| 摘要 |
PURPOSE:To simply change the injection pattern of a pressure-fluid jet by providing a turbulence flow generating body which is placed on the upper course side of the orifice of a nozzle pipe while being variable in its position in the axial direction of the nozzle pipe and a position adjusting mechanism one end of which is linked to the turbulence flow generating body to adjusting the position thereof. CONSTITUTION:A pressure fluid passing through the through hole 9 of a nozzle pipe 4 generate a turbulence flow 15 in the turbulence flow generating portion 12 of a turbulence flow generating body 13. At this time, if the turbulence flow generating portion 12 is brought close to the vicinity of a nozzle tip 11 by operating a position adjusting mechanism 14, the turbulence flow 15 is injected as it is through the orifice 10 of the nozzle tip 11. Therefore, the injection angle theta of the injected pressure fluid 20 becomes large and its injection energy is dispersed reducing the force applied to the operating portion. On the contrary, as the turbulence flow generating portion 12 is gradually parted from the nozzle tip 11, the injection angle theta of the pressure fluid 20 injected out of the orifice 10 gets gradually smaller and, as the turbulence flow generating portion 12 goes away from the nozzle tip 11, the turbulence flow 15 generated by the turbulence flow generating portion 12 is again streamlined in the through hole 9 of the nozzle pipe 4 to become a laminar flow. |
