CN1442125A - Chinese medicine pot group type dynamic countercurrent extraction method - Google Patents

Abstract

A medicinal pot-group type dynamic counter-current process for extracting Chinese medicine features that several medicinal pots in a group are used for cyclic extraction severl times in such a manner that before each cyclic extracting, a solvent is first added to the raw Chinese medicinal materials in the last extracted pot, its extracted liquid medicine is used as the solvent for next pot, and so on. Its advantages are short period, high output rate and low energy consumption.

Description

The method of Chinese medicine pot group type dynamic countercurrent extraction

Technical field: the present invention relates to the method that a kind of herbal liquid medicine extracts, particularly a kind of method of Chinese medicine pot group type dynamic countercurrent extraction.

Background technology: the extraction production of the herbal liquid medicine during China Chinese medicine industrial undertaking produces, continue to use traditional single-pot extracting method for a long time always, the effort of both having taken a lot of work, the consumption of water, electricity, gas and material etc. is very big again, and feed liquid is separated difficult, yield is low, the production cycle is long, and difficult quality control and grasp are unfavorable for the industrialization and the modern production of Chinese medicine.

Summary of the invention: technical problem to be solved by this invention is: the method for provide a kind of and save labor, save energy and reduce the cost, extracting cycle is short, yield is high, quality is convenient to the Chinese medicine pot group type dynamic countercurrent extraction controlling and grasp.Its technical scheme is: a kind of method of Chinese medicine pot group type dynamic countercurrent extraction is characterized in that:

A. the extraction of the medicinal liquid of Chinese crude drug is one group with several jars, and each jar medical material circulates successively and extracts for several times in the group;

B. before each circulation was extracted, earlier to multiple extraction and be that a medical material drops into solvent in the last jar that extracts, its extracting solution was as the solvent of jar medical material thereafter, and each jar medical material circulates successively and extracts once thereafter;

C. the last jar medical material that extracts drops into dried medical material again after discharging medicinal residues, the tail tank that circulates successively and extract as next round jar group;

D. the each extracting solution of every jar of medical material in leaching process all through repeatedly obtaining behind the dynamic circulation countercurrent extraction.

Its technique effect is: extract owing to adopt pot group type to substitute traditional single-pot, every jar of medical material is in each leaching process, adopt dynamic countercurrent extraction to substitute traditional static extraction process again, so both can extract the needs of producing according to traditional Chinese medicine liquid, the platform number of flexible combination jar group can effectively utilize the biphase Concentraton gradient of solid-liquid again, increase temperature difference, improve extraction rate, the concentration of extracting solution is increased, extracting cycle shortens; Also utilize medical material itself to make filter course when extracting, improved the clarity of medicinal liquid.Through experiment, compare with traditional extraction process, extracting method of the present invention, can make the solvent of extraction reduce 40-50%, save steam more than 40%, extract yield improves more than 20%, has very remarkable economic efficiency and technique effect, its process has science, advance, has established the technical foundation of industrialization, modern production for the extraction of Chinese medicinal herbs medicinal liquid.

The drawing explanation:

Fig. 1 is a process chart of the present invention:

Fig. 2 is a technological equipment connection diagram of the present invention.

Embodiment:

Present embodiment is one group with three jars, every jar of three times (referring to Fig. 1, the Fig. 2) of extraction that circulates successively.Before formal circulation is extracted, earlier Chinese crude drug and solvent are dropped in first extraction pot, after soaking under the temperature conditions of setting, filtrate pump is back in this jar by circulating pump, after repeatedly circulation was extracted, its extracting solution was sent into storage tank; Then, this jar dropped into solvent the second time, again after the extraction of soaking, circulate, its extracting solution pumps into second extraction pot as solvent, after Chinese crude drug same in the jar soaked, to this jar, after repeatedly circulation was extracted, its extracting solution was also sent into storage tank to circulating pump by being located at this jar with filtrate pump again; Drop into solvent for the third time to first jar again, after the extraction of soaking, circulate, its extracting solution pumps into second jar, after extracting through second jar medical material is soaked, circulates, its extracting solution pumps into the 3rd jar, as the solvent of the same Chinese crude drug of this jar, after the extraction of soaking, circulate, its extracting solution is sent into storage tank.So far, first jar Chinese crude drug has been finished three extractions, and second jar has been carried out extracted twice, and the 3rd jar has also been extracted once.Therefore, this jar group can formally enter the circulation extracting process process.At this moment, first jar can bleed off medicinal residues, drops into dried medical material again, as this group jar tail tank that the next round circulation is extracted.Its process of extracting that circulates successively is summarized as follows:

Second jar of input solvent extracts for the third time, and its extracting solution enters the 3rd jar, and the 3rd jar extracting solution enters first jar, and first jar extracting solution enters storage tank.Second jar bleeds off medicinal residues, drops into dried medical material again.

The 3rd jar of input solvent extracts for the third time, and its extracting solution enters first jar, and first jar extracting solution enters second jar, and second jar extracting solution enters storage tank.The 3rd jar bleeds off medicinal residues, drops into dried medical material again.

First jar of input solvent extracts for the third time, and its extracting solution enters second jar, and second jar extracting solution enters the 3rd jar, and the 3rd jar extracting solution enters storage tank.First jar bleeds off medicinal residues, drops into dried medical material again.With this extraction that circulates successively, every jar of medical material all extracts three times.

Claims (1)

1. the method for a Chinese medicine pot group type dynamic countercurrent extraction is characterized in that:

A. the extraction of the medicinal liquid of Chinese crude drug is one group with several jars, and each jar medical material circulates successively and extracts for several times in the group;

B. before each circulation was extracted, earlier to multiple extraction and be that a medical material drops into solvent in the last jar that extracts, its extracting solution was as the solvent of jar medical material thereafter, and each jar medical material circulates successively and extracts once thereafter;

C. the last jar medical material that extracts drops into dried medical material again after discharging medicinal residues, the tail tank that circulates successively and extract as next round jar group;

D. the each extracting solution of every jar of medical material in leaching process all through repeatedly obtaining behind the dynamic circulation countercurrent extraction.

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