Product Information
Designed specifically for large-scale water conservancy facilities, the Hydropower Trash Rake (SL Hydraulic Trash Rack Cleaner) is used to intercept and remove waterweeds, branches, and domestic waste from flowing water. Using a mobile cleaning rake or grab, it travels up and down the inclined trash rack to scrape off debris attached to the bars and lift it to the dam crest for discharge. This effectively prevents floating debris from clogging the intake and ensures the safe operation of hydro-turbines and water diversion systems.
Get a QuoteHydropower Trash Rake | SL Hydraulic Trash Rack Cleaner | Trash Rack Cleaning Machine
Working Principle
The unit is installed above the trash rack at the intake or diversion channel. During operation, the drive mechanism lowers the cleaning rake (or grab) underwater along the guide rails. Once the rake teeth engage the gaps in the trash rack, the unit begins lifting, scraping the intercepted debris up along the rack surface. At the top, the rake flips or opens to discharge the trash into a collection trough or conveyor. This Hydropower Trash Rake features powerful cleaning capabilities and anti-jamming protection, adapting well to complex flow conditions.
Application Fields
1.Hydropower stations: clearing waterweeds, branches, and large floatables from intake trash racks.
2.Large reservoirs and water diversion projects: intercepting and removing debris from channels to ensure smooth flow.
3.Municipal flood control and drainage pumping stations: rapidly clearing large trash and aquatic plants from forebays during flood season.
4.Large water treatment plant intakes: retrieving floatables from raw water to reduce the load on downstream processes.
FAQ
Q1: Are there specific requirements for the installation angle of the trash rack for this Hydropower Trash Rake?
A: Yes. To ensure the rake can smoothly scrape debris along the rack surface, trash racks are usually designed with an inclination angle of 60° to 75°. If it's too steep, debris is hard to scrape off; if it's too flat, the lifting resistance becomes too high.
Q2: How do you monitor the cleaning effect when the machine operates underwater?
A: Large hydropower stations usually install underwater cameras at the intake or rely on the water level difference across the rack. When the difference reaches a set point, it indicates the rack is clogged, and the system will prompt the cleaning process to start.
Q3: Does the equipment require constant manual operation?
A: No. Modern hydropower trash rakes typically use PLC automatic control. They can automatically trigger the cleaning sequence (lowering, grabbing, lifting, and discharging) based on a set timer or water level difference, requiring no dedicated operator on standby.