Grit Classifier

The Grit Classifier is a key equipment in the sand-water separation link of domestic sewage treatment projects. Its design is centered on "efficient dehydration and compact structure" and is optimized for processing sand-water mixtures discharged from front-end equipment such as cyclone grit settling machines. The WSF type grit classifier is mainly used to further separate the sand-water mixture discharged from equipment such as cyclone grit settling machines.

As a representative of light sand-water separation equipment, the core innovation of the WSF type grit classifier lies in its shaftless spiral structure. Traditional shafted spirals are prone to jamming due to sand entanglement, while the shaftless design significantly reduces the risk of clogging and mechanical wear by strengthening the rigidity and sealing of the spiral blades. The sand-water mixture first enters the separation tank through the feed port. Under the action of gravity, the water flow is discharged from the overflow weir at the top of the tank body, while the sand settles to the bottom of the tank.

From the structural details, the spiral blades of the WSF type grit classifier are usually made of wear-resistant materials to adapt to high wear conditions. When the equipment is running, the screw shaft speed is calculated to ensure the sand conveying efficiency and avoid the water flow disturbance caused by excessive speed affecting the separation effect. The operator can adjust the liquid level according to the incoming sand-water ratio to ensure the balance between separation efficiency and water cleanliness. In addition, the drive device of the equipment is equipped with an overload protection function, which automatically shuts down when the sand volume suddenly surges or foreign objects are stuck, effectively avoiding mechanical damage.

In domestic sewage treatment plants, the WSF type gravel classifier not only reduces transportation costs due to its low water content sand output, but also reduces the risk of leachate during landfill or recycling. In the field of industrial wastewater treatment, the equipment is also suitable for food processing, textile printing and dyeing and other wastewater pretreatment links with high sand content. Its closed structure design can also effectively control the spread of odor. Through modular combination, the WSF type equipment can also be expanded into a multi-stage separation system to meet the needs of sand particle size classification or higher dehydration rate, demonstrating its flexibility and reliability in solid-liquid separation technology.