Deep cone thickener for treating sandstone wastewater in hydropower industry

The utility model provides a deep cone thickener for gravel wastewater treatment in the hydropower industry. The device comprises a device body and a feeding mechanism, a central feeding pipe, a horn pipe and a reflection table are arranged in the device body, the device body comprises a cylinder I, a cylinder II and a conical barrel, the central axes of the cylinder I, the cylinder II and the conical barrel coincide, and an overflow weir is arranged on the upper portion of the cylinder I; wherein the bottom of the central feeding pipe is communicated with the top end of the horn pipe, and the reflecting table is arranged below the horn pipe and is conical; a sludge outlet is formed in the bottom end of the conical cylinder; the feeding mechanism is mounted at the top of the cylinder I; the feeding mechanism comprises a walkway plate, a diversion weir and a dosing tank; according to the utility model, a steel structure is adopted, the civil engineering amount is small, a diversion weir is arranged, a stirrer