SU907367A1 - Fluidised bed dryer for granulated materials - Google Patents

Description

(54) DRYING LAYER FOR GRANULAR MATERIALS

one

This invention relates to a technique for drying granular materials and can be used in the chemical, piped, and other industries.

A fluidized bed dryer for pasty and dispersed materials is known, comprising a chamber with a discharging device and a rotating disk with blades on top and scrappers on bottom surfaces 1 placed on a shaft.

The disadvantage of the dryer is low operational reliability due to the possibility of a disk jamming due to the ingress of fine particles of material into the gap between the end of the disk and the walls of the chamber.

The purpose of the invention is to increase operational reliability.

The goal is achieved by the fact that the edge of the disk is made pointed at an angle of 5-87 °, and a dust collector and a leak collector are connected to the bottom of the chamber with diametrically opposite sides, the latter being located on the side opposite to the unloading device.

FIG. 1 schematically shows the proposed character; in fig. 2 — node I in FIG. one.

The suschilka contains ka.meru 1 with the bottom 2, the unloading device 3. To the bottom 2

 an injector 4 and a dust collector 5 are connected, the latter being located on the side opposite to the unloading device 3. Inside the chamber there is a disk 6 with vanes 7 on the top and scrapers 8

10 on the bottom surfaces. The disk 6 is made with a pointed edge at an angle of J. 5-87 °. Suschilka works as follows. When the disk 6 is rotated, the blades 7, the raid on the granular material, cause it to oscillate, which adds up to a common rotational movement of the material relative to the vertical axis of the chamber 1. As a result of intensive movement, the material is heated due to the heat generated by

20 mutual friction and friction against the walls of the chamber 1 of material particles, which accelerates the process of the substance and ensures uniformity of humidity throughout the entire volume of the material being dried.

Claims (1)

Claim A fluidized bed dryer for granulated materials containing a chamber with a discharge device and a rotating disk placed inside the chamber on the shaft with blades on the top and scrapers on the bottom surfaces, characterized in that, in order to improve operational reliability, the edge of the disc is pointed at an angle of 5—87 °, and a dust collector and a leak collector are connected to the bottom of the chamber with diametrically opposite sides, the latter being located on the side opposite to the unloading device.