CN209615205U - A kind of electrostatic atomiser and controllable jet micro lubricating grinding system - Google Patents

Abstract

Present disclose provides a kind of electrostatic atomiser and controllable jet micro lubricating grinding systems.Wherein, a kind of electrostatic atomiser, including nozzle core are connected with top nozzle body above the nozzle core；Free space is formed between the top nozzle body and nozzle core, is used to storing compressed air and decompression；Lower nozzle body is connected with below the nozzle core；Gas-liquid mixed room, accelerating chamber and jet expansion are disposed with inside nozzle core from top to bottom；Micro-bulge is uniformly placed in the acceleration chamber interior walls.

Description

A kind of electrostatic atomiser and controllable jet micro lubricating grinding system

Technical field

The disclosure, which belongs to, is ground liquid supplying device field more particularly to a kind of electrostatic atomiser and controllable jet in machining Micro lubricating grinding system.

Background technique

Only there is provided background technical informations relevant to the disclosure for the statement of this part, it is not necessary to so constitute first skill Art.

Minimal Quantity Lubrication Technology is also known as MQL (Minimal Quantity Lubrication) technology, specifically by denier Grinding fluid with certain pressure compressed air mixed aerosol after injection to grinding area, to abrasive dust, grinding wheel and finished surface Carry out effectively lubricating.This technology reduces making for grinding fluid under the premise of guaranteeing effectively lubricating and cooling effect to greatest extent With (some thousandths of of about traditional cast-type lubricating system dosage), and then reduce production cost and to the pollution of environment and right The injury of human body.

Nanometer jet stream micro lubricating is established based on enhanced heat exchange theory, by enhanced heat exchange theory it is found that the biography of solid Thermal energy power is much larger than liquids and gases.The thermal coefficient of solid material several orders of magnitude bigger than fluent material under room temperature.Micro- Solids are added in amount lubricant medium, the thermal coefficient of fluid media (medium) can be dramatically increased, improve heat convection ability, greatly more Mend the insufficient defect of micro lubricating cooling capacity.In addition, nanoparticle also have in terms of lubrication is with tribology it is special wear-resistant The tribological properties such as antifriction and high bearing capacity.Nanometer jet stream micro lubricating is exactly that micro lubricating is added in nanoscale solids particle Nano-fluid is made in fluid media (medium), i.e., after nanoparticle, lubricant (oil or oil water mixture) and high pressure gas mixed aerosol Grinding area is sprayed into pattern.

Drop caused by nano-fluid Minimal Quantity Lubrication Technology enters grinding area in turn by the rolling action of high pressure gas Play the role of cooling and lubricating, however its motion path and uncontrollable, the problems such as there are drop diffusions, drift.Drop drifts Environment is not only polluted in working environment and also threatens the health of operator, while also reducing the effective use of grinding fluid Rate causes the waste of resource.Lubricating fluid and coolant liquid are to the shadow of operator's health when nowadays using Minimal quantity of lubrication oil Sound is just paid high attention to, and such as: operator can obtain various respiratory diseases, including occupational asthma, anaphylaxis lung Scorching, lung function loses and skin disease such as allergy, oily acne and cutaneum carcinoma etc..Pass through for this realistic problem researcher big The exploration work of amount proposes electrostatic atomization micro lubricating, it is desirable to controllably be transported by the effect of electric field force to atomized drop realization Atomizing effect is further increased simultaneously.

Application No. is 201310042095.9 patents to disclose a kind of micro profit of nano-fluid electrostatic atomization controllable jet Sliding grinding system, the program is charged using micro lubricating liquid progress of the corona charging technology to nozzle exit, in high voltage electric field Under the action of drop can further occurrence it is broken, the broken droplet formed along electric field line direction it is controllable be transported to grinding area, To carry out effective cooling and lubricating to grinding area.Application No. is 201310050221.5 patents to disclose a kind of cutting fluid gas Mist micro lubricating method, the program also use principle of corona discharge and lubricating fluid are crushed and are transported.

Inventors have found that being lubricated for field of machining using electrostatic atomization from the point of view of presently disclosed document Technology and few, and technology is also not yet mature.Corona discharge (electrode needle is mostly used currently for charged transport of lubricating oil Point discharge) mode, but corona discharge there is corona zones small, the problem of chargeability difference, while improving using voltage Cause the waste of the energy.It can effectively improve the lotus of lubricating fluid using contact charged (high voltage power supply is directly contacted with nozzle) Electricity, but there is also leakage risks, do not occur the micro lubricating equipment for being suitble to contact charged currently on the market.It turns out that When charged using contact, it is drawn under the external forces such as compressed air, electric field force in nozzle exit micro lubricating liquid A series of small fluid columns are broken into droplet in turn.Fluid column diameter is extremely uneven in this course, leads to the small liquid being subsequently formed It is more dispersed to drip particle diameter distribution, is unfavorable for the controllable of size droplet diameter.The small fluid column of nozzle exit is formed in compressed air simultaneously The lower fluctuation of sinuous flow effect it is more serious, be extremely unfavorable for the control of drop subsequent delivery route.

In addition to the above-mentioned problems, inventor also found, since compressed air pressure is larger, has noise when spraying from nozzle, makes an uproar Sound will affect operator's hearing health；And it finds using in micro lubricating grinding system due to nanoparticle absorption property It is relatively strong, the case where pipeline of nano-fluid often blocks is conveyed, this leverages its service performance and electrostatic atomization Lubricating system with trace amount urgent problem to be solved.

Utility model content

The first aspect of the disclosure provides a kind of micro- texture electrostatic atomiser, is accelerating indoor side surface setting a series of Micro-bulge considerably increases the oleophylic performance for accelerating chamber internal surface.

A kind of technical solution of micro- texture electrostatic atomiser of the first aspect of the disclosure are as follows:

A kind of micro- texture electrostatic atomiser, comprising: nozzle core is connected with top nozzle body above the nozzle core；On described Free space is formed between nozzle body and nozzle core, is used to storing compressed air and decompression；It is connected with below the nozzle core Lower nozzle body；Gas-liquid mixed room, accelerating chamber and jet expansion are disposed with inside nozzle core from top to bottom；In the accelerating chamber Micro-bulge is uniformly placed on wall.

The second aspect of the disclosure provides a kind of compound micro- texture electrostatic atomiser of second level, and indoor side surface is being accelerated to set A series of micro-bulges are set, micro-bulge is that second level composite construction is made of level-one micro-bulge and second level micro-bulge, compared to individual Micro-bulge structure composite micro-bulge undoubtedly can larger increase the oleophylic performance of fast chamber internal surface.

A kind of technical solution of the compound micro- texture electrostatic atomiser of second level of the second aspect of the disclosure are as follows:

A kind of compound micro- texture electrostatic atomiser of second level, comprising: nozzle core is connected with top nozzle above the nozzle core Body；Free space is formed between the top nozzle body and nozzle core, is used to storing compressed air and decompression；Under the nozzle core Side is connected with lower nozzle body；Gas-liquid mixed room, accelerating chamber and jet expansion are disposed with inside nozzle core from top to bottom；It is described Accelerate uniformly to be placed with micro-bulge in chamber interior walls, the micro-bulge is made of level-one micro-bulge and second level micro-bulge, second level dimpling Body is arranged on level-one micro-bulge.

The third aspect of the disclosure provides a kind of noise reduction increasing resistance electrostatic atomiser, is accelerating indoor side surface that a system is arranged Column pricker bar shape micro-bulge, the pricker bar groove formed between pricker bar shape micro-bulge can effectively reduce noise, reduce to operation The harm of personnel's hearing health；Accelerate indoor side surface setting a series of micro-bulges also significantly increase nozzle core with it is micro The contact area of lubricating fluid.

A kind of noise reduction of the third aspect of the disclosure increases the technical solution of resistance electrostatic atomiser are as follows:

A kind of noise reduction increases resistance electrostatic atomiser, comprising: nozzle core is connected with top nozzle body above the nozzle core；It is described Free space is formed between top nozzle body and nozzle core, is used to storing compressed air and decompression；The lower section of the nozzle core connects There is lower nozzle body；Gas-liquid mixed room, accelerating chamber and jet expansion are disposed with inside nozzle core from top to bottom；The accelerating chamber Micro-bulge is uniformly placed on inner wall, the micro-bulge is pricker bar shape, and it is recessed to form pricker bar between any two pricker bar shape micro-bulge Slot.

The fourth aspect of the disclosure provides a kind of gradual change asperity contact formula electrostatic atomiser, is accelerating indoor side surface A series of non-contour micro-bulge of transition types is set, micro lubricating liquid can be made indoor in acceleration using transition type micro-bulge structure The resistance of motion is greatly reduced simultaneously to small distribution, facilitating to form uniform oil film under the effect of pullling of compressed air greatly The disturbance of jet stream improves the uniformity of liquid film liquidus, so that finally formed droplet distribution is also more uniform, movement Path is also more controllable.

A kind of technical solution of gradual change asperity contact formula electrostatic atomiser of the fourth aspect of the disclosure are as follows:

A kind of gradual change asperity contact formula electrostatic atomiser, comprising: nozzle core is connected with top nozzle above the nozzle core Body；Free space is formed between the top nozzle body and nozzle core, is used to storing compressed air and decompression；Under the nozzle core Side is connected with lower nozzle body；Gas-liquid mixed room, accelerating chamber and jet expansion are disposed with inside nozzle core from top to bottom；It is described Accelerate uniformly to be placed with micro-bulge in chamber interior walls, the micro-bulge uses the non-contour structure of transition type, i.e. micro-bulge height edge is penetrated The stream direction of motion is gradually reduced.

5th aspect of the disclosure provides a kind of controllable jet micro lubricating grinding system, and it includes electrostatic atomiser uses Electrostatic atomiser carries out lubricating fluid charged, realizes and the uniform of chargeability and drop can be improved while droplet realizes controlled distribution Degree.

A kind of technical solution of controllable jet micro lubricating grinding system of 5th aspect of the disclosure are as follows:

In one or more embodiments, a kind of controllable jet micro lubricating grinding system micro- is knitted including described above Structure electrostatic atomiser.

In one or more embodiments, a kind of controllable jet micro lubricating grinding system, including second level described above Compound micro- texture electrostatic atomiser.

In one or more embodiments, a kind of controllable jet micro lubricating grinding system, including noise reduction described above Increase resistance electrostatic atomiser.

In one or more embodiments, a kind of controllable jet micro lubricating grinding system, including above-mentioned gradual change micro-bulge Contact-type electrostatic nozzle.

The beneficial effect of the disclosure is:

(1) a kind of micro- texture electrostatic atomiser of the disclosure is accelerating indoor side surface that a series of micro-bulges are arranged, is increasing greatly The oleophylic performance of chamber internal surface is accelerated.Accelerate the oleophylic performance of chamber internal surface that can effectively adsorb to flow out out of mixing chamber Micro lubricating liquid improves the resistance of motion of micro lubricating liquid, and forms uniform oil film under the effect of pullling of compressed air, greatly The disturbance for reducing jet stream greatly improves the uniformity of liquid film liquidus, so that finally formed droplet distribution is also more equal Even, motion path is also more controllable；A series of micro-bulges of indoor side surface setting are accelerated also to significantly increase nozzle core With the contact area of micro lubricating liquid, due to its preferably it is lipophilic also considerably increase that micro lubricating liquid is in contact with it when Between, therefore there is more preferably charging performance.

(2) the compound micro- texture electrostatic atomiser of a kind of second level of the disclosure accelerates indoor side surface that a series of micro-bulges are arranged, Micro-bulge is that second level composite construction is made of level-one micro-bulge and second level micro-bulge, micro- compared to individual micro-bulge structure composite Convex body undoubtedly can larger increase the oleophylic performance of fast chamber internal surface.Accelerate chamber internal surface oleophylic performance can effectively adsorb from The micro lubricating liquid flowed out in mixing chamber, improves the resistance of motion of micro lubricating liquid, and pullling under effect in compressed air Uniform oil film is formed, the disturbance for greatly reducing jet stream improves the uniformity of liquid film liquidus, so that finally formed liquid Drop distribution is also more uniform, and motion path is also more controllable；Accelerate a series of compound dimpling of second levels of indoor side surface setting Body also significantly increases the contact area of nozzle core Yu micro lubricating liquid, due to its preferably it is lipophilic also considerably increase it is micro- The time that amount lubricating fluid is in contact with it, therefore there is more preferably charging performance.

(3) a kind of noise reduction of the disclosure increases resistance electrostatic atomiser, is accelerating indoor side surface that a series of pricker bar shape dimplings are arranged Body considerably increases the oleophylic performance for accelerating chamber internal surface.Accelerating the oleophylic performance of chamber internal surface can effectively adsorb from mixing The micro lubricating liquid of indoor outflow improves the resistance of motion of micro lubricating liquid, and is formed under the effect of pullling of compressed air Uniform oil film, the disturbance for greatly reducing jet stream improve the uniformity of liquid film liquidus, so that finally formed drop point Cloth is also more uniform, and motion path is also more controllable.Meanwhile the pricker bar groove formed between pricker bar shape micro-bulge can be effective Reduction noise, reduce the harm to operator's hearing health；Accelerate a series of micro-bulges of indoor side surface setting The contact area of nozzle core Yu micro lubricating liquid is significantly increased, also considerably increases micro profit since it is preferably lipophilic The time that synovia is in contact with it, therefore there is more preferably charging performance.

(4) a kind of gradual change asperity contact formula electrostatic atomiser of the disclosure is accelerating indoor side surface that a series of mistakes are arranged Cross the non-contour micro-bulge of formula, using transition type micro-bulge structure can make micro lubricating liquid accelerate the indoor resistance of motion from big To small distribution, help to form uniform oil film under the effect of pullling of compressed air, while the disturbance for greatly reducing jet stream mentions The high uniformity of liquid film liquidus, so that finally formed droplet distribution is also more uniform, motion path also more may be used Control；A series of micro-bulges of indoor side surface setting are accelerated also to significantly increase the contact surface of nozzle core Yu micro lubricating liquid Product has more preferably since preferably lipophilicity also considerably increases the time that micro lubricating liquid is in contact with it for it Charging performance.

(5) a kind of controllable jet micro lubricating grinding system of the disclosure is considerably increased micro- using above-mentioned electrostatic atomiser The time that amount lubricating fluid is in contact with it；And hydrophobic oleophobic carbon nano coating is coated on the inside of insulated oil tube, due in nanometer The surface of size indentation can be such that the gas molecule of absorption is stabilized, so being equivalent to one layer of stable gas in macro surface Body thin film contact oil and water can not with material surface directly, so that material surface, which is presented, extraordinary double dredges that (oleophobic is thin Water) characteristic, therefore can effectively avoid the problem that oil pipe blocking.

Detailed description of the invention

The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.

Fig. 1 (a) is the cylindrical type nozzle that the embodiment of the present disclosure provides；

Fig. 1 (b) is the conic nozzle that the embodiment of the present disclosure provides；

Fig. 1 (c) is the cone column type nozzle that the embodiment of the present disclosure provides；

Fig. 1 (d) is the cone column divergent channel that the embodiment of the present disclosure provides；

Fig. 2 is the electrostatic atomiser general assembly cross-sectional view that the embodiment of the present disclosure provides；

Fig. 3 is the nozzle rotation direction venthole cross-sectional view that the embodiment of the present disclosure provides；

Fig. 4 is the mixing chamber closure construction schematic diagram that the embodiment of the present disclosure provides；

Fig. 5 (a) is that micro- texture distribution is unfolded in the acceleration chamber internal surface for micro- texture electrostatic atomiser that the embodiment of the present disclosure provides Schematic diagram；

Fig. 5 (b) is that micro- texture distribution is unfolded in the acceleration chamber internal surface for micro- texture electrostatic atomiser that the embodiment of the present disclosure provides Schematic diagram；

Fig. 6 is that micro- texture unit area is unfolded in the acceleration chamber internal surface for micro- texture electrostatic atomiser that the embodiment of the present disclosure provides Structural schematic diagram；

Fig. 7 (a) is that the acceleration chamber internal surface expansion for the compound micro- texture electrostatic atomiser of second level that the embodiment of the present disclosure provides is micro- Texture distribution schematic diagram；

Fig. 7 (b) is that the acceleration chamber internal surface expansion for the compound micro- texture electrostatic atomiser of second level that the embodiment of the present disclosure provides is micro- Texture distribution schematic diagram；

Fig. 8 (a) is the micro- texture point of acceleration chamber internal surface expansion that the noise reduction that the embodiment of the present disclosure provides increases resistance electrostatic atomiser Cloth schematic diagram；

Fig. 8 (b) is the micro- texture point of acceleration chamber internal surface expansion that the noise reduction that the embodiment of the present disclosure provides increases resistance electrostatic atomiser Cloth schematic diagram；

Fig. 9 (a) is the acceleration chamber internal surface expansion for the gradual change asperity contact formula electrostatic atomiser that the embodiment of the present disclosure provides Micro- texture distribution schematic diagram；

Fig. 9 (b) is the acceleration chamber internal surface expansion for the gradual change asperity contact formula electrostatic atomiser that the embodiment of the present disclosure provides Micro- texture distribution schematic diagram；

Figure 10 is that the acceleration chamber internal surface expansion for the gradual change asperity contact formula electrostatic atomiser that the embodiment of the present disclosure provides is micro- Texture unit area structural schematic diagram；

Figure 11 is the controllable jet micro lubricating grinding system axonometric schematic diagram that the embodiment of the present disclosure provides；

Figure 12 is the controllable jet micro lubricating grinding system perspective view of the explosion that the embodiment of the present disclosure provides；

Figure 13 is the micro lubricating liquid delivery pipe cross-sectional view that the embodiment of the present disclosure provides；

Figure 14 is the adjustable high voltage D. C circuit decorum block diagram that the embodiment of the present disclosure provides；

Figure 15 (a) is the workpiece power-up device cross-sectional view that the embodiment of the present disclosure provides；

Figure 15 (b) is the workpiece power-up device top view that the embodiment of the present disclosure provides.

Wherein, 1- grinding machine part workbench, 2- insulating sheet material, 3- workpiece, 4- grinding wheel, 5- wheel guard, 6- magnetic suction disc, 7- Micro lubricating liquid delivery pipe, 8- high direct voltage electric wire, 9- adjustable high voltage D. C, 10- electrostatic atomiser, 11- cabinet, 12- are exhausted Edge lubricating cup connector, 13- insulation lubricating cup, 14- insulating fixing bolt, 15- insulating washer, 16- insulation connection bolt, 17- micro pump Fixed plate, 18- precision micro-lubricating pump, 19- throughput adjusting knob, 20- insulation threeway, 21- solenoid valve, 22- filter pressure regulation Valve, 23- gas source connector, 24- bidirectional joint, 25- impulse controller, 26- tracheae I, 27- tracheae II, 28- tracheae III, 29- liquid stream Measure adjusting knob, 30- gas liquid outlet connector, 31- solenoid valve mounting rack, 32- lubricating pump intake interface I, 33- lubricating pump air inlet connecting Mouth II, 34- micro lubricating liquid delivery pipe is portalled, 35- oil cup cap, 36- case lid, 37- insulation dragons and snakes pipe, 38- insulated oil tube, 39- Gas conveyor chamber, 40- hydrophobic oleophobic carbon nano coating, 41- liquid conveyor chamber, 42- top nozzle body, nozzle body under 43-, 44- are exhausted Edge sealing ring, 45- nozzle core, the cyclic annular non-return circle of 46-, 47- micro lubricating liquid convey interface tube, 48- air storage chamber, 49- rotation direction gas Hole, 50- gas-liquid mixed room, 51- accelerating chamber, 52- jet expansion, 53- high-tension bus-bar interface, 54- high-tension bus-bar pick out through-hole, The non-return circle resettlement groove of 55-, 56-V₂O₅Nanofiber sheet, 57- micro-bulge, 58- workpiece power-up device, 59- insulation shell, 60- Weight, 61- permanent magnet, 62- split pin slot, 63- connecting ring, 64- holddown spring, 65- level-one micro-bulge, 66- second level dimpling Body.

Specific embodiment

It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another It indicates, all technical and scientific terms used herein has usual with disclosure 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 embodiment, and be not intended to restricted root According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is 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 their combination.

Embodiment 1

As shown in Fig. 1 (a)-Fig. 1 (d), injection nozzle structure has shown in cylindrical type nozzle such as Fig. 1 (a) at present, conic nozzle As shown in Fig. 1 (b), shown in cone column type nozzle such as Fig. 1 (c) and shown in cone column divergent channel such as Fig. 1 (d).Nozzle is for jet stream VELOCITY DISTRIBUTION, turbulence intensity are more demanding, and nozzle design requirement has more uniform effluxvelocity, and velocity gradient was not easy Greatly, jet stream turbulence intensity wants small, and jet stream does not tend to have larger fluctuation, and the distribution of jet expansion concentration of liquid drops will uniformly, jet stream concentration ladder Degree is not easy excessive.Thought according to related work person's research experience, under the conditions of identical entrance and exit, in terms of VELOCITY DISTRIBUTION, The distribution of cylindrical type nozzle exit velocity is least uniform, and central speed distribution is larger with boundary speed differing distribution, bores column diffused Nozzle exit velocity distribution is most uniform, and cone column type nozzle velocity distribution is better than conic nozzle.In terms of turbulence intensity, cone column diffusion The turbulence intensity of type nozzle is maximum, bores column type nozzle turbulence intensity between cylindrical type nozzle and conic nozzle；Go out in nozzle In terms of oral fluid drips concentration distribution, cone column type jet expansion is the most uniform.

To sum up according to the analysis, cone column type nozzle exit velocity distribution is relatively uniform, outlet turbulence intensity distribution is smaller, and goes out It is the most uniform that oral fluid drips concentration distribution, so the present embodiment is using cone column type nozzle, i.e., as schemed according to the requirement to jet characteristics This kind of nozzle shown in 1 (c).

As shown in Figure 2, Figure 3 and Figure 4, micro- texture electrostatic atomiser of the present embodiment, comprising: top nozzle body 42, lower nozzle body 43, insulated enclosure circle 44, nozzle core 45, cyclic annular non-return circle 46, micro lubricating liquid conveying interface tube 47, air storage chamber 48, rotation direction gas Hole 49, gas-liquid mixed room 50, accelerating chamber 51, jet expansion 52, high-tension bus-bar interface 53, high-tension bus-bar picks out through-hole 54, non-return Enclose resettlement groove 55, V₂O₅Nanofiber sheet 56, micro-bulge 57.

The top nozzle body 42 is threadingly attached to top, and lower nozzle body 43 is threadingly attached under nozzle core 45 Side, is provided with insulated enclosure circle 44 between top nozzle body 42 and lower nozzle body 43, can effectively prevent the gas in nozzle from leaking. Top nozzle body 42 and lower nozzle body 43 are isolation material, and nozzle core 45 is metal conductive materials.It is provided with above top nozzle body 42 Micro lubricating liquid conveys interface tube 47, and micro lubricating liquid conveying interface tube 47 can be connected by screw thread with insulation dragons and snakes pipe 37. It can be entered in electrostatic atomiser to flow through the compressed air of insulation dragons and snakes pipe 37.Air storage chamber 48 is provided in nozzle core 45, Air storage chamber 48 plays the role of storing compressed air and decompression, the free space ibid formed between nozzle body 42 and nozzle core 45 Also function to identical effect.Gas-liquid mixed room 50 is disposed with inside nozzle core 45 from top to bottom, accelerating chamber 51 and nozzle go out Mouth 52.For 51 angle of throat α of accelerating chamber between 5-20 °, it is L that nozzle outlet diameter, which is B length, L/B value between 2 and 6, this reality Applying α in example is 13 °, B 1mm, L/B 4.

Non-return circle resettlement groove 55 is provided with above nozzle core 45, cyclic annular non-return circle 46 is fixedly bonded to non-return circle resettlement groove 55 In slot.Cyclic annular non-return circle 46 is a flexible insulating annular rubber ring, and array is placed with 4- on cyclic annular non-return circle 46 10 V₂O₅Nanofiber sheet 56, in Fig. 3 for 8.V₂O₅Nanofiber sheet 56 is pasted one week along cyclic annular non-return circle 46 Annular center hole is covered, insulated oil tube 38 is from multi-disc V₂O₅56 center of nanofiber sheet passes into gas-liquid mixed room 50 It is interior, V₂O₅Nanofiber sheet 56 has special property, and the strong reversible that can carry out similar muscle under the action of an external electric field is received Contracting, can tightly encase insulated oil tube 38, avoid air-flow caused by 50 interior air-flow of gas-liquid mixed room and lubricating fluid reflux, ring The non-return circle 46 of shape has certain elasticity, and elastic deformation amount can offset V₂O₅The shrinkage of nanofiber sheet 56.On nozzle core 45 It is provided with rotation direction stomata 49, rotation direction stomata 49 is along 50 outer wall array arrangement of gas-liquid mixed room, inlet axis and gas-liquid mixed room 50 inner cavity wall surfaces are tangent, and compressed air flows through rotation direction stomata 49 and enters gas-liquid mixed room 50 with tangential velocity v.Since compression is empty Gas is entered in gas-liquid mixed room 50 by multiple rotation direction stomatas 49 simultaneously, and directional velocity is non-intersecting with axial centre, therefore The air-flow of entrance there are a moment of momentum, promotes air-flow to rotate in gas-liquid mixed room 50 around axial centre, simultaneously axial centre It is promoted to jet expansion direction, so that nano-fluid be driven to rotate to form vortex.The formation of the vortex makes micro lubricating liquid and pressure Contracting air is adequately mixed, while also resulting in the formation of sinuous flow.Accelerating chamber 51 and jet expansion 52 are mainly used for jet stream Accelerate and lubricating fluid sprawling in nozzle, lubricating fluid usually pull into liquid film or liquidus with exit in nozzle, finally exist The external force such as aerodynamic force and electrostatic force are made of lower finished breaking into drop.High-tension bus-bar interface 53 is provided on nozzle core 45, under Be provided with high-tension bus-bar on nozzle body 43 and pick out through-hole 54, high direct voltage electric wire 8 can pass through high-tension bus-bar pick out through-hole 54 with High-tension bus-bar interface 53 is connected, to power for nozzle core 45.A series of micro-bulges 57 are provided on 51 inner wall of accelerating chamber, it is micro- The specific form of convex body 57 and position are as shown in Figure 6.

As shown in Fig. 5 (a)-Fig. 6, micro-bulge 57 is evenly spaced on 51 inner wall of accelerating chamber, and micro-bulge is in the present embodiment Hexagonal prisms, same micro-bulge 57 or cylindrical body, cone and polygonal prism body.The horizontal centre of each micro-bulge 57 away from It is a between 5-50 μm, away from being b between 5-50 μm, it is highly h at 3-30 μm that side length, which is c between 2-7 μm, at vertical center Between, area ratio/occupancy ratio η (i.e. whole 57 projected areas of micro-bulge and entire 51 inner surface area ratio of accelerating chamber) is in 20-80% Between.

The present embodiment a is 15 μm ± 3 μm, and b is 15 μm ± 3 μm, and c is 4 μm ± 0.5 μm, and h is 10 μm ± 1 μm, η 40%, It is L to accelerate chamber internal surface 51 to intercept the square that side length is L be analytical unit its area²。

It should be noted that the master of the nozzle accelerating chamber inside surface roughness factor can be realized by micro-bulge parameter setting Dynamic design.

The formation of sinuous flow is unfavorable for uniformly sprawling for micro lubricating liquid in conventional electrostatic nozzle, and lubricating fluid and compressed air exist The mixing of rotation direction air-flow, which is used down, becomes extremely unstable, and the uneven turbulence intensity of VELOCITY DISTRIBUTION is larger, after accelerated room accelerates It is this show become particularly evident, the droplets size distribution for eventually leading to nozzle ejection is also very uneven, due to the liquidus of formation It fluctuates and larger is also unfavorable for being formed controllably transporting after drop.Micro- texture electrostatic atomiser of the present embodiment is accelerating indoor side surface A series of micro-bulges are set, the oleophylic performance for accelerating chamber internal surface is considerably increased.Accelerating the oleophylic performance of chamber internal surface can have The micro lubricating liquid that the absorption of effect is flowed out out of mixing chamber, improves the resistance of motion of micro lubricating liquid, and in compressed air Uniform oil film is formed under the effect of pullling, the disturbance for greatly reducing jet stream improves the uniformity of liquid film liquidus, so that most End form at droplet distribution it is also more uniform, motion path is also more controllable.Accelerate a series of micro- of indoor side surface setting Convex body also significantly increases the contact area of nozzle core Yu micro lubricating liquid, also considerably increases since it is preferably lipophilic The time that micro lubricating liquid is in contact with it, therefore there is more preferably charging performance.

Embodiment 2

As shown in figs 2-4, the compound micro- texture electrostatic atomiser of the second level of the present embodiment, comprising:

Top nozzle body 42, lower nozzle body 43, insulated enclosure circle 44, nozzle core 45, cyclic annular non-return circle 46, micro lubricating liquid is defeated Send interface tube 47, air storage chamber 48, rotation direction stomata 49, gas-liquid mixed room 50, accelerating chamber 51, jet expansion 52, high-tension bus-bar interface 53, high-tension bus-bar picks out through-hole 54, non-return circle resettlement groove 55, V₂O₅Nanofiber sheet 56, micro-bulge 57.

The top nozzle body 42 is threadingly attached to top, and lower nozzle body 43 is threadingly attached under nozzle core 45 Side, is provided with insulated enclosure circle 44 between top nozzle body 42 and lower nozzle body 43, can effectively prevent the gas in nozzle from leaking. Top nozzle body 42 and lower nozzle body 43 are isolation material, and nozzle core 45 is metal conductive materials.It is provided with above top nozzle body 42 Micro lubricating liquid conveys interface tube 47, and micro lubricating liquid conveying interface tube 47 can be connected by screw thread with insulation dragons and snakes pipe 37. It can be entered in electrostatic atomiser to flow through the compressed air of insulation dragons and snakes pipe 37.Air storage chamber 48 is provided in nozzle core 45, Air storage chamber 48 plays the role of storing compressed air and decompression, the free space ibid formed between nozzle body 42 and nozzle core 45 Also function to identical effect.Gas-liquid mixed room 50 is disposed with inside nozzle core 45 from top to bottom, accelerating chamber 51 and nozzle go out Mouth 52.For 51 angle of throat α of accelerating chamber between 5-20 °, it is L that nozzle outlet diameter, which is B length, L/B value between 2 and 6, this reality Applying α in example is 13 °, B 1mm, L/B 4.

Non-return circle resettlement groove 55 is provided with above nozzle core 45, cyclic annular non-return circle 46 is fixedly bonded to non-return circle resettlement groove 55 In slot.Cyclic annular non-return circle 46 is a flexible insulating annular rubber ring, and array is placed with 4- on cyclic annular non-return circle 46 10 V₂O₅Nanofiber sheet 56, in Fig. 3 for 8.V₂O₅Nanofiber sheet 56 is pasted one week along cyclic annular non-return circle 46 Annular center hole is covered, insulated oil tube 38 is from multi-disc V₂O₅56 center of nanofiber sheet passes into gas-liquid mixed room 50 It is interior, V₂O₅Nanofiber sheet 56 has special property, and the strong reversible that can carry out similar muscle under the action of an external electric field is received Contracting, can tightly encase insulated oil tube 38, avoid air-flow caused by 50 interior air-flow of gas-liquid mixed room and lubricating fluid reflux, ring The non-return circle 46 of shape has certain elasticity, and elastic deformation amount can offset V₂O₅The shrinkage of nanofiber sheet 56.On nozzle core 45 It is provided with rotation direction stomata 49, rotation direction stomata 49 is along 50 outer wall array arrangement of gas-liquid mixed room, inlet axis and gas-liquid mixed room 50 inner cavity wall surfaces are tangent, and compressed air flows through rotation direction stomata 49 and enters gas-liquid mixed room 50 with tangential velocity v.Since compression is empty Gas is entered in gas-liquid mixed room 50 by multiple rotation direction stomatas 49 simultaneously, and directional velocity is non-intersecting with axial centre, therefore The air-flow of entrance there are a moment of momentum, promotes air-flow to rotate in gas-liquid mixed room 50 around axial centre, simultaneously axial centre It is promoted to jet expansion direction, so that nano-fluid be driven to rotate to form vortex.The formation of the vortex makes micro lubricating liquid and pressure Contracting air is adequately mixed, while also resulting in the formation of sinuous flow.Accelerating chamber 51 and jet expansion 52 are mainly used for jet stream Accelerate and lubricating fluid sprawling in nozzle, lubricating fluid usually pull into liquid film or liquidus with exit in nozzle, finally exist The external force such as aerodynamic force and electrostatic force are made of lower finished breaking into drop.High-tension bus-bar interface 53 is provided on nozzle core 45, under Be provided with high-tension bus-bar on nozzle body 43 and pick out through-hole 54, high direct voltage electric wire 8 can pass through high-tension bus-bar pick out through-hole 54 with High-tension bus-bar interface 53 is connected, to power for nozzle core 45.A series of micro-bulges 57 are provided on 51 inner wall of accelerating chamber, it is micro- The specific form of convex body 57 and position such as Fig. 7 (a) and Fig. 7 (b) are shown.

As shown in Fig. 7 (a) and Fig. 7 (b), the micro-bulge 57 of the present embodiment is by level-one micro-bulge 65 and 66 groups of second level micro-bulge At, be evenly spaced on 51 inner wall of accelerating chamber, second level micro-bulge 66 be arranged on level-one micro-bulge 65.Level-one is micro- in the present embodiment Convex body 65 and second level micro-bulge 66 are cylinder, and diameter is respectively d₁And d₂, d₂For d₁1/5-2/3.Equally also it can be set For cone and polygonal prism body.The horizontal centre of each level-one micro-bulge 65 away from being a between 5-50 μm, vertical center away from for B is highly h between 3-30 μm between 5-50 μm, 65 area ratio/occupancy ratio η of level-one micro-bulge (i.e. whole level-one micro-bulges 65 51 inner surface area ratio of projected area and entire accelerating chamber) between 20-80%, level-one can be obtained in occupation rate η according to area 65 numbers of micro-bulge are n₁.66 height h ' of second level micro-bulge is the 1/5-1/3 of h, and 66 area ratio/occupancy ratio η ' of second level micro-bulge is (i.e. complete 66 projected area of portion's second level micro-bulge and 65 surface area ratio of level-one micro-bulge) between 30-80%, occupation rate according to area It is n that 66 numbers of second level micro-bulge on each level-one micro-bulge 65, which can be obtained, in η '₂。

D in the present embodiment₁It is 4 μm ± 0.5 μm, d₂It is 1.5 μm ± 0.5 μm, a is 15 μm ± m μm, and b is 15 μm ± m μm, h It is 10 μm ± 1 μm, η 40%, h ' are 3 μm ± 0.5 μm, and η ' is 50%.

The compound micro- texture electrostatic atomiser of the second level of the present embodiment is accelerating a series of micro-bulges of indoor side surface setting, dimpling Body is that second level composite construction is made of level-one micro-bulge and second level micro-bulge, compared to individual micro-bulge structure composite micro-bulge It undoubtedly can larger increase the oleophylic performance of fast chamber internal surface.Accelerating the oleophylic performance of chamber internal surface can effectively adsorb from mixing The micro lubricating liquid of indoor outflow improves the resistance of motion of micro lubricating liquid, and is formed under the effect of pullling of compressed air Uniform oil film, the disturbance for greatly reducing jet stream improve the uniformity of liquid film liquidus, so that finally formed drop point Cloth is also more uniform, and motion path is also more controllable.Accelerate a series of compound micro-bulge of second levels of indoor side surface setting The contact area of nozzle core Yu micro lubricating liquid is significantly increased, also considerably increases micro profit since it is preferably lipophilic The time that synovia is in contact with it, therefore there is more preferably charging performance.

Embodiment 3

As shown in figs 2-4, the noise reduction of the present embodiment increases resistance electrostatic atomiser and specifically includes, top nozzle body 42, lower nozzle body 43, insulated enclosure circle 44, nozzle core 45, cyclic annular non-return circle 46, micro lubricating liquid conveying interface tube 47, air storage chamber 48, rotation direction gas Hole 49, gas-liquid mixed room 50, accelerating chamber 51, jet expansion 52, high-tension bus-bar interface 53, high-tension bus-bar picks out through-hole 54, non-return Enclose resettlement groove 55, V₂O₅Nanofiber sheet 56, micro-bulge 57.

The top nozzle body 42 is threadingly attached to top, and lower nozzle body 43 is threadingly attached under nozzle core 45 Side, is provided with insulated enclosure circle 44 between top nozzle body 42 and lower nozzle body 43, can effectively prevent the gas in nozzle from leaking. Top nozzle body 42 and lower nozzle body 43 are isolation material, and nozzle core 45 is metal conductive materials.It is provided with above top nozzle body 42 Micro lubricating liquid conveys interface tube 47, and micro lubricating liquid conveying interface tube 47 can be connected by screw thread with insulation dragons and snakes pipe 37. It can be entered in electrostatic atomiser to flow through the compressed air of insulation dragons and snakes pipe 37.Air storage chamber 48 is provided in nozzle core 45, Air storage chamber 48 plays the role of storing compressed air and decompression, the free space ibid formed between nozzle body 42 and nozzle core 45 Also function to identical effect.Gas-liquid mixed room 50 is disposed with inside nozzle core 45 from top to bottom, accelerating chamber 51 and nozzle go out Mouth 52.For 51 angle of throat α of accelerating chamber between 5-20 °, it is L that nozzle outlet diameter, which is B length, L/B value between 2 and 6, this reality Applying α in example is 13 °, B 1mm, L/B 4.Non-return circle resettlement groove 55 is provided with above nozzle core 45, cyclic annular non-return circle 46 is fixed It is bonded in non-return 55 slot of circle resettlement groove.Cyclic annular non-return circle 46 is a flexible insulating annular rubber ring, is stopped in ring-type Array is placed with 4-10 piece V on inverse circle 46₂O₅Nanofiber sheet 56, in Fig. 3 for 8.V₂O₅56 edge of nanofiber sheet Cyclic annular non-return circle 46, which is pasted one week, covers annular center hole, and insulated oil tube 38 is from multi-disc V₂O₅It wears at 56 center of nanofiber sheet It crosses and enters in gas-liquid mixed room 50, V₂O₅Nanofiber sheet 56 has special property, can carry out under the action of an external electric field The strong reversible of similar muscle is shunk, and can tightly be encased insulated oil tube 38, avoiding 50 interior air-flow of gas-liquid mixed room causes Air-flow and lubricating fluid reflux, cyclic annular non-return circle 46 there is certain elasticity, elastic deformation amount can offset V₂O₅Nanofiber sheet 56 shrinkage.Be provided with rotation direction stomata 49 on nozzle core 45, rotation direction stomata 49 be along 50 outer wall array arrangement of gas-liquid mixed room, Inlet axis and 50 inner cavity wall surface of gas-liquid mixed room are tangent, and compressed air flows through rotation direction stomata 49 and enters gas with tangential velocity v Liquid mixing chamber 50.Since compressed air is entered in gas-liquid mixed room 50 by multiple rotation direction stomatas 49 simultaneously, directional velocity It is non-intersecting with axial centre, thus enter air-flow to axial centre there are a moment of momentum, promote air-flow in gas-liquid mixed room 50 rotate around axial centre, while promoting to jet expansion direction, so that nano-fluid be driven to rotate to form vortex.The vortex Formation mixes micro lubricating liquid adequately with compressed air, while also resulting in the formation of sinuous flow.Accelerating chamber 51 and spray Mouth outlet 52 is mainly used for jet stream and accelerates usually to pull in nozzle with exit with lubricating fluid sprawling in nozzle, lubricating fluid At liquid film or liquidus, finally under the using of the external force such as aerodynamic force and electrostatic force finished breaking at drop.It is arranged on nozzle core 45 There is high-tension bus-bar interface 53, high-tension bus-bar is provided on lower nozzle body 43 and picks out through-hole 54, high direct voltage electric wire 8 can pass through height Piezoelectric wire picks out through-hole 54 and is connected with high-tension bus-bar interface 53, to power for nozzle core 45.It is arranged on 51 inner wall of accelerating chamber Have shown in a series of micro-bulges 57, the specific form of micro-bulge 57 and position such as Fig. 8 (a) and Fig. 8 (b).

As shown in Fig. 8 (a) and Fig. 8 (b), micro-bulge 57 is evenly spaced on 51 inner wall of accelerating chamber, after accelerating chamber 51 is unfolded The angle of a length of L in top, following a length of L ', a height of H, top and expansion side is β.Micro-bulge is that pricker bar shape is (each in the present embodiment Pricker bar groove is formed between pricker bar shape micro-bulge 57).The upper width of pricker bar shape micro-bulge 57 is a between 3-30 μm, two The distance of top is a ', and a=a ' between pricker bar shape micro-bulge 57.The lower width of pricker bar shape micro-bulge 57 is b and two cone The distance of lower section is b ' between strip micro-bulge 57, and b=b ', a/a '=L/L ' in the embodiment, pricker bar shape micro-bulge 57 A height of h.Area ratio/occupancy ratio η (i.e. whole 57 projected areas of micro-bulge and entire 51 inner surface area ratio of accelerating chamber) is in 20- Between 80%.The present embodiment a is 15 μm ± m μm, and h is 10 μm ± m μm, η 50%.

The noise reduction of the present embodiment increases resistance electrostatic atomiser and is accelerating indoor side surface that a series of pricker bar shape micro-bulges are arranged, significantly Increase the oleophylic performance for accelerating chamber internal surface.Accelerate the oleophylic performance of chamber internal surface that can effectively adsorb to flow out out of mixing chamber Micro lubricating liquid, improve the resistance of motion of micro lubricating liquid, and form uniform oil film under the effect of pullling of compressed air, The disturbance for greatly reducing jet stream improves the uniformity of liquid film liquidus, so that finally formed droplet distribution is also more equal Even, motion path is also more controllable.Meanwhile the pricker bar groove formed between pricker bar shape micro-bulge can be effectively reduced and be made an uproar Sound reduces the harm to operator's hearing health.A series of micro-bulges of indoor side surface setting are accelerated also greatly to increase The contact area for having added nozzle core Yu micro lubricating liquid also considerably increases micro lubricating liquid and its since it is preferably lipophilic The time of contact, therefore there is more preferably charging performance.

Embodiment 4

As shown in figs 2-4, a kind of gradual change asperity contact formula electrostatic atomiser of the present embodiment, comprising: top nozzle body 42, Lower nozzle body 43, insulated enclosure circle 44, nozzle core 45, cyclic annular non-return circle 46, micro lubricating liquid convey interface tube 47, air storage chamber 48, rotation direction stomata 49, gas-liquid mixed room 50, accelerating chamber 51, jet expansion 52, high-tension bus-bar interface 53, high-tension bus-bar picks out logical Hole 54, non-return circle resettlement groove 55, V₂O₅Nanofiber sheet 56, micro-bulge 57.

The top nozzle body 42 is threadingly attached to top, and lower nozzle body 43 is threadingly attached under nozzle core 45 Side, is provided with insulated enclosure circle 44 between top nozzle body 42 and lower nozzle body 43, can effectively prevent the gas in nozzle from leaking. Top nozzle body 42 and lower nozzle body 43 are isolation material, and nozzle core 45 is metal conductive materials.It is provided with above top nozzle body 42 Micro lubricating liquid conveys interface tube 47, and micro lubricating liquid conveying interface tube 47 can be connected by screw thread with insulation dragons and snakes pipe 37. It can be entered in electrostatic atomiser to flow through the compressed air of insulation dragons and snakes pipe 37.Air storage chamber 48 is provided in nozzle core 45, Air storage chamber 48 plays the role of storing compressed air and decompression, the free space ibid formed between nozzle body 42 and nozzle core 45 Also function to identical effect.Gas-liquid mixed room 50 is disposed with inside nozzle core 45 from top to bottom, accelerating chamber 51 and nozzle go out Mouth 52.For 51 angle of throat α of accelerating chamber between 5-20 °, it is L that nozzle outlet diameter, which is B length, L/B value between 2 and 6, this reality Applying α in example is 13 °, B 1mm, L/B 4.Non-return circle resettlement groove 55 is provided with above nozzle core 45, cyclic annular non-return circle 46 is fixed It is bonded in non-return 55 slot of circle resettlement groove.Cyclic annular non-return circle 46 is a flexible insulating annular rubber ring, is stopped in ring-type Array is placed with 4-10 piece V on inverse circle 46₂O₅Nanofiber sheet 56, in Fig. 3 for 8.V₂O₅56 edge of nanofiber sheet Cyclic annular non-return circle 46, which is pasted one week, covers annular center hole, and insulated oil tube 38 is from multi-disc V₂O₅It wears at 56 center of nanofiber sheet It crosses and enters in gas-liquid mixed room 50, V₂O₅Nanofiber sheet 56 has special property, can carry out under the action of an external electric field The strong reversible of similar muscle is shunk, and can tightly be encased insulated oil tube 38, avoiding 50 interior air-flow of gas-liquid mixed room causes Air-flow and lubricating fluid reflux, cyclic annular non-return circle 46 there is certain elasticity, elastic deformation amount can offset V₂O₅Nanofiber sheet 56 shrinkage.Be provided with rotation direction stomata 49 on nozzle core 45, rotation direction stomata 49 be along 50 outer wall array arrangement of gas-liquid mixed room, Inlet axis and 50 inner cavity wall surface of gas-liquid mixed room are tangent, and compressed air flows through rotation direction stomata 49 and enters gas with tangential velocity v Liquid mixing chamber 50.Since compressed air is entered in gas-liquid mixed room 50 by multiple rotation direction stomatas 49 simultaneously, directional velocity It is non-intersecting with axial centre, thus enter air-flow to axial centre there are a moment of momentum, promote air-flow in gas-liquid mixed room 50 rotate around axial centre, while promoting to jet expansion direction, so that nano-fluid be driven to rotate to form vortex.The vortex Formation mixes micro lubricating liquid adequately with compressed air, while also resulting in the formation of sinuous flow.Accelerating chamber 51 and spray Mouth outlet 52 is mainly used for jet stream and accelerates usually to pull in nozzle with exit with lubricating fluid sprawling in nozzle, lubricating fluid At liquid film or liquidus, finally under the using of the external force such as aerodynamic force and electrostatic force finished breaking at drop.It is arranged on nozzle core 45 There is high-tension bus-bar interface 53, high-tension bus-bar is provided on lower nozzle body 43 and picks out through-hole 54, high direct voltage electric wire 8 can pass through height Piezoelectric wire picks out through-hole 54 and is connected with high-tension bus-bar interface 53, to power for nozzle core 45.It is arranged on 51 inner wall of accelerating chamber Have shown in a series of micro-bulges 57, the specific form of micro-bulge 57 and position such as Fig. 9 (a) and Fig. 9 (b).

As shown in Fig. 9 (a) and Fig. 9 (b) and Figure 10, micro-bulge 57 is evenly spaced on 51 inner wall of accelerating chamber, this implementation Micro-bulge is hexagonal prisms, same micro-bulge 57 or cylindrical body, cone and polygonal prism body in example.Micro-bulge 57 is adopted With the non-contour structure of transition type, i.e. micro-bulge height is gradually reduced along the jet stream direction of motion, and difference in height is Δ h between adjacent two rows. The horizontal centre of each micro-bulge 57 is away from being a between 5-50 μm, and vertical center is away from being b between 5-50 μm, most short micro-bulge Height is h between 2-15 μm, and difference in height is that Δ h is (i.e. 57 perspective plane of whole micro-bulges area ratio/occupancy ratio η between 0.3-2 μm Long-pending and entire 51 inner surface area ratio of accelerating chamber) between 20-80%, 57 upper surface of micro-bulge and 51 inner surface of accelerating chamber press from both sides Angle is β.The present embodiment a is 15 μm ± 3 μm, and b is 15 μm ± 3 μm, and h is 4 μm ± 0.3 μm, and Δ h is 0.5 μm ± 0.1 μm, and η is 40%.It is L to accelerate chamber internal surface 51 to intercept the square that side length is L be analytical unit its area², and including most short dimpling Body.

A kind of gradual change asperity contact formula electrostatic atomiser of the present embodiment is accelerating a series of transition of indoor side surface setting The non-contour micro-bulge of formula, using transition type micro-bulge structure can make micro lubricating liquid accelerate the indoor resistance of motion from greatly to Small distribution helps to form uniform oil film under the effect of pullling of compressed air, while the disturbance for greatly reducing jet stream improves The uniformity of liquid film liquidus, so that finally formed droplet distribution is also more uniform, motion path is also more controllable. A series of micro-bulges of indoor side surface setting are accelerated also to significantly increase the contact area of nozzle core Yu micro lubricating liquid, by In it, preferably lipophilicity also considerably increases the time that micro lubricating liquid is in contact with it, therefore has more preferably charge Energy.

Embodiment 5

The controllable jet micro lubricating grinding system of the present embodiment, including such as Fig. 2-micro- texture electrostatic atomiser shown in fig. 6.

As shown in figure 11, the controllable jet micro lubricating grinding system of embodiment, including grinding machine part workbench 1, insulation Plate 2, workpiece 3, grinding wheel 4, wheel guard 5, magnetic suction disc 6, micro lubricating liquid delivery pipe 7, high direct voltage electric wire 8, adjustable high pressure DC power supply 9, electrostatic atomiser 10, workpiece power-up device 58 and minimum quantity lubrication device.

Insulating sheet material 2 is covered on grinding machine part workbench 30, and (this material can be but non-conductive with magnetic conduction, to both may be used To guarantee that the installation of workpiece can guarantee to form consistent electric field between nozzle and workpiece again).Magnetic suction disc 6 is adsorbed on wheel guard 5 Side, using that being connected in the fixed micro lubricating liquid delivery pipe 7 of ambroin linking fastener and high direct voltage electric wire 8 with nozzle Item.7 one end of micro lubricating liquid delivery pipe is connected with minimum quantity lubrication device, and the other end is connected with electrostatic atomiser.High direct voltage electric wire 8 Wherein one one end and electrostatic atomiser are connected to nozzle power supply, the cathode output end of the other end and adjustable high voltage D. C 9 It is connected.One end of another high direct voltage electric wire 8 is connected the other end and adjustable high voltage D. C 9 with workpiece power-up device 58 Cathode output end is connected, and carries out grounding.Workpiece power-up device 58 is adsorbed in the non-processing surface of workpiece 3, by workpiece It is connected with 9 anode of adjustable high voltage D. C.To make nozzle negative polarity, workpiece surface is positive polarity, nozzle and workpiece it Between form electric field, controllably transport the condition of offer for micro lubricating drop.

As shown in figure 12, minimum quantity lubrication device specifically includes cabinet 11, and insulate lubricating cup connector 12, and insulate lubricating cup 13, insulation Fixing bolt 14, insulating washer 15, insulation connection bolt 16, micro pump fixed plate 17, precision micro-lubricating pump 18, throughput tune Knob 19 is saved, threeway 20 of insulating, solenoid valve 21, filtering pressure regulator valve 22, gas source connector 23, bidirectional joint 24, impulse controller 25, Tracheae I 26, tracheae II 27, tracheae III 28, flow quantity adjusting knob 29, gas liquid outlet connector 30, solenoid valve mounting rack 31, lubrication Intake interface I 32, lubricating pump intake interface II 33 are pumped, micro lubricating liquid delivery pipe portals 34, oil cup cap 35, case lid 36.

Cabinet 11 is made of ambroin, and case lid 36 made of ambroin are provided in front of cabinet 11.It is set in cabinet 11 Two groups of precision micro-lubricating pumps 18 are equipped with, two groups of about 18 precision micro-lubricating pumps are arranged in juxtaposition, and connect bolt 16 by insulation Precision micro-lubricating pump 18 is fixedly connected on 17 lower section of micro pump fixed plate, micro pump fixed plate is reserved with feed liquor on 17 lower section Hole, position are corresponding with precision micro-lubricating 18 inlet openings of pump.Further pass through insulating fixing bolt 14 and insulating washer 15 Micro pump fixed plate 17 is fixedly connected on 11 inside top of cabinet.Insulation lubricating cup connector 12, which passes through, passes through screw thread above cabinet 11 It is fastened on the inlet opening being arranged above micro pump fixed plate 17,12 top of insulation lubricating cup connector and insulation 13 phase of lubricating cup Even, to pump 18 feed flows for precision micro-lubricating, oil cup cap 35 is provided with above the lubricating cup 13 that insulate.

23 one end of gas source connector is fixed on filtering pressure regulator valve 22, and the other end is connected with compressed air gas source.Filter pressure regulation Setting and 11 outside of cabinet, compressed air enter filtering pressure regulator valve 22 by gas source connector 23 on valve 22, and filtering pressure regulator valve 22 is used for Compressed air filters and enters atmospheric pressure adjusting, to provide pressure stable clean compressed air for lubricating system.Filter pressure regulation Valve 22 is connected by bidirectional joint 24 with solenoid valve 21, controls the on-off of compressed air, solenoid valve 21 is fixedly mounted on electromagnetism On valve mounting rack 31, solenoid valve mounting rack 31 is arranged in cabinet 11.The outlet of solenoid valve 21 and insulation 20 right side interface phase of threeway Connection, compressed air introduce compressed air into impulse controller 25 by tracheae I 26 by insulation 20 lower section interface of threeway, compress Air further passes through tracheae II 27 and enters the lubricating pump intake interface II 33 that 18 lower section of precision micro-lubricating pump is arranged, this is all the way Compressed air can be described as imbibition gas circuit, therefore for the micro lubricating liquid in 18 sucking insulation lubricating cup 13 of precision micro-lubricating pump Outlet frequency can be controlled by impulse controller 25, and then controls the frequency of 18 sucking lubricating fluid of precision micro-lubricating pump.Absolutely 20 left side interface of edge threeway is connected by tracheae III 28 with the lubricating pump intake interface I 32 that 18 lower section of precision micro-lubricating pump is arranged It connects, compressed air can be described as atomization gas circuit for conveying atomization micro lubricating liquid all the way for this.It is arranged on precision micro-lubricating pump 18 There are throughput adjusting knob 19 and flow quantity adjusting knob 29, throughput adjusting knob 19 is for adjusting atomization gas circuit compressed air Flow, flow quantity adjusting knob 29 for adjustment precision micro lubricating pump 18 each pulses in liquid absorption amount.Micro lubricating liquid Delivery pipe 7 pass through the micro lubricating liquid delivery pipe being arranged below cabinet portal 34 with the gas-liquid that is arranged on precision micro-lubricating pump 18 Outlet connection 30 is connected, the output for atomizing air and micro lubricating liquid.

As shown in figure 13, micro lubricating liquid delivery pipe 7 is specifically by the dragons and snakes pipe 37 that insulate, insulated oil tube 38, gas conveyor chamber 39, hydrophobic oleophobic carbon nano coating 40, more than 41 part of liquid conveyor chamber composition.

7 outermost of micro lubricating liquid delivery pipe is insulation dragons and snakes pipe 37, is internally provided with insulated oil tube 38, and insulate dragons and snakes pipe Gas conveyor chamber 39 is formed between 37 and insulated oil tube 38, is conveyed for atomizing air.38 internal coat of insulated oil tube has hydrophobic Oleophobic carbon nano coating 40, while liquid conveyor chamber is formed in inside.One end of insulation dragons and snakes pipe 37 and gas liquid outlet connector 30 It is connected connected, the other end is connected with electrostatic atomiser, and then atomizing air is made to enter electrostatic by precision micro-lubricating pump 18 Mouth.The micro lubricating liquid that 38 one end of insulated oil tube passes through the 18 inside setting of gas liquid outlet connector 30 and precision micro-lubricating pump exports It is connected, the other end is connected with electrostatic atomiser, and then micro lubricating liquid is made to enter electrostatic atomiser by precision micro-lubricating pump 18, can See in the present embodiment atomizing air and micro lubricating liquid using coaxial form supplied to nozzle.

As shown in figure 14, adjustable high voltage D. C is by AC power unit, direct-flow voltage regulation unit V1, direct-flow voltage regulation unit V2, self-maintained circuit, power amplification circuit, high-frequency impulse booster, voltage doubling rectifing circuit and constant current automatic control circuit group At.

The high-voltage DC power supply of the present embodiment can generate higher electrostatic high-pressure, and supply current is small, security performance compared with It is high.Cabinet used by the present embodiment, insulation dragons and snakes pipe, insulated oil tube, insulating fixing bolt, insulating washer, insulation connection spiral shell Bolt, micro pump fixed plate, insulate lubricating cup connector, and insulation lubricating cup is that insulating materials is made, and effectively prevents system electric leakage.

As shown in Figure 15 (a) and Figure 15 (b), workpiece power-up device 58 is opened by insulation shell 59, weight 60, permanent magnet 61 Mouth pin slot 62, connecting ring 63, holddown spring 64 are constituted.

Permanent magnet 61 is provided in insulation shell 59, weight 60 is arranged at 59 center of insulation shell, and 60 lower part of weight passes through Insulation shell 59.60 tail portion of weight is provided with split pin slot 62 and connecting ring 63, is arranged between weight 60 and insulation shell 59 There is holddown spring 64.When by 58 surface non-processing close to workpiece of workpiece power-up device, permanent magnet 61 can generate attraction with workpiece 3 Holddown spring 64 is compressed, while holddown spring 64 provides reaction force, guarantees that weight 60 and workpiece 3 are closely coupled.In weight 60 On be provided with split pin slot 62, effect is insertion opening pin, when guaranteeing that workpiece power-up device 58 is not adsorbed with workpiece 3, pressure Iron 60 and holddown spring 64 will not fall off from insulation shell 59.Connecting ring 63 passes through high direct voltage electric wire 8 and adjustable height straightening 9 positive terminal of galvanic electricity source is connected.

The specific work process of the controllable jet micro lubricating grinding system of the present embodiment is as follows；

Insulating sheet material 2 is laid on grinding machine part workbench 1, workpiece 3 is placed on insulating sheet material 2, opens work Platform magnetic switch steps up workpiece.By electrostatic atomiser according to above-mentioned connection type by top nozzle body 42, lower nozzle body 43, insulated enclosure Circle 44, nozzle core 45, cyclic annular non-return 46 connection of circle.Insulation 13 top oil cup cap 35 of lubricating cup is opened to the insulation injection lubrication of lubricating cup 13 Liquid (the usually nano-fluid that pure plant base oil and nanoparticle mix).7 both ends of micro lubricating liquid delivery pipe are distinguished It is connected with electrostatic atomiser and minimum quantity lubrication device, the insulation dragons and snakes pipe 37 of the described one end that is connected with electrostatic atomiser and micro profit Synovia conveying interface tube 47 is connected, and insulated oil tube 38 is from multi-disc V₂O₅It is mixed that 56 center of nanofiber sheet passes into gas-liquid It closes in room 50.It is arranged on insulation dragons and snakes pipe 37 and the precision micro-lubricating pump 18 of the described one end that is connected with minimum quantity lubrication device Gas liquid outlet connector 30 is connected, and 38 one end of insulated oil tube passes through to be set inside gas liquid outlet connector 30 and precision micro-lubricating pump 18 The micro lubricating liquid outlet set is connected.Insulated oil tube 38 micro lubricating can be pumped in lubricating fluid conveyed by liquid conveyor chamber 41 To gas-liquid mixed room 50.Atomization compressed air can be delivered to nozzle body by gas conveyor chamber 39 by insulation dragons and snakes pipe 37 It is interior.One end of one high direct voltage electric wire 8 is picked out through-hole 54 across high-tension bus-bar to be connected with high-tension bus-bar interface 53, it is another End is connected with 9 negative terminal of adjustable high voltage D. C.Micro lubricating liquid delivery pipe 7 and this high direct voltage electric wire 8 utilize Magnetic suction disc 6, which is fixed on wheel guard 5, prevents play.Take a high direct voltage electric wire 8 that one end is connected with connecting ring 63 again, The other end is connected with 9 positive terminal of adjustable high voltage D. C.Workpiece power-up device 58 is adsorbed on to the non-processing table of workpiece 3 Face controllably transports the condition of offer to make to form electric field between electrostatic atomiser and workpiece 3 for micro lubricating mist of oil.Described in scheme Cabinet 11, insulation dragons and snakes pipe 37, insulated oil tube 38, insulating fixing bolt 14, insulating washer 15, insulation connection bolt 16 are micro Fixed plate 17 is pumped, insulate lubricating cup connector 12, and insulation lubricating cup 13 is all made of insulating materials and is made, and effectively prevents system electric leakage.

Compressed air will be provided for minimum quantity lubrication device on extraneous gas source and gas source connector 23, opens filtering pressure regulator valve 22 and adjust It saves to required pressure.Compressed air enters solenoid valve 21 through filtering pressure regulator valve 22 and bidirectional joint 24, and solenoid valve 21 can control The on-off of compressed air.Compressed air passes through the outlet of solenoid valve 21 and enters insulation threeway 20, and insulation threeway 20 divides compressed air Outlet frequency can control by impulse controller 25 wherein entering impulse controller 25 by tracheae I 26 all the way for two-way. Compressed air enters the profit that 18 lower section of precision micro-lubricating pump is arranged by tracheae II 27 after impulse controller 25 adjusts frequency Sliding pump intake interface II 33, compressed air sucks the micro lubricating in insulation lubricating cup 13 for precision micro-lubricating pump 18 all the way for this Liquid can be described as imbibition gas circuit.The frequency for entering compressed air in precision micro-lubricating pump 18 by the control of impulse controller 25, into And the frequency of 18 sucking lubricating fluid of precision micro-lubricating pump is controlled, it can pass through after micro lubricating liquid sucking precision micro-lubricating pump 18 Flow quantity adjusting knob 29 adjusts the discharge rate of the every subpulse of lubricating fluid, through defeated by liquid conveyor chamber 41 after the discharge of micro lubricating liquid It send to gas-liquid mixed room 50.The lubrication that another way compressed air is arranged by tracheae III 28 and 18 lower section of precision micro-lubricating pump Pump intake interface I 32 is connected, and compressed air can adjust output tolerance, the pressure after adjusting by flow adjustment knob 19 all the way for this Contracting air is delivered in nozzle body via gas conveyor chamber 39 for conveying atomization micro lubricating liquid.It is coated on the inside of insulated oil tube 38 There is hydrophobic oleophobic carbon nano coating 40, due to that the gas molecule of absorption can be made to be stabilized on the surface of nano-scale indentation, institute It to be equivalent to one layer of stable gas membrane in macro surface, contact oil and water can not with material surface directly, from And make material surface that extraordinary double thin (oleophobic is hydrophobic) characteristics be presented, therefore can effectively avoid the problem that oil pipe blocking.

Micro lubricating liquid is entered in gas-liquid mixed room 50 by liquid conveyor chamber 41, and compressed air passes through gas conveyor chamber 39 enter in air storage chamber 48, are further entered in gas-liquid mixed room 50 by rotation direction stomata 49.Since rotation direction stomata 49 is Along 50 outer wall array arrangement of gas-liquid mixed room, inlet axis and 50 inner cavity wall surface of gas-liquid mixed room are tangent, and compressed air flows through rotation Gas-liquid mixed room 50 is entered with tangential velocity v to stomata 49.Compressed air enters gas by multiple rotation direction stomatas 49 simultaneously In liquid mixing chamber 50, directional velocity is non-intersecting with axial centre, therefore there are a momentum to axial centre for the air-flow entered Square promotes air-flow to rotate in gas-liquid mixed room 50 around axial centre, while promoting to jet expansion direction, so that nanometer be driven to flow Body rotates to form vortex.The formation of the vortex mixes micro lubricating liquid adequately with compressed air, also results in simultaneously The formation of sinuous flow.Micro lubricating liquid and compressed air are passed through after being sufficiently mixed by 52 two parts of accelerating chamber 51 and jet expansion, this Mixed flow is accelerated and is sprawled in the process, and lubricating fluid is in nozzle and liquid film or liquidus are usually pullled into exit, is finally existed The external force such as aerodynamic force and electrostatic force are made of lower finished breaking into drop.The formation of sinuous flow is unfavorable for micro- in conventional electrostatic nozzle Amount lubricating fluid is uniformly sprawled, and lubricating fluid and compressed air become extremely unstable in the case where the mixing of rotation direction air-flow is used, speed It is larger to be unevenly distributed turbulence intensity, accelerated room 51 after accelerating it is this show become particularly evident, eventually lead to nozzle ejection Droplets size distribution it is also very uneven, larger be also unfavorable for being formed controllably transporting after drop since the liquidus of formation fluctuates. In order to solve this problem, this programme accelerating chamber internal surface that a series of micro-bulges 57, shape and distribution is arranged as described above, A kind of a kind of charged nozzle comprising micro- texture is made.

Yong ' s equation and Wenzel model can be passed through, analyze the beneficial effect of the charged nozzle of micro- texture.Liquid is solid Contact angle on body surface face, which is mutually balanced by solid, air-liquid interface interfacial surface tension, to be determined, it is proper that final equilibrium state makes It is that gross energy tends to be minimum, therefore liquid is typically in stable state or metastable state on a solid surface.Usual drop is in smooth planar Contact angle on the surface of solids can be indicated with Yong ' s equation:

γ_sv=γ_sl+γ_lvcosθ (1)

That is:

Wherein γ_sv、γ_sl、γ_lvRespectively solid-gas, the surface tension of solid-liquid, liquid-vapor interface；θ is equilibrium contact angle, Alternatively referred to as intrinsic contact angle.

Think to be difficult to measure by the actual contact angle that a drop is placed on a rough surface in Wenzel model, tests institute Only its apparent contact angle of measurement, can use θ_rIt indicates.If the liquid on the surface of solids can fill up on coarse solids surface Pit, then referred to as wet contact.At this time under the conditions of constant temperature and pressure, since the variation at interface causes the variation of system free energy can table Show as follows:

d_E=r (γ_sv-γ_sl)dx+γ_lvdxcosθ_r (3)

Wherein, d_EFor contact line have an infinitesimal dx it is mobile when required gross energy, the d in equilibrium state_E=0, in turn Relationship between available apparent contact angle and assertive evidence contact angle is as follows:

cosθ_r=r (γ_sv-γ_sl)/γ_lv (4)

Wherein r is roughness factor, refers to the ratio between actual solid-liquid interface contact area and apparent contact area (r >=1). Formula (2) and formula (4) are compared and can be obtained:

cosθ_r=rcos θ (5)

Wenzel model shows that the presence of rough surface makes the contact area of actually solid-liquid be greater than apparent contact surface Product, is then geometrically enhancing lyophobicity or lyophily.When 90 ° of θ <, θ_rIt is reduced with the increase of surface roughness, Surface becomes more lyophily.When 90 ° of θ >, θ_rBecome larger with the increase of surface roughness, surface becomes more lyophoby.This programme Used nozzle core 45 is that metal conductive materials are usually red copper or stainless steel, these material surfaces are that oleophylic class surface is worked as 90 ° of θ <.The relatively smooth r value of conventional spout inner surface is smaller, and a series of micro-bulges are arranged in 51 inner surface of accelerating chamber in this programme 57, this, which can undoubtedly greatly increase r value, makes r much larger than 1, that is, considerably increases the oleophylic performance of 51 inner surface of accelerating chamber.Scheme institute Being evenly distributed on unit area with hexagonal prisms micro-bulge is L²Surface on, hexagonal prisms micro-bulge side length be c, a height of h, distribution Number n can determine that the roughness factor r on unit area can be calculated as follows at this time according to η and acceleration chamber internal surface real area:

According to formula (6) it can be seen that can realize roughness factor by the number n, side length c and height h of setting micro-bulge The active designs of r.

The oleophylic performance of 51 inner surface of accelerating chamber can effectively adsorb the micro lubricating liquid flowed out out of mixing chamber 50, improve The resistance of motion of micro lubricating liquid, and uniform oil film is formed under the effect of pullling of compressed air, greatly reduce jet stream Disturbance improves the uniformity of liquid film liquidus, so that finally formed droplet distribution is also more uniform, motion path It is more controllable.A series of micro-bulges 57 of 51 inner surface of accelerating chamber setting also significantly increase nozzle core 45 and micro lubricating The contact area of liquid has since preferably lipophilicity also considerably increases the time that micro lubricating liquid is in contact with it for it More preferably charging performance.

Opening the switch of adjustable high voltage D. C 9 is that nozzle core 45 is powered, and nozzle core 45 with micro lubricating liquid by contacting Charged to its, it is uniform small droplets that micro lubricating liquid is atomized under the action of electrostatic force aerodynamic force, and then controlled delivery is extremely cut Realize cold-zone lubricating function in area.The specific atomization mechanism of micro lubricating liquid can be expressed as follows:

Electrostatic atomization is that electrostatic force overcomes surface tension of liquid, so as to cause liquid crushing be mist droplet the phenomenon that.Spray Mouth core 45 is contacted with micro lubricating liquid makes liquid surface with a large amount of homophilic charge, increases liquid surface activity, makes surface layer Molecule generation significantly aligns, and reduces surface tension.In the case where liquid volume is constant, as quantities of charge increases Add, surface tension can be gradually reduced.When the size of surface tension is not enough to fetter liquid, liquid will be in surface homophilic charge Between repulsive interaction and external force caused by be broken for fine mist under liquid surface disturbances.

When there is higher relative velocity between drop and the gas of surrounding, then the division of drop is by Pneumatic pressure, surface What tension and viscous force controlled.Liquid lower for viscosity, the broken of drop are mainly determined by Pneumatic pressure and surface tension. Pneumatic pressure suffered by liquid film, liquidus and big drop is 0.5 ρ_gΔV², wherein ρ_gIt is gas density, Δ V is gas-liquid relative velocity. However, the cohesive force that surface tension generates will hinder liquid to deform broken, cohesive force can be expressed as 4 σ/D, and σ is liquid Intrinsic surface tension, D are initial drop diameter.

When liquid-drop diameter reduces, cohesive force is increased, when both tensile stresses caused by cohesive force and Pneumatic pressure balance, liquid Drop keeps stablizing, if the two cannot offset each other, drop will deform even broken.It is produced according to the aerodynamic force acted on drop Both the cohesive force that raw tensile stress and surface tension generate balances this principle, it can be deduced that a dimensionless number:

To known to when Weber number is greater than 8, drop force unbalance deforms.According further to (7) can find out with The corresponding maximum steady state liquid-drop diameter of Δ V:

Under the action of Coulomb repulsion, surface tension dies down charged droplet, the surface tension value after dying down are as follows:

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 Out when carried charge q increases, surface tension just declines, it can thus be appreciated that droplet surface is charged to be helped to be atomized.

The We of charged droplet can be indicated at this time are as follows:

By (10) as it can be seen that broken and gas-liquid relative velocity, the gas-liquid physical parameter of charged droplet and being filled in high-speed flow Electric field has close relationship.In addition, on lotus after electrostatic, We number increases, liquid table if drop reaches stable state in the gas flow Face tension reduces, and is insufficiently resistant to Pneumatic pressure, further occurrence is deformed, is broken by drop, so identical in gas-liquid parameter In the case of, mist droplet particle size is smaller after electrostatic on lotus.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.

The charged carrying capacity calculation formula of contact is as follows:

Wherein, q_tTo divide preceding big droplets amount, ε₀, ε be respectively air and micro lubricating oil dielectric constant, r₁ ²For Big droplet radius before dividing, E₀For space electrical field, q_maxIt is saturated carrying capacity for drop, τ is electrification time constant, and t is charged Time.It is to improve electric field strength or increase charged time, micro-bulge 57 according to the visible effective ways for improving carrying capacity of formula 11 Setting can effectively increase charged time t.Suo Taier average diameter d of the micro lubricating liquid after Charged atomization₃₂Following formula can be passed through It calculates:

Wherein, k₁For coefficient relevant to nozzle arrangements, k₂For coefficient relevant to carrying capacity qt, | u_l-u_g| for liquid with The relative velocity absolute value of gas, μ_lFor the dynamic viscosity coefficient of liquid, σ is surface tension of liquid, ρ_lFor fluid density, Q_lFor Fluid flow, Q_gFor gas flow.The size droplet diameter and nozzle arrangements formed from the visible Charged atomization of formula (12), liquid ginseng Number, gas parameter are directly related.

The droplet sprayed from nozzle, accelerates under the action of aerodynamic force and electric field force to workpiece, in the work of electric field force With lower displacement, its is made the maximum amount of to be covered in workpiece surface.There is " electrostatic is encircled " effect in electrostatic field, therefore works as mist Drop and nanoparticle to workpiece motion s be to be easier to enter workpiece at certain roughness depression in the surface, to expand phase To area coverage, preferably lubrication and heat exchange can be played the role of.

According to Figure 14 as can be seen that adjustable high voltage D. C 37 is by self-maintained circuit, power amplification circuit, high frequency arteries and veins Rush booster, voltage doubling rectifing circuit, direct-flow voltage regulation unit V1 and direct-flow voltage regulation unit V2 and constant current automatic control circuit composition.Its Working principle is input termination AC power source, and direct-flow voltage regulation unit V1 and direct-flow voltage regulation unit V2 provide DC voltage.Direct current is steady Press operating voltage of the unit V1 as self-maintained circuit.Direct-flow voltage regulation unit V2 is the main energy sources of power conversion, high frequency arteries and veins It rushes booster and rectifies acquisition high-pressure electrostatic through voltage doubling rectifing circuit, main pulse signal is obtained by self-maintained circuit, put through power After big circuit amplification, under the boosting of high-frequency impulse booster, final output high-voltage signal is exported through voltage doubling rectifing circuit High direct voltage.

The characteristics of power supply is to generate higher electrostatic high-pressure, and supply current is small, is usually no more than 500 μ A.It is permanent It flows automatic control circuit automatically to sample the electrostatic operating current of voltage doubling rectifing circuit, in constant current, when workload normally adds When big, the rising of operating current will not be caused.When outer load is more than to allow electric current, self-maintained circuit stops shaking, and high pressure is cut Only, this characteristic is reliable to the safety of operator, once close to or touching high-voltage end, caused shock current is very micro- It is weak, while High voltage output is truncated, so will not be in peril of one's life.

Embodiment 6

The controllable jet micro lubricating grinding system of the present embodiment is ground with the controllable jet micro lubricating in embodiment 5 System structure difference is: electrostatic atomiser structure is different.

The controllable jet micro lubricating grinding system of the present embodiment includes such as Fig. 2, Fig. 3, Fig. 4 and Fig. 7 (a) and Fig. 7 (b) Shown in the compound micro- texture electrostatic atomiser of second level.

The specific work process of the controllable jet micro lubricating grinding system of the present embodiment and the specific works mistake of embodiment 5 Journey is consistent, and difference is:

The relatively smooth r value of conventional spout inner surface is smaller, and a series of dimplings are arranged in 51 inner surface of accelerating chamber in this programme Body 57, micro-bulge 57 is that second level composite construction is made of level-one micro-bulge 65 and second level micro-bulge 66, compared to individual dimpling Body structure composite micro-bulge, which undoubtedly can larger increase r value, makes r much larger than 1, to considerably increase 51 inner surface of accelerating chamber Oleophylic performance.The diameter that level-one micro-bulge 65 used in scheme and second level micro-bulge 66 are constituted is respectively d1 and d2, height be respectively h and H ', 65 quantity n of level-one micro-bulge₁With 66 quantity n of second level micro-bulge₂If the 51 inner surface gross area of accelerating chamber be S, roughness because Sub- r can calculate as follows:

According to formula (13) it can be seen that passing through level-one micro-bulge 65 several n of setting₁Diameter d₁Height h, second level micro-bulge 66 Number n₁Diameter d₁Height h ', it can be achieved that roughness factor r active designs.

Embodiment 7

The controllable jet micro lubricating grinding system of the present embodiment is ground with the controllable jet micro lubricating in embodiment 5 System structure difference is: electrostatic atomiser structure is different.

The controllable jet micro lubricating grinding system of the present embodiment includes such as Fig. 2, Fig. 3, Fig. 4 and Fig. 8 (a) and Fig. 8 (b) Shown in noise reduction increase resistance electrostatic atomiser.

The specific work process of the controllable jet micro lubricating grinding system of the present embodiment and the specific works mistake of embodiment 5 Journey is consistent, and difference is:

Wenzel model shows that the presence of rough surface makes the contact area of actually solid-liquid be greater than apparent contact surface Product, is then geometrically enhancing lyophobicity or lyophily.When 90 ° of θ <, θ_rIt is reduced with the increase of surface roughness, Surface becomes more lyophily.When 90 ° of θ >, θ_rBecome larger with the increase of surface roughness, surface becomes more lyophoby.This programme Used nozzle core 45 is that metal conductive materials are usually red copper or stainless steel, these material surfaces are that oleophylic class surface is worked as 90 ° of θ <.The relatively smooth r value of conventional spout inner surface is smaller, and a series of micro-bulges are arranged in 51 inner surface of accelerating chamber in this programme 57, this, which can undoubtedly greatly increase r value, makes r much larger than 1, that is, considerably increases the oleophylic performance of 51 inner surface of accelerating chamber.This implementation Pricker bar shape micro-bulge 57 used in example, which is evenly distributed on, to be accelerated on chamber internal surface, a length of a in top, and following a length of b, a height of h can bases η and accelerating chamber inner surface area determine that the roughness factor r on unit area can be calculated as follows at this time:

According to formula (14) it can be seen that can be realized by the number n, upper side length a and height h of setting micro-bulge 57 coarse Spend the active designs of factor r.

The oleophylic performance of 51 inner surface of accelerating chamber can effectively adsorb the micro lubricating liquid flowed out out of mixing chamber 50, improve The resistance of motion of micro lubricating liquid, and uniform oil film is formed under the effect of pullling of compressed air, greatly reduce jet stream Disturbance improves the uniformity of liquid film liquidus, so that finally formed droplet distribution is also more uniform, motion path It is more controllable.A series of micro-bulges 57 of 51 inner surface of accelerating chamber setting also significantly increase nozzle core 45 and micro lubricating The contact area of liquid has since preferably lipophilicity also considerably increases the time that micro lubricating liquid is in contact with it for it More preferably charging performance.Meanwhile the pricker bar groove formed between pricker bar shape micro-bulge can effectively reduce noise, reduce Harm to operator's hearing health.

Embodiment 8

The controllable jet micro lubricating grinding system of the present embodiment is ground with the controllable jet micro lubricating in embodiment 5 System structure difference is: electrostatic atomiser structure is different.

The controllable jet micro lubricating grinding system of the present embodiment includes such as Fig. 2, Fig. 3, Fig. 4, Fig. 9 (a), Fig. 9 (b) and figure Gradual change asperity contact formula electrostatic atomiser shown in 10.

The specific work process of the controllable jet micro lubricating grinding system of the present embodiment and the specific works mistake of embodiment 5 Journey is consistent, and difference is:

Wenzel model shows that the presence of rough surface makes the contact area of actually solid-liquid be greater than apparent contact surface Product, is then geometrically enhancing lyophobicity or lyophily.When 90 ° of θ <, θ_rIt is reduced with the increase of surface roughness, Surface becomes more lyophily.When 90 ° of θ >, θ_rBecome larger with the increase of surface roughness, surface becomes more lyophoby.This programme Used nozzle core 45 is that metal conductive materials are usually red copper or stainless steel, these material surfaces are that oleophylic class surface is worked as 90 ° of θ <.The relatively smooth r value of conventional spout inner surface is smaller, and a series of transition types are arranged in 51 inner surface of accelerating chamber in this programme Micro-bulge 57, this, which can undoubtedly greatly increase r value, makes r much larger than 1, that is, considerably increases the oleophylic performance of 51 inner surface of accelerating chamber. It is L that hexagonal prisms micro-bulge used in scheme, which is evenly distributed on unit area,²Surface on, hexagonal prisms micro-bulge side length is c, minimum high For h, difference in height is Δ h, area ratio/occupancy ratio η, and vertical center is away from being b, 57 upper surface of micro-bulge and 51 inner surface of accelerating chamber folder Angle is β, and the roughness factor r on unit area can be calculated as follows at this time:

According to formula (15) it can be seen that passing through the area ratio/occupancy ratio η, side length c, height h of setting micro-bulge, difference in height Δ H, vertical center is away from b, it can be achieved that the active designs of roughness factor r.

The oleophylic performance of 51 inner surface of accelerating chamber can effectively adsorb the micro lubricating liquid flowed out out of mixing chamber 50, improve The resistance of motion of micro lubricating liquid.Movement of the micro lubricating liquid in accelerating chamber 51 can be made using transition type micro-bulge structure Resistance greatly reduces jet stream to small distribution, facilitating to form uniform oil film under the effect of pullling of compressed air greatly Disturbance improve the uniformity of liquid film liquidus so that finally formed droplet distribution is also more uniform, motion path Also more controllable.51 inner surface of accelerating chamber setting a series of transition type micro-bulges 57 also significantly increase nozzle core 45 with The contact area of micro lubricating liquid, since preferably lipophilicity also considerably increases the time that micro lubricating liquid is in contact with it for it, Therefore there is more preferably charging performance.

Although above-mentioned be described in conjunction with specific embodiment of the attached drawing to the disclosure, model not is protected to the disclosure The limitation enclosed, those skilled in the art should understand that, on the basis of the technical solution of the disclosure, those skilled in the art are not Need to make the creative labor the various modifications or changes that can be made still within the protection scope of the disclosure.

Claims (10)

1. a kind of micro- texture electrostatic atomiser characterized by comprising nozzle core is connected with top nozzle above the nozzle core Body；Free space is formed between the top nozzle body and nozzle core, is used to storing compressed air and decompression；Under the nozzle core Side is connected with lower nozzle body；Gas-liquid mixed room, accelerating chamber and jet expansion are disposed with inside nozzle core from top to bottom；It is described Accelerate uniformly to be placed with micro-bulge in chamber interior walls.

2. a kind of compound micro- texture electrostatic atomiser of second level characterized by comprising nozzle core, the top connection of the nozzle core There is top nozzle body；Free space is formed between the top nozzle body and nozzle core, is used to storing compressed air and decompression；The spray Lower nozzle body is connected with below mouth core；Gas-liquid mixed room, accelerating chamber and nozzle are disposed with inside nozzle core from top to bottom Outlet；Micro-bulge is uniformly placed in the acceleration chamber interior walls, the micro-bulge is made of level-one micro-bulge and second level micro-bulge, Second level micro-bulge is arranged on level-one micro-bulge.

3. a kind of noise reduction increases resistance electrostatic atomiser characterized by comprising nozzle core is connected with spray above the nozzle core Mouth body；Free space is formed between the top nozzle body and nozzle core, is used to storing compressed air and decompression；The nozzle core Lower section is connected with lower nozzle body；Gas-liquid mixed room, accelerating chamber and jet expansion are disposed with inside nozzle core from top to bottom；Institute It states and accelerates uniformly to be placed with micro-bulge in chamber interior walls, the micro-bulge is pricker bar shape, shape between any two pricker bar shape micro-bulge At pricker bar groove.

4. a kind of gradual change asperity contact formula electrostatic atomiser characterized by comprising nozzle core connects above the nozzle core It is connected to top nozzle body；Free space is formed between the top nozzle body and nozzle core, is used to storing compressed air and decompression；It is described Lower nozzle body is connected with below nozzle core；Gas-liquid mixed room, accelerating chamber and spray are disposed with inside nozzle core from top to bottom Mouth outlet；Micro-bulge is uniformly placed in the acceleration chamber interior walls, the micro-bulge uses the non-contour structure of transition type, i.e. dimpling Body height is gradually reduced along the jet stream direction of motion.

5. a kind of controllable jet micro lubricating grinding system characterized by comprising

Micro- texture electrostatic atomiser as described in claim 1；

Or

The compound micro- texture electrostatic atomiser of second level as claimed in claim 2；

Or

Noise reduction as claimed in claim 3 increases resistance electrostatic atomiser；

Or

Gradual change asperity contact formula electrostatic atomiser as claimed in claim 4.

6. controllable jet micro lubricating grinding system as claimed in claim 5, which is characterized in that further include:

Grinding machine part workbench, grinding machine part workbench top are provided with grinding wheel, are provided with wheel guard on the outside of the grinding wheel； Workpiece setting is between grinding machine part workbench and grinding wheel；Micro lubricating liquid delivery pipe, institute are fixed on the wheel guard The one end for stating micro lubricating liquid delivery pipe is connected with electrostatic atomiser, and the other end is connected with minimum quantity lubrication device；

The electrostatic atomiser is also electrically connected with adjustable high voltage D. C, and the adjustable high voltage D. C is also powered on workpiece and fills Set electrical connection；The workpiece power-up device is adsorbed in the non-processing surface of workpiece, the anode of workpiece and adjustable high voltage D. C Connection, to make electrostatic atomiser negative polarity, workpiece surface is positive polarity, and electric field is formed between electrostatic atomiser and workpiece, is micro- Amount lubrication drop controllably transports offer condition.

7. controllable jet micro lubricating grinding system as claimed in claim 5, which is characterized in that the accelerating chamber angle of throat α Between 5-20 °；The diameter of jet expansion is B, and the length of jet expansion is L, and L/B value is between 2 and 6；

Or/and

Non-return circle resettlement groove is provided with above nozzle core, cyclic annular non-return circle is fixedly bonded in non-return circle resettlement groove；

Or/and

Non-return circle resettlement groove is provided with above nozzle core, cyclic annular non-return circle is fixedly bonded in non-return circle resettlement groove, stops in ring-type The inverse above array that encloses is placed with several V₂O₅Nanofiber sheet, the V₂O₅Nanofiber sheet is pasted one week along cyclic annular non-return circle Annular center hole is covered；

Or/and

Rotation direction stomata is provided on nozzle core, rotation direction stomata is along gas-liquid mixed chamber outer wall array arrangement, inlet axis and gas-liquid Mixing chamber inner cavity wall surface is tangent, and compressed air flows through rotation direction stomata and enters gas-liquid mixed room with tangential velocity；

Or/and

It is provided with high-tension bus-bar interface on nozzle core, high-tension bus-bar is provided on lower nozzle body and picks out through-hole, high direct voltage electric wire It may pass through high-tension bus-bar and pick out through-hole and be connected with high-tension bus-bar interface, to power for nozzle core；

Or/and

Micro lubricating liquid delivery pipe outermost is insulation dragons and snakes pipe, is internally provided with insulated oil tube, and insulate dragons and snakes pipe and insulating oil Gas conveyor chamber is formed between pipe, is conveyed for atomizing air；Insulated oil tube internal coat has hydrophobic oleophobic carbon nano coating, together When inside formed liquid conveyor chamber；Atomizing air is supplied to electrostatic atomiser using coaxial form with micro lubricating liquid；

Or/and

The adjustable high voltage D. C includes AC power unit, the AC power unit and the first direct-flow voltage regulation unit and Second direct-flow voltage regulation unit is respectively connected with, and first direct-flow voltage regulation unit successively boosts with power amplification circuit and high-frequency impulse Device is connected, and the high-frequency impulse booster is connected with voltage doubling rectifing circuit, and the voltage doubling rectifing circuit and constant current automatically control electricity Road is connected, and the constant current automatic control circuit is connected with the second direct-flow voltage regulation unit；

Or/and

The workpiece power-up device includes insulation shell, and permanent magnet is provided in insulation shell, and weight lower part passes through insulation shell Center, holddown spring is provided between weight and insulation shell, when workpiece power-up device is close to the non-processing surface of workpiece When, permanent magnet can generate attraction with workpiece and compress holddown spring, while holddown spring provides reaction force, guarantees weight and work Part is closely coupled；

Or/and

The workpiece power-up device includes insulation shell, and permanent magnet is provided in insulation shell, and weight lower part passes through insulation shell Center, holddown spring is provided between weight and insulation shell, when workpiece power-up device is close to the non-processing surface of workpiece When, permanent magnet can generate attraction with workpiece and compress holddown spring, while holddown spring provides reaction force, guarantees weight and work Part is closely coupled；The weight tail portion is provided with split pin slot, and the split pin slot is used for insertion opening pin, to guarantee work When part power-up device is not with absorption of workpieces, fall off from insulation shell to prevent weight and holddown spring；

Or/and

The workpiece power-up device includes insulation shell, and permanent magnet is provided in insulation shell, and weight lower part passes through insulation shell Center, holddown spring is provided between weight and insulation shell, when workpiece power-up device is close to the non-processing surface of workpiece When, permanent magnet can generate attraction with workpiece and compress holddown spring, while holddown spring provides reaction force, guarantees weight and work Part is closely coupled；The weight tail portion is provided with split pin slot, and the split pin slot is used for insertion opening pin, to guarantee work When part power-up device is not with absorption of workpieces, fall off from insulation shell to prevent weight and holddown spring；The weight tail portion setting There is connecting ring, the connecting ring is connected by high direct voltage electric wire with adjustable high voltage D. C positive terminal.

8. controllable jet micro lubricating grinding system as claimed in claim 5, which is characterized in that the minimum quantity lubrication device, Include:

Precision micro-lubricating pump, the precision micro-lubricating, which pumps, is provided with precision micro-lubricating pump inlet opening, and the precision is micro- Lubricating pump inlet opening connection insulation lubricating cup is measured, the insulation lubricating cup is used to pump feed flow for precision micro-lubricating；The precise micro Imbibition gas circuit and atomization gas circuit are also communicated on lubricating pump, the imbibition gas circuit and atomization gas circuit are connected with compressed air gas source It is logical；The imbibition gas circuit is used to control the micro lubricating liquid in precision micro-lubricating pump sucking insulation lubricating cup；The atomization gas circuit Micro lubricating liquid is atomized for conveying.

9. controllable jet micro lubricating grinding system as claimed in claim 8, which is characterized in that one end of the atomization gas circuit It is connected with lubricating pump first into interface, the other end is connected with the first interface of three-way valve；One end of the imbibition gas circuit with Lubricating pump second enters interface and is connected, and the other end is connected with the second interface of three-way valve；The third interface of three-way valve passes through Pipeline is connected with compressed air gas source；

Or/and

One end of the atomization gas circuit is connected with lubricating pump first into interface, the first interface phase of the other end and three-way valve Even；One end of the imbibition gas circuit is connected with lubricating pump second into interface, and the other end is connected with the second interface of three-way valve； The third interface of three-way valve is connected by pipeline with compressed air gas source；The third interface and compressed air of the three-way valve Filtering pressure regulator valve is additionally provided on pipeline between gas source, the filtering pressure regulator valve is connected with solenoid valve, solenoid valve and pulse control Device processed is connected, and has controlled the outlet frequency of compressed air since on-off frequency of the impulse controller for controlling solenoid valve, and then control The frequency of precision micro-lubricating pump sucking lubricating fluid processed；

Or and

Throughput adjusting knob and flow quantity adjusting knob are provided on precision micro-lubricating pump, throughput adjusting knob is for adjusting The flow of section atomization gas circuit compressed air, flow quantity adjusting knob pump the imbibition in each pulse for adjustment precision micro lubricating Amount.

10. controllable jet micro lubricating grinding system as claimed in claim 8, which is characterized in that the grinding machine part work Insulating sheet material is covered on platform；

Or and

The side of the wheel guard is adsorbed with magnetic suction disc, and micro lubricating liquid delivery pipe is fixed on magnetic suction disc；

Or and

The quantity of precision micro-lubricating pump is two groups, and two groups of precision micro-lubricating pumps are arranged in juxtaposition up and down.