An extraction and separation device for chemical experiments

Abstract

An extraction and separation device for chemical experiments comprises two parts, namely, a conical flask and a separating funnel, an upper opening of the separating funnel is in butt joint with an upper opening of the conical flask in a reverse buckling manner to form the whole device; a glass delivery tube is led from the inside of a funnel body of the separating funnel; one end of the glass delivery tube is connected and fixed with the side wall of the funnel body from the inside of the funnel body, the port of the glass delivery tube is not blocked, and the inner channel of the glass delivery tube is communicated with the external atmosphere; the other end of the glass delivery tube extends from the upper opening of the separating funnel, the perpendicular length, extending outwards, of the glass delivery tube is such determined that the glass delivery tube is inserted into the conical flask, but does not touch the bottom of the conical flask when the separating funnel is in butt joint with the conical flask in the reverse buckling manner, the perpendicular length, exposed outside the funnel body of the separating funnel, of the glass delivery tube is larger than 3 / 5 of the overall depth of the conical flask and smaller than the overall depth of the conical flask, and the end opening of one end, exposed outside the funnel body of the separating funnel, of the glass delivery tube is blocked with a sand core.

Description

technical field [0001] The invention relates to an apparatus for chemical experiments, in particular to a device for extraction and separation of chemical experiments. Background technique [0002] In the existing extraction and separation operations, the dissolution and extraction of chemical reagents is usually mixed evenly by hand, or magnetically stirred by a magnetic stirrer. This step is generally easier to implement and has a lower risk factor. Just make sure that the outlet valve on the upper part of the separatory funnel is kept open so that the gas generated in the conical flask can be removed in time. However, the separation steps after the extraction is completed are relatively cumbersome. After the extraction is completed, the entire device is inverted to carry the extract and other liquids of different densities to form layers. When the liquid outlet of the funnel flows out, the gas pressure in the air chamber of the conical flask decreases continuously. When ...

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Problems solved by technology

However, the separation steps after the extraction is completed are relatively cumbersome. After the extraction is completed, the entire device is inverted to carry the extract and other liquids of different densities to form layers. When the liquid outlet of the funnel flows out, the gas pressure in the air chamber of the conical flask decreases continuously. When the pressure in the air chamber is low enough, the liquid will not flow out of the liquid outlet of the separating funnel. At this time, the whole device needs to be erected again. Eliminate the air chamber in the Erlenmeyer flask, and then invert the whole device again for static layering and then release the liquid again. This process requires multiple cycles and the steps are cumbersome, and it is easy to cause volatile toxic gases in the process of multiple cycle operations. released, or corrosive or toxic liquid flows out, causing certain physical damage to the operator

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