| 摘要 |
PROBLEM TO BE SOLVED: To effectively remove scale from the inner wall of a nozzle to greatly reduce the frequency of nozzle inspection and improve the operability by forming a cross-shaped or radial slit at the tip of the nozzle and inserting at least two stirring bodies into the inside of the nozzle. SOLUTION: A cross-shaped or radial slit 4 is formed as a nozzle port at the end face 3 of a nozzle tip 2 of a truncated cone shape, and at least two spherical stirring bodies 5 are inserted into the inside of the nozzle tip 2. When a liquid L is forced into a nozzle pipe 1, one of the stirring bodies 5 is pressed to and fixed at the end of the nozzle pipe 1 and blocks the center part of the slit 4. Another stirring body 5 rotates for itself due to the presence of the slit 4, and a force for successively blocking each intermediate part of the slit 4 is applied to rotate this stirring body around the fixed-state stirring body 5. Thus, the turbulent flow and dispersion of the liquid in the nozzle pipe 1 are induced and scale appearing in the nozzle pipe 1 is removed.
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