Aluminum alloy cutting fluid preparation device and cutting fluid prepared thereby

Abstract

The present invention relates to the technical field of cutting fluids. The present invention discloses a device for preparing aluminum alloy cutting fluids and cutting fluids prepared by the device. The preparation device comprises a preparation tank, a multi-stage stirring component, a speed change mechanism, a linkage adjustment mechanism, and a homogenization channel. The multi-stage stirring component comprises a power source, a power shaft, a bottom stirring paddle, a middle stirring paddle, and an upper stirring paddle; and the homogenization channel is distributed inside the bottom stirring paddle. The cutting fluid comprises at least the following components in parts by weight: 19-26wt% of vegetable oil, 3-6wt% of lubricant, 2-5wt% of rust inhibitor, 1-2wt% of coupling agent, 7-11wt% of emulsifier, 11-15wt% of PH buffer, 0.5-1wt% of defoamer, 1-1.5wt% of corrosion inhibitor, 1-2wt% of antibacterial agent, and the balance is deionized water. The present application solves the problem of uneven mixing and dispersion in the existing aluminum alloy cutting fluid preparation process, and solves the problem of insufficient stability of the emulsifier in the aluminum alloy cutting fluid preparation process, easy stratification and demulsification, and affecting the cooling and lubrication effect.

Description

Technical Field

[0001] The invention relates to the technical field of cutting fluids, in particular to a device for preparing aluminum alloy cutting fluids and cutting fluids prepared thereby. Background Art

[0002] Aluminum alloy is a metal material widely used in automobile engines, transmissions, aviation equipment and other mechanical equipment industries. Therefore, the demand for cutting fluids for aluminum alloy processing is growing. Aluminum alloy cutting fluids are required to provide excellent lubricity and cooling required for high cutting speeds and high feed rates when processing aluminum materials, greatly improve the service life of tools and the surface finish of workpieces, and still be able to handle high-precision deep hole processing applications with ease. Traditional aluminum alloy cutting fluids are generally composed of mineral oil and emulsifiers, which have the disadvantages of being easily rancid in summer, difficult to dilute in winter, and having poor anti-rust effects. At the same time, they consume a lot of energy, have high production costs, and seriously harm the environment and human body. With the enhancement of environmental awareness, people have taken the synthesis of environmentally friendly aluminum alloy cutting fluids as an important research direction.

[0003] In the preparation process of traditional aluminum alloy cutting fluid, it is difficult to achieve uniform dispersion of raw materials in the base fluid due to the limitations of a single stirring method. Especially for formulas containing high-viscosity additives or insoluble ingredients, simple stirring often leads to excessive local concentration, agglomeration or precipitation, affecting the overall performance of the cutting fluid. In addition, in the preparation process of aluminum alloy cutting fluid, if the emulsifier is not fully dispersed or the droplets are too large, the stability of the emulsion will decrease, and stratification and demulsification will easily occur, affecting the cooling and lubrication effects, and reducing tool life and processing accuracy. And in a static state, aluminum alloy cutting fluid is prone to stratification and sedimentation due to density differences, especially when containing solid additives, which requires stirring again before use, adding additional operating costs and time. Summary of the invention

[0004] The object of the present invention is to provide an aluminum alloy cutting fluid preparation device and cutting fluid prepared thereby, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aluminum alloy cutting fluid preparation device and a cutting fluid prepared thereby, wherein the aluminum alloy cutting fluid preparation device comprises a preparation tank, and the preparation tank is provided with a feeding port and a discharging port, a safety pressure relief valve, and a sensor;

[0006] A multi-stage stirring component, comprising a driving source arranged at the top of the preparation tank, a power shaft vertically distributed inside the preparation tank, a coaxial rotating sleeve located at the bottom, middle and upper parts of the power shaft in sequence, and a bottom stirring paddle, a middle stirring paddle and an upper stirring paddle correspondingly installed on the coaxial rotating sleeve, the upper shaft portion of the power shaft is connected to the driving source, and the lower shaft portion is connected to the inner bottom of the preparation tank, a bearing bracket is installed on the coaxial rotating sleeve, and the bearing bracket is connected to the inner wall of the preparation tank;

[0007] The speed change mechanism includes three groups, which are respectively arranged in the coaxial rotating sleeves located at the bottom, middle and upper parts of the power shaft;

[0008] A linkage adjustment mechanism is arranged on the top of the preparation tank and is connected with three sets of speed change mechanisms;

[0009] A homogenizing channel is distributed inside the bottom stirring paddle, the inlet of the homogenizing channel is located on the inner upper end surface of the bottom stirring paddle, close to the position of the power shaft, and the outlet of the homogenizing channel is located on the outer edge side of the bottom stirring paddle.

[0010] As a preferred solution of the present invention, the three speed change mechanisms all include a first speed change assembly located on the upper side and a second speed change assembly located on the lower side, wherein the first speed change assembly includes a first speed change driving gear arranged on the power shaft, a first speed change gear ring arranged on the inner wall of the coaxial rotating sleeve, and a first transmission gear located between the first speed change driving gear and the first speed change gear ring;

[0011] The second speed change assembly comprises a second speed change driving gear arranged on the power shaft, a second speed change ring gear arranged on the inner wall of the coaxial rotating sleeve, and a second transmission gear located between the second speed change driving gear and the second speed change ring gear;

[0012] The first transmission gear and the second transmission gear are coaxially distributed up and down and are both connected to the linkage adjustment mechanism. Only one of the first transmission gear and the second transmission gear is meshed at the same time or both are not meshed.

[0013] As a preferred solution of the present invention, the linkage adjustment mechanism includes three linkage rods evenly distributed circumferentially and three linkage cylinders arranged on the top of the preparation tank. The upper ends of the three linkage rods are correspondingly connected to the three linkage cylinders, and the lower rods of the three linkage rods are correspondingly connected to the first transmission gear and the second transmission gear in the three sets of speed changing mechanisms.

[0014] As a preferred solution of the present invention, the bottom stirring paddle is a propeller-shaped structure, which includes four stirring blades evenly distributed on the outer surface of the coaxial rotating sleeve, and the four stirring blades are arranged to be inclined upward.

[0015] As a preferred solution of the present invention, three homogenizing channels are arranged inside each of the four stirring blades, and the three homogenizing channels share one inlet and correspond to three outlets;

[0016] The three homogenizing channels each include a first S-shaped channel, a second S-shaped channel, and a connecting channel connecting the first S-shaped channel with the second S-shaped channel. The first S-shaped channel is connected to the inlet, and the second S-shaped channel is connected to the outlet.

[0017] As a preferred solution of the present invention, the channel size of the connecting channel is smaller than the channel sizes of the first S-shaped channel and the second S-shaped channel.

[0018] As a preferred solution of the present invention, a microporous plate is provided at each outlet, and the microporous pore size of the microporous plate is 0.1 mm to 0.5 mm.

[0019] As a preferred solution of the present invention, the middle stirring paddle is an anchor-type paddle-shaped structure, which includes four anchor-type stirring blades evenly distributed on the outer surface of the coaxial rotating sleeve.

[0020] As a preferred solution of the present invention, the upper stirring paddle is a straight-blade worm gear paddle structure, which includes six straight stirring blades evenly distributed on the outer surface of the coaxial rotating sleeve.

[0021] An aluminum alloy cutting fluid is prepared by the above-mentioned aluminum alloy cutting fluid preparation device, and comprises at least the following components by weight: 19-26wt% of vegetable oil, 3-6wt% of lubricant, 2-5wt% of rust inhibitor, 1-2wt% of coupling agent, 7-11wt% of emulsifier, 11-15wt% of pH buffer, 0.5-1wt% of defoamer, 1-1.5wt% of corrosion inhibitor, 1-2wt% of antibacterial agent, and the balance is deionized water.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present application realizes multi-level mixing from bottom to top through the design of a multi-stage stirring paddle and blades of different levels and types, thereby ensuring uniform dispersion of additives in the base liquid, preventing agglomeration and precipitation, and solving the problem of uneven mixing and dispersion in the preparation process of existing aluminum alloy cutting fluids. It also improves the uniformity of aluminum alloy cutting fluids, ensures consistent cooling and lubrication effects during the processing, extends the service life of the tool, and improves the processing accuracy.

[0024] 2. The special design of the upper stirring paddle in this application can promote the surface circulation of the liquid, maintain the dynamic flow of the liquid in the tank even in a static state, effectively prevent stratification and sedimentation, reduce the stirring and pretreatment time of the cutting fluid before use, reduce maintenance costs, and improve the efficiency of the production line.

[0025] 3. The present application introduces a homogenizing channel, and through the homogenizing channel and the microporous plate structure, a high shear force is applied to the liquid to refine the droplets, thereby ensuring that the emulsifier molecules can evenly wrap the droplets to form a stable emulsified structure, thereby improving the long-term stability of the emulsion, and effectively solving the problem of insufficient emulsifier stability in the preparation process of aluminum alloy cutting fluid, which is prone to stratification and demulsification, affecting the cooling and lubrication effects, and reducing the tool life and processing accuracy.

[0026] 4. The present application reduces energy loss, enhances shear force, improves homogenization efficiency, simplifies structure and reduces cost by designing the homogenization channel and the bottom blade of the agitator into an integrated structure.

[0027] 5. This application reduces raw material waste through efficient mixing and homogenization processes, improves the use efficiency of aluminum alloy cutting fluid, and reduces product rework or scrapping due to unstable performance, which is in line with the principles of green manufacturing and sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a front view cross-sectional structural schematic diagram of the present invention;

[0030] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the upper stirring paddle, the speed changing mechanism and the linkage regulating mechanism in the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the speed change mechanism in the present invention (taking the speed change mechanism corresponding to the upper stirring paddle as an example);

[0033] Figure 6 It is a schematic diagram of the homogenization channel structure inside the stirring blade in the present invention;

[0034] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the stirring blade in the present invention;

[0035] Figure 8 It is a schematic diagram of the local structure on the outer edge side of the stirring blade in the present invention.

[0036] In the figure: 1, preparation tank; 11, feeding port; 12, discharge port; 13, safety pressure relief valve; 14, temperature sensor; 15, pressure sensor; 16, liquid level sensor;

[0037] Multi-stage stirring component; 21, driving source; 22, power shaft; 23, bottom stirring paddle; 231, stirring blade; 24, middle stirring paddle; 241, anchor stirring paddle; 25, upper stirring paddle; 251, straight stirring paddle; 26, coaxial rotating sleeve; 27, bearing bracket;

[0038] 3. Speed ​​change mechanism; 31. First speed change assembly; 311. First speed change driving gear; 312. First speed change ring gear; 313. First transmission gear; 32. Second speed change assembly; 321. Second speed change driving gear; 322. Second speed change ring gear; 323. Second transmission gear;

[0039] 4. linkage adjustment mechanism; 41. linkage rod; 42. linkage cylinder;

[0040] 5. Homogenizing channel; 51. Inlet; 52. Outlet; 53. First S-shaped channel; 54. Second S-shaped channel; 55. Connecting channel; 56. Microporous plate. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative work are within the scope of protection of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention. Example

[0042] See also Figures 1 to 8The present invention provides a technical solution: an aluminum alloy cutting fluid preparation device, comprising a preparation tank 1, wherein the preparation tank 1 is provided with a feeding port 11 and a discharging port 12, a safety pressure relief valve 13, and a sensor; a multi-stage stirring component 2, which comprises a driving source 21 arranged at the top of the preparation tank 1, a power shaft 22 vertically distributed inside the preparation tank 1, a coaxial rotating sleeve 26 located at the bottom, middle, and upper part of the power shaft 22 in sequence, and a bottom stirring paddle 23, a middle stirring paddle 24, and an upper stirring paddle 25 correspondingly installed on the coaxial rotating sleeve 26, wherein the upper shaft portion of the power shaft 22 is connected to the driving source 21, and the lower shaft portion is connected to the inner of the preparation tank 1. At the bottom, a bearing bracket 27 is installed on the coaxial rotating sleeve 26, and the bearing bracket 27 is connected to the inner wall of the preparation tank 1; a speed change mechanism 3, which includes three groups, is correspondingly arranged in the coaxial rotating sleeve 26 located at the bottom, middle and upper parts of the power shaft 22; a linkage adjustment mechanism 4 is arranged at the top of the preparation tank 1 and is connected to the three groups of speed change mechanisms 3; a homogenizing channel 5 is distributed inside the bottom stirring paddle 23, and the inlet 51 of the homogenizing channel 5 is located on the inner upper end surface of the bottom stirring paddle 23, close to the power shaft 22, and the outlet 52 of the homogenizing channel 5 is located on the outer edge side of the bottom stirring paddle 23.

[0043] In this embodiment, the preparation tank 1 adopts a cylindrical design with hemispherical heads at the top and bottom. This design can reduce dead angles, facilitate cleaning, and facilitate the dynamic circulation of the fluid. The feed port 11 is located on the left side of the top of the preparation tank 1 to facilitate the addition of raw materials. The discharge port 12 is located at the bottom center of the preparation tank 1 and is provided with a discharge valve to facilitate complete emptying of the tank body and subsequent cleaning and maintenance. The safety pressure relief valve 13 is installed on the right side of the top of the preparation tank 1. The safety pressure relief valve 13 is used to prevent the internal pressure of the preparation tank 1 from being too high to ensure safe operation. The sensor includes a temperature sensor 14, a pressure sensor 15 and a liquid level sensor 16. The temperature sensor 14, the pressure sensor 15 and the liquid level sensor 16 are provided in multiple and installed on the tank wall of the preparation tank 1 at different heights to monitor the preparation process in real time. In addition, the preparation tank 1 is also equipped with a jacket or coil for heating or cooling to control the temperature of the liquid in the tank. The temperature control device can be an electric heating rod, a steam jacket or a cooling water circulation system, depending on the required temperature range and preparation process requirements. Since they are all existing technologies, they will not be further elaborated here.

[0044] The multi-stage stirring component 2 can meet the different needs in the preparation process of aluminum alloy cutting fluid, namely preliminary mixing, enhanced dispersion and maintenance of circulation. Specifically, the bottom stirring paddle 23 is responsible for preliminary mixing, and the liquid is pushed upward by the strong thrust generated, driving the flow of liquid in the entire preparation tank 1; the middle stirring paddle 24 further enhances the dispersion effect and ensures that the additives are evenly distributed in the base liquid; the upper stirring paddle 25 is responsible for maintaining the circulation of the liquid inside the entire preparation tank 1, preventing stratification, and ensuring the stability and consistency of the aluminum alloy cutting fluid. Through this layered design, each layer of stirring paddles is optimized for a specific purpose, and under the joint action, the mixing efficiency and the quality of the emulsion can be effectively improved. In addition, the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 are installed on the same power shaft 22, which simplifies the structure while achieving synchronous rotation and improving energy utilization.

[0045] Furthermore, in this embodiment, three sets of speed change mechanisms 3 are respectively arranged between the bottom stirring paddle 23, the middle stirring paddle 24, the upper stirring paddle 25 and the power shaft 22, so that the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 can have different rotational angular velocities.

[0046] Specifically, the three speed change mechanisms 3 each include a first speed change assembly 31 located at the upper side and a second speed change assembly 32 located at the lower side. The first speed change assembly 31 and the second speed change assembly 32 correspond to two different rotation speeds respectively.

[0047] The first speed change assembly 31 includes a first speed change driving gear 311 disposed on the power shaft 22 , a first speed change ring gear 312 disposed on the inner sleeve wall of the coaxial rotating sleeve 26 , and a first transmission gear 313 located between the first speed change driving gear 311 and the first speed change ring gear 312 .

[0048] The second speed change assembly 32 includes a second speed change driving gear 321 disposed on the power shaft 22, a second speed change ring gear 322 disposed on the inner sleeve wall of the coaxial rotating sleeve 26, and a second transmission gear 323 located between the second speed change driving gear 321 and the second speed change ring gear 322;

[0049] The first transmission gear 313 and the second transmission gear 323 are coaxially distributed up and down and are both connected to the linkage adjustment mechanism 4. Only one of the first transmission gear 313 and the second transmission gear 323 is meshed at the same time or both are not meshed. Through the above technical solution, the meshing state of the first transmission gear 313 and the second transmission gear 323 is adjusted by the linkage adjustment mechanism 4. When the first transmission gear 313 is meshed, the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 rotate at the first speed change rotation angle; when the second transmission gear 323 is meshed, the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 rotate at the second speed change rotation angle; thereby realizing the free adjustment of the rotation angular velocity of the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25, and then being able to freely adjust the rotation angular velocity of the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 to be in the best state according to different working conditions (temperature, pressure, liquid level; different types of cutting fluid).

[0050] When the first transmission gear 313 and the second transmission gear 323 are not meshing, the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 can stop rotating; thereby achieving the purpose of selectively opening any one or more of the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25, and closing any one or more of the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 under certain working conditions (temperature, pressure, liquid level; different types of cutting fluid).

[0051] As a further improvement of this embodiment, the linkage adjustment mechanism 4 includes three linkage rods 41 evenly distributed circumferentially and three linkage cylinders 42 arranged on the top of the preparation tank 1. The upper ends of the three linkage rods 41 are correspondingly connected to the three linkage cylinders 42, and the lower rods of the three linkage rods 41 are correspondingly connected to the first transmission gear 313 and the second transmission gear 323 in the three sets of speed change mechanisms 3.

[0052] In this embodiment, the homogenizing channel 5 and the bottom stirring paddle 23 in the multi-stage stirring component 2 are an integrated structure. The present application can reduce the transition of the fluid between different components through integrated design, thereby reducing the energy loss caused by fluid dynamics changes. The homogenizing channel 5 is directly integrated on the bottom stirring paddle 23, which can ensure that the fluid is immediately subjected to the shear force of the homogenizing channel 5 when passing through the paddle, thereby improving the homogenization efficiency; combining the two components into one reduces the complexity of assembly, reduces manufacturing costs and potential failure points; the integrated design can utilize the internal space of the tank more compactly, making the entire stirring system more compact and efficient; through more effective homogenization and mixing, the quality consistency of the final product can be improved, which is particularly important for industries that require strict control of product characteristics.

[0053] Specifically, in this embodiment, the homogenizing channel 5 can generate shear force on the liquid passing through, so as to refine the large particles in the additive into small particles, achieve homogenization, increase its interface area, and not easily delaminate or break. Even after being placed for a long time, it can maintain a good emulsified state, thereby significantly improving the quality of the aluminum alloy cutting fluid and ensuring that it provides consistent cooling and lubrication performance during the cutting process. The inlet 51 on the homogenizing channel 5 is arranged on the inner upper end surface of the bottom stirring paddle 23, that is, close to the position of the power shaft 22. The outlet 52 of the homogenizing channel 5 is located on the outer side of the bottom stirring paddle 23. Through the design of the above structure, when the stirring paddle rotates, the liquid naturally enters the homogenizing channel 5 from the inlet 51 close to the inner side. After entering the homogenizing channel 5, it flows to the outlet 52 under the action of centrifugal force inside the homogenizing channel 5. During the flow, the liquid is subjected to the action of shear force, and the large particles are broken into smaller droplets. The liquid re-enters the tank body from the outlet 52 of the homogenizing channel 5 in a relatively gentle state, mixes with other liquids in the tank body, and forms a uniform emulsion.

[0054] In addition, the outlet 52 of the homogenizing channel 5 is designed to face upward, which can help to guide the homogenized liquid directly to the top or middle of the preparation tank 1, which can promote rapid mixing with other liquids in the preparation tank 1, especially when the upper stirring paddle 25 is used to maintain the flow of liquid. In addition, the upward flowing liquid can use its own kinetic energy to reduce additional energy consumption; it is very suitable for occasions where the upper stirring paddle 25 in the tank design of this application plays a key role in maintaining the overall circulation flow.

[0055] As a further improvement of this embodiment, the bottom stirring paddle 23 is a propeller-shaped structure, which includes four stirring blades 231 evenly distributed on the outer surface of the coaxial rotating sleeve 26, and the four stirring blades 231 are arranged to be inclined upward.

[0056] In the above technical solution, the four stirring blades 231 can generate a strong force to push the liquid upward when working, and at the same time generate a strong radial movement to quickly mix the additives at the bottom with the base liquid. The inclination angle of the stirring blades 231 helps to lift the liquid, form a vertical flow, and promote the liquid to rise from the bottom of the preparation tank 1, thereby achieving preliminary mixing.

[0057] As a further improvement of this embodiment, three homogenizing channels 5 are arranged inside the four stirring blades 231, and the three homogenizing channels 5 share one inlet 51, corresponding to three outlets 52. In this embodiment, a total of twelve homogenizing channels 5 are arranged to accelerate the homogenization efficiency and improve the homogenization effect. The three homogenizing channels 5 each include a first S-shaped channel 53, a second S-shaped channel 54, and a connecting channel 55 that connects the first S-shaped channel 53 with the second S-shaped channel 54, the first S-shaped channel 53 is connected to the inlet 51, and the second S-shaped channel 54 is connected to the outlet 52.

[0058] In the above technical solution, the shapes of the first S-shaped channel 53 and the second S-shaped channel 54 can increase the time for the fluid to pass through the channel, thereby increasing the shear force and mixing effect, which helps to more effectively refine the droplets.

[0059] As a further improvement of this embodiment, the channel size of the connecting channel 55 is smaller than the channel sizes of the first S-shaped channel 53 and the second S-shaped channel 54 .

[0060] In the above technical solution, the connecting channel 55 is a narrow channel relative to the first S-shaped channel 53 and the second S-shaped channel 54 , and the shapes of the first S-shaped channel 53 and the second S-shaped channel 54 are matched to further improve the homogenization effect.

[0061] As a further improvement of this embodiment, a microporous plate 56 is provided at each outlet 52 , and the microporous aperture size of the microporous plate 56 is 0.1 mm to 0.5 mm.

[0062] In the above technical solution, the microporous plate 56 is used to further refine the droplets and increase the shear force of the liquid.

[0063] As a further improvement of this embodiment, the middle stirring paddle 24 is an anchor-type paddle-shaped structure, which includes four anchor-type stirring blades 241 evenly distributed on the outer surface of the coaxial rotating sleeve 26 .

[0064] In the above technical solution, the middle stirring paddle 24 can provide the circulation flow and turbulence required for mixing the aluminum alloy cutting fluid to ensure uniform distribution and temperature consistency of the materials in the preparation tank 1. The fluid dynamic effect generated by the rotation of the middle stirring paddle 24 enables the materials in the preparation tank 1 to be in uniform contact, promotes the chemical reaction, and helps transfer and control heat.

[0065] As a further improvement of this embodiment, the upper stirring paddle 25 is a straight-blade worm gear paddle structure, which includes six straight stirring paddles 251 evenly distributed on the outer surface of the coaxial rotating sleeve 26 .

[0066] The working process of the present invention is as follows:

[0067] When in use, check whether the preparation tank 1 and its components are in good condition, confirm that the preparation tank 1 is clean and free of foreign matter, open the feed port 11, and add the base liquid and other raw materials and additives into the preparation tank 1 in sequence according to the formula amount; adjust the speed: initially, the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 are in the first speed, that is, the first transmission gear 313 in the three speed change mechanisms is in a meshing state. When it is necessary to adjust to the second speed: start the linkage cylinder 42 corresponding to the adjustment stirring paddle, and move the linkage rod 41 downward to disengage the first transmission gear 313 and the second transmission gear 323 to be in a meshing state; when it is necessary to close one or more stirring paddles, just start the corresponding linkage cylinder 42 to disengage the first transmission gear 313 and the second transmission gear 323.

[0068] Start the driving source 21, drive the power shaft 22 to start rotating, the power shaft 22 drives the bottom stirring paddle 23, the middle stirring paddle 24, and the upper stirring paddle 25 to rotate synchronously through the corresponding speed change mechanism 3; the bottom stirring paddle 23 preliminarily mixes the raw materials, the liquid is pushed upward, and enters the homogenization channel 5 through the inlet 51, and the additive particles are refined after passing through the homogenization channel 5 to form a preliminary emulsion, and are discharged into the preparation tank 1 through the outlet 52; the middle stirring paddle 24 further enhances the dispersion effect to ensure that the additive is evenly distributed in the base liquid; the upper stirring paddle 25 maintains the circulation of the liquid inside the entire preparation tank 1 to prevent stratification and ensure uniform mixing. During the preparation process, the temperature sensor 14, the pressure sensor 15, and the liquid level sensor 16 monitor the conditions in the preparation tank 1 in real time; after the preparation is completed, open the discharge valve on the discharge port 12 to discharge the prepared aluminum alloy cutting fluid for packaging or direct use. After long-term use, the preparation tank 1 can be cleaned: empty the preparation tank 1 and close all valves; use clean water or other suitable cleaning agents to clean the preparation tank 1 and the stirring parts to ensure sanitary conditions for the next use. Example

[0069] An aluminum alloy cutting fluid is prepared by an aluminum alloy cutting fluid preparation device described in Example 1, and comprises at least the following components, in parts by weight: 19-26wt% of vegetable oil, 3-6wt% of lubricant, 2-5wt% of rust inhibitor, 1-2wt% of coupling agent, 7-11wt% of emulsifier, 11-15wt% of pH buffer, 0.5-1wt% of defoamer, 1-1.5wt% of corrosion inhibitor, 1-2wt% of antibacterial agent, and the balance is deionized water.

[0070] After the aluminum alloy cutting fluid was prepared, its performance was tested and it was found that it was not prone to stratification and demulsification, and its lubrication and anti-rust properties were significantly improved.

[0071] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for preparing aluminum alloy cutting fluid, characterized in that: include, A preparation tank (1), wherein the preparation tank (1) is provided with a feeding port (11), a discharging port (12), a safety pressure relief valve (13), and a sensor; A multi-stage stirring component (2), comprising a driving source (21) arranged at the top of the preparation tank (1), a power shaft (22) vertically distributed inside the preparation tank (1), a coaxial rotating sleeve (26) located at the bottom, middle and upper parts of the power shaft (22) in sequence, and a bottom stirring paddle (23), a middle stirring paddle (24) and an upper stirring paddle (25) correspondingly mounted on the coaxial rotating sleeve (26), the upper shaft portion of the power shaft (22) being connected to the driving source (21), and the lower shaft portion being connected to the inner bottom of the preparation tank (1), a bearing bracket (27) being mounted on the coaxial rotating sleeve (26), and the bearing bracket (27) being connected to the inner wall of the preparation tank (1); A speed change mechanism (3) comprising three groups, which are correspondingly arranged in coaxial rotating sleeves (26) located at the bottom, middle and upper parts of the power shaft (22); A linkage adjustment mechanism (4) is arranged on the top of the preparation tank (1) and is connected to the three sets of speed change mechanisms (3); A homogenizing channel (5) is arranged inside the bottom stirring paddle (23), wherein the inlet (51) of the homogenizing channel (5) is located on the inner upper end surface of the bottom stirring paddle (23), close to the power shaft (22), and the outlet (52) of the homogenizing channel (5) is located on the outer edge side of the bottom stirring paddle (23); The three speed change mechanisms (3) each comprise a first speed change assembly (31) located on the upper side and a second speed change assembly (32) located on the lower side, wherein the first speed change assembly (31) comprises a first speed change driving gear (311) arranged on the power shaft (22), a first speed change ring gear (312) arranged on the inner sleeve wall of the coaxial rotating sleeve (26), and a first transmission gear (313) located between the first speed change driving gear (311) and the first speed change ring gear (312); The second speed change assembly (32) comprises a second speed change driving gear (321) arranged on the power shaft (22), a second speed change ring gear (322) arranged on the inner sleeve wall of the coaxial rotating sleeve (26), and a second transmission gear (323) located between the second speed change driving gear (321) and the second speed change ring gear (322); The first transmission gear (313) and the second transmission gear (323) are coaxially distributed up and down and are both connected to the linkage adjustment mechanism (4), and only one of the first transmission gear (313) and the second transmission gear (323) is meshed at the same time or both are not meshed; The linkage adjustment mechanism (4) comprises three linkage rods (41) uniformly distributed in the circumferential direction and three linkage cylinders (42) arranged on the top of the preparation tank (1); the upper ends of the three linkage rods (41) are correspondingly connected to the three linkage cylinders (42); and the lower rods of the three linkage rods (41) are correspondingly connected to the first transmission gear (313) and the second transmission gear (323) in the three sets of speed change mechanisms (3); The bottom stirring paddle (23) is a propeller-shaped structure, comprising four stirring blades (231) evenly distributed on the outer surface of the coaxial rotating sleeve (26), and the four stirring blades (231) are arranged to be inclined upward; Three homogenizing channels (5) are arranged inside each of the four stirring blades (231), and the three homogenizing channels (5) share one inlet (51) and correspond to three outlets (52); The three homogenizing channels (5) each comprise a first S-shaped channel (53), a second S-shaped channel (54), and a connecting channel (55) connecting the first S-shaped channel (53) with the second S-shaped channel (54), wherein the first S-shaped channel (53) is connected to the inlet (51), and the second S-shaped channel (54) is connected to the outlet (52); The channel size of the connecting channel (55) is smaller than the channel sizes of the first S-shaped channel (53) and the second S-shaped channel (54).

2. The aluminum alloy cutting fluid preparation device according to claim 1, characterized in that: A microporous plate (56) is provided at each outlet (52), and the microporous pore size on the microporous plate (56) is 0.1 mm to 0.5 mm.

3. The aluminum alloy cutting fluid preparation device according to claim 1, characterized in that: The middle stirring paddle (24) is an anchor-type paddle-shaped structure, comprising four anchor-type stirring blades (241) evenly distributed on the outer surface of the coaxial rotating sleeve (26); The upper stirring paddle (25) is a straight-blade worm gear paddle-shaped structure, comprising six straight stirring paddles (251) evenly distributed on the outer surface of the coaxial rotating sleeve (26).

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