As a specialized piece of sand-washing equipment, the spiral sand washer plays a pivotal role in enhancing the quality of sand and gravel. This article provides an in-depth analysis of the spiral sand washer’s working principle and washing process, enabling you to gain a comprehensive and thorough understanding of this equipment.
Core Working Principle of the Spiral Sand Washer
The working principle of the spiral sand washer is based on the differences in particle size, density, and settling velocity among sand and gravel particles.
The Spiral Sand Washer’s Washing Process
Step 1: Feeding
The sand and gravel materials to be processed (such as natural river sand, soil-laden sand, manufactured sand, crushed ore, etc.) enter the equipment through the feed inlet located at the bottom of the washing tank. Under the influence of gravity, coarser sand particles—being denser—rapidly settle to the bottom of the tank, while finer sand particles and silt remain suspended in the water due to buoyancy. This achieves the preliminary separation of the materials.
Step 2: Washing
By uniformly injecting clean water into the washing tank, an upward flow is generated. This water flow not only rinses the materials but also further agitates them, encouraging the finer sand particles and impurities to rise toward the water surface. The intensity of the washing process can be controlled by adjusting the water pressure and flow rate.
Step 3: Conveying
Driven by an electric motor, the spiral mechanism rotates slowly, gradually pushing the coarse sand—which has settled at the bottom of the tank—upward until it is conveyed to and discharged through the outlet located at the top. During this process, the spiral blades continuously agitate the sand and gravel materials, ensuring thorough contact between the materials and the water flow, thereby achieving deep cleaning.
Simultaneously, the fine sand and wastewater are discharged through overflow ports located on both sides of the washing tank, thereby achieving the separation of the coarse sand from the fine sand.
Step 4: Discharge
The cleaned sand and gravel are lifted upward by the propulsion of the spiral blades, while excess moisture is expelled through a squeezing action. Ultimately, the high-quality sand and gravel are discharged through the upper outlet.
Sandreck is a professional manufacturer of spiral sand washers. We possess extensive technical expertise and exceptional manufacturing capabilities. We would be delighted to answer any questions you may have.
