Polymer-based spherical powder preparation device and preparation process

A polymer-based spherical powder preparation device, comprising a mill milling system and an inductively coupled plasma powder spheroidization system, wherein

• the mill milling system comprises a feeding member, a mill cavity cover, a fixed mill, a rotating mill, a rotating bearing, a transmission device, a motor and a liquid medium temperature adjustment system;
• the fixed mill and the rotating mill are fixed in the mill cavity cover, the rotating mill is fixedly connected to the rotating bearing, and the transmission device is driven by the motor to drive the rotating bearing to rotate, thereby driving the rotating mill to rotate;
• the fixed mill and the rotating mill are also provided with the liquid medium temperature adjustment system, the liquid medium temperature adjustment system realizes temperature adjustment of the fixed mill and the rotating mill by introducing a liquid medium into the fixed mill and the rotating mill, and the mill milling system is of a closed type;
• the inductively coupled plasma powder spheroidization system comprises an inductively coupled plasma generator, a cooling and shaping chamber, a collection chamber, a gas supply device, a high-frequency power supply and a vacuum pumping device, and the inductively coupled plasma generator, the cooling and shaping chamber and the collection chamber are communicated with one another;
• the inductively coupled plasma generator comprises a feeding pipe, a reaction gas pipe, a protective gas pipe, an induction coil, a molten material spray head and a generator housing, the reaction gas pipe is arranged in the protective gas pipe, one end of the feeding pipe is closely connected to a discharging end of the mill milling system, the other end of the feeding pipe penetrates through the reaction gas pipe and extends into the protective gas pipe, the induction coil is arranged around the outside of the protective gas pipe, and the reaction gas pipe does not extend into a surrounding setting surface of the induction coil;
• the molten material spray head is arranged at a tip of the end, close to the induction coil, of the protective gas pipe;
• the reaction gas pipe, the protective gas pipe, the induction coil and the molten material spray head are all closely fixed in the generator housing, and the inductively coupled plasma generator is communicated with the cooling and shaping chamber through the molten material spray head;
• the cooling and shaping chamber comprises a plurality of high-pressure gas spray heads and a cooling and shaping chamber housing, the high-pressure gas spraying heads are arranged around a cross section of the cooling and shaping chamber housing at equal distances, nozzles of the high-pressure gas spraying heads all face the same position in the cooling and shaping chamber housing, and the position is located on a central axis of a nozzle of the molten material spray head;
• the collection chamber comprises a condensed water inlet pipe, a slurry outlet and a collection chamber housing, and the collection chamber housing is communicated with the cooling and shaping chamber housing;
• the gas supply device comprises a reaction gas inlet pipe with one end communicated with the reaction gas pipe and a protective gas inlet pipe with one end communicated with the protective gas pipe, and the other ends of the reaction gas inlet pipe and the protective gas inlet pipe are communicated with the reaction gas pipe and the protective gas pipe respectively;
• and
• the vacuum pumping device is communicated with an inside of the cooling and shaping chamber housing.