The percolation method is a method of continuously adding leaching solvents to the crude powder of medicinal herbs to allow it to permeate through the powder, and the leaching solution flows out from the lower outlet. During percolation, the solvent seeps into the medicinal layer. The percolation method is a traditional medicinal herb The layer continuously adds extraction solvent and dissolves a large amount of soluble substances from top to bottom through the medicinal layer. As the concentration increases and the density increases, it moves downward and replaces the position with the upper layer extraction solution, resulting in a good recovery The concentration difference allows for better natural diffusion, resulting in a better leaching effect than the leaching method and more complete extraction.

1、 Components of the percolation tank Most of them are composed of a cylinder, an elliptical head (or flat cover), a pneumatic slag gate, a pneumatic operating table, etc., which have the characteristics of uniform distribution and convenient slag removal. 2、 Application scope of percolation tank This equipment is suitable for percolation operations in industries such as traditional Chinese medicine, plants, animals, food, and chemicals. Non organic medicinal materials such as frankincense, rosin, and aloe vera soften into clumps when exposed to solvents, which can block the pores and cause dissolution The agent cannot pass evenly through the medicinal herbs and should not be soaked. This method can be used to extract other medicinal herbs. 3、 Classification of percolation methods for percolation tanks The percolation method can be divided into single percolation method, heavy percolation method, pressure percolation method, and counter current percolation method according to different operating methods. 4、 Characteristics of percolation tank 1. Solvent distribution; 2. Easy slag removal; 3. Extract security; 4. The soaking process effect of seepage. 5、 Working principle of percolation tank The percolation method is a soaking method in which a leaching solvent is continuously added to the medicinal powder to allow it to permeate through the powder, and the leaching solution flows out from the lower outlet of the percolation tank 6、 Main technical parameters

Specification and model	SLG500	SLG1000	SLG2000	SLG3000
Full volume	600	1200	2300	3200
Design pressure inside the tank	Atmospheric pressure
Diameter of feeding port	300	400	400	400
Diameter of slag outlet	400	600	800	800

Quick open the safety type slag discharge door It can automatically open and close the tank cover, adopts three cylinder control, and is equipped with a safety device to prevent accidental operation, with a high safety factor, suitable for use in small and medium-sized slag outlets.	Rotating slag gate The fully automatic opening and closing of the tank lid can achieve high temperature and high pressure extraction, and the rotating ring can reach more than 3Bar, providing more choices for the extraction process and adapting to some special process requirements. It is safe and reliable, with sufficient safety protection functions, and the extraction tank has no leakage.	Large diameter slag discharge door Fully automatic opening and closing of the can lid; It can achieve high temperature and high pressure extraction, providing more options for the extraction process. This slag gate is suitable for the slag extraction method of large-diameter reverse push extraction tanks, with a high safety factor.