Sundy SDNS300t Environmental Vibratory Sieve Shaker & SDNS200t Standard Vibratory Sieve Shaker

Overview

The Sundy SDNS300t Environmental Vibratory Sieve Shaker and SDNS200t Standard Vibratory Sieve Shaker are precision-engineered mechanical sieving instruments designed for reproducible particle size distribution analysis of dry granular materials in routine laboratory environments. These units operate on a proven dual-motion principle—combining horizontal orbital oscillation with vertical tapping—to ensure efficient stratification and separation of particles across standardized sieve stacks. The SDNS series is specifically validated for coal sample preparation per GB/T 474–2008, “Methods for Preparation of Coal Samples,” and is widely deployed in power generation, metallurgy, chemical processing, building materials, and geological survey laboratories where regulatory compliance and inter-laboratory comparability are essential. Unlike rotary or air-jet sievers, the SDNS shakers rely on controlled mechanical excitation without fluidization media, making them ideal for non-cohesive, moderately abrasive powders such as crushed coal, limestone, fly ash, and mineral ores.

Key Features

• Composite motion mechanism: Simultaneous planar shaking (orbital radius 12.5 mm) and vertical impact delivers high-energy particle agitation, enhancing passage through mesh apertures and minimizing blinding.
• Integrated noise-dampening structure: Patented anti-impact isolation system eliminates direct metal-to-metal contact between drive components and frame, reducing operational noise to ≤65 dB(A) at 1 m distance.
• Ergonomic sample loading: Quick-clamp sieve stack retention ensures secure alignment and rapid assembly/disassembly—critical for high-throughput labs handling multiple sample batches daily.
• Robust cast-iron base and reinforced steel housing provide long-term dimensional stability and vibration isolation from benchtop surfaces.
• SDNS300t-exclusive environmental enclosure: Fully sealed acoustic and dust containment罩 with integrated 50-mm diameter dust extraction port (compatible with standard lab vacuum systems), meeting workplace exposure limits per GBZ 2.1–2019 for respirable particulate matter.

Sample Compatibility & Compliance

The SDNS shakers accept standard ISO 3310-1 and ASTM E11 compliant test sieves with nominal diameters of 200 mm and heights of 50 mm. They accommodate up to eight nested sieves per run, supporting cut points from 6.0 mm down to 45 µm (325 mesh). The instruments are certified for use with coal, coke, slag, cement clinker, and other brittle, low-moisture (<2% w/w) particulates. All mechanical performance parameters—including amplitude consistency, frequency stability, and load-bearing uniformity—are verified against national verification procedures outlined in JJG 082–2021 (Verification Regulation for Mechanical Sieve Shakers). The SDNS300t’s enclosed operation further supports adherence to occupational health and safety requirements under China’s Work Safety Law and environmental management standards ISO 14001.

Software & Data Management

While the SDNS series operates via dedicated electromechanical control panels (no embedded microprocessor or touchscreen), it is fully compatible with external laboratory information management systems (LIMS) via RS-232 serial interface (optional adapter). Operators may log sieve run parameters—including duration, layer configuration, and sample ID—using standardized templates aligned with GLP documentation practices. Audit trails for maintenance, calibration, and usage history can be maintained manually or integrated into digital QC records. For regulated environments requiring electronic signatures and data integrity, the shaker’s deterministic mechanical behavior—free from firmware dependencies—ensures full traceability and facilitates 21 CFR Part 11 compliance when paired with validated LIMS platforms.

Applications

• Routine coal sizing for calorific value correlation and washability analysis in thermal power plants.
• Quality control of raw material particle distribution in cement and refractory manufacturing.
• Metallurgical feedstock characterization prior to sintering or pelletizing operations.
• Geological core sample disaggregation and grain-size classification for sedimentological studies.
• Validation of grinding mill output fineness in mineral processing pilot plants.

FAQ

What sieve standards are supported by the SDNS series?

ISO 3310-1, ASTM E11, and GB/T 6003.1–2012 test sieves with 200 mm diameter and 50 mm height.
Can the SDNS300t be used without the dust enclosure?

Yes—the enclosure is removable; however, operation without it voids environmental compliance claims and increases ambient particulate emissions.
Is calibration required before first use?

Initial mechanical verification (amplitude, frequency, and stack alignment) is recommended using a certified vibration meter and optical level; annual verification is advised per JJG 082–2021.
What maintenance intervals are recommended?

Lubrication of eccentric drive bearings every 500 operating hours; inspection of clamp mechanisms and isolation mounts quarterly.
Does the unit support programmable timing?

Yes—both models feature adjustable timer controls ranging from 1 to 99 minutes with automatic shutdown and audible end-of-cycle signal.