| 摘要 |
<p>A pump for liquids comprising a hollow cylindrical support body (1) having an annular channel (20) formed at a first end (1b) of the body and open towards the internal cavity (12) of the body, a delivery duct projecting radially from the hollow cylindrical body (1) and being in communication with the annular channel (20) by means of an orifice (21), a pumping member (14) in the form of a resiliently-flexible, cup-shaped diaphragm which has its cavity facing the channel (20), and which is housed in the hollow cylindrical body (1), and a lever (9) for manual operation of the pumping member (14). The pumping member includes a tubular element (26) extending through the cup-shaped diaphragm, the tubular element (26) having a valve member (30) for closing and opening its orifice (31) and being connected to a pipe (29) extending into a container (5). The cup-shaped diaphragm of the pumping member (14) has a continuous flexible lip (23) formed around its periphery, and being positioned within the channel (20) in order to close and open the orifice (21). <IMAGE></p> |
