NOVELTY - A sludge stack dumper comprises a stander, a mixing oil cylinder, a supporting shaft, a big cart walking mechanism, a hook tooth chain-plate type sludge stack-dumping and throwing mechanism, and a drive mechanism; where the stander is installed on the big cart walking mechanism; the other end of the stander is connected with one end of the mixing oil cylinder; the other end of the mixing oil cylinder is installed on big cart walking mechanism; and by driving force of the mixing oil cylinder, the stander is capable of rotating on the big cart walking mechanism along with the supporting shaft.    USE - The sludge stack dumper is useful for sludge treatment.    ADVANTAGE - The sludge stack dumper has light weight, low energy consumption, and low production, operation and maintenance cost of the device. Moreover, the thickness of the dumped sludge can be 2 m. Additionally, compared with the current sludge stack dumping device having identical processing quantity, the sludge stack dumper greatly reduces occupied area.    DETAILED DESCRIPTION - A sludge stack dumper comprises a stander, a mixing oil cylinder, a supporting shaft, a big cart walking mechanism, a hook tooth chain-plate type sludge stack-dumping and throwing mechanism, and a drive mechanism; where the stander is installed on the big cart walking mechanism by a supporting shaft; the other end of the stander is movably connected with one end of the mixing oil cylinder; the other end of the mixing oil cylinder is fixedly installed on the big cart walking mechanism; by driving force of the mixing oil cylinder, the stander is capable of rotating on the big cart walking mechanism along with the supporting shaft; the stander is set with the hook tooth chain-plate type sludge stack-dumping and throwing mechanism and the drive mechanism; and a chain of the hook tooth chain-plate type sludge stack-dumping and throwing mechanism is connected with a drive end of the drive mechanism, which is capable of driving a chain plate and hook teeth installed on the chain to carry out circulating motion.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the sludge stack dumper.