A pretreatment device for recycling and reusing NdFeB waste

Abstract

The present invention discloses a pretreatment device for recycling and reusing NdFeB waste, which belongs to the technical field of NdFeB waste recycling devices. The device comprises a crusher and a filter screen arranged below the crusher, wherein a connecting plate is slidingly arranged between the outlet below the crusher and the filter screen, and a transverse plate is fixedly arranged on the side of the connecting plate away from the crusher, and a plurality of pusher plates for pushing waste on the top of the filter screen are hingedly connected to the bottom of the connecting plate, and the pusher plates and the connecting plates are elastically matched; through the provided pusher plates, on the one hand, the NdFeB waste retained on the filter screen can be cleaned, and on the other hand, when NdFeB waste of larger size cannot pass through the filter screen and is stuck, the pusher plates can quickly rebound and crush the stuck NdFeB waste after deflecting upward for a certain distance, thereby protecting the filter screen to the greatest extent and making the entire pushing process more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of NdFeB waste recycling equipment, in particular to a pretreatment device for recycling and reusing NdFeB waste. Background Art

[0002] The recycling of waste NdFeB mainly involves multiple steps such as roasting, acid dissolution, filtration and extraction. However, in order to ensure the treatment effect of the recycling process, the waste NdFeB is usually crushed and separated before the treatment process.

[0003] Chinese invention patent CN115365265A discloses a device for recycling waste NdFeB magnetic materials and its use method. The waste NdFeB is fed into a crushing box through a feeding hopper. The crushing motor drives the driving gear to rotate, and the driving gear drives two driven gears to rotate. The two driven gears drive two crushing rollers to rotate to crush the waste NdFeB that falls into the crushing box. The crushed waste is then screened through a filter.

[0004] The above-mentioned device filters and screens the crushed waste through the filter screen, and processes the waste remaining above the filter screen through the push plate. However, in actual use, since the NdFeB waste is hard in texture, when it is stuck on the filter screen, the push plate is very likely to damage the filter screen during the pushing process. In summary, the above-mentioned device still has room for improvement.

[0005] Therefore, it is necessary to provide a pretreatment equipment for recycling and reusing NdFeB waste to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a pretreatment device for the recycling and reuse of NdFeB waste, so as to solve the problem that the existing device proposed in the above background technology filters and screens the crushed waste through a filter screen, and processes the waste remaining above the filter screen through a pusher plate. However, in actual use, due to the hard texture of NdFeB waste, when it is stuck on the filter screen, the pusher plate is very likely to damage the filter screen during the pushing process.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a pretreatment device for recycling and reusing NdFeB waste, comprising a crusher and a filter screen arranged below the crusher, a connecting plate is slidingly arranged between the outlet below the crusher and the filter screen, a horizontal plate is fixedly arranged on the side of the connecting plate away from the crusher, and multiple groups of pusher plates for pushing waste on the top of the filter screen are hingedly connected to the bottom of the connecting plate, and the pusher plates are elastically matched with the connecting plate;

[0008] A winding assembly connected to the push plate is provided at the horizontal plate, and the winding assembly and the push plate are connected by a traction rope. The winding assembly is driven to rotate by the rotating shaft under the horizontal plate. When the push plate is squeezed by the waste on the filter screen and deflected upward, the winding assembly matched with this push plate can be driven to rotate by the rotating shaft, so that the push plate can overcome the elastic force between it and the connecting plate and continue to deflect upward. When the rotating shaft is disengaged from the winding assembly, the deflected push plate can rebound and hit the NdFeB waste stuck on the filter screen.

[0009] As a further solution of the present invention: the winding assembly includes a ring arranged on the outside of the rotating shaft, the traction rope is fixed between the push plate and the ring, the ring wall of the ring is elastically connected to the limiting rod, the outer circumferential wall of the rotating shaft is elastically connected to a pressure block that cooperates with the limiting rod, and two pressure rings are symmetrically arranged on the outside of the ring. In the process of the two pressure rings approaching each other, the limiting rod will be squeezed and moved in the direction close to the rotating shaft, and the pressure block is provided with an inclined surface at one end close to the limiting rod.

[0010] As a further solution of the present invention: a protrusion is fixedly provided on one side of the push plate close to the rotating shaft, a lifting unit is provided on the top of the protrusion, a connecting shaft is provided below the horizontal plate, a connecting ear plate is integrally formed at the top position of the pressure ring, and two sections of external threads with opposite screw directions are provided on the connecting shaft close to the connecting ear plate, so that the connecting shaft passes through the connecting ear plate and is threadedly connected to the connecting ear plate. When the push plate deflects upward, it can drive the lifting unit to move upward synchronously, thereby driving the connecting shaft to rotate.

[0011] As a further solution of the present invention: a boss is fixedly provided on one side of the connecting plate close to the protrusion, and an arc-shaped limit spring is connected between the boss and the push plate.

[0012] As a further solution of the present invention: the lifting unit includes a bracket arranged above the protrusion, a roller is rotatably installed at the bottom end of the bracket, the roller is attached to the top of the protrusion, the bracket passes through the boss and slides with it, and a rack is fixedly provided on one end of the bracket passing through the boss, and a driven gear meshing with the rack is provided on the outer side of the connecting shaft, and a stop portion is integrally formed on the bracket, and when the bracket moves upward to the extreme position, the stop portion can contact the bottom surface of the boss.

[0013] As a further solution of the present invention: a strip groove for slidingly cooperating with the pressing block is opened on the outer peripheral wall of the rotating shaft, and a telescopic rod is fixedly arranged between the inner end surface of the strip groove and the pressing block.

[0014] As a further solution of the present invention: a first spring is provided between the inner end surface of the strip groove and the pressing block.

[0015] As a further solution of the present invention: a baffle is fixedly provided on one side of the connecting plate away from the rotating shaft, and the baffle extends downward to one side of the push plate, so that the push plate can initially maintain a vertical state.

[0016] As a further solution of the present invention: the pressure ring is a semicircular structure, and when the two pressure rings are fitted together, they can form a complete circle.

[0017] Compared with the prior art, the beneficial effects of the present invention are: this device can, through the provided push plate, on the one hand clean the NdFeB waste retained on the filter screen; on the other hand, when larger NdFeB waste cannot pass through the filter screen and is stuck, the push plate can quickly rebound and crush the stuck NdFeB waste after deflecting upward for a distance, thereby protecting the filter screen to the maximum extent and making the entire pushing process more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the filter installation structure of the present invention;

[0022] Figure 4 It is the pusher plate distribution diagram of the present invention;

[0023] Figure 5 It is a schematic diagram of the connection structure between the pusher plate and the connecting plate of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the lifting unit of the present invention;

[0025] Figure 7 is a cross-sectional view of the sleeve, the rotating shaft and the pressure ring of the present invention;

[0026] Figure 8 This invention Figure 4 A schematic diagram of the enlarged structure at point A;

[0027] Figure 9 This invention Figure 7 A schematic diagram of the enlarged structure at point B;

[0028] Figure 10 It is a schematic diagram of the push plate of the present invention being squeezed by NdFeB scrap and deflected upward;

[0029] Figure 11 It is a schematic diagram of the card block structure of the present invention.

[0030] In the figure: 1. frame; 2. cross plate; 201. slide bar; 3. crusher; 4. filter screen; 401. wing plate; 4011. slide plate; 4012. sleeve; 5. driving gear; 6. connecting plate; 601. boss; 602. bushing; 603. baffle; 7. push plate; 701. protrusion; 8. rotating shaft; 9. driven gear; 10. limit spring; 11. connecting shaft; 1101. block; 12. guide rod; 13. pressure ring; 1301. connecting ear plate; 14. roller; 1401. bracket; 1402. stopper; 15. collar; 16. traction rope; 17. rack; 18. telescopic rod; 19. pressure block; 1901. inclined plane; 20. limit rod; 2001. protrusion. DETAILED DESCRIPTION

[0031] like Figures 1-10 As shown, a pretreatment equipment for recycling and reusing NdFeB waste includes a frame 1 and a crusher 3 fixed to the top of the frame 1. In actual use, the crusher 3 can be a jaw crusher or the like. A conveyor belt (not shown in the figure) is installed below the crusher 3. The conveyor belt can be distributed perpendicular to the crusher 3 so that the crushed NdFeB waste can fall onto the conveyor belt. Of course, a filter screen 4 for filtering the crushed waste is provided between the outlet below the crusher 3 and the conveyor belt. In this way, it can be ensured that the NdFeB waste falling onto the conveyor belt has roughly the same size, which is conducive to its recycling.

[0032] As the use time increases, some waste materials that are too large to pass through the filter screen 4 will accumulate on the top of the filter screen 4. In order to deal with this part of the waste, this solution is provided with a pusher assembly on one side of the top of the filter screen 4. Specifically, the pusher assembly includes a connecting plate 6 provided between the outlet of the crusher 3 and the filter screen 4. The bottom of the connecting plate 6 is hinged with multiple groups of pusher plates 7 for cleaning the waste materials on the top of the filter screen 4. The pusher plates 7 are elastically fitted with the connecting plate 6.

[0033] In order to drive the push plate 7 to move between the filter 4 and the crusher 3, a cross plate 2 is fixedly provided on the side of the connecting plate 6 away from the crusher 3 and near the top. The cross plate 2 is slidably installed on the frame 1. During actual use, the cross plate 2 can drive the connecting plate 6 and the push plate 7 to move, thereby pushing the large-sized waste retained on the top of the filter 4 out of the filter 4. Afterwards, the staff collects the waste that has not passed through the filter 4 and puts it back into the crusher 3.

[0034] The above method can be used to clean the waste retained on the top of the filter screen 4. However, due to the high hardness and certain brittleness of the NdFeB waste, when the NdFeB waste is stuck on the filter screen 4, the filter screen 4 will be damaged if the NdFeB waste is cleaned by continuously pushing the push plate 7. Based on this, the present invention provides a winding assembly connected to the push plate 7 at the cross plate 2, and the winding assembly and the push plate 7 are connected by a traction rope 16, and the winding assembly is driven to rotate by the rotating shaft 8 under the cross plate 2. When the push plate 7 encounters the waste stuck on the filter screen 4 during movement, the push plate 7 will be squeezed, so that The push plate 7 can be deflected relative to the connecting plate 6 in the direction close to the rotating shaft 8, so that the winding assembly matched with the push plate 7 can be driven to rotate by the rotating shaft 8, so that the push plate 7 can overcome the elastic force between it and the connecting plate 6 and continue to deflect upward. When the rotating shaft 8 is disengaged from the winding assembly, the deflected push plate 7 can quickly bounce down and hit the NdFeB waste stuck on the filter 4. Due to the high brittleness of NdFeB, the impact of the push plate 7 on the NdFeB can break the NdFeB waste stuck on the filter 4, and the broken NdFeB waste is easier to clean or directly fall through the filter 4 onto the conveyor belt. Figures 1-10 As shown, the winding assembly includes a ring 15 sleeved on the outside of the rotating shaft 8, and the traction rope 16 is fixedly connected between the push plate 7 and the outer peripheral wall of the ring 15. The ring wall of the ring 15 is elastically connected to the limit rod 20. Figure 7-Figure 9 As shown, a plurality of pressure blocks 19 are elastically connected to the outer peripheral wall of the rotating shaft 8, and the plurality of pressure blocks 19 are arranged in a one-to-one correspondence with the ring 15 on the outer side of the rotating shaft 8. When one end of the limiting rod 20 is close to the rotating shaft 8 and contacts the pressure block 19 rotating with the rotating shaft 8, the rotating rotating shaft 8 can drive the ring 15 to rotate, thereby winding the traction rope 16 through the ring 15, and the push plate 7 is pulled to deflect upward.

[0035] Furthermore, two pressing rings 13 are symmetrically arranged on the outside of the collar 15. The pressing ring 13 is a semicircular structure. When the two pressing rings 13 are fitted together, they can form a complete circle. When the two pressing rings 13 are close to each other, the limiting rod 20 will be squeezed so that one end moves toward the direction close to the rotating shaft 8 and cooperates with the pressing block 19. Figure 7-Figure 9 As shown, the pressing block 19 is provided with an inclined surface 1901 at one end close to the limiting rod 20. When the rotating shaft 8 drives the pressing block 19 to rotate, the inclined surface 1901 on the pressing block 19 will contact the protruding limiting rod 20, so that the rotating shaft 8 can drive the ring 15 to rotate.

[0036] In order to drive the two pressure rings 13 outside the sleeve 15 to approach each other, this solution has a protrusion 701 fixedly provided on the side of the push plate 7 close to the rotating shaft 8, and a lifting unit is provided on the top of the protrusion 701. A connecting shaft 11 is provided below the horizontal plate 2, and a connecting ear plate 1301 is integrally formed at the top position of the pressure ring 13. Two sections of external threads with opposite screw directions are provided on the connecting shaft 11 near the connecting ear plate 1301, so that the connecting shaft 11 passes through the connecting ear plate 1301 and is threadedly connected to it. When the connecting shaft 11 rotates, it can drive the two connecting ear plates 1301 to approach or separate from each other. When the push plate 7 deflects upward, it can drive the lifting unit to move upward synchronously, thereby driving the connecting shaft 11 to rotate, so that the two pressure rings 13 outside the sleeve 15 can approach each other.

[0037] In actual use, the NdFeB waste crushed by the crusher 3 will fall onto the filter screen 4. The qualified size will pass through the filter screen 4 and fall onto the conveyor belt for transportation, while the larger size waste will be retained on the top of the filter screen 4. When it is necessary to clean the NdFeB waste remaining on the top of the filter screen 4, the connecting plate 6 can be driven by the cross plate 2 to move between the crusher 3 and the filter screen 4. Since the bottom of the push plate 7 can contact the filter screen 4, the waste remaining on the top of the filter screen 4 can be pushed out by the push plate 7.

[0038] When NdFeB scrap is stuck on the filter screen 4, the push plate 7 will be squeezed by the stuck scrap while moving along the filter screen 4, causing the push plate 7 to deflect upward relative to the connecting plate 6 and drive the connecting shaft 11 to rotate through the lifting unit. Figure 10 When the shaft 8 rotates, the pressure block 19 rotates to one side of the limit rod 20 and contacts it, and the inclined surface 1901 on the pressure block 19 cooperates with the limit rod 20, so that the shaft 8 can drive the collar 15 to rotate. When the collar 15 rotates, it can wrap around the traction rope 16 and further drive the push plate 7 to deflect upward, so that the push plate 7 is away from the waste material stuck on the filter screen 4. Here, the speed at which the cross plate 2 drives the push plate 7 to move in the horizontal direction is slow, and the speed at which the shaft 8 rotates is fast, so that when the collar 15 rotates, there is enough time to drive the push plate 7 to deflect upward and away from the stuck waste material;

[0039] As the push plate 7 deflects upward, the lifting unit will also move upward to the limit position. At this time, the push plate 7 stops deflecting upward, so that the pressure between the pressure block 19 and the limit rod 20 increases, so that the pressure block 19 is finally compressed into the rotating shaft 8 and disengaged from the limit rod 20. Under the elastic force between the push plate 7 and the connecting plate 6, the push plate 7 can be driven to deflect downward quickly and hit the NdFeB waste stuck on the filter 4. Since NdFeB waste has high brittleness, when the push plate 7 deflects downward and hits the NdFeB waste, the NdFeB waste can be crushed, so that the waste can be cleaned by the push plate 7 or directly fall onto the conveyor belt through the filter 4, which is beneficial to protect the filter 4 and make the overall operation of the device smooth.

[0040] To sum up, this device can, through the push plate 7, clean up the NdFeB waste retained on the filter screen 4 on the one hand; on the other hand, when larger NdFeB waste cannot pass through the filter screen 4 and is stuck, the push plate 7 can quickly rebound and crush the stuck NdFeB waste after deflecting upward for a distance, thereby protecting the filter screen 4 to the maximum extent and making the entire pushing process more stable.

[0041] Reference Figure 1-Figure 2 As shown, in order to drive the cross plate 2 to move, the present invention has slide bars 201 slidably mounted on both sides of the top of the rack 1. Specifically, a slide rail can be fixed on the rack 1 so that the slide bar 201 is slidably assembled on the slide rail and can only slide along the length direction of the rack 1. A support frame is fixedly arranged between the slide bar 201 and the cross plate 2. Figure 2 It can be seen that a driving gear 5 is provided above one of the slide bars 201, and a transmission tooth meshing with the driving gear 5 is provided on the top of the slide bar 201. The driving gear 5 is rotatably mounted on the frame 1 and is connected to the driving motor on the frame 1. The forward and reverse rotation of the driving motor can drive the cross plate 2 to move in the horizontal direction.

[0042] In order to install the rotating shaft 8, support plates are fixedly provided on both sides of the bottom of the horizontal plate 2. The rotating shaft 8 passes through the support plates and rotates with them through bearings. In order to drive the rotating shaft 8 to rotate, this solution installs a motor on the top of the horizontal plate 2. One end of the rotating shaft 8 passes through the support plate and is connected to the output shaft of the motor through a belt or chain drive.

[0043] Combine Figure 1-Figure 3As shown, wing plates 401 are provided on both sides of the filter screen 4, and the wing plates 401 are fixedly connected to the filter screen 4. A sliding sleeve 4012 is fixedly provided on the top of the wing plate 401, and a slide plate 4011 slidingly connected to the sliding sleeve 4012 is fixedly provided on the bottom of the crusher 3. The slide plate 4011 and the sliding sleeve 4012 are elastically matched. In this way, the filter screen 4 is elastically connected to the crusher 3, or the wing plates 401 on the side of the filter screen 4 are directly elastically connected to the frame 1. In this way, a vibration motor can be installed on the wing plate 401. In the initial state, the push plate 7 moves out of the filter screen 4, and the vibration motor can drive the filter screen 4 to vibrate, which is beneficial to the screening of the filter screen 4. Of course, the filter screen 4 can also be slidably assembled on the frame 1, and the screening effect can be improved by driving the filter screen 4 to slide back and forth left and right through the cooperation of structures such as the crank slider.

[0044] Reference Figure 5 As shown, a mounting plate is sleeved on the outside of the collar 15, so that the collar 15 passes through the mounting plate and rotates with it, and the mounting plate is fixed to the bottom of the transverse plate 2, and a guide rod 12 is fixedly provided on the outer peripheral wall of the pressure ring 13, and a guide plate is fixedly provided on the bottom of the transverse plate 2, so that the guide rod 12 passes through the guide plate and slides with it.

[0045] A boss 601 is fixedly provided on one side of the connecting plate 6 close to the protrusion 701, and a spring seat is fixedly provided on the side opposite to the pushing plate 7. An arc-shaped limit spring 10 is connected between the two spring seats to achieve elastic cooperation between the pushing plate 7 and the connecting plate 6. The above-mentioned traction rope 16 passes through the boss 601 and slides with it.

[0046] Combine Figure 5-Figure 6 As shown, the lifting unit includes a bracket 1401 arranged above the protrusion 701, and a roller 14 is rotatably installed at the bottom end of the bracket 1401. The roller 14 is fitted to the top of the protrusion 701, and the bracket 1401 passes through the boss 601 and slides with it, and a rack 17 is fixedly provided at one end of the bracket 1401 passing through the boss 601, and a driven gear 9 meshing with the rack 17 is provided on the outer side of the connecting shaft 11 through a bearing rotation sleeve, and a stop portion 1402 is integrally formed on the bracket 1401. When the stop portion 1402 moves upward and contacts the bottom surface of the boss 601, it can be blocked. At this time, the bracket 1401 moves upward to the extreme position. Of course, a slot for the rack 17 to pass through can be opened on the horizontal plate 2 to avoid interference between the rack 17 and the horizontal plate 2.

[0047] Both ends of the connecting shaft 11 are rotatably mounted with hanging plates, which are fixedly mounted on the bottom of the horizontal plate 2; Figure 6 、 Figure 11As shown, when the driven gear 9 is installed, a block 1101 can be elastically connected to the outer peripheral wall of the connecting shaft 11 through a spring, and a slot that cooperates with the block 1101 is opened on the inner wall of the driven gear 9. The end of the block 1101 inside the slot is a spherical structure. In the initial state, one end of the block 1101 is inserted into the slot. The driven gear 9 can drive the connecting shaft 11 to rotate through the cooperation between the block 1101 and the slot. When the pressure between the block 1101 and the side edge of the slot increases, one end of the block 1101 can move out of the slot.

[0048] Reference Figure 7-Figure 9 As shown, a strip groove that slides with the pressure block 19 is provided on the outer peripheral wall of the rotating shaft 8, and a telescopic rod 18 is fixedly arranged between the inner end surface of the strip groove and the pressure block 19. Specifically, the telescopic rod 18 includes a sliding rod and a rod sleeve that slide together. When the pressure block 19 is compressed and shrinks to the inside of the strip groove, the sliding rod can compress the gas inside the rod sleeve. In addition, a first spring can be provided between the inner end surface of the strip groove and the pressure block 19. Through the cooperation of the telescopic rod 18 and the first spring, the rotating shaft 8 can drive the ring 15 to rotate and finally drive the push plate 7 to deflect upward.

[0049] from Figure 8 The connection method between the connecting plate 6 and the push plate 7 can be seen in the figure. Specifically, a groove can be opened on the top of the push plate 7, and a shaft sleeve 602 is provided at the groove. The shaft sleeve 602 is fixedly connected to the connecting plate 6, and a pin is fixedly provided on the push plate 7 at the groove. The pin passes through the shaft sleeve 602 and rotates with it. In order to position the push plate 7, a baffle 603 can be fixedly provided on the side of the connecting plate 6 away from the rotating shaft 8. The baffle 603 extends downward to the side of the push plate 7, so that the push plate 7 can maintain a vertical state initially.

[0050] from Figure 9 It can be seen that a "cross" groove is provided on the ring 15 for sliding cooperation with the limit rod 20, and the bottom and bottom of the limit rod 20 are integrally formed with a protrusion 2001, the protrusion 2001 and the limit rod 20 slide in the "cross" groove, and a second spring is provided between the protrusion 2001 and the end face of the "cross" groove to achieve elastic cooperation between the limit rod 20 and the ring 15.

Claims

1. A pretreatment device for recycling and reusing NdFeB waste, comprising a crusher (3) and a filter (4) arranged below the crusher (3), a connecting plate (6) being slidably arranged between the outlet below the crusher (3) and the filter (4), and a transverse plate (2) being fixedly arranged on the side of the connecting plate (6) away from the crusher (3), characterized in that: The bottom of the connecting plate (6) is hinged with a plurality of pusher plates (7) for pushing waste material from the top of the filter screen (4), and the pusher plates (7) are elastically matched with the connecting plate (6); A winding assembly connected to the push plate (7) is provided at the transverse plate (2), and the winding assembly and the push plate (7) are connected by a traction rope (16). The winding assembly is driven to rotate by the rotating shaft (8) below the transverse plate (2). When the push plate (7) is squeezed by the waste on the filter screen (4) and deflected upward, the winding assembly matched with the push plate (7) can be driven to rotate by the rotating shaft (8), so that the push plate (7) can overcome the elastic force between it and the connecting plate (6) and continue to deflect upward. When the rotating shaft (8) is disengaged from the winding assembly, the deflected push plate (7) can rebound and hit the NdFeB waste stuck on the filter screen (4); The winding assembly includes a collar (15) sleeved on the outside of the rotating shaft (8), the traction rope (16) is fixed between the push plate (7) and the collar (15), the ring wall of the collar (15) is elastically connected to the limit rod (20), the outer peripheral wall of the rotating shaft (8) is elastically connected to a pressure block (19) that matches the limit rod (20), two pressure rings (13) are symmetrically arranged on the outside of the collar (15), and when the two pressure rings (13) approach each other, the limit rod (20) will be squeezed and moved in the direction close to the rotating shaft (8), and the end of the pressure block (19) close to the limit rod (20) is provided with an inclined surface (1901); A protrusion (701) is fixedly provided on one side of the push plate (7) close to the rotating shaft (8), and a lifting unit is provided on the top of the protrusion (701). A connecting shaft (11) is provided below the transverse plate (2), and a connecting ear plate (1301) is integrally formed at the top position of the pressure ring (13). Two sections of external threads with opposite screw directions are provided on the connecting shaft (11) close to the connecting ear plate (1301), so that the connecting shaft (11) passes through the connecting ear plate (1301) and is threadedly connected to the connecting ear plate (1301). When the push plate (7) deflects upward, it can drive the lifting unit to move upward synchronously, thereby driving the connecting shaft (11) to rotate.

2. The pretreatment equipment for recycling NdFeB waste according to claim 1, characterized in that: A boss (601) is fixedly provided on one side of the connecting plate (6) close to the protrusion (701), and an arc-shaped limit spring (10) is connected between the boss (601) and the push plate (7).

3. The pretreatment equipment for recycling NdFeB waste according to claim 2, characterized in that: The lifting unit includes a bracket (1401) arranged above the protrusion (701), a roller (14) is rotatably installed on the bottom end of the bracket (1401), and the roller (14) is fitted on the top of the protrusion (701). The bracket (1401) passes through the boss (601) and slides with it, and a rack (17) is fixedly provided on one end of the bracket (1401) passing through the boss (601). The outer side of the connecting shaft (11) is provided with a driven gear (9) meshing with the rack (17). A stopper (1402) is integrally formed on the bracket (1401). When the bracket (1401) moves upward to the limit position, the stopper (1402) can contact the bottom surface of the boss (601).

4. The pretreatment equipment for recycling NdFeB waste according to claim 1, characterized in that: A strip groove is provided on the outer peripheral wall of the rotating shaft (8) and is slidably matched with the pressing block (19). A telescopic rod (18) is fixedly provided between the inner end surface of the strip groove and the pressing block (19).

5. The pretreatment equipment for recycling NdFeB waste according to claim 4, characterized in that: A first spring is provided between the inner end surface of the strip groove and the pressing block (19).

6. The pretreatment equipment for recycling and reusing NdFeB waste according to claim 1, characterized in that: A baffle (603) is fixedly provided on one side of the connecting plate (6) away from the rotating shaft (8), and the baffle (603) extends downward to one side of the push plate (7), so that the push plate (7) can initially maintain a vertical state.

7. The pretreatment equipment for recycling and reusing NdFeB waste according to claim 1, characterized in that: The pressure ring (13) is a semicircular structure, and when the two pressure rings (13) are fitted together, they can form a complete circle.

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