Abstract: A device has a gate portion for recovering floating materials on liquid surfaces and for following vertical movement of the liquid level. Gate floats around and rotatable about the gate portion retain the gate portion near the liquid level. Main floats outside the gate floats support a recovery portion. A blade-shaped projection on an outer circumferential part will rotate along the liquid level. A driving device rotates the gate float, with loads of the driving device being supported by the main floats.

Abstract: The present invention provides a device for recovering floating materials on the liquid surface, arranged as the gate portion for recovering floating materials on the liquid surface is installed at the recovery portion in a state of following vertical movement of the liquid level and being able to move freely in a vertical direction, and the float is composed of a plurality of gate floats which are disposed around and in the vicinity of the gate portion and which float and retain the gate portion near the liquid level, and a plurality of main floats which are disposed further outside than the gate floats to float and support the recovery portion, in which the gate floats are arranged in such a manner that they rotate around and in the vicinity of the gate portion, thereby raking and gathering floating materials to the gate portion, and the main floats are arranged in such a manner that at least a part installed with a blade-like projection is provided on an outer circumferential part will move rotationally