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Pulp and Paper Equipment
Capacity: 20-250 t/d
This pressure screener is designed with an inward flow structure and is used for the fine screening of pulp for pulping systems and screening of pulp prior to entering the paper machines. This screening equipment consists of the screen body, rotor, cylinder, driving part and lifting device.
Main Features of the Pressure Screen
1. High Screening Efficiency
As the pulp enters the screen along a tangential direction under high pressure, fibers and coarse impurities are screened before the pulp enters the cylinder under centrifugal force. Accepted fiber will quickly pass through the screen cylinder depending on pressure differences between the inlet and outlet.
2. Long Service Life
Heavy impurities are filtered by using centrifugal force after the pulp enters the pressure screen, in order to reduce impact and wear to the rotor wing, and cylinder. It is also designed to extend the service life of the cylinder.
3. No Clogging
These pulps are screened in a uniform manner from top to bottom, without thickening and clogging, as the impurities are moved away from the screen cylinder.
4. It can replace the low frequency screen
Accepted pulp from the pressure screen come with a low pulse strength and can be directly delivered to the forming table without generating a disturbance.
5. High Quality Pulp
The screen cylinder is manufactured from stainless steel with a thin screen cut, significantly improving the removal rate of the impurities in the accepted pulp.
6. Low Maintenance Cost
The main shaft of the pressure screen comes with an advanced mechanical sealing system, making it more difficult to damage.
Technical Parameters of the Pressure Screen
Model |
SLNS-1 |
SLNS-2 |
SLNS-3 |
SLNS-4 |
Screening area (m2) |
0.6 |
1.2 |
2 |
3 |
Screen cut width (mm) |
0.15-0.55 |
|||
Inlet pressure (Mpa) |
0.1-0.25 |
|||
Outlet pressure (Mpa) |
0.01-0.04 |
|||
Screening consistency (%) |
1.0-2.0 |
|||
Capacity (t/d) |
20-60 |
25-90 |
40-150 |
50-250 |
Motor power (kW) |
15-18.5 |
22-30 |
37-45 |
55-75 |
Working Principle
The pulp enters the cavity between the screen body and the cylinder. By relying on the pressure differences between two sides of the cylinder, the accepted fibers will flow into the cylinder through holes, and be discharged from the lower outlet. The rejects left outside the cylinder will be removed from the screen through the discharge hole under the pulp pressure and pushed using a rotor. In addition, high speed rotation of the rotor can clean the cylinder.
Maintenance
1. The bearing needs to be kept lubricated, and must be greased once a week.
2. Regularly inspect the axis and ensure the temperature rise does not exceed 35º.
3. Do not screen metal and other large impurities.
4. The rubber oil seal should change once every six months to guarantee a high sealing performance.
Turn-key Projects
We can integrate the Paper Machine with a very deep experience in stock preparation supplying projects on the Turn-Key basis.
Paper Machine including:
Fine Paper Machine
Testliner Paper Machine
Kraft & Fluting Paper Machine
Coated/Uncoated Board Machine
Crescent Former Tissue Machine
Suction Former Tissue Machine
Fourdrinier Tissue Machine
Cylinder Former Tissue Machine
Stock Preparation including:
OCC Line
Deinking Line
Virgin Pulp Line
Broke Line
Q1: What is guarantee terms ?
A1: According to the international practice, performance and mechanical guarantee shall be for 1 year from the successful commissioning or 1.5 years from the date of bill of lading.
Q2: What is the production time ?
A2: Normally 2- 3 months, it depends on the machine type and scope of supply. But we can arrange the partial shipment according to customer’s foundation construction schedule.
Q3: Do you provide the inspection report of equipment ?
A3: Yes, we shall inspect the equipment and issue the Exworks Quality Certificate as well as the Product Inspection Report.
Q4: What is the standard packing for the machine?
A4: Normally wooden cases with fumigation. Unless otherwise specified, the equipment shall be packed in new and strong wooden cases and necessary measures shall be taken to protect the equipment from moisture, rain, rust, corrosion, shock and damages so as to make the equipment withstand repetitious handling, loading and unloading as well as long distance ocean and inland transportation.
Q5: If OEM services available ?
A5: Yes. We can make the machines under customer’s brand and logo.
Q6: What data/specification I shall provide for getting the quotation?
A6: Please provide the following main data of your required machine, we can make an offer to you accordingly.
Screen Area (m2) |
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Paper grade |
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Capacity (ton/day) |
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Motor Power (kW) |
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Stock Consistency (%) |
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Basket Slot Size (mm) |
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Inlet Pressure (MPa) |
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Raw Materials |
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Application |
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