Screw Stone Washer
High-Efficiency Solution for Sand & Stone Washing, Desliming and Classification
Product Overview (What it is)
The Screw Stone Washer (also known as Screw Sand Washer or Auger Stone Washer) is a piece of equipment that combines hydraulic flushing with screw conveying to clean, deslime, classify and initially dewater sand and stone materials. With mature structure and stable operation, it is widely used in sand and gravel aggregate production lines, construction sand processing and ore washing processes, serving as a key equipment to improve the cleanliness of sand and stone.
Working Principle (How it works)
The screw stone washer completes the washing operation through the synergy of screw blade rotation conveying and water flow flushing:
- Materials enter the washing tank from the top and mix with water to form slurry.
- The motor drives the screw shaft to rotate, and the screw blades push the sand and stone forward along the tank body.
- During the conveying process, the water flow continuously scours the surface of the sand and stone.
- Light impurities such as stone powder and soil are suspended in water and discharged through the overflow port.
- The cleaned sand and stone are conveyed to the discharge end by the screw, realizing the integration of washing, classification and dewatering.
This principle is based on the difference in particle specific gravity and sedimentation speed, featuring high washing efficiency and stable finished products.
Key Components
- Screw Blades: Made of wear-resistant materials to ensure no deformation during long-term high-load operation.
- Central Shaft & Bearing Housing: Ensures stable transmission and reduces vibration and wear.
- Tank Body: Supports single-screw / double-screw structural forms.
- Driving Device: Combination of motor and reducer for stable power output.
- Discharge Port & Overflow Port: Adjustable according to material conditions.
- Frame & Base: Provides overall rigid support for more reliable operation.
Materials & Applications
Applicable Materials
- Quartz sand, river sand, river pebbles, cobblestones
- Granite, basalt, limestone
- Various sand, stone and ore materials within 0–75mm
Application Scenarios
- Sand and gravel yards, manufactured sand production lines
- Construction sites, concrete prefabrication plants
- Hydropower stations, infrastructure projects
- Ore washing and tailings treatment
Performance Advantages (Why choose it)
Excellent Cleaning Effect
High desliming rate and stable cleanliness of finished sand.
Strong Processing Capacity
Meets the continuous operation needs of medium and large sand and gravel production lines.
Durable Structure
The transmission system is isolated from water and sand, resulting in low failure rate.
Simple Maintenance
Intuitive structure with low daily inspection and maintenance costs.
Strong Adaptability
Can form a complete sand washing system with crushing and screening equipment.
Technical Parameters (XLZ Series Screw Stone Washer)
| Model | Screw Diameter (mm) | Max Feed Particle Size (mm) | Processing Capacity (t/h) | Motor Power (kW) |
|---|---|---|---|---|
| XLZ-762 | 762 | <60 | 160–220 | 30 |
| XLZ-914 | 914 | <60 | 200–300 | 30 |
| XLZ-1118 | 1118 | <75 | 500–750 | 45 |
Note: Processing capacity varies with material mud content, particle size and working conditions.
Single-Screw vs Double-Screw Stone Washer (Selection Reference)
| Comparison Dimension | Single-Screw Stone Washer | Double-Screw Stone Washer |
|---|---|---|
| Applicable Scale | Small and medium-sized production lines | Medium and large-sized production lines |
| Processing Capacity | Low | High |
| Cleanliness | General | High |
| Floor Area | Small | Large |
| Operating Cost | Low | Relatively High |
| Mud Content Adaptability | Medium | Strong |
| Continuous Operation Capacity | General | Strong |
Selection Suggestion:
Choose single-screw for low mud content and limited site space.
Choose double-screw for high mud content and large output requirements.
Frequently Asked Questions (FAQ)
Q1: What is the maximum particle size of materials that the screw stone washer can handle?
Regular models can handle materials within 0–60mm or 0–75mm, depending on the model configuration.
Q2: How to choose between single-screw and double-screw?
The selection mainly depends on output, mud content and site conditions. Double-screw is recommended for high mud content and large output.
Q3: Is the water consumption of the equipment high?
Compared with bucket wheel sand washers, the water consumption of the screw stone washer is controllable, suitable for continuous and stable operation.
Q4: Can it be used together with crushing and screening equipment?
Yes, it is often used in integrated crushing-screening-washing production lines.
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