CN114458931A - Micro-lubricating device - Google Patents

Micro-lubricating device Download PDF

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Publication number
CN114458931A
CN114458931A CN202210016667.5A CN202210016667A CN114458931A CN 114458931 A CN114458931 A CN 114458931A CN 202210016667 A CN202210016667 A CN 202210016667A CN 114458931 A CN114458931 A CN 114458931A
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China
Prior art keywords
pipeline
air
outlet
atomizing chamber
nozzle
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CN202210016667.5A
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Chinese (zh)
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CN114458931B (en
Inventor
卢琨
吴淑晶
张�诚
周舒
谷顾全
张卜鑫
张烨锴
朱大伟
孙鹏飞
王大中
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Shanghai University of Engineering Science
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Shanghai University of Engineering Science
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Publication of CN114458931A publication Critical patent/CN114458931A/en
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Publication of CN114458931B publication Critical patent/CN114458931B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
    • F16N7/32—Mist lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
    • F16N7/32—Mist lubrication
    • F16N7/34—Atomising devices for oil
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention relates to a trace lubrication device, which comprises a nozzle, a high-pressure air conveying device, a lubricating oil conveying device and a high-pressure ionized air conveying device, wherein the nozzle is arranged on the high-pressure air conveying device; a primary atomizing chamber, a secondary atomizing chamber, an air passage alpha, an air passage beta and a liquid passage are arranged in the nozzle; an inlet of the primary atomizing chamber is simultaneously connected with an air passage alpha and a liquid channel, the fluid sprayed from the air passage alpha and the fluid sprayed from the liquid channel form an angle of 30-50 degrees, the air passage alpha is connected with an outlet of the high-pressure air conveying device, and the liquid channel is connected with an outlet of the lubricating oil conveying device; the inlet of the secondary atomizing chamber is connected with the air passage beta and the outlet of the primary atomizing chamber, the fluid sprayed out of the air passage beta and the fluid sprayed out of the outlet of the primary atomizing chamber form 90 degrees, the air passage beta is connected with the outlet of the high-pressure ionized air conveying device, and the outlet of the secondary atomizing chamber is connected with the outlet of the nozzle. According to the invention, the lubricating oil is atomized for multiple times, so that the atomization degree is improved, and the lubricating effect is further improved.

Description

Micro-lubricating device
Technical Field
The invention belongs to the technical field of lubricating devices, and relates to a minimal quantity lubricating device.
Background
The traditional electrostatic atomization device generally comprises an electrostatic generation device, a liquid supply device, a gas-liquid electric delivery pipe, a charging device, a nozzle and the like, wherein the traditional electrostatic atomization device has certain potential danger or instability according to different charging modes, a high-voltage electrode or a high-voltage electrostatic ring is arranged at an outlet of the nozzle, liquid drops sprayed by the traditional electrostatic atomization device are negatively charged, a workpiece is connected with a positive electrode, and lubricating oil liquid drops can generate a good adsorption effect on the surface of the workpiece under the action of electrostatic force.
Researches show that along with the increase of the spraying distance in the traditional electrostatic atomization process, liquid drops are continuously discharged in the movement process, the electrostatic repulsion among the liquid drops is reduced, the collision and agglomeration probability is increased, and the large-particle-size distribution and the small-particle-size distribution of the traditional electrostatic atomization are increased.
Studies have also shown that charged droplet particles are affected by many factors, and may break down without reaching the Rayleigh limit. The Shrimpton accurately measures the breaking limit of charged liquid droplet particles, and the result shows that the charged liquid droplet can be broken when the charged amount of the tiny liquid droplet does not reach the Rayleigh limit, the charged amount only needs to be 70% -80% of the Rayleigh limit, and when the flow of a gas-liquid path is adjusted to keep the gas-liquid ratio to be more than 0.1, the charged amount of the liquid droplet particles in an atomizing area between a nozzle and a workpiece can break only when the gas-liquid ratio is kept to be 55% of the Rayleigh limit, namely, the liquid droplet can break after the electric field strength reaches a certain degree. After the charged liquid drops are crushed once in the atomization area of the traditional electrostatic atomization, the charged quantity is lost, and the liquid drops cannot be crushed again, so that the charged thinning effect of the liquid drops of the traditional electrostatic atomization is limited.
The methods of droplet charging in the conventional electrostatic atomization technology mainly include induction charging, contact charging and corona charging. Regarding induction charge and corona charge, because electrode rings of the induction charge and the corona charge are exposed in an external environment, spark discharge is easy to occur, and when the operation time of a nozzle is too long or the humidity of the operation environment is high, the surfaces of the electrode rings are subjected to discharge breakdown due to entrainment of condensed water drops, so that the system cannot stably operate; with respect to contact charging, the high-voltage negative electrode is exposed, which poses a certain risk to the operator.
Aiming at the problems, the invention designs a novel electrostatic atomization nozzle and a trace lubrication system with stronger atomization capability, stronger lubrication capability and higher safety and stability by adopting a charging method of mixing ionized air and liquid mist.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a minimal quantity lubrication device;
in order to achieve the purpose, the invention adopts the following scheme:
a micro-lubricating device comprises a nozzle, a high-pressure air conveying device, a lubricating oil conveying device and a high-pressure ionized air conveying device; a primary atomizing chamber, a secondary atomizing chamber, an air passage alpha, an air passage beta and a liquid passage are arranged in the nozzle;
the inlet of the primary atomizing chamber is simultaneously connected with the air passage alpha and the liquid passage, the fluid sprayed from the air passage alpha and the fluid sprayed from the liquid passage form a 30-50 degree angle, the momentum impact caused by the collision of a gas phase and a liquid phase can be reduced, the primary atomizing chamber stably operates, the problem of intermittent jet flow is avoided, the air passage alpha is connected with the outlet of the high-pressure air conveying device, and the liquid passage is connected with the outlet of the lubricating oil conveying device;
the inlet of the secondary atomizing chamber is connected with the outlets of the air passage beta and the primary atomizing chamber, the fluid sprayed from the air passage beta and the fluid sprayed from the outlet of the primary atomizing chamber form 90 degrees, so that the speed direction of the liquid mist is changed, ionized air and the primary atomized liquid mist are fully mixed, the air passage beta is connected with the outlet of the high-pressure ionized air conveying device, and the outlet of the secondary atomizing chamber is connected with the outlet of the nozzle.
One of the technical problems to be solved by the invention is as follows: in the traditional electrostatic atomization process, liquid drops are charged through a contact type, an induction type and a corona, but the liquid drops in the contact type cannot be charged after leaving an electrode, and the induction type and the corona can only be charged around an electrode ring, so that the liquid drops are continuously discharged in the motion process along with the increase of the spray distance, the electrostatic repulsion among the liquid drops is reduced, the collision coagulation probability is increased, and the large-particle-size distribution and the small-particle-size distribution of the traditional electrostatic atomization are increased; after the charged liquid drops are crushed once in the atomization area of the traditional electrostatic atomization, the charged quantity is lost, and the liquid drops cannot be crushed again, so that the charged thinning effect of the liquid drops of the traditional electrostatic atomization is limited. According to the invention, ionized air continuously charges the droplets after leaving the nozzle and reaches the surface of the workpiece, the electrostatic repulsion among the droplets is maintained unchanged or increased, the collision and agglomeration probability is reduced, the number of the droplets with large particle size is relatively reduced, the particle size distribution is more concentrated, the size uniformity of the charged atomized droplets is improved, and the problems are effectively solved.
As a preferred technical scheme:
according to the minimal quantity lubrication device, the primary atomization chamber is a cylindrical cavity with the diameter of 3-6 mm and the height of 8-12 mm, and the secondary atomization chamber is a cylindrical cavity with the diameter of 10-20 mm and the height of 20-30 mm; the diameter of the outlet of the nozzle is 0.5-1 mm, so that the required charge-to-mass ratio and particle size of the fog drops are ensured.
The micro-lubricating device comprises a nozzle, a lubricating device and a lubricating device, wherein the nozzle is composed of a vertical section I and an L-shaped bent section, and the L-shaped bent section is composed of a horizontal section and a vertical section II; the upper part of the vertical section I is connected with the L-shaped bent section into a U shape; the first-stage atomizing chamber is arranged in the horizontal section of the L-shaped bending section, and the second-stage atomizing chamber is arranged in the vertical section I.
According to the minimal quantity lubrication device, the high-pressure air conveying device is formed by sequentially connecting the air filter m, the pipeline I, the air pump p, the pipeline II and the pipeline III, and the outlet of the pipeline III is the outlet of the high-pressure air conveying device.
According to the micro-lubricating device, the high-pressure ionized air conveying device is composed of the high-pressure negative ion generator, the air filter n, the pipeline a, the air pump q, the pipeline b, the pipeline c, the air ionization chamber and the pipeline d which are sequentially connected, the high-pressure negative ion generator is connected with the air ionization chamber, air is ionized through the high-pressure negative ion generator, liquid mist is charged through ionized air, direct contact between a high-pressure electrode and the liquid mist is avoided, and therefore safety is improved. The second technical problem to be solved by the invention is as follows: the high-voltage electrode is arranged in the air ionization chamber, so that the safety problem of the traditional contact type charged electrostatic atomization technology is solved, ionized air is conveyed into the atomization chamber of the nozzle through the insulating tube, the liquid drops can be stably charged, and the stability problem of the traditional induction and corona charged electrostatic atomization technology is solved.
In the minimal quantity lubrication device, the air filter m and the air filter n are the same air filter; the pipeline I and the pipeline a are the same pipeline; the pipeline II and the pipeline b are the same pipeline; the air pump p and the air pump q are the same air pump.
According to the micro-lubricating device, the pipeline III and the pipeline c are respectively provided with the gas flow meter for observing the pressure of the high-pressure air entering the nozzle in real time, and the manual gas flow regulating valves are respectively arranged for regulating the pressure of two paths of air entering the nozzle in real time according to requirements so as to control the gas-liquid ratio of the oil mist mixture in the nozzle, the manual gas flow regulating valves are positioned between the gas flow meters and the air pump, and the flow q of the pipeline IIIBThe setting range is 80-90L/h, and the flow q of the pipeline cCThe setting range is 40-50L/h.
The lubricating oil delivery device is formed by sequentially connecting an oil storage tank, a first pipeline, a micro pump and a second pipeline, wherein the oil storage tank is positioned above the side of the nozzle, the micro pump is positioned below the side of the nozzle, and the outlet of the second pipeline is the outlet of the lubricating oil delivery device.
A minimal quantity of lubricating package as described aboveA precise oil quantity adjusting knob is arranged on the first pipeline; the second pipeline is a universal bamboo joint pipe, a liquid flowmeter is arranged on the second pipeline, and the flow q of the second pipelineAThe setting range is 5-20 mL/h.
Advantageous effects
(1) According to the micro-lubricating device, the unique nozzle structure is designed, lubricating oil is atomized for many times, the atomization degree is improved, the particle size distribution is more concentrated in a 10-20 mu m range (the particle size distribution in the prior art is concentrated in a 30-40 mu m range), the average diameter of liquid drops is reduced from 20-30 mu m to 10-20 mu m, the lubricating effect is further improved, ionized air is used for carrying out electrostatic atomization on liquid mist, a high-voltage electrostatic ring is not adopted, and a high-voltage negative electrode is not in direct contact with lubricating liquid, so that the safety and the stability of the device are higher;
(2) according to the micro-lubricating device, when the micro-lubricating device is used, a large number of oxygen ions in ionized air can generate oxidation reaction with the surfaces of a cutter and a workpiece to form an oxidation layer, so that certain functions of abrasion resistance and wear reduction are achieved, and the purpose of protecting the cutter is further achieved;
(3) when the micro-lubricating device is used, after charged droplets in an atomizing area are crushed once, the charge quantity of the droplets is lost, ionized air still contains a large amount of free electrons and negative ions after the ionized air charges the droplets in the atomizing area, after the ionized air leaves a nozzle, the ionized air charges the droplets, part of the droplets can be subjected to Rayleigh crushing again, although part of the droplets do not reach the Rayleigh limit to be crushed, the probability of aggregation is greatly reduced due to the increase of electrostatic repulsion after the charge quantity is increased, the electrostatic repulsion among the droplets is kept unchanged or increased, the probability of collision and aggregation is reduced, the number of the droplets with large particle diameters is relatively small, the particle size spectrum peak shape is gradually changed from steep to the peak of the particle size spectrum through experimental data, the particle size spectrum peak appears at 10-20 mu m, the particle size distribution is more concentrated, and the size uniformity of the charged atomized droplets is improved, compared with the traditional electrostatic atomization trace lubrication system, the system has the advantages that the number of small liquid drops entering the surface of the workpiece is increased, and the lubrication capability is further improved;
(4) the ionized air adopted by the invention can continuously charge the charged liquid drops after the charged liquid drops leave the nozzle and enter the electrostatic atomization zone, and the particles of the partially charged liquid drops in the electrostatic atomization zone can break through the limit again to be broken into liquid drops with smaller size, thereby realizing the purpose of smaller average particle size.
Drawings
FIG. 1 is a front view of a minimal quantity lubrication device according to the present invention;
FIG. 2 is a three-dimensional frame view of a minimal quantity lubrication device according to the present invention;
FIG. 3 is an enlarged three-dimensional view of a nozzle of a minimal quantity lubrication apparatus according to the present invention;
the device comprises an oil storage tank 1, a case 2, an air filter 3, a gas flowmeter 4, an air pump 5, a manual gas flow regulating valve 6, a high-pressure negative ion generator 7, a micropump 8, a liquid flowmeter 9, a nozzle 11, a universal bamboo joint pipe 12, a polytetrafluoroethylene insulating pipe 13, an air ionization chamber 14, a primary atomizing chamber 15 and a secondary atomizing chamber 16.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A minimal quantity lubrication device is shown in figures 1-2 and comprises a machine case 2, a nozzle 11, a high-pressure air conveying device, a lubricating oil conveying device and a high-pressure ionized air conveying device;
the nozzle 11 is composed of a vertical section I and an L-shaped bending section, and the L-shaped bending section is composed of a horizontal section and a vertical section II; the upper part of the vertical section I is connected with the L-shaped bent section into a U shape; a primary atomizing chamber, a secondary atomizing chamber, an air passage alpha, an air passage beta and a liquid passage are arranged in the nozzle 11; the primary atomizing chamber is a cylindrical cavity with the diameter of 3-6 mm and the height of 8-12 mm, the primary atomizing chamber is arranged in the horizontal section of the L-shaped bent section, the inlet of the primary atomizing chamber is simultaneously connected with the air channel alpha and the liquid channel, and the fluid sprayed out of the air channel alpha and the fluid sprayed out of the liquid channel form an angle of 30-50 degrees; the secondary atomizing chamber is a cylindrical cavity with the diameter of 10-20 mm and the height of 20-30 mm, the secondary atomizing chamber is arranged in the vertical section I, the inlet of the secondary atomizing chamber is simultaneously connected with the air passage beta and the outlet of the primary atomizing chamber, the fluid sprayed out of the air passage beta and the fluid sprayed out of the outlet of the primary atomizing chamber form 90 degrees, the outlet of the secondary atomizing chamber is connected with the outlet of the nozzle 11, and the diameter of the outlet of the nozzle 11 is 0.5-1 mm;
the high-pressure air conveying device is formed by sequentially connecting an air filter m, a pipeline I, an air pump p, a pipeline II and a pipeline III, the outlet of the pipeline III is the outlet of the high-pressure air conveying device, and the air passage alpha is connected with the outlet of the high-pressure air conveying device;
the high-pressure ionized air conveying device consists of a high-pressure negative ion generator 7 (with the model of Sidike SAT-10 high-power high-pressure ion generator) and an air filter n, a pipeline a, an air pump q, a pipeline b, a pipeline c, an air ionization chamber 14 and a pipeline d which are sequentially connected, wherein the high-pressure negative ion generator 7 is connected with the air ionization chamber 14, the outlet of the pipeline d is the outlet of the high-pressure ionized air conveying device, the pipeline d is a polytetrafluoroethylene insulating tube 13, and an air passage beta is connected with the outlet of the high-pressure ionized air conveying device;
the air filter m and the air filter n are the same air filter 3; the pipeline I and the pipeline a are the same pipeline; the pipeline II and the pipeline b are the same pipeline; the air pump p and the air pump q are the same air pump 5;
the pipeline III and the pipeline c are respectively provided with a gas flow meter 4 and a manual gas flow regulating valve 6, the manual gas flow regulating valve 6 is positioned between the gas flow meter 4 and the gas pump 5, and the flow q of the pipeline IIIBThe setting range is 80-90L/h, and the flow q of the pipeline cCThe setting range is 40-50L/h;
the lubricating oil conveying device is formed by sequentially connecting an oil storage tank 1, a first pipeline, a micro pump 8 and a second pipeline, wherein the oil storage tank 1 is positioned above the side of the nozzle 11, the micro pump 8 is positioned below the side of the nozzle 11, the outlet of the second pipeline is the outlet of the lubricating oil conveying device, and the liquid channel is connected with the outlet of the lubricating oil conveying device;
the first pipeline is provided with a fine powderA fuel-tight quantity adjusting knob; the second pipeline is a universal bamboo joint pipe 12, a liquid flowmeter 9 is arranged on the second pipeline, and the flow q of the second pipelineAThe setting range is 5-20 mL/h.
As shown in fig. 3, in a specific use process, the fluid ejected from the liquid channel is subjected to the power and the shearing force of the fluid ejected from the air channel α in the primary atomizing chamber to form a primary atomized gas-liquid mixture; ionized air obtained after passing through the air ionization chamber 14 enters along an air passage beta at the upper end of the secondary atomization chamber 16 and is fully mixed with aerial fog from the primary atomization chamber 15, so that liquid drops after primary atomization are charged to form charged aerial fog. The charged mist droplet group is finally ejected from the nozzle 11 outlet by secondary mechanical shearing.
According to the micro-lubricating device, the unique nozzle structure is designed, lubricating oil is atomized for multiple times, the atomization degree is improved, the particle size distribution is more concentrated in a 10-20 mu m range (the particle size distribution in the prior art is concentrated in a 30-40 mu m range), the average diameter of liquid drops is reduced from 20-30 mu m to 10-20 mu m, the lubricating effect is further improved, ionized air is used for carrying out electrostatic atomization on liquid mist, a high-voltage electrostatic ring is not adopted, a high-voltage negative electrode is not in direct contact with lubricating liquid, and the safety and the stability of the device are higher.
The particle size test method comprises the following steps: image recognition technology is adopted to detect two-dimensional plane particle size D of electrostatic atomization liquid drops on silicon wafer2D。D2DThe particle size of the atomized liquid drop in a real three-dimensional space is not represented, but the atomized liquid drop and the atomized liquid drop have a mutual conversion relationship. The study adopted the empirical formula between the two-dimensional plane diameter and the three-dimensional space diameter of the atomized droplets, which is proposed by the American scholars Kyung-Heepar, reference (PARKKH, JORGEOY, YOONMC.A study on primers and the same distribution for Minimum Qualification (MQL) [ J QL ]].International Journal of Machine Tools&Manufature, 2010 (50): 824-833) for converting the two-dimensional plane diameter obtained by automatic image recognition into the actual particle diameter D of the liquid drop3D：D3D＝0.0012D2 2D+0.1997D2D-0.0987。

Claims (9)

1. The minimal quantity lubrication device is characterized by comprising a nozzle (11), a high-pressure air conveying device, a lubricating oil conveying device and a high-pressure ionized air conveying device; a primary atomizing chamber, a secondary atomizing chamber, an air passage alpha, an air passage beta and a liquid passage are arranged in the nozzle (11);
an inlet of the primary atomizing chamber is simultaneously connected with an air passage alpha and a liquid channel, the fluid sprayed from the air passage alpha and the fluid sprayed from the liquid channel form an angle of 30-50 degrees, the air passage alpha is connected with an outlet of the high-pressure air conveying device, and the liquid channel is connected with an outlet of the lubricating oil conveying device;
the inlet of the secondary atomizing chamber is connected with the air passage beta and the outlet of the primary atomizing chamber, the fluid sprayed out of the air passage beta and the fluid sprayed out of the outlet of the primary atomizing chamber form 90 degrees, the air passage beta is connected with the outlet of the high-pressure ionized air conveying device, and the outlet of the secondary atomizing chamber is connected with the outlet of the nozzle (11).
2. A minimal quantity of lubricating device as claimed in claim 1, wherein the primary atomizing chamber is a cylindrical cavity with a diameter of 3-6 mm and a height of 8-12 mm, and the secondary atomizing chamber is a cylindrical cavity with a diameter of 10-20 mm and a height of 20-30 mm; the diameter of the outlet of the nozzle (11) is 0.5-1 mm.
3. A minimal quantity lubrication device as claimed in claim 2, characterised in that the nozzle (11) is formed by a vertical section I and an L-shaped curved section formed by a horizontal section and a vertical section II; the upper part of the vertical section I is connected with the L-shaped bent section into a U shape; the first-stage atomizing chamber is arranged in the horizontal section of the L-shaped bending section, and the second-stage atomizing chamber is arranged in the vertical section I.
4. A minimal quantity lubrication device as claimed in claim 3, wherein the high pressure air delivery device is formed by connecting an air filter m, a pipeline I, an air pump p, a pipeline II and a pipeline III in sequence, and the outlet of the pipeline III is the outlet of the high pressure air delivery device.
5. The minimal quantity lubrication device according to claim 4, wherein the high-pressure ionized air delivery device is composed of a high-pressure negative ion generator (7) and an air filter n, a pipeline a, an air pump q, a pipeline b, a pipeline c, an air ionization chamber (14) and a pipeline d which are connected in sequence, the high-pressure negative ion generator (7) is connected with the air ionization chamber (14), the outlet of the pipeline d is the outlet of the high-pressure ionized air delivery device, and the pipeline d is a polytetrafluoroethylene insulation tube (13).
6. A minimal quantity lubrication device as claimed in claim 5, characterised in that the air filter m is the same air filter (3) as the air filter n; the pipeline I and the pipeline a are the same pipeline; the pipeline II and the pipeline b are the same pipeline; the air pump p and the air pump q are the same air pump (5).
7. A minimal quantity lubrication device as claimed in claim 6, characterised in that a gas flow meter (4) is arranged in each of the line III and the line c, and a manual gas flow regulating valve (6) is arranged in each of the line III and the line c, the manual gas flow regulating valve (6) being arranged between the gas flow meter (4) and the gas pump (5), the flow q of the line III being such that the flow q is equal to the flow qBThe setting range is 80-90L/h, and the flow q of the pipeline cCThe setting range is 40-50L/h.
8. A minimal quantity lubrication device as claimed in claim 3, characterised in that the lubricant delivery means is formed by a reservoir (1), a first conduit, a micro pump (8) and a second conduit connected in series, the reservoir (1) being located laterally above the nozzle (11), the micro pump (8) being located laterally below the nozzle (11), the outlet of the second conduit being the outlet of the lubricant delivery means.
9. A minimal quantity lubrication device as claimed in claim 8, wherein the first conduit is provided with a precision oil quantity adjusting knob; the second pipeline is a universal bamboo joint pipe (12) on which a liquid flowmeter (9) is arranged, and the flow q of the second pipelineAThe setting range is 5-20 mL/h.
CN202210016667.5A 2022-01-07 2022-01-07 Trace lubricating device Active CN114458931B (en)

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CN114458931B CN114458931B (en) 2023-07-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201686665U (en) * 2010-04-14 2010-12-29 洛阳高新柯恒石化技术有限公司 Atomizing nozzle used for feeding of heavy oil catalytic cracking unit
CN102287606A (en) * 2011-07-17 2011-12-21 青岛理工大学 Nano particle jet flow micro-scale lubricating and grinding three-phase flow supply system
CN103528074A (en) * 2012-07-04 2014-01-22 中国石油化工股份有限公司 Spray gun for incinerating waste tar of ammonium sulfate device
CN103897721A (en) * 2014-03-10 2014-07-02 沈庆成 Feeding spray nozzle of raising pipe of high-efficiency catalytic cracking device and atomizing method
CN109986404A (en) * 2019-04-11 2019-07-09 浙江工业大学 Electrostatic minimum quantity lubrication device
CN111993283A (en) * 2020-08-22 2020-11-27 浙江工业大学 Device based on electrostatic micro-lubricating cutting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201686665U (en) * 2010-04-14 2010-12-29 洛阳高新柯恒石化技术有限公司 Atomizing nozzle used for feeding of heavy oil catalytic cracking unit
CN102287606A (en) * 2011-07-17 2011-12-21 青岛理工大学 Nano particle jet flow micro-scale lubricating and grinding three-phase flow supply system
CN103528074A (en) * 2012-07-04 2014-01-22 中国石油化工股份有限公司 Spray gun for incinerating waste tar of ammonium sulfate device
CN103897721A (en) * 2014-03-10 2014-07-02 沈庆成 Feeding spray nozzle of raising pipe of high-efficiency catalytic cracking device and atomizing method
CN109986404A (en) * 2019-04-11 2019-07-09 浙江工业大学 Electrostatic minimum quantity lubrication device
CN111993283A (en) * 2020-08-22 2020-11-27 浙江工业大学 Device based on electrostatic micro-lubricating cutting

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