Briefly discuss the characteristics of several common oil filters on the market

Classification of oil filters

According to the different principles of the oil filter, the oil filter is roughly divided into the following categories:

1. Plate and frame oil filter

2.Vacuum oil filter

3.Coalescing settling oil filter

4.Centrifugal separation oil filter

5.ZTS integrated purification equipment

6.Stainless steel oil filter

Characteristic analysis

The advantages and disadvantages of several common oil filters on the market are introduced as follows

(1) hand-pushed precision oil filter: mainly composed of filter element, shell, oil pump and fixing device. It is mainly composed of filter element, shell, oil pump and fixing device. After the fluid oil pump flows into the filter element from the filter inlet, the impurities are intercepted on the surface and deep layer of the filter element, and the clean fluid flows out from the outlet. The filter element is mostly cylindrical metal mesh to prevent the large solid particles in the unclean oil from entering the oil pump. The oil pump is usually a gear pump, which transmits impure oil into the filter.

Advantages and disadvantages: Precision oil filter is widely used in various industries for its reasonable design, large oil output and convenient cleaning. It can be used as pretreatment and terminal treatment of oil products. The filter effect of common mechanical impurities in oil is obvious and the precision is high. The equipment is light and easy to operate. This kind of equipment is not suitable for dealing with oil with mud or dust impurities, too many impurities, blockage will be more serious, replacement of consumables cost will become high.

(2) Vacuum oil filter: including primary filter, vacuum evaporation tank, oil pump, filter device, condenser (condenser) and vacuum pump and other parts. Equipment generally has dehydration, emulsification, removal of harmful gas, also has the function of filtering impurities. The water in the oil is heated and quickly evaporated into water steam, which is condensed into the condenser and then discharged. The uncondensed water vapor is discharged to the atmosphere by the vacuum pump. Collected at the bottom of the vacuum evaporation tank, the evaporated and dehydrated oil is sent to the filter device by the oil pump to filter out the solid impurities in the oil and further absorb the trace water.

Advantages and disadvantages: the deemulsification and micro-water treatment effect of vacuum machine is good, and most of them are recycling purification treatment. Water content treatment to the national standard range generally no problem. But if the minimal water content required to filter is different, because the filter effect of the vacuum oil filter is affected by the area of the vacuum separation tank. The effect of removing impurities is the same as that of the hand-pushed precision oil filter. Filter oil sludge or dust too much oil, need to be pretreated.

In summary, the selection of oil filter equipment, customers should determine the selection of appropriate oil filter equipment according to the specific situation of the oil quality of the unit, in order to achieve both purification effect and use cost.

(3) Plate and frame pressure oil filter: The representative is this plate type oil filter, which uses filter paper and is reproduced by many factories in the country. It is a kind of original oil filter equipment.

The advantage is that, such as oil in the unqualified edge, use can play a good role. The disadvantage is that the cost is large, the filter paper consumption is much, the work intensity is large.

(4) Coalescing and separating type oil filter: This type of oil filter uses coalescing and separating filter elements when filtering water, and uses pre and fine filter elements when filtering impurities.

The water removal effect of this kind of equipment can only reach close to the qualified edge, but can not remove trace water; The consumables are generally dehydrated filter element and deimpurity filter element, and the effect of removing impurities is generally close to that of precision oil filter. But the size of the equipment is generally small, and the floor area is not large.