Lignin dissolving kettle

The utility model relates to the technical field of lignin processing, in particular to a lignin dissolving kettle. The sleeve is detachably connected with the stirring shaft and located at the end, away from the stirring motor, of the stirring shaft and located in the kettle body, spiral fan blades are arranged at the end, located in the sleeve, of the stirring shaft, and a plurality of stirring fan blades are sequentially arranged outside the sleeve from top to bottom. And meanwhile, the bolt fan blades located in the sleeve rotate synchronously, the raw materials deposited at the bottom of the kettle body are conveyed upwards through the sleeve and then output from the end of the sleeve, and the stirring fan blades are utilized again to be fully mixed with liquid in the kettle body. 本实用新型涉及木质素加工技术领域，具体涉及一种木质素溶解釜；套筒与搅拌轴拆卸连接，并位于搅拌轴远离搅拌电机的一端，且位于釜体的内部，搅拌轴位于套筒内部的一端设置有螺旋扇叶，套筒的外部设置由上至下依次设置有多个搅拌扇叶，启动搅拌电机，通过搅拌轴带动套筒转动，从而利用搅拌扇叶对釜体内的原料进行搅拌，同时位于套筒内的螺栓扇叶同步旋转，将釜体底部沉积的原料通过套筒向上输送，进而从套筒的端部输出，再次利用搅拌扇叶与釜体内的液体充分混合。