▎ 摘　　要

NOVELTY - The device has a main sealing sheet (1) whose top end is connected with a bottom end of a fan-shaped plate. A top end of a secondary sealing sheet (2) is connected to the bottom end. The auxiliary sealing sheets is compressed and bent. The main sealing sheets are provided with a first sealing sheet and a second sealing sheet that are connected in sequence. The first sealing sheets and the second sealing sheets pass through a first connecting plate and a third connecting plate. The second connecting plates are connected with the first connecting plates and the third connecting plates. A first connecting board is connected between the second connecting boards. The sealing sheets are made of Q235 steel material. USE - Radial sealing device for rotary air pre-heater used in boiler. Can also be used in axial sealing, annular sealing and central cylinder. ADVANTAGE - The sealing sheet coated with the coating graphene has good abrasion resistance, corrosion resistance and flexibility, when installing, adjusting the flexibility sealing sheet and the fan-shaped plate certain degree of interference according to the air pre-heater, ensuring the empty pre-operation after reducing the gap between the plate and the sealing sheet, effectively reducing the air leakage rate of the pre-cooler, and the flexible contact of the plate with the auxiliary sealing sheet avoiding the damage caused by the end part directly contact. The sealing performance of the sealing device is enhanced and the service life of the secondary sealing sheet is greatly increased. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a structure of a radial sealing device of a rotary air pre-device. Main sealing sheet (1) Secondary sealing sheet (2) Pressing plate (3)