SU1189386A1 - Apparatus for separating grain mixtures - Google Patents

Abstract

A DEVICE FOR SEPARATION OF CEREAL MIXTURES, containing a hopper with feed roller, channels of the first and second aspiration, communicating with a settling chamber, reshatny mill with three rushes, and pallets located under the outlet parts of the resheat, characterized in that, in order to increase the quality of separation the mixture into fractions, the middle-weight tray is made adjustable in length and provided with a tray and conveyor connecting the tray to the hopper.

Description

The invention relates to agricultural machinery, in particular, devices for separating grain mixtures into fractions, and can be applied in the food industry and in agriculture for the primary cleaning of seeds of grain crops.

The purpose of the invention is to improve the quality of separation of the blend fraction.

FIG. 1 is the proposed device, the general view; in fig. 2 - the same, the scheme of work; in fig. 3 - adjustable middle russia sieve pan.

A device for separating grain mixtures consists of a wind-sieve grain cleaning machine 1, including a hopper 2 with a feed roller 3, a first aspiration channel 4, a settling chamber 5 with a fan 6, a second aspiration channel 7, two mill mills 8 and 9 with three meters sieves, sieves 10-15, short pallet 16, middle-length pallet, adjustable in length, consisting of fixed 17 and movable 18 parts, long pallet 19, having in the middle part an inclined transverse tray 20 for the withdrawal of small trash fraction, as well as a feeder devices 21, with united with its output end 22 with the hopper 2, and with the receiving part 23 by means of the conveyor 24 and the inclined transverse tray 25 with the output end of the fixed part of the adjustable pallet 17 (Fig. 3), trays 26-28.

FIG. 2 shows the fractions into which the initial grain material 29 is divided, fed to the receiving part 23 for loading the device, is divided into fractions {Fig. 2): light fraction 30; a fraction of 31 large and partially light impurities; fractions 32 and 33 grains, coming from the descent from sieves 12, 13 and 14, 15; fractions 34 and 35 of the grain going through the passage, respectively, under sieve 15 and 14; fraction 36, coming with a descent from the movable 18 and the fixed 17 parts of the middle tusk regulated along the length of the pallet.

The working dimensions, the shape of the openings of sieves 10 and 11, and the length of these sieves are determined from the condition of permissible losses of grain of the main crop with large impurities. When separating a grain material that is clogged with long impurities, the sieve 10 has round-shaped holes, and the sieve 11 is oblong. Sieve 12 and 13 have round-shaped holes, the sizes of which are chosen in such a way that the run-off fraction 32 has a permissible number of short and fine impurities, and the passages (up to adjustable pallet 17 and 18) have an allowable number of long ones. The working dimensions of the sieve holes 10 are larger than the working sizes of the sieve holes 13, and the latter are larger than the working size

sieve holes 12. The working sizes of sieve holes are 10 12, and 13 are larger than seed size in width.

The working sizes and the shape of the openings of sieves 14 and 15 are chosen from the condition of passage through the first — the small weed fraction 35, and through the second — the fractions of small and frail seeds.

A device for separating grain mixtures works as follows.

0 The initial grain mixture 29 enters the receiving part 23 of the feeder of the device 21 and is fed by its output part 22 to the hopper 2 of the wind-sieve grain cleaning machine 1. Evenly

When distributed along the width of the chamber, the roller feeds the 3 grain mixture into the channel 4 of the first aspiration, where, blown by the air flow, carrying light impurities 30, it falls on the sieve 10 of the sieve mill 8.

 A full load of sieve 10 and the presence of a segregation effect for the main mass of impurities (oats, oats, straws, weed heads, small and light weed seeds, etc., allow them to float up in the grain

5 layer, moving along its surface, slightly in contact with the working surface of the slat 10. This phenomenon, together with the correct choice of the shape and size of the holes, decides 10 and 11 reduces the likelihood of specified imprints to pass under them. Similar to sieves 10 and 11 and the tray 26 is a fraction of large impurities and losses of the main grain 31.

Having passed under the sieve 10 and part of the crate 11, the fraction again passes the separation on crests 12 and 13, from which

there is a grain with long impurities 32, which is blown by the air flow in the channel 7 of the second aspiration, and the pass goes fraction 33 with small and short impurities. Fractions going on pallet 16

combines with fraction 32. Fraction 36, which is formed by the passage under part of the sieve 13, is fed through the adjustable short pan and the transverse inclined tray 25 by means of the conveyor 24 to the receiving part 23 of the feeder of the device 21.

 Depending on the relative amount of oats (oats) admixture in the initial grain mixture 29, the movable part 18 of the adjustable pallet must be moved (Fig. 3) while simultaneously changing the research institute of the feed to the receiving part 23 of the feeder of the device 21 of the wind-siding machine 1. For example, with increased content oats (oats) in the grain mixture 29, the movable part 18 of the adjustable pallet must be moved up (Fig. 3)

5 and at the same time reduce the supply of the initial grain mixture 29. With a small relative content of oats (oats) in the batch of grain mixture, the movable part 18

The adjustable pallet must be moved down (Fig. 3) and the feed of the original grain mixture 29 should be increased. The feed must be adjusted so that the grain mass fed to the sieve 10 is constant at all rational positions of the movable part 18 of the adjustable pallet.

From the sieves 12 and 13 there is a fraction of 32 grains and the predominant content

long impurities and permissible content of small and short. The passage fractions of sieve 12 and partially sieve 13 are separated on sieves 14 and 15, from which fraction 33 goes with tray 33 with the predominant content of short and fine impurities and the allowable content of long, and the weed fraction 35 respectively passes with passage. and a fraction of 34 small and puny seeds.

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Claims (1)

DEVICE FOR SEPARATION OF GRAIN MIXTURES, containing a loading hopper with a feed roller, channels of the first and second aspiration communicating with a settling chamber, a sieve mill with three tiers of sieves and pallets located under the output parts of the sieves, characterized in that, in order to improve the quality of separation of the mixture on fractions, the middle tier pallet is made adjustable in length and is equipped with a tray and a conveyor connecting the tray to the loading hopper. No. ► (s s s s FIG. 7