CN108561376A - A kind of multifunction hydraulic cleaning filter method - Google Patents
A kind of multifunction hydraulic cleaning filter method Download PDFInfo
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- CN108561376A CN108561376A CN201810178007.0A CN201810178007A CN108561376A CN 108561376 A CN108561376 A CN 108561376A CN 201810178007 A CN201810178007 A CN 201810178007A CN 108561376 A CN108561376 A CN 108561376A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
Abstract
The invention discloses a kind of multifunction hydraulics to clean filter method.Existing hydraulic oil filtering method cannot provide a variety of filtering accuracy grades, and cannot carry out data analysis to pollution hydraulic pressure oil liquid object.Through oil return detection mouth, magnetic filter and coarse filter when oil return of the present invention；Through fuel-displaced detection mouth, adjustable filtering precision circuit, fine filter and main fuel tank oil absorption filter when fuel-displaced, and there are three types of filtering accuracy is selective in adjustable filtering precision circuit；The detection device that oil return detection mouth is connected with fuel-displaced detection mouth provides on-line checking function, and when pollutant reaches the predetermined value under different filtering accuracies, warning device will alarm automatically；When requiring supplementation with fluid, the fluid in fuel reserve tank enters main fuel tank through fuel reserve tank oil absorption filter, fuel reserve tank oil pump successively.The present invention provides the free switching of three kinds of different filtration grades, and scene is adaptable.
Description
Technical field
The present invention relates to a kind of hydraulic pressure to clean filter method, specifically a kind of multifunction hydraulic for engineering machinery
Clean filter method.
Background technology
As the important component of Hydraulic Power Transmission System, the quality of hydraulic oil quality directly affects the normal of hydraulic system
Work.The failure of hydraulic system is caused by hydraulic oil there are about 70 percent.After hydraulic oil long-time use, it can not keep away
The appearance pollution problem exempted from, causes the important performances such as its viscosity, corrosion resistance, lubricity different degrees of decline occur.In order to
The normal operation of equipment is kept, only using the method for periodic replacement hydraulic oil, this mode can not only waste a large amount of manpower
Financial resources also most probably pollute hydraulic system during changing oil.To solve this problem, also there are some fluid mistakes
Filter vehicle efficiently solves the place of waste oil such as a kind of secondary filter vehicle that license Publication No. CN202786175U is related to
Reason and recycling problem, realize high-accuracy filtering.
But existing hydraulic oil filtering vehicle is provided solely for the function of filtering, cannot be cleaned to hydraulic system inside.Together
When filtering accuracy be not that the higher the better, requirement of the distinct device for the cleannes of fluid is different, an airplane braking system pair
It is significantly larger than the hydraulic system of an excavator in the requirement of hydraulic oil liquid cleannes, the prior art does not occur also providing a variety of mistakes
The method for filtering accuracy class.Inevitably there is leakage problem in the process of running in hydraulic system, and filtering itself also can
The loss of fluid is caused, conventional hydraulic oil filter method, there is no solve the problems, such as supplement fluid.When a hydraulic system needs
When being filtered cleaning to hydraulic oil, it is usually associated with the maintaining to entire hydraulic system and malfunction elimination, existing oil strain
Method cannot carry out data analysis to pollution hydraulic pressure oil liquid object, only experience be leaned on to differentiate, fluid taking-up is then sent for analyzing, in this way
It is very poor to do instantaneity.Filter device worked after a period of time, and the experience for often relying on worker is replaced or cleaned, this is filtering
Cleaning process increases many uncertainties.
Invention content
Purpose of the present invention is to solve prior art defect, providing one kind can on-line checking, high pressure washing, adjustable filtering essence
The multifunction hydraulic of degree cleans filter method, it also has, and oil pipe is easy for installation, filter capacity is strong, the rate of filtration is fast, replaces filter
The advantages that core facilitates.
The present invention realizes that the technical solution of above-mentioned purpose is：
The hydraulic pressure cleaning and filtrating equipment that the present invention uses, including it is back leakage connection, oil return detection mouth, magnetic filter, fuel-displaced
Connector, fuel-displaced detection mouth, adjustable filtering precision circuit, fine filter, fuel-displaced filter oil pump, repairing connector, fuel reserve tank oil pump and
Detection device；The detection device include detection case, flusher, laser particle detector, humidity sensor, processor and
Display；Laser particle detector detects the particulate matter quantity in fluid, and humidity sensor detects the relative humidity of fluid；It is described
Oil return detection mouth and fuel-displaced detection mouth by one sampling shut-off valve, a pressure reducing valve, a flowmeter, a throttle valve and
One pressure gauge composition, pressure gauge is successively through throttle valve, flowmeter, sampling shut-off valve and pressure reducing valve connecting detection case；All pressures
The detection data of power table and flowmeter is exported to processor；The adjustable filtering precision circuit is by special fine filter one, spy
Fine filter two, two-bit triplet reversal valve one, two-bit triplet reversal valve two, shut-off valve two, check valve one and check valve two form；
The entrance of two-bit triplet reversal valve one connects the outlet of fine filter, and two outlets of two-bit triplet reversal valve one connect two three respectively
The entrance of the entrance and check valve two of logical reversal valve two；Two outlets of two-bit triplet reversal valve two connect special fine filter two respectively
One end and check valve one outlet, and special fine filter two connect that end of the outlet of two-bit triplet reversal valve two through shut-off valve two with
One end of special fine filter one and the entrance connection of check valve one；Another termination spy fine filter two of special fine filter one it is another
The outlet of one end and check valve two；Fuel reserve tank connects master through fuel reserve tank oil absorption filter, fuel reserve tank oil pump with repairing connector successively
Fuel tank.
The multifunction hydraulic cleans filter method, specific as follows：
(1) oil return filter cleaning process
The oil return opening of back leakage connection is connected with the hydraulic system of required filtering, fluid through oil return shut-off valve and returns successively
Flowmeter, throttle valve, the pressure gauge of oily detection mouth, magnetic filter, coarse filter and radiator enter main fuel tank.Pass through oil return
The throttle valve of detection mouth realizes the flow-rate adjustment of reflux course, and is observed by the flowmeter of oil return detection mouth.
(2) fuel-displaced filtering cleaning process
The oil outlet of delivery connection is connected with the hydraulic system of required filtering.Fluid is through main fuel tank oil absorption filter to going out
Oily filter oil pump, then in turn through fine filter, the pressure gauge in adjustable filtering precision circuit and fuel-displaced detection mouth, throttle valve
And flowmeter, go out oil cut-off valve and reaches the required hydraulic system filtered；Flow is adjusted by the throttle valve of fuel-displaced detection mouth
Section, and observed by the flowmeter of fuel-displaced detection mouth.
Wherein, shut-off valve one is set between the outlet and the entrance for going out oil cut-off valve of oil return shut-off valve；Oil return filter cleans
In process and fuel-displaced filtering cleaning process, shut-off valve one is in off state；Shut-off valve one is opened, oil return shut-off valve and fuel-displaced section
When only valve is closed, for realizing the circulating filtration of internal oil.
(3) adjustable filtering precision circuit is filtered the process of accuracy selection
(1) fluid is without two special fine filters：The spool of two-bit triplet reversal valve one is placed in connection two-bit triplet commutation
The position of valve two, and the spool of two-bit triplet reversal valve two is placed in the position for being connected to check valve one, fluid is first through two-bit triplet
Reversal valve one, then through two-bit triplet reversal valve two, and since the effect of check valve one can only flow to oil outlet；
(2) two special fine filter series connection：The spool of two-bit triplet reversal valve one is placed in connection two-bit triplet reversal valve two
Position, and by the spool of two-bit triplet reversal valve two be placed in connection shut-off valve two position, be closed at shut-off valve two, fluid
First through two-bit triplet reversal valve one, then through two-bit triplet reversal valve two, since shut-off valve two is closed, special essence filtering can only be flowed to
Then device two passes through special fine filter one, oil outlet is flowed to by check valve one；
(3) two special fine filters are in parallel：The spool of two-bit triplet reversal valve one is placed in the position of connection check valve two, together
When open shut-off valve two, then fluid flows to special fine filter one and special fine filter simultaneously first through two-bit triplet reversal valve one
Two, flow to oil outlet by check valve one.
(4) detection process
Detection device is first rinsed using preceding：Petroleum ether is passed through to detection case and laser particle detector using flusher
It is cleaned with the gauge head of humidity sensor.Then it opens laser particle detector and selects the Working mould under a kind of filtering accuracy
Formula.
When without detection, the sampling shut-off valve of oil return detection mouth and fuel-displaced detection mouth is turned off；Detect oil return filter essence
When spending, the sampling shut-off valve of oil return detection mouth is opened, pressure reducing valve of the fluid through oil return detection mouth enters detection case, oil return after sampling
The sampling shut-off valve of detection mouth is closed；When detecting fuel-displaced filtering accuracy, the sampling shut-off valve of fuel-displaced detection mouth is opened, fluid is through going out
The pressure reducing valve of oily detection mouth enters detection case, and the sampling shut-off valve of fuel-displaced detection mouth is closed after sampling.Processor passes through laser grain
The data that sub- detector and humidity sensor transmit analyze fluid, when the relative humidity of particulate matter quantity or fluid reaches
When predetermined value under different filtering accuracies, the warning device alarm being connect with processor, testing result is shown over the display.
The laser particle detector carries out automatically after completing flushing, detection, a cycle of interval stand-by period
The detection in next period is spaced stand-by period value in 0~60min.
(5) oil replenishing process
When requiring supplementation with fluid, the fluid in fuel reserve tank enters through fuel reserve tank oil absorption filter, fuel reserve tank oil pump successively
Main fuel tank.
The pressure that fuel reserve tank overflow valve limits fuel feeding is set at the fuel reserve tank fuel pump outlet.
The processor provides interface and is connected with computer, stores data into computer and is compared with database,
The hydraulic system present situation filtered needed for analyzing, to predict source of leaks, and helps staff to debug.
The beneficial effects of the present invention are：
1, by designing multilevel circulation filtering device so that highest filtering accuracy reaches 5 grades of NAS, and grade filter capacity is strong.
It is designed with mobility, while by the circuit of adjustable filtering precision, realizes the free switching of three kinds of different filtration grades, it is existing
Field is adaptable, and it is short to reach the defined oil cleanliness standard time.It, can when the filtering accuracy of hydraulic oil liquid is of less demanding
To allow fluid not by special fine filter, the efficiency of work can be not only improved, the working life of special fine filter also can be improved,
Hydraulic oil not less than 7 grades of NAS is provided at this time；When hydraulic oil liquid is more demanding to filtering accuracy, can allow its by two simultaneously
The special fine filter of connection, two filters work at the same time the speed that can improve fuel feeding, even if a special fine filter occurs to block up
Another still can work when plug, provide the hydraulic oil not less than 6 grades of NAS at this time；When fluid requires very filtering accuracy
Gao Shi allows it by concatenated special fine filter, provides the hydraulic oil not less than 5 grades of NAS at this time.
2, on-line checking function is provided, can accurately show the front and back fluid cleaning requirements of cleaning, when pollutant reaches different
When predetermined value under filtering accuracy, warning device will alarm automatically, and digital assay is realized by being connected with computer,
Conducive to maintaining and fault diagnosis.It is equipped with pressure sensor on the filter, once filter both sides pressure difference is more than safety value,
It gives a warning immediately, prompts to replace filter.Fuel reserve tank can in time supplement the hydraulic oil of hydraulic system loss, while double
The design of pump not only increases working efficiency, when one pump when something goes wrong, be also used as back-up power source, improve use
Safety coefficient.
Description of the drawings
Fig. 1 is the hydraulic system principle figure of multifunction hydraulic of the present invention cleaning filtering vehicle.
In figure：1, fuel reserve tank；2, fuel reserve tank overflow valve；3, fuel reserve tank oil absorption filter；4, fuel reserve tank Oil pump electrical machinery group；5、
Thermometer；6, air cleaner；7, liquid level gauge；8, radiator；9, return pressure table two；10, coarse filter；11, Magnetic filtration device
Device；12, oil return detection mouth；13, oil return shut-off valve；14, shut-off valve one；15, go out oil cut-off valve；16, fuel-displaced detection mouth；17, it examines
Survey device；18, fine filter；19, fuel-displaced pressure gauge one；20, fuel-displaced filter oil pump motor group；21, pilot operated compound relief valve；22、
Safety valve；23, main fuel tank oil absorption filter；24, main fuel tank；25, fuel-displaced sampling shut-off valve；26, pressure reducing valve one；27, go out oil stream
Gauge；28, fuel-displaced throttle valve；29, fuel-displaced pressure gauge two；30, oil return samples shut-off valve；31, pressure reducing valve two；32, return flow
Meter；33, return pressure table one；34, meter out valve；35, check valve one；36, shut-off valve two；37, special fine filter one；38、
Special fine filter two；39, two-bit triplet reversal valve two；40, check valve two；41, two-bit triplet reversal valve one；42, adjustable filtering
Precision circuit.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of multifunction hydraulic cleans filter method, it is specific as follows：
(1) oil return filter cleaning process
The oil return opening of back leakage connection is connected with the hydraulic system of required filtering, fluid through oil return shut-off valve 13, then according to
It is secondary through return flow meter 32, meter out valve 34, return pressure table 1, magnetic filter 11, coarse filter 10, return pressure
Table 29, radiator 8 enter main fuel tank 24.The flow-rate adjustment of reflux course is realized by adjusting meter out valve 34, and by returning
Oil flowmeter 32 is observed.The outlet of oil return shut-off valve 13 samples shut-off valve 30 through oil return and 2 31 connecting detection of pressure reducing valve fills
It sets.Oil return samples shut-off valve 30, pressure reducing valve 2 31, return flow meter 32, meter out valve 34 and return pressure table 1 and forms
Oil return detection mouth 12.
(2) fuel-displaced filtering cleaning process
The oil outlet of delivery connection is connected with the hydraulic system of required filtering.Start fuel-displaced filter oil pump motor group 20,
Fluid through main fuel tank oil absorption filter 23 to fuel-displaced filter oil pump, then in turn through fuel-displaced pressure gauge 1, fine filter 18,
Adjustable filtering precision circuit 42 (fine filter 18 to the oil circuit between fuel-displaced pressure gauge 29), fuel-displaced pressure gauge 2 29, fuel-displaced section
Stream valve 28 goes out oil flowmeter 27, goes out the hydraulic system that oil cut-off valve 15 reaches required filtering；Go out the outlet of oil flowmeter 27 through going out
Oil sampling shut-off valve 25 and one 26 connecting detection device of pressure reducing valve.Fuel-displaced filter oil pump exit is limited equipped with pilot operated compound relief valve 21
Determine the pressure of fuel feeding, the outlet of pilot operated compound relief valve 21 connects main fuel tank；Fuel-displaced pressure gauge 2 29 is for verifying pilot operated compound relief valve 21
The charge oil pressure of restriction；Flow is adjusted by fuel-displaced throttle valve 28, and is observed by going out oil flowmeter 27.When need
When wanting flushing of hydraulic system, fuel-displaced filter oil pump outlet pressure and flow are just properly increased, fluid passes through when charge oil pressure is excessively high
Safety valve 22 flows back to main fuel tank, ensures the safety of work.Fuel-displaced sampling shut-off valve 25, goes out oil flowmeter 27, goes out pressure reducing valve 1
Oily throttle valve 28 and fuel-displaced pressure gauge 29 form fuel-displaced detection mouth 16.
Shut-off valve 1 is set between the outlet of oil return shut-off valve 13 and the entrance for going out oil cut-off valve 15；Oil return filter cleans
In process and fuel-displaced filtering cleaning process, shut-off valve 1 is in off state；Shut-off valve 1 is opened, 13 He of oil return shut-off valve
When going out the closing of oil cut-off valve 15, the circulating filtration of filtering vehicle internal oil may be implemented.
(3) adjustable filtering precision circuit is filtered the process of accuracy selection
(1) two-bit triplet reversal valve 1 and two-bit triplet reversal valve 2 39 are placed in right position simultaneously, you can realize fluid
Without special fine filter：Fluid is first through two-bit triplet reversal valve 1, then through two-bit triplet reversal valve 2 39, due to check valve
One 35 effect can only flow to oil outlet；
(2) two special fine filter series connection：Two-bit triplet reversal valve 1 is placed in right position, by two-bit triplet reversal valve 2 39
It is placed in left position, is closed at shut-off valve 2 36, fluid is first through two-bit triplet reversal valve 1, then through two-bit triplet reversal valve two
39, since shut-off valve 2 36 closes the collective effect with check valve 2 40, special fine filter 2 38 can only be flowed to, then passes through spy
Fine filter 1 flows to oil outlet by check valve 1；
(3) two special fine filters are in parallel：Two-bit triplet reversal valve 1 is placed in left position, opens simultaneously shut-off valve 2 36,
Then fluid flows to special fine filter 1 and special fine filter 2 38, by list simultaneously first through two-bit triplet reversal valve 1
Oil outlet is flowed to valve 1.
(4) detection process
Detection device 17 include detection case, flusher, laser particle detector, humidity sensor, processor, keyboard and
Display.It should first be rinsed before use：Petroleum ether is passed through to detection case and laser particle detector and humidity using flusher
The gauge head of sensor is cleaned, and keeps rinsing at least 1 minute or at least through the petroleum ether of 200ml to exclude last survey
Remaining any air or liquid are tried so that it is guaranteed that sample room does not have cross contamination.Laser particle detector is opened to select by keyboard
The operating mode under a kind of filtering accuracy is selected, avoids early warning that mistake occurs.
When without detection, oil return sampling shut-off valve 30 and fuel-displaced sampling shut-off valve 25 are turned off；Detect oil return filter essence
When spending, first opens oil return and sample shut-off valve 30, fluid enters detection case through pressure reducing valve 2 31, and the effect of pressure reducing valve 2 31 is to avoid
High pressure oil causes damages to detection device, and oil return sampling shut-off valve 30 is closed after sampling；Similarly, when detecting fuel-displaced filtering accuracy,
Fuel-displaced sampling shut-off valve 25 is first opened, fluid enters detection case through pressure reducing valve 1, and fuel-displaced sampling shut-off valve 25 is closed after sampling.
Laser particle detector detects the particulate matter quantity in fluid, and humidity sensor detects the relative humidity (water in fluid of fluid
Percent by volume), data are transmitted to processor by laser particle detector and humidity sensor, and processor divides fluid
Analysis, when the relative humidity of particulate matter quantity or fluid reaches the predetermined value under different filtering accuracies, the report that is connect with processor
Alarm device is alarmed automatically.Testing result real-time display over the display, display result provide ISO, NAS, AS4059E-2 and
AS4059E-1 multiple standards, English, Italian, French, German and Chinese multilingual, to adapt to different industries and difference
The needs in area.Processor provides interface and is connected with computer, stores data into computer, so as to by the data obtained and
Database compares, and analyzes the required hydraulic system present situation filtered, predicts source of leaks, helps staff's debugging.
Detection device is arranged, and there is the automatic discontinuous property detection function of progress, i.e. laser particle detector to complete flushing, inspection
Automatically the detection in next period is carried out after survey, a cycle of interval stand-by period, it is of course possible to which the setting interval stand-by period is 0
~60min is differed.
Laser particle detector can be closed when not detecting, and detection case and laser particle detector and humidity are passed before closing
The gauge head of sensor is cleaned, and ensures accuracy of detection.
(5) oil replenishing process
When requiring supplementation with fluid, start fuel reserve tank Oil pump electrical machinery group 4, the fluid in fuel reserve tank 1 is inhaled through fuel reserve tank successively
Oil strainer 3, fuel reserve tank oil pump enter main fuel tank 24, observe the liquid level gauge 7 at main fuel tank, and fuel reserve tank oil is closed when oil mass is suitable
4 fuel cut-off of pump motor group.Thermometer 5 and air cleaner 6 are additionally provided at main fuel tank.Oil storage is set at fuel reserve tank fuel pump outlet
Case overflow valve 2 limits the pressure of fuel feeding, and the outlet of fuel reserve tank overflow valve 2 connects fuel reserve tank 1.
The filtering accuracy of main fuel tank oil absorption filter and fuel reserve tank oil absorption filter is 80 μm；The filtering of magnetic filter
Precision is 60 μm, and main filtration falls the iron filings in fluid, and follow up device is protected not to be damaged；The filtering accuracy of coarse filter is 20
μm, main filtration falls the moisture and particulate matter of fluid；The filtering accuracy of fine filter is 10 μm；The filtering of two special fine filters
Precision is 3 μm, for ensuring to reach design requirement；The special fine filter of magnetic filter, coarse filter, fine filter and two is all
Equipped with pressure sensor and prior-warning device.Fine filter and two special fine filters are high pressure filter, for bearing high pressure
The impact of oil.
Claims (3)
1. a kind of multifunction hydraulic cleans filter method, it is characterised in that：The hydraulic pressure cleaning and filtrating equipment of use, including oil return connect
Head, oil return detection mouth, magnetic filter, delivery connection, fuel-displaced detection mouth, adjustable filtering precision circuit, fine filter, fuel-displaced mistake
Oil strain pump, repairing connector, fuel reserve tank oil pump and detection device；The detection device includes detection case, flusher, laser grain
Sub- detector, humidity sensor, processor and display；Laser particle detector detects the particulate matter quantity in fluid, humidity
Sensor detects the relative humidity of fluid；The oil return detection mouth and fuel-displaced detection mouth by a sampling shut-off valve, one
Pressure reducing valve, a flowmeter, a throttle valve and a pressure gauge composition, pressure gauge are cut through throttle valve, flowmeter, sampling successively
Only valve and pressure reducing valve connecting detection case；The detection data of all pressure gauges and flowmeter is exported to processor；Described is adjustable
Filtering accuracy circuit by special fine filter one, special fine filter two, two-bit triplet reversal valve one, two-bit triplet reversal valve two, cut
Only valve two, check valve one and check valve two form；The entrance of two-bit triplet reversal valve one connects the outlet of fine filter, two-bit triplet
Two of reversal valve one export the entrance of the entrance and check valve two that connect two-bit triplet reversal valve two respectively；Two-bit triplet reversal valve
Two of two export the outlet of one end and check valve one for connecing special fine filter two respectively, and special fine filter two connects two-bit triplet
That end that reversal valve two exports is connect through shut-off valve two with the entrance of one end of special fine filter one and check valve one；Special essence filtering
The outlet of the other end and check valve two of another termination spy fine filter two of device one；Fuel reserve tank is filtered through fuel reserve tank oil suction successively
Device, fuel reserve tank oil pump connect main fuel tank with repairing connector；
This method is specific as follows：
(1) oil return filter cleaning process
The oil return opening of back leakage connection is connected with the hydraulic system of required filtering, fluid is examined through oil return shut-off valve and oil return successively
Flowmeter, throttle valve, the pressure gauge of mouth are surveyed, magnetic filter, coarse filter and radiator enter main fuel tank；It is detected by oil return
The throttle valve of mouth realizes the flow-rate adjustment of reflux course, and is observed by the flowmeter of oil return detection mouth；
(2) fuel-displaced filtering cleaning process
The oil outlet of delivery connection is connected with the hydraulic system of required filtering；Fluid is through main fuel tank oil absorption filter to fuel-displaced mistake
Oil strain pumps, then in turn through fine filter, the pressure gauge in adjustable filtering precision circuit and fuel-displaced detection mouth, throttle valve and stream
Gauge goes out oil cut-off valve and reaches the required hydraulic system filtered；Flow is adjusted by the throttle valve of fuel-displaced detection mouth, and
It is observed by the flowmeter of fuel-displaced detection mouth；
Wherein, shut-off valve one is set between the outlet and the entrance for going out oil cut-off valve of oil return shut-off valve；Oil return filter cleaning process
In fuel-displaced filtering cleaning process, shut-off valve one is in off state；Shut-off valve one is opened, and oil return shut-off valve and goes out oil cut-off valve
When closing, for realizing the circulating filtration of internal oil；
(3) adjustable filtering precision circuit is filtered the process of accuracy selection
(1) fluid is without two special fine filters：The spool of two-bit triplet reversal valve one is placed in connection two-bit triplet reversal valve two
Position, and the spool of two-bit triplet reversal valve two is placed in the position of connection check valve one, fluid first commutates through two-bit triplet
Valve one, then through two-bit triplet reversal valve two, and since the effect of check valve one can only flow to oil outlet；
(2) two special fine filter series connection：The spool of two-bit triplet reversal valve one is placed in the position of connection two-bit triplet reversal valve two
It sets, and the spool of two-bit triplet reversal valve two is placed in the position of connection shut-off valve two, be closed at shut-off valve two, fluid first passes through
Then two-bit triplet reversal valve one can only flow to special fine filter through two-bit triplet reversal valve two since shut-off valve two is closed
Two, then pass through special fine filter one, oil outlet is flowed to by check valve one；
(3) two special fine filters are in parallel：The spool of two-bit triplet reversal valve one is placed in the position of connection check valve two, is beaten simultaneously
Shut-off valve two is opened, then fluid flows to special fine filter one and special fine filter two simultaneously first through two-bit triplet reversal valve one, after
Oil outlet is flowed to through check valve one；
(4) detection process
Detection device is first rinsed using preceding：Petroleum ether is passed through to detection case and laser particle detector and wet using flusher
The gauge head of degree sensor is cleaned；Then it opens laser particle detector and selects the operating mode under a kind of filtering accuracy；
When without detection, the sampling shut-off valve of oil return detection mouth and fuel-displaced detection mouth is turned off；When detecting oil return filter precision,
The sampling shut-off valve of oil return detection mouth is opened, pressure reducing valve of the fluid through oil return detection mouth enters detection case, oil return detection after sampling
The sampling shut-off valve of mouth is closed；When detecting fuel-displaced filtering accuracy, the sampling shut-off valve of fuel-displaced detection mouth is opened, fluid is through fuel-displaced inspection
The pressure reducing valve for surveying mouth enters detection case, and the sampling shut-off valve of fuel-displaced detection mouth is closed after sampling；Processor is examined by laser particle
It surveys the data that instrument and humidity sensor transmit to analyze fluid, when the relative humidity of particulate matter quantity or fluid reaches different
When predetermined value under filtering accuracy, the warning device alarm being connect with processor, testing result is shown over the display；
The laser particle detector carries out next automatically after completing flushing, detection, a cycle of interval stand-by period
The detection in period is spaced stand-by period value in 0~60min；
(5) oil replenishing process
When requiring supplementation with fluid, the fluid in fuel reserve tank enters main oil through fuel reserve tank oil absorption filter, fuel reserve tank oil pump successively
Case.
2. a kind of multifunction hydraulic according to claim 1 cleans filter method, it is characterised in that：The fuel reserve tank oil
The pressure that fuel reserve tank overflow valve limits fuel feeding is set at pump discharge.
3. a kind of multifunction hydraulic according to claim 1 cleans filter method, it is characterised in that：The processor carries
It is connected with computer for interface, stores data into computer and compared with database, analyzes the required hydraulic pressure system filtered
System present situation, to predict source of leaks, and helps staff to debug.
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| CN201810178007.0A CN108561376B (en) | 2018-03-05 | 2018-03-05 | A kind of multifunction hydraulic cleaning filter method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810178007.0A CN108561376B (en) | 2018-03-05 | 2018-03-05 | A kind of multifunction hydraulic cleaning filter method |
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| CN108561376A true CN108561376A (en) | 2018-09-21 |
| CN108561376B CN108561376B (en) | 2019-11-05 |
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| CN110205655A (en) * | 2019-04-11 | 2019-09-06 | 浙江花园新能源有限公司 | A kind of fill method of electrolytic copper foil super-cell |
| CN111350709A (en) * | 2020-03-13 | 2020-06-30 | 上海外高桥造船有限公司 | Oil feeding filtering device |
| CN112572393A (en) * | 2019-09-30 | 2021-03-30 | 比亚迪股份有限公司 | Device for processing a hydraulic vehicle brake system |
| CN113063714A (en) * | 2021-03-26 | 2021-07-02 | 山东日发纺织机械有限公司 | Detection device and detection method for detecting clogging of filter device |
| CN114321062A (en) * | 2021-12-24 | 2022-04-12 | 浙江华章科技有限公司 | Oil station hydraulic station pressure prediction and maintenance system |
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| CN112572393A (en) * | 2019-09-30 | 2021-03-30 | 比亚迪股份有限公司 | Device for processing a hydraulic vehicle brake system |
| CN112572393B (en) * | 2019-09-30 | 2022-03-18 | 比亚迪股份有限公司 | Device for processing a hydraulic vehicle brake system |
| CN111350709A (en) * | 2020-03-13 | 2020-06-30 | 上海外高桥造船有限公司 | Oil feeding filtering device |
| CN113063714A (en) * | 2021-03-26 | 2021-07-02 | 山东日发纺织机械有限公司 | Detection device and detection method for detecting clogging of filter device |
| CN114321062A (en) * | 2021-12-24 | 2022-04-12 | 浙江华章科技有限公司 | Oil station hydraulic station pressure prediction and maintenance system |
| CN114321062B (en) * | 2021-12-24 | 2023-07-14 | 浙江华章科技有限公司 | Oil station hydraulic pressure station pressure prediction and maintenance system |
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