Detailed introduction
　　Extraction tank is a common extraction equipment in pharmaceutical and chemical industry. It is especially suitable for extracting the components contained in plant products. The structure has a tank body, a screw propeller or a slurry propeller with an axial position device in the tank body, which is connected with the rotating axle disc outside the tank body. The structure is characterized by a group of inclined continuous countercurrent leaching extraction single tanks, which are connected with each other's outlet and inlet to form a connector. The upper part of each single tank body has an inlet opening at the lower end, a residual liquid outlet at the lower part, and an upper part of the tank body. There is a liquid inlet or an exhaust port, and the lower part has an outlet.
　　Working Principle of Extraction Tank: The whole extraction process of the equipment is completed in a closed circulating system. It is feasible to extract under normal pressure. It can also be extracted under low pressure. Whether it is water extraction, alcohol extraction, oil extraction or for other purposes, the specific technological requirements of the equipment are cut out by the traditional Chinese medicine factory according to the requirements of drug performance. The working principle of the extracting tank is simple decocting process. Chinese herbal medicine is soaked in water and heated by steam. After a certain period of time, the effective ingredients are extracted. The decocting time is decided by the performance of different materials. The dosage is different because of the shape of Chinese herbal medicine and the difficulty of extracting the effective ingredients. It can not be uniformly stipulated. It is suggested that the dosage should not exceed the standard. When extracting aromatic oil, secondary steam passes through condensation. After cooling, oil and water enter the oil-water separator. Light oil is discharged from the upper part of the separator and heavy oil is discharged from the lower part. When water is discharged through overflow or reflux (see pipe orifice and installation schematic diagram for the specific process), vacuum liquid is needed after decoction, which can not only shorten the time of liquid discharging, but also shorten the time of liquid discharging. The main function is to drain the effective residue from the residue and avoid waste. Drug slag arch knot (commonly known as "bridge") when the slag is difficult to discharge, drive the lifting cylinder, so that the lifting rod up and down for reciprocating motion, to help break the arch out of the slag, the slag is basically exhausted.
　　Several common types of extraction tanks:

　　Mushroom extractor

　　Oblique cone extractor

　　Straight barrel extraction tank

Straight cone extractor

　　2. Principle and application of multi-functional extraction tank:
　　The multi-functional extraction tank is suitable for the process operation of atmospheric pressure, decompression, pressure, decoction, warm soaking, percolation, forced circulation, thermal reflux, aromatic oil extraction and organic solvent recovery in Chinese herbal medicine, plant, animal, food and biological medicine, chemical industry, etc. In the manufacturing process, the equipment adopts advanced sealing method, heating and reflux method to meet the requirements of GMP specification. It is widely used in the production of Chinese patent medicine at home and abroad.
　　1. Multifunctional extraction tank belongs to pressure vessel. Provide Quality Technical Supervision Bureau pressure vessel inspection certificate.
　　2. High heat transfer area, effectively solve defoaming and defoaming. It has good effect on solvent recovery and volatile oil separation. The tank body is equipped with CIP rotary cleaning balls, temperature measuring instruments, explosion-proof shooting lamps, mirrors, fast-opening feeding doors, etc. to ensure easy and safe operation, and fully conform to GMP standards.
　　3. The equipment adopts multi-cylinder safety valve. Advanced sealing technology can make the equipment operate safely and reliably under various conditions, such as normal pressure, negative pressure and positive pressure.
　　4. The discharging door has a bottom heating function, which makes the medicine in the tank heated evenly and can be fully extracted.
　　5. Equipment supply includes: defoamer, condenser, cooler, oil-water separator, filter, cylinder console and other accessories.
　　6. According to the form, it can be divided into regular cone, oblique cone, inverted cone, mushroom and straight cylinder. Users can choose the type according to their needs.
　　The extraction tank is a multi-purpose equipment designed for the boiling and extraction processes of traditional Chinese medicine factories. It can extract, recover alcohol and separate volatile oil in this process. In addition to the main equipment of the extraction tank, the equipment is also equipped with foam trap, cooler, oil-water separator, etc. Stainless steel is used in all the contacts between these equipments and drugs. The heating sandwich is strictly inspected by the pressure vessel inspection department. The equipment is made up of condenser, oil-water separator and so on. It is completely sealed and circulated in the system. At the same time, the organic solvent is recovered from the waste residue.  Extraction principle: (1) If water extraction: water and traditional Chinese medicine are loaded into the extraction tank, heat source of interlayer is given. After boiling, heat source is reduced and boiling in the tank is maintained. Maintenance time depends on the extraction pharmacological process. For example, cooling water is needed for closed extraction, so that the steam body is cooled and returned to the extraction tank to maintain circulation and temperature. (2) For example, alcohol extraction: first add medicine and alcohol into the tank must be sealed, give interlayer heat source steam, open cooling water to reduce the supply of heat source when the tank reaches the required temperature, so that the rising vapor alcohol can be refluxed into liquid alcohol through the condenser. In order to improve efficiency, the pump can be used to force circulation, so that the liquid medicine can be sucked from the lower part of the tank through the pump and then imported back into the tank through the upper part of the cylinder, and the local ditch can be removed. Flow. (3) Oil extraction: First, add the Chinese herbal medicine and water containing volatile oil into the extraction tank, open the circulating valve of the oil separator, adjust the bypass return valve, open the cooling water when the heat source valve reaches the volatilization temperature for cooling, and keep a certain height in the separator to separate the coolant, and then rotate the oil-water separator. (4) Recovery of oil essence: add alcohol into the cylinder, open the cooling water to the steam, and then open the recovery valve.
　　Summary of Extraction Tanks
　　Extraction tank is to extract some effective ingredients such as collagen, polypeptide, sugar, tea polyphenols, pigments and so on from a certain kind of substances. Extraction cans are mainly used in traditional Chinese medicine, condiments, sugar making, pesticides and other industries. The most widely used are Decoction of traditional Chinese medicine and extraction of health products. The extraction tank is suitable for water extraction, ethanol extraction, decoction, reaction, recovery and other technological processes. It can be used in one tank for many purposes, and multi-process engineering can be realized.
　　There are many kinds of extracting cans, most of which are stainless steel extracting cans. They can be divided into static extracting cans, multi-functional extracting cans, dynamic extracting cans, food multi-functional extracting cans, chemical multi-functional extracting cans, traditional Chinese medicine multi-functional extracting cans, health products multi-functional extracting cans and so on.
　　2. Structure of extraction tank
　　The extraction tank is mainly composed of seven parts: main tank (extraction tank), foam trap, condenser, cooler, oil-water separator, filter and pump. The extraction tank is the main tank, and the extraction tank is the main body of the extraction reaction. In the extraction tank, raw materials are decocted, heated, cooled, evaporated and refluxed. The extraction tank is usually discharged by the slag discharging door, which is convenient, fast and safe. A quick-loading cover is arranged on the top of the foam trap to facilitate the disassembly of the defoaming component structure, and the built-in defoaming component structure is easy to disassemble and clean. Condensers, coolers, vapor-liquid separators and filters are designed according to actual conditions, such as: working pressure, heat transfer area, shell wall thickness, tube specifications, etc.
　　3. Basis for Selection of Extraction Tank
　　The main factors that should be paid attention to in the selection of extraction tank are as follows:
　　Material characteristics: such as viscosity, density, water absorption, volatility, corrosion and so on, the particularity of the material should be specified.
　　Working Conditions: Use Temperature and Pressure
　　Comprehensive technical conditions: heating time, treatment time, control system requirements, process orifice equipment instructions, plant conditions, water and electricity situation instructions.
　　Reference Table for Selection of Specifications of Common Extraction Tanks
　　Specification TQ-0.5 TQ-1.0 TQ-2.0 TQ-3.0 TQ-4.0 TQ-6.0 TQ-8.0 TQ-10
　　Effective volume 500L 1000L 2000L 3000L 4000L 6000L 8000L 10000L
　　Design pressure in tank is 0.09 Mpa
　　Design pressure of jacket is 0.3Mpa
　　Compressed air pressure 0.6-0.7 Mpa
　　Diameter of feeding gate 400 500 500 500
　　Heating area_2.43.04.7 6.5 8 11 12 15
　　Condensation area_8 12 15 20 30
　　Cooling area 11.51.51 223
　　Diameter of Slag Discharge Gate 600 800 800 1000 1000 1200 1400 1500
　　Heating steam nozzle 20 25 32 40 50 50 65
　　Exhaust port 50 65 80 100 125 150 150
　　Cooling nozzle 32 40 50 50 50 65 70
　　Description: The above formulation is standard and can be customized according to customer's requirements. For example, the internal and external pressure can be adjusted, the diameter of slag discharge door, the diameter of feed port, cooling and condensation area can be adjusted. Detailed parameters, please call.