Grid For Sewage Equipment For Environmental Protection Equipment

The trash rack consists of frame Composed of diaphragm and grating (as shown in the figure, it is supported on the concrete pier wall and is generally made of steel. The spacing of grid bars depends on the size and application requirements of the dirt. The spacing of grid bars used in Hydropower Station depends on the model and size of the turbine, so that the dirt passing through the trash rack will not be stuck in the flow-through parts of the turbine. Generally, trash racks are not set in the discharge tunnel and outlet. If the hole diameter or aperture is small and there are many sunken trees, the spacing of grid bars should be increased. The location of trash racks Loaded

In addition to self weight, it is mainly the water load caused by the water level difference before and after the grid after the dirt is blocked, which is generally considered as 2 ~ 4m water head. The size of the trash rack depends on the flow through the rack and the allowable flow rate through the rack. In order to reduce head loss and facilitate sewage removal, the flow velocity through the grid is generally required to be no more than about 1.0m/s. The trash rack can be made into fixed or capable of lifting.