| 摘要 |
<p>A nipple with the developed pressure adjusting valve (5) is provided in the present invention. The pressure adjusting valve (5) is mounted in the bottom of air cavity of the mounting flange (4) and shaped like a hollowed cylinder having a closed end, and the inside of the valve is used as a valve cavity (9) for air flowing. A side wall (10) of the pressure adjusting valve (5) above the bottom-closed end is formed with at least one slit (11) at a part of periphery of said valve (5). Through the airflow passageway of the valve, the slit (11) serves as an open-closed door to allow the ambient air to flow into the liquid-containing bottle (7). advantageously, the air can flow into the liquid-containing bottle easily and conveniently in the invention, thereby allowing the liquid to flow out from the bottle continuously and steadily, preventing the nipple from collapsing and preventing a vacuum formed inside the bottle as well as preventing the leakage of liquid from the pressure adjusting valve when the bottle is inverted or sucked.</p> |
