A blending device for engine oil production

Abstract

This application provides a blending device for engine oil production, belonging to the technical field of auxiliary equipment for engine oil production and processing. The blending device includes: a blending tank, support legs, a base oil inlet pipe, an additive inlet pipe, an outlet pipe, a stirring device, and a control unit. The blending tank is divided into a first chamber, a second chamber, and a third chamber from top to bottom by two partitions. The second chamber in the middle of the blending tank is cylindrical and used for blending engine oil. This application improves blending efficiency and effect and reduces power consumption by addressing the base oil filling method, the additive filling method, and the structure of the stirring device.

Description

Technical Field

[0001] This application relates to the technical field of auxiliary equipment for oil production and processing, and in particular to a blending device for oil production. Background Technology

[0002] Engine oil, also known as motor oil, plays a vital role in engine lubrication, friction reduction, cooling, leak prevention, rust and corrosion prevention, and shock absorption. Its quality directly affects the efficiency and lifespan of the equipment. Engine oil consists of two main components: base oil and additives. Base oil is the primary component, determining the oil's basic properties. Additives compensate for and improve the shortcomings of the base oil, imparting new properties and forming an important part of the engine oil composition.

[0003] Most existing industrial blended oil production processes utilize traditional equipment and are manually operated. While the quality of the products produced does meet market demands, as my country transitions from a manufacturing giant to a manufacturing powerhouse, industrial blended oils produced by traditional equipment can no longer meet the requirements of high-precision equipment. Furthermore, although some automated oil blending equipment exists, these systems generally suffer from low blending efficiency, poor mixing effects, and high energy consumption. These issues not only affect the quality of the blended oil but also fail to meet current policy requirements for building a resource-saving and environmentally friendly society. Summary of the Invention

[0004] The purpose of this application is to solve the aforementioned problems in the prior art. This application provides a blending apparatus for engine oil production. It improves the quality of engine oil blending, increases the efficiency of engine oil blending, and reduces the energy consumption of engine oil blending, thus comprehensively improving all aspects of engine oil blending performance.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A blending device for producing engine oil, characterized in that it comprises: a blending tank, support legs, a base oil inlet pipe, an additive inlet pipe, an outlet pipe, a stirring device, and a control unit; the bottom of the blending tank is fixed to the ground by several support legs, and the blending tank is divided into a first chamber, a second chamber, and a third chamber from top to bottom by two partitions; the second chamber in the middle of the blending tank is cylindrical and used for blending engine oil; the first chamber and the third chamber are respectively used to house the driving component and the supporting component of the stirring device; the base oil inlet pipe is connected to the top, middle, and bottom of the second chamber of the blending tank through a first inlet branch pipe, a second inlet branch pipe, and a third inlet branch pipe, respectively; the first inlet branch pipe, the second inlet branch pipe, and the third inlet branch pipe... The system is equipped with a first, second, and third electrically controlled valve. Flow meters are also installed on the first, second, and third inlet branch pipes to calculate the volume of base oil flowing into the blending tank by monitoring the flow rate of each inlet branch pipe. A discharge pipe is located at the bottom of the second chamber of the blending tank, and a fifth electrically controlled valve is installed on the discharge pipe. The blended oil flows out through the discharge pipe. A stirring device is installed in the second chamber of the blending tank. An additive inlet pipe is connected to the stirring device and injects additives into the blending tank through the stirring device. A fourth electrically controlled valve is installed on the additive inlet pipe. The first, second, third, and fourth electrically controlled valves are electrically connected to the control unit.

[0007] Preferably, the stirring device includes: a drive motor, a first gear, a second gear, a central shaft, and stirring blades; the output shaft of the drive motor drives the first gear to rotate, the first gear meshes with and drives the second gear to move, and the second gear is coaxially fixed on the outer surface of the central shaft to drive its rotation; the drive motor is located outside the top of the mixing tank 10, and its input shaft, the first gear, and the second gear are located inside the first cavity of the mixing tank; the central shaft is a hollow shaft, the top of which is connected to the additive feed pipe, the hollow cavity of the central shaft is used to receive the additive, and the lower part of the central shaft is rotatably fixed inside the third cavity of the mixing tank through a central shaft support, and the position where the central shaft passes through the two partitions must be sealed; the stirring blades are provided with blade holes communicating with the cavity of the central shaft, and the stirring blades are provided with several nozzles communicating with the blade holes, through which the additives are sprayed out and mixed with the base oil.

[0008] Preferably, a scraper is provided at the end of the stirring blade near the side wall of the second chamber of the mixing tank.

[0009] In some technical solutions, a heating plate is installed in the upper partition of the second cavity of the mixing tank, a heating plate is installed in the lower partition of the second cavity of the mixing tank, and three layers of heating plates (upper, middle, and lower) are installed in the side wall of the second cavity of the mixing tank. The multiple heating plates are electrically connected to the control unit.

[0010] Preferably, a liquid level sensor is also provided on the top of the mixing tank, and the liquid level sensor is electrically connected to the control unit.

[0011] Preferably, one end of the stirring blade is fixedly connected to the central shaft, and the other end of the stirring blade is hinged to a scraper; the cross-section of the stirring blade is hexagonal, and the stirring blade has two parallel planes on the upper and lower surfaces, and two planes on the left and right sides forming an acute angle.

[0012] Preferably, the included angle between the two planes facing the movement of the engine oil is in the range of 51°-55°, and the acute angles formed by the two planes on the left and right are equal.

[0013] Preferably, the scraper includes: scraper one and scraper two. One end of scraper one is hinged to the other end of the stirring blade, and the other end of scraper one is fixedly connected to one end of scraper two. The other end of scraper two has a wedge-shaped scraping blade. When the electric push rod installed in the stirring blade pushes the scraper up, the scraping blade of scraper two can clean the viscous oil adhering to the inner side wall of the mixing tank. The electric push rod is connected to scraper one through a universal joint.

[0014] Preferably, the stirring blade has a blade hole at its center that communicates with the cavity of the central shaft, and the blade hole is connected to several nozzles to provide additives. The nozzles have control switches and are electrically connected to the control unit. Blade heating plates are embedded in two planes that are parallel to each other on the upper and lower surfaces of the stirring blade.

[0015] Preferably, a plurality of protrusions are provided on two planes behind the stirring blade, and a protruding heating plate is provided inside the stirring blade near the protrusions.

[0016] This application has the following advantages:

[0017] (1) By injecting base oil and additives through the third, second, and first solenoid valves and nozzles of different heights, the mixing of base oil and additives can be completed at the fastest speed and the required quality can be basically achieved. After the injection process is completed, the required mixed oil can be obtained by stirring for a short time. The evenly distributed multiple nozzles can rotate to spray additives, which will help to add additives evenly. In the oil blending sampling and testing stage, the oil parameters can be finely adjusted by using the corresponding solenoid valves or nozzles according to the sampling results at different locations in the blending tank. Such targeted adjustments will greatly improve blending efficiency and reduce power consumption.

[0018] (2) A hexagonal stirring blade structure is proposed to achieve efficient stirring at a low speed. The design of the stirring blade shape realizes the convection and eddy diffusion of the fluid, thereby achieving the purpose of uniform mixing.

[0019] (3) A scraper controlled by an electric push rod is also provided at the end of the stirring blade, which can clean the viscous oil adhering to the inner wall of the mixing tank at any time.

[0020] (4) Several protrusions on the two planes behind the stirring blades will accelerate the flow of oil and improve the mixing efficiency and effect. Attached Figure Description

[0021] Figure 1 The diagram shown is a structural schematic of the blending apparatus for producing engine oil as described in this application;

[0022] Figure 2 The diagram shown is a structural schematic of the stirring blades of the blending device for producing engine oil described in this application under stirring conditions.

[0023] Figure 3 The diagram shown is a structural schematic of the stirring blades of the blending device for producing engine oil described in this application under scraping conditions.

[0024] Figure 4 The image shown is an AA cross-sectional view of the stirring blades of the blending device for producing engine oil described in this application;

[0025] Figure 5 The image shown is a cross-sectional view (AA) of another embodiment of the stirring blades of the blending apparatus for producing engine oil described in this application;

[0026] Reference numerals: 1 Base oil inlet pipe; 2 Support leg; 3 Drive motor; 4 Additive inlet pipe; 5 Discharge pipe; 6 First gear; 7 Second gear; 8 Central shaft; 9 Stirring blade; 10 Blending tank; 11 First inlet branch pipe; 12 Second inlet branch pipe; 13 Third inlet branch pipe; 14 Nozzle; 15 Scraper; 16 Heating plate; 17 Central shaft support; 18 Liquid level sensor; 21 First solenoid valve; 22 Second solenoid valve; 23 Third solenoid valve; 24 Fourth solenoid valve; 25 Fifth solenoid valve; 91 Blade heating plate; 92 Blade hole; 93 Protrusion; 94 Protruding heating plate; 151 Scraper one; 152 Scraper two; 153 Electric push rod. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present application are shown in the accompanying drawings, not all of them.

[0028] In existing technologies, oil blending is typically achieved using either mechanical stirring or pulse stirring. Mechanical stirring often employs a propeller-like component similar to that used in ships to create a vortex in the oil tank, accelerating the mixing process. Pulse stirring utilizes a specialized control system and a gas collecting plate installed in the reaction vessel or blending tank to generate a powerful airflow that agitates the oil from bottom to top and top to bottom. While this method offers shorter blending times, it is energy-intensive and costly. Due to the high energy consumption and cost of pulse stirring, this application's blending device still employs mechanical stirring. However, to address the technical problems of low blending efficiency, poor stirring effect, and high energy consumption associated with traditional propeller-type stirring, this application presents a highly automated oil blending device and its usage method, addressing issues related to base oil filling methods, additive filling methods, and the structure of the stirring device.

[0029] Example 1

[0030] like Figure 1 As shown, a blending device for producing engine oil includes: a blending tank 10, support legs 2, a base oil inlet pipe 1, an additive inlet pipe 4, an outlet pipe 5, a stirring device, and a control unit; the bottom of the blending tank 10 is fixed to the ground by several support legs 2, and the blending tank 10 is divided into a first chamber, a second chamber, and a third chamber from top to bottom by two partitions; the second chamber in the middle of the blending tank 10 is cylindrical and is used for blending engine oil, and the first chamber and the third chamber are respectively used to house the driving component and the supporting component of the stirring device. The base oil inlet pipe 1 is connected to the top, middle, and bottom of the second cavity of the blending tank 10 via the first inlet branch pipe 11, the second inlet branch pipe 12, and the third inlet branch pipe 13, respectively. The first inlet branch pipe 11, the second inlet branch pipe 12, and the third inlet branch pipe 13 are respectively equipped with a first solenoid valve 21, a second solenoid valve 22, and a third solenoid valve 23. Each of the first inlet branch pipes 11, the second inlet branch pipe 12, and the third inlet branch pipe 13 is also equipped with a flow meter (not shown in the figure). The volume of base oil flowing into the blending tank 10 through each inlet branch pipe is calculated by monitoring the flow rate of each inlet branch pipe. A discharge pipe 5 is located at the bottom of the second cavity of the blending tank 10, and a fifth solenoid valve 25 is installed on the discharge pipe 5. The blended oil flows out through the discharge pipe 5. A stirring device is installed in the second chamber of the mixing tank 10. The additive inlet pipe 4 is connected to the stirring device and injects additives into the mixing tank 10 through the stirring device. A fourth electrically controlled valve 24 is installed on the additive inlet pipe 4. The first electrically controlled valve 21, the second electrically controlled valve 22, the third electrically controlled valve 23, and the fourth electrically controlled valve 24 are electrically connected to the control unit.

[0031] Preferably, the first feed branch pipe 11 is connected to the top of the second cavity of the mixing tank 10, and the second feed branch pipe 12 and the third feed branch pipe 13 are located at two height points that can divide the height of the second cavity into three equal parts.

[0032] The mixing device includes: a drive motor 3, a first gear 6, a second gear 7, a central shaft 8, and stirring blades 9. The output shaft of the drive motor 3 drives the first gear 6 to rotate, and the first gear 6 meshes with and drives the second gear 7 to move. The second gear 7 is coaxially fixed on the outer surface of the central shaft 8, thereby driving its rotation. The drive motor 3 is located outside the top of the mixing tank 10, while its input shaft, the first gear 6, and the second gear 7 are located inside the first cavity of the mixing tank 10. The central shaft 8 is a hollow shaft, and its top end is connected to the additive inlet pipe 4. The hollow cavity of the central shaft 8 is used to receive the additive. The lower part of the central shaft is rotatably fixed inside the third cavity of the mixing tank 10 through a central shaft support 17. The position where the central shaft 8 passes through the two partitions must be sealed. The stirring blades 9 are provided with blade holes that communicate with the cavity of the central shaft 8. Several nozzles 14 are provided on the stirring blades that communicate with the blade holes. The additive is sprayed out through the nozzles 14 and mixed with the base oil. The control switches of the drive motor 3 and the nozzles 14 are electrically connected to the control unit. A scraper 15 is provided at the end of the stirring blade 9 near the side wall of the second chamber of the mixing tank 10. The scraper 15 can be used to scrape off the viscous machine oil adhering to the side wall of the mixing tank 10.

[0033] Preferably, a heating plate 16 is provided in the upper partition of the second cavity of the mixing tank 10, a heating plate 16 is provided in the lower partition of the second cavity of the mixing tank 10, and three layers of heating plates 16 (upper, middle, and lower) are provided in the side wall of the second cavity of the mixing tank 10. The arrangement of multiple heating plates 16 can enable the mixing tank 10 to reach the required temperature more quickly and ensure uniform temperature maintenance. The multiple heating plates 16 are electrically connected to the control unit.

[0034] Preferably, a liquid level sensor is also provided on the top of the mixing tank 10, and the liquid level sensor is electrically connected to the control unit.

[0035] The operating method of the blending equipment for engine oil production includes:

[0036] (1) Open the fourth electric control valve 24 and inject the additive into the central shaft 8; then start the drive motor 3 to drive the stirring blade 9 to rotate.

[0037] (2) Open the third electric control valve 23 and inject base oil into the blending tank 10; at the same time, the nozzle 14 on the stirring blade 9 located at the bottom of the blending tank 10 sprays additives into the base oil; the control unit will control the ratio of base oil to additives by controlling the opening and closing of the third electric control valve 23 and the nozzle 14, and the stirring device will rotate and stir.

[0038] (3) When the injection volume of the third feed branch pipe 13 reaches the preset value (one-third of the height of the blending tank 10), the control unit closes the third electric control valve 23 and the nozzle on the stirring blade located at the bottom of the blending tank 10; at the same time, the second electric control valve 22 and the nozzle on the stirring blade located in the middle of the blending tank 10 are opened to continue injecting base oil and additives into the blending tank 10; the control unit controls the ratio of base oil to additives by controlling the opening and closing of the second electric control valve 22 and the nozzle, and the stirring device rotates and stirs.

[0039] (4) When the injection volume of the second feed branch pipe 12 reaches the preset value (two-thirds of the height of the blending tank 10), the control unit closes the third electric control valve 22 and the nozzle on the stirring blade located in the middle of the blending tank 10; at the same time, the first electric control valve 21 and the nozzle on the stirring blade located in the upper part of the blending tank 10 are opened to continue injecting base oil and additives into the blending tank 10; the control unit controls the ratio of base oil to additives by controlling the opening and closing of the first electric control valve 21 and the nozzle, and the stirring device rotates and stirs.

[0040] (5) When the injection volume of the first feed branch pipe 11 reaches the preset value, the control unit closes the first electric control valve 21 and the nozzle on the stirring blade located at the top of the mixing tank 10; the stirring device continues to work for a predetermined time and then stops working; the oil in the mixing tank 10 is sampled at multiple points at the upper, middle and lower positions to obtain the sampling results; based on the sampling results, the control unit can control the opening and closing of the first electric control valve 21, the second electric control valve 22, the third electric control valve 23 and each nozzle to fine-tune the oil parameters of the upper, middle and lower layers respectively until the oil is qualified;

[0041] (6) The control unit opens the fifth solenoid valve 25.

[0042] The advantages of injecting base oil and additives through the third solenoid valve 23, the second solenoid valve 22, the first solenoid valve 21, and nozzles at different heights are: It allows for the fastest possible mixing of base oil and additives while achieving the required quality. After the injection process, a short stirring time is sufficient to produce the desired mixed oil. Compared to adding base oil first, then additives, and finally stirring, this method increases efficiency by over 50%, significantly improves oil quality, saves production time, and conserves energy. The evenly distributed, rotatable nozzles spray additives, promoting uniform addition, which is more efficient and effective than the single additive filling port method in existing technologies. Finally, in the oil blending sampling and testing stage, if an abnormality is detected at a certain location, the oil parameters can be fine-tuned using the corresponding solenoid valve or nozzle based on the sampling results at that location in the blending tank. Stirring followed by another sampling measurement allows for targeted adjustments that greatly improve blending efficiency and reduce power consumption.

[0043] Example 2

[0044] like Figure 2 and 3 The diagrams show the structural schematics of the stirring blades in the stirring state and the scraping state of the blending device for oil production. The technical solution of Embodiment 2 is basically the same as that of Embodiment 1, except for the specific structure of the stirring blades. Traditional propeller-type stirring methods are not very efficient in oil blending, and the temperature rise during stirring can easily cause oil oxidation. Therefore, this application proposes a stirring blade structure that can achieve efficient stirring at lower speeds. The design of the stirring blades enables fluid convection and vortex diffusion and tumbling, thereby achieving uniform mixing. Figure 2 and Figure 3 The arrows in the diagram indicate the rotation direction of the central shaft 8. One end of the stirring blade 9 is fixedly connected to the central shaft 8 (by welding or other mechanical connection), and the other end of the stirring blade 9 is hinged to a scraper 15. The stirring blade 9 has a hexagonal cross-section, with two parallel planes on the upper and lower sides, and two planes on the left and right sides forming an acute angle. Several nozzles are evenly arranged on the two planes facing the movement of the oil. When the stirring blade 9 rotates, these two planes forming an acute angle push the oil to the upper and lower sides respectively. The oil flowing around the surface of the stirring blade to the back of the stirring blade will generate vortex diffusion on the two planes behind the stirring blade. Through simulation, it can be seen that for oil with high viscosity, the rotation speed of the hexagonal stirring blade 9 does not need to be very high to achieve a good oil mixing effect. It can also effectively avoid the technical problems of inefficiency, oxidation, and high energy consumption caused by traditional propeller-type stirring methods. It can also achieve heating and scraping functions while stirring.

[0045] Preferably, the oil blending effect is best when the included angle between the two planes facing the oil movement is in the range of 51°-55°. Preferably, the acute angles formed by the two planes on the left and right sides are equal. Preferably, there are three nozzles 14 on each plane, and the nozzles 14 are embedded in the plane.

[0046] Preferably, such as Figure 1 As shown in Embodiment 1, six stirring blades 9 are arranged alternately on both sides of the central shaft 8. From top to bottom, two stirring blades 9 form a group, and the nozzles 14 on them correspond to the first feed branch pipe 11, the second feed branch pipe 12, and the third feed branch pipe 13, respectively, and are controlled by the control unit.

[0047] The other end of the stirring blade 9 is hinged to a scraper 15. The scraper 15 includes a first scraper 151 and a second scraper 152. One end of the first scraper 151 is hinged to the other end of the stirring blade 9, and the other end of the first scraper 151 is fixedly connected to one end of the second scraper 152. The other end of the second scraper 152 has a wedge-shaped scraping edge. When the electric push rod 153 installed in the stirring blade 9 pushes the scraper 15 up, the scraping edge of the second scraper 152 can clean the viscous oil adhering to the inner wall of the mixing tank 10. The electric push rod 153 is connected to the first scraper 151 through a universal joint.

[0048] Figure 4 This is a cross-sectional view (AA) of the stirring blade 9 of the blending device for oil production. The stirring blade 9 has a blade hole 92 at its center, communicating with the cavity of the central shaft 8. The blade hole 92 is also connected to several nozzles 14 to provide additives. Each nozzle 14 has a control switch electrically connected to the control unit (not shown in the figure). Two electric push rods 153 are located to the left of the blade hole 92. Blade heating plates 91 are embedded in two parallel planes above and below the stirring blade 9. This arrangement enables three-dimensional heating of the blending device, allowing it to reach the required blending temperature more quickly and accurately. Furthermore, during this heating process, the oil temperature flowing above and below the stirring blade 9 will be higher than the oil temperature behind the stirring blade. This temperature difference enhances the vortex effect, accelerates oil flow, and improves mixing efficiency and effectiveness.

[0049] Example 3

[0050] Figure 5 A cross-sectional view (AA) of another embodiment of the stirring blades in a blending apparatus for oil production. It is consistent with... Figure 4 The difference lies in the fact that several protrusions 93 are provided on the two flat surfaces behind the stirring blade 9. The protrusions 93 can create more vortices behind the stirring blade 9, accelerating the flow of engine oil and improving the mixing efficiency and effect. However, at the same time, the grooves between the protrusions 93 and the flat surfaces are prone to oil accumulation and adhesion. Therefore, in order to facilitate cleaning, a raised heating plate 94 is provided inside the stirring blade 9 near the protrusions 93. Normally, the raised heating plate 94 does not work. Only when the grooves of the protrusions 93 need to be cleaned, the control unit controls the raised heating plate 94 to work. The high temperature will make the adhered engine oil easier to clean.

[0051] This application addresses the issues of base oil filling method, additive filling method, and the structure of the stirring device to obtain a highly automated blending device for engine oil production, solving the technical problems of low blending efficiency, poor stirring effect, and high energy consumption of traditional equipment.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still improve the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A blending device for machine oil production, characterized by, The application relates to a blending tank, supporting legs, a base oil feeding pipe, an additive feeding pipe, a discharging pipe, a stirring device and a control unit. The bottom of the blending tank is fixed on the ground through supporting legs, and the blending tank is divided into a first cavity, a second cavity and a third cavity from top to bottom through two partitions; the second cavity in the middle of the blending tank is cylindrical and used for blending machine oil, and the first cavity and the third cavity are respectively used for arranging driving components and supporting components of the stirring device; the base oil feeding pipe is communicated with the top, middle and bottom of the second cavity of the blending tank through a first feeding branch pipe, a second feeding branch pipe and a third feeding branch pipe, and first, second and third electric control valves are respectively arranged on the first, second and third feeding branch pipes; flow meters are further arranged on the first, second and third feeding branch pipes, the flow of each feeding branch pipe is monitored to calculate the volume of the base oil flowing into the blending tank; a discharging pipe is arranged at the bottom of the second cavity of the blending tank, a fifth electric control valve is arranged on the discharging pipe, and the blended machine oil flows out through the discharging pipe; the stirring device is arranged in the second cavity of the blending tank, the additive feeding pipe is communicated with the stirring device and injects additives into the blending tank through the stirring device, and a fourth electric control valve is arranged on the additive feeding pipe; the first, second, third, fourth and fifth electric control valves are electrically connected with the control unit; The stirring device comprises a driving motor, a first gear, a second gear, a central shaft and stirring blades; the output shaft of the driving motor drives the first gear to rotate, the first gear meshes to drive the second gear to move, and the second gear is coaxially fixed on the outer surface of the central shaft to drive the central shaft to rotate; the driving motor is arranged at the top of the blending tank and located outside the blending tank, and the input shaft, the first gear and the second gear are located inside the first cavity of the blending tank; the central shaft is a hollow shaft body, the top end of the central shaft is connected with the additive feeding pipe, the hollow cavity of the central shaft is used for receiving additives, the lower part of the central shaft is rotatably fixed in the third cavity of the blending tank through a central shaft support, and the central shaft needs to be sealed at the positions passing through the two partitions; the stirring blades are provided with blade holes communicated with the cavity of the central shaft, a plurality of nozzles communicated with the blade holes are arranged on the stirring blades, and the additives are sprayed out through the nozzles to mix with the base oil; The end of the stirring blades close to the side wall of the second cavity of the blending tank is provided with a scraper; The scraper comprises a scraper one and a scraper two, one end of the scraper one is hingedly connected with the other end of the stirring blades, the other end of the scraper one is fixedly connected with one end of the scraper two, and the other end of the scraper two is provided with a wedge-shaped scraping edge; when an electric push rod installed in the stirring blades pushes up the scraper, the scraping edge of the scraper two can clean viscous machine oil adhered to the inner side wall of the blending tank, and the electric push rod is connected with the scraper one through a universal joint; One end of the stirring blades is fixedly connected with the central shaft, and the other end of the stirring blades is hingedly connected with a scraper; the cross section of the stirring blades is hexagonal, and the stirring blades are provided with two parallel planes on the upper and lower parts and two planes on the left and right parts to form acute angle included angles; the included angles of the two planes facing the movement of the machine oil are in the range of 51-55 degrees, and the acute angle included angles formed by the two planes on the left and right parts are equal. ​ The center of the stirring blade is provided with a blade hole in communication with the cavity of the center shaft, the blade hole is in communication with a plurality of nozzles to provide additives, the nozzles are electrically connected with the control unit through control switches; the stirring blade is provided with blade heating plates embedded in two parallel planes thereof; A plurality of protrusions are arranged on the two planes at the rear of the stirring blade, and protrusion heating plates are arranged at positions close to the protrusions in the stirring blade; The method for using the blending device for machine oil production comprises the following steps: (1) open the fourth electric control valve to inject additives into the center shaft, and then start the driving motor to drive the stirring blade to rotate; (2) open the third electric control valve to inject base oil into the blending tank, and at the same time, the nozzles on the stirring blade at the lower part of the blending tank inject additives into the base oil; the control unit controls the proportion of the base oil and the additives by controlling the third electric control valve and the switches of the nozzles, and the stirring device rotates and stirs; (3) when the injection amount of the third feeding branch reaches the preset value, that is, one third of the height of the blending tank, the control unit closes the third electric control valve and the nozzles on the stirring blade at the lower part of the blending tank, and at the same time, opens the second electric control valve and the nozzles on the stirring blade at the middle part of the blending tank to continue injecting the base oil and the additives into the blending tank; the control unit controls the proportion of the base oil and the additives by controlling the second electric control valve and the switches of the nozzles, and the stirring device rotates and stirs; (4) when the injection amount of the second feeding branch reaches the preset value, that is, two thirds of the height of the blending tank, the control unit closes the second electric control valve and the nozzles on the stirring blade at the middle part of the blending tank, and at the same time, opens the first electric control valve and the nozzles on the stirring blade at the upper part of the blending tank to continue injecting the base oil and the additives into the blending tank; the control unit controls the proportion of the base oil and the additives by controlling the first electric control valve and the switches of the nozzles, and the stirring device rotates and stirs; (5) when the injection amount of the first feeding branch reaches the preset value, the control unit closes the first electric control valve and the nozzles on the stirring blade at the upper part of the blending tank; the stirring device continues to work for a predetermined time and then stops working; the machine oil in the blending tank is sampled at multiple points at the upper, middle and lower positions to obtain sampling results; the first electric control valve, the second electric control valve, the third electric control valve and the nozzles can be controlled by the control unit to finely adjust the parameters of the upper, middle and lower layers of the oil product according to the sampling results until the oil product is qualified; (6) the control unit opens the fifth electric control valve.

2. The blending device for oil production according to claim 1, wherein The upper baffle of the second cavity of the blending tank is provided with a heating plate, the lower baffle of the second cavity of the blending tank is provided with a heating plate, and the side wall of the second cavity of the blending tank is provided with three layers of heating plates, and the heating plates are electrically connected with the control unit.

3. The blending apparatus for oil production according to claim 1, wherein The top of the blending tank is further provided with a liquid level sensor, and the liquid level sensor is electrically connected with the control unit.

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