SU1058640A1 - Apparatus for dividing grain mixtures - Google Patents

Abstract

A DEVICE FOR SEPARATION OF GRAIN MIXTURES, including sifting a surface in the form of an installed vertical cylindrical sieve, an adaptation of the distribution of a grain mixture with vertical kangsha located inside the latter, in order to increase productivity by eliminating multiple circulation of the grain mixture over the working surface of the cylindrical sieve, as well as reducing metal consumption, the adaptation of the distribution of the grain mixture is made in the form of segments with elastic masonry equidistant from the surface of the sieve at a distance smaller than the thickness of the single-grain layer of the mixture; channels placed between the elastic pads. Sp eo ex

Description

The invention relates to machine building, in particular, to a device for separating grain mixtures according to length, and can be used in agriculture, the milling industry and other areas of national economy. A known machine for separating a grain mixture by size, including a rotating cylindrical sieve; inside which the drum is coaxially rotating at a different speed from the sieve, while rigidly attaching a screw to the sieve surface, the height of which does not exceed the thickness of one elementary layer of grain ij. The disadvantage of this machine is the low completeness of the selection of the long component of the mixture due to the disorienting effect of the ring brush. The closest to the invention in technical essence and the achieved effect is a device for separating grain mixtures, including a screening surface in the form of a vertically mounted cylindrical sieve placed inside the last device for distribution of grain mixture with vertical channels p2j. A disadvantage of the known device I is low productivity. The purpose of the invention is to increase the productivity by eliminating multiple circulation of the grain mixture over the working surface of the cylindrical sieve, as well as reducing metal consumption. This goal is achieved by the fact that in a device for separating grain mixtures, including a sieve surface in the form of a vertically cylindrical sieve, placed inside the latter, a device for distributing the grain mixture with vertical channels, the device for distributing the grain mixture is made in iide segments with elastic lining equidistant from the sieve surface is at a distance / smaller than the thickness of the single-grain layer of the mixture, and the channels are placed between the elastic plates. FIG. 1 shows a device, a general view of FIG. 2, a section A-A of FIG. If in FIG. 3 is a flow chart of the separation process. The device is equipped with a vertical cylindrical sieve with a round y-leg mounted on a cut-out disk 2 rigidly connected to a hollow drive shaft 3, placed inside the cylindrical sieve with | , Arranging the distribution of the grain mixture, consisting of restrictive segments 4 with elastic plates 5, mounted on the rear (along the sieve) walls of the vertical to the canals b with an inclined bottom 7, having a common base 8, mounted on the axis 9, the housing 10 and a collection and removal device 11 for dl. separated mixture components. The device works as follows. The grain mixture enters from the hopper (not shown) into the channels 6. In contact with the rotating cylindrical screen 1 (zone A), the mixture particles are oriented with the long axis parallel to the holes of the sieve 1 and, due to friction forces, are carried by a layer of one grain in thickness cylindrical sieve 1 and fixed segment 4 s. elastic pad 5 (zone B). Due to the difference between the speeds of the sieve 1 and the grain mixture layer, due to the inhibitory effect of the elastic pads 5 of the segments 4, the mixture particles move relative to the holes, which creates conditions for sifting short particles. This is facilitated by centrifugal force. Passing through the openings of the sieve 1, short particles are reflected from the casing 10 and fall into the outer funnel of the collecting and removing device 11. But the same particles, due to the limited gap, cannot turn to an angle sufficient to pass into the opening of the sieve 1 and go off, and then (zone c), pa-da, spill through the holes of the cut-out disk 2 into the internal funnel of the collecting-output device 11. To prevent the mixture from spilling down along segment 4 and to provide a single-layer distribution of the mixture over it, idistantno surface of the cylindrical sieve 1 with .zazorom smaller thickness odnozernovogo mixture layer. The specific size of the gap depends on the composition of the grain mixture, the size of its particles and the elastic properties of the elastic linings of the segments and is adjusted when adjusting the quality of separation. Thus, making adjusting the distribution of the grain mixture in the form of segments with elastic lining equidistant from the sieve surface at a distance smaller than the single grain layer of the mixture with channels placed between the elastic lining increases the productivity of the device by eliminating multiple circulation of grain the mixture on the working surface of the cylindrical sieve, as well as reduce the metal intensity of the device.

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Claims (1)

DEVICE FOR SEPARATION OF GRAIN MIXTURES, including a screening surface in the form of a vertically mounted cylindrical sieve, placed inside the last device for distributing the grain mixture with vertical channels, characterized in that, in order to increase productivity by eliminating multiple circulation of the grain mixture over the working surface of the cylindrical sieve, as well as reducing metal consumption, the adaptation of the distribution of the grain mixture is made in the form of segments with elastic pads Equidistant from the sieve surface at a distance less than the thickness odnozernovogo mixture layer, wherein channels are arranged between the elastic plates.