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Detailed introduction of filter element
A filter element is an element installed in a filtration device for separating substances.Filter element is used to purify original ecological resources and reuse resources, and its uses are divided into many kinds, including metal filter element, activated carbon filter element, air filter element and so on.Filter elements are mainly used in oil filtration, air filtration, water filtration and other filtration industries.Removing a small amount of solid particles in liquid or air can protect the normal work of equipment or the cleanliness of air.When the fluid enters the filter element with a certain specification filter screen, its impurities are blocked, and clean flow flows out through the filter element.
The liquid filter element makes the liquid (including oil, water, etc.) clean the polluted liquid to the state required by production and life, that is, makes the liquid reach a certain cleanliness.
The air filter element makes the polluted air clean to the state required by production and life, that is, makes the air reach a certain cleanliness. 

1.  Industry Standard for Filter Elements
JB- T 7218- 2004 cartridge pressurized liquid filter element
JB- T 5087- 1991 Internal combustion engine oil filter paper filter element
GBT 20080- 2006 hydraulic filter element
HG/T 2352-1992 wire wound filter element for magnetic slurry filtration
HY/T 055-2001 folding cylinder microporous membrane filter element
JB/T 10910-2008 oil-gas separation filter element for general oil injection rotary air compressor
JB/T 7218-1994 cylinder pressure filter element
JB/T 9756-2004 internal combustion engine air filter paper filter element

2.Common filter element types
2.1, PP filter element
PP filter element is also called PP meltblown filter element, The melt-blown filter core is made of hot melt entanglement of filter materials made of polypropylene superfine fibers through heating, melting, spraying, traction and receiving molding.The filter core fibers randomly form a three-dimensional micropore structure in space, and the dimensional pore size is distributed in gradient along the filtrate flow direction, integrating surface, deep layer and fine filtration, which can intercept impurities with different particle sizes.The precision range of filter element is 0.5-100 μ m, and its flux is more than 1.5 times that of peak room filter element with the same precision.Different types of end cover joints can be configured to meet the needs of various engineering installations.PP filter element has a deep filtration structure with uniform pore size, sparse outside and dense inside, and has excellent characteristics of high filtration efficiency and acid and alkali resistance.It can effectively remove suspended solids, particles, rust and other impurities in liquid.
· PP Filter Element Features
PP Filter Element is made of polypropylene (PP) hot melt with micron number ranging from 1um to 300um.The filter element has no inner shaft and adopts the design of dense inside and sparse outside, which can not only maintain stable flow rate, pressure difference and service life, but also have excellent deep filtration effect and pollutant accumulation.It is a filter element with high efficiency, low pressure drop, long service life and wide applicability.Because the chemical composition of PP is clean and meets the food hygiene standard, it will not cause secondary pollution to the liquid to be filtered due to the material, and has the characteristics of large flow rate, high precision, corrosion resistance, high pressure resistance, etc.It is widely suitable for PCB, electroplating, pure water, food and drinking water pre-filtration treatment and RO penetration pre-filtration treatment.

· PP filter element size

length5"   10"   20"   30"   40"
internal diameter15mm 20mm 25mm 28mm 30mm 35mm
external diameter35mm-150mm
Special specifications can be customized
· Accuracy and flow
Filtration accuracy (um)1U 5U 10U 20U 50U 100U
Maximum flow (T/H)0.5 0.7 1.0 1.5 2.5 3.5
PPF (polypropylene melt-blown filter element)-10 (length 10" )-5 (filtration accuracy 5 μ m)
PPF-P (polypropylene melt-blown filter element with skeleton)-10 (length 10" )-5 (filtration accuracy 5 μ m)
PPF-D (polypropylene melt-blown filter element)-10 (length 10" )-5 (filtration accuracy 5 μ m)
. Specifications:(special specifications can be customized)
Length 5" 10" 20" 30" 40" 50" 6 0"
outer diameter (± 1mm) 60 ~ 115 mm
inner diameter (± 1mm) 28, 30 mm
product functions and features:
can effectively remove various particulate impurities in the filtered liquid;
multi-layer depth structure, large pollution capacity and long service life;
Large filtration flow and small pressure difference;
Contains no chemical adhesives and is more hygienic and safe;
Resistant to acids, alkalis, organic solutions, oils and good chemical stability;
Low cost and easy replacement. 
integrates surface, deep layer, coarse and fine filtration; It has the characteristics of large flow rate, corrosion resistance, high pressure resistance and low cost.It is used to block rust, silt, eggs and other large granular substances in water.
Parameter description:
length 5 inches, 10 inches, 20 inches, 30 inches, 40 inches
outer diameter 60-65mm
inner diameter 28-30mm
precision 0.1-100um
flow (0.1 MPa) 1-2t/h
withstand voltage 0.4 MPa
maximum applicable Temperature 60 ℃
Drinking water and food industry, Water treatment related systems
R.O.and general water treatment systems
filtration of acid-base liquids in chemical processes
chemical raw materials, Filtered water-soluble paint with organic solvent, Filtration system for oils and coatings
Electrocoating ( ED), oils for chemical liquid filtration machinery, Filtration of cutting oil, heavy oil and fuel oil
edible oil and vegetable oil
syrup, chocolate and other slurries
imaging liquid medicine and ink filtration of PCB liquid medicine
sterile water and ultrapure water before filtration treatment
industrial water, electroplating solution filtration and industrial pure water filtration front system.
Filtering accuracy:1 μ m, 5 μ m, 10 μ m, 20 μ m, 30 μ m, 50 μ m, 100 μ m.
Element length:10, 20, 30, 40 inches.
Filter connection:For example, one type of flat pressure type and three types of plug-in type:215, 222 and 226.
2.2. Wire-wound filter element
is made of textile fiber yarn with good filtering performance, which is precisely wound on porous skeleton.Its yarn materials are polypropylene fiber, acrylic fiber, absorbent cotton fiber and so on.By controlling the winding tightness and dilute density of yarn, filter elements with different precision can be made, which can effectively remove suspended solids and particle impurities of various liquids and have high purification effect on various liquids.
2.3. Folding microporous filter element
Folding microporous filter element is a precision filter made of polypropylene thermal spraying fiber membrane and nylon (Nylonb) polytetrafluoroethylene (PTEE) microporous filter membrane, which has the advantages of small volume, large filtration area and high precision.The filtering accuracy can range from 0.1 μ m to 60 μ m.The sealing of the filter element end cover and the connection of the whole structure are all bonded by hot melt.The filter element joints are of three types commonly used in the world:222 joints, 226 joints and flat mouths.The products have been strictly tested before leaving the factory to ensure the stable performance of the products.
2.4, activated carbon filter element
There are two categories of activated carbon filter elements:
compressed activated carbon filter elements and bulk activated carbon filter elements.
A, compressed Activated carbon filter element uses coal activated carbon and coconut shell activated carbon with high adsorption value as filter materials, and is sintered and compressed with food-grade adhesive.The inside and outside of the compressed activated carbon filter element are respectively wrapped with a layer of non-woven fabric with filtering function to ensure that the carbon core itself will not drop carbon powder, and the two ends of the carbon core are equipped with soft butadiene rubber gaskets, so that the carbon core has good sealing performance when loaded into the filter cartridge.
b.Bulk activated carbon filter element puts the required activated carbon particles into a special plastic shell, welds the end covers on both ends of the shell with welding equipment, and puts non-woven fabric filters for filtering at both ends of the shell to ensure that carbon powder and black water will not fall off when the carbon core is used.According to the customer's needs, the shell end cover can be made into different types of connection ports.The interface modes are:flat pressure type and pipeline type (models are:4042, 4044, 4046, etc.).
2.5, double filter element
upper section:polypropylene melt-blown filter element accuracy 5 μ m
lower section:granular activated carbon filter element built-in activated carbon 170g
material:ABS, PP
outer diameter:70mm
total flux:6-8T
activated carbon index:strength 90; Iodine value (mg/g) 950; Methylene blue value (mg/g) 120
2.6, resin filter element
resin is a porous and insoluble exchange material.The resin filter element in the water softener contains millions of fine plastic balls (beads), all of which contain many negative charge exchange positions for absorbing positive ions.When the resin is in a new state?These charge exchange sites are occupied by positively charged sodium ions.When calcium and magnesium pass through the resin tank, they come into contact with resin beads to replace sodium ions from exchange positions.The resin preferentially binds cations with strong charges, and the charges of calcium and magnesium ions are stronger than those of sodium ions.The replacement sodium cation then goes down through the resin bed and out of the water softener, which sends out the" soft" water.Finally, all the resin exchange sites are occupied by calcium and magnesium, so it can no longer work.
2.7, titanium rod filter element
Titanium rod filter element has excellent performance such as corrosion resistance, high temperature resistance, high strength, easy guarantee of filtration accuracy and easy regeneration; Titanium filter element is formed by titanium powder and sintered at high temperature, so the surface particles are not easy to fall off; The service temperature in the air can reach 500 ~ 600 ℃; It is suitable for the filtration of various corrosive media, such as hydrochloric acid, sulfuric acid, hydroxide, seawater, aqua regia and chloride solutions such as iron, copper and sodium.It has excellent mechanical properties, can be cut, welding and other machining, high compressive strength, and the maximum internal pressure failure strength is more than 2MPa; Its filtration accuracy is easy to ensure, and even if it works under high temperature and high pressure, the pore diameter will not be deformed.Its porosity can reach 35 ~ 45, its pore size distribution is uniform, its pollution capacity is large, its regeneration method is simple, and it can be reused after regeneration.
2.8, RO reverse osmosis filter element
A filter element using RO reverse osmosis membrane.Reverse osmosis technology:The original reverse osmosis is REVERSE OSMOSIS, which was developed by NASA, which gathered scientists from many countries and spent billions of dollars after years of research with the support of the government.The principle of reverse osmosis is to apply a greater pressure than the natural osmosis pressure on the raw water side, so that water molecules can reverse osmose from the side with high concentration to the side with low concentration.Because the pore size of reverse osmosis membrane is far smaller than hundreds or even thousands of times that of virus and bacteria, various viruses, bacteria, heavy metals, solid soluble substances, polluted organic matter, calcium and magnesium ions, etc.cannot pass through reverse osmosis membrane at all, thus achieving the purpose of softening and purifying water quality.
2.9, stainless steel filter element:(stainless steel woven mesh, stainless steel punched mesh)
Stainless steel filter element features:
1) Good filtration performance, which can play a uniform surface filtration performance for 2-200um filtration particle size
2) Good corrosion resistance, heat resistance, pressure resistance and wear resistance;
3) Stainless steel filter element with uniform porosity and accurate filtration accuracy;
4) The flow rate per unit area of stainless steel filter element is large;
5) Stainless steel filter element is suitable for low temperature and high temperature environment; After cleaning, it can be reused without replacement.
Application field of stainless steel filter element:
The pharmaceutical industry:Pre-filtration of various antibiotics and other liquid medicines
food and beverage industry:Filtration of alcohol, mineral water and drinking water
· petroleum industry:Filtration of oilfield water injection
· electronic industry:Pre-filtration of high purity water
Chemical industry:Filtration of various organic solvents, acids and lyes
Technical performance of stainless steel filter element products:
· Filter precision:0.1 um 0.2 um 0.45 um 1um 3um 5um 10um 20um 30um 50um
· Filter element length:5" 10" 20" 30" 40"
· Cartridge Diameter:69mm 83mm 131mm
Inner diameter of filter element:28mm ~ 40mm
Trial pH value:1-12
Maximum working temperature:≤ 80 ℃ 0.1 MPa
Maximum working pressure:0.3 MPa 50 ℃
Maximum back pressure difference:0.2 MPa 25 ℃
Maximum disinfection temperature:120 ℃ every half hour
2.10 Filter element of oil filter
Filter elements of various specifications and materials, with accuracy from 0.5 m to 80 m, can meet the needs of different industries and mines and various oil products.
3. Features of filter element:
Excellent chemical compatibility, suitable for filtering strong acids, alkalis and organic solvents
Filter membrane is folded deep filtration with large filtration area
Low differential pressure, Strong pollution receiving capacity, Long service life
.Wide filtration accuracy can be selected
4. Application field of filter element:
· Pharmaceutical industry:Pre-filtration of various antibiotics and other liquid medicines
food and beverage industry:Filtration of alcohol, mineral water and drinking water
· petroleum industry:Filtration of oilfield water injection
· electronic industry:Pre-filtration of high purity water
Chemical industry:Filtration of various organic solvents, acids and lyes
5. Technical performance of filter element products:
· Filter precision:0.1 mm 0.2 mm 0.45 mm 1um 3um 5um 10um 20um 30um 50um
· filter element length:5" 10" 20" 30" 40"
Filter element diameter:69mm 83mm 131mm
Filter element inner diameter:28mm ~ 40mm
Trial PH value:1-12
Maximum working temperature:≤ 80 ℃ 0.1 MPa
Maximum working pressure:0.3 MPa 50 ℃
Maximum back pressure difference:0.2 MPa 25 ℃
Maximum disinfection temperature:120 ℃ for half an hour
6, filter element service life
With the extension of service time, impurities in water will block the filter element, and the activated carbon filter element will be saturated by adsorption.Therefore, generally speaking, PP filter element needs to be replaced in 3 months, while activated carbon filter element needs to be replaced in 6 months.Because hollow fiber can't be cleaned, it is generally placed at the back end of PP cotton and activated carbon, otherwise it is easy to block, and it needs to be replaced for 1-2 years when it is used as sterilization at the end of water purification equipment.

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