SU1135981A1 - Drying unit - Google Patents

Abstract

DRYING INSTALLATION, containing a heat-insulated chamber with a drying agent supply pipe in the lower part, and mesh conveyors with a length decreasing from the floor to the train, which are characterized by the fact that, in order to intensify the drying process by creating optimal parameters of the drying agent along the chamber height The camera has the form of a confuser, in which the two opposite sides are made in the form of isosceles trapezoids with an angle at. . base 36-54, located parallel to each other. and perpendicular to the base of the chamber, and the other two sides are made in the form of TF mogons.

Description

The invention relates to a drying technique and can be used in agricultural production, for example, for drying hop cones, as well as in food, chemical and other industrial fields for drying similar materials. A ventilating device containing an exhaust duct in the form of a confuser, in which the two opposite sides are parallel to each other, is known in the form of equally femoral trapezoids and perpendicular to the base of the duct L1. The disadvantage of such a device is its unsuitability for drying materials. There is a lot of Russian cable conveyor belt dryer with conveyors of decreasing length from Russian to Russian. The gas supplying boxes are located under each branch of conveyor t2. The disadvantage of this dryer is the difficulty of servicing. The closest to the invention is the drying unit, which contains a heat insulating chamber with a drying agent supply pipe in the lower part and a mesh conveyor with a decreasing length from Russ to Russ H in the chamber. The drawback of the known dryer is the inability to provide optimal conditions drying according to the speed of movement, temperature and relative humidity of the drying agent at the same time and in accordance with the changing humidity of the material, and the control of the technological process of drying rudneno. The aim of the invention is to intensify the drying process by creating optimal parameters of the drying agent for the height of the chamber. This goal is achieved by the fact that in a drying unit containing a heat-insulated chamber with a staple for supplying a drying agent in the lower part and wire mesh conveyors with a length decreasing from Rus to Rus, the chamber looks like a confuser, in which two opposite sides are made the shape of an isosceles (traction paths with an angle at the base of 35-54 °, arranged parallel to each other and perpendicular to the base of the chamber, and the other two sides are made in the form of rectangles. Fig. 1 shows a dryer On the installation, general view; in Fig. 2, section A-A in Fig. 1; in Fig. 3. The chamber: The drying installation consists of a heat-insulated chamber 1, having the form of a confuser, with two sides 2 and 3 parallel to each other isosceles The cameras are perpendicular to the base, and the other two are 4 and 5. Rectangular, attached to the larger base of the confuser at an angle of 36-54 °. the sides and which is intended for moving material from the loading apparatus 7 to the discharge 8. In order to feed the drying medium into the chamber serves as a conduit 9 and a centrifugal fan 10, and its removal is effected by a fan 11. The installation includes a gate valve 12, as well as pitched boards 13 and restrictive plates 14, which ensure the direction of transshipment from one conveyor to another. Drying installation works as follows. The material pre-leveled in a layer across the entire conveyor belt is fed to the upper conveyor 6 by the loading device 7 using a sliding gate 12. After the drying on the upper conveyor is completed, the material is poured onto the second, then the third, etc. to the unloading device 8. Each of the conveyors is moving in the opposite direction to that of the previous one. The drying agent is fed into the chamber under the lower conveyor of the dryer by the centrifugal fan 10, and removed from it by the fan 11. The chamber, having the form of confusor, provides the specified mode of movement of the drying agent, since povitsya. When a drying agent passes through a layer of material, it takes away a part of the moisture from them and at the same time its relative humidity decreases and the temperature decreases. By this

optimum conditions for drying the material are achieved at the height of the chamber in accordance with its changing humidity, which allows to intensify the process and ensure high quality of the dried product,

The table shows the comparative performance of the drying unit at different angles of inclination of the side walls of the drying chamber.

The table shows that the optimum angle of inclination of the side walls of the drying chamber to the horizon is within 36-54®, since at smaller angles of inclination the productivity of dry material, kg per 1 m area of the protractor, mesh

0.7 0.9 1.0

1.1

1.13

1.16

1.20

1.25

the killer is less than 1 kg / m and the quality of the finished product corresponds to the second grade, and at large tilt angles the productivity of the drying unit increases slightly, the specific capital costs increase and the finished product again corresponds to the second grade.

The proposed drying unit will allow to intensify the drying process by creating optimal parameters of the drying agent along the chamber height.

Hop quality according to GOST

21996-76, variety

I I and

And 1 I and

four,

five

.

Claims (1)

A DRYING UNIT containing a heat-insulated chamber with a nozzle for supplying a drying agent in the lower part and mesh conveyors with belt lengths decreasing from tier to tier, characterized in that, in order to intensify the drying process by creating optimal parameters of the drying agent along the height of the chamber, the chamber looks like a confuser, in which two 1 opposite sides are made in the form of isosceles trapezoids with an angle at the base of 36-54®, parallel to each other. and perpendicular to the base aniyu camera, the other two sides are designed as direct $ rectangles. Sae Joint venture C0 QO 1 1135981 2