Depth analysis of ZU-H, QU-H series pressure pipeline filter and DF series superimposed filter

In modern industrial production, hydraulic system as the core power transmission device, its stability and reliability directly affect the operating efficiency and service life of equipment. However, contaminants such as mechanical impurities, colloids, asphaltenes and oxidation products mixed with hydraulic oil often lead to failures such as spool jam, choke hole blockage, component wear deterioration, and even systematic shutdown. In order to solve the pain point of this industry, Henan Xinxiang Lifeierte Filter Co., Ltd. with years of technical accumulation, launched ZU-H, QU-H series pressure pipeline filter and DF series superimposed filter, precision filtration technology for the hydraulic system to build an efficient protective barrier, help enterprises to achieve long-term stable operation of equipment. 

1. ZU-H, QU-H series pressure pipeline filter: the "purification guard" of hydraulic system This series filter is designed for hydraulic system pressure pipeline, using multi-layer composite filtration technology, can efficiently intercept metal particles, dust, colloids and chemical metamorphic products in the oil. Its core filter adopts a high-precision folding structure (filtration accuracy of 0.1μm ~ 100μm), with stainless steel (SUS304/SUS316L) filter shell, to ensure stable operation under high pressure environment (working pressure 1.6MPa). The uniquely designed differential pressure signaling device automatically triggers an alarm signal when the filter element is blocked until the pressure difference between the oil inlet and the oil outlet reaches 0.35MPa, prompting the replacement of the filter element, avoiding system failure due to filter failure and realizing preventive maintenance. 

2. DF series superimposed filter: Efficiency revolution of modular design For the multi-layer filtration needs of complex hydraulic systems, DF series adopts superimposed structural design and realizes multi-stage filtration through modular combination. Users can flexibly configure different precision filter elements (such as titanium rod filter, ceramic filter) according to the degree of oil pollution, forming a "coarse filter - fine filter" step filtration system. This design not only saves installation space, but also reduces the load of single filter element through step by step filtration, prolongs the overall replacement cycle, and reduces maintenance costs. In addition, the convenient installation method of the snap-in 226 interface and the plug-in 222 filter element greatly reduces the downtime of the equipment. 

Technology breakthrough: intelligent monitoring and long-term stability 

1. Intelligent monitoring of pressure difference, predictive maintenance ZU-H, QU-H series built-in pressure difference sensor, real-time monitoring of filter pollution status. When the oil passes through the filter, the sensor dynamically analyzes the pressure difference between the inlet and outlet, and is linked with the control system through the electrical signal to realize the visualization of the filter life. This technology breaks through the traditional "regular replacement" mode and turns to "on-demand maintenance" to avoid the risk caused by premature replacement waste or delayed replacement. 

2. Material corrosion resistance, adapt to extreme conditions filter shell is made of electrolytic polished stainless steel, surface roughness Ra≤0.4μm, not only improve fluid permeability, but also enhance corrosion resistance, suitable for chemical, Marine engineering and other harsh environments. The filter element seal is made of fluorine rubber O-ring, which can withstand the temperature range of -20℃ ~ 120℃ to ensure stable sealing under extreme working conditions and prevent potential leakage. 

3. Customized solutions to meet the needs of multiple industries Liefert filters provide customized design services, which can adjust the filter structure (such as the number of folded layers, the porosity of the filter material) and the filter interface size according to the flow rate, pressure and pollutant type of the customer's hydraulic system. For example, in the high temperature hydraulic system in the metallurgical industry, high temperature resistant ceramic filter element can be selected; In medical equipment, sterile grade stainless steel filter is used to meet the requirements of GMP certification. 

Application:

1.Metallurgical industry: It's a reliable choice of high temperature and high pressure environment.In the steel rolling hydraulic system, ZU-H series filters effectively block the metal debris brought by the rolling mill coolant, ensure the precision control of the servo valve, and reduce the failure shutdown rate by 30%. Its high temperature resistance (design temperature 100℃) ADAPTS to high temperature hydraulic oil environment and prolongs the service life of equipment. 

2. Wind power equipment: long-term operation in extreme climate wind power gearbox hydraulic lubrication system adopts QU-H filter, through high precision filtration (0.5μm) to remove dust and lubricating oil oxidation products, with differential pressure alarm system, to achieve unattended wind farm preventive maintenance, reducing operation and maintenance costs of more than 20%. 

3. Precision manufacturing: micron filter to ensure quality In the hydraulic system of the automotive manufacturing press, DF superimposed filter through the three-stage filtration (10μm+3μm+1μm) combination, thoroughly remove oil impurities, to ensure the positioning accuracy of the hydraulic actuator ±0.01mm, improve product yield. Fourth, value extension: beyond filtering, build system security ecology Lifeldt filter not only provides high-performance products, but also creates additional value for customers through the full life cycle service: intelligent monitoring platform: integrated filter life prediction algorithm, upload filter status to the cloud through the Internet of Things module, support remote diagnosis and maintenance reminders. Environmental protection and recycling technology: filter cleaning and recycling services are launched to reduce the frequency of filter replacement and reduce corporate carbon emissions. System optimization consulting: Based on fluid dynamics simulation, we provide customers with filter device layout optimization solutions for hydraulic systems to reduce system energy consumption. Conclusion: 

Precision filtration, driving the industrial future Henan Xinxiang Lifelte Filter Co., Ltd. to "guard every drop of oil purity" as the mission, through technological innovation and customized services, ZU-H, QU-H series pressure pipeline filter and DF series superposition filter to create a hydraulic system "invisible bodyguard". In the era of intelligent manufacturing and Industry 4.0, its products not only ensure the stable operation of equipment, but also promote the transformation of enterprises to efficient and sustainable production modes through intelligent monitoring and environmental protection concepts. In the future, Liffert will continue to deepen filtration technology to provide smarter solutions for global industrial fluid purification.

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