CN205569915U - Two -stage integration composite filter element's oil circulation purifier - Google Patents

Abstract

The utility model discloses a two -stage integration composite filter element's oil circulation purifier, include oil tank, hydraulic pump and filter through the pipeline hookup, the hydraulic pump pass through the pipeline and need filterable oil flow back again after the filter filters to the oil storage device in from inhaleing in the oil tank, the filter adopts two -stage integration composite filter element to filter, pillar outer lane including folded filter paper cup joints, the polyamide filter media cup joints in folded filter paper or outer pillar outer lane, the polyamide filter media adopt polyamide material pass through that melt blowing process handles and, melt spun superfine fiber silk process mutual adhesion and winding and make polyamide polyurethane elastic nonwoven, polyamide polyurethane elastic nonwoven be loose construction, the filtration pore of having arranged on it. The utility model has the characteristics of higher filter fineness, pollutant carrying capacity and water oil separating ability to resistant oil corrosion, highly reliable etc. Has, the filtration requirement of common oil has been satisfied.

Description

The oil product circulating purifying device of two-stage integration composite filter element

Technical field

This utility model belongs to environmental technology field, is specifically related to a kind of circulation filter for oil purification.

Background technology

Industrial oil mainly includes fuel oil and non-fuel oil at present, and its intermediate fuel oil includes that gasoline, diesel oil, ethanol petrol etc., the oil product of non-fuel oil include lubricating oil, hydraulic oil, quenching oil or industrial waste oil etc..Fuel oil can produce and be mixed into a large amount of impurity during producing, transporting and deposit, and the fuel oil of cleaning also can produce metal-oxide after storage a period of time, separate out the pollutant such as colloid, pitch prill matter.The fuel oil of severe contamination can cause the abrasion at the positions such as electromotor injection system and combustor and carbon distribution to generate so that fuel power equipment fuel consumption in use for some time increases, the hurried rising of exhaust emissions amount, it is therefore desirable to being cleaned processes.The most universal solution is to install oil product filter on the engine, removes impurity, colloid, asphalitine and moisture etc. in fuel oil.Clean fuel oil can improve efficiency of combustion thus saving fuel oil, reduction discharge；Also can reduce electromotor heel and toe wear, increasing service life of engine, make electromotor slow 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, service life is 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 several filter materials all can not meet the requirement that in industrial processes, oil product is filtered by equipment, causes the problems such as equipment failure rate height, low, the lost of life of operational efficiency.

During material melt-blown process is widely used in the manufacture of polypropylene material for core at present.Melt-blown is exactly that after high temperature is extruded, polymeric material is formed superfine cellosilk, and it is prepared as corresponding shape and structure, it is strong that polypropylene melt-blown filter material has water environment capacity, filtering accuracy 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 industrial oil the most all contains alkane, alkene, cycloalkane, aromatic hydrocarbon, polycyclic aromatic hydrocarbon and a small amount of sulfur, nitrogen compound etc., contact oil product can cause polypropylene articles to be dissolved corrosion for a long time, it is swelled into grume, lose filter capacity, therefore, polypropylene melt-blown filter material 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, and the advantage with conventional meltblown filter element, it is resistant to the corrosion of the oil products such as diesel oil, gasoline, ethanol simultaneously, and the Colophonium contained in oil product, water, dust, mechanical admixture etc. can be 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 ", proposes to cover one layer of hydrophobic and thin film of oleophylic in fabric web, utilizes the hydrophobic function of thin film, it is achieved the oil-water separation in oil product.This is the technical thought that current oil product filtration art is commonly used, i.e. uses hydrophobicity filter material, is separated by water, and " dredging " aqueous of filter material can be the best from fuel oil, and its effect separating water is the best.But this film producing process of problem existed is complicated, and other filtering function and index are the best, it is difficult to obtain practical popularization.

Utility model content

The utility model proposes the oil product circulating purifying device of a kind of two-stage integration composite filter element, may be used for the filtration of the oil product of fuel oil or non-fuel oil, it is achieved that the cleaning of oil product.For fuel oil, efficiency of combustion can be improved, reduce disposal of pollutants；For non-fuel oil, can in the case of not shutting down circulating filtration, promote the cleannes of non-fuel oil, extend the service life of oil product, reduce equipment fault.

Concrete technical scheme of the present utility model is as follows:

The oil product circulating purifying device of two-stage integration composite filter element, including the fuel tank coupled by pipeline, hydraulic pump, cleaner and control unit, described hydraulic pump will need the oil product filtered to be back in Fuel Tanking Unit after suction filter filtration from fuel tank by pipeline again；

Described cleaner uses two-stage integration composite filter element to filter, described composite filter element includes 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, polyamide filter material is arranged on 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 have an oil outlet on upper end cover and bottom end cover, described polyamide filter material is to use polyamide material to be processed by melt-blown process, 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, filter opening it is placed with on it.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, composite filter element also includes the skeleton being coaxially disposed with folded filter paper and polyamide filter material, and described skeleton includes inner protective tube and/or outer pillar；Described folded filter paper 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.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, the thickness of described 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, and the porosity of filter material is more than 80%.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, described 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, and the porosity of filter material is more than 90%.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, polyamide is PA6 and PA66.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, filter element also includes that the folded filter paper of tubular structure, described folded filter paper are coaxially disposed with polyamide filter material, and is fixed on the inside of polyamide filter material by skeleton.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, folded filter paper folds for high accuracy composite filter paper and forms；The average pore size of filter paper body is 1-100 μm, thickness 0.3-1.5mm.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, also it is included in pipeline the check valve arranged, is used for preventing oil product from refluxing.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, being also included in pipeline the overflow valve arranged, in pipeline, pressure opens relief function time excessive.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, oil purifier comprises heating unit, can heat fuel tank, pipeline or cleaner.

In the oil product circulating purifying device of above-mentioned two-stage integration composite filter element, oil product is fuel oil, machine oil or hydraulic oil.

The technique effect that this utility model has is as follows:

One, the utility model proposes a kind of defecator for oil purification, by the filter type of extracorporeal circulation, oil product is carried out cleaning and process.For fuel oil, the objectionable impurities (colloid that includes in fuel oil, asphalitine etc.) of in fuel oil more than 90% can be filtered, and there is stronger oil-water separating function；The cleaning of fuel oil can be ensured to greatest extent, thus reach to protect electromotor, reduce abrasion, increasing service life of engine, raising fuel utilization ratio, reduction oil consumption, improve exhaust emissions；For non-fuel oil, can in the case of not shutting down circulating filtration, promote the cleannes of non-fuel oil, extend the service life of oil product, reduce equipment fault.

Two it is known that polyamide is a kind of hydrophilic material, and according to the thinking in aforementioned background art, water wetted material is not suitable for filter material, and main cause is non-hydrophobic material, it is difficult to realize the oil-water separation in oil product.The utility model proposes and a kind of utilize meltblown polyamide material to make the scheme of filter material, filter element and filter, by controlling the structural parameters of filter material, achieve the filtration of the oil product such as fuel oil or lubricating oil, on the premise of guaranteeing that material has the corrosion of oil resistant resistance to alcohol, there is higher filtering accuracy, water environment capacity and oil and water separation capability, the program breaches tradition filter material can only select the restriction of hydrophobic material to meet oil-water separation index, the feature such as corrosion-resistant, highly reliable making full use of that polyamide material has in oil product, meets the filtering requirement of common oil product.

Three, this utility model in melt-blown process by controlling the parameters such as the temperature of filametntary output aperture, melt-blown pressure, the temperature of extruder, the temperature of manifold and meltblown beam, melt-blown fibre diameter parameter is made to reach to design requirement, simultaneously by changing reception speed and the receiving angle receiving unit in melt blown process, control the mean porosities on filter material and the aperture of filter opening, filter opening is gradually successively decreased from outer layer to internal layer, is finally reached design requirement.

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

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

Six, the check valve that this utility model is arranged in pipeline, is used for preventing oil product from refluxing；The overflow valve simultaneously arranged in pipeline, in pipeline, pressure opens relief function time excessive, it is ensured that the safety of purifier.

Accompanying drawing explanation

Fig. 1 is the principle schematic of this utility model energy oil purifier；

Fig. 2 is the structural representation of this utility model composite filter element；

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

Fig. 4 is the composite filter element cross-sectional view using collapsible polyamide melt spraying non-woven fabrics；

Fig. 5 is the structural representation of this utility model polyamide melt spraying non-woven fabrics device for melt blowing；

Fig. 6 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 polyamide melt spraying non-woven fabrics；7 sealing rings；9 oil outlets；71 air compressors；72 extruders；73 filter elements；74 manifold；75 meltblown beam；76 receive unit；77 winder units；81 air chamber；82 die head mainboards；83 heating plates；84 gas circuits；85 material roads；91 cleaners；92 overflow valves；93 hydraulic pumps；94 fuel tanks；95 pipelines；96 check valves；101 drain valves；102 heating units.

Detailed description of the invention

As shown in Figure 1, the oil product circulating purifying device of this utility model two-stage integration composite filter element includes fuel tank 94, hydraulic pump 93, cleaner 91, check valve 96 and the overflow valve 92 coupled by pipeline, described hydraulic pump 93 will need the oil product filtered by pipeline suction filter 91 filter from fuel tank 94 after be emitted into again in fuel tank 94；Check valve 96 is used for preventing oil product from refluxing, and opens relief function when overflow valve 92 pressure in pipeline is excessive；When cleaner impurity too much causes blocking or other reason to cause pressure reduction in pipeline excessive, overflow valve 92 is opened, and reduces channel interior pressure, it is to avoid system is caused damage by high pressure.

Cleaner 91 to use different filter elements according to the oil product of different viscosities scope, filter element should meet the filtering rate in range of viscosities simultaneously, i.e. system entirety oil circuit flow, thus ensure filter efficiency, repeatedly filter within finally making the granularity grade of oil product be maintained at NAS 8 grades.

Hydraulic pump 93 is by motor-driven, and motor selection should be taken into account explosive-proof grade, watt level, is suitable for the range of viscosities of oil product, is allowed to match with the parameter of electric machine.Oil pump should meet the lubricating oil being suitable for bigger range of viscosities, has over-voltage protecting function and relief function simultaneously.

In order to adapt to low temperature environment work, apparatus for purifying oil products of the present utility model comprises heating unit 102, parts in fuel tank 94, pipeline 95, two-stage integration cleaner 91 or multiple parts can be heated, can temperature oil temperature being added to specify quickly, it is ensured that purifier is without region of bypassed oil.When using in cold environment, can prevent its low temperature from solidifying, improve the mobility filtering oil product.

As shown in Figure 2, Figure 3 and Figure 4, two-stage integration composite filter element of the present utility model includes upper end cover 1, bottom end cover 2, skeleton, folded filter paper 4 and polyamide filter material 6, polyamide filter material i.e. polyamide melt spraying non-woven fabrics.Skeleton includes inner protective tube 3 and/or the outer pillar 5 being coaxially disposed, and skeleton is arranged on inside filter material for pressure-bearing and supporting role.Upper end cover 1 and bottom end cover 2 are fixed on two axle heads of folded filter paper 4 and polyamide filter material 6, and at least have an oil outlet 9 on upper end cover 1 and bottom end cover 2；Impurity is filtered through filter material body by the oil product filtered from the outer layer of filter material, then flows out through oil outlet 9, and oil outlet 9 is by sealing ring 7 and end cap UNICOM.Folded filter paper 4 is socketed in inner protective tube 3 outer ring, polyamide filter material 6 is socketed or is wrapped in folded filter paper 4 or outer pillar 5 outer ring (as shown in Figure 3), can also be socketed on the outer ring of folded filter paper 4 or outer pillar 5 (as shown in Figure 4) to increase water environment capacity after being folded by polyamide melt spraying non-woven fabrics 6.

Polyamide melt spraying non-woven fabrics uses polyamide material to process by melt-blown process and obtain, melt-blown go out superfine fibre silk bond and polyamide melt spraying non-woven fabrics is made in winding through mutual, polyamide melt spraying non-woven fabrics is open structure, it comprises and is placed with filter opening.The thickness of polyamide melt spraying non-woven fabrics is chosen as 0.3-1.5mm, and 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, and the porosity of filter material is more than 80%.It is 0.3-1.0mm as a kind of optimal way polyamide melt spraying non-woven fabrics thickness, 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, and the porosity of filter material is more than 90%, these parameters can further improve filtration index, optimizes performance.

In composite filter element, folded 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.Generally the broken number of the folding of polyamide melt spraying non-woven fabrics 6 and filter paper is according to the radial dimension design of filter element.Wherein polyamide 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 improve filtering accuracy and oil-water separation rate further.As a kind of optimal way, upper end cover, bottom end cover and skeleton all use polyamide material to make, are 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, has higher filtering accuracy, water environment capacity and oil and water separation capability.Its work principle of filter is as follows: when oil product is exported by oil outlet through filter material by the outside of filter element again, Colophonium, dust and mechanical admixture in oil product are blocked and adsorb on the polyamide melt spraying non-woven fabrics through folding, and by higher mean porosities and aperture parameters and foldable structure, improve the carrying capacity to impurity；Internal layer composite filter paper also passes through folding, its aperture is compared less, porosity is relatively low, the setting of the filter opening that non-woven fabrics gradually successively decreases so is folded to internal layer folded filter paper by outer layer, being trapped on the polyamide melt spraying non-woven fabrics of outer layer by the impurity of big particle diameter, the impurity absorption of small particle is on the composite filter paper of internal layer.Impurity is filtered by the filter material different by inside and outside two-stage, 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 hydrophilic oleophobic material, its material itself has the hydrophilic of excellence, the cellosilk of melt-blown formation is very thin, has been internally formed numerous capillary holes in winding process.Result of study shows, in oil product, overwhelming majority water is to exist with the little water droplet of free state, and the aperture in the capillary hole that either filament diameter is still formed is respectively less than the diameter of most little water droplet in filter material of the present utility model, see in microstructure, the surface tension of oil product drop is much smaller than water droplet, so utilize surface tension that fine liquid particles is bigger and by mutual affine cohesion with water wetted material during capillary hole, it is aggregated into free water after making the emulsified water breakdown of emulsion in fuel oil, free water the most mutually collides convergence for larger-diameter water droplet, sedimentation collects in cleaner bottom secction under gravity, finally discharged by blowoff valve.

nullFig. 5 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、Receive unit 76，Air compressor 71 provides high-pressure air source for extruder 72，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，Fused raw material is extruded through the aperture of meltblown beam 75，And under high-temperature high-speed airflow effect melt-blown go out superfine fibre silk to receive unit 76，Inter-adhesive between meltblown fibers receiving on unit 76，Receive and be provided with reception net on unit 76，Form polyamide melt spraying non-woven fabrics，Different fibre density is obtained by adjusting the parameter receiving unit、Wall thickness and the differentiated aperture value of ectonexine，Winder unit 77 uses and automatically batches，Polyamide smelting spray adhesive-bonded fabric coil is packed.

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

Meltblown beam is illustrated as shown in Figure 6, supply and feed two parts it are divided into inside it, that expects road 85 both above and below has gas circuit 84, and between gas circuit and material road, have the angle of 60 °, 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 the molten polymer expecting road 85 extrusion quickly to form fiber.Nylon meltblown fibers is received unit and receives formation polyamide melt spraying non-woven fabrics, different fibre density, wall thickness and the differentiated aperture value of ectonexine is obtained by adjusting the parameter receiving unit, winder 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 hours；

[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 DEG C.Polyamide raw materials is heated in an extruder after melting and is delivered to filter element, is assigned to manifold after described filter element filters impurity；

[3] meltblown beam is forced into 0.05-0.07MPa, and temperature rises to 240-300 DEG C, and fused raw material is extruded through the aperture of meltblown beam, 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, remain to keep higher temperature after becoming net due to fibre deposition, meltblown fibers cloth is become, by changing the reception speed and receiving angle receiving unit, it is achieved the control of filter material different pore size size structure so that inter-adhesive between fiber；

[5] polyamide melt spraying non-woven fabrics is carried out rolling packing, after being cut to different size as required and folding, form 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 polyamide section the master batch being mixed into, described master batch includes one or more in filler, coupling agent or dispersant, wherein filler includes calcium carbonate, Pulvis Talci etc., coupling agent such as carbonic ester silane etc., dispersant such as Tissuemat E, stearic acid salt etc..Wherein the particle diameter of master batch is 1-3m, and polyamide section and the ratio adding master batch are 1:0.03.

According to the filter element universal test method in cleaner industry, being detected the parameter of filter element, concrete detection method and condition are as follows:

(1) pollutant holding capability:

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

(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 the fuel filter part 1 of ISO 4020-2001 road vehicle Diesel engine: 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 the appraisal procedure of international standard ISO TS 16,332 2006 diesel engine fuel oil cleaner oil-water separation usefulness or according to SAE J 1839 (97) coarse microdroplet water/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 filtering accuracy and filter efficiency, refer to international standard ISO 19438:2003 automobile engine diesel fuel filter and the assay method particle counting of gasoline filter filtering efficiency and impurity storage capacity or the diesel fuel filter of the domestic combustion engine of ISO/TR 13353-2003, 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 when entering hydrargyrum volume as external pressure function, i.e. available enters the hydrargyrum volume evacuated in sample under external force, thus records the pore-size distribution of sample.Mensuration mode can use continuous supercharging mode, it is possible to after using step-by-step pressurization mode, i.e. certain interval of time to reach balance, then measures 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, the a length of 200mm of tubular element made, external diameter is 100mm, the thickness of polyamide melt spraying non-woven fabrics is 0.3mm, the average pore size of polyamide 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；Folding non-woven fabrics and folded filter paper are applied to the filter effect of gasoline filter: the filter efficiency to 5-10 μm granule is 98.12%；Water environment capacity is 60.85g, and 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, the a length of 200mm of tubular element made, external diameter is 100mm, and the thickness of polyamide melt spraying non-woven fabrics is 1.5mm, and the average pore size of polyamide melt spraying non-woven fabrics is 100 μm, 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；Folding non-woven fabrics and folded filter paper are 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, and during nominal volume flow 10L/min, original circulating resistance 12.55kpa, oil-water separation rate is 91.98%.

Embodiment 3: polyamide melt-blown nonwoven cloth material is PA66, with composite filter paper after fold, nested etc. is processed, the a length of 200mm of tubular element made, external diameter is 100mm, 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: the filter efficiency to 5-10 μm granule is 92.75%；Water environment capacity is 102.33g, and during nominal volume flow 10L/min, original circulating resistance 12.05kpa, oil-water separation rate is 91.23%.

Embodiment 4: polyamide melt-blown nonwoven cloth material is PA66, with composite filter paper after fold, nested etc. is processed, the a length of 200mm of tubular element made, external diameter is 100mm, 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；Folding non-woven fabrics and folded filter paper are applied to the filter effect of gasoline filter: the filter efficiency to 5-10 μm granule is 98.91%；Water environment capacity is 87.44g, and during nominal volume flow 10L/min, original circulating resistance 8.89kpa, oil-water separation rate is 95.55%.

Embodiment 5: polyamide melt-blown nonwoven cloth material is PA66, with composite filter paper after fold, nested etc. is processed, the a length of 200mm of tubular element made, external diameter is 100mm, 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 μm, 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 non-woven fabrics and folded filter paper are applied to the filter effect of gasoline filter: the filter efficiency to 5-10 μm granule is 94.85%；Water environment capacity is 76.39g, and during nominal volume flow 10L/min, original circulating resistance 9.05kpa, oil-water separation rate is 93.06%.

Embodiment 6: polyamide melt-blown nonwoven cloth material is PA6, with composite filter paper after fold, nested etc. is processed, the a length of 200mm of tubular element made, external diameter is 100mm, 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, porosity 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；Folding non-woven fabrics and folded filter paper are 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, and during nominal volume flow 10L/min, original circulating resistance 7.95kpa, oil-water separation rate is 94%.

Above content is to combine concrete preferred implementation further detailed description of the utility model; it cannot be assumed that 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; without departing from the concept of the premise utility; some simple deduction or replace can also be made, all should be considered as belonging to this utility model and be determined scope of patent protection by the claims submitted to.

Claims (10)

1. the oil product circulating purifying device of two-stage integration composite filter element, it is characterized in that: include fuel tank, hydraulic pump and the cleaner coupled by pipeline, described hydraulic pump will need the oil product filtered to be back in Fuel Tanking Unit after suction filter filtration from fuel tank by pipeline again；

Described cleaner uses two-stage integration composite filter element to filter, described composite filter element includes 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, polyamide filter material is arranged on 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 have an oil outlet on upper end cover and bottom end cover, described polyamide filter material is to use polyamide material to be processed by melt-blown process, 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, filter opening it is placed with on it.

The oil product circulating purifying device of two-stage integration composite filter element the most according to claim 1, it is characterised in that: composite filter element also includes the skeleton being coaxially disposed with folded filter paper and polyamide filter material, and described skeleton includes inner protective tube and/or outer pillar；Described folded filter paper 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 oil product circulating purifying device of two-stage integration composite filter element the most according to claim 1 and 2, it is characterized in that: the thickness of described 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, the average diameter of meltblown fibers silk is 0.1-80 μm, and the porosity of filter material is more than 80%.

The oil product circulating purifying device of two-stage integration composite filter element the most according to claim 3, it is characterized in that: described 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, the average diameter of meltblown fibers silk is 5-50 μm, and the porosity of filter material is more than 90%.

5. according to the oil product circulating purifying device of claim 1-3 one of arbitrarily described two-stage integration composite filter element, it is characterised in that: polyamide is PA6 and PA66.

6. according to the oil product circulating purifying device of claim 1-3 one of arbitrarily described two-stage integration composite filter element, it is characterised in that: described folded filter paper folds for high accuracy composite filter paper and forms；The average pore size of filter paper body is 1-100 μm, thickness 0.3-1.5mm.

7. according to the oil product circulating purifying device of claim 1-3 one of arbitrarily described two-stage integration composite filter element, it is characterised in that: also it is included in pipeline the check valve arranged, is used for preventing oil product from refluxing.

8. according to the oil product circulating purifying device of claim 1-3 one of arbitrarily described two-stage integration composite filter element, it is characterised in that: being also included in pipeline the overflow valve arranged, in pipeline, pressure opens relief function time excessive.

9. according to the oil product circulating purifying device of claim 1-3 one of arbitrarily described two-stage integration composite filter element, it is characterised in that: described oil purifier comprises heating unit, can heat fuel tank, pipeline or cleaner.

10. according to the oil product circulating purifying device of claim 1-3 one of arbitrarily described two-stage integration composite filter element, it is characterised in that: described oil product is fuel oil, machine oil or hydraulic oil.