Classification and characteristics of various air filters

(1) Primary air filter use: primary filtration of the filter section or fresh air system in rotary vacuum disc filters general ventilation air treatment equipment. Features: Can replace the filter material by itself, the paper frame initial effect is disposable.
G series: initial air filter with small resistance; Large air volume; Use large life long.
Scope of adaptation: Suitable for primary filtration of air conditioning systems. The primary air filter is suitable for primary filtration of air conditioning systems and is mainly used to filter dust particles above 5 米m. The initial filter has three styles: plate type, folding type and bag type, the outer frame material is paper frame, aluminum frame, galvanized iron frame, the filter material is non-woven fabric, nylon mesh, activated carbon filter material, metal hole mesh, etc., and the protective mesh has double-sided sprayed iron mesh and double-sided galvanized iron mesh.
The characteristics of the primary filter: low price, light weight, good versatility, compact structure. Mainly used for:
a. Pre-filtration of central air conditioning and centralized ventilation system
b. Large air compressor pre-filtration
c. Clean return air system
d. Pre-filtration of local high-efficiency filtration devices
e. High temperature resistant air filter, framed with stainless steel, high temperature resistant 250-300 ～C filtration efficiency
This efficiency filter, commonly used as a primary filtration of air conditioning and ventilation systems, is also suitable fine bubble diffuser for simple air conditioning and ventilation systems that require only one level of filtration. G series crude air filter is divided into eight varieties, namely: G1, G2, G3, G4, GN (nylon mesh filter), GH (metal mesh filter), GC (activated carbon filter), GT (high temperature resistant coarse filter).

(2) Folding medium-efficiency air filter use: ventilation system filtration. General air purification in the fields of electronics, pharmaceuticals, mechanical instrumentation, metallurgy, petroleum, chemical industry, light industry, food and other fields. Features: high efficiency, large dust holding capacity, small space occupation.

(3) Bag type medium efficiency air filter use: central air conditioning centralized ventilation system, or as the front filter of high efficiency filter, it can reduce the burden of high efficiency filter, prolong its service life, and can also be used for general air purification in the industrial field. Features: small resistance, large dust holding capacity.
Medium-efficiency filters are mainly used for central air conditioning and centralized air supply systems. It can be used for primary filtration Dissolved Gas Flotation of air conditioning systems to protect the next level filter in the system and the system itself, in the place where the requirements for air purification and cleanliness are not strict, the air after the medium-efficiency filter treatment can be directly sent to the user's medium-efficiency bag filter frame has cold plate spraying, galvanized sheet and other forms, filter materials such as non-woven fabrics, glass fibers, etc., filter particle size 1 ~ 5um, filtration efficiency 60 ~ 95% (colorimetric method).
Medium-efficiency air filter, mainly used to capture 1-5μm of particulate dust and various suspended solids, is widely used in various air conditioning equipment and air conditioning systems, and is also used for intermediate protection of multi-stage filtration systems. This series of products is mainly a bag structure, the outer frame materials are: aluminum alloy, galvanized steel plate, can also be made into a frameless. The filter element material is mainly non-woven fabrics.