[Product Introduction]
The GK fully automatic horizontal scraper-discharge centrifuge is the flagship filtering centrifuge in the horizontal series of Jiangsu Shengli Centrifuge Manufacturing Co., Ltd.-a horizontal, automatic-cycle, scraper-discharge filtering centrifuge. It completes screen washing, feeding, separation, cake washing, dewatering, and discharge in sequence at full speed, with every step available in fully automatic or semi-automatic control. Its innovative design runs smoothly with precise action, simple operation, and easy maintenance, and all product-contact parts are made of stainless steel. The range comprises a Clean Type and a Chemical Type, serving food/pharmaceutical-grade and chemical-grade production respectively-the classic choice for solid-liquid separation of fine-particle suspensions in the chemical, plastics, pesticide, and food industries.
[Working Principle]
After start-up, the bowl runs at full speed: the screen is first washed (back-flush plus power-wash devices restore filtering performance); feed suspension then enters through the feed pipe and distributor and spreads evenly over the screen-liquid passes through the screen and bowl-wall perforations under centrifugal force and exits via the discharge pipe, while solids are retained as an annular cake; one or more washes follow per the program (wash liquor percolates through the cake to displace mother liquor), then spin-drying brings the cake to the target moisture; finally the scraper, hydraulically or pneumatically actuated, cuts into the cake and discharges it through the chute, completing one cycle and automatically starting the next. The entire process is PLC-controlled with individually settable cake thickness, wash volume, and drying time.
[Product Applications]
Suitable for solid-liquid separation of suspensions containing fine solid particles, especially where crystal-edge integrity is not critical. Typical materials include PVC, caustic soda, anthracene, polystyrene, ABS resin, ammonium chloride, ammonium sulfate, sodium chloride, and urea in the chemical and plastics industries; starch, citric acid, salt, MSG, and sorbitol in the food industry; and herbicides, salicylic acid, and stearates in pesticides and fine chemicals. Industry references indicate that horizontal scraper centrifuges suit particles larger than about 10 μm with solids concentrations above roughly 25%, covering more than one hundred materials.
[Industry Application Cases & Market Insights]
The scraper centrifuge is a classic machine with decades of service in the chlor-alkali, salt, and polymer industries. In chlor-alkali alone, China's caustic soda capacity exceeds 40 million tonnes per year-the largest in the world-using horizontal scraper centrifuges extensively for salt sludge separation and product dewatering. The PVC industry is similar: China holds nearly half of global PVC capacity, and resin dewatering after polymerization is a critical post-treatment step with exacting requirements on cake moisture (which directly drives drying energy) and capacity stability. In food processing, starch dewatering calls for different speeds at the feeding, dewatering, scraping, and back-washing stages-variable-frequency machines significantly reduce cake moisture and specific power consumption. With the upgrading of China's chemical industry and new chlor-alkali, fertilizer, and starch projects along the Belt and Road, overseas demand for high-performance, cost-effective scraper centrifuges continues to grow. With its Clean/Chemical dual-series covering both food-pharma and chemical markets, plus advanced features such as regenerative braking and distributed-I/O Ethernet control, the GK series of Jiangsu Shengli Centrifuge Manufacturing Co., Ltd. has entered Southeast Asia, the Middle East, and Central Asia through the company's export network as a cost-effective alternative to European and American brands in new overseas projects.
[Mechanical Structure & Automation]
Reliable mechanical structure: (1) automatic cleaning system with back-washing and power spray for improved distribution and in-line screen regeneration; (2) safe, reliable bowl design for more stable operation; (3) hydraulic door-lock design for quick, easy operation that reduces operator workload and boosts overall equipment efficiency; (4) distributor design for more uniform product distribution and faster, easier screen washing; (5) vibration-isolation system with spring-damper isolators for better isolation and longer service life.
Multiple safety protections and intelligent control: (1) even, intermittent discharge can be coordinated across two machines to balance downstream drying loads; (2) regenerative braking feeds energy back to the grid for significant savings; (3) variable-frequency drive applies different speeds to feeding, dewatering, scraping, and back-washing in starch processes, with fully automatic, semi-automatic, and manual modes; (4) distributed I/O minimizes complex wiring-only one Ethernet cable links machine and control cabinet, cutting wiring and maintenance costs; (5) the fully integrated Ethernet architecture is fast, clean, interference-resistant, and easy to maintain. Optional siphon devices (adding siphon draw to centrifugal force for greater filtering driving force and higher dewatering capacity) and dedicated cleaning installations further extend the machine's operating envelope.
[Key Advantages]
Screen washing, feeding, separation, washing, dewatering, and discharge all at full speed-short cycle time, high throughput.
Fully automatic / semi-automatic / manual operating modes with PLC control for unattended operation.
All product-contact parts in stainless steel; Clean Type meets food and pharmaceutical hygiene requirements.
Back-flush plus power-wash automatic screen washing regenerates the screen online, minimizing downtime.
Hydraulic door lock and spring-damper isolation system for smooth, safe operation.
Regenerative braking and variable-frequency speed control deliver significant energy savings.
Distributed I/O and fully integrated Ethernet: one cable between machine and cabinet-simple wiring, strong anti-interference, low maintenance cost.
Optional siphon device for greater filtering driving force and drier cake.
[Selection & Customization Services]
Jiangsu Shengli Centrifuge Manufacturing Co., Ltd. customizes production to users' material characteristics and working conditions: product-contact parts in SUS304, 316L, 904L, duplex steel, or titanium; screen type and slot width matched to particle size; optional siphon device, back-flush unit, nitrogen-protection system, and explosion-proof configurations (explosion-proof motors, control boxes, and field instruments); and control cabinets with Siemens PLC and HMI supporting remote monitoring and recipe management. When inquiring, customers are asked to provide detailed material parameters (particle-size distribution, concentration, viscosity, mother-liquor properties) and working-condition requirements (throughput, target cake moisture, washing requirements); material samples are welcome for selection testing so that the machine is correctly specified the first time. Technical parameters are subject to the product specification sheet.