Method for detecting iron member using magnetosensitive element by constant magnetic deironing device

Abstract

The invention relates to a constant magnetic separator which can remove steel pieces included in materials from a conveying belt of scattering solid non-magnetic materials, and a method for detecting iron pieces by using the constant magnetic separator adopting a magneto sensor group. A plurality of magneto sensors are arranged between the magnetic poles of the constant magnet of the constant magnetic separator. The output of the magneto sensors is connected with a signal amplifying circuit which is connected with a comparison control circuit. After being operated by the comparison control circuit, the output is connected with a sheet iron removing belt running a power supply to control the sheet iron removing belt to rotate. The control relation of a plurality of detecting circuits formed by a plurality of magneto sensors is logic control, and the magneto sensors are hall sensors. The invention can automatically detect that whether any iron piece is sucked up by the magnet with simple setting and easy operation. The sheet iron removing belt is not needed to continuously run for a long time, and only when the iron piece is sucked up, the sheet iron removing belt runs. The electrical energy is saved, the mechanical wastage is little and the service life of the iron removing device can be prolonged.

Description

(1) Technical field [0001] The invention relates to a constant magnetic iron remover for automatically removing iron and steel parts contained in materials from a bulk solid non-magnetic material conveyor belt, in particular to a method in which the constant magnetic iron remover adopts a magnetic sensitive element group to detect iron parts, so as to protect the belt conveyor and the back road Process equipment is protected from damage, and can be used in metallurgy, coal, power generation, cement, papermaking, ports and other industries. (2) Background technology [0002] There are two types of technologies for automatically removing iron inclusions in non-magnetic materials with belt-type constant magnetic iron removers at home and abroad. The first is to install a belt-type constant magnetic iron remover 2, a control box 3, a scrap iron hopper 4 and other equipment on the material belt conveyor, see Figure 8 . When the belt conveyor 5 starts to run, it sends a start si...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned first prior art, as long as the material transport belt is running, regardless of whether there are iron parts in the material, the iron removal belt of the belt-type constant magnetic iron remover must always keep running. This constant magnetic iron removal technology consumes a lot of power and mechanical loss also big

The second type of prior art is limited by the sensitivity of the metal detection device, and some small iron pieces cannot be detected, which will easily cause a large amount of iron pieces to accumulate and cause the iron removal belt to be too loaded and cannot be removed by rotation.

Metal detection devices are susceptible to interference, causing many malfunctions and wasting power

In addition, the metal detection device is expensive, the device cost is high, the installation and debugging are difficult, and it cannot be applied to shorter and two-way running belt conveyors.

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