Explore our premium grade, high-capacity rotary vibro sieves and industrial inline powder separators designed for modern sanitary processing lines.
Founded on a bedrock of industrial innovation, Henan Jiujie Machine Co., Ltd. has evolved into a globally distinguished designer, manufacturer, and exporter of integrated grain processing systems. We do not merely manufacture stand-alone units; we deliver turnkey engineering architectures that power modern wheat flour milling plants, high-yield feed processing factories, and streamlined rice processing lines.
Our technological capabilities span the entire bulk solids lifecycle—from raw material intake, pneumatic conveying, storage, intensive pre-cleaning, to grading, precision sieving, milling, batch mixing, and automated packaging. Our primary engineering focus remains dedicated to removing contaminants, maintaining strict particle size distribution (PSD), and ensuring food safety compliance through high-performance industrial sifting apparatus.
In the contemporary global food manufacturing sector, processing plants operate under stringent safety guidelines such as the Food Safety Modernization Act (FSMA) in the US and the European Food Safety Authority (EFSA) mandates. Bulk powder processing, particularly wheat, corn, garri, and cocoa, faces massive risks regarding insect infestation, foreign particulate intrusion (plastic, metals, threads), and agglomerations.
Consequently, the demand for industrial flour sifting equipment is soaring. No longer is sifting merely a physical grading step; it has transformed into a critical control point (CCP) in Hazard Analysis Critical Control Point (HACCP) programs. Furthermore, the exponential rise of the global bakery sector, coupled with dynamic demands for alternative starches (e.g., cassava starch, tapioca, garri, and plantain flour), requires adaptable vibratory sieves that can handle different bulk densities, moisture levels, and surface static charges.
B2B buyers, technical directors, and EPC contractors demand three core pillars when acquiring flour sifting machinery: Sanitary Integrity, Operational Reliability, and Process Optimization.
Strict food contact standards require AISI 304 or AISI 316L stainless steel surfaces. Hand-polished, continuous seam-welded joints eliminate bacterial niches where organic dust can accumulate and spoil.
Fine organic flour dust suspended in air is highly explosive. Global processors mandate motors and sifting systems built to meet ATEX Zone 20/21/22 or Class II Div 1/2 hazardous area specifications.
Consistent with international environmental mandates, our cleaning sections avoid wastewater output, preserving raw materials and avoiding municipal filtration costs.
Sifting technology has evolved rapidly from basic eccentric shaking mechanisms to multi-dimensional vibration dynamics. The modern flour sifter utilizes dual-excitation motors or variable-frequency eccentric weights to impart high-frequency 3D motion (vertical, horizontal, and inclined plane) to the screen bed. This configuration ensures that particles bounce vertically to clear blocked mesh holes (self-cleaning) while flowing tangentially toward the discharge ports.
Additionally, high-capacity inline pressure systems (such as the Centrifugal Airflow Sifter) are increasingly preferred in industrial milling operations. These sifters use high-speed paddle shafts to sweep fine particles through a cylindrical screen mesh under positive pneumatic pressure. This prevents dust emission, increases throughput fivefold over gravity sifters, and fits perfectly in pneumatic conveying pipelines.
At Henan Jiujie Machine Co., Ltd., our supply chain resilience stems from our localized vertical integration of the raw-steel-to-finished-machinery lifecycle. We run a fully optimized production setup where manufacturing control, structural integrity, and custom fabrication are entirely managed in-house.
By leveraging automated CAD/CAM manufacturing centers, we ensure that every flange, vibratory ring, and clamp is built to sub-millimeter tolerances. This precision reduces vibration loss through the frame, minimizes structural fatigue, and extends machine service life to twice the industry average. Our state-of-the-art facility integrates advanced processing equipment, including CNC laser cutters, high-precision bending stations, robot-assisted welding cells, and an electrostatic powder-coating line that delivers robust, corrosion-resistant exterior finishes.
Powder behavior varies widely by crop type, regional humidity, and processing temperatures. To ensure continuous operation, we adapt machinery to specific localized agricultural and industrial setups:
Selecting the ideal model configuration requires evaluating particle size, target throughput, and operating environments. Below is our engineering parameter matrix for our flagship industrial sifting systems.
| Machine Model / Type | Standard Mesh Range | Throughput Capacity (Flour) | Motor Configuration | Key Applications |
|---|---|---|---|---|
| ZS Circular Vibro Sifter | 20 - 200 Mesh | 500 - 3,500 kg/h | Single/Dual Vertical Vibro Motor | General grading, flour check-screening, bakery applications |
| Direct Discharge Inline Screen | 10 - 80 Mesh | 2,000 - 15,000 kg/h | Dual Motors (Direct Flow Path) | Bulk silo discharge, bulk tanker unloading check-sieving |
| Centrifugal Airflow Sifter | 40 - 300 Mesh | 1,000 - 8,000 kg/h | Horizontal Rotor Shaft (Drive Motor) | Sticky powder (cocoa, starch), pneumatic inline conveying lines |
| Linear Vibrating Dust Screen | 4 - 100 Mesh | 1,500 - 10,000 kg/h | Dual Counter-Rotator Vibro Motors | De-dusting dry barley, beans, corn grading, garri cleaning |
Get professional, engineering-focused answers to the most common questions regarding bulk powder separation and plant integration.
Mesh blinding is addressed using three complementary techniques: mechanical bounce balls (silicone or polyurethane spheres that strike the underside of the screen), rotary brushes that sweep the screen surface, or ultrasonic transducer systems. For highly sticky powders, we recommend our Centrifugal Airflow Sifter, which uses centrifugal force and airflow to blow the powder through the screen bag, preventing residue accumulation.
A Circular Vibratory Sifter uses multi-plane eccentric vibration to separate powders by gravity, making it highly effective for multi-fraction grading, sizing, and low-to-medium volume safety checks. A Centrifugal Airflow Sifter features a horizontal rotor shaft with blades that force the powder through a cylindrical screen mesh. It is ideal for high-capacity check-sieving of single-particle powders and integrates directly into pressure-tight pneumatic pipelines.
Our flour milling and sifting equipment is certified to ISO9001 and CE standards. For food processing operations, we use AISI 304 or AISI 316L stainless steel for all parts in contact with product. Gaskets, o-rings, and seal materials are FDA-approved food-grade compounds (silicone or EPDM), ensuring no chemical migration or risk of contamination.
Yes. Suspended flour and starch particles are highly flammable. We configure our machines with explosion-proof vibratory motors certified to ATEX or IECEx specifications. Additionally, we use grounding copper strips to discharge static electricity, carbon-loaded anti-static seals, and robust, pressure-shock resistant housings to isolate internal ignition hazards.
Our CNC-driven production lines keep lead times short, typically ranging from 15 to 30 days depending on the size and customization of the order. For logistics, we use secure ocean freight packaging with anti-rust coatings. Additionally, we provide comprehensive pre-sales CAD layout planning, detailed electrical and mechanical installation drawings, and round-the-clock remote commissioning support.
Browse our extensive selection of industrial separators, high-capacity inline screeners, and specialized multi-mesh rotary sifters.
Jiujie Machine