RU20859U1 - MILLING AND Sieving Division of the Roller Mill - Google Patents

Abstract

1. The grinding and sieving compartment of a roller mill for multi-varietal grinding of wheat, having grinding equipment, which includes torn, grinding and grinding systems, the first torn system having inlet means for connecting to a source of cleaned and fired grain, sieving equipment based on at least one multi-receiving screening and sieve machine, which are connected to the outputs of the grinding equipment systems, and suitable means of transport of intermediate and target bakery products for ide of screening equipment with grinding equipment and a knocked out compartment of the mill, characterized in that the grinding equipment consists of four tattered, five grinding and one grinding systems, and the screening equipment consists of one four-receiving and one six-receiving screening and the above-mentioned sieve machine, which is connected to a four-receiving screening while the second tattered system is connected on the first gathering of the first torn system, the third tattered system is connected on the first gatherings of the second torn and w of the grinding system, the fourth tattered system is connected along the first exit of the third torn system, the first grinding system is connected along the third descents of the first and second tattered systems, as well as along the last pass of the first grinding system, the second grinding system is connected along the last passes of the first, second and third tattered systems and the first grinding system, as well as the last descent of the grinding system, the third grinding system is connected to the last descents of the third torn and the first grinding systems and the last pass

Description

2QO1 il 9396 lilliepilllpPJ ™ 4№ ™ MPC in 04 sec. 4/00 MILLING AND Sieving Branch of the Roller Mill The utility model relates to the design of grinding and sieving compartments of roller (or, equivalently, roller) mills for multi-varietal milling of mainly wheat or grain based on wheat. Such branches can be used as a part of roller mills with a productivity from 10 to 100 (more than about 50) tons of target bakery products per day. Hereinafter, the term “target bakery products means wheat flour of the highest, first and second grades and semolina (in contrast to intermediate products such as cereals and by-products such as bran). The multi-varietal grinding process has a traditional structure and provides for: (1) maintaining the carry-over stock of grain at a level that is sufficient for the mill to work for a certain time; (2) usually multi-stage cleaning of grain from plant particles, lumps of soil, impurities of weed seeds and ferromagnetic particles, (3) soaking and smoothing of grain, (4) continuous grinding, which is usually carried out on roller machines, (5) continuous screening of products grinding at a multi-pass screening with the return of the separated large particles for additional grinding and selection of target products from the gatherings or passages of the sieves allocated for this, (6) knocking out the grinding products and (7) collecting them for packing and packaging, for example, in bags (see Rights la organization process in the mills -. M .: TSNIITEI Mingazov USSR, 1978). Operations (1), (2), (3), (6) and (7) practically do not affect the variety of bread products and the ratio of varieties and can be performed using devices whose selection and modification rules for specific technical conditions are well known to specialists. So, for example: for storage of carry-over stock, arbitrary storage bunkers are used that are equipped with suitable means for the dosed delivery of grain, B 04 C 4/06

bins, which are connected to the outlet of the last of the grain cleaning means through a conveyor connected to the water tank through the flow rate regulator, and

withdrawal tools are most often combined with the means of packing and packing of bakery products in the general collection and packing department.

However, the design of grinding and sifting compartments significantly depends on the required number of varieties of the target bakery products, on the desired share of the final variety in their total mass, and on the increasingly stringent requirements for resource conservation.

Separate fulfillment of these requirements now does not present significant difficulties.

For example, the grinding and sifting department of a roller mill model AGS

6/600, which is produced by Gruppo Molitorio of the Italian company AGREX, includes roller mills and individual screenings located above them.

Being extremely simple in design, such a grinding and sieving unit can be configured to simultaneously produce semolina and three varieties of flour. However, it takes up a lot of space and, along with such an inevitable by-product of grinding, such as bran, produces screenings that do not belong to any of the required varieties of baked goods, which sharply reduces the yield of flour of the highest grade.

A more complete grinding and sieving department of the roll mill of the AVM-ZM model (see the advertising and technical description of V / O TECHMASHEXPORT: VNESHTORGIZDAT, order No. 93129). It includes;

a) six pairs of rollers, which form four torn and two grinding systems,

each of which is equipped with a cyclone at the entrance;

the first cyclone is connected between the breaking bins and the first torn system, the air outlets from all cyclones are combined and connected through the cyclone battery of the final air purification from the bakery products and the fan to the atmosphere, and the cyclone inlets, except the first, are connected to the corresponding parts of the sieving;

b) six-receiving sieving, - sections of which are placed under the corresponding torn or grinding systems of grinding equipment and are connected:

along the aisle of all sieves after the first and second tattered and the first grinding systems - for the first grade flour knockout, for all the gatherings of the fourth torn system - for the bran knockout, for the first gathering of the first torn system - for the second tattered system, for the remaining gatherings of the first torn system and descents, except for the first, second torn system - to the first grinding system, according to the first descent of the second torn system and all descents of the second grinding system to the third tear system, for all descents of the first grinding system - to the second grinding system and for all descents the system of tattered system - on the fourth tattered system. However, the specified roller mill with such a grinding-sifting compartment is suitable only for two-grade grinding and does not exceed the yield of the first grade over the second, since the first grade is cut off only after all screens of the first and second tattered and first grinding systems. A higher yield of first-grade flour was provided by the grinding and sifting department of the roller mill according to Ukrainian patent No. 6817. It included: a) grinding equipment in the form of six roller machines, comprising four torn and two grinding systems, and b) six-receiving sieving, sections of which are located under the roller machine tools. The specified grinding equipment was connected in such a way: the first torn system to the entrance to the first sieving section, the second torn system to the first sieving after the first tearing system, the third tattered system to the first sieving after the second tear and the first and second grinding systems, the fourth tearing system - to all sifting gatherings after the third tearing system, the first grinding system - to the second sifting gatherings after the first and second tattered systems and the second grinding system - to the third sifting gatherings of the first and second dra x systems and gatherings, except the first, after the first grinding sieving system and said sieving was connected: on sacking first grade flour - the passage of sieves after the first and second torn grinding system and a second band screens grinding system,

at the bran end - along all the gatherings of the fourth torn and gatherings, except for the first, second grinding system.

Even more perfect and closest to the proposed technical essence grinding and sieving unit is known from the "Rules of the organization | i Introduction of the technological process at the large-scale plants (M1n1stvo of the Agro-industrial complex UkraTni, KiTvsky Institute Khl1boproduct1v, KiTv, 1998; the technological scheme in Fig. 12, p. 129). It has:

a) grinding equipment, which is connected to the source of weathered grain at the entrance and to the means of knocking out the target bakery products at the outputs and which includes torn, grinding and grinding systems, and more specifically:

five tattered systems, of which the first has a means of connecting to a source of refined and weathered grain

three sorting systems, two grinding systems, one descent system, six grinding systems,

four grinding machines, including three scouring machines and one vibrocentrifuge,

b) screening equipment based on at least one multi-screening screener and sieve machine, which are connected to the outputs of all these grinding equipment systems, and

c) suitable means of transport (mainly pneumatic transport and separation of intermediate and target bakery products from air flows) for connecting the screening equipment with grinding equipment and the knocked out compartment of the mill.

To connect the specified equipment to other sections of the mill and inside the grinding and sieving section, such inputs and outputs and such relationships are provided:

the first tattered system is connected to a source of refined and (usually twice) weaned grain; the fourth tattered system is connected via the second descent of the third torn system, by the first descent of the second grinding system and by the descent of the first scouring machine; the fifth tattered system is connected either on all gatherings, except the first, or on the last gathering of the fourth torn system; the sieve machine is connected at the last gatherings of the first, second and third tattered systems; the first sorting system is connected to the last lokhods of the first, second and third tattered systems; the second sorting system is connected in the last passage of the third torn system and in the passage of the second scouring machine; the third sorting system is connected along the last passage of the fourth torn system and along the passage of the second scouring machine; the first grinding system is connected to all descents, except for the first sieve machine, or along the aisle of this system, if it is not selected semolina; the second grinding system is connected by the last descent of the third torn system, by the first descents of the first and second sorting systems and by the second descent of the first grinding system; the first grinding system is connected in the last passages of the first sorting and first grinding systems; the second grinding system is connected in the last passages of the second grinding and first grinding systems and in the descent control of premium flour; assembly system connected to the last gatherings of the second grinding, first and second grinding systems; the third grinding system is switched on according to the last rovers of the second sorting, second grinding and descent systems and according to the descent of control of flour of the first grade; the fourth grinding system is connected through the last passages of the third sorting and third grinding systems; the fifth grinding system is connected to the last gatherings of the third sorting, gathering, third and fourth grinding systems and the control gathering of flour of the second grade; . S 5

the first and second scouring machines are connected on the first descent of the third torn system;

the third scouring machine is connected either on the first descent of the fourth torn system, or on all its descents;

the vibrocentrifuge is connected along the passage of the third scouring grinding machine;

a semolina pothole is connected along the passage of the sieve-vesicular system;

the bran knock is connected by the last gatherings of the fifth torn and sixth grinding systems, by the gatherings of the second and third scouring machines and by the descent of the vibrocentrifuge;

multi-receiving sifting connected to the pit:

- premium flour - along the passage of all screens of the first grinding system and the first

sieves of the first and second grinding systems,

first-grade flour - in the aisles:

- a sieve, in addition to the last, first, second and third tattered systems, the first and second sorting systems, the descending and third grinding systems and the second grinding system,

- on the first passes of the fourth and fifth grinding systems and

- along the second passages of the first and second grinding systems;

second-grade flour in the aisles:

- a sieve, except for the last, the fourth torn and the third sorting systems,

- on the second passages of the fourth and fifth grinding systems,

- along the passages of all sieves of the sixth grinding system and

- along the passage of the vibrocentrifuge.

In the described grinding and sifting department, premium flour is selected from only one grinding and two grinding systems, and tattered systems serve only to prepare the maximum amount of grain, which is then used to produce such flour. At the same time, the risk of clogging of premium flour with crushed shells of grains from torn systems is practically eliminated.

However, this advantage is provided at the cost of increasing the number of screening equipment (in particular, the introduction of three sorting stages), and the number of grinding systems for grinding the obtained grains. Therefore, the need for production facilities to accommodate the grinding and sieving compartments and the specific energy costs for three-grade grinding are increasing. The utility model is based on the task of changing the ratio of roller drills and grinding systems and the relationships of grinding and sifting equipment to create such a grinding and sifting compartment for a roller mill that would provide at least three varietal grinding of wheat with less equipment, production space and specific energy costs . The problem is solved in that in the grinding and sieving section of the roller mill for multi-varietal grinding of wheat, which has; grinding equipment, which includes torn, grinding and grinding systems, and the first torn system has an input means for connecting to a source of cleaned and weathered grain, sifting equipment based on at least one multi-receiving screening and sieve machine, which are connected to the outputs of the grinding equipment systems, and suitable means of transport of intermediate and target bakery products for linking the screening equipment to the grinding equipment and the retracted compartment of the mill, according According to the inventive concept, the grinding equipment consists of four torn, five grinding and one grinding systems, and the sifting equipment consists of one four-receiving and one six-receiving sieving and above the specified sieve machine, which is connected to the four-receiving sieving, the second tattered system is connected along the first exit of the first torn system , the third tattered system is connected at the first gatherings of the second torn and grinding systems, the fourth torn system is connected at the first gatherings of the third torn si threads first grinding system is connected through the third gatherings torn first and second systems, as well as the last passage of the grinding system 5. In this case:

the third tattered systems and the first grinding system, as well as the late descent of the grinding system,

the third grinding system is connected at the last gatherings of the third torn and the first grinding systems and at the last pass of the second grinding system,

the fourth grinding system is connected in the last passages of the fourth torn and second grinding systems and in the last pass of the third grinding system,

the fifth grinding system is connected to the last gatherings of the fourth torn system, as well as the third and fourth grinding systems,

the sieve machine is connected to the second gatherings of the first and second tattered systems,

the grinding system is connected at the exit of the sieve machine;

screening equipment connected:

- on the selection of flour of the highest grade - along the aisle of the majority, except the last ones, sieves of the first, second torn and grinding systems, the majority, except the last ones, sieves of the third torn system and the first sieves of the first, second and third grinding systems,

- on the selection of flour of the first grade - along the passages of the penultimate sieves of the third torn, the first, second and third grinding systems and along the passages, except for the last, fourth grinding system,

- on the knockout of flour of the second grade - in most cases, except for the last, passages of the fourth torn system, along the last passages of the fourth grinding system and all passages of the fifth grinding system,

- on the knockout of bran on the first gatherings of the fourth torn system and on all gatherings of the fifth grinding system.

In roller mills with such a technological scheme of the grinding and sifting department, premium flour is formed not only on grinding systems, as in the prototype, but - in part - on torn systems, starting with the first of them. This reduces the number of grinding systems, eliminates sorting systems and significantly reduces the screening surface. A consequence of this reduction in hardware costs is a reduction in the need for production facilities and a reduction in the specific energy costs of multi-varietal grinding.

The first additional difference is that the sieve machine is located below the indicated screenings, and the second additional difference is that this machine is connected down the aisle either to the semolina, or to the first grinding system2 of UI53 mu. Correspondingly, interoperational transport is facilitated and, if desired, a complete set of products of multi-varietal grinding of wheat is obtained at one roller mill. Further, the essence of the utility model is illustrated by a detailed description of the design and operation of the grinding and sieving compartments of the roller mill with reference to the accompanying drawings, which are shown in: FIG. 1 - front view of the grinding and sieving compartments; figure 2 is a flow diagram of the grinding and screening compartment. The grinding and sifting department of a roller mill for multi-varietal grinding of wheat (see Fig. 1) has a block 1 of grinding equipment, a block of 2 sieving equipment and suitable means (usually pneumatic) of transporting intermediate and target bakery products shown only by lines for connecting the equipment of block 2 with the equipment of the block 1. The exits from the grinding and sifting department of the mill to its knockout department are indicated by arrows with inscriptions that indicate the type of bakery fed to the knockout. More specifically, the composition of the equipment in blocks 1 and 2 and the relationship between these blocks are visible in figure 2. So, block 1 of the grinding equipment has: four tattered systems 3, 4, 5 and 6, of which the first torn system 3 is equipped at the inlet (see arrow with the inscription grain) with any suitable means of connecting to a source not shown especially weathered grain; five grinding systems 7, 8, 9,10 and 11 and one grinding system 12. All of these torn and grinding systems are made on the basis of suitable roller machines, which can easily be selected by specialists from among those available on the market. Screening unit 2 has one four-screen sieve 13 and one six-screen sieve 14 and a sieve machine 15, which is connected to the screen 13 and is usually located below both screens 13 and 14. These screens 13 and 14 can be manufactured by any plant that specializes in the manufacture of a mill equipment, and the sieve machine 15 can either be selected from among those available on the market, or made to order. z ..- v //. ss The individual nodes of the grinding equipment in block 1 are connected in this way through the respective receivers and sieves of the sifters 13 and 14 and the sieve machine 15; the second tattered system 4 - according to the first descent of the first torn system 3, the third tattered system 5 - according to the first descents of the second torn 4 and grinding 12 systems, the fourth tattered system 6 - according to the first descent of the third torn system 5, the first grinding system 7 - according to the third descent the first 3 and second 4 torn systems, as well as the last pass of the grinding 12 system, the second grinding system 8 - the last passages of the first 3, second 4 and third 5 torn systems and the first grinding system 7, as well as the last exit of the grinding 12 system, third grinding with Stem 9 - along the last gatherings of the third torn 5 and the first grinding 7 systems and along the last pass of the second grinding system 8, the fourth grinding system 10 - along the last passages of the fourth torn 6 and second grinding 8 systems and along the last pass of the third grinding system 9, fifth grinding system 11 - according to the last descents of the fourth torn system 6, third 9 and fourth 10 of the grinding systems, the sieve machine 15 - according to the second descents of the first 3 and second 4 torn systems and the grinding system 12 - according to the descent of the sieve machine 15. To remove food The following exits from block 1 of the screening equipment are provided for grinding from the grinding and screening unit: a) for the removal of flour of the highest grade - from the majority passes, except the last, sieve 13 of the first 3 and second 4 torn systems, from the majority passages, except the last sieve 14 of the grinding system 12, from the passages of the majority, except the penultimate, sieve 13 of the third torn system 5 and the first sieve of sieve 14 of the first, second and third grinding systems 7, 8 and 9, b) for the removal of flour of the first grade - from the passages of the penultimate sieve of sieve 13 mp tey ragged 5 and sieving 14 of the first, second and third 7, 8 and 9 middlings and passes but the last 14 sieving fourth grinding system 10; c) for knocking out flour of the second grade - from the majority, except the last, of the sifting passages 13 of the fourth tear 6, from the last passages of the fourth grinding system 10 and from all passages of the fifth grinding system 11 at sieving 14; d) for bran removal - from the first gatherings of sieving 13 of the fourth torn system 6 and from all gatherings of the fifth grinding system 11 at sieving 14. The sieve machine 15 can be connected down the aisle either to the semolina, or to the first grinding system 7. Multi-varietal process grinding in the described grinding-screening compartment of the roller mill is clear to the specialist already from the above description of the technological scheme and consideration of figure 2 of the drawings. Indeed, it is clear that: torn systems 3, 4, 5, and 6 pre-grind grain with the formation of predominantly intermediate bread products such as grains, grinding systems 7, 8, 9, 10, and 11 finally grind grain with the formation of predominantly targeted bread products, the Screener 15 separates relatively fine grains from grain particles with shell elements, the grinding system 12 separates the elements of the grain shell (bran) from the bulk of the large grain particles, and corresponding to the specified torn systems, grinding systems plansifters grinding system receivers 13 and 14 provide separation of intermediates grinding, milling vschelenie target products and the separation of the bran. An essential technological feature of the grinding of peeled and (usually twice) milled wheat grains in the proposed grinding and sifting department is that the selection of flour of the highest and first grades begins after torn systems 3, 4, 5 and 6 through the corresponding sections of the four-receiving sieving 13. Indeed, even after the initial crushing of grain, which enters the input of the first torn system 3, the screening receiver 13 corresponding to this section subdivides the crushing products into fractions which then come from its first of the first runoff - to the second tearing system 4, from the second runoff - to the sieve machine 15, from the third runoff - to the first grinding system 7 and from the last pass - to the second grinding system 8. Moreover, from the aisles of most sieves, the sieve 13, except the last , selection of flour of the highest grade takes place. system 5, on the second descent - the already mentioned sieve machine 15, on the third descent - the already mentioned first grinding system 7 and on the last pass - the already mentioned second grinding system 8. At the same time, from the passages of most sieves, sieve 13, except the last sieve, continues selection of flour of the highest grade. Continuing the consideration of the technological scheme of the grinding and sifting department taking into account the described examples, it is easy to see that: along with the first 3 and second 4 torn systems, for the selection of premium flour, they work as the third torn system 5 (through the majority passages, except the last, sieve 13) and the first, second and third grinding systems 7, 8 and 9 (through the passages of the first sieve 14), as well as the grinding system 12 (through the passages of the majority, except the last, sieve 14); the third tear system 5 (through passages of the penultimate sieve of sieving 13), the first 7, second 8 and third 9 grinding systems (through the penultimate sieve of sieve 14) and the fourth grinding system 10 (through most passages, except the last, sieves) work for the selection of flour of the first grade sieving 14); the fourth tattered system 6 (from most, except the last, sieving 13 passages), the fourth grinding system 10 (from the last passages of sifting 14) and the fifth grinding system 11 (from all passages of sifting 14) work for the selection of flour of the second grade; the fourth tattered system 6 (from the first gatherings of sifting 13) and the fifth grinding system 11 (from all gatherings of sifting 14) work for the selection of bran, and if you wish, it’s enough to connect the passage of the sieve machine 15 for the selection of semolina. The proposed grinding-sifting department is practically tested in the composition of roller mills designed to process 50 tons of wheat per day. With three-grade grinding, the total yield of flour of all varieties amounted to an average of 75% with a mass ratio of the highest, first and second grades approximately (50% + 20% + 5%). f (.

Claims (3)

1. The grinding and sieving compartment of a roller mill for multi-varietal grinding of wheat, having grinding equipment, which includes torn, grinding and grinding systems, the first torn system having inlet means for connecting to a source of cleaned and fired grain, sieving equipment based on at least one multi-receiving screening and sieve machine, which are connected to the outputs of the grinding equipment systems, and suitable means of transport of intermediate and target bakery products for ide of screening equipment with grinding equipment and a knocked out compartment of the mill, characterized in that the grinding equipment consists of four tattered, five grinding and one grinding systems, and the screening equipment consists of one four-receiving and one six-receiving screening and the above-mentioned sieve machine, which is connected to a four-receiving screening while the second tattered system is connected on the first gathering of the first torn system, the third tattered system is connected on the first gatherings of the second torn and w of the grinding system, the fourth tattered system is connected along the first exit of the third torn system, the first grinding system is connected along the third descents of the first and second tattered systems, as well as along the last pass of the first grinding system, the second grinding system is connected along the last passes of the first, second and third tattered systems and the first grinding system, as well as the last descent of the grinding system, the third grinding system is connected to the last descents of the third torn and the first grinding systems and the last pass at the second grinding system, the fourth grinding system is connected along the last passages of the fourth torn system and the second grinding system and along the last pass of the third grinding system, the fifth grinding system is connected at the last passes of the fourth torn system, third and fourth grinding systems, the sieve machine is connected at the second gatherings of the first and the second tattered systems, the grinding system is connected by the exit of the sieve machine; sifting equipment is connected: for the selection of flour of the highest grade - along the aisle of the majority, except the last, sieves of the first and second tattered systems, most, except the last, sieves of the grinding system, most, except the penultimate ones, sieves of the third torn system and the first sieves of the first, second and third grinding systems, for knocking out flour of the first grade - along the passages of the penultimate sieves of the third torn, first, second and third grinding systems and along the passages, except for the last, fourth grinding system, for knocking out flour of the second grade - for the majority, cr Ome of the latter, the passages of the fourth torn system, along the last passages of the fourth grinding system and all the passages of the fifth grinding system, at the bran end at the first descents of the fourth torn system and all the descents of the fifth grinding system.  2. The grinding and screening unit according to claim 1, characterized in that the sieve machine is located below the said screenings. 3. The grinding and screening compartment according to claim 1, characterized in that the sieve machine is connected in the aisle either to a semolina groove or to the first grinding system.