Device for preparing nanofragmented product and method for preparing nanofragmented product

A device and method for preparing a nano-fragmented product. A polysaccharide slurry is circulated in a polysaccharide supply path (3) via a chamber (2). Specifically, using a pump (8), the polysaccharide slurry in a tank (7) is circulated in a circulation path (9) which is formed using a vinyl hose, a rubber hose or the like. On the other hand, another slurry than the polysaccharide slurry is circulated through a second fluid medium supply path (4) as another circulation path via the chamber (2). Specifically, using a pump (11), the slurry other than the polysaccharide slurry in a tank (10) is caused to pass through a heat exchanger (12) and a plunger (13) and thereby circulate in the other circulation path. The slurry other than the polysaccharide slurry circulated in the second fluid medium supply path (4) is orifice-injected against the polysaccharide slurry circulated in the polysaccharide slurry supply path (3) and flowing through the chamber (2).