Novel multi-functional sludge heat pump drying machine

The invention relates to a novel multi-functional sludge heat pump drying machine, comprising a sludge drying box; the sludge drying box is separately provided with a wet sludge inlet and a dry sludgeoutlet; the wet sludge inlet is connected with a sludge feeding extrusion device; the sludge drying box is internally provided with a first chain network conveyor belt and a second chain network conveyor belt, and a turnover barrel is arranged between the first chain network conveyor belt and the second chain network conveyor belt; the top and bottom of the sludge drying box are respectively andevenly provided with a plurality of hot and humid air outlets and dry hot air inlets; the hot and humid air outlets and the dry hot air inlets are connected with a dehumidification heat pump; the dehumidification heat pump is internally provided with an evaporator, a condenser and a mixed flow chamber; the evaporator is connected with a condensed water discharge pipeline and a waste water recoverydevice; the condenser is c