CSW-50 Screw Sand Washer ( Spiral Sand Washing ) 25-45 m3/h

The CSW-50 screw sand washer stands as CONSTMACH's engineering response to the demanding requirements of aggregate processing operations. This model delivers a practical washing capacity range of 25 to 45 cubic meters per hour, making it particularly suitable for operations that need reliable sand cleaning without oversized equipment footprints. The unit's 500mm diameter screw, extending 5,000mm in length, creates an effective washing zone that systematically removes clay, silt and other unwanted fines from sand and gravel materials.

What makes this particular model noteworthy is its focus on materials in the 0-3mm and 0-7mm range. These size fractions represent the most challenging materials to clean in aggregate production. Clay particles tend to coat these finer materials more stubbornly than larger aggregates, and standard washing methods often struggle to achieve proper separation. The CSW-50 addresses this through its spiral conveying action, which lifts material through a washing chamber while water flows countercurrent to the material movement. This process ensures thorough contact between water and contaminated aggregate.

The screw operates at 24 revolutions per minute, a speed carefully calculated to balance washing efficiency with material handling. Too fast, and materials don't get adequate washing time. Too slow, and capacity drops while wear increases. This rotational speed, combined with the unit's dimensions, creates the optimal residence time for effective cleaning. The 4kW motor provides sufficient power to maintain consistent operation even when processing heavily contaminated feed material.

CONSTMACH built the CSW-50 around a heavy steel plate construction that directly impacts operational longevity. Aggregate washing environments are harsh. Abrasive materials, constant water exposure and continuous vibration all contribute to equipment degradation. The robust body design counters these factors, but the real engineering consideration shows in the gear box specification. The oil-lubricated heavy-duty gear box wasn't selected from a catalog; CONSTMACH's engineering team designed it specifically for sand washer applications. This custom approach means the gearing accounts for actual operating loads, shock loads from material surges and the service factors that determine whether equipment lasts years or decades.

Maintenance accessibility defines the CSW-50's practical value. The replaceable rubber paddles represent a smart design choice. These paddles do the physical work of moving material up the screw flight, and they wear over time. Making them replaceable means operators can restore equipment performance without replacing entire screw assemblies. The single or twin shaft configurations offer operational flexibility based on specific site requirements and material characteristics.

Water consumption matches capacity at 25-45 cubic meters per hour. This one-to-one ratio between material throughput and water usage reflects efficient washing design. Some systems require excessive water to achieve cleanliness targets, creating disposal challenges and operational costs. The CSW-50's water requirement stays proportional to its processing capacity, simplifying water management and recycling system design.

At 2,800 kilograms, the unit represents substantial construction without becoming unwieldy for transportation or installation. This weight primarily comes from the steel fabrication and drive components rather than unnecessary mass. The result is equipment that feels solid during operation but doesn't require extraordinary foundation preparation or lifting equipment during setup.

For concrete production facilities and crushing plants processing materials with high clay content, the CSW-50 delivers the cleaning performance needed to meet specification requirements. Clean aggregate isn't just about appearance; it directly affects concrete strength, workability and durability. This washer removes the contaminants that compromise these properties.