Shaftless Screw Press Filter Screen
Shaftless Screw Press Filter Screen
The shaftless screw press filter screen is used to separate solids from wastewater. It combines screening and conveying in one compact unit. Water passes through a perforated screen while solids are captured. A shaftless screw moves the collected material, and built-in brushes keep the screen clean and prevent clogging. Some models also include a compaction zone to reduce the volume of waste before discharge. It runs continuously, works reliably, and needs very little maintenance. With flexible installation options and custom setups, it’s suitable for a wide range of municipal and industrial applications where space-saving and efficient screening are important.
| Model | Flow Level (mm) | Width (mm) | Screen Basket (mm) | Grinder Model | Max Flow
(MGD/l/s) |
Grinder Power (kW) | Screw Power (kW) |
| AQT-S12 | 305–1524 | 356–610 | 300 | — | 280 | — | 1.5 |
| AQT-S16 | 457–1524 | 457–711 | 400 | — | 425 | — | 1.5 |
| AQT-S20 | 508–1524 | 559–813 | 500 | — | 565 | — | 1.5 |
| AQT-S24 | 610–1524 | 660–914 | 600 | — | 688 | — | 1.5 |
| AQT-S27 | 762–1524 | 813–1067 | 680 | — | 867 | — | 1.5 |
| AQT-SL12 | 305–1524 | 356–610 | 300 | TM500 | 153 | 2.2–3.7 | 1.5 |
| AQT-SLT12 | 356–1524 | 457–1016 | 300 | TM14000 | 342 | 2.2–3.7 | 1.5 |
| AQT-SLD16 | 457–1524 | 914–1524 | 400 | TM14000d | 591 | 3.7 | 1.5 |
| AQT-SLX12 | 356–1524 | 559–610 | 300 | TM1600 | 153 | 5.6–11.2 | 1.5 |
| AQT-SLX16 | 457–1524 | 559–711 | 400 | TM1600 | 245 | 5.6–11.2 | 1.5 |
Features
Standard Features
- Perforated screen panel (1–6 mm openings) for effective solids retention
- Shaftless screw conveyor for efficient solids transport
- Self-cleaning brush system to prevent clogging
- Integrated screening and conveying in one unit
- Optional compaction module for volume reduction of screenings
- Gear motor drive system for continuous operation
- Compact structure for easy installation
Options & Accessories
- Washing system (manual or automatic via solenoid valve)
- Channel or tank-mounted installation configuration
- Variable inclination angle design (35°–45°)
- Different screen sizes and perforation options
- Customised system dimensions and capacity
Working Principle
The Shaftless Screw Press Filter Screen operates through a combined screening and conveying process. Wastewater enters the filtration zone, where a perforated screen panel with openings typically ranging from 1 to 6 mm retains solids while allowing water to pass through. A shaftless screw rotates within the screen, continuously transporting the captured solids toward the discharge end. During operation, brushes mounted on the screw clean the screen surface to prevent clogging and maintain filtration efficiency.
As the solids move upward, they may enter a compact zone, where additional dewatering reduces their volume before discharge. The treated water flows out of the system, while solids are conveyed for disposal.
Key Benefits
- Efficient Solid-Liquid Separation
Effectively removes suspended solids through continuous screening, maintaining reliable filtration performance while allowing smooth wastewater flow. - Reduced Screening Volume and Disposal Cost
Optional compaction reduces the volume and weight of screenings, improving handling efficiency and lowering disposal costs. - Reliable Continuous Operation
Designed for stable and uninterrupted operation, ensuring consistent performance in municipal and industrial applications. - Low Maintenance and Long Service Life
Shaftless design reduces clogging and wear, minimising maintenance requirements and extending equipment lifespan. - Anti-Clogging Performance
Self-cleaning brushes continuously clean the screen surface, preventing blockage and maintaining filtration efficiency. - Flexible Installation and Integration
Can be installed in channels or tanks with adjustable inclination, allowing easy integration into different system layouts.
Key Benefits
- Efficient Solid-Liquid Separation
Effectively removes suspended solids through continuous screening, maintaining reliable filtration performance while allowing smooth wastewater flow. - Reduced Screening Volume and Disposal Cost
Optional compaction reduces the volume and weight of screenings, improving handling efficiency and lowering disposal costs. - Reliable Continuous Operation
Designed for stable and uninterrupted operation, ensuring consistent performance in municipal and industrial applications. - Low Maintenance and Long Service Life
Shaftless design reduces clogging and wear, minimising maintenance requirements and extending equipment lifespan. - Anti-Clogging Performance
Self-cleaning brushes continuously clean the screen surface, preventing blockage and maintaining filtration efficiency. - Flexible Installation and Integration
Can be installed in channels or tanks with adjustable inclination, allowing easy integration into different system layouts.
Working Principle
The Shaftless Screw Press Filter Screen operates through a combined screening and conveying process. Wastewater enters the filtration zone, where a perforated screen panel with openings typically ranging from 1 to 6 mm retains solids while allowing water to pass through. A shaftless screw rotates within the screen, continuously transporting the captured solids toward the discharge end. During operation, brushes mounted on the screw clean the screen surface to prevent clogging and maintain filtration efficiency.
As the solids move upward, they may enter a compact zone, where additional dewatering reduces their volume before discharge. The treated water flows out of the system, while solids are conveyed for disposal.
Features
Standard Features
- Perforated screen panel (1–6 mm openings) for effective solids retention
- Shaftless screw conveyor for efficient solids transport
- Self-cleaning brush system to prevent clogging
- Integrated screening and conveying in one unit
- Optional compaction module for volume reduction of screenings
- Gear motor drive system for continuous operation
- Compact structure for easy installation
Options & Accessories
- Washing system (manual or automatic via solenoid valve)
- Channel or tank-mounted installation configuration
- Variable inclination angle design (35°–45°)
- Different screen sizes and perforation options
- Customised system dimensions and capacity
| Model | Flow Level (mm) | Width (mm) | Screen Basket (mm) | Grinder Model | Max Flow
(MGD/l/s) |
Grinder Power (kW) | Screw Power (kW) |
| AQT-S12 | 305–1524 | 356–610 | 300 | — | 280 | — | 1.5 |
| AQT-S16 | 457–1524 | 457–711 | 400 | — | 425 | — | 1.5 |
| AQT-S20 | 508–1524 | 559–813 | 500 | — | 565 | — | 1.5 |
| AQT-S24 | 610–1524 | 660–914 | 600 | — | 688 | — | 1.5 |
| AQT-S27 | 762–1524 | 813–1067 | 680 | — | 867 | — | 1.5 |
| AQT-SL12 | 305–1524 | 356–610 | 300 | TM500 | 153 | 2.2–3.7 | 1.5 |
| AQT-SLT12 | 356–1524 | 457–1016 | 300 | TM14000 | 342 | 2.2–3.7 | 1.5 |
| AQT-SLD16 | 457–1524 | 914–1524 | 400 | TM14000d | 591 | 3.7 | 1.5 |
| AQT-SLX12 | 356–1524 | 559–610 | 300 | TM1600 | 153 | 5.6–11.2 | 1.5 |
| AQT-SLX16 | 457–1524 | 559–711 | 400 | TM1600 | 245 | 5.6–11.2 | 1.5 |
