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Suspended Center Drive Mud Scraper for Wastewater Treatment
The WNG Type Suspended Center Drive Mud Scraper is specialized equipment designed for gravity sludge thickening tanks in wastewater treatment plants. This system efficiently collects and concentrates thickened sludge from the tank periphery to the central collection pit, preparing it for subsequent dewatering processes.
Equipment Overview
Featuring a suspended center drive configuration, this mud scraper system includes a vertical reducer with electric motor, external tooth slewing bearing, main shaft, scraper arms and blades, concentration grids, steady flow cylinder, and control cabinet. The transmission unit drives slow rotation of scraper arms around the tank's central axis for optimal sludge concentration.
Technical Specifications
Key Parameter
WNG4 / WNG5
WNG6
WNG7
WNG8 / WNG9
WNG10
WNG12
WNG14
WNG16
Tank Dia. D1 (m)
4 / 5
6
7
8 / 9
10
12
14
16
Arm Dia. D2 (m)
3.6 / 4.6
5.6
6.6
7.6 / 8.6
9.6
11.6
13.6
15.6
Edge Depth h1 (m)
3
3
3
3.6
3.6
4
4.4
4.8
Pit Height h2 (m)
0.5
0.5
0.5
0.6
0.6
0.6
0.6
0.6
Pit Top Dia. D3 (m)
1.2
1.2
1.2
1.5
1.5
2
2
2
Bridge Width Fmin (mm)
≥ 1000
≥ 1000
≥ 1000
≥ 1000
≥ 1000
≥ 1200
≥ 1200
≥ 1200
Scraper Linear Speed (m/min)
1~3
1~3
1~3
1~3
1~3
1~3
1~3
1~3
Motor Power (KW)
0.37~0.55
0.37~0.55
0.37~0.55
0.37~0.55
0.37~0.55
0.37~0.55
0.37~0.55
0.37~0.55
Key Advantages
Bearing-Free Tank Bottom Design: Eliminates maintenance requirements in harsh sludge environments with a high-rigidity tubular main shaft structure that requires no bottom bearings
Intelligent Over-Torque Protection: Advanced safety system automatically cuts power and triggers alarms when scraper jamming occurs, preventing motor damage and ensuring operational safety
High-Efficiency Suspended Drive: Compact central transmission design reduces mechanical components, increases efficiency, and saves both space and energy consumption
Frequently Asked Questions
Why are there no bearings at the bottom of the tank? Is it stable enough?
The system is extremely stable. The main shaft is specifically engineered with a high-rigidity tubular structure that supports the entire suspended scraping mechanism. This design eliminates the need for maintenance in the highly corrosive, hazardous environment at the bottom of sludge tanks.
If large debris jams the scraper blades underwater, will the motor burn out?
No. The equipment features an intelligent over-torque protection mechanism. When excessive torque from jamming or heavy sludge accumulation reaches the safety threshold, the system automatically cuts power, triggers alarms, and shuts down to protect both motor and mechanical components.
Can the start, stop, and running times be integrated into our automation system?
Yes. Electrical control parameters can be customized to user requirements. The control cabinet includes PLC interface compatibility for seamless integration into water plant central control systems, enabling fully automated and remote operation.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2001
Total Annual:
40000000-70000000
Employee Number:
80~100
Ecer Certification：
Verified Supplier
Nanjing Lanjiang is a professional manufacturer integrating the design, research and development, production, and sales of wastewater treatment equipment. The company is located at No.18 Xinyu Road, Hengliang Street, Liuhe District, in the northern suburbs of Nanjing (adjacent to the Ningtong Expres... Nanjing Lanjiang is a professional manufacturer integrating the design, research and development, production, and sales of wastewater treatment equipment. The company is located at No.18 Xinyu Road, Hengliang Street, Liuhe District, in the northern suburbs of Nanjing (adjacent to the Ningtong Expres...
