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Home » Products » Solid Liquid Separation Equipment » Belt Filter Press » Advanced Dewatering Belt Filter Press Working Principle

Advanced Dewatering Belt Filter Press Working Principle

Toncin belt filter press is a high-efficiency solid-liquid separation device based on the principles of chemical flocculation contact filtration and mechanical extrusion. It features a simple process flow, high automation, continuous operation, convenient control, and adjustable working parameters. When used in conjunction with a gravity thickener, it can eliminate the need for a material concentration tank, thereby saving construction costs to some extent. As a result, it is gaining increasingly widespread application across various industries.

Currently, the belt filter press is widely used for sludge dewatering in municipal sewage, textile printing and dyeing, electroplating, papermaking, leather, brewing, food processing, coal washing, petrochemicals, chemical industry, metallurgy, pharmaceuticals, ceramics, and other sectors. It is also suitable for solid-liquid separation or leaching processes in industrial production.

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  • DYZ

  • Toncin


Product Introduction:

 

Toncin belt filter press is a high-efficiency solid-liquid separation device based on the principles of chemical flocculation contact filtration and mechanical extrusion. It features a simple process flow, high automation, continuous operation, convenient control, and adjustable working parameters. When used in conjunction with a gravity thickener, it can eliminate the need for a material concentration tank, thereby saving construction costs to some extent. As a result, it is gaining increasingly widespread application across various industries.

Currently, the belt filter press is widely used for sludge dewatering in municipal sewage, textile printing and dyeing, electroplating, papermaking, leather, brewing, food processing, coal washing, petrochemicals, chemical industry, metallurgy, pharmaceuticals, ceramics, and other sectors. It is also suitable for solid-liquid separation or leaching processes in industrial production.

 

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Technical Features

 

DYZ Belt Filter Press is suitable for sludge dewatering systems in large-scale water treatment projects and for material dewatering in industrial and mining enterprises under various harsh conditions.


1. High Structural Rigidity, Stable Operation, Low Noise Level.
2. Equipped with Advanced Pre-thickening Devices for Effective Sludge Flocculation and Low Operating Costs.
3. The Gravity Dewatering Zone Features an Advanced Distributor for Even Material Spreading, Extending Filter Belt Life.
4. Extra-long Gravity and Wedge Dewatering Zones Ensure Thorough Preliminary Dewatering, Preventing Material Overflow in the Press Zone.
5. Scientifically Arranged Roller System Allows Separate and Uninterrupted Drainage in the Gravity, Wedge, and Press Dewatering Stages.
6. Large Diameter Ratio of Press Rollers Enhances Dewatering Efficiency, Resulting in High Processing Capacity with Energy Savings.
7. Fully Continuous Operation from Feeding to Cake Discharge. Highly Automated with Optional PLC Interface for Centralized Computer Control.
8. Drive System Utilizes Mechanical or Frequency Conversion Stepless Speed Regulation, Offering Wide Adjustable Range and Strong Adaptability.
9. Reliable Backwash System Ensures Consistent Dewatering Performance of the Filter Belt.
10. Pneumatic Tensioning and Automatic Tracking Devices Guarantee Safe and Stable Filter Belt Operation.
11. Safe and Reliable Operation with Infrared Safety Guards and Comprehensive Emergency Stop Systems.
12. Available with Various Filter Belt Specifications to Suit Different Materials, Ensuring High Filtration Precision.

 

 

Product Parameters:

 

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Operating Principle:

      

     

1. Pre-treatment Stage
The flocculated material is evenly distributed on the filter belt. Under gravity, free water outside the flocs separates, reducing the moisture content of the sludge flocs and weakening their fluidity. The dewatering efficiency at this stage depends on the properties of the filter belt, the characteristics of the material, and the flocculation effect of the sludge. Gravity dewatering removes a significant portion of the water from the sludge.

2. Wedge Pre-pressing Dewatering Stage
After gravity dewatering, the material still retains relatively high fluidity, which does not meet the requirements for the pressing stage. Therefore, a wedge pre-pressing section is incorporated between the gravity dewatering and pressing stages. Through slight extrusion, surface free water is further removed, significantly reducing fluidity and preventing the material from being squeezed out during subsequent pressing. This creates stable conditions for effective pressing dewatering.

3. Pressing Dewatering Stage
After passing through the wedge pre-pressing stage, the material enters the pressing dewatering zone, which consists of a series of rollers arranged in descending order of diameter. As the roller diameter gradually decreases, the pressure on the material progressively increases. Simultaneously, shear forces are applied as the material passes over the rollers, removing most of the saturated water and completing the final dewatering process.

                                                                                             DY belt filter press


Why Choose Our Belt Filter Press?


Lower Total Operating Costs

  • Reduced Chemical Use: Advanced flocculation systems and optimized dewatering paths significantly cut down on flocculant (PAM) consumption.

  • Savings on Water & Power: Efficient backwash systems and scientific roller press design lower water usage for cleaning and reduce drive power consumption.

  • Lower Labor Costs: High automation (auto-tracking, tensioning, cake discharge) and durable design greatly decrease daily operational and maintenance demands.

More Stable and Reliable Performance

  • Robust & Durable: The core structure uses heavy-duty design and high-strength materials (e.g., stainless steel, rubber-coated rollers), ensuring long-term stable operation in harsh conditions with low failure rates.

  • Intelligent Self-Protection: Integrated pneumatic auto-tracking, infrared safety guards, and emergency stop systems effectively prevent belt misalignment, damage, and personnel accidents, ensuring safe and continuous production.

Superior Dewatering Results & Processing Capacity

  • Drier Cake: Unique multi-stage dewatering design featuring "extended gravity zone + wedge zone + high-pressure roller zone" achieves pressures up to 12 bar, ensuring lower sludge cake moisture content and reducing disposal costs.

  • Higher Throughput: Scientifically arranged roller systems and optimized belt speed control enable greater processing capacity per unit time and higher overall efficiency.

High Flexibility & Smart Control

  • Customizable Configuration: Can be equipped with different filter belt specifications and pre-treatment devices based on your specific material characteristics (e.g., municipal sludge, industrial waste) and precision requirements.

  • Easy Control: Supports variable frequency drive for stepless speed regulation and PLC interfaces, allowing for easy integration into central control systems for intelligent management and remote monitoring.

Comprehensive Professional Support

  • Proven Expertise: Our products have been successfully applied in dozens of industries (e.g., municipal, dyeing & printing, papermaking, chemical), backed by extensive case studies, enabling us to provide you with mature process solutions.

  • Full-Cycle Service Guarantee: We offer complete lifecycle technical support—from solution design, installation, and commissioning to operator training and after-sales maintenance—ensuring you have no post-purchase worries.

In summary, our equipment is not just an efficient dewatering machine; it is a solution dedicated to helping you "reduce costs, improve efficiency, and achieve stable, worry-free operation."


 

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Service Support

 

  • Whole Technological Design

    Toncin determines reasonable plans and selections by conducting more systematic laboratory tests, semi-industrialization tests and theoretical analysis calculations and adopting appropriate methods in light of the actual problems faced by customers. And it determines specific parameters through laboratory tests and semi-industrial tests.


  • Project Construction

    Toncin can provide customers with integrated project services for its perfect project management system and experienced high-quality team and can also provide customers with its best services in achieving the ultimate project goal by carrying out the management work on the project quality, schedule, safety, cost, procurement, information files, organization and coordination etc. according to customer’s contractual documents. Toncin contracts the design, procurement, construction and trials etc. for the entire process or some certain stages of the construction project according to the contract and takes full liability for the quality, safety, duration and cost etc. of the contracted project.



Response Time and After-sales Services

If any failure due to a defect has occurred during the warranty period, our company has given the following response and promise: to respond within 12 hours and rush to the domestic scene within 72 hours. With a rigorous and efficient service architecture, diverse and flexible service and response means, Toncin is capable of providing response service up to 7* 24 hours to ensure that users can get help at any time during the warranty period.



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Nuclear Industry Yantai Toncin Group Co., Ltd. Currently own 5 state-level high-tech enterprises, maintain 177 valid patents, including 38 invention.......
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