The utility model relates to the technical field of
edible oil processing, and discloses a multistage
filtration and extraction combined type
edible oil sample pretreatment device which comprises an upper tank shell, a
filtration mechanism is arranged on the inner top surface of the upper tank shell, and the
filtration mechanism comprises a first
servo motor, a transmission cavity and a fixing frame; the output end of the first
servo motor is fixedly connected with a first main gear, and the periphery of the inner top face of the transmission cavity is rotationally connected with a plurality of first auxiliary gears. According to the utility model, the plurality of rotating rings are arranged in the filtering mechanism, and the first
servo motor can control the plurality of rotating rings to synchronously rotate in different directions under the meshing action of the gears, so that the
brush can clean the filter screen on each placing frame, and the filtering mechanism is continuously kept clean in the filtering process; impurities are prevented from being accumulated, the filtering precision is effectively improved, the burden of manual cleaning is reduced, and flow reduction and efficiency reduction caused by blockage are avoided.