Medicine extraction tank

The utility model provides a medicine extracting tank which comprises an extracting pipe and an impregnating tank, the extracting pipe is arranged in the impregnating tank and communicated with a feeding pipe extending out of the impregnating tank, two ends of the extracting pipe are respectively connected with a filter cartridge, two sides of the impregnating tank are respectively connected with a telescopic connecting pipe in a sliding mode, and the telescopic connecting pipes penetrate through the filter cartridge. One end of the telescopic connecting pipe is matched with the extraction pipe, the other end of the telescopic connecting pipe is communicated with a first return pipe and a second return pipe, the free ends of the first return pipe and the second return pipe are communicated with the other telescopic connecting pipe, the first return pipe and the second return pipe are connected with water pumps, and the telescopic connecting pipe close to one end of the extraction pipe is connected with a filt