| 摘要 |
The invention relates to a breast-milk pump (1) comprising a breast cup (2), a suction connection (8) that can be connected to the suction pump (9) and a blocking device which seals the suction connection against the entry of milk. For this purpose, said pump is provided with a valve housing (5), comprising an inlet (7) that leads to the breast cup (2), an opening (10) connected to the suction pump (9) and a valve body (6). The valve body (6) comprises a cladding surface (6a) and a closing surface (6a'), which together form a hollow body, whose opening faces towards the inlet (7). The hollow body is mounted on a support (6b) so that one side can freely pivot. If during a suction phase, the level of milk that has risen above the collection container (4) reaches the inlet (7), a stream of milk enters the hollow body. As a result of the deflection of the stream against the closing surface (6a'), the valve part (6a, 6a') receives a pressure surge or impulse, which is sufficient to displace the closing surface (6a') against the connection opening (10a), where the closing surface (6a') remains during the additional suction phase, thus protecting the suction connection against the entry of milk. The valve body has a compact construction and guarantees a secure seal. |
