| 摘要 |
A manual liquid sprayer for spraying a liquid contained in a vessel comprising a cylinder member including an upper air cylinder, a lower liquid cylinder, an air piston slidably fitted in the air cylinder, and a suction pipe suspended in the vessel toward a bottom thereof and connected to the liquid cylinder. An actuating member vertically movably arranged in a posture, in which it is upwardly biased toward the cylinder member, comprises a hollow stem having its intermediate portion fitted into the air piston and projecting upward from the inside of the liquid cylinder, a depressing head fitted on an upper portion of the stem, a nozzle hole opened in a side of the depressing head, and first and second flow passages joining each other this side of the nozzle hole. The first flow passage communicates with an interior of an air chamber on one side of the air piston, and the second flow passage communicates with the liquid cylinder via the stem. The actuating member is depressed to displace the air piston in the air cylinder, thereby jetting out an air in the air chamber from the nozzle hole via the first flow passage, and at that time negative pressure is applied to an interior of the second flow passage to spray the liquid in the vessel from the nozzle hole along with jetted air mixed with the liquid.
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