SU1562643A1 - Apparatus for thermal treating of materials - Google Patents

Abstract

The invention relates to a drying technique and can be used for drying bran. The purpose of the invention is to reduce specific energy consumption and increase operational reliability. The apparatus for processing bulk materials contains a bunker 4 with a level control of bulk material, filtering blocks 5, an outlet funnel 6 with a gas distribution grid 14, a sluice gate 24 and a branch pipe 13 with exhaust air spent in section 2 of the heat carrier drying under the grid 14. Cooling section 3 is connected with a hopper 4 and filtering units 5 through a pipeline 19. 3 sludge.

Description

The invention relates to a drying technique and can be used for drying bran in the production of premixes.

The aim of the invention is to reduce specific energy consumption and increase operational reliability.

FIG. 1 shows the apparatus, the general view; in fig. 2 - node I in FIG. one; in fig. 3 - boxes for the supply of coolant with an individual blower and heating elements.

The apparatus consists of a housing 1, inside which there are drying section 2, cooling section 3, receiving hopper 4, filtering blocks 5, exhaust funnel 6 and air ducts 7 connected to individual blowers 8. Air diffuser 9, which is with the upper part of the ducts 7 are provided with guide plates 10 fixed on them and arranged parallel to the longitudinal walls of the housing 1. The heating elements 11 are placed under the air distribution grilles 9 directly. In the air cows 7 of the drying section 2 . The latter was sealed relative to the cooling section 3 by the sluice gate 12 and connected by an additional nozzle 13 to the outlet funnel 6 of the receiving hopper 4. The outlet funnel 6 is provided with a gas distribution grill 14 located along its contour with a gap. The receiving hopper 4 is equipped with flaps 15 associated with prefabricated shields 16, each of which is made of perforated plates 17 and mounted freely on horizontal axes 18 inside the receiving hopper 4. The cooling section 3 is connected by pipe 19 through the nozzle 20 and the valve 21 to a bunker 4 and filtering units 5. The receiving hopper 4 is equipped with a loading lock gate 22 and a branch pipe 23 mounted on its upper part in the center. Outlet funnel 6 is equipped with a discharge gate valve 24 installed in

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its lower part. Each individual blower 8 is equipped with a control valve 25. At the exit of the apparatus, a lock gate 26 with nozzles 27 is installed. The filtering blocks 5 are connected to the atmosphere by an exhaust valve 28.

The apparatus for the heat treatment of materials works as follows.

A flow of bulk material is directed to the inlet 23. The sluice gate 22 uniformly feeds it into the receiving hopper 4 and the funnel 6. When the bulk material reaches a predetermined level, the sluice gate 24 is turned on and the individual blowers 8 of sections 2 and 3 and the sluice gate between them simultaneously turn on and then the sluice gate 26 for discharging the bulk material from the apparatus. By the blowers 8, the air is supplied to the air ducts 7, where it is heated by contact with the heating elements 11, the air distribution grilles 9 and the guide plates 10, as well as by heat radiation. Passing through the air distribution grilles 9 of the air ducts 7, the air causes the bulk material to become fluidized, thereby drying it and transporting it along the cascade of the air distribution grilles 9. The movement of the bulk material takes place from top to bottom, and the movement is air from bottom to top, which additionally contributes to drying it when switching from one air box 7 to the other / i. The apparatus is operated with the open pipe 20 of the pipe 19. Exhaust hot air from the drying section 2 is fed to preheat the bulk material through the pipe 13, the outlet funnel 6 and the gas distribution grid 14 into the receiving bin 4. Pass through the layer of bulk material, the hot air is cleaned in the filter units 5 and is vented to the atmosphere with the exhaust open

the valve 28 in the upper part of the housing 1 Cleaning the filtering units 5 from dust is performed when the apparatus is in operation, short-term closure of the nozzle 20 with the valve 21. The apparatus operation is adjusted depending on the temperature of the heating elements 11 by supplying air to their blowers 8 with a certain adjustable opening of the dampers 25 of each blower 8, In the case of an excess of bulk material in the receiving hopper 4, the prefabricated shields with flaps 15 and plates 17 rotate and close its flow into the hopper 4 As far as The exit of the bulk material through the lock lock 9, its level in the bunker 4 is reduced and the prefabricated shields with the plates 17 occupy the position indicated in FIG. 2 solid lines, thereby adjusting its level within acceptable limits. To adjust the operation of the bulk material level regulator in the receiving bin 4, prior to the operation of the apparatus, a removable sealed hatch serves (Fig. 1, dash-dotted lines).

Claims (1)

Invention Formula An apparatus for heat treatment of materials, containing a vertical case with a material loading device in the upper part with an outlet funnel and heat exchanging sections arranged in the case, made in the form of ducts with individual heat carrier supply nozzles and with a perforated upper surface divided by vertical partitions into channels heat exchange elements located under it, characterized in that, in order to reduce the specific energy consumption and increase operational reliability when connecting enii kazh- dogo heat medium supply pipe to its blower housing is divided into drying sections and cooling 5 hermetically separated from one another by means of a sluice gate, the outlet funnel is fitted with a gas distribution grid, installed: -: Noah with a gap above the funnel walls, 0 and the drying section communicated with the exhaust funnel by means of an additional sluice gate and an additional pipe with an air duct draining the heat carrier from the drying section, the distribution grid of the funnel connected to the gap x, the material loading device is equipped with filtering units and a material level regulator in the form of a pair of dampers, Each of them is connected to the device of their rotation in the form of a set of perforated plates freely installed on the horizontal axis with the possibility of changing their length, and the cooling section is connected by a pipe to the material loading device and filtering units. five 23 W Phage. 2 Rig.z