The utility model relates to a single-tube suction mud scraper. It includes a central column installed in the sedimentation tank, a driving device, a working bridge and a sludge collection tube. There is a mud collection pit in the center of the bottom of the sedimentation tank. The sludge collection tube is installed above the mud collection pit. The center column is equipped with a vertical frame structure. The sludge collection tube is fixedly installed at the lower end of the vertical frame and one end of the working bridge. It is installed on the upper end of the sedimentation tank wall, and the other end is set on the upper end of the center column. The driving device is connected to the upper end of the vertical frame. One side of the sludge collection tube is connected with a mud scraper, and the other side is equipped with a mud suction pipe distributed at 180 degrees with the mud scraper. The upper ends of the mud scraper and the mud suction pipe are connected to the vertical frame through a pull rope. The utility model has a simple structure. The scraper arm is connected through a vertical frame, which improves the reliability and prolongs the service life of the equipment. By using the scraper to cooperate with the sludge suction pipe, the activated sludge and the inert sludge can be collected separately, thereby improving the sludge treatment effect.
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