CN208034441U - Auxiliary electrode focused nano-fluid electrostatic atomization controllable transport micro-lubricating system - Google Patents
Auxiliary electrode focused nano-fluid electrostatic atomization controllable transport micro-lubricating system Download PDFInfo
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- CN208034441U CN208034441U CN201721869146.5U CN201721869146U CN208034441U CN 208034441 U CN208034441 U CN 208034441U CN 201721869146 U CN201721869146 U CN 201721869146U CN 208034441 U CN208034441 U CN 208034441U
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- Electrostatic Spraying Apparatus (AREA)
Abstract
The utility model discloses a controllable micro-lubricating system that transports of nano-fluid electrostatic atomization of auxiliary electrode focus, it has solved the problem that the sedimentation rate of micro-lubricating liquid is low among the prior art, has the beneficial effect that changes atomizing toper state, deposition area and the shape of droplet crowd, and its scheme is as follows: a nozzle for nano-fluid minimal quantity lubricating liquid comprises a gas-liquid mixing component, a corona discharge component and an auxiliary electrode focusing component; the nozzle is connected with the liquid supply system and the gas supply system; the corona discharge component is connected with the negative electrode of the adjustable high-voltage direct-current power supply, and the positive electrode of the corona discharge component is connected with the workpiece power-up component and grounded to form a needle-plate negative corona discharge electric field; the auxiliary electrode focusing component is positioned below the corona area and is connected with the negative electrode of the power converter, and the positive electrode of the auxiliary electrode focusing component is grounded to form an additional electric field; the micro-lubricating liquid is atomized and sprayed out under the action of the nozzle gas-liquid mixing cavity to form a fog drop group, charged and secondarily atomized in a discharge electric field, collected and focused towards the central axis under the action of the auxiliary electrode focusing component, and controllably transported to a grinding area.
Description
Technical field
The utility model is related to Grinding Technology field, the nano-fluid focused more particularly to a kind of auxiliary electrode is quiet
Electrospray controllably transports lubricating system with trace amount.
Background technology
Minimal Quantity Lubrication Technology is a kind of typical environmental-friendly Green Cutting Technologies, by micro lubricating fluid and with certain
The compressed air mixed aerosol of pressure, injection to grinding area carry out cooling profit to the contact surface of grinding wheel and abrasive dust, grinding wheel and workpiece
It is sliding.This technology uses (the about tradition cast of minimal grinding fluid under the premise of ensureing effectively lubricating and cooling effect
The some thousandths of of formula lubricating system dosage), cost and the pollution to environment and the injury to human body can be reduced.And droplet
The deposition of particle diameter distribution and grinding area is to influence the key factor of cooling and lubricating performance, therefore improve atomization distributing homogeneity
Effective deposition with grinding area is necessary.
Exactly nanoscale solids particle, which is added in micro lubricating fluid media (medium), for nanometer jet stream micro lubricating is made nanometer stream
Body, i.e. nano-particle, lubricant (oil or oil water mixture) spray into grinding with after high pressure gas mixed aerosol with pattern
Area.By enhanced heat exchange theory it is found that the heat-transfer capability of solid is much larger than liquids and gases.The thermal coefficient of solid material under room temperature
Several orders of magnitude bigger than fluent material.Solids are added in micro lubricating medium, leading for fluid media (medium) can be dramatically increased
Hot coefficient, improves the ability of convective heat transfer, greatly makes up the insufficient defect of micro lubricating cooling capacity.In addition, nano-particle
(referring to the ultra-fine minute solid particles that size is 1-100nm) also has special antiwear and antifriction and height in terms of lubricating with tribology
The tribological properties such as bearing capacity.
Electrostatic atomization technology be high-pressure electrostatic participation under liquid crushing at charged drop process.Liquid medium is by spray
Keep liquid charged by different methods when mouth, accelerates the rupture of drop by reducing the surface tension of drop, formed charged
Droplet group can effectively improve the uniformity of Pcnten-1 yne-4, enhance the adsorptivity of droplet object, deposition efficiency and wetting infiltration
Property, it is widely used in the fields such as pesticide spray, inkjet printing and Electrostatic greasing.
Through retrieval, a kind of nano-particle jet stream micro lubricating grinding three-phase of the utility models such as Qingdao Technological University Lee long river
Flow the feed system (patent No.：201110221543.2), which is delivered to nano-fluid at nozzle through fluid path, while high pressure
Gas enters nozzle through gas circuit, and high pressure gas is sufficiently mixed atomization with nano-fluid in nozzle mixing chamber, and accelerated room accelerates
Enter minor air cell afterwards, while compressed gas enters through minor air cell's venthole, so that three-phase flow is further rotated mixing and accelerates, then
Three-phase flow is sprayed through jet expansion to grinding area in the form of atomized drop.Since pneumatic mode atomization process is unstable, it is difficult to
By controlling aerodynamic parameter control atomization result.
Nano-particle jet stream controllably transports micro- under a kind of magnetic enhancing electric field of the utility models such as Qingdao Technological University Lee long river
The amount lubrication grinding equipment (patent No.：201310634991.4), by increasing magnetic field around corona zone, droplets amount is improved.
It includes the external nozzle for being equipped with high-magnitude DC electrostatic generator and magnetic field forming device；Nozzle and nano-particle liquid-supplying system,
Air supply system connects；The cathode of high-magnitude DC electrostatic generator and adjustable high voltage D. C connects；Adjustable high voltage D. C
Anode then connect with the workpiece power-up device for being used to attach to workpiece not finished surface, to form the shape of negative corona discharge
Formula；It is magnetic field forming device around the corona zone of static discharge；Grinding nanometer fluid liquid is atomized into from the ejection of the nozzle of nozzle
While drop to droplets and grinding area is admitted under the action of high-magnitude DC electrostatic generator and magnetic field forming device.
Using in the case of magnetic field-enhanced corona discharge, Coulomb force makes to electronically form Rameau fortune with Lorentz force collective effect this equipment
It is dynamic, the collision of free electron and air molecule is increased, ionization enhancing, particle is charged more fully, but can not accomplish to control
The depositional area and shape of charged droplets optimize lubricating fluid atomizing effect and deposition efficiency.
Yang Enlong etc. discloses a kind of multiple injector electrostatic spinning device (patent No. equipped with conical auxiliary electrode：
201110124305.X), the device is by having conical auxiliary electrode, polytetrafluoroethylene (PTFE) spinneret, polytetrafluoroethylene (PTFE) holder
The devices such as plate, rubber tube, more nozzles, reservoir realize the process of electrostatic spinning.Two are installed near Metallic Nozzle At The Ingot completely
Identical cone auxiliary electrode, is also secured on polytetrafluoroethylene (PTFE) spinneret.During electrostatic spinning, auxiliary electrode
In the presence of interfering with each other for electric field between nozzle is reduced, change original electric field, playing the role of stable jet stream improves field distribution, from
Prepared by nanofiber it is thinner, fibre web is evenly.But conical auxiliary electrode and nozzle are each attached on spinneret, and form is solid
Determine underaction.
The utility models such as Li Zhou a kind of electrostatic spinning system and the electrospinning process (patent No. with auxiliary electrode：
201310488427.6), which includes barrel, nozzle, the first high voltage power supply, receiving device, the second high voltage power supply, auxiliary electricity
Pole and mobile controller, wherein nozzle is located at auxiliary electrode above and below receiving device；Nozzle is fixed not
Dynamic, auxiliary electrode can move under the control of mobile controller；First high voltage power supply be used for receiving device and barrel it
Between formed difference be V1First voltage it is poor, the second high voltage power supply be used between receiving device and auxiliary electrode formed difference is
V2Second voltage it is poor, it is V to make voltage difference between barrel and auxiliary electrode1With V2The sum of.Auxiliary electrode is utilized in the device
Enable the nanofiber sprayed when electrospinning according to auxiliary by mobile auxiliary electrode the draw of nanofiber
The mobile route of electrode is deposited into corresponding pattern.But the form that cannot change nanofiber optimizes the effect of electrostatic spinning.
Existing apparatus has using two permanent magnets staggered relatively and a pair of of spray electrode, in diamond abrasive grain jeting area
The interior electric field and gradient magnetic for forming strength of stability, diamond abrasive grain drop is into receiver board course of injection by the side of field wire arrangement
To movement, the drift of drop can be reduced and increase the atomizing angle of injection, to make diamond abrasive grain be evenly distributed.Thus it prepares
The equally distributed grinding wheel of abrasive grain have many advantages, such as that the surface quality of processing is high, grinding efficiency is high.The discharge electric field office of the device
For limit between pin electrode and electrode retaining collar, the fixation of electrode ring position is dumb, cannot be risen to deposition effect of the droplet on receiver board
To control action.
Therefore, it is necessary to the nano-fluid electrostatic atomizations focused to a kind of auxiliary electrode controllably to transport lubricating system with trace amount progress
Research.
Utility model content
A kind of in order to overcome the deficiencies of the prior art, the utility model provides nano-fluid electrostatic that auxiliary electrode focuses
Atomization controllably transports lubricating system with trace amount, by the way that auxiliary electrode is arranged, to change atomization cone shape, the depositional area of droplet group
And shape, improve the deposition and effective rate of utilization of micro lubricating liquid.
A kind of concrete scheme that the nano-fluid electrostatic atomization that auxiliary electrode focuses controllably transports lubricating system with trace amount is as follows：
A kind of nano-fluid micro lubricating liquid nozzle, including：
Inside is provided with the internals of gas-liquid mixed chamber；
Outer nozzle wall is placed on outside internals, and air cavity is formed between internals and outer nozzle wall, outer nozzle wall end and gas-liquid
Mixing chamber communicates, which is provided with groove so that corona discharge device is arranged, and internals are provided with stomata so that air cavity and gas-liquid mixed chamber
It communicates；
Auxiliary electrode component, including be connected by connection slide bar and outer nozzle wall and can be moved up and down relative to outer nozzle wall
Electrode retaining collar, and/or set on the plate electrode of outer nozzle wall both sides adjustable angle, auxiliary electrode component is set to corona discharge device
Lower section is connect with power converter cathode, and power converter anode connects adjustable high voltage D. C, forms additional electric field.
Tapered electrode ring or plate electrode are identical as discharge electrode polarity as auxiliary electrode, corona discharge device with can
Tuning DC high voltage power supply cathode connects, and forms needle-plate negative corona discharge electric field, the identical charged droplet of polarity is by assisting electricity
When pole, by the additional electrical field force for being directed toward central axis, to change atomization cone shape, depositional area and the shape of droplet group,
Improve the deposition and effective rate of utilization of micro lubricating liquid.
Wherein, the air cavity is equipped with along the axis direction of internals at two, and the outer nozzle wall, which is provided with, to be communicated with air cavity
Gas access, compressed gas enters air cavity by gas access, then enters gas-liquid mixed chamber by stomata.
Further, the air cavity close to corona discharge device setting is inversed cone ring slit, and another air cavity is ring
The grinding nanometer fluid liquid of jet expansion is carried away by the setting of inversed cone ring slit air cavity, realizes liquid jet by shape
It is repeatedly broken, it can effectively solve the problems, such as that the larger lubricating fluid of viscosity is difficult to rupture atomization.
Further, the corona discharge device includes electrode, and electrode is L-type needle electrode, and electrode is along the circumferential direction set
Have it is multiple, the electrode by electrode tray be set to outer nozzle wall end recesses in；
Further, electrode tray is along the circumferential direction provided with the radial electrode needle slot for fixing electrode, electrode tray
It is circumferentially provided with high-tension bus-bar axial pass trough in the middle part of cross section, is radially provided with high-tension bus-bar radially through groove, electrode Aculeata is set
There is L-type needle electrode wiring hole, the series connection of multiple electrodes needle is realized in high-tension bus-bar axial pass trough.
Further, the locating ring for fixing electrode tray is arranged in groove end side, and locating ring along the circumferential direction symmetrically makes
It is fixedly connected with outer nozzle wall with 4 screws and electrode tray is positioned.
Further, gas-liquid mixed chamber passes through as upper direct current section, accelerating sections, trunnion section and flaring
Section, the direct current section under the divergent segment end set, upper direct current section, trunnion section and lower direct current section are cylinder, and accelerating sections is
Rounding stage body, divergent segment are round estrade；
Further, direct current section is provided with rotation direction stomata I clockwise in internals, and compressed gas enters after gas-liquid mixed chamber to receiving
Rice fluid lubrication liquid causes one-shot to shear, and internals trunnion section is provided with rotation direction stomata II counterclockwise, the stomata row of reversed rotation direction
Cloth strengthens shear action of the compressed gas to lubricating fluid.
Further, the shaft shoulder is arranged in the internals one end, and the shaft shoulder is connected with outer nozzle wall, is located by connecting by screw；
Further, prominent outer nozzle wall setting at the top of internals.
Wherein, the electrode retaining collar is tapered electrode ring, which has setpoint distance apart from internals electrode；
Further, sliding slot is arranged in the outer nozzle wall both sides, and positioning bolt is arranged in sliding slot, and connection slide bar includes connecting
Bar and sliding block, connecting rod top are connect with positioning bolt, and connecting rod bottom is connect with tapered electrode ring, and the setting of connecting rod side is embedded in sliding slot
Interior sliding block, connecting rod drive tapered electrode ring to move up and down, and realize and carry out height adjustment and fixation to tapered electrode ring.
Further, the plate electrode is set to plate electrode placement plate, and plate electrode placement plate connects set on plate electrode
Bar bottom and relative to the rotatable setting of plate electrode connecting rod, plate electrode connecting rod (passes through the cunning in sliding slot of its side
Block) it is moved up and down in the sliding slot of outer nozzle wall, it is respectively provided with angle positioning in plate electrode connecting rod and plate electrode connecting rod side
Ring, angle locating ring are provided with arc chute, and the T-bolt slided in arc chute is arranged in plate electrode connecting rod side；Angle
Locating ring is carved with graduation mark with angle to adjust the angle of plate electrode and central axis.
Therefore, to meet requirement, 2 sliding slots are set in outer nozzle wall, outer nozzle wall both sides are provided with two sliding slots, this
Two sliding slots connect slide bar with two or plate electrode connecting rod coordinates.
Further, plate electrode placement plate side is provided with electrode slot, and it is flat for placing that front is provided with rectangular opening formation
The plate electrode placing frame of plate electrode, plate electrode can be rotated with plate electrode placement plate, adjust the angle with central axis, be put down
Plate electrode placement plate can be moved up and down with plate electrode connecting rod, adjust plate electrode at a distance from corona electrode；Plate electrode by
Electrode slot is inserted into plate electrode placing frame, and electrode slot entrance is sealed to fix plate electrode, electrode by rubber weather strip
Being provided with high-voltage conducting wires link slot below slot makes high-voltage conducting wires be fixedly connected with plate electrode.
For overcome the deficiencies in the prior art, it is quiet to additionally provide a kind of nano-fluid that auxiliary electrode focuses for the utility model
Electrospray controllably transports lubricating system with trace amount, using a kind of nano-fluid micro lubricating liquid nozzle.
Further, above-mentioned lubricating system with trace amount further includes：
Grinder bench；
Grinding wheel is set to above Grinder bench, and grinding wheel is set in wheel guard, and wheel guard side can fix nano-fluid conveying
Pipe and compressed gas delivery pipe, wherein nano-fluid delivery pipe is connected to gas-liquid mixed top of chamber, and compressed gas delivery pipe passes through
Gas access is connected to air cavity；
Workpiece powers up component, which is set to Grinder bench workpiece to be processed setting area side.
The workpiece power-up component includes weight and insulation shell, and weight is set in insulation shell and bottom passes through insulation shell
Body is arranged, and weight longitudinal cross-section is T-shaped, and elastic component is arranged between weight and insulation shell, and weight is provided with for penetrating split pin
Trepanning.
In the lubricating system with trace amount, compressed gas is mixed with micro lubricating liquid in gas-liquid mixed intracavitary, and lubricating fluid is in gas
It sprays and is atomized under the impact shear ejector action of stream；The corona discharge device of nozzle lower part and bearing for adjustable high voltage D. C
Pole connects, and the anode of adjustable high voltage D. C connect and is grounded with workpiece power-up component, and workpiece power-up component is attached to workpiece
Not finished surface, formed needle-plate negative corona discharge electric field；Auxiliary electrode (plate electrode or tapered electrode ring) is located at corona zone
Lower section is connect with power converter cathode, and plus earth, power converter is connected with adjustable high voltage D. C, is formed additional
Electric field；Atomized drop is charged under the corona discharge electric field action of nozzle exit to be atomized again, when by auxiliary electrode, due to
Charged droplet is identical as auxiliary electrode polarity, charged droplet by be directed toward central axis additional electrical field force, atomized drop group to
Axis centre collapses transport to grinding area.
Compared with prior art, the utility model has the beneficial effects that：
1) for the utility model by the way that auxiliary electrode-plate electrode or tapered electrode ring is arranged, formation additional electric field can
To improve the stability, mist droplet deposition efficiency and liquid effective rate of utilization of jet stream, and it can effectively control the movement of droplet
Rule reaches ideal cooling and lubricating effect.
2) the utility model by connect slide bar, plate electrode connecting rod setting, can be used for adjust auxiliary electrode voltage,
The parameters such as placement location and appearance and size further adjust intensity and the direction of additional electric field, change the atomization of charged droplet group
Cone shape, the degree of focus for adjusting droplet cluster obtain different depositional areas and shape, are adapted to different grinding operating modes.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is that the micro lubricating grinding system of the first embodiment assembles axonometric drawing；
Fig. 2 is the first embodiment nozzle sectional arrangement drawing I；
Fig. 3 is the first embodiment nozzle sectional arrangement drawing II；
Fig. 4 is outer nozzle wall axonometric drawing；
Fig. 5 is nozzle gas-liquid mixed chamber sectional view；
Fig. 6 (a) is section B-B sectional view in Fig. 5 gas-liquid mixed chambers；
Fig. 6 (b) is the sections D-D oblique sectional view in Fig. 6 (a)；
Fig. 7 (a) is C-C cross-sectional views in Fig. 5 gas-liquid mixed chambers；
Fig. 7 (b) is the sections E-E oblique sectional view in Fig. 7 (a)；
Fig. 8 is electrode tray axonometric drawing and sectional view；
Fig. 9 is L-type electrode needle axonometric drawing and right view；
Figure 10 is the bar axonometric drawing that is slidably connected of the first embodiment；
Figure 11 is the front view and vertical view of positioning bolt；
Figure 12 is the axonometric drawing and right view of the tapered electrode of the first embodiment；
Figure 13 is that workpiece powers up component sectional view；
Figure 14 is ring electrode potential profile；
Figure 15 is the additional electrical field force schematic diagram of conical ring electrode suffered by charged droplets；
Figure 16 is the plate electrode device axonometric drawing drawn game portion enlarged drawing of second of embodiment；
Figure 17 is the angle locating ring front view of second of embodiment；
Figure 18 is the plate electrode placement plate axonometric drawing of second of embodiment；
Figure 19 is the plate electrode connecting rod partial isometric of second of embodiment；
Figure 20 is the droplet movement locus schematic diagram of second of embodiment.
1- Grinder bench, 2- insulation boards, 3- workpiece, 4- grinding wheels, 5- wheel guards, the snakelike pipe fixing device of 6- liquid gas, 7-
Nano-fluid conveys coiled pipe, and 8- compressed gas conveys coiled pipe, 9- power converters, 10- adjustable high voltage D. Cs, 11-
High-voltage conducting wires, 12- workpiece power-up component, 13- auxiliary electrode high-voltage conducting wires, 14- nozzles, 15- gas-liquid mixed chambers, 16- inlets,
17- sealing rings I, 18- positioning bolts, 19- nuts I, 20- connection slide bars, 21- air cavitys I, 22- outer nozzle walls, the needle-shaped electricity of 23-L types
Pole, 24- electrode trays, 25- locating ring screws, 26- bolts, 27- tapered electrode rings, 28- nuts II, 29- locating rings, 30- gas
Chamber II, 31- sealing rings II, 32- stomatas I, 33- stomatas II, 34- positioning screws, the gas accesses 35- I, the gas accesses 36- II,
37- high-tension bus-bars channel, 38- sliding slots, 39- threaded holes I, the upper direct current sections of 40-, 41- accelerating sections, 42- trunnion sections, 43- divergent segments,
Direct current section under 44-, 45- radial electrode needle slots, 46- high-tension bus-bar axial pass troughs, 47- high-tension bus-bar radially through grooves, 48- insulation
Electrode needle guard, 49- discharge electrodes, 50-L type needle electrode wiring holes, 51- through-holes I, 52- high-voltage conducting wires connecting holes, 53- positioning
Bolt connecting hole, 54- tapered electrode connecting holes, 55- sliding blocks, 56- connecting rods, 57- weights, 58- compress permanent magnet, 59- insulation shells
Body, 60- holddown springs, 61- opening latch grooves, 62- conducting wire connection rings, 63- plate electrode connecting rods, 64- plate electrode placement plates,
65- angle locating rings, 66-T shape bolts, 67- nuts III, 68-T type grooves, 69- connecting screws, 70- rubber weather strips, 71- high pressures
Conducting wire link slot, 72- plate electrodes, 73- angle locating ring screws, 74- through-holes II, 75- arc chutes, 76- hexagonal counterbores,
77- through-holes III, 78- threaded holes II, 79- plate electrode placing frames, 80- electrode slots.81- through-holes IV.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Embodiment 1
As background technology is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this Shen
It please propose the nano-fluid electrostatic atomization that a kind of auxiliary electrode focuses and controllably transport lubricating system with trace amount.
In a kind of typical embodiment of the application, as shown in Figure 1, the nano-fluid that a kind of tapered electrode ring focuses is quiet
Electrospray controllably transports lubricating system with trace amount, and in 1 overlying upper insulation plate 2 of Grinder bench, the snakelike pipe fixing device of liquid gas 6 is inhaled
It is attached to 5 side of wheel guard, for fixing nano-fluid conveying coiled pipe 7, compressed gas conveys coiled pipe 8.Nano-fluid conveys
Coiled pipe 7 is connected with inlet 16, and compressed gas conveying coiled pipe 8 is connected with gas access I 35；L in corona discharge assembly
Type needle electrode 23 is connected by high-voltage conducting wires 11 with the cathode of adjustable high voltage D. C 10.Adjustable high voltage D. C 10
Anode powers up component 12 with workpiece by high-tension bus-bar 11 and is connected, and carries out grounding；Workpiece power-up component 12 is adsorbed in work
The not finished surface of part 3, to make workpiece 3 be connected with 10 anode of adjustable high voltage D. C；Power converter 9 connects adjustable high pressure
DC power supply 10, cathode is connected with tapered electrode ring 27 after adjusting output voltage, plus earth processing.Nano-fluid micro lubricating
Liquid with compressed gas mixed aerosol in nozzle 14, boring by the charged secondary-atomizing under the effect of 23 corona discharge of L-type needle electrode
The effect of shape electrode retaining collar 27 is lower to focus controllable transport to the frictional interface between workpiece 3 and grinding wheel 4.
As shown in Figure 2 and Figure 3, the 15 ring wall top shaft shoulder of gas-liquid mixed chamber coordinates with outer nozzle wall 22, is formed with the lower part shaft shoulder
Air cavity I 21 and air cavity II 30 at two；4 through-holes are uniformly provided at the shaft shoulder of top, 22 ring wall of outer nozzle wall is provided with 4 threaded holes I
39, it is connected by positioning screw 34, sealing ring I 17 is housed at the shaft shoulder of top, sealing ring II 31 is housed at the shaft shoulder of lower part, to ensure
Leakproofness between air cavity I 21 and air cavity II 30.Air cavity II 30 is back taper ring-crack ventilation, the outlet of corresponding gas-liquid mixed chamber 15；Gas
15 cavity of liquid mixing chamber is divided into direct current section 40, accelerating sections 41, trunnion section 42, divergent segment 43, lower direct current section 44, upper direct current section 40
Side wall, which corresponds to air cavity I 21 and is provided with 2 rows 4, arranges rotation direction stomata I 32 clockwise, and 42 side wall of trunnion section is provided with 2 rows 4 and arranges rotation direction gas counterclockwise
Hole II 33；Gas-liquid mixed chamber 15 exports lower part and electrode tray 24 is housed, along 8 radial electrode needle slots 45 of its circumference array, L-type
Needle electrode 23 is mounted in radial electrode needle slot 45, and connecting high pressure by the high-tension bus-bar channel 37 on outer nozzle wall 22 leads
Line 11；24 lower part of electrode tray is locating ring 29, and 29 circumference of locating ring is provided with 4 through-holes and passes through outside locating ring screw 25 and nozzle
The connection of wall 22 positions electrode tray 24；22 both sides of outer nozzle wall are provided with sliding slot 38, and both sides 20 lower part of connection slide bar passes through 4
A bolt 26 is fixedly connected with tapered electrode ring 27, the positioning that top is made up of positioning bolt 18 and nut I 19 with nut II 28
Mechanism moves up and down in sliding slot 38, and height adjustment and fixation are carried out to tapered electrode ring 27；27 side of tapered electrode ring is equipped with
High-voltage conducting wires connecting hole 52 is for connecting auxiliary electrode high-voltage conducting wires 13.
As shown in figure 4, there are gas access I 35, gas access II 36 and high-tension bus-bar channel in 22 front of outer nozzle wall respectively
37, both sides are provided with sliding slot 38, coordinate with the sliding block 55 for connecting slide bar 20.
As shown in Fig. 5, Fig. 6, Fig. 7, the stomata I 32 in gas-liquid mixed chamber 15 is distributed clockwise using rotation direction obliquely, with
The angle of central axis is α, and the rotating direction angle in cross section is β, and direction is not intersected with central axis.II 33 rotation direction of stomata is inverse
Hour hands are distributed, and to avoid the velocity-slip of gas-liquid interface, the angle of stomata II 33 and central axis is 90 °, the rotation of cross section
It is γ to angle, direction is not intersected with central axis.Two stomatas are oppositely oriented, increase gas and nano-fluid micro lubricating liquid
Impact and shear action, can effectively solve the problems, such as to be added after nano-particle that drop viscosity is excessive is difficult to be atomized.
As shown in figure 8, electrode tray 24 is made of insulating materials along 8 radial electrode needle slots 45 of its circumference array, L-type
Needle electrode 23 is mounted in radial electrode slot；It is circumferentially provided with high-tension bus-bar axial pass trough 46 in the middle part of 24 section of electrode tray,
Each L-type needle electrode 23 is set to connect；Radially it is provided with high-tension bus-bar radially through groove 47 and the high-tension bus-bar on outer nozzle wall 22
Channel 37 corresponds to and communicates, and each series connection electrode is made to be connect with high-tension bus-bar, and high-tension bus-bar connects with 10 cathode of adjustable high voltage D. C
It connects.
As shown in figure 9, L-type needle electrode 23 includes insulating electrode needle guard 48, discharge electrode 49 and L-type needle electrode wiring
Hole 50, insulating electrode needle guard 48 are interference fitted with radial electrode needle slot 45, and make electrode needle and electrode tray 24 equipped with the shaft shoulder
It realizes that radial positioning, electrode Aculeata are equipped with L-type needle electrode wiring hole 50, is realized in high-tension bus-bar axial pass trough 46 multiple
Electrode needle is connected.
As shown in Figure 10,11, slide bar 20, including sliding block 55 and connecting rod 56 are connected, 56 top of connecting rod is provided with positioning bolt company
Hole 53 is connect, connection slide bar 20 is clamped by positioning bolt 18 and nut I 19 with the positioning of outer nozzle wall 22；56 lower part of connecting rod is provided with cone
Shape electrode connecting hole 54 is fixedly connected with tapered electrode ring 27 by bolt 26；It connects 20 connecting rod 56 of slide bar and drives tapered electrode ring
27 move up and down, and realize and carry out height adjustment and fixation to tapered electrode ring.
As shown in figure 12, tapered electrode ring 27 uses copper electrode thin slice, upside circular ring shape coaxial with nozzle, downside conical ring
Shape, the symmetrical both sides of circular ring electrode piece are respectively provided with 2 through-holes I 51 and are fixedly connected by bolt 26 with slide bar 20 is connect；Circular ring shape
Electrode slice is connected by high-voltage conducting wires connecting hole 52 with 9 cathode of power converter, 9 plus earth of power converter, tapered electrode
Ring 27 forms coupled electric field between L-type needle electrode 23 and workpiece 3, with discharge electric field.Due to charged droplet and auxiliary electricity
Pole polarity is identical, and charged droplet is collapsed to axis centre and transported by the additional electrical field force for being directed toward central axis, atomized drop group
To grinding area.
As shown in figure 13, workpiece power-up component 12 is by weight 57, compresses permanent magnet 58, insulation shell 59, holddown spring 60,
Be open latch groove 61, and conducting wire connection ring 62 forms.By its close to workpiece 3 not finished surface when, compress permanent magnet 58 can and workpiece 3
It generates and attracts force compresses holddown spring 60, while holddown spring 60 provides reaction force, ensure weight 57 and 3 close phase of workpiece
Even.Be provided with split pin slot 61 on weight 57, effect is insertion opening pin, with ensure workpiece power-up component 12 not with workpiece
When 3 absorption, weight 57 and holddown spring 60 will not fall off from insulation shell 59.
As shown in figure 14, to solve ring electrode Potential Distributing, ring electrode is regarded as equipotentiality body, it is assumed that uniform charged is justified
Ring radius is a, and charge line density is λ, and institute's making alive is V0, carried charge Q.The side combined with rectangular co-ordinate using polar coordinates
Therefore formula, only requires to obtain potential in XOZ planes, then entirely by ring electrode symmetry it is found that potential is with Z axis rotational symmetry
The potential in space can be in the hope of.Establish the potential that coordinate system as shown in the figure carries out analysis P points, the potential of conical ring electrode by
Ring electrode principle of stacking is analyzed.
As shown in figure 15, taper hole electrode is about taper hole axisymmetrical in figure to dripping drops additional forces schematic diagram
Two drops fall into focusing electrode after, drop A and B stress is also with regard to axisymmetrical.When charged droplets pass through focusing electrode,
The additional electrical field force F of electrode taper hole axis direction can be directed toward by electrode inner surface by onees, the horizontal component of additional electrical field force
So that drop is gradually converged to central area in dropping process, changes atomization cone shape and reduce depositional area.Additional electrical field force is vertical
Downward component can then increase the falling speed of drop, make drop to center convergence while having enough kinetic energy to pass through grinding area gas
Barrier layer.
Embodiment 2
For example shown in Figure 16 to Figure 20, auxiliary electrode focusing device uses plate electrode device for second of implementation, remaining dress
It sets identical as the first embodiment.
As shown in figure 16, plate electrode device includes plate electrode connecting rod 63, plate electrode placement plate 64, angle locating ring
65 and plate electrode 72, plate electrode 72 is mounted in plate electrode placing frame 79, can be with plate electrode placement plate 64 around connection
Center rotates, and adjusts the angle with central axis；Plate electrode placement plate 64 can be moved up and down with plate electrode connecting rod 63, be adjusted
Plate electrode 72 is at a distance from L-type needle electrode 23.
As shown in figure 17, angle locating ring 65 is along the circumferential direction provided with arc chute 75, passes through T-bolt 66 and nut III
67 are flexibly connected with plate electrode connecting rod 63, are provided with through-hole II 74 and pass through angle locating ring screw 73 with plate electrode placement plate 64
It is fixedly connected；T-bolt 66 slides in arc chute 75, and angle locating ring 65 is marked with graduation mark with angle to adjust tablet
The angle of electrode 72 and central axis.
As shown in figure 18, the coupling part of plate electrode placement plate 64 and plate electrode connecting rod 63 be provided with hexagonal counterbore 76 and
Through-hole III 77, it is hinged by connecting screw 69 and plate electrode connecting rod 63；It is provided with threaded hole with 65 coupling part of angle locating ring
II 78, pass through 73 connection fixed thereto of angle locating ring screw；Side is provided with electrode slot 80, front be provided with rectangular opening formed it is flat
Plate electrode placing frame 79, plate electrode 72 are inserted into electrode placing frame by electrode slot 80, electrode are sealed by rubber weather strip 70
80 entrance of slot, 13 one end of auxiliary electrode high-voltage conducting wires connect 9 cathode of power converter, and one end passes through high-voltage conducting wires link slot 71
It is fixedly connected with plate electrode 72.
As shown in figure 19, plate electrode connecting rod 63 is identical as connection slide bar 20 as 22 coupling part of outer nozzle wall, tablet electricity
Pole connecting rod 63 is clamped by positioning bolt 18 and nut I 19 with the positioning of outer nozzle wall 22；Connecting rod lower through-hole 81 IV and tablet electricity
Pole placement plate 64 is hinged, is provided with T-slot 68 and is flexibly connected with angle locating ring 65 by T-bolt 66.Plate electrode 72 drives
Plate electrode 72 moves up and down, and realizes and carries out height adjustment and fixation to plate electrode.
As shown in figure 20, plate electrode uses copper electrode thin slice, and two pieces of electrodes are symmetrical in nozzle both sides, can be with tablet
Electrode placement plate adjusts the angle with central axis around the rotation of connection center, the two symmetric flat panels electricity after power converter T is adjusted
Pole applies identical negative voltage, generates perpendicular to plate electrode direction electrostatic field, coupled electric field is formed with discharge electric field, to charged liquid
It drops in direction of an electric field and has and return Shu Zuoyong.So after increasing plate electrode, droplet deposition area is by original round S2Become oval
Shape S1, deposition shape and area change.
The specific work process of this programme is as follows：
For the first embodiment, the compressed gas conveying coiled pipe 8 of compressed gas is entered by gas access I 35 and gas
Mouth II 36 respectively enters nozzle air cavity I 21 and air cavity II 30, and nano-fluid micro lubricating liquid passes through nano-fluid and conveys coiled pipe 7
The upper direct current section 40 that inlet 16 enters gas-liquid mixed chamber 15 is connected, compressed gas enters gas-liquid by I 32 rotation direction clockwise of stomata
The upper direct current section 40 of mixing chamber 15 mixes for the first time with nano-fluid micro lubricating liquid, because there are angles with central axis for stomata I 32
α, the rotating direction angle on cross section is β, and airflow direction is non-intersecting with axial centre, and axial centre is right there are a moment of momentum
There are one lateral shears to act on for lubricating fluid, while lubricating fluid being promoted to flow downward；Under the impact of compressed gas and shear action,
Gas-liquid mixture enters accelerating sections 41, and since cavity cross-section becomes smaller, gas-liquid pressure and speed increase；When into trunnion section 42, compression
Gas is entered by II 33 rotation direction counterclockwise of stomata, and the speed of gas-liquid interface is avoided with secondary be mixed into of nano-fluid micro lubricating liquid
Degree sliding, stomata II 33 and axis distribution in 90 °, to increase the contact area of compressed gas and lubricating fluid；Stomata II 33 is in cross
The rotation direction angle in section is γ, and the rotation direction angle beta with stomata I 32 in cross section is oppositely oriented, effect of the lubricating fluid in flip Trim power
It is lower uniformly to be mixed with compressed gas；Gas-liquid mixture enters divergent segment 43 therewith, and the pressure and speed of gas-liquid mixture reduce, and gas is swollen
It bursts and is cleaved into minute bubbles, nano-fluid micro lubricating liquid is under the action of bubbles burst, fluid column rupture dispersion, into lower direct current section
44；After compressed gas enters air cavity II 30 from gas access II 36, fallen by what gas-liquid mixed chamber 15 and outer nozzle wall 22 were formed
Conical circumferential weld damper, recycle stream collide again with gas-liquid mixture, shear and carry gas-liquid mixture jetting nozzle, reach first mist
Change.Nozzle top makes that multiple impacts shearing occurs between gas-liquid using air force, by the ejector action of gas-liquid mixed chamber 15, gas
Impact atomization effect, air bubble expansion atomizing are flowed, the effect of air-flow flip Trim combines, and capacity usage ratio is high, good to obtain
Good atomizing.
The droplet cluster being atomized for the first time is by the corona discharge assembly of the outlet of lower direct current section 44 lower section, wherein electrode tray 24
The L-type needle electrode 23 of clamping respective numbers in radial electrode needle slot 45, high-tension bus-bar 11 is in high-tension bus-bar axial pass trough 46
The each L-type needle electrode 23 of interior series connection, via high-tension bus-bar radially through groove 47 and high-tension bus-bar channel 37 lead to outside nozzle with can
The cathode of high-voltage DC power supply 10 is adjusted to be connected, after powering on, L-type needle electrode 23 and the formation needle-of workpiece 3 are board-like extremely uneven
Electric field forms localized corona when application voltage, which is less than gap breakdown voltage, is more than corona inception voltage in electrode needle tip position
It discharges, the electronics in air generates ionization under the action of extra electric field with gas molecule collision, and cation is born to potential is low
Ghandler motion is dynamic, and anion and electronics are mobile to positive (workpiece plate electrode), in electronics and anion moving process by adhewsive action with receive
Rice corpuscles jet droplets group combines and forms charged droplets, and with the increase of carrying capacity, Surface Tension of Liquid Drops gradually decreases down drop
Rupture, drop obtain secondary-atomizing.
Charged droplets group after secondary-atomizing is to 3 displacement of workpiece, by tapered electrode ring 27.Tapered electrode ring 27 is logical
It crosses high pressure wire connection hole 52 with 9 cathode of power converter to be connected, 9 plus earth of power converter.After adjustment access voltage, position
27 interannular of tapered electrode ring between L-type needle electrode 23 and workpiece 3 forms electrostatic field, is coupled with the formation of corona discharge electric field
Electric field.Since tapered electrode ring 27 is identical as charged droplets electrification polarity, interannular electric field has direction central axis to charged droplets
Additional electrical field force, by the symmetry of ring electrode electric field it is found that the electric field force close to 27 inner wall of tapered electrode ring is maximum, Xiang Zhong
Mandrel line is gradually reduced, and the charged droplet dissipated on the outside can change movement locus towards axis direction convergence, and denounce in coulomb
Will not and it gather under force effect.It all rises charged droplets to the effect for returning beam and traction, charged efficiency is made to increase, charged droplets utilize
Rate controllable rate increases, and the more uniform and stable concentration of nano-fluid spraying is sprayed at the effective of grinding area to improve nano-fluid
Deposition.Further by parameters such as voltage, the placement locations of adjusting taper electrode retaining collar 27, intensity and the side of additional electric field are adjusted
To changing the atomization cone shape of charged droplet group, the degree of focus for adjusting droplet group obtains different depositional areas and shape, can be with
Different grinding operating modes is adapted to, ideal cooling and lubricating effect is reached.
In severe non-uniform electric field, when air-gap voltage is less than breakdown voltage, i.e., air gap it is completely breakdown before, in curvature half
The small surrounding them of diameter can see lazuline halation and with sound, at this moment can detect pulse current from external circuit,
This phenomenon is called corona discharge.During the two poles of the earth potential difference gradually increases, the curent change between air gap meets ohm from initially
For law to non-self-maintained discharge, electric current is very faint, and air keeps good insulating properties, when voltage increases to certain numerical value VsWhen,
Electrode current increases suddenly, shelf depreciation occurs in the small pole of radius of curvature, this voltage is called discharge inception voltage, and corona occurs
After electric discharge, continue to increase voltage, corona layer is gradually expanded, flame path occurs and extend to another electrode, lead to entire air gap
Breakdown, switchs to spark discharge or arc discharge, this voltage becomes breakdown voltage.The degree of irregularity of electric field is bigger, bloom electricity
It presses smaller.And the board-like bubble-discharge of needle-has apparent polar effect, under DC voltage effect, when stylus is negative polarity
Breakdown voltage it is high when than needle plate being positive polarity, and discharge inception voltage is slightly lower, so select negative corona discharge.
Starting corona field strength calculation formula be：
In formula：E0--- the spark field strength in uniform electric field when aerial discharge gap is 1cm under standard state is worth and is
3100kv/m；
M --- coefficient related with discharge electrode surface state, (0.6<m<1)；
K --- coefficient is worth for K=3.08 × 10-2；
δ --- relative air density, in normal conditions, value 1；Under other conditions, value 0.00294P/T；
P --- atmospheric pressure, Pa；
T --- absolute temperature, K；
R --- corona electrode discharge end radius, m.
The calculation formula of discharge inception voltage is：
Vs=Es(r/2)ln[(r+2d)/r] (2)
Operating mode is processed for grinding machine, takes the tip radius 0.5mm of L-type needle electrode 23, interpolar is away from for 20-30cm.If electric
Pole surface is smooth, calculates to obtain discharge inception voltage ranging from 15.28-16.20KV according to formula (2) in normal conditions.
Charged droplet atomization mechanism：
Electrostatic atomization is that electrostatic force overcomes surface tension of liquid, so as to cause liquid crushing be mist droplet the phenomenon that.When
When negative polarity corona discharge occurs for the tip of L-type needle electrode 23, a large amount of ion, cation can be being generated in corona zone
Can be mobile to electrode cathode and occur electrically to neutralize, and anion and the electrons Ghandler motion that faces south are dynamic, into drift region, in drift region
It with droplet collision, is attached on drop, drop is made to become charge carrier, taken charge identical with polarity of electrode.
The carrying capacity calculation formula of droplet corona charging is as follows：
In formula (3)
Q --- droplet carrying capacity, C；
K --- droplet dielectric constant；
ε0--- dielectric constant of air, about 8.85 × 10-12, c2/n·m2；
The electric field strength that E --- corona discharge is formed, V/m；
rd--- droplet radius, μm；
N --- charged ions concentration, population/m2；
E --- electron charge, 1.6 × 10-19, C；
Ki --- charged ions mobility, m2/(V·s)；
T --- charging residence time, s.
Since corona discharge acts on, droplet surface carries a large amount of same sex charge, increases liquid surface activity, makes surface layer
Molecule generation significantly aligns, and reduces surface tension.In the case where droplet size is constant, as quantities of charge increases
Add, surface tension can be gradually reduced.When carrying capacity increases to certain numerical value, and the size of surface tension is not enough to constraint liquid,
Charged droplet will be broken for fine mist.Carrying capacity at this time is known as Rayleigh limit Qr=8 π (σ ε rd 3)1/2, in formula, σ is liquid
The intrinsic surface tension of body, rdFor initial liquid drop radius, ε is surrounding air dielectric constant.
Have higher relative velocity in present case between drop and the gas of surrounding, thus not there is only electrostatic force there is also compared with
High Pneumatic pressure, the division of drop are controlled by Pneumatic pressure, surface tension and viscous force.For the lower liquid of viscosity
Body, the broken of drop are mainly determined by Pneumatic pressure and surface tension.Pneumatic pressure suffered by big drop is 0.5 ρgΔV2, wherein
ρgIt is gas density, Δ V is gas-liquid relative velocity.However, the cohesive force that surface tension generates will hinder drop to deform brokenly
Broken, cohesive force can be expressed as 4 σ/D, and D is liquid-drop diameter.When Pneumatic pressure is more than drop cohesive force, the unstable rupture of drop
Generate droplet；Liquid-drop diameter reduces, and cohesive force increases, and both tensile stresses caused by instructing cohesive force and Pneumatic pressure balance
When, drop keeps stabilization no longer to rupture once again.A dimensionless number Weber number is incorporated hereinAccording to acting on
Both the cohesive force that the tensile stress and surface tension that aerodynamic force on drop generates generate balance principle, obtains critical Weber Number：
When Weber number We is more than critical Weber Number We to known tocritWhen, drop force unbalance deforms.In addition
Maximum steady state liquid-drop diameter corresponding with Δ V can be found out according to (4)：
Under the action of coulomb charged droplet is in Coulomb repulsion, surface tension dies down charged droplet, by conservation of energy virtual work
Principle show that the surface tension value after dying down is：
Wherein r is droplet radius, and q is the carrying capacity of drop, and ε is surrounding air dielectric constant.Obviously may be used from formula
Go out when carried charge q increases, surface tension just declines, and helps to be atomized it can thus be appreciated that droplet surface is charged.
The We ' of charged droplet can be expressed as at this time：
The limit of carrying capacity is at this timeIt is at this time it can be seen that smaller than Rayleigh limit,
The carrying capacity that this can also explain in most cases charged droplet is usually smaller than Rayleigh limit, because not done in actual condition
Method avoids air-flow poor with flow stream velocity.
For the larger liquid of viscosity, viscous force is very important, introduces parameter Ang Sege numbers：
Re in formula --- it is Reynolds number, expression formula is Re=ρlVD/μl, characterize sticky criterion；
μl--- hydrodynamic viscosity, Pas.
The critical Weber Number of viscous liquid is：
Wecrit=Wecrit[1+f(Oh)] (9)
By (7) as it can be seen that in high-speed flow charged droplet broken and gas-liquid relative velocity, gas-liquid physical parameter and charging
There is close relationship in field.In addition, if drop reaches stable state in the gas flow, on lotus after electrostatic, We numbers increase, liquid surface
Tension reduces, and is insufficiently resistant to Pneumatic pressure, drop will further be deformed, is crushed, so in the identical feelings of gas-liquid parameter
Under condition, stablize mist droplet particle size smaller on lotus after electrostatic.This has just achieved the purpose that refine droplets particles, while droplet surface is identical
Charge, it is ensured that the distribution of drop is more uniform.By formula (9) it is found that viscous liquid due to viscous force effect, it is critical
Weber number is larger, is atomized relative difficult, and mist droplet particle size is larger, and design and the corona charging effect of gas-liquid mixed chamber 15 can be preferable
Strengthen atomizing.
Auxiliary electrode focusing principle：
The surface of tapered electrode ring 27 or plate electrode 72 is smooth, and curvature is big, is not likely to produce corona discharge phenomenon, passes through work(
Rate converter 9 adjusts output voltage, by auxiliary electrode etc. is all the uniform negative electrical charge in surface when analyzing electric field strength, electrode surface electricity
Gesture is minimum, close higher and higher to axis, is moved to high potential since charged droplets are negatively charged, thus the stress side of charged droplets
It is directed toward central axis to by electrode surface.
As shown in Figure 14 ring electrode potential profiles, using rectangular coordinate system and polar relationship, by uniform charged ring
The set for regarding a charge as regards ring electrode as equipotentiality body, it is assumed that uniformly charged rings to solve ring electrode Potential Distributing
Radius is a, and charge line density is λ, and institute's making alive is V0, carried charge Q.The mode combined with rectangular co-ordinate using polar coordinates,
In ring electrode induc- tion charging, by symmetry it is found that potential is with Z axis rotational symmetry, therefore, only require in XOZ planes
Potential, then the potential in entire space can be in the hope of.It establishes coordinate system as shown in the figure to be analyzed, the potential of conical ring electrode
It is analyzed by ring electrode principle of stacking.
The potential that then uniform charged ring is generated in P points is：
K is the full ellptic integral of the first kind, mould k：
It can analyze to obtain by formula (10) (11) (12), potential, that is, coordinate of planar central axis is where electrode retaining collarWhen, potentialElectrode ring surfaces, that is, coordinate isPotential beBy
Formula (12) is it is found that K (1) > π, and due to the added negative voltage on annular electrode, Q is negative value, so Vp2< Vp1, tapered electrode ring
27 Potential Distributing is by principle of stacking it is found that potential lines in central axis by being directed toward electrode surface, and the droplet of bear electricity is along potential
Line negative direction moves, i.e., charged droplet is by the power for being directed toward central axis.Charged droplets Impact direction in ring is as shown in figure 15.Figure
In be force analysis figure when being fallen into after tapered electrode ring 27 in certain position about symmetrical two drops of central axis, drop
A and B stress is symmetric about the axis.It can be seen that, can be by one by table in electrode when charged droplets are by tapered electrode ring 27
The additional electrical field force F of the direction central axial direction in facees.The horizontal component of additional electrical field force make drop dropping process gradually to
Central area is converged, and is changed atomization cone shape and is reduced depositional area.The component of additional electrical field force straight down can then increase drop
Falling speed, make drop to center convergence and meanwhile have enough kinetic energy pass through grinding area airbond layer.
Plate electrode principle is as shown in the droplet movement locus of Figure 20, with tapered electrode ring analogy.By two pieces of same equipotentials
Plate electrode 72 etc. be all the electrode with charge equivalence of the same race, can by the distribution of the electric field space of two isocenter charges of the same race
Know, field strength is gradually decrease to zero from charge to midpoint field strength, therefore nearby field strength is maximum for plate electrode 72, close to two charges two
Direction of an electric field between a plate electrode is directed toward central axis perpendicular to plate electrode, and plate electrode edge effect is relative to vertical flat plate electrode
Electric field very little between the plate in direction, therefore the parallel direction of plate electrode can be ignored to drop by force effect.
So plate electrode 72 only generates additional electrical field force, charged droplets to charged droplets in 72 direction of vertical flat plate electrode
Movement locus changes, if figure charged droplets depositional area is by original round S2Become oval S1, elliptical minor axis length
With the voltage applied on plate electrode 72, with the angle of central axis and with the distance dependent of corona electrode, on plate electrode 72
Application voltage is bigger, and smaller with central axis angle, additional electrical field force is bigger, about small at a distance from corona electrode, elliptical short
Axis is shorter, and the depositional area of droplet is smaller, and focusing effect is more apparent.It adjusts plate electrode height, angle and applies voltage to adjust
Depositional area ellipse minor axis length is saved, to achieve the purpose that improve the effective depositional area in grinding area.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of nano-fluid micro lubricating liquid nozzle, which is characterized in that including：
Inside is provided with the internals of gas-liquid mixed chamber；
Outer nozzle wall is placed on outside internals, and air cavity is formed between internals and outer nozzle wall, outer nozzle wall end and gas-liquid mixed
Chamber communicates, which is provided with groove so that corona discharge device is arranged, and internals are provided with stomata so that air cavity is communicated with gas-liquid mixed chamber；
Auxiliary electrode component, including be connected with outer nozzle wall and relative to outer nozzle wall electricity moving up and down by connecting slide bar
Polar ring, and/or set on the plate electrode of nozzle both sides adjustable angle, auxiliary electrode component is set to below corona discharge device.
2. a kind of nano-fluid micro lubricating liquid nozzle according to claim 1, which is characterized in that the air cavity along
The axis direction of internals is equipped at two, and the outer nozzle wall is provided with the gas access communicated with air cavity；
Further, the air cavity close to corona discharge device setting is inversed cone ring slit, and another air cavity is annular.
3. a kind of nano-fluid micro lubricating liquid nozzle according to claim 1, which is characterized in that the corona discharge
Component includes electrode, and electrode is L-type needle electrode, and electrode is along the circumferential direction equipped with multiple, which is set to by electrode tray
In outer nozzle wall end recesses；
Further, electrode tray is along the circumferential direction provided with the radial electrode needle slot for fixing electrode；
Further, the locating ring for fixing electrode tray is arranged in groove end side.
4. a kind of nano-fluid micro lubricating liquid nozzle according to claim 1, which is characterized in that the gas-liquid mixed
Chamber passes through as upper direct current section, accelerating sections, trunnion section and divergent segment, straight under the divergent segment end set
Section is flowed, upper direct current section, trunnion section and lower direct current section are cylinder, and accelerating sections is rounding stage body, and divergent segment is round estrade；
Further, direct current section is provided with rotation direction stomata I clockwise in internals, and internals trunnion section is provided with rotation direction stomata II counterclockwise.
5. a kind of nano-fluid micro lubricating liquid nozzle according to claim 1, which is characterized in that described internals one end
The shaft shoulder is arranged in portion, and the shaft shoulder is connected with outer nozzle wall；
Further, prominent outer nozzle wall setting at the top of internals.
6. a kind of nano-fluid micro lubricating liquid nozzle according to claim 1, which is characterized in that the electrode retaining collar is
Tapered electrode ring, the electrode retaining collar have setpoint distance apart from internals electrode；
Further, sliding slot is arranged in the outer nozzle wall both sides, and positioning bolt is arranged in sliding slot, and the connection slide bar includes connecting
Bar, connecting rod top are connect with positioning bolt, sliding block of the connecting rod side setting in sliding slot.
7. a kind of nano-fluid micro lubricating liquid nozzle according to claim 6, which is characterized in that the plate electrode
Set on plate electrode placement plate, plate electrode placement plate is set to plate electrode connecting rod bottom and can be revolved relative to plate electrode connecting rod
Turn setting, plate electrode connecting rod moves up and down in the sliding slot of outer nozzle wall, in plate electrode connecting rod and plate electrode connecting plate
Side is respectively provided with angle locating ring, and angle locating ring is provided with arc chute, and plate electrode connecting rod side is arranged in arc chute
The T-bolt of sliding；
Further, plate electrode placement plate side is provided with electrode slot, and front is provided with rectangular opening and is formed for placing tablet electricity
The plate electrode placing frame of pole.
8. the nano-fluid electrostatic atomization that a kind of auxiliary electrode focuses controllably transports lubricating system with trace amount, which is characterized in that use
A kind of nano-fluid micro lubricating liquid nozzle according to any one of claim 1-7.
9. the nano-fluid electrostatic atomization that a kind of auxiliary electrode according to claim 8 focuses controllably transports micro lubricating system
System, which is characterized in that further include：
Grinder bench；
Grinding wheel, be set to Grinder bench above, grinding wheel be set to wheel guard in, wheel guard side can fix nano-fluid delivery pipe with
Compressed gas delivery pipe, wherein nano-fluid delivery pipe is connected to gas-liquid mixed top of chamber, and compressed gas delivery pipe passes through gas
Entrance is connected to air cavity；
Workpiece powers up component, which is set to Grinder bench workpiece to be processed setting area side.
10. the nano-fluid electrostatic atomization that a kind of auxiliary electrode according to claim 9 focuses controllably transports micro lubricating
System, which is characterized in that the workpiece power-up component includes weight and insulation shell, and weight is set in insulation shell and bottom is worn
Insulation shell setting is crossed, weight longitudinal cross-section is T-shaped, and elastic component is arranged between weight and insulation shell, and weight is provided with for wearing
Enter the trepanning of split pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113263434A (en) * | 2021-06-08 | 2021-08-17 | 浙江工业大学 | Polishing device using linear hydraulic pressure |
| CN113263434B (en) * | 2021-06-08 | 2024-05-17 | 浙江工业大学 | Polishing device utilizing linear hydrodynamic pressure |
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