Liquid spray device

A liquid spray device, comprising:

• a container defining a reception space for receiving a liquid medicine therein, said container having a discharge outlet for discharging the liquid medicine to an exterior of the container, said container further having a first opening formed at a bottommost portion thereof and a second opening formed at a topmost portion thereof and in spatial communication with said reception space;
• a spray module disposed in said discharge outlet, and being connected electrically to a driving source such that the liquid medicine forcefully collides against said discharge outlet due to ultrasonic oscillation of said spray module, thereby spraying out a plurality of mist droplets;
• a particle sorter disposed downstream to a discharging direction of the liquid medicine, spaced from said spray module at a predetermined distance to permit further collision of the liquid medicine during a discharging operation such that said plurality of mist droplets are sprayed out through the particle sorter in terms of a plurality of micro-mist droplets along the discharging direction;
• and
• a recycle system that is installed within said container, that is adapted to collect said plurality of mist droplets and that is adapted to automatically transfer said plurality of mist droplets back into said liquid medicine for collecting in said reception space in said container, said recycle system including a collection tube fastened to said container and having a lowest tube section proximate to and in spatial communication with said first opening, and a connection pipe interconnecting said first and second openings such that in case said discharge outlet is biased by pressure of the liquid medicine during the discharging operation, a siphon phenomenon is resulted due to vacuum of said reception space to draw said plurality of mist droplets collected at said lowest tube section back into said reception space via said first opening, said connection pipe and said second opening.