| 摘要 |
Spraying pump adaptable to a container and comprising a press-button (1); a diffuser (2); a pump body (3) which defines a pumping chamber and a bottom which is provided with a hollow central recess; a main piston (5) of which the inside defines a first internal hollow space (10) and configures a valve seat (11); a second piston (6) which has a rod (16) penetrating partially into the first hollow internal space (10) and which is intended to be applied to the valve seat, the second piston having a cylindrical skirt inside which is defined a second hollow space (18) which houses partially the hollow central recess; a spring (8); communication means between the pumping chamber and the second internal hollow space; and a communication tube which traverses axially the hollow central recess. |
