SU526388A1 - Magnetic Sample Separator - Google Patents

Description

one

The invention relates to devices for separating magnetic samples into fractions with different magnetic permeability.

A known instrument for divided samples, including nosotnye magnets with pole tips.

The disadvantage of such a device is the impossibility of smoothly changing the induction in the interpolar gap at its small values and achieving a zero value of the induction.

The proposed device for separating magnetic samples differs from the known one in that the pole pieces are fixed in one cylindrical yoke and the magnets in another, with one yoke mounted on the other.

This difference allows for a smooth adjustment of the magnitude of the induction in the interpolar gap.

Pa drawing depicts the target device.

It contains two fixed 1 cylindrical shapes. Magnets magnets; are aligned along the cylindrical axis and are connected by planes so that they form a cylinder. Moreover, their gender is directed oppositely. On the one hand, the poles of the magnets are closed by the magnetic conductor 2 and are fixed in the cage 3. Two pole 1, tip 4, and also memetsi

the shape of semi-cylinders, strengthened in the cage 5 alike. that their axial sectional planes form a gap. The size of the gap is fixed by the bar 6. The pole tips are held by the magnet by magnetic forces. made of non-magnetic material. On one holder there is a scale of angles of rotation, on the other - an index.

When the sleeves are rotated relative to each other by an angle, the magnetic induction in the gap can vary from zero to a maximum value.

If the gap is parallel to the plane of magnet coupling, the magnitude of the induction is maximum. In this case, the magnetic flux passes through both the magnet, the magnetic core, the pole pieces and the gap.

If the gap is perpendicular to the plane of the magnet connection, the induction is zero.

In this case, the magnetic flux passes through both magnets, a magnet diode and both poles of the tip, each of which closes the opposite ends of the magnets, the shunt of a magnetic note. There is no magnetic note in the gap.

When working, the device with the prescribed required value of induction

The gap is reduced to a layer of crushed magnetic sample, consisting of fractions that are to be separated, differing in magnetic susceptibility. The gap is filled with a fraction with an appropriate susceptibility. The selected fraction is separated while decreasing the induction by turning the clips to zero.

This design allows the device to be made in a pocket design.

4 Form u l a and 3 o b e te n u

A device for separating magnetic samples, including permanent magnets with pole pieces, characterized in that, in order to ensure a smooth adjustment of the magnitude of the injection in the interpolar gap, the pole pieces are fixed in one cylindrical yoke, and the magnets in the other, and one yoke is mounted on the other .