Center transmission mud scraper for vertical flow type sedimentation tank

The utility model discloses a center transmission mud scraper for a vertical flow type sedimentation tank, which comprises a cross walking board frame and a shaft penetrating hole arranged in the middle of the cross walking board frame, and four hydraulic cylinders are fixedly arranged on the periphery of the shaft penetrating hole. The extension amount of the pull rod is flexibly adjusted by adjusting the turn buckle, so that the adjustment of the horizontal inclination angle of the sludge scraping rake is realized, the sludge scraping rake is always parallel to the side wall of the sludge bucket and perfectly attached to the bottom wall of the sedimentation tank, the sludge scraping is more thorough, and the sludge scraping effect is obvious; when more sludge exists in the sedimentation tank and the rotating resistance of the sludge scraper is larger, the speed reducer and the output shaft can be lifted upwards to finally drive the sludge scraping rake to move upwards to be far away from the side conical su