SU1384267A1 - Grain cleaning unit for first cleaning of grain - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery. The purpose of the invention is to increase the productivity and quality of grain cleaning. The grain cleaning unit contains a sectional dummy box in which a cascade of sieves with sieves 9, 10 and II is installed. The cascade of sieves is installed with the possibility of oscillation and at an angle to the horizontal plane. The top of the angle is directed toward the outlet pipe of the injection fan 3. The initial grain material comes from the feeder bin 2 on the pitched board 17 to the sieve mill 9. When the grain material moves along the pitched board 17, air is released by a stream of impurities that are output through the exhaust umbrella 18 to the cyclone 19. When the grain material moves in a cascade of sieves, the size of which increases, the particles are distributed in size and density. In section 6 feed waste comes in, in section 5 - grain with impurities, in section 4 - pure grain. Clean grain is fed to the clean grain bunker 28. The grain mixture from section 5 is fed to the cleaning machine 23 and the trowel block 25. The fodder waste from section 6 is transported to the fodder waste bunker 27. 2 cpf-ly, 1 ill. (/ WITH

Description

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FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular, to grain cleaning units, can be applied in the food industry and in agriculture for the primary cleaning of grain crops.

The purpose of the invention is to increase the productivity and quality of grain cleaning.

The drawing shows a flowchart of the unit for the primary cleaning of grain.

The grain cleaning unit consists of a car lifter 1, a hopper feeder 2, an injection fan 3, a damnable we, consisting of three sections 4, 5, 6, on vertical partitions of which are installed adjustable tilted shield 7, longitudinal air duct, bounded laterally by shields 8, on top of a cascade of sieves having sieve mills 9, 10 and 11 with adjustable inclination angles, the box of each of which, from the side of its loading part, is connected to the frame of the longitudinal air channel by means of spring bases The tree 12 and the camshaft are nature 13, and from the side of its unloading part are connected to the frame by means of a hinge 14. A restrictive sealing surface 15 is installed with the receiving funnel 16 connected to the cattle board 17 with the feeder hopper 2, the surface of the cattle board inside air channel is made perforated. The exhaust umbrella 18 connected to the cyclone 19 is installed on the rear wall of section 6, and a receiver of large light and large heavy impurities 20 is located above the discharge pipe of the fan outside the air channel zone.

The unit also consists of a two-stream noria 21 clean and partially refined grain, a noria 22 feed waste wind-grating machine 23, a transfer conveyor 24, a trie block 25, reserve bunkers 26, feed waste 27, and pure grain 28.

Reshetnye mills are shifted vertically in such a way that longitudinal channels are formed between them, blown by the air flow.

Grain cleaning unit for the primary cleaning of grain works as follows.

The initial grain material from the bunker-feeder 2 in an amount 1.4–1.6 times greater than the throughput capacity of the unit's machines, goes along the tilting board 17 to the beginning of the sieve mill 9. When the grain mixture moves on the perforated surface of the tilting board 17 and of the free fall to the surface of the sieve 9, the air flow releases a portion of the light and dust-like impurities of organic and mineral matter

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walking, which through exhaust umbrella 18 are output to cyclone 19.

Under the action of the oscillatory movement of the sieve mill 9 in a vertical plane along the arc of a circle relative to the hinge 14, there is an intensive redistribution of particles according to their size and density throughout the layer, sieving of small particles B of the aperture, while light particles of impurities are retracted into the cyclone through the exhaust umbrella The heavy section 6 enters. The dimensions of the slit holes are determined from the condition of screening the particles of weed and grain impurities.

The grain mixture from the mill 9 is supplied to the sieve mill 10, the sizes of the openings of which are chosen from the condition of sifting 40-50% of the incoming.

Particles that have passed into the holes of the sieve 10 enter the air flow, under the action of which, depending on the size and density, they move along different trajectories. Light particles of impurities and the main culture enter section 6, particles of the main culture and part of small heavy impurities (puny and crushed seeds of the main crop, etc.) - in section 5 of the weed.

The grain mixture from the sieve mill 10 is poured at the beginning of the sieve mill 11, the hole sizes of which are determined from the condition of complete sieving of the main crop particles, and by removing sieve 11 to the receiver 20 large light and large heavy impurities are removed (fragments of straw, spikelets, large seeds) weeds, lumps of soil, etc.). By selecting the size of the openings of sieves 10 and 11, the required performance is established by changing their angle of inclination to the horizon.

Under the action of a tilted air flow, the particles are distributed in fractions. The heavy grain of the main crop that has been made enters section 4, the easier fraction of the grain goes to section 5 of the weed.

The clean grain from sections 4 of the double-flow elevator 21 is fed to the clean grain bunker 28, the grain mixture from section 5 with an insignificant content of impurities is cleaned on the wind-grating machine 23, then in the trimer block 25.

The feed waste from sections 6 of the weed and the receiver of large impurities 20 Noria 22 are transported to the feed waste bin 27.

Entering the grain mixture particles into the inclined air flow through the varying sieve apertures makes it possible to isolate a significant part of the small light and small heavy particles directly above the receiver of the forage waste, increase the distance between the particles in the inclined air flow, i.e., significantly reduce

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particle collision probability, that provided block, feed hopper

It provides a high quality of separation of the air and purified grain, characterized in that

In order to increase productivity and the cascade arrangement of sieves of grain cleaning, the cascade of sieves installed with grain in the layer of the grain mixture and releasing oscillations and at an angle to the humid impurities at the moment of transfer are mixed with the intensive redistribution of - the horizontal plane, the top of which is nasi on the subsequent sieve, is neccesiblely directed towards the branch pipe; the supercharger of the movement of particles of the grain mixing fan and located between

through sieves and removal of large light and croup-bunker-feeder and fan, patrol heavy particles from the zone of the air 0 whose side adjoins the last section

we canal channel, while the working size

hole sieves as you approach

Claims (3)

The claims of the fan nozzle are enlarged. 2. An assembly according to claim 1, characterized in that 1. Grain cleaning unit for the power supply- 5 bunker-feeder is installed under primary cleaning of grain, containing a receiving hopper, a slop surface installed along the process line that is made perforated, car lift, bunker feeder, sec 3. The assembly according to claim 1, characterized in that A regulated receiver with large, easy-angle tilt shields, suction hoods and heavy impurities mounted above and blower fan, conveyor-20 by a blower pipe and grain and fodder devices associated with sieves and forage noria waste disposal, windshine cleaning, trimer waste.