The hydraulic pulper is an equipment used in the paper industry to break pulp board, waste paper, and waste paper boxes. Pulp, paper material, and water flow are sucked along the central axis and thrown out from the outer circumference of the rotor at a high speed, forming a strong turbulent circulation. The pulp and paper are broken and dissociated strongly in the liquid state.thrown out of the rotor at high speed, forming a strong turbulent circulation. Due to the strong impact and tearing of the blade on the pulp and the huge friction between the liquid layers with different velocities, the pulp and paper are strongly broken and dissociated in the water.