RU2134162C1 - Reduced method of producing flour from wheat - Google Patents

Abstract

FIELD: flour milling industry. SUBSTANCE: method involves additional moistening of grain in front of first batten system till optimum moisture content of 0.6-0.85% to impart elasticity to grain fruit and seed coats; extracting particles with size of up to 750 microns at first batten system and particles with size of up to 630 microns at second batten system; joining products obtained at two batten systems and directing joined product to first milling system; directing product with particle size of more than 630 microns to second milling system. Thus, method uses two batten systems with following two milling systems and allows coarse meal products free of coat and endosperm junctions to be obtained. EFFECT: increased efficiency and improved quality of product. 1 dwg, 1 tbl, 5 ex

Description

 The invention relates to the milling industry, in particular to methods for the production of flour for bakery products. The method is recommended for use in flour mills, which do not allow to implement the developed process flow diagram, especially for enterprises of small and medium capacity.

 A known method for the production of flour from wheat (Copyright certificate N 2035225). According to this method, grain grinding on the first torn system is carried out at a specific load of 800-850 kg / cm per day and a gap between the rollers, which ensures the total extraction of the product, in the amount of 50-60% of the mass of grain sent to the system. After sorting the grinding products, large-dun products with a particle size of 438-156 microns are mixed from the first and second tattered systems, and then they are sifted together, while a fraction of small grains and dunsts with particle sizes of 438-220 microns is isolated, and the grinding of grains and dunsts carried out in one step. As a result, as noted by the inventors, get the first grade flour with a yield of up to 85%.

 The disadvantage of this method is the large extent of torn and grinding systems and, as a result, higher energy costs for grinding grain into flour.

 Closest to the claimed is a method of grinding flour with an abbreviated process diagram ("Rules for the organization and conduct of the technological process in flour mills", VNPO "Zernoprodukt", part 1, Moscow, 1991, p. 54). Unlike the developed grinding schemes, the latter has reduced sieve, grinding and grinding processes. The scheme includes 5 tattered systems and 8-10 grinding and grinding systems. The technological scheme provides two-grade grinding of wheat with a total yield of flour 75-78%.

 The disadvantage of this method is the large extent of torn and grinding systems and, as a result, higher energy costs for grinding grain into flour.

 The objective of the invention is the rational use of equipment, reducing the process flow diagram while maintaining the high quality of the produced product.

 The problem is solved due to the fact that in the reduced method for the production of wheat flour, including preparing the grain for grinding by cleaning it from impurities, moistening and smoothing, stage-by-stage grinding on torn systems with the separation of grains and dunst fractions, grinding grains and the formation of varieties of flour, is different by the fact that the grain is moistened before the first torn system by 0.60-0.85% of the optimum moisture content for a given batch of grain; the first torn system is used to grind the grain with less 750 microns, while achieving their total extraction in the range of 50-65%, and fractions with a particle size of more than 750 microns are sent to the second torn system, where grinding is carried out with the separation of fractions of a particle size of 630 microns, while achieving their total extraction of intermediate products within 65- 70% The product obtained on the first tattered system with a particle size of 438-750 microns, combined with the product obtained on the second tattered system with a particle size of 438-630 microns, and sent to the first grinding system. The product obtained on the second grinding system with a particle size of more than 630 microns is sent, depending on the grinding conditions in the bran and for grinding the shells, to a grinding machine with a sieve size of 800 microns, the first pass of which is sent to the second grinding system, and the second pass is sent to the bran or to the second grinding system. The product obtained on the first grinding system with particle sizes of 165-370 μm is sent for subsequent grinding to the second grinding system, and the product with particle sizes of 226–370 μm can be sent, depending on the grinding regimes, for repeated grinding to the same system or bran.

 It is known that for grinding grain is sent to flour mills with optimal humidity, which depends on its vitreous nature and type of grinding. According to the proposed method, dampening of grain before the first torn system is carried out at 0.60-0.85% of the optimum humidity to increase the moisture content of the shells. With this moistening, the fruit and seed membranes acquire elasticity, which, together with the high extraction rates on the first tattered system with a particle size of less than 750 μm, and on the second torn system up to a particle size of less than 630 μm, allows to obtain high-quality large-sized products without intergrowths of shells with endosperm, with further grinding on grinding systems, obtaining flour of the highest, first and second grades. Moreover, at the first stage we have two tattered systems, then two grinding systems follow.

 The method is as follows (see drawing).

 Wheat grain milling conditions are cleaned of weed, grain, mineral and metallomagnetic impurities. Then, the grain surface is cleaned of the fragile and most contaminated shells, the optimum grain moisture is determined and the grain is moistened until the shell moisture content is increased by 0.6-0.85% of the optimum moisture content for a given grain batch and is cured.

 Thus prepared grain is sent to the grinding, which is carried out according to the scheme, having 2 torn, grinding and 2 grinding systems.

 The grain is sent to the first tattered system. The largest fraction of the first torn system (first descent) with a particle size of more than 750 microns is sent to the second tattered system of the first grinding stage. The grinding mode is set so as to obtain 50-65% of fractions with particle sizes of 630-438 μm from the mass of the product sent to the grinding system.

 On the second tattered system, the product is ground with the separation of fractions of a particle size of 630 microns. The grinding mode was set so that the total extraction of the fraction of this size was within 65-70%.

 The upper gathering of the second torn system - this fraction is mainly from the shells with the remains of the endosperm, is sent either to a grinding machine with a sieve size of 800 microns, or to bran, depending on the grinding conditions on the second torn system.

 Two passes from two tattered systems with a particle size of 142-156 μm are grade 1 flour and they are sent for control, and grinding products with a particle size of 438-630 μm (second and third descent) from these systems are combined and sent for grinding to the first grinding system . The product obtained on the first grinding system with a particle size of 165-370 microns is sent for subsequent grinding to the second grinding system, and the product with particle sizes 226-370 microns is sent to small bran. Fractions with a particle size of 132-142 microns are sent to control the highest grade flour, and with a particle size of mainly 156 microns to the control of first grade flour. On the second grinding system, the final grinding of the product from the first grinding system, as well as the product after the grinding machine with a particle size of less than 800 microns, is carried out. A product with a particle size of more than 438 microns is sent to small bran, and a product with a particle size of more than 219 microns is sent to re-grinding the same grinding system. Fractions of flour with a particle size of less than 143 μm are controlled at the sieving of the first grade, and with a particle size of less than 219 μm sieved in the control sieving of flour of the second grade.

 Example No. 1.

 A batch of grain of 100 tons was received for processing at the mill after preliminary processing. The optimal moisture content of the grain was 14.5%, after wetting, the moisture content of the grain increased by 0.6% and amounted to 15.1%. After the second torn system, a product with a particle size of more than 630 μm (upper gathering) was sent to a grinding system with a sieve size of 800 μm, the first and second pass of which were directed to the second grinding system.

 Example No. 2.

 The optimum moisture content of the incoming grain was 14.5%, after wetting - the moisture content of the grain increased by 0.65% and amounted to 15.15%. After the second tearing system, a product with a particle size of more than 630 μm (upper gathering) was sent to a grinding system with a sieve size of 800 μm, the first passage of which was directed to the second grinding system, and the second passage to the bran.

 Example No. 3.

 The optimum moisture content of the incoming grain was 14.5%, after wetting - the moisture content of the grain increased by 0.7% and amounted to 15.2%. After the second torn system, a product with a particle size of more than 630 microns (upper gathering) is sent to the bran.

 Example No. 4.

 The optimum moisture content of the incoming grain was 14.5%, after wetting - the moisture content of the grain increased by 0.75% and amounted to 15.25%. After the second grinding system, a product with a particle size of more than 226-370 microns is sent to the bran.

 Example No. 5.

 The optimum moisture content of the incoming grain was 14.5%, after wetting - the moisture content of the grain increased by 0.85% and amounted to 15.35%. After the second grinding system, a product with a particle size of 226-370 μm is directed to the same system for re-grinding.

 The results of the processing of grain, examples 1-5 are shown in the table.

 Thus, as a result of the application of the proposed shortened method for the production of flour from wheat, three varieties of flour were obtained with a total yield of 75%, top grade 6.3%, first grade 55%, second grade 13.7%, in terms of the output for each grade according to compared with the well-known not only not lower, but also slightly higher.

Claims (1)

 An abbreviated method for the production of wheat flour, including preparing grain for grinding by cleaning it from impurities, moistening and smoothing, stage-by-stage grinding on torn systems with the separation of grains and dunsts fractions, grinding grains and the formation of varieties of flour, characterized in that the grain is re-moistened before the first the system is carried out at 0.60 - 0.85% of the optimal humidity for a given batch of grain; on the first tattered system, grain is milled with the separation of fractions of particle size less than 750 microns, while achieving their total its extraction in the range of 50 - 65%, and fractions with a particle size of more than 750 microns are sent to the roller mill of the second torn system, after sorting the products, a fraction of 630 microns in size is extracted, achieving their total extraction in the range of 65 - 70%, the product obtained on the first torn system with a particle size of 438 - 750 microns, combined with the product obtained on the second torn system with a particle size of 438 - 630 microns, and sent to the first grinding system, the product obtained on the second torn system with a particle size of more than 630 microns, sent depending on re grinding them in bran or for grinding the shells into a grinding machine with a mesh size of 800 microns, the first pass of which is directed to the second grinding system, and the second passage to the bran or second grinding system, the product obtained on the first grinding system with particle sizes 165 - 370 microns, sent for subsequent grinding to the second grinding system, in addition, a product with particle sizes of 226 - 370 microns can be sent, depending on the grinding regimes, for repeated grinding to the same system or to small bran.

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