| 摘要 |
PROBLEM TO BE SOLVED: To cut off liquid sufficiently and to prevent liquid sagging in an aerosol device using compressed air. SOLUTION: This spray nozzle 10 has a nozzle 2 and a tip inserted in the front surface of a button 1, and between the tip and the button 1, a stop valve 20 having elastic restoring power is inserted. Above a center line A-A, an on- setting state prevails, and below the center line A-A, an on-jetting state prevails. The stop valve 20 consists of a central part 21, a closing projection part 22 fitted in a liquid passage 7, a first gap 23, a connecting part 24, a second gap 25, an outer peripheral part 26 and the like. When pressure in the on-jetting liquid passage 7 rises, the stop valve 20 is pushed to the left to be in a state below the center line A-A, allowing a gap 27 to be formed. Then, the liquid enters a nozzle inside 12 and is sprayed from a jetting hole 4 through a passage 8. When the jetting is finished, the stop valve 20 is instantaneously returned to the state above the center line A-A by its elasticity to cut off the liquid. |
