Device for filtering negative pressure solution

Abstract

The invention relates to a device for filtering a negative pressure solution. The device is composed of a closed container, a filtering plate chamber and a vacuum pumping port, a container for a to-be-filtered solution, a container for a filtered solution, a seal ring and a switch, wherein the bottom of the container for the to-be-filtered solution is connected with the filtering plate chamber, and the filtering plate chamber is internally provided with a gasket and a multi-hole filtering plate; a bottom pipeline passes through the seal ring, and enters the container for the filtered solution in the closed container, the closed container is provided with the vacuum pumping port, and the switch is arranged between the container for the to-be-filtered solution and the filtering plate chamber. The device provided by the invention has the advantages that the closed container is vacuumized, and differential pressure is generated between inside and outside of the container, so that a solution enters in the container through the device, and further, the purpose of filtering the solution is achieved, and the operation is rapid and convenient.

Description

technical field [0001] The invention relates to a device for filtering different solutions under negative pressure conditions. The device can filter impurities or particles of different solutions (organic and inorganic). [0002] Background technique [0003] When chemically analyzing a solution (the ionic composition or content in the solution), it is often necessary to pre-process the analytical sample, including filtering with a funnel plus filter paper and sedimentation using a centrifuge. However, these treatment methods have their disadvantages: the filter with funnel and filter paper takes a long time, and the filter paper is easily damaged, which affects the purity of the sample; the precipitation using a centrifuge, although the filtration precipitation time is faster, the floating matter on the solution and the solution in the solution The suspended solids still exist and have to be processed again, which is both troublesome and time-consuming. For this reason, i...

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Problems solved by technology

However, these treatment methods have their disadvantages: the filter with funnel and filter paper takes a long time, and the filter paper is easily damaged, which affects the purity of the sample; the precipitation using a centrifuge, although the filtration precipitation time is fast, the floating matter on the solution and in the solution The suspended solids still exist and have to be processed again, which is troublesome and time-consuming

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