The utility model discloses an old pond float coal recovery device for a scraper conveyer. Conveyor comprising a rear scraper, coal collecting dragging plate, sliding grooves are formed in the upper end and the lower end of the rear end face of the rear scraper conveyor respectively. A sliding piece capable of sliding and moving in the sliding groove is embedded in the sliding groove. The upper end and the lower end of the sliding piece are clamped in the sliding grooves. The middle part of the sliding piece is fixedly connected with a semi-annular clamping ring; an upper clamping plate and alower clamping plate are arranged on the upper side and the lower side of the front end of the coal collecting dragging plate correspondingly. An annular clamping ring is fixedly arranged on the upperclamping plate, the semicircular clamping ring is connected with the annular clamping ring through a shackle, effective recovery of float coal is achieved through the device, the recovery device canbe connected with a scraper conveyor for use at any time and is not limited by position conditions, and the utilization rate of the device is increased.