Neodymium-iron-boron waste extraction and impurity removal device

Abstract

The invention provides a neodymium iron boron waste extraction and impurity removal device, and relates to the technical field of neodymium iron boron waste treatment.The impurity removal device comprises a treatment barrel, an outer supporting frame and a hybrid mechanism, and the hybrid mechanism comprises a hybrid main shaft, a stirring disc body assembly and a connecting ring body; the stirring disc body assembly comprises a liquid-permeable isolation disc body, an inner barrel adapter, a barrel body connecting seat and a plurality of stirring sealing units, and when the stirring sealing units are in a horizontal state and are in sealing contact with the inner wall of the liquid-permeable part, the barrel body connecting seat can also limit autorotation of the stirring sealing units; when the liquid-permeable isolation disc body is located at the joint of the treatment barrel and the rotary discharging bin, the liquid-permeable isolation disc body and the scraping assembly are in a connected state. The device is simple in structure, the liquid permeating part is opened and closed through the state of the stirring and sealing unit, mixing and isolation of supernate and precipitation liquid are completed, impurities in neodymium iron boron waste can be effectively removed, rare earth elements can be effectively extracted, operation is convenient and fast, and practicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of NdFeB waste treatment, in particular to a NdFeB waste extraction and impurity removal device. Background Art

[0002] NdFeB is an alloy composed of neodymium, iron and boron. It has excellent magnetic properties and is one of the strongest permanent magnet materials known. The process of extracting and removing impurities from NdFeB waste involves multiple steps, including pretreatment of the waste, leaching of rare earth elements, and removal of impurities. The following is a detailed introduction to the methods of extracting and removing impurities from NdFeB waste:

[0003] Waste pretreatment: NdFeB waste usually needs to be crushed or rolled to reduce the particle size and increase the surface area in contact with the solvent, thereby improving the subsequent extraction efficiency.

[0004] Leaching of rare earth elements: Through the oxidation roasting-hydrochloric acid decomposition method, the rare earth elements in the NdFeB waste are converted into soluble chlorides for subsequent extraction. Roasting at 700°C for 1.5 hours can maximize the oxidation rate of iron, and then leaching is carried out using 4 mol / L hydrochloric acid with a liquid-solid ratio of 5:1. The reaction is carried out at 90°C for 1.5 hours, and the rare earth leaching rate can reach 99.33.

[0005] Impurity removal: During the leaching process, non-rare earth impurities are removed by adjusting the pH value and aging time. For example, adjusting the pH value to 3.5 and aging time greater than 2 hours can effectively reduce the content of non-rare earth impurities in the slurry, especially the iron content can be reduced to 0.0014g / L.

[0006] Separation and purification: The rare earth elements are separated from the leaching solution by precipitation method. For example, using oxalic acid as a precipitant, at a feed solution concentration of 0.3 mol / L, an oxalic acid concentration of 0.6 mol / L, a precipitation temperature of 60°C and a stirring rate of 500 r / min, rare earth oxide powders with a volume center particle size D50 of 14.36 μm can be prepared.

[0007] At present, the NdFeB waste extraction and impurity removal device places a flocculant in the waste liquid and stirs it. The impurities in the waste liquid sink after contacting the flocculant and form a sedimentation liquid, and then form a sedimentation liquid and a supernatant. When the two are separated, it is necessary to first absorb the supernatant through the drainage pipe. After the supernatant is completely discharged, the sedimentation liquid is discharged through the drainage channel at the bottom. When the drainage pipe absorbs the supernatant near the stratification point of the precipitate and the supernatant, if there is no isolation, it is easy to cause the sedimentation liquid to be agitated, thereby sucking away the sedimentation liquid. If an isolation structure is set, the stratification position of the precipitate and the supernatant cannot be fixed, thereby effectively affecting the separation of the supernatant and the precipitate. Summary of the invention

[0008] The purpose of the present invention is to provide a device for extracting and removing impurities from NdFeB waste materials to solve the technical problems existing in the prior art.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A device for extracting and removing impurities from NdFeB waste includes a processing cylinder, an outer support frame and a hybrid mechanism. The top of the processing cylinder is provided with an upper cover and the bottom is provided with a rotary discharge bin. The outer wall of the processing cylinder is fixed to the outer support frame through a fixed ring frame. The upper cover is provided with at least two liquid inlet ends connected to the inside of the processing cylinder and the bottom of the rotary discharge bin is provided with a liquid discharge port. The hybrid mechanism includes a hybrid spindle, a stirring disc assembly and a connecting ring. The hybrid spindle is arranged at the center of the processing cylinder and the top of the hybrid spindle is connected to the stirring disc assembly on the outer wall of the upper cover. The output end of the motor is fixedly connected, the connecting ring body is arranged on the inner wall of the treatment cylinder in a vertical sliding manner, and the stirring disc assembly is rotatably arranged inside the connecting ring body, the stirring disc assembly includes a liquid-permeable isolation disc body, an inner cylinder adapter, a cylinder connecting seat and a plurality of stirring sealing units, the outer edge of the liquid-permeable isolation disc body is rotatably matched with the inner wall of the connecting ring body, and the liquid-permeable isolation disc body is provided with a plurality of circumferentially distributed liquid-permeable parts, and a plurality of stirring sealing units are correspondingly rotatably arranged inside the liquid-permeable part, and the stirring sealing unit can be sealed with the inner wall of the liquid-permeable part The inner cylinder adapter and the cylinder connecting seat are arranged in the middle of the liquid-permeable isolation disc, and the cylinder connecting seat is fixedly connected to the liquid-permeable isolation disc, and the cylinder connecting seat has a plurality of transmission cavities corresponding to the plurality of stirring sealing units respectively, and one end of the stirring sealing unit extends into the transmission cavity, and the inner cylinder adapter is rotatably arranged inside the cylinder connecting seat and the inner cylinder adapter is connected to the end portions of the plurality of stirring sealing units extending to the transmission cavity, and when the inner cylinder adapter rotates relative to the cylinder connecting seat, the inner cylinder adapter drives the stirring sealing unit to automatically When the stirring sealing unit is in a horizontal state and in sealing contact with the inner wall of the liquid-permeable part, the cylinder connecting seat can also limit the self-rotation of the stirring sealing unit; the hybrid main shaft slides through the inner cylinder adapter; a lifting component is provided on the outer wall of the processing cylinder, one end of the lifting component extends to the interior of the processing cylinder and is connected to the connecting ring body; a scraper assembly that rotates and adheres to the inner wall of the rotary discharge bin is provided inside the rotary discharge bin; when the liquid-permeable isolation disc is at the connection between the processing cylinder and the rotary discharge bin, the liquid-permeable isolation disc and the scraper assembly are in a connected state.

[0011] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0012] In an optional scheme: the liquid permeable part is composed of a plurality of arc-shaped openings radially distributed on the surface of the liquid permeable isolation disk body, the stirring sealing unit includes a switching shaft part and a plurality of arc-shaped stirring sealing strips, the switching shaft part is rotatably arranged on the liquid permeable isolation disk body, one end of the switching shaft part extends to the inside of the transmission cavity and is connected to the part of the cylinder connecting seat in the transmission cavity, the switching shaft part passes through the inner center of the plurality of corresponding arc-shaped openings, the arc-shaped stirring sealing strips are respectively embedded in the arc-shaped openings and the arc-shaped stirring sealing strips are fixedly connected to the switching shaft part.

[0013] In an optional scheme: the end of the switching shaft portion extending into the transmission cavity is provided with a switching gear portion, the inner cylinder adapter includes a sleeve portion and a plurality of arc-shaped racks arranged on the outer wall of the sleeve portion, the sleeve portion is rotatably arranged inside the cylinder connecting seat and the plurality of arc-shaped racks are circumferentially fixed on the outer wall of the sleeve portion, the hybrid main shaft slides through the center of the sleeve portion, the arc-shaped rack is inside the transmission cavity and the arc-shaped rack is meshed with the switching gear portion; a braking unit is also provided on the outer wall of the sleeve portion, the braking unit corresponds to the end of the switching shaft portion and the braking unit can limit the self-rotation of the switching shaft portion when the arc-shaped stirring sealing strip is in a horizontal state.

[0014] In an optional solution: the braking unit includes a limiting through hole opened on the inner wall of the sleeve body and an inserted rod member slidably arranged inside the switching shaft part, the outer end of the inserted rod member is provided with a magnetic plate member and the magnetic plate member is connected to the end of the switching shaft part through a reset spring, and an electromagnetic block is arranged inside the limiting through hole.

[0015] In an optional solution, the limiting through hole is located on the center line of the arc-shaped rack, and when the center line of the arc-shaped rack and the switching shaft portion are on the same plane, the arc-shaped stirring sealing strip is in a horizontal state.

[0016] In an optional solution: a plurality of guide ridges are distributed circumferentially on the inner wall of the treatment cylinder, a plurality of guide notches which are slidably matched with the plurality of guide ridges are opened on the outer wall of the connecting ring body, a scraping ring is also provided on the outer wall of the connecting ring body, and the upper surface of the connecting ring body is a downwardly concave curved surface.

[0017] In an optional solution: the lifting component includes an inner rod and a telescopic drive unit, the telescopic drive unit is fixed on a fixed ring frame, the inner rod slides through the upper cover, the lower end of the inner rod extends into the interior of the processing cylinder and is connected to the upper surface of the connecting ring body, and the top of the inner rod is connected to the top of the telescopic drive unit.

[0018] In an optional solution: the guide ridge is a hollow structure with a heating strip inside, and the surface of the inner rod is provided with a temperature sensor.

[0019] In an optional scheme: a plurality of lower connecting columns are arranged at the edge of the lower surface of the liquid-permeable isolation disk body, the scraper assembly includes a connecting ring and a plurality of arc-shaped scraper strips, the plurality of arc-shaped scraper strips are attached to the inner wall of the rotary discharge bin in a circumferentially distributed manner, the connecting ring is rotatably arranged at the connection between the rotary discharge bin and the processing cylinder body, and the ends of the plurality of arc-shaped scraper strips are fixedly connected to the connecting ring, the inner side wall of the connecting ring has a plurality of circumferentially distributed protrusions, and when the stirring disk body assembly is at the connection between the rotary discharge bin and the processing cylinder body, the lower connecting column can be correspondingly inserted between two adjacent protrusions.

[0020] In an optional solution: a control panel is also provided on the outside of the processing cylinder and the outer frame of the control panel is fixed to the fixed ring frame through a support arm; the temperature sensor, the heating strip and the stirring motor are all electrically connected to the control panel.

[0021] By adopting the above technical solution, the present invention has the following beneficial effects:

[0022] In the NdFeB waste extraction and impurity removal device provided by the present invention, the stirring disc assembly can realize opening and closing of the liquid permeable part by switching the state of the stirring sealing unit before rotating; the stirring sealing unit can be rotated in a vertical state to effectively stir the feed liquid and make the flocculant and impurities fully mixed and contacted; the stirring sealing unit is used in a horizontal state to seal the liquid permeable part, so as to realize the isolation of the precipitate and the supernatant; it is ensured that when the precipitate is discharged, the supernatant will not be affected, so as to realize the complete separation of the precipitate and the supernatant, and improve the impurity removal effect; at the same time, the stirring When the moving disc assembly can move down to the connection between the rotary discharge bin and the processing cylinder, the liquid-permeable isolation disc is connected to the scraper assembly; the rotation of the stirring disc assembly drives the scraper assembly to rotate, so that the scraper assembly can scrape off impurities attached to the inner wall of the rotary discharge bin, and can effectively clean up the impurities. The present invention has a simple structure, and utilizes the state of the stirring sealing unit to open and close the liquid-permeable part, and completes mixing and isolation of the supernatant and the precipitate, which can effectively remove impurities in NdFeB waste and extract rare earth elements, and is easy to operate and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The figure is a schematic diagram of the overall structure of the extraction and impurity removal device in one embodiment of the present invention.

[0025] Figure 2It is a schematic diagram of the internal structure of the processing cylinder in one embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of a stirring disk assembly in one embodiment of the present invention.

[0027] Figure 4 Schematic diagram of the structure of a liquid-permeable isolation disk in one embodiment of the present invention.

[0028] Figure 5 It is a schematic diagram of the structure of the stirring sealing unit in one embodiment of the present invention.

[0029] Figure 6 for Figure 5 Enlarged structural diagram at A in the middle.

[0030] Figure 7 for Figure 4 Enlarged structural diagram at B in the middle.

[0031] Figure 8 It is a schematic diagram of the structure of a rotary discharge bin in one embodiment of the present invention.

[0032] Notes on reference numerals: treatment cylinder 100, upper cover 110, rotary discharge bin 120, liquid discharge port 130, guide ridge 140, arc-shaped scraper strip 150, connecting ring 160, protrusion 170, outer support frame 200, fixed ring frame 210, liquid inlet end 300, hybrid mechanism 400, lifting component 500, inner rod 510, telescopic drive unit 520, control panel 600, support arm 610, hybrid main shaft 700, stirring motor 710, stirring The disc assembly 800, the liquid-permeable isolation disc 810, the inner cylinder adapter 820, the sleeve portion 821, the arc-shaped rack 822, the cylinder connecting seat 830, the liquid-permeable portion 840, the arc-shaped mouth 841, the stirring seal unit 850, the switching shaft portion 851, the arc-shaped stirring seal strip 852, the switching gear portion 853, the plug-in rod 854, the magnetic plate 855, the reset spring 856, the lower connecting column 860, the transmission cavity 870, the connecting ring body 900, and the guide notch 910. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The left, right, up, and down positions of the components shown in the drawings are only one arrangement, and the specific positions are set according to specific needs.

[0035] In one embodiment, Figure 1-Figure 8 As shown, a NdFeB waste extraction and impurity removal device includes a processing cylinder 100, an outer support frame 200 and a hybrid mechanism 400. The top of the processing cylinder 100 is provided with an upper cover 110 and the bottom is provided with a rotary discharge bin 120. The outer wall of the processing cylinder 100 is fixed to the outer support frame 200 through a fixed ring frame 210. The upper cover 110 has at least two liquid inlet ends 300 connected to the interior of the processing cylinder 100 and the bottom of the rotary discharge bin 120 has a liquid discharge port 130. The hybrid mechanism 400 includes a hybrid spindle 700, an agitating disc assembly 800 and a connecting ring body 900. The hybrid spindle 700 is arranged at the center of the processing cylinder 100 and the top of the hybrid spindle 700 is connected to the device 100. The output end of the stirring motor 710 on the outer wall of the upper cover 110 is fixedly connected, the connecting ring body 900 is arranged on the inner wall of the processing cylinder 100 in a vertical sliding manner, and the stirring disc assembly 800 is rotatably arranged on the inner side of the connecting ring body 900, the stirring disc assembly 800 includes a liquid-permeable isolation disc body 810, an inner cylinder adapter 820, a cylinder connecting seat 830 and a plurality of stirring sealing units 850, the outer edge of the liquid-permeable isolation disc body 810 is rotatably matched with the inner wall of the connecting ring body 900, and the liquid-permeable isolation disc body 810 is provided with a plurality of circumferentially distributed liquid-permeable portions 840, and a plurality of stirring sealing units 850 are correspondingly rotatably arranged on the inner side of the liquid-permeable portion 840, and the stirring sealing units 850 can be connected with the liquid-permeable portion 840. 840 inner wall sealing contact; the inner cylinder adapter 820 and the cylinder connecting seat 830 are arranged in the middle position of the permeable isolation disc 810 and the cylinder connecting seat 830 is fixedly connected to the permeable isolation disc 810, the cylinder connecting seat 830 has a plurality of transmission cavities 870 corresponding to the plurality of stirring sealing units 850 respectively, one end of the stirring sealing unit 850 extends into the transmission cavity 870, the inner cylinder adapter 820 is rotatably arranged in the cylinder connecting seat 830 and the inner cylinder adapter 820 is connected to the end of the plurality of stirring sealing units 850 extending to the transmission cavity 870, when the inner cylinder adapter 820 rotates relative to the cylinder connecting seat 830, the inner cylinder adapter 820 drives the stirring The dynamic sealing unit 850 rotates, and when the stirring sealing unit 850 is in a horizontal state and in sealing contact with the inner wall of the liquid-permeable part 840, the cylinder connecting seat 830 can also limit the rotation of the stirring sealing unit 850; the hybrid main shaft 700 slides through the inner cylinder adapter 820; a lifting component 500 is provided on the outer wall of the processing cylinder 100, and one end of the lifting component 500 extends to the interior of the processing cylinder 100 and is connected to the connecting ring body 900; a scraper assembly that rotates against the inner wall of the rotary discharge bin 120 is provided inside the rotary discharge bin 120; when the liquid-permeable isolation disc 810 is at the connection between the processing cylinder 100 and the rotary discharge bin 120, the liquid-permeable isolation disc 810 and the scraper assembly are in a connected state.

[0036] In the embodiment of the present invention, NdFeB waste and precipitant and other liquids enter the processing cylinder 100 through the liquid inlet end 300, the stirring motor 710 works and the stirring motor 710 drives the hybrid main shaft 700 to rotate. Since the inner cylinder adapter 820 rotates relative to the cylinder connecting seat 830, the hybrid main shaft 700 first drives the inner cylinder adapter 820 to rotate relative to the cylinder connecting seat 830. Therefore, the inner cylinder adapter 820 extends to the part inside the transmission cavity 870 and can act on the end of the stirring sealing unit 850 in the transmission cavity 870, so that the stirring sealing unit 850 rotates and the stirring sealing unit 850 rotates from a horizontal state to a vertical state. At this time, the liquid-permeable portion 840 is in an open state, and the flocculant combines with the impurities of the NdFeB waste to form a precipitate; when the stirring seal 850 is When the sealing unit 850 is in a vertical state, the end of the inner cylinder adapter 820 in the transmission chamber 870 contacts the inner wall of the transmission chamber 870, and the inner cylinder adapter 820 continues to rotate and drives the cylinder connecting seat 830, the liquid-permeable isolation disc 810 and the stirring sealing unit 850 to rotate inside the processing cylinder 100. The stirring sealing unit 850 in the vertical state can stir the liquid inside the processing cylinder 100. At the same time, the lifting component 500 works and drives the connecting ring body 900 to move vertically, and the connecting ring body 900 drives the stirring disc assembly 800 to move vertically inside the processing cylinder 100, so that the flocculant is fully in contact with the impurities of the NdFeB waste; after mixing is completed, the lifting component 500 drives the stirring disc assembly 800 to move to the sedimentation liquid and the upper The stirring motor 710 works and drives the hybrid main shaft 700 to rotate a certain angle. At this time, since the inner cylinder adapter 820 rotates relative to the cylinder connecting seat 830, the hybrid main shaft 700 first drives the inner cylinder adapter 820 to rotate relative to the cylinder connecting seat 830, and the stirring sealing unit 850 rotates to the incompletely closed liquid permeable portion 840. After standing for a period of time, after the precipitated liquid and the supernatant are completely separated at the stirring disc assembly 800, the stirring sealing unit 850 rotates to a horizontal state and completely closes the liquid permeable portion 840, thereby isolating the precipitated liquid and the supernatant; the lifting component 500 continues to work and drives the connecting ring body 900 and the stirring disc assembly 800 to move downward, opens the fixed ring frame 210, and presses the precipitated liquid downward. The liquid is squeezed out of the fixed ring frame 210, and the precipitated liquid can be fully discharged; when the stirring disc assembly 800 moves to the connection between the rotary discharge bin 120 and the processing cylinder 100, the liquid-permeable isolation disc 810 is connected to the scraper assembly, the cylinder connecting seat 830 works and limits the rotation of the stirring sealing unit 850, and the hybrid mechanism 400 continues to work. At this time, the stirring sealing unit 850 always maintains a horizontal state, the liquid-permeable isolation disc 810 rotates and drives the scraper assembly to rotate, and the scraper assembly can scrape off the precipitated impurities adhered to the inner wall of the rotary discharge bin 120 and discharge them with the precipitated liquid, so that the NdFeB waste extraction and impurity removal effect is obvious; wherein, the supernatant can be opened after the precipitated liquid is discharged, and the supernatant is discharged from the fixed ring frame 210.

[0037] In one embodiment, Figure 1-Figure 7 As shown, the liquid permeable portion 840 is composed of a plurality of arc-shaped openings 841 radially distributed on the surface of the liquid permeable isolation disc 810, and the stirring sealing unit 850 includes a switching shaft portion 851 and a plurality of arc-shaped stirring sealing strips 852. The switching shaft portion 851 is rotatably arranged on the liquid permeable isolation disc 810, and one end of the switching shaft portion 851 extends to the inside of the transmission cavity 870 and is connected to the part of the cylinder connecting seat 830 in the transmission cavity 870. The switching shaft portion 851 passes through the inner centers of the plurality of corresponding arc-shaped openings 841, and the arc-shaped stirring sealing strips 852 are respectively correspondingly embedded in the arc-shaped openings 841 and the arc-shaped stirring sealing strips 852 are connected to the switching shaft portion 851. 1 fixed connection; in the embodiment of the present invention, when the inner cylinder adapter 820 rotates relative to the cylinder connection seat 830, the cylinder connection seat 830 can act on the switching shaft portion 851 and make it rotate, and the arc-shaped opening 841 rotates and drives the arc-shaped stirring sealing strip 852 to rotate, so that the arc-shaped stirring sealing strip 852 can rotate to a vertical state; when the inner cylinder adapter 820 no longer rotates relative to the cylinder connection seat 830, the hybrid main shaft 700 can drive the liquid-permeable isolation disc 810 and the plurality of stirring sealing units 850 to rotate through the inner cylinder adapter 820 and the cylinder connection seat 830, so that the arc-shaped stirring sealing strip 852 can stir the liquid inside the processing cylinder 100.

[0038] In one embodiment, Figure 1-Figure 7As shown, the end of the switching shaft portion 851 extending into the transmission chamber 870 is provided with a switching gear portion 853, the inner cylinder adapter 820 includes a sleeve portion 821 and a plurality of arc-shaped racks 822 arranged on the outer wall of the sleeve portion 821, the sleeve portion 821 is rotatably arranged inside the cylinder connecting seat 830 and the plurality of arc-shaped racks 822 are circumferentially fixed on the outer wall of the sleeve portion 821, the hybrid main shaft 700 slides through the center of the sleeve portion 821, the arc-shaped rack 822 is inside the transmission chamber 870 and the arc-shaped rack 822 is meshed with the switching gear portion 853; a braking unit is also provided on the outer wall of the sleeve portion 821, the braking unit corresponds to the end of the switching shaft portion 851 and the braking unit can limit the self-rotation of the switching shaft portion 851 when the arc-shaped stirring sealing strip 852 is in a horizontal state; in this embodiment of the present invention, the braking unit does not limit the switching shaft portion 85 In the state of self-rotation, the hybrid main shaft 700 drives the sleeve body 821 to rotate, and the sleeve body 821 first rotates relative to the cylinder connecting seat 830, and the arc-shaped rack 822 rotates with the rotation of the sleeve body 821. The arc-shaped rack 822 rotates the switching shaft part 851 by meshing with the switching gear part 853, so that the arc-shaped stirring sealing strip 852 rotates from the horizontal state to the state. When the end of the arc-shaped rack 822 conflicts with the inner wall of the transmission cavity 870, the arc-shaped stirring sealing strip 852 is just in the vertical state, and the arc-shaped rack 822 continues to rotate and rotates the entire stirring disc assembly 800 by pushing the cylinder connecting seat 830; when the arc-shaped stirring sealing strip 852 is in the horizontal state, the braking unit can limit the rotation of the switching shaft part 851, so that the arc-shaped stirring sealing strip 852 is completely inside the corresponding arc-shaped opening 841, effectively separating the supernatant and the sediment.

[0039] In one embodiment, Figure 1-Figure 7 As shown, the brake unit includes a limiting through hole 823 opened on the inner wall of the sleeve body 821 and an insert rod 854 slidably arranged inside the switching shaft part 851, and the outer end of the insert rod 854 is provided with a magnetic plate 855, and the magnetic plate 855 is connected to the end of the switching shaft part 851 through a reset spring 856, and an electromagnetic block is arranged inside the limiting through hole 823; in the embodiment of the present invention, when the electromagnetic block is energized, the electromagnetic block has magnetism and generates magnetic attraction with the magnetic plate 855, so that the magnetic plate 855 moves toward the electromagnetic block and is placed inside the limiting through hole 823, so that the sleeve portion 821 rotates and drives the liquid-permeable isolation disc 810 to rotate through the switching shaft portion 851, and the limiting through hole 823 limits the rotation of the switching shaft portion 851; when the electromagnetic block is not energized, under the elastic force of the reset spring 856, the magnetic plate 855 moves out of the limiting through hole 823, so that the limiting through hole 823 no longer limits the rotation of the sleeve portion 821; wherein, the electromagnetic block is not drawn in the accompanying drawings and belongs to the prior art, so it is not described here.

[0040] In one embodiment, Figure 1-Figure 7 As shown, the limiting through hole 823 is located on the center line of the arc-shaped rack 822. When the center line of the arc-shaped rack 822 and the switching shaft portion 851 are on the same plane, the arc-shaped stirring sealing strip 852 is in a horizontal state. In the embodiment of the present invention, when the arc-shaped stirring sealing strip 852 is in a horizontal state, the magnetic plate 855 and the limiting through hole 823 are just in a relative state and the axis of the switching shaft portion 851 is on the same plane as the center line of the arc-shaped rack 822. Therefore, the stirring motor 710 drives the hybrid main shaft 700 to rotate forward and reverse alternately. When the hybrid main shaft 700 switches the rotation direction, the liquid-permeable isolation disc 810 stops rotating. At this time, the switching shaft portion 851 can switch the rotation direction and make the arc-shaped stirring sealing strip 852 rotate, so as to vertically stir the liquid inside the treatment cylinder 100 and fully mix the flocculant and impurities.

[0041] In one embodiment, Figure 1-Figure 3 As shown, a plurality of guide ridges 140 are circumferentially distributed on the inner wall of the processing cylinder 100, a plurality of guide notches 910 are opened on the outer wall of the connecting ring body 900, which are respectively slidably matched with the plurality of guide ridges 140, and a scraper ring is also provided on the outer wall of the connecting ring body 900, and the upper surface of the connecting ring body 900 is a downwardly concave curved surface; in the embodiment of the present invention, when the connecting ring body 900 moves vertically, the scraper ring can scrape off impurities adhered to the inner wall of the processing cylinder 100, and the impurities located on the upper side of the connecting ring body 900 are guided to the liquid-permeable portion 840 through the upper surface of the connecting ring body 900, thereby effectively cleaning the impurities adhered to the inner wall of the processing cylinder 100.

[0042] In one embodiment, Figure 1-Figure 3 As shown, the lifting component 500 includes an inner rod 510 and a telescopic driving part 520, the telescopic driving part 520 is fixed on the fixed ring frame 210, the inner rod 510 slides through the upper cover 110, the lower end of the inner rod 510 extends to the inside of the processing cylinder 100 and is connected to the upper surface of the connecting ring body 900, and the top of the inner rod 510 is connected to the top of the telescopic driving part 520; in this embodiment of the present invention, the telescopic driving part 520 can be a cylinder or an electric cylinder; the telescopic driving part 520 drives the inner rod 510 to move vertically relative to the upper cover 110 by telescopically driving the inner rod 510, and the inner rod 510 drives the connecting ring body 900 to move along the inner wall of the processing cylinder 100, thereby causing the stirring disk assembly 800 to move vertically and stir the liquid inside the processing cylinder 100.

[0043] In one embodiment, Figure 1-Figure 3As shown, the guide rib 140 is a hollow structure with a heating strip inside, and the surface of the inner rod 510 has a temperature sensor; in the embodiment of the present invention, the heating strip can be powered and generate heat, and the heat is dissipated into the liquid through the surface of the guide rib 140, thereby heating the liquid and improving the combination of flocculant and impurities.

[0044] In one embodiment, Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, a plurality of lower connecting posts 860 are arranged at the edge of the lower surface of the permeable isolation disc 810, and the scraper assembly includes a connecting ring 160 and a plurality of arc-shaped scraper strips 150, and the plurality of arc-shaped scraper strips 150 are attached to the inner wall of the rotary discharge bin 120 in a circumferentially distributed manner, and the connecting ring 160 is rotatably arranged at the connection between the rotary discharge bin 120 and the processing cylinder 100, and the ends of the plurality of arc-shaped scraper strips 150 are fixedly connected to the connecting ring 160, and the inner side wall of the connecting ring 160 has a plurality of circumferentially distributed protrusions 170. When the stirring disc assembly 800 is in the rotary discharge bin, 120 and the processing cylinder 100, the lower connecting column 860 can be correspondingly inserted between two adjacent protrusions 170; in this embodiment of the present invention, when the stirring disk assembly 800 moves down to the connection between the rotary discharge bin 120 and the processing cylinder 100, the lower connecting column 860 is correspondingly inserted between two adjacent protrusions 170; at this time, the stirring disk assembly 800 rotates and can drive the connecting ring 160 and the arc-shaped scraper strip 150 to rotate through the protrusion 170, so that the arc-shaped scraper strip 150 can scrape off impurities on the inner wall of the rotary discharge bin 120 to ensure that the impurities are completely removed.

[0045] In one embodiment, Figure 1 and Figure 2 As shown, a control panel 600 is also provided on the outside of the processing cylinder 100, and the outer frame of the control panel 600 is fixed to the fixed ring frame 210 through a support arm rod 610; the temperature sensor, the heating strip are electrically connected, and the stirring motor 710 are electrically connected to the control panel 600; in the embodiment of the present invention, the operator can control the working status of the stirring motor 710 and the heating strip through the control panel 600, and the temperature sensor transmits the temperature data in the slurry to the inside of the control panel 600, so that the staff can understand the processing status of the slurry inside the processing cylinder 100.

[0046] The above embodiment provides a NdFeB waste extraction and impurity removal device, wherein the stirring motor 710 is working and the stirring motor 710 drives the hybrid main shaft 700 to rotate. Since the inner cylinder adapter 820 rotates relative to the cylinder connecting seat 830, the hybrid main shaft 700 first drives the inner cylinder adapter 820 to rotate relative to the cylinder connecting seat 830. Therefore, the inner cylinder adapter 820 extends to the transmission chamber 870. The part can act on the end of the stirring sealing unit 850 in the transmission chamber 870, so that the stirring sealing unit 850 rotates and the stirring sealing unit 850 rotates from a horizontal state to a vertical state. At this time, the liquid-permeable portion 840 is in an open state, and the flocculant combines with the impurities of the NdFeB waste to form a precipitate; when the stirring seal When the unit 850 is in a vertical state, the end of the inner cylinder adapter 820 in the transmission chamber 870 contacts the inner wall of the transmission chamber 870, and the inner cylinder adapter 820 continues to rotate and drives the cylinder connecting seat 830, the liquid-permeable isolation disc 810 and the stirring sealing unit 850 to rotate inside the processing cylinder 100. The stirring sealing unit 850 in the vertical state can stir the liquid inside the processing cylinder 100. At the same time, the lifting component 500 works and drives the connecting ring 900 to move vertically, and the connecting ring 900 drives the stirring disc assembly 800 to move vertically inside the processing cylinder 100, so that the flocculant is fully in contact with the impurities of the NdFeB waste; after the mixing is completed, the lifting component 500 drives the stirring disc assembly 800 to move vertically. The stirring disc assembly 800 is moved to between the sedimentation liquid and the supernatant liquid; and the stirring motor 710 works and drives the hybrid main shaft 700 to rotate a certain angle. At this time, since the inner cylinder adapter 820 rotates relative to the cylinder connecting seat 830, the hybrid main shaft 700 first drives the inner cylinder adapter 820 to rotate relative to the cylinder connecting seat 830, and the stirring sealing unit 850 rotates to the incompletely closed liquid permeable portion 840. After standing for a period of time, after the sedimentation liquid and the supernatant liquid are completely separated at the stirring disc assembly 800, the stirring sealing unit 850 rotates to a horizontal state and completely closes the liquid permeable portion 840, thereby realizing the isolation of the sedimentation liquid and the supernatant liquid; the lifting component 500 continues to work and drives the connecting ring body 900 and the stirring disc assembly 800 to move downward The fixed ring frame 210 is opened, and the stirring disc assembly 800 presses down the precipitate and squeezes out the precipitate from the fixed ring frame 210, so that the precipitate can be fully discharged; when the stirring disc assembly 800 moves to the connection between the rotary discharge bin 120 and the processing cylinder 100, the permeable isolation disc 810 is connected to the scraper assembly, and the cylinder connecting seat 830 works and limits the rotation of the stirring sealing unit 850, and the hybrid mechanism 400 continues to work. At this time, the stirring sealing unit 850 always maintains a horizontal state, the permeable isolation disc 810 rotates and drives the scraper assembly to rotate, and the scraper assembly can scrape off the precipitated impurities adhered to the inner wall of the rotary discharge bin 120 and discharge them with the precipitate, so that the NdFeB waste extraction and impurity removal effect is obvious.

[0047] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

Claims

1. A NdFeB waste extraction and impurity removal device, comprising a processing cylinder (100), an outer support frame (200) and a hybrid mechanism (400), wherein the processing cylinder (100) has an upper cover (110) on the top and a rotary discharge bin (120) on the bottom, and the outer wall of the processing cylinder (100) is fixed to the outer support frame (200) via a fixed ring frame (210), characterized in that: The upper cover (110) is provided with at least two liquid inlet ends (300) communicating with the interior of the processing cylinder (100), and the bottom of the rotary discharge bin (120) is provided with a liquid discharge port (130); The hybrid mechanism (400) comprises a hybrid main shaft (700), a stirring disc assembly (800) and a connecting ring body (900); The hybrid main shaft (700) is arranged at the center of the processing cylinder (100), and the top of the hybrid main shaft (700) is fixedly connected to the output end of the stirring motor (710) arranged on the outer wall of the upper cover (110); the connecting ring body (900) is arranged on the inner wall of the processing cylinder (100) in a vertically sliding manner, and the stirring disc assembly (800) is rotatably arranged on the inner side of the connecting ring body (900); The stirring disc assembly (800) comprises a liquid-permeable isolation disc (810), an inner cylinder adapter (820), a cylinder connecting seat (830), and a plurality of stirring sealing units (850); The outer edge of the liquid-permeable isolation disc (810) is rotatably matched with the inner wall of the connecting ring body (900), and the liquid-permeable isolation disc (810) is provided with a plurality of circumferentially distributed liquid-permeable portions (840), and a plurality of stirring sealing units (850) are correspondingly rotatably arranged inside the liquid-permeable portions (840), and the stirring sealing units (850) can be in sealing contact with the inner wall of the liquid-permeable portion (840); The inner cylinder adapter (820) and the cylinder connecting seat (830) are arranged in the middle of the liquid permeable isolation disc (810), and the cylinder connecting seat (830) is fixedly connected to the liquid permeable isolation disc (810), and the cylinder connecting seat (830) has a plurality of transmission cavities (870) corresponding to the plurality of stirring sealing units (850) respectively inside. One end of the stirring sealing unit (850) extends into the transmission chamber (870); the inner cylinder adapter (820) is rotatably disposed inside the cylinder connecting seat (830); the inner cylinder adapter (820) is connected to the ends of the plurality of stirring sealing units (850) extending into the transmission chamber (870); when the inner cylinder adapter (820) rotates relative to the cylinder connecting seat (830), the inner cylinder adapter (820) drives the stirring sealing unit (850) to rotate; When the stirring sealing unit (850) is in a horizontal state and in sealing contact with the inner wall of the liquid permeable portion (840), the cylinder connecting seat (830) can also limit the self-rotation of the stirring sealing unit (850); the hybrid main shaft (700) slides through the inner cylinder adapter (820); A lifting component (500) is provided on the outer wall of the processing cylinder (100), and one end of the lifting component (500) extends into the interior of the processing cylinder (100) and is connected to the connecting ring body (900); The rotary discharge bin (120) is provided with a scraper assembly that rotates against the inner wall thereof; When the liquid-permeable isolation disc (810) is located at the connection between the processing cylinder (100) and the rotary discharge bin (120), the liquid-permeable isolation disc (810) and the scraper assembly are in a connected state.

2. The NdFeB waste extraction and impurity removal device according to claim 1 is characterized in that: The liquid permeable portion (840) is composed of a plurality of arc-shaped openings (841) radially distributed on the surface of the liquid permeable isolation disc (810); the stirring sealing unit (850) comprises a switching shaft portion (851) and a plurality of arc-shaped stirring sealing strips (852); The switching shaft portion (851) is rotatably mounted on the liquid-permeable isolation disc (810), one end of the switching shaft portion (851) extends into the transmission cavity (870) and is connected to a portion of the cylinder connecting seat (830) located in the transmission cavity (870), and the switching shaft portion (851) passes through the inner centers of a plurality of corresponding arc-shaped openings (841); The arc-shaped stirring sealing strips (852) are respectively correspondingly embedded in the arc-shaped openings (841), and the arc-shaped stirring sealing strips (852) are fixedly connected to the switching shaft portion (851).

3. The NdFeB waste extraction and impurity removal device according to claim 2 is characterized in that: The end of the switching shaft portion (851) extending into the transmission cavity (870) is provided with a switching gear portion (853); The inner cylinder adapter (820) comprises a sleeve portion (821) and a plurality of arc-shaped racks (822) arranged on the outer wall of the sleeve portion (821); The sleeve portion (821) is rotatably disposed inside the cylinder connection seat (830) and a plurality of arc-shaped racks (822) are circumferentially fixed on the outer wall of the sleeve portion (821); the hybrid main shaft (700) slides through the center of the sleeve portion (821); the arc-shaped racks (822) are located inside the transmission cavity (870) and mesh with the switching gear portion (853); A braking unit is also provided on the outer wall of the sleeve portion (821), the braking unit corresponding to the end of the switching shaft portion (851) and capable of limiting the self-rotation of the switching shaft portion (851) when the arc-shaped stirring sealing strip (852) is in a horizontal state.

4. The NdFeB waste extraction and impurity removal device according to claim 3 is characterized in that: The brake unit comprises a limiting through hole (823) formed on the inner wall of the sleeve portion (821) and an inserting rod (854) slidably disposed inside the switching shaft portion (851); The outer end of the plug rod (854) is provided with a magnetic plate (855), and the magnetic plate (855) is connected to the end of the switching shaft portion (851) via a return spring (856), and an electromagnetic block is provided inside the limiting through hole (823).

5. The NdFeB waste extraction and impurity removal device according to claim 4 is characterized in that: The limiting through hole (823) is located at the midline of the arc-shaped rack (822). When the midline of the arc-shaped rack (822) and the switching shaft portion (851) are in the same plane, the arc-shaped stirring sealing strip (852) is in a horizontal state.

6. The NdFeB waste extraction and impurity removal device according to claim 1, characterized in that: A plurality of guide ridges (140) are circumferentially distributed on the inner wall of the treatment cylinder (100), a plurality of guide notches (910) are provided on the outer wall of the connecting ring body (900) for respectively slidingly cooperating with the plurality of guide ridges (140), a scraper ring is also provided on the outer wall of the connecting ring body (900), and the upper surface of the connecting ring body (900) is a downwardly concave curved surface.

7. The NdFeB waste extraction and impurity removal device according to claim 6, characterized in that: The lifting component (500) comprises an inner rod (510) and a telescopic driving part (520); The telescopic drive unit (520) is fixed on the fixed ring frame (210), the inner rod (510) slides through the upper cover (110), the lower end of the inner rod (510) extends into the interior of the processing cylinder (100) and is connected to the upper surface of the connecting ring body (900), and the top of the inner rod (510) is connected to the top of the telescopic drive unit (520).

8. The NdFeB waste extraction and impurity removal device according to claim 7, characterized in that: The guide ridge (140) is a hollow structure and has a heating strip inside, and the surface of the inner rod (510) has a temperature sensor.

9. The NdFeB waste extraction and impurity removal device according to claim 8, characterized in that: A plurality of lower connection columns (860) are provided at the edge of the lower surface of the liquid-permeable isolation disc (810), and the scraper assembly comprises a connection ring (160) and a plurality of arc-shaped scraper strips (150); A plurality of arc-shaped scraping strips (150) are attached to the inner wall of the rotary discharge bin (120) in a circumferentially distributed manner; the connecting ring (160) is rotatably arranged at the connection between the rotary discharge bin (120) and the processing cylinder (100); the ends of the plurality of arc-shaped scraping strips (150) are fixedly connected to the connecting ring (160); and the inner side wall of the connecting ring (160) has a plurality of circumferentially distributed protrusions (170); When the stirring disc assembly (800) is at the connection between the rotary discharge bin (120) and the processing cylinder (100), the lower connecting column (860) can be correspondingly inserted between two adjacent protrusions (170).

10. The NdFeB waste extraction and impurity removal device according to claim 8, characterized in that: A control panel (600) is also provided on the outside of the processing cylinder (100), and the outer frame of the control panel (600) is fixed to the fixed ring frame (210) via a support arm (610); the temperature sensor, the heating strip electrical connection and the stirring motor (710) are all electrically connected to the control panel (600).

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