Pretreatment device for mixed oil sludge

The utility model discloses a pretreatment device for mixed oil sludge, which comprises a pretreatment box, a stirring mechanism and a sludge separation mechanism, the pretreatment box is provided with an upper box body and a lower box body which are connected up and down, the upper box body is a stirring box, the top of the upper box body is provided with a feed port and a first motor, and the inner side of the upper box body is provided with the stirring mechanism which is in transmission connection with the first motor; the stirring mechanism comprises a rotating rod, arc-shaped sliding sleeves arranged on the two sides of the end part of the rotating rod and stirring rods rotationally connected to the two sides of the middle part of the rotating rod through a rotating shaft, arc-shaped rods are mounted on the two stirring rods, and the arc-shaped rods can extend into the inner sides of the arc-shaped sliding sleeves and are in sliding connection with the arc-shaped sliding sleeves; the arc-shaped rods at