阅读说明：本技术 一种环保型水溶性金属加工切削液 (Environment-friendly water-soluble metal processing cutting fluid ) 是由 朱静 于 2021-07-15 设计创作，主要内容包括：本发明属于切削液领域,具体涉及一种环保型水溶性金属加工切削液,本方案提供一种环保型水溶性金属加工切削液,包括：20.0％～40.0%的自乳化合成脂、20.0％～30.0%的二元羧酸、25.0％～35.0的pH值调节剂、5.0%～25.0软化水、0.5%～8.0%十二烷基胍盐酸盐、5.0%～14.0%醇醚羧酸。十二烷基胍盐酸盐可以灭杀TGB、SRB和FB三种菌,有效抑制切削液中细菌滋生,提高了切削液的抗菌性,同时提高切削液的稳定性,醇醚羧酸在酸碱环境下具有优良的抗电解质稳定性,可以提高切削液的抗硬化能力。本方案通过添加十二烷基胍盐酸盐有效抑制了切削液中细菌滋生,同时保持了切削液中物质稳定,提高了切削液的稳定性。(The invention belongs to the field of cutting fluid, and particularly relates to environment-friendly water-soluble metal processing cutting fluid, which provides environment-friendly water-soluble metal processing cutting fluid and comprises the following components: 20.0-40.0% of self-emulsifying synthetic grease, 20.0-30.0% of dicarboxylic acid, 25.0-35.0% of pH value regulator, 5.0-25.0% of softened water, 0.5-8.0% of dodecyl guanidine hydrochloride and 5.0-14.0% of alcohol ether carboxylic acid. The dodecyl guanidine hydrochloride can kill three bacteria of TGB, SRB and FB, effectively inhibits the bacterial breeding in the cutting fluid, improves the antibacterial property of the cutting fluid, improves the stability of the cutting fluid, and the alcohol ether carboxylic acid has excellent electrolyte resistance stability in an acid-base environment and can improve the hardening resistance of the cutting fluid. According to the scheme, bacteria breeding in the cutting fluid is effectively inhibited by adding the dodecyl guanidine hydrochloride, the stability of substances in the cutting fluid is kept, and the stability of the cutting fluid is improved.)

1. An environment-friendly water-soluble metal working cutting fluid, comprising: 20.0-40.0% of self-emulsifying synthetic grease, 20.0-30.0% of dicarboxylic acid, 25.0-35.0% of pH value regulator, 5.0-25.0% of softened water, 0.5-8.0% of dodecyl guanidine hydrochloride and 5.0-14.0% of alcohol ether carboxylic acid.

2. The environment-friendly water-soluble metal working cutting fluid according to claim 1, wherein: also comprises 26.0 percent of self-emulsifying synthetic grease, 25.0 percent of dicarboxylic acid, 25.0 percent of pH value regulator, 10.0 percent of softened water, 4.0 percent of dodecyl guanidine hydrochloride and 10.0 percent of alcohol ether carboxylic acid.

3. The method for preparing the environment-friendly water-soluble metal processing cutting fluid according to claim 1, characterized in that: the method comprises the following steps: step 1: preparing self-emulsifying synthetic grease, dicarboxylic acid, a pH value regulator, softened water, dodecyl guanidine hydrochloride and alcohol ether carboxylic acid according to a proportion; step 2: adding self-emulsifying synthetic fat into a reaction kettle, and heating to 60-75 ℃; and step 3: uniformly mixing dicarboxylic acid, dodecyl guanidine hydrochloride and alcohol ether carboxylic acid, and adding into a reaction kettle; and 4, step 4: adding a pH value regulator and softened water into a reaction kettle, and uniformly stirring at the temperature of 5-10 ℃ for 20-50 min to obtain the cutting fluid.

4. The method for preparing the environment-friendly water-soluble metal processing cutting fluid according to claim 3, characterized in that: the mass ratio of the emulsified synthetic fat, the dicarboxylic acid and the pH value regulator in the step 1 is 1.04:1: 1.

5. The method for preparing the environment-friendly water-soluble metal processing cutting fluid according to claim 3, characterized in that: the softened water in the step 1 contains 0.1-0.3% of sodium tripolyphosphate or diethylamine ammonium tetraacetate.

6. The method for preparing the environment-friendly water-soluble metal processing cutting fluid according to claim 3, characterized in that: and step 4, uniformly stirring the mixed solution in the reaction kettle by adopting an electromagnetic stirring mode.

7. The method for preparing the environment-friendly water-soluble metal processing cutting fluid according to claim 3, characterized in that: and 4, uniformly stirring the mixed liquid in the reaction kettle by adopting an electrically controlled mechanical stirring mode with a propeller type stirring head, wherein the rotating speed of the stirring head is 150-250 rmp/min.

8. The method for preparing the environment-friendly water-soluble metal processing cutting fluid according to claim 3, characterized in that: in the step 4, the mixed solution is oscillated in a manner of using ultrasonic waves.

Technical Field

The invention belongs to the field of cutting fluid, and particularly relates to environment-friendly water-soluble metal processing cutting fluid.

Background

The cutting fluid (coolant) is an industrial liquid used for cooling and lubricating cutters and workpieces in the metal cutting and grinding process, is formed by scientifically compounding and matching various super-strong functional additives, and has the characteristics of good cooling performance, lubricating performance, antirust performance, oil removal and cleaning functions, anticorrosion function and easiness in dilution. The defects that the traditional soap-based emulsion is easy to smell in summer, difficult to dilute in winter and poor in antirust effect are overcome, the lathe paint is not affected, and the soap-based emulsion is suitable for cutting and grinding ferrous metal and belongs to the most advanced grinding product at present.

The application number CN201410548551.1 discloses a fully synthetic lubricating and antirust composition for cutting machining, which comprises the following components in percentage by mass: 30.0 to 40.0 percent of self-emulsifying synthetic ester, 25.0 to 35.0 percent of dicarboxylic acid, 25.0 to 35.0 percent of pH value regulator and 10.0 to 20.0 percent of softened water; the fully synthetic cutting fluid concentrated solution has excellent lubricating property, antirust property, cooling property and cleaning property, can effectively reduce the friction force in the metal processing process, reduce the friction heat and ensure the smoothness of processed workpieces, and can be prepared into a fully synthetic cutting fluid concentrated solution with transparent appearance and stable performance by adding 10.0-20.0 percent of the composition into tap water. The concentrated solution is diluted into the cutting fluid working solution with the concentration of 5.0% by using tap water, can be directly used for cutting and grinding cast iron and steel, and can meet the requirements of the lubricating property and the antirust property of machining.

Disclosure of Invention

The scheme provides the environment-friendly water-soluble metal processing cutting fluid capable of improving the antibacterial property.

In order to achieve the above object, the present invention provides an environment-friendly water-soluble metal working cutting fluid, comprising: 20.0 to 40.0 percent of self-emulsifying synthetic fat, 20.0 to 30.0 percent of dicarboxylic acid, 25.0 to 35.0 percent of pH value regulator, 5.0 to 25.0 percent of softened water, 0.5 to 8.0 percent of dodecyl guanidine hydrochloride and 5.0 to 14.0 percent of alcohol ether carboxylic acid.

The principle of the scheme is as follows: the dodecyl guanidine hydrochloride can kill three bacteria of TGB, SRB and FB, effectively inhibits the bacterial breeding in the cutting fluid, improves the antibacterial property of the cutting fluid, simultaneously improves the stability of the cutting fluid, the alcohol ether carboxylic acid can overcome the defects of poor hard water resistance of an anionic surfactant and the dispersion capacity of a nonionic surfactant calcium soap, the alcohol ether carboxylic acid does not foam violently, has excellent stability of an anti-electrolyte in an acid-base environment, and can improve the anti-hardening capacity of the cutting fluid.

The scheme has the beneficial effects that: according to the scheme, the bacteria breeding in the cutting fluid is effectively inhibited by adding the dodecyl guanidine hydrochloride; meanwhile, the stability of substances in the cutting fluid is kept, and the stability of the cutting fluid is improved; the environment is not polluted, and the environment is protected; effectively inhibiting the breeding of bacteria, reducing the corrosion to processing equipment and prolonging the service life of the processing equipment; the cutting fluid does not foam violently, so that better cooling and washing effects are achieved, the loss of the cutting fluid is reduced, and the cost is reduced; the cutting fluid is convenient and fast to recover.

Further, 26.0% of self-emulsifying synthetic fat, 25.0% of dicarboxylic acid, 25.0% of pH value regulator, 10.0% of softened water, 4.0% of dodecyl guanidine hydrochloride and 10.0% of alcohol ether carboxylic acid.

Further, the preparation method of the environment-friendly water-soluble metal processing cutting fluid comprises the following steps:

step 1: preparing self-emulsifying synthetic grease, dicarboxylic acid, a pH value regulator, softened water, dodecyl guanidine hydrochloride and alcohol ether carboxylic acid according to a proportion; step 2: adding the self-emulsifying synthetic fat into a reaction kettle, and heating to 60-75 ℃; and step 3: uniformly mixing dicarboxylic acid, dodecyl guanidine hydrochloride and alcohol ether carboxylic acid, and adding into a reaction kettle; and 4, step 4: adding a pH value regulator and softened water into a reaction kettle, and uniformly stirring at the temperature of 5-10 ℃ for 20-50 min to obtain the cutting fluid.

Further, the mass ratio of the emulsified synthetic fat, the dicarboxylic acid and the pH value regulator in the step 1 is 1.04:1: 1.

Furthermore, the softened water in the step 1 contains 0.1-0.3% of sodium tripolyphosphate or diethylamine ammonium tetraacetate, so that the water quality is softened, and the anti-hardening capacity of the cutting fluid is improved.

Further, in the step 4, the mixed liquid in the reaction kettle is uniformly stirred in an electromagnetic stirring mode. The materials can be fully mixed as much as possible, and the materials are uniformly distributed.

Further, in the step 4, the mixed liquid in the reaction kettle is uniformly stirred by adopting an electrically controlled mechanical stirring mode with a propeller type stirring head, and the rotating speed of the stirring head is 150-250 rmp/min. The materials can be fully mixed as much as possible, and the materials are uniformly distributed.

Further, in the step 4, the mixed solution is oscillated in a manner of using ultrasonic waves in a coordinated manner, and the ultrasonic waves disperse the mixed solution to sufficiently mix the substances.

According to the scheme, the dodecyl guanidine hydrochloride and the alcohol ether carboxylic acid are added, so that the bacterial breeding in the cutting fluid is effectively inhibited, the antibacterial property of the cutting fluid is improved, the stability of the cutting fluid is improved, the alcohol ether carboxylic acid can overcome the defects of poor hard water resistance of an anionic surfactant and the dispersing capacity of a calcium soap of a nonionic surfactant, the alcohol ether carboxylic acid cannot be foamed violently, and the cutting fluid has excellent electrolyte resistance stability in an acid-base environment and can improve the hardening resistance of the cutting fluid.

Drawings

FIG. 1 is a graph showing the growth change of SRB bacteria in example 3 of the present invention after addition of cutting fluid of dodecyl guanidine hydrochloride over 15 days.

Fig. 2 is a schematic structural diagram of an apparatus for using an environment-friendly water-soluble metal processing cutting fluid in embodiment 4 of the present invention.

Fig. 3 is a logic block diagram of an apparatus for using an environment-friendly water-soluble metal processing cutting fluid according to embodiment 4 of the present invention.

Detailed Description

The following is further detailed by the specific embodiments:

description of the drawings: the device comprises a machine tool 1, equipment 2, a spray head 3, a pipeline 4, a liquid pump 5, a cutting fluid box 6, a stirring shaft 7, a helical blade 8, a camera 9, a vibration sensor 10 and a motor 11.

Example 1:

the embodiment provides an environment-friendly water-soluble metal processing cutting fluid, which comprises: 20.0-40.0% of self-emulsifying synthetic fat (the mass fraction of the self-emulsifying synthetic fat in the embodiment is 26.0%), 20.0-30.0% of dicarboxylic acid (the mass fraction of the dicarboxylic acid in the embodiment is 25.0%), 25.0-35.0% of pH value regulator (the mass fraction of the pH value regulator in the embodiment is 25.0%), 5.0-25.0% of softened water (the mass fraction of the softened water in the embodiment is 10.0%), 0.5-5% of dodecyl guanidine hydrochloride (the mass fraction of the dodecyl guanidine hydrochloride in the embodiment is 2.0%), and 3.0-10.0% of alcohol ether carboxylic acid (the mass fraction of the alcohol ether carboxylic acid in the embodiment is 12.0%).

The preparation method of the environment-friendly water-soluble metal processing cutting fluid comprises the following steps:

step 1: preparing self-emulsifying synthetic grease, dicarboxylic acid, a pH value regulator, softened water, dodecyl guanidine hydrochloride and alcohol ether carboxylic acid according to the mass fraction ratio; the softened water contains 0.1-0.3% of sodium tripolyphosphate or diethylamine ammonium tetraacetate, so that the water quality is softened, and the hardening resistance of the cutting fluid is improved; in the embodiment, the dicarboxylic acid is a mixture of long-chain dicarboxylic acid and short-chain dicarboxylic acid.

Step 2: adding the self-emulsifying synthetic fat into a reaction kettle, and heating to 60-75 ℃;

and step 3: uniformly mixing dicarboxylic acid, dodecyl guanidine hydrochloride and alcohol ether carboxylic acid, and adding into a reaction kettle;

and 4, step 4: adding a pH value regulator and softened water into a reaction kettle, and uniformly stirring at the temperature of 5-10 ℃ for 20-50 min to obtain the cutting fluid. And uniformly stirring the mixed liquid in the reaction kettle by adopting an electromagnetic stirring mode. The materials can be fully mixed as much as possible, and the materials are uniformly distributed. And uniformly stirring the mixed liquid in the reaction kettle by adopting an electrically controlled mechanical stirring mode with a propeller type stirring head, wherein the rotating speed of the stirring head is 150-250 rmp/min. The materials can be fully mixed as much as possible, and the materials are uniformly distributed.

When the breath material is fully stirred, the mixed liquid is oscillated in a mode of matching with the ultrasonic wave, and the ultrasonic wave disperses the mixed liquid to fully mix the material.

Example 2: the difference between this example and example 1 is that an environment-friendly water-soluble metal working cutting fluid comprises: 26.0 percent of self-emulsifying synthetic grease, 25.0 percent of dicarboxylic acid, 25.0 percent of pH value regulator, 10.0 percent of softened water, 3.2 percent of dodecyl guanidine hydrochloride and 11.8 percent of alcohol ether carboxylic acid.

Example 3: the difference between this example and example 1 is that an environment-friendly water-soluble metal working cutting fluid comprises: 26.0 percent of self-emulsifying synthetic grease, 25.0 percent of dicarboxylic acid, 25.0 percent of pH value regulator, 10.0 percent of softened water, 4.0 percent of dodecyl guanidine hydrochloride and 10 percent of alcohol ether carboxylic acid.

Example 4: the difference between this embodiment and embodiment 1 is that an apparatus for using an environment-friendly water-soluble metal processing cutting fluid is provided, as shown in fig. 2, specifically including: lathe 1 and the equipment 2 that is used for processing, equipment 2 passes through bolt fixed mounting on lathe 1, is provided with the recess on lathe 1, has placed cutting fluid case 6 in the recess, and it has the cutting fluid to fill in cutting fluid case 6, and the cutting fluid top is equipped with the opening, and the opening is used for adding the cutting fluid, and the cutting fluid surface is equipped with sealed lid, and sealed lid is used for sealing the opening, prevents that impurity such as dust from entering into cutting fluid case 6 and polluting the cutting fluid. A stirring shaft 7 is arranged in the cutting fluid box 6, a motor 11 for driving the stirring shaft 7 to rotate is fixed on the cutting fluid box 6 through bolts, the motor 11 is positioned at the top of the cutting fluid box 6, and an output shaft of the motor 11 is welded with the stirring shaft 7. The stirring shaft 7 is rotationally connected with the bottom of the cutting fluid, the stirring shaft 7 is welded with a helical blade 8, and when the stirring shaft 7 rotates forwards, the helical blade 8 can enable the cutting fluid to move upwards to enable the cutting fluid to be in contact with air; when the stirring shaft 7 rotates reversely, the helical blades 8 can make the cutting fluid move downwards to extrude the cutting fluid, so that the pressure of the cutting fluid is increased.

An extraction pump 5 is mounted on a machine tool 1 through bolts, the extraction pump 5 is a galileo/Galileo stainless steel SB-3-1 (explosion-proof) oil well pump, one end of the extraction pump 5 is communicated with a cutting fluid box 6, the other end of the extraction pump is communicated with a pipeline 4, the pipeline 4 is communicated with a spray head 3, the pipeline 4 and the spray head 3 are both fixedly mounted on a rack, the spray head 3 is used for spraying cutting fluid to equipment 2, and the cutting fluid cools the equipment 2.

The sprayer frequency acquisition module is used for acquiring the vibration frequency of the sprayer 3, the vibration sensor 10 is adopted for frequency acquisition in the embodiment, and the specific model of the vibration sensor 10 is 6011975IM12-04NPS-ZW 1. The vibration sensor 10 is bolted on the surface of the spray head 3, and the vibration sensor 10 is used for acquiring the vibration frequency of the spray head 3. When the cutting fluid sprayed by the spray head 3 is unevenly mixed, the spray head 3 is subjected to irregular impact; when the cutting fluid sprayed from the spray head 3 is uniformly mixed and is in a colloidal state, the vibration sensor 10 is uniformly impacted. The machine tool 1 is provided with a PLC controller by bolts, the specific controller adopts a single chip microcomputer of stm32f103c8t6, and the PLC controller is electrically connected with the vibration sensor 10 and the motor 11. The frequency acquisition module acquires 3 frequency data of the spray head every 30S, compares the frequency increase rate, and sends a stirring signal to the PLC when the frequency increase rate is larger than the set frequency increase rate.

Still include smog identification module, smog differentiatees the module and is used for 2 information of smoking of collection equipment, and the flash point when the cutting fluid is too low or the high temperature, the cutting fluid of splash can smoke, and the cutting fluid temperature too high can lead to the fact certain damage to processing equipment, and the cooling effect is poor. Smog identification module adopts hua be in Hikey970AI artificial intelligence development board in this embodiment, adopts camera 9 to carry out shooting equipment 2 picture, and camera 9 is C12 network camera, and camera 9 transmits data to hua be in Hikey970AI artificial intelligence development board. And the smoke identification module intercepts a frame of image of the monitoring video every 2 seconds, and identifies and fits the smoke group in the image through a K-Meas algorithm to obtain a suspected graph. The smoke recognition module is internally stored with a smoke group model trained according to various smoke group graphs through a convolutional neural network algorithm, and the smoke recognition module inputs the suspected graphs into the smoke group model to be fitted to obtain the degree of fitting of the smoke group. And outputting the identified smoke cluster when the degree of fit of the smoke cluster is greater than a first threshold value or the smoke rise rate is greater than a second threshold value. If a bolus is identified, a smoke signal is sent to the analysis module at 5 second intervals for 30 seconds.

When specifically using cutting fluid to cool down equipment 2, the frequency acquisition module is gathered the vibration frequency of shower nozzle 3, the frequency acquisition module gathers every 30S and acquires 3 frequency data of shower nozzle, then contrast frequency growth rate, when the frequency growth rate is greater than the frequency growth rate of settlement, send stirring signal on the PLC controller, the PLC controller receives stirring signal and makes motor 11 start, make motor 11 corotation, motor 11 drives (mixing) shaft 7 and helical blade 8 and stirs cutting fluid. The smoke distinguishing module collects smoke information of the equipment 2, the smoke distinguishing module intercepts one frame of image of the monitoring video every 2 seconds, and the suspected graph is obtained by identifying and fitting the smoke cluster in the image through a K-Meas algorithm. The smoke recognition module is internally stored with a smoke group model trained according to various smoke group graphs through a convolutional neural network algorithm, and the smoke recognition module inputs the suspected graphs into the smoke group model to be fitted to obtain the degree of fitting of the smoke group. And outputting the identified smoke cluster when the degree of fit of the smoke cluster is greater than a first threshold value or the smoke rise rate is greater than a second threshold value. If the cigarette mass is identified, a cigarette condition signal is sent to the analysis module at an interval period of 5 seconds within 30 seconds to the PLC controller, the PLC controller controls the reverse rotation to rotate the stirring shaft 7 and the spiral blades, so that the cutting fluid moves downwards, the pressure of the cutting fluid is increased, and the temperature reduction effect of the sprayed cutting fluid is enhanced. The stirring shaft 7 is controlled to stir the cutting fluid in real time through the frequency change of the spray head 3, so that the cutting fluid is uniformly mixed, and the effect of the cutting fluid is better; the smoke recognition module is used for analyzing the smoke emission condition of the cutting fluid at the equipment 2, so that the forward rotation or reverse rotation of the stirring shaft 7 and the spiral blades is controlled, when the stirring shaft 7 rotates forwards, the spiral blades 8 can enable the cutting fluid to move upwards, the cutting fluid is in contact with air, the gas amount in the cutting fluid is increased, and the cost is saved; when the stirring shaft 7 rotates reversely, the helical blades 8 can enable the cutting fluid to move downwards to extrude the cutting fluid, so that the pressure of the cutting fluid is increased, and the cooling effect of the cutting fluid is better; through controlling the (mixing) shaft, and then the temperature of control cutting fluid, cutting fluid temperature change reduces, prevents that the processing equipment from leading to the fact the damage because of cutting fluid temperature change is great, increases the life of processing equipment.

Comparative example 1: the difference between this example and example 1 is that an environment-friendly water-soluble metal working cutting fluid comprises: 26.0 percent of self-emulsifying synthetic grease, 25.0 percent of dicarboxylic acid, 25.0 percent of pH value regulator, 14.0 percent of softened water, 0.0 percent of dodecyl guanidine hydrochloride and 10.0 percent of alcohol ether carboxylic acid.

Comparative example 2: the difference between this example and example 1 is that an environment-friendly water-soluble metal working cutting fluid comprises: 26.0 percent of self-emulsifying synthetic grease, 25.0 percent of dicarboxylic acid, 25.0 percent of pH value regulator, 20.0 percent of softened water, 4.0 percent of dodecyl guanidine hydrochloride and 0.0 percent of alcohol ether carboxylic acid.

Comparative example 3: the difference between this example and example 1 is that an environment-friendly water-soluble metal working cutting fluid comprises: 26.0 percent of self-emulsifying synthetic grease, 25.0 percent of dicarboxylic acid, 25.0 percent of pH value regulator, 24.0 percent of softened water, 0.0 percent of dodecyl guanidine hydrochloride and 0.0 percent of alcohol ether carboxylic acid.

For the convenience of visual comparison, the components and contents in examples 1 to 4 and comparative examples 1 to 3 are tabulated and described as shown in table 1:

the cutting fluids prepared in all examples and comparative examples were subjected to an antibacterial test, 100mL of the cutting fluids prepared in examples 1 to 3 and comparative examples 1 to 3 were placed in 200mL glass containers, respectively, and left at 37 ℃ for 2 weeks, and then PH and microbial detection tests were performed to determine the putrefactive state of the test fluid based on the degree of decrease in PH and the degree of propagation of microorganisms. The specific results are shown in table 2:

serial number	pH value	Microbial count (number/ml)
			Example 1	3.5	60
Example 2	4	52
			Example 3	6.7	20
Comparative example 1	3	79
			Comparative example 2	4.5	24
Comparative example 3	3.1	72

The cutting fluid obtained by the method of example 1, example 2, example 3, example 4, comparative example 1, comparative example 2 and comparative example 3 is effectively inhibited from bacterial propagation by adding the dodecylguanidine hydrochloride, thereby slowing down the putrefaction rate of the cutting fluid and effectively improving the antibacterial property of the cutting fluid.

The growth change curve of the cutting fluid SRB bacteria in the comparative example 2 in 15 days is shown in the attached drawing 1, and the addition of the dodecyl guanidine hydrochloride can effectively inhibit the bacterial growth in the cutting fluid and improve the antibacterial property of the cutting fluid as can be proved by the examples 1 to 3 and the comparative examples 1 to 3. The fact that the addition of the dodecyl guanidine hydrochloride can effectively inhibit the growth of bacteria and improve the stability of the cutting fluid is proved, meanwhile, the alcohol ether carboxylic acid can overcome the defects of poor hard water resistance of an anionic surfactant and the dispersion capacity of a calcium soap of a nonionic surfactant, the alcohol ether carboxylic acid does not foam violently, has excellent electrolyte resistance stability in an acid-base environment, and can improve the hardening resistance of the cutting fluid; the environment is not polluted, and the environment is protected; effectively inhibiting the breeding of bacteria, reducing the corrosion to processing equipment and prolonging the service life of the processing equipment; the cutting fluid does not foam violently, so that better cooling and washing effects are achieved, the loss of the cutting fluid is reduced, and the cost is reduced; the cutting fluid is convenient and fast to recover.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.