| 摘要 |
PURPOSE:To reduce air passing resistance by automatically and rapidly removing the greater part of dust separated at the surface of a partition wall, by withdrawing dust-containing gas separated by the partition wall to recirculate the same to the inlet part of the partition wall. CONSTITUTION:A gas intake pipe 8 is penetrated into a hopper 5 in order to withdraw dust-containing gas from the lower parts of porous tubular bodies 2. The intake pipe 8 is connected to the suction port of a blower 9 and further connected to a dust-containing gas introducing pipe 11 connected to a dust- containing gas introducing port 4 from the emitting port of the blower 9 through a recirculation pipe 10. By operating the recirculation route of dust-containing gas, dust-containing gas also flows in the lower part of the porous tubular bodies 2 and, therefore, the dust adhered to the lower inner surface of each porous tubular body 2 is also easily fallen in the hopper 5. It is effective that the recirculation amount of dust-containing gas is adjusted to 5-25% of the feed-in amount of dust-containing gas.
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