Patent ID: 8771509
Filing Date: 2014-07-08
Classification: C02F,G21F

Abstract:
1. A purifying device for sludge underwater, comprising: a substantially rectangular frame having open sides; a hollow liquid container at a lowermost portion of said substantially rectangular frame; at least one filter within said substantially rectangular frame, said filter having a filtrate discharging hole in fluid communication with a liquid flow hole and a backwash hole of the hollow liquid container; and a pump mounted on an upper portion of said substantially rectangular frame, and having an inlet connected to the liquid flow hole of the hollow liquid container through a liquid pipeline such that a negative pressure is created within said hollow liquid container thereby causing filtrate to be drawn through an outer surface of the filter and through the filtrate discharging hole; wherein, while said purifying device is under water, water to be filtered enters an interior portion of said substantially rectangular frame through said open sides, where it is then drawn through said at least one filter due to the negative pressure created by said pump and the hydraulic pressure of the area, thereby causing solid particles to be retained by said at least one filter.