Particle size adjustable porous microsphere preparation device

The utility model provides a porous microsphere preparation device with adjustable particle size. The porous microsphere preparation device comprises a liquid supply device, a gas supply device, a liquid drop generation device, an annular electrode plate and a particle curing and forming device, the liquid drop generation device comprises a spray head, a pneumatic focusing cavity, an adjustable focusing pore plate and a high-voltage electrostatic generator; the liquid supply device and the gas supply device are respectively connected with the pneumatic focusing cavity, the annular electrode plate is positioned below the liquid drop generation device, and the particle curing forming device is positioned below the annular electrode plate; by reasonably organizing air flow and liquid flow fields and coupling electrostatic technology, high-viscosity easily-blocked liquid can be continuously and stably broken into liquid drops with uniform particle sizes, fusion of viscoelastic liquid drops in the dropping process