Suction filtration device for biomedical experiments

Abstract

The invention discloses a suction filtration device for biomedical experiments. The suction filtration device comprises a box body, a suction filtration part and a lifting part, wherein the suction filtration part comprises a funnel and a filter flask matched with the funnel; a branch pipe is arranged on the side wall of the filter flask; the lifting part is used for driving the funnel to cooperate with the filter flask and / or interrupting the cooperation between the funnel and the filter flask; the lifting part comprises a support plate arranged in the box body, a screw rod with the lower endmovably being connected with the support plate, a motor used for driving the screw rod to make positive and negative rotation, and a support sleeve sleeving the screw rod; the side wall of the funnelis provided with a supporting convex edge which can be erected on the support sleeve. The suction filtration device for the biomedical experiments does not need to be manually operated, and is stablein connection, simple in connecting way, rapid in connection speed, simple and convenient to operate and labor-saving.

Description

technical field [0001] The invention belongs to the technical field of biomedicine, in particular to a suction filter device for biomedical experiments. Background technique [0002] In biomedical technology, it is necessary to extract and measure drugs in the laboratory. Filtration is the most common step in the test. The existing filtration methods are mostly ordinary filtration and suction filtration. The suction filtration is performed by a vacuum filtration pump. The rubber tube is connected to the filter bottle, and then the funnel is connected to the filter bottle. During the filter process, the filter pump is turned on, and the filter pump pumps out the air in the filter bottle, so that the inside of the filter bottle is under negative pressure, so that the funnel The liquid can quickly pass through the filter paper and funnel and then fall into the suction filter bottle. This method of suction filtration has fast filtration speed and good filtration effect. [0003...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing filtering method, the filter bottle and the funnel are two independent devices when filtering, and there is no special device for fixing the filter bottle and the funnel. When it is actually used, the entire process is manually operated. , especially when installing the funnel into the filter bottle, it needs to press the funnel manually to make the connection between the funnel and the filter bottle stable, which consumes a lot of manpower, and for female experimenters, it is easy to press the funnel because of its small force. Air leakage occurs at the connection between the funnel and the filter bottle, resulting in poor filtration effect and long time consumption of suction filtration, etc.

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