Inflow Pressure Screen

Product introduction：

NLS inflow pressure screen (foil set outside the screen basket) is a comparatively advanced screening equipment around the world in modern time, featuring high screening quality, bigger capacity and lower pulp pulse, applied to fine screening of wood pulp, straw pulp and waste paper pulp, especially as a screening equipment used before the web of paper machine.

Working Principle

Inflow pressure screen works under pressure in a completely close state to continuously screen. When in operation, pulp slurry tangentially enters the space between screen basket and machine shell from inlet pipe at upper part of the machine body. Under force of pressure difference between inside and outside the basket, accepted pulp passes the screen holes or slots and flows into basket, then discharged through accept pipe at bottom part of machine while debris or rejects slurry failing to pass will drop to bottom and then be discharged through reject pipe. The rotating foils outside the basket produce mild pressure to improve the flow of pulp slurry and negative pressure produced from the tail end causes backflush to holes or slots to prevent fibers or contaminants from binding over the surface, thus to ensure continuous work of screen.

Technical Data

Model	NLS20	NLS21	NLS225	NLS22	NLS23	NLS24	NLS255	NLS25	NLS26	NLS27	NLS28	NLS29
Nominal Area (㎡)	0.46	0.75	1.00	1.32	1.90	2.54	2.77	3.36	4.37	5.37	6.40	7.66
InletConsistency (%)	0.15-1.0
Capacity-Hole (T/D)	20-40	30-60	60-100	70-130	110-160	140-260	200-300	250-400	260-520	350-600	420-700	500-900
Capacity-Slot (T/D)	15-25	25-45	50-75	55-80	80-120	100-160	120-250	150-300	180-320	220-400	260-480	350-600
Inlet Pressure (MPa)	0.1-0.4						0.1-0.6
Motor Power (KW)	15	18.5	22	22	30	37	45	45	55	75	90	110

Work Site

Komai Paper

Daoqin Paper