SU43199A1 - Extraction apparatus for hot extraction - Google Patents

Description

The device refers to a type of laboratory apparatus, which makes it possible, by the continuous action of a liquid, to extract components that are soluble in this liquid from a taken substance.

The device, as shown in the drawing, consists of the following three separate parts:

1) A - conic flask with a long cheek; 2) B-cap for placing a sample of the material to be extracted, equipped with a siphon tube b; 3) B-tube with a mushroom-shaped extension, serving as a refrigerator.

The instrument is assembled as shown in the drawing. Liquid A is pre-poured into flask A, which is used to extract, and the liquid level should not touch the end of the siphon tube of cap B. Then the weighed extract material is packed into filter paper or similar material and a small layer of absorbent cotton is placed over it; everything is loaded into cap B, equipped with a siphon tube B and two glass hooks a, with which it is placed on the processes in; shoots are soldered to test tube B, which has a mushroom-like extension at the top end and serves as ho (212)

chaser. The upper end of the tube is closed with a rubber stopper with two openings (the stopper is not shown in the drawing), through which glass tubes are passed, one of which reaches the bottom and the other ends directly at the stopper. The first serves for the inflow of a cooling tube of water, the second as an outlet.

When the unit is assembled, the refrigerator is connected to a source of cooling water and placed on a steam bath.

Vapors of boiling liquid, cooled in contact with the surface of the test tube of the refrigerator, drain into a cap equipped with a siphon tube. As soon as the surface of the extracting liquid reaches the level of the bend of the siphon, the liquid quickly flows out of the cap, carrying the extracted substance into the conical flask. After evaporation of the extracting liquid from the conical flask preliminarily carried out on precise chemical scales, an extracted substance remains in it, the amount of which is determined by the weight gain of the flask.

Thanks to glass hooks, the cap is extremely easily and firmly fixed on the test tube cooler and is also easily removed.

Due to the mushroom-like expansion of the upper part of the cooler tube, the need for thin sections or the use of a cork stopper is avoided; the surface of the tube and the surface of a sufficiently long neck of the flask are a sufficiently large amount, so the vapors of boiling extracting liquid completely condense without reaching the upper part of the neck of the flask and do not break at the junction of the upper edge of the flask with the lower part of the mushroom-like thickening; in the inventor's opinion, the mushroom-like expansion does not allow the water droplets produced on the outer surface of the refrigerator due to condensation of moisture from the air to get inside the flask; these drops flow past the junction of the refrigerator and the flask.

With the usual type of refrigerators of the Soxhlet, Rodemacher system and especially other more simplified systems, in an extraction flask, despite

on thin sections or well-chosen cork stoppers, some water is always observed.

The proposed extractor has the complete absence of this serious drawback.

The subject matter of the invention.

Claims (2)

1. Extraction apparatus for hot extraction, characterized in that, in order to simplify the apparatus and in order to discharge water from the upper parts of the extraction flask, condensed from the air vapor surrounding the refrigerator, the latter in its upper part is provided with a mushroom-like extension forming freely suspended on the neck flask umbrella-shaped canopy. 2. When using the device according to claim 1, use cap B, fitted with hooks a for hanging it on processes in test tubes-cooler B.