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U-shaped unpowered oil removing device

The invention discloses a U-shaped unpowered oil removing device comprising a rack, wherein the rack is connected with a U-shaped tube (1), a nozzle at one end of the U-shaped tube is spliced with a liquid inlet hopper (2), a liquid outlet of the liquid inlet hopper (2) is arranged at the middle-lower segment of a vertical tube segment of the U-shaped tube (1), two nozzle segments of the U-shaped tube (1) are respectively provided with an oil outlet (3) and a waste liquid outlet (4), the oil outlet (3) is arranged at the nozzle connected with the liquid inlet hopper (2), and the height of the oil outlet (3) is not smaller than that of the waste liquid outlet (4). The principles that the U-shaped tube is balanced and the density of oil is smaller than that of water are utilized in oil recycling, thus, after residual soup containing oil is filled from the liquid inlet hopper into the U-shaped tube filled with the residual soup, oil directly floats above the nozzle spliced with the liquid inlet hopper because of light weight, and the oil and the residual soup can respectively flow into an appointed region under the condition that the residual soup containing oil is continued to be filled, thus, the aim of unpowered oil separation is achieved.