Floating oil collecting device

A floating oil collecting device for collecting floating oil that has accumulated in an oil/water separation tank, the floating oil collecting device comprising:

• a swirl collection cup that is disposed beneath the water surface side of the oil/water separation tank, and whose diameter tapers downward;
• a first pipe that is connected to the outlet, which is located at the bottom of the swirl collection cup, to guide the collected floating oil downward;
• a second pipe that is placed downstream of the first pipe and serves to guide the floating oil in the first pipe along a horizontal direction;
• a third pipe that is placed downstream of the second pipe and serves to guide the floating oil in the second pipe upward;
• a slider mechanism that is arranged along the inner wall of the oil/water separation tank and accommodates the third pipe so that the third pipe can slide vertically;
• and
• a buoyancy material that maintains a constant distance between the swirl collection cup, which is submerged in the oil/water separation tank, and the water surface,
• wherein the slider mechanism comprises:
• a pipe fixing duct that has a U-shape at the horizontal cross-section, and has an opening space extending along the vertical direction, and
• a plurality of rotating rollers that are arranged horizontally between the opposing surfaces of the pipe fixing duct and also arranged near the opening surface side of the pipe fixing duct,
• wherein the pipe fixing duct is fixed to the inner wall of the oil/water separation tank so that it extends vertically, and
• wherein the third pipe is disposed in the opening space inside the rotating rollers.

A floating oil collecting device for collecting floating oil that has accumulated in an oil/water separation tank, the floating oil collecting device comprising:

• a swirl collection cup that is disposed beneath the water surface side of the oil/water separation tank, and whose diameter tapers downward;
• a first pipe that is connected to the outlet, which is located at the bottom of the swirl collection cup, to guide the collected floating oil downward;
• a second pipe that is placed downstream of the first pipe and serves to guide the floating oil in the first pipe along a horizontal direction;
• a third pipe that is placed downstream of the second pipe and serves to guide the floating oil in the second pipe upward;
• a coil tube that is interposed midway through the third pipe and is vertically extendable and contractible;
• and
• a buoyancy material that maintains a constant distance between the swirl collection cup, which is submerged in the oil/water separation tank, and the water surface,
• wherein the floating oil collecting device, further comprising:
• a joint box that connects the third pipe and the coil tube, wherein the diameter of the third tube is different from the diameter of the coil tube.