CN105909603A - Oil filter based on electrification, separation and adsorption and used for hydraulic system - Google Patents

Abstract

The invention relates to an oil filter based on electrification, separation and adsorption and used for a hydraulic system. According to the oil filter, a U-shaped particle separation module, an oil return cylinder and an outer bucket are sequentially arranged on a base plate; a hydraulic oil inlet is formed in the U-shaped particle separation module, the U-shaped particle separation module comprises a U-shaped pipe, and an electrification module, a separation module, an adsorption module and a demagnetization module are sequentially installed on the U-shaped pipe; the U-shaped particle separation module is connected with the upper portion of the oil return cylinder through an oil inlet pipe of the oil return cylinder; an inner cylinder is arranged in the outer bucket and installed on an end cover through a top plate and a plurality of bolts; a spiral passageway is contained in the inner cylinder and connected with the U-shaped particle separation module through an oil inlet pipe of the inner cylinder; the oil inlet pipe of the inner cylinder is located in the oil inlet pipe of the oil return cylinder and extends into the center of the U-shaped particle separation module; and a filter element is arranged on the inner wall of the inner cylinder. The oil filter based on electrification, separation and adsorption and used for the hydraulic system has the characteristics of being good in filtering performance, high in adaptability and integrity, long in service life and the like.

Description

A kind of use electrification, the oil filter for hydraulic system separating and adsorbing

[technical field]

The present invention relates to a kind of hydraulic oil filter, be specifically related to a kind of use electrification, the hydraulic system separating and adsorbing With oil filter, belong 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 (1) all kinds of Hydraulic Elements are to fluid Cleannes require different, the size of the solid particle in fluid is the most different, for this need in hydraulic system Diverse location install multiple dissimilar wave filter, thus bring cost and install complexity problem；(2) hydraulic system In filter mainly use cake filtration mode, during filtration filtrate be perpendicular to filter element surface flowing, trapped solid Microgranule forms filter cake progressive additive, and the rate of filtration is gradually reduced the most therewith until filtrate stops flowing out, and reduces filter element Service life.

Therefore, for solving above-mentioned technical problem, the liquid using electrification, separating and adsorb of a kind of innovation of necessary offer Pressure system oil filter, 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 electrification, the oil filter for hydraulic system that separates and adsorb.

For achieving the above object, the technical scheme that the present invention takes is: a kind of use electrification, the hydraulic pressure system separating and adsorbing System oil filter, it includes base plate, U-shaped separation of particles module, oil returning tube, inner core, helical flow path, filter element, outer barrel and end cap； Wherein, described U-shaped separation of particles module, oil returning tube, outer barrel are sequentially placed on base plate；Described U-shaped separation of particles module is provided with One hydraulic oil inlet, it includes a U-tube, U-tube is sequentially installed with electrification module, separation module, 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 In, if it is installed on end cap by a top board and bolt stem；Described helical flow path is contained in inner core, itself and U-shaped microgranule Connected by an inner core oil inlet pipe between separation module；Described inner core oil inlet pipe is positioned at oil returning tube oil inlet pipe, and extends into U-shaped The central authorities of separation of particles module, its diameter is less than oil returning tube oil inlet pipe diameter, and is coaxially disposed with oil returning tube oil inlet pipe；Described filter Core is arranged on the inwall of inner core, and its precision is 1-5 micron；The bottom of said tub is provided with a hydraulic oil oil-out.

The oil filter for hydraulic system electrifying, separate and adsorbing that uses of the present invention is further arranged to: described electrification mould Block includes some electrodes and an electrode controller；Described some electrodes are installed in U-tube, and it is respectively connecting to electrode control Device.

The oil filter for hydraulic system electrifying, separate and adsorbing that uses of the present invention is further arranged to: described splitting die Block 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；Described Two magnetic poles are respectively and electrically connected on magnetic pole controller.

The oil filter for hydraulic system electrifying, separate and adsorbing that uses of the present invention is further arranged to: described splitting die Block use rotating excitation field separation module, this rotating excitation field separation module include aluminum matter pipeline, iron shell, three-phase symmetric winding with 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 On；Described three-phase symmetrical current module connects described three-phase symmetric winding.

The oil filter for hydraulic system electrifying, separate and adsorbing that uses of the present invention is further arranged to: described splitting die Block use helical pipe magnetic field separation module, this helical pipe magnetic field separation module include 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 It is electrically connected with.

The oil filter for hydraulic system electrifying, separate and adsorbing that uses of the present invention is further arranged to: described absorption mould Block uses homopolarity adjacent type absorbing ring, and this homopolarity adjacent type absorbing ring includes aluminium ring shape pipeline, forward solenoid, reverse helical Pipe 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 cloth Be placed 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 oil filter for hydraulic system electrifying, separate and adsorbing that uses of the present invention is further arranged to: described absorption mould Block 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 pipe Road, forward solenoid, reverse solenoid, irony magnetic conduction cap, dividing plate, electric shock hammer and electric magnet；Described forward solenoid is with anti- Being respectively arranged in aluminium ring shape pipeline to solenoid, both are connected with electric current in opposite direction so that forward solenoid is with reverse Solenoid adjacent produces 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 positioned at Between forward solenoid and reverse solenoid；Described electric shock hammer and electric magnet are between dividing plate；Described electric magnet connects and energy Promote electric shock hammer, make electric shock hammer tap aluminium ring shape inner-walls of duct.

The oil filter for hydraulic system electrifying, separate and adsorbing that uses of the present invention is further arranged to: 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 oil filter for hydraulic system electrifying, separate and adsorbing that uses of the present invention is also configured to: the bottom of described inner core In rounding mesa-shaped, it is connected by an inner core oil exit pipe and oil returning tube, and inner core oil exit pipe is provided with an automatically controlled check-valves；In described Cylinder center upright be provided with a hollow cylinder, hollow cylinder be arranged over pressure difference indicator, this pressure difference indicator is installed on end Cover；Described inner core oil inlet pipe and the tangent connection of helical flow path.

Compared with prior art, there is advantages that

1. hydraulic oil realizes the separation of solid particle in U-shaped separation of particles module, makes the solid particle in fluid to pipe Wall moves, and at U-shaped separation of particles module outlet, the fluid rich in the near-wall of solid particle is entered by oil returning tube oil inlet pipe Being back to fuel tank after entering oil returning tube, the only fluid of the pipeline center containing trace small particle microgranule is then entered by inner core oil inlet pipe Inner core carries out high-precision filtration, improves the service life of filter element, reduces filtering cost and complexity；Enter inner core oil inlet pipe Fluid in the way of tangential influent stream, flow into the helical flow path of inner core, inner tube wall is filter element, then filtrate is under the influence of centrifugal force Being close to filter core flow, filtrate is parallel to the surface of filter element and quickly flows, and the hydraulic oil after filtration is then perpendicular to cartridge surface direction Flowing out to urceolus, the microgranule of cartridge surface is implemented to sweep stream effect by this cross flow filter type, it is suppressed that the increasing of filter cake thickness Add, be deposited on the pollution granule bottom inner core and regularly can be discharged to oil returning tube by automatically controlled check-valves, thus improve filter element and use Life-span.

2. by controlling the temperature of hydraulic oil and making the particulate matter charged polymeric in fluid to electrode applying voltage, and promote Make colloidal particles decompose to melt；Efficient absorption is formed by adsorption module；Rotating excitation field is utilized " to be divided by the molecule in fluid From " and gather near-wall, capture molecule with adsorbent equipment；Avoid endangering to residual particles demagnetization by degaussing gear Hydraulic Elements, so that solid 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 using the oil filter for hydraulic system electrifying, separate and adsorbing of the present invention.

Fig. 2 is the schematic diagram of the U-shaped separation of particles module in Fig. 1.

Fig. 3 is the structural representation of the electrification module in Fig. 2.

Fig. 4 be the separation module in Fig. 2 be the structural representation of uniform magnetic field separation module.

Fig. 5 be the separation module in Fig. 2 be the structural representation of rotating excitation field separation module.

Fig. 6 be the separation module in Fig. 2 be the structural representation of helical pipe magnetic field separation module.

Fig. 7 be the adsorption module in Fig. 2 be the structural representation of homopolarity adjacent type absorbing ring.

Fig. 8 be the adsorption module in Fig. 2 be the structural representation of the homopolarity adjacent type absorbing ring of charged hammer.

[detailed description of the invention]

Referring to shown in Figure of description 1 to accompanying drawing 8, the present invention is a kind of to use electrification, the hydraulic pressure system separating and adsorbing System oil filter, it is by base plate 6, U-shaped separation of particles module 3, oil returning tube 7, inner core 15, helical flow path 17, filter element 18, outer barrel 19 And several parts such as end cap 25 composition.

Wherein, described U-shaped separation of particles module 2, oil returning tube 7, outer barrel 19 are sequentially placed on base plate 6.Described U-shaped microgranule divides Being provided with one for being passed through the hydraulic oil inlet 1 of hydraulic oil from module 3, it includes a U-tube 31, and U-tube 31 is installed successively There are electrification module 32, separation module 33, adsorption module 34 and demagnetization module 35.

Described electrification module 32 makes the metallic particles material in fluid charged, and it is by some electrodes 321 and an electrode control Device 322 processed forms.Described some electrodes 321 are installed in U-tube 31, and it is respectively connecting to electrode controller 252.Described electrode Controller 322 is electrically connected with and applies voltage to electrode 321, makes the particulate matter in fluid charged.

Described separation module 33 makes poly-being incorporated under centrifugal action of particle charge that quality is bigger get rid of to cavity wall, and it can be adopted By uniform magnetic field separation module, rotating excitation field separation module or helical pipe magnetic field separation module.

When described separation module 33 uses uniform magnetic field separation module, its by 331, two magnetic poles 332 of aluminum matter pipeline and Magnetic pole controller 333 forms.Wherein, said two magnetic pole 332 is separately positioned on aluminum matter pipeline 331, these two magnetic poles 332 Opposite polarity, 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 uniform magnetic field with speed V and separates Module 33, two magnetic poles 332 of uniform magnetic field separation module 33 produce the uniform magnetic field vertical with speed V direction, according to left hand Rule, then charged particle in uniform magnetic field separation module 33 by being perpendicular to the Loulun magnetism of velocity attitude and magnetic direction Effect, this power does not change the speed of charged particle, and it only changes the direction of motion of charged particle, makes charged particle at the work of this power With the lower vessel wall motion to aluminum matter pipeline 331, so that the granule in fluid " separates " out from fluid, assemble to tube wall, It is easy to subsequent adsorbtion capture.Owing to fluid has certain viscosity, granule during vessel wall motion also by viscous drag Effect.In order to ensure separating effect, need to regulate magnetic field intensity B and make the granule of distance tube wall farthest can be at the work of separation module Moving at tube wall within the time, 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, a diameter of D of separation module, length For 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

The radius v charged particle movement velocity of η hydraulic pressure oil viscosity r charged particle

It not general, it is assumed that the granule in fluid has reached stable state when entering separation module, then charged particle is by dividing Can approximate from the time of 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, iron shell 334, three-phase The parts compositions such as symmetric winding 335 and three-phase symmetrical current module 336.Described three-phase symmetric winding 335 is wound on aluminum matter pipeline Outside 331.Described iron shell 334 is coated on aluminum matter 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 rotating excitation field with speed V and separates Module 33, three-phase symmetrical current module 336 makes to flow through in three-phase symmetric winding 335 three-phase symmetrical electric current, and this electric current is at aluminum matter pipe Producing rotating excitation field in road 331, charged particle is subject to be perpendicular to the Lip river of velocity attitude and magnetic direction under rotating excitation field effect The effect of logical sequence magnetic force, this power does not change the speed of charged particle, and it only changes the direction of motion of charged particle, makes charged particle exist Spirally advance under the effect of this power, and to vessel wall motion.Reasonable adjusting magnetic field intensity can make the granule in fluid from oil Liquid " separates " out, is gathered in near-wall, it is simple to subsequent adsorbtion captures.Owing to fluid has certain viscosity, granule to Also acted on by viscous drag during vessel wall motion.In order to ensure separating effect, need to make on aluminum matter pipeline 331 axis Microgranule can move at tube wall within the action time of separation module, and 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, a diameter of D of separation module, length For 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

The radius v charged particle movement velocity of η hydraulic pressure oil viscosity r charged particle

Assuming that the granule in fluid has reached stable state, the then charged particle time by separation module when entering separation 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 helical pipe 338 is arranged in solenoid 339.Described spiral shell Spool 339 and solenoid control circuit 336 are electrically connected with.

The design principle of described helical pipe magnetic field separation module 33 is as follows: carry the fluid of charged particle along aluminum matter spiral Pipeline 338 advances, thus produces at pipeline exit and have the eddy flow of certain spin direction, the charged particle of heavier mass along with Fluid rotates, and produces the radial motion to tube wall under the influence of centrifugal force；Simultaneously as the entrance of aluminum matter helical pipe 338 Direction is vertical with the axial magnetic field direction of energization solenoid 339, and the charged particle entering aluminum matter helical pipe 338 with speed v is subject to To the effect of Loulun magnetism, direction is perpendicular to magnetic direction and the Way in of aluminum matter helical pipe 338.Loulun magnetism makes charged Granule is spinned forward travel in pipeline, owing to the Way in of aluminum matter helical pipe 338 and magnetic direction are close to vertical, and band Electricity granule mainly rotates in a circumferential direction motion, and fluid is the most unaffected, thus realizes granule " separation " from fluid, in order to reality The now absorption to granule.For ensureing " separation " effect, need to make the microgranule on aluminum matter conduit 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 carried charge is q, a diameter of D of aluminum matter helical pipe, aluminum matter helical pipe The number of turn be n, the angle in the Way in of aluminum matter helical pipe and the axial magnetic field direction of energization solenoid is θ, solenoid circle Number is N, and electric current is I, and magnetic field intensity is B, and permeability of vacuum 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

The radius v charged particle movement velocity of η hydraulic pressure oil viscosity r charged particle

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 adsorption module 34 is for adsorbing the big microgranule of magnetic polymeric after separated module 33 separates, 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 aluminum 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 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, 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 electric magnet 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 electric magnet 347 are between dividing plate 345.Described electric magnet 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 absorbability to granule.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 size of granule.And by electric shock The setting of hammer 346, prevents granule bulk deposition at irony magnetic conduction cap 344, affects adsorption effect.Now, by electric magnet 347 Control the inwall of electric shock hammer 346 percussion pipeline 341 so that adsorbed granule 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, granule 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 granule, 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 microgranule 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 8, is provided with an automatically controlled set screw 9 bottom this overflow valve 8；Described Overflow valve 8 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 microgranule, enters inner core 15 by inner core oil inlet pipe 12 and realizes 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 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 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, 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 solid particle separation of polymeric effect in fluid, at U-shaped microgranule In the fluid in separation module 3 exit, the fluid at the center only small particle microgranule 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 8, thus realizes solid particle by particle Footpath shunting filtering.Herein, oil returning tube 7 and overflow valve 8 serve aforesaid macrofiltration, thus save filter number, fall Low system cost and complexity.The automatically controlled set screw 9 of overflow valve 8 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 solid 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 microgranule 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 element 18 surface under the influence of centrifugal force, and filtrate is parallel to the surface of filter element 18 and quickly flows, after filtration Hydraulic oil is then perpendicular to filter element 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 microgranule being gathered in filter element 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 element Service life thus increase substantially.Along with the accumulation of filtration time, it is deposited on the pollution granule 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 element 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 granule 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 element 18 blockage deteriorates, from And extend filter element 18 service life.

Use above-mentioned oil filter that backflow is pressed with the processing step of process as follows:

1), backflow force feed enters the electrification module 32 of U-shaped separation of particles module 3, makes the particulate matter in fluid charged, Deliver to separation module 33 afterwards；

2), the charged corpuscle in fluid is made to be polymerized to tube wall under the effect of external force by segregation apparatus 33, oil return afterwards Deliver to adsorbent equipment 34；

3), being adsorbed the magnetic polymeric microgranule in oil return by adsorption module 34, demagnetization module 35 is delivered in oil return afterwards；

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

5) after, the fluid of the most U-shaped separation of particles module 3 near-wall enters oil returning tube 7 by oil returning tube oil inlet pipe 22 Being back to fuel tank, the fluid of the pipeline center containing trace small particle microgranule then enters inner core 15 by inner core oil inlet pipe 12 to be carried out High-precision filtration；

6), the fluid carrying small particle microgranule 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；

7), 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. one kind uses electrification, the oil filter for hydraulic system separating and adsorbing, it is characterised in that: include that base plate, U-shaped microgranule divide From module, oil returning tube, inner core, helical flow path, filter element, outer barrel and end cap；Wherein, described U-shaped separation of particles module, oil return Cylinder, outer barrel are sequentially placed on base plate；Described U-shaped separation of particles module is provided with a hydraulic oil inlet, and it includes a U-tube, U-shaped Electrification module, separation module, adsorption module and demagnetization module it is sequentially installed with on pipe；Described U-shaped separation of particles module and oil return The top of cylinder is connected by an oil returning tube oil inlet pipe；Described inner core is placed in outer barrel, 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, between itself and U-shaped separation of particles module by an inner core oil inlet pipe even Connect；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 be coaxially disposed with oil returning tube oil inlet pipe；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.

Use electrification, the oil filter for hydraulic system separating and adsorbing the most as claimed in claim 1, 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 electricity Pole controller.

Use electrification, the oil filter for hydraulic system separating and adsorbing the most as claimed in claim 1, it is characterised 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 relatively setting Put；Said two magnetic pole is respectively and electrically connected on magnetic pole controller.

Use electrification, the oil filter for hydraulic system separating and adsorbing the most as claimed in claim 1, it is characterised 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 symmetrical 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 On matter pipeline；Described three-phase symmetrical current module connects described three-phase symmetric winding.

Use electrification, the oil filter for hydraulic system separating and adsorbing the most as claimed in claim 1, it is characterised 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, helical Pipe and solenoid control circuit；Wherein, described aluminum matter helical pipe is arranged in solenoid；Described solenoid and helical management and control Circuit processed is electrically connected with.

Use electrification, the oil filter for hydraulic system separating and adsorbing the most as claimed in claim 1, it is characterised in that: described Adsorption module uses homopolarity adjacent type absorbing ring, and this homopolarity adjacent type absorbing ring includes aluminium ring shape pipeline, forward solenoid, anti- To solenoid and irony magnetic conduction cap；Described forward solenoid and reverse solenoid are respectively arranged in aluminium ring shape pipeline, and two Person is connected with electric current in opposite direction so that forward solenoid and reverse solenoid adjacent produce like pole；Described irony is led Magnetic cap is arranged on the inwall of aluminium ring shape pipeline, and it is positioned at forward solenoid and reverse solenoid adjacent and forward spiral shell Spool and the intermediate point of reverse solenoid axis.

Use electrification, the oil filter for hydraulic system separating and adsorbing the most as claimed in claim 1, it is characterised in that: described Adsorption module 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 electric magnet；Described forward solenoid Being respectively arranged in aluminium ring shape pipeline with reverse solenoid, both are connected with electric current in opposite direction so that forward solenoid and Reverse solenoid adjacent produces 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 Between forward solenoid and reverse solenoid；Described electric shock hammer and electric magnet are between dividing plate；Described electric magnet connects And electric shock hammer can be promoted, make electric shock hammer tap aluminium ring shape inner-walls of duct.

8. the oil filter for hydraulic system using electrification, separating and adsorb described in claim 1, it is characterised in that: described time The bottom of oil cylinder 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 extraction Mouthful, this oil drain out is connected to a fuel tank by pipeline.

9. the oil filter for hydraulic system using electrification, separating and adsorb described in claim 1, it is characterised in that: in described The bottom of cylinder 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 non-return Valve.

10. the oil filter for hydraulic system using electrification, separating and adsorb described in claim 1, it is characterised in that: in described Cylinder center upright be provided with a hollow cylinder, hollow cylinder be arranged over pressure difference indicator, this pressure difference indicator is installed on end Cover；Described inner core oil inlet pipe and the tangent connection of helical flow path.