RU161834U1 - SHELF-DRYING DRYER WITH MICROWAVE RADIATION - Google Patents

Abstract

Microwave radiation peeling and drying machine, comprising a housing with loading and exhaust nozzles installed in the housing, a sieve cylinder coaxially with it, a hollow shaft enclosed therein with holes on which abrasive circles are fixed, between which mesh shells are mounted, and the sieve cylinder has a stamping in the form of a helix, located obliquely to the generatrix of the sieve cylinder, characterized in that the microwave radiation generators are installed at the entrance to the working area of the machine.

Description

The utility model relates to devices for processing grain and can be used in the grain processing and animal feed industry, in particular for peeling rye, wheat and barley, as well as grinding and polishing barley in the production of cereals.

Known peeling and grinding machine, comprising a housing with loading and exhaust pipes, mounted in the housing, coaxially with it, a sieve cylinder, a hollow shaft enclosed in it with holes, with abrasive circles fixed to it, between which shells are mounted. The hollow shaft is installed horizontally, on it, under the loading nozzle, a feeding screw is located, abrasive wheels are mounted vertically on the shaft, between them air blowers are mounted on the shaft, and shells are located on their outer surface. The sieve cylinder, the inner surface of which is roughened, has perforations in the form of grooves that are inclined to the generatrix of the sieve cylinder. Shells are sets of rings (RF patent No. 2159679, IPC B02B 3/02, publ. 11/27/2000).

The disadvantages of this device are the decrease in the design productivity and quality of the processed product at high grain moisture, incomplete removal of husks and shells from the peeling zone.

Known peeling and grinding machine, comprising a housing with loading and exhaust pipes, a vertical shaft mounted in the housing with abrasive wheels horizontally mounted thereon, enclosed in a sieve cylinder, rigidly mounted in the housing, guide sectors mounted motionlessly above the abrasive circles and guiding sectors arcuate races mounted with the possibility of rotation in the horizontal plane, and an impeller is fixed on the shaft under the lower abrasive wheel (AS No. 1639738, IPC V02V 3/03, publ. 04/07/91).

The disadvantages of this device are low productivity and insufficient processing quality with increased grain moisture and non-intensive mixing of the product.

Closest to the claimed utility model is a peeling and drying machine (RF patent 2491124, IPC B02B 3/02, publ. 08/27/2013, bull. No. 24), comprising a housing with loading and exhaust pipes, a drive mounted in the housing, coaxially with him, a sieve cylinder with an inner rough surface, a hollow shaft enclosed in it with holes, in which infrared emitters are installed and abrasive circles are horizontally fixed along the shaft, between which mesh shells are installed, the sieve cylinder has a stamping in the form of a helix, located obliquely to the generatrix of the sieve cylinder, and a built-in fan.

The disadvantage of this device is that infrared emitters do not have time to heat the grain when it passes through the machine.

The technical task of the utility model is to improve the quality of processing grain with high humidity while maintaining the estimated performance.

This problem is solved in that in a peeling-drying machine with microwave radiation, comprising a housing with loading and exhaust nozzles, installed in the housing, coaxially with it, a sieve cylinder, a hollow shaft enclosed in it with holes on which abrasive wheels are fixed, between with which mesh shells are installed, and the sieve cylinder has a helical stamping located obliquely to the generatrix of the sieve cylinder. Moreover, microwave generators are installed at the entrance to the working area of the machine.

As a rule, in small-sized grain processing lines, husking-grinding machines are installed after the breaking bins, where the grain enters after hydrothermal treatment, carried out in moisturizing machines, in which water is added to the grain and mixed with an auger. In this case, the amount of water is automatically adjusted depending on the amount of grain entering the machine. This system is simple and works quite efficiently with urban water supply networks. In rural conditions, the water pressure in the supply pipe is not constant and often varies within different limits. In this case, the calculated ratio of water to grain is violated, as a result of which, the moisture content of the grain entering the hopper for smoothing does not always correspond to the norm. And if insufficient moisture can be eliminated by re-moistening, then excess humidity is difficult to reduce, since drying lines are not provided in the production lines after the shelter bins. This leads to a decrease in the productivity of the entire line and increased humidity of the final product (flour, cereals, animal feed).

In FIG. 1 shows a peeling-drying machine with microwave radiation, a general view.

In FIG. 2 shows a sieve cylinder (detail of position 5 see FIG. 1).

The microwave drying and drying machine consists of a casing 1, a loading pipe 2, an exhaust pipe 3, a drive 4 installed in a housing 1 coaxially with it, a sieve cylinder 5 with an inner rough surface, a hollow shaft 6 with openings enclosed in it, which are fixed along the shaft 6 horizontally abrasive circles 8, between which mesh shells are installed 9. The sieve cylinder 5 has a stamping 10 in the form of a helical line, located obliquely to the generatrix of the sieve cylinder. On shaft 6 is a built-in fan. 11. At the entrance to the working area of the machine installed microwave generators 7.

The drying and drying machine with microwave radiation operates as follows.

The drive 4 through the V-belt drive informs the rotation of the hollow shaft 6 and the abrasive wheels 8. The feedstock (grain) to be processed is fed through the loading pipe 2 into the working area between the rotating abrasive wheels 8 and the stationary screen cylinder 5. Due to the intensive friction against the stationary screen cylinder 5 on the one hand and rotating abrasive wheels 8 on the other, when the raw materials move, the upper shells of grain are separated, the bulk of which is removed by the aspiration system of the machine. As the grain passes through the working space, the stamping 10 of the sieve cylinder 5, made in the form of a helix, makes it move inside the machine in a spiral, which improves mixing of the layers of grain, particles of exfoliated shells are more quickly removed through the perforation of the sieve cylinder 5 and increase the time that grain is inside the machine .

The microwave radiation generated by the generators 12 acts on the grain in the working area and heats it. The air sucked in by the fan 11, built into the machine body 1, passes inside the hollow shaft 6, cools the infrared emitters 7, and heats up and flows through the holes of the hollow shaft 6 into the drying zone, providing convective heat and mass transfer and moisture vapor removal, and is removed through an aspiration system cars. Having reached the end of the machine, the grain enters the exhaust pipe 3, from where it is unloaded.

The proposed peeling and drying machine allows you to maintain the estimated performance when processing grain with high humidity, dry it and disinfect.

Claims (1)

Microwave radiation peeling and drying machine, comprising a housing with loading and exhaust nozzles installed in the housing, a sieve cylinder coaxially with it, a hollow shaft enclosed therein with holes, onto which abrasive circles are fixed, between which mesh shells are mounted, and the sieve cylinder has a stamping in the form of a helix, located obliquely to the generatrix of the sieve cylinder, characterized in that the microwave radiation generators are installed at the entrance to the working area of the machine.

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