SU1375181A1 - Arrangement for separating seeds by length - Google Patents

Abstract

The invention relates to the separation of bulk mixtures in size and electrical properties and can be used in agricultural production and in the mineral processing industry for separation. The invention makes it possible to increase the separation efficiency of seeds: length by orienting the long components of the mixture in a sieve plane perpendicular to the larger axis of the holes. The device includes a sieve 1 with oblong holes, making it oscillate in a horizontal plane. Insulated electrodes 3 of alternating polarity are installed on the sieve. Electrodes 3 are installed parallel to the direction of descent of the seeds, symmetrically relative to the major axes for a long time. cotton holes at a distance from one another not less than the length of the seeds being divided. When moving along a sieve of long seeds, they orient perpendicularly oblong openings and come off the sieve, and short ones are sifted. 2 Il. (L

Description

I

/

  about Johnoshir

about

° o

AO with

EiinziEiDa with

ra

W SH W CZI dl with

p1

J

bolt

AO with

nziEiDa with

oo sd

oo

11 g

0n, 0

Fi & .1

The invention relates to the separation of bulk mixtures by size and electrical properties and can be used in agricultural production and in the mineral processing industry for the separation of bulk mixtures by length.

The aim of the invention is to increase the separation efficiency of seeds in length by orienting long mixture components in the sieve plane perpendicular to the larger axis of the holes.

FIG. 1 shows the proposed device, obsh, i view; in fig. 2 shows section A-A in FIG. one.

A device for dividing seeds in length includes a sieve 1 with oblong holes 2 oscillating in a horizontal plane. Insulated electrodes 3 of alternating polarity are installed on the sieve. The electrodes 3 are installed parallel to the direction of descent of the seeds symmetrically with respect to the major axes of the holes 2 at a distance from one another, not less than the length of the seeds being divided.

Insulated wire such as AR may be used as the material for the manufacture of electrodes 3. The cross section of the wire and the distance between the electrodes is established taking into account the size of the seeds to be divided.

The power of the electrodes 3 is dried, alternating current from a high voltage source. As such sources, transformers with an output voltage in the range of 50 kV can be used.

An electric field frequency of about 50 Hz ensures that the long components of the mixture are clearly oriented. In addition, the pulsation of the electric field contributes to the stabilization of the oriented position of the seeds and also eliminates the sticking of individual seeds to one of the electrodes, which occurs when the electric field is applied.

The device works as follows.

A mixture of elongated and rounded seeds from a feeding device (not shown) is uniformly fed to the beginning of the sieve 1, made without holes (zone I). In this zone, the elongated components of the mixture are orienti

five

0

The electric field is driven by a torque in the sieve plane perpendicular to the electrodes 3. Then, under the action of horizontally directed oscillations of the sieve 1, installed at an angle to the horizon, the oriented elongated components of the mixture and the rounded seeds move into the working part of the sieve 1. In this case, the elongated seeds have a position perpendicular to the major axis of the hole 2. Such an orientation of the elongated seeds prevents their passage through the sieve holes. Later in the process of their movement to the entrance (in the direction of the descent of the seeds) the electric field reliably holds them in the oriented position. The rounded components of the mixture are not oriented by the field and, falling on the sieve, fall through the holes and enter a separate receiver of the separation products.

Thus, such a selective effect of the electric field on the elongated and rounded components of the mixture improves the efficiency of separation of seeds along the length of the sieves.

In addition, the installation of electrodes 3 parallel to the direction of descent of seeds reduces the undesirable random effect of neighboring seeds on each other and ensures an even distribution of the material being divided across the width of the slit, which also contributes to an increase in the efficiency of seed separation.

Claims (1)

Invention Formula A device for separating seeds in length, including horizontally oscillating sieve with oblong holes, isolated electrodes of different polarity, feeder and receivers of separation products, characterized in that, in order to increase the efficiency of separation of seeds by orienting long components of the mixture in the sieve plane, perpendicular to the larger axis of the holes, the electrodes are mounted on the sieve with alternating polarity, symmetrically with respect to the large axes of the oblong holes. 0