Automatic lubricating oil blending and stirring system

Abstract

The invention provides an automatic lubricating oil blending and stirring system, and belongs to the technical field of lubricating oil blending systems. Comprising a base oil tank, an additive tank, a blending tank and a finished product tank, an outlet of the blending tank is connected with the finished product tank through a discharging pipe, the blending tank is communicated with a conduction oil heating self-control valve through a feeding pipe, one end of the base oil tank is connected with a self-control raw material pump through a through pipe, and one end of the additive tank is connected with a self-control adding pump through a through pipe. The self-control adding machine pump and the self-control raw material machine pump are both communicated with the heat conduction oil heating self-control valve through through pipes, the blending tank and the base oil tank are both provided with intelligent thermometers and weighing sensors, and the additive tank is provided with a weighing sensor. The lubricating and blending processing quality is effectively improved.

Description

Technical Field

[0001] This invention belongs to the technical field of lubricating oil blending systems, and relates to an automated lubricating oil blending and stirring system. Background Technology

[0002] In the development of modern industry, lubricating oil plays a crucial role in the mechanical field, performing functions such as lubrication, cooling, cleaning, and rust prevention.

[0003] Patent document CN208888243U discloses a lubricating oil production system, belonging to the field of lubricating oil production technology. It includes a crude oil tank, an additive tank, a blending tank, a finished product tank, and a filling system. The crude oil tank and the additive tank are connected to the inlet of the blending tank via a first and a second oil extraction pipeline, respectively. The outlet of the blending tank is connected to the inlet of the finished product tank via a third oil extraction pipeline. The outlet of the finished product tank is connected to the filling system via a fourth oil extraction pipeline. A four-way valve is also connected between the outlet of the finished product tank and the fourth oil extraction pipeline. The four-way valve is also connected to a fifth oil extraction pipeline and a sampling pipeline. The outlet of the fifth oil extraction pipeline is connected to the inlet of the blending tank. The sampling pipeline is connected to a sampler. The outside of the blending tank is covered with a spiral electric heating wire connected to a power source. A temperature sensor is installed inside the blending tank, and an audible and visual alarm is installed outside the blending tank. The temperature sensor and the audible and visual alarm are electrically connected to a controller.

[0004] However, the aforementioned existing technologies still have the following problems:

[0005] The aforementioned prior art is equipped with a temperature sensor and an audible and visual alarm, which can detect the temperature inside the modulation tank. When the temperature inside the modulation tank exceeds the temperature set by the temperature sensor, the signal is transmitted to the controller, which then controls the audible and visual alarm to sound. Furthermore, all the lubricating oil and additives are delivered into the modulation tank and then heated by connecting the power supply through an electric heating wire.

[0006] Heating inside the tank can easily cause the oil near the heat source to overheat. Furthermore, the alarm systems in the existing technology only serve as warnings and cannot automatically handle overheated lubricating oil in a timely manner. Manual intervention is required, resulting in a delayed response and continuous deterioration of the overheated oil. The system cannot adapt to the heating requirements of different formulations / batches, causing the oil to undergo multiple thermal shock cycles during each batch heating stage, affecting the quality of the lubricating oil. In addition, the lack of an active cooling system means that heating is simply turned off after overheating, relying on natural heat dissipation from the tank wall, which has a low cooling rate and further affects the production quality of the lubricating oil. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide an automated lubricating oil blending and stirring system to solve the problems mentioned in the background. The present invention achieves precise temperature control through a dynamic model by setting up a heat transfer oil heating self-controlled valve, a self-controlled raw material pump, a self-controlled addition pump, an intelligent temperature instrument, and a weighing sensor, thereby ensuring the processing quality of the lubricating oil.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0009] An automated lubricating oil blending and stirring system includes a base oil tank, an additive tank, a blending tank, and a finished product tank. The outlet of the blending tank is connected to the finished product tank via a discharge pipe. The blending tank is connected to a heat transfer oil heating automatic control valve via a feed pipe. One end of the base oil tank is connected to an automatic raw material pump via a connecting pipe. One end of the additive tank is connected to an automatic additive pump via a connecting pipe. Both the automatic additive pump and the automatic raw material pump are connected to the heat transfer oil heating automatic control valve via connecting pipes. The blending tank and the base oil tank are equipped with intelligent temperature instruments and weighing sensors, and the additive tank is equipped with a weighing sensor.

[0010] Furthermore, an automatic discharge valve is installed on the discharge pipe connecting the blending tank and the finished product tank, and four rectangular support legs are fixed at the bottom of the blending tank, with the discharge pipe located between the four support legs.

[0011] Furthermore, it also includes a control center computer, a controller, a first remote station module, and a second remote station module. The control center computer is connected to the controller via a signal line, and the controller is connected to the first remote station module and the second remote station module via signal lines respectively.

[0012] The first remote station module is used to connect to and collect signals from the temperature sensor and the weighing sensor.

[0013] The second remote station module is used to connect to and control the automatic control raw material pump, the automatic control additive pump, the heat transfer oil heating automatic control valve, and the automatic control discharge valve.

[0014] Furthermore, the mixing tank is connected to a cooling device, which includes a plate heat exchanger and a cooling tank. An inclined spray pipe is fixed to the inner wall of the mixing tank, with one end of the spray pipe penetrating the side wall of the mixing tank. The plate heat exchanger is connected to the outer end of the spray pipe of the mixing tank via a discharge pipe. A pump is installed on the discharge pipe. One end of the cooling tank is connected to a first oil pipe, and the other end is connected to a second oil pipe. The second oil pipe is connected to the plate heat exchanger. The first oil pipe is connected to the mixing tank and is located above the second oil pipe. A stirring motor is fixed to the top of the cooling tank. The output shaft of the stirring motor is connected to a drive shaft. One end of the drive shaft extends into the cooling tank, and several stirring rods are fixed to the outer wall of the drive shaft.

[0015] Furthermore, the bottom wall of the mixing tank is conical.

[0016] Furthermore, the nozzle of the injection pipe is rectangular.

[0017] Furthermore, the basic oil tank is equipped with an intelligent level gauge.

[0018] Furthermore, a pulse air pump is fixed at one end of the mixing tank, and an air guide pipe is provided on the outer surface of one end of the pulse air pump. The air guide pipe passes through the side wall of the mixing tank and is provided with several pulse nozzles on the outer wall of one end inside the mixing tank.

[0019] Furthermore, the intelligent temperature instrument, weighing sensor, and intelligent level gauge are all equipped with a first wireless Bluetooth module. The first remote station module is wirelessly connected to several first wireless Bluetooth modules. The pump, stirring motor, heat transfer oil heating self-controlled valve, self-controlled discharge valve, self-controlled additive pump, and self-controlled raw material pump are all equipped with a second wireless Bluetooth module. The second remote station module is wirelessly connected to several second wireless Bluetooth modules. The pulse air pump is equipped with a third wireless Bluetooth module, and the controller is wirelessly connected to the third wireless Bluetooth module.

[0020] The beneficial effects of this invention are:

[0021] Compared with existing technologies, the technical solution of this invention solves three major industry pain points in the lubricating oil blending process—temperature runaway, excessive energy consumption, and quality fluctuation—through a three-pronged innovation of external heating, enhanced cooling, and intelligent IoT, achieving a leapfrog upgrade from "intermittent production" to "continuous intelligent manufacturing." It is particularly suitable for the large-scale stable production of high-value-added lubricating oils.

[0022] 1. Adaptive temperature rise:

[0023] Before entering the blending tank, the base oil and additives are precisely heated in the delivery pipeline by a heat transfer oil heating self-controlled valve, which completely eliminates the local high temperature zone caused by electric heating in the tank and avoids the thermal decomposition of additives.

[0024] Dynamic temperature control for energy saving:

[0025] By combining data from intelligent temperature instruments and weighing sensors, the opening of the heat transfer oil valve is adjusted in real time to match the oil temperature and flow rate, thereby improving thermal efficiency.

[0026] Compared to existing heating methods, this invention moves the heating process of lubricating oil base oil and additives from the mixing tank to the delivery pipeline, where they are heated in real time by a heat transfer oil heating self-controlled valve. This effectively prevents local overheating, protects the activity of additives, and allows the lubricating oil to exchange heat at high speed. There are no high-temperature stagnation points throughout the process, and the additives will not decompose or become ineffective due to local high temperatures.

[0027] Eliminating thermal stress in the mixing tank extends equipment life; pipeline heating transfers the heat load to an external heat exchanger, and the mixing tank serves only as a mixing container, reducing the risk of thermal stress damage.

[0028] It enables continuous production, improves efficiency, and allows raw material feeding, heating, and blending to be carried out simultaneously;

[0029] Temperature-viscosity relationship optimization: Lubricating oil viscosity is extremely sensitive to temperature. Pipeline heating ensures that every drop of oil is mixed at the same temperature / shear rate, avoiding viscosity stratification caused by in-tank heating.

[0030] 2. Proactive intervention:

[0031] Real-time monitoring of temperature and flow rate, dynamic model calculation of optimal control parameters, and automatic adjustment of valve opening / pump speed to replace manual operation and improve response time.

[0032] Overheat prevention:

[0033] The model predicts temperature trends based on real-time data and reduces power in advance before approaching the threshold, such as by reducing valve opening and closing the heat transfer oil heating self-control valve to avoid the probability of overheating. Through coordinated regulation of flow rate and heat medium, such as increasing flow rate to disperse heat during the heating stage, the model ensures that the oil temperature rises smoothly according to the preset linear / exponential curve, avoiding temperature fluctuations.

[0034] 3. The inclined spray pipe with a rectangular nozzle causes the cooling oil to impact the tank wall tangentially, forming a forced swirling flow, breaking up temperature stratification, and reducing the temperature difference of the lubricating oil in the mixing tank.

[0035] By setting up a cooling device, the lubricating oil can be cooled down in a timely manner when overheating occurs, which effectively solves the technical problem of low efficiency caused by the existing technology that only turns off the heating function and allows the lubricating oil to cool down naturally. Attached Figure Description

[0036] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0037] Figure 1 This is a schematic diagram of an automated lubricating oil blending and stirring system according to an embodiment of the present invention;

[0038] Figure 2 This is an assembly cross-sectional view of the blending tank and cooling device of the automated lubricating oil blending and stirring system according to an embodiment of the present invention;

[0039] Figure 3 This is a cross-sectional view of the cooling tank of the automated lubricating oil blending and stirring system according to an embodiment of the present invention;

[0040] Figure 4 This is a logic diagram of the automated lubricating oil blending and stirring system according to an embodiment of the present invention;

[0041] Figure 5 This is a front view of the injection pipe of the automated lubricating oil blending and stirring system according to an embodiment of the present invention.

[0042] In the diagram: 1. Base oil tank; 2. Additive tank; 3. Blending tank; 4. Finished product tank; 5. Discharge pipe; 6. Heat transfer oil heating automatic control valve; 7. Feed pipe; 8. Automatic raw material pump; 9. Automatic additive pump; 10. Intelligent temperature instrument; 11. Weighing sensor; 12. Automatic discharge valve; 13. Support leg; 14. Control center computer; 15. Controller; 16. First remote station module; 17. Second remote station module; 18. Plate heat exchanger; 19. Cooling tank; 20. Injection pipe; 21. Pump; 22. Discharge pipe; 23. First oil pipe; 24. Second oil pipe; 25. Stirring motor; 26. Stirring rod; 27. Drive shaft; 28. Intelligent level gauge; 29. ​​Pulse air pump; 30. Air guide pipe; 31. Pulse nozzle. Detailed Implementation

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0044] like Figure 1-4As shown, an automated lubricating oil blending and stirring system includes a base oil tank 1, an additive tank 2, a blending tank 3, and a finished product tank 4. The outlet of the blending tank 3 is connected to the finished product tank 4 via a discharge pipe 5. The blending tank 3 is connected to a heat transfer oil heating automatic control valve 6 via a feed pipe 7. The heat transfer oil heating automatic control valve 6 is a special high-temperature and high-pressure valve for heat transfer oil heating systems. One end of the base oil tank 1 is connected to an automatic raw material pump 8 via a connecting pipe. One end of the additive tank 2 is connected to an automatic additive pump 9 via a connecting pipe. Both the automatic additive pump 9 and the automatic raw material pump 8 are connected to the heat transfer oil heating automatic control valve 6 via connecting pipes. Both the blending tank 3 and the base oil tank 1 are equipped with intelligent temperature instruments 10 and weighing sensors 11. A weighing sensor 11 is installed on the additive tank 2, and an intelligent level gauge 28 is installed on the base oil tank 1. The intelligent level gauge 28 is used to monitor the real-time liquid level in the mixing tank 3 and prevent overflow during feeding. An automatic discharge valve 12 is installed on the discharge pipe 5 that connects the mixing tank 3 to the finished product tank 4. Four rectangular support legs 13 are fixed at the bottom of the mixing tank 3. The discharge pipe 5 is located between the four support legs 13. The system also includes a control center computer 14, a controller 15, a first remote station module 16, and a second remote station module 17. The control center computer 14 is connected to the controller 15 via a signal line. The controller 15 is connected to the first remote station module 16 and the second remote station module 17 via signal lines.

[0045] The first remote station module 16 is used to connect to and collect signals from the temperature sensor and the weighing sensor 11.

[0046] The second remote station module 17 is used to connect to and control the automatic control raw material pump, the automatic control additive pump, the heat transfer oil heating automatic control valve, and the automatic control discharge valve.

[0047] Multiple weighing sensors 11 are used to monitor the weight of the mixing tank, base oil tank 1, and additive tank 2 in real time. Multiple intelligent thermometers 10 are used to monitor the temperature of the lubricating oil in the blending tank 3 and base oil tank 1 in real time, and finally transmit the signal back to the first remote station module 16. The first remote station module 16 transmits the information to the controller 15. After processing the information, the controller 15 transmits the information to the central computer. The operator inputs appropriate instructions to the central computer, and the central computer sends information to the controller 15. The controller 15 processes and calculates the information and sends it to the second remote station module 17. The second remote station module 17 controls the automatic raw material pump 8, the automatic additive pump 9, the heat transfer oil heating automatic valve 6, and the automatic discharge valve 12 to start, so as to realize the weighing and metering formula control of batching and conveying, as well as temperature control. Before the temperature exceeds the required temperature, the heat transfer oil heating automatic valve 6 is automatically shut off to stop heating.

[0048] like Figure 2-3As shown in Figure 5, the mixing tank 3 is connected to a cooling device, which includes a plate heat exchanger 18 and a cooling tank 19. The plate heat exchanger 18 is a high-efficiency heat exchanger composed of a series of metal plates with a certain corrugated shape stacked together. Thin rectangular channels are formed between the various plates, and heat exchange occurs through the plates. It has the characteristics of high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, wide application, and long service life. An inclined spray pipe 20 is fixed on the inner wall of the mixing tank 3. One end of the spray pipe 20 penetrates the side wall of the mixing tank 3. The plate heat exchanger 18 is connected to the outer end of the spray pipe 20 of the mixing tank 3 through the discharge pipe 22. The inclination angle of the spray pipe 20 is 35 degrees. The inclined spray pipe 20 can maximize the conversion of the kinetic energy of the feed flow into the tangential momentum that drives the fluid in the mixing tank 3 to rotate. The pipe opening is arranged close to the tank wall.

[0049] A pump 21 is installed on the discharge pipe 22. The power of the pump 21 can be controlled, thereby controlling the flow rate of the lubricating oil output from the injection pipe 20. One end of the cooling tank 19 is connected to a first oil pipe 23, and the other end is connected to a second oil pipe 24. The second oil pipe 24 is connected to a plate heat exchanger 18. The first oil pipe 23 is connected to a mixing tank 3. The first oil pipe 23 is located above the second oil pipe 24. A stirring motor 25 is fixed on the top of the cooling tank 19. The output shaft of the stirring motor 25 is connected to a drive shaft 27. One end of the drive shaft 27 extends into the cooling tank 19. Several stirring rods 26 are fixed on the outer wall of the drive shaft 27.

[0050] Pump 21 is started, drawing high-temperature oil from the bottom of mixing tank 3 and into cooling tank 19 through first oil pipe 23. Stirring motor 25 is started, driving transmission shaft 27 to rotate several stirring rods 26 and stirring the high-temperature oil in cooling tank 19, making the overall temperature of the lubricating oil in the stirring tank more uniform, which is conducive to subsequent heat exchange and cooling treatment. The high-temperature oil enters plate heat exchanger 18 through second oil pipe 24 for cooling treatment, and finally is transported to spray pipe 20 through discharge pipe 22. The lubricating oil after heat exchange and cooling treatment impacts the tank wall at a certain speed. The lubricating oil diffuses tangentially along the inner wall of mixing tank 3, forming a forced vortex, which makes the oil in mixing tank 3 rotate as a whole.

[0051] When lubricating oil is ejected from the inclined nozzle at a certain speed, it possesses momentum. This speed has a component in the tangential direction of the inner wall of the mixing tank 3. The lubricating oil jet carries this tangential momentum into the fluid inside the mixing tank 3. This high-speed jet collides and rubs against the relatively stationary or slow-moving lubricating oil around it, transferring its tangential momentum to the surrounding fluid. The fluid inside the tank is continuous. Once the fluid near the tank wall is driven to begin rotating, it transmits this rotational motion layer by layer inward (towards the center of the tank) through viscous forces. At the same time, the tank wall itself also restricts the radial movement of the fluid, forcing it to move mainly in the tangential (circumferential) direction.

[0052] The inner bottom wall of the mixing tank 3 is conical. The conical bottom naturally guides the rotating fluid downwards and towards the center, forming an upward backflow in the central region, similar to a "tornado" structure, which greatly enhances the overall circulation and mixing effect. The nozzle of the jet pipe 20 is rectangular. The rectangular nozzle can generate a sheet-like jet, with a larger contact area with the tank wall, which may be more conducive to transferring tangential momentum to the fluid.

[0053] like Figure 1-4 As shown, a pulse air pump 29 is fixed to one end of the mixing tank 3. An air guide pipe 30 is provided on the outer surface of one end of the pulse air pump 29. The air guide pipe 30 passes through the side wall of the mixing tank 3 and is provided with several pulse nozzles 31 on the outer wall of one end of the mixing tank 3. The intelligent temperature instrument 10, the weighing sensor 11, and the intelligent liquid level instrument 28 are all equipped with a first wireless Bluetooth module. The first remote station module 16 is wirelessly connected to several first wireless Bluetooth modules. The pump 21, the stirring motor 25, the heat transfer oil heating self-control valve 6, and the self-control discharge valve 12 are also included. The self-controlled additive pump 9 and the self-controlled raw material pump 8 are both equipped with a second wireless Bluetooth module. The second remote station module 17 is wirelessly connected to several second wireless Bluetooth modules. The second remote station module 17 can control the working status of the pump 21, the stirring motor 25, the heat transfer oil heating self-controlled valve 6, the self-controlled discharge valve 12, the self-controlled additive pump 9, and the self-controlled raw material pump 8. The pulse air pump 29 is equipped with a third wireless Bluetooth module. The controller 15 is wirelessly connected to the third wireless Bluetooth module. The controller 15 can control the start and stop of the pulse air pump 29.

[0054] The specific operation method of this invention is as follows:

[0055] The operator inputs the production formula into the computer 14 in the control center. The weighing sensor 11 of the base oil tank 1 provides real-time feedback on the oil weight. The automatic raw material pump 8 adjusts the pump speed according to the signal given by the central computer. The weighing sensor 11 of the additive tank 2 monitors the dosage of the additive. The automatic additive pump 9 delivers the additive precisely according to the ratio given by the central computer.

[0056] After the base oil and additives are combined in the mixing pipe, they flow through the heat transfer oil heating automatic control valve 6. The intelligent temperature instrument 10 detects the temperature of the mixed oil in real time and feeds it back to the central computer. The central computer controls the heat transfer oil heating automatic control valve 6 to adjust the temperature and heat the oil according to the weight of the mixed lubricating oil.

[0057] After heating, the oil enters the mixing tank 3 through the feed pipe 7. The intelligent liquid level gauge 28 monitors the liquid level. When the liquid level reaches 90% of the volume, the automatic speed of the self-controlled raw material pump 8 and the self-controlled additive pump 9 is reduced to prevent overflow or the tank is shut down.

[0058] The intelligent temperature instrument 10 on the blending tank 3 continuously monitors the oil temperature. If the oil temperature exceeds the predetermined value, the controller 15 will reduce or close the opening of the heat transfer oil heating self-control valve 6 through the second remote station module 17, thereby reducing or stopping the heating treatment of the lubricating oil. At the same time, the cooling device will be activated to cool down the high-temperature oil in the blending tank 3 and then transport it back to the blending tank 3.

[0059] When the oil temperature in blending tank 3 reaches the standard value, the cooling device is turned off.

[0060] I. Precise Temperature Control of This Invention

[0061] The base oil and additives are heated in real time by the heat transfer oil heating self-control valve 6 during transportation to eliminate local overheating areas inside the tank;

[0062] Timely response to over-temperature

[0063] When the temperature exceeds the threshold, the system automatically reduces power / closes the valve and activates the cooling device in an emergency. This effectively solves the technical problem of existing technologies failing to address temperature runaway in a timely manner, leading to a deterioration in the processing quality of lubricating oil.

[0064] II. Energy Efficiency and Production Efficiency Improvement of the Invention

[0065] Pipeline heating thermal efficiency: The base oil and additives are heated in real time during transportation via the heat transfer oil heating self-control valve 6, and the flow rate is fed back by the weighing sensor 11. Thus, different proportions of lubricating oil can be customized and heated in real time according to actual conditions. Compared with the existing technology of heating the lubricating oil in the mixing tank 3 as a whole through the heating wire, it is more efficient and more energy-saving.

[0066] Continuous production process: Raw material conveying, heating and feeding are carried out simultaneously, effectively shortening processing time and improving processing efficiency.

[0067] Enhanced cooling: Three-stage cooling (plate heat exchanger + stirring and temperature equalization + swirling jet) provides higher cooling efficiency compared to the natural cooling of existing technologies, further improving processing efficiency.

[0068] III. Quality Consistency Assurance

[0069] Viscosity homogenization control: Pipeline heating ensures that the oil is mixed at the same temperature / shear rate, effectively avoiding viscosity stratification caused by in-tank heating in existing technologies;

[0070] Swirl mixing enhancement: A 35° inclined rectangular nozzle generates a forced vortex, which reduces the temperature difference within the mixing tank 3.

[0071] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automated system for blending and mixing lubricating oil, comprising a base oil tank (1), an additive tank (2), a blending tank (3), and a finished product tank (4), wherein the outlet of the blending tank (3) is connected to the finished product tank (4) via a discharge pipe (5), characterized in that, The blending tank (3) is connected to a heat transfer oil heating automatic control valve (6) through a feed pipe (7). One end of the base oil tank (1) is connected to an automatic raw material pump (8) through a connecting pipe. One end of the additive tank (2) is connected to an automatic additive pump (9) through a connecting pipe. The automatic additive pump (9) and the automatic raw material pump (8) are both connected to the heat transfer oil heating automatic control valve (6) through connecting pipes. The blending tank (3) and the base oil tank (1) are both equipped with an intelligent temperature instrument (10) and a weighing sensor (11). The additive tank (2) is equipped with a weighing sensor (11).

2. The automated lubricating oil blending and stirring system according to claim 1, characterized in that, An automatic discharge valve (12) is installed on the discharge pipe (5) connecting the mixing tank (3) and the finished product tank (4). The bottom of the mixing tank (3) is fixed with four rectangular support legs (13), and the discharge pipe (5) is located between the four support legs (13).

3. The automated lubricating oil blending and stirring system according to claim 1, characterized in that, It also includes a control center computer (14), a controller (15), a first remote station module (16), and a second remote station module (17). The control center computer (14) is connected to the controller (15) via a signal line, and the controller (15) is connected to the first remote station module (16) and the second remote station module (17) via signal lines respectively. The first remote station module (16) is used to connect to and collect signals from the temperature sensor and the weighing sensor (11); The second remote station module (17) is used to connect to and control the automatic control raw material pump, the automatic control additive pump, the heat transfer oil heating automatic control valve, and the automatic control discharge valve.

4. The automated lubricating oil blending and stirring system according to claim 3, characterized in that, The mixing tank (3) is connected to a cooling device, which includes a plate heat exchanger (18) and a cooling tank (19). An inclined injection pipe (20) is fixed to the inner wall of the mixing tank (3). One end of the injection pipe (20) penetrates the side wall of the mixing tank (3). The plate heat exchanger (18) is connected to the end of the injection pipe (20) outside the mixing tank (3) via a discharge pipe (22). A pump (21) is installed on the discharge pipe (22). One end of the cooling tank (19) is connected to a first oil pipe (23). One end is connected to a second oil pipe (24), which is connected to a plate heat exchanger (18). The first oil pipe (23) is connected to a mixing tank (3). The first oil pipe (23) is located above the second oil pipe (24). A stirring motor (25) is fixed on the top of the cooling tank (19). The output shaft of the stirring motor (25) is connected to a drive shaft (27). One end of the drive shaft (27) extends into the cooling tank (19). Several stirring rods (26) are fixed on the outer wall of the drive shaft (27).

5. The automated lubricating oil blending and stirring system according to claim 4, characterized in that, The bottom wall of the mixing tank (3) is conical.

6. The automated lubricating oil blending and stirring system according to claim 4, characterized in that, The nozzle of the injection pipe (20) is rectangular.

7. The automated lubricating oil blending and stirring system according to claim 1, characterized in that, The mixing tank (3) is equipped with an intelligent liquid level gauge (28).

8. The automated lubricating oil blending and stirring system according to claim 3, characterized in that, A pulse air pump (29) is fixed on the outer wall of the mixing tank (3). A guide pipe (30) is provided on the outer surface of one end of the pulse air pump (29). The guide pipe (30) passes through the side wall of the mixing tank (3) and is located inside the mixing tank (3). A plurality of pulse nozzles (31) are provided at one end.

9. The automated lubricating oil blending and stirring system according to claim 8, characterized in that, The intelligent temperature instrument (10), weighing sensor (11), and intelligent level gauge (28) are all equipped with a first wireless Bluetooth module. The first remote station module (16) is wirelessly connected to several first wireless Bluetooth modules. The pump (21), stirring motor (25), heat transfer oil heating self-controlled valve (6), self-controlled discharge valve (12), self-controlled additive pump (9), and self-controlled raw material pump (8) are all equipped with a second wireless Bluetooth module. The second remote station module (17) is wirelessly connected to several second wireless Bluetooth modules. The pulse air pump (29) is equipped with a third wireless Bluetooth module. The controller (15) is wirelessly connected to the third wireless Bluetooth module.

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