Explore our state-of-the-art bulk material handling components, grain milling systems, and high-precision laboratory apparatus.
Bulk solids handling forms the foundational spine of modern agricultural processing, infrastructural construction, and chemical manufacturing. At the heart of these logistical networks sits the screw conveyor (also known as an auger conveyor), a mechanical conveying system designed to transfer granular or fluid materials through rotating helical screw flights. As a leading manufacturer and exporter in China, Henan Jiujie Machine Co., Ltd. spearheads the development of advanced bulk material handling solutions tailored for global markets.
Information Gain: Understanding bulk transport dynamics requires analyzing the friction coefficients between the material being conveyed and the trough walls. Our customized flights are tailored based on the dynamic pitch requirements of the specific material (e.g., wheat flour vs. heavy cement) to optimize power consumption and prevent material fallback.
Depending on the mechanical demands of the target application, screw conveyors are split into two major engineering designs:
Partnering with a leading China-based manufacturer like Henan Jiujie Machine Co., Ltd. provides global procurement officers with unmatched economic and technological benefits. The industrial ecosystem of Henan Province integrates complete upstream and downstream resources, from high-grade structural steel mills to advanced domestic motor and gearbox manufacturers.
Our raw material procurement benefits from massive economies of scale, allowing us to source certified SUS304 and SUS316L stainless steel, as well as wear-resistant carbon steels, at highly competitive rates. Combined with our advanced computerized design processes, this allows us to deliver high-quality machinery without the excessive markup typically associated with European and North American manufacturing lines.
Leveraging state-of-the-art machinery and standardized engineering protocols to deliver robust processing systems.
For multinational corporations purchasing industrial machinery, compliance is a critical priority. Importing screw conveying systems requires adherence to localized safety, environmental, and operating standards.
Industrial processing environments dealing with combustible dusts—such as flour mills, starch lines, and organic powders—require strict compliance with explosion safety guidelines. Henan Jiujie designs its pneumatic and mechanical conveying machinery, including our Rotary Airlock Valves and Screw Conveying Systems, to meet stringent European ATEX directives. This ensures that electrical components, gearboxes, and structural seals prevent dangerous ignition in high-dust operating environments.
Food processing systems, particularly those transporting wheat flour, starch, or baby formula ingredients, must meet strict sanitary designs. Our stainless steel screw conveyors feature continuous weld finishes, polished contact surfaces (up to Ra < 0.4 μm), and food-grade gasket materials (FDA compliant). This eliminates crevices where bacteria could accumulate, simplifying clean-in-place (CIP) and sanitation procedures.
Unlike traditional grain processing lines that rely on extensive water washing to remove soil and organic dust, Henan Jiujie has developed specialized dry-cleaning gravity separators and dry aspiration systems. By designing conveying and cleaning setups that operate without water usage, we help processing plants avoid costly wastewater treatment systems while reducing environmental impact.
Our workshop is outfitted with modern CNC machinery, advanced welding systems, and custom coating lines to guarantee structural durability and processing consistency.
As manufacturing lines transition toward Industry 4.0, several key technological shifts are transforming screw conveyor design:
Modern bulk handling installations incorporate real-time sensor monitoring. Vibration, temperature, and torque sensors placed near bearings and gearboxes help operators identify mechanical strain before component failure occurs, reducing unscheduled plant downtime.
Optimizing mechanical efficiency is crucial for processing lines operating 24/7. By matching variable-frequency drives (VFD) with precision helical gearboxes, modern screw conveyors minimize starting torque spikes and optimize electricity usage under varying load conditions.
Generic flight designs are increasingly replaced by custom profiles. Tapered-diameter screws, variable pitch flights, and custom ribbon designs are matched to the flow characteristics of cohesive powders to prevent bridging and ensure consistent output.
The versatility of our conveying systems allows them to handle various materials across multiple industries:
Answers to common technical and logistical questions from global buyers and processing plant engineers.
To prevent excessive wear on flights and troughs, abrasive materials must be conveyed at lower trough loading ratios (typically 15% to 30%) and reduced rotational speeds (often below 50 RPM). We calculate the exact screw diameter and pitch based on the bulk density (e.g., 1.5 t/m³ for cement) and targeted throughput, selecting wear-resistant carbon steel or applying hard-facing materials to flight edges to extend component lifespans.
For sanitary and food-grade applications, we construct our conveyors using SUS304 or SUS316L stainless steel. The internal screw flight welds are continuously ground smooth and polished to eliminate crevices that could host bacteria. We use food-grade silicone or PTFE shaft seals and design quick-opening clamp covers to simplify cleaning and inspection.
We provide full documentation, including detailed 3D AutoCAD drawings, mechanical layouts, and wiring schematics. Our technical support team coordinates online video inspection sessions during site installation. For large-scale projects, we can deploy experienced installation engineers to assist with system calibration, commissioning, and staff training.
Engineering design review takes 3 to 7 days, and fabrication typically ranges from 20 to 35 days, depending on order size and complexity. Because we manage all CNC cutting, bending, and powder coating processes in-house, we maintain complete control over scheduling and delivery timelines.
Industrial-grade processing machinery, milling plants, and bulk handling products for international exporters.
Jiujie Machine
