The utility model discloses a combined
plant oil countercurrent extraction device, including the pre -immersion dredging residue device of series connection in proper order, multistage scraper pre -immersion
machine and
sieve plate type extractor, each scraper pre -immersion
machine is obliquely arranged, and the middle baffle is fixed below upper chain, and the downlink section and the uplink section form the countercurrent channel of material and
solvent, the
sieve plate type extractor has upper and lower
sieve plate and multistage oil bucket, and each level forms the cycle of spraying - collection - re - spraying, and dry material slide
pipe enters first - class scraper pre -immersion
machine through feed
temporary storage box, feed
rotary valve, and fresh
solvent enters the last stage spraying of sieve plate type extractor, and the last stage oil bucket outlet of extractor is connected with the
solvent inlet of last - class scraper pre -immersion machine through mixed liquid extraction pump, and the solvent outlet of pre -immersion dredging residue device is connected with the inlet of mixed liquid
temporary storage tank, and the bottom outlet of mixed liquid
temporary storage tank is connected with
evaporation unit through
evaporation feed pump. The device can improve the penetration and
diffusion condition, reduce
residual oil and improve the extraction efficiency.