本申请涉及一种废旧汽车机油回收装置，涉及废旧汽车资源回收的技术领域，其包括油箱以及气体增压泵，气体增压泵的进气端与油箱连接，气体增压泵的出气端连接有排气管，排气管另一端用于与发动机的注油口密封连接，油箱的另一端连接有软管，软管的端部安装有漏斗，漏斗置于发动机的排油口处。本申请利用气体增压泵对油箱内的气体进行抽吸 ，使油箱内形成负压，从而将漏斗内的机油抽吸至油箱内；同时气体增压泵将从油箱内抽出的空气从注油口鼓吹至发动机内，使得发动机内的压力增高，有利于将发动机内的机油从排油口压出，提高机油的流速，便于机油从放油口流出，改善了机油回收不便的问题。

This application relates to a waste car oil recovery device, which relates to the technical field of waste car resource recovery. It includes a fuel tank and a gas booster pump, the inlet end of the gas booster pump is connected to the fuel tank, the outlet end of the gas booster pump is connected to an exhaust pipe, the other end of the exhaust pipe is used for sealing connection with the oil injection port of the engine, the other end of the fuel tank is connected to a hose, and the end of the hose is installed with a funnel, Place the funnel at the engine oil drain. This application utilizes a gas booster pump to suction the gas in the fuel tank, causing a negative pressure to form inside the fuel tank, thereby pumping the oil in the funnel into the fuel tank; At the same time, the gas booster pump blows the air extracted from the fuel tank from the oil injection port into the engine, increasing the pressure inside the engine, which is conducive to pressing out the oil from the oil discharge port, increasing the flow rate of the oil, facilitating the oil to flow out from the oil discharge port, and improving the inconvenience of oil recovery.