Vertical low concentration hydraulic pulp disperser is the main equipment used in the papermaking and pulp molding industries to crush pulp boards, paper machine damaged paper, commercial waste paper, and humidity paper. It is suitable for fiber crushing, separation, pulp purification, and rough selection. This equipment has been further improved in technology and has advantages such as strong crushing ability, short crushing time, convenient operation and maintenance, continuous and intermittent feeding, and only has a dissociation effect on the slurry without a cutting effect.