Which industry is the hydraulic oil filter mainly used in?

Hydraulic oil is the direct medium of the hydraulic system, all the power and operation control of the hydraulic system are transmitted by the hydraulic oil, the main parts that cause the "deterioration" of the hydraulic oil are the impurities caused by the wear of the hydraulic oil tank hydraulic oil filter element, hydraulic parts (such as: hydraulic pumps, hydraulic motors, various control valves, etc.), etc., which are analyzed as follows

1. The hydraulic oil tank is a place to provide hydraulic oil, heat dissipation and cooling, precipitate impurities and discharge the air of the hydraulic system: first of all, the lack of hydraulic oil will lead to the hollowing out of the hydraulic oil pump, and the first emptying will make the hydraulic oil pump insufficient oil supply, which will directly lead to the wear and tear of the hydraulic oil pump, and soon make the hydraulic oil pump seriously damaged to scrap; Secondly, the air in the hydraulic oil is mixed with air, which leads to the increase of the compression elasticity of the hydraulic oil, so that the volumetric efficiency of the hydraulic oil pump and other working devices is reduced, and the work efficiency of the whole hydraulic system is reduced, and the air in the hydraulic oil is compressed in the work of the oil pump and the working device to form compressed gas, and when it reaches a certain pressure, the formation of air pockets will damage the sealing surface, and will also make the oil pump and the working device wear out quickly. The way to prevent this is to check the hydraulic oil in the hydraulic tank frequently to ensure that the amount of hydraulic oil is within the normal range.

2. The hydraulic oil filter element in the hydraulic oil tank is used for too long time, and the impurities in the hydraulic oil are adsorbed on the surface of the filter element, so that the filter element is blocked, and the oil pump will not absorb enough oil to produce air absorption. Regular replacement of the hydraulic oil filter is the most effective way to prevent it.

3. If the hydraulic oil is used for too long and not replaced, the impurities in the hydraulic oil (iron filings, copper filings, dust, etc.) will accumulate more and more, and the fine-grained size will become smaller and smaller. The impurities in the hydraulic oil are brought to the working devices and control elements through the working cycle, which directly leads to the rapid wear of the hydraulic components of the entire hydraulic system. The way to prevent it is to change the hydraulic oil regularly, or take samples for inspection regularly, and replace them in time if they are found to be exceeded.

Filters are mostly required when lubricating oil is used in large quantities, for long-term use and when it is not easy to replace.

Simply put, it's filtration.

Hydraulic fluids. The main parameters of the filter element: the filtration accuracy is 3 30 m (special accuracy can be customized) filter material:

Glass fiber, metal mesh, etc. (different filter materials are selected according to different accuracy requirements) Normal use working pressure (max): working medium: general hydraulic oil, phosphate ester hydraulic oil, emulsion, mechanical processing analysis water-ethylene glycol.

Working temperature: -30 110 Characteristics of the core of the hydraulic oil filter element: good filtration performance, uniform surface filtration performance for the filter particle size of 2-200um, good corrosion resistance, heat resistance, pressure resistance, and wear resistance; Stainless steel filter element stomata uniform, accurate filtration accuracy; The flow rate of the stainless steel filter element per unit area is large; The stainless steel filter element is suitable for low and high temperature environments.

It can be reused after cleaning without replacement. Structural strength of hydraulic oil filter element: (1) axial.

Stiffness: The filter element should not be deformed or damaged when subjected to the axial load as standard of the industrial process document. (2) Flattening stiffness:

The filter element should be subjected to the ultimate pressure drop of the industrial process documentation standard without deformation and damage. (3) Pressure drop flow characteristics: In the industrial process documents, the pressure drop flow characteristic curve of the filter element should be standard) flow fatigue characteristics

Under standard flow and pressure drop conditions. The number of flow fatigue cycles of the disposable filter element is not less than 10,000 times, and the number of flow fatigue cycles of the repurgeable filter element is not less than 20,000 times.

The hydraulic oil filter element is mainly made of stainless steel braided mesh, sintered mesh, iron woven mesh, as the material, because the filter material it uses is mainly glass fiber filter paper, chemical fiber filter paper, wood pulp filter paper, so it has high concentricity, high pressure, good straightness, its structure is made of single or multi-layer metal mesh and filter material, in the specific use of its number of layers and the number of mesh that constitutes the wire mesh according to different conditions and uses.

It is used to protect specific components in the hydraulic system, and is installed in the upstream of the components to be protected in the medium pressure pipeline to filter out solid particles and colloidal substances in the working medium, effectively control the pollution degree of the working medium, and make the components work normally. The hydraulic oil filter element is mainly made of stainless steel woven mesh, sintered mesh, iron woven mesh, as the material, because the filter material it uses is mainly glass fiber filter paper, chemical fiber filter paper, wood pulp filter paper, so it has high concentricity, high pressure, good straightness, stainless steel material, without any burrs, to ensure the characteristics of long service life, its structure is made of single or multi-layer metal mesh and filter material, in the specific use of its number of layers and the number of mesh that constitutes the wire mesh according to different conditions and uses.

The main parameters are: filter element material, filtration accuracy, nominal pressure, flow rate;

Features: Good filtration performance; Acid, alkali and wear-resistant; Large flow per unit area.

There are three main considerations for the parameters of the hydraulic oil filter element: 1. The filter medium and accuracy required by the customer (commonly 10 microns). 2. Pressure resistance. 3. The size of the starting pressure difference. It is mainly divided into these three points. Special circumstances need to be informed to the manufacturer.

Luthall Filtration is the earliest manufacturer of hydraulic oil filter elements in China, and jointly drafted the national standard hydraulic oil filter index parameters with Liming and Pingyuan. **Synchronization with quality is preferred.

The hydraulic oil filter element is an important part of the hydraulic system, and its main role is to filter impurities and oxides in the hydraulic oil.

Hydraulic oil filters are typically made of aluminum, stainless steel, copper, and iron. The exact material depends on the type and purpose of the filter, but in general, aluminum and stainless steel are commonly used materials because of their high corrosion resistance and strength.

In addition, the inside of the hydraulic oil filter may contain some filter materials such as paper, cotton, and fibers. The choice of these materials also depends on the purpose of the filter element, and their role is to further filter out impurities in the oil.

Overall, the material of the hydraulic oil filter is very important because it directly affects the quality and performance of the filter, which in turn affects the safety and reliability of the hydraulic system. Therefore, when choosing a hydraulic oil filter, you should carefully consider its material to ensure its quality and performance.

What are the hydraulic oil filters made of? The hydraulic oil filter element is mainly composed of filter media, bracket and sealing ring. Filter media can be divided into a variety of materials, commonly used are cellulose, synthetic materials and metal mesh.

Among them, cellulose material has the highest filtration efficiency, but it is easy to get damp and has high friction, which will shorten the life of the filter element; The synthetic material has good water and oil resistance, but low filtration efficiency; The filtration efficiency of metal mesh material is poor, but it has high temperature resistance and strong corrosion resistance. The filter media and brackets are usually made of metal, and the sealing rings are made of rubber or plastic.

Jiajiebao filter hydraulic oil filter element material: stainless steel woven mesh, sintered mesh, iron braided mesh filter material: glass fiber filter paper, chemical fiber filter paper, wood pulp filter paper.

Hydraulic oil filter element features:

It is made of single or multi-layer metal mesh and filter material, the number of layers and the number of mesh that constitutes the wire mesh are determined according to different use conditions and uses, with high concentricity, high pressure, good straightness, stainless steel filter element, without any burrs, to ensure a long service life.

Scope of use of hydraulic oil filter element:

1 Petrochemical is a very large industry with a very wide scope.

2. The filter elements that will be used are: pleated filter element, wirewound filter element, meltblown filter element, PES filter element, PTFE filter element, PVDF filter element, metal filter element, coalescing filter element, large flow filter element, special chemical filter element, air filter element, sterilization filter element, etc.

3 The specific type of filter element needs to contact a professional filtration company to provide parameters for filter element selection.

The accuracy marked on the hydraulic oil filter product certificate or label is the nominal accuracy, not the absolute filtration accuracy, and only the value that has been tested by the experiment can indicate the filtration capacity of the filter element. To test the performance of the imported substitution filter element, it can be concluded from the following indicators:

1. Filtration accuracy:

According to the needs of the hydraulic system, the cleanliness level of the stain is determined, and the filtration accuracy of the oil filter is selected according to the attached table according to this cleanliness level.

The nominal filtration cleanliness of the hydraulic oil filter element commonly used in construction machinery is 10 m

Hydraulic oil cleanliness (ISO4406) Nominal filtration accuracy of filter element m range of application.

13 10 3 Hydraulic Servo Valve.

16 13 5 Hydraulic proportional valve.

18 15 10 General hydraulic components (10MPa).

19 16 20 General hydraulic components (10MPa).

Under the specified experimental conditions, the diameter of the maximum rigid spherical particles that the filter can pass is used as its absolute filtration precision, which is used to directly reflect the initial filtration capacity of the new filter element.

The most important criterion for evaluating the hydraulic oil filter element is the value measured by ISO4527-1981E (multiple pass test), that is, the ratio of the number of particles on both sides of the oil inlet and outlet of the oil mixed with the standard test powder to circulate through the oil filter multiple times.

2.Flow Characteristics:

The flow rate and pressure drop of the filter element through the oil are important parameters of the flow characteristics, according to the ISO3968-91 standard for flow characteristics experiment, in order to draw the flow-pressure drop characteristic curve, under the rated oil supply pressure, the total pressure drop (the sum of the pressure drop of the filter shell and the filter element) should generally be as follows.

3.Filter Element Strength:

The rupture-impact test should be carried out in accordance with the ISO2941-83 standard, and the pressure difference should be greater than the specified value when the filter element is damaged.

4.Flow fatigue characteristics:

The fatigue test of 100,000 cycles should be carried out in accordance with the ISO3724-90 standard.

5.Experiments on the adaptability of hydraulic fluids:

The test of pressure flow bearing capacity should be carried out in accordance with the ISO2943-83 standard.

Wanxin Filtration and Purification Equipment Factory provides:

Performance and use of hydraulic oil filter element: It is used for oil suction filtration, filtering out solid particles and colloidal substances in the working medium, and effectively controlling the pollution degree of the working medium. Installed in the tank and must be installed below the tank level.

The filter material of the filter element is made of stainless steel woven mesh or copper mesh, which can be cleaned and used repeatedly.

Filtration of impurities in oil, etc., is generally used in the automotive industry or in hydraulic machinery.

Filters hydraulic oil to prevent dirt from being drawn into the oil system.

70% of hydraulic system failures are due to oil contamination.

The hydraulic oil filter element is specially used to purify the hydraulic oil, and it is divided into an oil suction filter element installed in the oil suction port of the pump.

The high-pressure filter cartridge is installed at the oil outlet of the pump.

The return filter is installed at the return port of the pump.

The filter element is changed from time to time due to oil contamination.

Generally, once every 3 months and 6 months is better.

The selection of the filter element is related to the cleanliness required by the system, the system accuracy of the proportional valve servo valve is generally 6 7 levels, and the selection of the filter element should also be high-precision, such as the general system, the accuracy is low, and the accuracy of the filter element is also low.