Seawater collector for stratified sampling

The utility model discloses a stratified sampling seawater collector which comprises a clamping sleeve and a counter weight, a collecting assembly is installed at the bottom of the clamping sleeve and comprises a ring sleeve and an inner cavity, a sampling assembly is installed on the outer side of the ring sleeve and comprises an inlet pipe and an electromagnetic valve, an air inflation assembly is installed at the bottom of the clamping sleeve, and the air inflation assembly is connected with the inner cavity of the ring sleeve. The air inflation assembly comprises an air cavity and an air pipe, a buoyancy adjusting assembly is installed at the top of the air cavity, the buoyancy adjusting assembly comprises a movable plate and a pressure valve, the seawater collector for stratified sampling can adjust the needed sampling depth by rotating different screw rods, sampling work of seawater at different depths can be conveniently carried out, and the sampling efficiency is improved. Meanwhile, the plurality of