Dry air hydraulic filters

Dry air hydraulic filter through a dry filter, (such as paper filter) separation of impurities in the air out of the hydraulic filter.

Light vehicles (including cars, mini trucks) used in air is generally a single-stage hydraulic filters. Its oval or elliptical shape and flatbed. The filter material is filter paper or nonwoven fabric. Filter cover with metal or polyurethane, the shell material is a metal or plastic. At rated air volume flow, original filtration efficiency filter should not be less than 99.5%.

Heavy vehicles due to poor working conditions, its air hydraulic filter must be majority. The first stage cyclone pre-filter (such as a blade ring, swirl tubes, etc.), used to filter impurities coarse particles, filtration efficiency above 80%, the second stage fine filter is a porous paper filter (commonly referred to as primary filter), the filtration efficiency of 99.5%. After the main filter and a safety filter, and its role in the installation and replacement of the main filter, or to prevent dust from entering the engine when the main element accidental damage. Secure multi-core material non-woven fabric, but also the use of filter paper.

Wet air hydraulic filters, including two oil-filled bath and oil.

Oil-filled oil off through a filter, separating out impurities in the air, the filter material with metal wire fabric, there are foam. Oil bath is sucked into the dust laden air into the oil tank was removed most of the dust, and then with a mist in the air up through a metal wire wound into a cartridge when further filtration, oil droplets and was stopped by the dust return to the oil tank. Hydraulic oil bath air filter is now generally used for agricultural agencies and marine power.

Oil hydraulic filter located in the engine lubrication system. It is the oil pump upstream and downstream is required in all parts of the engine lubrication. Its role is the oil from the sump to filter out harmful impurities in order to clean the oil supply crankshaft, connecting rod, camshaft, turbocharger, piston rings and other sports vice, lubricating, cooling, cleaning effect, thus extend the life of these components.

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Oil hydraulic filter structure divided by replaceable, spin, centrifugal; by arrangement in the system can be divided into full flow, Split. Oil hydraulic filters filter material used in filter paper, felt, metal, non-woven cloth.

Former eighties, oil hydraulic filter nation engines mostly interchangeable. Hydraulic filter of this structure is to put filters and other parts, such as springs, seals, etc. in a metal housing, the housing filters and other by rod and a metal filter holder connected and fixed. Its advantage is low cost, just regular maintenance to replace the filter. The disadvantage is that the seal point too much, replace the filter may drain installation maintenance parts, is easy to create a loophole, and the replacement of the trouble.

Since the early 1980s, the introduction of spin-on filter plant hydraulic filter production line from Italy since the spin-on hydraulic filter selection gradually recognized as the domestic OEMs. Such hydraulic filter features an internal check valve, a bypass valve, seal point is only one, the overall change, greatly improving the sealing and easy to replace, the filter material to use more imported filter, so high filtration efficiency, flow small resistance, long life. Domestic cars are now used in all such forms of structure of oil hydraulic filters, most mini-cars and large, medium and small passenger cars, light and medium trucks and some heavy-duty trucks and agricultural vehicles have adopted the spin-mounted oil hydraulic filter.

Centrifugal oil hydraulic filters have a rotor set in a shaft, and two jet nozzles opposite direction, when the oil from the nozzle into the rotor, the rotor will quickly rotate the rotor body of the oil is cleaned, oil The impurities are flung centrifuge rotor wall, the nozzle out of the oil flow back to the oil pan. Centrifugal oil filter is characterized by stable performance, structure *, no need to replace the filter, as long as regular disassembly of the rotor, clean the dirt deposited on the walls of the rotor can be reused. Its life can be equated with the engine. Its drawback is that complex structure, higher prices, heavy, etc., for the use of personnel with high technical requirements.