Reaction kettle

The utility model relates to the technical field of fixed reactors, in particular to a reaction kettle which comprises a reaction kettle body, a stirring assembly and a cleaning assembly, the cleaning assembly comprises two connecting rods, a ring brush, a bracket, a connecting plate, a screw rod and a driving motor; the stirring assembly is used for stirring materials in the reaction kettle body, so that the materials are fully and uniformly mixed and then react; the annular brush clings to the inner wall of the reaction kettle body; during cleaning, a driving motor is started, the driving motor drives a screw rod to rotate, the screw rod drives a connecting plate to slide and lift, so that two connecting rods are driven to slide and lift, finally, a ring brush is driven to slide and lift, and the driving motor is controlled, so that the ring brush finally reciprocates and lifts in the reaction kettle body, and the inner wall of the reaction kettle body is brushed. Therefore, the problem that the interior of