Pressure Screen,Pressure Screen before Paper Machine    

NLS Series Inflow Pressure Screen

It is widely used in the fine screening of wood pulp, straw pulp and waste paper pulp, especially suitable as the net filter before paper machine.

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

Technical Data

Type NLS0.6 NLS1 NLS1.5 NLS2 NLS3
Screen Area (m2) 0.6 1 1.5 2 3
Concentration of Input Pulp(%) 0.4-0.8
Capacity (Screen Hole) (t/d) 30-60 70-130 110-160 140-260 250-400
Capacity (Screen Slot) (t/d) 25-45 55-80 80-120 100-160 150-300
Pressure of Inflow Pulp(mpa) 0.1-0.4
Motor Power (kw) 7.5-15 22 30 37 45

Technical Data

Type NLS4 NLS5 NLS6 NLS7
Screen Area (m2) 4 5 6 7
Concentration of Input Pulp(%) 0.4-0.8
Capacity (Screen Hole) (t/d) 260-520 350-600 420-700 500-900
Capacity (Screen Slot) (t/d) 180-320 220-400 260-480 350-600
Pressure of Inflow Pulp(mpa) 0.1-.0.4
Motor Power (kw) 55 75 90 110

Technical Data

Type NLS8 NLS9 NLS10 NLS11
Screen Area (m2) 8.5 9.6 10.5 12
Concentration of Input Pulp(%) 0.4-0.8
Capacity (Screen Hole) (t/d) 600-1120 700-1200 770-1300 840-1400
Capacity (Screen Slot) (t/d) 400-720 440-800 480-880 520-960
Pressure of Inflow Pulp(mpa) 0.1-.0.4
Motor Power (kw) 110 132 160 160

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.

Services

servicesOffering comprehensive technical and business consultation services;
Proposing the most suitable scheme and equipment for our clients;
Designing and fabricating targeted products according to the special requirements of clients;
Training periodically high qualified service technician.


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