Search

CN-224208166-U - Neodymium iron boron air current mill

CN224208166UCN 224208166 UCN224208166 UCN 224208166UCN-224208166-U

Abstract

The utility model discloses a neodymium iron boron airflow mill, which comprises a lower shell and an upper shell, wherein the upper shell is fixedly arranged at the top of the lower shell, an upper fixing frame and a lower supporting frame are respectively and fixedly arranged at the upper side and the lower side in the lower shell, a milling assembly is fixedly arranged between the upper fixing frame and the lower supporting frame, an air inlet pipe is fixedly arranged at the inner lower side of the lower shell, a vibrating assembly is fixedly arranged at the bottom of the lower shell, and a feed back assembly is fixedly arranged at the outer side of the lower shell. This neodymium iron boron air current mill, material get into outside guide cover after, by driving motor one drive pivot one rotatory, the pivot one drives toper cover and dispersion impeller rotation, and the rotation of toper cover makes milling roll fast rotation, mills the material, and the powder after smashing falls to the dispersion impeller from the clearance to by getting rid of outside, the toper cover has ensured the high-efficient milling of material with outside guide cover's cooperation, has strengthened crushing effect, has promoted milling efficiency.

Inventors

  • CHENG JUNGANG
  • CHEN WEIJIAN
  • LIU GUOFANG
  • YU QIFENG
  • FANG KAI

Assignees

  • 宁波招宝磁业股份有限公司
  • 宁波金坦磁业有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (7)

  1. 1. The neodymium iron boron airflow mill comprises a lower shell (1) and an upper shell (2) and is characterized in that the upper shell (2) is fixedly arranged at the top of the lower shell (1), an upper fixing frame (3) and a lower supporting frame (4) are respectively and fixedly arranged at the upper side and the lower side in the lower shell (1), a milling assembly (6) is fixedly arranged between the upper fixing frame (3) and the lower supporting frame (4), an air inlet pipe (5) is fixedly arranged at the lower side in the lower shell (1), a vibrating assembly (7) is fixedly arranged at the bottom of the lower shell (1), and a return assembly (8) is fixedly arranged at the outer side of the lower shell (1); The grinding assembly (6) comprises an outer guide cover (61) fixedly mounted at the top of a lower support frame (4), a first rotating shaft (62) is rotatably mounted in the lower support frame (4), a conical sleeve (63) positioned on the inner side of the outer guide cover (61) is fixedly mounted on the outer side of the first rotating shaft (62), a groove (64) is formed in the outer side of the conical sleeve (63), a grinding roller (65) is movably mounted in the groove (64), a first driving motor (66) in transmission connection with the first rotating shaft (62) is fixedly mounted in the upper fixing frame (3), and a dispersing disc (67) positioned below the lower support frame (4) is fixedly mounted at the bottom of the first rotating shaft (62).
  2. 2. The neodymium iron boron air flow mill according to claim 1, wherein the outer guide cover (61) and the conical sleeve (63) are arranged on the same axis, and the first rotating shaft (62) is arranged in a conical shape.
  3. 3. A NdFeB air flow mill according to claim 1, wherein the grinding rollers (65) are equally spaced apart in a ring shape and are arranged outside the conical sleeve (63).
  4. 4. A neodymium iron boron air flow mill according to claim 3, wherein the dispersion plate (67) is arranged in a conical shape, and the dispersion plate (67) is fixedly connected to the bottom of the first rotating shaft (62) through bolts.
  5. 5. The neodymium iron boron air current mill of claim 1, wherein the feed back subassembly (8) is including guide cylinder (81), guide cylinder (81) fixed mounting is in the outside of lower casing (1), the bottom of lower casing (1) is the slope setting to guide cylinder (81) one side, lower casing (1) is linked together with the inboard below of guide cylinder (81), the bottom fixed mounting of guide cylinder (81) has driving motor three (82), the inside movable mounting of guide cylinder (81) has feeding auger (83) that are connected with driving motor three (82), the inboard top fixed intercommunication of guide cylinder (81) has feed back pipe (84), feed back pipe (84) are located the top of outer guide cover (61).
  6. 6. The neodymium iron boron airflow mill according to claim 1, wherein the vibrating assembly (7) comprises an ear plate (71) fixedly installed at the bottom of the lower shell (1), a second rotating shaft (72) is movably installed on the inner side of the ear plate (71), a second driving motor (73) connected with the second rotating shaft (72) is fixedly installed on the outer portion of the ear plate (71), an outer sleeve (74) is fixedly installed on the outer portion of the second rotating shaft (72), a striking block (75) is movably installed on the outer portion of the outer sleeve (74), and the striking block (75) is connected with the outer sleeve (74) through a rope.
  7. 7. A neodymium iron boron air flow mill according to claim 5, wherein the top of the upper shell (2) is fixedly provided with a rotor driving device (9), and the top of the upper shell (2) is fixedly provided with a rotor (10) connected with the rotor driving device (9).

Description

Neodymium iron boron air current mill Technical Field The utility model relates to the technical field of permanent magnet preparation, in particular to a neodymium iron boron air flow mill. Background The neodymium magnet is also called as neodymium iron boron magnet, is tetragonal crystal formed by neodymium, iron and boron, is a permanent magnet with magnetism inferior to absolute zero degree holmium magnet nowadays, is also the most commonly used rare earth magnet, and is easy to process into magnets with various shapes and specifications because of the excellent characteristics of high remanence, high coercivity and high magnetic energy product, so that the neodymium magnet is widely used for devices and equipment of permanent magnetic fields such as electroacoustic telecommunication, motors, meters, nuclear magnetic resonance, magnetic suspension, magnetic sealing and the like, and is particularly suitable for manufacturing various products with high performance and complex shape, and the production process flow of the neodymium iron boron permanent magnet comprises the steps of batching, ingot casting, hydrogen explosion, grinding, anaerobic forming, sintering and the like, so that a magnetic material with certain magnetic performance is obtained; The prior patent publication No. CN108855420A discloses a grinding process of an air flow mill and a neodymium iron boron permanent magnet, by rotating a grinding disc, magnet particles move from the center to the edge of the grinding disc due to the action of centrifugal force, a grinding roller is contacted with the grinding disc, and along with the rotation of the grinding disc, the grinding roller also rotates around the axis of the grinding roller, and after the magnet particles pass through a rolling area on the grinding disc, which is contacted with the grinding roller, the magnet particles are rolled by the grinding roller; In the above-mentioned patent, because the grinding roller only sets up in grinding disc top both sides, and the grinding disc is great again, and the magnetic particle that is thrown away by the grinding disc centrifugal force is more, leads to the grinding roller to grind less magnetic particle, and then leads to the coarse powder to need send back many times to grind, and grinding efficiency is not good, and the coarse powder falls into simultaneously and connects in the hopper to adhere to in connecing the hopper easily, can't guarantee to collect fast and send back. Disclosure of utility model The utility model aims to provide a neodymium iron boron air flow mill, which solves the problems that in the prior art, the grinding rollers are only arranged on two sides above a grinding disc, the grinding disc is larger, and the magnetic particles thrown out by the centrifugal force of the grinding disc are more, so that the number of the magnetic particles ground by the grinding rollers is less, coarse powder is required to be sent back for grinding for a plurality of times, the grinding efficiency is poor, and meanwhile, the coarse powder falls into a receiving hopper and is easy to be attached to the receiving hopper, and the rapid collection and the return cannot be ensured. In order to achieve the aim, the utility model provides the technical scheme that the neodymium iron boron airflow mill comprises a lower shell and an upper shell, wherein the upper shell is fixedly arranged at the top of the lower shell, an upper fixing frame and a lower supporting frame are respectively fixedly arranged at the upper side and the lower side in the lower shell, a milling assembly is fixedly arranged between the upper fixing frame and the lower supporting frame, an air inlet pipe is fixedly arranged at the lower side in the lower shell, a vibrating assembly is fixedly arranged at the bottom of the lower shell, and a feed back assembly is fixedly arranged at the outer side of the lower shell; The grinding assembly comprises an outer guide cover fixedly mounted at the top of a lower support frame, a first rotating shaft is rotatably mounted in the lower support frame, a conical sleeve positioned on the inner side of the outer guide cover is fixedly mounted on the outer side of the first rotating shaft, a groove is formed in the outer side of the conical sleeve, a grinding roller is movably mounted in the groove, a first driving motor in transmission connection with the first rotating shaft is fixedly mounted in the upper fixing frame, and a dispersing disc positioned below the lower support frame is fixedly mounted at the bottom of the first rotating shaft. Preferably, the outer guide cover and the conical sleeve are arranged on the same axis, and the first rotating shaft is arranged in a conical shape. Preferably, the grinding rollers are arranged outside the conical sleeve at equal intervals in an annular shape. Preferably, the dispersion disc is conical, and the dispersion disc is fixedly connected to the bottom of the rotating shaft throug