Cleaning spindle for a solid fuel boiler supports a cleaning knife parallel to a heat exchanger surface of a heat exchanger tube which extends over the length of the surface to be cleaned

摘要

Cleaning spindle supports a cleaning knife (7) parallel to a heat exchanger surface of a heat exchanger tube which extends over the length of the surface to be cleaned. A shaft (2) of the cleaning spindle has a disk (3, 5) on the lower end and one in the center for swirling hot air. The disks have grooves (6) arranged radially over each other. The cleaning knife with a knife surface (9) protrudes from the grooves parallel to the heat exchanger surface. Preferred Features: The disk (5) is formed as a guiding disk on the lower end of the shaft and reaches partially up to the heat exchanger surface. The cleaning spindle leads into the heat exchanger tube on the lower end.