Oil scraping device of petroleum engineering oil production well and using method thereof

The invention discloses an oil scraping device of a petroleum engineering oil production well and a using method thereof. The oil scraping device comprises a top pressing rod, a blade rotating rod, apair of one-way gears which mesh with each other, a screw rod, a transmission part and blades. The top pressing rod and the blade rotating rod are hollow sleeves correspondingly, the lower end of thetop pressing rod is connected with the upper end of the blade rotating rod in a sleeving mode, multiple blades are connected to the outer wall of the lower portion of the blade rotating rod, a certaindistance between the blades and the top pressing rod is provided, and the distance is greater than that of motion of the top pressing rod relative to the blade rotating rod; the pair of one-way gearsare arranged in the top pressing rod in an up-down mode, lower gears are connected with the screw rod, and the screw rod is movably connected into the top pressing rod and extends into the blade rotating rod; and the transmissi