SU1146529A1 - Multisection continuous-belt drier - Google Patents

Abstract

MULTI SECTION BELT DRYER, containing a perforated perforated conveyor and mechanical tedders installed in its form as rotating perforated cylinders with inclined blades, characterized in that, in order to improve the quality of drying, each agitator is equipped with a layer of a piece of a piece of a piece of a chimney layer and a hinged blade. and the blades of the latter are hollow with perforated working surfaces and.

Description

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Figure 1 Material The invention relates to a technique for drying capillary-porous colloidal thermolabile materials, such as, for example, raw cotton and short seed heap, grain and grass seeds, small-sized potatoes, oBoupi, etc. The aim of the invention is to increase the drying quality. Pa figs. 1 is a diagram of a multi-section belt dryer in FIG. 2 - the agitator of the section in FIG. 3; the assembly providing rotation and supply of the heat transfer medium to it. The dryer includes a housing 1 in which a perforated conveyor 2 is located, nozzles 3 for entering the heat carrier UND: working conveyor branch of the agitators 4 in the form of cylinders with perforated side surface 5 and hollow blades 6 located on it with perforated working surface 7, one on the agitator freely open 1 ESC in the lowest position of the valve 8, pipes 9 for introducing additional coolant flow into the internal cavity of the agitator, sealing devices 10 for pipes for introducing additional flow a heat transfer fluid actuator 11 (gear) for imparting rotary motion agitator, baffle 12, nozzles 13 for barrier kami individual removal of spent heat transfer fluid zones suigilki, boot 14 and unloading device 15. The operation of the dryer is as follows. Wet material enters the loading device 14 into the dryer body 1, from there to the perforated conveyor belt 2. Moving along the dryer, the material enters the zone of action of the first agitator 4, which with the help of the blades 6 captures the material, lifts it up and moving over the perforated surfaces of cylinder 5 and 7. And the blade drops it back into the layer, but on the other side of the agitator. After moving in a dense layer, the material is then exposed to the next agitator, etc., until it leaves the twinkle through the unloading device 15. Randomly fallen small particles inside the agitator 4: The valve leaves the free-opening position 1 in the lowest position 8. The rotation of the agitator is performed by the drive gear 11. The operation of the drying unit is largely determined by the requirement of the material being dried and, for example, in the oscillating mode, is as follows. The heat carrier with the help of nozzles 3 is distributed over the zones of the dryer, limited by overflow. towns 12. Passage through the layer of material being dried, the coolant leaves the dryer through the pipes 13 with flaps. Additional coolant flows (cold air) are distributed over the agitators 4 by means of nozzles 9 with a sealing device 10. Thus, moving along the dryer, the material being dried is periodically heated in a dense layer and cooled by a mechanical pot. temperature) heat carriers allows for a very fine adjustment of the drying mode depending on the properties of the material itself. This raises its quality and makes the dryer more versatile - applicable to a wider range of drying objects. ,. The presence of partitions .12 excludes the ingress of a cold heat bath in the hot zone and vice versa. With the help of individual nozzles 13 with flaps, it is possible, as drying, to regulate the speed and humidity state of the spent heat transfer medium. Most importantly, compared to the known method, the use of the tedder surface is of utmost importance. In the proposed dryer, the material is processed due to the hollow blade 6 with perforated surface 7 for the entire period of its stay on the agitator 4. The supply of additional heat transfer agent directly to the agitator eliminates the energy required to overcome the resistance of the perforated conveyor belt. All this contributes to the intensification of the process with increased technical and economic indicators and improves the quality of drying.

FIG. 2

Claims (1)

MULTI-SECTION TAPE A DRYER containing a blown perforated conveyor and mechanical agitators mounted over its working branch in the form of rotating perforated cylinders with inclined blades, characterized in that, in order to improve the drying quality, each agitator is equipped with an end pipe for entering the coolant into the cylinder cavity, and the blades of the latter are made hollow with perforated work surfaces. 6Z59HT 7) 8 I