Water treatment sedimentation tank and sludge scraper

• Main Author: NANHUA DING
• Format: Patent
• Language: English
• Published: 15.11.2006
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The utility model relates to the improvement of a water treatment sedimentation tank and rotary sludge scraper, which is characterized in that the cross section of the sedimentation tank is a circular externally tangent square which is provided with a rotary sludge scraper and the long side of the square is equal to the diameter of a circle. At least one end of a rotary scraping arm is obliquely hinged with a parallelogram mechanism which is about parallel to the tank plane, a toward bar member of the parallelogram scraping arm is provided with a sludge scraping device and one bar member of the parallelogram is maintained to deform outwards in radial direction under the action of the preset outer force to make the outer end of the toward bar member of the parallelogram scraping arm always abutted on the square tank wall and make the radial reciprocating motion following the rotation. The sedimentation tank of the utility model has the advantages of the sedimentation tank and the rectangular sedimentation tank, and the defects of the circular sedimentation tank and the rectangular sedimentation tank are overcome. A four link member on the tail end of the sludge scraper can run according to the square track and can scrape the sedimentation sludge on four corners of the square, and the sludge scraping bottle neck of the square sedimentation tank is solved.