Raw material cooling device for producing and processing rapid-quenching samarium-iron-based magnetic powder

Abstract

The utility model relates to a raw material cooling device for producing and processing rapid-quenching samarium-iron-based magnetic powder, which comprises a rapid-quenching samarium-iron-based magnet conveying mechanism. According to the technical key points, the rapid quenching samarium-iron-based magnet conveying mechanism comprises a plurality of horizontal spiral conveying cylinders which are stacked together and are sequentially communicated, a transmission mechanism and a receiving hopper arranged at one end of the top surface of the highest horizontal spiral conveying cylinder, a cooling water jacket is arranged on the outer wall of each horizontal spiral conveying cylinder, and a central shaft of each horizontal spiral conveying cylinder is a hollow shaft; the periphery of one end, close to the transmission mechanism, of the hollow shaft is sleeved with a water inlet ring, the bottom of the water inlet ring is fixedly connected with the outer wall of the horizontal spiral conveying cylinder, an annular water containing groove is formed in the inner circumferential face of the water inlet ring, and a water inlet communicated with the annular water containing groove is formed in the outer wall of the water inlet ring. A water outlet is formed in the other end of the hollow shaft. According to the device, the cooling time is further shortened, so that the production efficiency of the rapid quenching neodymium-iron-boron magnetic powder is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of magnet production equipment, specifically to a raw material cooling device for the production and processing of rapidly quenched samarium iron-based magnetic powder. Background Technology

[0002] Rapidly quenched samarium iron-based magnetic powder can be used as a raw material for bonding magnets. It is made by crushing sheet-like rapidly quenched samarium iron-based magnets. However, the sheet-like rapidly quenched samarium iron-based magnets are at a high temperature after sintering and cannot be crushed directly. A cooling device is required for cooling.

[0003] CN 218333315 U discloses a raw material cooling mechanism for the production and processing of rapidly quenched NdFeB magnetic powder. It includes a cooling box with a through hole on one side, a storage box inside, and a driving assembly on one side. The storage box is rotatably connected to the inside of the cooling box via the driving assembly. A fixing frame is fixedly connected to one side of the storage box, and cylinders are fixedly connected to both sides of the fixing frame. A bonding plate is fixedly connected to the output end of each cylinder. The hot air emitted by the magnet in the storage box is absorbed and discharged by an exhaust fan, reducing heat generation and preventing heat accumulation. Two sets of cooling fans dissipate heat from the magnet in the storage box, accelerating heat dissipation and shortening the cooling time of the magnet. This cooling device can also be used to cool rapidly quenched SmFeB-based magnets after winding, but it still has the following problems: 1. A transmission device is needed to transport the high-temperature rapidly quenched SmFeB-based magnet to the cooling mechanism, which prolongs the cooling time during transportation; 2. Air cooling is not suitable for high-temperature environments and has low cooling efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a reasonably structured and reliable cooling device for raw materials used in the production and processing of rapidly quenched NdFeB magnetic powder, which solves the above-mentioned problems, further shortens the cooling time, and thus improves the production efficiency of rapidly quenched NdFeB magnetic powder.

[0005] The technical solution of this utility model is:

[0006] A raw material cooling device for the production and processing of rapidly quenched samarium iron-based magnetic powder includes a rapidly quenched samarium iron-based magnet conveying mechanism. The key technical features are: the rapidly quenched samarium iron-based magnet conveying mechanism includes multiple horizontal spiral conveying cylinders stacked together and connected sequentially; a transmission mechanism connected to the central shaft of each horizontal spiral conveying cylinder; and a receiving hopper located at one end of the top surface of the highest horizontal spiral conveying cylinder. The outer wall of each horizontal spiral conveying cylinder is provided with a cooling water jacket. The central shaft of each horizontal spiral conveying cylinder is a hollow shaft. A water inlet ring is fitted around the outer circumference of the hollow shaft near the transmission mechanism. The bottom of the water inlet ring is connected and fixed to the outer wall of the horizontal spiral conveying cylinder. An annular water groove is provided on the inner circumferential surface of the water inlet ring. A water inlet communicating with the annular water groove is provided on the outer wall of the water inlet ring. Multiple radial through holes communicating with the annular water groove are provided on the hollow shaft. An outlet is provided at the other end of the hollow shaft.

[0007] The above-mentioned cooling device for raw materials used in the production and processing of rapidly quenched samarium iron-based magnetic powder has a dehumidification pipe for leading out a cooling water jacket on the top surface of the horizontal spiral conveyor cylinder, and a filter screen is fixed at the outer end of the dehumidification pipe.

[0008] The above-mentioned cooling device for raw materials used in the production and processing of rapidly quenched samarium iron-based magnetic powder has a retractable corrugated pipe connected between the lower end of the receiving hopper and the feed inlet of the horizontal spiral conveyor cylinder via an upper flange and a lower flange. The edges of the upper flange and the lower flange are respectively provided with outward expansion plates, and a lifting cylinder is connected between the two outward expansion plates.

[0009] The aforementioned raw material cooling device for the rapid quenching of samarium iron-based magnetic powder production and processing includes a transmission mechanism comprising a gear transmission structure located on the central shaft of each horizontal spiral conveyor cylinder and a drive motor reducer connected to the central shaft where the input end of the gear transmission structure is located.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model is installed between a sintering furnace and a crusher, using a receiving hopper to receive sintered rapidly quenched NdFeB magnets. The rapidly quenched NdFeB magnets achieve both conveying and cooling as they pass through stacked horizontal spiral conveyor cylinders. During this process, the cooling water jacket outside the horizontal spiral conveyor cylinders and the cooling medium flowing through the central shaft simultaneously act on the rapidly quenched NdFeB magnets, providing cooling both inside and outside the magnets. Based on the above, this utility model shortens the cooling time, thereby improving the production efficiency of rapidly quenched NdFeB magnetic powder.

[0012] 2. The various dehumidification pipes installed on the horizontal spiral conveyor cylinder are conducive to the discharge of hot and moist air, and to cooling.

[0013] 3. The receiving hopper can be raised to a position by the lifting cylinder to get closer to the discharge port of the sintering furnace, ensuring production safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 Enlarged view of section A.

[0016] In the diagram: 1. Drive motor reducer, 2. Gear transmission structure, 3. Feeding hopper, 4. Telescopic corrugated pipe, 5. Lifting cylinder, 6. Drainage pipe, 7. Filter screen, 8. Cooling water jacket, 9. Horizontal spiral conveyor, 10. Central shaft, 11. Water outlet, 12. Support structure, 13. Water inlet, 14. Water inlet ring, 15. Radial through hole, 16. Annular water tank. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figure 1 , Figure 2 As shown, the raw material cooling device for the production and processing of rapidly quenched samarium iron-based magnetic powder includes a rapidly quenched samarium iron-based magnet conveying mechanism.

[0019] The fast-quenching samarium iron-based magnet conveying mechanism includes two horizontal spiral conveying cylinders 9 stacked together and connected in sequence, a transmission mechanism connected to the central shaft 10 of each horizontal spiral conveying cylinder 9, and a receiving hopper 3 located at one end of the top surface of the highest horizontal spiral conveying cylinder 9.

[0020] The outer wall of the horizontal spiral conveyor cylinder 9 is provided with a cooling water jacket 8, and the central shaft 10 of the horizontal spiral conveyor cylinder 9 is a hollow shaft. A water inlet ring 14 is fitted around the outer circumference of one end of the hollow shaft near the transmission mechanism. The bottom of the water inlet ring 14 is connected and fixed to the outer wall of the horizontal spiral conveyor cylinder 9. The inner circumferential surface of the water inlet ring 14 is provided with an annular water groove 16. The outer wall of the water inlet ring 14 is provided with a water inlet 13 communicating with the annular water groove 16. The hollow shaft is provided with multiple radial through holes 15 communicating with the annular water groove 16. The other end of the hollow shaft is provided with a water outlet 11.

[0021] In this embodiment, the top surface of the horizontal spiral conveyor 9 is further provided with a dehumidification pipe 6 for leading out the cooling water jacket 8, and a filter screen 7 is fixed to the outer end of the dehumidification pipe 6. A retractable corrugated pipe 4 is connected between the lower end of the receiving hopper 3 and the feed inlet of the horizontal spiral conveyor 9 via an upper flange and a lower flange. The edges of the upper flange and the lower flange are respectively provided with outward expansion plates, and a lifting cylinder 5 is connected between the two outward expansion plates. The transmission mechanism includes a gear transmission structure 2 mounted on the central shaft 10 of the two horizontal spiral conveyors 9, and a drive motor reducer 1 connected to the central shaft 10 where the input end of the gear transmission structure 2 is located.

[0022] Working principle:

[0023] 1. The present invention is installed between the sintering furnace and the crusher using the support structure 12, and the receiving hopper 3 is used to receive the sintered fast-quenched samarium iron-based magnet.

[0024] 2. The rapidly quenched samarium iron-based magnets achieve a dual function of conveying and cooling as they pass through the stacked horizontal spiral conveyor cylinders 9. During this process, the cooling water jacket 8 outside the horizontal spiral conveyor cylinder 9 and the cooling medium introduced into the central shaft 10 simultaneously act on the rapidly quenched samarium iron-based magnets, providing cooling both inside and outside the magnets. The central shaft 10 receives water through the water inlet ring 14. The water inlet ring 14 rotates relative to the central shaft 10, but this does not affect the flow of cooling water into the central shaft 10.

[0025] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A raw material cooling device for the production and processing of rapidly quenched samarium iron-based magnetic powder, comprising a rapidly quenched samarium iron-based magnet conveying mechanism, characterized in that: The rapid quenching samarium iron-based magnet conveying mechanism includes multiple horizontal spiral conveying cylinders stacked together and connected in sequence, a transmission mechanism connected to the central shaft of each horizontal spiral conveying cylinder, and a receiving hopper located at one end of the top surface of the highest horizontal spiral conveying cylinder. The outer wall of each horizontal spiral conveying cylinder is provided with a cooling water jacket. The central shaft of each horizontal spiral conveying cylinder is a hollow shaft. A water inlet ring is fitted around the outer circumference of the hollow shaft near the transmission mechanism. The bottom of the water inlet ring is connected and fixed to the outer wall of the horizontal spiral conveying cylinder. The inner circumferential surface of the water inlet ring is provided with an annular water groove. The outer wall of the water inlet ring is provided with a water inlet communicating with the annular water groove. The hollow shaft is provided with multiple radial through holes communicating with the annular water groove. The other end of the hollow shaft is provided with a water outlet.

2. The raw material cooling device for rapid quenching samarium iron-based magnetic powder production and processing according to claim 1, characterized in that: The top surface of the horizontal spiral conveyor cylinder is provided with a dehumidification pipe for leading out the cooling water jacket, and a filter screen is fixed at the outer end of the dehumidification pipe.

3. The raw material cooling device for rapid quenching samarium iron-based magnetic powder production and processing according to claim 1, characterized in that: The lower end of the receiving hopper is connected to the feed inlet of the horizontal spiral conveyor by an upper flange and a lower flange, and an extendable bellows is provided on the edges of the upper flange and the lower flange, and a lifting cylinder is connected between the two extendable plates.

4. The raw material cooling device for rapid quenching samarium iron-based magnetic powder production and processing according to claim 1, characterized in that: The transmission mechanism includes a gear transmission structure located on the central shaft of each horizontal spiral conveyor drum, and a drive motor reducer connected to the central shaft where the input end of the gear transmission structure is located.

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