SU80327A1 - Vibratory mill - Google Patents

Description

The vibration mills used are based on the principle of oscillation of an elastic system under the influence of a disturbing force, the vector of which rotates perpendicular to the axis of the mill.

The elasticity of the system in such vibratory mills is achieved by using leaf springs or coil springs. Mills of considerable productivity with a large weight of oscillating parts should be equipped with very powerful elastic elements. The manufacture of these elastic elements in the form of lamellar springs requires special profiles for the rolling of spring steel, made according to special technical conditions.

The coil springs are mainly used in vibrating screens, where a large amplitude of oscillations in one direction is required. The use of helical springs for mills is structurally difficult, as in vibratory mills the oscillations approach circular.

The vibration mill described is characterized in that horizontally arranged torsion springs are applied as an elastic suspension element, on which the mill body is supported by means of several pairwise and pivotally connected levers, from which the lower levers are rigidly fixed on the ends of the torsion springs and the upper levers are hingedly attached to the ends of the torsion springs, and the upper levers are hinged at the ends of the torsion springs, and the upper levers are hinged at the ends of the torsion springs, and the upper levers are hinged at the ends of the torsion springs and the upper levers are hinged on the torsion springs, and the upper levers are hinged on the ends of the torsion springs and the upper levers are hinged on the torsion springs, and the upper arms are hinged on the ends of the torsion springs and the upper levers are hinged on the torsion springs, and the upper levers are hinged on the ends of the torsion springs and the upper levers are hinged on the torsion springs, and the upper levers are fixed on the ends of the torsion springs and the upper levers are hinged on . This simplifies the design of the elastic suspension of the mill.

FIG. 1 shows schematically a vibratory mill, side view in FIG. 2 - the same view from the left end.

The electric motor / by means of the elastic shaft 2 drives the shaft 3 of the mill to rotate. Two unbalanced flywheels 4 are mounted on the shaft of the mill, as they are rotated, a centrifugal force is created, causing circular oscillations of the mill housing 5. The mill housing is a welded, gummed inside box.

No. 80327-2 -

pivotally supporting the pins on the four levers 6 connected with the fingers 7 to the rolling bearing housings c. The second ends of the arms through the fingers 9 are attached to the levers 10 rigidly fixed on the ends of the torsions 11.

The torsions, in the places where the lower arms are attached to them, rest on the rolling pods 12. The opposite ends of the torsions enter the housings 13 fixedly mounted on the frame.

When the shaft 3 rotates, the mill housing is under the influence of the centrifugal force created by the unbalanced flywheels. The movement of the mill body is hampered by the elasticity of the torsions, which in this case must be twisted in one direction or another. Due to this, the mill body receives circular oscillatory movements, these movements are communicated to bodies grinding material.

Supply and removal of material can be carried out by any of the known methods.

The essential advantages of the proposed elastic suspension are:

1) the ability to create vibratory mills of great productivity;

2) ease of implementation of an elastic system having oscillations approaching circular ones;

3) reliability of work;

4) ease of replacement in the event of possible damage and without significant costs;

5) less cost torsion compared with leaf spring suspensions.

Subject invention

A vibratory mill with an elastic suspension of the body, characterized in that horizontally positioned torsion springs are applied as an elastic suspension element, on which the mill body is supported by several pairwise and jointly connected levers, of which the lower levers are rigidly fixed on the ends of the torsion springs and the upper arms attached to the trunnions of the mills.

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