SU1611463A1 - Sieve boot for seed cleaner - Google Patents

Abstract

The invention relates to the cleaning and sorting of seeds and can be used in agriculture, in the mining, chemical industry and in construction. The purpose of the invention is to increase the efficiency of the emission of impurities of various lengths. The sieve mill consists of plane sieves (P) 1 arranged one above the other with transverse strips (PP) 2 and identical apertures. The flanges (B) 3 are installed in front of the PP 2 on the material loading side. The height B 3 increases in the direction from the loading end to the unloading end and from the upper P 1 to the lower end. The optimal height B 3 is 0.1 ... 0.4 of the diameter of the holes P 1. PP 2 is located with a gap relative to each other along the length P 1 and are displaced in each subsequent P 1 relative to PP 2 of the previous P 1. Before P 1 are installed interconnected by jumpers 5 transport disks 4, and under P 1 - receivers 6-8 fractions and dividers 9 fractions. At the same time, P 1 is installed with the possibility of reciprocating movement from the drive 10. The width of the previous PP 2 is greater than the width of the subsequent PP 2 in the direction from the loading end of P 1 to the discharge one. Part of the material particles, moving along the oscillating P 1, gets through the holes to the lower P 1, and some moves further and hits PP 2. Small particles are trapped in B 3 and sieved into receiver 6. Seeds are sifted in more remote areas of P 1 to the receivers 7. Large particles get into the receiver 8. 3 Il.

Description

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The invention relates to devices for cleaning and sorting seeds, can be used in agriculture, in the mining, chemical industry and in construction.

The purpose of the invention is to increase the efficiency of the process of separating impurities of various lengths.

FIG. 1 schematically shows a lattice mill, side view; figure 2 is a section aa in figure 1; Fig. 3 shows the likely placement of grains and impurities of the mixture on the sieve plane (node I in Fig. 1).

The sieve mill consists of sieves 1 with transverse strips 2. A flange 3 is installed in front of the strips 2 on the material loading side. The height h of the shoulders 3 increases in the direction from the loading end to the unloading side and from the upper sieve to the lower one. The gap I between the strips and the shoulders 3 is made decreasing in the direction from the loading end to the discharge end by reducing the width of the transverse strips. The bands in each subsequent sieve are shifted relative to the bands of the previous one.

In front of the sieves 1 there are transport boards 4, interconnected by jumpers 5, and under the sieves 1 there are receivers 6-8 fractions and dividers 9 fractions. The sieve 1 is mounted for reciprocating from the drive 10. Bunker-11 is installed above the sieves 1 for feeding the grain mixture. The sieve holes are the same size and the latter is chosen so that all particles of the grain material can pass into the holes.

The optimum height of the shoulders is 0.1-0.4 of the diameter of the screening sieves.

The separation of the mixture is as follows.

The initial grain material (a mixture of seeds, for example, wheat and impurities) enters from the hopper 11 to the upper resolution 1. Part of the particles of the grain material, moving along the inclined oscillating sieve 1, falls into the holes and passes to the lower sieve, and some moves further and it falls on a continuous strip 2. With this, small particles of impurities (seeding, parts of broken grain of wheat) in comparison with the others are more strongly retained by the shoulders 3 and sifted to the receiver 6. Wheat seeds are sifted to more distant sections of sieves, entering receivers 7. Larger particles (impurities) enter the receiver 8.

Claims (1)

Claims of the invention The sieve mill of the seed cleaning machine including flat sieves arranged one below the other, installed with the possibility of reciprocating movement in their own plane, made with the same holes and transverse strips spaced one relative to the other along the length of the sieve and displaced in each subsequent sieve relative to the previous bands, transport boards connected between the bridges, and fraction dividers, installed under the sieves, which is characterized by the fact that, in order to increase the efficiency of the selection process of different lengths of sizing, the sieve is molded with shoulders, installed in front of the strips on the material loading side, to the discharge and from the top to the bottom of the sieve, with this width of the previous the strip is larger than the width of the subsequent strip in the direction from the loading end of the sieve to the discharge one, and the height of the shoulder is made equal to 0.1-0.4 of the diameter of the sieve opening. . Fiv.z FIG. 2