Organic silicon raw material evaporation device for preparing optical fiber preform

The invention relates to an organic silicon raw material evaporation device for preparing an optical fiber preform, wherein the device comprises an evaporation mixer respectively connected with a pressure raw material pipeline and a carrier gas pipeline, and is characterized in that the evaporation mixer is a double-layer hollow tank body, and an inner cavity and an outer cavity are formed in thetank body; an atomizing nozzle communicated with the pressure raw material pipeline is arranged in the middle of the inner cavity, a carrier gas nozzle communicated with the carrier gas pipeline is arranged at the top of the inner cavity, the outer cavity is arranged on the periphery of the inner cavity, the bottom of the outer cavity is communicated with the inner cavity, and a mixed gas outlet is formed in the top of the outer cavity. A waste liquid outlet is formed in the bottom of the inner cavity. The evaporation device is suitable for evaporation of non-high-purity liquid, the heat and mass transfer process is e