Efficient ash removal device of cement kiln flue gas denitration system

The invention discloses a cement kiln flue gas denitration system efficient ash removal device which comprises a supporting outer cover, an ash removal mechanism and a limiting mechanism are arranged in the supporting outer cover, the ash removal mechanism comprises two inner sleeves, the outer walls of the two inner sleeves are movably connected with outer sleeves in a sleeved mode, and the outer sleeves are connected with the limiting mechanism in a sleeved mode. Two sets of supporting shells are arranged on the outer wall of one side of the supporting outer cover, the inner sleeve and the outer sleeve are partially located in the supporting shells, a connecting frame is fixedly connected to the outer wall of one side of the outer sleeve, gear sets are arranged on the outer walls of the two sides of the connecting frame correspondingly, and motors are arranged on the two gear sets; one end of the inner sleeve is connected with a gas supply mechanism, the gas supply mechanism comprises ...