SU497456A1 - Plant for drying bulk materials in a vibro-caking layer - Google Patents

Description

one

The invention relates to a drying technique and can be used in the chemical, food and other industries.

A known installation for drying sonar materials comprises a shaft with tenlo exchange surfaces inside for conducting material heating and a vibrator mounted on a plate to which rods are attached, placed between the heat exchanging surfaces.

However, in such an installation, the particles of the material in the layer are poorly mixed, and the structure of mounting the rods and heat transfer surfaces is not reliable.

The purpose of the invention is to intensify the drying process and increase reliability.

This is achieved by attaching to the slab, perforated, with the help of rods, a gas distribution grid vertically movable, provided peripherally with spring-loaded stops with rollers interacting with the walls of the shaft.

The drawing shows schematically the described installation. The installation comprises a shaft 1 with loading 2 and unloading 3 devices, a gas exhaust pipe 4, a perforated plate 5, a vibrator 6, rods 7, heat exchange surfaces 8, a gas distribution grid 9 with stops 10 and baffle plates 11.

The material being dried is fed into mine I by means of a loading device 2. The material is dried in a fluidized bed created by a coolant flowing through the gas distribution grid 9. The material is also heated by a conductive method using heat exchange surfaces 8 fixed to the rods 7. The dried material is removed from the shaft 1 through the discharge device 3. The gas distribution grid 9 with the help of rods 7 is attached to the perforated plate 5, on which the vibrator 6 is installed, and together with 5 soverschaet cast oscillation in the vertical direction. Spring-loaded stops 10 with rollers sliding along

the walls of the shaft 1, serve to prevent the lattice 9 from jamming in the shaft 1 during temperature fluctuations.

The exhaust coolant leaves the layer through the holes in the plate 5 and is removed from

mine 1 through the pipe 4.

Pick brushes 11 serve to prevent material from spilling into the gap between the gas distribution grid 9 and the walls of the shaft 1.

Through the use of a fluidized bed and mechanical vibrations of the heat exchange surfaces 8, the material is intensively mixed and heat and mass transfer is improved. The mixing of the heat exchange surfaces 8 on the rods 7 between the plate 5 and the gas distribution grid 9 reduces the effect of vibrating alternating loads on the heat exchange surfaces 8, which increases their service life.

Subject invention

A plant for drying bulk materials in a vibrocall, a layer containing 1, and a shaft with

heat exchanging surfaces inside for conductive heating of the material and a vibrator mounted on a plate, to which rods are attached, placed between the heat exchange surfaces, is different from the fact that, in order to intensify the drying process and increase reliability, the plate is perforated and to the plate with the help of the rod and attached movable in the vertical direction gas distribution grid, equipped with peripheral spring-loaded stops with rollers that interact with the walls of the mine.