SU25904A1 - Rotary hearth dryer - Google Patents

Description

The invention relates to a dryer provided with a rotating hearth in the form of a lattice disk.

In the heater of the proposed dryer, the smoke channel is divided into two branches, converging towards the hog, and the air channel consists of interconnected concentric chambers — outside and inside the smoke channel.

In the drawing of FIG. i-depicts a vertical longitudinal section of the dryer; FIG. 2 - vertical cross-section; FIG. 3 - horizontal section along the heater; FIG. from above.

The dryer consists of two parts. In the lower part of the heater are air and smoke passages; To prevent the passage of smoke into the second part of the furnace, the smoke channel is above blocked with stoves. The smoke channel itself consists of a series of chambers that serve to lengthen the course of hot gas, which increases heat transfer.

The short circuit gases of the furnace 14 enter two branches 1 and 2, which pass into the common bora 3, from where they are sent to the pipe.

External air through the opening 4 enters the air chamber 6 and through the opening 5 into the inner annular chamber 7.

In the air chambers, a masonry was made, like heat exchangers, after which heated air enters the upper part of the dryer; here a lattice circle 8 passes over the air chambers on which the objects to be dried are placed. This Kpyi has the ability to rotate. The rotation speed is chosen so that s & one turn of the circle could produce a complete drying of the object.

The hot air, together with the water vapor, is exhausted through a pipe 9 located at the top of the dryer. T hectares are determined either by fan setting or coarse attachment to the hog.

The casing of the top of the dryer is made from sheet iron, which is then lined with insulating material.

The casing has a number of windows 13, which are sealed during normal operation. Their purpose is to enable, in case of damage to the rotary device, unload from the dryer and thereby save dried objects from high temperature.

The loading Yun discharge window 11 is located in a row, and there is a flap 12 at the discharge window, which is not

allows the object to undergo drying in the second channel, according to the circular shape of the plan

ricno.Idries, divided into two half-rings

The subject matter of the invention. whereas the air duct is from

Dryer with rotary hearth, separate chambers; chambers-6 from the outside are smoky with the fact that the flue-tube heater and chamber 7 and chamber 7 are inside it.

branches 1 and 2., descent to boar 3,

between them concentrates

fig I