Peripheral Drive Sludge Scraper
We primarily provide a comprehensive range of ancillary products for water supply and wastewater treatment systems, including trash interception, chemical dosing and reaction, sedimentation, water collection, sludge removal, and filtration, as well as biological media and aerators for wastewater treatment projects.
I. Uses
Peripheral-drive sludge scrapers are suitable for radial-flow sedimentation tanks of medium and large diameters with central inflow, peripheral outflow, and central sludge discharge; they are primarily used for sludge removal in the primary sedimentation tanks of municipal wastewater treatment plants.
II. Structure and Operating Principle
This equipment employs peripheral drive: sewage enters the tank through an inlet pipe at the center, is diffused by a flow-stabilizing cylinder, and then flows radially outward in a uniform manner toward the periphery. Suspended sludge settles to the tank bottom after sedimentation. The drive unit rotates the working bridge along the perimeter, which in turn drives the scraper arm and sludge scraper; under the action of the static water pressure within the tank, the settled sludge is discharged from the tank via the sludge discharge pipe. Floating scum on the water surface is skimmed toward the tank edge by a skimming device and then scraped into the sludge collection hopper by a skimming rake for removal from the tank. Meanwhile, the supernatant liquid overflows through a triangular effluent weir into the effluent trough and is conveyed away.
III. Model Description
IV. Table of Main Technical Parameters and Installation Dimensions
| Model/Specifications | 16 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | |
| Pool diameter φ (m) | 16 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | |
| Peripheral pool depth H1 (m) | 3.5–4.5 (to be determined based on user requirements) | |||||||||
| Water depth at the pool edge H2 (m) | 3.0–4.0 (to be determined based on user requirements) | |||||||||
| Peripheral linear speed V (m/min) | 1.8–2.2 | |||||||||
| Walking wheel size (mm) | φ400×120 | φ420×150 | ||||||||
| Motor power N (kW) | 0.37 | 0.55 | 0.75 | |||||||
| Installation dimensions (mm) | Center tube diameter φ1 | 1100 | 1100 | 1200 | 1200 | 1500 | 1500 | 1800 | 1800 | 1800 |
| Center platform diameter φ2 | 2500 | 2500 | 2500 | 3500 | 4000 | 4500 | 5000 | 5500 | 6000 | |
| Outer diameter of the platform-embedded steel plate: φ3 | 2600 | 3000 | 3800 | 4500 | 4500 | 4500 | 5000 | 6000 | 6000 | |
| Inner diameter φ4 of the embedded steel plate on the platform | 2100 | 2300 | 3500 | 4000 | 4000 | 4000 | 4500 | 4500 | 4500 | |
| Outlet tank height H2 | 500 | 500 | 600 | 760 | 760 | 760 | 760 | 760 | 760 | |
| Outlet trough width B | Customized according to user requirements | |||||||||
| The center-to-wall distance of the sink is L. | Customized according to user requirements | |||||||||
| Peripheral Wheel Pressure P1 (kN) | 9.0 | 11.5 | 15 | 19 | 22 | 25 | 28 | 30 | 32 | |
| Vertical Load on the Central Platform P2 (kN) | 17 | 23 | 30 | 37 | 82 | 100 | 112 | 122 | 175 | |
| Horizontal Load on the Central Platform P3 (kN) | 9.5 | 13 | 17 | 22 | 28 | 28 | 30 | 32 | 40 | |
V. Main Features
1. The working bridge may be configured as a half-bridge or a full-bridge, and its material may be carbon steel or stainless steel.
2. The drive unit employs a shaft-mounted helical gear reducer directly coupled to the drive roller, resulting in a compact structure and high mechanical efficiency.
3. The scraper collects sludge along a logarithmic spiral trajectory, ensuring smooth operation and high sludge-collection efficiency.
4. A pond bottom slope of 1:10 can reduce resistance during sludge scraping.
Meticulous Design
- Customized Drainage Treatment Blueprint
Leveraging a highly professional team and extensive experience, we meticulously design water supply and wastewater treatment solutions tailored to the specific needs of each region and project. Our comprehensive offerings include multi-system designs for debris interception, chemical dosing and reaction, and other critical processes, providing scientifically sound, customized engineering design services for wastewater treatment projects.
Diverse Products
- Forging a powerful tool for wastewater treatment
As a specialized manufacturer of water supply and drainage treatment equipment and materials, we offer a comprehensive range of complementary products, including systems for water supply and drainage treatment as well as bio-media and aerators tailored for wastewater treatment projects. Our extensive product portfolio meets a wide variety of application needs.
Professional Installation
- Ensure the drainage system operates smoothly
We boast a professional installation team that provides efficient installation services to customers across more than 20 provinces (including municipalities directly under the central government), as well as Hong Kong, Macao, and Southeast Asia. Adhering rigorously to standardized procedures, we ensure precise and flawless installation of water supply and wastewater treatment equipment, thereby guaranteeing stable system operation.
Keywords: trash-rack equipment, sedimentation equipment, flap-valve filter bed
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Yuhuan Longxi Water Purification Equipment Co., Ltd.
Phone: +86-576-87418379 / 87423632
E-mail: cnzhlj@163.com
Fax: +86-576-87418269
Address: No. 6, Huinhai North Road, Shamen Town, Yuhuan City, Taizhou City, Zhejiang Province, China.
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