In modern starch, chemical, wastewater treatment, and alcohol production lines, bulk material handling forms the vital nervous system. Selecting a CE certified screw conveyor is not merely a legal checkbox for European market access; it represents the implementation of high-level safety factors, sound structural mechanics, and dust-tight design paradigms.
CE certification ensures compliance with critical safety requirements under the Machinery Directive 2006/42/EC and, where applicable, the ATEX Directive 2014/34/EU for explosive environments (such as dry starch powders or flammable biomasses). Achieving this certification implies the use of calculation-proven wall thicknesses, robust shaft sealing architectures, explosion relief doors, and reliable overload safety interfaces.
Jiangsu Zongheng combines 30+ years of high-end machinery fabrication experience to develop robust screw conveyor plants, ensuring zero material loss, dust control, and continuous operating metrics under heavy industrial duties.
We supply custom-welded helical flights in standard pitch, short pitch, and tapered configurations. For abrasive materials (e.g., starch fibers or spent grains), we utilize surface cladding with hard-facing alloys (Tungsten Carbide, Hardox) to prolong service lifespan.
Utilizing high-integrity split gland seals, air-purged stuffing boxes, and mechanical shaft seals to avoid material leakage and contamination. Crucial for sanitary food applications and chemical processing where zero leakage is permitted.
Configured with direct-coupled gearmotors (Nord, SEW, or Guomao) designed with a service factor >1.5 to withstand high torque, instant reversing stress, and variable speeds matching varying feed rates of tube bundle dryers or dewatering press units.
Manufactured from high-grade Stainless Steel (AISI 304, AISI 316L, or Duplex) to ensure corrosion resistance when handling wet solids or heat-sensitive chemically active organic materials coming from falling film evaporators.
In process engineering, screw conveyors are not isolated systems; they link dewatering machinery like the Single Screw Press to subsequent drying systems like the ZXG Tube Bundle Dryer or the MQG Airflow Dryer.
For instance, after slurry is concentrated in a Falling Film Evaporation Plant, the solids are fed into a Single Screw Press. The resulting cake—often sticky, cohesive, and dense—is discharged directly into our heavy-duty screw conveyors. Here, the conveyor acts not only as a transporter but also as a feed-conditioner: utilizing ribbon flights to break up cake clumps, ensuring uniform volumetric distribution before it enters the drying chambers. This seamless transition is critical to prevent thermal spikes and clogging inside the high-speed tubes.
Our screw conveyor designs feature integrated wash ports (CIP - Clean-In-Place) and quick-opening covers to facilitate hygiene management in food, feed, and chemical applications, keeping production lines operational with minimal downtime.
Strict Environmental & Safety Standards: Handling municipal sludge dewatering and organic food waste. Systems are certified with CE Marks, featuring ATEX-compliant electrics for dust-hazard zones, food-contact declarations (Regulation EC 1935/2004), and low-noise operational ratings (<75 dB).
Industrial Starch & Corn Wet Milling: Integration with large-scale Degerming Mills. Materials are handled under severe continuous loading (24/7/365). Drives are engineered to meet NEMA premium efficiency standards and local code requirements, including ASME stamps for pressurized parts.
Bio-ethanol & DDGS Projects: Handling highly acidic, abrasive materials in cassava starch and sugar refinery plants. We supply Duplex stainless steel flights and robust sealing modules that resist chemical wear and high ambient humidity, avoiding corrosion and premature failure.
Located in Yixing City, Jiangsu Province—the heartland of China's light industrial machinery cluster—Jiangsu Zongheng operates out of a modern 54,000+ square meter facility. This geographic hub provides immediate proximity to high-grade raw steel mills, specialized laser cutting centers, heat-treatment facilities, and specialized port infrastructure.
Our in-house fabrication, featuring over 20+ specialized design engineers and 3 senior manufacturing veterans, enables full structural fabrication, machining, surface finishing, and load testing under one roof. By reducing dependence on sub-contractors, we guarantee precise quality control (ASME U-stamp, CE, ISO9001 compliance) while cutting delivery lead times by 20% to 35% compared to Western manufacturers.
With a state-of-the-art testing bay, every screw conveyor, evaporator component, and tube bundle system is dry-run tested, balancing shafts dynamically to guarantee zero vibration and high assembly tolerances before dispatch.
The company covers a total area of over 54,000 square meters, with production workshop space exceeding 22,000 square meters. It currently employs 3 senior engineers and over 20 engineers and assistant engineers, with a total staff of 120 people.
Obtained international quality system certification (Certificate No.: 45021), establishing a complete quality assurance system aligned with international standards.
Acquired the ASME "U" Stamp authorization, marking the company's entry into a new phase of international manufacturing development.
The company obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42) for pressurized vessels.
We became officially recognized as a Jiangsu Provincial High-Tech Enterprise, expanding R&D allocations.
The company took the lead in obtaining ISO9001, structuring quality management routines.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd, formerly known as Yixing Yangxi Light Industrial Machinery Factory, was established in 1992, covering approximately 15 mu with 45 initial employees.
Integrating vibrations, bearings, and shell temperature sensors directly into conveyor frames. This feeds real-time telemetry into central plant PLCs, predicting wear-fatigue on screws before a shutdown occurs.
Testing fluoropolymer and ultra-high-molecular-weight (UHMW) linings for sticky starch cake handling. This limits friction coefficients, reduces electric power draw, and facilitates automated water-rinsing cleanout cycles.
Collaborating with global drive manufacturers to integrate synchronous reluctance motors (IE5 class). This reduces electrical footprints, helping processing plants hit strict carbon reduction goals under EU regulations.
We warmly welcome friends from various industries, both domestic and international, to visit us for cooperation and mutual development!
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