Separatory funnel

Abstract

The invention provides a separatory funnel which comprises a stopper, a spherical funnel body, a piston, a piston chamber and a leaking pipe, wherein the top end of the leaking pipe is connected with the spherical funnel body, the piston chamber is fixedly connected with the middle upper part of the leaking pipe, the piston is inserted into the piston chamber and in a seamless flexible connection with the piston chamber, a sleeve is arranged on the outer side of the leaking pipe below the piston chamber, the sleeve is in a flexible connection with the leaking pipe, an air outlet branch pipe is arranged at the upper part of the sleeve, and an air inlet hole is formed on the wall of the lower opening of the sleeve. The separatory funnel has a simple structure and is easy to fabricate with low cost.

Description

technical field [0001] The invention relates to a separatory funnel for experiments, in particular to a separatory funnel with an air guiding device whose piston is not easy to drop. Background technique [0002] A separatory funnel is an experimental instrument commonly used in chemical experiments. In a gas generation experiment, it is necessary to assemble a gas generating device, an additive, an air guide tube and a separatory funnel. A general separatory funnel is composed of a bucket body and a drain tube. , there is a switch on the funnel. In the experiment of such a separating funnel, the stopper of the flask must be opened when adding the solution dropwise to the reactor. At this time, the poisonous substances and irritating substances are easy to volatilize, pollute the environment, and cause harm to the experimenter himself. It is also easy to cause health hazards, and during the experiment, it often occurs that the solution cannot be dripped continuously because ...

AI Technical Summary

Problems solved by technology

[0002] A separatory funnel is an experimental instrument commonly used in chemical experiments. In a gas generation experiment, it is necessary to assemble a gas generating device, an additive, an air guide tube and a separatory funnel. A general separatory funnel is composed of a bucket body and a drain tube. , There is a switch on the funnel. In the experiment of such a separating funnel, the stopper of the flask must be opened when the solution is dripped into the reactor. At this time, the poisonous and irritating substances are easy to volatilize, pollute the environment, and cause harm to the experimenter himself. It is also easy to cause health hazards, and it often occurs during the experiment that the gas pressure in the reaction vessel is too high to continue dripping the solution, or even the danger of explosion, which affects the progress of the experiment.

Although some separatory funnels have been improved, for example, when in use, the cork of the flask is punched with two holes, the leaky tube can be inserted into one hole on the cork, and the gas guide glass elbow can be inserted into the other hole. The gas in the bottle is exported, but the separatory funnel of this device is separated from the gas guide glass elbow, which is troublesome to operate, and a bent air guide tube needs to be made first, which is not safe when the air guide tube is bent, and it is easy to break and puncture human hands

In addition, the piston of the separatory funnel often falls out and breaks, making the separatory funnel unusable

Chinese Patent No. 201020611292.X, the technical solution named "A Separating Funnel" improves the problem of piston drop, but does not solve the problem of air-guided dripping

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