Views: 2 Author: Site Editor Publish Time: 2020-12-17 Origin: Site
Disc filters are quite common in the expected applications. They are widely used in irrigation, wastewater treatment, sewage regeneration, municipal water supply, water plants, because they can work accurately and stably under very demanding conditions and require little maintenance. Large power plants, chemical companies, and emergency filtering and other fields.
The disc filter is pre-designed and can be used in multiple combinations according to the filter unit to alternate the actual needs of different applications. The backwash controller is easy to operate, and can fully control the filter or workstation according to the pressure difference, time or a combination of them. The filter element of the laminated filter does not need to be replaced, and the life span can reach 15 years.
The disc filter is composed of a parallel combination of filter units. The filter unit is mainly composed of a set of diamond-shaped reinforced plastic filter discs with grooves or ribs. The rim formed by the edge intercepts the solids in the water; during backwashing, the water flows from the inside of the filter disc to the outside, flushes the dirt trapped on the filter disc, and discharges it through the sewage outlet.
The discs are tightly compacted and overlapped in the unit, and the middle grooves of the upper and lower discs are inserted into the filter and intercept. It is a kind of self-cleaning filter. It adopts a variety of patented technologies to make installation and use safer, more efficient, water-saving, land-saving, and less routine maintenance. The filter element has no spring design, and the water pressure is best used to compress the disc pack during filtration, so that the pressure requirement for backwashing is greatly reduced. The unique built-in duckbill valve ensures the maximum water output of the filter element during filtration, and at the same time helps to have a good check function during backwashing. The split assembly type filter element frame can flexibly adjust the height of the filter element according to the design requirements to achieve the effect of adjusting the filter area and meet the requirements of different system matching. Abandoning the commonly used metal clamp design, the filter unit adopts a self-locking buckle with a specially designed sealing ring, the installation and disassembly of the filter unit housing is simple and easy, and the sealing effect is good.
Each filter unit has a filter and backwash status indicator device and an automatic exhaust device, which can improve the backwash effect of the filter element while avoiding water hammer damage. When the raw water passes through the filter unit, it flows from the outside to the inside, and the larger dispersion will be intercepted outside. The core component of the Easttai disc filter is the stacked plastic filter discs. There are special grooves or edges on the filter discs. The grooves or edges on the adjacent filter plates form a channel of a certain size, which is larger than the channel. This product can replace traditional mechanical filtration devices such as sand filters within a certain range, and has 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 overlap to form an interception surface. The curved ribs are mainly inserted to intercept and store suspended matter. The slightly larger outer opening design 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 limited; the sharp edge determines the filtration accuracy and constitutes the water channel. 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 begins to filter and intercept. The size smaller than the size of the annular prism can enter the curved edge communicating with the interior along the annular prism, and the large impurities are intercepted.
The unique structure of the filter disc still makes the backwashing process of flushing out the dirt simpler and easier, without the need for complicated motors and drivers, and a simple water flow can penetrate and flush the dirt out of the filter element. This excellent performance reduces the backwashing time of the filter; at the same time, because dirt exists between the filter disc group and the housing, more can be stored inside the filter disc group, so the filter can hold more dirt.