MF series oil suction filter hydraulic system filter

The MF series oil suction filter is a high load pre protection device designed specifically for medium and high pressure hydraulic systems. It adopts a side mounted oil tank external docking structure, which does not require a large installation hole at the top of the oil tank. The entire filter is directly fixed to the oil suction port position on the side wall of the oil tank through a flange interface. The filter chamber is partially embedded inside the oil tank, and the oil flows directly into the filter chamber from the inside of the oil tank for purification before being connected to the hydraulic pump suction pipeline. Without occupying the maintenance space at the top of the oil tank, it provides stable pre pollution protection for medium and high pressure high flow hydraulic pumps and is suitable for use in various high flow hydraulic systems with limited top space and side mounted oil suction layout.

The MF series oil suction filter uses multi-layer stacked stainless steel sintered mesh as the core filter element, combined with an external high-strength support cage, which will not cause deformation or damage to the filter screen under high flow impact. It can efficiently intercept hard solid impurities of different particle sizes under extremely low initial pressure difference; An anti suction overflow valve is integrated inside the chamber, with an opening pressure set at 0.018MPa. When the filter element is blocked and a negative pressure difference is formed on the suction side, the overflow valve can directly replenish oil from the tank side, completely avoiding suction and cavitation damage to the hydraulic pump; Equipped with an external vacuum negative pressure gauge, operation and maintenance personnel can directly read the negative pressure value on the suction side from the outside of the fuel tank, accurately determine the degree of filter blockage, and grasp the real-time status of the filter without disassembling the equipment; The overall filter adopts a cast iron shell for rust prevention and passivation treatment, and the side mounted flange comes with an integrated sealing structure. After installation, it completely isolates the contact between the air inside and outside the oil tank and the oil, avoiding external pollutants from entering the oil tank through installation gaps.

The MF series oil suction filter is widely suitable for pre purification scenarios at the oil suction end of various high flow medium and high pressure hydraulic systems. It can be used in hydraulic stations of metallurgical rolling equipment, hydraulic systems of large mining machinery, hydraulic power units of port lifting equipment, auxiliary hydraulic circuits of shield machines, main hydraulic systems of large construction machinery, wind power variable pitch hydraulic stations and other working conditions. It is particularly suitable for side mounted oil suction layout scenarios with high flow continuous operation and extremely limited installation space at the top of the oil tank. It can effectively prevent large-sized hard particles from entering the interior of high flow medium and high pressure hydraulic pumps, greatly improving the operating life and long-term stability of core pump components.

Compared to the WU series universal oil suction filter, the MF series oil suction filter adopts a side mounted semi embedded layout, which does not require occupying the space of the top cover plate of the fuel tank. It can be directly installed at the original side mounted oil suction port position without the need to modify the top structure of the fuel tank; The impact resistance of stainless steel sintered mesh filter is more than three times that of ordinary woven mesh, which can withstand the instantaneous flow impact of high flow hydraulic systems and is less likely to cause filter damage during long-term use; External negative pressure direct reading design allows operation and maintenance personnel to intuitively read filter blockage data from the outside of the equipment without opening the fuel tank cover, greatly reducing the difficulty of daily inspections; The integrated anti suction overflow structure can ensure sufficient oil supply to the hydraulic pump even under extreme working conditions where the filter element is completely blocked, thus avoiding sudden equipment failures caused by suction in medium and high pressure high flow pumps from the root.

The negative pressure gauge shows a consistently high value. First, check if the system has been operating at an over rated flow rate for a long time. If the flow rate is stable, it indicates that the filter element has been completely blocked by impurities. Remove the sintered mesh filter element and rinse it with a special cleaning agent before reinstalling it for use; Intermittent abnormal noise occurs during the operation of the hydraulic pump. Check whether the anti suction overflow valve is attached with impurities and slightly stuck. After disassembling and cleaning the residual impurities in the valve body, the overflow valve can restore its normal oil replenishment function; There is oil leakage at the side mounted flange position. Check whether the integrated seal of the flange has aged and deformed due to long-term oil immersion. Replace the oil resistant seal of the same specification and tighten the flange bolts evenly in diagonal order to restore the seal; The oil flow rate is significantly lower than the design value. Check whether there is a large amount of adhesive sludge attached to the surface of the sintered mesh filter element. After thoroughly cleaning the sediment sludge in the pores of the filter element with ultrasonic cleaning equipment, the oil flow capacity can be fully restored to its initial state.