CN105864192A - Filtering method adopting full-band variable structure filtering, magnetizing and adsorbing - Google Patents

Abstract

The invention relates to a filtering method adopting full-band variable structure filtering, magnetizing and adsorbing. According to the filtering method, a filter is used for attenuating pressure/flow pulsation of hydraulic oil, and a full-band variable structure filter is adopted as the filter. Solid particles are separated through a U-type particle separation module, so that the solid particles in oil move towards the pipe wall, enter an oil return barrel through an oil return barrel oil inlet pipe and then flow back to an oil tank. Oil containing trace small-grain-size particles in the center of a pipeline enters an inner barrel through an inner barrel oil inlet pipe for high-precision filtering, and the service life of a filtering element is prolonged. The oil entering the inner barrel oil inlet pipe flows into a spiral runner of the inner barrel in a tangential inflow manner, the inner barrel wall serves as the filtering element, filtrate flows in the manner of being closely attached to the filtering element under the action of centrifugal force and fast flows parallel to the surface of the filtering element, and filtered hydraulic oil flows out to an outer barrel in the direction perpendicular to the surface of the filtering element. Pollution particles deposited at the bottom of the inner barrel are discharged to the oil return barrel through an electric control check valve, and therefore the service life of the filtering element is prolonged.

Description

A kind of filter method using the filtering of full frequency band structure changes, magnetizing and adsorb

[technical field]

The present invention relates to a kind of hydraulic oil filtering method, be specifically related to a kind of use the filtering of full frequency band structure changes, magnetization and The filter method of absorption, belongs to technical field of hydraulic equipment.

[background technology]

Statistics both domestic and external show, the fault of hydraulic system about 70%～85% is owing to oil contamination causes 's.Solid particle is then the pollutant the most universal in oil contamination, damaging effect is maximum.The liquid caused by solid grain contamination The pressure system failure accounts for the 70% of gross contamination fault.In particulate pollutant in hydraulic system oil liquid, metal filings accounting exists Between 20%～70%.Adopt an effective measure the solid grain contamination filtering in fluid, be the pass of Pollution Control in Hydraulic System Key, is also the Reliable guarantee of system safety operation.

Filter is the key element that hydraulic system filters solid grain contamination.Solid particle pollution in hydraulic oil Thing, outside the precipitable a part of larger particles of oil removal box, filters mainly by oil-filtering apparatus.Especially high pressure filtering device, mainly It is used for filtering the hydraulic oil of flow direction control valve and hydraulic cylinder, to protect the Hydraulic Elements of this kind of contamination resistance difference, therefore to liquid The cleannes of force feed require higher.

But, the high pressure filter that existing hydraulic system uses has the disadvantage that in (1) hydraulic system because of hydraulic pump Periodically oil extraction mechanism brings flow pulsation and pressure fluctuation, makes the filter core in wave filter operationally produce forced vibration, fall Low strainability；(2) cleannes of fluid are required different by all kinds of Hydraulic Elements, the particle diameter of the solia particle in fluid Size is the most different, needs for this diverse location in hydraulic system to install multiple dissimilar wave filters, thus brings Cost and the problem installing complexity；(3) filter in hydraulic system mainly uses cake filtration mode, and during filtration, filtrate is hung down Directly flowing in filter element surface, trapped solia particle forms filter cake progressive additive, the rate of filtration the most gradually under Fall, until filtrate stops flowing out, reduces the service life of filter element.

Therefore, for solving above-mentioned technical problem, the employing full frequency band structure changes filtering of a kind of innovation of necessary offer, magnetic Change and the filter method of absorption, 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, adaptability and integration Height, service life length use the filtering of full frequency band structure changes, the filter method that magnetizes and adsorb.

For achieving the above object, the technical scheme that the present invention takes is: a kind of use the filtering of full frequency band structure changes, magnetization and The filter method of absorption, it uses a kind of Rose Box, and this Rose Box includes base plate, wave filter, U-shaped separation of particles module, oil return Cylinder, 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 Bucket is sequentially placed on base plate；Described wave filter includes input pipe, shell, efferent duct, S type elastic thin-wall, H mode filter and string Connection H mode filter；Wherein, described input pipe is connected to one end of shell, itself and hydraulic oil inlet docking；Described efferent duct is even Being connected to the other end of shell, itself and U-shaped separation of particles module are docked；Outside 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, efferent duct and S type elastic thin-wall are collectively forming a S type cavity volume filter Ripple device；Some taper structure changes damping holes are uniformly had in the axial direction of described S type elastic thin-wall；Described taper structure changes damping hole It is made up of cone shaped elastic damping hole pipe and slot apertures；Resonance series cavity volume I and also is formed between described S type elastic thin-wall and shell Ally the communists the cavity volume that shakes；The outside of described resonance series cavity volume I sets a resonance series cavity volume II, described resonance series cavity volume I and series connection Insert pipe by a taper between resonance cavity volume II to connect；Described H mode filter is positioned at parallel resonance cavity volume, and itself and taper become Structural damping hole is connected；Described cascaded H mode filter is positioned at resonance series cavity volume I and resonance series cavity volume II, its also and Taper structure changes damping hole is connected；Described H mode filter and cascaded H mode filter are axially symmetrical set, and form string also Connection H mode filter；Described U-shaped separation of particles module includes a U-tube, and U-tube is sequentially installed with temperature control module, magnetization Block, adsorption module and demagnetization module；The top of described U-shaped separation of particles module and oil returning tube is by an oil returning tube oil inlet pipe even Connect；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 In inner core, 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 and enters In oil pipe, and extending into the central authorities of U-shaped separation of particles module, its diameter is less than oil returning tube oil inlet pipe diameter, and and oil returning tube enter Oil pipe coaxial is arranged；Described filter core is arranged on the inwall of inner core；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 arteries and veins of the high, medium and low frequency range in filter attenuation hydraulic system Dynamic pressure, and suppression flowed fluctuation；

2), hydraulic oil enters the temperature control module of U-shaped separation of particles module, by temperature control module regulation oil temperature to optimal magnetic Change temperature 40-50 DEG C, enter magnetized module afterwards；

3), make the metallic particles in fluid be magnetized in magnetic field by magnetizing assembly, and make micron-sized metallic particles Aggregate into bulky grain；Enter adsorption module afterwards；

4), by the magnetic polymeric particulate in adsorption module absorption oil return；Enter demagnetization module 35 afterwards；

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

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

7), the fluid carrying small particle particulate flows into the helical flow path of inner core in the way of tangential influent stream, and fluid is centrifugal It is close to filter core flow under the effect of power, and carries out high-precision filtration；

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

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is further: described input pipe With the axis of efferent duct the most on the same axis；The wider place of described taper structure changes damping hole opening is positioned at resonance series cavity volume I With in parallel resonance cavity volume, its taper angle is 10 °；The Young's modulus of described taper structure changes damping hole cone shaped elastic damping hole pipe Bigger than the Young's modulus of elastic thin-wall, can be with change in fluid pressure stretching or compression；The Young's modulus of slot apertures compares cone shaped elastic The Young's modulus of damping hole pipe wants big, can be with fluid opened by pressure or closedown；Described taper is inserted the wider place of tube opening and is positioned at string Allying the communists and shake in cavity volume II, its taper angle is 10 °.

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is further: described temperature control mould Block includes heater, cooler and temperature sensor；Described heater uses the lubricating oil of the Chongqing gold letter of band temperature detection to add Hot device；Remover for surface evaporation type air cooling selected by described cooler, and the finned tube of cooler selects KLM type finned tube；Temperature sensor is adopted Use platinum resistance temperature sensor.

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is further: described magnetization Block includes aluminium matter pipeline, some windings, iron shell, flange and some magnetizing current output modules；Wherein, described some around Group is wound on outside aluminium matter pipeline respectively, 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.

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is further: described absorption mould Block specifically uses homopolarity adjacent type absorbing ring, this homopolarity adjacent type absorbing ring to include aluminium ring shape pipeline, forward solenoid, reversely 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 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 helical Pipe and the intermediate point of reverse solenoid axis.

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is further: described absorption mould Block specifically uses the homopolarity adjacent type absorbing ring of charged hammer, and 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 is respectively arranged in aluminium ring shape pipeline, and both are connected with electric current in opposite direction so that forward solenoid is with anti- Like pole is produced to solenoid adjacent；Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, and it is just positioned at To solenoid and reverse solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis；Described dividing plate position Between forward solenoid and reverse solenoid；Described electric shock hammer and electromagnet are between dividing plate；Described electromagnet connects also Electric shock hammer can be promoted, make electric shock hammer tap aluminium ring shape inner-walls of duct.

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is further: described oil returning tube Bottom be provided with an overflow valve, be provided with an automatically controlled set screw bottom this overflow valve；Described overflow valve is provided with an oil drain out, should Oil drain out is connected to a fuel tank by pipeline.

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is further: described inner core Bottom is in rounding mesa-shaped, and 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.

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is further: described inner core Center upright 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.

The filter method using full frequency band structure changes to filter, magnetize and adsorb of the present invention is also: the precision of described filter core For 1-5 micron.

Compared with prior art, there is advantages that

1. pulsed by the pressure/flow of filter attenuation hydraulic oil, make filter core not vibrate, to improve Strainability；Hydraulic oil realizes the separation of solia particle in U-shaped separation of particles module, makes the solia particle in fluid to tube wall Motion, at U-shaped separation of particles module outlet, the fluid rich in the near-wall of solia particle is entered by oil returning tube oil inlet pipe Fuel tank it is back to, in only the fluid of the pipeline center containing trace small particle particulate is then entered by inner core oil inlet pipe after oil returning tube Cylinder carries out high-precision filtration, improves the service life of filter core, reduces filtering cost and complexity；Enter inner core oil inlet pipe Fluid 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 the tightest Patch filter core flow, filtrate is parallel to the surface of filter core and quickly flows, and the hydraulic oil after filtration is then perpendicular to cartridge surface direction stream Going out to urceolus, the particulate of cartridge surface is implemented to sweep stream effect by this cross flow filter type, it is suppressed that the increase of filter cake thickness, It is deposited on the pollution particle bottom inner core and regularly can be discharged to oil returning tube by automatically controlled check-valves, thus improve filter core and use the longevity Life.

2., by controlling the temperature of hydraulic oil and magnetic field intensity, make that the particle in fluid is force-magnetized is gathered into bulky grain, And promote colloidal particles decomposition to melt, form efficient absorption by adsorption module, by degaussing gear, residual particles demagnetization is kept away Exempt to endanger Hydraulic Elements, so that solia particle is gathered into bulky grain and moves to near-wall in fluid.

3. the generation of non-uniform magnetic-field that magnetization needs, need multipair forward and reverse coil to and pass through different size of electric current, And current values can numeral set online.

[accompanying drawing explanation]

Fig. 1 is the structural representation of the Rose Box using full frequency band structure changes to filter, magnetize and adsorb of the present invention.

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 H mode filter schematic diagram in Fig. 3.

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

Fig. 6 is H mode filter and cascaded H mode filter frequency characteristic constitutional diagram.Wherein, solid line is cascaded H mode filter Frequency characteristic.

Fig. 7 is 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 schematic diagram of taper structure changes damping hole in Fig. 2.

Figure 10 (a) to Figure 10 (c) is the working state figure of taper structure changes damping hole.

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 the adsorption module of Figure 11 be the structural representation of homopolarity adjacent type absorbing ring.

Figure 16 be the adsorption module in Figure 11 be the structural representation of the homopolarity adjacent type absorbing ring of charged hammer.

[detailed description of the invention]

Refer to shown in Figure of description 1 to accompanying drawing 16, the present invention be a kind of use the filtering of full frequency band structure changes, magnetization and The Rose Box of absorption, 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 Several parts compositions such as core 18, outer barrel 19 and end cap 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 is for inputting hydraulic oil, and the pulsation pressure of the high, medium and low frequency range that can decay in hydraulic system Power, and suppression flowed fluctuation.Described wave filter 8 is by input pipe 81, shell 88, efferent duct 89, S type elastic thin-wall 87, the filtering of H type Several parts compositions such as device 812 and cascaded H 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 docked；Described efferent duct 811 other ends being connected to shell 89, itself and U-shaped separation of particles module 3 are docked.Described S type elastic thin-wall 87 is along the footpath of shell In being installed on shell 88, in it, form expansion chamber 71 and contraction chamber 72.The axis of described input pipe 81 and efferent duct 89 does not exists On same axis, so can improve the filter effect of more than 10%.

Described input pipe 81, efferent duct 89 and S type elastic thin-wall 87 are collectively forming a S type cavity volume wave filter, thus decay Hydraulic system high frequency pressure pulsations.The filter transmission coefficient obtained after processing by lumped-parameter method 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 impedance in a medium

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

k₁Expansion chamber coefficient k₂Contraction chamber coefficient

From above formula, S type cavity volume wave filter is similar with the electric capacity effect in circuit.The pressure pulse wave of different frequency leads to When crossing this wave filter, transmission coefficient is different with frequency.Frequency is the highest, then transmission coefficient is the least, and this shows the pressure arteries and veins of high frequency Dynamic ripple is decayed the most severe when device after filtering, thus serves the effect eliminating high frequency pressure pulsations.Meanwhile, the present invention In S type holding cavity structure, transitions smooth between expansion chamber and contraction chamber, contribute to reducing the system pressure that cavity diameter sudden change brings Loss.The input pipe of wave filter and efferent duct the most on the same axis, can improve the filter effect of more than 10%.

The design principle of described S type cavity volume wave filter is as follows: when the flow of change enters the swollen of S type cavity volume by input pipe During swollen chamber, liquid flow exceedes average discharge, and the expansion chamber of expansion can absorb unnecessary liquid flow, and releases liquid when less than average discharge Stream, thus absorption pressure pulsation energy.The combination of multiple expansion chamber and contraction chamber then improves the fluctuation pressure of wave filter and absorbs Ability, namely filtering performance.Use curved surface to smoothly transit between expansion chamber and contraction chamber, then avoid by fluid boundary sudden change band That comes loses along stroke pressure and heating.

Described S type elastic thin-wall 87 weakens hydraulic system medium-high frequency pressure fluctuation by being forced to mechanical oscillation.By lump The S type elastic thin-wall intrinsic frequency that parametric method obtains after processing 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 elastic thin-wall 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 S type elastic thin-wall 87 intrinsic frequency generally than The intrinsic frequency of H mode filter is high, and its attenuation band is also wide than H mode filter.In relatively wide frequency band range, S Type elastic thin-wall has good attenuating to pressure fluctuation.Meanwhile, the S type elastic thin-wall in the filter construction of the present invention Radius is bigger and relatively thin, and its intrinsic frequency, closer to Mid Frequency, can realize having the medium-high frequency pressure fluctuation in hydraulic system Effect decay.

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 to pressure The damping capacity of fluctuation is more weak, flows into the periodically pulsing pressure continuous action of wave filter S type cavity volume at S type elastic thin-wall 87 Inside and outside wall on, owing to having between inside and outside wall, pillar is fixing to be connected, and inside and outside elastic thin-wall does week by the frequency of fluctuation pressure simultaneously Phase property is vibrated, and this forced vibration consumes the pressure fluctuation energy of fluid, thus realizes the filtering of Mid Frequency pressure.By the principle of virtual work Understanding, elastic thin-wall consumes ability and potential energy during its forced vibration and the direct phase of kinetic energy sum of fluid pulsation pressure energy Closing, in order to improve Mid Frequency filtering performance, the radial design of elastic thin-wall is much larger than pipe radius, and the thickness of thin-walled is relatively Little, representative value is less than 0.1mm.

Further, resonance series cavity volume I84 and parallel resonance are formed between described S type elastic thin-wall 87 and shell 88 Cavity volume 85.The outside of described resonance series cavity volume I84 sets a resonance series cavity volume II83, described resonance series cavity volume I84 and string Allying the communists shakes is connected by a taper insertion pipe 82 between cavity volume II83, and described taper is inserted the wider place of pipe 82 opening and is positioned at series connection altogether Shaking in cavity volume II83, its taper angle is 10 °.The resistance of some taper structure changes is uniformly had in the axial direction of described S type elastic thin-wall 87 Buddhist nun hole 86.

Described H mode filter 812 is positioned at parallel resonance cavity volume 85, and it is connected with taper structure changes damping hole 86.Institute State the wider place of taper structure changes damping hole 86 opening and be positioned at resonance series cavity volume I84 and parallel resonance cavity volume 85, its taper angle It it is 10 °.The wave filter natural angular frequency obtained after processing by lumped-parameter method is:

$\begin{array}{cc}\mathrm{\ω}=\frac{a\·D_1}{D_2}\sqrt{\frac{1}{L_1{L}_2}}& (rad/s)\end{array}$

Velocity of sound L in a medium₁The long D of damping hole₁Damping hole diameter

L₂Parallel resonance cavity volume height D₂Parallel resonance cavity volume diameter.

Described cascaded H mode filter 813 is positioned at resonance series cavity volume I84 and resonance series cavity volume II83, and it also and is bored Deformation structure damping hole 86 is connected.After processing by lumped-parameter method, two natural angular frequencies of cascaded H mode filter 813 are:

${\mathrm{\ω}}_1=\frac{\sqrt{\mathrm{\π}}a}{\sqrt{2}\sqrt{{\frac{{\mathrm{\πl}}_1({d_2}^2{l}_2+{d_4}^2{l}_4)}{4{d_1}^2}}_1+\frac{{{\mathrm{\πd}}_4}^2{l}_4{l}_3}{4{d_3}^2}+\sqrt{{\[{\frac{{\mathrm{\πl}}_1({d_2}^2{l}_2+{d_4}^2{l}_4)}{4{d_1}^2}}_1-\frac{{{\mathrm{\πd}}_4}^2{l}_4{l}_3}{4{d_3}^2}\]}^2+\frac{{\mathrm{\π}}^2{d_4}^4{l_4}^2{l}_1{l}_3}{4d_1^2{d}_3^2}}}}$

${\mathrm{\ω}}_2=\frac{\sqrt{\mathrm{\π}}a}{\sqrt{2}\sqrt{{\frac{{\mathrm{\πl}}_1({d_2}^2{l}_2+{d_4}^2{l}_4)}{4{d_1}^2}}_1+\frac{{{\mathrm{\πd}}_4}^2{l}_4{l}_3}{4{d_3}^2}-\sqrt{{\[{\frac{{\mathrm{\πl}}_1({d_2}^2{l}_2+{d_4}^2{l}_4)}{4{d_1}^2}}_1-\frac{{{\mathrm{\πd}}_4}^2{l}_4{l}_3}{4{d_3}^2}\]}^2+\frac{{\mathrm{\π}}^2{d_4}^4{l_4}^2{l}_1{l}_3}{4d_1^2{d}_3^2}}}}$

Velocity of sound l in a medium₁The long d of damping hole₁Damping hole diameter l₃Resonance pipe range

d₃Resonantron diameter l₂Resonance series cavity volume 1 height d₂Resonance series cavity volume 1 diameter

l₄Resonance series cavity volume 2 height d₄Resonance series cavity volume 2 diameter.

Described H mode filter 812 and cascaded H mode filter 813 are axially symmetrical set, and form the filtering of connection in series-parallel H type Device, for broadening frequency filtering scope and make overall structure more compact.The multiple connection in series-parallel H types of the present invention circumferentially interface distributions Wave filter (only depicts 2) in figure, separate with dividing plate 820 each other, and the resonance bands of these multiple wave filters is different, Whole medium and low frequency filtering frequency range can be covered, it is achieved the entire spectrum filtering of medium and low frequency section after combining comprehensively.

All can be found by Fig. 6 H mode filter and cascaded H mode filter frequency characteristic and formula, cascaded H mode filter has 2 Individual natural angular frequency, at crest, filter effect is preferable, does not the most substantially have filter effect at trough；H mode filter has 1 Natural angular frequency, at crest, filter effect is preferable equally, does not the most substantially have filter effect at trough；Select suitably filter Ripple device parameter, makes the natural angular frequency of H mode filter just fall between 2 natural angular frequencies of cascaded H mode filter, such as figure Shown in 7, in certain frequency range, both defined the natural reonant frequency peak value of 3 next-door neighbours, in this frequency range, no matter The fluctuating frequency of pressure is at crest or all can guarantee that preferable filter effect at trough.Multiple connection in series-parallel H mode filter structures The bank of filters become both can cover whole medium and low frequency section, it is achieved the entire spectrum filtering of medium and low frequency section.

Further, described taper structure changes damping hole 86 is made up of cone shaped elastic damping hole pipe 16 and slot apertures 15, taper Narrow end is opened on elastic thin-wall 7.Wherein the Young's modulus of cone shaped elastic damping hole pipe 16 is wanted than the Young's modulus of elastic thin-wall 7 Greatly, can be with change in fluid pressure stretching or compression；The Young's modulus of slot apertures 15 is than the Young's modulus of cone shaped elastic damping hole pipe 16 Want big, can be with fluid opened by pressure or closedown.Therefore when the fluctuating frequency of pressure falls at high band, c-type cavity volume filter construction rises Filter action, cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Figure 10 (a) state；And when ripple frequency falls at Mid Frequency Time, filter construction becomes c-type cavity volume filter construction and elastic thin-wall 7 filter structure concurs, and cone shaped elastic damps Hole pipe 16 and slot apertures 15 are all in Figure 10 (a) state；When ripple frequency falls at some specific Frequency, filter construction Become plug-in type connection in series-parallel H mode filter, c-type cavity volume filter construction and elastic thin-wall filter structure to concur, taper Elastic damping hole pipe 16 and slot apertures 15 are all in Figure 10 (b) state, due to the intrinsic frequency quilt of plug-in type connection in series-parallel H mode filter It is designed as consistent with these particular low frequency ripple frequencies, the system that fundamental frequency energy is big can be played preferable filter effect；Work as arteries and veins Dynamic frequency fall the low-frequency range beyond some CF time, cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Figure 10 (c) State.The design of such structure changes wave filter both ensure that the full frequency band full working scope filtering of hydraulic system, reduces again normal work The pressure loss of wave filter under condition, it is ensured that the hydraulic pressure rigidity of system.

The present invention can also the pulsation decay of solid line operating mode self-adaptive pressure.When hydraulic system working conditions change, both executive components Suddenly stop or running, and when the opening of valve changes, the characteristic impedance of pipe-line system can be caused to undergo mutation, so that former pipe Pressure curve with change in location in time in road changes the most therewith, then the position of pressure peak also changes.Due to the present invention The axial length of wave filter be designed as pulsing wavelength, and the 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 elastic thin-wall and wave filter axial length equal, it is ensured that pressure Peak is constantly in the effective range of wave filter；And the taper structure changes damping hole of connection in series-parallel H mode filter is opened On elastic thin-wall, be uniformly distributed in the axial direction so that pressure peak change in location to the performance of wave filter almost without shadow Ring, it is achieved thereby that operating mode adaptive-filtering function.Suitable in view of three kinds of filter structure axial dimensions and wave filter, this is relatively Big size also ensure that hydraulic filter possesses stronger pressure fluctuation damping capacity.

The method that the hydraulic 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 the cavity volume of expansion absorbs unnecessary liquid flow, completes height The filtering of pressure fluctuation frequently；

2), by S type elastic thin-wall 87 forced vibration, consume the pressure fluctuation energy of fluid, complete intermediate frequency pressure fluctuation Filtering；

3), by connection in series-parallel H mode filter group, and taper structure changes damping hole, taper insertion pipe and fluid produce altogether Shake, 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 the filter of connection in series-parallel H type Ripple device length, S type cavity volume filter length and S type elastic thin-wall 87 length are equal with filter length, make pressure peak position It is constantly in the effective range of wave filter, it is achieved the filtering of pressure fluctuation when system condition changes；

5), by the flexible of the cone shaped elastic damping hole pipe of taper structure changes damping hole and the switch of slot apertures, pressure is completed Pulsation adaptive-filtering.

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, magnetization Module 33, adsorption module 34 and demagnetization module 35.

Described temperature control module 32 main purpose is to provide optimal magnetization temperature 40-50 DEG C, also for magnetized module 33 simultaneously Having the effect of fluid viscosity reduction concurrently, it includes heater, cooler and temperature sensor.Described heater uses band temperature detection The lubricating oil heater of Chongqing gold letter.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, uses light pipe, and fluid resistance is little；Cooler fin type is high wing, and finned tube selects KLM type finned tube, heat transfer Performance is good, and thermal contact resistance is little, and fin and pipe contact area are big, and closely, firmly, it is good to bear cold and hot sudden turn of events ability, fin in laminating Root weather-resistant performance is high；The pipe row optimum of air cooler is 8.Described temperature sensor uses platinum resistance temperature sensing Device.

Described magnetized module 33 realizes the force-magnetized of metallic particles, and makes micron-sized metallic particles aggregate into big Grain, it is simple to subsequent adsorbtion separates.Magnetized module 32 it is also required to provide non-uniform magnetic-field simultaneously, enters the colloidal particles in hydraulic oil Row magnetization is decomposed, the particulate making colloid particulate breakup be smaller particle size, pollution abatement.

Described magnetized module 33 is by aluminium matter pipeline 331, some windings 332, iron shell 333, flange 334 and some magnetic Galvanic current output module 335 forms.Wherein, described aluminium matter pipeline 331 makes fluid flow there through and by magnetization treatment, and aluminium Magnetic conductivity the lowest, can make pipeline 331 obtains higher magnetic field intensity.

Described some windings 332, rotating around outside aluminium matter pipeline 331, are coated insulation by the copper wire of a diameter of about 1.0mm Paint is made.Each winding 332 is all separate setting, is controlled by corresponding magnetizing current output module 335 respectively, Qi Zhong electricity Flow and need different according to system.Separate owing to often enclosing winding 332, its exit can cause the electric current that this coil forms Ring is not real " justifying ", but has individual breach, and this can cause the radial distribution of aluminium matter pipeline 331 internal magnetic field uneven, thus Affect magnetic efficiency.For solving this problem, the often circle winding 332 of this creation is all made up of positive winding 336 and inverse winding 337, mesh Be to produce the magnetic field in same polarity direction and to make up the magnetic field that breach causes unbalanced simultaneously.In positive winding and inverse winding Size of current is equal.Aluminium matter pipeline 331 axis direction is arranged with multipair forward and reverse winding, by different electric currents, in order to shape Become the non-uniform magnetic-field of aforementioned claim.

Described iron shell 333 is coated on aluminium matter pipeline 331, and the material of irony can mask most magnetic flux.Institute State flange 334 and be 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 time modifying resistance Feature, it is achieved the real-time control of non-uniform magnetic-field.The circuit theory diagrams of described magnetizing current output module 335 can be found in accompanying drawing 5, Its digital potentiometer used is AD5206, has the defeated of 6 passages.Amplifier AD8601 and metal-oxide-semiconductor 2N7002 are real by negative-feedback Show the output of high-precision voltage follow.Constant High-current output have employed the high voltage of Texas Instrument (TI), the fortune of big electric current Put OPA 549.

Described adsorption module 34 is for adsorbing the big particulate of magnetic polymeric after magnetized module 33 magnetizes, and it can use homopolarity Adjacent type absorbing ring, this homopolarity adjacent type absorbing ring is by aluminium ring shape pipeline 341, forward solenoid 342, reverse solenoid 343 And the parts such as irony magnetic conduction cap 344 composition.Wherein, described forward solenoid 342 and reverse solenoid 343 are respectively arranged in aluminium Matter circulating line 341, both are connected with electric current in opposite direction so that forward solenoid 342 and reverse solenoid 343 adjacent produce Raw like pole.Described irony magnetic conduction cap 344 is arranged on the inwall of aluminium ring shape pipeline 341, and it is positioned at forward solenoid 342 With 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, reverse solenoid 343, phase Adjacent forward solenoid 342, reverse solenoid 343 are connected with electric current in opposite direction so that forward solenoid 342, reverse helical Pipe 343 adjacent produces like pole；Meanwhile, aluminium ring shape pipeline 341 can improve magnetic circuit, strengthens the magnetic field at inner-walls of duct Intensity, strengthens the irony 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, the homopolarity adjacent type absorbing ring that described adsorption module 34 may be used without charged hammer, this charged hammer Homopolarity adjacent type absorbing ring by aluminium ring shape pipeline 341, forward solenoid 342, reverse solenoid 343, irony magnetic conduction cap 344, dividing plate 345, the parts such as hammer 346 and electromagnet 347 that shock by electricity form.Wherein, described forward solenoid 342 and reverse helical Pipe 343 is respectively arranged in aluminium ring shape pipeline 341, and both are connected with electric current in opposite direction so that forward solenoid 342 is with reverse Solenoid 343 adjacent produces like pole.Described irony magnetic conduction cap 344 is arranged on the inwall of aluminium ring shape pipeline 341, its It is positioned at forward solenoid 342 and reverse solenoid 343 adjacent and forward solenoid 342 and reverse solenoid 343 axis Intermediate point.Described electric shock hammer 346 and electromagnet 347 are between dividing plate 345.Described electromagnet 347 connects and can promote electric shock Hammer 346, makes 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 spiral shell Spool 343, adjacent forward solenoid 342, reverse solenoid 343 are connected with electric current in opposite direction so that forward solenoid 342, reverse solenoid 343 adjacent produces like pole；Meanwhile, aluminium ring shape pipeline 341 can improve magnetic circuit, strengthens pipeline Magnetic field intensity at inwall, strengthens the irony magnetic conduction cap 344 capture adsorption capacity to particle.Each forward solenoid 342, reverse spiral shell Spool 343 electric current can be different with concentration and change, to obtain optimal adsorption performance according to the particle size of particle.And by electric shock The setting of hammer 346, prevents particle bulk deposition at irony magnetic conduction cap 344, affects adsorption effect.Now, by electromagnet 347 Control the inwall of electric shock hammer 346 percussion pipeline 341 so that adsorbed particle scatter to both sides.Meanwhile, pipeline is being cleaned When 341, the percussion of electric shock hammer 346 can also improve cleaning performance.

Described adsorption module 34 is designed to U-shaped, and when fluid enters U-shaped absorption pipeline, particle is at gravity, the work of centrifugal force Under with, to side, tube wall moves, and plus magnetic field force effect, moves radially speed and accelerates, and the efficiency of granular absorption is improved； Fluid leave U-shaped absorption pipeline rise time, making a concerted effort so that the diagonally lower direction motion of particle, prolongation of gravity and magnetic field force The numerical density time, improve the efficiency of granular absorption.

Described demagnetization module 35 gives magnetized particles demagnetization, prevents residual magnetism particulate from entering hydraulic pressure by oil returning tube oil inlet pipe Loop, sensitive to pollution Hydraulic Elements cause damage.

The top of described U-shaped separation of particles module 3 and oil returning tube 7 is connected by an oil returning tube oil inlet pipe 22；By U-shaped micro- After grain separation module 3 processes, the fluid of U-tube 31 near-wall, rich in aggregated particles, is entered back by oil returning tube oil inlet pipe 22 It is back to fuel tank after oil cylinder 7.

The bottom of described oil returning tube 7 is provided with an overflow valve 2, is provided with an automatically controlled set screw 9 bottom this overflow valve 2；Described Overflow valve 2 is provided with an oil drain out 10, and this oil drain out 10 is connected to a fuel tank 11 by pipeline 20.

Described inner core 15 is placed in outer barrel 19, if it is installed on end cap 25 by a top board 13 and bolt stem 21.Institute State helical flow path 17 to be contained in inner core 15, connected by an inner core oil inlet pipe 12 between itself and U-shaped separation of particles module 3, tool Saying of body, described inner core oil inlet pipe 12 and the tangent connection of helical flow path 17.The fluid of the U-tube 31 pipeline center only granule Han trace Footpath particulate, enters inner core 15 by inner core oil inlet pipe 12 and realizes 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 the central authorities of U-shaped separation of particles module 3, its diameter Less than oil returning tube oil inlet pipe 22 diameter, and it is coaxially disposed with oil returning tube oil inlet pipe 22.

Further, the bottom of described inner core 15 is rounding mesa-shaped, and it is connected by an inner core oil exit pipe 23 and oil returning tube 7 Connecing, inner core oil exit pipe 23 is provided with an automatically controlled check-valves 24.The center upright of described inner core 15 is provided with a hollow cylinder 16, hollow Cylinder 16 be arranged over pressure difference indicator 14, this 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, the hydraulic oil that will have been filtered by hydraulic oil oil-out 5 Discharge.

In the present invention, owing to U-shaped separation of particles module 3 is to solia particle separation of polymeric effect in fluid, at U-shaped particulate In the fluid in separation module 3 exit, the fluid at the center only small particle particulate Han trace, this part fluid is from inner core oil inlet pipe 12 It is flowed into inner core 15 and carries out high-precision filtration；And the fluid of near-wall is rich in aggregated particles, this part fluid passes through oil returning tube Oil inlet pipe 22 enters oil returning tube 7, then flows back to fuel tank 11 through the oil drain out 10 of overflow valve 2, thus realizes solia particle by particle Footpath shunting filtering.Herein, oil returning tube 7 and overflow valve 2 serve aforesaid macrofiltration, thus save filter number, fall Low system cost and complexity.The automatically controlled set screw 9 of overflow valve 2 is used for regulating oil pressure relief, is adjusted to by its pressure slightly Less than pressure at filtering outlet, to ensure inner core 15 filtering traffic.

It addition, traditional filter mainly uses cake filtration mode, during filtration, filtrate is perpendicular to filter element surface stream Dynamic, trapped solia particle forms filter cake progressive additive, and the rate of filtration is gradually reduced the most therewith, until filtrate stops stream Go out, reduce the service life of filter element.In this present invention, carry the filtrate of small particle particulate from inner core oil inlet pipe 12 Flowing into the helical flow path 17 of inner core 15 in the way of tangential influent stream, inner core 15 wall of helical duct 17 side is high-precision filter element 18, filtrate 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, after filtration Hydraulic oil is then perpendicular to filter core 18 surface direction and flows out to urceolus 19, and the direction of the two flowing is orthogonal staggered, therefore claims it Filter for cross flow.The quickly flowing of filtrate is applied with shearing to the particulate being gathered in filter core 18 surface and sweeps stream effect, thus presses down Having made the increase of filter cake thickness so that rate of filtration near constant, filter pressure also will not raise with the passing of time, filter core Service life thus increase substantially.Along with the accumulation of filtration time, it is deposited on the pollution particle bottom inner core 15 inverted round stage Being stepped up, the rate of filtration slowly declines, and in inner core 15, unfiltered filtrate rises along the hollow cylinder 16 at center, now, and 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 and reduce oil pressure relief, and open check-valves 24 simultaneously, make bottom inner core 15 containing more pollution particle Filtrate is discharged to oil returning tube 7 by inner core oil exit pipe 23 under differential pressure action, it is to avoid bottom, filter core 18 blockage deteriorates, from And 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 passes through wave filter 8, the high, medium and low frequency range that wave filter 8 is decayed in hydraulic system Fluctuation pressure, and suppression flowed fluctuation；

2), hydraulic oil enters the temperature control module 32 of U-shaped separation of particles module 3, regulates oil temperature to by temperature control module 32 Good magnetization temperature 40-50 DEG C, enters magnetized module 33 afterwards；

3), make the metallic particles in fluid be magnetized in magnetic field by magnetized module 33, and make micron-sized metal Grain aggregates into bulky grain；Enter adsorption module 34 afterwards；

4), the magnetic polymeric particulate in oil return is adsorbed by adsorption module 34；Enter demagnetization module 35 afterwards；

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

6), the fluid of U-shaped separation of particles module 3 near-wall refluxes after entering oil returning tube 7 by oil returning tube oil inlet pipe 22 To fuel tank, the fluid of the pipeline center containing trace small particle particulate then enters inner core 15 by inner core oil inlet pipe 12 and carries out high-precision Spend filter；

7), the fluid carrying small particle particulate flows into the helical flow path 17 of inner core 15 in the way of tangential influent stream, and fluid exists It is close to filter core flow under the effect of centrifugal force, and carries out high-precision filtration；

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

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

Claims (10)

1. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb, it is characterised in that: it uses a kind of filtration Case, this Rose Box 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, S type elastic thin-wall, H mode filter and cascaded H mode filter；Wherein, described input pipe connects In one end of shell, itself and hydraulic oil inlet docking；Described efferent duct is connected to the other end of shell, and itself and U-shaped particulate divide Dock from module；Described S type elastic thin-wall is installed in shell along the radial direction of shell, forms expansion chamber and contraction chamber in it；Institute State input pipe, efferent duct and S type elastic thin-wall and be collectively forming a S type cavity volume wave filter；The axial of described S type elastic thin-wall goes up all Even have some taper structure changes damping holes；Described taper structure changes damping hole is made up of cone shaped elastic damping hole pipe and slot apertures； Resonance series cavity volume I and parallel resonance cavity volume is formed between described S type elastic thin-wall and shell；Described resonance series cavity volume I Outside set a resonance series cavity volume II, between described resonance series cavity volume I and resonance series cavity volume II by one taper insert Pipe connects；Described H mode filter is positioned at parallel resonance cavity volume, and it is connected with taper structure changes damping hole；Described 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 taper structure changes damping hole；Described H Mode filter and cascaded H mode filter are axially symmetrical set, and form connection in series-parallel H mode filter；Described U-shaped separation of particles mould Block includes a U-tube, and U-tube is sequentially installed with temperature control module, magnetized module, adsorption module and demagnetization module；Described U-shaped The top of 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, and it passes through one If top board and bolt stem are installed on end cap；Described helical flow path is contained in inner core, between itself and U-shaped separation of particles module Connected by an inner core oil inlet pipe；Described inner core oil inlet pipe is positioned at oil returning tube oil inlet pipe, and extends into U-shaped separation of particles module Central authorities, its diameter be 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 inner core Inwall on；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 pulsation pressure of the high, medium and low frequency range in filter attenuation hydraulic system Power, and suppression flowed fluctuation；

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

3), make the metallic particles in fluid be magnetized in magnetic field by magnetizing assembly, and make micron-sized metallic particles be polymerized Become bulky grain；Enter adsorption module afterwards；

4), by the magnetic polymeric particulate in adsorption module absorption oil return；Enter demagnetization module 35 afterwards；

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

6), the fluid of 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 particulate then enters inner core by inner core oil inlet pipe and carries out high-precision filtration；

7), the fluid carrying small particle particulate flows into the helical flow path of inner core in the way of tangential influent stream, and fluid is at centrifugal force It is close to filter core flow under effect, and carries out high-precision filtration；

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

2. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed in claim 1, it is characterised in that: The axis of described input pipe and efferent duct is the most on the same axis；The wider place of described taper structure changes damping hole opening is positioned at series connection In resonance cavity volume I and parallel resonance cavity volume, its taper angle is 10 °；Described taper structure changes damping hole cone shaped elastic damping hole pipe Young's modulus bigger than the Young's modulus of elastic thin-wall, can be with change in fluid pressure stretching or compression；The Young's modulus of slot apertures Bigger than the Young's modulus of cone shaped elastic damping hole pipe, can be with fluid opened by pressure or closedown；Described taper inserts tube opening relatively Being positioned at resonance series cavity volume II at Kuan, its taper angle is 10 °.

3. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed in claim 1, it is characterised in that: Described temperature control module includes heater, cooler and temperature sensor；Described heater uses the Chongqing gold letter of band temperature detection Lubricating oil heater；Remover for surface evaporation type air cooling selected by described cooler, and the finned tube of cooler selects KLM type finned tube；Temperature Degree sensor uses platinum resistance temperature sensor.

4. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed in claim 1, it is characterised in that: Described magnetizing assembly 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 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. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed in claim 1, it is characterised in that: Described adsorption module specifically uses 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 In pipeline, both are connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce like pole；Institute State irony magnetic conduction cap to be arranged on the inwall of aluminium ring shape pipeline, its be positioned at forward solenoid and reverse solenoid adjacent, with And forward solenoid and the intermediate point of reverse solenoid axis.

6. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed in claim 1, it is characterised in that: Described adsorption module specifically uses the homopolarity adjacent type absorbing ring of charged hammer, the homopolarity adjacent type absorbing ring bag 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 just Being respectively arranged in aluminium ring shape pipeline to solenoid and reverse solenoid, 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 the inwall of aluminium ring shape pipeline On, 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 electricity Magnet connects and can promote electric shock hammer, makes electric shock hammer tap aluminium ring shape inner-walls of duct.

7. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed 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 One oil drain out, this oil drain out is connected to a fuel tank by pipeline.

8. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed in claim 1, it is characterised in that: 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, and inner core oil exit pipe is provided with an electricity Control check-valves.

9. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed in claim 1, it is characterised 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 pacify It is loaded on end cap；Described inner core oil inlet pipe and the tangent connection of helical flow path.

10. the filter method using the filtering of full frequency band structure changes, magnetizing and adsorb as claimed in claim 1, it is characterised in that: The precision of described filter core is 1-5 micron.