SU212655A1 - DEVICE FOR PRIMARY TREATMENT OF PORK GRAIN - Google Patents

Description

Devices are known in which the heap to be treated is fed to one sieve with large openings installed one above the other in a cleaning chamber, the space between the sieves being blown by a directional FLOW created by the fan.

The present invention makes it possible to improve the quality of the processing of the heap, for which the sieve in the cleaning chamber is shifted relative to each other and make a reciprocating movement with the camera. The sieve is made in the form of alternating cantilever fingers of different lengths. The fingers of the sieves are equipped with comb protrusions, which prevent a mass shift in the opposite direction of the heap to the sieve and improve the transport capacity of the sieves.

The above arrangement of the sieves makes it possible to thin the treated heap better, which improves its qualitative separation.

FIG. I shows a diagram of the proposed device; in fig. 2 - sieve structures; in fig. 3 - sieve finger; in fig. 4 - comb projections with which fingers are provided.

The device consists of a cleaning chamber 1, a screw auger 2, a grain auger 3 and a fan 4. In the cleaning chamber several sieves 5 are installed below each other with a grill that are assembled from fingers 6, 30-40 cm long, and fingers 7 50-60 cm long Fixed in the laths 8. The installation of fingers of different lengths in one sieve allows to achieve an increase in the living section by the end of the sieve. The lower sieve is terminated by an extension 9. The cleaning chamber is suspended on suspensions 10 vi 11 vi is set in motion by means of the oscillator 12 and connecting rods 13.

The fan is equipped with an air duct 14 with guides; it is 15. To align the air flow and prevent grain from entering the fan, the exit window of the duct 14 is covered with a wire mesh 16. On

fingers sieves strengthened comb protrusions 17.

The device works in the following way. A grain heap is fed to the upper sieve of the cleaning chamber, which makes

together with the camera reciprocating motion. In this case, the heap is transported over the surface of the sieve and the grain, which is above the lower layers, spills into the gaps between the fingers. A passage through the end of the first sieve passes through the second sieve, while large impurities are transported further and partially blown out by the air flow.

The exit from the first sieve is produced in the difference between the first and second sieves. In this case, part of the light impurities is removed, and the remainder of the mixture enters the second sieve. On the second and subsequent, their sieves, a further grain separation occurs.

The air flow is distributed along the height of the stitches in such a way as to blow out all the sieves, which, thanks to the cantilever fingers, are practically unforgettable. The number and length of the sieves is determined depending on the device performance and the contamination of the pile.

Subject invention

1. A device for the primary processing of a heap of grain, including its cleaning chamber with sieves installed one above the other, the space between which is blown by the air flow created by the fan, characterized in that, in order to improve the quality of the processing of the heap, the sieve in the cleaning camera are mixed relative to each other and make reciprocating movement with the camera.

2. The device according to p. , characterized in that the sieves are made in the form of alternating, their console fingers of various lengths.

3. The device according to paragraphs. 1, 2, characterized in that the sieve fingers are provided with comb-shaped protrusions.

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