Super-clean coal preparation device

The utility model discloses an ultra-clean coal preparation device, relates to the technical field of coal grinding, is used for preparing ultra-clean coal, and provides the ultra-clean coal preparation device aiming at the problem that a pipeline is blocked due to the fact that material precipitation easily occurs due to material characteristics during preparation of the ultra-clean coal at present. The tee joint is arranged at the pipeline connected between the feeding pump and the sand mill, so that a return pipeline can be externally connected, and the other end of the return pipeline is connected to the lifting dispersion machine. Therefore, when the preparation process of the super-clean coal is just started, even if the rotating speed of the feeding pump is too high and the pulse in the pipeline is too large, the material can return to the lifting dispersion machine along the return pipeline, so that the overpressure of the feeding pump and the pipeline is avoided, and the material precipitation is als