| 摘要 |
PURPOSE:To stop liquid feed operation automatically by feeding the air into a manual pump through a liquid feed tube when the amt. of the liquid in a liquid receiver attains a fixed amt. thereby preventing siphonage. CONSTITUTION:Upon provision of predetermined amount of liquid into a liquid receiving tank 27, lifting of a float 17 is stopped by a stopper 21. Since a gate valve 20 is mounted on the float 17, a closed conducting hole 19 is opened as the gate valve lifts to communicate the air chamber 14 with the float chamber 15 thus to feed the air through an air introducing port 22, float chamber 15, air chamber 14 and air rising tube 23 into the upper part of a storage tube 7 of the rising air cylinder 7 and filled gradually. The overflow will enter sequentially into the liquid feed tube 5 and finally fills the manual pump 4. Since siphonage is interrupted, the liquid feed operation is stopped naturally to feed predetermined amount of liquid without requiring any operation. |
