DE73095C - Drying process and apparatus for carrying out the same - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The beet pulp to be dried or the otherwise moist material to be kilned is introduced through the funnel E into an oven built with hollow layers in between and in the same through automatically transporting drying trays P P ¹ , P ¹ P ² , P ² P ^3, etc. conveyed further in a slightly inclined direction from top to bottom, dried on these trays and automatically ejected as finished dry goods through the discharge chute M.

Hot gases are used for drying, which are driven into the drying oven from the side at A by pressing and carried on in the direction of the arrow from A to B through transverse channels CC ¹ C ² and 'sw below the terraced shelves and finally discharged into the chimney S at B will.

By means of a special side connection K connected to the heating pipe H and closed by means of a throttle valve, cold air can also be supplied directly to the heating gases, and in this way the temperature of the latter can be regulated as required.

For the quality of the dry material to be achieved, a further controllability and Uniformity through the mechanism of movement of the individual terraced groups Conveyor trays reached. At a lower temperature below the tray, the Time for the transport of the dry material through the apparatus by means of correspondingly slower ones The corridor of the transporting hordes is lengthened, in the other case this transport is accelerated.

The transverse heating channels C C C ' ² and sw are from the upper actual drying room, through which the material to be dried is transported to the shelves and in which the evaporation gases of the dry material are also led in an oblique direction from bottom to top to the chimney S through the rack belts are doubly closed without end, in that each time the lower, i.e. empty, half of these belts is exposed to the direct action of the heating gases in the channels CC ¹ and so on with each circulation and thus continuously replenishes the heat given off.

Claims (1)

Patent Claims: i. Drying process, characterized in that the dry goods on a series of endless transport cloths is guided along in such a way that at the transition points from one transport sheet to the other either through the dry material itself or through special, between the closing devices placed under the towels, The space traversed by the dry gases (hot smoke gases) compared to the space above the transport cloths Space is sealed, for the purpose of contamination of the dry material avoid direct contact of the heating gases with the dry goods.
2. A drying apparatus for carrying out the under i. characterized method, consisting of a number of terraced one above the other endless Transport cloths TT ¹ T ² , under which the drying gases, avoiding direct contact with the drying material, alternately stroking from one side of the stove to the other, in countercurrent move to the dry goods. For this purpose ι sheet of drawings.