Floating circulation oil collector with articulated jibs capable of synchronously stretching and folding

The utility model belongs to the technical field of sewage treatment, and specifically relates to a floating circulation oil collector with articulated jibs capable of synchronously stretching and folding. The floating circulation oil collector comprises an oil collecting box, oil collecting box floating barrels, ring tubes, ring tube floating barrels and water jetting tubes, wherein a water outlet and an oil outlet of the oil collecting box on the lower part of the oil collecting box are connected with a water outlet tube and an oil outlet tube; the oil collecting box floating barrels are arranged on the oil collecting box; the ring tube floating barrels and the water jetting tubes are arranged on the ring tubes; the ring tubes are matched with a pulley on a guide rod; a water distributing plate is arranged underneath the oil collecting box; the water distributing plate is connected with the ring tube by a connecting water tube; a water distributing plate floating barrel is arranged on the water distributing plate; the lower surface of the water distributing plate is connected with the articulated jibs; a slewing joint is arranged on the articulated jibs, so that the articulated jibs of an articulated frame can rotate relative to each other; the articulated jibs are hollow, so that the sewage can enter the water distributing plate by the articulated frame; an articulated jib engagement gear is fixed on the articulated jib slewing joint, so that the articulated jibs synchronously stretch and fold, and therefore, the water distributing plate is guaranteed not to be inclined, inclination of the ring tube is avoided, and stable operation of the device is realized.