What Is a Filter?
In our daily life, we often hear the word “filter”, so do you know what the filter actually is. Here is an answer for you.
Filter is an indispensable device for conveying media pipelines, usually installed in pressure relief valve, water level valve, square filter and other equipment at the inlet end of the equipment. The filter is composed of cylinder body, stainless steel filter mesh, sewage part, transmission device and electrical control part. After the water to be treated passes through the filter cartridge of the filter mesh, its impurities are blocked. When cleaning is required, as long as the detachable filter cartridge is taken out and reloaded after treatment, it is therefore extremely convenient to use and maintain.
What Are the Advantages and Disadvantages of Sintered Stainless Steel Filter and Bronze Filter?
As is known to all, different materials have their own advantages and disadvantages. In this part, for your convenience, we list the pros and cons of sintered stainless steel filter and bronze filter respectively
Sintered Stainless Filter
①the characteristics of stable shape, impact resistance and alternating load capacity is better than other metal filter materials;
②air permeability, stable separation effect;
③excellent mechanical strength, suitable for high temperature, high pressure and strong corrosive environment;
④especially suitable for high temperature gas filtration;
⑤can be customized according to user requirements of various shapes and precision products, can also be equipped with a variety of interfaces through welding;
⑥good filtration performance, for 2-200um filter particle size can play a uniform surface filtration performance;
⑦corrosion resistance, heat resistance, pressure resistance, wear resistance;
⑧stainless steel filter element pores uniform, accurate filtration accuracy;
⑨The flow rate per unit area of stainless steel filter element is large;
⑩stainless steel filter element suitable for low temperature, high temperature environment; After cleaning, it can be used again without replacement.
① Higher Cost: the main disadvantage of stainless steel is high cost, the price is more expensive and the average consumer is difficult to consume.
② Weaker alkali resistance: stainless steel is not resistant to corrosion of alkaline media, unsuitable long-term use or maintenance will cause a more serious damage to stainless steel.
Copper powder sintered filter element is made of copper alloy powder sintered at high temperature, with high filtration accuracy, good air permeability, high mechanical strength, and high material utilization. It suitable for high working temperature and thermal shock resistance.
①It can withstand heat pressure and impact well.
②Strong regeneration ability and long service life.
③It can better withstand thermal stress and impact and work in high temperature and corrosive media, supporting welding, bonding and mechanical processing.
④Copper powder sintered filter element penetration stability, high filtration accuracy.
⑤Copper powder sintered filter element, with high strength, good plasticity, oxidation resistance, corrosion resistance, and good assembly, can better withstand thermal stress and impact.
⑥Copper powder sintered filter element is resistant to sudden cold and hot, superior to filters made of paper, copper wire mesh and other fiber cloth, and easy to install and disinstall and clean.
In a humid environment, bronze is extremely easy to oxidize, generating patina, making the copper surface tarnish, and difficult to clean.
The Application of Filter?
Filter has been applied to various aspects. Here we list some below for you.
①Food and Beverage Industry:
Food and beverage wine, spirits and beer removal of suspended solids, sediment; removal and polishing of particles in edible oil; removal of carbon black in cellulose; gelatin, liquid syrup, syrup, corn syrup polishing and interception of carbon ink and filter aid in sugar; starch processing; milk processing and removal of mud in soft drinks, security filtration before filling, various process water, syrup and other raw materials filtering and removal of impurities generated in the blending process.
In food industry, safety is very important. HENGKO stainless steel 316L has passed FDA food grade certification, so sintered stainless steel filter is more recommended in food industry compared to bronze filter.
②Fine Chemical Industry:
Chemical catalyst recovery, filtration of impurities in pipeline systems, polishing process media, filtration of alkaline and acidic liquids as well as solvents, emulsions and dispersions, removal of gels, acrylics and adhesive emulsions from resins. In the fine chemical industry, activated carbon or catalyst removal is a typical example of an application requiring high standards in chemical processing.
Stainless steel acid and alkali resistance is comparatively better, in the acidic solution with oxidant, stainless steel acid resistance is good, in the absence of oxidant, the difference between the two is not big, if you use in the case of non-oxidation, both are suitable, you can choose according to the demand.
③Resin, Plastic and Ink Industry:
Resin, plastic, ink and coating oil and polymer filtration, dispersion, polymerization compound, can coating resin, plastic ingredients, printing ink, plastic processing, paper coating, high purity inkjet liquid filtration, removal of fiber in the coating, gel, filter solvent, filter grinding fineness substandard particles, removal of particle impurities after mixing reaction, removal of the condensation of adhesive paint, oil removal in the paint.
In this industry, bronze and stainless steel filter are both suitable, so you can choose according to your demand.
Sterilization and filtration of sterile apis, vaccines, biological products, blood products, infusion, buffer, reagent water, ophthalmic preparations, lyophilized powder injection; pharmaceutical precious active ingredient recovery, catalyst regeneration, activated carbon purification and removal, gelatin filtration, hormone, vitamin extract, pharmaceutical preparation polishing, plasma protein removal, salt solution filtration.
In the pharmaceutical industry, various pharmaceutical solutions may react with copper, contaminating the sample, so an FDA food grade certified stainless steel 316L filter is recommended.
⑤Electronic Process Industry:
Electronics wafer and chip processing for cost efficiency, electronic etching acid bath, photochemical polishing, high purity water filtration and pre-filtration of various membrane filtration processes; filtration of cooling water, removal of zinc deposits in zinc solution, removal of impurities in copper foil electrolysis stable tank.
The particularity of electronic components makes them inseparable from chemicals, in which case copper may react, so stainless steel filters are recommended.
⑥Metal Processing Industry:
Hydraulic oil filtration, precious metal (aluminum, silver, platinum) removal of mud and spray paint, paint filtration, metal processing hydraulic oil filtration, pretreatment system filtration, precious metal recovery, metal processing fluid and drawing lubricant. Component cleaning units use filter bags to reduce residual dirt on components.
Stainless steel is hard and strong, and it is more durable and has a longer service life than copper.
⑦Water Treatment Industry:
Water treatment well water filtration, water treatment plant, sludge removal, pipeline descaling or calcification, filtration of raw water, filtration of wastewater chemicals, ultrafiltration membrane, RO membrane pre-protection, blocking flocculent, colloid, membrane purification liquid pre-filtration, blocking ion exchange resin, seawater sand removal and algae removal, ion exchange resin recovery, calcium deposition removal, water treatment chemicals filtration, cold water tower device dust removal.
In this industry, filter is used in the environment with water for a long time. If the copper filter is selected, it may be easy to rust and grow patina, so the stainless steel filter may be more suitable
⑧Automobile Manufacturing Industry:
Electrophoretic paint filtration, ultrafiltration protection filtration, spray water filtration, varnish and finish paint filtration, automotive pretreatment, finish paint, varnish, primer, paint loop filtration, parts cleaning fluid, drawing lubricants, lubricants, metal working fluid and pump suction filter filtration.
The spray head of the water gun is equipped with a filter, which is working under long-term exposure to chemical cleaners. Under this environment, stainless steel filter is more suitable.
Recommendations of Good Filter
Maybe you are confused about how to choose a good filter. Here we recommend some for you, hope it can be helpful for your application.
①Sintered micron stainless steel porous metal filter cylinder for gas filtration
HENGKO stainless steel filter elements are made by sintering 316L powder material or multilayer stainless steel wire mesh at high temperatures. They have been widely used in environmental protection, petroleum, natural gas, chemical, environmental detection, instrumentation, pharmaceutical equipment and other fields.
HENGKO nano micron pore sized grade mini stainless steel sintered filter elements have excellent performances of smooth and flat internal and external tube wall, uniform pores and high strength. The dimensional tolerance of most models is controlled within 0.05 mm.
②Porous Metal Powder Sintered Stainless Steel Catalyst Recovery Filters for Catalyst Recovery Process
Micron porous metal filtration system is used in petroleum and chemical production processes for all liquid-solid and gas-solid high-efficiency separation, the core of which is the metal powder sintered microporous metal filter element, typically made of 316L stainless steel powder, Hastelloy, titanium, etc. This porous metal filter can adapt to the higher process temperature and pressure of refineries and chemical plants, and ensure the filtration effect while achieving the minimum pressure drop and maximum backwashing Recovery rate.
Micron porous metal filtration system in petrochemical production has the characteristics of high-temperature resistance, high-pressure drop, high solid content operation; liquid (gas) and solid high-efficiency separation; system internal backwashing to remove solids; continuous automatic operation; also can avoid frequent replacement and disposal of waste filter material to the environment pollution.
In conclusion, filter is very important for the production of various industries. There are filters with different materials such as sintered stainless steel and bronze. You should consider the material and application environment when choosing a filter.