CN105864184A - Method for filtering by adoption of full-band variable structure working condition self-adaptive wave filtering, electrification and adsorption - Google Patents

Abstract

The invention relates to a method for filtering by adoption of full-band variable structure working condition self-adaptive wave filtering, electrification and adsorption. According to the method, the pressure/flow pulsation of hydraulic oil is dampened through a filter, and a full-band variable structure working condition self-adaptive wave filter is adopted; solid particle separation is achieved through a U-shaped particle separation module, so that solid particles in an oil liquid move towards a pipe wall, the oil liquid rich in solid particles and near the pipe wall enters an oil return cylinder through an oil return cylinder module and then backflows to an oil tank, the oil liquid containing trace amounts of small-sized particles and existing at the pipe center enters an inner cylinder through an inner cylinder oil inlet pipe for high-precision filtering, and the service life of a filtering core is prolonged, and the wave filtering cost and complexity can be reduced; the oil liquid entering the inner cylinder oil inlet pipe flows into the spiral flow channel of the inner cylinder in a tangential inflow manner, and the inner cylinder wall is taken as the filtering core, so that a filtrate flows while clinging to the filtering core under the action of centrifugal force, that is, the filtrate quickly flows parallel to the surface of the filtering core, and the filtered hydraulic oil outflows into an outer cylinder in the direction perpendicular to the surface of the filtering core; and pollution particles depositing at the bottom of the inner cylinder can be regularly discharged into the oil return cylinder through an electric control check valve, so that the service life of the filtering core can be prolonged.

Description

With full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb

[technical field]

The present invention relates to a kind of hydraulic oil filtering method, be specifically related to one full frequency band structure changes operating mode Adaptive-filtering, the filter method electrifying and adsorbing, 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 solving above-mentioned technical problem, becoming with full frequency band of a kind of innovation of necessary offer is tied Structure operating mode adaptive-filtering, the filter method electrifying and adsorbing, of the prior art described scarce to overcome Fall into.

[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 with full frequency band structure changes operating mode adaptive-filtering, electrify and inhale Attached filter method.

For achieving the above object, the technical scheme that the present invention takes is: by full frequency band structure changes operating mode certainly Adaptive filtering, the filter method electrifying and adsorbing, it uses a kind of filter plant, and filter plant includes Base plate, wave filter, U-shaped separation of particles module, oil returning tube, inner core, helical flow path, filter element, outer Bucket and end cap；Wherein, described wave filter, U-shaped separation of particles module, oil returning tube, outer barrel are successively It is placed on base plate；Described wave filter includes input pipe, shell, outlet tube, corrugated tube and S type bullet Property thin-walled；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 defeated Enter pipe, outlet tube and S type elastic thin-wall and be collectively forming a S type cavity volume wave filter；Described S type is elastic The resonance cavity volume of cylinder is formed between thin-walled and shell；The axial of described S type elastic thin-wall goes up uniformly Have some taper structure changes damping holes, taper structure changes damping hole connection resonance cavity volume；Described taper Structure changes damping hole is made up of cone shaped elastic damping hole pipe and slot apertures；Described corrugated tube is wound in the shape of a spiral Outside resonance cavity volume, insert pipe with resonance cavity volume by multiple tapers and connect；Between described corrugated tube respectively encloses Being connected by some arms, arm is provided with switch；Described corrugated tube and resonance cavity volume composition plug-in type Spiral isomery cascaded H mode filter；Described U-shaped separation of particles module includes a U-tube, U-shaped Be sequentially installed with electrification module on pipe, separation module, the first adsorption module, rotating excitation field are centrifuged module, Second adsorption module and demagnetization module；The top of described U-shaped separation of particles module and oil returning tube passes through one Oil returning tube oil inlet pipe connects；Described inner core is placed in outer barrel, if it is pacified by a top board and bolt stem It is loaded on end cap；Described helical flow path is contained in inner core, logical between itself and U-shaped separation of particles module Cross an inner core oil inlet pipe to connect；Described inner core oil inlet pipe is positioned at oil returning tube oil inlet pipe, and extends into U The central authorities of type separation of particles module, its diameter is less than oil returning tube oil inlet pipe diameter, and and oil returning tube oil-feed Pipe is coaxially disposed；Described filter element is arranged on the inwall of inner core, and its precision is 1-5 micron；Outside described The bottom of bucket is provided with a hydraulic oil oil-out；

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 electrification module of U-shaped separation of particles module, makes the granule in fluid Material is charged, delivers to separation module afterwards；

3), the charged corpuscle in fluid is made to be polymerized to tube wall under the effect of external force by segregation apparatus, The first adsorbent equipment is delivered in oil return 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 present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs enters One step is: the axis of described input pipe and outlet tube is the most on the same axis；Described taper structure changes hinders The wider place of opening, Buddhist nun hole is positioned at resonance cavity volume, and its taper angle is 10 °；Described taper structure changes damps The Young's modulus of hole cone shaped elastic damping hole pipe is bigger than the Young's modulus of elastic thin-wall, can be with fluid pressure Power change stretching or compression；The Young's modulus of slot apertures is wanted than the Young's modulus of cone shaped elastic damping hole pipe Greatly, can be with fluid opened by pressure or closedown；Described taper is inserted the wider place of tube opening and is positioned at corrugated tube, Its taper angle is 10 °.

The present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs enters One step is: described electrification module includes some electrodes and an electrode controller；Described some electrodes are pacified Being loaded in U-tube, it is respectively connecting to electrode controller.

The present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs enters One step is: described separation module uses uniform magnetic field separation module, and this uniform magnetic field separation module includes Aluminum matter pipeline, two magnetic poles and magnetic pole controller；Wherein, said two magnetic pole is separately positioned on aluminum On matter pipeline, the opposite polarity of these two magnetic poles, and in being oppositely arranged；Said two magnetic pole electricity respectively Property is connected on magnetic pole controller.

The present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs enters One step is: described separation module uses rotating excitation field separation module, and this rotating excitation field separation module includes Aluminum matter pipeline, iron shell, three-phase symmetric winding and three-phase symmetrical current module；Described three relative Winding is claimed to be wound on outside aluminum matter pipeline；Described iron shell is coated on aluminum matter pipeline；Described three-phase symmetrical Current module connects described three-phase symmetric winding.

The present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs enters One step is: described separation module uses helical pipe magnetic field separation module, this helical pipe magnetic field separation Module includes aluminum matter helical pipe, solenoid and solenoid control circuit；Wherein, described aluminum matter spiral shell Coil road is arranged in solenoid；Described solenoid and solenoid control circuit are electrically connected with.

The present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs enters One step is: described first adsorption module and second is inhaled adsorption module and used homopolarity adjacent type absorbing ring, should Homopolarity adjacent type absorbing ring includes aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony Magnetic conduction cap；Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, both It is connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce same sex magnetic Pole；Described irony magnetic conduction cap is arranged on the inwall of aluminium ring shape pipeline, its be positioned at forward solenoid and Reverse solenoid adjacent and forward solenoid and the intermediate point of reverse solenoid axis.

The present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs enters One step is: described first adsorption module and second is inhaled adsorption module and used the adjacent type of homopolarity of charged hammer Absorbing ring, the homopolarity adjacent type absorbing ring of this charged hammer include aluminium ring shape pipeline, forward solenoid, Reverse solenoid, irony magnetic conduction cap, dividing plate, electric shock hammer and 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 present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs 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 present invention with full frequency band structure changes operating mode adaptive-filtering, electrify and the filter method that adsorbs also For: 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；Described inner core Bottom be rounding mesa-shaped, it is connected by an inner core oil exit pipe and oil returning tube, and inner core oil exit pipe sets There is an automatically controlled check-valves；The center upright of described inner core is provided with a hollow cylinder, the top of hollow cylinder Being provided with pressure difference indicator, this pressure difference indicator is installed on end cap；Described inner core oil inlet pipe and spiral flow The tangent connection in road.

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 the temperature of hydraulic oil and making the particulate matter band in fluid to electrode applying voltage Electropolymerization, and promote colloidal particles decomposition to melt；Efficient absorption is formed by adsorption module；Utilize rotation Turn magnetic field " separated " and gather near-wall by the molecule in fluid, capture with adsorbent equipment Molecule；Avoid endangering Hydraulic Elements to residual particles demagnetization by degaussing gear, so that fluid Middle solid particle is gathered into bulky grain and moves 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 be the present invention with full frequency band structure changes operating mode adaptive-filtering, the filtration that electrifies and adsorb The structural representation of equipment.

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

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

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

Fig. 5 is the structural representation of S type cavity volume wave filter.

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

Fig. 7 is the schematic diagram of taper structure changes damping hole in Fig. 3.

Fig. 7 (a) to Fig. 7 (c) is the working state figure of taper structure changes damping hole.

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

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

Figure 10 be the separation module in Fig. 8 be the structural representation of uniform magnetic field separation module.

Figure 11 be the separation module in Fig. 8 be the structural representation of rotating excitation field separation module.

Figure 12 be the separation module in Fig. 8 be the structural representation of helical pipe magnetic field separation module.

Figure 13 be the first adsorption module (the second adsorption module) in Fig. 8 be homopolarity adjacent type absorption The structural representation of ring.

Figure 14 is the homopolarity that the first adsorption module (the second adsorption module) is charged hammer in Fig. 8 The structural representation of adjacent type absorbing ring.

Figure 15 is the structural representation that the rotating excitation field in Fig. 8 is centrifuged module.

[detailed description of the invention]

Referring to shown in Figure of description 1 to accompanying drawing 15, the present invention is one full frequency band structure changes Operating mode adaptive-filtering, the filter plant electrifying and adsorbing, it is by base plate 6, wave filter 8, U-shaped micro- Grain separation module 3, oil returning tube 7, inner core 15, helical flow path 17, filter element 18, outer barrel 19 and Several parts compositions such as end cap 25.Wherein, described wave filter 8, U-shaped separation of particles module 2, oil return Cylinder 7, outer barrel 19 are 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 88, Several parts compositions such as outlet tube 89, corrugated tube 83 and S type elastic thin-wall 87.

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 S type elastic thin-wall 87 is installed in shell 88 along the radial direction of shell, is formed swollen in it Swollen chamber 71 and contraction chamber 72.The axis of described input pipe 81 and outlet tube 89 the most on the same axis, So can improve the filter effect of more than 10%.

Described input pipe 81, outlet tube 89 and S type elastic thin-wall 87 are collectively forming a S type cavity volume filter Ripple device, thus hydraulic system high frequency pressure pulsations of decaying.The filtering obtained after processing by lumped-parameter method 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, S type cavity volume wave filter is similar with the electric capacity effect in circuit.Different frequency When pressure pulse wave is by this wave filter, transmission coefficient is different with frequency.Frequency is the highest, then transmission Coefficient is the least, and this shows that the pressure pulse wave of high frequency is decayed the most severe when device after filtering, thus Serve the effect eliminating high frequency pressure pulsations.Meanwhile, in the S type holding cavity structure of the present invention, expand Transitions smooth between chamber and contraction chamber, contributes to reducing the system pressure damage that cavity diameter sudden change brings Lose.

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, Double-pipe plug-in type cavity volume wave filter is more weak to the damping capacity of pressure oscillation, flows into Double-pipe plug-in type cavity volume Periodically pulsing pressure continuous action on the inside and outside wall of S type elastic thin-wall, between inside and outside wall Having the fixing connection of pillar, inside and outside S type elastic thin-wall does periodic vibration by the frequency of fluctuation pressure simultaneously, This forced vibration consumes the pressure fluctuation energy of fluid, thus realizes the filtering of Mid Frequency pressure.By void Merit principle understands, when S type elastic thin-wall consumes ability and its forced vibration of fluid pulsation pressure energy Potential energy and kinetic energy sum directly related, in order to improve Mid Frequency filtering performance, S type elastic thin-wall Radial design is much larger than pipe radius, and the thickness of thin-walled is less, and representative value is less than 0.1mm.

Further, the resonance forming cylinder between described S type elastic thin-wall 87 and shell 88 is held Chamber 85.Some taper structure changes damping holes 86 are uniformly had in the axial direction of described S type elastic thin-wall 87, To ensure all to realize plug-in type connection in series-parallel filtering in the range of whole wave filter.Taper structure changes hinders Buddhist nun hole 86 connection resonance cavity volume 85.The wider place of described taper structure changes damping hole opening is positioned at resonance and holds Intracavity, its taper angle is 10 °, for broadening frequency filtering scope, after processing by lumped-parameter method To wave filter natural angular frequency be:

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

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

Described corrugated tube 83 is wound on outside resonance cavity volume 85 in the shape of a spiral, and resonance cavity volume 85 is by many Individual taper is inserted pipe 82 and is connected.Described taper is inserted the wider place of pipe 82 opening and is positioned at corrugated tube 83, Its taper angle be 10 ° for broadening frequency filtering scope.If described corrugated tube 83 passes through between respectively enclosing Heavenly Stems and Earthly Branches pipe 810 connects, and arm 810 is provided with switch 84.Described corrugated tube 83 and resonance cavity volume 85 Composition plug-in type spiral isomery cascaded H mode filter.

From the figure 3, it may be seen that cascaded H mode filter has 2 natural angular frequencies, filter effect at crest Preferably, at trough, the most substantially do not has filter effect；Plug-in type spiral isomery cascaded H mode filter In have employed corrugated tube 83 structure of spiral isomery, corrugated tube itself has elasticity, works as hydraulic system Flow and pressure fluctuation through corrugated tube, fluid media (medium) causes the vibration of hydraulic pressure-spring system, offsets Wave energy, thus play filter action；Meanwhile, the some arms 810 between each circle corrugated tube 83 Connection or disconnection, cause interference and the superposition of ripple, thus the frequency changing cascaded H mode filter be special Property；Reasonable arrangement filter parameter and the connection quantity of arm and position, can make cascaded H type filter The trough of the frequency characteristic of device is raised, and makes wave filter have good filtering at whole medium and low frequency Duan Jun Can, it is achieved the entire spectrum filtering of medium and low frequency section.

Further, described taper structure changes damping hole 86 is by cone shaped elastic damping hole pipe 16 and slot apertures 15 compositions, taper narrow end is opened on elastic thin-wall 7.The wherein poplar of cone shaped elastic damping hole pipe 16 The Young's modulus of family name's modular ratio elastic thin-wall 7 wants big, can be with change in fluid pressure stretching or compression；Seam The Young's modulus in hole 15 is bigger than the Young's modulus of cone shaped elastic damping hole pipe 16, can be with fluid pressure It is turned on and off.Therefore when the fluctuating frequency of pressure falls at high band, S type cavity volume filter construction plays filter Ripple effect, cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Fig. 7 (a) state；And when pulsation Frequency falls when Mid Frequency, and filter construction becomes S type cavity volume filter construction and elastic thin-wall 7 is filtered Wave structure concurs, and cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Fig. 7 (a) state； When ripple frequency falls at some specific Frequency, filter construction becomes plug-in type connection in series-parallel H Mode filter, S type cavity volume filter construction and elastic thin-wall filter structure concur, Conical Projectile Property damping hole pipe 16 and slot apertures 15 all in Fig. 7 (b) state, owing to plug-in type connection in series-parallel H type is filtered The natural frequency of ripple device is designed to consistent with these particular low frequency ripple frequencies, big to fundamental frequency energy System can play preferable filter effect；When ripple frequency falls the low-frequency range beyond some characteristic frequency Time, cone shaped elastic damping hole pipe 16 and slot apertures 15 are all in Fig. 7 (c) state.Such structure changes Wave filter design both ensure that the full frequency band full working scope filtering of hydraulic system, reduces again under nominal situation The pressure loss of wave filter, it is ensured that the hydraulic pressure rigidity of system.

This wave filter 8 can also the pulsation decay of solid line operating mode self-adaptive pressure.When hydraulic system working conditions change Time, both executive component stopped suddenly or ran, and when the opening of valve changes, can cause pipe-line system Characteristic impedance undergo mutation, so that former pipeline pressure is in time with the curve of change in location the most therewith Change, then the position of pressure peak also changes.Owing to the axial length of the wave filter of the present invention sets It is calculated as more than system main pressure pulsation wavelength, and the plug-in type spiral isomery cascaded H type filter of wave filter The cavity volume length of ripple device, the length of S type cavity volume wave filter and the length of elastic thin-wall and wave filter axis Length is equal, it is ensured that pressure peak position is constantly in the effective range of wave filter；Insert The taper structure changes damping hole of formula spiral isomery cascaded H mode filter is opened on S type elastic thin-wall, edge Axis direction is uniformly distributed, and corrugated tube and the taper insertion pipe resonated between cavity volume that spiral isomery is wound around exist Axially it is uniformly distributed so that the performance of wave filter is had little to no effect by pressure peak change in location, from And achieve operating mode adaptive-filtering function.In view of three kinds of filter structure axial dimensions and wave filter phase When, this bigger size also ensure that hydraulic filter possesses stronger pressure fluctuation damping capacity.

This wave filter 8 is used to carry out the method for hydraulic pulsation filtering 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 spiral isomery cascaded H mode filter, taper structure changes damping hole, taper Insert pipe and fluid produces resonance, consume pulsation energy, complete the filtering of low frequency pulsation；

4), the axial length of wave filter is designed as more than hydraulic system main pressure pulsation wavelength, and Plug-in type connection in series-parallel H mode filter length, Double-pipe plug-in type filter length and S type elastic thin-wall 87 length are equal with filter length, make 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；

5), by stretching of the cone shaped elastic damping hole pipe of taper structure changes damping hole and opening of slot apertures Close, complete pressure fluctuation adaptive-filtering.

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

Described electrification module 32 makes the metallic particles material in fluid charged, and it is by some electrodes 321 And one electrode controller 322 form.Described some electrodes 321 are installed in U-tube 31, its It is respectively connecting to electrode controller 252.Described electrode controller 322 is electrically connected with to be executed to electrode 321 Making alive, makes the particulate matter in fluid charged.

Described separation module 33 make particle charge that quality is bigger poly-be incorporated under centrifugal action get rid of to Cavity wall, it can use uniform magnetic field separation module, rotating excitation field separation module or helical pipe magnetic field to divide From module.

When described separation module 33 uses uniform magnetic field separation module, it is by 331, two, aluminum matter pipeline Magnetic pole 332 and magnetic pole controller 333 form.Wherein, said two magnetic pole 332 is separately positioned on On aluminum matter pipeline 331, the opposite polarity of these two magnetic poles 332, and in being oppositely arranged.Said two Magnetic pole 332 is respectively and electrically connected on magnetic pole controller 333.

The design principle of described uniform magnetic field separation module 33 is as follows: charged particle flows into speed V Uniform magnetic field separation module 33, two magnetic poles 332 of uniform magnetic field separation module 33 produce and speed The uniform magnetic field that V direction is vertical, according to left hand rule, then charged particle is at uniform magnetic field separation module By being perpendicular to acting on of the Loulun magnetism of velocity attitude and magnetic direction in 33, this power does not change charged The speed of granule, it only changes the direction of motion of charged particle, makes charged particle under this force To the vessel wall motion of aluminum matter pipeline 331, so that the granule in fluid " separates " out from fluid, Assemble to tube wall, it is simple to subsequent adsorbtion captures.Owing to fluid has certain viscosity, granule is to tube wall Motor process is also acted on by viscous drag.In order to ensure separating effect, need to regulate magnetic field strong Degree B makes the granule of distance tube wall farthest to move at tube wall within the action time of separation module, Quantitative analysis is as follows:

Assuming that particle mass is m, speed is v, and magnetic field intensity is B, and carried charge is q, separation module A diameter of D, a length of L, then:

Acting on the Loulun magnetism on charged particle is

F_l=qvB

The viscous drag that charged particle is subject to is

F_d=6 π η r v

Charged of the radius v of η hydraulic pressure oil viscosity r charged particle Grain movement velocity

It not general, it is assumed that the granule in fluid has reached stable state when entering separation module, the most charged Granule can be approximated by the time of separation module and represent with following formula

$t_1=\frac{L}{v}$

The charged particle of distance tube wall farthest moves to the time t at tube wall₂Can be solved by following formula

$D=\frac{mg}{qB-6\mathrm{\π}\mathrm{\η}r}t-{\left(\frac{mg}{qB-6\mathrm{\π}\mathrm{\η}r}\right)}^2(1-e^{-\frac{qB-6\mathrm{\π}\mathrm{\η}r}{m}t})$

Regulation B so that t₁>t₂, i.e. can reach separating effect.

When described separation module 33 uses rotating excitation field separation module, it is by aluminum matter pipeline 331, irony The parts compositions such as shell 334, three-phase symmetric winding 335 and three-phase symmetrical current module 336.Institute State three-phase symmetric winding 335 to be wound on outside aluminum matter pipeline 331.Described iron shell 334 is coated on aluminum matter On pipeline 335.Described three-phase symmetrical current module 336 connects described three-phase symmetric winding 335.

The design principle of described rotating excitation field separation module 33 is as follows: charged particle flows into speed V Rotating excitation field separation module 33, three-phase symmetrical current module 336 makes to flow through in three-phase symmetric winding 335 Three-phase symmetrical electric current, this electric current produces rotating excitation field in aluminum matter pipeline 331, and charged particle is rotating By being perpendicular to acting on of the Loulun magnetism of velocity attitude and magnetic direction under the action of a magnetic field, this power does not changes Becoming the speed of charged particle, it only changes the direction of motion of charged particle, makes charged particle in this power Spirally advance under effect, and to vessel wall motion.Reasonable adjusting magnetic field intensity can make in fluid Granule " separates " out from fluid, is gathered in near-wall, it is simple to subsequent adsorbtion captures.Due to Fluid has certain viscosity, and granule is also acted on by viscous drag during vessel wall motion.For Guarantee separating effect, need to make the microgranule on aluminum matter pipeline 331 axis can be in the effect of separation module Moving in time at tube wall, quantitative analysis is as follows:

Assuming that particle mass is m, speed is v, and magnetic field intensity is B, and carried charge is q, separation module A diameter of D, a length of L, then:

Acting on the Loulun magnetism on charged particle is

F_l=qvB

The viscous drag that charged particle is subject to is

F_d=6 π η r v

Charged of the radius v of η hydraulic pressure oil viscosity r charged particle Grain movement velocity

Assuming that the granule in fluid has reached stable state when entering separation module, then charged particle is by separating The time of module can approximate and represent with following formula

$t_1=\frac{L}{v}$

Charged particle on conduit axis moves to the time t at tube wall₂Can be solved by following formula

$\frac{D}{2}=\frac{mg}{qB-6\mathrm{\π}\mathrm{\η}r}t-{\left(\frac{mg}{qB-6\mathrm{\π}\mathrm{\η}r}\right)}^2(1-e^{-\frac{qB-6\mathrm{\π}\mathrm{\η}r}{m}t})$

Regulation B so that t₁>t₂, i.e. can reach separating effect.

When described separation module 33 uses helical pipe magnetic field separation module, it is by aluminum matter helical pipe 338, solenoid 339 and solenoid control circuit 336 form.Wherein, described aluminum matter serpentine pipe Road 338 is arranged in solenoid 339.Described solenoid 339 and solenoid control circuit 336 are electrical Connect.Described solenoid control circuit 336 is electrically connected to ECU3.

The design principle of described helical pipe magnetic field separation module 33 is as follows: carry the oil of charged particle Liquid advances along aluminum matter helical pipe 338, thus produces at pipeline exit and have certain spin direction Eddy flow, the charged particle of heavier mass rotates along with fluid, produces under the influence of centrifugal force to tube wall Radial motion；Simultaneously as the Way in of aluminum matter helical pipe 338 and energization solenoid 339 Axial magnetic field direction vertical, enter the charged particle of aluminum matter helical pipe 338 by Lip river with speed v The effect of logical sequence magnetic force, direction is perpendicular to magnetic direction and the Way in of aluminum matter helical pipe 338.Lip river Logical sequence magnetic force makes charged particle spin in pipeline forward travel, due to entering of aluminum matter helical pipe 338 Mouthful direction and magnetic direction are close to vertical, and charged particle mainly rotates in a circumferential direction motion, and fluid is the most not Impacted, thus realize granule " separation " from fluid, in order to realize the absorption to granule.For Ensure " separation " effect, need to make the microgranule on aluminum matter conduit axis can be when the effect of separation module In move at tube wall, quantitative analysis is as follows:

Assuming that particle mass is m, speed is v, and carried charge is q, a diameter of D of aluminum matter helical pipe, The number of turn of aluminum matter helical pipe is n, the Way in of aluminum matter helical pipe and energization solenoid axial The angle of magnetic direction is θ, and the solenoid number of turn is N, and electric current is I, and magnetic field intensity is B, Vacuum Magnetic Conductance is μ₀, then:

Acting on the Loulun magnetism on charged particle is

F_l=qvB

The viscous drag that charged particle is subject to is

F_d=6 π η r v

Charged of the radius v of η hydraulic pressure oil viscosity r charged particle Grain movement velocity

Charged particle can be approximated by the time of separation module and represent with following formula

$t_1=\frac{qBnD}{2\mathrm{\π}mvcos\mathrm{\θ}}$

Charged particle on conduit axis moves to the time t at tube wall₂Can be solved by following formula

$\frac{D}{2}=vsin\mathrm{\θ}\frac{m}{qB+6\mathrm{\π}\mathrm{\η}r}(1-e^{-\frac{qB+6\mathrm{\π}\mathrm{\η}r}{m}t})$

Magnetic field intensity within solenoid can be approximately constant

$I=\frac{B}{\mathrm{\μ}N}$

Regulation I so that t₁>t₂, i.e. can reach separating effect.

Described first adsorption module 34 is the most micro-for adsorbing the magnetic polymeric after separated module 33 separates , 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.

Use above-mentioned filter plant that backflow is pressed with the processing step of process 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 electrification module 32 of U-shaped separation of particles module 3, makes in fluid Particulate matter is charged, delivers to separation module 33 afterwards；

3), the charged corpuscle in fluid is made to gather to tube wall under the effect of external force by segregation apparatus 33 Closing, the first adsorbent equipment 34 is delivered in oil return 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 full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, it is characterized in that: it uses a kind of filter plant, and filter plant 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, corrugated tube and S type elastic thin-wall；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；The resonance cavity volume of cylinder is formed between described S type elastic thin-wall and shell；Some taper structure changes damping holes, taper structure changes damping hole connection resonance cavity volume is uniformly had in the axial direction of described S type elastic thin-wall；Described taper structure changes damping hole is made up of cone shaped elastic damping hole pipe and slot apertures；Described corrugated tube is wound on outside resonance cavity volume in the shape of a spiral, inserts pipe with resonance cavity volume by multiple tapers and connects；Described corrugated tube is connected by some arms between respectively enclosing, and arm is provided with switch；Described corrugated tube and resonance cavity volume composition plug-in type spiral isomery cascaded H mode filter；Described U-shaped separation of particles module includes a U-tube, U-tube is sequentially installed with electrification module, separation 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 electrification module of U-shaped separation of particles module, makes the particulate matter in fluid charged, delivers to separation module afterwards；

3), making the charged corpuscle in fluid be polymerized to tube wall under the effect of external force by segregation apparatus, the first adsorbent equipment is delivered in oil return 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 full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, it is characterised in that: the axis of described input pipe and outlet tube is the most on the same axis；The wider place of described taper structure changes damping hole opening is positioned at resonance cavity volume, and its taper angle is 10 °；The Young's modulus of described taper structure changes damping hole cone shaped elastic damping hole pipe is 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 is bigger than the Young's modulus of cone shaped elastic damping hole pipe, can be with fluid opened by pressure or closedown；Described taper is inserted the wider place of tube opening and is positioned at corrugated tube, and its taper angle is 10 °.

3. as claimed in claim 1 with full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, it is characterised in that: described electrification module includes some electrodes and an electrode controller；Described some electrodes are installed in U-tube, and it is respectively connecting to electrode controller.

4. as claimed in claim 1 with full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, it is characterized in that: described separation module uses uniform magnetic field separation module, and this uniform magnetic field separation module includes aluminum matter pipeline, two magnetic poles and magnetic pole controller；Wherein, said two magnetic pole is separately positioned on aluminum matter pipeline, the opposite polarity of these two magnetic poles, and in being oppositely arranged；Said two magnetic pole is respectively and electrically connected on magnetic pole controller.

5. as claimed in claim 1 with full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, it is characterized in that: described separation module uses rotating excitation field separation module, and this rotating excitation field separation module includes aluminum matter pipeline, iron shell, three-phase symmetric winding 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 three-phase symmetrical current module connects described three-phase symmetric winding.

6. as claimed in claim 1 with full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, it is characterized in that: described separation module uses helical pipe magnetic field separation module, and this helical pipe magnetic field separation module includes aluminum matter helical pipe, solenoid and solenoid control circuit；Wherein, described aluminum matter helical pipe is arranged in solenoid；Described solenoid and solenoid control circuit are electrically connected with.

7. as claimed in claim 1 with full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, it is characterized in that: described first adsorption module and second is inhaled adsorption module and used homopolarity adjacent type absorbing ring, and this homopolarity adjacent type absorbing ring includes aluminium ring shape pipeline, forward solenoid, reverse solenoid and irony magnetic conduction cap；Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, 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.

8. as claimed in claim 1 with full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, it is characterized in that: described first adsorption module and second is inhaled adsorption module and used 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 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.

9. described in claim 1 with full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, 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.

10. described in claim 1 with full frequency band structure changes operating mode adaptive-filtering, the filter method that electrifies and adsorb, 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；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 automatically controlled check-valves；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.