| 摘要 |
PURPOSE: To keep a rubber member be closely adhered to a bottom of a sedimentation tank even when the rubber member is worn out by pressurizing the rubber member to the bottom of the sedimentation tank with a scraper of a sludge collector. CONSTITUTION: The scraper of a sludge collector comprises a supporting member (21) fixed by a frame of the sludge collector, a wear-resistant rubber member (22) contact with a bottom surface of a sedimentation tank to scrape sludge, a steel plate member (23) fixing the rubber member with an engaging member and a connecting unit (25) mounting the steel plate on the supporting member to keep the steel plate member being pressurized to the bottom surface.
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