Neodymium iron boron waste crushing device

Abstract

The utility model belongs to the technical field of neodymium iron boron waste recycling, and particularly relates to a neodymium iron boron waste smashing device which comprises a smashing box, two sets of smashing rollers are rotationally connected into the smashing box through shafts, a driving device is fixedly arranged on the outer wall of the smashing box, and the driving device is used for driving the two sets of smashing rollers to rotate. An anti-oxidation assembly is installed in the smashing box and comprises a cooling water pipe and a nitrogen pipe, and one end of the cooling water pipe and one end of the nitrogen pipe are fixedly connected with the inner wall of the smashing box. The crushing roller is driven by the driving device to rotate to crush waste, cooling water is injected from the cooling water pipe and sprayed out from the spray head to cool the crushing roller and the waste, waste oxidation reaction caused by high temperature is relieved, the crushing effect is guaranteed, and the dust suppression effect is achieved; meanwhile, nitrogen is injected from the nitrogen pipe and sprayed out by the spray head to generate protective atmosphere, so that the waste is prevented from being oxidized, and the crushing effect is further improved.

Description

Technical Field

[0001] This utility model relates to the field of neodymium iron boron waste recycling technology, specifically a neodymium iron boron waste crushing device. Background Technology

[0002] Neodymium iron boron (NdFeB), simply put, is a type of magnet. Due to its superior magnetic properties, NdFeB is highly favored in industrial production. However, a large amount of NdFeB waste is inevitably generated during industrial production. If this NdFeB waste is not properly recycled, it will create a large amount of pollution, which is wasteful and environmentally unfriendly. The recycling process of NdFeB waste requires the following steps: crushing → roasting in a rotary kiln → fluorination → ball milling → screening → slurry preparation → hydrochloric acid dissolution → pressure filtration → extraction → separation and re-roasting.

[0003] In existing technologies, NdFeB waste is crushed using a crusher. However, the high temperature generated during crushing causes the iron and rare earth elements in the NdFeB waste to undergo an oxidation reaction with oxygen, generating a large amount of heat and causing the material to sinter, which greatly reduces the crushing effect. Therefore, a NdFeB waste crushing device is proposed to address the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology and solve the above-mentioned technical problems, this utility model proposes a neodymium iron boron waste crushing device.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The NdFeB waste crushing device of this utility model includes a crushing box. Two sets of crushing rollers are rotatably connected inside the crushing box via a shaft. A driving device is fixedly installed on the outer wall of the crushing box. The driving device is used to drive the two sets of crushing rollers to rotate. An anti-oxidation component is installed inside the crushing box. The anti-oxidation component includes a cooling water pipe and a nitrogen pipe. One end of the cooling water pipe and the nitrogen pipe are fixedly connected to the inner wall of the crushing box, and the other end of the cooling water pipe and the nitrogen pipe penetrates through the crushing box. Several nozzles are fixedly installed on the surface of the cooling water pipe and the nitrogen pipe. A filter component is installed inside the crushing box. The filter component includes a coarse filter plate. One end of the coarse filter plate is rotatably connected to the inner wall of the crushing box via a shaft.

[0006] Preferably, the top of the crushing box has a feed inlet, the lower side wall of the crushing box has a discharge outlet, and the coarse filter plate passes through the discharge outlet.

[0007] Preferably, a pull rope is fixedly connected to the upper surface of the coarse filter plate, a slider is fixedly connected to the top of the pull rope, an elliptical ring is slidably connected to the outer wall of the slider, and the inner wall of the elliptical ring is fixedly connected to the shaft of the crushing roller.

[0008] Preferably, the filter assembly further includes a guide plate, which is obliquely and fixedly installed on the inner wall of the pulverizing chamber.

[0009] Preferably, the lower side wall of the pulverizing box is recessed inward to form a groove, and the filter assembly further includes a water collection box, which is fixedly installed at the bottom wall of the groove, and collection boxes are respectively provided on both sides of the water collection box.

[0010] Preferably, the inner wall of the crushing box is fixedly connected with a partition layer, the upper side wall of the groove is fixedly provided with a water outlet pipe, and the lower side wall of the water collection box is fixedly provided with a drain pipe.

[0011] Preferably, a U-shaped fine filter plate is fixedly connected to the top of the water collection box. The fine filter plate is located inside the groove. The area of ​​the fine filter plate above the water collection box is made of permanent magnet material, and the area of ​​the fine filter plate above the collection box is made of non-permanent magnet material.

[0012] Preferably, a scraper is slidably connected to the inner wall of the fine filter plate, and a reciprocating screw is threadedly connected to the surface of the scraper. One end of the reciprocating screw is rotatably connected to the inner wall of the groove via a shaft. A driver is fixedly connected to the inner wall of the groove, and the driving end of the driver is fixedly connected to the other end of the reciprocating screw.

[0013] The advantages of this utility model are:

[0014] 1. This utility model uses a drive device to rotate the crushing roller to crush waste materials. Cooling water is injected through the cooling water pipe and sprayed out through the nozzle to cool and lower the temperature of the crushing roller and waste materials, reducing the oxidation reaction of waste materials caused by high temperature, ensuring the crushing effect, and also having a dust suppression effect. At the same time, nitrogen is injected through the nitrogen pipe and sprayed out through the nozzle to create a protective atmosphere, thereby avoiding the oxidation of waste materials and further improving the crushing effect.

[0015] 2. In this invention, cooling water is discharged through the outlet pipe and falls into the fine filter plate. The fine filter plate filters out fine NdFeB impurities in the cooling water, enabling the cooling water to be reused. At the same time, the fine filter plate is made of permanent magnet material to adsorb NdFeB impurities in the water, further improving the filtration effect of the cooling water. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the crushing box of this utility model;

[0019] Figure 3 This is a schematic diagram of the anti-oxidation component structure of this utility model;

[0020] Figure 4 This is a partial structural diagram of the coarse filter plate of this utility model;

[0021] Figure 5 This utility model Figure 2 Enlarged view of point A.

[0022] In the diagram: 1. Crushing box; 2. Crushing roller; 3. Drive unit; 4. Anti-oxidation component; 41. Cooling water pipe; 42. Nitrogen pipe; 43. Nozzle; 5. Filter assembly; 501. Coarse filter plate; 502. Pull rope; 503. Slider; 504. Elliptical ring; 505. Guide plate; 506. Collection box; 507. Fine filter plate; 508. Scraper; 509. Reciprocating screw; 510. Driver; 511. Water collection box; 6. Groove; 7. Separator layer; 8. Water outlet pipe; 9. Drain pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-5As shown, a neodymium iron boron waste crushing device includes a crushing box 1. Two sets of crushing rollers 2 are rotatably connected inside the crushing box 1 via shafts. A drive device 3 is fixedly installed on the outer wall of the crushing box 1. The drive device 3 includes a crushing motor and two gear rings. The two gear rings are respectively fixedly mounted on the shafts of the two sets of crushing rollers 2, and the two gear rings mesh for transmission. The crushing motor is fixedly installed on the outer wall of the crushing box 1, and the drive end of the crushing motor is fixedly connected to the shaft of one of the crushing rollers 2. The crushing motor is electrically connected to a controller. The crushing motor drives one of the crushing rollers 2 to rotate, and the crushing roller 2 drives the other crushing roller 2 to rotate via the gear rings to crush the waste. The drive device 3 is used to drive the two sets of crushing rollers 2. The crushing roller 2 rotates, and an anti-oxidation component 4 is installed inside the crushing box 1. The anti-oxidation component 4 includes a cooling water pipe 41 and a nitrogen pipe 42. One end of the cooling water pipe 41 and the nitrogen pipe 42 are fixedly connected to the inner wall of the crushing box 1, and the other end of the cooling water pipe 41 and the nitrogen pipe 42 penetrate the crushing box 1. Several nozzles 43 are fixedly installed on the surface of the cooling water pipe 41 and the nitrogen pipe 42. A filter component 5 is installed inside the crushing box 1. The filter component 5 includes a coarse filter plate 501. One end of the coarse filter plate 501 is rotatably connected to the inner wall of the crushing box 1 through a shaft. A feed inlet is opened at the top of the crushing box 1, and a discharge outlet is opened on the lower side wall of the crushing box 1. The coarse filter plate 501 passes through the discharge outlet.

[0025] Specifically, neodymium iron boron waste is added into the crushing box 1 through the feed inlet. The drive device 3 drives the crushing roller 2 to rotate and crush the waste. Cooling water is injected through the cooling water pipe 41 and sprayed out through the nozzle 43 to cool the crushing roller 2 and the waste, reducing the oxidation reaction of the waste caused by high temperature, ensuring the crushing effect, and also having a dust suppression effect. At the same time, nitrogen is injected through the nitrogen pipe 42 and sprayed out through the nozzle 43 to generate a protective atmosphere, thereby avoiding the oxidation of the waste and further improving the crushing effect. The crushed waste falls onto the coarse filter plate 501 and slides down the coarse filter plate 501 to be discharged from the crushing box 1, while the cooling water containing impurities accumulates at the bottom of the crushing box 1.

[0026] A pull rope 502 is fixedly connected to the upper surface of the coarse filter plate 501. A slider 503 is fixedly connected to the top of the pull rope 502. An elliptical ring 504 is slidably connected to the outer wall of the slider 503. The inner wall of the elliptical ring 504 is fixedly connected to the shaft of the crushing roller 2.

[0027] Specifically, when the crushing roller 2 rotates, it drives the elliptical ring 504 to rotate. The rotation of the elliptical plate drives the slider 503 to rise and fall. The rise and fall of the slider 503 drives the coarse filter plate 501 to rotate through the pull rope 502, which can speed up the shaking off of waste on its surface and improve the waste discharge efficiency.

[0028] The filter assembly 5 also includes a guide plate 505, which is obliquely fixedly installed on the inner wall of the pulverizing chamber 1.

[0029] Specifically, the guide plate 505 guides the crushed waste and cooling water to the upper area of ​​the coarse filter plate 501, increasing the movement path of the waste on the coarse filter plate 501. This allows the coarse filter plate 501 to fully shake the waste and shake off the cooling water on its surface, reducing the residual cooling water on the surface of the waste and improving the collection effect of cooling water.

[0030] The lower side wall of the grinding chamber 1 is recessed inward to form a groove 6. The filter assembly 5 also includes a water collection box 511, which is fixedly installed on the bottom wall of the groove 6. Collection boxes 506 are respectively provided on both sides of the water collection box 511. A partition layer 7 is fixedly connected to the inner wall of the grinding chamber 1. A water outlet pipe 8 is fixedly provided on the upper side wall of the groove 6. A drain pipe 9 is fixedly provided on the lower side wall of the water collection box 511.

[0031] Specifically, the cooling water containing impurities in the crushing box 1 is discharged into the water collection box 511 through the water outlet pipe 8, and then discharged through the drain pipe 9.

[0032] A U-shaped fine filter plate 507 is fixedly connected to the top of the water collection box 511. The fine filter plate 507 is located inside the groove 6. The area of ​​the fine filter plate 507 above the water collection box 511 is made of permanent magnet material, such as ferrite permanent magnet material, rare earth permanent magnet material or AlNiCo permanent magnet material, while the area of ​​the fine filter plate 507 above the collection box 506 is made of non-permanent magnet material.

[0033] Specifically, the cooling water is discharged through the outlet pipe 8 and falls into the fine filter plate 507. The fine filter plate 507 filters out the fine NdFeB impurities in the cooling water, so that the cooling water can be reused. At the same time, the fine filter plate 507 is made of permanent magnet material to adsorb the NdFeB impurities in the water, further improving the filtration effect of the cooling water.

[0034] A scraper 508 is slidably connected to the inner wall of the fine filter plate 507. A reciprocating screw 509 is threadedly connected to the surface of the scraper 508. One end of the reciprocating screw 509 is rotatably connected to the inner wall of the groove 6 via a shaft. A driver 510 is fixedly connected to the inner wall of the groove 6. The driving end of the driver 510 is fixedly connected to the other end of the reciprocating screw 509. The controller is electrically connected to the driver 510.

[0035] Specifically, the driver 510 drives the reciprocating screw 509 to rotate, and the reciprocating screw 509 drives the scraper 508 to slide back and forth, thereby pushing the impurities filtered and adsorbed on the surface of the fine filter plate 507 to the top of the collection box 506. Since the area of ​​the fine filter plate 507 located above the collection box 506 is made of non-permanent magnet material, the impurities can fall normally into the collection box 506, realizing the automatic separation and collection of impurities.

[0036] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0037] Working principle: Neodymium iron boron waste is added into the crushing box 1 through the feed inlet. The controller controls the operation of the crushing motor, and the drive device 3 drives the crushing roller 2 to rotate and crush the waste. Cooling water is injected through the cooling water pipe 41 and sprayed out through the nozzle 43 to cool the crushing roller 2 and the waste, reducing the oxidation reaction of the waste caused by high temperature, ensuring the crushing effect, and also having a dust suppression effect. At the same time, nitrogen is injected through the nitrogen pipe 42 and sprayed out through the nozzle 43 to create a protective atmosphere, thereby avoiding the oxidation of the waste and further improving the crushing effect. The crushed waste falls onto the coarse filter plate 501 and slides down the coarse filter plate 501 to be discharged from the crushing box 1. When the crushing roller 2 rotates, it drives the elliptical ring 504 to rotate. The rotation of the elliptical plate drives the slider 503 to rise and fall. The rise and fall of the slider 503 drives the coarse filter plate 501 to rotate through the pull rope 502, thereby accelerating the shaking off of the waste on its surface and improving the waste discharge efficiency.

[0038] Cooling water containing impurities in the pulverizing chamber 1 is discharged through the outlet pipe 8 and falls into the fine filter plate 507. The fine filter plate 507 filters out the fine NdFeB impurities in the cooling water, allowing the cooling water to be reused. At the same time, the fine filter plate 507 is made of permanent magnet material to adsorb the NdFeB impurities in the water, further improving the filtration effect of the cooling water. The controller controls the driver 510 to run, which drives the reciprocating screw 509 to rotate. The reciprocating screw 509 drives the scraper 508 to slide back and forth, thereby pushing the impurities filtered and adsorbed on the surface of the fine filter plate 507 to the top of the collection box 506. Since the area of ​​the fine filter plate 507 above the collection box 506 is made of non-permanent magnet material, the impurities can fall normally into the collection box 506, realizing the automatic separation and collection of impurities.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A neodymium iron boron waste crushing device, comprising a crushing box (1), characterized in that: The inside of the crushing box (1) is connected to two sets of crushing rollers (2) by a shaft. The outer wall of the crushing box (1) is fixedly provided with a driving device (3). The driving device (3) is used to drive the two sets of crushing rollers (2) to rotate. The inside of the crushing box (1) is equipped with an anti-oxidation component (4). The anti-oxidation component (4) includes a cooling water pipe (41) and a nitrogen pipe (42). One end of the cooling water pipe (41) and the nitrogen pipe (42) are fixedly connected to the inner wall of the crushing box (1), and the other end of the cooling water pipe (41) and the nitrogen pipe (42) penetrate the crushing box (1). Several nozzles (43) are fixedly provided on the surface of the cooling water pipe (41) and the nitrogen pipe (42). The inside of the crushing box (1) is equipped with a filter component (5). The filter component (5) includes a coarse filter plate (501). One end of the coarse filter plate (501) is rotatably connected to the inner wall of the crushing box (1) by a shaft.

2. The NdFeB waste crushing device according to claim 1, characterized in that: The crushing box (1) has a feed inlet at the top and a discharge outlet on the lower side wall of the crushing box (1). The coarse filter plate (501) passes through the discharge outlet.

3. The NdFeB waste crushing device according to claim 1, characterized in that: A pull rope (502) is fixedly connected to the upper surface of the coarse filter plate (501), and a slider (503) is fixedly connected to the top of the pull rope (502). An elliptical ring (504) is slidably connected to the outer wall of the slider (503), and the inner wall of the elliptical ring (504) is fixedly connected to the shaft of the crushing roller (2).

4. The NdFeB waste crushing device according to claim 1, characterized in that: The filter assembly (5) also includes a guide plate (505), which is obliquely fixedly installed on the inner wall of the pulverizing box (1).

5. The NdFeB waste crushing device according to claim 1, characterized in that: The lower side wall of the pulverizing box (1) is recessed inward to form a groove (6). The filter assembly (5) also includes a water collection box (511). The water collection box (511) is fixedly installed at the bottom wall of the groove (6). Collection boxes (506) are respectively provided on both sides of the water collection box (511).

6. The NdFeB waste crushing device according to claim 5, characterized in that: The inner wall of the crushing box (1) is fixedly connected with a partition layer (7), the upper side wall of the groove (6) is fixedly provided with a water outlet pipe (8), and the lower side wall of the water collection box (511) is fixedly provided with a drain pipe (9).

7. The NdFeB waste crushing device according to claim 5, characterized in that: A U-shaped fine filter plate (507) is fixedly connected to the top of the water collection box (511). The fine filter plate (507) is located inside the groove (6). The area of ​​the fine filter plate (507) above the water collection box (511) is made of permanent magnet material, and the area of ​​the fine filter plate (507) above the collection box (506) is made of non-permanent magnet material.

8. The NdFeB waste crushing device according to claim 7, characterized in that: The inner wall of the fine filter plate (507) is slidably connected to a scraper (508), and the surface of the scraper (508) is threadedly connected to a reciprocating screw (509). One end of the reciprocating screw (509) is rotatably connected to the inner wall of the groove (6) via a shaft. The inner wall of the groove (6) is fixedly connected to a driver (510), and the driving end of the driver (510) is fixedly connected to the other end of the reciprocating screw (509).

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