High-Efficiency Sand Washing Machine For Foundries QR-SXL Automatic
Continuous Mud Content Analyzer
Product Overview
The QR-SXL Automatic Continuous Mud Content Analyzer is a high-efficiency instrument designed to determine the mud content in raw and reclaimed sand used in foundries. By automating sand washing, drying, weighing,
and mud content calculation, it significantly reduces testing time
while improving accuracy and consistency.
Unlike traditional siphon washing methods, which can take 3–4
hours, the continuous flushing method employed by the QR-SXL completes the process in 1–2 hours, making it highly suitable for modern foundries and laboratories.
Monitoring mud content is critical:
Wet molding sand with too high mud content (>16%) reduces permeability,
increases brittleness, causes casting defects, and complicates mold
removal.
Low mud content increases permeability and may reduce surface quality.
Resin sand requires especially low mud content (<0.2%) to maintain bond
strength, minimize binder consumption, and reduce gas generation
during casting.
Working Principle
The QR-SXL operates according to GB2684-2009-T standards, separating sand and mud based on particle size:
The continuous flushing principle:
Tap water enters the bottom of the sand washing bottle through a
pressure-reducing valve.
Controlled water flow lifts the sand, allowing mud particles
(<0.020 mm) to remain suspended and be discharged continuously.
Sand particles (>0.020 mm) settle and are retained, while the
water above becomes clear, signaling completion of mud removal.
This method provides stable numerical results, short testing time, and reduced labor.
Main Technical Parameters
| Parameter | Specification |
|---|
| Minimum inlet water pressure | 0.2 MPa |
| Outlet pressure of pressure-reducing valve | 0.2–0.25 MPa |
| Water level rise speed in sand washing bottle | 15–30 mm/min (adjustable) |
| Tap water flow meter | 0.16–1.6 L/min ± 2.5% |
| Water pressure gauge | 0–0.6 MPa ± 1.5% |
| Timer accuracy | 60 min ± 5 s |
| Power supply | AC 220V / 50 Hz / 20W |
Main Applications
The QR-SXL is widely used in:
Foundry and casting industry – for mud content analysis in raw and reclaimed sand.
Scientific research & universities – for experimental studies on sand properties.
Quality inspection laboratories – ensuring consistent sand performance for high-quality casting.
Resin and bonded sand production – maintaining low mud content for optimal binder performance.
✅ Why Choose QR-SXL?
Continuous automatic flushing for fast, efficient, and accurate mud content measurement.
Short testing time compared to traditional siphon methods.
Stable and reliable numerical results for consistent quality
control.
Simple operation and low labor intensity, ideal for modern
laboratory and
