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The working principle of inflow pressure screens for pulping involves using differential pressure and mechanical force to effectively separate contaminants from the pulp.
Working principle:
Inlet and pressure difference: The pulp enters the flow pressure screen through the inlet, where it encounters a pressure difference. This pressure differential is created by the design of the screen and the flow dynamics within the system.
Screening Zone: Within the screen, the pulp meets the screening zone where contaminants such as dirt, chips and chips are separated from the pulp. Screens are designed with small openings or slots that allow pulp fibers to pass through while retaining contaminants.
Rotors and Foils: The screen is equipped with rotors that generate mechanical force to aid in the separation process. The rotor can be equipped with foils or other features to enhance agitation and movement of the pulp within the screen.
Contaminant removal: When the pulp flows through the screen and encounters the rotor and foil, the contaminants are effectively removed and separated from the pulp. The combination of pressure difference and mechanical force facilitates effective removal of impurities.
Clean pulp outlet: After passing through the screening area and mechanical stirring, the clean pulp without contaminants leaves the screen through the outlet. Separated contaminants are discharged from the screen through a separate outlet or collection system.
Continuous operation: The inflow pressure screen is designed to operate continuously to ensure consistent flow of clean pulp while effectively removing impurities and maintaining pulp quality in subsequent papermaking processes.
Overall, the working principle of the inflow pressure screen involves the application of pressure differential, mechanical agitation and precise screening to achieve efficient separation of contaminants from the pulp, helping the paper industry to produce high-quality pulp.
| Nominal Area ㎡ | 0.46 | 0.75 | 1.00 | 1.32 | 1.90 | 2.54 | 2.77 | 3.36 | 5.37 | 6.40 | 7.66 |
| Inlet consistency % | 0.15 - 1.0 | ||||||||||
| Capacity - hole (t/d) | 20-40 | 30-60 | 60-100 | 70-130 | 110-160 | 140-260 | 200-300 | 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 | 220-480 | 350-600 |
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