Dust removal structure for neodymium iron boron sheet crucible slag removal process

Abstract

The invention relates to the technical field of crucible dust collection, in particular to a dust collection structure for a neodymium iron boron sheet crucible slag removal procedure, which comprises a dust collection pipe, the upper part of the dust collection pipe is tubular, the lower part of the dust collection pipe is conical, and two spraying units which are symmetrically arranged left and right are arranged on the conical structure of the dust collection pipe; the rotatable water pipe is adopted to drive the spray pipes distributed in the circumferential direction to rotate synchronously, cooling water mist is continuously sprayed into the dust suction pipe through the two atomization nozzles on the spray pipes, active cooling is achieved, and the service life of equipment is prolonged; the rotating cylinder is adopted to drive the vortex-line-shaped pushing plate to rotate, raised dust is pushed outwards in the radial direction of the dust suction pipe through the outwards-protruding arc-shaped face of the pushing plate, dust is forced to be close to a spraying area quickly, the mixing efficiency of the raised dust and water mist is remarkably improved, the cooling effect is improved, and the dust removal efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of crucible dust suction, and specifically to a dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible. Background Art

[0002] In the production process of neodymium iron boron thin sheets, after each furnace melting is completed, the melting crucible needs to be cooled and slag cleaned. The current mainstream process uses a blower to forcibly air-cool the high-temperature crucible, and at the same time uses a dust suction pipe based on the Venturi effect to suck the dust generated during the slag cleaning process.

[0003] The existing dust removal structure usually uses a dust suction pipe with a conical lower part in cooperation with a suction unit to complete the operation. During operation, the conical structure of its dust suction port is aligned with the crucible mouth, and the suction unit forms a negative pressure area in the dust suction pipe through the Venturi effect, sucking the dust from the crucible into the pipeline interior, and the dust enters the tubular section of the dust suction pipe with the air flow and is directly transported to an external collection device.

[0004] However, the existing solution still has key deficiencies: the cooling speed of the blower for the crucible is slow, resulting in too high dust temperature during slag cleaning, and there is no active cooling structure inside the dust suction pipe, causing high-temperature dust to directly contact the components in the pipeline that are not resistant to high temperature, easily causing thermal deformation or aging failure, shortening the equipment life, and there is a risk of combustion and explosion of neodymium iron boron dust in a high-temperature environment, exacerbating the production safety hazards. In addition, the entire process relies on air flow power to complete dust collection, and the efficiency needs to be improved.

[0005] Therefore, there is an urgent need for a dust removal structure that can mainly reduce the dust temperature and improve the suction efficiency when sucking dust. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible, including a dust suction pipe. The upper part of the dust suction pipe is tubular and the lower part is conical. A spray unit is provided on the conical structure of the dust suction pipe, and a mixing unit for mixing dust and water mist is provided on the tubular structure of the dust suction pipe.

[0007] The spray unit includes two water pipes arranged left and right and rotatably provided on the conical inner side wall of the dust suction pipe through a connection component. The inclination direction of the water pipes matches the conical shape of the dust suction pipe. Two groups of disturbance plates are equidistantly arranged along the circumferential direction on the cylindrical surface of the water pipes. A switching component for switching the inclination state and the vertical state of the disturbance plates is provided on the water pipes. A number of spray pipes sliding radially along the water pipes are arranged along the axial direction of the water pipes, and atomizing nozzles are provided at both ends of the spray pipes.

[0008] The mixing unit includes a rotating cylinder rotatably provided at the coaxial position of the tubular structure of the dust suction pipe. Two pushing plates arranged equidistantly along the circumferential direction of the rotating cylinder are slidably provided up and down on the lower side of the cylindrical surface of the rotating cylinder.

[0009] During vacuuming, the dust in the crucible is sucked through the vacuum pipe, and at the same time, water is sprayed into the vacuum pipe through the nozzle. At the same time, the rotating drum drives the push plate to mix the dust with the water mist, thereby cooling the dust and air.

[0010] Preferably, the nozzles on the same water pipe have a small spacing at the bottom and a large spacing at the top, and arc-shaped baffles are fixedly installed on the outside of the nozzles and on both sides of the water inlet.

[0011] Preferably, the connecting assembly includes a support plate fixedly mounted on the lower side of the conical inner wall of the dust suction pipe, and a support bracket fixedly mounted on the upper side of the conical inner wall of the dust suction pipe, and the water pipe is rotatably connected between the corresponding support plate and the support bracket.

[0012] Preferably, a water inlet is provided in the middle of the nozzle, and the water inlet positions of the nozzles on the same water pipe are fixedly connected with a linkage rod. A fixed block extending into the upper end of the water pipe is fixedly installed inside the support bracket, and a side of the fixed block close to the axis of the dust suction pipe is slidably connected with a support plate, and a coil spring is provided between the support plate and the fixed block.

[0013] Preferably, each set of disturbance plates consists of a plurality of disturbance plates arranged along the axial direction of the water pipe and rotatably connected thereto, and the disturbance plates are located between two adjacent nozzles.

[0014] Preferably, the switching assembly includes a swing plate, a swing plate is fixedly mounted on the disturbance plate, the ends of the swing plates on the same group of disturbance plates are hingedly connected to a synchronization plate, two sliding members are provided on the lower side of the cylindrical surface of the water pipe for axial sliding along the lower side, and the upper end of the sliding member is hinged to the lower end of the corresponding synchronization plate through a push-pull plate.

[0015] Preferably, an arc-shaped guide groove coaxially arranged with the water pipe is provided inside the support plate, and the lower side of the sliding member is slidably connected to the corresponding arc-shaped guide groove through a protruding column.

[0016] Preferably, the side of the push plate away from the rotating cylinder is an inclined surface structure that gradually tilts outward from top to bottom, the push plate as a whole is a vortex plate structure, and a return spring is provided between the upper side of the push plate and the rotating cylinder.

[0017] Preferably, a fixing rod extending into the rotating cylinder is fixedly mounted on the tubular structure of the dust suction pipe, and two wedge-shaped blocks for pushing the push plate upward are fixedly mounted at equal intervals along the circumference of the lower side of the cylindrical surface of the fixing rod.

[0018] Preferably, the push plate is provided with a plurality of through slots arranged in an array, a toggle plate is hinged on the through slot, a toggle plate is provided between the toggle plate and the push plate, and the toggle plate extends to the outside of the push plate toward the outer convex arc surface of the push plate.

[0019] The beneficial effects of the present invention are: 1. The present invention adopts a rotatable water pipe to drive the circumferentially distributed nozzles to rotate synchronously, and continuously sprays cooling water mist into the dust suction pipe through the two atomizing nozzles on the nozzles, so that the high-temperature dust is fully in contact with the water mist, realizing active cooling, effectively avoiding thermal damage to plastic parts by high-temperature dust, extending the life of the equipment, and reducing the risk of NdFeB dust explosion.

[0020] 2. The present invention uses a rotating drum to drive the vortex-shaped push plate to rotate. The convex arc surface of the push plate pushes the dust radially outward along the dust suction pipe, forcing the dust to quickly approach the spray area, significantly accelerating the mixing efficiency of dust and water mist, and improving the cooling effect.

[0021] 3. The present invention adopts a supporting plate to elastically press the linkage rod through a coil spring, so that the nozzle always moves toward the axis of the dust suction pipe. On the one hand, it can prevent a large amount of water mist from splashing onto the conical inner wall of the dust suction pipe, causing water waste and scaling. On the other hand, it can concentrate the water mist on the dust-intensive position in the dust suction pipe, quickly combine with the high-concentration dust, and maximize the cooling efficiency.

[0022] 4. The present invention adopts a sliding part in combination with an arc-shaped guide groove, so that when the disturbance plate that rotates synchronously with the water pipe rotates to a position close to the axis of the dust collection pipe, the disturbance plate is in a vertical posture, thereby disturbing the dust and water mist and enhancing the mixing. When the disturbance plate rotates to a position away from the axis of the dust collection pipe, the disturbance plate tilts to form a rotor structure, pushing the airflow upward, enhancing the suction power, and improving the dust removal rate.

[0023] 5. The present invention uses a toggle plate that is initially tilted and rotates with the push plate. The toggle plate shovels dust to accelerate the suction efficiency. In addition, the wedge block periodically lifts the push plate, causing it to shake up and down, which can shake off the dust adhering to the outer convex surface of the push plate, ensuring the suction volume. At the same time, it drives the toggle plate to overcome the resistance of the torsion spring and deflect upward, dynamically toggle the water mist and smoke, further accelerating the mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a partial cross-sectional view of the dust suction pipe, rotating drum, water pipe and disturbance plate in the present invention.

[0027] Figure 3 It is a partial cross-sectional view of the support plate, support bracket, water pipe and nozzle in the present invention.

[0028] Figure 4 It is a partial cross-sectional view of the support bracket, water pipe, abutment plate and nozzle in the present invention.

[0029] Figure 5 It is a partial cross-sectional view of the support plate, arc-shaped guide groove, disturbance plate and synchronization plate in the present invention.

[0030] Figure 6 It is a partial cross-sectional view of the dust suction pipe, rotating cylinder, fixing rod and pushing plate in the present invention.

[0031] Figure 7 It is a partial cross-sectional view of the rotating cylinder, the fixed rod, the wedge block and the toggle plate in the present invention.

[0032] In the figure: 1. Dust suction pipe; 2. Spray unit; 3. Mixing unit; 21. Connecting assembly; 22. Water pipe; 23. Spray pipe; 31. Rotating cylinder; 32. Push plate; 211. Support plate; 212. Support bracket; 221. Disturbing plate; 222. Swinging plate; 223. Synchronizing plate; 224. Sliding member; 225. Push-pull plate; 226. Arc guide groove; 231. Linking rod; 232. Fixed block; 233. Abutting plate; 234. Arc baffle; 311. Fixed rod; 312. Wedge block; 321. Toggle plate. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in detail. The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in the art or in the product specifications shall be followed.

[0034] See Figure 1 A dust removal structure for the slag cleaning process of NdFeB thin film crucible includes a dust suction pipe 1, the upper part of the dust suction pipe 1 is tubular and the lower part is conical. Two spray units 2 arranged symmetrically on the left and right are provided on the conical structure of the dust suction pipe 1. A mixing unit 3 for mixing dust and water mist is provided on the tubular structure of the dust suction pipe 1.

[0035] When it is necessary to vacuum the crucible during cleaning, the operator aligns the conical structure at the bottom of the vacuum tube 1 with the crucible mouth, and forms a negative pressure in the vacuum tube 1 through the Venturi effect, thereby sucking the dust in the crucible into the inside, and making the dust move along the vacuum tube 1 to the inside of the external collection device. At the same time, cooling water mist is sprayed into the conical structure of the vacuum tube 1 through the spray unit 2 to quickly reduce the temperature of the dust, and the dust is quickly promoted to combine with the water mist through the mixing unit 3, thereby improving the cooling and suction efficiency.

[0036] See Figure 1 、 Figure 2 and Figure 3, the spray unit 2 includes a water pipe 22 rotatably arranged on the conical inner side wall of the dust suction pipe 1 through a connecting component 21. The inclination direction of the water pipe 22 matches the conical shape of the dust suction pipe 1. A number of spray pipes 23 sliding radially along the water pipe 22 are arranged along the axial direction of the water pipe 22. A water inlet is provided in the middle of the spray pipe 23, and atomizing nozzles are arranged at both ends of the spray pipe 23. The lower spacing of several spray pipes 23 on the same water pipe 22 is small, and the upper spacing is large.

[0037] Continue to refer to Figure 1 , Figure 2 and Figure 3 , the connecting component 21 includes a support plate 211 fixedly installed on the lower side of the conical inner wall of the dust suction pipe 1, and a support bracket 212 fixedly installed on the upper side of the conical inner wall of the dust suction pipe 1. The water pipe 22 is rotatably connected between the corresponding support plate 211 and the support bracket 212.

[0038] It should be noted that the interior of the support bracket 212 is arranged in two layers. The upper end of the water pipe 22 penetrates from the lower layer to the upper layer of the support bracket 212, so that the upper end of the water pipe 22 is communicated with the upper layer of the support bracket 212. The upper layer of the support bracket 212 is communicated with the existing water supply device. In this embodiment, two symmetrically arranged actuating motors are fixedly installed on the conical outer wall of the dust suction pipe 1. A belt is connected between the output shaft of the actuating motor and the upper end of the corresponding water pipe 22, and the belt is located inside the lower layer of the support bracket 212.

[0039] When the dust suction pipe 1 starts to suck the dust inside the crucible, the actuating motor is started to drive the water pipe 22 to rotate. At the same time, water is pumped into the upper layer of the support bracket 212 through the existing water supply device. Then the water flow reaches the inside of the spray pipe 23 through the water pipe 22. Then the cooling water is sprayed into the inside of the dust suction pipe 1 through the atomizing nozzles at both ends of the spray pipe 23, so that the cooling water is mixed with the dust sucked by the dust suction pipe 1, thereby cooling the dust.

[0040] And because the lower spacing of several spray pipes 23 on the same water pipe 22 is small and the upper spacing is large, the water mist in the lower part of the conical structure of the dust suction pipe 1 is dense, and the water mist in the upper part is relatively dense compared with the upper part. Thus, the dust just entering the inside of the dust suction pipe 1 is quickly cooled, and the water mist density is reduced as the dust moves up, which can prevent the dust from mixing with the water mist excessively, resulting in the agglomeration and adhesion of the dust on the inner wall of the dust suction pipe 1.

[0041] Refer to Figure 1 , Figure 6 and Figure 7, the mixing unit 3 includes a rotating cylinder 31 rotatably arranged at the coaxial position of the tubular structure of the dust suction pipe 1. Two pushing plates 32 arranged at equal intervals in the circumferential direction of the rotating cylinder 31 are slidably arranged up and down on the lower side of the cylindrical surface of the rotating cylinder 31. The side of the pushing plate 32 away from the rotating cylinder 31 is a slope structure that gradually inclines outward from top to bottom. The pushing plate 32 is integrally in the shape of a spiral plate. A return spring is arranged between the upper side of the pushing plate 32 and the rotating cylinder 31.

[0042] It should be noted that an asynchronous motor is fixedly installed on the front side of the tubular structure of the dust suction pipe 1, and the output shaft of the asynchronous motor is connected to the upper part of the rotating cylinder 31 through a belt.

[0043] After the cooling water is ejected from the spray pipe 23, start the asynchronous motor to drive the rotating cylinder 31 to rotate, so that the rotating cylinder 31 drives the pushing plate 32 thereon to rotate synchronously, and makes the pushing plate 32 rotate towards the convex side of its own spiral plate structure. Thus, when the spiral plate structure of the pushing plate 32 rotates, the dust in the middle of the dust suction pipe 1 is pushed outward, and then the dust quickly moves towards the direction close to the spray pipe 23, thereby accelerating the mixing of the dust and the atomized cooling water, and further increasing the cooling speed of the dust.

[0044] Refer to Figure 2 、 Figure 3 and Figure 4 , a linkage rod 231 is fixedly connected to the water inlet positions of the spray pipes 23 on the same water pipe 22. A fixing block 232 extending into the upper end of the water pipe 22 is fixedly installed inside the support bracket 212. A resisting plate 233 is slidably connected to the side of the fixing block 232 close to the axis of the dust suction pipe 1. A spiral spring is arranged between the resisting plate 233 and the fixing block 232. Arc-shaped baffles 234 are fixedly installed on both sides of the spray pipe 23 outside the water inlet.

[0045] When the water pipe 22 drives the spray pipes 23 thereon to rotate to a horizontal arrangement, the spiral spring pushes the resisting plate 233 away from the fixing block 232 through its own elastic force, so that the resisting plate 233 pushes the linkage rod 231 towards the direction close to the axis of the dust suction pipe 1. The linkage rod 231 drives the spray pipes 23 on the same water pipe 22 to move towards the direction close to the axis of the dust suction pipe 1 until the arc-shaped baffles 234 on the spray pipes 23 abut against the inner wall of the water pipe 22.

[0046] This makes the middle part of the spray pipe 23 deviate towards the side close to the axis of the dust suction pipe 1 relative to the axis of the water pipe 22, so that the nozzles on the side of the spray pipe 23 close to the axis of the dust suction pipe 1 can spray the cooling water to the middle part of the dust suction pipe 1 as much as possible, enabling the cooling water mist to quickly combine with the dust, further improving the cooling efficiency. At the same time, the nozzles on the side of the spray pipe 23 away from the axis of the dust suction pipe 1 can avoid spraying the cooling water onto the inner wall of the dust suction pipe 1 as much as possible, thereby preventing the cooling water from dripping along the inner wall of the dust suction pipe 1.

[0047] When the water pipe 22 rotates continuously, the water pipe 22 drives the linkage rod 231 to rotate synchronously through the nozzle 23, so that the linkage rod 231 pushes against the abutting plate 233 and compresses the helical spring. When the water pipe 22 rotates close to half a turn, the helical spring pushes the abutting plate 233 again through its own elastic force, so that the nozzle 23 moves again in the direction close to the axis of the dust suction pipe 1. Furthermore, the nozzle 23 can effectively concentrate the spraying of the cooling water mist towards the position close to the middle of the dust suction pipe 1 while rotating and spraying the cooling water mist, ensuring the combination efficiency of the water mist and the dust.

[0048] Refer to Figure 2 and Figure 3 , two groups of disturbing plates 221 are arranged at equal intervals along the circumferential direction on the cylindrical surface of the water pipe 22. Each group consists of a number of disturbing plates 221 rotatably connected thereto along the axial direction of the water pipe 22. The disturbing plates 221 are located between two adjacent nozzles 23.

[0049] Refer to Figure 3 and Figure 5 , a switching assembly for switching the inclined state and the vertical state of the disturbing plate is arranged on the water pipe. The switching assembly includes a swinging plate 222. A swinging plate 222 is fixedly installed on the disturbing plate 221. The ends of the swinging plates 222 on the same group of disturbing plates 221 are jointly hinged to a synchronizing plate 223. Two sliding members 224 are slidably arranged along the axial direction on the lower side of the cylindrical surface of the water pipe 22. The upper ends of the sliding members 224 are hinged to the lower ends of the corresponding synchronizing plates 223 through push-pull plates 225.

[0050] Continue to refer to Figure 3 and Figure 5 , an arc-shaped guide groove 226 arranged coaxially with the water pipe 22 is formed inside the support plate 211. The lower sides of the sliding members 224 are slidably connected to the corresponding arc-shaped guide grooves 226 through protruding columns.

[0051] It should be noted that the arc-shaped guide groove 226 in this embodiment has a closed-loop structure and is composed of two relatively arranged arc segments and two relatively arranged spiral segments. The two arc segments are arranged vertically offset, and the two spiral segments are used to connect the two arc segments.

[0052] When the water pipe 22 starts to rotate, the water pipe 22 drives the disturbing plates 221 and the sliding members 224 thereon to rotate synchronously, so that the sliding members 224 drive the protruding columns thereon to slide along the trajectories of the corresponding arc-shaped guide grooves 226. When a group of disturbing plates 221 rotates to the side close to the axis of the dust suction pipe 1, the sliding member 224 corresponding to this group of disturbing plates 221 drives the protruding column thereon to move into the lower arc segment inside the arc-shaped guide groove 226, so that the sliding member 224 drives the lowermost swinging plate 222 to deflect through the push-pull plate 225, and the lowermost swinging plate 222 drives the lowermost disturbing plate 221 to rotate to the vertical posture.

[0053] Meanwhile, the lowermost swing plate 222 drives all the swing plates 222 in the same group to rotate synchronously through the synchronizing plate 223, so that a group of disturbing plates 221 on the side close to the axis of the dust suction pipe 1 all rotate to the vertical posture. At the same time, another group of disturbing plates 221 on the same water pipe 22 rotate to the side far from the axis of the dust suction pipe 1, so that the corresponding sliding member 224 drives the convex column thereon to move into the upper arc section of the arc-shaped guide groove 226. For the same reason as above, a group of disturbing plates 221 on the side far from the axis of the dust suction pipe 1 rotate to the inclined posture.

[0054] Subsequently, the water pipe 22 drives the two groups of disturbing plates 221 thereon to continue rotating, so that the disturbing plates 221 in the vertical posture disturb the dust and water mist inside the dust suction pipe 1, thereby accelerating the air flow inside the dust suction pipe 1, further enhancing the mixing efficiency of the water mist and the dust, increasing the speed of dust cooling, and at the same time, a group of disturbing plates 221 in the inclined posture are in a rotor structure. By rotating the disturbing plates 221 in the inclined posture, the air flow at the position far from the axis of the dust suction pipe 1 can be pushed to rise, enhancing the suction power and improving the dust removal rate.

[0055] When the water pipe 22 rotates half a turn, the positions of a group of disturbing plates 221 originally in the inclined posture and a group of disturbing plates 221 originally in the vertical posture are interchanged, and at the same time, the positions of the corresponding sliding members 224 are interchanged, so that the two sliding members 224 on the same water pipe 22 alternate up and down along the arc-shaped guide groove 226. For the same reason as above, so that a group of disturbing plates 221 rotating to the side close to the axis of the dust suction pipe 1 are still in the vertical posture, and a group of disturbing plates 221 rotating to the side far from the axis of the dust suction pipe 1 are still in the inclined posture, thereby continuously increasing the mixing efficiency of the water mist and the dust and continuously accelerating the air flow to rise.

[0056] Refer to Figure 2 、 Figure 6 and Figure 7 As shown in, on the tubular structure of the dust suction pipe 1, a fixed rod 311 extending into the inside of the rotating cylinder 31 is fixedly installed, and two wedge-shaped blocks 312 for upwardly pushing the push plate 32 are fixedly installed at equal intervals along the circumferential direction on the lower side of the cylindrical surface of the fixed rod 311.

[0057] When the rotating cylinder 31 starts to rotate, the rotating cylinder 31 drives the push plate 32 to rotate around the fixed rod 311. When the part of the push plate �2 inside the rotating cylinder 31 contacts the inclined surface of the wedge-shaped block 312, the continuously rotating push plate 32 moves upward along the inclined surface of the wedge-shaped block 312 and compresses the return spring. When the push plate 32 rotates to a position where it does not contact the wedge-shaped block 312, the return spring pushes the push plate 32 to fall rapidly, thereby causing the push plate 32 to vibrate, so as to shake off the dust adhering to the outer convex arc surface of the push plate 32 and ensure the suction volume.

[0058] Refer to Figure 6 andFigure 7 The push plate 32 is provided with a plurality of through slots arranged in an array, and a toggle plate 321 is hinged on the through slot. A torsion spring is provided between the toggle plate 321 and the push plate 32. The torsion spring is not shown in the figure. The toggle plate 321 extends to the outside of the push plate 32 toward the outer convex arc surface of the push plate 32.

[0059] In the initial state, the torsion spring pushes the lower side of the toggle plate 321 to fit against the lower side of the corresponding through groove through its own elastic force, and at this time, the side of the toggle plate 321 with the same rotation direction is lower than the side with the opposite rotation direction. As a result, when the push plate 32 drives the toggle plate 321 to rotate, the toggle plate 321 can shovel the dust and airflow through its own upper inclined surface, so that the dust and airflow move upward along the through groove, thereby further accelerating the upward flow of the airflow and improving the suction efficiency.

[0060] When the push plate 32 moves downward rapidly, the shifting plate 321 overcomes the resistance of the torsion spring and deflects upward under the action of inertia, so that the push plate 32 dynamically shifts the water mist and smoke, further accelerating the mixing.

[0061] See Figures 1 to 7 When sucking the smoke and dust generated by cleaning the crucible, the present invention also includes the following steps: In the first step, the operator aligns the conical structure at the lower part of the dust suction pipe 1 with the crucible mouth, and forms a negative pressure in the dust suction pipe 1 through the Venturi effect, thereby sucking the dust in the crucible into the interior thereof, and causing the dust to move along the dust suction pipe 1 to the inside of the external collection device.

[0062] In the second step, the execution motor is started to drive the water pipe 22 to start rotating. At the same time, water is sprayed into the interior of the dust collection pipe 1 through the atomizing nozzles at both ends of the nozzle 23 through the existing water supply device. The asynchronous motor is started to drive the rotating cylinder 31 to rotate, so that the pushing plate 32 pushes the dust in the middle of the dust collection pipe 1 outward, thereby accelerating the mixing of the dust and the cooling water after atomization.

[0063] In the third step, the water pipe 22 drives the nozzle 23 thereon to rotate and spray cooling water mist, and by pushing the linkage rod 231 against the abutment plate 233, the cooling water mist is sprayed to the middle of the dust suction pipe 1 as much as possible, thereby increasing the mixing effect of the cooling water mist and the dust, and effectively avoiding the cooling water mist from being sprayed onto the inner wall of the dust suction pipe 1, thereby preventing the cooling water from dripping along the inner wall of the dust suction pipe 1.

[0064] In the fourth step, the water pipe 22 drives the disturbance plates 221 thereon to rotate synchronously, and a group of disturbance plates 221 close to the axis of the dust suction pipe 1 rotates in a vertical posture, and a group of disturbance plates 221 away from the axis of the dust suction pipe 1 rotates in an inclined posture, further enhancing the mixing of water mist and dust, and pushing the airflow upward, enhancing the suction power, and improving the dust removal rate.

[0065] Step 5: The rotating cylinder 31 drives the shifting plate 321 to rotate through the pushing plate 32. The shifting plate 321 can shovel the dust and airflow through the inclined plane on its upper side, so that the dust and airflow move upward along the through groove, further accelerating the upward movement of the airflow and improving the suction efficiency.

[0066] Step 6: The rotating cylinder 31 drives the pushing plate 32 to move upward along the inclined plane of the wedge block 312 and compress the return spring. Subsequently, the return spring pushes the pushing plate 32 to fall rapidly, causing the pushing plate 32 to vibrate, so as to shake off the dust adhering to the outer convex arc surface of the pushing plate 32 and ensure the suction volume.

[0067] Step 7: When the pushing plate 32 moves downward rapidly, the shifting plate 321 deflects upward against the resistance of the torsion spring under the action of inertia, so that the pushing plate 32 dynamically shifts the water mist and smoke and dust, further accelerating the mixing.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. A dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible, including a dust suction pipe. The upper part of the dust suction pipe is tubular and the lower part is conical. It is characterized in that, The conical structure of the dust suction pipe is provided with two spray units arranged symmetrically on the left and right, and the tubular structure of the dust suction pipe is provided with a mixing unit for mixing dust and water mist; The spray unit includes a water pipe rotatably mounted on the conical inner side wall of the dust suction pipe via a connecting assembly, the inclination direction of the water pipe matching the conical shape of the dust suction pipe, two sets of disturbance plates equidistantly spaced along the circumference of the cylindrical surface of the water pipe, a switching assembly for switching the disturbance plates between an inclined state and a vertical state, a plurality of nozzles radially sliding along the water pipe are arranged along the axial direction of the water pipe, and atomizing nozzles are provided at both ends of the nozzles; The mixing unit comprises a rotating drum rotatably arranged at a coaxial position of the tubular structure of the dust collection pipe, and two push plates equidistantly arranged along the circumference of the rotating drum are slidably arranged on the lower side of the cylindrical surface of the rotating drum; During vacuuming, the dust in the crucible is sucked through the vacuum pipe, and at the same time, water is sprayed into the vacuum pipe through the nozzle. At the same time, the rotating drum drives the push plate to mix the dust with the water mist, thereby cooling the dust and air.

2. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 1, characterized in that, The nozzles on the same water pipe have a small spacing at the bottom and a large spacing at the top. Arc baffles are fixedly installed on the outside of the nozzles and on both sides of the water inlet.

3. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 1, characterized in that, The connecting assembly includes a support plate fixedly mounted on the lower side of the conical inner wall of the dust suction pipe, and a support bracket fixedly mounted on the upper side of the conical inner wall of the dust suction pipe, and the water pipe is rotatably connected between the corresponding support plate and the support bracket.

4. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 3, characterized in that, A water inlet is provided in the middle of the nozzle, and the water inlet positions of the nozzles on the same water pipe are fixedly connected with a linkage rod. A fixed block extending into the upper end of the water pipe is fixedly installed inside the support bracket, and a supporting plate is slidably connected to the side of the fixed block close to the axis of the dust suction pipe, and a coil spring is provided between the supporting plate and the fixed block.

5. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 3, characterized in that, Each set of disturbance plates consists of a number of disturbance plates arranged along the axial direction of the water pipe and rotatably connected thereto, and the disturbance plates are located between two adjacent nozzles.

6. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 5, characterized in that, The switching assembly includes a swing plate, a swing plate is fixedly installed on the disturbance plate, the ends of the swing plates on the same group of disturbance plates are hingedly connected to a synchronization plate, two sliding parts are provided on the lower side of the cylindrical surface of the water pipe for axial sliding along the lower side, and the upper end of the sliding part is hinged to the lower end of the corresponding synchronization plate through a push-pull plate.

7. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 6, characterized in that, An arc-shaped guide groove coaxially arranged with the water pipe is provided inside the support plate, and the lower side of the sliding member is slidably connected to the corresponding arc-shaped guide groove through a protruding column.

8. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 1, characterized in that, The side of the push plate away from the rotating cylinder is in a slope structure that gradually tilts outward from top to bottom. The push plate as a whole is in a vortex plate structure. A return spring is provided between the upper side of the push plate and the rotating cylinder.

9. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 1, characterized in that, A fixing rod extending into the rotating cylinder is fixedly installed on the tubular structure of the dust suction pipe, and two wedge-shaped blocks for pushing the push plate upward are fixedly installed on the lower side of the cylindrical surface of the fixing rod at equal intervals along its circumference.

10. The dust removal structure for the slag cleaning process of a neodymium iron boron thin sheet crucible according to claim 1, wherein, The push plate is provided with a plurality of through slots arranged in an array, a toggle plate is hinged on the through slots, a torsion spring is provided between the toggle plate and the push plate, and the toggle plate extends to the outside of the push plate toward the outer convex arc surface of the push plate.

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