Demagnetizing and screening device for neodymium iron boron waste recovery

Abstract

The utility model relates to the technical field of neodymium iron boron waste recovery, and discloses a neodymium iron boron waste recovery demagnetizing and screening device which comprises a supporting bottom plate, the top of the supporting bottom plate is fixedly connected with a sliding outer frame, the outer side of the sliding outer frame is fixedly connected with a screening mechanism, the bottom of the demagnetizing mechanism is fixedly connected with an indirect discharging assembly, and the indirect discharging assembly is fixedly connected with a demagnetizing mechanism. The screening mechanism comprises a supporting frame, a second sliding frame is slidably connected to a sliding groove in the lower portion of the inner side of a sliding outer frame, a first sliding frame is slidably connected to the middle of a sliding groove in the inner side of the sliding outer frame, and a braking assembly is slidably connected to the inner side of the first sliding frame. The top of the first sliding frame is rotationally connected with a rotating connecting rod. According to the neodymium-iron-boron waste material screening device, due to the two-stage screening design of the large-diameter screening hopper and the small-diameter screening hopper, neodymium-iron-boron waste materials can be screened in a classified mode, large-particle waste materials, medium-particle waste materials and fine-particle waste materials are separated out, and the quality of recycled products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to neodymium iron boron waste recovery technical field especially relates to a kind of demagnetization screening devices for neodymium iron boron waste recovery. BACKGROUND

[0002] In the process of modern industry and electronic technology rapid development, neodymium iron boron permanent magnet material is widely used in many key fields by virtue of magnetic energy product, coercive force and high energy density etc., neodymium iron boron permanent magnet material inevitably produces a large amount of waste in production and use process, in production and processing link, cutting, grinding, stamping etc. process will produce a large amount of scrap and corner material, these waste shapes are different, size is different, these waste cannot be properly handled, not only will cause rare earth resources huge waste, also possibly because of the particularity of rare earth elements to soil, water and other environmental elements cause potential pollution, destroy ecological balance.

[0003] In the key process of neodymium iron boron waste recovery, demagnetization and screening are extremely important links, conventional alternating magnetic field demagnetization, for shape complex, magnetic inhomogeneous waste, in screening link, ordinary screening equipment faces demagnetization incomplete waste, screening through screen.

[0004] In prior art, using screen to screen can not effectively separate impurities and neodymium iron boron, and insufficient screening leads to sharp decline in screening efficiency, so that frequent shutdown cleaning is needed, and therefore a kind of demagnetization screening device for neodymium iron boron waste recovery is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a kind of demagnetization screening device for neodymium iron boron waste recovery, to improve the screening problem of part of device in prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of demagnetization screening device for neodymium iron boron waste recovery, including support base plate, the top of support base plate is fixedly connected with sliding outer frame, the outer side of sliding outer frame is fixedly connected with screening mechanism, the inner side of sliding outer frame is fixedly connected with frame, the inner side of frame is fixedly connected with demagnetization mechanism, the bottom of demagnetization mechanism is fixedly connected with indirect discharging assembly, the outer side of frame is provided with discharge port, the screening mechanism includes support frame, the outer side of support frame is fixedly connected in the outer side of sliding outer frame, the inner side lower part sliding groove of sliding outer frame is slidably connected with sliding frame two, the inner side sliding groove middle part of sliding outer frame is slidably connected with sliding frame one, the inner side of sliding frame one is slidably connected with brake assembly, the top of sliding frame one is rotatably connected with rotating connecting rod;

[0007] As a further description of the above technical solution: the brake assembly comprises a sliding plate, the outer side of the sliding plate is slidingly connected to the inner side of the sliding frame one, the outer side of the support frame is fixedly connected with a motor, the inner side of the sliding plate is fixedly connected with a fixed connecting column, and the driving end of the motor is fixedly connected to the outer side of the fixed connecting column.

[0008] As a further description of the above technical solution: the outer side of the support frame is fixedly connected with a fixed limiting block, the outer side of the fixed limiting block is rotatably connected to the inner side of the rotating connecting rod, and the outer side of the sliding frame two is rotatably connected to the other end of the rotating connecting rod, i.e., the end away from the sliding frame one.

[0009] As a further description of the above technical solution: the inner side of the frame is slidingly connected with a large-diameter sieve hopper, and the outer side of the large-diameter sieve hopper is fixedly connected to the outer side of the sliding frame one.

[0010] As a further description of the above technical solution: the outer side of the sliding frame two is fixedly connected with a small-diameter sieve hopper, and the outer side of the small-diameter sieve hopper is slidingly connected to the inner side of the frame.

[0011] As a further description of the above technical solution: the demagnetization mechanism comprises a fixed frame, the outer side of the fixed frame is fixedly connected to the inner side of the frame, and the inner side of the fixed frame is fixedly connected with a coil column.

[0012] As a further description of the above technical solution: the inner side of the coil column is slidingly connected with a coil ring, and the outer side of the coil ring is fixedly connected to the inner side of the fixed frame.

[0013] As a further description of the above technical solution: the indirect blanking assembly comprises a supporting spring, the top of the supporting spring is fixedly connected to the bottom of the fixed frame, and the other end of the supporting spring is fixedly connected with a supporting plate.

[0014] The utility model has the advantages of:

[0015] 1、The two-stage screening design of the large-diameter sieve hopper and the small-diameter sieve hopper can classify and screen the neodymium iron boron waste, separate the waste of large particles, medium particles and small particles, improve the purity of the recovered waste, and facilitate subsequent adoption of more suitable recovery processes for waste of different particle sizes, thereby improving the quality of the recovered products.

[0016] 2、The structure composed of the coil column and the coil ring generates an alternating magnetic field to demagnetize the neodymium iron boron waste, utilizes the hysteresis loop decrement principle to repeatedly adjust the direction of the magnetic domains inside the waste along with the change of the magnetic field direction and gradually disordered, effectively realizes demagnetization, and ensures that the waste will not affect screening and other recovery steps in the subsequent processing process due to magnetism. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A three-dimensional schematic view of a demagnetization and screening device for recycling neodymium iron boron waste is provided for the utility model;

[0018] Figure 2 A structural schematic view of a sliding frame one of a demagnetization and screening device for recycling neodymium iron boron waste is provided for the utility model;

[0019] Figure 3 A structural schematic view of a large-diameter sieve hopper of a demagnetization and screening device for recycling neodymium iron boron waste is provided for the utility model;

[0020] Figure 4 For Figure 3 An enlarged view of A in the middle.

[0021] Legend:

[0022] 1, support bottom plate; 2, sliding outer frame; 3, screening mechanism; 301, support frame; 302, motor; 303, sliding plate; 304, fixed connection column; 305, sliding frame one; 306, sliding frame two; 307, rotating connecting rod; 308, fixed limiting block; 309, large-diameter sieve hopper; 3010, small-diameter sieve hopper; 4, frame; 5, demagnetization mechanism; 501, fixed frame; 502, coil column; 503, coil ring; 6, discharge port; 7, support plate; 8, support spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] With reference to Figures 1 to 3 , the utility model provides an embodiment: a demagnetization and screening device for recycling neodymium iron boron waste, including support bottom plate 1, the top of support bottom plate 1 is fixedly connected with sliding outer frame 2, the outside of sliding outer frame 2 is fixedly connected with screening mechanism 3, the inside of sliding outer frame 2 is fixedly connected with frame 4, the inside of frame 4 is fixedly connected with demagnetization mechanism 5, the bottom of demagnetization mechanism 5 is fixedly connected with indirect unloading assembly, support bottom plate 1 is used for providing support for the sliding outer frame 2, screening mechanism 3, frame 4 above, the outside of frame 4 is provided with discharge port 6, sliding outer frame 2 is used for connecting support bottom plate 1 and screening mechanism 3, discharge port 6 is used for outputting the waste screened out;

[0025] The screening mechanism 3 comprises a support frame 301 fixedly connected to the outer side of the sliding outer frame 2, a sliding frame two 306 slidably connected to the inner side lower groove of the sliding outer frame 2, and a sliding frame one 305 slidably connected to the inner side middle groove of the sliding outer frame 2. The sliding frame two 306 is used for sliding in the inner side of the sliding outer frame 2 and driving the small-diameter sieve hopper 3010 to slide up and down for screening. The inner side of the sliding frame one 305 is slidably connected to a brake assembly, and the top of the sliding frame one 305 is rotatably connected to a rotating connecting rod 307.

[0026] The brake assembly comprises a sliding plate 303 slidably connected to the inner side of the sliding frame one 305. The sliding plate 303 is used for driving the sliding frame one 305 to move. The sliding frame one 305 is used for providing a sliding rail for the sliding plate 303 and driving the rotating connecting rod 307 to rotate under the fixation of a fixed limiting block 308. The outer side of the support frame 301 is fixedly connected to a motor 302. The support frame 301 is used for providing a mounting point for the motor 302. The motor 302 is used for driving a fixed connecting column 304 to rotate. The inner side of the sliding plate 303 is fixedly connected to the fixed connecting column 304. The driving end of the motor 302 is fixedly connected to the outer side of the fixed connecting column 304. The outer side of the support frame 301 is fixedly connected to the fixed limiting block 308. The fixed limiting block 308 is used for providing a rotating fulcrum for the rotating connecting rod 307 and limiting the movement trajectory of the rotating connecting rod 307. The outer side of the fixed limiting block 308 is rotatably connected to the inner side of the rotating connecting rod 307. The 207 is used for transmitting the movement of the sliding frame one 305 to the sliding frame two 306 to realize the collaborative movement of the two, guarantee that the large-diameter sieve hopper 309 and the small-diameter sieve hopper 3010 can be synchronized but have differentiated screening work, optimize the screening process, improve the classification effect, and the outer side of the sliding frame two 306 is rotatably connected to the other end of the rotating connecting rod 307, i.e., the end away from the sliding frame one 305.

[0027] The inner side of the frame 4 is slidably connected to the large-diameter sieve hopper 309. The large-diameter sieve hopper 309 is used for preliminarily screening the neodymium iron boron waste, intercepting the waste with a larger size that cannot pass through the sieve hole in the hopper, and allowing the smaller particles of the waste to pass through smoothly. The outer side of the large-diameter sieve hopper 309 is fixedly connected to the outer side of the sliding frame one 305. The outer side of the sliding frame two 306 is fixedly connected to the small-diameter sieve hopper 3010. The outer side of the small-diameter sieve hopper 3010 is slidably connected to the inner side of the frame 4. The sieve hole size of the small-diameter sieve hopper 3010 is smaller than that of the large-diameter sieve hopper 309, so as to receive the waste after the preliminary screening of the large-diameter sieve hopper 309 and perform secondary screening on the waste.

[0028] Referring to Figure 1 , Figure 2 , Figure 4The demagnetizing mechanism 5 comprises a fixed frame 501 for providing protection and support for a coil column 502 and a coil ring 503, the outer side of the fixed frame 501 is fixedly connected to the inner side of the frame 4, the inner side of the fixed frame 501 is fixedly connected with the coil column 502, the inner side of the coil column 502 is slidingly connected with the coil ring 503, the coil column 502 is used to cooperate with the coil ring 503 to form a core component for generating an alternating magnetic field, the outer side of the coil ring 503 is fixedly connected to the inner side of the fixed frame 501, and the coil ring 503 is used to jointly build a complete magnetic field generating structure with the coil column 502, the indirect discharging assembly comprises a supporting spring 8, the top of the supporting spring 8 is fixedly connected to the bottom of the fixed frame 501, the supporting spring 8 is used to support the fixed frame 501 and the structure above the fixed frame 501 in a normal state by using the elastic property of the supporting spring 8, when the waste accumulates to a certain weight, the spring is compressed to trigger the discharging action, and the supporting spring 8 plays a role of weight sensing and buffering, and the discharging process is automatically started according to the amount of waste, so that automatic operation is realized, and the other end of the supporting spring 8 is fixedly connected with a supporting plate 7.

[0029] Working principle: The collected neodymium iron boron waste is poured from above the fixed frame 501, the coil structure composed of the coil column 502 and the coil ring 503 is energized, after energization, the coil generates an alternating magnetic field, the neodymium iron boron waste in the magnetic field range is affected by the alternating magnetic field, the internal magnetic domains of the neodymium iron boron waste repeatedly adjust the direction with the change of the magnetic field direction, and the magnetic hysteresis loop decreases, so that the magnetic domain arrangement of the waste gradually becomes disordered, thereby realizing demagnetization, when a certain amount of waste is accumulated, the supporting spring 8 reaches the limit to make the supporting plate 7 descend to push the demagnetized waste downward to the upper part of the large-diameter sieve hopper 309.

[0030] Meanwhile, the motor 302 supported by the supporting frame 301 drives the fixed connecting column 304 to rotate, the fixed connecting column 304 drives the sliding plate 303 to slide in the inner side of the sliding frame one 305 and the sliding outer frame 2, so as to drive the large-diameter sieve hopper 309 to slide up and down for large-particle screening, the screened large particles are output from the discharge port 6, meanwhile, the rotating connecting rod 307 one end is driven to rotate with the fixed limiting block 308, and the sliding frame two 306 is also driven to slide in the inner side of the sliding outer frame 2, so that the small-diameter sieve hopper 3010 reselects the waste screened by the large-diameter sieve hopper 309, the screened waste is output from another discharge port 6, and finally the fine waste is output from the bottom outlet, so that grading and screening are realized.

[0031] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A demagnetization and screening device for recycling neodymium iron boron scrap, comprising a support base plate (1), characterized in that: The top of the supporting bottom plate (1) is fixedly connected with a sliding outer frame (2), the outer side of the sliding outer frame (2) is fixedly connected with a screening mechanism (3), the inner side of the sliding outer frame (2) is fixedly connected with a frame (4), the inner side of the frame (4) is fixedly connected with a demagnetization mechanism (5), the bottom of the demagnetization mechanism (5) is fixedly connected with an indirect discharging assembly, and the outer side of the frame (4) is provided with a discharge port (6). The screening mechanism (3) comprises a supporting frame (301), the outer side of the supporting frame (301) is fixedly connected to the outer side of the sliding outer frame (2), the inner side of the sliding outer frame (2) is slidably connected with a sliding frame two (306), the inner side of the sliding outer frame (2) is slidably connected with a sliding frame one (305), the inner side of the sliding frame one (305) is slidably connected with a brake assembly, and the top of the sliding frame one (305) is rotatably connected with a rotating connecting rod (307).

2. The demagnetization and screening device for recycling neodymium iron boron waste according to claim 1, characterized in that: The brake assembly comprises a sliding plate (303), the outer side of the sliding plate (303) is slidably connected to the inner side of the sliding frame one (305), the outer side of the supporting frame (301) is fixedly connected with a motor (302), the inner side of the sliding plate (303) is fixedly connected with a fixed connection column (304), and the driving end of the motor (302) is fixedly connected to the outer side of the fixed connection column (304).

3. The demagnetization and screening device for recycling neodymium iron boron waste according to claim 2, characterized in that: The outer side of the supporting frame (301) is fixedly connected with a fixed limiting block (308), the inner side of the fixed limiting block (308) is rotatably connected to the inner side of the rotating connecting rod (307), and the outer side of the sliding frame two (306) is rotatably connected to the other end of the rotating connecting rod (307), that is, the end away from the sliding frame one (305).

4. The demagnetization and screening device for recycling neodymium iron boron waste according to claim 3, characterized in that: The inner side of the frame (4) is slidably connected with a large-diameter sieve (309), and the outer side of the large-diameter sieve (309) is fixedly connected to the outer side of the sliding frame one (305).

5. The demagnetization and screening device for recycling neodymium iron boron waste according to claim 4, characterized in that: The outer side of the sliding frame two (306) is fixedly connected with a small-diameter sieve (3010), and the outer side of the small-diameter sieve (3010) is slidably connected to the inner side of the frame (4).

6. The demagnetization and screening device for recycling neodymium iron boron waste according to claim 1, characterized in that: The demagnetization mechanism (5) comprises a fixed frame (501), the outer side of the fixed frame (501) is fixedly connected to the inner side of the frame (4), and the inner side of the fixed frame (501) is fixedly connected with a coil column (502).

7. The demagnetization and sizing apparatus for recycling neodymium iron boron scrap according to claim 6, characterized in that: The inner side of the coil column (502) is slidably connected with a coil ring (503), and the outer side of the coil ring (503) is fixedly connected to the inner side of the fixed frame (501).

8. The demagnetization and screening device for recycling neodymium iron boron waste according to claim 6, characterized in that: The indirect discharging assembly comprises a supporting spring (8), the top of the supporting spring (8) is fixedly connected to the bottom of the fixed frame (501), and the other end of the supporting spring (8) is fixedly connected with a supporting plate (7).

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