Application
Be suitable for all kinds of pressure screens in pulp-making systems and paper-making systems.
The sieve drum is made of stainless steel. There are two types of sieve plates: hole type and slot type, each with different specifications of sieve holes and sieve sizes. Users can choose according to the raw materials and use conditions. The sieve plate adopts drilling (milling seam) and electrolytic polishing processes to meet the requirements of smooth, smooth, and non-slurrying.
The sieve drum (pressure sieve sieve drum) is used to screen the pulp before the paper machine. The output pressure is stable and pulsed. Its structure is simple and easy to use, its screening effect is good, and the output is high, so as to give play to the good performance of the screen drum and achieve a good screening effect. The screen drum adopts a mechanical method to realize the connection with the supporting structure. Compared with the ordinary screening tool sieve drum, its opening rate is high, the production capacity is greatly improved, and the power consumption is lower.
Features
- High screening efficiency: due to the high pressure of materials along the tangent line into the screen, under the action of centrifugal force, qualified materials quickly pass through the screen drum depending on the pressure difference.
- Long service life: stainless steel screen drums, corrosion resistance, and wear resistance have a longer service life.
- Not easy to block: materials are evenly screened from top to bottom, and a V-shaped opening gap ensures the opening area and non-blocking of the screen drum and avoids high-density accumulation of sediment.
- Low maintenance cost.
The main structure of the screen drum
- The sieve plate is processed with 1-2mm stainless steel plate and welded into a cylindrical shape by argon arc welding. The outer circumference of the sieve plate is fastened with 3-4 copper rings to improve rigidity. The sieve plate and the copper ring are riveted with copper rivets, and the out-of-roundness error of the sieve drum is ∠0.3Mm.
- Fixing: The screen drum is fixed on the body with screws. The bottom of the screen drum must be closely matched with the bottom of the body, otherwise the slurry will flow out along the gap. Mix into the good pulp outside the screening room.
- Sieve mesh: The perforated smooth surface sieve is often used. The surface of the mesh is required to be smooth. In order to avoid slurry hanging, it is best to chamfer both sides of the mesh and have straight holes and taper holes. The shape, size and arrangement of the sieve holes should be determined according to the type of slurry, average fiber length, slurry concentration and the requirements of the screening process.
- Screen slits: Screen slits can also be used, the direction of the screen slits is parallel to the main axis, the slit width is 0.2-1 mm, the spacing is about 3 mm, and the opening rate is mostly 7-8%. The capacity is 30-50% lower than that of the perforated screen, and the processing is also difficult, but the quality of the good slurry is good.
Category
1.OUTFLOW SLOTTED SCREEN BASKET
Screen Basket
Features of product：
1. Own chrome coating equipment, hardness HV850-1100 degrees, thickness up to 0.3mm
2. Each product is customized;
3. More than 40 different types of bars, designed according to user requirements, the narrowest bar to 2.0mm, the widest bar to 4mm, can be used for longer fiber screening.
Main data
Diameter ≤2500mm,
Height≤3200mm，
Slot size ≥0.1mm，
Slot tolerance 95%+-0.02mm，5%+-0.03mm，
Cylindricity+-0.5mm，
Maximum Chrome coating thickness 0.3mm，Hardness HV>850
Optional material SUS304、SUS316L、SUS304+SUS316L
Usually used in coarse screen ,fine screen ,fiber separator , head box screen position ,etc
INFLOW SLOTTED SCREEN BASKET
Inflow slotted screen basket is widely used for fine screen or head box screen position.
Main data
Size: OD 1800 H1509 mm
Normally used in head box screen position.
