In modern industrial wet milling and bio-refinery processes, the separation of solid fibers and germ from liquid slurry stands as a critical operational bottleneck. The global demand for starch, sweeteners, bio-ethanol, and animal feed (such as DDGS - Distillers Dried Grains with Solubles) has driven processing facilities to scale up capacities while aggressively targeting energy reduction. The Fiber Germ Dewatering Screw Press has emerged as the industry-standard machinery to achieve mechanical dewatering before thermal drying, directly impacting the plant's overall carbon footprint and thermal efficiency.
Across Europe, North America, and rapidly growing processing hubs in Southeast Asia and Latin America, environmental regulations and safety standards are tightening. In the European Economic Area (EEA), and for global companies adhering to international safety protocols, CE Certification is not merely a regulatory checkbox; it is a fundamental assurance of structural integrity, operational safety, and mechanical reliability. CE-certified dewatering screw presses guarantee compliance with the Machinery Directive (2006/42/EC) and Pressure Equipment Directive where applicable, ensuring that high-torque, high-pressure operations do not pose risks to plant operators.
Furthermore, the global supply chain demands equipment that can run continuously (24/7/365) with minimal downtime. In wet corn milling, for example, germ separation must be precise. If the germ contains too much moisture, subsequent oil extraction processes lose efficiency. Similarly, if fiber dewatering is insufficient, the downstream dryers must consume excessive steam, raising operational costs and carbon emissions. Leading global factories are now upgrading to heavy-duty single screw presses that feature advanced metallurgy and optimized compression ratios to handle varying feed consistencies.
Variable pitch screw designs coupled with tapered shafts gradually increase pressure on the material, maximizing water extraction without damaging the fiber structure.
Constructed using high-grade stainless steel (SUS304/SUS316L) and wear-resistant hard-facing alloys on the screw flights to withstand corrosive and abrasive slurries.
Fully compliant with international safety directives, featuring integrated overload protection, safety interlocks, and robust structural housing.
The evolution of dewatering technology is moving rapidly toward intelligent automation and closed-loop process control. Historically, operators manually adjusted the discharge back-pressure cone of a screw press based on visual inspections of the cake moisture. Today, the integration of real-time moisture sensors, torque transmitters, and variable frequency drives (VFDs) allows the screw press to dynamically adapt to upstream process fluctuations.
Jiangsu Zongheng is actively developing and deploying the next generation of smart dewatering systems. Our technical roadmap focuses on three main pillars:
Different regions and industries present unique challenges for solid-liquid separation. A standard, one-size-fits-all approach often fails due to variations in crop characteristics, local environmental regulations, and utility costs. Below are the primary macro solutions engineered by Jiangsu Zongheng:
In corn starch production, the corn kernel is separated into germ, fiber, gluten, and starch. The fiber fraction, after washing in a multi-stage cyclone system, carries a high volume of water. Our single screw press is designed to receive this slurry, compress it, and deliver a cake with optimal moisture content for feed production. By integrating our YDX Starch Washing Cyclone and Degerming Mill with the dewatering press, factories achieve a highly synchronized process flow that maximizes starch yield and minimizes protein loss.
In bio-ethanol plants, the spent grains (stillage) must be dewatered to produce DDGS. The combination of our MVR Evaporation Plant (to concentrate thin stillage into syrup) and our Single Screw Press (to dewater wet cake) represents the pinnacle of thermal-mechanical synergy. The concentrated syrup is blended with the dewatered cake before entering the Tube Bundle Dryer, ensuring a stable, high-nutrient feed product with minimal energy input.
In regions like North America and Brazil, processing plants operate at massive scales, requiring screw presses with high volumetric throughput and heavy-duty gearboxes capable of handling high torque. Conversely, in water-scarce regions of Northern China and parts of India, our systems are optimized for water recycling, utilizing closed-loop screen wash systems that minimize fresh water consumption while maintaining high dewatering efficiency.
Jiangsu Zongheng Concentrating and Drying Equipment Co., Ltd (formerly Yixing Yangxi Light Industry Machinery Factory), founded in 1992, is located in Zhoutie Town, Yixing City, on the shores of the beautiful Taihu Lake. The company covers an area of over 54,000 square meters, with a production workshop area of over 22,000 square meters.
As a modern high-tech enterprise, we specialize in the manufacturing of concentration, drying, starch industry, alcohol DDGS, and Category III medium & low-pressure vessel equipment. We are a proud member of the China Starch and Alcohol Association, serving food fermentation, chemical, pharmaceutical, and environmental protection industries globally.
The company covers 54,000+ sqm, employing 3 senior engineers, 20+ engineers, and a total staff of 120 dedicated professionals.
Obtained international quality system certification (Certificate No.: 45021), establishing a complete quality assurance system.
Acquired the prestigious ASME "U" Stamp authorization, marking our entry into high-end global pressure vessel manufacturing.
Obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42).
Established as Yixing Yangxi Light Industrial Machinery Factory, starting with a 15-mu facility and 45 employees.
Zongheng provides energy-efficient, high-performance evaporation solutions including Falling Film, Forced Circulation, and MVR systems designed to concentrate heat-sensitive liquids and industrial wastewater.
Engineered to efficiently dewater solid-containing materials, reducing moisture content significantly before the thermal drying stage.
Including Tube Bundle Dryers and MQG Airflow Dryers utilizing high-speed hot air to suspend, fluidize, and dry materials uniformly.
In integrated industrial plants, dewatering is only the first step. The liquid filtrate separated by the screw press often contains dissolved solids that must be concentrated. This is where our evaporation technology plays a vital role. As detailed in our recent technical updates:
By combining mechanical dewatering (via our single screw press) with thermal concentration (via our MVR and Falling Film Evaporators), Jiangsu Zongheng offers a comprehensive, closed-loop solution for wastewater recovery, corn steep liquor concentration, and alcohol DDGS processing.
Get in touch with our engineering team today for a customized technical proposal and quotation tailored to your plant's specific requirements.
Zongheng
