NOZZLE WASHING DEVICE

摘要

A nozzle washing device capable of minimizing an opening area of a nozzle washing hole, being reduced in volume, minimizing an amount of a washing liquid used, and eliminating adhesion of crystallites to a reaction pipe which is caused by the washing liquid. Specifically, the device which washes nozzles for drawing liquid received in reaction vessels and nozzles for injecting liquid into the reaction vessels, and which comprises nozzle holding means provided above a location where the reaction vessels are installed and for holding the nozzles vertically movably so that the nozzles can enter the reaction vessels, a nozzle washing casing provided between the nozzle holding means and the location where the reaction vessels are installed, nozzle passages which are provided within the nozzle washing casing and through which the nozzles held by the nozzle holding means can pass vertically movably, and washing mechanisms disposed in the nozzle passages.