| 摘要 |
PROBLEM TO BE SOLVED: To provide a dust removing device of excellent corrosion resistance and long life. SOLUTION: This dust removing device 20 is rotatively driven by a pair of main sprockets 22 provided on the surface of the water part by connecting with a drive source 24. Main chains 34 are mounted on the sprockets 22, the lower end part is let flow in the depth part of the water, a rake and a screen are integrated into a rakescreen 38, it is provided at every pitch of the chains 34 so as to oppose to the wafer flow direction to contact the lower part with the water bottom. Scrapers 44 are arranged on the sprockets 22 so as to bite in the rakescreen 38, and they are continuously circulatingly driven. Further, the dust removing device 20 constitutes the rakescreen 38 and the chains 34 out of plastics.
|
