CN110756104A - Preparation of nano fluid cutting fluid and filtering circulation system thereof - Google Patents
Preparation of nano fluid cutting fluid and filtering circulation system thereof Download PDFInfo
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- CN110756104A CN110756104A CN201911094430.3A CN201911094430A CN110756104A CN 110756104 A CN110756104 A CN 110756104A CN 201911094430 A CN201911094430 A CN 201911094430A CN 110756104 A CN110756104 A CN 110756104A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
- B01D33/0307—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with bag, cage, hose, tube, sleeve or the like filtering elements
- B01D33/033—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with bag, cage, hose, tube, sleeve or the like filtering elements arranged for outward flow filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/29—Filters with filtering elements which move during the filtering operation the movement of the filter elements being a combination of movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
- B01F31/83—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations comprising a supplementary stirring element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/80—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations
- B01F31/86—Mixing by means of high-frequency vibrations above one kHz, e.g. ultrasonic vibrations with vibration of the receptacle or part of it
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
- B23Q11/1061—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using cutting liquids with specially selected composition or state of aggregation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1069—Filtration systems specially adapted for cutting liquids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/39—Mixing of ingredients for grease or lubricating compositions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Lubricants (AREA)
Abstract
The invention designs a nano fluid cutting fluid preparation and filtration circulation system thereof, which comprises a constant temperature stirring device, a residual fluid filtration device and a cutting fluid storage barrel. The stable dispersed nano fluid cutting fluid is prepared by the constant temperature ultrasonic stirring device, enters the cutting fluid storage barrel through a conveying pipeline and is finally sent to a liquid supply system of a numerical control machine tool through a self-priming pump. After the nano fluid cutting fluid is used, the nano fluid cutting fluid is recycled and filtered through the residual liquid filtering device and is subjected to secondary dispersion, so that the dispersion stability of the nano fluid cutting fluid after being filtered is ensured. Compared with the traditional cutting fluid, the cutting fluid prepared by adopting the nanofluid has better cooling and lubricating effects, and can be filtered and recycled. The invention has the characteristics of simple structure, easy production and installation and high automation degree.
Description
Technical Field
The invention belongs to the field of machining equipment, relates to a cutting fluid preparation and filtration circulation system, and particularly relates to a nano fluid cutting fluid preparation and filtration circulation system.
Background
The cutting fluid cooling system is an indispensable part of a machining system and plays an important role. Cutting heat and cutting temperature are common physical phenomena in the machining process, and have important influence on tool wear, tool life and thermal deformation of a machining process system. In particular to difficult-to-machine materials, when the temperature of the surface of a workpiece is too high, the surface of the workpiece is burnt, and the service time of the part is shortened. Excessive cutting force during machining can cause the abrasion of the cutter to be intensified and the surface quality to be reduced. Therefore, the cutting fluid is considered to be used for solving the problem, the cutting fluid can play roles in cooling, lubricating, cleaning, flushing chips and the like, and can effectively reduce the cutting temperature and the cutting force, thereby reducing the abrasion of a cutter and improving the surface quality of a workpiece. In order to reduce the production cost in the actual production process, the cutting fluid is usually collected again and recycled through a filtering system. The cutting fluid is widely applied to mechanical processing and has large use amount. However, due to the toxicity of the additive, the health of workers is the first time, and the waste cutting fluid causes pollution to the environment. Therefore, green machining is realized, and development of green cutting fluid is imperative.
Nanofluid refers to a stable, uniform suspension of nanoparticles dispersed in a degradable base liquid in a manner and ratio. Because the heat conductivity coefficient of the solid is larger than that of the liquid, the heat conductivity can be effectively improved by adding solid particles into the liquid. Meanwhile, the nano particles can play a role in resisting wear and reducing friction, and the lubricating property of the base liquid is improved. However, the surface area of the nano particles is large, the surface energy is high, and the nano particles spontaneously agglomerate and sink in the base liquid, so that the flow performance and the heat exchange effect of the nano particles are influenced. The stability is usually enhanced by adding a dispersant, reducing the particle size of the nanoparticles, adjusting the PH, ultrasonic vibration, etc. Recent domestic and foreign research shows that the good cooling and lubricating performance of the nanofluid effectively improves the processing conditions. Therefore, the nanofluid is expected to solve the problems of overhigh temperature, overlarge cutting force and the like generated in the machining process.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a nano fluid cutting fluid preparation and a filtration circulation system thereof, the system can prepare a cutting fluid with excellent lubricating and cooling performances, and the dispersion stability of the nano fluid cutting fluid is improved under the action of ultrasonic cavitation and mechanical stirring. And the nano fluid cutting fluid residual liquid can be collected, filtered and recycled.
A nano-fluid cutting fluid preparation and a filtering circulation system thereof comprise a constant-temperature ultrasonic stirring device, a residual fluid filtering device and a cutting fluid storage barrel. The method is characterized in that:
the constant-temperature ultrasonic stirring device comprises a base, a driving motor, a speed reducer, a stirring mechanism, an ultrasonic generator, a thermostat, a control panel and a conveying pipeline, wherein the base is horizontally placed on the ground; the stirring mechanism is arranged in the center of the constant-temperature ultrasonic stirring device; the ultrasonic generators are uniformly distributed on the side wall of the constant-temperature ultrasonic stirring device; the control panel is installed on the side wall of the constant-temperature ultrasonic stirring device and used for controlling the start and stop of the constant-temperature ultrasonic stirring device; the thermostat is arranged at the bottom end of the inner wall of the constant-temperature ultrasonic stirring device; the upper end of the constant-temperature ultrasonic device is provided with an opening for supplying nano particles, base liquid and a dispersing agent; the driving motor is arranged above the constant-temperature ultrasonic stirring device and is connected with the constant-temperature ultrasonic stirring device through the speed reducer;
the stirring mechanism comprises a stirring shaft, radial blades, axial blades and barrel bottom blades; the radial blades are arranged on the stirring shaft at a certain angle, the axial blades are vertically arranged on the stirring shaft, and the barrel bottom blades are arranged at the lower end of the stirring shaft;
the radial blades are divided into two blades in the vertical direction and one blade in the horizontal direction, and the two blades in the vertical direction are distributed on the end faces of the blades in a vertically staggered manner;
the cutting fluid storage barrel is communicated with the constant ultrasonic stirring device through a conveying pipeline;
the residual liquid filtering device comprises a driving motor, a speed reducer, a central shaft, a primary filter screen, a secondary filter screen, a cutting fluid backflow pipeline and stirring blades; the residual liquid filtering device is divided into an upper layer and a lower layer, the upper layer realizes solid-liquid separation of the cutting fluid, and the lower layer realizes secondary dispersion of the cutting fluid; the driving motor is arranged above the residual liquid filtering device and is connected with the residual liquid filtering device through the speed reducer; the inlet is positioned above the residual liquid filtering device; the central shaft is arranged at the center of the residual liquid filtering device; the primary filter screen is arranged on the central shaft; the secondary filter screen is arranged on the central shaft and is arranged outside the primary filter screen; the stirring blades are arranged at the bottom of the central shaft; the ultrasonic generators are uniformly distributed on the side wall of the residual liquid filtering device; the outlet is positioned at the bottom of the residual liquid filtering device; the outlet is communicated with the cutting fluid storage barrel through a self-priming pump;
the nano fluid is formed by uniformly dispersing two or more kinds of nano particles, base liquid and dispersing agent;
the nanoparticles can be metal, metal oxide, non-metal oxide, carbon nanotubes, sulfides, and the like;
the base liquid is mainly deionized water, vegetable oil and the like;
the dispersant may be an ionic surfactant, a nonionic surfactant, or the like;
the control system comprises a PLC control system and a hydraulic system;
preferably, the number of the ultrasonic generators is four;
preferably, the number of the thermostats is four;
preferably, the primary filter screen and the secondary filter screen are both made of aluminum alloy;
preferably, the driving motors are all servo motors;
the preparation method has the beneficial effects that the uniformly dispersed nano fluid can be prepared and used immediately, the sedimentation caused by the agglomeration of nano particles due to overlong storage time can be effectively avoided, the nano fluid has high heat conductivity coefficient and excellent lubricating property, a large amount of cutting heat in a cutting area can be taken away, the cooling property and the lubricating property of the traditional cutting liquid are enhanced, the service life of a cutter is effectively prolonged, the more excellent workpiece surface is obtained, the residual liquid can be continuously recycled through a residual liquid filtering device, and the purposes of saving resources and realizing green manufacturing are achieved.
Drawings
Fig. 1 is a schematic connection diagram of a nanofluid cutting fluid preparation and a filtration cycle system thereof according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a constant temperature ultrasonic stirring device in a nanofluid cutting fluid preparation and filtration circulation system thereof in an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a raffinate filtering apparatus in a nanofluid cutting fluid preparation and filtration cycle system according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
a constant temperature ultrasonic stirring device (1); a cutting fluid storage barrel (2); a self-priming pump (3); a raffinate filtration unit (4); a drive motor (5); a speed reducer (6); a radial blade (7); a stirring shaft (8); axial vanes (9); a constant temperature heater (10); an ultrasonic generator (11); a delivery duct (12); a base (13); a tub bottom blade (14); a control panel (15); an inlet (16); a primary strainer (17); a secondary strainer (18); a central shaft (19); a stirring blade (20); an ultrasonic generator (21); an outlet (22);
Detailed Description
The present invention will be described in further detail with reference to fig. 1 to 3.
As shown in fig. 1, a nanofluid cutting fluid preparation and filtration circulation system thereof comprises a constant temperature ultrasonic stirring device (1), a cutting fluid storage barrel (2), a self-priming pump (3), a residual fluid filtering device (4) and a control system, and is mainly characterized in that:
a nanofluid cutting fluid preparation and filtering circulation system is arranged outside a machine tool, and nanoparticles, base fluid and a dispersing agent are subjected to mechanical stirring, heating and ultrasonic dispersion through a constant-temperature ultrasonic stirring device (shown in figure 2) according to the amount of cutting fluid required by machining to prepare stably dispersed nanofluid serving as the cutting fluid. Then the cutting fluid enters a cutting fluid storage barrel (2), enters a liquid supply system of the numerical control machine tool through a self-sucking pump (3) and is sprayed to a cutting area. The cutting fluid enters a first-stage filter screen (17) and a second-stage filter screen (18) in the upper layer of a residual fluid filtering device (shown in figure 3) through a collecting device to be filtered to realize solid-liquid separation, and in order to reduce the quality of the filter screens, aluminum alloy is selected to prepare the filter screens. The cutting fluid residual liquid enters the lower layer after being filtered, secondary dispersion is realized through mechanical stirring and ultrasonic oscillation, and the cutting fluid residual liquid returns to the cutting fluid storage barrel through a self-sucking pump (3), so that the purpose of recycling is achieved. The PLC and the hydraulic system complete the control of the motion sequence of each part. The present invention is not limited to the above-mentioned implementation method, and any technical solutions similar or identical to the present invention are within the protection scope of the present invention.
Claims (9)
1. A nanometer fluid cutting fluid preparation and filtration cycle system thereof is characterized in that: and a nanofluid cutting fluid preparation and filtration circulation system is arranged outside the machine tool and comprises a constant-temperature ultrasonic stirring device, a residual fluid filtration device and a cutting fluid storage barrel. And preparing the nano fluid cutting fluid with a corresponding amount according to the cutting fluid consumption required by processing by the constant-temperature ultrasonic stirring device. After the cutting fluid is prepared, the cutting fluid is placed in a cutting fluid storage barrel, then enters a fluid supply system of a numerical control machine tool through a self-priming pump, and is recycled through a residual fluid filtering device after the cutting fluid is used.
2. The preparation and filtration cycle system of nanofluid according to claim 1, wherein the nanofluid is a stably dispersed nanofluid formed by mixing nanoparticles with a base fluid in the constant temperature ultrasonic stirring device, adding a proper amount of dispersant, and working for 30 minutes by the constant temperature ultrasonic stirring device.
3. The constant-temperature ultrasonic stirring device according to claim 1, wherein: the constant-temperature ultrasonic stirring device comprises a base, a driving motor, a speed reducer, a stirring mechanism, an ultrasonic generator, a thermostat, a control panel and a conveying pipeline, wherein the base is horizontally placed on the ground; the stirring mechanism is arranged in the center of the constant-temperature ultrasonic stirring device; the ultrasonic generators are uniformly distributed on the side wall of the constant-temperature ultrasonic stirring device; the control panel is installed on the side wall of the constant-temperature ultrasonic stirring device and used for controlling the start and stop of the constant-temperature ultrasonic stirring device; the thermostats are uniformly arranged at the bottom end of the inner wall of the constant-temperature ultrasonic stirring device; the upper end of the constant-temperature ultrasonic device is provided with an opening for supplying nano particles, base liquid and a dispersing agent; the driving motor is arranged above the constant-temperature ultrasonic stirring device and is connected with the constant-temperature ultrasonic stirring device through the speed reducer.
4. The stirring mechanism of claim 3, wherein: the stirring mechanism comprises a stirring shaft, and a radial blade, an axial blade and a barrel bottom blade are mounted on the stirring shaft.
5. The radial blade of claim 4, wherein: the radial blades are arranged on the stirring shaft at a certain angle and are divided into two vertical blades and a horizontal blade, the two vertical blades are vertically distributed on the blade plane in a staggered manner, the axial blades are vertically arranged on the stirring shaft, and the barrel bottom blades are arranged at the lower end of the stirring shaft.
6. The nanofluid cutting fluid preparation and filtration cycle system according to claim 1, wherein: the cutting fluid storage barrel is communicated with the constant ultrasonic stirring device through a conveying pipeline.
7. The nanofluid cutting fluid preparation and filtration cycle system according to claim 1, wherein: the residual liquid filtering device comprises a driving motor, a speed reducer, a central shaft, a primary filter screen, a secondary filter screen, a cutting fluid backflow pipeline and stirring blades; the residual liquid filtering device is divided into an upper layer and a lower layer, the upper layer realizes solid-liquid separation of cutting fluid, and the lower layer realizes secondary dispersion of the cutting fluid.
8. The raffinate filtration plant of claim 1 wherein: in the two-stage filter screen, the sieve mesh diameter of the first-stage filter screen is larger than that of the second-stage filter screen.
9. The nanofluid cutting fluid preparation and filtration cycle system according to claim 1, wherein: the cutting fluid is filtered and then is sent into a cutting fluid storage barrel through a self-priming pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094430.3A CN110756104A (en) | 2019-11-11 | 2019-11-11 | Preparation of nano fluid cutting fluid and filtering circulation system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911094430.3A CN110756104A (en) | 2019-11-11 | 2019-11-11 | Preparation of nano fluid cutting fluid and filtering circulation system thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111872737A (en) * | 2020-07-30 | 2020-11-03 | 李波 | Nano-fluid agglomeration preventing device for machining |
| CN112338625A (en) * | 2020-11-12 | 2021-02-09 | 邰秀海 | Oil stain cooling and recycling device for numerical control machine tool |
| CN113352486A (en) * | 2021-07-21 | 2021-09-07 | 阜宁协鑫光伏科技有限公司 | Cutting fluid circulation control system and control method |
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| US6557784B1 (en) * | 1999-11-24 | 2003-05-06 | Daido Metal Company Ltd. | Mixer for forming a thin oil film on a surface of a drop of water |
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| CN102765009A (en) * | 2012-06-30 | 2012-11-07 | 无锡成诺精密机械有限公司 | Cutting fluid filtering device |
| CN105479255A (en) * | 2016-01-18 | 2016-04-13 | 济南大学 | Nanometer additive cutting fluid dispersion and atomization circulating device based on ultrasonic vibration |
| CN207722451U (en) * | 2017-11-09 | 2018-08-14 | 王金停 | A kind of pipe line filter for producing carboxylic styrene butadiene latex |
| CN208213041U (en) * | 2018-03-29 | 2018-12-11 | 勤威(天津)工业有限公司 | A kind of automatic blending cutting liquid device |
| CN109432843A (en) * | 2018-12-29 | 2019-03-08 | 柳州亚翔科技有限公司 | A kind of formaldehyde-free glue purifying plant |
| CN209050501U (en) * | 2018-08-23 | 2019-07-02 | 江苏盛鸿大业智能科技股份有限公司 | A kind of machine cut liquid circulating device with multi-filtering function |
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2019
- 2019-11-11 CN CN201911094430.3A patent/CN110756104A/en active Pending
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| US6557784B1 (en) * | 1999-11-24 | 2003-05-06 | Daido Metal Company Ltd. | Mixer for forming a thin oil film on a surface of a drop of water |
| CN201493954U (en) * | 2009-09-17 | 2010-06-02 | 长安大学 | Opposed mixing mechanism for forced asphalt mixer |
| CN102765009A (en) * | 2012-06-30 | 2012-11-07 | 无锡成诺精密机械有限公司 | Cutting fluid filtering device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111872737A (en) * | 2020-07-30 | 2020-11-03 | 李波 | Nano-fluid agglomeration preventing device for machining |
| CN112338625A (en) * | 2020-11-12 | 2021-02-09 | 邰秀海 | Oil stain cooling and recycling device for numerical control machine tool |
| CN112338625B (en) * | 2020-11-12 | 2022-09-09 | 广州亿立升智能系统有限公司 | Oil stain cooling and recycling device for numerical control machine tool |
| CN113352486A (en) * | 2021-07-21 | 2021-09-07 | 阜宁协鑫光伏科技有限公司 | Cutting fluid circulation control system and control method |
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