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Several categories of filter types?

2022-08-26 Page view : 339 views

The principle and difference between internal pressure and external pressure ultrafiltration membrane

1. PP filter element

PP filter element is also called PP melt-blown filter element. The melt-blown filter element is made of polypropylene ultrafine fibers by thermal fusion entanglement. The fibers randomly form a three-dimensional microporous structure in space. , fine and fine filtration in one, can intercept impurities of different particle sizes. The filter element has a precision range of 0.5-100μm, and its flux is more than 1.5 times that of the same precision peak room filter element. Different types of end cap joints can be configured to meet the needs of various engineering installations.

2. Wire wound filter element

It is refined by precision winding of textile fiber yarn with good filtering performance on a porous skeleton. Its yarn materials include polypropylene fiber, acrylic fiber, absorbent cotton fiber, etc. By controlling the winding tightness and thinness of the yarn during winding, water purifier filter elements of different precision can be made, which can effectively remove suspended solids, particulate impurities, etc. of various liquids, and have a high purification effect on various liquids . pleated filter element

3. Folded microporous filter element

The folded microporous filter element is a precision filter device made of polypropylene (Polypropylene) thermal spray fiber membrane, nylon (Nylonb) polytetrafluoroethylene (PTEE) microporous filter membrane and other filter media. It has small volume and large filter area. The advantages of high precision. The filtration precision can range from 0.1μm to 60μm. The sealing of the filter element end cap and the connection of the overall structure are all hot-melt bonding. There are three types of filter element joints: 222 joints, 226 joints, and flat mouths. The products have undergone strict and complete testing before leaving the factory to ensure the stable performance of the products.

4. Activated carbon filter

There are two types of activated carbon filter products: compressed activated carbon filter and bulk activated carbon filter.

1. Compressed activated carbon filter element adopts coal-based activated carbon with high adsorption value and coconut shell activated carbon as filter material, and is sintered and compressed with food-grade binder. The inside and outside of the compressed activated carbon filter element is wrapped with a layer of non-woven fabric with filtering effect, to ensure that the carbon core itself will not drop carbon powder. Both ends of the carbon core are equipped with soft nitrile rubber gaskets, so that the carbon core can be loaded into the filter cartridge. Has good sealing.

2. Bulk type activated carbon filter packs the required activated carbon particles into a special plastic shell, and welds the end caps on both ends of the shell with welding equipment. Filter to ensure that the carbon core will not drop carbon powder and black water during use. According to the needs of customers, the shell end cover can be made into different types of connection ports. Interface methods are: flat pressure type, pipeline type (models: 4042, 4044, 4046, etc.).

Five, double filter element

Previous section: The accuracy of polypropylene meltblown filter element is 5μm

Next section: granular activated carbon filter with built-in activated carbon 170g

Material: ABS, PP

Length: 250mm Outer Diameter: 70mm Flux: 8L/S Total Flux: 6-8T

Activated carbon index: strength>90; iodine value (mg/g)>950; methylene blue value (mg/g)>120

6. Ceramic filter element

Since the ceramic filter element is made of pure natural physical materials, there will be no secondary pollution during the use of the water purifier. It retains the beneficial minerals in the water, effectively removes mud, sand, bacteria, rust, never clogging, long service life, excellent filtration effect, etc. At the same time, it is not afraid of clogging and can adapt to very poor water quality. At present, the ceramic filter element with the highest filtration precision in the world is the dual-control membrane ceramic filter element with an average pore size of 0.1 μm. The water filtered by the filter element can be drunk without boiling, which fully meets the national standard for direct drinking water.

7. Resin filter element

Resin is a porous, insoluble exchange material. The resin filter element in the water softener contains millions of tiny plastic balls (beads), all of which contain many negative charge exchange sites that absorb positive ions. When the resin is in the nascent state, these charge exchange sites are occupied by positively charged sodium ions. As calcium and magnesium pass through the resin reservoir, they come into contact with the resin beads, displacing sodium ions from exchange sites. The resin preferentially binds strongly charged cations, with calcium and magnesium ions having a stronger charge than sodium ions. Displacement of the sodium cations then passes down the resin “bed” and out of the water softener, so that the water softener sends out “soft” water. Eventually, all resin exchange sites are occupied by calcium and magnesium and can no longer work.

Eight, titanium rod filter

The titanium rod filter element has excellent properties such as corrosion resistance, high temperature resistance, high strength, easy guarantee of filtration accuracy, and easy regeneration. It 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 and can be machined by cutting, welding, etc. It has high compressive strength and internal pressure failure strength of up to 2MPa or more; its filtration accuracy is easy to ensure, and even if it works under high temperature and high pressure, the aperture will not be deformed. The porosity can reach 35-45%, the pore size distribution is uniform, the dirt holding capacity is large, and the regeneration method is simple, and can be reused after regeneration.

Nine, RO reverse osmosis filter

The filter element with RO reverse osmosis membrane. Reverse osmosis technology: The original text of reverse osmosis is REVERSE OSMOSIS. It is a collection of scientists from NASA from many countries. With the support of the government, it has spent billions of dollars and has been researched for many years. The principle of reverse osmosis is to apply a pressure greater than the natural osmotic pressure on the raw water side, so that the water molecules reverse osmosis from the side with higher concentration to the side with lower concentration. Since the pore size of the reverse osmosis membrane is much smaller than hundreds of times or even thousands of times that of the virus and bacteria, various viruses, bacteria, heavy metals, solid solubles, polluted organics, calcium and magnesium ions cannot pass through the reverse osmosis membrane at all. , so as to achieve the purpose of water softening and purification.

10. Stainless steel filter element

Features of stainless steel filter element:

1 Good filtration performance and uniform surface filtration performance for 2-200um filtration particle size

2. Good corrosion resistance, heat resistance, pressure resistance and wear resistance;

3. The stainless steel filter element has uniform and precise filtration precision;

4. The flow rate per unit area of ​​the stainless steel filter element is large;

5. The stainless steel filter element is suitable for low temperature and high temperature environment; after cleaning, it can be used again without replacement.

Application: Petrochemical, oilfield pipeline filtration; Fuel oil filtration of refueling equipment, construction machinery equipment; Equipment filtration in water treatment industry; 7 Pharmaceutical and food processing fields; Rated flow 80-200l/min Working pressure 1.5-2.5pa Filtration area (m2) 0.01 -0.20 Filtration accuracy (μm) 2-200 μm Filter material Stainless steel woven mesh Stainless steel perforated mesh is used for pre-water removal of heavy oil combustion system, and can also be used for chemical liquid filtration. The precision is 100um. The filter element is made of stainless steel circular microporous mesh. It is suitable for pre-processing and post-processing systems in electronic, petroleum, chemical, pharmaceutical, food and other industrial sectors. Further purification of water with low suspended impurities (less than 2~5mg/L).

Eleven, oil filter element

A variety of filter elements of different specifications and materials, with a precision from 0.5 to 80 m, meet the needs of different industrial and mining industries and various oil products.

12. Hydraulic oil filter

The hydraulic oil filter element is mainly used to filter oil in the hydraulic system, to remove the particulate debris and rubber impurities in the hydraulic system, to ensure the cleanliness of the hydraulic oil, so that the hydraulic system can operate normally.