Pentaerythritol mother liquor extraction tower

The utility model discloses a pentaerythritol mother liquor extraction tower which comprises an extraction tower main body, the top end of the extraction tower main body is fixedly connected with a sealing device, and the top end of the sealing device is fixedly connected with a reciprocating device. The reciprocating device, the air cylinder, the pushing rod, the mixing tank, the screen plate, the protective shell, the fixed disc, the screen holes and the mixing opening are matched, the inner air cylinder can be protected through the protective shell, meanwhile, the air cylinder moves up and down when liquid enters the mixing tank, extraction of the liquid can be further mixed, and the mixing efficiency is improved. Through the sieve plate, liquid can overflow from the interior of the sieve plate when the whole pushing rod pressurizes the liquid, the whole liquid can be pressurized through the fixing disc, the liquid needing to be extracted is discharged from the internal sieve holes, compression of differen