CN205569916U - Be used for filterable two -stage of oil integration composite filter element - Google Patents

Abstract

The utility model discloses a be used for filterable two -stage of oil integration composite filter element, including upper end cover, bottom end cover, skeleton, folded filter paper and polyamide filter media, the skeleton interior pillar and outer pillar that include coaxial setting, upper end cover and bottom end cover fix two axle heads at folded filter paper and polyamide filter media, and open at least on upper end cover and the bottom end cover and have an oil outlet, folded filter paper cup joint including the pillar outer lane, the polyamide filter media cup joint pillar outer lane outside, the polyamide filter media adopt polyamide material pass through that melt blowing process handles and, melt spun superfine fiber silk and make polyamide polyurethane elastic nonwoven through mutual adhesion and winding, polyamide polyurethane elastic nonwoven be loose construction, contain the filtration pore in different apertures on it, ensureing that the material has under the prerequisite of the resistant mellow wine corruption of resistant oil, have higher filter fineness, pollutant carrying capacity and water oil separating ability, satisfied the filtration requirement of common oil.

Description

A kind of two-stage integration composite filter element filtered for oil product

Technical field

This utility model relates to a kind of filtering material and preparation facilities thereof and preparation method, a kind of gathering for oil product Amide melt spraying non-woven fabrics and the composite filter element of folded filter paper.

Background technology

Engine fuel can produce and be mixed into a large amount of impurity during producing, transporting and deposit.Clean fuel oil is in storage Also can produce metal-oxide after a period of time, separate out the pollutant such as colloid, asphalitine.The fuel oil of severe contamination can cause The abrasion at the positions such as electromotor injection system and combustor and carbon distribution generate so that fuel engines is in use for some time Fuel consumption increases, the hurried rising of exhaust emissions amount.The most universal solution is to install oil product filter on the engine, Remove impurity, colloid, asphalitine and the moisture etc. in fuel oil, make fuel oil clean.Clean fuel oil can improve burning effect Rate thus saving fuel oil, reduction discharge；Also can reduce electromotor heel and toe wear, increasing service life of engine, make to send out Motivation slows down along with the trend extending oil consumption increase of the time of use.

The oil product filter of the most domestic more than 98% uses wood pulp filter paper, in high precision composite filter paper or wire netting to be filter material, To reach to remove impurity and the purpose of moisture in oil product.The circulating resistance of filter paper is big in high precision, water environment capacity is poor, use the longevity Order short；Though wood pulp paper and wire netting have the advantage that circulating resistance is little, but filtering accuracy is low, filter efficiency is poor.These are several Filter material all can not meet the requirement that in industrial processes, oil product is filtered by equipment, causes equipment failure rate height, operational efficiency The problems such as low, the lost of life.

During melt-blown process is widely used in the manufacture of polypropylene filter material at present.Melt-blown be exactly by polymeric material through high temperature extrude after Forming superfine cellosilk, and be prepared as corresponding shape and structure, polypropylene melt-blown filter material has that water environment capacity is strong, filters Precision advantages of higher, and it is prone to batch production, but it is currently only used for the filtration of air and water, this is because industry oil Product the most all contain alkane, alkene, cycloalkane, aromatic hydrocarbon, polycyclic aromatic hydrocarbon and a small amount of sulfur, nitrogen compound etc., for a long time Contact oil product can cause polypropylene articles be dissolved corrosion, be swelled into grume, lose filter capacity, therefore, poly-third The melt-blown filter material of alkene cannot be applied to industrial oil filtration art.

Therefore, from the point of view of the filtering perspective of industrial oil, it is badly in need of the melt-blown filter wanting a kind of special material to make through melt-blown process Core, and there is the advantage of conventional meltblown filter element, it is resistant to the corrosion of the oil products such as diesel oil, gasoline, ethanol, and energy simultaneously The Colophonium contained in oil product, water, dust, mechanical admixture etc. are filtered, especially there is certain oil-water separation.

The Chinese patent of Application No. 200510040447.2 discloses " oil-water separating net of a kind of super-hydrophobic/super-oleophilic ", Propose to cover one layer of hydrophobic and thin film of oleophylic in fabric web, utilize the hydrophobic function of thin film, it is achieved the profit in oil product Separate.This is the technical thought that current oil product filtration art is commonly used, i.e. uses hydrophobicity filter material, by water from fuel oil Separating, and " dredging " aqueous of filter material can be the best, its effect separating water is the best.But this thin film of problem existed Complex manufacturing technology, and other filtering function and index are the best, it is difficult to obtain practical popularization.

Utility model content

Problem to be solved in the utility model is that proposition is a kind of based on being combined that meltblown polyamide filter material and folded filter paper are made Filter element, this filter element has the advantages such as water environment capacity is strong, filtering accuracy is high, circulating resistance is little, and it is rotten to have the resistance to alcohol of oil resistant Erosion, and there is higher oil-water separation efficiency.

The technical solution of the utility model is as follows:

A kind of two-stage integration composite filter element filtered for oil product, including upper end cover, bottom end cover, folded filter paper and polyamides Amine filter material, described folded filter paper and polyamide filter material are all in tubular structure, and polyamide filter material is arranged on outside folded filter paper Circle, described upper end cover and bottom end cover be fixed on two axle heads of folded filter paper and polyamide filter material, and upper end cover and lower end Covering and at least have an oil outlet, described polyamide filter material is to use polyamide material to pass through melt-blown process to process, melt The superfine fibre silk of ejection makes polyamide melt spraying non-woven fabrics, described polyamide melt-blown nonwoven through mutually bonding and winding Cloth is open structure, and it is placed with filter opening.

Above-mentioned in the two-stage integration composite filter element that oil product filters, composite filter element also includes and folded filter paper and polyamide The skeleton that filter material is coaxially disposed, described skeleton includes inner protective tube and/or outer pillar.

It is above-mentioned that in the two-stage integration composite filter element that oil product filters, described folded filter paper is socketed in inner protective tube outer ring, Described polyamide filter material is socketed in the outer ring of outer pillar or folded filter paper.

Above-mentioned in the two-stage integration composite filter element that oil product filters, the thickness of polyamide melt spraying non-woven fabrics is 0.3-1.5mm, the average pore size of polyamide melt spraying non-woven fabrics is 1-100 μm, and the average diameter of meltblown fibers silk is 0.1-80 μm, the porosity of filter material is more than 80%.

It is above-mentioned that in the two-stage integration composite filter element that oil product filters, polyamide melt spraying non-woven fabrics thickness is 0.3-1.0mm, The average pore size of polyamide melt spraying non-woven fabrics is 10-40 μm, and the average diameter of meltblown fibers silk is 5-50 μm, filter material Porosity is more than 90%.

Above-mentioned in the two-stage integration composite filter element that oil product filters, the thickness 0.3-1.5mm of folded filter paper, on filter paper The average pore size of filter opening is 1-100 μm.

Above-mentioned in the two-stage integration composite filter element that oil product filters, filter paper is high accuracy composite filter paper.

Above-mentioned in the two-stage integration composite filter element that oil product filters, polyamide is PA6 and PA66.

Above-mentioned in the two-stage integration composite filter element that oil product filters, upper end cover, bottom end cover, skeleton are polyamide system Become.

Above-mentioned in the two-stage integration composite filter element that oil product filters, oil product is fuel oil, machine oil or hydraulic oil.

The Advantageous Effects that this utility model has is as follows:

1 it is known that polyamide is a kind of hydrophilic material, according to the thinking in aforementioned background art, water wetted material Not being suitable for filter material, main cause is non-hydrophobic material, it is difficult to realize the oil-water separation in oil product.This practicality Novel propose a kind of utilize meltblown polyamide material to make the scheme of filter material, filter element and filter, by control filter material Structural parameters, it is achieved that the filtration of the oil product such as fuel oil or lubricating oil, guaranteeing material have oil resistant resistance to alcohol corrosion premise Under, there is higher filtering accuracy, water environment capacity and oil and water separation capability, the program breaches tradition filter material to meet Oil-water separation index can only select the restriction of hydrophobic material, make full use of that polyamide material has in oil product corrosion-resistant, The feature such as highly reliable, meets the filtering requirement of common oil product.

2, this utility model in melt-blown process by control filametntary output aperture, melt-blown pressure, the temperature of extruder The parameters such as the temperature of degree, the temperature of manifold and meltblown beam so that melt-blown fibre diameter parameter reaches to design requirement, Simultaneously by adjusting reception unit reception speed and receiving angle in melt blown process, control the mean porosities on filter material and filter The aperture in hole, is finally reached design requirement.

3, this utility model is by the master batch additive being mixed in cutting into slices at polyamide, substantially increases filametntary toughness And intensity, overcome meltblown fibers silk fracture of wire, thickness is uneven, production efficiency is low problem.

4, this utility model uses polyamide melt spraying non-woven fabrics and folded filter paper double medium filtration function, wherein polyamide filter material Realize filtering and emulsified water breakdown of emulsion, and the oil-water separation of primary, filter paper is then used for further fine straining and oil-water separation, The two combines can improve filtering accuracy, the water environment capacity of filter element and service life further.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model composite filter element；

Fig. 2 is the composite filter element cross-sectional view using wound form polyamide melt spraying non-woven fabrics；

Fig. 3 is the composite filter element cross-sectional view using collapsible polyamide melt spraying non-woven fabrics；

Fig. 4 is the structural representation of this utility model polyamide melt spraying non-woven fabrics device for melt blowing；

Fig. 5 is this utility model meltblown beam operation principle schematic diagram.

Reference is as follows: 1 upper end cover；2 bottom end covers；3 inner protective tubes；4 filter paper；5 outer pillars；6 gather Amide melt spraying non-woven fabrics；7 sealing rings；9 oil outlets；71 air compressors；72 extruders；73 filter list Unit；74 manifold；75 meltblown beam；76 receive unit；77 winder units；81 air chamber；82 moulds Head mainboard；83 heating plates；84 gas circuits；85 material roads.

Detailed description of the invention

As shown in Figure 1, Figure 2 and Figure 3, two-stage integration composite filter element of the present utility model includes upper end cover 1, lower end Lid 2, skeleton, folded filter paper 4 and polyamide filter material 6, polyamide filter material i.e. polyamide non-woven fabrics.Skeleton includes coaxially The inner protective tube 3 arranged and/or outer pillar 5, skeleton is arranged on inside filter material for pressure-bearing and supporting role.Upper end cover 1 He Bottom end cover 2 is fixed on two axle heads of polyamide filter material and folded filter paper, and at least has on upper end cover 1 and bottom end cover 2 One oil outlet 9, is provided with sealing ring 7 between oil outlet and end cap.The oil product filtered passes filter from the outer layer of filter material Impurity is filtered by material body, then flows out through oil outlet 9.Folded filter paper 4 is socketed in inner protective tube 3 outer ring, polyamide Filter material 6 is socketed in outer pillar 5 or folded filter paper 4 outer ring, can be directly wound in outside outer pillar 5 or folded filter paper 4 Circle (as shown in Figure 2), can also be socketed in outer protecting to increase water environment capacity after being folded by polyamide melt spraying non-woven fabrics 6 On the outer ring of pipe 5 or folded filter paper 4 (as shown in Figure 3).

Polyamide melt spraying non-woven fabrics use polyamide material processed by melt-blown process and obtain, melt-blown go out superfine fibre silk warp Crossing mutually bonding and winding and make polyamide melt spraying non-woven fabrics, polyamide melt spraying non-woven fabrics is open structure, and it comprises row It is furnished with filter opening.The thickness of polyamide melt spraying non-woven fabrics is chosen as 0.3-1.5mm, the average pore size of polyamide melt spraying non-woven fabrics For 1-100 μm, the average diameter of meltblown fibers silk is 0.1-80 μm, and the porosity of filter material is more than 80%.As one Optimal way polyamide melt spraying non-woven fabrics thickness is 0.3-1.0mm, and the average pore size of polyamide melt spraying non-woven fabrics is 10-40 μm, the average diameter of meltblown fibers silk is 5-50 μm, and the porosity of filter material is more than 90%, and these parameters can be further Improve and filter index, optimize performance.

In composite filter element, filter paper folds for high accuracy composite filter paper and forms, and the average pore size of filter paper is 1-100 μm, Thickness 0.3-1.5mm.The generally broken number of the folding of polyamide melt spraying non-woven fabrics 6 and filter paper is tens of folding.Wherein polyamides Amine filter material realizes filtering and emulsified water breakdown of emulsion, and folded filter paper is used for further fine straining and oil-water separation, and the two combination can be entered One step improves filtering accuracy and oil-water separation rate.As a kind of optimal way, upper end cover, bottom end cover and skeleton all use poly- Amide material is made, and is respectively provided with preferable oil resistant corrosive power.

This utility model is by controlling the structural parameters of polyamide filter material, it is achieved that the filtration of the oil product such as fuel oil or lubricating oil, There is higher filtering accuracy, water environment capacity and oil and water separation capability.Its work principle of filter is as follows: when oil product is by filter element Outside when filter material is exported by oil outlet again, Colophonium, dust and mechanical admixture in oil product are blocked and adsorb passing through On the polyamide melt spraying non-woven fabrics folded, and by higher mean porosities and aperture parameters and foldable structure, improve Carrying capacity to impurity；Internal layer composite filter paper also passes through folding, and its aperture is compared less, and porosity is relatively low, so The setting of the filter opening that non-woven fabrics gradually successively decreases is folded to internal layer folded filter paper, outside being trapped in by the impurity of big particle diameter by outer layer On the polyamide melt spraying non-woven fabrics of layer, the impurity absorption of small particle is on the composite filter paper of internal layer.Different by inside and outside two-stage Filter material impurity is filtered, the disposable impurity separating variable grain size, simple in construction, improved efficiency.

Polyamide filter material has the mechanism of higher oil-water separating function and is described below: polyamide melt-blown filter materials is originally as parent Water oleophobic material, its material itself has the hydrophilic of excellence, and the cellosilk of melt-blown formation is very thin, in winding process It is internally formed numerous capillary holes.Result of study shows, in oil product, overwhelming majority water is with the little water droplet of free state Exist, and in filter material of the present utility model, the aperture in the capillary hole that either filament diameter is still formed is respectively less than The diameter of the little water droplet of the overwhelming majority, microstructure is seen, the surface tension of oil product drop is much smaller than water droplet, so utilizes thin Surface tension that little water droplet is bigger and by mutual affine cohesion with water wetted material during capillary hole, makes fuel oil In emulsified water breakdown of emulsion after be aggregated into free water, free water the most mutually collides convergence for larger-diameter water droplet, makees at gravity Collect in cleaner bottom secction under with, finally discharged by blowoff valve.

Fig. 4 gives the manufacture device of this utility model polyamide filter material, including air compressor 71, extruder 72, Filter element 73, manifold 74, meltblown beam 75, reception unit 76, air compressor 71 provides for extruder 72 High-pressure air source, the raw material that extruder 72 adds adds and enters manifold 74 after filter element 73 is by contaminant filter after heat fusing, Manifold 74 side is provided with meltblown beam 75, and fused raw material is extruded through the aperture of meltblown beam 75, and at high temperature and high speed Under airflow function melt-blown go out superfine fibre silk to receiving unit 76, inter-adhesive between meltblown fibers receiving on unit 76, Receive and on unit 76, be provided with reception net, form polyamide melt spraying non-woven fabrics, obtain by adjusting the parameter receiving unit Different fibre densities, wall thickness and the differentiated aperture value of ectonexine, winder unit 77 uses and automatically batches, to polyamides Amine smelting spray adhesive-bonded fabric coil is packed.

The effect of extruder 72 is the extruding of solid high polymer, aerofluxus, melted, mixing homogenizing, in stationary temperature The quantitative output high polymer melt with under pressure.Filter element 73 is used to the dress filtering molten polymer Put, inside it, have a circular groove, be used for placing multiple filtration net, it is achieved the contaminant filter in material.Manifold 74 Effect be the melted chain rupture promoting polymer, and the flow path that material is in manifold is equal, absorbs heat energy equal, The pump continuous and quantitative that is finally measured extrusion is got to know.

Meltblown beam signal is as it is shown in figure 5, be divided into supply and feed two parts inside it, above and below material road 85 Having gas circuit 84, and have the angle of 60 ° between gas circuit and material road, die head mainboard 82 is internally provided with air chamber 81, it is provided with heating plate 83 between material road 85 and gas circuit 84, when two strands of airflow collisions form turbulent flow, promotes to expect road 85 The molten polymer of extrusion quickly forms fiber.Nylon meltblown fibers is received unit and receives formation polyamide melt-blown nonwoven Cloth, obtains different fibre density, wall thickness and ectonexine by the aperture value of difference, winding by adjusting the parameter receiving unit Unit 77 uses and automatically batches, and packs polyamide smelting spray adhesive-bonded fabric coil.

The manufacturing step of polyamide filter material of the present utility model is as follows:

[1] polyamide section being added extruder hopper, hopper heater is set as 40-50 DEG C, the baking material time is 4 Hour；

[2] condition of spinning manifold temperature rises to 240-300 DEG C, and fast replacing device is warming up to 240 ± 10 DEG C, and extruder is warming up to 300 ± 10℃.Polyamide raw materials is heated in an extruder after melting and is delivered to filter element, filters impurity at described filter element After be assigned to manifold；

[3] meltblown beam is forced into 0.05-0.07MPa, and temperature rises to 240-300 DEG C, little through meltblown beam of fused raw material Hole is extruded, and becomes melt-blown micro fibre in the strong drawing-off of high-temperature high-speed airflow, and wherein the pressure of extruder is 2MPa；

[4] fiber is attracted on lace curtaining, remains to keep higher temperature after becoming net due to fibre deposition, so that fine Inter-adhesive between dimension become meltblown fibers cloth, by changing the reception speed and receiving angle receiving unit, it is achieved filter material The control of different pore size size structure；

[5] polyamide melt spraying non-woven fabrics is carried out rolling packing, after being cut to different size as required and folding, formed Polyamide filter material.

Wherein adjust 2MPa when the pressure of extruder, fused raw material can be extruded into 0.1-80 μm thread.

As required, step [1] is additionally included in the master batch that is mixed in polyamide section, described master batch include filler, One or more in coupling agent or dispersant, wherein filler includes calcium carbonate, Pulvis Talci etc., coupling agent such as carbonic ester silicon Alkane etc., dispersant such as Tissuemat E, stearic acid salt etc..Wherein the particle diameter of master batch is 1-3m, polyamide section and interpolation The ratio of master batch is 1:0.03.

According to the filter element universal test method in cleaner industry, the parameter of filter element is detected, concrete detection method As follows with condition:

(1) pollutant holding capability:

It is measured by the amount being trapped after cleaner under certain time, flow with certain standard pollutant, refers to state Border standard ISO 19438:2003 automobile engine diesel fuel filter and gasoline filter filtering efficiency and impurity storage capacity Assay method particle counting.

(2) original circulating resistance

Measurement cleaner is when nominal volume flow, and test oil is by the differential static pressure of cleaner.Refer to machinery industry standard JBT 5239.4-2011 diesel filter for diesel engine the 4th part: test method 6.4 original resistance is tested；Or see automobile industry Standard QCT 772-2006 automobile diesel fuel filter test method；Or see that ISO 4020-2001 road vehicle diesel oil is sent out The fuel filter part 1 of motivation: test method.

(3) oil-water separation rate

Measure the percentage ratio that aqueous standard oil is reduced by the water concentration before and after cleaner, refer to international standard ISO TS The appraisal procedure or coarse micro-according to SAE J 1839 (97) of 16332 2006 diesel engine fuel oil cleaner oil-water separation usefulness Drip/fuel separation test code.

(4) filtering accuracy

According to the standard solid composition granule size intercepted by cleaner under nominal volume flow and quantitative measurement cleaner mistake Filter precision and filter efficiency, refer to international standard ISO 19438:2003 automobile engine diesel fuel filter and gasoline filtering The assay method particle counting of device filtering efficiency and impurity storage capacity or the domestic Combustion Engine of ISO/TR 13353-2003 The diesel fuel filter of machine, original effect, vitality capacity and the gravity effect calculated with particle.

(5) aperture and porosity

Non-infiltration liquid is only allowed for access porous body when applying external force, in the case of continuous supercharging, and enters hydrargyrum volume During as external pressure function, the i.e. available hydrargyrum volume entered under external force in evacuation sample, thus record sample Pore-size distribution.Mensuration mode can use continuous supercharging mode, it is possible to uses step-by-step pressurization mode, i.e. certain interval of time After reaching balance, then measure into hydrargyrum volume.Refer to GBT 21650.1-2011/ISO15901:2005 mercury injection method and gas Determination of adsorption method solid material pore-size distribution and porosity part 1: mercury injection method.

Several group specific embodiments are given below:

Embodiment 1: polyamide melt-blown nonwoven cloth material is PA6, with composite filter paper after fold, nested etc. is processed, system The a length of 200mm of tubular element become, external diameter is 100mm, and the thickness of polyamide melt spraying non-woven fabrics is 0.3mm, polyamide The average pore size of melt spraying non-woven fabrics be the average diameter of 10 μm meltblown fibers silks be 0.1 μm, porosity 98.2%； The average pore size of composite filter paper is 1 μm, and thickness is 0.3mm；Filtering oil product type is gasoline；Fold non-woven fabrics and folding Filter applications is in the filter effect of gasoline filter: the filter efficiency to 5-10 μm granule is 98.12%；Water environment capacity is 60.85g, during nominal volume flow 10L/min, original circulating resistance 11.20kpa, oil-water separation rate is 98.25%.

Embodiment 2:, polyamide melt-blown nonwoven cloth material is PA6, with composite filter paper after fold, nested etc. is processed, system The a length of 200mm of tubular element become, external diameter is 100mm, and the thickness of polyamide melt spraying non-woven fabrics is 1.5mm, polyamide The average pore size of melt spraying non-woven fabrics is 100 μm, and the average diameter of meltblown fibers silk is 80 μm, porosity 91.2%；The average pore size of composite filter paper is 50 μm, and thickness is 1.5mm；Filtering oil product type is lubricating oil；Fold nothing Spin cloth and folded filter paper is applied to the filter effect of oil filter: the filter efficiency to 5-10 μm granule is 92.95%； Water environment capacity is 125.99g, during nominal volume flow 10L/min, and original circulating resistance 12.55kpa, oil-water separation rate It is 91.98%.

Embodiment 3: material is PA66；Polyamide melt-blown nonwoven cloth material is PA6, with composite filter paper through folding, nesting After processing, a length of 200mm of tubular element made, external diameter is 100mm, and the thickness of polyamide melt spraying non-woven fabrics is 1mm, the average pore size of polyamide melt spraying non-woven fabrics is 100 μm, and the average diameter of meltblown fibers silk is 25 μm, Porosity 90.2%；The average pore size of composite filter paper is 30 μm, and thickness is 0.5mm；Filtering oil product type is lubricating oil； Folding non-woven fabrics and folded filter paper are applied to the filter effect of oil filter: to the filter efficiency of 5-10 μm granule be 92.75%；Water environment capacity is 102.33g, during nominal volume flow 10L/min, and original circulating resistance 12.05kpa, oil Water separation rate is 91.23%.

Embodiment 4: material is PA66；Polyamide melt-blown nonwoven cloth material is PA6, with composite filter paper through folding, nesting After processing, a length of 200mm of tubular element made, external diameter is 100mm, and the thickness of polyamide melt spraying non-woven fabrics is 1mm, the average pore size of polyamide melt spraying non-woven fabrics is 20 μm, and the average diameter of meltblown fibers silk is 50 μm, Porosity 81.1%；The average pore size of composite filter paper is 1 μm, and thickness is 1mm；Filtering oil product type is gasoline；Fold Non-woven fabrics and folded filter paper are applied to the filter effect of gasoline filter: to the filter efficiency of 5-10 μm granule be 98.91%；Water environment capacity is 87.44g, during nominal volume flow 10L/min, and original circulating resistance 8.89kpa, profit Separation rate is 95.55%.

Embodiment 5: material is PA66；Polyamide melt-blown nonwoven cloth material is PA66, with composite filter paper through folding, nesting After processing, a length of 200mm of tubular element made, external diameter is 100mm, and the thickness of polyamide melt spraying non-woven fabrics is 0.8mm, the average pore size of polyamide melt spraying non-woven fabrics is 100 μm, and the average diameter of meltblown fibers silk is 80 μ M, porosity 86%；The average pore size of composite filter paper is 1 μm, and thickness is 0.5mm；Filtering oil product type is gasoline；Folding Folded non-woven fabrics and folded filter paper are applied to the filter effect of gasoline filter: to the filter efficiency of 5-10 μm granule be 94.85%；Water environment capacity is 76.39g, during nominal volume flow 10L/min, and original circulating resistance 9.05kpa, profit Separation rate is 93.06%.

Embodiment 6: material is PA6；Polyamide melt-blown nonwoven cloth material is PA6, with composite filter paper through folding, nesting etc. After processing, a length of 200mm of tubular element made, external diameter is 100mm, and the thickness of polyamide melt spraying non-woven fabrics is 1mm, The average pore size of polyamide melt spraying non-woven fabrics is 40 μm, and the average diameter of meltblown fibers silk is 10 μm, hole Rate 84.1%；The average pore size of composite filter paper is 10 μm, and thickness is 0.5mm；Filtering oil product type is diesel oil；Fold nothing Spin cloth and folded filter paper is applied to the filter effect of diesel fuel filter: the filter efficiency to 5-10 μm granule is 94.56%； Water environment capacity is 108.50g, during nominal volume flow 10L/min, and original circulating resistance 7.95kpa, oil-water separation rate It is 94%.

Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to recognize Fixed detailed description of the invention of the present utility model is only limitted to this, for this utility model person of an ordinary skill in the technical field For, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should It is considered as belonging to this utility model and is determined scope of patent protection by the claims submitted to.

Claims (10)

1. one kind for oil product filter two-stage integration composite filter element, it is characterised in that: include upper end cover, bottom end cover, Folded filter paper and polyamide filter material, described folded filter paper and polyamide filter material are all in tubular structure, and polyamide filter material is arranged In the outer ring of folded filter paper, described upper end cover and bottom end cover are fixed on two axle heads of folded filter paper and polyamide filter material, And at least having an oil outlet on upper end cover and bottom end cover, described polyamide filter material is to use polyamide material by molten Pressure spray process processes, melt-blown go out superfine fibre silk make polyamide melt spraying non-woven fabrics through mutually bonding and winding, described Polyamide melt spraying non-woven fabrics is open structure, and it is placed with filter opening.

The two-stage integration composite filter element filtered for oil product the most according to claim 1, it is characterised in that: multiple Close filter element and also include that the skeleton that is coaxially disposed with folded filter paper and polyamide filter material, described skeleton include inner protective tube and/or outer Pillar.

The two-stage integration composite filter element filtered for oil product the most according to claim 2, it is characterised in that: institute The folded filter paper stated is socketed in inner protective tube outer ring, and described polyamide filter material is socketed in the outer ring of outer pillar or folded filter paper.

The two-stage integration composite filter element filtered for oil product the most according to claim 1 and 2, it is characterised in that: The thickness of described polyamide melt spraying non-woven fabrics is 0.3-1.5mm, and the average pore size of polyamide melt spraying non-woven fabrics is 1-100 μm, the average diameter of meltblown fibers silk is 0.1-80 μm, and the porosity of filter material is more than 80%.

The two-stage integration composite filter element filtered for oil product the most according to claim 3, it is characterised in that: institute The polyamide melt spraying non-woven fabrics thickness stated is 0.3-1.0mm, and the average pore size of polyamide melt spraying non-woven fabrics is 10-40 μm, The average diameter of meltblown fibers silk is 5-50 μm, and the porosity of filter material is more than 90%.

The two-stage integration composite filter element filtered for oil product the most according to claim 1 and 2, it is characterised in that: The thickness 0.3-1.5mm of described folded filter paper, on filter paper, the average pore size of filter opening is 1-100 μm.

The two-stage integration composite filter element filtered for oil product the most according to claim 6, it is characterised in that: institute The filter paper stated is high accuracy composite filter paper.

The two-stage integration composite filter element filtered for oil product the most according to claim 1 and 2, it is characterised in that: Described polyamide is PA6 and PA66.

The two-stage integration composite filter element filtered for oil product the most according to claim 1 and 2, it is characterised in that: Described upper end cover, bottom end cover, skeleton are polyamide and make.

The two-stage integration composite filter element filtered for oil product the most according to claim 1 and 2, it is characterised in that: Described oil product is fuel oil, machine oil or hydraulic oil.