Plankton collection system switch

The utility model provides a plankton collection system switch, includes the main part, the main part vertically is equipped with the cavity along the axle center, supreme compression spring and the center post of being equipped with in proper order under following in the cavity, wherein center post and main part inner wall clearance fit, have first through -hole and second through -hole along boring radially respectively on main part and the center post, the upper and lower end surface of main part is equipped with first screw thread section and second screw thread section respectively, and the top cap is through first screw thread section and main part threaded connection, and top cap and main part up end keep at a distance, and the nut is screwed up in the main part through second screw thread section to make the main part fix on collection system. The utility model provides a pair of plankton collection system switch is through setting up spring and center post in the main part to it has the through -hole to open on main part and center post, realizes to collection system push type controlled shutdown and open that it is more convenient to operate.