▎ 摘　　要

NOVELTY - The utility model claims a preparation device of filter material, comprising: A three-dimensional graphene oxide aqueous solution production system, comprising a first reaction kettle, a centrifugal washing mechanism, an ultrasonic processing mechanism, a dialysis machine, a high speed centrifuge and a first storage tank; A chitosan production system, comprising a second reaction kettle, an aqueous solution washing mechanism, a magnetic stirrer, a second centrifugal washing mechanism, a vacuum drier and a second storage tank connected in turn; A gel production system, comprising a third reaction kettle, an ultrasonic de-foaming mechanism, an extruder and a packaging mechanism connected in turn; the third reaction kettle is connected with the first storage tank and the second storage tank. The utility model organically integrates the three-dimensional graphene oxide water solution and the production device of chitosan to prepare three-dimensional graphene oxide gel; the production process is safe and efficient, the product quality is stable, ensuring the continuous production of the material in the reaction process, which is good for industrial production.