CN105864220A - Oil filtering system adopting full-frequency-band filtering, magnetization, adsorption and rotating magnetic field - Google Patents

Abstract

The invention relates to an oil filtering system adopting full-frequency-band filtering, magnetization, adsorption and a rotating magnetic field. A filter, a U-shaped particle separating module, an oil return barrel and an outer barrel of the oil filtering system are sequentially mounted on a bottom plate. The filter is connected with the U-shaped particle separating module, and the full-frequency-band filter is adopted. The U-shaped particle separating module comprises a U-shaped pipe which is sequentially provided with a temperature control module, a magnetization module, a first adsorption module, a rotating magnetic field centrifugal module, a second adsorption module and a demagnetization module. The upper portion of the U-shaped particle separating module and the upper portion of the oil return barrel are connected through an oil return barrel oil inlet pipe. An inner barrel is arranged in the outer barrel and mounted on an end cover. A spiral flow channel is accommodated in the inner barrel and connected with the U-shaped particle separating module through an inner barrel oil inlet pipe. The inner barrel oil inlet pipe is located in the oil return barrel oil inlet pipe, and a filter element is arranged on the inner wall of the inner barrel. The oil filtering system has the advantages of being good in filtering performance, high in adaptability and integration, long in service life and the like.

Description

Full frequency band is used to filter, magnetize, adsorb and the oil filtering system of rotating excitation field

[technical field]

The present invention relates to a kind of hydraulic oil filtration system, be specifically related to a kind of employing full frequency band filtering, magnetic Change, adsorb and the oil filtering system of rotating excitation field, belong to technical field of hydraulic equipment.

[background technology]

Statistics both domestic and external show, the fault of hydraulic system about 70%～85% is due to oil Liquid pollution causes.Solid particle is then the pollutant the most universal in oil contamination, damaging effect is maximum. The hydraulic system fault caused by solid grain contamination accounts for the 70% of gross contamination fault.In hydraulic system In particulate pollutant in fluid, metal filings accounting is between 20%～70%.Adopt an effective measure Filter the solid grain contamination in fluid, be the key of Pollution Control in Hydraulic System, be also system peace The Reliable guarantee of row for the national games.

Filter is the key element that hydraulic system filters solid grain contamination.Solid in hydraulic oil Particulate pollutant, outside the precipitable a part of larger particles of oil removal box, filters mainly by oil-filtering apparatus. Especially high pressure filtering device, is mainly used to filter flow direction control valve and the hydraulic oil of hydraulic cylinder, to protect Protect the Hydraulic Elements of this kind of contamination resistance difference, therefore the cleannes of hydraulic oil are required higher.

But, the high pressure filter that existing hydraulic system uses has the disadvantage that (1) all kinds of liquid The cleannes of fluid are required different by pressure element, and the particle size of the solia particle in fluid is the most each Differ, need for this multiple dissimilar wave filters to be installed, thus at the diverse location of hydraulic system Bring cost and the problem installing complexity；(2) filter in hydraulic system mainly uses filter cake Filter type, during filtration, filtrate is perpendicular to filter element surface flowing, and trapped solia particle is formed Filter cake progressive additive, the rate of filtration is gradually reduced the most therewith until filtrate stops flowing out, and reduces The service life of filtering element.

Therefore, for solving above-mentioned technical problem, the employing full frequency band filter of a kind of innovation of necessary offer Ripple, magnetize, adsorb and the oil filtering system of rotating excitation field, to overcome described defect of the prior art.

[summary of the invention]

For solving above-mentioned technical problem, it is an object of the invention to provide a kind of strainability good, adapt to Property and integration high, the using the full frequency band to filter, magnetize, adsorb and rotating excitation field of length in service life Oil filtering system.

For achieving the above object, the technical scheme that the present invention takes is: use full frequency band filtering, magnetization, Absorption and the oil filtering system of rotating excitation field, it include base plate, wave filter, U-shaped separation of particles module, Oil returning tube, inner core, helical flow path, filter core, outer barrel and end cap；Wherein, described wave filter, U Type separation of particles module, oil returning tube, outer barrel are sequentially placed on base plate；Described wave filter include input pipe, Shell, efferent duct, bellows, elastic thin-wall and colloid damping layer；Wherein, described input pipe is even It is connected to one end of shell, itself and hydraulic oil inlet docking；Described efferent duct is connected to another of shell End, it extends in shell, and and U-shaped separation of particles module docking；Described elastic thin-wall is along shell Radial direction be installed in shell；Described input pipe, efferent duct and elastic thin-wall are collectively forming a K-type filter Ripple device；The resonance cavity volume of cylinder is formed between described elastic thin-wall and shell；Described elastic thin-wall Some conical damping holes, conical damping hole connection resonance cavity volume is uniformly had on Zhou Xiang；Described bellows It is wound in the shape of a spiral outside resonance cavity volume, inserts pipe with resonance cavity volume by multiple tapers and connect；Described ripple Line pipe is connected by some arms between respectively enclosing, and arm is provided with switch；Described bellows and resonance are held Chamber composition plug-in type spiral isomery cascaded H mode filter；Described U-shaped separation of particles module includes a U Type pipe, U-tube is sequentially installed with temperature control module, magnetized module, the first adsorption module, rotary magnetic The centrifugal module in field, the second adsorption module and demagnetization module；Described U-shaped separation of particles module and oil return The top of cylinder is connected by an oil returning tube oil inlet pipe；Described inner core is placed in outer barrel, and it passes through a top board And if bolt stem is installed on end cap；Described helical flow path is contained in inner core, itself and U-shaped particulate Connected by an inner core oil inlet pipe between separation module；Described inner core oil inlet pipe is positioned at oil returning tube oil inlet pipe In, and extend into the central authorities of U-shaped separation of particles module, its diameter is less than oil returning tube oil inlet pipe diameter, And be coaxially disposed with oil returning tube oil inlet pipe；Described filter core is arranged on the inwall of inner core, and its precision is 1-5 Micron；The bottom of said tub is provided with a hydraulic oil oil-out.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field is further It is set to: the axis of described input pipe and efferent duct is the most on the same axis；Described conical damping hole is opened The wider place of mouth is positioned at resonance cavity volume, and its taper angle is 10 °；The wider place of tube opening is inserted in described taper Being positioned at bellows, its taper angle is 10 °；The position phase of pipe and conical damping hole is inserted in described taper Stagger mutually；The internal layer of described colloid damping layer and outer layer are respectively outer layer elastic thin-wall and internal layer Thin Elastic Wall, is connected by some pillars are fixing between outer layer elastic thin-wall and internal layer elastic thin-wall；Described outer layer bullet It is filled with the pure water adding antifreezing agent, in pure water in interlayer between property thin-walled and internal layer elastic thin-wall It is suspended with Bio-sil；Described colloid damping layer is connected with shell near one end of efferent duct；Described glue Body damping layer is provided with a piston near one end of efferent duct.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field is further It is set to: described temperature control module includes heater, cooler and temperature sensor；Described heater is adopted Lubricating oil heater with the Chongqing gold letter of band temperature detection；Described cooler selects surface evaporative empty Cooler, the finned tube of cooler selects KLM type finned tube；Temperature sensor uses platinum resistance temperature to pass Sensor.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field is further Be set to: if described magnetized module include aluminium matter pipeline, some windings, iron shell, flange and Dry magnetizing current output module；Wherein, described some windings rotating around outside aluminium matter pipeline, each winding It is made up of positive winding and inverse winding；Described iron shell is coated on aluminium matter pipeline；Described flange welding Two ends at aluminium matter pipeline；Each magnetizing current output module is connected to a winding.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field is further It is set to: described first adsorption module and the second adsorption module all use homopolarity adjacent type absorbing ring, should Homopolarity adjacent type absorbing ring includes aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony Magnetic conduction cap；Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, both It is connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce same sex magnetic Pole；Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, its be positioned at forward solenoid and Reverse solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field is further It is set to: described first adsorption module and the second adsorption module all use the adjacent type of homopolarity of charged hammer Absorbing ring, the homopolarity adjacent type absorbing ring of this charged hammer include aluminium ring shape pipeline, forward solenoid, Reverse solenoid, irony magnetic conduction cap, dividing plate, electric shock hammer and electromagnet；Described forward solenoid and Reverse solenoid is respectively arranged in aluminium ring shape pipeline, and both are connected with electric current in opposite direction so that Forward solenoid and reverse solenoid adjacent produce like pole；Described irony magnetic conduction cap is arranged in aluminium On the inwall of matter circulating line, it is positioned at forward solenoid and reverse solenoid adjacent and forward Solenoid and the intermediate point of reverse solenoid axis；Described dividing plate is positioned at forward solenoid and reverse helical Between pipe；Described electric shock hammer and electromagnet are between dividing plate；Described electromagnet connects and can promote electricity Hammer, makes electric shock hammer tap aluminium ring shape inner-walls of duct.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field is further Be set to: described rotating excitation field be centrifuged module include aluminium matter pipeline, iron shell, three-phase symmetric winding, Flange and three-phase symmetrical current module；Described three-phase symmetric winding is wound on outside aluminium matter pipeline；Described iron Matter shell is coated on aluminium matter pipeline；Described flange welding is at the two ends of aluminium matter pipeline；Described three relative Current module is claimed to connect described three-phase symmetric winding.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field is further It is set to: the bottom of described oil returning tube is provided with an overflow valve, bottom this overflow valve, is provided with an automatically controlled regulation Screw；Described overflow valve is provided with an oil drain out, and this oil drain out is connected to a fuel tank by pipeline.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field is further Being set to: the bottom of described inner core is rounding mesa-shaped, it is connected by an inner core oil exit pipe and oil returning tube, Inner core oil exit pipe is provided with an automatically controlled check-valves.

The full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field also sets up For: the center upright of described inner core is provided with a hollow cylinder, and the pressure reduction that is arranged over of hollow cylinder indicates Device, this pressure difference indicator is installed on end cap；Described inner core oil inlet pipe and the tangent connection of helical flow path.

Compared with prior art, there is advantages that

1. pulsed by the pressure/flow of filter attenuation hydraulic oil, make filter core not occur Vibration, to improve strainability；Hydraulic oil realizes dividing of solia particle in U-shaped separation of particles module From, make the solia particle in fluid to vessel wall motion, at U-shaped separation of particles module outlet, rich in The fluid of the near-wall of solia particle is back to fuel tank after entering oil returning tube by oil returning tube oil inlet pipe, The only fluid of the pipeline center containing trace small particle particulate is then entered by inner core oil inlet pipe entrance inner core Row high-precision filtration, improves the service life of filter core, reduces filtering cost and complexity；Enter The fluid of inner core oil inlet pipe flows into the helical flow path of inner core in the way of tangential influent stream, and inner tube wall is filter Core, then filtrate is close to filter core flow under the influence of centrifugal force, and the surface that filtrate is parallel to filter core is quick Flowing, the hydraulic oil after filtration is then perpendicular to cartridge surface direction and flows out to urceolus, and this cross flows through The particulate of cartridge surface is implemented to sweep stream effect by filter mode, it is suppressed that the increase of filter cake thickness, is deposited on Pollution particle bottom inner core regularly can be discharged to oil returning tube by automatically controlled check-valves, thus improves filter core Service life.

2., by controlling temperature and the magnetic field intensity of hydraulic oil, make the force-magnetized gathering of the particle in fluid Become bulky grain, and promote colloidal particles decomposition to melt, form efficient absorption by adsorption module, pass through Residual particles demagnetization is avoided endangering Hydraulic Elements by degaussing gear, so that solia particle is assembled in fluid Bulky grain is become to move to near-wall.

3. the generation of non-uniform magnetic-field that magnetization needs, need multipair forward and reverse coil to and by different greatly Little electric current, and current values can numeral setting online.

[accompanying drawing explanation]

Fig. 1 is that the full frequency band that uses of the present invention filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field Structural representation.

Fig. 2 is the structural representation of the wave filter in Fig. 1.

Fig. 3 is plug-in type H mode filter schematic diagram.

Fig. 4 is the H mode filter frequency characteristic constitutional diagram of single H mode filter and series connection.Wherein, Solid line is single H mode filter frequency characteristic.

Fig. 5 is the structural representation of K-type wave filter.

Fig. 6 is the cross sectional representation of elastic thin-wall.

Fig. 7 is the Longitudinal cross section schematic of colloid damping layer.

Fig. 8 is the schematic diagram of the U-shaped separation of particles module in Fig. 1.

Fig. 9 is the structural representation of the magnetized module in Fig. 8.

Figure 10 is the structural representation of the winding in Fig. 9.

Figure 11 is the circuit diagram of the magnetizing current output module in Fig. 9.

Figure 12 be first adsorption module (the second adsorption module) of Fig. 8 be homopolarity adjacent type absorbing ring Structural representation.

Figure 13 is the homopolarity that the first adsorption module (the second adsorption module) is charged hammer in Fig. 8 The structural representation of adjacent type absorbing ring.

Figure 14 is the structural representation that the rotating excitation field in Fig. 8 is centrifuged module.

[detailed description of the invention]

Refer to shown in Figure of description 1 to accompanying drawing 14, the present invention be a kind of use full frequency band filtering, Magnetization, absorption and the oil filtering system of rotating excitation field, it is by base plate 6, wave filter 8, U-shaped separation of particles Module 3, oil returning tube 7, inner core 15, helical flow path 17, filter core 18, outer barrel 19 and end cap 25 Form etc. several parts.Wherein, described wave filter 8, U-shaped separation of particles module 2, oil returning tube 7, outer Bucket 19 is sequentially placed on base plate 6.

Described wave filter 8 for hydraulic oil is inputted, and can decay in hydraulic system high, medium and low The fluctuation pressure of frequency range, and suppression flowed fluctuation.Described wave filter 8 by input pipe 81, shell 89, Several parts compositions such as efferent duct 811, bellows 83, elastic thin-wall 87 and colloid damping layer 88.

Wherein, described input pipe 81 is connected to one end of shell 89, and itself and a hydraulic oil inlet 1 are right Connect；Described efferent duct 811 is connected to the other end of shell 89, and it extends in shell 89, itself and U-shaped separation of particles module 3 is docked.Described elastic thin-wall 87 is installed on shell 89 along the radial direction of shell In.The axis of described input pipe 81 and efferent duct 811 the most on the same axis, so can improve The filter effect of more than 10%.

Described input pipe 81, efferent duct 811 and elastic thin-wall 87 are collectively forming a K-type wave filter, Thus hydraulic system high frequency pressure pulsations of decaying.The filter transmission obtained after processing by lumped-parameter method Coefficient is:

$\mathrm{\γ}=\frac{|Z{|}^2}{|Z{|}^2+{\left(\frac{2\mathrm{\ρ}a}{{\mathrm{\πd}}_2^2}\right)}^2}$

Velocity of sound ρ fluid density d in a medium₂Plug-in type efferent duct diameter Z characteristic hinders Anti-.

From above formula, K-type wave filter is similar with the electric capacity effect in circuit.The pressure of different frequency When pulsating wave is by this wave filter, transmission coefficient is different with frequency.Frequency is the highest, then transmission coefficient The least, this shows that the pressure pulse wave of high frequency is decayed the most severe when device after filtering, thus plays Eliminate the effect of high frequency pressure pulsations.

The design principle of described K-type wave filter is as follows: when in pipeline, the fluctuating frequency of pressure is higher, pressure Wave action produces pinch effect to fluid on fluid.When the flow of change enters K by input pipe During mode filter cavity volume, liquid flow exceedes average discharge, and the cavity volume of expansion can absorb unnecessary liquid flow, and Liquid flow, the energy thus absorption pressure is pulsed is released when less than average discharge.

Described elastic thin-wall 87 weakens hydraulic system medium-high frequency pressure fluctuation by being forced to mechanical oscillation. The elastic thin-wall intrinsic frequency obtained after processing by lumped-parameter method is:

$f_m=\frac{k^{2}h}{2{\mathrm{\πR}}^2}\·\sqrt{\frac{E}{12\mathrm{\ρ}(1+\mathrm{\η})(1-{\mathrm{\μ}}^2)}}$

K elastic thin-walled structures coefficient h elastic thin-wall thickness R elastic thin-wall radius

The mass density of the Young's modulus ρ elastic thin-wall of E elastic thin-wall

The Poisson's ratio of the current-carrying factor mu elastic thin-wall of η elastic thin-wall.

Substitute into actual parameter, above formula is carried out simulation analysis it is found that elastic thin-wall 87 intrinsic Frequency is generally high than the intrinsic frequency of H mode filter, and its attenuation band is also wide than H mode filter. In relatively wide frequency band range, elastic thin-wall has good attenuating to pressure fluctuation.With Time, the elastic thin-wall radius in the filter construction of the present invention is bigger and relatively thin, and its intrinsic frequency is more leaned on Nearly Mid Frequency, can realize the effective attenuation to the medium-high frequency pressure fluctuation in hydraulic system.

The design principle of described elastic thin-wall 87 is as follows: when producing intermediate frequency pressure fluctuation in pipeline, double Pipe plug-in type cavity volume wave filter is more weak to the damping capacity of pressure oscillation, flows into Double-pipe plug-in type cavity volume Periodically pulsing pressure continuous action is on the inside and outside wall of elastic thin-wall, owing to there being pillar between inside and outside wall Fixing connection, inside and outside elastic thin-wall does periodic vibration by the frequency of fluctuation pressure simultaneously, this forced oscillation The dynamic pressure fluctuation energy consuming fluid, thus realize the filtering of Mid Frequency pressure.Can by the principle of virtual work Knowing, elastic thin-wall consumes ability and potential energy during its forced vibration and the kinetic energy of fluid pulsation pressure energy Sum is directly related, and in order to improve Mid Frequency filtering performance, the radial design of elastic thin-wall is for being much larger than Pipe radius, and the thickness of thin-walled is less, representative value is less than 0.1mm.

Further, the resonance cavity volume 85 of cylinder is formed between described elastic thin-wall 87 and shell 89. Some conical damping holes 86 are uniformly had, to ensure in whole filter in the axial direction of described elastic thin-wall 87 Plug-in type connection in series-parallel filtering all can be realized in the range of ripple device.Conical damping hole 86 connection resonance cavity volume 85.The described wider place of conical damping hole opening is positioned at resonance cavity volume, and its taper angle is 10 °, is used for Broadening frequency filtering scope, the wave filter natural angular frequency obtained after processing by lumped-parameter method is:

$\begin{array}{cc}{\mathrm{\ω}}_r=a\sqrt{\frac{S}{L(V-LS)}}& (rad/s)\end{array}---\left(1\right)$

Velocity of sound L damping hole long S damping hole cross-sectional area V parallel resonance in a medium Cavity volume volume.

Described bellows 83 is wound on outside resonance cavity volume 85 in the shape of a spiral, and resonance cavity volume 85 is by many Individual taper is inserted pipe 82 and is connected.Described taper is inserted the wider place of pipe 82 opening and is positioned at bellows 83, Its taper angle be 10 ° for broadening frequency filtering scope.Pipe 82 and taper damping are inserted in described taper Mutually stagger in the position in hole 86.Described bellows 83 is connected by some arms 810 between respectively enclosing, Arm 810 is provided with switch 84.It is different that described bellows 83 and resonance cavity volume 85 form plug-in type spiral Structure cascaded H mode filter.

As shown in Figure 4, cascaded H mode filter has 2 natural angular frequencies, filter effect at crest Preferably, at trough, the most substantially do not has filter effect；Plug-in type spiral isomery cascaded H mode filter In have employed bellows 83 structure of spiral isomery, bellows itself has elasticity, works as hydraulic system Flow and pressure fluctuation through bellows, fluid media (medium) causes the vibration of hydraulic pressure-spring system, offsets Wave energy, thus play filter action；Meanwhile, the some arms 810 between each circle bellows 83 Connection or disconnection, cause interference and the superposition of ripple, thus the frequency changing cascaded H mode filter be special Property；Reasonable arrangement filter parameter and the connection quantity of arm and position, can make cascaded H type filter The trough of the frequency characteristic of device is raised, and makes wave filter have good filtering at whole medium and low frequency Duan Jun Can, it is achieved the entire spectrum filtering of medium and low frequency section.

The inner side of described elastic thin-wall 87 is provided with colloid damping layer 88.Described colloid damping layer 88 Internal layer and outer layer are respectively outer layer elastic thin-wall 81 and internal layer elastic thin-wall 82, outer layer elastic thin-wall 81 And connected by some pillars 814 are fixing between internal layer elastic thin-wall 82.Outer layer elastic thin-wall 81 and interior It is filled with the pure water 816 adding antifreezing agent, in pure water 816 in interlayer between layer elastic thin-wall 82 It is suspended with Bio-sil 815.Described colloid damping layer 88 is near one end of efferent duct 811 and shell 89 It is connected；Described colloid damping layer 88 is additionally provided with a piston 817 near one end of efferent duct 811.

Due to outer layer elastic thin-wall 81 with internal layer elastic thin-wall 82 spacing is the least and is fixed by pillar 814 Connecting, when pressure fluctuation acts perpendicularly to thin-walled, inside and outside wall produces and is close to consistent deformation, colloid Damping layer thickness is kept approximately constant, and pressure fluctuation is not had damping action；Colloid damping layer 88 The flow pulsation in 817 sensation level directions of piston, when flow pulsation strengthens, piston 817 pressurized makes Colloid damping layer shrinks, and squeezing action makes the water in colloid damping layer 88 by nanoscale transfer passage Enter micron order central void；When flow pulsation weakens, piston 817 is by back-pressure, and now colloid damps Layer expands, and the water in colloid damping layer is discharged through passage from central void.In the process, due to silicon The mechanics effect of glue 815 microchannel sorption, the roughness effect of channel surface molecular scale and chemistry are non-all Mass effect, piston follows the boundary that colloid damping layer shrinks and does " gas-liquid-solid " border in expansion process Face merit, thus flow systolic implementation is decayed, its substantially parallel R mode filter.This filter Ripple device is relative to the advantage of general liquid condenser: it is by the boundary on " gas-liquid-solid " border The mode of face merit decays flow pulsation, can absorb a large amount of mechanical energy in the case of not producing heat, And energy ezpenditure does not relies on piston speed, extinction efficiency is obviously improved.

The present invention can also the pulsation decay of solid line operating mode self-adaptive pressure.When hydraulic system working conditions change, Both executive component stopped suddenly or ran, and when the opening of valve changes, can cause the spy of pipe-line system Property impedance is undergone mutation, so that former pipeline pressure curve with change in location in time changes the most therewith Become, then the position of pressure peak also changes.Axial length design due to the wave filter of the present invention For more than system main pressure pulse wavelength, and wave filter plug-in type spiral isomery cascaded H type filtering The cavity volume length of device, the length of K-type wave filter and the length of elastic thin-wall and wave filter axial length phase Deng, it is ensured that pressure peak position is constantly in the effective range of wave filter；And plug-in type spiral shell The conical damping hole 86 of rotation isomery cascaded H mode filter is opened on elastic thin-wall 87, in the axial direction Being uniformly distributed, bellows 83 and the taper resonated between cavity volume 85 that spiral isomery is wound around insert pipe at axle To being uniformly distributed so that the performance of wave filter is had little to no effect by pressure peak change in location, thus Achieve operating mode adaptive-filtering function.In view of three kinds of filter structure axial dimensions and wave filter phase When, this bigger size also ensure that hydraulic filter possesses stronger pressure fluctuation damping capacity.

The method that the pressure fluctuation restraining device using the present invention carries out hydraulic pulsation filtering is as follows:

1), hydraulic fluid enters K-type wave filter by input pipe, and the cavity volume of expansion absorbs unnecessary liquid flow, Complete the filtering of high frequency pressure pulsations；

2), by elastic thin-wall 87 forced vibration, the pressure fluctuation energy of fluid is consumed, in completing The filtering of pressure fluctuation frequently；

3), by plug-in type spiral isomery cascaded H mode filter, inserted by conical damping hole, taper Enter pipe and fluid produces resonance, consume pulsation energy, complete the filtering of low frequency pulsation；

4), the axial length of wave filter is designed as more than hydraulic system main pressure pulsation wavelength, and Plug-in type connection in series-parallel H mode filter length, filter length and the same wave filter of elastic thin-wall 87 length Length is equal, makes pressure peak position be constantly in the effective range of wave filter, it is achieved system work The filtering of pressure fluctuation when condition changes.

Described U-shaped separation of particles module 3 includes a U-tube 31, and U-tube 31 is sequentially installed with Temperature control module 32, magnetized module the 33, first adsorption module 34, rotating excitation field be centrifuged module 36, Two adsorption modules 37 and demagnetization module 35.

Described temperature control module 32 main purpose is to provide optimal magnetization temperature for magnetized module 33 40-50 DEG C, the most also having the effect of fluid viscosity reduction concurrently, it includes heater, cooler and TEMP Device.Described heater uses the lubricating oil heater of the Chongqing gold letter of band temperature detection.Described cooler Can be selected for remover for surface evaporation type air cooling, the advantage having water-cooled and air cooling concurrently, good heat dissipation effect, use light Pipe, fluid resistance is little；Cooler fin type is high wing, and finned tube selects KLM type finned tube, passes Good in thermal property, thermal contact resistance is little, and fin is big with pipe contact area, and laminating closely, firmly, is born Cold and hot sudden turn of events ability is good, and fin root weather-resistant performance is high；The pipe row optimum of air cooler is 8. Described temperature sensor uses platinum resistance temperature sensor.

Described magnetized module 33 realizes the force-magnetized of metallic particles, and makes micron-sized metallic particles Aggregate into bulky grain, it is simple to subsequent adsorbtion separates.Magnetized module 32 it is also required to provide non-homogeneous simultaneously Magnetic field, carries out magnetization and decomposes the colloidal particles in hydraulic oil, and making colloid particulate breakup is smaller particle The particulate of size, pollution abatement.

Described magnetized module 33 is by aluminium matter pipeline 331, some windings 332, iron shell 333, method Orchid 334 and some magnetizing current output modules 335 form.Wherein, described aluminium matter pipeline 331 makes Fluid flows there through and by magnetization treatment, and the magnetic conductivity of aluminium is the lowest, can make in pipeline 331 Obtain higher magnetic field intensity.

Described some windings 332 are rotating around outside aluminium matter pipeline 331, by a diameter of about 1.0mm Copper wire coating insulated paint is made.Each winding 332 is all separate setting, respectively by corresponding magnetic Galvanic current output module 335 controls, and wherein electric current needs different according to system.Due to often enclose around Organizing 332 separate, the electric current loop that its exit can cause this coil to form is not real " justifying ", But having individual breach, this can cause the radial distribution of aluminium matter pipeline 331 internal magnetic field uneven, thus shadow Ring magnetic efficiency.For solving this problem, the often circle winding 332 of this creation is all by positive winding 336 and inverse Winding 337 forms in order to produce the magnetic field in same polarity direction and make up what breach caused simultaneously Magnetic field is unbalanced.Size of current in positive winding and inverse winding is equal.In aluminium matter pipeline 331 axis side Upwards it is arranged with multipair forward and reverse winding, by different electric currents, in order to form the non-homogeneous of aforementioned claim Magnetic field.

Described iron shell 333 is coated on aluminium matter pipeline 331, and the material of irony can mask big portion The magnetic flux divided.Described flange 334 is welded on the two ends of aluminium matter pipeline 331, and by flange flange 334 In U-tube 20.

Each magnetizing current output module 335 is connected to a winding 332, and it utilizes digital potentiometer real The feature of Shi Xiugai resistance, it is achieved the real-time control of non-uniform magnetic-field.Described magnetizing current output module The circuit theory diagrams of 335 can be found in accompanying drawing 5, and its digital potentiometer used is AD5206, has 6 Passage defeated.Amplifier AD8601 and metal-oxide-semiconductor 2N7002 achieve high-precision electricity by negative-feedback Pressure follows output.Constant High-current output have employed the high voltage of Texas Instrument (TI), the fortune of big electric current Put OPA 549.

Described first adsorption module 34 is the most micro-for adsorbing the magnetic polymeric after magnetized module 33 magnetizes , it can use homopolarity adjacent type absorbing ring, and this homopolarity adjacent type absorbing ring is by aluminium ring shape pipeline 341, the parts such as forward solenoid 342, reverse solenoid 343 and irony magnetic conduction cap 344 composition. Wherein, described forward solenoid 342 and reverse solenoid 343 are respectively arranged in aluminium ring shape pipeline 341, both are connected with electric current in opposite direction so that forward solenoid 342 and reverse solenoid 343 Adjacent produces like pole.Described irony magnetic conduction cap 344 is arranged in the interior of aluminium ring shape pipeline 341 On wall, it is positioned at forward solenoid 342 and reverse solenoid 343 adjacent and forward solenoid 342 and the intermediate point of reverse solenoid 343 axis.

The design principle of described homopolarity adjacent type absorbing ring is as follows: energising forward solenoid 342, reversely Solenoid 343, adjacent forward solenoid 342, reverse solenoid 343 are connected with electricity in opposite direction Stream so that forward solenoid 342, reverse solenoid 343 adjacent produce like pole；Meanwhile, Aluminium ring shape pipeline 341 can improve magnetic circuit, strengthens the magnetic field intensity at inner-walls of duct, strengthens irony The magnetic conduction cap 344 capture adsorption capacity to particle.Each forward solenoid 342, reverse solenoid 343 Electric current can be different with concentration and change, to obtain optimal adsorption performance according to the particle size of particle.

Further, described first adsorption module 34 may be used without the homopolarity adjacent type suction of charged hammer Follower ring, the homopolarity adjacent type absorbing ring of this charged hammer is by aluminium ring shape pipeline 341, forward solenoid 342, reverse solenoid 343, irony magnetic conduction cap 344, dividing plate 345, electric shock hammer 346 and electromagnetism Iron 347 parts such as grade form.Wherein, described forward solenoid 342 and reverse solenoid 343 cloth respectively Being placed in aluminium ring shape pipeline 341, both are connected with electric current in opposite direction so that forward solenoid 342 Like pole is produced with reverse solenoid 343 adjacent.Described irony magnetic conduction cap 344 is arranged in aluminium matter On the inwall of circulating line 341, its be positioned at forward solenoid 342 and reverse solenoid 343 adjacent, And forward solenoid 342 and the intermediate point of reverse solenoid 343 axis.Described electric shock hammer 346 Hes Electromagnet 347 is between dividing plate 345.Described electromagnet 347 connects and can promote electric shock hammer 346, Make electric shock hammer 346 percussion aluminium ring shape pipeline 342 inwall.

The design principle of the homopolarity adjacent type absorbing ring of described charged hammer is as follows: energising forward solenoid 342, reverse solenoid 343, adjacent forward solenoid 342, reverse solenoid 343 are connected with direction Contrary electric current so that forward solenoid 342, reverse solenoid 343 adjacent produce like pole； Meanwhile, aluminium ring shape pipeline 341 can improve magnetic circuit, strengthens the magnetic field intensity at inner-walls of duct, increases The strong irony magnetic conduction cap 344 capture adsorption capacity to particle.Each forward solenoid 342, reverse helical Pipe 343 electric current can be different with concentration and change, to obtain best adsorption according to the particle size of particle Energy.And by the setting of electric shock hammer 346, prevent particle bulk deposition at irony magnetic conduction cap 344, Affect adsorption effect.Now, controlled in electric shock hammer 346 percussion pipeline 341 by electromagnet 347 Wall so that adsorbed particle scatter to both sides.Meanwhile, when cleaning pipeline 341, electric shock hammer The percussion of 346 can also improve cleaning performance.

Described first adsorption module 34 is designed to U-shaped, when fluid enters U-shaped absorption pipeline, Grain gravity, centrifugal force effect under, to side, tube wall moves, plus magnetic field force effect, radially Translational speed is accelerated, and the efficiency of granular absorption is improved；Leave U-shaped absorption pipeline at fluid to rise Time, gravity and magnetic field force make a concerted effort so that particle diagonally under direction motion, extend numerical density Time, improve the efficiency of granular absorption.

Described rotating excitation field is centrifuged module 36 and utilizes that rotating excitation field is centrifugal is not inhaled by the first adsorbent equipment 34 Attached small magnetization particle, its by aluminium matter pipeline 361, iron shell 362, three-phase symmetric winding 363, Flange 364 and three-phase symmetrical current module 365 form.Described three-phase symmetric winding 363 is wound on aluminium Outside matter pipeline 361.Described iron shell 362 is coated on aluminium matter pipeline 361.Described flange 364 It is welded on the two ends of aluminium matter pipeline 361.Described three-phase symmetrical current module 365 connects described three relative Claim winding 363.

The operation principle that described rotating excitation field is centrifuged module 36 is as follows: small magnetization not to be adsorbed Grain enters rotating excitation field and is centrifuged module 36, and three-phase symmetrical current module 365 makes three-phase symmetric winding 363 In flow through three-phase symmetrical electric current, this electric current produces rotating excitation field, magnetized particles in aluminium matter pipeline 361 Acted on by magnetic field force under rotating excitation field effect, and the most spirally advanced, Simultaneously to vessel wall motion.Therefore, regulation magnetic field intensity can make the particle in fluid " divide from fluid From " out, it being gathered in aluminium matter pipeline 361 near-wall, it is simple to subsequent adsorbtion captures.

Described second adsorbent equipment 37 is identical with described first adsorbent equipment 34 structure, function and effect Mechanism is the most identical, and it can adsorb rotated magnetic field further and be centrifuged the particle that module 36 separates.

Described demagnetization module 35 gives magnetized particles demagnetization, prevents residual magnetism particulate from being entered by oil returning tube Oil pipe enters hydraulic circuit, and sensitive to pollution Hydraulic Elements cause damage.

An oil returning tube oil inlet pipe 22 is passed through in the top of described U-shaped separation of particles module 3 and oil returning tube 7 Connect；By U-shaped separation of particles module 3 process after, the fluid of U-tube 31 near-wall rich in Aggregated particles, is back to fuel tank after entering oil returning tube 7 by oil returning tube oil inlet pipe 22.

The bottom of described oil returning tube 7 is provided with an overflow valve 8, is provided with an automatically controlled tune bottom this overflow valve 8 Joint screw 9；Described overflow valve 8 is provided with an oil drain out 10, and this oil drain out 10 is by pipeline 20 even It is connected to a fuel tank 11.

Described inner core 15 is placed in outer barrel 19, if it is installed by a top board 13 and bolt stem 21 On end cap 25.Described helical flow path 17 is contained in inner core 15, itself and U-shaped separation of particles mould Connected by an inner core oil inlet pipe 12 between block 3, specifically, described inner core oil inlet pipe 12 and spiral shell The tangent connection in eddy flow road 17.The fluid of the U-tube 31 pipeline center only small particle particulate Han trace is logical Cross inner core oil inlet pipe 12 to enter inner core 15 and realize high-precision filtration, thus realize solia particle and separate. Further, described inner core oil inlet pipe 12 is positioned at oil returning tube oil inlet pipe 22, and extends into U-shaped micro- The central authorities of grain separation module 3, its diameter is less than oil returning tube oil inlet pipe 22 diameter, and enters with oil returning tube Oil pipe 22 is coaxially disposed.

Further, the bottom of described inner core 15 is rounding mesa-shaped, and it passes through an inner core oil exit pipe 23 Connecting with oil returning tube 7, inner core oil exit pipe 23 is provided with an automatically controlled check-valves 24.Described inner core 15 Center upright is provided with a hollow cylinder 16, hollow cylinder 16 be arranged over pressure difference indicator 14, should Pressure difference indicator 14 is installed on end cap 25.

Described filter core 18 is arranged on the inwall of inner core 15, and its precision is 1-5 micron.

The bottom of said tub 19 is provided with a hydraulic oil oil-out 5, is incited somebody to action by hydraulic oil oil-out 5 The hydraulic oil filtered is discharged.

In the present invention, due to U-shaped separation of particles module 3, solia particle separation of polymeric in fluid is made With, in the fluid in U-shaped separation of particles module 3 exit, the fluid at the center only small particle Han trace Particulate, this part fluid is flowed into inner core 15 from inner core oil inlet pipe 12 and carries out high-precision filtration；And manage Fluid near wall is rich in aggregated particles, and this part fluid enters oil return by oil returning tube oil inlet pipe 22 Cylinder 7, then flow back to fuel tank 11 through the oil drain out 10 of overflow valve 8, thus realize solia particle by particle Footpath shunting filtering.Herein, oil returning tube 7 and overflow valve 8 serve aforesaid macrofiltration, thus save Save filter number, reduce system cost and complexity.The automatically controlled set screw 9 of overflow valve 8 For regulating oil pressure relief, its pressure is adjusted to slightly below pressure at filtering outlet, to ensure inner core 15 filtering traffics.

It addition, traditional filter mainly uses cake filtration mode, during filtration, filtrate is perpendicular to filter Element surface flows, and trapped solia particle forms filter cake progressive additive, and the rate of filtration is the most therewith It is gradually reduced, until filtrate stops flowing out, reduces the service life of filter element.In this present invention In, carry in the filtrate of small particle particulate flows in the way of tangential influent stream from inner core oil inlet pipe 12 The helical flow path 17 of cylinder 15, inner core 15 wall of helical duct 17 side is high-precision filter element 18, filter Liquid is close to filter core 18 surface under the influence of centrifugal force, and filtrate is parallel to the surface of filter core 18 and quickly flows Dynamic, the hydraulic oil after filtration is then perpendicular to filter core 18 surface direction and flows out to urceolus 19, the two stream Dynamic direction is orthogonal staggered, therefore is called cross flow and filters.The quickly flowing of filtrate is to being gathered in The particulate on filter core 18 surface is applied with shearing and sweeps stream effect, thus inhibits the increase of filter cake thickness, Making rate of filtration near constant, filter pressure also will not raise with the passing of time, making of filter core With the life-span thus increase substantially.Along with the accumulation of filtration time, it is deposited at the bottom of inner core 15 inverted round stage The pollution particle in portion is stepped up, and the rate of filtration slowly declines, unfiltered filtrate edge in inner core 15 The hollow cylinder 16 at center rises, and now, pressure difference indicator 14 works, and monitors the change of its pressure, That is the stopping state of filter core 18 bottom inner core 15, if exceeding threshold value, then regulate automatically controlled set screw 9 reduce oil pressure relief, and open check-valves 24 simultaneously, make bottom inner core 15 containing more pollution particle Filtrate under differential pressure action, be discharged to oil returning tube 7 by inner core oil exit pipe 23, it is to avoid bottom filter core 18 blockage deteriorate, thus extend filter core 18 service life.

The processing step using above-mentioned oil-filtering apparatus to process phegma force feed is as follows:

1), the fluid in fluid pressure line pass through wave filter 8, wave filter 8 decay the height in hydraulic system, In, the fluctuation pressure of low-frequency range, and suppression flowed fluctuation；

2), phegma force feed enters the temperature control module 32 of U-shaped separation of particles module 3, by temperature control mould Block 32 regulates oil temperature to optimal magnetization temperature 40-50 DEG C, enters magnetized module 33 afterwards；

3), by magnetized module 33, oil return is magnetized, make micron-sized metallic particles aggregate into Bulky grain, delivers to the first adsorption module 34 afterwards；

4), being adsorbed the magnetic polymeric particulate in oil return by the first adsorption module 34, oil return afterwards is sent It is centrifuged module 36 to rotating excitation field；

5), rotating excitation field is centrifuged module 36 and utilizes rotating excitation field to separate unadsorbed magnetic microparticles, it The second adsorption module 37 is delivered in rear oil return；

6), the magnetic polymeric particulate in the second adsorption module 37 second adsorption oil return；

7), magnetic particle magnetic is eliminated by demagnetization module 35；

8), the fluid of the most U-shaped separation of particles module 3 near-wall passes through oil returning tube oil inlet pipe 22 Being back to fuel tank after entering oil returning tube 7, the fluid of the pipeline center containing trace small particle particulate then leads to Cross inner core oil inlet pipe 12 to enter inner core 15 and carry out high-precision filtration；

9) fluid, carrying small particle particulate flows into the spiral flow of inner core 15 in the way of tangential influent stream Road 17, fluid is close to filter core flow under the influence of centrifugal force, and is carried out high-precision filtration；

10), the fluid after high-precision filtration enters urceolus 19, and by the hydraulic oil bottom urceolus 19 Oil-out 5 is discharged.

Above detailed description of the invention is only the preferred embodiment of this creation, not in order to limit this wound Make, all any modification, equivalent substitution and improvement etc. done within this spirit created and principle, Within should be included in the protection domain of this creation.

Claims (10)

1. use full frequency band to filter, magnetize, adsorb and the oil filtering system of rotating excitation field, it is characterised in that: include base plate, wave filter, U-shaped separation of particles module, oil returning tube, inner core, helical flow path, filter core, outer barrel and end cap；Wherein, described wave filter, U-shaped separation of particles module, oil returning tube, outer barrel are sequentially placed on base plate；Described wave filter includes input pipe, shell, efferent duct, bellows, elastic thin-wall and colloid damping layer；Wherein, described input pipe is connected to one end of shell, itself and hydraulic oil inlet docking；Described efferent duct is connected to the other end of shell, and it extends in shell, and and U-shaped separation of particles module docking；Described elastic thin-wall is installed in shell along the radial direction of shell；Described input pipe, efferent duct and elastic thin-wall are collectively forming a K-type wave filter；The resonance cavity volume of cylinder is formed between described elastic thin-wall and shell；Some conical damping holes, conical damping hole connection resonance cavity volume is uniformly had in the axial direction of described elastic thin-wall；Described bellows is wound on outside resonance cavity volume in the shape of a spiral, inserts pipe with resonance cavity volume by multiple tapers and connects；Described bellows is connected by some arms between respectively enclosing, and arm is provided with switch；Described bellows and resonance cavity volume composition plug-in type spiral isomery cascaded H mode filter；Described U-shaped separation of particles module includes a U-tube, U-tube is sequentially installed with temperature control module, magnetized module, the first adsorption module, rotating excitation field are centrifuged module, the second adsorption module and demagnetization module；The top of described U-shaped separation of particles module and oil returning tube is connected by an oil returning tube oil inlet pipe；Described inner core is placed in outer barrel, if it is installed on end cap by a top board and bolt stem；Described helical flow path is contained in inner core, is connected by an inner core oil inlet pipe between itself and U-shaped separation of particles module；Described inner core oil inlet pipe is positioned at oil returning tube oil inlet pipe, and extends into the central authorities of U-shaped separation of particles module, and its diameter is less than oil returning tube oil inlet pipe diameter, and and oil returning tube oil inlet pipe be coaxially disposed；Described filter core is arranged on the inwall of inner core, and its precision is 1-5 micron；The bottom of said tub is provided with a hydraulic oil oil-out.

2. employing full frequency band as claimed in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterised in that: the axis of described input pipe and efferent duct is the most on the same axis；The described wider place of conical damping hole opening is positioned at resonance cavity volume, and its taper angle is 10 °；Described taper is inserted the wider place of tube opening and is positioned at bellows, and its taper angle is 10 °；Described taper is inserted the position of pipe and conical damping hole and is mutually staggered；The internal layer of described colloid damping layer and outer layer are respectively outer layer elastic thin-wall and internal layer elastic thin-wall, are connected by some pillars are fixing between outer layer elastic thin-wall and internal layer elastic thin-wall；It is filled with, in interlayer between described outer layer elastic thin-wall and internal layer elastic thin-wall, the pure water adding antifreezing agent, in pure water, is suspended with Bio-sil；Described colloid damping layer is connected with shell near one end of efferent duct；Described colloid damping layer is provided with a piston near one end of efferent duct.

3. employing full frequency band as claimed in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterised in that: described temperature control module includes heater, cooler and temperature sensor；Described heater uses the lubricating oil heater of the Chongqing gold letter of band temperature detection；Remover for surface evaporation type air cooling selected by described cooler, and the finned tube of cooler selects KLM type finned tube；Temperature sensor uses platinum resistance temperature sensor.

4. employing full frequency band as claimed in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterised in that: described magnetized module includes aluminium matter pipeline, some windings, iron shell, flange and some magnetizing current output modules；Wherein, described some windings are rotating around outside aluminium matter pipeline, and each winding is made up of positive winding and inverse winding；Described iron shell is coated on aluminium matter pipeline；Described flange welding is at the two ends of aluminium matter pipeline；Each magnetizing current output module is connected to a winding.

5. employing full frequency band as claimed in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterized in that: described first adsorption module and the second adsorption module all use homopolarity adjacent type absorbing ring, this homopolarity adjacent type absorbing ring to include aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony magnetic conduction cap；Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, and both are connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce like pole；Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, and it is positioned at forward solenoid and reverse solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis.

6. employing full frequency band as claimed in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterized in that: described first adsorption module and the second adsorption module all use the homopolarity adjacent type absorbing ring of charged hammer, the homopolarity adjacent type absorbing ring of this charged hammer includes aluminium ring shape pipeline, forward solenoid, reverse solenoid, irony magnetic conduction cap, dividing plate, electric shock hammer and electromagnet；Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, and both are connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce like pole；Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, and it is positioned at forward solenoid and reverse solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis；Described dividing plate is between forward solenoid and reverse solenoid；Described electric shock hammer and electromagnet are between dividing plate；Described electromagnet connects and can promote electric shock hammer, makes electric shock hammer tap aluminium ring shape inner-walls of duct.

7. the full frequency band that uses described in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterised in that: described rotating excitation field is centrifuged module and includes aluminium matter pipeline, iron shell, three-phase symmetric winding, flange and three-phase symmetrical current module；Described three-phase symmetric winding is wound on outside aluminium matter pipeline；Described iron shell is coated on aluminium matter pipeline；Described flange welding is at the two ends of aluminium matter pipeline；Described three-phase symmetrical current module connects described three-phase symmetric winding.

8. the full frequency band that uses described in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterised in that: the bottom of described oil returning tube is provided with an overflow valve, is provided with an automatically controlled set screw bottom this overflow valve；Described overflow valve is provided with an oil drain out, and this oil drain out is connected to a fuel tank by pipeline.

9. the full frequency band that uses described in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterized in that: the bottom of described inner core is rounding mesa-shaped, it is connected by an inner core oil exit pipe and oil returning tube, and inner core oil exit pipe is provided with an automatically controlled check-valves.

10. the full frequency band that uses described in claim 1 filters, magnetizes, adsorbs and the oil filtering system of rotating excitation field, it is characterized in that: the center upright of described inner core is provided with a hollow cylinder, hollow cylinder be arranged over pressure difference indicator, this pressure difference indicator is installed on end cap；Described inner core oil inlet pipe and the tangent connection of helical flow path.