 46 includes a guide ring 461 and a number of ring-shaped filling blocks 462 nested therewith. The filling blocks 462 can be detached from the guide ring 461. The lower side of the guide ring 461 is fixedly connected to the inner bottom of the expansion tube 2 and is located on the outer side of the baffle plate 47.

[0054] The upper side of the guide ring 461 is provided with several annularly distributed inclined guide surfaces of the upward-pushing dust sweeping plates 444. When the lower side of the dust sweeping plate 444 is in contact with the inclined guide surface and the transmission tube 41 rotates in the forward direction, the dust sweeping plate 444 is pushed upward by the inclined guide surface. The upper surface of the filling block 462 is used to extend the inclined guide surface and further push the dust sweeping plate 444 upward.

[0055] An elastic suction element is provided between the dust sweeping plate 444 and the support frame 441 to fix the dust sweeping plate 444 at the highest position. The elastic suction element can adopt the structure of the elastic door suction on the cabinet door. Pushing the dust sweeping plate 444 upward once will automatically fix the dust sweeping plate 444 at the highest position. Pushing the dust sweeping plate 444 upward again will push the dust sweeping plate 444 down to the lowest position. When the dust sweeping plate 444 only slides on the guide ring 461, the dust sweeping plate 444 will not trigger the automatic fixing operation of the elastic suction element.

[0056] Preferably, each of the filling blocks 462 is fixedly connected to a push rod 463 on the side near the transmission tube 41. Each of the push rods 463 and the lower surface of the inner wall of the expansion tube 2 is provided with an elastic element that pulls them closer to each other. The elastic element can be a tension spring. In the initial state, the filling blocks 462 and the guide ring 461 are in a disengaged state.

[0057] A spring-driven top cone sleeve 464 is sleeved on the outer side of the rotating rod 412. When the top cone sleeve 464 moves upward, it pushes the filling blocks 462 away from each other. When the top cone sleeve 464 is not subjected to other forces, the top cone sleeve 464 is pushed upward by the spring. When the top cone sleeve 464 moves upward, it pushes the push rod 463 to move, thereby causing the guide ring 461 and the filling block 462 to engage with each other.

[0058] A spring-driven downward-moving pressure ring 465 is sleeved on the outer bottom of the transmission tube 41. When the pressure ring 465 is at its lowest position, it presses down on the top cone sleeve 464 to keep it at its lowest position. A pull rope 466 is fixedly connected between the upper side of the pressure ring 465 and the lower side of the second moving column 410. When the second moving column 410 moves upward, it pulls the pull rope 466, which in turn drives the guide ring 461 and the filling block 462 to engage, thereby controlling the position of the dust sweeping plate 444. The pull rope 466 passes through the side wall of the transmission tube 41 and moves within the inner cavity of the transmission tube 41. When the dust sweeping plate 444 is at its lowest position, the transmission tube 41 cannot reverse.

[0059] It should be noted that the drive rod 414 rotates relative to the second moving column 410, causing the second moving column 410 to move upward, which in turn pulls the pull rope 466, causing the pressure ring 465 to move upward, which in turn causes the top cone sleeve 464 to move upward, so that the filling block 462 and the guide ring 461 are engaged with each other, thereby controlling the height position of the dust sweeping plate 444, so that the dust sweeping plate 444 is close to or away from the inner wall of the expansion tube 2.

[0060] The working principle of this invention is as follows: First, the rotating mechanism 8 drives the transmission tube 41 to rotate clockwise, causing the transmission tube 41 to drive the rotating cover 42 to rotate, thereby achieving centrifugal dust removal. When the rotating mechanism 8 drives the transmission tube 41 to rotate counterclockwise, the transmission tube 41 cannot drive the polygonal prism 411 to rotate, and the rotating cover 42 remains stationary with the bottom tube 1. The bidirectional screw 413 rotates relative to the first moving column 49, causing the first moving column 49 to move up and down, thereby adjusting the air guide plate 442. The rotating mechanism 8 drives the transmission tube 41 to rotate, thereby causing the dust collection cover 451 to revolve, thereby filtering and removing fine dust. When the drive rod 414 is fixed, if the transmission tube 41 continues to rotate, the second moving column 410 rotates relative to the drive rod 414, causing the second moving column 410 to move upward, thereby achieving the purpose of removing dust from the inside of the top tube 3. By driving the transmission tube 41 to rotate through the rotating mechanism 8, the agitation component 44 and the dust collection component 45 rotate, thereby improving the efficiency of centrifugal dust removal. Fine dust with low impact on centrifugal dust collection is directly collected. Both share a single power system, resulting in high integration and reduced footprint. Finally, the drive rod 414 rotates relative to the second moving column 410, causing the second moving column 410 to move upward, which in turn pulls the pull rope 466, causing the pressure ring 465 to move upward, which in turn causes the top cone sleeve 464 to move upward, allowing the filling block 462 and the guide ring 461 to engage with each other, thereby controlling the height of the dust sweeping plate 444. This allows the dust sweeping plate 444 to move closer to or away from the inner wall of the expansion tube 2. Guided by the guide ring 461 and the filling block 462, the dust sweeping plate 444 can move away from or closer to the inner wall of the expansion tube 2. This allows the dust sweeping plate 444 to move away from the inner wall of the expansion tube 2 at high speed and closer to the inner wall of the expansion tube 2 at low speed, avoiding the dust sweeping plate 444 constantly adhering to the inner wall of the expansion tube 2, which would affect the service life of the components. At the same time, it avoids the problem of dust being stirred up and affecting the centrifugal dust collection efficiency when sweeping the inner wall of the expansion tube 2 at high speed.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment device for magnetic material processing, comprising a bottom pipe (1), an expansion pipe (2), and a top pipe (3) detachably connected from bottom to top, with their inner cavities interconnected, characterized in that: The bottom pipe (1) is provided with a collection mechanism (4) on its inner side, and the top pipe (3) is provided with a filter element (7) on its inner side. The collection mechanism (4) includes a transmission pipe (41), a rotating rod (412), and a rotating cover (42) that are distributed vertically and connected to each other. The transmission pipe (41) passes through the inner cavity of the bottom pipe (1), the expansion pipe (2), and the top pipe (3). The outer side of the rotating cover (42) is unidirectionally rotatably connected to the inner side of the expansion pipe (2). The upper wall of the rotating cover (42) is fixedly connected with several annularly distributed air guide pipes (43) through mounting holes. Several vertically distributed dust collection components (45) are provided on the outer side of the transmission pipe (41), and the dust collection components (45) are located on the inner side of the top pipe (3). The rear side of the expansion pipe (2) is provided with a rotating mechanism (8) for driving the transmission pipe (41) to rotate. The rotating mechanism (8) drives the transmission tube (41) to rotate, which in turn drives the rotating cover (42) to rotate, causing the gas guide tube (43) to revolve. The gas to be treated enters the expansion tube (2) and the inner cavity of the top tube (3) through the gas guide tube (43), and after centrifugation and filtration, it finally passes through the filter element (7) to adsorb a small amount of acidic gas, thereby achieving waste gas treatment.

2. The waste gas treatment device for magnetic material processing according to claim 1, characterized in that: A number of ring-shaped agitation components (44) are fixedly connected to the outside of the transmission tube (41), and the agitation components (44) are located inside the expansion tube (2). The agitation components (44) include a support frame (441) fixedly connected to the outside of the transmission tube (41), and a number of vertically distributed air guide plates (442) are rotatably connected to the inside of the support frame (441).

3. The waste gas treatment device for magnetic material processing according to claim 2, characterized in that: The inner side of the transmission tube (41) is movably sleeved with a first movable column (49), and the inner side of the first movable column (49) is threaded with a bidirectional screw (413). Several air guide plates (442) are fixedly connected to a first gear (443) at one end near the first movable column (49), and the first gear (443) passes through the side wall of the transmission tube (41) and enters the interior of the transmission tube (41). The outer side of the first movable column (49) is fixedly connected with a first rack that meshes with the first gear (443).

4. The waste gas treatment device for magnetic material processing according to claim 3, characterized in that: The lower end of the bidirectional screw (413) is fixedly connected to a polygonal prism (411) that is unidirectionally rotatably connected to the transmission tube (41). The rotatable direction of the polygonal prism (411) relative to the transmission tube (41) is opposite to the rotatable direction of the rotating cover (42) relative to the bottom tube (1). The outer side of the polygonal prism (411) is movably sleeved in the transmission hole opened at the upper end of the rotating rod (412). The lower end of the rotating rod (412) is fixedly connected to the upper side of the rotating cover (42).

5. The waste gas treatment device for magnetic material processing according to claim 3, characterized in that: The dust collection assembly (45) includes several annularly distributed dust collection hoods (451) fixedly connected to the outside of the transmission pipe (41). The upper walls of the dust collection hoods (451) are all embedded with dust-proof nets. The bottom inner sides of the dust collection hoods (451) are rotatably connected with augers (452). The outer side of the dust collection hoods (451) is fixedly connected with a retaining ring that fits against the inner wall of the top pipe (3). The retaining ring has a dust outlet hole that connects to the inner cavity of the dust collection hoods (451). The outer side of the top pipe (3) is fixedly connected with a second dust collection hood (6). The outer wall of the top pipe (3) has a hole that connects the inner cavity of the second dust collection hood (6) and the dust removal hole.

6. The waste gas treatment device for magnetic material processing according to claim 5, characterized in that: The inner side of the transmission tube (41) is movably sleeved with a second moving column (410) located on the upper side of the first moving column (49). A second gear (453) is fixedly connected to one end of each of the augers (452) near the second moving column (410). The second gear (453) passes through the side wall of the transmission tube (41) and enters the interior of the transmission tube (41). A second rack that meshes with the second gear (453) is fixedly connected to the outer side of the second moving column (410). A fixed frame (48) is fixedly connected to the inner side of the jacking pipe (3). The outer side of the transmission pipe (41) is rotatably connected to the inner side of the fixed frame (48). An electrically controlled stationary drive rod (414) is rotatably connected to the lower side of the fixed frame (48). The drive rod (414) passes through the upper end of the transmission pipe (41) and enters the drive hole at the upper end of the second moving column (410). When the second moving column (410) rotates relative to the drive rod (414), the second moving column (410) moves upward.

7. The waste gas treatment device for magnetic material processing according to claim 2, characterized in that: A dust-sweeping plate (444) is sleeved on the inner side of the outer vertical groove of the support frame (441). The inner lower surface of the expansion tube (2) is an inverted cone surface. An air baffle plate (47) is fixedly connected to the inner lower surface of the expansion tube (2). The air baffle plate (47) is annular. There is a gap between the lower side of the air baffle plate (47) and the inner lower surface of the expansion tube (2). A first dust collection hood (5) is fixedly connected to the outer side of the expansion tube (2). A discharge hole is opened at the bottom of the outer side of the bottom tube (1) to connect the first dust collection hood (5) and the inner cavity of the expansion tube (2).

8. The waste gas treatment device for magnetic material processing according to claim 7, characterized in that: The support frame (441) has several vertically distributed guide grooves (445) on the inner side of the outer vertical groove for guiding the dust sweeping plate (444). When the support frame (441) moves up and down, the dust sweeping plate (444) moves closer to or away from the inner wall of the expansion tube (2). The bottom inner side of the expansion tube (2) is fixedly connected to a drive assembly (46). The drive assembly (46) includes a guide ring (461) and several annularly distributed filling blocks (462) nested therewith. The lower side of (461) is fixedly connected to the inner bottom of the expansion tube (2) and is located on the outer side of the baffle plate (47). The upper side of the guide ring (461) is provided with a number of annularly distributed inclined guide surfaces of the upward-pushing dust sweeping plate (444). The upper surface of the filling block (462) is used to extend the inclined guide surfaces to further push the dust sweeping plate (444). An elastic adsorption member is provided between the dust sweeping plate (444) and the support frame (441) to fix the dust sweeping plate (444) at the highest position.

9. The waste gas treatment device for magnetic material processing according to claim 8, characterized in that: Several filling blocks (462) are fixedly connected to a push rod (463) on the side near the transmission tube (41). Several push rods (463) are provided with elastic elements that pull them closer to each other between the inner wall and the lower surface of the expansion tube (2). A top cone sleeve (464) driven by a spring is sleeved on the outer side of the rotating rod (412). When the top cone sleeve (464) moves up, it pushes the filling blocks (462) away from each other. A pressure ring (465) driven by a spring is sleeved on the bottom of the outer side of the transmission tube (41). When the pressure ring (465) is in the lowest position, the pressure ring (465) presses down on the top cone sleeve (464) to keep it in the lowest position. A pull rope (466) is fixedly connected between the upper side of the pressure ring (465) and the lower side of the second moving column (410). The pull rope (466) passes through the side wall of the transmission tube (41) and moves in the inner cavity of the transmission tube (41).

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