| 摘要 |
FIELD: heating.SUBSTANCE: drier for bulk materials includes a rectangular section cabinet containing upper and lower compartments closed with doors; besides, compartments are connected in the left part with an air pipe and in the right part with a gas distributing grid. The left part of the upper compartment is provided with a high-pressure fan, the outlet of which is connected to the air pipe, and the right part of the upper compartment is provided with a 16-bladed rotor on the gas distributing grid. The gas distributing grid is made in the form of a round and has four radial zones, each of which corresponds to one or more sections of the rotor, an unloading zone, a pre-heating zone, a drying zone and a preparation zone for unloading. The unloading zone represents a radial cut-out equal to one rotor section, which is connected to an unloading hatch; the pre-heating zone is equal to two sections of the rotor and has 27 rows of holes with the diameter of 3 millimetres; the preparation zone for unloading is equal to one rotor section and has chaotically located holes with the diameter of 2 millimetres; the lower compartment of the cabinet is provided with an air heating heat exchanger with a heater installed in it; the loading hatch is made in the upper cabinet compartment above the section of the pre-heating zone, which is the first from the unloading zone; in the upper cabinet compartment there is a hole for ambient air intake and outlet of moistened air. The drying zone consists of 8 rows of holes with the diameter of 4 millimetres each with the distance between centres of adjacent holes of 10 millimetres, at the distance between rows of holes of 12 millimetres; with that, one external and two internal rows are located in close proximity to external internal edges respectively of the gas distributing grid.EFFECT: providing complete rotation of bulk material in a drying zone.2 dwg |
