NLS Series Inflow Pressure Screen

Outstanding Features

1. Small motor power , high production capacity, energy saving.

2. Inflow structure, low pulse, good effect of homogenate.

3. No gaskets companion flange pulp outlet, inwall is polished. Seamless connection of flow pipeline, no fiber hitching.

4. Advanced structure, sturdy and durable, convenient disassembly and assembly, simple operation, less malfunctions for continuous working, low maintenance cost.

5. Long pulping residence time, sufficient fiber relief, low rate fine fiber loss.

Working principle

NLS series inflow pressure screen is a continuing screening equipment under the fully closed position with pressure.

When works, the pulp enters into the outside of screen drum along the tangent direction through the pulp pipe. Qualified pulp enter into screen drum through the sieve seam (hole), with the help of pressure difference between inside and outside of screen drum, then come out through the pulp pipe.

The pulp and impurities which can not through the sieve seam (hole) fall down to the bottom, and come out from the discharge pipe. Rotating blade outside the screen drum can produce a moderate pressure, which improves the circulation flow of pulp, its tail will produce a negative pressure, which has an effect of backwash sieve seam (hole).It can prevent the sieve seam (hole) congestion, and pulp can smooth enter through the sieve screening (hole) from the surface constantly, which ensures the continuous operation.

Technical Data

Screen Area(m²) 0.6 1 1.5 2 3 4 5 6 7
Concentration of Input Pulp


Production capacity(Screen hole(t/d)) 30-60 70-130 110-160 140-260 250-400 260-520 350-600 420-700 500-900
Production capacity(Screen slot(t/d)) 25-45 55-80 80-120 100-160 150-300 180-320 220-400 260-480 350-600
Pressure of inflow pulp(Mpa) 0.1-0.4
Motor Power(Kw) 7.5-15 22 30 37 45 55 75 80 110