Magnetic dust-cleaning equipment

Abstract

A magnetic dust remover is characterized in that the dust remover comprises at least two sets of dust-collecting devices, and each set of the dust-collecting device is composed of a housing, a group of magnetic force sticks of a permanent magnet, a driving device for the magnetic force sticks, an electric control system, and a sound wave vibrator and / or an air hammer, wherein the housing is provided with a group of cylinders spanning the inner cavity of the housing between a to-be-treated air inlet and a treated air outlet, and both two ends of each cylinder are hermetically bonded with the side wall of a work room; each magnetic force stick is corresponding to each cylinder; the driving device for the magnetic force sticks drives the magnetic force sticks of the permanent magnet to insert into or remove out of magnetic force stick isolation sleeves; the electric control system opens a set of the dust-collecting device and closes the other dust-collecting device simultaneously; and the sound wave vibrator and / or the air hammer acts on the housings of the dust-collecting devices in a dust-removing state. By using the magnetic dust remover, the service life of filter materials is prolonged, the automatic collection is realized through on-line work of the dust-collecting devices, and the separate collection of ultra fines can be realized.

Description

technical field [0001] The invention relates to a magnetic dust collector, which is used in the crushing process of sintered NdFeB. It is connected to the airflow crushing equipment before the filter equipment for gas pretreatment, and uses the magnetic field to remove the magnetic dust in the airflow, thereby prolonging the filtration time of the filter equipment. service life of the material. Background technique [0002] In the crushing process of sintered NdFeB, there is a fluidized bed airflow crushing (referred to as jet mill) process, and the equipment used in it includes: compressor, air storage tank, air conditioner, fluidized bed grinding chamber, cyclone separator , filters, waste barrels, finished barrels, and control cabinets. Among them, a filter is used to remove the ultrafine powder in the airflow to prevent the powder from entering the compressor, and the filter uses a recoil device to blow back the ultrafine powder adsorbed on the filter material and colle...

AI Technical Summary

Problems solved by technology

[0003] However, since the filter materials in the filters currently used are all general-purpose filter materials, they cannot adapt to the environment where the dust content in the jet mill is extremely high, and the service life of the filter materials is very low; The pressure difference between the front and back of the filter becomes larger, which reduces the efficiency of the jet mill, and the filter material needs to be replaced frequently, which makes it difficult to eliminate the impact on the operation of the equipment.

Since the ultrafine powder of NdFeB material is extremely easy to spontaneously ignite, frequent replacement of filter materials is likely to cause safety accidents

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