Sand traps OP are designed for removing sand and larger impurities in coarse contaminated waste paper processing lines directly behind the primary cleaning stage and then in any insufficient separation of sand from paper stock. They provide considerably higher protection of the following equipment (pumps, secondary cleaners, etc.) against contingent damage.

Design

Sand traps work independently or in a unit according to the actual onsite operating conditions. They differ from each other only in size and throughput. They belong to a family of centrifugal cleaners working with a free whirl and automatic discharge of impurities into a collecting box, being permanently rinsed by water (OP-25, OP30) or mechanical discharge of impurities (OP-40). The sand traps provide effective and yet economical screening of specifically coarse impurities also from very coarse pulped stocks Machine design and work safety are in compliance with the EU standards and EAC.

Machine design and work safety are in compliance with the EU standards and EAC

Sand traps are designed for:

• Protection of all the consecutive machinery in the stock preparation line against penetration of hard and abrasive impurities
• Economical cleaning of coarse impurities from highly contaminated paper stock
• Screening of coarse impurities in lines based on waste paper and in wood refining lines
• Individual work or work in a unit

Main parts

• Input body with working cone (1)
• Separating body with separating filler(2)
• Sight glasses (3)
• Gate valves (4) pneumatic and manual
• Collecting box (5)

Material

• All parts coming in contact with the stock are made of stainless steel
• Other parts are made of structural steel
• Collecting box is made of grey cast-iron