SU933116A1 - Electric discharge corona separator - Google Patents

Description

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The invention relates to grain cleaning machines and is intended for the separation of bulk materials, mainly seeds of agricultural crops in an electric field of corona discharge.

Known electronic separator, including a vertically arranged discharge and collecting electrodes p ..

A disadvantage of the known device is the low efficiency of the separation process.

A known electro-corona separator comprising a feeder, vertically mounted electrodes of opposite polarity, a dielectric barrier vertically mounted between the electrodes, and receivers of separation products 2.

The disadvantage of such a device is low productivity.

The purpose of the invention is to improve the performance of the separator by

creating a bipolar corona in the working area of the separator.

This goal is achieved by the fact that the dielectric barrier is solid and is installed in the middle between the electrodes, with all the electrodes made needle-shaped.

Figure 1 shows the proposed corona separator, a General view; in fig. 2 - ay

“About figure 1.

The electric corona separator contains a vertical camera with a feeder 2 and receivers 3 separation products. Tires with needle electrodes 5 are mounted on the sides of the chamber 1. Both electrodes 5 are xronating. Between the tires k with electrodes 5 a dielectric barrier 6 is installed, dividing chamber 1 into two parts. Receivers 3 are provided with holes 7 to remove fractions of the mixture being separated from chamber 1. Corona electrodes

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5 can be made in the form of a flat system of wires.

The separator works as follows.

The high voltage applied to the electrodes 5 causes a bipolar corona discharge. The positive and negative ions that appear during corona move towards each other by scattering beams, which, overlapping each other, form a close to uniform electric field.

The ions moving to the dielectric barrier 6 in each part of chamber 1, charge all the particles of the separated mixture coming from the feeder 2. The latter, under the influence of the charge received, and the electric field also begin to move to the dielectric barrier 6. the field of corona discharge is determined by the impact on the particles of electrical forces and the force of gravity. The particle will fall down under the action of the force of gravity and at the same time be displaced to the dielectric barrier 6 under the action of electric force. Depending on the properties, the particles will fall at different distances from the barrier 6, which will ensure their ptec separation across the cells of the receivers 3.

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The use of the proposed design of corona separator will allow to increase its performance.

Claims (2)

1. Basov A.M. and others. Electric grain cleaning machines. M., Mechanical Engineering, 1968, p. 12-13. 2. USSR Author's Certificate No. З371 | 9, cl. At 03 C 3/02, 1965 (prototype).