A trash rack is a frame-grid structure installed in front of the intake of hydraulic engineering, primarily used to block floating debris (such as aquatic plants, branches, etc.) in the water flow, preventing it from clogging equipment. The GQ type trash cleaning machine is a device used to block and remove debris in water, and the two are often used in combination.
Structure and Function of the Trash Rack
The trash rack consists of a steel frame, transverse partitions, and grid bars, supported on concrete piers and walls. The spacing between the grid bars is determined based on the size of the debris and the turbine model. It is typically installed in front of the hydropower station intake, with an upright semi-circular structure that effectively blocks floating debris. Its load is designed for a water head pressure of 2-4 meters, and the flow velocity through the rack is controlled within 1.0 m/s to reduce head loss.
Features and Uses of the GQ Type Trash Cleaning Machine
The GQ type grid trash cleaning machine is mainly used at the water intakes of hydropower stations and pumping stations. It forcibly removes floating debris in water using a rake to prevent debris from entering the diversion channel. It features a compact structure, stable operation, low resistance, and easy maintenance, making it suitable for medium and coarse grid scenarios.
Scenarios of Combined Use
In hydropower station construction, the trash rack first blocks large floating debris, while the GQ type trash cleaning machine handles the remaining fine debris, forming a dual protection system. For example, the GQ type trash cleaning machine produced by Xinhe County Haochuan Hydraulic Equipment Factory is often used in combination with equipment such as cast iron gates and hydraulic hoists, applied in fields like hydroelectric power generation, flood control, and drainage.