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Bean Cleaning Line
TQSF/TQSFB Series De-stoner
keyword：
seed cleaner
Product Details
The TQSF/TQSFB Series De-stoner is a high-performance gravity separator designed for the efficient removal of stones, glass, metal fragments, and other high-density impurities from grain and other granular materials. Positioned in the cleaning section of processing lines, this machine serves a critical role in protecting downstream equipment—such as mills, pulverizers, and packaging machinery—from damage caused by hard contaminants, while simultaneously enhancing final product purity. The de-stoner operates on a combined vibration and airflow principle: material flows across a vibrating screen deck while controlled upward air movement fluidizes the grain bed; higher-density contaminants (stones, glass) settle downward against the airflow, while lighter, clean grain floats upward and discharges separately.
This mechanism achieves exceptional separation efficiency, including the removal of small, lighter stones roughly the size of a grain kernel. The TQSF series is available in 11 models with capacities ranging from 1 to 22 tons per hour for common wheat, accommodating operations of all scales. A key differentiator is the air-recycling option—customers can choose a self-contained unit with internal air recirculation or a configuration designed for connection to centralized aspiration systems, offering flexibility based on facility infrastructure and operational preferences.
Key Features
High-Efficiency Removal of Stones, Glass, and High-Density Contaminants
The TQSF de-stoner delivers exceptional separation performance, effectively removing a wide range of high-density contaminants that compromise product quality and equipment integrity. The machine is engineered to eliminate stones, glass fragments, metal pieces, and other dense impurities from the grain stream with remarkable precision. Notably, the de-stoner achieves the removal of small, lighter stones roughly the size of a grain kernel—a category of contaminant that can be particularly difficult to separate and that poses significant risk to downstream milling equipment.
This high efficiency is achieved through the synergistic combination of vibration and airflow: the vibrating screen creates a stratified material bed where denser particles migrate downward, while the upward air stream lifts lighter, clean grain away from contaminants. The result is a clean product stream that meets rigorous purity standards for flour milling, rice processing, and other grain applications.
Dual Principle Operation: Gravity Separation with Airflow Classification
The TQSF series employs a scientifically engineered dual-separation principle that combines gravity-based stratification with pneumatic classification. As material enters the machine, it spreads across the full width of the vibrating screen deck. The vibration action, generated by dual vibration motors, creates a controlled forward motion while simultaneously promoting particle stratification based on density. Heavier particles (stones, glass) settle to the screen surface while lighter particles (clean grain) remain suspended in the upper layers of the material bed.
Simultaneously, upward airflow passes through the screen from below, fluidizing the grain bed and further enhancing density-based separation. The result is a continuous process where stones and other high-density materials are directed to one discharge outlet while clean grain flows to another. This combination of mechanical vibration and pneumatic separation provides more effective contaminant removal than either principle alone, achieving the high separation efficiency required for premium grain products.
Air-Recycling Option for Flexible Installation
The TQSF series offers a significant operational flexibility feature: the choice between air-recycling and non-recycling configurations. Models designated with the "B" suffix (TQSFB) incorporate an integrated air-recycling system that recirculates air internally, allowing the machine to operate as a self-contained, stand-alone unit without connection to facility aspiration systems. This configuration is ideal for facilities without centralized dust collection or for installations where connection to existing systems would be cost-prohibitive.
Standard TQSF models, by contrast, are designed for connection to a centralized aspiration system, which can be advantageous in facilities already equipped with comprehensive dust collection infrastructure. Both configurations deliver the same high separation efficiency; the choice allows customers to select the most cost-effective and operationally convenient solution for their specific facility layout and existing equipment infrastructure.
Comprehensive Protection for Downstream Equipment
The de-stoner serves as a critical protective barrier in grain processing lines. Stones, glass fragments, and metal pieces that pass through initial cleaning stages pose serious risks to downstream equipment: roller mills, hammer mills, and pulverizers can suffer catastrophic damage when impacted by hard contaminants, resulting in costly repairs, production downtime, and potential safety hazards. By removing these high-density impurities upstream, the TQSF series extends the service life of downstream machinery, reduces maintenance frequency, and minimizes the risk of unplanned shutdowns.
The machine's effectiveness in removing even small, kernel-sized stones provides particular value in flour milling applications, where such contaminants can cause progressive damage to roll surfaces over time. For facilities processing grains for human consumption, this protective function is complemented by the food safety benefit of removing potentially hazardous contaminants from the final product.
Wide Capacity Range Across 11 Models for Scalable Solutions
The TQSF series is available in 11 distinct models (TQSF43 through TQSF250), offering capacities ranging from 1 to 22 tons per hour for common wheat. This broad selection enables processors to select the optimal machine for their specific throughput requirements, avoiding the inefficiencies of oversized equipment or the constraints of undersized capacity. The TQSFB models (B125, B150) provide additional capacity options for operations requiring the air-recycling configuration. All models maintain the same high separation efficiency across the capacity range, with performance validated through extensive field operation.
For facilities planning future expansion, the modular design of the series allows for straightforward integration of additional units as production scales. The comprehensive model range ensures that operations of all sizes—from small-scale specialty mills to large industrial processing plants—can implement effective stone removal without compromising on performance.
Adjustable Vibration and Airflow Parameters
Different grain types, moisture contents, and contamination levels require different operating parameters to achieve optimal separation results. The TQSF series provides operators with adjustable vibration and airflow controls that allow fine-tuning of machine performance to match specific processing conditions. The dual vibration motors incorporate eccentric weights that can be repositioned to adjust vibration amplitude, enabling operators to calibrate the intensity of particle stratification.
Airflow volume can be modulated to suit material characteristics: higher air volume for lighter grains that require greater lift, lower air volume for denser materials. These adjustments are accessible from outside the machine housing, allowing operators to optimize performance without interrupting production. The ability to fine-tune these parameters ensures that the de-stoner can accommodate variations in incoming grain quality and seasonal crop characteristics while maintaining consistent separation efficiency.
Versatile Application Across Multiple Crops and Industries
While optimized for wheat processing, the TQSF series de-stoner is engineered to handle a diverse range of crops and materials. Primary applications include: wheat processing for flour mills and semolina plants; rice processing for removing stones before husking and whitening; corn processing for dry milling and nixtamalization; bean and pulse processing for human consumption and feed applications; sesame seed cleaning for oil extraction; and coffee bean processing for removing stones that could damage roasting equipment.
The machine also performs effectively for barley, oats, sorghum, and other specialty grains. This application versatility makes the TQSF series a standard solution across the grain processing industry, allowing facilities processing multiple crops to standardize on a single de-stoner platform while maintaining optimal separation results for each material.
Durable Construction with Anti-Corrosion Protection
The TQSF series is built to withstand the demanding conditions of continuous grain processing. Standard construction features carbon steel components with a durable anti-corrosion powder coating, providing excellent resistance to rust and abrasion in typical indoor applications. The screen deck is engineered for durability, maintaining structural integrity under continuous vibration loads. All bearings are sealed against dust ingress, reducing maintenance requirements and ensuring reliable operation.
The vibration motors are selected for continuous-duty performance, with overload protection and robust mounting systems that maintain alignment over years of operation. For facilities with specific requirements—such as food-grade applications or corrosive environments—stainless steel construction options are available. This emphasis on durable, maintainable construction ensures that the TQSF de-stoner delivers reliable performance and low total cost of ownership over the equipment's service life.
Technical Specifications
| Model | Sieve（cm） | Capacity（t/h） | Air Pressure（pa） | Air Volume（m3/h） | Power（kg） | Weight（kg） | Dimension（mm） |
| TQSF43 | 43 | 1-1.5 | ﹤980 | 3000 | 2×0.25 | 215 | 1270×700×1600 |
| TQSF50 | 50 | 2-4 | ﹤980 | 4000 | 2×0.25 | 230 | 1420×780×1800 |
| TQSF60 | 60 | 3-5 | ﹤980 | 4500 | 2×0.25 | 280 | 1450×876×1800 |
| TQSF80 | 80 | 5-7 | ﹤980 | 6000 | 2×0.25 | 340 | 1450×1046×1800 |
| TQSF100 | 100 | 7-9 | ﹤980 | 8000 | 2×0.25 | 400 | 1500×1246×1900 |
| TQSF125 | 125 | 9-11 | ﹤980 | 10200 | 2×0.25 | 500 | 1470×1496×1900 |
| TQSFB125 | 125 | 15-18 | ﹤980 | 12000 | 2×0.55 | 650 | 1649×1714×2083 |
| TQSF150 | 150 | 11-14 | ﹤980 | 12000 | 2×0.25 | 600 | 1580×1746×1900 |
| TQSFB150 | 150 | 18-20 | ﹤980 | 15000 | 2×0.55 | 760 | 1649×1964×2083 |
| TQSF175 | 175 | 14-18 | ﹤980 | 15000 | 2×0.25 | 750 | 1470×1990×1900 |
| TQSF200 | 200 | 16-20 | ﹤980 | 17000 | 2×0.25 | 1000 | 1470×2292×1900 |
| TQSF250 | 250 | 20-22 | ﹤980 | 20400 | 2×0.25 | 1050 | 1470×2835×1900 |
Note: Capacities based on common wheat with standard contamination levels. TQSFB models feature integrated air-recycling system.
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