Stainless Steel Suspended Central Drive Sludge Scraper for Municipal Sewage Treatment
This centrally-driven suspended sludge scraper is primarily designed for circular sedimentation tanks in municipal wastewater treatment plants. Its core function is to collect settled sludge from the tank floor and direct it to a central sump for subsequent processes like return pumping, thickening, or dewatering. Simultaneously, it removes floating scum from the water surface, channeling it into a scum hopper for discharge and further treatment.
Working Principle
Powered by an electric drive unit, the central drive slowly rotates the suspended scraper assembly. Attached scrapers efficiently move settled sludge towards the central sludge sump. To enhance thickening, the scraper arms gently rotate a set of picket fences (thickening grid bars). This slow stirring action creates channels within the sludge, facilitating water release and improving dewatering and compaction.
Key Features
Robust & Lightweight Design: Utilizes a truss structure, offering a high strength-to-weight ratio and reducing structural load compared to traditional designs.
Low Operational Cost: Features simple maintenance procedures and highly reliable components, ensuring cost-efficient operation.
Efficient Drive System: Employs a planetary gear reducer known for its compact size, high torque output, easy installation, and superior efficiency.
Comprehensive Control: All electrical components are rated for outdoor use. The system offers safe and reliable operation with options for both local and remote control.
Customizable Construction: Can be manufactured to fit specific tank dimensions. Critical components in contact with water can be constructed from stainless steel for enhanced corrosion resistance.
Primary Components
The central drive suspended scraper system consists of the following main parts:
Main Drive Unit: The central power source, typically incorporating a planetary gear reducer.
Working Bridge: Provides structural support and access across the tank.
Central Support / Column: The central pivot point that supports the rotating assembly.
Stabilizing Cylinder (Flow Cylinder): Helps stabilize flow within the tank.
Scraper Truss / Arms: The rotating structure that supports the scraping elements.
Sludge Scraper Blades: Attachments that push the sludge along the tank floor.
Thickening Grid Bars (Picket Fences): Aids in sludge thickening by creating water escape paths.
Scum Skimmer: Removes floating scum from the water surface.
Scum Hopper & Overflow Weir: Collects and discharges removed scum and defines the water level.
Control Electric Box: Houses the electrical controls for the system.
Product Parameters
|
Parameter / model Pool widthΦ(m) |
ZBGX-16 | ZBGX-20 | ZBGX-25 | ZBGX-30 | ZBGX-35 | ZBGX-40 | ZBGX-45 | ZBGX-50 | ZBGX-55 | |
| 16 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | ||
| Deep pool depth H(m) | 3.5～4.5(According to the user's requirements) | |||||||||
| Pool side water depth H2(m) | 3.0～4.0(According to the user's requirements) | |||||||||
| Around the line speed V(m／min) | 1.8~2.2 | |||||||||
| Walking wheel dimensions (mm) | 400x120 | 420x150 | ||||||||
| Power of motor N(KW) | 0.37 | 0.55 | 0.75 | |||||||
| Installation size (mm) | Φ1 | 1100 | 1100 | 1200 | 1200 | 1500 | 1500 | 1800 | 1800 | 1800 |
| 2 | 2500 | 2500 | 2500 | 3500 | 4000 | 4500 | 5000 | 5500 | 6000 | |
| Φ3 | 2600 | 3000 | 3800 | 4500 | 4500 | 4500 | 5000 | 6000 | 6000 | |
| Φ4 | 2100 | 2300 | 3500 | 4000 | 4000 | 4000 | 4500 | 4500 | 4500 | |
| H2 | 500 | 500 | 009 | 760 | 760 | 760 | 760 | 760 | 760 | |
| B | According to the user's requirements | |||||||||
| H3 | According to the user's requirements | |||||||||
| L | According to the user's requirements | |||||||||
| Around the wheel pressure P1(KN) | 9.0 | 11.5 | 15 | 19 | 22 | 25 | 28 | 30 | 32 | |
| Vertical load of the central platform P2(KN) | 17 | 23 | 30 | 37 | 82 | 100 | 112 | 122 | 175 | |
| Center load of center load P3(KN) | 9.5 | 13 | 17 | 22 | 28 | 28 | 30 | 32 | 40 | |
