The equipment is suitable for percolation operation in traditional Chinese medicine,food,chemical industry and etc.

The equipment is composed of tank body,taper body,oval seal head (or flat cover),pneumatic residue discharging door ,pneumatic operation bench and etc.It has such characteristics as equal solvent distribution and convenient residue discharging etc.

The percolation method is to add continuously leaching solvent into the rough powder of medicine materials to make it filtrate the medicine powder, and then the leaching liquid will flow from the bottom outlet.

During the percolation, the layer percolation method of solvent's filtering into the medicine material is to add continuously  leaching solvent  into the medicine material layer to make the solvent pass through the medicine material layer from top to bottom and dissolve large amount of soluble matters. After that, the concentration increases, and it will move downward after the density increases.

The leaching solvent at the upper layer or the thin leaching liquid will exchange the position and produce good concentration difference to make the scattering carried out smoothly .Thus,the leaching effect is better than the dipping method,and the extraction will be comparatively complete.