The invention discloses a
tin oxide crystal preparation device which comprises a reaction tank, a vortex
pipe is arranged on one side of the reaction tank, a water and
gas mixing tank is arranged between the reaction tank and the vortex
pipe, a water tank is arranged on the other side of the reaction tank, a spiral
pipe rotationally connected with the reaction tank is arranged in the reaction tank, an
airbag for stirring is arranged at the lower part of the spiral pipe and is communicated with the spiral pipe, a power box is arranged above the reaction tank, the spiral pipe penetrates through the power box, and a plurality of axis wings positioned in the power box are fixed at the upper part of the spiral pipe; the
tin oxide crystal preparation device further comprises a conveying pipe, a cold
water pipe and a hot gas pipe are arranged on the vortex pipe, the two ends of the hot gas pipe are respectively communicated with the vortex pipe and the spiral pipe, the cold
water pipe is communicated with the water and
gas mixing tank, a water conveying pipe is arranged on the water and
gas mixing tank, the two ends of the conveying pipe are respectively communicated with the water and gas
mixing tank and the power box, a pipe orifice of the conveying pipe positioned in the power box is toward the axis wings, and an output pipe is arranged on the power box and is communicated with the water tank. The temperature and the stirring speed of the
tin oxide crystal preparation device are simultaneously realized by using cold gas and hot gas of the vortex pipe, and the operation is simple.