CN109870409A - A kind of microscopic observation device in molecule intrusion gap - Google Patents

A kind of microscopic observation device in molecule intrusion gap Download PDF

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Publication number
CN109870409A
CN109870409A CN201910321846.8A CN201910321846A CN109870409A CN 109870409 A CN109870409 A CN 109870409A CN 201910321846 A CN201910321846 A CN 201910321846A CN 109870409 A CN109870409 A CN 109870409A
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CN
China
Prior art keywords
plate
particle
spool
cover plate
gap
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Pending
Application number
CN201910321846.8A
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Chinese (zh)
Inventor
冀宏
陈乾鹏
张建军
袁海丽
赵晶
范帅
袁强
徐瑞
袁清云
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Lanzhou University of Technology
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Lanzhou University of Technology
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Priority to CN201910321846.8A priority Critical patent/CN109870409A/en
Publication of CN109870409A publication Critical patent/CN109870409A/en
Pending legal-status Critical Current

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Abstract

A kind of microscopic observation device in molecule intrusion gap, simplify composition experiment valve port and micron interstitial in spool (4) insertion lower plate (2), spool fixing screws (6), which pass through, simplifies spool (4), and it is screwed into lower plate (2), micron particles (7) are added in particle injector (3), and it is inserted into upper cover plate (1), tapered transparent glass (5) are embedded in upper cover plate (1), large sealing packing ring (10) are packed into lower plate (2), pass through screw assembly upper cover plate (1) and lower plate (2), tightening screw compresses large sealing packing ring (10), and contact upper cover plate (1) with lower plate (2), lower plate (2) is fixed on locating support (8), microscope (9) light source is placed in below lower plate (2), its camera lens is located above tapered transparent glass (5) and is directed at simplified valve Core (4).

Description

A kind of microscopic observation device in molecule intrusion gap
Technical field
The present invention relates to antipollution hydraulic efficiency slide valve technology more particularly to the observation technologies of particle intrusion slide valve.
Background technique
Slide valve is the important control element in hydraulic system, has very high accuracy, control characteristic directly affects whole The reliability and security of machine work.Gap between valve core of the spool valve and valve body is usually between 5 μm~30 μm, in micro-meter scale On, the roughness of spool face can not be ignored.Slide valve after a period of operation, can usually generate small due to friction Furthermore grain also has partial particulate from external environment and invades oil liquid, can be in pressure difference when carrying the oil liquid of micron particles by valve port Under the action of invade slide valve gap, at this time when slide valve acts, slide valve gap generates variation, and irregular microscopic particles can be caught in The micro-roughened surface of slide valve leads to slide valve clamping stagnation, to influence the operability of complete machine, or even causes safety accident.
Currently, molecule pollutes slide valve gap, the problem of leading to slide valve clamping stagnation, industry and the pass of scholar have been caused Note, but since slide valve valve body generallys use opaque metal material, and work at elevated pressures, and due to pollution Grain and slide valve gap size are usually other in the micron-scale, this brings difficulty to the observation inside slide valve, therefore most researchs are adopted The phenomenon that being carried out with numerical simulation means, invading slide valve to micron particles also only rests on the theory analysis stage, does not have also and passes through Experiment captures the correlative study in micron particles intrusion slide valve gap, does not also find the open source information of related experiment device.Therefore such as What contrived experiment device observes that micron particles invade the process in slide valve gap by experimental method, and discloses slide valve clamping stagnation Microcosmic mechanism is problem to be solved of the present invention.
Summary of the invention
The object of the present invention is to provide a kind of microscopic observation devices in molecule intrusion gap.
The present invention is a kind of valve port throttling heating and thermal deformation measurement device, by upper cover plate 1, lower plate 2, particle injector 3, simplify spool 4, tapered transparent glass 5, spool fixing screws 6, micron particles 7, locating support 8, microscope 9, large sealing packing ring 10 compositions simplify spool 4 and are embedded in composition experiment valve port and micron interstitial in lower plate 2, and spool fixing screws 6, which pass through, simplifies spool 4, and be screwed into lower plate 2, micron particles 7 are added in particle injector 3, and be inserted into upper cover plate 1, cone is embedded in upper cover plate 1 Shape transparent glass 5 is packed into large sealing packing ring 10 in lower plate 2, assembles upper cover plate 1 and lower plate 2 by screw, tightening screw makes greatly Sealing ring 10 compresses, and contacts upper cover plate 1 with lower plate 2, and lower plate 2 is fixed on locating support 8, and 9 light source of microscope is set In 2 lower section of lower plate, camera lens is located at 5 top of tapered transparent glass and is directed at simplified spool 4.
The present invention is compared with background technique, has the beneficial effect that 5 small end of tapered transparent glass upward, is embedded in upper cover In plate 1, the compressive resistance of device is improved;Spool 4 will be simplified and be placed in 5 lower section of tapered transparent glass, and observed by microscope 9 The movement of micron particles object;Change the minim gap for simplifying spool 4 and constituting with 2 deep gouge of lower plate by Precision Machining;Design Special particle injector 3, the process for making particle that experimental provision be added is convenient and efficient, and can effectively prevent particle and fall with oil liquid Stream.The present invention provides it is a kind of it is easy to operate, stress levels are high, slip is low, the particle of micron interstitial fine adjustment can be achieved Movement observations device.
Detailed description of the invention
Fig. 1 is gap particle experimental bench axonometric drawing, and Fig. 2 is gap particle experimental provision installation diagram, and Fig. 3 Fig. 3 is gap Grain experimental provision axonometric drawing, Fig. 4 are simplified spool and lower plate installation diagram, and Fig. 5 is upper cover plate part, and Fig. 6 is particle injection dress Set cross-sectional view.
Specific embodiment
As shown in Fig. 1 ~ Fig. 4, the present invention is a kind of valve port throttling heating and thermal deformation measurement device, by upper cover plate 1, bottom Plate 2, particle injector 3 simplify spool 4, tapered transparent glass 5, spool fixing screws 6, micron particles 7, locating support 8, show Micro mirror 9, large sealing packing ring 10 form, and simplify spool 4 and are embedded in composition experiment valve port and micron interstitial in lower plate 2, the fixed spiral shell of spool Nail 6, which passes through, simplifies spool 4, and is screwed into lower plate 2, micron particles 7 is added in particle injector 3, and be inserted into upper cover plate 1, It is embedded in tapered transparent glass 5 in upper cover plate 1, is packed into large sealing packing ring 10 in lower plate 2, upper cover plate 1 and bottom are assembled by screw Plate 2, tightening screw compresses large sealing packing ring 10, and contacts upper cover plate 1 with lower plate 2, and lower plate 2 is fixed on locating support 8 On, 9 light source of microscope is placed in 2 lower section of lower plate, and camera lens is located at 5 top of tapered transparent glass and is directed at simplified spool 4.
As shown in figure 4, being additionally provided with seal groove 2a, drain pan 2b, particle entrance 2c, entrance stream in the lower plate 2 Road 2d, outlet flow 2e, lower plate screw hole 2f, the width of entrance channel 2d are significantly narrower than outlet flow 2e, use up higher-pressure region It measures small, improves safety, particle entrance 2c is set in entrance channel 2d, and micron particles 7 is made thus to enter valve port, drain pan 2b It is connected to and simplifies the gap back cavity that spool 4 is constituted with lower plate 2, and be connected with outlet flow 2e, make to have before and after slide valve gap Micron particles 7 are then imported slide valve gap by obvious pressure difference, in addition, drain pan 2b is further placed in entrance channel 2d surrounding, and Simplify the high-voltage end of spool 4, and communicated with outlet flow 2e, when entrance channel 2d inner fluid pressure is higher, oozes out entrance stream The oil liquid of road 2d is imported into drain pan 2b, is then introduced into outlet flow 2e, to guarantee entrance channel 2d not because of oil liquid pressure Excessively high and make 5 deformation fracture of tapered transparent glass, seal groove 2a arranges that outside is evenly distributed with lower plate spiral shell along 2 edge of lower plate Nail hole 2f.
As shown in figure 5, being additionally provided with particle injector interface 1a, observation window 1b, upper cover plate spiral shell on the upper cover plate 1 Nail hole 1c, stiffener plate 1d, upper cover plate screw hole 1c processing corresponding with lower plate screw hole 2f, when upper cover plate 1 and lower plate 2 are matched After conjunction installs, the concentric position that particle entrance 2c is corresponded on upper cover plate 1 opens up particle injector interface 1a, particle injector Interface 1a inner cylinder face opens up screw thread, and to insert particle injector 3, the corresponding position for simplifying spool 4 is opened up on upper cover plate 1 Taper observation window 1b, to install tapered transparent glass 5, installation method can also be sealed by bonding by compressing Circle, to guarantee to seal, stiffener plate 1d is stretched out to quadrangle centered on observation window 1b, to increase the rigidity of upper cover plate 1, is made It does not cause to deform because of the high-voltage oil liquid in entrance channel 2d.
As shown in figure 4, due to the viscous drag that valve port throttling action and micron interstitial boundary layer generate, so that described enters Mouthful runner 2d, the inner volume for simplifying spool 4, the pressure of outlet flow 2e and gap back cavity are all different, therefore micron Grain 7 will be different with the phenomenon that liquid stream intrusion gap with mechanism under the action of different pressure differences, therefore when microscope 9 is observed When, tetra- points of observation of A, B, C, D are taken, in addition, also kinetic characteristic of the observable particle in different shape balancing slits.
As shown in Fig. 4, Fig. 4, the upper cover plate 1 can only guarantee microscope 9 while observe A, location of C, when needing to see When surveying the position B, D, replaceable upper cover plate 1, and tapered transparent window 1b is opened in the position corresponding to B, D.
As shown in fig. 6, being additionally provided with lead screw knob 3a, feed screw nut 3b, sealing piston on the particle injector 3 3c, piston seal 3d, injection sleeve 3e, cone valve epicoele 3f, poppet valve core 3g, cone valve cavity of resorption 3h, conical valve base 3i, reset spring 3j, particle injection port 3k, lead screw knob 3a screw-in feed screw nut 3b, sealing piston 3c and lead screw knob 3a welding pass through spiral shell Line connection, piston seal 3d cover on the outside of sealing piston 3c, feed screw nut 3b are screwed into the upper end injection sleeve 3e, makes to seal Piston 3c is assembled to top half inside injection sleeve 3e, and reset spring upper end 3j covers on poppet valve core 3g, and lower end is against The upper end grain injection port 3k, the upper end poppet valve core 3g and conical valve base 3i cooperate, and the lower end conical valve base 3i resists the upper surface particle injection port 3k, Upper end cap is cooperated by way of thread cartridge with injection sleeve 3e inside injection sleeve 3e, by particle injection port 3k, So that poppet valve core 3g, conical valve base 3i, reset spring 3j is fixed on lower half portion inside injection sleeve 3e together, removes particle injection port Outside 3k, the position for being related to cone valve epicoele 3f and cone valve cavity of resorption 3h sealing is respectively mounted sealing ring.
As shown in Fig. 2, Fig. 6, under conditions of assembling completion, the course of work is the particle injector 3: opening silk Sealing piston 3c is taken out injection sleeve 3e, the micron particles 7 of specified quantity is added in cone valve epicoele 3f by thick stick nut 3b, Feed screw nut 3b is covered, after checking good seal, particle injector 3 is inserted on particle injector interface 1a, when experiment fills When oil liquid flowing in setting is stablized, rotating threaded shaft knob 3a moves down sealing piston 3c, and poppet valve core 3g is pushed to overcome reset Spring 3j power moves down, and opens valve port, and micron particles 7 enter cone valve cavity of resorption 3h under the action of hydraulic power and gravity, then Enter entrance channel 2d by particle entrance 2c, completes primary particle addition movement.
After being added to experimental provision due to particle, entire experiment hydraulic system can be polluted, causing to hydraulic power supply can not Inverse damage, therefore select vertically-mounted hydraulic cylinder as power source matched with the experimental provision, by cylinder rod Top increases and decreases counterweight, changes experimental pressure, installs fuel tank in experimental provision exit, the fuel tank and fuel tank used in oil cylinder are mutually only It is vertical, avoid the particle contamination oil cylinder of outfolw experiment device.

Claims (4)

1. a kind of microscopic observation device in molecule intrusion gap, by upper cover plate (1), lower plate (2), particle injector (3), Simplify spool (4), tapered transparent glass (5), spool fixing screws (6), micron particles (7), locating support (8), microscope (9), large sealing packing ring (10) forms, it is characterised in that simplifies in spool (4) insertion lower plate (2) between composition experiment valve port and micron Gap, spool fixing screws (6), which pass through, simplifies spool (4), and is screwed into lower plate (2), and micron is added in particle injector (3) Grain (7), and by being embedded in tapered transparent glass (5) in upper cover plate (1) in screw thread insertion upper cover plate (1), dress in lower plate (2) Enter large sealing packing ring (10), by screw assembly upper cover plate (1) and lower plate (2), tightening screw compresses large sealing packing ring (10), and Contact upper cover plate (1) with lower plate (2), lower plate (2) is fixed on locating support (8), and microscope (9) light source is placed in bottom Below plate (2), camera lens is located above tapered transparent glass (5) and is directed at simplified spool (4).
2. the microscopic observation device in molecule intrusion according to claim 1 gap, it is characterised in that the bottom Be additionally provided in plate (2) seal groove (2a), drain pan (2b), particle entrance (2c), entrance channel (2d), outlet flow (2e), Lower plate screw hole (2f), the width of entrance channel (2d) are significantly narrower than outlet flow (2e), particle entrance (2c) be set into In mouth runner (2d), drain pan (2b), which is connected to, simplifies the gap back cavity that spool (4) and lower plate (2) are constituted, and and outlet flow (2e) is connected, in addition, drain pan (2b) is further placed in entrance channel (2d) surrounding, and simplifies the high-voltage end of spool (4), and It is communicated with outlet flow (2e), seal groove (2a) arranges that outside is evenly distributed with lower plate screw hole along lower plate (2) edge (2f).
3. the microscopic observation device in molecule intrusion according to claim 1 gap, it is characterised in that the upper cover Particle injector interface (1a), observation window (1b), upper cover plate screw hole (1c), stiffener plate (1d) are additionally provided on plate (1), Upper cover plate screw hole (1c) processing corresponding with lower plate screw hole (2f), when upper cover plate (1) and lower plate (2) is coupled Afterwards, the concentric position that particle entrance (2c) is corresponded on upper cover plate (1) opens up particle injector interface (1a), and particle injector connects Mouth (1a) inner cylinder face opens up screw thread, and the corresponding position for simplifying spool (4) opens up taper observation window on upper cover plate (1) (1b), stiffener plate (1d) are stretched out centered on observation window (1b) to quadrangle.
4. the microscopic observation device in molecule intrusion according to claim 1 gap, it is characterised in that the particle Lead screw knob (3a), feed screw nut (3b), sealing piston (3c), piston seal (3d), injection are additionally provided on syringe (3) Device stack shell (3e), cone valve epicoele (3f), poppet valve core (3g), cone valve cavity of resorption (3h), conical valve base (3i), reset spring (3j), particle Injection port (3k), lead screw knob (3a) screw in feed screw nut (3b), and sealing piston (3c) and lead screw knob (3a) are welded or led to Threaded connection is crossed, piston seal (3d) covers on the outside of sealing piston (3c), and feed screw nut (3b) is screwed into injection sleeve The upper end (3e) makes sealing piston (3c) be assembled to the internal top half of injection sleeve (3e), and reset spring upper end (3j) covers On poppet valve core (3g), lower end is against the upper end particle injection port (3k), and the poppet valve core upper end (3g) and conical valve base (3i) cooperate, conical valve base The lower end (3i) resists the upper surface particle injection port (3k), and upper end cap is internal in injection sleeve (3e), by particle injection port (3k) Cooperated by way of thread cartridge with injection sleeve (3e), makes poppet valve core (3g), conical valve base (3i), reset spring (3j) one It is related to cone valve epicoele (3f) and cone in addition to particle injection port (3k) with the internal lower half portion of injection sleeve (3e) is fixed on The position of valve cavity of resorption (3h) sealing is respectively mounted sealing ring.
CN201910321846.8A 2019-04-22 2019-04-22 A kind of microscopic observation device in molecule intrusion gap Pending CN109870409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910321846.8A CN109870409A (en) 2019-04-22 2019-04-22 A kind of microscopic observation device in molecule intrusion gap

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Application Number Priority Date Filing Date Title
CN201910321846.8A CN109870409A (en) 2019-04-22 2019-04-22 A kind of microscopic observation device in molecule intrusion gap

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Publication Number Publication Date
CN109870409A true CN109870409A (en) 2019-06-11

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101435764A (en) * 2007-11-12 2009-05-20 深圳迈瑞生物医疗电子股份有限公司 Particle analyzer and particle analysis method
US7545490B1 (en) * 2006-09-26 2009-06-09 Itt Manufacturing Enterprises, Inc. Microscope flow cell apparatus for raman analysis of a liquid
CN102049231A (en) * 2009-10-26 2011-05-11 荷兰癌症研究基金会 Micro-reactor for observing particles in fluid
CN202836525U (en) * 2012-08-20 2013-03-27 浙江枫林汽车零部件有限公司 CVT (Continuously Variable Transmission) hydraulic valve plate detecting device
CN203870028U (en) * 2014-05-09 2014-10-08 扬州大学 Microscopic observation device for liquid pressurizing process
CN206248502U (en) * 2016-12-03 2017-06-13 中国计量大学 A kind of photomicrography experimental provision on soft particle rheological behavior
CN107133395A (en) * 2017-04-26 2017-09-05 北京航空航天大学 A kind of flow guiding valve erosive wear computational methods based on dynamic pollution granule density
WO2018189274A1 (en) * 2016-04-15 2018-10-18 Rap.Id Particle Systems Gmbh Liquid cell for the microscopic imaging and raman spectroscopic material analysis of particles suspensions
CN109569753A (en) * 2018-12-29 2019-04-05 北京工业大学 A kind of micro-fluidic chip lane device of PM2.5 powder collection and experimental observation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7545490B1 (en) * 2006-09-26 2009-06-09 Itt Manufacturing Enterprises, Inc. Microscope flow cell apparatus for raman analysis of a liquid
CN101435764A (en) * 2007-11-12 2009-05-20 深圳迈瑞生物医疗电子股份有限公司 Particle analyzer and particle analysis method
CN102049231A (en) * 2009-10-26 2011-05-11 荷兰癌症研究基金会 Micro-reactor for observing particles in fluid
CN202836525U (en) * 2012-08-20 2013-03-27 浙江枫林汽车零部件有限公司 CVT (Continuously Variable Transmission) hydraulic valve plate detecting device
CN203870028U (en) * 2014-05-09 2014-10-08 扬州大学 Microscopic observation device for liquid pressurizing process
WO2018189274A1 (en) * 2016-04-15 2018-10-18 Rap.Id Particle Systems Gmbh Liquid cell for the microscopic imaging and raman spectroscopic material analysis of particles suspensions
CN206248502U (en) * 2016-12-03 2017-06-13 中国计量大学 A kind of photomicrography experimental provision on soft particle rheological behavior
CN107133395A (en) * 2017-04-26 2017-09-05 北京航空航天大学 A kind of flow guiding valve erosive wear computational methods based on dynamic pollution granule density
CN109569753A (en) * 2018-12-29 2019-04-05 北京工业大学 A kind of micro-fluidic chip lane device of PM2.5 powder collection and experimental observation

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