In the early stage of our country

the technology of CFB boiler independently developed and produced is not very mature

there are some defects

and some of the boilers put into operation have some difficult problems. Because the characteristic of CFB boiler is the micro positive pressure operation in the furnace

the equipment sealing in the micro positive pressure area needs higher requirements. In order to improve the current situation

the dynamic and static sealing structure of the head axle is redesigned and reformed. A dynamic and static sealing device is designed

and the packing in the inner packing chamber is replaced by the packing with high temperature resistance

wear resistance and compressibility. Finally

the scraper feeding is completely solved after many attempts Leakage of smoke and coal powder at the axle of coal machine head.