A DRYER FOR FREE-FLOWING DIELECTRIC MATERIALS

摘要

The dryer comprises a multimode resonator chamber supported rotatably at uprights (13) by means of a rotation device and made of two truncated cones (1,2) of different heights and a cylindrical section (3) which connects the cones to each other at their larger bases, a rotational vacuum tight joint (11) to a microwave energy waveguide input (12), a chamber blowdown device with an air duct (15), and a chamber volume pumping out device with a dielectric duct (18) extending from a chamber bottom (17) edge along its axis through a rotational vacuum seal (16) near the bottom plane and bent upwards relative to the horizontal base (14) of the dryer, a horn antenna (8) disposed between the rotational vacuum seal (11) and the higher truncated cone (1) the horn of which antenna being closed, at the output, by a radio transparent partition (9) with a through hole (10) in its center contactless position pickups (.23) disposed at uprights (13) near the horn antenna (8). The chamber being supported at the uprights (13) at an angle between 8- and 10- with the horizontal base (14). Furthermore, the cylindrical section of the chamber (3) is provided with a charging- discharging hatch (4) having a cover (5) and a vacuum and microwave seal (7). The height ratio of the higher truncated cone (1) to the cylindrical section (3) to the lower truncated cone (2) of the resonator is 0.75:1 :0.5 and an angle between the axis and generatrix of the higher truncated cone (1) being between 8- and 10-. The air duct of the chamber blowdown device (15) extends into a horn cavity of the horn antenna (8) near the radio transparent partition plane (9).