Drilling inner-depth water taking device and underground water sampling device for hydrogeology

The utility model discloses a drilling inner depth water taking device and an underground water sampling device for hydrogeology, the drilling inner depth water taking device comprises a water taking bearing cover, a water storage tank, an inflation assembly, a water injection assembly and two air bag rings, the water taking bearing cover is vertically arranged, and the upper end of the water taking bearing cover is provided with a connecting lug; the two air bag rings are arranged at the two ends of the water taking bearing cover in a sleeving mode respectively, the water storage tank, the inflation assembly and the water injection assembly are all arranged in the water taking bearing cover, the inflation assembly is used for inflating the air bag rings, the water injection assembly is used for pumping a water sample located between the two air bag rings in a drill hole into the water storage tank, and sampling is completed. And stratum water seepage at the corresponding depth in the drill hole can be sample