Product Introduction
The rotary drum mechanical grid, also known as the fine grid filter or spiral grid machine, is a device that integrates a fine grid cleaning machine, a spiral slag lifting machine, and a spiral slag pressing machine. It is an ideal equipment for separating floating, settling, and suspended substances in urban sewage treatment plants and industrial wastewater treatment processes. It is widely used for solid-liquid separation, filter residue cleaning, transportation, and press dewatering in urban domestic sewage plants and industrial wastewater treatment projects.
Working principle
The drum type mechanical grille is made of grille plates that form a drum shaped basket according to the gap between the grids. The water to be treated flows in front of the basket, filters through the grille, and flows to the outlet of the water tank. The slag is trapped on the surface of the grille. When the water level difference inside and outside the grille reaches a certain value, the rotating toothed rake installed on the central shaft rotates back to clean the dirt. When the slag cleaning toothed rake collects the dirt to the top of the basket, it begins to unload the slag (the slag that can fall by its own weight is discharged into the slag groove); After each subsequent 15 ° rotation, the slag adhered to the rake teeth is automatically scraped off by the cleaning teeth plate at the top of the basket and discharged into the slag groove. The slag is lifted by the spiral conveyor at the bottom of the groove, and after being pressed and dehydrated in the upper pressing section, it is unloaded onto the conveyor belt or transported outside the garbage truck. After being pressed and dehydrated, the solid content of the filter residue can reach 25% -45%, which plays an important role in reducing transportation costs and preventing secondary pollution.
scope of application
Pre treatment of domestic sewage treatment equipment; Removal of debris from water intake and drainage outlets in factories, hospitals, residential areas;
Material separation of industrial wastewater from mining, papermaking, chemical fiber, textile, printing and dyeing industries; Used for decontamination, slag removal, and dewatering in the later stage of sewage treatment plants; Decontamination, slag removal, and pressing dewatering of industrial wastewater treatment projects;
main features
1. Compact structure, almost entirely made of stainless steel, with sufficient corrosion resistance and strength, capable of long-term use in harsh environments;
2. Low speed smooth operation, low energy consumption, low operating noise, large filtration area, and low hydraulic loss;
3. The grille and water flow form an angle of about 35 °, and due to the effect of the baffle, even many pollutants with a thickness smaller than the grille gap can be separated;
4. Integrating functions such as salvage, transportation, and pressing, the structure is compact and reduces the cost of subsequent waste disposal.