SU1496700A1 - Chaffer fin - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery, namely, grain harvesting and grain cleaning machines. The purpose of the invention is to reduce grain losses. The louvre sieve consists of frame 1, louver 2 attached to the crankshaft m 3, adjusting bar 4 with grooves 5. When you move the adjusting bar 4, the crank axles 3 rotate together with the louver 2 attached to them 2. The opening angle of the louver 2 will decrease in the direction of movement mass, due to the condition: L * 98 L ₁ * 98 L ₂ * 98 L _N , where L is the interval between the first and second slots, L ₁ is the interval between the second and third slots, L ₂ is the interval between the third and fourth slots, L _N - the interval between the penultimate and last slots, and serial number of int vomited increases opposite to the direction of movement of the mass. 1 il.

Description

one

(21) 4263196 / 30-15

(22) 03/24/87

(46) 07/30/89, Bull. № 28 (75) L.V. mov

(53) 631.362.23 (088.8)

(56) USSR Author's Certificate No. 389845, cl. A 01 F 12/44, 1973.

(54) BLINDS SOLUTIONS

(57) The invention relates to an agricultural machinery industry, namely to grain harvesting and grain cleaning machines. The purpose of the invention is to reduce grain losses. The louvre sieve consists of frame 1, louver 2 attached to the crankshaft m 3,

adjusting strips 4 with grooves 5. When you move the adjusting strips 4, the cranked axles 3 rotate together with the louvres 2 fixed to them. between the first and second slots; l is the interval between the second and third grooves; 1 is the interval between the third and fourth grooves, Ij, is the interval between the penultimate and the last grooves, with the sequence number of the intervals increasing opposite to the direction of mass movement. 1 il.

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31496700

FIELD OF THE INVENTION The invention relates to agricultural machinery, namely, to grain harvesting and grain cleaning machines,

The aim of the invention is to reduce grain losses.

The drawing shows a louvre sieve, a longitudinal slit,

The louvre sieve includes a frame 1, louvers 2 attached to the crankshaft m 3, an adjusting bar 4, into the slots 5 of which the knees of the rotary crankshafts 3 are inserted.

When moving the adjustment bar 4, the cranked axles 3 rotate together with the louvers 2 fixed to them relative to the frame 1 in the places of attachment. However, the opening angle of the louver 2 will be different due to uneven intervals, subject to the following condition: 1 1, 1, j ,,, 1 ", where 1 is the interval between the first and second slots;

1, - the interval between the second and third grooves;

Ig - mezvu interval the third and fourth slots;

1 „- the interval between the penultimate and last slots.

The sequence index number of the interval increases in the opposite direction to the mass,

Gradually reducing the gap and lowering the level of the working edge of the louver allows more efficient use of the entire working surface of the sieve and increase the throughput of cleaning.

Claims (1)

15 claims The louvre sieve, including its frame, the adjusting bar with grooves, the louvers mounted on the crank axles, the louver group in the initial part of the sieve has an angle of inclination to the horizontal more than the other louvers, characterized in that, in order to reduce grain losses The distance between the slots of the adjusting bar is made decreasing in the direction opposite to the sieve mass movement. 20 25 1 „- the interval between the penultimate and last slots. The sequence index number of the interval increases in the opposite direction to the mass, Gradually reducing the gap and lowering the level of the working edge of the louver allows more efficient use of the entire working surface of the sieve and increase the throughput of cleaning. The louvre sieve, including its frame, the adjusting bar with grooves, the louvers mounted on the crank axles, the louver group in the initial part of the sieve has an angle of inclination to the horizontal more than the other louvers, characterized in that, in order to reduce grain losses The distance between the slots of the adjusting bar is made decreasing in the direction opposite to the sieve mass movement.