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Metal pleated filter element
Metal filter elements usually made of metal filter materials and assembled with a welded structure. Metal pleated filter elements are a special type of metal filter element, which increase the filtration area per unit volume by pleating and assembling the metal filter materials. Metal pleated filter elements are sometimes also called metal pleated wave filter elements or metal wave-leaf filter elements.
Which filter materials can be used to make it?
(1) Metal wire mesh. Metal wire mesh is the most common metal filter material, which is made of metal wires woven into a mesh fabric. The precision range is from nominal 1 micron to hundreds of microns. The weaving structure and the combination of warp and weft of the wire mesh are very flexible and variable, which can meet the diverse needs of various application fields. Due to the filtering principle of metal wire mesh, metal wire mesh pleated filter elements are often easier to clean and regenerate. At the same time, wire mesh filter elements are also the most economical type of metal filter element.
(2) Metal sintered fiber. Metal sintered fiber is a three-dimensional porous metal filter material formed by laying micrometer-sized metal fibers in an unordered manner similar to non-woven fabric. Its precision range is from absolute 3 microns to 100 microns. Metal sintered fiber has the characteristic of deep filtration and has a higher pollutant-capturing capacity. Another prominent feature of sintered fiber is its extremely high porosity (usually 70% to 80%), which makes it have lower pressure loss and is more suitable for filtering high-viscosity fluids.
(3) Metal sintered mesh. Sintered mesh is a multi-layer wire mesh formed by combining multiple layers of wire mesh through sintering. Usually, sintered mesh are not pleated, but through special wire selection and design, pleated metal sintered mesh can be made. Metal sintered pleated filter elements have the same characteristics as metal wire mesh pleated filter elements, while also achieving higher strength and long-life, and is a better solution in special working conditions or under specific requirements.
What is the structure of it?
The fully equipped metal folded filter element generally has the following structure:
(1) The connector cap. It is a metal part used for connecting and sealing the filter element with the housing. Common forms include 226 (double sealing rings + locking wings), 222 (double sealing rings), NPT threads, M threads, DOE double opening end, etc.
(2) The inner support core.It provides internal support for the pleated filter material to prevent it from collapsing under pressure. Usually, spiral perforated tubes or straight seam perforated tubes are used. In special designs, wedge wire tubes, circular winding wire tubes, etc. are also used as support tube.
(3) The pleated mesh sleeve. The material usually has at least 3 layers: the inner protective layer, the main filter layer, and the outer protective layer. In special designs, there may also dispersion layers or reinforcing The inner and outer protective layers are generally 30 to 80 mesh wire mesh.
(4) The outer protective cage.It provides external protection for the pleated filter material to prevent it from bursting or deforming when subjected to reverse pressure. Usually， large opening rate square or round hole perforated tubes，wire springs or metal bands are used.
(5) The bottom cap. The bottom capis an essential component of the single-opening filter element， serving both the sealing function and the positioning and auxiliary installation functions. The bottom end has flat bottom， hexagonal bottom， with positioning wings， with positioning screws， etc.
The core advantages :
(1). High Filtration Precision
Pleated metal filter cartridges can be customized to different filtration rating ranging from 3 microns to 200 microns, meeting the filtration requirements of various industries, such as drinking water purification, industrial oil filtration, chemical medium purification, and high-temperature gas filtration.
(2). Long Service Life
Metal materials have excellent corrosion resistance and mechanical strength, can withstand high-temperature and high-pressure environments, and are less prone to deformation or damage. Compared with traditional PP cotton or activated carbon filter cartridges, metal filter cartridges can be repeatedly cleaned and reused, significantly reducing replacement frequency and costs.
(3).High flow rate, low pressure drop.
The folded structure design enables the filter element to maintain high precision while still providing a large flow rate, reducing fluid resistance and improving system operation efficiency.
(4). Environmentally friendly and recyclable
The metal filter element can be fully recycled, avoiding environmental pollution caused by the disposal of traditional filter elements, in line with the concept of green and sustainable development.
Application fields
Household water purification: used in high-end water purifiers to filter out rust, sediment and other particles, providing cleaner and safer drinking water.
Food and beverage industry: filtering syrup, juice, beer, etc., to ensure product purity.
Petroleum and chemical industry: used for fuel and lubricating oil filtration, protecting equipment from particle wear.
Pharmaceutical industry: filtering liquid medicine in aseptic production processes to ensure drug quality.
Electronic industry: preparing ultra-pure water, preventing tiny particles from affecting precision electronic components.
Maintenance and care
The pleated metal filter element supports reverse flushing, ultrasonic cleaning or chemical cleaning, and can be reused after restoring its filtration performance. Regular maintenance can extend its service life and reduce operating costs.
Conclusion
The pleated metal filter element, with its high efficiency, durability and environmental friendliness, has become a representative product of modern filtration technology. Whether it is household water purification or industrial precision filtration, it can provide stable and reliable solutions to meet the strict requirements of different scenarios. Choosing a metal filter element means choosing a long-lasting high-quality filtration experience!
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