A lubricating oil blending control system based on industrial control software and a stirring tank

Abstract

The application belongs to the technical field of lubricating oil preparation, and discloses a lubricating oil preparation control system for realizing process control based on industrial control software, which comprises a controller, wherein an industrial control software is run in the controller, and the industrial control software is used for executing the following steps: storing a working condition-parameter mapping relationship which is constructed in advance based on historical operation data; acquiring operation state parameters of a stirring power source and working condition parameters of a circulating loop; identifying a current working condition according to the acquired parameters, wherein the working condition at least comprises a high-resistance working condition, a low-liquid-level working condition and a flow passage blockage working condition. Through the working condition-parameter mapping relationship built in the controller, abnormal working conditions such as high resistance, low liquid level and flow passage blockage are identified in real time, and corresponding adaptive adjustment strategies are executed, so that efficient and stable mixing effects are maintained under different working conditions, and the automation level and mixing consistency of the equipment are improved.

Description

Technical Field

[0001] This invention belongs to the field of lubricating oil modulation technology, specifically a lubricating oil modulation control system and a mixing tank based on industrial control software to achieve process control. Background Technology

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It mainly plays the roles of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering, and is usually composed of two parts: base oil and additives.

[0003] In lubricating oil processing, existing mixing tanks are mostly operated with fixed parameters, which cannot dynamically adjust the stirring speed, circulation flow rate, or filtration capacity according to working conditions such as oil viscosity, liquid level changes, or flow channel blockage. This leads to decreased mixing efficiency under high viscosity conditions, easy dry pumping at low liquid levels, and inability to automatically clear blockages, affecting the equipment's adaptability and mixing effect. In addition, existing control systems are mostly implemented using embedded or PLC, with fixed control logic and a lack of an open process control architecture based on industrial control software, making it difficult to achieve flexible parameter adaptive adjustment and data integration with upper-level information systems.

[0004] In addition, the heated mixing tank is the core mixing equipment. It reduces the viscosity of the base oil by heating and disperses the additives by rotating the stirring blades. However, existing heated mixing tanks usually only use stirring blades for stirring, which easily forms a mixing dead zone at the bottom of the tank. This causes the additives to accumulate and disperse unevenly in local areas, resulting in slow exchange between the upper and lower oil layers, which easily leads to stratification and affects the quality of the finished lubricating oil. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a lubricating oil modulation control system based on industrial control software for process control, comprising:

[0006] The controller, which runs industrial control software, performs the following steps:

[0007] It stores a pre-built working condition-parameter mapping relationship based on historical operating data;

[0008] Obtain the operating status parameters of the stirring power source and the working condition parameters of the circulation loop;

[0009] The current operating condition is identified based on the acquired parameters, and the operating condition includes at least high resistance, low liquid level, and flow channel blockage.

[0010] The identified current operating condition is input into the operating condition-parameter mapping relationship to obtain the corresponding optimization adjustment parameters;

[0011] An adaptive adjustment strategy is executed based on the optimized adjustment parameters. The adaptive adjustment strategy includes at least one of the following: adjusting the output speed of the stirring power source, adjusting the flow capacity of the filtration path, and adjusting the output flow rate of the fluid delivery source.

[0012] Under normal operating conditions, the mixing endpoint is determined based on the mixing progress parameters, and the mixing power source and fluid delivery source are stopped when the endpoint is reached.

[0013] On the other hand, based on the same inventive concept, this application also provides a lubricating oil mixing tank based on industrial control software to realize process control. The mixing tank includes a mixing tank and a mixing system as described above, wherein the mixing power source is a motor fixedly connected to the mixing tank.

[0014] The output end of the motor extends through the interior of the mixing tank and is fixedly connected to a stirring rod, and also includes:

[0015] A circulation return component is installed on the mixing tank to circulate and pump the lubricating oil inside the mixing tank.

[0016] The circulating return component includes a fluid delivery source, which is a circulating pump fixedly connected to the stirring tank via a bracket. A square sleeve is fixedly connected inside the stirring tank. The inlet end of the circulating pump is connected to the top of the square sleeve. A suction sleeve is slidably connected inside the square sleeve. A position adjustment component is fixedly connected to the suction sleeve.

[0017] The discharge end of the circulating pump is connected to a metal pipe, a circular sleeve is fixedly connected to the stirring rod, one end of the metal pipe extends into the inside of the circular sleeve, a symmetrically arranged guide sleeve is connected to the circular sleeve, a rotary drive component is provided at the top of the guide sleeve, a guide cylinder is connected to the bottom of the guide sleeve, and a spray cylinder is provided inside the guide cylinder.

[0018] The circulating pump, square sleeve, suction sleeve, metal pipe, round sleeve, guide sleeve, guide cylinder and spray cylinder are interconnected to form a circulation loop;

[0019] The anti-backflow filter element is located inside the square sleeve, and its internal channels form a filtration path for filtering impurities in the lubricating oil.

[0020] In the above technical solution, preferably, the position adjusting component includes a triangular plate, which is fixedly connected to the inside of the mixing tank. A rotating rod is fixedly connected to the inside of the triangular plate via a bearing. A toothed ring one is fixedly connected to the rotating rod via a connecting plate. A toothed ring two that meshes with the toothed ring one is fixedly connected to the mixing rod via a connecting plate. A sliding rod is fixedly connected to the bottom of the toothed ring one. A sliding sleeve is fixedly connected to the top of the liquid suction sleeve. The sliding rod is slidably connected inside the sliding sleeve.

[0021] As the gear ring rotates, it drives the slide rod to move the sliding sleeve and the liquid suction sleeve back and forth along the direction of approaching / moving away from the square sleeve, thereby sucking up the lubricating oil from different positions inside the mixing tank.

[0022] In the above technical solution, preferably, the rotary drive component includes a commutator, which is fixedly connected to the flow guide sleeve. The input end of the commutator is fixedly connected to a pinion gear via a positioning rod. A face gear ring meshing with the pinion gear is fixedly connected to the top of the inner wall of the mixing tank. The output end of the commutator passes through the flow guide sleeve and is fixedly connected to a reciprocating screw. A rotating plate is fixedly connected to the bottom of the reciprocating screw. The spray cylinder has symmetrically arranged openings that are slidably connected to the rotating plate. A depth adjustment component is provided on the reciprocating screw.

[0023] A protective sleeve is fixedly connected to the flow guide sleeve. The protective sleeve is fitted on the outside of the positioning rod and the commutator. A concave plate is fitted on the stirring rod. The bottom of the concave plate is fixedly connected to the inside of the stirring tank.

[0024] In the above technical solution, preferably, the depth adjustment component includes a sleeve plate, which is movably connected to the reciprocating lead screw via a connecting rod and a connecting sleeve. A symmetrically arranged L-shaped plate is fixedly connected to the bottom of the sleeve plate. An annular groove that is slidably connected to the L-shaped plate is opened inside the spray cylinder. A symmetrically arranged sliding groove is opened inside the guide cylinder. Both ends of the sleeve plate are slidably connected to the inside of the sliding groove.

[0025] In the above technical solution, preferably, a sealing ring is fixedly connected to the top of the inner wall of the mixing tank, the surface of the sealing ring is in contact with the inner wall of the circular sleeve, and symmetrically arranged limiting sleeves are fixedly connected to the mixing rod, the inner wall of the limiting sleeve is in contact with the surface of the spray cylinder.

[0026] In the above technical solution, preferably, the anti-backflow filter element includes a threaded sleeve, which is threadedly connected to the inside of the square sleeve. A trapezoidal disk is slidably connected inside the threaded sleeve. A filter cylinder is fixedly installed on the trapezoidal disk by bolts. A baffle is fitted on the filter cylinder, and the baffle is fixedly connected to the inside of the square sleeve.

[0027] A fixing sleeve is fixedly connected to the filter screen, and a micro motor is fixedly connected inside the fixing sleeve. A valve stem is fixedly connected to the output end of the micro motor. One end of the valve stem extends into the interior of the filter cylinder, and a filter screen is fixedly connected to the valve stem.

[0028] In the above technical solution, preferably, a magnetic suction rod located inside the filter cylinder is fixedly connected to the trapezoidal disk, an anti-rotation block is fixedly connected to the bottom of the filter cylinder, an anti-rotation groove is opened at the bottom of the inner wall of the square sleeve, and the anti-rotation block is slidably connected inside the anti-rotation groove.

[0029] In the above technical solution, preferably, the square sleeve is provided with an anti-loosening component, the anti-loosening component includes a support plate, the support plate is fixedly connected to the square sleeve, a spring pin is fixedly connected to the support plate, one end of the spring pin is fixedly connected to a sleeve fitted on the support plate, the threaded sleeve is provided with a triangular groove, and one end of the sleeve extends into the interior of the triangular groove.

[0030] In the above technical solution, preferably, the mixing tank is provided with a detection component, the detection component includes a liquid level sensor, the liquid level sensor is fixedly connected to the mixing tank, the detection end of the liquid level sensor extends into the interior of the mixing tank, the liquid level sensor is electrically connected to a controller, and the controller is connected to an alarm.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] This invention employs a process control architecture based on industrial control software, implementing adaptive adjustment strategies in software. This facilitates updating the condition-parameter mapping relationship based on actual operating data, improving system adaptability. Through the controller's built-in condition-parameter mapping relationship, abnormal operating conditions such as high resistance, low liquid level, and flow channel blockage are identified in real time, and corresponding adaptive adjustment strategies are executed: increasing the stirring speed and decreasing the filter angle to reduce resistance at high viscosity; adjusting the circulation pump flow rate to generate pressure fluctuations for unblocking when the flow channel is blocked; and stopping the circulation pump while maintaining stirring at low liquid levels to prevent dry pumping and additive sedimentation. Simultaneously, the system can automatically determine the mixing endpoint based on mixing progress parameters, avoiding over-mixing or under-mixing. These control functions enable the mixing tank to maintain efficient and stable mixing under different operating conditions, improving the automation level and mixing consistency of the equipment.

[0033] This invention utilizes a stirring rod to drive a position adjustment component and a suction sleeve to reciprocate. A circulating pump and suction sleeve then dynamically draw lubricating oil from different locations. Finally, the stirring rod, via a rotary drive, rotates a spray nozzle to spray the oil out, significantly improving the convection efficiency of the oil within the mixing tank and effectively eliminating dead zones at the bottom. Combined with the stirring action of the stirring rod, it enhances the uniformity of mixing between the base oil and additives. The entire system relies on a motor to achieve coordinated operation of multiple components, eliminating the need for an additional power source and improving the processing efficiency of the lubricating oil.

[0034] Furthermore, although lubricating oil can be evenly mixed during the mixing process, impurities and metal particles can easily enter due to mechanical wear or dust, affecting the quality of the finished product. However, through the design of the threaded sleeve, trapezoidal disc, and filter cylinder in the anti-backflow filter, the filter cylinder can efficiently intercept impurities in the oil. Combined with the filter screen controlled by a micro motor, it can ensure that the oil enters the circulation path through the filter cylinder, and prevent the lubricating oil inside the metal pipe from flowing back after the circulation pump is turned off, thus preventing impurities from flowing back into the mixing tank. The filtration effect is good, and it is easy to disassemble and maintain.

[0035] Furthermore, if the liquid level in the mixing tank is too low during the process of the circulating pump drawing lubricating oil, the circulating pump may be damaged due to dry running. However, through the structural design of the liquid level sensor, controller, and alarm in the detection component, the liquid level sensor monitors the lubricating oil level in the mixing tank in real time. When the liquid level is lower than the set threshold, the controller receives a signal to shut down the circulating pump and trigger the alarm, promptly reminding the operator that the oil level is low and the circulating pump has not been shut down, thus preventing the circulating pump from being damaged due to dry running. Attached Figure Description

[0036] Figure 1 This is a system flowchart of the present invention;

[0037] Figure 2 This is a system connection diagram of the present invention;

[0038] Figure 3 This is a schematic diagram of the structure of the present invention;

[0039] Figure 4 This is a cross-sectional schematic diagram of the mixing tank of the present invention;

[0040] Figure 5 This is a schematic diagram of the structure of the spray cylinder of the present invention;

[0041] Figure 6 This is a cross-sectional schematic diagram of the protective sleeve of the present invention;

[0042] Figure 7 This is a schematic diagram of the position adjustment component of the present invention;

[0043] Figure 8 This is a cross-sectional schematic diagram of the sleeve of the present invention;

[0044] Figure 9 This is a schematic diagram of the structure of the filter cartridge of the present invention;

[0045] Figure 10 This is a cross-sectional schematic diagram of the filter cartridge of the present invention;

[0046] Figure 11 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0047] In the diagram: 1. Mixing tank; 2. Motor; 3. Mixing rod; 4. Circulation return component; 41. Circulation pump; 42. Square sleeve; 43. Liquid suction sleeve; 44. Position adjustment component; 441. Triangular plate; 442. Rotating rod; 443. Gear ring one; 444. Gear ring two; 445. Sliding rod; 446. Sliding sleeve; 45. Metal tube; 46. Round sleeve; 47. Guide sleeve; 48. Rotary drive component; 481. Commutator; 482. Pinion; 483. Face gear ring; 484. Reciprocating lead screw; 485. Rotating plate; 486. Opening; 487. Depth adjustment component; 4871. Sleeve plate; 4872. L-shaped plate; 4 873. Annular groove; 4874. Slide groove; 49. Guide tube; 410. Spray tube; 5. Anti-backflow filter element; 51. Threaded sleeve; 52. Trapezoidal disc; 53. Filter cylinder; 54. Baffle sleeve; 55. Fixing sleeve; 56. Miniature motor; 57. Valve stem; 58. Filter screen; 6. Protective sleeve; 7. Concave plate; 8. Sealing ring; 9. Limiting sleeve; 10. Magnetic rod; 11. Anti-rotation block; 12. Anti-rotation groove; 13. Anti-loosening component; 131. Support plate; 132. Spring pin; 133. Compression sleeve; 134. Triangular groove; 14. Detection component; 141. Liquid level sensor; 142. Alarm device. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] like Figure 1 and Figure 2 As shown, this invention provides a lubricating oil modulation control system based on industrial control software for process control, comprising:

[0050] The controller runs industrial control software, which is used to perform the following steps:

[0051] It stores a pre-built working condition-parameter mapping relationship based on historical operating data;

[0052] Obtain the operating status parameters of the stirring power source and the working condition parameters of the circulation loop;

[0053] The current operating condition is identified based on the acquired parameters. The operating conditions include at least high resistance, low liquid level, and flow channel blockage.

[0054] The identified current operating condition is input into the operating condition-parameter mapping relationship to obtain the corresponding optimization adjustment parameters;

[0055] An adaptive adjustment strategy is executed based on optimized adjustment parameters. The adaptive adjustment strategy includes at least one of the following: adjusting the output speed of the stirring power source, adjusting the flow capacity of the filtration path, and adjusting the output flow rate of the fluid delivery source.

[0056] Under normal operating conditions, the mixing endpoint is determined based on the mixing progress parameters, and the mixing power source and fluid delivery source are stopped when the endpoint is reached.

[0057] Specifically, the controller is electrically connected to the stirring power source via a frequency converter to adjust its speed, electrically connected to the micro motor 56 of the filtration path via a stepper motor driver to adjust the flow angle of the filter screen 58, and electrically connected to the fluid delivery source via a frequency converter to control its output flow rate.

[0058] The operating condition-parameter mapping relationship is pre-built in the following way:

[0059] Data samples were collected from multiple historical operation processes of the mixing tank. Each set of sample data included the effective value of the current of the mixing power source. Liquid level Pressure value at the outlet of circulating pump 41 Flow rate at the outlet of circulating pump 41 And the optimal adjustment parameters (including speed adjustment) obtained by manual calibration or by optimization algorithm under the corresponding operating conditions. Filter angle adjustment Circulating pump 41 flow rate regulation );

[0060] Machine learning algorithms such as linear regression, decision trees, or neural networks are used to train the sample data to obtain ( For input, with ( , , The output is a mapping model; or a lookup table method is used to divide the current, liquid level, pressure and flow rate into several intervals, and each interval combination corresponds to a set of preset adjustment parameters, which are stored in the controller's non-volatile memory.

[0061] Taking linear regression as an example, its original mathematical model is:

[0062]

[0063] in For the input column vector, To output column vectors, This is the weight matrix. As the bias vector, this application does not modify the original linear regression formula, but directly applies the model to train historical sample data. The training process uses the least squares method to minimize the loss function:

[0064]

[0065] in For the sample size, , The first The input and output of the sample groups are used to solve the optimization problem, resulting in the weight matrix. and bias vector This completes the construction of the working condition-parameter mapping relationship. If a decision tree or neural network is used, its original algorithm is also a well-known technology in this field, and the specific construction process will not be described in detail.

[0066] To obtain the above parameters in real time, this embodiment has the following monitoring elements installed at the corresponding locations:

[0067] A current transformer or Hall effect current sensor (not shown in the figure) is installed on the power supply line of motor 2 to monitor the effective value of the current of the stirring power source. The output of the current sensor is electrically connected to the input port of the controller to collect the motor operating current in real time.

[0068] A liquid level sensor 141 is fixedly installed on the side wall or top of the mixing tank 1 to monitor the liquid level. The detection end of the liquid level sensor 141 extends into the inside of the mixing tank 1 and is electrically connected to the controller to detect the lubricating oil level in the tank in real time.

[0069] A pressure sensor (not shown in the figure) is installed between the discharge end of the circulating pump 41 and the metal pipe 45, or on the pipeline of the metal pipe 45, to monitor the outlet pressure value of the circulating pump 41. The output of the pressure sensor is electrically connected to the controller to detect the outlet pressure of the circulating pump in real time.

[0070] A flow meter (e.g., an electromagnetic flow meter or a turbine flow meter, not shown in the figure) is installed on the metal pipe 45 to monitor the outlet flow rate of the circulating pump 41. The output of the flow meter is electrically connected to the controller and is used to detect the flow rate of lubricating oil in the circulation loop in real time.

[0071] The controller identifies the current operating condition according to the following rules:

[0072] when > and > When, it is determined to be a high-resistance operating condition; when When the liquid level is low, it is determined to be a low liquid level condition; when and When this occurs, it is determined to be a flow channel blockage condition; among which , , , This is a preset threshold.

[0073] The adaptive adjustment strategy specifically includes:

[0074] The controller adjusts the output speed of the stirring power source by regulating the motor power supply frequency through the frequency converter, thereby increasing the motor speed from the rated speed. To simultaneously increase the reciprocating frequency of the liquid suction sleeve 43 and the rotation and lifting frequency of the liquid spraying cylinder 410;

[0075] To adjust the flow capacity of the filter path, the controller sends pulse signals to a micro motor via a stepper motor driver, driving the filter to rotate. To change the flow cross-sectional area of ​​the filter channel; for high resistance conditions, reduce the flow angle; for low liquid level conditions or when stopping at the end, rotate to the completely blocked position.

[0076] The controller adjusts the output flow rate of the fluid delivery source by regulating the speed of the circulating pump via a frequency converter, thereby increasing the output flow rate. When a flow channel blockage is detected, the controller controls the circulating pump to generate short-term pulse-like flow changes, using pressure fluctuations to clear the blockage.

[0077] Assuming the currently collected parameter is, for example, the motor current. The current level is higher than the high current threshold, the liquid level L is higher than the low liquid level threshold, and the circulating pump outlet pressure is higher. The flow rate did not exceed the high pressure threshold. Within the normal range, according to the operating condition identification rules, when > and > When the condition is identified as a high-drag condition, the current parameters are input into a trained linear regression model, and the model outputs corresponding optimization and adjustment parameters, such as... For positive, Negative, =0, after the controller executes, the motor speed increases, the reciprocating frequency of the liquid suction sleeve 43 and the lifting frequency of the liquid spraying cylinder 410 increase synchronously, the flow angle of the filter screen decreases, the filtration resistance decreases, and the mixing efficiency is improved.

[0078] If pressure Further increase And traffic Further reduce below ,satisfy and When the condition is determined to be a flow channel blockage, the model outputs... It is positive and relatively large, for example =+200%, the controller increases the instantaneous flow rate of the circulating pump for a short period of time, generating pressure fluctuations to impact the blockage, and then returns to the normal flow rate to clear the blockage;

[0079] The mixing progress parameters include the fluctuation amplitude of the stirring power source current. and cumulative cycle volume At least one of the following; the controller calculates the peak-to-peak fluctuation amplitude of the current within the sliding time window in real time, when continuously below the preset fluctuation threshold At time, or cumulative cycle volume When the preset target total circulation volume is reached, it is determined to be the mixing endpoint; the controller uses OR logic, and if any condition is met, the stirring power source and fluid delivery source will be stopped, and the filtration path will be blocked.

[0080] Set the sliding time window length to sampling frequency Each window contains several current sampling points, and the peak-to-peak fluctuation amplitude within the window is calculated:

[0081]

[0082] Assuming multiple consecutive windows It shows a gradual downward trend, when several consecutive windows... All are below the preset fluctuation threshold When the time is reached, it is determined to be the end point of mixing;

[0083] Or, cumulative loop count ,in For instantaneous flow, For the sampling interval, when When the preset target total circulation volume is reached, it is also determined to be the mixing endpoint.

[0084] like Figures 3 to 5 As shown, on the other hand, this application also provides a lubricating oil mixing tank based on industrial control software to realize process control. The mixing tank includes a mixing tank 1 and the aforementioned lubricating oil mixing system. The mixing power source is a motor 2 fixedly connected to the mixing tank 1.

[0085] The output end of motor 2 extends into the interior of mixing tank 1 and is fixedly connected to stirring rod 3, and also includes:

[0086] The circulating return component 4 is installed on the mixing tank 1 and is used to circulate and pump the lubricating oil inside the mixing tank 1 to improve the mixing efficiency.

[0087] The circulating return component 4 includes a fluid delivery source, which is a circulating pump 41 fixedly connected to the stirring tank 1 via a bracket. A square sleeve 42 is fixedly connected inside the stirring tank 1. The inlet end of the circulating pump 41 is connected to the top of the square sleeve 42. A suction sleeve 43 is slidably connected inside the square sleeve 42. A position adjustment component 44 is fixedly connected to the suction sleeve 43.

[0088] The discharge end of the circulating pump 41 is connected to a metal pipe 45. A circular sleeve 46 is fixedly connected to the stirring rod 3. One end of the metal pipe 45 extends into the inside of the circular sleeve 46. A symmetrically arranged guide sleeve 47 is connected to the circular sleeve 46. A rotary drive component 48 is provided at the top of the guide sleeve 47. A guide cylinder 49 is connected to the bottom of the guide sleeve 47. A spray cylinder 410 is provided inside the guide cylinder 49.

[0089] The circulating pump 41, square sleeve 42, suction sleeve 43, metal pipe 45, round sleeve 46, guide sleeve 47, guide cylinder 49 and spray cylinder 410 are interconnected to form a circulation loop;

[0090] The anti-backflow filter element 5 is disposed inside the square sleeve 42, and its internal channels form a filter path for filtering impurities in the lubricating oil.

[0091] Specifically, the mixing tank 1 consists of an inner cylinder, an outer cylinder, a heat insulation cylinder, and a top cover. The top cover is fixedly installed on the top of the inner cylinder with bolts. Heat transfer oil can flow between the inner and outer cylinders. A heat transfer oil circulation pipe is connected to the outer cylinder. An inlet pipe and a feed pipe are connected to the top cover. A discharge solenoid valve is connected to the bottom of the inner cylinder. The circulation pump 41 is a gear pump. The metal pipe 45 is a stainless steel pipe. A heat insulation cotton pipe is fixedly connected to the surface of the metal pipe 45. The surface of the spray cylinder 410 has spray holes distributed in a spiral pattern. The front and back of the suction sleeve 43 are provided with three square oil suction ports, which are located inside the mixing tank 1.

[0092] like Figures 4 to 7 As shown, the position adjustment component 44 includes a triangular plate 441, which is fixedly connected to the inside of the mixing tank 1. A rotating rod 442 is fixedly connected to the inside of the triangular plate 441 via a bearing. A toothed ring 443 is fixedly connected to the rotating rod 442 via a connecting plate. A toothed ring 444 that meshes with the toothed ring 443 is fixedly connected to the mixing rod 3 via a connecting plate. A sliding rod 445 is fixedly connected to the bottom of the toothed ring 443. A sliding sleeve 446 is fixedly connected to the top of the liquid suction sleeve 43. The sliding rod 445 is slidably connected inside the sliding sleeve 446.

[0093] As the gear ring 443 rotates, it drives the slide rod 445 to move the slide sleeve 446 and the liquid suction sleeve 43 back and forth along the direction of approaching / moving away from the square sleeve 42, thereby sucking up the lubricating oil from different positions inside the mixing tank 1.

[0094] Specifically, the mixing tank 1 is internally fixedly connected with symmetrically arranged support guide rods, and the sliding sleeve 446 is slidably fitted onto the surface of the support guide rods; the width of the inner wall of the sliding sleeve 446 is greater than the diameter of the toothed ring 443; when the stirring rod 3 rotates, it drives the toothed ring 443 to rotate through the toothed ring 444, so that the toothed ring 443 drives the sliding rod 445 to slide inside the sliding sleeve 446 through the rotating rod 442. At the same time, the sliding rod 445 pushes the sliding sleeve 446 to move back and forth, thereby driving the liquid suction sleeve 43 to move back and forth along the direction of approaching or moving away from the square sleeve 42, so that the liquid suction sleeve 43 can periodically suck up the lubricating oil in different areas of the mixing tank 1; this dynamic suction method avoids the problem of uneven mixing caused by only sucking oil from a single location, and, together with the stirring action of the stirring rod 3, further eliminates mixing dead zones.

[0095] like Figures 3 to 6 As shown, the rotary drive component 48 includes a commutator 481, which is fixedly connected to the guide sleeve 47. The input end of the commutator 481 is fixedly connected to a pinion 482 via a positioning rod. A toothed ring 483 that meshes with the pinion 482 is fixedly connected to the top of the inner wall of the mixing tank 1. The output end of the commutator 481 passes through the guide sleeve 47 and is fixedly connected to a reciprocating screw 484. A rotating plate 485 is fixedly connected to the bottom of the reciprocating screw 484. The spray cylinder 410 has symmetrically arranged openings 486 that are slidably connected to the rotating plate 485. A depth adjustment component 487 is provided on the reciprocating screw 484.

[0096] Specifically, the commutator 481 is a bevel gear commutator 481, which has two meshing bevel gears inside, which can achieve the effect of changing the transmission direction. When the stirring rod 3 rotates, the stirring rod 3 will drive the commutator 481 to rotate through the circular sleeve 46 and the guide sleeve 47. Since the pinion 482 meshes with the toothed ring 483 and the toothed ring 483 is fixed, the pinion 482 will drive the reciprocating screw 484 to rotate through the commutator 481. The reciprocating screw 484 pushes the spray cylinder 410 to rotate through the rotating plate 485 and the opening 486 to achieve rotary oil spraying.

[0097] like Figure 6 and Figure 11 As shown, the depth adjustment component 487 includes a sleeve plate 4871, which is movably connected to the reciprocating screw 484 via a connecting rod and a connecting sleeve. The bottom of the sleeve plate 4871 is fixedly connected to symmetrically arranged L-shaped plates 4872. The inside of the spray cylinder 410 is provided with an annular groove 4873 that is slidably connected to the L-shaped plate 4872. The inside of the guide cylinder 49 is provided with symmetrically arranged sliding grooves 4874. Both ends of the sleeve plate 4871 are slidably connected to the inside of the sliding grooves 4874.

[0098] Specifically, when the reciprocating screw 484 rotates, it drives the sleeve 4871 to move up and down reciprocally. The slide groove 4874 can limit the sleeve 4871, so that the sleeve 4871 can only move up and down reciprocally. The sleeve 4871 drives the rotating spray cylinder 410 to move up and down reciprocally through the L-shaped plate 4872 and the annular groove 4873, so as to spray oil to different depths, so that the sprayed oil can fully contact and mix with the lubricating oil in each layer in the mixing tank 1, avoiding the problem of insufficient oil exchange and layered mixing caused by fixed depth oil spraying, and further expanding the mixing range.

[0099] like Figures 3 to 6 As shown, a protective sleeve 6 is fixedly connected to the guide sleeve 47. The protective sleeve 6 is fitted on the outside of the positioning rod and the commutator 481. A concave plate 7 is fitted on the stirring rod 3. The bottom of the concave plate 7 is fixedly connected to the inside of the stirring tank 1.

[0100] Specifically, by setting the protective sleeve 6, the surface of the commutator 481 can be protected, and the positioning rod can be supported to improve the stability of the positioning rod when rotating. By setting the concave plate 7, the stirring rod 3 can be limited to prevent the stirring rod 3 from shaking when rotating.

[0101] like Figures 3 to 5 As shown, a sealing ring 8 is fixedly connected to the top of the inner wall of the mixing tank 1. The surface of the sealing ring 8 is in contact with the inner wall of the circular sleeve 46. A symmetrically arranged limiting sleeve 9 is fixedly connected to the stirring rod 3. The inner wall of the limiting sleeve 9 is in contact with the surface of the spray cylinder 410.

[0102] Specifically, by setting the sealing ring 8, the gap between the mixing tank 1 and the circular sleeve 46 can be sealed to prevent oil from flowing out through the gap. At the same time, the limiting sleeve 9 can limit the spray cylinder 410 and improve the stability of the spray cylinder 410 when it moves up and down.

[0103] like Figures 8 to 10 As shown, the anti-backflow filter element 5 includes a threaded sleeve 51, which is threadedly connected to the inside of the square sleeve 42. A trapezoidal disk 52 is slidably connected inside the threaded sleeve 51. A filter cylinder 53 is fixedly installed on the trapezoidal disk 52 by bolts. A baffle 54 is fitted on the filter cylinder 53 and is fixedly connected to the inside of the square sleeve 42.

[0104] A fixing sleeve 55 is fixedly connected to the filter screen 58. A micro motor 56 is fixedly connected inside the fixing sleeve 55. A valve stem 57 is fixedly connected to the output end of the micro motor 56. One end of the valve stem 57 extends into the interior of the filter cylinder 53. The filter screen 58 is fixedly connected to the valve stem 57.

[0105] Specifically, the micro motor 56 is a micro geared motor. The micro motor 56 and the circulation pump 41 are turned on and off simultaneously. The micro motor 56 can only drive the valve stem 57 and the filter screen 58 to rotate 90 degrees. When filtration is required, the micro motor 56 drives the filter screen 58 to a horizontal position through the valve stem 57, and the lubricating oil can be filtered through the filter cylinder 53. When the circulation pump 41 is turned off, the micro motor 56 drives the valve stem 57 and the filter screen 58 to rotate 90 degrees, so that the filter screen 58 is vertical. The filter screen 58 will block impurities inside the filter cylinder 53, and the lubricating oil can enter the mixing tank 1 through the filter screen 58.

[0106] like Figures 8 to 10 As shown, a magnetic suction rod 10 located inside the filter cylinder 53 is fixedly connected to the trapezoidal disk 52, and an anti-rotation block 11 is fixedly connected to the bottom of the filter cylinder 53. An anti-rotation groove 12 is opened at the bottom of the inner wall of the square sleeve 42, and the anti-rotation block 11 is slidably connected inside the anti-rotation groove 12.

[0107] Specifically, by setting the magnetic suction rod 10, metal impurities can be adsorbed to prevent them from clogging the filter cartridge 53; the anti-rotation block 11 and the anti-rotation groove 12 work together to limit the position of the filter cartridge 53, improve the stability of the filter cartridge 53, and prevent the fixed sleeve 55 from colliding with the inner wall of the square sleeve 42.

[0108] like Figure 8 As shown, the square sleeve 42 is provided with an anti-loosening component 13. The anti-loosening component 13 includes a support plate 131, which is fixedly connected to the square sleeve 42. A spring pin 132 is fixedly connected to the support plate 131. One end of the spring pin 132 is fixedly connected to a retainer 133 sleeved on the support plate 131. A triangular groove 134 is provided on the threaded sleeve 51, and one end of the retainer 133 extends into the interior of the triangular groove 134.

[0109] Specifically, the spring pin 132 can drive the sleeve 133 to engage inside the triangular groove 134 to limit the threaded sleeve 51, preventing the threaded sleeve 51 from easily rotating and loosening due to vibration, thus improving the stability of the threaded sleeve 51. When disassembling, simply pull the insert rod of the spring pin 132 upwards, and the insert rod will drive the sleeve 133 upwards to disengage from the triangular groove 134, allowing the threaded sleeve 51 to be rotated for disassembly.

[0110] like Figure 4 As shown, a detection component 14 is provided on the mixing tank 1. The detection component 14 includes a liquid level sensor 141, which is fixedly connected to the mixing tank 1. The detection end of the liquid level sensor 141 extends into the interior of the mixing tank 1. The liquid level sensor 141 is electrically connected to a controller, which is the controller in the aforementioned lubricating oil modulation system. The controller is connected to an alarm 142.

[0111] Specifically, the level sensor 141 is a capacitive level sensor, and the alarm 142 is an audible and visual alarm. The level sensor 141 monitors the lubricating oil level in the mixing tank 1 in real time. When the level is lower than the set threshold, the controller receives a signal to shut down the circulation pump 41 and trigger the alarm 142. The alarm 142 reminds the operator and keeps the mixing motor running to prevent the circulation pump 41 from being damaged due to dry running.

[0112] Working principle and usage process of this invention:

[0113] When in use, lubricating oil and additives are injected into the mixing tank. After the control system is started, the controller first collects operating parameters such as motor current, liquid level, circulating pump outlet pressure and flow rate. Based on the preset operating condition-parameter mapping relationship, the controller identifies the current operating condition. If there is no abnormal operating condition, the controller starts in normal mode.

[0114] Motor 2 drives stirring rod 3 to rotate and stir the oil and additives in stirring tank 1. Circulation pump 41 draws lubricating oil from stirring tank 1 through square sleeve 42 and suction sleeve 43. During the drawing process, stirring rod 3 drives toothed ring 2 444 and toothed ring 1 443 to rotate, so that sliding rod 445 slides in sliding sleeve 446, driving suction sleeve 43 to move back and forth, realizing dynamic absorption of lubricating oil in different areas of stirring tank 1 and improving circulation uniformity.

[0115] After being filtered by the filter cartridge 53, the extracted lubricating oil enters the sleeve 46 through the metal tube 45, then flows to the guide sleeves 47 on both sides, and then enters the spray cylinder 410 inside the guide cylinder 49. The spray cylinder 410 sprays out the oil. At this time, the stirring rod 3 drives the commutator 481 to rotate through the sleeve 46 and the guide sleeve 47. Since the pinion 482 meshes with the toothed ring 483 and the toothed ring 483 is fixed, the pinion 482 drives the reciprocating screw 484 to rotate through the commutator 481. The reciprocating screw 484 pushes the spray cylinder 410 to rotate through the rotating plate 485 and the opening 486 to achieve rotational oil spraying.

[0116] When the reciprocating screw 484 rotates, it drives the sleeve 4871 to move up and down reciprocally. The sleeve 4871 drives the rotating spray cylinder 410 to move up and down reciprocally through the L-shaped plate 4872 and the annular groove 4873, so as to spray the oil to different depths, further expand the mixing range, and thus achieve the advantage of good mixing effect.

[0117] During operation, the controller monitors operating parameters in real time. If a high-resistance condition is identified, the controller increases the motor speed through the frequency converter and reduces the flow angle of the filter screen 58 to reduce filtration resistance and enhance mixing intensity. If a flow channel blockage condition is identified, the controller controls the circulating pump 41 to generate short-term pulse flow changes to clear the blockage using pressure fluctuations. If a low liquid level condition is identified, the controller stops the circulating pump 41 and blocks the filter channel, while keeping the motor 2 running to prevent dry pumping and additive sedimentation, and triggers the alarm 142 to remind the operator to replenish the oil.

[0118] When the mixing progress parameter reaches the preset threshold, the controller determines that the mixing is complete, automatically stops the motor 2 and the circulation pump 41, and rotates the filter screen 58 to the completely blocked position to complete the lubricating oil modulation process.

[0119] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0120] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lubricating oil modulation control system based on industrial control software for process control, characterized in that, include: The controller, which runs industrial control software, performs the following steps: It stores a pre-built working condition-parameter mapping relationship based on historical operating data; Obtain the operating status parameters of the stirring power source and the working condition parameters of the circulation loop; The current operating condition is identified based on the acquired parameters, and the operating condition includes at least high resistance, low liquid level, and flow channel blockage. The identified current operating condition is input into the operating condition-parameter mapping relationship to obtain the corresponding optimization adjustment parameters; An adaptive adjustment strategy is executed based on the optimized adjustment parameters. The adaptive adjustment strategy includes at least one of the following: adjusting the output speed of the stirring power source, adjusting the flow capacity of the filtration path, and adjusting the output flow rate of the fluid delivery source. Under normal operating conditions, the mixing endpoint is determined based on the mixing progress parameters, and the mixing power source and fluid delivery source are stopped when the endpoint is reached.

2. A lubricating oil modulation and stirring tank based on industrial control software for process control, comprising a stirring tank (1) and a lubricating oil modulation and control system based on industrial control software as described in claim 1, characterized in that, The stirring power source is a motor (2) fixedly connected to the stirring tank (1); The output end of the motor (2) extends into the interior of the mixing tank (1) and is fixedly connected to a stirring rod (3), and also includes: The circulating return component (4) is installed on the mixing tank (1) and is used to circulate and pump the lubricating oil inside the mixing tank (1). The circulating return component (4) includes a fluid delivery source, which is a circulating pump (41) fixedly connected to the stirring tank (1) by a bracket. A square sleeve (42) is fixedly connected inside the stirring tank (1). The liquid inlet end of the circulating pump (41) is connected to the top of the square sleeve (42). A liquid suction sleeve (43) is slidably connected inside the square sleeve (42). A position adjustment component (44) is fixedly connected to the liquid suction sleeve (43). The discharge end of the circulating pump (41) is connected to a metal pipe (45). A circular sleeve (46) is fixedly connected to the stirring rod (3). One end of the metal pipe (45) extends into the inside of the circular sleeve (46). A symmetrically arranged guide sleeve (47) is connected to the circular sleeve (46). A rotary drive component (48) is provided at the top of the guide sleeve (47). A guide cylinder (49) is connected to the bottom of the guide sleeve (47). A spray cylinder (410) is provided inside the guide cylinder (49). The circulating pump (41), square sleeve (42), suction sleeve (43), metal pipe (45), round sleeve (46), guide sleeve (47), guide cylinder (49) and spray cylinder (410) are interconnected to form a circulation loop; The anti-backflow filter element (5) is located inside the square sleeve (42), and its internal channels form a filter path for filtering impurities in the lubricating oil.

3. The lubricating oil mixing tank according to claim 2, characterized in that: The position adjustment component (44) includes a triangular plate (441), which is fixedly connected to the inside of the mixing tank (1). A rotating rod (442) is fixedly connected to the inside of the triangular plate (441) via a bearing. A toothed ring (443) is fixedly connected to the rotating rod (442) via a connecting plate. A toothed ring (444) that meshes with the toothed ring (443) is fixedly connected to the stirring rod (3) via a connecting plate. A sliding rod (445) is fixedly connected to the bottom of the toothed ring (443). A sliding sleeve (446) is fixedly connected to the top of the liquid suction sleeve (43). The sliding rod (445) is slidably connected inside the sliding sleeve (446). As the gear ring (443) rotates, it drives the slide rod (445) to move the slide sleeve (446) and the liquid suction sleeve (43) back and forth along the direction of approaching / moving away from the square sleeve (42), thereby sucking up the lubricating oil in different positions inside the mixing tank (1).

4. The lubricating oil mixing tank according to claim 2, characterized in that: The rotary drive component (48) includes a commutator (481), which is fixedly connected to the flow guide sleeve (47). The input end of the commutator (481) is fixedly connected to a pinion (482) via a positioning rod. A face gear ring (483) that meshes with the pinion (482) is fixedly connected to the top of the inner wall of the mixing tank (1). The output end of the commutator (481) passes through the flow guide sleeve (47) and is fixedly connected to a reciprocating screw (484). A rotating plate (485) is fixedly connected to the bottom of the reciprocating screw (484). The spray cylinder (410) has symmetrically arranged openings (486) that are slidably connected to the rotating plate (485). A depth adjustment component (487) is provided on the reciprocating screw (484). A protective sleeve (6) is fixedly connected to the flow guide sleeve (47). The protective sleeve (6) is fitted on the outside of the positioning rod and the commutator (481). A concave plate (7) is fitted on the stirring rod (3). The bottom of the concave plate (7) is fixedly connected to the inside of the stirring tank (1).

5. The lubricating oil mixing tank according to claim 4, characterized in that: The depth adjustment component (487) includes a sleeve (4871), which is movably connected to the reciprocating screw (484) via a connecting rod and a connecting sleeve. The bottom of the sleeve (4871) is fixedly connected to a symmetrically arranged L-shaped plate (4872). The inside of the spray cylinder (410) is provided with an annular groove (4873) that is slidably connected to the L-shaped plate (4872). The inside of the guide cylinder (49) is provided with a symmetrically arranged sliding groove (4874). Both ends of the sleeve (4871) are slidably connected to the inside of the sliding groove (4874).

6. The lubricating oil mixing tank according to claim 2, characterized in that: A sealing ring (8) is fixedly connected to the top of the inner wall of the mixing tank (1). The surface of the sealing ring (8) is in contact with the inner wall of the round sleeve (46). A symmetrically arranged limiting sleeve (9) is fixedly connected to the stirring rod (3). The inner wall of the limiting sleeve (9) is in contact with the surface of the spray cylinder (410).

7. The lubricating oil mixing tank according to claim 2, characterized in that: The anti-backflow filter element (5) includes a threaded sleeve (51), which is threadedly connected to the inside of the square sleeve (42). A trapezoidal disk (52) is slidably connected inside the threaded sleeve (51). A filter cylinder (53) is fixedly installed on the trapezoidal disk (52) by bolts. A baffle (54) is fitted on the filter cylinder (53), and the baffle (54) is fixedly connected to the inside of the square sleeve (42). A fixed sleeve (55) is fixedly connected to the filter screen (58), and a micro motor (56) is fixedly connected inside the fixed sleeve (55). A valve stem (57) is fixedly connected to the output end of the micro motor (56). One end of the valve stem (57) extends into the interior of the filter cylinder (53), and a filter screen (58) is fixedly connected to the valve stem (57).

8. The lubricating oil mixing tank according to claim 7, characterized in that: A magnetic suction rod (10) located inside the filter cylinder (53) is fixedly connected to the trapezoidal disk (52). An anti-rotation block (11) is fixedly connected to the bottom of the filter cylinder (53). An anti-rotation groove (12) is opened at the bottom of the inner wall of the square sleeve (42). The anti-rotation block (11) is slidably connected inside the anti-rotation groove (12).

9. The lubricating oil mixing tank according to claim 7, characterized in that: The square sleeve (42) is provided with an anti-loosening component (13), which includes a support plate (131). The support plate (131) is fixedly connected to the square sleeve (42). A spring pin (132) is fixedly connected to the support plate (131). One end of the spring pin (132) is fixedly connected to a ferrule (133) sleeved on the support plate (131). A triangular groove (134) is provided on the threaded sleeve (51), and one end of the ferrule (133) extends into the interior of the triangular groove (134).

10. The lubricating oil mixing tank according to claim 2, characterized in that: The mixing tank (1) is provided with a detection component (14), which includes a liquid level sensor (141). The liquid level sensor (141) is fixedly connected to the mixing tank (1), and the detection end of the liquid level sensor (141) extends into the interior of the mixing tank (1). The liquid level sensor (141) is electrically connected to the controller, and the controller is connected to the alarm (142).

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