The invention discloses a device for preparing nanofibers by a differential split-flow centrifugal
spinning method. The device mainly comprises a motor support, a high-speed motor, a
coupling, a rotator, a continuous feed device, an
infrared temperature sensor, a conveyer belt roller set, an electromagnetic heater, a
roller bearing block, a rotator bearing, a
spinning manifold, conveying cord fabric, a rolling device and a take-up device. The motor support is fixedly arranged on the bottom bin of the
spinning manifold and is used for fixing the high-speed motor; the rotator is driven to rotate at a high speed by the high-speed motor through the
coupling and the rotator bearing; the continuous feed device is fixedly arranged at the top end of the spinning manifold; a
discharge hole of the continuous feed device is arranged at the upper end of the rotator in an eccentric way, and a small interval is kept between the
discharge hole and the upper end of the rotator. By combining a fluid differential structure and a reinforced fluid reduced
conical surface, the control on the reduced degrees and centrifugal forces of fluids with different
viscosity is realized, and meanwhile, a simple and efficient solution is provided to batch
nanofiber preparation of solution or melt by the continuous feed device, an indirect heating device and the continuous take-up device.