SU1771581A2 - Installation for drying grain-like products - Google Patents

Description

The invention relates to a technique for drying bulk cereal products.

The aim of the invention is to improve the quality of drying and increase productivity due to more intensive processing of the product by the drying agent.

On Fig, 1 shows the installation in section; in FIG. 2 - installation, plan view, section; in FIG. 3 - installation, plan view.

The apparatus for drying grain products includes a vertical cylindrical permeable drying chamber 1 located inside a coaxially permeable drying agent chamber 2 with a drying agent supply valve 3 (not shown). The control valve 3 consists of a baffle plate for changing the volume of the chamber 2, a steering wheel, a worm shaft, a fixed nut, a socket in which a support disk is installed, and the socket is rigidly connected to the baffle disk.

A socket with a bearing 4 is mounted on the floor of the drying chamber 1, into which a vertical screw agitator is mounted 5. The agitator shaft 5 is connected to the reducer 6. In the drying chamber 1, there is a block duct located between the walls of the drying chambers and made in the form of four vertical ducts 7 mounted symmetrically relative to the axis of the chamber 1 and connected by horizontal permeable ducts 8 to the chamber 2 of the drying agent.

In order to intensify the processing of grain by combining contact and convective drying, the block duct is equipped with hermetic caps 9 installed in the upper part of the vertical ducts.

Vertical screw agitators 5 are installed between the vertical ducts 7 symmetrically with respect to them.

The chamber 2 of the drying agent is equipped with a guide apron, and in the lower part has an unloading hopper with a discharge neck.

1771581 A2

The plant is loaded with grain by means of a loading vertical device consisting of an endless belt with buckets. The tape goes around the drive and tension drums, mounted at the extreme points of the conveyor.

The casing of the drying installation is mounted on the bearing supports. A belt conveyor is installed under the discharge neck for unloading dried grain.

A drying unit operates as follows.

The grain through the buckets is loaded from above into the space of the drying chamber 4 between its walls and the walls of the chamber 2 of the drying agent. After loading the drying agent into the chamber 2 and the block duct, the drying agent is supplied at a temperature of 60 ° C and screw agitators 5 are turned on, which intensively mix the grain in the vertical and horizontal planes 20. The drying agent under pressure enters the central vertical chamber of the drying agent, into the vertical ducts and into the airtight caps, heating their walls, and the latter transfer heat to the grain, and the drying agent 5, after exiting the airtight caps under pressure, penetrates the loose grain layer and removes moisture from it leaving the atmosphere with a minimum temperature.

At the end of drying, the throat opens by opening the throat, and the grain, pouring over the apron in the discharge hopper, flows down to the conveyor 10, which transports it to the final cleaning units.

Claims (1)

Installation for drying grain products by ed. St. No. 1707463, which is characterized in that, in order to intensify the processing of grain by combining contact and convective drying, the block duct is equipped with hermetic caps installed in the upper part of the vertical ducts.