PURPOSE: To safely supply fluid into a mud gun by providing plural circular grooves on the contacting surface of a fixed disk with a rotary disk and connecting pipings for fluid with the groove parts.
CONSTITUTION: The rotary disk 2 is placed on the hollow fixed disk and the fixed disk is fixed to a hollow cylinder 3. One or more arc-circular groove parts 5 are concentrically provided on the fixed disk and packagings 6 are set at the circumferences thereof to prevent the leakage of the fluid. Steam supplied from the piping 7 passes through the groove part 5 and is supplied to a rotary body from the piping in the rotary disk 2. Returned steam passes the groove part 5 through the piping 9 and is returned to the piping 10 at the fixed disk side. Cooling water is supplied from the piping 11 and passes through the groove part 5 and is supplied to the supplied body from the piping 12 in the rotary disk 2 and returned to the piping 14 through the piping 13 and groove part 5. Air is supplied to the rotary body from the piping 16 through the groove part 5 and discharged to the atmosphere.
SAKANE TOSHIYUKI
NIIMOTO TAKESHI
IZUTSU MASAAKI
YABU SHIGERU
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