Pall filter (Pall filter selection)

Today, Xiaobian will share the knowledge of Parr filter, and also analyze and answer the choice of Parr filter. If you can solve the problem you want to know, pay attention to this website.

What do letters and numbers in the filter model mean respectively?

1, HC: stands for _ of Pall filter series, and other series include HFU, UE, etc.

2.9020: indicates the serial number of pall filter element. If the serial numbers of the filter elements are the same, it means that their inner diameter and outer diameter are the same.

3.FKN: it needs to be disassembled here, where F stands for oil filter element, K stands for filtration ratio ≥200 and there is a metal protective net inside and outside, and there is a nonmetallic protective layer inside the filter material, and N stands for filtration accuracy of 6 microns. ..

A, there are two other letters used to indicate the filtration ratio of Paley filter element, one is D, the ultra-thin ratio is more than or equal to 200, there is a gold exhibition guard net inside and outside, and the other is U, the filtration ratio is more than or equal to 75, and there is a metal guard net inside.

B There are also five letters used to indicate the filtration accuracy of pall filter element, namely, Z= 1μm, N=6μm, S= 12μm, T=25μm and r = 40 μ m.

4. The height of the pall filter element is 8 inches, that is, the length of the core is 203.2 mm. In is _, and the unit of length is1in = 25.4 mm.

5.z: indicates that the seal of pall filter element is fluororubber; There is also the letter J, which stands for ethylene or propylene, the letter P stands for neoprene, and the letter H stands for neoprene.

Model and description of PALL filter element

The meaning of the coding rules of the elements of Parr filter.

From the model, we can first divide the model into five parts, so as to understand the coding rules and meanings of Pall filter elements. Take HC9020FKN8Z as an example this time:

1, HC: It is one of the series of pall filter elements, and other series include HFU, UE, etc.

2.9020: indicates the serial number of pall filter element. If the serial numbers of the filter elements are the same, it means that their outer diameters and inner diameters are the same.

3.FKN: it needs to be disassembled here, where F stands for oil filter element, K stands for filtration ratio ≥200 and there is a metal protective net inside and outside, and there is a nonmetallic protective layer inside the filter material, and N stands for filtration accuracy of 6 microns. ..

A There are also two letters used to indicate the filtration ratio of pall filter element, one is D, the filtration ratio is ≥200, there is a metal guard net inside and outside, and the other is U, the filtration ratio is ≥75, and there is a metal guard net inside.

B There are also five letters used to indicate the filtration accuracy of pall filter element, namely, Z= 1μm, N=6μm, S= 12μm, T=25μm and r = 40 μ m.

4, 8: It means that the height of the pall filter element is 8 inches, that is, the length of the filter element is 203.2 mm. In is _, and the unit of length is1in = 25.4 mm. 。

5.z: indicates that the seal of pall filter element is fluororubber; There is also the letter J, which stands for ethylene or propylene, the letter P stands for neoprene, and the letter H stands for neoprene.

Schematic diagram of pall filter model explanation

How to seal the Qualcomm filter element?

Use o-ring seals. Pall is a new type of filter element. Because it contains a lot of oil, it needs to be sealed strictly. O-ring is made of nitrile rubber, natural rubber, chloroprene rubber, ethylene-propylene rubber, fluororubber, silicone rubber and * * * rubber, which can seal pall to the greatest extent.

What are the uses of pall filter element?

use

Pall pall filter element shall be installed at the oil suction port of the pump;

The surface oil filter is usually installed on the oil suction pipe of the pump for the following purposes.

Filter out larger impurity particles to protect the hydraulic pump. In addition, the filtering capacity of the oil filter should be greater than twice the pump flow, and the pressure loss should be less than 0.02MPa.

Pall filter element is installed on the outlet oil path of the pump;

The purpose of installing oil filter here is to filter out pollutants that may invade valves and other parts. Its filtration accuracy should be 10 ~ 15 micron, and it can withstand the working pressure and the impact pressure on the oil pipeline, and the pressure drop should be less than 0.35MPa. At the same time should be installed.

Safety valve to prevent oil filter from clogging.

Pall filter element is installed on the oil return path of the system: this installation plays an indirect filtering role. Usually, the back pressure valve is installed in parallel with the filter. When the filter is blocked to a certain pressure value, the back pressure valve opens.

Pall filter element is installed on the branch oil path of the system.

Pall filter element independent filtration system: large hydraulic system can be equipped with hydraulic pump and oil filter to form independent filtration.

four

Cycle.

In the hydraulic system of Pall filter, in addition to the oil filter needed by the whole system, a special fine oil filter is often installed in front of some important components to ensure its normal work.

Performance index

Medium: common hydraulic oil, phosphate ester, emulsified water of hydraulic oil-hexanediol.

Material: glass fiber filter paper -BN stainless steel woven net -W wood pulp filter paper -P stainless steel sintered net-V.

Filtering accuracy:1μ m ~100μ m.

Working pressure: 2 1 bar -2 10 bar.

Working medium: common hydraulic oil, phosphate hydraulic oil, emulsion and water-glycol

Working temperature: -30℃ ~+ 1 10℃

Sealing material: fluororubber ring Ding Qing glue.

product application

2. Petrochemical industry: separation and recovery of products and intermediate products in petroleum refining and chemical production, liquid purification, purification of tapes, optical discs and photographic films in manufacturing, particle removal and filtration of well water injected into oil fields and natural gas.

3. Textile: purification and uniform filtration of polyester melt during drawing, protective filtration of air compressor, oil removal and water removal of compressed gas.

4. Electronics and pharmacy: pretreatment and filtration of reverse osmosis water and deionized water, pretreatment and filtration of cleaning solution and glucose.

5. Thermal power and nuclear power: purification of lubrication system, speed regulation system and bypass control system of gas turbine and boiler, purification of feed water pump, fan and dust removal system.

6. Mechanical processing equipment: lubrication system and compressed air purification of paper-making machinery, mining machinery, injection molding machine and large precision machinery, dust recovery and filtration of tobacco processing equipment and spraying equipment.

7. Railway internal combustion engines and generators: filtration of lubricating oil and engine oil.

8. Automobile engines and construction machinery: air filters, oil filters, fuel filters for internal combustion engines, various hydraulic filters, diesel filters and water filters for construction machinery, ships and trucks.