The device comprises a vacuum pump body and a vacuum cover body, the vacuum pump body further comprises a vacuum pump, a suction pipe anda suction nozzle, the vacuum cover body further comprises a suction nozzle socket, wherein the vacuum pump communicates with the suction nozzle through the suction pipe, the suction nozzle is a hollow column body, the middle of the suction nozzle socket is a hollow column, a groove is formed in the periphery of the suction nozzle socket, the suction nozzle corresponds to the groove of the suctionnozzle socket, the inner diameter of the hollow column body of the suction nozzle is not larger than the outer diameter of the hollow column body of the suction nozzle socket, and a positioning partis arranged at the position, corresponding to the vacuum cover body, of the vacuum pump body, and is used for ensuring that the hollow column body of the suction nozzle socket is inserted into the hollow column body of the suction nozzle. Capitanio while he was working for Praxair Surface Technologies in Lisle, Illinois, under the direction of Dr. This sort of distillation technique uses low heat, a vacuum source, and a cold-trap based on the use of. It is mainly used for the extraction of lipids, having the advantage of refreshing the extracting solvent with a reflux system. It seems to have begun in ancient Greece when the philosopher Democritus (circa 460 to 375 B.C. Objective: To evaluate the effectiveness and safety of an intrauterine vacuum-induced hemorrhage-control device for postpartum hemorrhage treatment. Another interesting apparatus used for solvent extraction is the one invented by Soxhlet in 1879. The invention discloses a vacuum extraction device and method. Raise the handle to its highest limit and fully pump the handle up and down several times and the unit will automatically extract the liquid with the created. The history of vacuum technology is a fascinating one.
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