Unit for micronizing of fodder grain

FIELD: agriculture.

SUBSTANCE: invention relates to the equipment for thermal processing of fodder grain and can be used in combined fodders and food-processing industry. The unit includes a feed bin, in alignment with which heat exchanging device and VHF chamber with VHF energy source are located. The unit has a chamber of a swelling. A feed bin, heat exchange device, VHF chamber and swelling chamber are connected to each other with batchers sealed with atmosphere enclosed boxes, and form a sealed system. In the heat exchange device equipped with the steam supply system, on internal surface of the case at the angle 45° to vertical axis the guiding disk rippers are fixed. The disks are designed as an ellipse, with a clearance 30 mm between them, they have in the lower part a trapezoid cut, the smaller base of which is located at the distance 0.5R of larger radius of the ellipse. The lateral sides are located at the angle 90° with reference to the center of the ellipse. On the internal surface of the dielectric cylinder of the VHF chamber the identical guiding disks made from dielectric are installed at the angle 51° to a vertical axis and on distance of 30 mm to each other.

EFFECT: invention will allow to improve quality of grain treatment.

2 dwg

 

The invention relates to equipment for the heat treatment of feed grain, grain feed ingredients and can be used in feed and food industry.

The famous "Installation for micronisation of grain products" (and.with. SU, 1711779, A23B 9/04, 9/06, A23L 1/025, 3/26, F26B 3/30, 15.02.1992,), which contains the working chamber, the loading hopper, conveyor, made of hollow transparent to infrared radiation rods, which is the source of infrared radiation, while the hopper is equipped with a mixer and an exhaust fan for preheating grain pairs of evaporated moisture from the working chamber.

The use of infrared radiation provides the heat in the workpiece material at small depth is the surface heat, and for high-quality processing you need to reach boiling internal moisture, which in this case is possible by prolonged heating of feed grain in the area of infrared radiation; convection method of heat transfer leads to a high specific energy consumption, possibly partial charring the surface of the processed product.

Known "Method for disinfestation and disinfection materials grain origin and device for its implementation" (U.S. Pat. EN 2143794, A01C 1/00, A23L 1/025, A23L 3/01, A01F 25/00, A23B 9/04, H05B 6/64, H05B 7/18, 10.01.2000,). This JV is own, implemented in the device involves the conversion of microwave energy into the energy of the plasma, occupying the entire working volume, through which are passed the materials grain origin, but only part of it, and then it is a small plasma formation move around the working volume so that during the span of all grains were subjected to plasma exposure.

The main criterion of quality in the process is the heating temperature of the material grain origin, a critical numerical value of which is determined for each of the different groups of microorganisms and fungi (Syrovatka Century. And. "Machine technology for preparation of animal feed on farms" Moscow, Russian Academy of Sciences, 2010, page 114). The method and the device are complicated and difficult to perform in practice.

The closest in technical essence of the present invention is an Installation for micronisation of grain products" (U.S. Pat. EN, 2168911, A23L 1/18, A23L 1/025, A23L 3/01, A23B 9/04, F26B 3/34, 20.06.2001,) is taken as a prototype, in which the heated grain by gravity into the chamber exposure 3, where under the action of microwave radiation supplied from a source of microwave energy 20, is instantaneous heating of the internal moisture of grain, causing it to boil, rupture of tissues grain shells, the transformation of starch into dextrin.

Because the camera exposure it directly is connected with an exhaust duct, and through the perforated wall of the intermediate and inner shells of the tailgate at the same time connected with the supply duct, and conditioner dosing, all working parts are constantly communicated with each other and with the atmosphere. The camera exposure is not sealed, not guaranteed pressure drop, so the process of micronisation will not have the required quality. The efficiency of the heater is inferior to direct water heating liquid fuel or gas. Expanded grain to punish is not required, it is loose, soft, sanitized, well eaten by animals and birds. Also, is used as a coolant heated air, which dries the treated product, and micronisation technology it is necessary to moisten.

The task of the invention is to improve the quality micronisation of coarse grains, while expanding the range of the processed material, structural reliability, decrease of metal and energy consumption.

This object is achieved in that the apparatus for micronisation of feed grain, including the hopper, coaxially with which are heat-exchange device and the microwave chamber with a source of microwave energy, it is new that the installation is equipped with a camera of expansion, with the hopper, heat transfer condition is the device, Microwave Luggage and Luggage expansion communicated among themselves dispensers, sealed with the atmosphere of closed boxes, and are sealed system, and in the heat exchanger with the steam system, on the inner surface of the housing at an angle of 45° to the vertical axis fixed guide CD-rippers, made in the form of an ellipse, with a gap of 30 mm between them, having in the lower part of each of the disks-rippers cut in a trapezoid shape, the smaller base of which is located at a distance of 0.5 R major radius of the ellipse, and the sides are at an angle of 90° relative to the center of the ellipse, moreover, on the inner surface of the dielectric cylinder microwave camera installed at an angle of 51° to the vertical axis and at a distance of 30 mm between identical in design guides disks-rippers, made of dielectric.

It is known that the specific heat of water at a temperature of 80°C in 4 times the specific heat of air, and thermal conductivity at 23 times (Didenko, A. N. "Microwave-energy - theory and practice", M, Science, 2003, page 39, PL. 19). So economically as a coolant to use wet or dry steam, not heated air. Due to this accelerated heat treatment process that reduces the size of the equipment and, consequently, its meta is oemcust. The micronisation technology provided by the hydration of the treated grain, which is achieved by heating the steam.

Set (high Temperature infrared technology of the new Millennium // [Electronic resource]. URL: http://www.pcstart.ru paragraph 49, Fig. 1, accessed 07.08.2012) that if the shutter speed is 50 kinetics of heating the grain in the heat exchange device is as follows: the temperature on the surface of the grain is 180-200°C and the temperature inside the grain equal to 110-120°C. Therefore, it is advisable to bring up to 180-200°C using microwave processing as this occurs through heating of the grain and heats only the water inside it, which under normal moisture of grain contains 14%.

Due to the fact that expanded the grain softens and increases in volume of 2-5 times, cells partially hydrolyzed, beans acquire a porous structure, become hygroscopic and sterile, intracellular structures become accessible to digestive enzymes.

Implementation guide discs-rippers in the form of an ellipse cut in their lower part in the form of a trapezoid, the location of the smaller base at the distance of 0.5 R major radius of the ellipse, the location of the lateral sides at an angle of 90° relative to the center of the ellipse, and fastening with a gap of 30 mm is determined empirically, based on the maximum loosening, uniform distribution and prog the eve of the processed grain on the surface neustanovlennoe guide disc Ripper.

The angle of the guide discs-rippers 45° fixed on the inner surface of the housing of the heat exchange device, defined by the coefficient of external friction of dry barley, and the angle of inclination of the disk-rippers 51°, mounted on the inner surface of the microwave chamber, adopted by the coefficient of internal friction of wet barley (Sokolov, A. J. "Technological equipment of enterprises for storage and processing of grain" M, ear, 1975, page 28, table. IV-I).

In connection with the processing of different types of feed grain and its physical condition (humidity, duration of storage, the type and degree of bacterial contamination and others) there is a need to adjust the exposure-time processing. This is achieved by changing the performance of the dispensers. Installation of dispensers in a box allows sealing them with the atmosphere and get a hermetically sealed structure.

The essence of the invention is illustrated in Fig. 1 - installation scheme for micronisation of coarse grains, Fig. 2 - section a-a in Fig. 1.

Installation for micronisation of feed grain contains hopper 1 (see Fig. 1) with built-in it the agitator 2 is provided with a heat exchange device 3, the microwave chamber 4 and chamber 5 by means of expansion of feeders 6, 7 and 8, is sealed to the atmosphere and closed boxes 9, 10 and 11. In the heat exchange condition the device 3, equipped with a steam system 12, on the inner surface of the housing at an angle of 45° to the vertical axis fixed guide CD-rippers 13 (Fig. 1, 2) in the shape of an ellipse, with a gap of 30 mm between them. Microwave chamber 4 is inside the dielectric cylinder 14, on the inner surface of which is at an angle of 51° to the vertical axis at a distance of 30 mm between a fixed identical in design guides disks-rippers 15, made of dielectric, and the microwave chamber is connected to a microwave generator 16 through the waveguide 17.

The device operates as follows.

On the basis of weight and a given exposure, processing of raw material in the heat exchange device 3, the pre-calculated performance of a metering device 6 with a closed duct 9, which sets the performance dispensers 7 with a closed box 10 and the metering device 8 with a closed box 11. The performance of the dosing is adjusted by changing the number of revolutions of the drive motor (not shown). Pre-purified feed grain is fed into the hopper 1 and the agitator 2 through the spout 6 is fed into the heat exchanger 3 on the guide discs-rippers 13, namely, getting on the upper guide disc Ripper 13, mounted at an angle of 45° to the vertical axis, grain rolls down an incline and through the cutout in the form of the e-line in the bottom evenly sprinkled on the following guide disk Ripper, located at a distance of 30 mm, etc., Processed grain, being loose, uniformly treated with superheated steam blown by the steam system 12, is warming up the entire mass of each grain separately. When you reach the lower level of the heat exchange device 3, the processed grain dispenser 7 is unloaded in the microwave chamber 4 and falls on the guide discs-rippers 15, made of dielectric material and secured to the inner surface of the dielectric cylinder 14 at an angle of 51° to the vertical axis. Getting on the upper guide disc Ripper 15, grain rolls down an incline and through the cutout in the shape of a trapezoid in the bottom evenly sprinkled on the following guide disk-Ripper 15, located at a distance of 30 mm, and so on, due to the working of the generator 16 through the waveguide 17, rapid microwave heating of the grain. After microwave processing through spout 8 grain is transferred into the chamber of expansion 5, in which a sharp drop of pressure and temperature leads to boiling of internal moisture, there is a rupture of the tissue grain shells, which leads to swelling of the grain.

Thus, using the proposed design for micronisation of feed grain possible consistent heat that is high (100%) level is ü micronisation, improving the quality micronisation of coarse grains, while expanding the range of material to be processed, reduced metal content, by reducing the necessary equipment and reduced energy costs by 15-20%.

Installation for micronisation of feed grain, including the hopper, coaxially with which are heat-exchange device and the microwave chamber with a source of microwave energy, wherein the plant is equipped with a camera of expansion, while the hopper heat exchanger, microwave Luggage and Luggage expansion communicated among themselves dispensers, sealed with the atmosphere of closed boxes, and are sealed system, and in the heat exchanger with the steam system, on the inner surface of the housing at an angle of 45° to the vertical axis fixed guide CD-rippers, made in the form of an ellipse, with a gap of 30 mm between them, having in the lower part of each of the disks-rippers cut in a trapezoid shape, the smaller base of which is located at a distance of 0.5 R major radius of the ellipse, and the sides are at an angle of 90° relative to the center of the ellipse, and on the inner surface of the dielectric cylinder microwave camera installed at an angle of 51° to the vertical axis and at a distance of 30 mm between identical in design to nab alaysia disks-rippers, made of dielectric.



 

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