SU799835A1 - Riddle - Google Patents

Description

(54) SESHETO

The invention relates to the field of agricultural engineering, in particular to grain cleaning machines.

A sieve is known, including successive perforated sections in the form of truncated cones connected by smaller bases to larger ones, and at the previous cone the larger base is equal to the smaller base of the subsequent cone flj.

However, such a sieve is a conventional conical and has all the disadvantages inherent in conical sieves, in particular, the acceleration of the material to the output, which does not allow to tighten its mode of operation, and this, in turn, reduces the overall performance of the sieve.

The purpose of the invention is to increase the productivity of the sieve.

In order to achieve the goal, the sections of the proposed sieve are of the same size, which allows periodically accelerating and retarding the separated material, and this leads to an increase in sieve performance compared to the known cMecevT with the same separation quality,

FIG. 1 shows a sieve, front view; FIG. 2 - the same, top view. .

The sieve consists of two identical parts 1 in the form of semi-cylinders, which are disconnected along the generator, each part of the sieve contains at the top and bottom

Z-shaped shell 2 for installation on the skeleton of a sieve drum

0 (not shown) and between them - perforated sections 3 in the form of truncated cones. Sections 3 are sequentially arranged along the axis of the sieve and connected by large bases with smaller ones.

5 At the same time, the difference between the larger and smaller radii of the base of the cones does not exceed the average thickness of the layer of the material being processed. Loops 4 are fixed on the shells 2 for connection

0 of both halves of the sieve. On the sieve drum core. In the docking zone of the sieve parts 1, the dividers 5 and sealing gaskets 6 are fixed. The dividers guide the grain flow.

5 on the separating surface, and the gaskets exclude spillage of grain in the cTbikoBHx zones.

The sieve works as follows

In working condition part sieve

0 mounted on the sieve drum machine

which rotates around and oscillates along the vertical axis. Grain material is fed to the sieve from above and under the influence of rotational motion is pressed from top to bottom. The lower layers of grain, cut off by the steps of the surface 3, move along a conical surface, which, under conditions of reduced sieve rotation speeds, ensures a high permeability of particles, and the upper layers move above the steps with a greater speed, like on the surface of a cylinder, which enhances the intralayer loosening and movement of passing particles depths of the layer to the surface of the sieve. Passing particles are intensively sifting: –guts through the holes and enter one fraction, and large particles enter another fraction. At high loads such a sieve has the advantages of a conical and cylindrical sieve.

Claims (1)

Invention Formula A sieve, including successive perforated sections in the form of truncated cones, connected by large bases to smaller ones, characterized in that, in order to increase the performance of the sieve, sections are made of the same size. 5 Sources of information taken into account in the examination i. Sokolov V.I. Centrifuges. M, Mashgiz, 1950, p. 260 cm Sgs CD with