CN105864175A - Filtering method adopting variable-structure work condition self-adaptive filtering, adsorption and rotating magnetic field - Google Patents

Abstract

The invention relates to a filtering method adopting variable-structure work condition self-adaptive filtering, adsorption and a rotating magnetic field. According to the filtering method, a filter is used for attenuating pressure/flow pulsation of hydraulic oil, and a variable-structure work condition self-adaptive filter is adopted as the filter; a U-shaped particle separation module is used for achieving separation of solid particles so that the solid particles in oil liquid can move towards the pipe wall, the oil liquid flows back to an oil tank after entering an oil return barrel through an oil inlet pipe of the oil return barrel, oil liquid, containing a micro quantity of small-particle-size particles, at the center of a pipeline enters an inner barrel through an oil inlet pipe of the inner barrel to be subjected to high-precision filtering, and the service life of a filter element is prolonged; the oil liquid entering the oil inlet pipe of the inner barrel flows into a spiral flow channel of the inner barrel in a tangent inflow manner, the inner barrel wall is provided with the filter element, filter liquor is closely attached to the filter element to flow under the effect of centrifugal force, the filter liquor fast flows parallel to the surface of the filter element, filtered hydraulic oil flows out to an outer barrel in the direction perpendicular to the surface of the filter element; and pollution particles deposited at the bottom of the inner barrel can be discharged to the oil return barrel regularly through an electronic control check valve, and therefore the service life of the filter element is prolonged.

Description

With structure changes operating mode adaptive-filtering, absorption and the filter method of rotating excitation field

[technical field]

The present invention relates to a kind of hydraulic oil filtering method, be specifically related to one structure changes operating mode self adaptation Filtering, absorption and the filter method 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 size of the solid particle in fluid is the most each Differ, need for this multiple dissimilar wave filter 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 solid 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 solve above-mentioned technical problem, a kind of innovation of necessary offer use structure changes operating mode The filter method of adaptive-filtering, absorption and 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, service life length by structure changes operating mode adaptive-filtering, absorption and rotating excitation field Filter method.

For achieving the above object, the technical scheme that the present invention takes is: filter by structure changes operating mode self adaptation The filter method of ripple, absorption and rotating excitation field, it uses a kind of filter, this filter include base plate, Wave filter, U-shaped separation of particles module, oil returning tube, inner core, helical flow path, filter element, outer barrel and End cap；Wherein, described wave filter, U-shaped separation of particles module, oil returning tube, outer barrel are sequentially placed into the end On plate；Described wave filter includes input pipe, shell, outlet tube, S type elastic thin-wall, plug-in type H Mode filter, plug-in type cascaded H mode filter 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 outlet tube is connected to another of shell End, itself and U-shaped separation of particles module are docked；Described S type elastic thin-wall is installed on along the radial direction of shell In shell, in it, form expansion chamber and contraction chamber；Described input pipe, outlet tube and S type elastic thin-wall It is collectively forming a S type cavity volume wave filter；Resonance series is formed between described S type elastic thin-wall and shell Cavity volume I, resonance series cavity volume II and parallel resonance cavity volume；Described resonance series cavity volume I and series connection Separated by an elastic baffle between resonance cavity volume II；Uniformly open in the axial direction of described S type elastic thin-wall There are some conical damping holes；Uniformly have some tapers in the axial direction of described elastic baffle and insert pipe, institute State taper and insert pipe connection resonance series cavity volume I and resonance series cavity volume II；Described plug-in type H type is filtered Ripple device is positioned at parallel resonance cavity volume, and it is connected with conical damping hole；Described plug-in type cascaded H type Wave filter is positioned at resonance series cavity volume I and resonance series cavity volume II, and it is also connected with conical damping hole Logical；Described plug-in type H mode filter and plug-in type cascaded H mode filter are axially symmetrical set, and Composition plug-in type connection in series-parallel H mode filter；Described colloid damping layer is arranged on the interior of S type elastic thin-wall Side；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 mould Block；The top of described U-shaped separation of particles module and oil returning tube is connected by an oil returning tube oil inlet pipe；Institute State inner core to be placed in outer barrel, if it is installed on end cap by a top board and bolt stem；Described spiral Runner 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, Its diameter is less than oil returning tube oil inlet pipe diameter, and is coaxially disposed with oil returning tube oil inlet pipe；Described filter element sets Putting on the inwall of inner core, its precision is 1-5 micron；The bottom of said tub is provided with a hydraulic oil and goes out Hydraulic fluid port；

It comprises the steps:

1), the fluid in fluid pressure line passes through wave filter, height in filter attenuation hydraulic system, in, The fluctuation pressure of low-frequency range, and suppression flowed fluctuation；

2), backflow force feed enters the temperature control module of U-shaped separation of particles module, is adjusted by temperature control module Fuel-economizing temperature, to optimal magnetization temperature 40-50 DEG C, enters magnetized module afterwards；

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

4), by the magnetic polymeric microgranule in the first adsorption module absorption oil return, rotation is delivered in oil return afterwards Turn magnetic field and be centrifuged module；

5), rotating excitation field is centrifuged module and utilizes rotating excitation field to separate unadsorbed magnetic microparticles, returns afterwards The second adsorption module delivered to by oil；

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

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

8), the fluid of the most U-shaped separation of particles module near-wall is entered back by oil returning tube oil inlet pipe Being back to fuel tank after oil cylinder, the fluid of the pipeline center containing trace small particle microgranule is then entered by inner core Oil pipe enters inner core and carries out high-precision filtration；

9), the fluid carrying small particle microgranule flows into the helical flow path of inner core in the way of tangential influent stream, Fluid is close to filter core flow under the influence of centrifugal force, and carries out high-precision filtration；

10), the fluid after high-precision filtration enters urceolus, and fuel-displaced by the hydraulic oil bottom urceolus Mouth is discharged.

The filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention enters one Step is: the axis of described input pipe and outlet tube is the most on the same axis；Described conical damping hole opening Wider place is positioned at resonance series cavity volume I and parallel resonance cavity volume, and its taper angle is 10 °；Described cone Shape is inserted the wider place of tube opening and is positioned at resonance series cavity volume II, and its taper angle is 10 °；Described taper Mutually stagger in the position inserting pipe and conical damping hole；The internal layer of described colloid damping layer and outer layer are respectively For outer layer S type elastic thin-wall and internal layer S type elastic thin-wall, outer layer S type elastic thin-wall and internal layer S type Connected by some pillars are fixing between elastic thin-wall；Described outer layer S type elastic thin-wall and internal layer S type bullet It is filled with, in interlayer between property thin-walled, the pure water adding antifreezing agent, in pure water, is suspended with porous silicon Glue；Described colloid damping layer is connected with shell near one end of outlet tube；Described colloid damping layer is close One end of input pipe is provided with circular piston, is tightly connected between piston and colloid damping layer.

The filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention enters one Step is: described temperature control module includes heater, cooler and temperature sensor；Described heater uses The lubricating oil heater of the Chongqing gold letter with temperature detection；Surface evaporative air cooling selected by described cooler Device, the finned tube of cooler selects KLM type finned tube；Temperature sensor uses platinum resistance temperature sensing Device.

The filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention enters one Step is: described magnetized module includes aluminum matter pipeline, some windings, iron shell, flange and some Magnetizing current output module；Wherein, described some windings rotating around outside aluminum matter pipeline, each winding by Positive winding and inverse winding form；Described iron shell is coated on aluminum matter pipeline；Described flange welding exists The two ends of aluminum matter pipeline；Each magnetizing current output module is connected to a winding.

The filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention enters one Step is: described first adsorption module and the second adsorption module all use homopolarity adjacent type absorbing ring, and this is same The most adjacent type absorbing ring includes that aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony are led Magnetic cap；Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, Liang Zhetong There is 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 with reverse Solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis.

The filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention enters one Step is: described first adsorption module and the second adsorption module all use the adjacent type of homopolarity of charged hammer to inhale Follower 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 electric magnet；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 aluminum 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 electric magnet are between dividing plate；Described electric magnet connects and can promote electricity Hammer, makes electric shock hammer tap aluminium ring shape inner-walls of duct.

The filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention enters one Step is: described rotating excitation field be centrifuged module include aluminum matter pipeline, iron shell, three-phase symmetric winding, Flange and three-phase symmetrical current module；Described three-phase symmetric winding is wound on outside aluminum matter pipeline；Described ferrum Matter shell is coated on aluminum matter pipeline；Described flange welding is at the two ends of aluminum matter pipeline；Described three relative Current module is claimed to connect described three-phase symmetric winding.

The filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention enters one Step is: the bottom of described oil returning tube is provided with an overflow valve, is provided with an automatically controlled regulation spiral shell bottom this overflow valve Silk；Described overflow valve is provided with an oil drain out, and this oil drain out is connected to a fuel tank by pipeline.

The filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention enters one Step is: the bottom of described inner core is rounding mesa-shaped, and 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 filter method by structure changes operating mode adaptive-filtering, absorption and rotating excitation field of the present invention is also 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 element not occur Vibration, to improve strainability；Hydraulic oil realizes dividing of solid particle in U-shaped separation of particles module From, make the solid particle in fluid to vessel wall motion, at U-shaped separation of particles module outlet, rich in The fluid of the near-wall of solid 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 microgranule is then entered by inner core oil inlet pipe entrance inner core Row high-precision filtration, improves the service life of filter element, 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 element 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 microgranule 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 granule bottom inner core regularly can be discharged to oil returning tube by automatically controlled check-valves, thus improves filter element Service life.

2., by controlling temperature and the magnetic field intensity of hydraulic oil, make the force-magnetized gathering of the granule 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 solid 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 use structure changes operating mode adaptive-filtering, absorption and the filter of rotating excitation field of the present invention Structural representation.

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

Fig. 3 is the profile in Fig. 2 along A-A.

Fig. 4 is plug-in type H mode filter schematic diagram in Fig. 3.

Fig. 5 is plug-in type cascaded H mode filter schematic diagram in Fig. 3.

Fig. 6 is plug-in type H mode filter and plug-in type cascaded H mode filter frequency characteristic constitutional diagram. Wherein, solid line is plug-in type cascaded H mode filter frequency characteristic.

Fig. 7 is plug-in type connection in series-parallel H mode filter frequency characteristic figure.

Fig. 8 is the structural representation of S type cavity volume wave filter.

Fig. 9 is the cross sectional representation of S type elastic thin-wall.

Figure 10 is the Longitudinal cross section schematic of colloid damping layer.

Figure 11 is the schematic diagram of the U-shaped separation of particles module in Fig. 1.

Figure 12 is the structural representation of the magnetized module in Figure 11.

Figure 13 is the structural representation of the winding in Figure 12.

Figure 14 is the circuit diagram of the magnetizing current output module in Figure 12.

Figure 15 be first adsorption module (the second adsorption module) of Figure 11 be homopolarity adjacent type absorbing ring Structural representation.

Figure 16 is the homopolarity that the first adsorption module (the second adsorption module) is charged hammer in Figure 11 The structural representation of adjacent type absorbing ring.

Figure 17 is the structural representation that the rotating excitation field in Figure 11 is centrifuged module.

[detailed description of the invention]

Refer to shown in Figure of description 1 to accompanying drawing 17, the present invention be one structure changes operating mode from The filter of adaptive filtering, absorption and rotating excitation field, it is divided by base plate 6, wave filter 8, U-shaped microgranule From module 3, oil returning tube 7, inner core 15, helical flow path 17, filter element 18, outer barrel 19 and end cap Several parts compositions such as 25.Wherein, described wave filter 8, U-shaped separation of particles module 2, oil returning tube 7, Outer barrel 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, Outlet tube 811, S type elastic thin-wall 87, plug-in type H mode filter 812 and plug-in type cascaded H Several parts compositions such as mode filter 813.

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 outlet tube 811 is connected to the other end of shell 89, itself and U-shaped separation of particles module 3 Docking.Described elastic thin-wall 87 is installed in shell 89 along the radial direction of shell, forms expansion chamber in it 71 and contraction chamber 72.The axis of described input pipe 81 and outlet tube 811 the most on the same axis, this Sample can improve the filter effect of more than 10%.

Described input pipe 81, outlet tube 811 and S type elastic thin-wall 87 are collectively forming a S type cavity volume Wave filter, thus hydraulic system high frequency pressure pulsations of decaying.The filter obtained after processing by lumped-parameter method Ripple device transmission coefficient is:

$\mathrm{\γ}=\frac{1}{1+{(\frac{2\mathrm{\π}f}{Z}\·\frac{\frac{2}{3}{k}_1{D}^3+k_2{d}^{2}L}{{d_I}^2\·a})}^2}$

Velocity of sound L contraction chamber length D expansion chamber diameter Z characteristic resistance in a medium Anti-

γ transmission coefficient f pressure oscillation frequency d_IInput pipe diameter d contraction chamber Diameter

k₁Expansion chamber coefficient k₂Contraction chamber coefficient

From above formula, the class ∏ type resistance wave filter of S type cavity volume is similar with the electric capacity effect in circuit. When the pressure pulse wave of different frequency is by this wave filter, transmission coefficient is different with frequency.Frequency is more Height, then transmission coefficient is the least, and this shows that the pressure pulse wave of high frequency is decayed more when device after filtering Severity, thus serve the effect eliminating high frequency pressure pulsations.Meanwhile, the S type cavity volume knot of the present invention In structure, transitions smooth between expansion chamber and contraction chamber, contribute to reduce cavity diameter sudden change bring be The system pressure loss.The input pipe of wave filter and outlet tube the most on the same axis, can improve 10% with On filter effect.

The design principle of described S type cavity volume wave filter is as follows: when the flow of change is entered by input pipe During the expansion chamber of S type cavity volume, liquid stream exceedes average discharge, and the expansion chamber of expansion can absorb unnecessary liquid Stream, and when less than average discharge, release liquid stream, thus absorption pressure pulsation energy.Multiple expansion chamber Combination with contraction chamber then improves the fluctuation pressure absorbability of wave filter, namely filtering performance.Swollen Use curved surface to smoothly transit between swollen chamber and contraction chamber, then avoid the edge brought by fluid boundary sudden change Stroke pressure loss and heating.

Described S type elastic thin-wall 87 weakens hydraulic system medium-high frequency pressure by being forced to mechanical vibration Pulsation.The S type elastic thin-wall natural 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 S type elastic thin-walled structures coefficient h S type elastic thin-wall thickness R S type bullet Property thin-walled radius

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

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

Substitute into actual parameter, above formula is carried out simulation analysis it is found that the consolidating of S type elastic thin-wall 87 There is frequency generally high than the natural frequency of H mode filter, and its attenuation band also ratio H mode filter Wide.In relatively wide frequency band range, S type elastic thin-wall has good decay to pressure fluctuation Effect.Meanwhile, the S type elastic thin-wall radius in the filter construction of the present invention is bigger and relatively thin, its Natural frequency, closer to Mid Frequency, can realize effectively declining to the medium-high frequency pressure fluctuation in hydraulic system Subtract.

The design principle of described S type elastic thin-wall 87 is as follows: when producing intermediate frequency pressure fluctuation in pipeline, S type cavity volume is more weak to the damping capacity of pressure oscillation, flows into the periodically pulsing of wave filter S type cavity volume Pressure continuous action is on the inside and outside wall of S type elastic thin-wall, owing to there being pillar fixing even between inside and outside wall Connecing, inside and outside elastic thin-wall does periodic vibration by the frequency of fluctuation pressure simultaneously, and this forced vibration consumes The pressure fluctuation energy of fluid, thus realize the filtering of Mid Frequency pressure.From the principle of virtual work, bullet Property thin-walled potential energy when consuming the ability of fluid pulsation pressure energy and its forced vibration and kinetic energy sum Directly related, in order to improve Mid Frequency filtering performance, the radial design of elastic thin-wall is much larger than pipeline Radius, and the thickness of thin-walled is less, representative value is less than 0.1mm.

Further, between described S type elastic thin-wall 87 and shell 89 formed resonance series cavity volume I84, Resonance series cavity volume II83 and parallel resonance cavity volume 85, described cavity volume 83,84,85 is across whole Wave filter, it is hereby achieved that bigger resonance cavity volume volume, strengthens attenuating.Described series connection is altogether Shake and separated by an elastic baffle 810 between cavity volume I84 and resonance series cavity volume II83.Described S type Uniformly having some conical damping holes 86 in the axial direction of elastic thin-wall 87, described conical damping hole 86 is opened The wider place of mouth is positioned at resonance series cavity volume I84 and parallel resonance cavity volume 85, and its taper angle is 10 °. Uniformly having some tapers in the axial direction of described elastic baffle 810 and insert pipe 82, pipe is inserted in described taper 82 connection resonance series cavity volume I84 and resonance series cavity volume II83.Pipe 82 opening is inserted in described taper Wider place is positioned at resonance series cavity volume II83, and its taper angle is 10 °, and pipe 82 is inserted in described taper Mutually stagger with the position of conical damping hole 86.

Described plug-in type H mode filter 812 is positioned at parallel resonance cavity volume 85, and itself and taper damp Hole 86 is connected.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 plug-in type cascaded H mode filter 813 is positioned at resonance series cavity volume I84 and resonance series is held In the II83 of chamber, it is also connected with conical damping hole 86.After processing by lumped-parameter method, wave filter Two natural angular frequencies be:

${\mathrm{\ω}}_1=\frac{\sqrt{\mathrm{\π}}a}{\sqrt{2}\sqrt{k_1+k_2+\sqrt{{\[k_1-k_2\]}^2+\frac{4{(V_4-\frac{1}{4}{{\mathrm{\πd}}_3}^2{l}_3)}^2{l}_1{l}_3}{d_1^2{d}_3^2}}}}---\left(2\right)$

${\mathrm{\ω}}_2=\frac{\sqrt{\mathrm{\π}}a}{\sqrt{2}\sqrt{k_1+k_2-\sqrt{{\[k_1-k_2\]}^2+\frac{4{(V_4-\frac{1}{4}{{\mathrm{\πd}}_3}^2{l}_3)}^2{l}_1{l}_3}{d_1^2{d}_3^2}}}}---\left(3\right)$

Wherein:

$k_1=\frac{l_1(V_2+V_4-\frac{1}{4}{{\mathrm{\πd}}_1}^2{l}_1-\frac{1}{4}{{\mathrm{\πd}}_3}^2{l}_3)}{{d_1}^2}$

$k_2=\frac{(V_4-\frac{1}{4}{{\mathrm{\πd}}_3}^2{l}_3)l_3}{{d_3}^2}$

Velocity of sound l in a medium₁The long d of damping hole₁Damping hole diameter l₃Insert pipe range

d₃Insert pipe diameter V₂Resonance series cavity volume 1 volume V₄Resonance series cavity volume 2 volume.

Described plug-in type H mode filter 812 and plug-in type cascaded H mode filter 813 are the most symmetrically Arrange, and form plug-in type connection in series-parallel H mode filter, for broadening frequency filtering scope and make entirety More compact structure.The multiple plug-in type connection in series-parallel H mode filters of the present invention circumferentially interface distributions (figure In only depict 2), separate with dividing plate 820 each other, the resonance bands of these multiple wave filter Different, whole medium and low frequency filtering frequency range can be covered after combining, it is achieved medium and low frequency section comprehensively Entire spectrum filtering.

By Fig. 6 plug-in type H mode filter and plug-in type cascaded H mode filter frequency characteristic and formula (1) (2) (3) all can find, plug-in type cascaded H mode filter has 2 natural angular frequencies, At crest, filter effect is preferable, does not the most substantially have filter effect at trough；Plug-in type H type filters Device has 1 natural angular frequency, and at crest, filter effect is preferable equally, does not the most substantially have at trough There is filter effect；Select suitable filter parameter, make the natural angular frequency of plug-in type H mode filter Just fall between 2 natural angular frequencies of plug-in type cascaded H mode filter, as it is shown in fig. 7, both The natural reonant frequency peak value of 3 next-door neighbours is defined, in this frequency range in certain frequency range In, no matter the fluctuating frequency of pressure is at crest or all can guarantee that preferable filter effect at trough. The bank of filters that multiple plug-in type connection in series-parallel H mode filters are constituted both can cover whole medium and low frequency section, real The entire spectrum filtering of existing medium and low frequency section.

Further, the inner side of described S type elastic thin-wall 87 is provided with colloid damping layer 88.Described The internal layer of colloid damping layer 88 and outer layer are respectively outer layer S type elastic thin-wall 81 and internal layer S type is elastic Thin-walled 82, by some pillars between outer layer S type elastic thin-wall 81 and internal layer S type elastic thin-wall 82 814 fixing connections.Interlayer between outer layer S type elastic thin-wall 81 and internal layer S type elastic thin-wall 82 Inside it is filled with the pure water 816 adding antifreezing agent, in pure water 816, is suspended with Bio-sil 815.Institute State colloid damping layer 88 to be connected with shell 89 near one end of input pipe 811；Described colloid damping layer 88 are provided with circular piston 817, piston 817 and colloid damping layer 88 near one end of input pipe 811 Between be tightly connected.

Due to outer layer S type elastic thin-wall 81 with internal layer S type elastic thin-wall 82 spacing is the least and by pillar 814 fixing connections, when pressure fluctuation acts perpendicularly to thin-walled, inside and outside wall produces and is close to consistent shape Becoming, colloid damping layer thickness is kept approximately constant, and pressure fluctuation is not had damping action；Colloid damps The flow pulsation in 817 sensation level directions of piston of layer 88, when flow pulsation strengthens, piston 817 Pressurized makes colloid damping layer shrink, and squeezing action makes the water in colloid damping layer 88 defeated by nanoscale Passage is sent to enter micron order central void；When flow pulsation weakens, piston 817 by back-pressure, now glue Body damping layer expands, and the water in colloid damping layer is discharged through passage from central void.In the process, Mechanics effect, the roughness effect of channel surface molecular scale and change due to silica gel 815 microchannel sorption Learning heterogeneous body effect, piston is followed colloid damping layer and is shunk and do " gas-liquid-solid " limit in expansion process The interfactial work on boundary, thus flow systolic implementation is decayed, its substantially parallel R mode filter. This wave filter is relative to the advantage of general liquid condenser: it passes through " gas-liquid-solid " border The mode of interfactial work decay flow pulsation, a large amount of machinery can be absorbed in the case of not producing heat Can, and energy expenditure do 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 pulsing wavelength, and the plug-in type connection in series-parallel H mode filter group of wave filter more than system main pressure Cavity volume length, the length of S type cavity volume wave filter and the length of S type elastic thin-wall 87 and wave filter axis Length is equal, it is ensured that pressure peak position is constantly in the effective range of wave filter；And bore Shape damping hole 86 is opened on S type elastic thin-wall 87, is uniformly distributed in the axial direction, at elastic baffle Pipe 82, conical damping hole 86 He are inserted in the taper uniformly having multiple identical parameters in the axial direction of 810 Taper is inserted pipe 82 position and is mutually staggered so that pressure peak change in location is several to the performance of wave filter Not impact, it is achieved thereby that operating mode adaptive-filtering function.Axial in view of three kinds of filter structures Size and wave filter are suitable, and this bigger size also ensure that hydraulic filter possesses stronger pressure Pulsation damping capacity.

The method that the wave filter using the present invention carries out hydraulic pulsation filtering is as follows:

1), hydraulic fluid enters S type cavity volume wave filter by input pipe, and it is unnecessary that the cavity volume of expansion absorbs Liquid stream, completes the filtering of high frequency pressure pulsations；

2), by S type elastic thin-wall 87 forced vibration, the pressure fluctuation energy of fluid is consumed, complete Become the filtering of intermediate frequency pressure fluctuation；

3), by plug-in type connection in series-parallel H mode filter group, and conical damping hole, taper insertion pipe Produce resonance with fluid, 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, S type cavity volume filter length and S type elastic thin-wall 87 Length is equal with filter length, makes pressure peak position be constantly in the useful effect model of wave filter Enclose, it is achieved the filtering of pressure fluctuation when system 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 temperature sensing 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 bank of tubes number 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 microgranule of size, pollution abatement.

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

Described some windings 332 are rotating around outside aluminum matter pipeline 331, by a diameter of about 1.0mm Copper wire coating insullac 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 aluminum 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 aluminum 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 aluminum 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 aluminum 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 absorbability to granule.Each forward solenoid 342, reverse solenoid 343 Electric current can be different with concentration and change, to obtain optimal adsorption performance according to the size of granule.

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 Ferrum 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 aluminum 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 Electric magnet 347 is between dividing plate 345.Described electric magnet 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 absorbability to granule.Each forward solenoid 342, reverse helical Pipe 343 electric current can be different with concentration and change, to obtain best adsorption according to the size of granule Energy.And by the setting of electric shock hammer 346, prevent granule bulk deposition at irony magnetic conduction cap 344, Affect adsorption effect.Now, controlled in electric shock hammer 346 percussion pipeline 341 by electric magnet 347 Wall so that adsorbed granule 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 granule 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 granule, its by aluminum 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 aluminum Outside matter pipeline 361.Described iron shell 362 is coated on aluminum matter pipeline 361.Described flange 364 It is welded on the two ends of aluminum 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 aluminum 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 granule in fluid " divide from fluid From " out, it being gathered in aluminum 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 granule that module 36 separates.

Described demagnetization module 35 gives magnetized particles demagnetization, prevents residual magnetism microgranule 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 microgranule Han trace is logical Cross inner core oil inlet pipe 12 to enter inner core 15 and realize high-precision filtration, thus realize solid 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 element 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, solid 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 Microgranule, 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 solid 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 solid 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 microgranule 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 element 18 surface under the influence of centrifugal force, and filtrate is parallel to the surface of filter element 18 and quickly flows Dynamic, the hydraulic oil after filtration is then perpendicular to filter element 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 microgranule on filter element 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 element 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 granule 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 element 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 granule 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 element 18 blockage deteriorate, thus extend filter element 18 service life.

The processing step using above-mentioned oil filter to process backflow 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), backflow 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 microgranule 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 microgranule 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 microgranule 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 microgranule 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. with structure changes operating mode adaptive-filtering, absorption and the filter method of rotating excitation field, it is characterized in that: it uses a kind of filter, and this filter includes base plate, wave filter, U-shaped separation of particles module, oil returning tube, inner core, helical flow path, filter element, 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, outlet tube, S type elastic thin-wall, plug-in type H mode filter, plug-in type cascaded H mode filter and colloid damping layer；Wherein, described input pipe is connected to one end of shell, itself and hydraulic oil inlet docking；Described outlet tube is connected to the other end of shell, and itself and U-shaped separation of particles module are docked；Described S type elastic thin-wall is installed in shell along the radial direction of shell, forms expansion chamber and contraction chamber in it；Described input pipe, outlet tube and S type elastic thin-wall are collectively forming a S type cavity volume wave filter；Resonance series cavity volume I, resonance series cavity volume II and parallel resonance cavity volume is formed between described S type elastic thin-wall and shell；Separated by an elastic baffle between described resonance series cavity volume I and resonance series cavity volume II；Some conical damping holes are uniformly had in the axial direction of described S type elastic thin-wall；Uniformly having some tapers in the axial direction of described elastic baffle and insert pipe, pipe connection resonance series cavity volume I and resonance series cavity volume II is inserted in described taper；Described plug-in type H mode filter is positioned at parallel resonance cavity volume, and it is connected with conical damping hole；Described plug-in type cascaded H mode filter is positioned at resonance series cavity volume I and resonance series cavity volume II, and it is also connected with conical damping hole；Described plug-in type H mode filter and plug-in type cascaded H mode filter are axially symmetrical set, and form plug-in type connection in series-parallel H mode filter；Described colloid damping layer is arranged on the inner side of S type elastic thin-wall；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 element 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；

It comprises the steps:

1), the fluid in fluid pressure line passes through wave filter, the fluctuation pressure of the high, medium and low frequency range in filter attenuation hydraulic system, and suppression flowed fluctuation；

2), backflow force feed enters the temperature control module of U-shaped separation of particles module, by temperature control module regulation oil temperature to optimal magnetization temperature 40-50 DEG C, enters magnetized module afterwards；

3), by magnetizing assembly, oil return is magnetized, make micron-sized metallic particles aggregate into bulky grain, deliver to the first adsorption module afterwards；

4), by the magnetic polymeric microgranule in the first adsorption module absorption oil return, oil return afterwards is delivered to rotating excitation field and is centrifuged module；

5), rotating excitation field is centrifuged module and utilizes rotating excitation field to separate unadsorbed magnetic microparticles, and the second adsorption module is delivered in oil return afterwards；

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

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

8), the fluid of the most U-shaped separation of particles module near-wall is back to fuel tank after entering oil returning tube by oil returning tube oil inlet pipe, and the fluid of the pipeline center containing trace small particle microgranule then enters inner core by inner core oil inlet pipe and carries out high-precision filtration；

9), the fluid carrying small particle microgranule flows into the helical flow path of inner core in the way of tangential influent stream, and 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, and is discharged by the hydraulic oil oil-out bottom urceolus.

2. as claimed in claim 1 with structure changes operating mode adaptive-filtering, absorption and the filter method of rotating excitation field, it is characterised in that: the axis of described input pipe and outlet tube is the most on the same axis；The described wider place of conical damping hole opening is positioned at resonance series cavity volume I and parallel resonance cavity volume, and its taper angle is 10 °；Described taper is inserted the wider place of tube opening and is positioned at resonance series cavity volume II, 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 S type elastic thin-wall and internal layer S type elastic thin-wall, are connected by some pillars are fixing between outer layer S type elastic thin-wall and internal layer S type elastic thin-wall；It is filled with, in interlayer between described outer layer S type elastic thin-wall and internal layer S type 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 outlet tube；Described colloid damping layer is provided with circular piston near one end of input pipe, is tightly connected between piston and colloid damping layer.

3. as claimed in claim 1 with structure changes operating mode adaptive-filtering, absorption and the filter method 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. as claimed in claim 1 with structure changes operating mode adaptive-filtering, absorption and the filter method of rotating excitation field, it is characterised in that: described magnetized module includes aluminum matter pipeline, some windings, iron shell, flange and some magnetizing current output modules；Wherein, described some windings are rotating around outside aluminum matter pipeline, and each winding is made up of positive winding and inverse winding；Described iron shell is coated on aluminum matter pipeline；Described flange welding is at the two ends of aluminum matter pipeline；Each magnetizing current output module is connected to a winding.

5. as claimed in claim 1 with structure changes operating mode adaptive-filtering, absorption and the filter method 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. as claimed in claim 1 with structure changes operating mode adaptive-filtering, absorption and the filter method 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 electric magnet；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 electric magnet are between dividing plate；Described electric magnet connects and can promote electric shock hammer, makes electric shock hammer tap aluminium ring shape inner-walls of duct.

7. use structure changes operating mode adaptive-filtering, absorption and the filter method of rotating excitation field described in claim 1, it is characterised in that: described rotating excitation field is centrifuged module and includes aluminum matter pipeline, iron shell, three-phase symmetric winding, flange and three-phase symmetrical current module；Described three-phase symmetric winding is wound on outside aluminum matter pipeline；Described iron shell is coated on aluminum matter pipeline；Described flange welding is at the two ends of aluminum matter pipeline；Described three-phase symmetrical current module connects described three-phase symmetric winding.

8. use structure changes operating mode adaptive-filtering, absorption and the filter method of rotating excitation field described in claim 1, 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. use structure changes operating mode adaptive-filtering, absorption and the filter method of rotating excitation field described in claim 1, 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. use structure changes operating mode adaptive-filtering, absorption and the filter method of rotating excitation field described in claim 1, 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.