Designed by Jiangsu Zongheng for efficient material drying solutions, optimizing particulate suspension and moisture extraction.
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High-efficiency low-oxygen indirect steam drying, preventing oxidation of heat-sensitive materials during large-scale processing.
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CE Certification High-Performance plants designed for highly viscous effluents, avoiding thermal fouling and scaling.
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Engineered for high-precision starch refining, separation, and complete impurity removal in multi-stage process streams.
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Jiangsu Zongheng high-performance design for efficient maize processing, maximizing starch recovery and product purity.
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Advanced system configurations designed to reduce thermal utility demand in food, bio-chemical, and wastewater operations.
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Reliable indirect heating elements configured for continuous operations with minimal nitrogen purging requirements.
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Mechanical Vapor Recompression plant utilizing recycled process vapor, cutting carbon footprints and cooling-water overheads.
View DetailsIn contemporary wastewater management and biological sludge separation, the Volute Screw Press has emerged as the global benchmark for mechanical dewatering. Traditional systems, such as belt presses and high-speed decanter centrifuges, struggle with high electrical consumption, frequent mechanical wear, and substantial maintenance downtime. The volute screw press bypasses these limitations by employing an ingenious system of alternating moving and fixed rings to clean the filter mesh dynamically while applying progressive axial pressure.
Globally, stringent ecological mandates require municipal wastewater utilities and heavy processing plants to minimize landfill volume and capture dry cake with high solids content. With Europe's circular bio-economy directives and North America's strict EPA guidelines, procurement managers look for CE-certified dewatering units that can handle greasy, oily, and low-concentration sludge streams without clogging. Consequently, the demands on international manufacturing factories have intensified, requiring precise engineering tolerances and long-term mechanical reliability.
The core mechanical sequence of the volute screw press relies on the interaction between a tapered screw shaft, fixed rings, and moving rings. The screw shaft, featuring a varying pitch that decreases from the inlet zone to the discharge plate, rotates slowly (typically between 1 to 5 RPM). As the sludge progresses axially, the inner volume decreases, compressing the flocculated slurry and forcing water to drain radially.
Because the moving rings are continually shifted by the eccentric rotation of the screw, the tiny gaps between the rings are cleared automatically. This self-cleaning action prevents the blinding and clogging common in standard filtration media. This enables continuous processing of oily sludge, such as DAF floatation solids in dairy, refinery, or petrochemical plants, while using less than 5% of the wash water required by belt filters.
The continuous movement of the moving rings prevents clogging, making it ideal for greasy industrial sludge that blinds conventional filter mesh.
Gradually shrinking volumetric spaces between the screw flights compress the sludge cake, yielding high dry-solid percentages with minimal power draw.
Equipped with state-of-the-art PLC automation, adapting torque and dosing rates to incoming sludge fluctuations dynamically.
Established in 1992 as the Yixing Yangxi Light Industry Machinery Factory, Jiangsu Zongheng has evolved over three decades into an engineering heavyweight in concentration, drying, and waste volume reduction systems. Situated in Zhoutie Town, Yixing City, on the banks of Taihu Lake, our state-of-the-art manufacturing complex spans a total area of over 54,000 square meters, containing a dedicated heavy fabrication workshop exceeding 22,000 square meters.
As a registered member of the China Starch and Alcohol Association, Jiangsu Zongheng manufactures premium separation machinery, multi-effect evaporation plants, and high-pressure vessel components. Our engineers design systems to handle high-temperature, highly corrosive, and high-solid industrial feeds. With an in-house engineering squad of over 20 specialists and senior metallurgists, we ensure every volute press and evaporator complies with international safety and performance criteria.
Founded as Yixing Yangxi Light Industrial Machinery Factory, covering 15 mu with a dedicated 45-person production team.
Obtained ISO9001 Quality System accreditation, bringing standardized engineering processes into our fabrication plants.
Secured the Special Equipment Manufacturing License of China (TS2232C42) for medium-pressure vessels.
Authorized with the prestigious ASME "U" Stamp, validating our weld quality and metallurgical craftsmanship globally.
China's manufacturing ecosystem provides distinct structural benefits, particularly for complex capital equipment like the Volute Screw Press. By integrating metallurgy, CNC machining, automated laser cutting, and specialized chemical passivation in a single region, Jiangsu Zongheng produces high-tolerance equipment cost-effectively.
Our manufacturing efficiency is driven by a localized supply chain and specialized in-house production processes:
Furthermore, our engineering team provides customized inlet chambers, flocculation tanks, and dynamic dosing systems tailored to each client's specific layout and feed material. This level of customization ensures seamless integration and high dewatering performance.
Handles grease-heavy wastewater sludge from meat processing, dairy processing, and breweries. The dynamic rings manage oily solids effectively, preventing grease buildup and ensuring continuous operation.
Constructed from high-grade SUS316L stainless steel, our screw presses process corrosive chemical byproducts and biological pharmaceutical sludge with minimal chemical wear.
Processes primary, secondary, and digested municipal sludge. Reduces cake moisture to 75-80%, significantly cutting logistics, transport, and landfill disposal costs.
Modern purchasing managers focus on finding robust equipment that integrates smoothly with downstream drying and recovery systems. Incorporating a volute screw press as a pre-dewatering stage significantly reduces the thermal load on downstream equipment like tube bundle dryers or airflow dryers. By pre-concentrating solids, industrial operations can cut energy consumption in their thermal loops by up to 40%.
Additionally, zero-liquid discharge (ZLD) regulations require companies to optimize water recycling. Clean filtrate captured from our volute presses is easily recycled back into industrial processes, minimizing freshwater intake. For plant designs that combine evaporative concentration with dewatering, pairing our volute press with a mechanical vapor recompression (MVR) plant provides a highly energy-efficient process loop.
The integration of Internet of Things (IoT) sensors and automated monitoring marks the next phase of dewatering technology. Modern volute press systems employ real-time vibration sensors, automated polymer dosing controls, and variable-frequency drives (VFD) linked to SCADA networks. These systems automatically adjust operating speeds and polymer dosage rates to match incoming sludge solids concentration, preventing torque overloads and minimizing operating costs.
Jiangsu Zongheng is at the forefront of this trend, configuring our CE-marked electrical enclosures to interface with advanced industrial control networks. Our systems feature automated safety interlocks, remote troubleshooting modules, and predictive maintenance alerts for wear parts like the internal rings.
Consult with our engineering team to design custom solutions tailored to your flow rates, solids concentration, and footprint constraints.
Get custom pricing, equipment datasheets, and energy consumption estimates for your project.
Get QuotationDiscuss customization options, metallurgical specs, and system integrations with our team.
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Designed for concentrating heat-sensitive liquids. Forms a thin film flowing down vertical tubes to ensure short residence times.
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Energy-efficient evaporation systems designed to concentrate chemical streams and process industrial wastewater.
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Optimized falling film evaporator configurations for low-temperature operation in corn starch and sweetener processing lines.
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Equipped with CE markings and robust circulating pumps to handle high-fouling process fluids without performance degradation.
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Multi-stage washing hydrocyclone designed for high-purity starch refining and efficient grit removal.
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MVR evaporation plant designed to minimize energy consumption by recompressing and recycling clean process steam.
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Uses high-velocity hot air to fluidize and suspend wet solids, ensuring rapid and uniform moisture removal.
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Reliable indirect steam drying system, operating in low-oxygen conditions to process agricultural residues safely.
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