Industrial solid-liquid separation represents a core operational anchor for sectors spanning environmental protection, bio-fermentation, starch processing, starch derivative manufacturing, and municipal waste management. As global ecological regulations become increasingly strict, relying solely on thermal drying options without optimizing pre-concentrated cake moisture indexes is cost-prohibitive.
An optimized mechanical screw press acts as the critical bridge, extracting bulk liquid continuous phases before materials enter thermal systems. Our manufacturing expertise shows that optimizing pre-drying mechanical dewatering reduces energy costs. Solid recovery indexes climb while operating footprints drop by over 40% compared to traditional separation screens.
Developing high-capacity screw presses requires a deep understanding of fluid dynamics, material wear profiles, and high compression mechanics. The roadmap below highlights the core features designed to withstand continuous shear forces and corrosive chemicals.
By reducing the screw flight pitch and expanding the main shaft diameter, we create a dynamic compression profile. This design increases pressure along the shaft to prevent material blockages while maximizing water removal.
Using materials like SUS304, SUS316L, and Duplex 2205 stainless steel ensures reliable corrosion resistance. We also apply a flame-sprayed tungsten carbide layer to the flight outer edges to protect against abrasion.
Integrated sensor networks feed back to variable-frequency drives (VFDs) via PLC systems, optimizing feed rates on the fly to match changes in incoming slurry viscosity.
A screw press rarely runs as an isolated machine. For maximum thermal efficiency, it is typically paired with evaporators and dryers. In starch processing and DDGS production, waste streams are split into solids and liquids.
The liquid fraction goes to our MVR Evaporators or Falling Film Evaporation Plants, concentrating low-solids liquids into syrupy concentrates. At the same time, the wet cake from the single screw press is combined with this concentrate before entering our ZXG Tube Bundle Dryer or MQG Airflow Dryer. This systematic approach reduces steam consumption, cuts energy usage, and helps plants hit zero-liquid-discharge (ZLD) benchmarks.
Pairs with MVR and Multi-effect falling film evaporation configurations to capture high-density liquid runoffs, returning clean condensate to the plant.
Takes the dewatered cake and uses indirect steam contact to dry industrial starches and fibers down to stable storage moisture levels.
Utilizes high-speed heated air streams to suspend wet particulates, completing flash dewatering in seconds for light, heat-sensitive powders.
Based in Zhoutie Town, Yixing City—near Taihu Lake—Jiangsu Zongheng operates out of a modern 54,000-square-meter facility with over 22,000 square meters of specialized production workshops. As a member of the China Starch and Alcohol Association, we utilize advanced manufacturing tools, including heavy-duty rolling mills, plasma profile cutters, and robotic welding stations.
Operating in Yixing gives us access to a highly integrated industrial cluster. From raw steel suppliers to specialized heat treatment centers, we manage lead times tightly to deliver cost-effective equipment. In-house design and fabrication mean we maintain full quality control over every structural element and pressurized component.
Authorized since 2012, our shop is certified to design and manufacture Category III medium & low-pressure vessels, adhering strictly to global pressure-vessel safety standards.
Certified since 2002, our quality system governs every step of production—from incoming steel testing to raw material traceability, non-destructive testing (NDT), and hydrostatic pressure tests.
Our electrical layouts and rotating machinery comply with standard safety directives, ensuring easy installation and commissioning across European, North American, and Southeast Asian facilities.
Our facility covers over 54,000 square meters, employing 3 senior engineers, 20+ specialized project engineers, and a total staff of 120 people.
Secured 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 high-end international vessel design and manufacturing.
Obtained the Special Equipment Manufacturing License of the People's Republic of China (License No.: TS2232C42) for pressure vessels.
Recognized as a Jiangsu Provincial High-Tech Enterprise, acknowledging our investments in research and process machinery development.
Led the region by securing ISO9001 certification, standardizing production management protocols.
Established as Yixing Yangxi Light Industrial Machinery Factory, covering 15 mu with 45 employees, laying the foundation for our separating and drying technology expertise.
Optimized for processing corn, cassava, and potato starch. Our single screw press removes water from fibers, while cyclones and degerming mills manage germ separation.
Our separation systems concentrate distillery slops into dry feed (DDGS), reducing energy footprints through combined waste-heat recovery evaporators.
Designed for industrial sludge dewatering. Our single screw presses handle challenging sludges, reducing hauling volumes and municipal dumping fees.
Our engineers will evaluate your material characteristics and sizing requirements to design a custom separation or drying solution.
Get detailed dimensions, footprint layouts, and integration schematics for your plant upgrade project.
Zongheng