Experimental device for pharmacology

Abstract

The invention discloses an experimental device for pharmacology, and relates to the technical field of chemical medicine preparation equipment. The device comprises a supporting frame and a condensation pipe which is placed obliquely relative to the horizontal plane, an evaporation dish is fixedly placed at the top of the supporting frame, and an alcohol lamp used for heating the evaporation dish is placed at the bottom of the supporting frame; the condensation pipe comprises an outer pipe and an inner pipe, the upper end of the inner pipe of the condensation pipe is communicated with a gas collecting pipe penetrating through the condensation pipe, the lower end of the gas collecting pipe is fixedly provided with a communicating cover used for being clamped on the upper portion of the interior of the evaporation dish, and a ferrule is fixedly installed on the lower portion of the inner wall of the inner pipe of the condensation pipe. According to the invention, the inner cavity of the condensation pipe is continuously kept at a lower temperature in a manner of injecting cooling water into the condensation pipe, so that the temperature of a crystallization wall surface is not increased along with continuous attachment of gas when the equipment works for a long time, the desublimation efficiency of medicine substances is effectively ensured, and the equipment is more favorable for extracting a large number of medicines at one time.

Description

technical field [0001] The invention relates to the technical field of chemical preparation equipment, in particular to a pharmacological experimental device. Background technique [0002] In pharmacological drug experiments, the method of sublimation and desublimation is often used to extract the active ingredients of drugs. There are two main methods of operation using desublimation: [0003] (1) Adsorb the sublimated gas by setting a glass tube with a small opening on the top and a large bottom on the upper cover of the evaporating dish, and poking a vent on the filter paper of the pipeline when the gas circulates normally, and using the gas to adsorb on the glass wall to achieve desublimation crystallization; [0004] (2) Place the flask with condensate on the beaker, and use the cooler temperature at the bottom of the flask to desublimate the gas and adhere to the bottom of the flask. [0005] The above two methods of extracting crystals have certain limitations. When...

AI Technical Summary

Problems solved by technology

[0005] The above two methods of extracting crystals have certain limitations. When the crystals are attached too much, the extraction equipment will easily lead to the drop and loss of crystals. In addition, the sublimation gas temperature of the equipment under long-term work will cause the glass to As the wall temperature rises, the efficiency of sublimation crystallization decreases with the increase of working time, which is not conducive to the extraction of crystallization by the equipment working for a long time

Images