A dust removal structure for the slag cleaning process of NdFeB thin film crucible

Abstract

The present invention relates to the field of crucible dust collection technology, and specifically to a dust removal structure for the slag cleaning process of NdFeB thin film crucibles, comprising a dust collection pipe, the upper portion of the dust collection pipe is tubular and the lower portion is conical, two spray units symmetrically arranged on the left and right are provided on the conical structure of the dust collection pipe, and a mixing unit for mixing dust and water mist is provided on the tubular structure of the dust collection pipe. 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 collection pipe through the two atomizing nozzles on the nozzles, thereby achieving active cooling and extending the life of the equipment. The present invention adopts a rotating rotating cylinder to drive the vortex plate-shaped push plate to rotate, and the convex arc surface of the push plate pushes the dust radially outward along the dust collection pipe, forcing the dust to quickly approach the spray area, significantly accelerating the mixing efficiency of the dust and water mist, improving the cooling effect, and improving the dust removal efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of crucible dust collection, in particular to a dust removal structure used in a slag cleaning process of a NdFeB thin-sheet crucible. Background Art

[0002] During the production of NdFeB thin films, the crucible needs to be cooled and deslagging after each smelting process. The current mainstream process uses a blower to force air cooling on the high-temperature crucible, and uses a dust suction tube based on the Venturi effect to suck the dust generated during the deslagging process.

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

[0004] However, the existing solution still has key deficiencies: the blower cools the crucible slowly, resulting in excessively high dust temperatures during slag cleaning. There is no active cooling structure inside the dust collection tube, causing high-temperature dust to come into direct contact with heat-sensitive components in the tube, easily causing thermal deformation or aging failure, shortening equipment life. Furthermore, NdFeB dust poses a risk of combustion and explosion in high-temperature environments, exacerbating production safety risks. Furthermore, the entire process relies on airflow power to capture dust, and 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 NdFeB thin film 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 on the conical inner wall of the dust suction pipe, which are rotatably arranged through a connecting component. The inclination direction of the water pipe matches the cone of the dust suction pipe. Two groups of disturbance plates are arranged at equal intervals along the circumference of the cylindrical surface of the water pipe. The water pipe is provided with a switching component for switching the inclination state and the vertical state of the disturbance plate. The water pipe is provided with a plurality of nozzles sliding along the radial direction of the water pipe along its axial direction, and atomizing nozzles are provided at both ends of the nozzles.

[0008] The mixing unit comprises a rotating cylinder rotatably arranged at a coaxial position of the tubular structure of the dust collection pipe, and two pushing plates equidistantly arranged along the circumference of the rotating cylinder are slidably arranged 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 3The spray unit 2 includes a water pipe 22 that is rotatably arranged on the conical inner 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 plurality of nozzles 23 that slide radially along the water pipe 22 are arranged along the axial direction of the water pipe 22. A water inlet is opened in the middle of the nozzle 23, and atomizing nozzles are arranged at both ends of the nozzle 23. The lower spacing of the plurality of nozzles 23 on the same water pipe 22 is small, and the upper spacing is large.

[0037] Continue reading Figure 1 、 Figure 2 and Figure 3 The connecting assembly 21 includes a support plate 211 fixedly mounted on the lower side of the conical inner wall of the dust suction pipe 1, and a support bracket 212 fixedly mounted on the upper side of the conical inner wall of the dust suction pipe 1, and 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 divided into two layers, and the upper end of the water pipe 22 passes through the lower layer of the support bracket 212 to its upper layer, so that the upper end of the water pipe 22 is connected to the upper layer of the support bracket 212, and the upper layer of the support bracket 212 is connected to the existing water supply device. In this embodiment, two symmetrically arranged executive motors are fixedly installed on the conical outer wall of the vacuum tube 1, and a belt is connected between the output shaft of the executive 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 execution motor is started to drive the water pipe 22 to start rotating. At the same time, water is pumped into the upper layer of the support frame 212 through the existing water supply device. Then the water flows through the water pipe 22 to the inside of the nozzle 23, and then the cooling water is sprayed into the inside of the dust suction pipe 1 through the atomizing nozzles at both ends of the nozzle 23, so that the cooling water is mixed with the dust sucked by the dust suction pipe 1, thereby cooling the dust.

[0040] Moreover, since the lower spacing of the several nozzles 23 on the same water pipe 22 is small and the upper spacing is large, the water mist is dense at the lower part of the conical structure of the dust suction pipe 1 and relatively dense at the upper part, thereby quickly cooling the dust that has just entered the dust suction pipe 1. As the dust moves upward, the density of the water mist is reduced, which can prevent the dust from excessively mixing with the water mist, causing the dust to agglomerate and adhere to the pipe wall of the dust suction pipe 1.

[0041] See Figure 1 、 Figure 6 and Figure 7The mixing unit 3 includes a rotating cylinder 31 rotatably arranged at a coaxial position of the tubular structure of the dust collection tube 1. Two push plates 32 are arranged at equal intervals along the circumference of the rotating cylinder 31 and slide up and down on the lower side of the cylindrical surface of the rotating cylinder 31. The side of the push plate 32 away from the rotating cylinder 31 has an inclined surface structure that gradually tilts outward from top to bottom. The push plate 32 has a vortex plate-like structure as a whole, and a return spring is provided between the upper side of the push 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 sprayed out from the nozzle 23, the asynchronous motor is started to drive the rotating cylinder 31 to rotate, so that the rotating cylinder 31 drives the push plate 32 thereon to rotate synchronously, and the push plate 32 rotates toward the side of the convex outward of its own vortex plate structure, so that the vortex plate structure of the push plate 32 pushes the dust in the middle of the dust suction pipe 1 outward during rotation, and then the dust moves quickly toward the direction close to the nozzle 23, thereby accelerating the mixing of the dust and the cooling water after atomization, and further improving the cooling speed of the dust.

[0044] See Figure 2 、 Figure 3 and Figure 4 The water inlet position of the nozzle 23 on the same water pipe 22 is fixedly connected with a linkage rod 231. A fixed block 232 extending into the upper end of the water pipe 22 is fixedly installed inside the support bracket 212. The fixed block 232 is slidably connected with a supporting plate 233 on the side close to the axis of the dust suction pipe 1. A coil spring is provided between the supporting plate 233 and the fixed block 232. Arc-shaped baffles 234 are fixedly installed on the outside of the nozzle 23 and on both sides of the water inlet.

[0045] When the water pipe 22 drives the nozzle 23 thereon to rotate to the left and right arrangement, the coil spring pushes the abutment plate 233 away from the fixed block 232 through its own elastic force, so that the abutment plate 233 pushes the linkage rod 231 toward the direction close to the axis of the dust suction pipe 1, and the linkage rod 231 drives the nozzle 23 on the same water pipe 22 to move toward the direction close to the axis of the dust suction pipe 1 until the arc-shaped baffle 234 on the nozzle 23 abuts against the inner wall of the water pipe 22.

[0046] This causes the middle part of the nozzle 23 to be offset relative to the axis of the water pipe 22 toward the side close to the axis of the dust collection pipe 1, so that the nozzle of the nozzle 23 on the side close to the axis of the dust collection pipe 1 can spray cooling water to the middle part of the dust collection pipe 1 as much as possible, so that the cooling water mist and the dust are quickly combined, further improving the cooling efficiency. At the same time, the nozzle of the nozzle 23 on the side away from the axis of the dust collection pipe 1 can avoid spraying cooling water onto the inner wall of the dust collection pipe 1 as much as possible, thereby preventing the cooling water from dripping along the inner wall of the dust collection pipe 1.

[0047] When the water pipe 22 continues to rotate, the water pipe 22 drives the linkage rod 231 to rotate synchronously through the nozzle 23, so that the linkage rod 231 pushes the abutment plate 233 and compresses the coil spring. When the water pipe 22 rotates close to half a circle, the coil spring pushes the abutment 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, thereby enabling the nozzle 23 to effectively concentrate the spraying of cooling water mist near the middle of the dust suction pipe 1 while rotating to spray cooling water mist, thereby ensuring the combination efficiency of water mist and dust.

[0048] See Figure 2 and Figure 3 Two groups of disturbance plates 221 are arranged at equal intervals along the circumference of the cylindrical surface of the water pipe 22. Each group consists of a number of disturbance plates 221 arranged axially along the water pipe 22 and rotatably connected thereto. The disturbance plate 221 is located between two adjacent nozzles 23.

[0049] See Figure 3 and Figure 5 A switching component for switching the inclined state and the vertical state of the disturbance plate is provided on the water pipe. The switching component includes a swing plate 222. The swing plate 222 is fixedly mounted on the disturbance plate 221. The ends of the swing plates 222 on the same group of disturbance plates 221 are hingedly connected to a synchronous plate 223. Two sliding members 224 are provided on the lower side of the cylindrical surface of the water pipe 22 for axial sliding. The upper end of the sliding member 224 is hinged to the lower end of the corresponding synchronous plate 223 through a push-pull plate 225.

[0050] Continue reading Figure 3 and Figure 5 An arc-shaped guide groove 226 coaxially arranged with the water pipe 22 is provided inside the support plate 211 , and the lower side of the sliding member 224 is slidably connected to the corresponding arc-shaped guide groove 226 through a protruding column.

[0051] It should be noted that the arc guide groove 226 in this embodiment is a closed loop structure, and is composed of two oppositely arranged arc segments and two oppositely arranged spiral segments. The two arc segments are staggered up and down, 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 disturbance plate 221 and the sliding member 224 thereon to rotate synchronously, so that the sliding member 224 drives the raised column thereon to slide along the trajectory of the corresponding arc guide groove 226. When a group of disturbance plates 221 rotates to one side close to the axis of the dust suction pipe 1, the sliding member 224 corresponding to the group of disturbance plates 221 drives the raised column thereon to move to the lower arc section of the arc guide groove 226, so that the sliding member 224 pulls the lowermost swinging plate 222 to deflect through the push-pull plate 225, and the lowermost swinging plate 222 drives the lowermost disturbance plate 221 to rotate to a vertical posture.

[0053] At the same time, the lowest swing plate 222 drives all the swing plates 222 in the same group to rotate synchronously through the synchronization plate 223, so that a group of disturbance plates 221 close to the axis of the dust suction pipe 1 are all rotated to a vertical posture. At the same time, another group of disturbance plates 221 on the same water pipe 22 rotates to the side away from the axis of the dust suction pipe 1, so that the sliding member 224 corresponding to this group drives the raised column thereon to move to the upper arc section of the arc guide groove 226. The principle is the same as above, so that a group of disturbance plates 221 away from the axis of the dust suction pipe 1 is rotated to an inclined posture.

[0054] Then the water pipe 22 drives the two sets of disturbance plates 221 thereon to continue to rotate, so that the disturbance plates 221 in the vertical posture disturb the dust and water mist inside the dust collection pipe 1, thereby accelerating the airflow inside the dust collection pipe 1, and further enhancing the mixing efficiency of water mist and dust, and improving the speed of dust cooling. At the same time, the set of disturbance plates 221 in the inclined posture is a rotor structure. By rotating the disturbance plates 221 in the inclined posture, the airflow away from the axis position of the dust collection pipe 1 can be pushed up, thereby enhancing the suction power and improving the dust removal rate.

[0055] When the water pipe 22 rotates half a circle, the position of the group of disturbance plates 221 originally in an inclined posture is exchanged with the position of the group of disturbance plates 221 in a vertical posture, and the positions of the corresponding sliding members 224 are exchanged at the same time, so that the two sliding members 224 on the same water pipe 22 alternate their height positions up and down along the arc guide groove 226. The principle is the same as above, so that the group of disturbance plates 221 rotated to the side close to the axis of the dust suction pipe 1 is still in a vertical posture, and the group of disturbance plates 221 rotated to the side away from the axis of the dust suction pipe 1 is still in an inclined posture, thereby continuously increasing the mixing efficiency of water mist and dust, and continuously accelerating the upward airflow.

[0056] See Figure 2 、 Figure 6 and Figure 7 A fixing rod 311 extending into the interior of the rotating cylinder 31 is fixedly installed on the tubular structure of the dust suction pipe 1. Two wedge blocks 312 for pushing the push plate 32 upward are fixedly installed on the lower side of the cylindrical surface of the fixing rod 311 at equal intervals along its circumference.

[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 32 located inside the rotating cylinder 31 contacts the inclined surface of the wedge block 312, the continuously rotating push plate 32 moves upward along the inclined surface of the wedge block 312 and compresses the return spring. When the push plate 32 rotates until it is no longer in contact with the wedge 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 curved surface of the push plate 32 and ensure the suction volume.

[0058] See Figure 6 and Figure 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] In the fifth step, the rotating cylinder 31 drives the toggle plate 321 to rotate through the push plate 32. 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 rise of the airflow and improving the suction efficiency.

[0066] In the sixth step, the rotating cylinder 31 drives the push plate 32 to move upward along the inclined surface of the wedge block 312 and compresses the return spring. Then the return spring pushes the push plate 32 to fall quickly, 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.

[0067] In the seventh step, when the push plate 32 moves downward rapidly, the shifting plate 321 overcomes the resistance of the torsion spring under the action of inertia and deflects upward, so that the push plate 32 dynamically shifts the water mist and smoke to further accelerate the mixing.

[0068] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which are still covered by the scope of protection of the present invention.

Claims

1. A dust removal structure for the slag removal process of NdFeB thin-film crucible, comprising a dust suction pipe, the upper portion of which is tubular and the lower portion is conical, 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; The connecting assembly includes a support plate fixedly mounted on the lower side of the conical inner wall of the dust collection pipe; The support plate is provided with an arc-shaped guide groove coaxially arranged with the water pipe, and the lower side of the sliding member is slidably connected to the corresponding arc-shaped guide groove through a raised column; The switching assembly includes a swing plate, a swing plate fixedly mounted on the disturbance plate, and a synchronous plate hinged to the ends of the swing plates on the same set of disturbance plates. Two sliding members are provided on the lower side of the cylindrical surface of the water pipe for sliding along its axial direction, and the upper ends of the sliding members are hinged to the lower ends of the corresponding synchronous plates through the push plate; 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 NdFeB thin film 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 NdFeB thin film crucible according to claim 1, characterized in that: The connecting assembly also includes a supporting 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 supporting bracket.

4. The dust removal structure for the slag removal process of NdFeB thin film 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 removal process of NdFeB thin film 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 NdFeB thin film 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.

7. The dust removal structure for the slag cleaning process of NdFeB thin film 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.

8. The dust removal structure for the slag cleaning process of NdFeB thin film crucible according to claim 1, characterized in that: 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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