黑液过滤机是现在国际上过滤制浆黑液先进的新型设备，是在吸收近期引进的新技术的基础上研制开发的新一代黑液过滤设备，采用高速转子和微孔过滤鼓等新结构。在压力状态下工作，比目前国内采用传统的圆网式黑液过滤机有过滤能力大、滤液洁度高、技术装备水平高等优点。适应于过滤制浆造纸厂的蒸煮黑液，也可作为过滤其它废液，废水的环保设备。
黑液过滤机在造纸过程中，由黑液提取机提取出来的浓黑液及由洗涤分离出来的稀黑液都有一定数量的小纤维及多种残渣，如将此种黑液直接送去蒸发，容易产生管垢，影响蒸发效率，并且造成纤维流失。因此在黑液送蒸发之前要经过处理，以分离其中的纤维。
经过黑液提取挤压机提取的高浓、或低浓（高温）黑液进入XHGL过滤机圆网笼外侧，在圆网笼内负压的作用下，黑液通过网进入圆网笼内而得到净化，纤维将被留在网上，在网笼的转动下，浆经压辊的连续挤压，纤维（浆）将被压干。该纤维过滤机为封闭式结构，不但外形美观，而且避免了黑液温度的损失，以便于后序阶段黑液的蒸发浓缩。
Black filter paper in the process of extraction of black liquor by the plane's black liquid extracted and isolated by washing the thin black liquor have a certain number of small fibers and a variety of residue, such as black liquor directly Sent to evaporation and it is easy for dirt control and affect the efficiency of evaporation, and resulted in the loss of fibers. Therefore Black sent at evaporate before the deal to go through to the separation of the fibers.
After extraction of black liquor extruder extract high-concentration or low concentration (temperature) into the black liquor XHGL rotary filter cage lateral, in the role of negative pressure rotary cage, through the network into the black rotary cage Be clean, the fiber will be left in the on-line, the net cage in the rotation, the plasma pressure by the roll of squeezed in a row, fiber (pulp) pressure will be dry. The fiber filter for closed-end structure, shape not only beautiful but also to avoid the loss of temperature black liquor, in order to facilitate the later stage of the sequence of black liquor evaporation.
After extraction of black liquor extruder extract high-concentration or low concentration (temperature) into the black liquor XHGL rotary filter cage lateral, in the role of negative pressure rotary cage, through the network into the black rotary cage Be clean, the fiber will be left in the on-line, the net cage in the rotation, the plasma pressure by the roll of squeezed in a row, fiber (pulp) pressure will be dry. The fiber filter for closed-end structure, shape not only beautiful but also to avoid the loss of temperature black liquor, in order to facilitate the later stage of the sequence of black liquor evaporation.
