Spiral sand washing machines are widely used in sand and gravel washing and grading equipment in industries such as construction, mining, and hydropower. Their core function is to achieve the triple effects of washing, dewatering, and grading of sand and gravel materials through the rotation and stirring of spiral blades. They are especially suitable for processing medium and fine-grained materials with high mud content and many impurities. The finished sand has high cleanliness and low stone powder loss, making it an indispensable key link in the manufactured sand production line.
Working Principle
The spiral sand washing machine is driven by a motor, with the impeller rotating slowly via a V-belt and a reducer. Materials (such as sand, gravel, and ore) enter the washing tank from the feed chute and are tumbled and agitated by the impeller to remove impurities from their surface.
• The material is tumbled and agitated within the washing tank by the impeller.
• During this process, collisions and friction occur between the materials and between the materials and the impeller and casing, which helps remove impurities such as mud and stone powder from the material's surface.
• Lighter impurities and foreign objects are carried away by the water flow and discharged from the drain outlet of the washing tank.
Product Structure
Rotary Spiral Shaft: The rotating shaft is the core component of the coarse aggregate washer. Its inlet end is equipped with blades for scrubbing; the rest of the shaft is conveyed to the outlet by a screw conveyor. Increasing the number of blades on the shaft improves the scrubbing effect; however, increasing the number of blades reduces the throughput.
Washing Tank: The washing tank holds the aggregate to be processed. The rotating shaft is installed inside the tank, where the aggregate is scrubbed and cleaned.
Upflow Classifier: The upflow classifier within the washing tank of the coarse aggregate washer helps optimize machine performance. The upflow helps to remove unwanted lightweight materials such as branches, sticks, and coal lumps with the wastewater.
Product Advantages
Spiral sand washing machines are particularly suitable for washing, grading, and removing impurities from medium, fine, and coarse-grained materials.
They possess powerful washing capabilities, effectively removing sand and gravel containing severe mud and impurities.
Due to their superior washing performance, they are commonly used in large-scale sand and gravel production lines.
