SU1562642A1 - Installation for drying loose materials - Google Patents

Abstract

The invention relates to a drying technique and can be used in the food industry. The purpose of the invention is to intensify the drying process, improving the quality and expanding technological capabilities. In the case of a cylindrical or prismatic shape in the Central zone 5 is placed the hopper 16 of the dried material. In the peripheral zone 6, the drying sections 7 with perforated grids 10 and transport chambers 8 equipped with augers 24 are placed in alternating order. The bulk material is repeatedly dried in a fluidized bed in sections 7 and in the transport chambers 8. 1 zp f-ly, 6 ill.

Description

The invention relates to the technique of ears and can be used in the search industry, in particular for drying the seeds of grapes.

The aim of the invention is to intensify the drying process, improve the quality and expand technological capabilities.

FIG. 1 shows the installation, general view; FIG. 2 shows a housing, an axial section; in fig. 3 - section AA in FIG. 2 (cylindrical body); in fig. 4 - the same prismatic case; in fig. 5 - transporting chamber; in fig. 6-- loading window transporting amers.

The plant for drying bulk materials comprises a housing 1, a califer, 2, a fan 3, a cyclone 4, a central 5 and a peripheral 6 zone, drying sections 7, conveying chambers 8, a partition 9, a gas distribution device in the form of perforated gratings 10, and a heat carrier supply pipe 11 , separation zones 12, nozzles 13 of the heat carrier discharge, section 14 and discharge windows 15, dried material hopper 16, conical bottom 17, cover 18, louvre shutter 19, drive 20, chain gear 21, loading device 22 , damper 23 and augers 24.

Drying installation works as follows.

From the loading device 22, the bulk material (seeds) is evenly fed to the first drying section 7 as the material moves, underneath the perforated grill 10 of which hot air is heated through the nipple 11 heated in the heater 2. Under the influence of the upward flow, a fluidized layer of material is formed. The material, dried to a certain moisture, from the first section of the material movement section 7 enters through the loading window 14 into the transporting chamber 8 next to it, along the material movement direction, in which the screw 24 rotates from the actuator 20 and lifts the material upwards. When lifting, the heated material does not come into contact with air (coolant) and, as it were, is tracked when moving in the closed space of the transport chamber 8. At the same time

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Moisture is transferred from the depth of the layers to the surface of the material at 40-60 ° C. Then the material enters the next drying section 7 through the discharge port 15, where it is also subjected to drying in the fluidized bed. Thus, the material to be dried is repeatedly subjected to drying in the suspended layer and bleaching in the transport chambers 8 in a sequential-step working cycle. From the latter, in the course of the movement of the material of the transport chamber 8, the dried material enters the hopper 16, where it cools to the required temperature. Exhaust air, saturated with evaporated moisture, is removed through nozzles 13

20 to cyclone 4 where dust and mist are precipitated. As the material shrinks, the fluidization height naturally increases. Therefore, in each conveying chamber, the cross-section of the loading window 14 is adjusted by means of the damper 23. Adjusting the section of the loading window 14 is necessary for drying different sizes and densities of materials.

Q The invention allows to intensify the drying process, improve the quality and expand the technological capabilities of the installation.

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Claims (2)

1. A plant for drying bulk materials, comprising a housing with a drying chamber provided with a gas distributing device and heat exchange inlet and outlet connections placed respectively in its lower and upper parts and transporting cylindrical chambers equipped with augers, characterized in that intensification of the drying process, improvement of the quality and expansion of technological capabilities; the casing is made of a cylindrical or prismatic shape and is additionally equipped a partition that repeats the shape of the housing and divides the latter into central and peripheral zones, with the bunker of the dried material located in the central zone and the drying chamber consisting of sections in alternate order with the transport chambers located in the peripheral zone; drying sections are interconnected by means of loading and unloading windows placed on opposite sides of the transport chambers, respectively, in their lower and upper parts, and the latter in the course of movement 15626426 the material being dried, the screening box is connected to the material bin to be dried. 2. Installation according to claim. Characterized in that the loading windows of the conveying chambers are made of variable cross section. CPU2.1 22 s- t Compiled by I.Isachenko. Editor I.Shmakova Tehred.K.Didyk | Proofreader N.Korol Order 1052 Circulation 586 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 FIG. 6 Subscription