CN105715627A - Method and device for preventing oil seepage and oil leakage of hydraulic system - Google Patents
Method and device for preventing oil seepage and oil leakage of hydraulic system Download PDFInfo
- Publication number
- CN105715627A CN105715627A CN201610159165.2A CN201610159165A CN105715627A CN 105715627 A CN105715627 A CN 105715627A CN 201610159165 A CN201610159165 A CN 201610159165A CN 105715627 A CN105715627 A CN 105715627A
- Authority
- CN
- China
- Prior art keywords
- oil
- hydraulic system
- hydraulic
- filter
- fuel tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a method and device for preventing oil seepage and oil leakage of a hydraulic system. A filter device is arranged at the outer portion of an oil tank of the hydraulic system and comprises a hydraulic pump, a filtering assembly, an oil taking pipeline and an oil returning pipeline. Hydraulic oil in the hydraulic system is sucked from the oil tank of the hydraulic system through the hydraulic pump, and after being filtered through the filtering assembly, the hydraulic oil is discharged to the oil tank through the oil returning pipeline. According to the method and device for preventing oil seepage and oil leakage of the hydraulic system, the filter system is arranged outside the hydraulic system, circular filtering can be conducted without shutdown so as to improve the cleanliness of an oil product in the hydraulic system, and the phenomenon that due to the fact that a sealing piece is polluted and corroded by the hydraulic oil and fails, oil seeps and leaks is reduced.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of method and apparatus reducing hydraulic system seepage.
Background technology
Hydraulic system has a wide range of applications at field of industrial production, and its Main Function is rotation or reciprocating motion that the pressure of hydraulic oil becomes mechanism.Hydraulic system includes dynamical element, executive component, control element, auxiliary element and hydraulic oil.Wherein the effect of dynamical element (such as hydraulic pump) is the pressure energy that the mechanical energy of prime mover converts to liquid；The effect of executive component (such as hydraulic cylinder and hydraulic motor) is that the pressure of liquid can be converted to mechanical energy, drives load to do straight reciprocating motion or gyration.Control element (i.e. various hydraulic valves) control in hydraulic system and regulate the pressure of liquid, flow and direction.Auxiliary element includes fuel tank, oil filter, oil pipe and pipe joint, sealing ring, Pressure gauge, oil level oil thermometer etc..Wherein hydraulic oil is the working media transmitting energy in hydraulic system, has several big classes such as various mineral oil, emulsion and Synthetic Hydraulic Oil.
In large-scale hydraulic system, the hydraulic oil of ton weight is become to be contained in fuel tank, for realizing rotation or the reciprocating motion of mechanism.The quality of one hydraulic system depends not only on the reasonability of system design and the quality of system element performance, additionally depends on the pollution protection of system and processes, and systemic contamination directly affects the reliability of hydraulic work system and the service life of element.According to statistics, hydraulic system fault both domestic and external nearly 70% causes owing to polluting.Usual hydraulic system pollution has from external contaminants, dust in air and gravel, and from the pollutant within hydraulic system, such as the abrasion of element, tube metal granule, corrosion thing, and the oxidation etc. of hydraulic oil, these all have a strong impact on the hydraulic system life-span, cause abuse, be greatly shortened service life of equipment time serious.And the disposable addition hydraulic oil adopted in existing hydraulic system, after using the fixed cycle, the mode that property is all changed oil again can increase production cost.
When hydraulic work system, arrange between Hydraulic Elements and pipeline just like potted components such as silicone rubber pads, long time running due to mechanism, and inner member bears higher pressure, the sealing property of potted component is proposed higher requirement, and owing to mechanism's bulky complex causes that potted component replacing difficulty is bigger.Existing mainly have seal element material to be modified (such as Chinese patent CN201310246882.5 for the method sealing the leakage of anti-oil product, a kind of oil resistant rubber sealing member material), sealing device is improved (such as Chinese patent cn201110156013.4, contact dynamic sealing method and dished sealing washer dynamic sealing device), and increase the methods such as multi-sealed element and guarantee the sealing property of hydraulic system, but this scheme all adds cost and the structural complexity of system, and do not find the potted component reason that seal failure and oil product are revealed in hydraulic system long-term work environment, often poor effect.
Summary of the invention
The present invention proposes a kind of method and apparatus preventing hydraulic system oil leak; by the outer circulation of hydraulic oil in hydraulic system is filtered; improve the cleanliness factor of the internal oil product of hydraulic system; reduce the hydraulic oil corrosion to potted component, extend the potted component life-span, reduce the hydraulic oil permeability that in hydraulic system, potted component pollution corrosion causes and reveal; and can in not shutdown situation circulating filtration; promote the cleannes of non-fuel oil, extend the service life of oil product, reduce equipment fault.
The oil product filter of domestic more than 98% uses wood pulp filter paper, high accuracy composite filter paper or wire netting to be filter material at present, to reach to remove the purpose of impurity and moisture in oil product.The circulating resistance of high accuracy filter paper is big, 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.
Current material melt-blown process is widely used in the manufacture of polypropylene material for core.Melt-blown is exactly that after high temperature is extruded, polymeric material is formed superfine cellosilk, and prepare into 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 generally all contains alkane, alkene, cycloalkane, aromatic hydrocarbon, polycyclic aromatic hydrocarbon and a small amount of sulfur, nitrogen compound etc., contact oil product can cause that polypropylene articles is 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.
It is known that polyamide is a kind of hydrophilic material, according to existing bibliographical information, 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 present invention proposes and a kind of utilizes meltblown polyamide material to make the scheme of filter material, filter element and filter, by controlling the structural parameters of filter material, achieve fuel oil or the filtration of hydraulic pressure wet goods oil product, under guaranteeing the premise that material has the resistance to alcohol corrosion of oil resistant, 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.
The concrete technical scheme of the present invention is as follows:
A kind of device preventing hydraulic system oil leak, including the defecator being arranged on outside the fuel tank of hydraulic system, described defecator includes hydraulic pump, filtering assembly, takes oil pipe line and return line, described takes oil pipe line and return line is arranged on fuel tank shell；Hydraulic oil in hydraulic system is sucked by described hydraulic pump from the fuel tank of hydraulic system, again through return line discharge to fuel tank after filtering component filters, to improve the cleanliness factor of the internal oil product of hydraulic system, decrease in hydraulic system owing to sealing member is contaminated, oil leak phenomenon that corrosion and losing efficacy causes occurs.
In the above-mentioned device preventing hydraulic system oil leak, filtering assembly is the fine straining unit adopting polyamide melt-blown filter, and described fine straining unit is arranged between the outlet of hydraulic pump and fuel tank.
In the above-mentioned device preventing hydraulic system oil leak, filtering assembly includes coarse filtration unit and adopts the fine straining unit of polyamide melt-blown filter, described coarse filtration unit is arranged between fuel tank and hydraulic pressure pump intake, and described fine straining unit is arranged between the outlet of hydraulic pump and fuel tank.
In the above-mentioned device preventing hydraulic system oil leak, the filter material of polyamide melt-blown filter is for adopting polyamide material to be processed by melt-blown process, and the superfine fibre silk of ejection is through bonding mutually and is wound around the hollow cylindrical structure made；Described filter material is open structure, forms the filter opening of different pore size；The size distribution mode of described filter opening is for successively decrease gradually successively along tubular structure outer layer to internal layer pore size.
In the above-mentioned device preventing hydraulic system oil leak, filter material thickness is 0.5-30mm, and wherein the average pore size of cylinder portion outer layer filter opening is 10-100 μm, and the average pore size of cylinder portion internal layer filter opening is 1-50 μm, the average diameter of meltblown fibers silk is 0.1-80 μm, and the porosity of filter material is more than 80%.
In the above-mentioned device preventing hydraulic system oil leak, filter material thickness is 5-20mm, and the average pore size of cylinder portion outer layer is 20-40 μm, and the average pore size of cylinder portion internal layer is 10-20 μm, the average diameter range of meltblown fibers silk is 5-50 μm, and the porosity of filter material is more than 90%.
A kind of method preventing hydraulic system oil leak, it is characterized in that installation defecator outside the fuel tank of described hydraulic system, described defecator includes hydraulic pump, filtering assembly, takes oil pipe line and return line, hydraulic oil in hydraulic system is sucked by described hydraulic pump from the fuel tank of hydraulic system, again through return line discharge to fuel tank after filtering component filters, to improve the cleanliness factor of the internal oil product of hydraulic system, reduce in hydraulic system owing to sealing member is contaminated, oil leak phenomenon that corrosion and losing efficacy causes occurs.
In the above-mentioned method preventing hydraulic system oil leak, filtering assembly includes the fine straining unit adopting polyamide melt-blown filter, and described fine straining unit is arranged between the outlet of hydraulic pump and fuel tank.
In the above-mentioned method preventing hydraulic system oil leak, the filter material of polyamide melt-blown filter is for adopting polyamide material to be processed by melt-blown process, and the superfine fibre silk of ejection is through bonding mutually and is wound around the hollow cylindrical structure made；Described filter material is open structure, forms the filter opening of different pore size；The size distribution mode of described filter opening is for successively decrease gradually successively along tubular structure outer layer to internal layer pore size.
In the above-mentioned method preventing hydraulic system oil leak, filter material thickness is 0.5-30mm, and wherein the average pore size of cylinder portion outer layer filter opening is 10-100 μm, and the average pore size of cylinder portion internal layer filter opening is 1-50 μm, the average diameter of meltblown fibers silk is 0.1-80 μm, and the porosity of filter material is more than 80%.
The technique effect that the present invention has is as follows:
One, inventor is through long-term research and experiment, propose a kind of method and apparatus preventing hydraulic system oil leak, namely by the outer loop of hydraulic oil in hydraulic system is filtered, improve the cleanliness factor of the internal oil product of hydraulic system, thus reducing the hydraulic oil corrosion to potted component, extend the life-span of potted component, reduce the oil leak phenomenon caused due to seal failure in hydraulic system and occur.
Two, filtration system is arranged on the outside of hydraulic system by the present invention, and can in not shutdown situation circulating filtration, promote the cleannes of non-fuel oil, extend the service life of oil product, reduce equipment fault.
Three, the present invention adopts the scheme of double-stage filtering; wherein coarse filtration unit selects the cleaner that filtering accuracy is relatively low, mainly to filter larger particles impurity, makes cleaner have bigger water environment capacity; oil pump is played a protective role, it is prevented that oil product is crossed dirty to the abrasion of mechanical part in oil pump simultaneously.The fine straining unit filter element of choosing according to the range of viscosities of oil product, different range of viscosities uses different filter elements, and the selection of filter element should meet the filtering rate in range of viscosities, i.e. system entirety oil circuit flow, it is ensured that the cycle efficieny of system.Two-stage combines and makes system can be used for big flow to process continuously, and detergent power is strong, and dewatering efficiency is high, repeatedly filters within finally making the granularity grade of oil product be maintained at NAS8 level.
Four, present invention return line between fine straining unit and hydraulic pump is provided with pressure switch, by the pressure monitoring in oil circuit, prompting changing filter element in the way of flashing indicator light, control unit control oil pump overvoltage power-off simultaneously, quit work.
Five, the filtration unit operations of the present invention is simple, easy to use, and band is free to be controlled and Stress control.Within the working hour that single-chip microcomputer time switch sets, oil product is carried out automatic fitration by start according to set time, shutdown, does not affect the normal operation of personnel and equipment.Motor automatic stop when internal pressure is beyond the maximal pressure force value set, it is possible to equipment is played a protective role.
Six, the present invention 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 designing requirement, simultaneously by changing reception speed and the receiving angle receiving unit in melt blown process, control the aperture of the mean porosities on filter material and filter opening, filter opening is successively decreased gradually from outer layer to internal layer, is finally reached designing requirement.
Accompanying drawing explanation
Fig. 1 is the principle of device schematic diagram that the present invention prevents hydraulic system oil leak；
Fig. 2 is the principle schematic of the apparatus for purifying oil products that single-stage of the present invention filters；
Fig. 3 is the principle schematic of the apparatus for purifying oil products of double-stage filtering of the present invention；
Fig. 4 is the structural representation of melt-blown filter of the present invention；
Fig. 5 is the structural representation of device for melt blowing of the present invention；
Fig. 6 is meltblown beam operation principle schematic diagram of the present invention；
Accompanying drawing labelling is as follows: 40 display lamps；41 motor；42 hydraulic pumps；43 pressure switches；44 check valves；45 coarse filtration unit；46 fine straining unit；47 take oil pipe line；48 fuel tanks；49 return lines；52 defecators；71 air compressors；72 extruders；73 filter elements；74 manifold；75 meltblown beam；76 receive unit；77 cutter units；81 air chamber；82 die head mainboards；83 hot plates；84 gas circuits；85 material roads；91 upper end covers；92 bottom end covers；93 melt-blown filter materials；94 oil-outs；95 melt-blown filter material internal layers；96 melt-blown filter material outer layers；97 skeletons；101 valves；102 Hydraulic power units；103 diverters；104 pistons；105 hydraulic oil pipelines；106 workbench.
Detailed description of the invention
As it is shown in figure 1, for hydraulic cylinder works platform, including fuel tank 48, Hydraulic power units 102, hydraulic oil pipeline 105, piston 104, diverter 103, workbench 106 and valve 101 etc..Hydraulic power units 102 includes such as hydraulic pump etc., and hydraulic oil is delivered to diverter 103 along hydraulic oil pipeline 105 by it from fuel tank 48, then drives piston 104 to move back and forth, thus driving the reciprocating motion of workbench 106.
During hydraulic work system, for bearing bigger oil pressure, the sealing of piston 104, diverter 103, Hydraulic power units 102 etc. is proposed higher requirement, such as when the connection of hydraulic oil pipeline 105 and valve 101, need to arrange the potted components such as silicone rubber seal gasket, to keep pressure in pipeline, it is achieved the driving of workbench.
The harmful substances such as the water that in use can be entered due to hydraulic oil, mechanical admixture, dust pollute, and oil oxidation etc., cause oil pollution.Inventor is through studying for a long period of time and testing discovery, when in hydraulic oil, impurity content is too high, along with hydraulic oil operating in pipeline and dynamical element, executive component, can cause hydraulic system abrasion aggravation, oil temperature rising, oil pressure increases, parts shake aggravation, thus causing sealing member deformation and loosening, fit clearance becomes big；Sulfur in impurity and moisture generation chemical reaction generation acidic materials cause sealing member corrosion impaired simultaneously, make its rapid failure, have influence on the sealing effectiveness of hydraulic system, cause hydraulic oil seepage, therefore simple by potted component being carried out material modification or increasing the overlapping quantity of potted component and can not tackle the problem at its root.
The present invention is by being provided with defecator in the outside of fuel tank, and defecator includes hydraulic pump, filtering assembly, takes oil pipe line and return line, takes oil pipe line and return line is arranged on fuel tank shell；Hydraulic oil in hydraulic system is sucked by hydraulic pump from the fuel tank of hydraulic system, again through return line discharge to fuel tank after filtering component filters, to improve the cleanliness factor of the internal oil product of hydraulic system, reduce owing to the permeability of the impaired rear poorly sealed hydraulic oil caused of potted component is revealed.
Fig. 2 gives the purifier schematic diagram that single-stage of the present invention filters, purifier in figure includes hydraulic pump 42, fine straining unit 46, takes oil pipe line 47, return line 49 and control unit, the oil product filtered will be needed to suck in the oil product discharge after filtration to fuel tank 48 from fuel tank 48 again through return line 49 by taking oil pipe line 47, fine straining unit 46 is arranged between the outlet of hydraulic pump 42 and fuel tank 48, is wherein provided with check valve 44 on oil pipe line 47 taking.
Optimal way as a kind of double-stage filtering, as shown in Figure 3, apparatus for purifying oil products of the present invention includes hydraulic pump 42, coarse filtration unit 45, fine straining unit 46, takes oil pipe line 47, return line 49 and control unit, the oil product filtered will be needed to suck in the oil product discharge after filtration to fuel tank 48 from fuel tank 48 again through return line 49 by taking oil pipe line 47, described coarse filtration unit 45 is arranged between the suction inlet of fuel tank 48 and hydraulic pump 42, fine straining unit 46 is arranged between the outlet of hydraulic pump 42 and fuel tank 48, is wherein provided with check valve 44 on oil pipe line 47 taking.
Being provided with pressure switch 43 on return line 49 between fine straining unit 46 and hydraulic pump 42, fine straining unit top is provided with display lamp 40, carries out alarm when pressure overload or device break down.By to the pressure monitoring in oil circuit, prompting changing filter element in the way of flashing indicator light, control unit control oil pump overvoltage power-off simultaneously, quit work, it is possible to equipment is played a protective role.
Hydraulic pump 42 is driven by motor 41, and motor selection should be taken into account explosive-proof grade, watt level, is suitable for the range of viscosities of oil product, so as to match with the parameter of electric machine.Oil pump should meet the hydraulic oil being suitable for bigger range of viscosities, has over-voltage protecting function and relief function simultaneously.
Coarse filtration unit 45 selects the cleaner that filtering accuracy is relatively low, and mainly to filter larger particles impurity, protection oil pump is principle, and fine straining unit 46 then selects polyamide melt-blown filter, to guarantee that device can have higher filtering accuracy.If device is for non-fuel filter, it is contemplated that the viscosity of oil product in filter element selection.The oil product of different viscosities scope uses different filter elements, and filter element should meet the filtering rate in range of viscosities simultaneously, i.e. system entirety oil circuit flow, thus ensureing filter efficiency.Two-stage combines and processes continuously so that device can be used for big flow, and detergent power is strong, and dewatering efficiency is high, repeatedly filters within finally making the granularity grade of oil product be maintained at NAS8 level.
As shown in Figure 4, the filter element of the present invention includes filter material 93, upper end cover 91 and bottom end cover 92, upper end cover 91 and bottom end cover 92 and is connected in the two ends of polyamide filter material 93, and skeleton is then arranged on inside filter material for pressure-bearing.Upper end cover 91 has oil outlet 94, and bottom end cover 92 is then sealed in the bottom of filter material 93.Impurity is filtered through filter material body by filtered oil product from the outer layer of filter material, flows out then through oil outlet 94.Filter material adopts polyamide material to be processed by melt-blown process, and the superfine fibre silk of ejection is through bonding mutually and is wound around the hollow cylindrical structure made；Filter material is open structure, forms the filter opening of different pore size；The size distribution mode of filter opening is for successively decrease gradually successively along tubular structure outer layer to internal layer pore size.Wherein filter material thickness is 0.5-30mm, and wherein the average pore size of cylinder portion outer layer filter opening is 10-100 μm, and the average pore size of cylinder portion internal layer filter opening is 1-50 μm, and the average diameter of meltblown fibers silk is 0.1-80 μm, and the porosity of filter material is more than 80%.
The present invention is by controlling the structural parameters of filter material, it is achieved that the filtration of fuel oil or hydraulic pressure wet goods oil product, has higher filtering accuracy, water environment capacity and oil and water separation capability.As a kind of optimal way, filter material thickness is 5-20mm, and the average pore size of cylinder portion outer layer is 20-40 μm, the average pore size of cylinder portion internal layer is 10-20 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.
Work principle of filter of the present invention is as follows: when oil product is exported by oil outlet through filter material by the outside of filter element again, Colophonium in oil product, dust and mechanical admixture are blocked and are adsorbed on filter material, and by higher mean porosities parameter, improve the carrying capacity to impurity；The setting of the filter opening successively decreased gradually to internal layer by outer layer in addition, stays the outer layer of filter material by the impurity of big particle diameter, and the impurity absorption of little particle diameter is in the inside of filter material.Its mechanism with high oil water separation function is described below:
Polyamide melt-blown filter materials is originally as hydrophilic oleophobic material, and its material itself has the hydrophilic of excellence, and the cellosilk of melt-blown formation is very thin, has been internally formed numerous capillary holes in the process being wound hollow tube-shape filter material.Result of study shows, in oil product, overwhelming majority water is to exist with the little water droplet of free state, and no matter the filter material of the present invention is the aperture in the capillary hole of filament diameter or the formation diameter that is respectively less than most little water droplet, microstructure is seen, the surface tension of oil product drop is much smaller than water droplet, so utilize surface tension that fine liquid particles is bigger and during by capillary hole with the mutual affine cohesion of water wetted material, it is aggregated into free water after making the emulsified water breakdown of emulsion in fuel oil, free water collides convergence mutually for larger-diameter water droplet, sedimentation collects in cleaner bottom secction under gravity, finally discharged by blowoff valve.
Fig. 5 gives the manufacture device of polyamide filter material of the present invention, including air compressor 71, extruder 72, filter element 73, manifold 74, meltblown beam 75, receive unit 76 and cutter unit 77, air compressor 71 provides high-pressure air source for extruder 72, after filter element 73 is by contaminant filter, manifold 74 is entered after heating raw materials that extruder 72 adds is melted, 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, receive unit and cellosilk is rolled into tubular, receive unit 76 and be connected to cutter unit 77, realize the ends cutting of filter material.Receiving and be provided with rotating shaft on unit 76, meltblown fibers is repeatedly wound around on the rotary shaft and is formed long tubular element by traction continuously.Obtaining different fibre density, wall thickness and the differentiated aperture value of ectonexine by adjusting the parameter receiving unit, then cut unit 77 cuts off the melt-blown filter forming suitable dimension.
The effect of extruder is the extruding of solid high polymer, aerofluxus, melted, mixing homogenizing, quantitatively exports high polymer melt under stationary temperature and pressure.Filter element is used to the device that molten polymer is filtered, and has a circular groove, for placement of multiple layers drainage screen, it is achieved the contaminant filter in material inside it.The effect of manifold is the melted chain rupture promoting polymer, and the flow path that material is in manifold is equal, absorbs heat energy equal, and finally measured pump continuous and quantitative 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 hot plate 83 between material road 85 and gas circuit 84, when two strands of airflow collisions form turbulent flow, promotes the molten polymer of material road 85 extrusion quickly to form fiber.Nylon meltblown fibers is received unit and receives the formation melt-blown filter material of tubular nylon, adjusts the reception speed receiving unit and makes the melt-blown tubular filter material of nylon depart from it；Cutter unit includes the buncher and the cutting knife that automatically control, and filter material is cut by the length according to setting.
The present invention preferably has the equipment of both-end meltblown beam, say, that two sides of manifold 74 are provided with meltblown beam 75 and the reception unit 76 matched and cutter unit 77, and two meltblown beam automatically control respectively, substantially increase production efficiency.
The manufacturing step of the polyamide filter material of the present invention 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 out impurities；
[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] meltblown fibers is received unit and is rolled into cylindric melt-blown filter material, and by changing the reception speed and receiving angle receiving unit, ensures the porosity parameter of filter material, and successively decrease from the outer to the inner gradually in the aperture realizing filter opening；
[5] filter material is cut into the tubular filter material of appropriate length by cutter unit.
Wherein when extruder pressure adjust 2MPa, fused raw material can be extruded into 0.1-80 μm thread.Receive device and move horizontally the reception long tubular element of formation, and size cuts off molding as requested.
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.
The apparatus for purifying oil products of the present invention selects automatic fitration and manual filtration operation mode by control unit；During Non-follow control, can start at any time, stop at any time filtering；When automatically controlling, beginning filtration time, filter cycle, filtration dwell time, Automatic Cycle filtration etc. can be set.Only need to starting a press button in using, can realize Automatic Control, including automatic oil-feed, fuel-displaced, heating etc., people can disembark, when maloperation occurs, when oil pressure is too high, and machine autostop, warning, stop potential safety hazard.
In order to adapt to low temperature environment work, the apparatus for purifying oil products of the present invention comprises heating unit, fuel tank 48, the parts taken in oil pipe line 47, return line 49, coarse filtration unit 45 and fine straining unit 46 or multiple parts can be heated, quickly oil temperature can be added to the temperature specified, it is ensured that purifier is without region of bypassed oil.
The filter element of coarse filtration unit 45 of the present invention and fine straining unit 46, it is possible to absorption emulsified water and Free water, it is also possible to the impurity such as colloid in absorption and oil purification, solid particle.Owing to adopting two-stage double medium filtration mode, its multistage integrated purification achieves filter efficiency and reaches more than 99%, promotes more than a NAS rank to filtering an after stain grade at oil product, repeatedly filters within finally making oil product granularity grade be maintained at NAS8 level.
Specific embodiment:
Certain 3000 tons of steel timber Hydraulic Seals adopts politef to coordinate hardness and design when not installing defecator, and 3 months needs of every continuous operation change hydraulic oil once, are replaced by potted component every 6 months needs simultaneously, otherwise produce to reveal；After being mounted with External Circulation Filtration Apparatus, within 2 years, do not change hydraulic oil and potted component, working properly, without revealing.
Certain 500 tons forging hydraulic systems, sealing member adopts O-shaped rubber ring.6 months needs of every continuous operation change hydraulic oil once, are replaced by potted component every 6 months needs simultaneously, otherwise produce to reveal；After being mounted with External Circulation Filtration Apparatus, within 2 years, do not change hydraulic oil and potted component, working properly, without revealing.
Certain 3000 tons stretch hydraulic system, and sealing member adopts politef to coordinate hardness and design.12 months needs of every continuous operation change hydraulic oil once, are replaced by potted component every 12 months needs simultaneously, otherwise produce to reveal；After being mounted with External Circulation Filtration Apparatus, within 2 years, do not change hydraulic oil and potted component, working properly, without revealing.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; it cannot be assumed that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to the present invention and be determined scope of patent protection by submitted claims.
Claims (10)
1. the device preventing hydraulic system oil leak, it is characterized in that: include being arranged on the defecator outside fuel tank of hydraulic system, described defecator includes hydraulic pump, filtering assembly, takes oil pipe line and return line, described takes oil pipe line and return line is arranged on fuel tank shell；Hydraulic oil in hydraulic system is sucked by described hydraulic pump from the fuel tank of hydraulic system, again through return line discharge to fuel tank after filtering component filters, to improve the cleanliness factor of the internal oil product of hydraulic system, reduce in hydraulic system owing to the sealing member oil leak phenomenon caused that lost efficacy by hydraulic oil pollution, corrosion occurs.
2. a kind of device preventing hydraulic system oil leak according to claim 1, it is characterised in that: described filtering assembly is the fine straining unit adopting polyamide melt-blown filter, and described fine straining unit is arranged between the outlet of hydraulic pump and fuel tank.
3. a kind of device preventing hydraulic system oil leak according to claim 1, it is characterized in that: described filtering assembly includes coarse filtration unit and adopts the fine straining unit of polyamide melt-blown filter, described coarse filtration unit is arranged between fuel tank and hydraulic pressure pump intake, and described fine straining unit is arranged between the outlet of hydraulic pump and fuel tank.
4. a kind of device preventing hydraulic system oil leak according to Claims 2 or 3, it is characterised in that: the filter material of described polyamide melt-blown filter be adopt polyamide material to be processed by melt-blown process, melt-blown go out superfine fibre silk through mutually bonding and be wound around the hollow cylindrical structure made；Described filter material is the open structure comprising some different pore size filter openings；The size distribution mode of described filter opening is for successively decrease gradually successively along tubular structure outer layer to internal layer pore size.
5. a kind of device preventing hydraulic system oil leak according to claim 4, it is characterized in that: described filter material thickness is 0.5-30mm, wherein the average pore size of cylinder portion outer layer filter opening is 10-100 μm, the average pore size of cylinder portion internal layer filter opening is 1-50 μm, the average diameter of meltblown fibers silk is 0.1-80 μm, and the porosity of filter material is more than 80%.
6. a kind of device preventing hydraulic system oil leak according to claim 5, it is characterized in that: described filter material thickness is 5-20mm, the average pore size of cylinder portion outer layer is 20-40 μm, the average pore size of cylinder portion internal layer is 10-20 μm, the average diameter range of meltblown fibers silk is 5-50 μm, and the porosity of filter material is more than 90%.
7. the method preventing hydraulic system oil leak, it is characterized in that: defecator is installed outside the fuel tank of described hydraulic system, described defecator includes hydraulic pump, filtering assembly, takes oil pipe line and return line, hydraulic oil in hydraulic system is sucked by described hydraulic pump from the fuel tank of hydraulic system, again through return line discharge to fuel tank after filtering component filters, to improve the cleanliness factor of the internal oil product of hydraulic system, reduce in hydraulic system owing to the sealing member oil leak phenomenon caused that lost efficacy by hydraulic oil pollution, corrosion occurs.
8. a kind of method preventing hydraulic system oil leak according to claim 7, it is characterised in that: described filtering assembly includes the fine straining unit adopting polyamide melt-blown filter, and described fine straining unit is arranged between the outlet of hydraulic pump and fuel tank.
9. a kind of method preventing hydraulic system oil leak according to claim 8, it is characterized in that: the filter material of described polyamide melt-blown filter is for adopting polyamide material to be processed by melt-blown process, and the superfine fibre silk of ejection is through bonding mutually and is wound around the hollow cylindrical structure made；Described filter material is open structure, forms the filter opening of different pore size；The size distribution mode of described filter opening is for successively decrease gradually successively along tubular structure outer layer to internal layer pore size.
10. a kind of method preventing hydraulic system oil leak according to claim 9, it is characterized in that: described filter material thickness is 0.5-30mm, wherein the average pore size of cylinder portion outer layer filter opening is 10-100 μm, the average pore size of cylinder portion internal layer filter opening is 1-50 μm, the average diameter of meltblown fibers silk is 0.1-80 μm, and the porosity of filter material is more than 80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159165.2A CN105715627B (en) | 2016-03-21 | 2016-03-21 | A kind of method and apparatus for preventing hydraulic system oil leak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159165.2A CN105715627B (en) | 2016-03-21 | 2016-03-21 | A kind of method and apparatus for preventing hydraulic system oil leak |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105715627A true CN105715627A (en) | 2016-06-29 |
| CN105715627B CN105715627B (en) | 2018-02-06 |
Family
ID=56158935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610159165.2A Active CN105715627B (en) | 2016-03-21 | 2016-03-21 | A kind of method and apparatus for preventing hydraulic system oil leak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105715627B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1492102A (en) * | 2002-10-25 | 2004-04-28 | 三芳化学工业股份有限公司 | Process for producing super fine fiber non-woven composite reinforced artificial leather material |
| CN101257957A (en) * | 2005-09-05 | 2008-09-03 | 维苏维尤斯·克鲁斯布公司 | Filter device for molten metal filtration and method for producing such filters |
| CN101636212A (en) * | 2007-03-20 | 2010-01-27 | Hydac过滤技术有限公司 | Method for the production of a filter element and filter element produced according to said method |
| CN202326531U (en) * | 2011-11-23 | 2012-07-11 | 徐州重型机械有限公司 | Elevating platform fire truck and hydraulic oil filter device and hydraulic control system thereof |
| CN202398179U (en) * | 2011-12-20 | 2012-08-29 | 西安天厚滤清技术有限责任公司 | Oil leakage prevention constant flow oil purification device with suspension type filter element |
| CN103930184A (en) * | 2011-09-22 | 2014-07-16 | Hydac过滤技术有限公司 | Filter material |
| WO2015151582A1 (en) * | 2014-03-31 | 2015-10-08 | 株式会社クボタ | Work machine |
| CN205578411U (en) * | 2016-03-21 | 2016-09-14 | 西安天厚滤清技术有限责任公司 | Device for preventing oil leak of hydraulic system oil impregnate |
| CN205578410U (en) * | 2016-03-21 | 2016-09-14 | 西安天厚滤清技术有限责任公司 | Hydraulic system of antiseep |
-
2016
- 2016-03-21 CN CN201610159165.2A patent/CN105715627B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1492102A (en) * | 2002-10-25 | 2004-04-28 | 三芳化学工业股份有限公司 | Process for producing super fine fiber non-woven composite reinforced artificial leather material |
| CN101257957A (en) * | 2005-09-05 | 2008-09-03 | 维苏维尤斯·克鲁斯布公司 | Filter device for molten metal filtration and method for producing such filters |
| CN101636212A (en) * | 2007-03-20 | 2010-01-27 | Hydac过滤技术有限公司 | Method for the production of a filter element and filter element produced according to said method |
| CN103930184A (en) * | 2011-09-22 | 2014-07-16 | Hydac过滤技术有限公司 | Filter material |
| CN202326531U (en) * | 2011-11-23 | 2012-07-11 | 徐州重型机械有限公司 | Elevating platform fire truck and hydraulic oil filter device and hydraulic control system thereof |
| CN202398179U (en) * | 2011-12-20 | 2012-08-29 | 西安天厚滤清技术有限责任公司 | Oil leakage prevention constant flow oil purification device with suspension type filter element |
| WO2015151582A1 (en) * | 2014-03-31 | 2015-10-08 | 株式会社クボタ | Work machine |
| CN205578411U (en) * | 2016-03-21 | 2016-09-14 | 西安天厚滤清技术有限责任公司 | Device for preventing oil leak of hydraulic system oil impregnate |
| CN205578410U (en) * | 2016-03-21 | 2016-09-14 | 西安天厚滤清技术有限责任公司 | Hydraulic system of antiseep |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105715627B (en) | 2018-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105749602A (en) | Combined filter element for filtering oil | |
| CN205578410U (en) | Hydraulic system of antiseep | |
| CN105688514A (en) | Polyamide filter material and filter element for oil filtration | |
| CN101967390A (en) | Method and equipment for dehydrating crude oil | |
| CN205290534U (en) | It is cold in digit control machine tool high pressure main shaft system for BTA | |
| CN100519433C (en) | Water-saving electricity-saving reverse osmosis water purifying machine | |
| CN103964546A (en) | Intelligent oily-sewage capturing and separating system | |
| CN102908856A (en) | Oil mist separator | |
| CN105715933A (en) | Anti-seepage lubricating system | |
| CN205578411U (en) | Device for preventing oil leak of hydraulic system oil impregnate | |
| CN205579124U (en) | Lubricating system of antiseep | |
| CN105715626A (en) | Anti-seepage hydraulic system | |
| CN205032048U (en) | Tertiary filtration formula oil mist separation device | |
| CN105715424A (en) | Fuel oil tank with external circulation filtering device and fuel oil engine | |
| CN205569878U (en) | Be used for filterable combined type filter core of oil | |
| CN203962250U (en) | Oil-water separation filter core and high efficiency fuel filtrating equipment | |
| CN205569915U (en) | Two -stage integration composite filter element's oil circulation purifier | |
| CN105715627A (en) | Method and device for preventing oil seepage and oil leakage of hydraulic system | |
| CN205714503U (en) | A kind of fuel oil box with outer circulation filter and fuel engines | |
| CN105715430A (en) | Universal rotation type filter utilizing polyamide filter element | |
| CN105715934A (en) | Method and device for preventing oil seepage and oil leakage of lubricating system | |
| CN205699810U (en) | A kind of polyamide filter material | |
| CN205714510U (en) | Use the general rotatable filter of polyamide filter element | |
| CN205569876U (en) | Oil circulation purifier based on polyamide melts sprinkling filter core | |
| CN105797485A (en) | Polyamide filter element obtained through sweat soldering and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |