The utility model relates to
water quality sampling equipment technical field discloses a kind of underground
water quality survey sampling device, comprising: sampling tank;And the pumping mechanism being installed in the lateral wall of sampling tank, pumping mechanism includes
piston cavity,
piston being movably connected in
piston cavity, the drive
assembly for driving piston reciprocating between first position and second position, and two input pipes and two output pipes being communicated with piston cavity, input
pipe and output
pipe are set one by one, and inside are all provided with
check valve, external underground water can sequentially by input
pipe, piston cavity and output pipe into sampling tank, piston moves from first position to second position process,
check valve on the output pipe close to second position and input pipe close to first position are in open state, other
check valve is in
closed state, conversely, the state of all check valve is switched.
Piston is constantly moved between first position and second position, realizes the continuous, efficient sampling of underground water.