BOLLFILTER filter Germany BOLLFILTER model BOLLFILTER price

BOLLFILTER filters use high-strength wedge-wire screens to automatically clean the filter elements via differential pressure control and timed control. When impurities accumulate on the surface of the filter element, causing the differential pressure between the inlet and outlet to increase to the set value, or when the timer reaches the preset time, the electric control box sends a signal to drive the backwash mechanism. When the backwash suction cup opening is aligned with the filter element inlet, the drain valve opens. At this point, the system depressurizes and drains, creating a negative pressure zone between the suction cup and the inner side of the filter element, where the relative pressure is lower than the water pressure on the outer side of the filter element. This forces part of the clean circulating water to flow from the outside of the filter element to the inside. Impurity particles adsorbed on the inner wall of the filter element flow into the suction cup with the water and are discharged through the drain valve. The specially designed screen creates a jetting effect inside the filter element, flushing any impurities away from the smooth inner wall. When the differential pressure between the filter inlet and outlet returns to normal or the timer setting ends, the material flows continuously throughout the process. Backwashing consumes little water, achieving continuous, automated production.

BOLLFILTER filters are widely used

Widely used in metallurgy, chemical industry, petroleum, papermaking, pharmaceuticals, food, mining, electric power, and municipal water supply. Mainly applied in the oil filtration industry, including suction filters, return line filters, and pipeline filters. Food-grade filters: dust filters, air filters, HVAC filters. Pharmaceutical filters: liquid medication filters, breathing filters, blood filters, bacterial filters. Applications include industrial wastewater and circulating water filtration, emulsion regeneration, waste oil filtration treatment, continuous casting water systems and blast furnace water systems in the metallurgical industry, and high-pressure water descaling systems for hot rolling. It is an advanced, efficient, and easy-to-operate fully automatic filtration device. The filter consists of a housing, stainless steel screen, drainage section, transmission device, and electrical control components.

BOLLFILTER filter features

Uses 304 and 316L stainless steel wedge-wire screens, offering high strength, high precision, and corrosion resistance, with a maximum filtration precision of 26 microns. The water filter achieves automatic backwashing through its own sensing and response capabilities, handling unstable water quality fluctuations without manual intervention. The water filter operates precisely, allowing flexible adjustment of backwash differential pressure timing and time settings based on different water sources and filtration precisions. During the backwashing process, each (group) of screens undergoes backwashing sequentially; this ensures safe and efficient cleaning of the screens while other screens remain unaffected and continue filtering. The water filter uses a pneumatic drain valve, resulting in short backwash duration and low water consumption, making it environmentally friendly and economical. The water filter has a compact and reasonable structural design, small footprint, and is flexible and convenient to install and move.

BOLLFILTER filter applications

The overall equipment structure is compact and reasonably sized; installation and operation are quick and convenient; High filtration precision, large processing capacity, low cost, and high efficiency; maintenance-free; wide range of applications, generally suitable for coarse, medium, or fine filtration; complete specifications to meet different filtration requirements. Water filters are mainly applied in power plants, factory high and low-pressure boilers, air conditioning, cold storage, and other circulating water systems. High-purity water for microelectronics production, high-purity water for semiconductors and picture tubes, water for integrated circuits such as computer circuit boards, and water for solar cells and dry batteries. It can filter out particles and bacteria larger than 0.2um in liquids and gases. It offers advantages such as high filtration precision, fast filtration speed, low adsorption, no media shedding, resistance to acid and alkali corrosion, and ease of operation. It is now widely used as essential equipment in industries such as pharmaceuticals, chemicals, electronics, beverages, fruit wine, biochemical water treatment, and environmental protection.

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