System for deep-sea planktonic microorganism in-situ concentration, temperature maintaining and pressure maintaining sampling

A system for a deep-sea planktonic microorganism in-situ concentration, temperature maintaining and pressure maintaining sampling, comprising:

• a sampling cylinder body with double layer structures, wherein a bottom of the sampling cylinder body is provided with a sampling water outlet;
• a plug-shaped inner cavity, fixedly disposed in the sampling cylinder body, wherein a top of the plug-shaped inner cavity is provided with a transfer water outlet and a water inlet;
• a water inlet component, connected to the water inlet;
• an end cover, fixedly connected to the top of the plug-shaped inner cavity, wherein the end cover is provided with two through holes, and the two through holes respectively correspond to the transfer water outlet and the water inlet;
• a filter part, fixedly connected to the plug-shaped inner cavity;
• a pressure maintaining device, connected to the sampling water outlet;
• and
• a water outlet pipe, connected to the sampling water outlet;
• wherein a temperature maintaining material layer and a temperature control component are fixedly connected between the double layer structures of the sampling cylinder body, and the temperature control component is electrically connected to a controller.