The extraction tank is a commonly used leaching and extraction equipment in the pharmaceutical and chemical industry, which is particularly suitable for the leaching and extraction of the components contained in plant products. The structure has a tank body, a screw propeller or a propeller with an axial position device in the tank body, which is connected with a rotating shaft disk outside the tank body. It is characterized by a set of reclining continuous countercurrent leaching and extraction single tanks, which are separated from each other. The feed port is connected with the feed port to form a communicating device. The upper part of the lower end of each single tank has a feed port, the lower part has a residual liquid discharge port, and the upper part of the tank body has a liquid inlet or exhaust port.
The dynamic extraction tank is mainly used for the decoction extraction and heat reflux extraction of Chinese medicinal materials with water or organic solvent as the medium under agitation. And during the extraction process, the volatile oil components can be recovered at the same time. The extraction tank has high extraction efficiency for the effective ingredients of large quantities of medicinal materials; saves energy and extracts the effective ingredients more fully. The extract contains a higher concentration of medicines. Working principle: The entire extraction process of the equipment is completed in a closed circulatory system. It can be extracted under normal pressure or under pressure. Whether it is water extraction, alcohol extraction, oil extraction or other purposes, the specific process requirements have traditional Chinese medicine. The factory cuts it out according to the performance requirements of the drug.
The extraction tank is a multi-purpose equipment designed for the boiling and extraction process of a Chinese medicine factory. In this process, it can extract, recover alcohol, and separate volatile oil. In addition to the main equipment of the extraction tank, this equipment is also equipped with a foam trap, a cooler, and an oil-water separator. These equipments are made of stainless steel where they come into contact with drugs, and the heating interlayer has been strictly tested by the pressure vessel inspection department. The extraction process of this equipment is composed of a condenser, an oil-water separator, etc., and is completed in a completely sealed and recyclable system, and at the same time, the organic solvent is recovered from the waste residue.
Extraction principle:
(1) Such as water extraction: water and traditional Chinese medicine are put into the extraction tank, and the heat source for the interlayer is started. After the tank boils, the heat source is reduced and the tank is kept boiling. The maintenance time depends on the extraction pharmacological process. For closed extraction, cooling is required. Water cools the steam and returns to the extraction tank to maintain circulation and temperature.
(2) Such as alcohol extraction: first add medicine and alcohol to the tank, which must be sealed, give the interlayer heat source steam, turn on the cooling water to reduce the supply of heat source when the tank reaches the required temperature, so that the rising vaporized alcohol will flow back into liquid alcohol after passing through the condenser. That is, in order to improve efficiency, a pump can be used for forced circulation, so that the liquid medicine is sucked out from the lower part of the tank through the pump, and then the upper inlet of the cylinder returns to the tank to relieve local channeling.
(3) Oil extraction: first add the Chinese medicine and water containing volatile oil into the extraction tank, open the circulation valve of the oil separator, adjust the bypass return valve, open the heat supply valve and open the cooling water for cooling when the temperature reaches the volatilization temperature. The liquid medicine should be kept at a certain height in the separator to separate it, and the oil-water separator should be used alternately.
(4) Recycling oil: add alcohol into the cylinder, turn on the cooling water for the steam, and then open the recovery valve.
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