Connection methods between the cylinder and the base: quick-opening type, flange type

Filtration accuracy1μm～100μm

Features: Exquisitely crafted from high-quality stainless steel to remove solid particles, solids and other impurities from the fluid. High pressure resistance and high temperature resistance. It is convenient to replace the filter element and the filtration accuracy is0.1-100umBetween them, it features high filtration accuracy, low filtration resistance, large water flow rate, acid and alkali resistance, etc., and is suitable for the purification of liquids such as water, oil and paint. Strong sewage interception capacity and long service life; The filter element material has a high degree of cleanliness and does not pollute the filter medium. Resistant to acids, alkalis and other chemical solvents; It has high strength, the filter element is not prone to deformation and is easy to clean.      

Working principle and application: The shell is made of stainless steel, which can effectively remove impurities, sediment and suspended solids from water, thereby achieving the purpose of filtration.

Application scope: Widely used in water filtration for drinking pure water, domestic water, electronics, printing and dyeing textile, environmental protection, medicine and other industries, alcohol filtration, pharmaceutical filtration, acid and alkali filtration, reverse osmosis electrodialysis, ultrafiltration and other feed water security filtration.

Overview Editing

Precision filtration devices (also known as security filters) mostly use stainless steel as the shell and are equipped with filter elements inside (for example.PPCotton is mainly used after multi-media pretreatment filtration and before membrane filtration equipment such as reverse osmosis and ultrafiltration. It is used to filter out fine substances after multi-media filtration (such as tiny quartz sand, activated carbon particles, etc.) to ensure the accuracy of water quality filtration and protect the membrane filtration elements from damage by large particles. The precision grades of the filter elements installed in the precision filtration device can be classified as0.5μs,1μs,5μs,10μsFor instance, different filtration precisions should be selected based on various application scenarios to ensure the precision of the effluent and the performance of the membrane elements in the subsequent stage.

"AdoptPPDifferent materials such as cotton, nylon and melt-blown are used as filter cores to remove tiny suspended solids and other impurities in water, so that the raw water quality meets the feed water requirements of reverse osmosis membranes.

2Editing of Process Principles

Security filters belong to precision filters. Its working principle is to utilizePPFilter element5μmThe pores are mechanically filtered. The trace suspended particles, colloids, microorganisms and other substances remaining in the water are retained or adsorbed on the surface and in the pores of the filter element. As the water production time increases, the operating resistance of the filter element gradually rises due to the contamination of the retained substances. When the water pressure difference between the inlet and outlet during operation reaches0.1MPaWhen in use, the filter element should be replaced. The main advantages of security filters are high efficiency, low resistance and easy replacement.

3Structure and principle editing

The security filter uses formed filter materials. Under the action of pressure, the raw liquid passes through the filter material, the filter residue remains on the pipe wall, and the filtrate passes through the filter material and flows out, thus achieving the purpose of filtration. Structure: Filter cloth, filter screen, filter sheet, sintered filter tube, wound filter element, melt-blown filter element, etc. The pore size of the filter varies due to the difference in filter materials. Precision filtration lies between sand filtration(Coarse filtration)A type of filtration between ultrafiltration and ultrafiltration, with a filtration pore size generally within0.5～120μmScope. Filter materials of the same form can be classified into different specifications according to their external dimensions. Wound filter element(Also known as honeycomb filter element)There are two types: one is polypropylene fiber---Polypropylene skeleton filter element, high operating temperature60℃;Another type is absorbent cotton fiber---Stainless steel frame filter element, high operating temperature120℃. Meltblown filter elements are filter materials made of polypropylene as raw material and formed by meltblown process, with high working temperature60℃. Precision filtration can remove suspended solids, certain colloidal substances and small particles from water.

4The protection editing of the security filter element

(1)The water source is usually a fixed one and cannot be changed easily;

(2)The operation effect of pretreatment is optimized. The dosage of flocculant and coagulant aid is optimized. The scale inhibitor suitable for the water source is selected. Each pretreatment equipment is adjusted to the best operating state. The operation procedures are strictly followed to ensure that the effluent quality of pretreatment is qualified;

(3)Choosing brand filter elements with guaranteed quality can not only extend the service life of the filter elements but also ensure the water quality of the security filter. Such asGEOsmonicsThe filter element, its filtration accuracy is5±0.5µmAdoptedZ.Plex"TechnicalGEOsmonics"New type"PurtrexThe filter element has redefined everything beforeROStandards for pretreatment performance and filter element construction.Z.PlexThe technology adopts short-diameter meltblown filter elements, wide layer spacing and a three-dimensional fiber matrixPurtrexThe filter element is particularly suitable for water treatment applications because fine sand particles in water treatment applications can easily cause clogging of reverse osmosis equipment. This type of filter element is unrivaled in intercepting impurities in water, has lower pressure loss and a longer service life than most similar filter elements. Under the no-load housing of the filter element, fibers and three-dimensional mesh form various pores, which can effectively capture impurities. In the following filter layer,Z.PlexThe unique fiber structure of the technology has an increasing number of small pores until the filter element, which can maximize the service life of the filter element and the efficiency of sludge removal.

For precise micron-level filtration, the inner core is the next layer of filtration. The inner core is a hot-melt bonded structure, featuring unrivaled integrity, downstream cleanliness and rigidity, and does not require a support core. Similarly, the adhesive surface coating with extremely strong penetration performance is very smooth and can prevent loose fibers from moving, which is crucial for applications with high purity requirements.

5Feature Editing

Precision filters have the following features:

.It can effectively remove suspended solids, rust and other substances from liquids.

.It can withstand a relatively high filtration pressure.

.The deep mesh structure of the filter element enables it to have a high slagging load capacity.

.Filter elements can be made of various materials,To meet the needs of various fluid filtration.

.Small in size and shape,Large filtration area,Low resistance,Long service life

6Function and purpose editing

To prevent suspended particles that were not removed or newly generated during pretreatment from entering the reverse osmosis system and to protect the high-pressure pump and reverse osmosis membrane, a filter cartridge type security filter is usually installed before the reverse osmosis feed water. Generally, the aperture is less than10μmAccording to the actual design situation, it can be designed as5μmOr even lower.

7Component editing

The security filter is mainly composed of a filter housing, a filter element, etc. The filter housing is mostly made up ofR304It is made of stainless steel and can be used in special occasions such as acid and alkali resistanceR316The shell is made of stainless steel. It can be divided into flange type and clamp type, and the flange type housing is mainly used in situations where the filtration flow is large. The filter element installed in the middle of the filter housing mainly consists ofPPThe filter cotton core is the main type. In some cases, wound filter cores or activated carbon filter cores can also be selected. The number of filter elements installed can range from one to dozens, mainly determined by the size of the processing volume.