本专利就有关定量吸排泵的问题加以论述。具体地说就是该泵仅靠阀操作就能完成吸取和输送液体的功能,并能够定量输送液体,结构简单,性能可靠。以前,从大容器向小容器提取液体时所使用的手摇泵,是在输送导管中设有空气室,利用虹吸原理进行输送的。这种泵虽然结构简单,价钱便宜,作为一般家庭用泵被广泛而普遍地使用着,但因靠 The patent on the quantitative suction pump issues to be discussed. Specifically, the pump can perform the function of sucking and delivering liquid only by the valve operation, and can quantitatively transport the liquid. The structure is simple and the performance is reliable. In the past, the hand pump used to extract liquid from a large container to a small container was provided with an air chamber in the delivery tube and transported by the siphon principle. Although this pump has a simple structure and a low price, it is widely and commonly used as a general household pump. However,