| 摘要 |
<p>A perforated plate (26) of a fluidized bed apparatus (1) includes a flanged upper perforated disk (31) formed by fixing a wire net (35) to a flange member (34), a disk-like lower perforated disk (32) having vents (32a), and a support flange (33) including a ring portion. (36) and a sealing side wall (37) in which a perforated disk housing portion (39) is formed on the inside of the sealing side wall (37). The perforated plate (26) is connected to a raw-material-vessel container (7) through intermediation of a sealing material (41) held in close contact with an upper end portion (37a) of the side-wall portion (37). The perforated plate (26) is fit-inserted into the perforated disk housing portion (39), and outer peripheries of the upper perforated disk (31) and the lower perforated disk (32) are covered with an inner wall (37b) of the sealing side wall (37). The sealing material (41) is held in close contact with an upper surface (34b) of the flange member (34), and the perforated plate (26) is housed in an air-tight state in the perforated disk housing portion (39). The upper perforated disk (31) and the lower perforated disk (32) in the perforated disk housing portion (39) can be easily ejected by a perforated-plate ejection mechanism (71).</p> |
