A high-reliability oil pump assembly

Abstract

The application provides a high-reliability engine oil pump assembly, comprising a gear pump, an injection port and a filter pipe, the filter pipe comprising a magnetic suction pipe, a magnetic guide pipe body in the magnetic suction pipe and a magnetic guide end cover forming a closed magnetic circuit, cooperating with a strong magnetic field of a magnetic suction strip and a surface grid-shaped groove, which can efficiently adsorb and fix magnetic impurities such as iron filings, a stainless steel woven filter screen in the filter cover can intercept non-magnetic impurities, greatly reducing the impurities entering the gear pump; the buckle type detachable embedding of the filter cover and the tail magnetic guide end cover, the detachable connection of the filter screen and the design of the first quick release head and the second quick release head can quickly maintain without disassembling the assembly, only need to replace the easily damaged parts such as the filter screen, greatly reducing the maintenance working hours and cost.

Description

Technical Field

[0001] This application relates to the field of oil pump assembly technology, and in particular to a highly reliable oil pump assembly. Background Technology

[0002] In the automotive engine lubrication system, the oil pump assembly is a core functional module, connecting the oil pan with various lubrication points of the engine. It not only includes the oil pump body that provides power, but also integrates pressure relief valves, sealing devices, dedicated pipelines, and fixed structures. Through the cooperation of various components, it completes the extraction, pressurization, pressure regulation, and delivery of oil to key engine components. Its operational reliability directly determines the engine lubrication efficiency and overall service life. Among the existing oil pump assemblies, the gear oil pump is the most widely used type of oil pump body. As the core power component of the assembly, it generally adopts a symmetrical structure with mutual meshing of driving gears and driven gears. The existing problems are as follows: Existing technologies typically include a single-pass filter in the oil circulation path. However, due to limitations in filtration precision and efficiency, magnetic impurities, primarily iron filings from engine component wear, as well as non-magnetic impurities such as debris from aging and detached seals and carbon deposits from fuel combustion, remain in the oil after the single pass. These residual impurities, when carried by the oil into the gear-type oil pump, exacerbate wear on the tooth surfaces of the drive and driven gears, increase gear meshing clearance, lead to decreased oil pump volumetric efficiency, fluctuating oil supply pressure, and even gear jamming, thus shortening the oil pump's lifespan. On the other hand, impurities that are not intercepted can further enter the engine's internal lubrication channels with the oil, causing grinding damage to precision components such as engine crankshaft bearings and camshafts. Utility Model Content

[0003] The purpose of this invention is to provide a highly reliable oil pump assembly to solve the above-mentioned problems.

[0004] The technical solution of this application is implemented as follows: This application provides a highly reliable oil pump assembly, including a gear pump and a filter tube, wherein the gear pump has an inlet on its outer side; The filter tube is fixedly installed at the oil inlet end of the inlet port. The filter tube includes a magnetic suction tube, which is a hollow structure. A filter cover is detachably embedded at the tail end of the magnetic suction tube. A filter screen is provided inside the filter cover. A first quick-release head is fixedly installed at the tail end of the filter cover. The first quick-release head is detachably and fixedly connected to the oil inlet end of the inlet port. A second quick-release head is fixedly installed at the front end of the magnetic suction tube.

[0005] In one embodiment, the magnetic tube includes a magnetic tube body, which is a hollow structure. Magnetic end caps are fixedly provided at both the front and rear ends of the magnetic tube body. A second quick-release head is fixedly installed at the front end of the magnetic end cap, and a filter cap is detachably embedded at the rear end of the magnetic end cap. A plurality of mounting grooves are arrayed on the inner wall of the magnetic tube body, and magnetic strips are fixedly embedded in the mounting grooves.

[0006] In one embodiment, the magnetic strip has a grid-like groove on the side away from the mounting groove.

[0007] In one embodiment, the filter screen and the filter cover are detachably and fixedly connected. An annular groove is provided on the inner wall of the filter cover corresponding to the edge of the filter screen. The edge of the filter screen is embedded in the annular groove, and an oil-resistant sealing gasket is provided between the filter screen and the annular groove.

[0008] In one embodiment, the magnetic end cap has an oil flow channel at its center that communicates with the hollow structure inside the magnetic tube.

[0009] In one embodiment, the magnetic tube body is made of nickel-plated soft iron.

[0010] In one embodiment, the filter screen is a stainless steel woven mesh with a filtration accuracy of 80-120 mesh, and the diameter of the filter screen is adapted to the inner diameter of the filter cover.

[0011] The advantages or beneficial effects of the above technical solutions include at least the following: This application discloses a highly reliable oil pump assembly, including a magnetic suction tube. The magnetic tube body and the magnetic end cap inside the magnetic suction tube form a closed magnetic circuit. With the strong magnetic field of the magnetic strip and the grid-like grooves on the surface, it can efficiently adsorb and fix magnetic impurities such as iron filings. The stainless steel woven filter screen inside the filter cover can intercept non-magnetic impurities, greatly reducing the amount of impurities entering the gear pump. The snap-fit ​​detachable mounting of the filter cover and the tail magnetic end cover, the detachable connection of the filter screen, and the design of the first and second quick-release heads allow for quick maintenance without disassembling the assembly. Only vulnerable parts such as the filter screen need to be replaced, which greatly reduces maintenance time and costs. Attached Figure Description

[0012] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0013] Figure 1 A schematic diagram of the overall structure of an embodiment of this application is shown; Figure 2 A schematic diagram of the filter tube according to an embodiment of this application is shown; Figure 3 An exploded structural diagram of the filter tube according to an embodiment of this application is shown; Figure 4 A schematic diagram of the structure of the magnetic suction tube according to an embodiment of this application is shown; Figure 5 A structural schematic diagram of the mounting groove and magnetic strip according to an embodiment of this application is shown.

[0014] Reference numerals in the attached drawings: Gear pump-1, Inlet-2, Filter tube-3, Magnetic suction tube-31, Filter cover-32, Filter screen-33, First quick-release head-34, Second quick-release head-35, Magnetic tube body-311, Magnetic end cap-312, Mounting groove-313, Magnetic strip-314. Detailed Implementation

[0015] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0016] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0018] It should be noted that the terms "a" and "a number" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0019] The names of the messages or information exchanged between multiple devices in the embodiments of this application are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0020] Reference Figure 1A highly reliable oil pump assembly, comprising a gear pump 1 and a filter tube 3, wherein the gear pump 1 serves as the power core of the oil pump assembly and is used to extract, pressurize, and deliver oil. Through the meshing rotation of the internal drive gear and driven gear, the periodic change in the inter-gear volume is utilized to draw the oil purified by the filter tube 3 into the pump body, pressurize it, and deliver it to key moving parts such as the engine crankshaft, bearings, and valves, providing continuous lubrication for these parts.

[0021] The gear pump 1 is provided with an inlet 2 on the outside, which is used to stably introduce the clean oil purified by the filter tube 3 into the gear pump 1.

[0022] In one embodiment, reference is made to Figures 2-3 The filter tube 3 is fixedly installed at the oil inlet end of the inlet port 2. The filter tube 3 includes a magnetic suction tube 31, which is a hollow structure. The hollow structure is the channel for oil flow. Through the internally embedded magnetic suction component, the magnetic suction tube 31 can adsorb ferromagnetic impurities in the oil and prevent iron filings from entering the subsequent oil circuit along with the oil.

[0023] The end of the magnetic suction tube 31 is detachably fitted with a filter cover 32. The filter cover 32 is used to provide an installation position for the filter screen 33, ensuring that the filter screen 33 does not shift or deform under the flushing of engine oil, thus ensuring the filtration effect.

[0024] The filter cover 32 is equipped with a filter screen 33, which is used to intercept non-magnetic impurities in the oil that are not adsorbed by the magnetic tube 31, such as carbon deposits generated by fuel combustion, debris from aging and falling off rubber seals, dust particles, etc., to ensure comprehensive filtration.

[0025] The filter cover 32 is fixedly installed with a first quick-release head 34 at the tail end. The first quick-release head 34 is detachably and fixedly connected to the oil inlet end of the inlet port 2. The first quick-release head 34 ensures that the filtered clean oil can be stably introduced into the inlet port 2. At the same time, the quick-release design facilitates subsequent maintenance. It should be noted that the first quick-release head 34 is a known technology, and its specific structure will not be described in detail.

[0026] The front end of the magnetic suction tube 31 is fixedly installed with a second quick-release head 35. The second quick-release head 35 has the same structure as the first quick-release head 34 and is responsible for introducing the oil from the oil pan into the magnetic suction tube 31, which also has the functions of convenient maintenance and sealing.

[0027] The filter screen 33 and the filter cover 32 are detachably and fixedly connected. The inner wall of the filter cover 32 is provided with an annular groove corresponding to the edge of the filter screen 33. The edge of the filter screen 33 is embedded in the annular groove, and an oil-resistant sealing gasket is provided between the filter screen 33 and the annular groove. The annular groove can securely fix the filter screen 33, preventing the filter screen 33 from shifting, deforming or falling off due to impact when the oil flows in the filter tube 3. In addition, the oil-resistant sealing gasket can completely seal the gap between the filter screen 33 and the annular groove, preventing unfiltered oil from flowing into the subsequent oil circuit through the gap, and preventing impurities from bypassing the filter screen 33 and directly entering the gear pump 1, causing wear. The detachable connection design facilitates later maintenance. When the filter screen 33 becomes clogged due to the accumulation of impurities, there is no need to replace the entire filter cover 32. Only the filter screen 33 needs to be removed for cleaning or replacement, which greatly reduces maintenance costs and operational difficulty, and extends the service life of the filter cover 32.

[0028] Among them, the filter screen 33 is a stainless steel woven mesh with a filtration accuracy of 80-120 mesh. The diameter of the filter screen 33 is matched with the inner diameter of the filter cover 32. The stainless steel woven mesh material has excellent resistance to oil corrosion and high temperature stability, and has high mechanical strength. It is not easily damaged or deformed by long-term oil flushing. The 80-120 mesh filtration precision design can accurately intercept common non-magnetic impurities in engine oil. This avoids rapid clogging of the filter screen and obstruction of engine oil flow due to excessive precision, while also preventing fine impurities from entering the gear pump 1 through the filter screen due to insufficient precision, thus balancing filtration effect and oil flow.

[0029] In one embodiment, reference is made to Figures 4-5 The magnetic suction tube 31 includes a magnetic tube body 311, which is a hollow structure. The hollow structure provides a flow channel for the engine oil, ensuring that the engine oil can flow through and contact the magnetic strip 314.

[0030] Among them, the magnetic tube body 311 is made of nickel-plated soft iron. Soft iron has extremely high magnetic permeability, which can efficiently guide the magnetic field generated by the magnetic strip 314, so that it forms a dense and closed magnetic circuit inside the magnetic tube body, avoiding the magnetic field from spreading outward and causing damage to external electronic components, while enhancing the adsorption strength and coverage of iron filings in the oil. The nickel plating layer on the surface can prevent the oil from directly corroding the soft iron.

[0031] The magnetic tube body 311 is fixedly provided with magnetic end caps 312 at both ends. In this embodiment, the magnetic end caps 312 and the magnetic tube body 311 are made of the same material, namely nickel-plated soft iron. By sealing the two ends of the magnetic tube body 311, they together form a complete magnetic structure, which strengthens the magnetic field confinement effect and prevents the magnetic field from affecting other electronic components.

[0032] A second quick-release head 35 is fixedly installed at the front end of the front magnetic end cover 312. In this embodiment, the second quick-release head 35 is fixedly installed at the front end of the front magnetic end cover 312 by welding.

[0033] The tail magnetic end cap 312 is detachably fitted with a filter cover 32. In this embodiment, the tail magnetic end cap 312 and the filter cover 32 are detachably fitted with a snap-fit. During processing, the inner hole of the tail magnetic end cap 312 is first processed, and four L-shaped elastic snap-fit ​​grooves are evenly opened in the circumferential direction of the hole wall. An annular positioning ring is processed inside the snap-fit ​​groove. At the same time, four elastic snaps that are adapted to the L-shaped snap-fit ​​grooves are integrally formed at the corresponding position on the outer periphery of the front end of the filter cover 32. An annular sealing groove adapted to the positioning ring is opened on the front end face of the filter cover 32, and a fluororubber oil-resistant sealing ring is embedded in the groove. During assembly, align the front end of the filter cover 32 with the inner hole of the magnetic end cap 312 at the rear, align the elastic buckle with the vertical section of the L-shaped buckle groove, press the filter cover 32 until the elastic buckle abuts against the positioning ring, and then rotate the filter cover 32 clockwise until the elastic buckle snaps into the horizontal section of the L-shaped buckle groove to complete the installation. The sealing ring is compressed by the positioning ring to achieve a seal. During disassembly, rotate the filter cover 32 counterclockwise until the elastic buckle returns to the vertical section, and pull it outward to remove the filter cover 32. This installation method allows for quick manual disassembly and assembly without tools, greatly improving the maintenance efficiency of replacing the filter screen 33 and cleaning impurities.

[0034] The magnetic end cap 312 has an oil flow channel in the center that is connected to the hollow structure inside the magnetic tube body 311. This design ensures the magnetic function while allowing the oil to flow smoothly through the magnetic end cap 312.

[0035] The inner wall of the magnetic tube body 311 is provided with several mounting grooves 313, which are used to accurately position and fix the magnetic strip 314.

[0036] A magnetic strip 314 is fixedly embedded in the mounting slot 313. The magnetic strip 314 actively attracts iron filings suspended in the oil through its own strong magnetic field to prevent iron filings from entering the gear pump 1 or the engine interior along with the oil and causing grinding damage. In this embodiment, the mounting groove 313 and the magnetic strip 314 are fixedly embedded by means of interference fit and oil-resistant adhesive bonding.

[0037] The magnetic strip 314 has a grid-like groove on the side away from the mounting groove 313. In this embodiment, the depth of the grid-like groove is 0.1-0.3mm. By designing the grid-like groove, the contact area between the magnetic strip and the engine oil can be increased, allowing more iron filings to be captured by the magnetic field. The depth of 0.1-0.3mm is adapted to the size of common iron filings in engine oil, allowing the iron filings to be embedded in the groove. The mechanical limiting of the groove sidewall and the magnetic attraction of the magnetic field form a double fixation, preventing the iron filings from falling off the surface of the magnetic strip and re-mixing into the engine oil under the flushing of high-speed engine oil or engine vibration.

[0038] Working principle: The gear pump 1 generates negative pressure in the oil suction chamber of the pump body by meshing and rotating the internal driving gear and driven gear. This negative pressure acts in the opposite direction on the filter tube 3 after passing through the inlet 2 and the first quick-release head 34, driving the engine oil in the oil pan to enter the magnetic suction tube 31 through the second quick-release head 35. After the engine oil enters the magnetic suction tube 31, it flows through the magnetic tube body 311 made of nickel-plated soft iron. The magnetic strip 314 in the mounting groove 313 on the inner wall of the magnetic tube body 311 generates a magnetic field, and the magnetic tube body 311 and the magnetic end cap 312 of the same material form a closed magnetic circuit. Ferromagnetic impurities in the engine oil are attracted to the surface of the magnetic strip 314 under the action of the magnetic force. The grid-like grooves with a depth of 0.1-0.3mm on the magnetic strip 314 fix the iron filings through mechanical limiting and magnetic attraction, preventing them from being washed off by the high-speed engine oil. The oil that has completed the adsorption of iron filings enters the filter cover 32 through the oil flow channel in the center of the magnetic end cap 312 at the tail. The 80-120 mesh stainless steel woven filter screen 33 inside the filter cover 32 intercepts non-magnetic impurities that have not been magnetically attracted. The cleaned engine oil, after double purification, enters the inlet 2 through the first quick-release head 34. The gear pump 1 pressurizes it and delivers it to key components such as the engine crankshaft, bearings, and valves for lubrication.

[0039] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Those skilled in the art should understand that the above embodiments are merely for illustrative purposes and are not intended to limit the scope of this application. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of this application.

Claims

1. A highly reliable oil pump assembly, comprising a gear pump (1), wherein an inlet (2) is provided on the outside of the gear pump (1); Its features are: It also includes a filter tube (3), which is fixedly installed at the oil inlet end of the inlet port (2). The filter tube (3) includes a magnetic suction tube (31), which is a hollow structure. A filter cover (32) is detachably installed at the tail end of the magnetic suction tube (31). A filter screen (33) is provided inside the filter cover (32). A first quick-release head (34) is fixedly installed at the tail end of the filter cover (32). The first quick-release head (34) is detachably fixedly connected to the oil inlet end of the inlet port (2). A second quick-release head (35) is fixedly installed at the front end of the magnetic suction tube (31).

2. The high-reliability oil pump assembly according to claim 1, characterized in that: The magnetic tube (31) includes a magnetic tube body (311), which is a hollow structure. Magnetic end caps (312) are fixedly installed at both ends of the magnetic tube body (311). A second quick-release head (35) is fixedly installed at the front end of the magnetic end cap (312), and a filter cap (32) is detachably embedded at the rear end of the magnetic end cap (312). Several mounting grooves (313) are arrayed on the inner wall of the magnetic tube body (311), and magnetic strips (314) are fixedly embedded in the mounting grooves (313).

3. The high-reliability oil pump assembly according to claim 2, characterized in that: The magnetic strip (314) has a grid-like groove on the side away from the mounting groove (313).

4. The high-reliability oil pump assembly according to claim 1, characterized in that: The filter screen (33) and the filter cover (32) are detachably fixedly connected. The inner wall of the filter cover (32) is provided with an annular groove corresponding to the edge of the filter screen (33). The edge of the filter screen (33) is embedded in the annular groove, and an oil-resistant sealing gasket is provided between the filter screen (33) and the annular groove.

5. The high-reliability oil pump assembly according to claim 2, characterized in that: The magnetic end cap (312) has an oil flow channel at its center that communicates with the hollow structure inside the magnetic tube body (311).

6. The high-reliability oil pump assembly according to claim 2, characterized in that: The magnetic tube body (311) is made of nickel-plated soft iron.

7. The high-reliability oil pump assembly according to claim 4, characterized in that: The filter screen (33) is a stainless steel woven mesh with a filtration accuracy of 80-120 mesh, and the diameter of the filter screen (33) is adapted to the inner diameter of the filter cover (32).

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