Efficient powder concentrator for preparing pulverized coal

The utility model discloses an efficient powder concentrator for pulverized coal preparation. The powder concentrator comprises a powder concentrator barrel, an ash bucket, a cage-shaped rotor, an airoutlet pipe, an explosion-proof valve, an air inlet pipe, a coarse material collecting pipe and air guide blades, a plurality of discharging pipes are connected to a discharging opening of the ash hopper, the lower ends of the discharging pipes are fixedly connected to the bottom of the powder concentrator barrel, discharging pipe pipelines penetrate through the barrel wall of the powder concentrator barrel and then are connected with coarse material collecting pipes, inverted cones are arranged above pipe openings of the air outlet pipes, and the inverted cones are located in the middles ofthe discharging pipes; according to the utility model, the sealed blanking pipe is additionally arranged between the blanking port of the ash bucket and the coarse powder collecting pipe; coarse powder directly falls into the