Patent ID: 6839930
Filing Date: 2005-01-11
Classification: B08B

Abstract:
1. A cleaning apparatus for penetrating and removing deposits from an internal wall of a kiln comprising a rotary drive unit operatively connected to a first end of a drill shaft; a drill bit suitable for drilling said deposits, attached to a second end of said drill shaft and oriented for coaxial rotation therewith; a portion of said drill shaft, intermediate said rotary drive unit and said drill bit, slidably received in a sleeve member permitting rotational and linear displacement of said drill shaft therein; and a fluid jet projecting from an outer surface of said drill shaft proximal said drill bit, said fluid jet in communication with a pressurized fluid source through said drill shaft, said communication comprising a plenum defined by an inner wall of said sleeve member, an outer surface of said drill shaft, and first and second sealing means spaced apart and sealingly engaging said sleeve member and said outer surface.