Resin production apparatus and resin production method

A resin production apparatus, comprising:

• a reactor vessel having a vessel main body which polymerizes an ingredient to prepare a thermoplastic synthetic resin which solidifies at room temperature and storing the synthetic resin in the molten state, an output mechanism which is disposed at a bottom part of the vessel main body and outputs the synthetic resin in the molten state, and a temperature adjustment mechanism which adjusts temperatures of the vessel main body and the output mechanism so as to maintain the molten state of the synthetic resin;
• a crushing device having a cooling mechanism arranged below the reactor vessel, which continuously cools and solidifies the synthetic resin output from the output mechanism, and a crushing mechanism which crushes the synthetic resin fed out from the cooling mechanism;
• and
• a lower gas supply mechanism comprising a valve cleaning mechanism that ejects to the outside an ingredient or accumulated synthetic resin.