Wolftechnik filters Germany Wolftechnik models Wolftechnik prices

Wolftechnik filters remove solid contaminants such as iron oxide and dust contained in fuel, preventing fuel system blockages (especially in fuel injectors). They reduce mechanical wear, ensure stable engine operation, and improve reliability. Even if diesel fuel has undergone settling and filtration before being added to the diesel engine tank and is clean, it can still be contaminated during refueling due to unclean refueling tools, refueling environment, and tank openings. Furthermore, during diesel engine operation, impurities deposited in the fuel system and suspended dust in the air can also contaminate the diesel. Therefore, an on-board diesel fuel filter is essential, especially since diesel fuel is not necessarily truly clean before being added to the tank.

Wolftechnik filter features

Installed on the pump suction line, it filters out residual contaminants in the tank and pollutants entering through air vents, serving to protect the pump. However, to avoid cavitation in the pump, pressure loss must be carefully considered; generally, coarse metal mesh or crimped wire materials with 100–206 purposes are used. Therefore, it is not a filter for controlling contamination concentration in control systems. It overcomes many disadvantages of filtration products, such as low dirt-holding capacity, susceptibility to clogging by contaminants, the need to disassemble and clean the filtering section, and the inability to monitor filter status. It features the function of filtering raw water and automatically cleaning and discharging waste from the filter element. During cleaning and discharge, the system supplies water continuously, allowing monitoring of the filter's operating status with a high degree of automation.

Wolftechnik filter functions

The core technology of the high-efficiency automatic gradient density fiber filter with asymmetric fiber filter media structure is the use of asymmetric fiber bundle material as the filter media. One end consists of loose fiber bundles, while the other end has fiber bundles fixed within a solid core of higher specific gravity. During filtration, the heavier solid core compresses the fiber bundles. Meanwhile, due to the small size of the core, the uniformity of the void ratio distribution across the filtration cross-section is not significantly affected, thereby enhancing the dirt-holding capacity of the filter bed. This gives the filter bed advantages such as high porosity typical of fiber filtration, small specific surface area, high filtration speed, large dirt-holding capacity, and high filtration precision. When suspended solids in water pass over the surface of the fiber filter media, the adhesion force between the suspended solids and the fiber bundles, under van der Waals forces and electrostatic effects, is much greater than that with quartz sand, which helps improve filtration speed and precision.

Wolftechnik filter installation requirements

Install at the pump oil suction port: Surface-type oil filters are generally installed on the pump suction line to filter out larger impurity particles and protect the hydraulic pump. The purpose of installing a filter here is to remove contaminants that may invade components such as valves. A safety valve should also be installed to prevent filter clogging. Install on the system return oil line: This installation provides indirect filtration. Generally, a back-pressure valve is installed in parallel with the filter; when the filter clogs to a certain pressure value, the back-pressure valve opens. Install on system branch oil lines. Independent filtration system: Large hydraulic systems can be equipped with a dedicated hydraulic pump and oil filter to form an independent filtration circuit. In addition to the filters required for the entire hydraulic system, a dedicated fine oil filter is often installed individually upstream of important components (such as servo valves and precision throttle valves) to ensure their normal operation.

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