The disc filter is a device that is composed of a filter unit and is used in a filter system.
The disc filter is composed of a parallel combination of filter units, and the filter unit is mainly composed of a group of ring-shaped reinforced plastic filter discs with grooves or ribs. Sewage enters from the outside during filtration, and the rim formed by the edge of the groove on the adjacent filter disc intercepts the solids in the water; when backwashing, the water flows from the inside of the annular filter disc to the outside, which will trap the dirt on the filter disc Rinse down and discharge through the sewage outlet.
The discs are stacked tightly and compactly in the unit, and the middle grooves of the upper and lower discs play the role of filtering and interception. When the raw water passes through the filter unit, it flows from the outside to the inside, and the impurities larger than the groove will be intercepted outside. The core component of the disc filter is the stacked plastic filter discs. There are special grooves or ribs on the filter discs. The grooves or ribs on the adjacent filter discs form channels of a certain size, and the particle size is larger than the channel size. The suspended matter is intercepted to achieve the filtering effect. This product can to a large extent replace traditional mechanical filtration devices such as sand filters, with superior performance and much lower water and electricity consumption than other products.
The disc filter is designed with ribs of different structures on both sides of the filter disc. These ribs are superimposed to form an interception surface. Among them, the curved ribs mainly serve to intercept and store the suspended matter. The slightly larger open design on the outside can ensure backwashing. There is no need to loosen the filter disc, and a thorough backwashing effect can be achieved even when the water pressure is low; the annular edge determines the filtration accuracy and constitutes the water channel, and the filter disc can provide a filtration accuracy of up to 5μ. When the raw water enters the middle of the two-layer filter disc, it first flows along the curved edge into the disc, but it cannot enter directly after careful observation. At this time, it is the annular edge that plays the role of filtering and interception. The impurities smaller than the size of the annular groove can enter the curved edge that communicates with the inside along the annular edge, and the large impurities are intercepted.
