NOZZLE

PROBLEM TO BE SOLVED: To obtain a converged jet flow in a nozzle for jetting a liquid and a nozzle device for mixing a jet flow of the liquid with an abrasive material and jetting the mixture.SOLUTION: A nozzle 10 comprises: a body 11; a buffer chamber 29 provided in the body 11 and having an axis line 28, which is a central line of a jet flow J of a liquid, as a central axis; a throttle 35 for jetting the liquid which is provided on a surface 291 on the front side of the buffer chamber 29 and has the axis line 28 as a central axis; a disc 30 provided inside the buffer chamber 29 to face the surface 291 on the front side of the buffer chamber 29 and having the axis line 28 as a central axis; a support member 31 for supporting the disc 30 inside the buffer chamber 29; a supply port 121 provided in the body 11 for supplying the liquid; and an inflow passage 12 which is provided along a direction different from an extension direction of the axis line 28, is opened on the rear side from the disc 30 of the buffer chamber 29, and communicates with the supply port 121.SELECTED DRAWING: Figure 1 【課題】液体を噴出するノズル、及び液体の噴流に研磨材を混合して噴出するノズル装置において、収束した噴流を得る。【解決手段】ノズル１０は、本体１１と、本体１１に設けられ、液体の噴流Ｊの中心線である軸線２８を中心軸とするバッファー室２９と、バッファー室２９の前方側の面２９１に設けられ、軸線２８を中心軸とし、液体を噴出する絞り３５と、バッファー室２９の前方側の面２９１に対向してバッファー室２９の内部に設けられ、軸線２８を中心軸とする円板３０と、円板３０をバッファー室２９内で支持する支持部材３１と、本体１１に設けられ、液体を供給するための供給口１２１と、軸線２８の延伸方向と異なる方向に沿って設けられ、バッファー室２９の円板３０よりも後方側に開口するとともに供給口１２１に連通する流入路１２と、を備えている。【選択図】図１