The rotary mechanical grid is a set of rotary grid chains assembled by rake teeth.
Driven by the motor reducer, the rake tooth chain rotates against the direction of the water flow. When the rake tooth chain runs to the upper part of the equipment, due to the guidance of the sheave wheel and the curved rail, a relative self-cleaning motion occurs between each group of rake teeth, and most of the solid materials fall down by gravity. The other part relies on the reverse movement of the sweeper to clean up the debris stuck on the rake teeth. According to the direction of water flow, the rake tooth chain is similar to the grille, and the rake tooth gap assembled on the rake tooth chain shaft can be selected according to the usage conditions. When the rake teeth separate the solid suspended matter in the fluid, the water can flow smoothly.
The whole working process is continuous or intermittent.
So compared with other types of equipment products, what are the advantages of mesh grille equipment? The use of grid equipment can remove the residues in the water, and avoid the pollutants remaining in the water and increasing the processing problems, which cannot be replaced by traditional equipment products. In addition, the grille equipment will not be blocked when dealing with dirt in the water. The equipment mainly uses the rake teeth to pick up the impurities in the water. Because the production technology has been improved, the rake teeth are more efficient and stable during operation, and can effectively avoid failures question.
Mechanical Fine Screen Composition
Parts of the fine grille of the inner inflow mesh plate frame; Drive System; Stencil System; backwash system; Division system and Electronic control system;
The geared motor drives the sprocket to rotate. The sprocket drives the mesh plate to rotate continuously; the sewage enters the grille from the water inlet, and passes through the mesh plate to overspeed. The water flows to the outside of the screen plate, and the dirt is left on the inner surface of the same plate. With the continuous rotation of the screen plate, it helps to the original part: the backwash system flushes the outside of the screen plate, and the dirt is washed to the receiving channel under the action of the flushing water. Feel free to check the flushing water from the well to the sewage outlet.
Mechanical Fine Screen Parameter
Grid width A（mm）
Grid well widthmm）
Effective filter width (mm)
Grid well depth H（mm）
Installation angle °
2 3 5 6 8 10
Running speed （m/min）
Less than 3
Main drive power (KW)
Cleaning power (KW)
Cleaning pressure (Mpa)
More than 0.3
Design maximum water level difference (m)
CapacityMesh diameter with 3mm (m3/hr)
CapacityMesh diameter with 4-6mm (m3/hr)
CapacityMesh diameter with 7-10mm (m3/hr)
Mechanical Fine Screen Advantage
The closed traction chain and the guide rails on both sides of the equipment form a closed transmission chain, which can prevent debris from entering and blocking the traction chain, and the operation is stable and reliable.
The equipment above the channel is enclosed by a housing with a removable inspection cover to facilitate the collection of odors.
The operation is simple, the failure rate is low, and the wearing parts are greatly reduced compared with the rake tooth grille.
The slag discharge is clean and there is no entanglement, thus improving the filtration efficiency.
Smooth operation, low noise; light rotating parts, low energy consumption.
Simple structure, easy installation and maintenance.
Mechanical Fine Screen Options
Sewage flows in from the middle of the grille and flows out from both sides through the filter plate.
Compact structure, small footprint and large processing capacity, can adapt to the fluctuation of influent liquid level, small water head loss, high efficiency, high retention of filter residues, fibers and other substances, fully enclosed, light and light cover plate, easy to open and close, no filter residue material flow to the back of the grid phenomenon filtration The sealed connection between the plates is a proprietary technology that is not sensitive to gravel or grit filtration. The unique use of flushing rods and rotating brushes to automatically clean the filter plates.
Mechanical Fine Screen Application
It is a high-efficiency fine grille decontamination equipment that combines pollution blocking and decontamination. It is suitable for large, medium and small pump stations as fine grilles to intercept and remove floating objects in the water, such as: weeds, paper, cigarette butts, melon seeds, fibers, hair, etc. This model has a high dirt capture rate , the effective implementation of the subsequent treatment process.