Device for preparing nanometer ferroferric oxide on basis of membrane technology

The invention discloses a device for preparing nanometer ferroferric oxide on the basis of a membrane technology and relates to the field of chemical experiment equipment. The device comprises a reaction tank and two liquid storage tanks, wherein the liquid storage tanks are respectively arranged as a Fe and Fe mixed solution storage tank and a NaOH storage tank; a mixed solution draining pipe is arranged at the bottom of the Fe and Fe mixed solution storage tank; the mixed solution draining pipe is connected with the reaction tank; a water inlet pipe and a water draining pipe are arranged on the NaOH storage tank; the water inlet pipe is connected with the reaction tank; the water draining pipe is introduced into the reaction tank; a membrane component is arranged in the reaction tank; a stirrer is arranged on the reaction tank on one side of the membrane component close to the mixed solution draining pipe; and the tail end of the water draining pipe is located above the stirrer. The device i