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Why are primary paper frame filters suitable for pre-filtration?
Why are primary paper frame filters suitable for pre-filtration?+The outer frame of the primary paper frame filter is generally divided into a general hard paper frame and a high-strength touch-cut cardboard, the filter element is a pleated fiber filter material lined with a single-sided wire mesh.Beautiful appearance. The structure is robust and durable. The general cardboard frame is used for manufacturing non-standard specification filters, which can be used for any specification filter production, high strength, and should not be deformed. High-strength touch and hard cardboard are used to manufacture standard specification filters, characterized by high specification accuracy and low cost of aesthetics. Clean room engineering is a complete system, it contains a building structure, building decoration, wind system, gas system, water system, chemical material supply system, power distribution system, automatic control system, equipment installation, fire protection system, shielding facilities, anti-static facilities which are several major subsections. In the installation of air filters need to be used together with the primary filter and medium-effect filter and high-efficiency filter, the primary paper frame filter is mainly used to purify the fresh air inlet of the air conditioning system as a pre-filter, retaining the large particle size in the atmosphere. The filter is intended for suspended particles larger than 5μm and sedimentary particles larger than 10μm, as well as various foreign objects, to prevent them from entering the system. The filter material is generally sprayed rubber cotton, polyester non-woven, and polypropylene fiber. The paper frame filters are often used for pre-filtration at the air inlet of air purification equipment. The paper frame filters are usually selected in densely populated and mobile places, such as hospitals, airports, railway stations, shopping malls, schools, etc. The paper frame primary filter mainly filters dust particles above 5um in the air and does pre-filtration to protect the end of the high-efficiency filter and prolong its service life, the outer frame is cardboard, chemically stable and adaptable, the filter material is non-woven with metal mesh wedge-shaped pleats, the structure is stable under the rated wind, the windward side has a large resistance, the filter area is large, and the dust capacity has a long service life. Low price, lightweight, good generality, reduce operating costs, transport attention must not be heavy on the pressure to reduce pressure loss, the frequency of replacement of the primary filter is high. However, due to the different environments, the environment will also affect the service life of the air filter, such as clean rooms. In clean and clean rooms, whether installed in the purification air conditioning unit at the end of the large air volume high-efficiency air filter or high-efficiency air filter installed in the high-efficiency air supply, these need to have accurate running time records and cleanliness and air volume as the basis for replacement, such as in the normal use of the situation, high-efficiency filter life can be up to a year or more, such as front-end protection to do a good high-efficiency filter life If the front-end protection is good, the service life of the high-efficiency filter can be more than two years without any problem, of course, it also depends on the quality of high-efficiency air filter, maybe longer. The initial paper frame filter can be used as a pre-filter to protect the middle and initial filters at the back end, which can make the service life of the high-efficiency filter longer. |
