The invention discloses a
reverse osmosis seawater desalination machine put in
deep sea, which comprises a freshwater collection tank, multiple
reverse osmosis membrane pipes, a filter screen, a protection cage, a compression-resistant cover, multiple springs and an anti-toppling mechanism, wherein the
reverse osmosis membrane pipes are mounted at the top of the freshwater collection tank, the filter screen surrounds the reverse
osmosis membrane pipes, and the filter screen is externally covered with the protection cage and the compression-resistant cover. Since the deep
seawater is filtered by the filter screen and then reaches the membrane surfaces of the reverse
osmosis membrane pipes, the water molecules in
seawater penetrate through the reverse
osmosis membrane under the effect of the
potential energy of seawater and reach the outer wall surface of a hollow circular
pipe; the freshwater enters an inner cavity of the hollow circular
pipe through micropores on the wall surface of the hollow circular
pipe and flows into the freshwater collection tank under the
gravity effect; finally, the freshwater is pumped onto the land through a freshwater outlet pipeline while a certain
water level in the freshwater collection tank is maintained. The
machine disclosed by the invention has the advantages of low
energy consumption, high freshwater value, simple and compact equipment structure, good overall performance, environmental friendliness and the like, is suitable for the complicated-environment
deep sea, and can be widely applied to the field of
seawater desalination.