XDL low consistency desander is an advanced equipment for pulp purification. It uses the different proportion of fiber and impurities to separate the heavy impurities from the pulp, so as to achieve the purpose of pulp purification. The equipment has a wide range of applications. It can be used not only for the roughing and purification of high energy pulp, but also for the cleaning and purification of low consistency pulp before paper machine. It can be used not only in the production of chemical pulp and semi chemical pulp, but also in the production of mechanical pulp waste pulp. It is widely used in the production of cardboard, corrugated paper, cultural paper, newsprint and toilet paper, especially in the purification of waste pulp and semi chemical straw pulp