Extraction tank capable of being automatically disassembled and assembled

The utility model discloses an extraction tank capable of being automatically disassembled and assembled, which comprises a tank body with a built-in filter screen, and the tank body comprises an upper tank body and a lower tank body which are matched with each other; a driving mechanism for driving the lower tank body to be separated from the upper tank body is arranged on the upper tank body, the driving mechanism comprises a driving motor, a driving screw rod and a driving nut matched with an output shaft of the driving motor, the lower end part of the driving screw rod is fixed on the lower tank body, and the upper end part of the driving screw rod is in threaded fit with the driving nut; when the interior of the extraction tank needs to be cleaned or maintained, only the driving motor needs to be driven, the driving motor can drive the driving nut to rotate, the driving nut is in threaded fit with the driving screw rod, and the driving nut can drive the driving screw rod to drive the lower tank body to d