The grille, also known as steel grille, steel grating or grille plate, is welded by flat steel and twisted steel. The main use of the grille is in resting platforms, walkways, gutter covers and tread plates. It is also used in environmental protection equipment and sewage treatment. The grille is widely used in petrochemical, electric power, tap water, sewage treatment, port and dock, architectural decoration, shipbuilding, self-propelled parking lot, municipal engineering, sanitation engineering and other platforms. Walkways, trestles, trench covers, manhole covers, ladders, fences, etc.
According to the size of the grid spacing, the grid is divided into three types: coarse grid, medium grid and fine grid. According to the slag removal method of the grille, there are three kinds of manual grille, mechanical grille and hydraulic removal grille. According to the different characteristics of the grid structure, it can be divided into a variety of forms such as grab harrow type, circulation type, arc shape, rotary type, rotary drum type, rotary type, tooth harrow type and step type.
The grid equipment is generally used in the inlet channel of sewage treatment or the entrance of the lifting pond of the pump station. The main function is to remove the larger suspended or floating substances in the sewage to reduce the processing load of the subsequent water treatment process and play a role. Protect water pumps, pipelines, meters, etc. When the intercepted grid slag amount is greater than 0.2m3 / d, the mechanical slag cleaning method is generally used; when the grid slag amount is less than 0.2m3 / d, manual slag cleaning method or mechanical slag cleaning method may be used.