Mixing device for increasing demulsification speed of extremely-viscous crude

The invention discloses a mixing device for increasing the demulsification speed of extremely-viscous crude, and the device comprises a vertically-arranged cylindrical sealed shell, wherein an oil inlet pipeline is arranged on one side of the shell, and an oil outlet pipeline opposite to the oil inlet pipeline is arranged on the other side of the cylindrical sealed shell; a transmission shaft is longitudinally arranged in the shell from bottom to top, an impeller is arranged on the transmission shaft, the upper end of the transmission shaft penetrates out of the top of the shell and is connected with a drive device; and a guide plate is arranged in the shell and positioned between the transmission shaft and the oil inlet pipeline, a plurality of through holes are arranged on the guide plate, and the periphery of the guide plate is fixed on the inner wall of the shell. The mixing device is used for stirring an incoming liquid and an emulsion breaker by driving the impeller through a variable frequency motor, a