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本发明是真空灌液装置,可供不同直径容器在实验室灌装浸蚀性液体之用。众所周知的一种真空灌液装置包含一个往复移动的充液头(装配件),充液头上有两个管道,可接通真空源和液源;其下部是环形槽,用来放置密封环。以前这类装置的缺点是:不能保证
The invention is a vacuum liquid pouring device which can be used for filling different kinds of diameter containers in the laboratory with the erosive liquid. A well-known vacuum fluid filling device includes a reciprocating fluid-filled head (assembly). The fluid-filled head has two conduits for connecting the vacuum source and the fluid source. The lower portion is an annular groove for receiving the sealing ring . The disadvantage of this type of device in the past is that it can not be guaranteed