Equipment usage:

This unit is suitable for the production of Chinese herbal medicines and productsExtraction and concentrationAromatic oil extraction and organic solvent recovery can meet various extraction requirements such as atmospheric pressure and negative pressure extraction, especially for low-temperature extraction and concentration of thermosensitive materials.

working principle:

Put the prepared prescription herbs intoExtraction tankInside, join at onceAfter soaking in 5-10 times the amount of herbal medicine solvent (solvent properties and addition amount according to process requirements) for the required time, turn on heating (direct steam heating is only used when extracting aromatic oil from water). After boiling for the process time, the higher temperature extraction solution can be continuously filtered through a filter screen from the bottom of the extraction tank to the filter, and then enter the concentrator. During concentration, steam is generated and enters the condenser, becoming a condensate that flows back to the extraction tank as a new solvent. The secondary steam generated in the extraction tank is condensed into a condensate by the condenser and flows back to the extraction tank. All the steam generated by the solvent is converted into condensate through heat exchange and returned to the extraction tank. The secondary steam is fully utilized in the process, forming a new solvent reflux to the extraction. Therefore, the solute and solvent in the medicinal herbs always maintain high gradient mass transfer and high-speed dissolution.

The new solvent dissolves the soluble substances in the medicinal herbs from top to bottom through the medicinal layer, reaching the bottom of the extraction tank and then being drawn into the concentrator. After repeating the above process, the solvent formed is subjected to multiple cycles of extraction concentration, and the extraction solution becomes colorless. At this point, the extraction solution stops being drawn into the concentrator. The concentrator continues to concentrate until the required specific gravity (1.1-1.3) of the liquid extract is reached, and then releases it for later use.

Equipment features:

1. The extraction time is short and the equipment efficiency is high. Due to the simultaneous concentration and extraction, the condensed solvent flows back to the extraction tank and passes through the medicinal layer from top to bottom, quickly dissolving the solutes in the medicinal materials.

2. Low energy consumption, as the concentrated secondary steam serves as the heat source for extraction, the extracted liquid drawn into the concentrator is at the same temperature as the concentrated liquid, which can save more than 50% of the heat source.

3. Save solvents, extract medicinal materials from the tank with only one solvent addition, and recycle them in a sealed device. Most of the solvents in the medicine residue and liquid can be recycled, so the amount of solvent used is small, the consumption is low, and the production cost is significantly reduced.

4. The yield of ointment can be increased by 10% -15% compared to traditional techniques, and the content of active ingredients can be doubled. Mixing devices can also be installed according to customer requirements, such as using dynamic extraction, to maintain a high gradient between the solute concentration in the medicinal material and the solute concentration in the solvent, which is more conducive to the rapid dissolution of solutes in the medicinal material, and significantly increases the yield of paste and active ingredients.

5. The equipment has a high utilization rate and can be extracted and concentrated separately or simultaneously. It is easy to operate, compact in structure, occupies a small area, saves intermediate storage tanks, and has low investment costs.

6. The entire equipment is made of stainless steel and produced in a fully sealed pipeline, which not only reduces environmental pollution but also eliminates the infiltration of heavy metals and bacteria, meeting GMP requirements.

Technical parameters: