Single Screw Sand Washer Sand Washing Equipment

Single Screw Sand Washer

1.Product Introduction

The Single Screw Sand Washer is a high-efficiency mechanical device that utilizes rotating spiral blades within a water tank to wash, classify, and dewater sand and gravel materials. Its core structure includes an inclined U-shaped tank, a single spiral blade mounted on a central shaft, a reduction gear unit, and a motor drive system. Materials enter from the lower end of the tank and are pushed forward by the agitation of the spiral blades, ensuring thorough contact with water to separate impurities. Known for its compact structure and stable operation, it is ideal for medium-to-large-scale aggregate processing scenarios.

2.Application

The single screw sand washer is widely used in industrial sectors requiring deep cleaning and classification of aggregates, including:

• Construction & Infrastructure: Cleaning concrete aggregates for highways, railways, bridges, and municipal projects.

• Aggregate Production: Washing, desliming, and dewatering manufactured sand (M-sand) and natural sand.

• Hydropower Engineering: Pre-treatment of sand and gravel for concrete precast yards at dams and levees.

• Mining & Mineral Processing: Cleaning ores such as iron, manganese, and gold to remove clay and fine silt.

3.Working Principle

• Material Feeding & Submergence: Raw sand and gravel enter from the front of the water tank and are submerged in water.
• Spiral Agitation & Lifting: The motor drives the central shaft via a reducer, causing the spiral blades to rotate at a steady speed. This continuously stirs, scrubs, and slowly lifts the material along the incline.
• Classification & Separation: Leveraging the difference in specific gravity (sand particles settle quickly due to high density, while clay and dust settle slowly), impurities are carried by the water flow and discharged through the overflow weir at the rear. Clean sand is pushed toward the discharge outlet.
• Dewatering & Output: The washed material is dewatered at the discharge end before being expelled from the machine, achieving an integrated washing, classification, and dewatering process.

4.Advantages

• High Cleaning Efficiency: The continuous agitation of the spiral blades combined with hydraulic action effectively strips clay, dust, and organic impurities from the sand surface, reducing silt content to below 0.5%.

• Reliable Structure & Easy Maintenance: Equipped with a fully enclosed oil-bath transmission system and an optimized seal design, the unit minimizes failure rates and significantly extends its service life.

• Optimal Processing Capacity: The single-screw design strikes a perfect balance between efficiency and power consumption. It is ideal for medium-scale production lines, with a typical capacity of 20–130 tons per hour.

• Water & Energy Saving: By utilizing a water recycling system, the unit maintains low water consumption. With motor power ranging from 3–22kW, it offers highly economical operating costs.

• Strong Adaptability: Capable of processing materials with particle sizes from 0–30mm, it ensures minimal loss of fine sand and is compatible with a wide variety of raw materials.

5.Technical Specifications

6.Our Solutions