SU1241043A1 - Apparatus for heat treatment of loose materials - Google Patents

Description

The invention relates to devices for drying bulk materials and can be used in the food industry.

The aim of the invention is to improve the quality of drying and cooling of the material and the intensification of heat treatment.

FIG. 1 shows the apparatus, a general view; in fig. 2 - dust separator of the upper sections of the chambers, general view; in fig. 3 shows section A-A in FIG. one; in fig. 4 — node I in FIG. one; in fig. 5 and b - node II in FIG. one; in fig. 7 - telescopic plug with a handle of a manual gear-rack drive, general view; in fig. 8 - the same plan view; in fig. 9 - unit for connecting sections of the drying chamber.

The apparatus contains drying and cooling chambers 1 and 2, respectively, with gas distribution grids 3, a feeder 4, louvered air distribution ducts 5 with nozzles for supplying and discharging a high-temperature drying agent, a dust separator 6 with spiral channels 7 extending from the periphery to the center, a nozzle 8 for material withdrawal telescopic plug 9 and windows 10, water-cooled jacket 11 of the cooling chamber, discharge valve 12, vibration drive 13 of the drying chamber 1, flexible inserts 14, fixed supports 15, shock absorber springs Atory 16, frame 17 of the lower section of the drying chamber 1, dust collecting pocket 18, hinged shelves 19 with springs 20.

The device works as follows.

A wet granular material, such as granulated sugar, is fed into the upper section of the drying chamber 1 by means of a feeder 4 and moves in a dense layer along the louver surface of the air distribution duct 5 under the influence of a weight force. Inside the duct a high-temperature coolant with a temperature of 135-140 ° C is fed, which through the blinds, which prevent material from spilling inside the box, passes into the layer of material,

sews it and through the dust separator is removed from the apparatus. In the dust separator, under the action of centrifugal forces and expansion in the spiral channels 7, small particles of material fall out of the coolant flow and gradually accumulate in the dust collection pocket 18. At the moment when the weight of the precipitated particles exceeds the force of the springs 20, the hinge shelves 19 open, small particles are poured out of the pocket the gas distributor grate 3 of the second section of the drying chamber and the shelf 3 are closed. All the dried material from the first section goes to the same grid. In this section, the material is finally dried in the fluidized bed. At the same time use the heat carrier with a temperature of 70-80 ° C. The dehydration efficiency is enhanced by the oscillating movements of the section created by the vibrodrive 13, mounted on the frame 17 of the section, which is installed with the help of spring shock absorbers 16 on the fixed supports 15.

The deposited material is reloaded into the cooling chamber 2 through a material outlet 8, equipped with a telescopic stopper 9. The material is unloaded by means of an overflow through the stub and through special windows 10, the living cross section of which is 0.08-0.10. The ratio of these flows, and hence the height of the layer, can be adjusted by the level of the telescopic plug in the nozzle installed with the help of a manual gear-rack-and-pinion drive.

The processing of the material in the cooling chamber is carried out similarly to the drying, i.e. in two stages; in the dense layer in the first section and in the fluidized bed in the second, and the cooling efficiency increases due to the contact of the fluidized bed with the surface of the water-cooled jacket 11. The cooled material is also unloaded through the pipe 8 using a sealing discharge valve 12.

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FIG. 7

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FIG. 2

FIG. 3

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Compiled by E. Nikulin

Editor K. VoloschukTehred I. VeresKorrektor O. Lugova

Order 3476/34 Draw 634 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (3)

1. DEVICE FOR THERMAL PROCESSING OF BULK MATERIALS, mainly granulated sugar, containing chambers installed one above the other with autonomous supply of a gaseous agent into each of them through a perforated surface and with material inlet and outlet nozzles, characterized in that, in order to improve the quality of drying and cooling of the material and intensification of processing, each chamber is made two-sectional in height with an autonomous supply of a gaseous agent in each section, the perforated surface of the upper sections of the chambers Execute the tambour boxes to form a triangular cross section provided with the base pyleotd ate Ithel cavity which is divided by partitions into the spiral channels, expanding in the direction from the periphery to the center. 2. The apparatus by π. 1, characterized in that the outlet pipe of the material is made with windows, the live section of which is 0.08-0.1, and is equipped with a telescopic plug. _a 3. The apparatus by π. 1, characterized in that S that the lower chamber is equipped with a cooling jacket, and the upper one is equipped with a vibrator. SU "1241043