Sealing device for kiln head and kiln tail of rotary kiln

The invention provides a rotary kiln head and tail sealing device which comprises a flow guide isolation assembly composed of a flow guide isolation moving ring and a flow guide isolation static ring, and the flow guide isolation moving ring and the flow guide isolation static ring are staggered and inserted to form a labyrinth sealing cavity; the sealing panel is sleeved on the supporting ring along the axial direction, is fixedly connected with the supporting ring and synchronously rotates along with the supporting ring; the sealing ring is positioned in the sealing cover and sleeves the sealing panel; the supporting rod penetrates through a through hole in the sealing ring and supports the sealing ring, and the supporting rod is sleeved with an elastic washer and a spring. The sealing filler is located between every two adjacent sealing rings. The air blowing pipe is arranged at the top of the sealing cover and is communicated with an external high-pressure air source; the discharge opening is formed in th