UA126224U - METHOD OF PRODUCTION OF BARLEY GROUPS - Google Patents

Abstract

A method for the production of barley cereals involves the cleaning of grain from impurities, peeling, grinding, grinding and sorting of products of grinding. Grain with a moisture content of not more than 14% is ground once, ground on one roller mill system, sorted, with the kernels of fractions with a particle size of more than 2.2 mm once polished, and the kernels of fractions with a particle size of less than 2.2 mm are controlled in air separators and grind into flour.

Description

The useful model belongs to the grain industry, in particular to methods of processing whole grain barley into grain products, specifically - crushed grains.

The closest to the claimed useful model is the method of processing filmy varieties of barley into cereals with a total yield of 65,956 finished products, which includes cleaning the grain from impurities, husking, preliminary grinding, sequential grinding of the kernel, sorting of grinding products, grinding of medium-sized fractions , sorting and control of cereals

went "Rules of organization and management of the technological process at grain factories". - K.:

Ministry of agro-industrial complex, 1998. - P. 53-56).

Cleaned from characteristic impurities, the grain of flaky barley is sent to peeling, which is carried out by sequentially passing through four peeling systems. Existing technology allows the stage of hydrothermal treatment of barley before husking. The grain is steamed at a steam pressure of 0.20 MPa for 3 min., dried to a moisture content of no more than 15 95 and sent to husking. At the first stage, barley is husked on two systems of upholstering machines, at the second stage on two systems of husking and grinding machines of type AT1-ZShN. Hulled barley (pensak) is sent to grinding, which is carried out on one or two grinding systems, after which the grinding stage is carried out, which is implemented on four consecutive grinding systems. Grinding is carried out with simultaneous sorting. On all sorting systems, small particles of the crushed core are removed by passing through metal woven sieves Me 080 and sent to flour control. The largest particles obtained by passing metal woven sieves Mo 2.8 (on the first and second grinding systems) and Mo 2.5 (third grinding system) after control in air separators are sent for additional grinding on roller machines of the following systems. Coarse particles from the diffuser of the last grinding system, obtained by the rise of the Mo 2.0 sieve, after the extraction of small particles in the air separator, are returned to the roller machine of the third grinding system. Medium-sized products obtained by passing through sieves with openings of 1.8 mm and 1.5 mm are sifted and sent to grinding. Small products that have passed through punching sieves with holes of 1.8 and 1.5 mm are a mixture of barley groats of different numbers, which, after processing in air separators, are sent to the stage of groat sorting. One system is used for grinding medium-sized products, after which they enter the first sorting system of the stage

From the sorting of barley grains. At the sorting stage, which is implemented on three systems, barley groats are divided on the corresponding sieves into three numbers.

This method was chosen by the prototype.

The prototype and the claimed useful model have the following common operations: - grain cleaning from impurities; - peeling; - grinding; - grinding; - sorting of grinding products.

However, the known method includes a long duration and complexity of the technological process: 3-4 peeling systems, 1-2 grinding systems, 4 systems for grinding the polished core, which requires significant production areas to accommodate the appropriate technological equipment and causes difficulties in implementing this process in factories low productivity.

The basis of a useful model is the task of developing a method of production of barley groats, in which by changing the order of operations and modes - exclusion of peeling, one-time grain grinding, grinding on one system (the number of grooves per 1 cm of the roller circle is 6 pcs., the slope of the grooves to the horizontal 6 95, the speed of rotation of the rollers b m/s), one-time polishing of the crushed core, as well as the use of whole grain barley of a certain grade, to ensure the simplification of the technological process by reducing the number of operations and increasing the yield of finished products.

The task is solved in the method of production of groats from barley, which includes cleaning of grain from impurities, peeling, grinding, grinding and sorting of grinding products, in that, unlike the prototype, grain with a moisture content of no more than 14 95 is ground once, grinded on one system of roller machines, are sorted, while the kernels of the fraction with a particle size of more than 2.2 mm are polished once, and the kernels of the fraction with a particle size of less than 2.2 mm are controlled in air separators and ground into flour.

The method is carried out in the following order. Cleaned from impurities, bare grain barley grain, for example, of the "Achilles" variety, with a moisture content of no more than 14 95, is sent to one-time grinding, which is carried out with the use of husking-grinding machines that work on the principle of intensive abrasion of shells of the ZShN type. The circular speed of the disks is set at 60 20-22 m/s. A decrease in the circular speed of the discs will lead to insufficient removal of the surface layers of the grain when processing the grain on one grinding system, which will accordingly cause the need to increase the number of systems to two or three. Increasing the circular speed of the discs will contribute to a more intensive removal of the surface layers of the grain, which will lead to an increase in the number of by-products in the form of particles of crushed kernel and flour, while reducing the yield of the whole kernel and finished products. In addition to increasing the yield of by-products, it will lead to the need to expand the sorting stage of peeling products due to the installation of additional machines - sieve air separators and aspiration columns.

The mixture of grinding products for the extraction of flour and particles of finely ground kernel enters aspiration columns or air separators, after which the kernel is directed to grinding. This operation is carried out on AT1-BZN rolling machines on corrugated rolls with the following characteristics: the number of corrugations per 1 cm of the circle of the rolls is 6 pcs., the slope of the corrugations to the horizontal is 6 95, the speed of rotation of the rolls is 6 m/s. Reducing the number of flutes by 1 cm of the circle of rollers will lead to insufficient grinding of the core and obtaining large particles of the core, which will have to be additionally crushed on 2 systems, which will cause the need to install additional rolling machines and, accordingly, screening machines for sorting grinding products, increasing the number of flutes will lead to the opposite to excessive crushing of the kernel, which will increase the number of small particles of the crushed kernel and flour, which do not belong to the cereal during sorting.

Grinding products are sorted in A1-BRU grain spreaders. By passing through sieves E 2.5 mm and 5 2.2 mm, the coarse and medium fraction of the crushed core is obtained, which is controlled by passing through air separators or aspiration columns and sent to polishing. Particles small in size, obtained by passing through 2 1.2 mm sieves after control in air separators and magnetic control, are sent for grinding into flour.

Polishing of the core is carried out in peeler-grinding machines of the ZShN type, which work according to the method of intensive abrasion of the shells. The circular speed of the disks is set at 16-18 m/s.

The mixture of polishing products of each fraction is passed separately to extract flour through two systems of air separators or aspiration columns. After that, the core of the coarse fraction is Mo 1 groats, the medium fraction is Mo 2 groats. After magnetic control, the groats are sent to bunkers for finished products or for packaging.

Example

Received barley groats. For this purpose, barley grain of the "Achilles" variety, with an initial moisture content of 13.6 96 and a weight of 2000 g, cleaned of impurities, was weighed on an automatic scale and sent for grinding, which was carried out once using a dehusking-grinding machine, which works on the principle of intensive shell abrasion. The circular speed of the disks was set at 20 m/s. The mixture of grinding products was fed to aspiration columns, where aerodynamically light components - flour and particles of finely ground core - were extracted. The whole core was sent for grinding in a rolling machine with the following characteristics of the rolls: the number of grooves per 1 cm of the circle of the rollers b pcs., the inclination of the grooves to the horizontal in b 95, the speed of rotation of the rollers 6 m/s. Sorting of grinding products was carried out in a disperser. By passing sieves 2 2.5 mm and 25 2.2 mm, the coarse and medium fraction of the crushed core was obtained, which was controlled by passing through aspiration columns and sent to polishing. The small-sized particles obtained by passing through sieves of 1.2 mm after control in air separators were sent for grinding into flour. Polishing was carried out in a peeling-grinding machine, which works according to the method of intensive shell abrasion. The circular speed of the disks was set at 16 m/s. The mixture of polishing products of each fraction to extract flour was separately passed through two systems of aspiration columns. After that, the core of the large fraction was characterized as grain Mo 1, of the medium fraction - grain Mo 2.

As a result of the processing of "Achilles" barley, the total yield of crushed grains Mo 1--Mo 2 was 62.5 95, flour - 13.8 95, by-products and waste (taking into account mechanical losses) - 23.7 U.

Claims (1)

USEFUL MODEL FORMULA The method of production of barley groats, in which grain cleaning from impurities, peeling, grinding, grinding and sorting of grinding products is carried out, which is characterized by the fact that grain with a moisture content of no more than 14 95 is ground once, grinded on one system of rolling machines, sorted , while the kernels of the fraction with a particle size of more than 2.2 mm are polished once, and the kernels of the fraction with a particle size of less than 2.2 mm are controlled in air separators and ground into flour.