Pump body self-lubricating mechanism and method thereof

Abstract

The invention is suitable for the technical field of pump bodies, and provides a pump body self-lubricating mechanism and a method thereof. A seat body is mounted on a main shaft of the pump body through a bearing; the oil storage box is positioned at the bottom of the seat body, and an inner cavity is divided into a filter tank and an oil purification tank by a partition plate; the oil purifying groove is communicated with an oil spraying pipe through a micro pump, six oil spraying holes are formed in the circumferential direction of the base body at equal intervals, and Venturi nozzles are arranged in the oil spraying holes and communicated with the oil spraying pipe; clean oil is ensured to be uniformly and efficiently conveyed to the seat body, a stable micron-sized oil film is formed, friction and abrasion of the bearing are remarkably reduced, meanwhile, the spiral groove is intelligently adjusted through the shape memory alloy so as to meet the lubrication requirements at different temperatures, and therefore the operation efficiency of the bearing is improved, and the service life of the bearing is prolonged; in addition, fine filtering and effective recycling of the oil are achieved, impurity accumulation is avoided, the cleanliness of the oil is kept, and a solid guarantee is provided for efficient operation of the pump body.

Description

Technical Field

[0001] The present invention belongs to the technical field of pump bodies, and in particular relates to a self-lubricating mechanism for a pump body and a method thereof. Background Art

[0002] In the modern industrial field, as the core equipment for fluid transmission, the performance stability and durability of the pump body are directly related to the operating efficiency and product quality of the entire production line. However, the traditional lubrication methods for pump bodies often have many deficiencies, such as uneven oil distribution, poor lubrication effect, serious oil pollution, and poor oil management. These problems not only lead to increased bearing wear and frequent equipment failures, but also increase the maintenance costs and production risks of enterprises.

[0003] Specifically, the traditional oil injection holes adopt a fixed structure, and the lubricating oil is sprayed in the form of large liquid particles, making it difficult to form a uniform oil film, resulting in insufficient lubrication in some areas of the bearing, thereby increasing local overheating and abnormal wear.

[0004] In addition, the traditional seat body adopts a fixed flow channel design. When the temperature changes, the fluidity and heat dissipation ability of the oil film decrease significantly, and it cannot automatically adjust the flow path and lubrication effect of the oil according to the temperature change of the seat body, resulting in a significant reduction in the lubrication performance of the pump body under extreme working conditions.

[0005] On the other hand, there are also many drawbacks in the traditional oil management methods. For example, waste oil is often directly discharged or discarded, which not only causes waste of resources but also may pollute the environment. At the same time, impurities and pollutants are likely to accumulate in the oil during the recycling process. If not treated, it will cause serious corrosion and wear to the internal components of the pump body, thereby affecting the normal operation of the equipment. Summary of the Invention

[0006] The present invention provides a self-lubricating mechanism for a pump body, aiming to solve the problems that the existing lubrication methods for pump bodies often have many deficiencies, such as uneven oil distribution, poor lubrication effect, serious oil pollution, and poor oil management.

[0007] The present invention is implemented as follows. A self-lubricating mechanism for a pump body includes a pump body;

[0008] The main shaft of the pump body is installed with a seat body through a bearing;

[0009] An oil storage box is located at the bottom of the seat body, and its inner cavity is divided into a filter tank and a clean oil tank by a partition plate;

[0010] The clean oil tank is connected to an oil spray pipe through a micro pump, and 6 oil injection holes are equidistantly arranged in the circumferential direction of the seat body. A Venturi nozzle is arranged in the oil injection hole, and the Venturi nozzle is connected to the oil spray pipe;

[0011] An oil waste recovery hole is provided at the bottom side of the seat body. The oil waste recovery hole is communicated with a filter tank. There is a spiral diversion groove at the upper part of the filter tank.

[0012] A primary filter screen is horizontally arranged in the middle of the filter tank. The aperture of the primary filter screen is 100 - 200 μm.

[0013] The primary filter screen is inclinedly distributed, and a magnetic adsorption slag collection box is communicated with the side with a lower inclination gradient.

[0014] A partition plate is provided with a through - slot at the lower end of the intercepting filter screen. A secondary filter screen is vertically arranged in the through - slot. A graphene coating is coated on the secondary filter screen. The aperture of the secondary filter screen is 50 - 100 μm.

[0015] Oil waste recovery module: The bottom of the oil storage box is communicated with a conical diversion cover. The inclination angle of the diversion cover is 40° - 60°. The diversion cover is connected to an oil pump. The outlet of the oil pump is connected to an external oil waste collection box.

[0016] Intelligent monitoring unit: An optical fiber grating sensor and a turbidity sensor are arranged in the purified oil tank. A piezoelectric ceramic micro - valve is integrated in the Venturi nozzle. The piezoelectric ceramic micro - valve is connected to the optical fiber grating sensor through a CAN bus signal.

[0017] Preferably, an annular spiral groove is provided on the inner wall of the seat body. The depth of the spiral groove is 0.3 - 0.8 mm.

[0018] Preferably, a shape - memory alloy temperature compensation sheet is embedded in the spiral groove. The phase - change temperature of the shape - memory alloy temperature compensation sheet is 40°C ± 2°C.

[0019] Preferably, the primary filter screen adopts a titanium alloy honeycomb structure. Its wall thickness is 0.5 - 1 mm, and a diamond - like carbon film with a thickness of 2 - 5 μm is coated on the surface.

[0020] Preferably, an ultrasonic oscillator and a vibration amplitude sensor are arranged at the upper part of the secondary filter screen. The ultrasonic oscillator and the vibration amplitude sensor are connected through a CAN bus signal.

[0021] Preferably, the inner wall of the oil storage box is coated with an oil - repellent coating, and the thickness of the oil - repellent coating is ≤ 5 nm.

[0022] Preferably, a fuel supply pipeline communicated with the oil storage box is provided on the side wall of the oil storage box. An electromagnetic fuel supply valve is integrated on the fuel supply pipeline. A liquid - level float switch is arranged in the oil storage box. The liquid - level float switch is connected to the fuel supply valve through a CAN bus signal.

[0023] Preferably, a slag material treatment channel is provided on the magnetic adsorption slag collection box. The slag material treatment channel is a trapezoidal structure with a wider upper part and a narrower lower part in cross - section. A sealing cover is hinged and matched on the slag material treatment channel.

[0024] The present invention also provides a lubrication method for a self-lubricating mechanism of a pump body, including the following lubrication steps:

[0025] Step 1: Oil atomization and uniform transportation:

[0026] 1. The clean oil is pumped from the oil storage box by a micro pump and uniformly transported through the spray oil pipe to the spray holes around the seat body;

[0027] 2. The Venturi nozzle installed in the spray hole atomizes the oil into micron-sized particles, thereby forming a uniform oil film on the bearing surface, effectively reducing the friction and wear of the bearing;

[0028] Step 2: Optimization of the oil flow path and heat dissipation:

[0029] 1. The ejected oil is guided to flow along the spiral groove, enhancing the uniformity and stability of the oil film;

[0030] 2. When the temperature of the seat body reaches the set range, the shape memory alloy undergoes a phase change, adjusting the shape and depth of the spiral groove, optimizing the oil flow path, and promoting the effective dissipation of heat; when the temperature rises, the alloy expands to increase the groove volume, promoting the flow of oil; when the temperature drops, the alloy contracts to reduce the groove volume, maintaining an appropriate oil film thickness;

[0031] Step 3: Oil filtration and impurity treatment:

[0032] 1. The deteriorated waste oil and impurities flow into the filter tank of the oil storage box through the waste oil recovery hole at the bottom of the seat body;

[0033] 2. The primary filter screen and the secondary filter screen in the filter tank intercept impurity particles of different sizes respectively, and the magnetic adsorption slag box uses magnetic materials to adsorb the impurity particles falling from the filter screen, preventing impurities from accumulating in the pump body;

[0034] Step 4: Automatic oil replenishment and quality monitoring:

[0035] 1. When the liquid level drops to the preset lowest threshold, the liquid level float switch sends a signal to trigger the opening of the oil supply valve, automatically replenishing the oil to the oil storage box;

[0036] 2. The fiber Bragg grating sensor and the turbidity sensor in the clean oil tank continuously monitor the temperature, vibration and cleanliness of the oil, ensuring that the oil quality meets the usage requirements, providing a solid guarantee for the stable operation of the pump body.

[0037] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0038] First: The cleaning oil of the present invention is evenly transported to the oil injection holes around the seat body. The Venturi nozzle is used to atomize the oil into micron-sized particles to form a uniform oil film, effectively reducing the friction and wear of the bearing. The ejected oil is guided to flow along the spiral grooves, enhancing the uniformity and stability of the oil film, and at the same time promoting the effective dissipation of heat. The application of the shape memory alloy can adjust the shape and depth of the spiral grooves according to the change of the seat body temperature, optimize the oil flow path, and ensure good lubrication effect and heat dissipation performance at different temperatures, thereby improving the operating efficiency and service life of the bearing.

[0039] Second: The present invention realizes the effective recovery and reuse of excess waste oil. After being filtered by multiple-stage filters, it can effectively intercept and separate impurity particles of different sizes, thereby realizing the fine filtration of the oil. In addition, the magnetic adsorption slag box uses magnetic materials to adsorb the impurity particles dropped by the filter screen, avoiding the accumulation of impurities in the pump body and further maintaining the cleanliness of the oil.

[0040] Third: The present invention realizes the automatic replenishment and liquid level monitoring of the oil in the oil storage box. When the oil liquid level drops to the preset minimum threshold, the oil supply valve can be quickly and automatically opened, ensuring that there is always sufficient oil supply in the oil storage box, providing a solid guarantee for the continuous and efficient operation of the pump body.

[0041] Fourth: By integrating a variety of sensors, the present invention can monitor the temperature change, vibration condition, and cleanliness of the oil in real time and accurately. The accurate data not only provides intuitive monitoring of the oil quality for the operator, effectively reducing the risk of equipment failure caused by oil quality problems, but also ensures the stable operation and long-term reliability of the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0043] Figure 2 is a three-dimensional structural schematic diagram of the present invention;

[0044] Figure 3 is a three-dimensional structural schematic diagram of the present invention;

[0045] Figure 4 is a front sectional structural schematic diagram of the present invention;

[0046] Figure 5 is a front view of the present invention;

[0047] Figure 6 is a left view of the present invention;

[0048] Figure 7 is a right view of the present invention;

[0049] Figure 8 is the enlarged structural schematic diagram of part A of the present invention Figure 4 ;

[0050] Figure 9 is the enlarged structural schematic diagram of part B of the present invention Figure 4 ;

[0051] In the figure: 1, pump body; 2, seat body; 3, oil storage box; 4, partition board; 5, filtering tank; 6, clean oil tank; 7, micro pump; 8, fuel injection pipe; 9, fuel injection hole; 10, Venturi nozzle; 11, waste oil recovery hole; 12, spiral diversion groove; 13, primary filter screen; 14, magnetic slag collection box; 15, secondary filter screen; 16, main shaft; 17, conical diversion cover; 18, oil pump; 19, waste oil collection box; 20, sealing cover; 21, fiber Bragg grating sensor; 22, turbidity sensor; 23, piezoelectric ceramic micro valve; 24, spiral groove; 25, shape memory alloy temperature compensation sheet; 26, ultrasonic oscillator; 27, vibration amplitude sensor; 28, slag treatment channel; 29, oil supply pipeline; 30, electromagnetic oil supply valve; 31, liquid level float switch. Specific embodiments

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0053] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0054] An embodiment of the present invention provides a self-lubricating mechanism for a pump body, as Figures 1-9 shown, including a pump body 1;

[0055] The main shaft 16 of the pump body 1 is installed with a seat body 2 through a bearing;

[0056] An oil storage box 3, located at the bottom of the seat body 2, the inner cavity of which is divided into a filtering tank 5 and a clean oil tank 6 by a partition board 4;

[0057] The refined oil tank 6 is connected to an oil injection pipe 8 through a micro pump 7, and six oil injection holes 9 are circumferentially and equidistantly arranged on the seat body 2. A Venturi nozzle 10 is arranged in the oil injection hole 9, and the Venturi nozzle 10 is connected to the oil injection pipe 8;

[0058] A waste oil recovery hole 11 is arranged on the bottom side of the seat body 2, and the waste oil recovery hole 11 is connected to the filter tank 5. There is a spiral diversion groove 12 at the upper part of the filter tank 5;

[0059] A primary filter screen 13 is horizontally arranged in the middle of the filter tank 5, and the aperture of the primary filter screen 13 is 100 - 200μm;

[0060] The primary filter screen 13 is inclinedly distributed, and a magnetic adsorption slag collection box 14 is connected to the side with a lower inclination gradient;

[0061] A partition plate 4 is provided with a through groove at the lower end of the intercepting filter screen. A secondary filter screen 15 is vertically arranged in the through groove. A graphene coating is applied on the secondary filter screen 15, and the aperture of the secondary filter screen 15 is 50 - 100μm;

[0062] Waste oil recovery module 16: The bottom of the oil storage box 3 is connected to a conical diversion cover 17. The inclination angle of the diversion cover is 40° - 60°. The diversion cover is connected to a suction pump 18, and the outlet of the suction pump 18 is connected to an external waste oil collection box 19;

[0063] Intelligent monitoring unit: An optical fiber grating sensor 21 and a turbidity sensor 22 are arranged in the refined oil tank 6; A piezoelectric ceramic micro valve 23 is integrated in the Venturi nozzle 10, and the piezoelectric ceramic micro valve 23 is signal - connected to the optical fiber grating sensor 21 through a CAN bus.

[0064] It should be noted that due to the existing lubrication methods of the pump body 1 often having many deficiencies, such as uneven oil distribution, poor lubrication effect, serious oil pollution, and poor oil management problems, this solution realizes the comprehensive optimization and intelligent management of bearing lubrication; The clean oil is evenly transported to the seat body 2 and atomized through the Venturi nozzle 10 to form a uniform oil film, effectively reducing bearing friction and wear. At the same time, the oil flows along the spiral groove 24, enhancing the uniformity and stability of the oil film and promoting heat dissipation; The application of shape memory alloy enables the spiral groove 24 to automatically adjust with temperature changes, ensuring good lubrication and heat dissipation effects at different temperatures, significantly improving the bearing operation efficiency and service life; In addition, the present invention also realizes the effective recovery and reuse of excess waste oil. Through fine filtration by a multi - stage filter screen and adsorption of impurities by the magnetic adsorption slag collection box 14, the cleanliness of the oil is maintained; At the same time, the automatic oil replenishment and liquid level monitoring functions in the oil storage box 3 ensure sufficient oil supply, providing guarantee for the continuous and efficient operation of the pump body 1; Integrating a variety of sensors to monitor the oil state in real - time provides intuitive oil quality monitoring for operators, effectively reducing the risk of equipment failure and ensuring the stable operation and long - term reliability of the pump body 1.

[0065] Specifically, in this embodiment, the present solution mainly includes a pump body 1; when the pump body 1 is working, its output shaft is fixedly connected to the seat body 2 to ensure stable rotation; in order to achieve stable lubrication of the seat body 2, an oil storage box 3 is installed at the bottom of the seat body 2; the interior of the oil storage box 3 is divided into a filter tank 5 and a clean oil tank 6 by a partition plate 4;

[0066] The clean oil tank 6 is used to store the filtered clean oil; these clean oils are transported by a micro pump 7 through a spray oil pipe 8 to 6 spray holes 9 evenly distributed circumferentially on the seat body 2; a Venturi nozzle 10 is installed in the spray hole 9, and the Venturi nozzle 10 can atomize the lubricating oil into micron-sized particles, thereby forming a uniform oil film on the bearing surface;

[0067] The piezoelectric ceramic micro valve 23 communicates with the fiber Bragg grating sensor 21 in real time through the CAN bus, dynamically adjusts the oil injection volume according to the temperature of the bearing, and ensures that the temperature fluctuation of the seat body 2 is controlled within ±2°C;

[0068] As the pump body 1 continues to operate, part of the lubricating oil will become waste oil due to friction and wear; these waste oils flow into the filter tank 5 through the waste oil recovery hole 11 on the bottom side of the seat body 2; a spiral diversion groove 12 is designed at the upper part of the filter tank 5, which helps the preliminary diversion and dispersion of the waste oil; in the middle of the filter tank 5, a primary filter screen 13 is horizontally arranged, and its aperture is between 100 - 200 μm, which can effectively intercept larger impurity particles; the primary filter screen 13 is inclinedly distributed, and a magnetic absorption slag collection box 14 is connected to the side with a lower inclination gradient of the inclined slope. This inclined design makes the oil liquid containing impurities flow towards the magnetic absorption slag collection box 14 to further collect magnetic impurities such as iron;

[0069] After the preliminary filtration by the primary filter screen 13, the waste oil continues to flow downward; in the through groove at the lower end of the partition plate 4, a secondary filter screen 15 is vertically arranged, and its aperture is between 50 - 100 μm, which further refines the filtration accuracy and ensures the removal of finer impurities in the waste oil; at the same time, the secondary filter screen 15 is made of graphene material, and its hydrophobicity and high conductivity are used to achieve self-cleaning and anti-blocking;

[0070] A fiber Bragg grating sensor 21 is installed in the clean oil tank 6 to real-time monitor the temperature and vibration signals of the oil liquid, and at the same time, a turbidity sensor 22 is used to detect the cleanliness of the oil liquid;

[0071] In order to handle the waste oil accumulated at the bottom of the oil storage box 3, a waste oil recovery module 16 is designed; a conical diversion cover 17 is connected to the bottom of the oil storage box 3, and its inclination angle is between 40° - 60°, which helps the smooth diversion of the waste oil; the diversion cover is connected to a suction oil pump 18, and the suction oil pump 18 pumps out the waste oil and transports it to an external waste oil collection box 19, realizing the effective recovery and treatment of the waste oil.

[0072] In a further preferred embodiment of the present invention, such asFigure 8 As shown, an annular spiral groove 24 is provided on the inner wall of the seat body 2, and the depth of the spiral groove 24 is 0.3 - 0.8 mm.

[0073] In this embodiment, the oil fluid is guided to flow along the spiral groove 24. This design not only enhances the uniformity and stability of the oil film but also promotes the effective dissipation of heat.

[0074] In a further preferred embodiment of the present invention, as Figures 5-8 shown, a shape memory alloy temperature compensation sheet 25 is embedded in the spiral groove 24, and the phase change temperature of the shape memory alloy temperature compensation sheet 25 is 40°C ± 2°C.

[0075] In this embodiment, the phase change temperature of the shape memory alloy temperature compensation sheet 25 is set to 40°C ± 2°C. This means that when the temperature of the seat body 2 approaches or reaches this range, the shape memory alloy temperature compensation sheet 25 will undergo a phase change, thereby generating a small deformation. This deformation is utilized to adjust the shape and depth of the spiral groove 24, and further optimize the flow path and distribution of the oil fluid. When the temperature rises, the expansion of the shape memory alloy temperature compensation sheet 25 helps to increase the volume of the spiral groove 24, promoting more oil fluid flow and enhancing the heat dissipation effect; while when the temperature drops, the contraction of the shape memory alloy temperature compensation sheet 25 reduces the groove volume, helping to maintain an appropriate oil film thickness and ensuring that the lubrication effect is not affected by temperature fluctuations.

[0076] In a further preferred embodiment of the present invention, as Figures 1-5 shown, the primary filter screen 13 adopts a titanium alloy honeycomb structure, its wall thickness is 0.5 - 1 mm, and a diamond - like carbon film is coated on its surface, with a thickness of 2 - 5 μm.

[0077] In this embodiment, the primary filter screen 13 adopts a titanium alloy honeycomb structure. This structure not only has the advantages of high strength and corrosion resistance but also provides a larger filtration area and better fluid pass - through performance through its unique honeycomb design. The wall thickness of the primary filter screen 13 is precisely controlled between 0.5 - 1 mm, ensuring sufficient structural strength while reducing fluid resistance. To further enhance the wear resistance and corrosion resistance of the primary filter screen 13, a layer of diamond - like carbon film is coated on its surface. The thickness of this film is between 2 - 5 μm. It combines the hardness and chemical inertness of diamond, enabling the primary filter screen 13 to more effectively intercept impurity particles and resist corrosive substances that may exist in the oil fluid.

[0078] In a further preferred embodiment of the present invention, as Figures 1-5 shown, an ultrasonic oscillator 26 and a vibration amplitude sensor 27 are provided at the upper position of the secondary filter screen 15, and the ultrasonic oscillator 26 and the vibration amplitude sensor 27 are connected by CAN bus signals.

[0079] In this embodiment, the ultrasonic oscillator 26 generates high-frequency vibration waves to wash and disperse the fine impurities attached to the surface of the filter screen, effectively preventing the filter screen from being blocked. The vibration amplitude sensor 27 monitors the vibration state of the ultrasonic oscillator 26 in real time to ensure its stable operation within the set range. The ultrasonic oscillator 26 and the vibration amplitude sensor 27 are signal-connected through the CAN bus to achieve real-time data transmission and intelligent control.

[0080] In a further preferred embodiment of the present invention, as Figure 5 shown, the inner wall of the oil storage box 3 is coated with an oil-repellent coating, and the thickness of the oil-repellent coating is ≤ 5 nm.

[0081] In this embodiment, the oil-repellent coating utilizes the characteristic of extremely low surface energy, making it difficult for the oil liquid to adhere when contacting the inner wall of the oil storage box 3, thereby reducing the residue and waste of the oil liquid, and also helping to keep the inside of the oil storage box 3 clean.

[0082] In a further preferred embodiment of the present invention, as Figure 5 shown, the side wall of the oil storage box 3 is provided with an oil supply pipeline 29 connected thereto. The oil supply pipeline 29 is integrated with an electromagnetic oil supply valve 30. A liquid level float switch 31 is arranged in the oil storage box 3, and the liquid level float switch 31 and the oil supply valve are signal-connected through the CAN bus.

[0083] In this embodiment, the liquid level change of the oil liquid is detected by the up and down floating of the float ball. When the liquid level drops to the preset lowest threshold, the liquid level float switch 31 sends a signal to the electromagnetic oil supply valve 30 to trigger the opening of the electromagnetic oil supply valve 30, allowing the oil liquid to flow into the oil storage box 3 from the oil supply pipeline 29. Similarly, if the liquid level rises abnormally beyond the highest threshold, the liquid level float switch 31 also sends a signal to the electromagnetic oil supply valve 30 to close it and stop the oil supply.

[0084] In a further preferred embodiment of the present invention, as Figure 9 shown, a slag handling channel 28 is provided on the magnetic slag collection box 14. The slag handling channel 28 is a trapezoidal structure with a wider upper section and a narrower lower section in cross-section, and a sealing cover 20 is hingedly fitted on the slag handling channel 28.

[0085] In this embodiment, the slag handling channel 28 not only facilitates the collection of impurity particles, but also is fitted with a sealing cover 20 to ensure that the channel remains sealed when the impurities are not being processed, preventing oil leakage and the re-entry of impurities into the pump body 1.

[0086] Working principle: When the pump body 1 of the present invention is working, in order to maintain the efficient and long-term operation of the bearing, the cleaning oil is extracted from the oil storage box 3 by the micro pump 7 and evenly delivered to the oil injection holes 9 around the seat body 2 through the oil injection pipe 8; these oil injection holes 9 are internally provided with Venturi nozzles 10 to atomize the oil into micron-sized particles, thereby forming a uniform oil film on the bearing surface, effectively reducing friction and wear. The ejected oil is guided to flow along the spiral groove 24. This design not only enhances the uniformity and stability of the oil film but also promotes the effective dissipation of heat;

[0087] Meanwhile, when the temperature of the seat body 2 approaches or reaches the set range, the shape memory alloy temperature compensation piece 25 will undergo a phase change, thereby generating a small deformation. This deformation is utilized to adjust the shape and depth of the spiral groove 24, and further optimize the flow path and distribution of the oil. When the temperature rises, the expansion of the shape memory alloy temperature compensation piece 25 helps to increase the volume of the spiral groove 24, promote more oil flow, and enhance the heat dissipation effect; while when the temperature drops, the contraction of the shape memory alloy temperature compensation piece 25 reduces the groove volume, helping to maintain an appropriate oil film thickness and ensuring that the lubrication effect is not affected by temperature fluctuations;

[0088] With the continuous operation of the pump body 1, part of the lubricating oil gradually deteriorates into waste oil due to friction and wear and carries a certain amount of impurity particles; these waste oil and impurities flow into the filter tank 5 of the oil storage box 3 through the waste oil recovery hole 11 at the bottom of the seat body 2; in the filter tank 5, the primary filter screen 13 is made of a titanium alloy honeycomb structure coated with a diamond-like carbon film, effectively intercepting larger impurity particles; the secondary filter screen 15, through the cooperation of the ultrasonic oscillator 26 and the vibration amplitude sensor 27, realizes the fine filtration and self-cleaning function of fine impurities;

[0089] The oil filtered by the multi-stage filter screens continues to be recycled, while the impurity particles are intercepted on the filter screens; in order to more conveniently handle and clean these impurities, a magnetic slag collection box 14 is designed and installed at an appropriate position on the pump body 1; the magnetic slag collection box 14 uses magnetic materials to adsorb the impurity particles falling from the filter screen, preventing impurities from accumulating in the pump body 1;

[0090] A slag handling channel 28 is provided on the magnetic slag collection box 14. When the impurities in the magnetic slag collection box 14 accumulate to a certain extent, the operator can open the sealing cover 20 and discharge the impurities through the slag handling channel 28;

[0091] In addition, the liquid level float switch 31 in the oil storage box 3 is connected to the electromagnetic oil supply valve 30 through CAN bus signals to achieve automatic oil replenishment and liquid level monitoring. When the liquid level drops to the preset minimum threshold, the liquid level float switch 31 sends a signal to the electromagnetic oil supply valve 30, triggering the opening of the electromagnetic oil supply valve 30 to automatically replenish the oil into the oil storage box 3. At the same time, the fiber Bragg grating sensor 21 and the turbidity sensor 22 in the clean oil tank 6 continuously monitor the temperature, vibration, and cleanliness of the oil to ensure that the oil quality meets the usage requirements.

[0092] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0093] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above-mentioned unit division may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0094] The units described as separate components above may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0095] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions, or other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A pump body self-lubricating mechanism, characterized in that: include: Pump body; The main shaft of the pump body is mounted with a seat body through a bearing; The oil storage box is located at the bottom of the seat body, and its inner cavity is divided into a filter tank and a clean oil tank by a partition plate; The clean oil tank is connected to the oil injection pipe through a micro pump, and the seat body is provided with 6 oil injection holes equidistantly around the circumference, and a Venturi nozzle is arranged in the oil injection hole, and the Venturi nozzle is connected to the oil injection pipe; A waste oil recovery hole is arranged on the bottom side of the seat body, the waste oil recovery hole is connected with the filter tank, and a spiral guide groove is arranged on the upper part of the filter tank; A first-stage filter screen is horizontally arranged in the middle of the filter tank, and the aperture of the first-stage filter screen is 100-200μm; The first-stage filter is distributed in an inclined manner, and the side with a lower inclination is connected to a magnetic slag collection box; The partition plate is located at the lower end of the interception filter and is provided with a through slot, a secondary filter is vertically arranged in the through slot, the secondary filter is coated with a graphene coating, and the aperture of the secondary filter is 50-100 μm; Waste oil recovery module: The bottom of the oil storage box is connected to a conical guide cover, the inclination angle of the guide cover is 40°-60°, the guide cover is connected to the oil pump, and the outlet of the oil pump is connected to the external waste oil collection tank; Intelligent monitoring unit: A fiber grating sensor and a turbidity sensor are installed in the clean oil tank; a piezoelectric ceramic microvalve is integrated in the Venturi nozzle, and the piezoelectric ceramic microvalve and the fiber grating sensor are connected through a CAN bus signal.

2. A pump body self-lubricating mechanism as claimed in claim 1, characterized in that: The inner wall of the seat body is provided with an annular spiral groove, and the depth of the spiral groove is 0.3-0.8mm.

3. A pump body self-lubricating mechanism as claimed in claim 2, characterized in that: A shape memory alloy temperature compensation sheet is embedded in the spiral groove, and the phase change temperature of the shape memory alloy temperature compensation sheet is 40°C±2°C.

4. A pump body self-lubricating mechanism as claimed in claim 1, characterized in that: The primary filter adopts a titanium alloy honeycomb structure with a wall thickness of 0.5-1mm and a surface coated with a diamond-like film with a thickness of 2-5μm.

5. A pump body self-lubricating mechanism as claimed in claim 1, characterized in that: An ultrasonic oscillator and a vibration amplitude sensor are arranged at the upper portion of the secondary filter, and the ultrasonic oscillator and the vibration amplitude sensor are connected via a CAN bus signal.

6. A pump body self-lubricating mechanism as claimed in claim 1, characterized in that: The inner wall of the oil storage box is coated with an oleophobic coating, and the thickness of the oleophobic coating is ≤5nm.

7. A pump body self-lubricating mechanism as claimed in claim 6, characterized in that: The side wall of the oil storage box is provided with an oil supply pipeline connected thereto, an electromagnetic oil supply valve is integrated on the oil supply pipeline, a liquid level float switch is provided in the oil storage box, and the liquid level float switch and the oil supply valve are connected via a CAN bus signal.

8. A pump body self-lubricating mechanism as claimed in claim 1, characterized in that: A slag processing channel is arranged on the magnetic slag collecting box. The slag processing channel is a trapezoidal structure with a wide upper part and slag at the lower part. A sealing cover is hingedly connected to the slag processing channel.

9. A lubrication method for a pump body self-lubricating mechanism, characterized in that: The lubrication steps include: Step 1: Oil atomization and uniform delivery:

1. The cleaning oil is extracted from the oil storage box by a micro pump and evenly delivered to the oil injection holes around the seat body through the oil injection pipe; 2. The Venturi nozzle built into the oil injection hole atomizes the oil into micron-sized particles, thereby forming a uniform oil film on the bearing surface, effectively reducing the friction and wear of the bearing; Step 2: Optimize oil flow path and dissipate heat:

1. The sprayed oil is guided to flow along the spiral groove to enhance the uniformity and stability of the oil film; 2. When the seat body temperature reaches the set range, the shape memory alloy undergoes a phase change, adjusts the shape and depth of the spiral groove, optimizes the oil flow path, and promotes effective heat dissipation; when the temperature rises, the alloy expands to increase the groove volume and promote oil flow; when the temperature drops, the alloy contracts to reduce the groove volume and maintain an appropriate oil film thickness; Step 3: Oil filtration and impurity treatment:

1. The deteriorated waste oil and impurities flow into the filter tank of the oil storage box through the waste oil recovery hole at the bottom of the seat body; 2. The primary filter and secondary filter in the filter tank intercept impurity particles of different sizes respectively, and the magnetic slag collection box uses magnetic materials to absorb the impurity particles dropped by the filter to prevent impurities from accumulating in the pump body; Step 4: Automatic oil replenishment and quality monitoring:

1. When the liquid level drops to the preset minimum threshold, the liquid level float switch sends a signal to trigger the oil supply valve to open, automatically replenishing oil to the oil storage box; 2. The fiber grating sensor and turbidity sensor in the clean oil tank continuously monitor the temperature, vibration and cleanliness of the oil to ensure that the oil quality meets the use requirements and provide a solid guarantee for the stable operation of the pump body.

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