SU745431A1 - Seed cleaning machine riddle case - Google Patents

Description

(54) SOLUTION CREAM SEME CLEANING IMATTINS

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The invention relates to the field of cleaning and sorting of grain and can be used in production lines for post-harvest processing of grain crops.

The sieve mill of the seed cleaning machine is known; it contains flat sieves installed one below the other. Each sieve serves to separate certain particles — the upper sieve for separating large particles, the lower one — small ones. The separation of certain particles of the grain mixture is achieved by an appropriate choice of the shape and size of the sieve holes, which allow passage of some of the (larger) particles of the processed grain material under the sieve of some. The working size of the openings of the upper sieve of known sieve mills is larger than that of the lower sieve, and the number of Russ sieves is chosen depending on the number of fractions into which the source material is to be divided.

The sieve mill of the seed cleaning machine is also known, including one installed below one another with a longitudinal displacement of the sieve, transport boards located in front of them and dividers of fractions 2.

The main disadvantage of the known sieve mill is its low productivity due to the need to use strictly defined dimensions of sizing gates. Besides,

grain is clogged from the sieve hole, and their cleaning mechanism does not provide sufficient reliability of the sieve mill. The known sieve mill does not provide for the separation of the grain material along the length of the particles.

10 The aim of the invention is to eliminate the indicated drawbacks - increasing the reliability of work and productivity, as well as providing the possibility of cleaning the grain from short and long impurities.

The goal is achieved by the fact that

15 in the sieve pan, at least two adjacent sieves have the same holes,. the working size of which is greater than the width of the seeds being processed; the displacement of the sieves is greater than the ratio of the unit to the square of the working size of the holes and less than the assigned ratio (sizes are expressed in centimeters); dividers of fractions are placed under the sieves, and transport boards are interconnected by partitions.

The drawing shows the proposed lattice mill, side view in section. It contains sieves 1, installed one below the other with a longitudinal displacement and having identical holes, the working size of which is larger than the width of the seeds being processed. Transport boards 2 are installed in front of the sieves. Receivers of fractions 3, 4, and 5 and dividers of fractions 6 are placed under the slats. The sieve mill is fixed on the frame of the seed cleaning machine using the wings 7 and is driven back and forth by an oscillating mechanism 8. To feed the initial grain Material to The mill mill uses a feeder 9. To eliminate grain losses between transport boards 2, the latter are interconnected by partitions 10. During operation, the initial grain material consisting of seeds of the main crop, Example wheat and impurities consisting of small and large particles coming from the feeder 9 da upper sieve oscillating sieve box 1. The particles of grain material, moving along an inclined sieve, fall into the holes and pass through them to the transport board 2 or to the second sieve. The holes are picked to be taken large enough so that all the particles of the starting material, both the admixture and the main grain, pass through them without getting stuck; Grain material entering the transport board from the top sieve accumulates on it and a layer of a certain thickness descends on the sieve. Particles entering the second sieve from the first directly and from the transport board are sifted through it, falling on the third sieve, from the third to the fourth, and so on until the last. At the same time, fine particles of impurity (overgrazing, parts of broken wheat grain) in comparison with the others have a higher probability of passage into the holes of each sieve and are sifted mainly in the initial sections of sieves entering the receiver 3. Wheat seeds are sieved at more remote areas in the zone receiver 4. Large particles of impurities (oats, wild oats, etc.) have a much lower probability of passing into the holes and are sifted at even more distant sections of the sieves, entering the receiver of large impurities 5.

As a result of passing the material through the sieve cascade, not only is simultaneous cleaning of the grain from small and large quantities, but also its sorting by the size of seeds. In the zone 4 of the release of grain, small seeds are sifted through the sieve in the first sections of the grain, in the latter - the largest, and in the interval they are distributed continuously by size. This gives

the ability to divide (sort) the seeds into any number of fractions by one pass by dividing the sublattice zone by the dividers of the fractions.

The greatest separation efficiency of the grain mixture is achieved in cases where the thickness of the layer on the sieves exceeds the thickness of the elementary layer, but no more than ten times. Ensuring the optimum thickness of the layer of material on the sieves (except the first) is achieved by using the same holes and a certain displacement of the sieves relative to each other. Equal holes allow maintaining a rational thickness of the layer along the length of each

the sieve, which is defined by the corresponding displacement of the sieves, i.e. the length of the transport boards 2, performing the role of storage grain material.

Testing of a sieve mill showed high efficiency of its use on

0 cleaning the seeds of grain crops. You have the following advantages in comparison with the well-known sieve mill; high productivity, achieved through the use of sieves with large openings, the ability to separate the grain mixture along the length of the particles; the possibility of using the same solutions without changing the processing of different grain crops; the absence of a device for cleaning sieve holes.

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Claims (3)

1. The sieve mill of the seed cleaning machine, including those installed under one another with a longitudinal displacement of the sieve, 5 transport boards and fraction separators located in front of them, characterized in that, in order to increase reliability and productivity, at least two adjacent sieves have the same f holes, the working size of which is greater than the width of the seeds being processed. 2. A mill according to claim 1, characterized in that the displacement of the sieves is greater than the ratio of one to the square of the working size of the holes and less than the combined ratio. five 3. Stan on PP. I and 2, characterized in that the fractional dividers are placed under the sieves, and the transport boards are interconnected by jumpers. Information sources, JJ taken into account in the examination 1.Sokolov A. Ya. Technological equipment of enterprises for the storage and processing of grain. M., “Kolos, 1967, p. 365. 2. USSR author's certificate No. 180903, cl. B 07 B 4/00, 1966 (prototype).