| 摘要 |
The invention relates to a foam spraying device (1) for a liquid container, comprising an air suctioning device (20), a mixing chamber (14) for the airliquid mixture and a spray head (2) with a foam outlet (9). A first pistoncylinder unit (20; 37) for the air and a second piston-cylinder unit (21; 38) for the liquid are provided between the spray head (2) and the liquid container. Each unit is fitted with an inlet (30; 44) and an outlet valve (31; 24) and are coupled in such a way that they cooperate with each other.
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