CN106769361A - The device and method that particle is separate in a kind of lubricating oil based on microflow control technique - Google Patents
The device and method that particle is separate in a kind of lubricating oil based on microflow control technique Download PDFInfo
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- CN106769361A CN106769361A CN201710028821.XA CN201710028821A CN106769361A CN 106769361 A CN106769361 A CN 106769361A CN 201710028821 A CN201710028821 A CN 201710028821A CN 106769361 A CN106769361 A CN 106769361A
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- 239000002245 particle Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 62
- 239000013528 metallic particle Substances 0.000 claims abstract description 26
- 238000000520 microinjection Methods 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000002536 laser-induced breakdown spectroscopy Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000004615 ingredient Substances 0.000 claims description 4
- 230000002776 aggregation Effects 0.000 claims description 3
- 238000004220 aggregation Methods 0.000 claims description 3
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- 238000000926 separation method Methods 0.000 abstract description 21
- 238000005516 engineering process Methods 0.000 description 13
- 238000001514 detection method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 239000002923 metal particle Substances 0.000 description 4
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- 241000196324 Embryophyta Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
- 238000004720 dielectrophoresis Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
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- 238000007885 magnetic separation Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 2
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 229920005573 silicon-containing polymer Polymers 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
- G01N21/718—Laser microanalysis, i.e. with formation of sample plasma
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
Abstract
The present invention provides a kind of device of particle separation in lubricating oil based on microflow control technique, it is characterised in that including：Micro-fluidic chip, micro-fluidic chip includes substrate and micro-fluidic chip body；Micro-fluidic chip body is provided with main channel, focus channel, hybrid channel, and a plurality of split tunnel；Micro-injection pump, has two, and one is connected with the main channel inlet opening of main channel, for pre-set velocity to be measured fluid of the injection with metallic particles；Another is connected with the focus channel inlet opening of focus channel, and the pure fluid without particle is injected to pre-set velocity；LIBS detecting systems, the tail end with each bar split tunnel is connected, and is used to determine that the metal types of each split tunnel judge whether to reach separating effect.The invention also discloses in lubricating oil particle separate method, with simple structure, simple to operation, portability etc. a little.
Description
Technical field
Technology the present invention relates to separate different types of metallic particles from lubricating oil, more particularly to it is a kind of based on miniflow
Control the device and method of particle separation in the lubricating oil of chip technology.
Background technology
Lubricating fluid is widely applied in motive power machine equipment as industrial " blood ", is actually included in lubricating fluid
A large amount of pollutants, wherein the most serious with the harm of solid pollutant.Metallic particles hardness in solid pollutant is higher, easily
The abrasion of plant equipment moving component is caused, triggers mechanical breakdown.In addition by the material to lubricant oil metal and non-metallic particle
The research of the characteristics such as material, quantity and size, can effectively evaluate the working condition of plant equipment, while it is also predicted that the machinery
The malfunction of equipment.In order to ensure the safe operation of plant equipment, maintenance cost is reduced, examined in real time for running status
Survey and detect essential link as mechanical equipment state, it is a wherein very important part that detection is carried out to lubricating oil.
Operation principle according to sensor is different, and lubricating oil detection can be divided into following a few classes：KINETIC METHOD, dielectrophoresis
Method, magnetic separation method, acoustic method etc..This several method has respective advantage and disadvantage：
1) KINETIC METHOD：For dynamics separation method, the geometry of fixed obstacle by decision systems point
From efficiency.And when needing to change separation parameter for those, this will greatly limit the use of this method.
2) dielectrophoresis method：For dielectrophoresis separation method, system needs the extremely complex chip of construction, and
It is difficult to collect the particle of separation.
3) magnetic separation point-score：For magnetic separation separation method, particle must be ferromagnetic particle, this particle to separation
Scope can cause very big limitation.
4) acoustic method：It is this for the separation method of acoustics, it is contemplated that cube being directly proportional for sound power and particle radii
Method is generally not suitable for little particle.
The above method has the deficiencies such as energy supply demand is big, reagent dosage is more, disengaging time is long, separation expense is high
Place, with stronger limitation, it is impossible to inexpensive, quick, the easy detection requirement required for fully meeting at present.
The content of the invention
According to technical problem set forth above, and a kind of low cost, simple structure are provided, rapidly can be divided online
From the device and method that generalization is strong in field, variety classes particle is separate in lubricating oil based on microfluidic chip technology.
The present invention is mainly separated using microfluidic chip technology, centrifugal principle to different types of metallic particles in fluid, and
Detected with LIBS (LIBS) technology, the composition of metal is confirmed, so that for the analysis of liquid provides ginseng
Examine, realize that liquid on-line is detected.
The technological means that the present invention is used is as follows：
The device that particle is separate in a kind of lubricating oil based on microflow control technique, it is characterised in that including：
Micro-fluidic chip, the micro-fluidic chip includes substrate and setting micro-fluidic chip body on the substrate；
The micro-fluidic chip body is provided with a main channel for fluid to be detected flowing, and one is connected with the main channel
For focused particle fluid flowing focus channel, the use being connected with the main channel and the focus channel tail end
In mixing the hybrid channel of fluid to be measured and focused particle fluid, and it is arranged on a plurality of separation of the hybrid channel tail end and leads to
Road；
Micro-injection pump, has two, and one is connected with the main channel inlet opening of the main channel, for pre-set velocity
To be measured fluid of the injection with metallic particles；Another is connected with the focus channel inlet opening of the focus channel, is used to preset
Pure fluid of the speed injection without particle；
LIBS detecting systems, the tail end with each bar split tunnel is connected, and is used to determine the metal types of each split tunnel,
Judge whether to reach separating effect with this.
Two above-mentioned micro-injection pumps, wherein one is connected with the main channel inlet opening of main channel, it is micro by adjusting
The program of syringe pump, is allowed to inject fluid to be measured to main channel in preset speed.Another with the focus channel of focus channel
Inlet opening is connected, and adjusts the program of micro-injection pump, is allowed to flow to focus channel in preset speed, the fluid of focus channel
Effect is exactly the particle in prepare liquid is run close to channel wall, different types of particle is entered in same position
Enter bend, it is because different types of metallic particles density is differed and then different types of according to the principle of centrifugation
The quality of particle is differed, in order to ensure separate accuracy, this separate mode just for similar particle size particle,
According to centrifugal force formula：
On the premise of particle size is approximate, in the case of initial velocity identical, suffered by different types of metallic particles
Centrifugal force is different, therefore different types of particle can form different tracks after bend is entered, different so as to enter
Split tunnel.LIBS detecting systems are connected with split tunnel tail end, are mainly used for each passage after detection separation terminates
Metal species, play a part of a checking, check different types of particle whether enter different split tunnel (LIBS,
LIBS technology, the technology focuses on sample surfaces and forms plasma by ultra-short pulse laser, using light
Spectrometer plasma emission spectrum is analyzed, and the element constituent in sample is recognized with this, and then can carry out material
The identification of material, classification, qualitative and quantitative analysis).
Further, the main channel includes that the master for throwing sample for lubricating oil sample for being arranged at the main channel end is led to
Road inlet opening, the main channel is rectangular passage for longitudinal section.
Further, the focus channel includes being arranged at the focusing for injecting pure fluid of the focus channel end
Passage inlet opening, the focus channel is rectangular passage for longitudinal section, the focus channel and the main channel into 30 °-
90 ° of angle, angle is preferably 30 ° -60 °, and the width of flow path of the aggregation passage is wider than the width of flow path of the main channel, really
The metallic particles of fluid to be measured can be pressed to wall by guarantor, it is moved close to wall.
Generally, the focus channel can reach with the angle of the main channel at 30 ° -90 ° according to required
Effect is selected, and angle is bigger, easier focused particle, particle is moved close to wall.
Further, the head end and tail end of the hybrid channel respectively with the main channel, the focus channel and described
Split tunnel is connected, and the hybrid channel is the curved passage with gentle transition.
Further, the split tunnel include be arranged at the split tunnel tail end for collect separate after metal
The sorting hole of particle, the split tunnel is provided with N bars, a kind of every split tunnel metallic particles of correspondence, and the split tunnel is
Longitudinal section is rectangular passage.
The invention also discloses a kind of separation side of particle sorting apparatus in above-mentioned lubricating oil based on microflow control technique
Method, it is characterised in that comprise the following steps,
S1, two injecting programs of micro-injection pump of debugging, keep it logical to the master respectively with constant speed
Fluid to be measured and pure fluid are injected in road inlet opening and the focus channel inlet opening；
S2, the injection with fluid to be measured and pure fluid, fluid to be measured is by the main channel and pure fluid by described
Focus channel mixes in the hybrid channel, and pure fluid enables the particle in fluid to be measured close to the wall of the hybrid channel
Move in face；
S3, by coutroi velocity, when metallic particles enters the curved passage of the hybrid channel, different type metal
Grain is subject to centrifugal forces to produce different motion track, eventually flow to different split tunnels, converge in sorting hole, lead to
Cross LIBS systems to be detected, confirm metal ingredient, check whether different metallic particles are stayed in the middle of different split tunnels,
Ensure separate accuracy.
Compared with prior art, this has advantages below：
1st, due to the platform as different metal particle in oil and water separation separate using micro-fluidic chip, related detection sets
Standby small volume, relative to large-scale valuable testing equipment, with simple structure, operation easily and the features such as portability.
2nd, the technology used in the present invention and principle are simple, overcome equipment complexity, the low shortcoming of efficiency, while microfluid
Passage design is easy, with very strong actual operation.
3rd, the technology used in the present invention is simple to operate without being marked to sample.
For the foregoing reasons, the present invention is capable of achieving low cost, simply and rapidly carries out ON-LINE SEPARATION, can be in lubricating oil
The fields such as detection are widely popularized.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description does simply to introduce, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of particle sorting apparatus in lubricating oil of the present invention based on microflow control technique.
Fig. 2 is the structural representation of micro-fluidic detection chip of the present invention.
Fig. 3 is the design sketch for using device and method of the invention reached needed for particle is separated.
Fig. 4 is separating resulting figure of the present invention based on the simulation of ansys softwares.
In figure：1st, main channel inlet opening；2nd, focus channel inlet opening；3rd, the first sorting hole；4th, the second sorting hole；5th, it is main logical
Road；6th, focus channel；7th, hybrid channel；8th, the first split tunnel；9th, the second split tunnel；10th, No. 1 micro-injection pump；11、2
Number micro-injection pump；12nd, LIBS detecting systems；13rd, micro-fluidic chip body；14th, substrate.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As shown in Figure 1 and Figure 2, the device that particle is separate in a kind of lubricating oil based on microflow control technique, including：
Micro-fluidic chip, the micro-fluidic chip includes substrate 14 and the micro-fluidic chip master being arranged on the substrate 14
Body 13；The micro-fluidic chip body 13 is provided with a main channel 5 for fluid to be detected flowing, and the main channel 5 is wrapped
The main channel inlet opening 1 that sample is thrown for lubricating oil sample for being arranged at the end of the main channel 5 is included, the main channel 5 is cut for vertical
Face is rectangular passage.
The micro-fluidic chip body 13 be provided with one be connected with the main channel 5 for focused particle fluid stream
Dynamic focus channel 6, the focus channel 6 includes being arranged at the focusing for injecting pure fluid of the end of the focus channel 6
Passage inlet opening 2, the focus channel 6 is rectangular passage, the focus channel 6 and 5 one-tenth of the main channel for longitudinal section
45 degree of angle, the width of flow path of the aggregation passage 6 is wider than the width of flow path of the main channel 5.
The micro-fluidic chip body 13 is provided with one and is connected with the main channel 5 and the tail end of the focus channel 6
The hybrid channel 7 for mixing fluid to be measured and focused particle fluid, the head end and tail end of the hybrid channel 7 respectively with institute
State main channel 5, the focus channel 6 to be connected with the split tunnel, the hybrid channel 7 is curved logical with gentle transition
Road.
The a plurality of split tunnel of the tail end of the hybrid channel 7, the split tunnel includes being arranged at the split tunnel tail
The sorting hole for collecting the metallic particles after separating at end, for two split tunnels are respectively that the first separation is led to shown in Fig. 2
The split tunnel 9 of road 8 and second, the tail end of corresponding first split tunnel 8 is the first sorting hole 3, the tail end of the second split tunnel 9
It is the second sorting hole 4；A kind of every split tunnel metallic particles of correspondence, the split tunnel is rectangular logical for longitudinal section
Road.
Micro-injection pump, has two, is No. 1 micro-injection pump 10 and No. 2 micro-injection pumps 11 in the present embodiment；No. 1
Micro-injection pump 10 is connected with the main channel inlet opening 1 of the main channel 5, for carrying metallic particles with pre-set velocity injection
Fluid to be measured；No. 2 micro-injection pumps 11 are connected with the focus channel inlet opening 2 of the focus channel 6, are injected to pre-set velocity
Without the pure fluid of particle.
LIBS detecting systems 12, the tail end with each bar split tunnel is connected, and is used to determine the metal class of each split tunnel
Type, judges whether to reach separating effect with this.
The invention also discloses the separation method of particle sorting apparatus in the above-mentioned lubricating oil based on microflow control technique, bag
Include following steps,
S1, two injecting programs of micro-injection pump of debugging, keep it logical to the master respectively with constant speed
Fluid to be measured and pure fluid are injected in road inlet opening 1 and the focus channel inlet opening 2；
S2, the injection with fluid to be measured and pure fluid, fluid to be measured is by the main channel 5 and pure fluid by described
Focus channel 6 mixes in the hybrid channel 7, and pure fluid enables the particle in fluid to be measured close to the hybrid channel 7
Wall motion；
S3, by coutroi velocity, when metallic particles enters the curved passage of the hybrid channel 7, different type metal
Particle is subject to centrifugal forces to produce different motion track, eventually flow to different split tunnels, in converging in sorting hole,
Detected by LIBS systems, confirmed metal ingredient, checked different metallic particles whether to stay in different split tunnels and work as
In, it is ensured that the accuracy of separation.
Embodiment 1
The device that particle is separate in lubricating oil based on microflow control technique has said structure, wherein micro-fluidic chip body
13 are made up of PDMS (dimethyl silicone polymer) material, and substrate 14 is made up of PMMA (polymethyl methacrylate), i.e., organic glass
Glass.There is good adhesiveness between PDMS (dimethyl silicone polymer) materials and PMMA materials, and with good chemical lazy
Property.
Main channel 5 is the passage for fluid to be detected flowing in the micro-fluidic chip body 13；Focus channel 6 is profit
The passage of the particle flow of fluid to be measured is focused on pure fluid, mainly, it is close to wall and is moved；Hybrid channel 7, makes difference
The different movement locus of generation of type of metal particle；First split tunnel 8 and the second split tunnel 9, in oil and water separation
Different metal particle.
Dissimilar metals particle in the lubricating oil based on microflow control technique with reference to described in Fig. 1-Fig. 4 illustrates the present embodiment
The operation principle of separator：
First, No. 1 program of micro-injection pump 10 is mixed up, makes the constant speed of its holding toward note in main channel inlet opening 1
Enter fluid to be measured, while mixing up No. 2 programs of micro-injection pump 11, it is kept a constant speed to focus channel feed liquor
Inject pure fluid in hole 2, pure fluid can enable the particle in fluid to be measured in hybrid channel 7 as focusing on fluid effect
Close to wall motion.No. 1 micro-injection pump 10 and No. 2 speed of micro-injection pump 11 will control proper, it is necessary to reach two mesh
's：As shown in Figures 3 and 4, particle will be moved in hybrid channel close to wall first, secondly particle energy when separation bend is entered
Suitable speed is kept, makes different types of metallic particles produce displacement to differ larger movement locus.The control of flow velocity can root
Shown according to the analog result of ansys simulation softwards, first determine a general value, adjust micro manually further according to this end value
The speed setting of syringe pump, e.g., in the dynamic viscosity of copper aluminium hybrid particles is for the lubricant oil solution of 0.03979kg/m.s, in advance
If speed when 0.3-1m/s, can realize preferably separating.
When metallic particles enters the curved passage of hybrid channel 7, due to the centrifugation suffered by dissimilar metals particle
Power is differentiated, so can produce different movement locus after curved passage is entered, eventually flows to different split tunnels.
Final different particle can be converged in different sorting holes, and the metal in sorting hole can be examined by LIBS detecting systems 12
Survey, confirm metal ingredient, check whether different metallic particles are stayed in the middle of different split tunnels, it is ensured that separation it is accurate
Property.
Based on putting forward in microflow control technique, centrifugation principle, used technology and principle compares the present invention
Simply, and the detection means equipment it is fairly simple, be easy to carry, and detection low cost, it is adaptable to on-line checking, is different
Metallic particles is distinguished and provides a kind of new detection method.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (6)
1. the device that particle is separate in a kind of lubricating oil based on microflow control technique, it is characterised in that including：
Micro-fluidic chip, the micro-fluidic chip includes substrate (14) and the micro-fluidic chip master being arranged on the substrate (14)
Body (13)；The micro-fluidic chip body (13) is provided with a main channel (5) for fluid to be detected flowing, one and institute
State the focus channel (6) for the flowing of focused particle fluid that main channel (5) is connected, one with the main channel (5) and institute
The hybrid channel (7) for mixing fluid to be measured and focused particle fluid that focus channel (6) tail end is connected is stated, and is set
In a plurality of split tunnel of the hybrid channel (7) tail end；
Micro-injection pump, has two, and one is connected with the main channel inlet opening (1) of the main channel (5), for default speed
Degree to be measured fluid of the injection with metallic particles；Another is connected with the focus channel inlet opening (2) of the focus channel (6),
The pure fluid without particle is injected to pre-set velocity；
LIBS detecting systems (12), the tail end with each bar split tunnel is connected, and is used to determine the metal types of each split tunnel
Judge whether to reach separating effect.
2. the device that particle is separate in the lubricating oil based on microflow control technique according to claim 1, it is characterised in that institute
Main channel (5) is stated including being arranged at the main channel inlet opening (1) that sample is thrown for lubricating oil sample of the main channel (5) end,
The main channel (5) is rectangular passage for longitudinal section.
3. the device that particle is separate in the lubricating oil based on microflow control technique according to claim 1, it is characterised in that institute
Focus channel (6) is stated including being arranged at the focus channel inlet opening for injecting pure fluid of the focus channel (6) end
(2), the focus channel (6) for longitudinal section be rectangular passage, the focus channel (6) and the main channel (5) into
30 ° -90 ° of angle, the width of flow path of the aggregation passage (6) is wider than the width of flow path of the main channel (5).
4. the device that particle is separate in the lubricating oil based on microflow control technique according to claim 1, it is characterised in that institute
State the head end and tail end of hybrid channel (7) respectively with the main channel (5), the focus channel (6) and the split tunnel phase
Even, the hybrid channel (7) is the curved passage with gentle transition.
5. the device that particle is separate in the lubricating oil based on microflow control technique according to claim 1, it is characterised in that institute
Stating split tunnel includes being arranged at the sorting hole for collecting the metallic particles after separating of the split tunnel tail end, described point
N bars are provided with from passage, every split tunnel corresponds to a kind of metallic particles, and the split tunnel is rectangular logical for longitudinal section
Road.
6. in a kind of lubricating oil based on microflow control technique as described in claim 1-5 any one particle sorting apparatus point
From method, it is characterised in that comprise the following steps,
S1, two injecting programs of micro-injection pump of debugging, make its holding enter to the main channel respectively with constant speed
Injection fluid to be measured and pure fluid in fluid apertures (1) and the focus channel inlet opening (2)；
S2, the injection with fluid to be measured and pure fluid, fluid to be measured is by the main channel (5) and pure fluid by described poly-
Burnt passage (6) mixing in the hybrid channel (7), pure fluid enables the particle in fluid to be measured close to the hybrid channel
(7) wall motion；
S3, by coutroi velocity, when metallic particles enters the curved passage of the hybrid channel (7), different type metal
Grain is subject to centrifugal forces to produce different motion track, eventually flow to different split tunnels, converge in sorting hole, lead to
Cross LIBS systems to be detected, confirm metal ingredient, check whether different metallic particles are stayed in the middle of different split tunnels,
Ensure separate accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710028821.XA CN106769361A (en) | 2017-01-16 | 2017-01-16 | The device and method that particle is separate in a kind of lubricating oil based on microflow control technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710028821.XA CN106769361A (en) | 2017-01-16 | 2017-01-16 | The device and method that particle is separate in a kind of lubricating oil based on microflow control technique |
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| CN106769361A true CN106769361A (en) | 2017-05-31 |
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| CN201710028821.XA Pending CN106769361A (en) | 2017-01-16 | 2017-01-16 | The device and method that particle is separate in a kind of lubricating oil based on microflow control technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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