Reverse osmosis membrane emergency seawater desalination device

The reverse osmosis membrane emergency seawater desalination device comprises a desalination box, a seawater box, a fresh water box, a desalination reverse osmosis membrane, a desalination piston plate, a control worm gear, a sliding rod and a control worm, the seawater box is installed on the upper portion of the interior of the desalination box, the fresh water box is installed on the lower portion of the interior of the desalination box, and the seawater box and the fresh water box are communicated through a desalination pipe. A water outlet pipe is arranged at the bottom of the fresh water tank and extends out of the bottom of the desalination tank, a water outlet cover is mounted on the outer side of the water outlet pipe, the desalination reverse osmosis membrane is mounted in the desalination pipe, water inlets are formed in the right side of the seawater tank and the right side of the desalination tank, and the desalination piston plate is located in the seawater tank. The desalination piston plate is