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Automatic screening device for neodymium iron boron magnetic powder and automatic screening method thereof

An NdFeB automatic screening technology, which is applied in the field of NdFeB magnetic powder automatic screening device, screening device, and NdFeB magnetic powder automatic screening, can solve the problems of low screening efficiency and poor screening effect, and achieve Improve screening efficiency and screening quality, ensure screening effect, and ensure the effect of dispersion quality

Active Publication Date: 2020-01-03
安徽万磁电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of poor screening effect and low screening efficiency of existing NdFeB magnetic powder screening devices, the present invention provides an automatic screening device for NdFeB magnetic powder and its automatic screening method

Method used

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  • Automatic screening device for neodymium iron boron magnetic powder and automatic screening method thereof
  • Automatic screening device for neodymium iron boron magnetic powder and automatic screening method thereof
  • Automatic screening device for neodymium iron boron magnetic powder and automatic screening method thereof

Examples

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Effect test

Embodiment 1

[0056] see Figure 1-5 , This embodiment provides an automatic screening device for NdFeB magnetic powder, which is capable of screening externally fed NdFeB magnetic powder to screen out magnetic powders with different particle sizes and non-magnetic impurities. Wherein, the NdFeB magnetic powder automatic screening device includes a screening barrel 1, a dispersing mechanism, an offset mechanism, a collecting mechanism, a detecting mechanism and a controller.

[0057] The screening barrel 1 can adopt a round barrel or a square barrel, and can also adopt barrels of other shapes. In this embodiment, in order to prevent the NdFeB magnetic powder from being adsorbed on the inner wall of the screening bucket 1, the screening bucket 1 is made of non-metallic materials, such as plastic and wood materials. Screening barrel 1 is used as the place for screening NdFeB magnetic powder in this embodiment, and its size can be set according to the screening amount of NdFeB magnetic powder...

Embodiment 2

[0070] This implementation provides an automatic screening device for NdFeB magnetic powder, which is similar to the device in Embodiment 1, the only difference is that the magnet 5 in this embodiment is an electromagnet, and the functions of the controller are increased. The controller is also used to adjust the magnetic force of each magnet 5 according to the particle size range of the NdFeB magnetic powder, by querying the data correspondence in a preset particle size-magnetic force comparison table. Among them, there is a one-to-one data correspondence between the particle size range and the magnetic force in the particle size-magnetic force comparison table. In this way, in practical applications, the controller can obtain the magnetic force required by each magnet 5 by querying the particle size range of the NdFeB magnetic powder, so as to adjust each magnet 5, so that the NdFeB magnetic powder will be adjusted according to the magnetic force. Offset, so that the magneti...

Embodiment 3

[0072] see Figure 6 , this embodiment provides an automatic sieving device for NdFeB magnetic powder, on the basis of Embodiment 1, a part of the structure belonging to the offset mechanism is added. Wherein, the offset mechanism also includes a plurality of air nozzles 11 and a plurality of electronic air valves 12 . A plurality of air nozzles 11 correspond to a plurality of magnets 5 respectively, and each air nozzle 11 blows air toward the corresponding magnet 5 to increase the deflection of the NdFeB magnetic powder in the corresponding particle size range. The plurality of electronic air valves 12 correspond to the plurality of air nozzles 11 respectively, and each electronic air valve 12 is installed on the corresponding air nozzle 11 and is used to adjust the intake air volume of the corresponding air nozzle 11 . Among them, the controller is also used to query the data correspondence in a preset particle size-intake amount comparison table according to the particle s...

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Abstract

The invention discloses an automatic screening device for neodymium iron boron magnetic powder and an automatic screening method thereof. The automatic screening device comprises a screening barrel, adispersing mechanism, a deviating mechanism, a collecting mechanism, a detecting mechanism and a controller. The dispersing mechanism comprises a feeding pipe, a rotating cylinder, a cutting assemblyand a driving assembly. The deviating mechanism comprises a protection plate and a plurality of magnets. The collecting mechanism comprises a first collecting barrel, a first telescopic assembly, a plurality of second collecting barrels and a plurality of second telescopic assemblies. The detecting mechanism is used for detecting the collecting amount of the neodymium iron boron magnetic powder in the first collecting barrel and the second collecting barrels. The controller is used for adjusting the rotating speed of the rotating cylinder through the driving assembly according to the specificgravity of blocky powder balls in the neodymium iron boron magnetic powder per unit volume and a data corresponding relation in a preset specific gravity-rotating speed comparison table. The screening efficiency of the neodymium iron boron magnetic powder is improved. The caked neodymium iron boron magnetic powder can be cut up, so that the screening effect is improved, and the screening qualityand purity of the neodymium iron boron magnetic powder are guaranteed.

Description

technical field [0001] The invention relates to a screening device in the technical field of screening, in particular to an automatic screening device for NdFeB magnetic powder, and also relates to an automatic screening method for NdFeB magnetic powder of the device. Background technique [0002] NdFeB magnets are tetragonal crystals formed of neodymium, iron and boron. This kind of magnet is the second most magnetic permanent magnet after the absolute zero holmium magnet, and it is also the most commonly used rare earth magnet. NdFeB magnets are widely used in electronic products, such as hard drives, mobile phones, earphones, and battery-powered tools. NdFeB is divided into sintered NdFeB and bonded NdFeB. Bonded NdFeB is magnetic in all directions and is corrosion-resistant; and sintered NdFeB is easy to corrode, and the surface needs to be coated. Generally, there are galvanized, Nickel, environment-friendly zinc, environment-friendly nickel, nickel-copper-nickel, env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/26B03C1/005B02C18/08
CPCB03C1/26B03C1/005B02C18/08
Inventor 唐睿何进陈益民
Owner 安徽万磁电子股份有限公司
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