Countercurrent extraction device for spinning

A countercurrent extraction device for spinning, comprising an extraction box containing extraction liquid, wherein the extraction box is provided with a plurality of partition assemblies arranged at intervals, and the extraction box is partitioned into a plurality of extraction chambers by the plurality of partition assemblies;

• each of the plurality of partition assemblies comprises a first plate and a second plate, wherein the first plate and the second plate are both arranged at intervals, two ends of the first plate are fixedly connected to two sidewalls of the extraction box, and a first gap is provided between a lower edge of the first plate and a bottom wall of the extraction box;
• a lower edge of the second plate is connected to the bottom wall of the extraction box, a second gap is provided between a top edge of the second plate and a top wall of the extraction box, the top edge of the second plate is lower than a top edge of the first plate, and heights of a plurality of the second plates are gradually decreased along a flow direction of the extraction liquid;
• and
• a liquid cavity, configured for unidirectional flow of the extraction liquid from bottom to top, is provided between the first plate and the second plate in each of the plurality of partition assemblies.