CN115466641A

CN115466641A - Special gear oil for vertical mill, and machining method and device

Info

Publication number: CN115466641A
Application number: CN202210992981.7A
Authority: CN
Inventors: 陆水; 邹帅; 窦明远; 冯清; 杨靖; 李康春; 邓富康; 黄福川
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-13
Anticipated expiration: 2042-08-18
Also published as: CN115466641B

Abstract

The application relates to gear oil special for a vertical mill, a processing method and a device, wherein the gear oil special for the vertical mill comprises the following components in percentage by mass: base oil: 84.72 to 89.25 percent of base oil, wherein the base oil is formed by compounding 55 to 60 percent of III base oil and 40 to 45 percent of triphenyl phosphate in percentage by mass; antioxidant: 2.0 to 3.0 percent; metal deactivators: 0.02 to 0.08 percent; viscosity index improver: 1.0% -2.0%; extreme pressure agent: 3.0% -4.0%; an antiwear agent: 4.0% -5.0%; antirust agent: 0.02% -0.12%; breaking the emulsifier: 0.05 percent to 0.08 percent; friction modifiers: 0.66 to 1.0 percent. The technical scheme of this application has solved the problem that the lubricating oil of vertical mill among the prior art became invalid easily effectively.

Description

Special gear oil for vertical mill, and machining method and device

Technical Field

The application relates to the technical field of lubricating oil, in particular to special gear oil for a vertical mill, a machining method and a device.

Background

The vertical mill is composed of a machine shell and a machine base, a grinding roller and a grinding disc, a pressurizing device, a transmission device, a lubricating system and the like. The main difference is the different shapes of the grinding disks, and the specifications of the grinding machine are usually expressed by the diameter of the grinding disk. The term of art for vertical mills is known as roller mills. Since this mill works in a standing manner, it is commonly called a vertical mill, also called a grinding mill.

The grinding equipment is used for crushing solid materials into smaller particles from block materials under the action of mechanical force, is widely applied to grinding in industries such as building materials, metallurgy, mines, ceramics and the like, and is used for grinding various non-flammable and combustible mineral materials with the Mohs hardness of below 9 and the humidity of below 6 percent, such as cement (raw clinker), limestone, ceramics, glass and other thousands of materials. Commonly used milling machines are: ball mills, vertical mills, hammer mills, vibratory mills and jet mills. The crushing modes are different due to different properties of materials and different required crushing fineness. The basic crushing modes include extrusion crushing, impact crushing, friction shearing crushing, splitting crushing and the like according to different modes of applying external force.

Large vertical mills are widely used for grinding ground calcium carbonate in general. The device mainly comprises a grinding roller assembly, a grinding disc assembly, a hydraulic assembly, a transmission arm assembly, a main speed reducer lubricating station, a PLC (programmable logic controller) electric control cabinet and the like. The calcium carbonate vertical mill integrates crushing, drying, grinding, grading and conveying into a whole, and has a vertical structure and a compact layout. Starting from various angles such as grinding efficiency, material drying, wearing part abrasion, maintenance and replacement of accessories and the like, the purposes of lower energy consumption, stronger drying capacity, lower core part abrasion and more convenient maintenance are achieved, and the equipment operation cost of a client is saved; repeated grinding can be reduced, the granularity and chemical components of the product are better controlled, and the quality of the product is convenient to stabilize; meanwhile, the grinding roller and the grinding disc are not in direct contact, so that the iron content in the product is low, and the whiteness and the purity of the material are effectively ensured; and works under negative pressure without dust overflow; an automatic control system is equipped, free switching between remote control and field control is realized, operation is simple and convenient, and labor is saved.

The working principle of the large-scale vertical mill is as follows: the vertical mill crushes the material bed by using the relative movement of the grinding roller and the grinding disc, and the fineness of the material is reduced along with the increase of the grinding pressure of the grinding roller; the ground material is dried and taken up by hot air, and is classified in the mill by a classification device on the ground material, and the coarse powder falls into a grinding disc to be crushed again; the qualified fine powder is sent out by wind and ground to a bag dust collector for collection.

The spiral bevel gear-planetary gear is the most important transmission device in the power transmission device of a large vertical mill. The transmission mechanism has the advantages of compact structure, small volume, light weight, high transmission efficiency, large differential ratio and low noise. The box body is a cylindrical closed structure, the outer wall of the box body only bears pressure, and the transmission power of the box body can reach 4100kw. The vertical mill can transmit the motion and power between any two shafts by using a gear mechanism; meanwhile, the gear has the characteristics of large transmission power range, high efficiency and the like. In any gear transmission, if the gear flanks are directly meshed, the gear flanks may become adhered to each other, and the gear flanks will wear, heat, burn, and even weld, resulting in gear failure. Therefore, gear oil is needed to separate the working surfaces of the gear oil to ensure the normal operation of the gear mechanism, and the gear oil mainly plays roles of preventing the abrasion of the tooth surfaces, taking away heat generated by the friction of the tooth surfaces, isolating the contact of the tooth surfaces with air, moisture and dust, avoiding the rusting, corrosion and scratch of the gears and the like. Statistics show that about 54% of mechanical failures are caused by lubrication problems, wherein insufficient lubrication and improper lubrication account for 34.4% and 19.6%, respectively, and the importance of gear oil for gear transmission is seen.

The lubricating mechanism of the gear is that the lubricant enters the working position of the gear meshing to form an effective lubricating film, so that the meshing surfaces are separated, and the motion friction of the meshing tooth surfaces is changed into the internal friction of the lubricating film, thereby achieving the purposes of reducing friction, reducing abrasion and prolonging the service life of the large-scale vertical mill. However, the lubricating oil in the prior art has unsatisfactory antiwear effect in the use process of the vertical mill, and particularly after the vertical mill is used for a period of time in a high-temperature, high-humidity and dusty environment, the lubricating performance of the lubricating oil is seriously reduced, so that the equipment is seriously abraded and even blocked.

Disclosure of Invention

The application provides special gear oil for a vertical mill, a machining method and a machining device, which are used for solving the problem that lubricating oil of the vertical mill in the prior art is easy to lose efficacy.

In order to solve the problems, the application provides the gear oil special for the vertical mill, which comprises the following components in percentage by mass:

base oil: 84.72 to 89.25 percent of base oil, wherein the base oil is a compound of 55 to 60 percent of III-class base oil and 40 to 45 percent of triphenyl phosphate in mass ratio;

antioxidant: 2.0% -3.0%;

metal deactivators: 0.02% -0.08%;

viscosity index improver: 1.0% -2.0%;

extreme pressure agent: 3.0% -4.0%;

an antiwear agent: 4.0% -5.0%;

antirust agent: 0.02 to 0.12 percent;

breaking the emulsifier: 0.05 to 0.08 percent;

friction modifier: 0.66 to 1.0 percent.

Furthermore, the base oil is a compound of 55-60% of III base oil and 40-45% of triphenyl phosphate in mass ratio.

Furthermore, the antioxidant is the compound of 60 to 70 mass percent of alkaline zinc dithiophosphate dioctyl and 30 to 40 mass percent of 2, 6-ditert-butyl-p-cresol.

Further, the metal deactivator is a composite of N' -di-n-butylaminomethylenebenzotriazole and alkyldiphenylamine in an amount of 30 to 40% by mass and 60 to 70% by mass.

Further, the viscosity index improver is polyisobutylene having a molecular weight of 1300; the extreme pressure agent is vulcanized lard oil; the friction modifier is benzotriazole fatty amine salt.

Furthermore, the antiwear agent is a compound of 50-60% of sulfurized isobutylene and 40-50% of di-n-butyl phosphite by mass ratio.

Further, the antirust agent is a compound of any two or more of phosphate amine salt, alkenyl succinic acid, alkaline dinonyl naphthalene barium sulfonate and barium petroleum sulfonate.

Furthermore, the anti-emulsifier is a composite of 40-50% of propylene oxide, 20-35% of amine and epoxy compound condensate and 25-30% of polyether high molecular compound by mass ratio.

According to another aspect of the application, a processing method of the gear oil special for the vertical mill is further provided, wherein the gear oil special for the vertical mill is the gear oil special for the vertical mill, and the processing method comprises the following steps:

s10, adding 40-50% of composite base oil into a reaction kettle, stirring for 30min, and heating to 60-70 ℃;

s20, preparing 10% of mother liquor from an antioxidant and a metal deactivator, adding the mother liquor into a reaction kettle, and stirring and blending for 30-60 min;

s30, pouring the residual composite base oil into a reaction kettle, continuously stirring for 30min, and cooling the mixed oil in the reaction kettle to 50-60 ℃;

s40, keeping the temperature of 50-60 ℃, sequentially adding the viscosity index improver, the antirust agent, the extreme pressure agent, the antiwear agent, the demulsifier and the oiliness agent into the reaction kettle, and circularly stirring for 3-4 hours;

and S50, filtering under the pressure of 0.1-0.2 MPa to obtain the gear oil special for the vertical mill.

According to another aspect of the present application, there is provided a device for processing gear oil special for a vertical mill, the gear oil special for a vertical mill being the above-mentioned gear oil special for a vertical mill, the device including: a reaction kettle, a filter, a pump and a collecting container which are connected in sequence.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

according to the technical scheme, the formula of the lubricating oil adopts base oil: 84.72-89.25%, wherein the base oil is a compound of 55-60% of III group base oil and 40-45% of triphenyl phosphate. Antioxidant: 2.0% -3.0%; metal deactivators: 0.02 to 0.08 percent; viscosity index improver: 1.0% -2.0%; extreme pressure agent: 3.0% -4.0%; an antiwear agent: 4.0% -5.0%; antirust agent: 0.02% -0.12%; breaking the emulsifier: 0.05 percent to 0.08 percent; friction modifier: 0.66 to 1.0 percent. The lubricating oil with the components has high kinematic viscosity and is suitable for the vertical mill, and in addition, the lubricating oil has high bearing capacity, so that the vertical mill can be effectively lubricated, and the abrasion of the vertical mill is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 shows a schematic diagram of a processing method of gear oil special for a vertical mill according to the application;

fig. 2 shows a schematic process structure diagram of the device for processing gear oil special for the vertical mill.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In various forms of gear transmission, the teeth of the gear, from the beginning of their engagement to their disengagement, all have different forms of friction, namely sliding friction and rolling friction. The sliding friction is generated due to the fact that the relative speeds of the meshing surfaces are not consistent, certain reaction force can be generated, and meanwhile abrasion of an object can be caused. Rolling friction exists when the relative speeds of the meshing tooth surfaces are equal, so that the abrasion effect generated during friction can be reduced, but sufficient reaction force cannot be generated.

With the development of science and technology, the manufacturing technology of the gear transmission mechanism of the large vertical mill is continuously improved, and the requirements of the gear manufacturing on parameters such as precision, bearing capacity and the like are higher and higher. The gear transmission device is gradually developing towards miniaturization, high power, heavy load, high torque, super high speed and other directions, and meanwhile, the use working conditions of gear transmission are more and more harsh. For example, in the use environments of metallurgy, mines, marine engineering, heavy chemical engineering and extreme conditions, the gear transmission mechanism is exposed to high temperature, high humidity, random impact load, dust, strong vibration and extreme weather and geographical conditions for a long time, and the gear box usually has a little water and water vapor permeation. After gear oil and water in the gear box are mixed, the gear oil is easy to emulsify under the condition that the gear is in high-speed operation through violent vibration. After the gear oil circulates in a system, the oil-water separation can not be rapidly demulsified in the gear box, and the emulsified gear oil can seriously influence the formation of a lubricating oil film, so that the gear can be scratched, corroded and abraded to a certain extent, and even can be subjected to serious fusion welding. Experiments and practices prove that the lubricating oil has good emulsification resistance, corrosion resistance and high bearing capacity and is special for large-scale vertical mills.

Group III base oils have the advantages of low volatility, high viscosity index, excellent additive susceptibility, improved thermal and oxidative stability, and fuel economy. But also has some minor disadvantages, since the polar content is low and the solubility to the additive is slightly poor. According to the application, triphenyl phosphate is adopted as a cosolvent, so that the solubility of the additive in the III base oil can be improved, and good performances such as abrasion resistance, seal expansion, metal passivation and the like are provided.

In the technical scheme of the application, the metal deactivator is not used independently, but is usually compounded with the antioxidant, so that the metal deactivator not only has a synergistic effect, but also can reduce the using amount of the antioxidant. The metal deactivator is compounded with N' -di-n-butylaminomethylene benzotriazole in the weight ratio of 30-40% and alkyl diphenylamine in 60-70%, and has excellent antioxidant, copper corrosion inhibiting and metal deactivating performance. The zinc salt is compounded with phenol antioxidant to have outstanding synergistic effect and obviously improve the oxidation resistance of the gear oil of the speed reducer, so that 60-70 percent of alkaline zinc salt of sulfur, phosphorus and dioctyl and 30-40 percent of 2, 6-ditert-butyl-p-cresol are compounded to be used as the antioxidant. The viscosity index improver adopts low molecular weight polyisobutylene, is a non-volatile liquid with stable chemical properties, and can not form residues after high-temperature volatilization or thermal decomposition. The extreme pressure agent adopts vulcanized lard oil, and has the characteristics of low smell, high viscosity, thick oil film, high wear resistance and no corrosion. The antiwear agent is compounded by 50-60% of sulfurized isobutylene and 40-50% of di-n-butyl phosphite by mass ratio, has the characteristic of good abrasion resistance, but has higher activity, and can cause corrosive wear. The present application adds a rust inhibitor to inhibit. The rust inhibitor adopts the composition of more than two of phosphate amine salt, alkenyl succinic acid, alkaline dinonyl barium naphthalene sulfonate and barium petroleum sulfonate, and has the performances of penetrating rust removal, corrosion inhibition, metal protection and the like. The anti-emulsifier is compounded by 40 to 50 mass percent of propylene oxide, 20 to 35 mass percent of amine and epoxy compound condensate and 25 to 30 mass percent of polyether high molecular compound; has excellent demulsifying performance and defoaming effect. The friction improver adopts benzotriazole fatty amine salt, has multiple effects of oiliness, rust prevention, oxidation resistance and the like, can reduce friction and abrasion, can be compounded with a sulfur-containing extreme pressure agent, and has good synergistic effect.

According to the method, III-type base oil and triphenyl phosphate are compounded to be used as base oil of the special gear oil for the large vertical mill, an entropy weight fuzzy comprehensive evaluation method is adopted, the functions and characteristics of various additives are pertinently carried out, mathematical model simulation calculation and screening are carried out, the additive usage amount with the best cost performance is obtained, then raw materials are put into a reaction kettle according to the method, and finally the special gear oil for the large vertical mill is obtained.

Application of entropy weight fuzzy comprehensive evaluation method to gear oil formula optimization link

1. Building feature matrices

The invention mainly considers four sub-indexes of flash point (opening)/DEG C, viscosity index, sintering load (PD)/N and abrasion spot diameter D (mm), and arranges 3 groups of tests through a standard orthogonal table. Thus, the feature matrix position X = (X) _ij ) _3×4 The construction was as follows:

the flash point, the viscosity index and the sintering load in the 4 sub-indexes are benefit-type indexes and wear-scar diameter cost-type indexes;

(1) For benefit type indicators:

(2) For cost-type indices:

in the formula, max (x) _ij )、min(x _ij ) Respectively, X = (X) _ij ) _n×m The maximum and minimum values of each element in the jth column in the feature matrix, namely the maximum and minimum data of each scheme under the j index. By the transformation, all have y of more than or equal to 0 _ij 1 or less (i =1,2, \ 8230;, m), and eachThe category indexes are equalized into forward indexes, the optimal value is 1, and the worst value is 0.

Obtaining a normalized matrix:

2. determination of entropy and entropy weights

Quilt type

Obtaining:

re-routing type

Obtaining:

H＝(h ₁ h ₂ h ₃ h ₄ )＝(0.61248 0.57922 0.62365 0.51154)

3. calculating the weight of each index:

(d _j ＝1-h _j ) The following can be obtained:

w＝(0.23162 0.25150 0.22494 0.29195)

4. construction of fuzzy comprehensive evaluation model

And obtaining a fuzzy comprehensive evaluation model by using the fuzzy mathematical theory according to the Y and the w as follows:

B＝wY ^T ＝(0.23162 0.87284 0.44790)

the obtained scheme corresponding to the maximum value element in the B is the optimal scheme, namely example 2 is the optimal scheme of the invention.

The special gear oil for the vertical mill comprises the following components in percentage by mass: base oil: 84.72 to 89.25 percent of base oil, wherein the base oil is the composition of 55 to 60 percent of III base oil and 40 to 45 percent of triphenyl phosphate. Antioxidant: 2.0 to 3.0 percent. Metal deactivators: 0.02 to 0.08 percent. Viscosity index improver: 1.0 to 2.0 percent. Extreme pressure agent: 3.0 to 4.0 percent. An antiwear agent: 4.0 to 5.0 percent. Antirust agent: 0.02 to 0.12 percent. Breaking the emulsifier: 0.05 to 0.08 percent. Friction modifiers: 0.66 to 1.0 percent.

According to the technical scheme, the formula of the lubricating oil adopts the following base oil: 84.72-89.25%, wherein the base oil is a compound of 55-60% of III group base oil and 40-45% of triphenyl phosphate. Antioxidant: 2.0% -3.0%; metal deactivators: 0.02% -0.08%; viscosity index improver: 1.0% -2.0%; extreme pressure agent: 3.0% -4.0%; an antiwear agent: 4.0% -5.0%; antirust agent: 0.02% -0.12%; breaking the emulsifier: 0.05 percent to 0.08 percent; friction modifiers: 0.66 to 1.0 percent. The lubricating oil with the components has high kinematic viscosity and is suitable for the vertical mill, and in addition, the lubricating oil has good bearing capacity, so that the vertical mill can be effectively lubricated, and the abrasion of the vertical mill is reduced.

In the technical scheme of the application, the extreme pressure agent is vulcanized lard oil; the friction modifier is benzotriazole fatty amine salt. The antioxidant is a compound of 60 to 70 mass percent of alkaline zinc dioctyl dithiophosphate and 30 to 40 mass percent of 2, 6-di-tert-butyl-p-cresol. The metal deactivator is a composite of N' -di-n-butylaminomethylenebenzotriazole and 60-70% of alkyldiphenylamine in a mass ratio of 30-40%. The viscosity index improver is polyisobutylene with a molecular weight of 1300. The antiwear agent is a compound of 50-60% of sulfurized isobutylene and 40-50% of di-n-butyl phosphite by mass ratio. The antirust agent is a compound of any two or more of phosphate amine salt, alkenyl succinic acid, alkaline dinonyl naphthalene barium sulfonate and barium petroleum sulfonate. The anti-emulsifier is a composite of 40-50% of propylene oxide, 20-35% of amine and epoxy compound condensate and 25-30% of polyether high molecular compound by mass ratio.

Example 1:

the material is prepared by blending the following raw material components in percentage by mass:

the sum of the above components is 100%.

Example 1 preparation method:

(1) Weighing the components according to the proportion, adding 40% of composite base oil into a reaction kettle, stirring for 30min, and heating to 60 ℃; (2) Firstly, preparing 10 percent (m) of mother liquor by using an antioxidant and a metal deactivator, adding the mother liquor into a reaction kettle, and stirring and blending for 30min; (3) Pouring the residual composite base oil into a reaction kettle, continuously stirring for 30min, and cooling the mixed oil in the reaction kettle to 50 ℃; (4) Keeping the temperature at 50 ℃, sequentially adding the viscosity index improver, the antirust agent, the extreme pressure agent, the antiwear agent, the demulsifier and the oiliness agent into the reaction kettle in sequence, and circularly stirring for 3 hours; (5) And finally, filtering under the pressure of 0.1MPa to obtain the special gear oil for the large vertical mill.

Example 2:

the sum of the above components is 100%. The content of the document is mass percent.

Example 2 preparation method:

(1) Weighing the components according to the proportion, adding 45% of composite base oil into a reaction kettle, stirring for 30min, and heating to 65 ℃; (2) Firstly, preparing 10 percent (m) of mother liquor by using an antioxidant and a metal deactivator, adding the mother liquor into a reaction kettle, and stirring and blending for 45min; (3) Pouring the residual composite base oil into a reaction kettle, continuously stirring for 30min, and cooling the mixed oil in the reaction kettle to 55 ℃; (4) Keeping the temperature at 55 ℃, sequentially adding the viscosity index improver, the antirust agent, the extreme pressure agent, the antiwear agent, the demulsifier and the oiliness agent into the reaction kettle in sequence, and circularly stirring for 3.5 hours; (5) And finally, filtering under the pressure of 0.15MPa to obtain the special gear oil for the large vertical mill.

Example 3:

the sum of the above components is 100%.

Example 3 preparation method:

(1) Weighing the components according to the proportion, adding 50% of composite base oil into a reaction kettle, stirring for 30min, and heating to 70 ℃; (2) Firstly, preparing 10 percent (m) of mother liquor from an antioxidant and a metal deactivator, adding the mother liquor into a reaction kettle, and stirring and blending for 60min; (3) Pouring the residual composite base oil into a reaction kettle, continuously stirring for 30min, and cooling the mixed oil in the reaction kettle to 60 ℃; (4) Keeping the temperature at 60 ℃, sequentially adding the viscosity index improver, the antirust agent, the extreme pressure agent, the antiwear agent, the demulsifier and the oiliness agent into the reaction kettle in sequence, and circularly stirring for 4 hours; (5) And finally, filtering under the pressure of 0.2MPa to obtain the special gear oil for the large vertical mill.

Test examples

The gear oil special for the large vertical mill obtained in the examples 1 to 3 is subjected to performance detection, and a similar gear oil product is compared, and the results are shown in the following table:

as can be seen from the table: the invention relates to an optimal scheme of a formula technology of example 2 of special gear oil for a large vertical mill.

The following tests were performed on example 2 and a similar gear oil product:

1. the gear oil of example 2 was tested in a comparative test with a similar gear oil product using an MM-200 model wear tester. The upper sample is 45 steel, and is quenched, and the hardness is 45HRC to 50HRC. The lower sample is 45 steel, and is quenched, the hardness is 45HRC to 50HRC, and the surface roughness Ra is 1.6nm. And (5) measuring the abrasion loss of the lower test piece after the two test pieces are ground for 1 h. When the load is 240N, the abrasion loss of the gear oil using a certain similar product is 0.42g; when the gear oil of example 2 was used, the amount of wear was only 0.20g, and the amount of wear was reduced by 52.3%.

2. The comparative experiment was still performed with the two oils described above. Experimental equipment: a spiral bevel gear of a vertical mill of a certain manufacturer; the mechanical efficiency was tested with a PC 20 1 mechanical efficiency meter. The gear oil of the use example 2 has 3.24 percent of mechanical efficiency improvement compared with the gear oil product of the same kind.

3. The two oils were still used for comparative experiments. Experimental equipment: SRV reciprocating friction and abrasion tester manufactured by Optimol, germany. An upper test piece is a chromium steel ball with the diameter of 7 mm; the lower test piece is SKH high-speed steel. The experimental time was 5000sec. When the load is 50N, the bite time of a gear oil product of the same type is 2138sec, while when the gear oil of the example 2 is used, the bite time is reduced to 280sec, and the depth of a grinding mark is reduced from 4.64 um to 3.87um.

The physical and chemical indexes of the oil product in the embodiment 2 of the application all reach Q/45022GLHC 001-2020 Standard for Gear oil enterprises for grinding equipment, and the typical physical and chemical indexes are as follows:

as shown in fig. 1, the present application provides a processing method of gear oil special for a vertical mill, where the gear oil special for a vertical mill is the above-mentioned gear oil special for a vertical mill, and the processing method includes the following steps: s10, adding 40-50% of composite base oil into a reaction kettle, stirring for 30min, and heating to 60-70 ℃. S20, preparing 10% of mother liquor from the antioxidant and the metal deactivator, adding the mother liquor into a reaction kettle, and stirring and blending for 30-60 min. S30, pouring the residual composite base oil into the reaction kettle, continuously stirring for 30min, and cooling the mixed oil in the reaction kettle to 50-60 ℃. S40, keeping the temperature at 50-60 ℃, sequentially adding the viscosity index improver, the antirust agent, the extreme pressure agent, the antiwear agent, the demulsifier and the oiliness agent into the reaction kettle, and circularly stirring for 3-4 hours. And S50, filtering under the pressure of 0.1-0.2 MPa to obtain the gear oil special for the vertical mill. The blending method is simple to operate, low in automation level and free from the influence of quality fluctuation of component oil at a distillation outlet of a device, and is adopted by most oil refineries at present. It should be noted that, before step S10, the entropy weight fuzzy comprehensive evaluation method is further adopted to perform formula optimization on the gear oil, so that the number of experiments can be greatly reduced, time is saved, and cost is reduced.

As shown in fig. 2, the present application further provides a device for processing the gear oil special for the vertical mill, wherein the gear oil special for the vertical mill is the above-mentioned gear oil special for the vertical mill, and the device includes: a reaction kettle 10, a filter 20, a pump 30 and a collecting container 40 which are connected in sequence.

The gear oil special for the large vertical mill has the remarkable advantages that:

has good extreme pressure abrasion resistance, oxidation and corrosion resistance, rust resistance, thermal oxidation stability and emulsification resistance;

the unique extreme pressure agent and the antiwear agent can reduce the scratching of the tooth surface, effectively reduce the running noise and ensure the smooth running of the gear under the working condition of heavy load or impact load;

the solubility of the additive in the group III base oil can be improved by adopting triphenyl phosphate;

proper adhesion and extremely low friction coefficient, can effectively reduce the body temperature generated when the speed reducer gear operates, and reduce energy consumption. The thermal stability is good, the oxidation resistance is outstanding, and the generation of various harmful oxides and oil sludge can be reduced;

under the condition that all properties are excellent and the normal operation of the large vertical mill is ensured, the service life of oil products can be greatly prolonged, the oil change frequency is reduced, the enterprise cost is saved, and the profit margin is improved.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The special gear oil for the vertical mill is characterized by comprising the following components in percentage by mass:

base oil: 84.72-89.25 percent of base oil, wherein the base oil is a compound of 55-60 percent of III base oil and 40-45 percent of triphenyl phosphate in mass ratio;

antioxidant: 2.0% -3.0%;

metal deactivators: 0.02 to 0.08 percent;

viscosity index improver: 1.0% -2.0%;

extreme pressure agent: 3.0% -4.0%;

an antiwear agent: 4.0% -5.0%;

antirust agent: 0.02 to 0.12 percent;

breaking the emulsifier: 0.05 to 0.08 percent;

friction modifiers: 0.66 to 1.0 percent.

2. The gear oil special for the vertical mill as claimed in claim 1, wherein the extreme pressure agent is sulfurized lard oil; the friction modifier is benzotriazole fatty amine salt.

3. The special gear oil for the vertical mill as claimed in claim 2, wherein the antioxidant is a compound of 60-70% of alkaline zinc dioctyl dithiophosphate and 30-40% of 2, 6-di-tert-butyl-p-cresol in mass ratio.

4. The gear oil special for a vertical mill according to claim 3, wherein the metal deactivator is a complex of N' -di-n-butylaminomethylenebenzotriazole and 60-70% alkyldiphenylamine in a mass ratio of 30-40%.

5. The gear oil special for a vertical mill according to claim 4, wherein the viscosity index improver is polyisobutylene with a molecular weight of 1300.

6. The gear oil special for the vertical mill as claimed in claim 5, wherein the antiwear agent is a composite of 50-60% by mass of sulfurized isobutylene and 40-50% by mass of di-n-butyl phosphite.

7. The gear oil special for the vertical mill as claimed in claim 6, wherein the rust inhibitor is a composite of any two or more of phosphate amine salt, alkenyl succinic acid, alkaline dinonyl naphthalene barium sulfonate and barium petroleum sulfonate.

8. The gear oil special for the vertical mill as claimed in claim 7, wherein the anti-emulsifier is a composite of 40% -50% by mass of propylene oxide, 20% -35% by mass of a condensate of an amine and an epoxy compound, and 25% -30% by mass of a polyether polymer compound.

9. A processing method of gear oil special for a vertical mill, which is characterized in that the gear oil special for the vertical mill is the gear oil special for the vertical mill in any one of claims 1 to 8, and the processing method comprises the following steps:

s40, keeping the temperature at 50-60 ℃, sequentially adding the viscosity index improver, the antirust agent, the extreme pressure agent, the antiwear agent, the demulsifier and the oiliness agent into the reaction kettle, and circularly stirring for 3-4 hours;

and S50, filtering under the pressure of 0.1MPa-0.2MPa to obtain the gear oil special for the vertical mill.

10. An apparatus for processing gear oil specially used for a vertical mill, wherein the gear oil specially used for the vertical mill is the gear oil specially used for the vertical mill of any one of claims 1 to 8, the apparatus comprising:

a reaction kettle (10), a filter (20), a pump (30) and a collection container (40) which are connected in sequence.