Top Cloud-agri QKT-320A Small-Plot Threshing Machine

Overview

The Top Cloud-agri QKT-320A Small-Plot Threshing Machine is an engineered solution for controlled, high-fidelity grain separation in agricultural breeding trials and small-plot field research. Designed specifically for use in varietal evaluation plots—where genetic purity, sample traceability, and minimal cross-contamination are critical—the QKT-320A employs a semi-feed mechanical threshing principle based on adjustable drum-cylinder interaction and calibrated airflow-assisted cleaning. Unlike bulk-scale threshers, this instrument prioritizes sample integrity over throughput: each plot sample is processed independently with configurable rotational speed, outlet gap, and blower pressure to match the morphological and mechanical properties of diverse cereal species—including wheat (Triticum aestivum), rice (Oryza sativa), foxtail millet (Setaria italica), and sorghum (Sorghum bicolor). Its architecture supports GLP-aligned experimental protocols by enabling consistent, repeatable, and documentable processing conditions across hundreds of discrete plot samples per season.

Key Features

• Plot-Specific Threshing Integrity: Semi-feed mechanism ensures single-plot batch processing without carryover; feed chute and drum chamber are fully accessible for rapid cleaning between varieties.
• Multi-Crop Adaptive Configuration: Independent speed control (400–730 rpm) and variable outlet gap adjustment (3–15 mm) allow optimization for grain size, rachis strength, and hull adhesion across cereals.
• Integrated Air-Assisted Cleaning: Dedicated 0.6 kW blower delivers stable air pressure (500–700 mm H₂O) to separate chaff, glumes, and broken kernels while preserving whole-grain yield integrity.
• Low-Energy Operational Profile: 1.5 kW main motor (Y100L-6, 940 rpm) provides sufficient torque for low-moisture and high-moisture grains without overheating or excessive kernel damage.
• Ergonomic & Safety-Engineered Design: Enclosed drive train, emergency stop switch, non-slip platform, and intuitive manual controls reduce operator fatigue and support ISO 4254-1 compliance for agricultural machinery safety.

Sample Compatibility & Compliance

The QKT-320A accommodates plot sizes ranging from 1 m² to 10 m², with typical throughput of 15–25 kg/h per variety depending on moisture content (12–22% w.b.) and panicle density. It meets national standards for agricultural testing equipment in China (NY/T 785–2004 for small-plot threshers) and is routinely deployed in trials aligned with international breeding frameworks including CIMMYT, IRRI, and ICARDA protocols. While not certified to EU Machinery Directive 2006/42/EC or ANSI/ASAE S358.4, its mechanical design and documentation support integration into ISO/IEC 17025-accredited seed testing laboratories where instrument qualification (IQ/OQ/PQ) is performed internally.

Software & Data Management

The QKT-320A operates as a standalone electromechanical system with no embedded digital controller or data logging capability. However, its operational parameters—rotational speed, outlet gap setting, blower voltage, and processing timestamp—are intended to be manually recorded in laboratory notebooks or electronic trial management systems (e.g., FieldBook, BreedBase, or custom LIMS). For traceability, users are advised to assign unique plot IDs, record pre-threshing moisture content (measured via calibrated moisture meter), and log post-threshing weight and visual quality assessment (e.g., % broken kernels, % unfilled spikelets) per FAO/WHO grain quality guidelines.

Applications

• Primary seed multiplication and purity verification in early-generation breeding nurseries (e.g., F₂–F₅ plots).
• Grain yield component analysis—including thousand-kernel weight (TKW), harvest index, and shattering resistance scoring—under controlled plot conditions.
• Pre-harvest sprouting tolerance screening via timed threshing of wet-harvested spikes.
• Supporting QTL mapping studies where precise phenotypic data from genetically homogeneous plots must remain uncontaminated by neighboring varieties.
• Calibration reference for automated grain analyzers (e.g., MARVIN, SKYSCAN µCT) requiring clean, unbroken, and contaminant-free input samples.

FAQ

Is the QKT-320A suitable for certified seed production trials?
Yes—its low cross-contamination rate and mechanical isolation between batches meet national requirements for breeder seed processing under GB/T 3543.1–1995.
Can the machine handle green or high-moisture rice panicles?
It is rated for grains up to 22% moisture content; for >22% MC, pre-drying to ≤18% is recommended to prevent clogging and maintain separation efficiency.
Does Top Cloud-agri provide validation documentation for GxP environments?
No pre-validated IQ/OQ packages are supplied, but technical specifications, dimensional drawings, and electrical schematics are available upon request to support user-led qualification.
What maintenance intervals are recommended for field-deployed units?
Lubrication of drum bearings every 200 operating hours; blower filter cleaning after each trial day; annual inspection of belt tension and drum wear profile.
Is CE or UL certification available?
Not applicable—the device is classified as agricultural research equipment, not consumer or industrial machinery subject to CE/UL marking; however, voltage variants (220 V / 380 V) comply with IEC 60034 motor standards.