| 摘要 |
<p>The feeder comprises a hollow body with an inlet nozzle delivering into the body through a clean delivery outlet. The clean delivery outlet is pref. formed by producing a nozzle which is convergently tapered on the outside towards the outlet. The taper is pref. conical. This type of outlet ensures that rising air bubbles intervene correctly and cleanly between drips. The feeder delivers regular drips, all of equal vol. The feeder can be mfd. cheaply and simply as a plastic moulding.</p> |
