LFZ series medium pressure pipeline filter

The LFZ series medium pressure pipeline filter is a universal pipeline purification device developed specifically for medium pressure fluid transportation and semi industrial hydraulic systems. It adopts a modular straight through pipeline layout and can be directly connected in series in the medium pressure medium transportation pipeline and the middle section of the hydraulic system pressure oil circuit. It can intercept impurities in various fluids such as water-based emulsions, medium low viscosity hydraulic oils, cooling circulation media, etc., avoiding blockages and abnormal wear of downstream medium pressure pump bodies, control valves, heat exchange pipelines and other components caused by hard particles and suspended flocs. It is a basic purification component in medium pressure fluid transportation systems that considers both universality and economy, and is suitable for various medium pressure fluid working conditions with nominal pressures ranging from 1.6MPa to 6.4MPa.

The LFZ series medium pressure pipeline filter adopts an integrated cylinder made of carbon steel or stainless steel material, which has undergone a pressure resistance test of 1.5 times the rated working pressure. It can stably withstand the instantaneous impact caused by the normal operating pressure of the medium pressure system and water hammer. The internal filter element supports a variety of filter materials to choose from, including metal woven mesh, wedge-shaped mesh, chemical fiber meltblown and other different types. The filtration accuracy covers the range of 20 μ m to 100 μ m, and can be flexibly selected according to the impurity characteristics of different fluid media; At the top, a visual impurity observation window is set up to visually observe the accumulation of impurities inside the cylinder without disassembling it. Operations personnel can arrange maintenance schedules as needed to avoid blind disassembly or delayed cleaning; Optional differential pressure monitoring interface, which can be connected to an external differential pressure gauge or sensor to monitor the pressure difference before and after the filter element in real time, accurately determining the clogging status of the filter element; The import and export adopt standard industrial pipeline flange interfaces, which can directly connect to conventional medium pressure fluid pipelines without the need for additional customized transition joints.

The LFZ series medium pressure pipeline filter is widely suitable for pipeline purification scenarios in various medium pressure fluid transportation and semi industrial hydraulic systems. It can be used in medium pressure cooling circulating water systems, water ethylene glycol hydraulic medium transportation circuits, emulsion pump station pressure pipelines, medium pressure process fluid transportation pipelines, cleaning equipment high-pressure water filtration, small hydraulic power station pressure oil circuits, and other working conditions. It is particularly suitable for fluid purification scenarios where the medium type is impure mineral oil, the pressure is in the medium pressure range, and the impurities are mainly suspended solid particles. It can effectively intercept large particle impurities such as rust, sediment, and welding slag in the pipeline, avoiding downstream nozzle, heat exchange pipeline, control valve and other components from clogging and failure.

Compared to conventional high-pressure hydraulic specialized filters, the LFZ series medium pressure pipeline filter has undergone targeted structural optimization for the medium pressure range working conditions. The cylinder structure does not require redundant high-pressure reinforcement design, and the overall weight is lighter and the procurement cost is lower. It fully adapts to the pressure requirements of the medium pressure system, and there is no performance waste; Multiple types of filter materials are available, which can simultaneously adapt to various fluid media such as oil and water-based media. One device can cover the purification needs of multiple different working conditions, making it more versatile; The top visual observation window design allows for intuitive judgment of impurity accumulation inside the cylinder without the need for external monitoring instruments, greatly improving the convenience of daily operation and maintenance, especially suitable for unmanned semi-automatic operation scenarios; The standard flange interface is fully compatible with general medium pressure industrial pipelines, and there is no need to customize non-standard transition connectors during on-site installation, resulting in lower installation and modification costs.

Observing that the accumulation rate of impurities in the window is much faster than expected, first check whether there is a large amount of rust or external impurities invading the upstream pipeline. Add a pre coarse filtration device to the upstream pipeline to significantly reduce the filter load and extend the maintenance cycle; There is a slight leakage at the flange position of the cylinder. Check whether the flange sealing gasket has swollen and deformed due to long-term immersion in the medium. Replace the corrosion-resistant sealing gasket that is suitable for the corresponding medium and tighten the bolts diagonally and evenly according to the specified torque to restore the seal; The service life of the filter element is significantly short. Check whether the currently selected filter material type does not match the impurity characteristics of the fluid medium. After replacing the corresponding precision and material of the compatible filter element, the pollutant holding capacity and service life can be restored to the design standards; There is no significant change in the pressure difference between the inlet and outlet. Check if the filter element is not fully installed and if there is a medium bypass situation. After stopping the machine to release pressure, reposition and lock the filter element correctly to restore normal filtering pressure difference.