Product Details:

VSRF high-efficiency backwash filters are a new generation of backwash filter systems designed and developed independently by Vithy. Multiple wedge filter elements are integrated. In case of blockage, the filter elements can be backwashed group by group with the unique backwash arm. Filter elements are cleaned automatically by means of differential pressure control and timing control. When the differential pressure of the outlet increases to the set value due to accumulation of impurities on the filter element surfaces, or the timer reaches the preset time, the electric control box sends the signal to drive the backwash mechanism. When the backwash sucker port is aligned with the filter element inlet, the drain valve is opened, and water is drained to relieve pressure. A negative pressure zone with the relative pressure lower than the water pressure outside the filter elements appears on the inner sides of the sucker and filter elements, part of circulating clean water is forced to flow into the filter elements from outside the filter elements, and impurities on the inner walls of filter elements are reversely backwashed into the tray and discharged through the drain valve. With the special screen, injection effects can be produced in filter elements, and all impurities can be flushed away from the smooth inner walls. When the differential pressure of the inlet and outlet of the filter is normal or the set time of the timer ends, the motor stops running, and the electric drain valve is closed. In the whole process, the material flows continuously, a little water is needed for backwashing, and continuous and automatic production (controlled by PLC or DCS) is realized.

VSRF high-efficiency backwash filters have significant advantages different from ordinary mesh type self-cleaning filters. The solid and durable wedge mesh type filter elements are applied, the surface gas are uniform, and the filtering area of each filter is large. Fine filtration of low-speed liquid on the surface can be realized. The maximum flow of each filter can reach 8,000m³/h. Such filters have high reliability and can be used for filtration of poor water containing sludge impurities, soft sticky impurities, a large number of impurities or a small number of hair and fiber impurities.

VSRF series automatic backwash filters can be used for filtering solid particle impurities in all kinds of water and low-viscosity liquid to meet the system operation and pipeline technology requirements for liquid cleanliness. They can also be used for protecting downstream key parts from blockage, wear or scaling caused by particles, to improve the operation efficiency and prolong the service life of key parts. Automatic online continuous filtration can be realized to reduce the downtime, maintenance and labor costs. VSRF filters are advanced solutions for filtration of water and water-based liquid.

Applicable Industry and Fluid 

■ Applicable industry: water treatment, paper making, iron and steel making, mining, petrochemical, machining, municipal utilities, agricultural irrigation, etc.

■ Applicable liquid: groundwater, seawater, lake water, reservoir water, circulating cooling water, chilled water, high/low-pressure water spray, point injection water, heat exchange water, sealing water, bearing cooling water, oil well injection wall, process circulating water, machining coolant, cleaning agent, cleaning water, etc.

■ Main filtration effects: removal of large particles, water purification and protection of key parts.

■ Filtration type: backwash filtration and automatic continuous online filtration.

Technical Characteristics and Advantages 

■ Automatic continuous online filtration and continuous flow in backwashing, reducing the downtime and maintenance costs.

■ Large filtering area, low surface flow, small pressure loss and energy consumption, fine filtration, low backwash frequency and conservation of backwash water.

■ High-performance filter elements, accurate filter gaps, high-efficiency backwash, high-strength structure and long service life (more than 10 years).

■ Pulse backwash with high strength, good effects, short duration and low water consumption. The drain valve is opened when filter elements are aligned.

■ Water is filled into both ends of filter elements at the same time, increasing the flow. Free water flow can help to reduce surface blockage and avoid blockage of one end of the filter element.

■ The structure is compact. Large-flow filtration can be realized with one filter. The installation space and construction costs can be saved significantly.

■ High degree of integration, no need for a large number of automatic valves, connectors or seals, high reliability and low costs of operation and maintenance.

■ The automatic control system has high reliability, and the interface is intuitive and easy to operate. The filters can be controlled to work efficiently according to the actual conditions.

Main Technical Parameters