Light hydrocarbon extraction device

The invention belongs to the technical field of petroleum equipment, and relates to a light hydrocarbon extraction device. The light hydrocarbon extraction device comprises a guide rod, wherein a lifting platform is arranged on the guide rod, and a first flange and a second flange are arranged on the lifting platform; an upper fixing disc is arranged at the upper end of the guide rod, a lower fixing disc is arranged at the lower end of the guide rod, a lifting driving device and a controller are arranged on the upper fixing plate, the lifting driving device is connected with a transmission mechanism, the transmission mechanism drives the lifting platform to move under the driving of the lifting driving device, and the lifting driving device is connected with the controller; a medium sensoris arranged on the outer wall of an oil pumping pipe, and a wire pipe of the medium sensor penetrates out of the interior of the oil pumping pipe and is welded and sealed at a through hole; and the medium sensor is connected