Oil filter

Abstract

The utility model relates to an oil filter. The engine oil filter comprises a first shell, a filter screen assembly and a magnetic bar, an oil inlet is formed outside the first shell, a filter channel is formed in the first shell, the two ends of the filter channel are communicated with the oil inlet and an electric pump suction inlet respectively, and the filter screen assembly is located in the filter channel and used for filtering large particles and impurities in engine oil. The magnetic bar is arranged in the filter screen assembly in a sleeved mode and used for adsorbing small metal particle impurities in engine oil. Compared with the prior art, the assembly integration degree of the oil filter is higher, the metal filter screen is the cylindrical filter screen, the surface area of the circumference is better utilized, the metal filter screen is pre-embedded in the second shell, the magnetic bar is in threaded connection with the threaded insert pre-embedded in the second shell, and under the same function and performance, the space is more compact; the engine oil filter is suitable for areas with compact space and limited length and width, and in addition, the engine oil filter is easy to install and more convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machine oil filtration, and relates to a machine oil filter, in particular to a machine oil filter integrated with magnetic rod adsorption filtration and screen interception filtration and applied to a new energy vehicle electric drive axle module. BACKGROUND

[0002] At present, with the rise of new energy electric vehicles, more and more electric or hydrogen fuel trucks appear on the market, and more and more e-axle systems in the trucks, the e-axle system contains two key subsystems, one is a gearbox lubrication system, and the other is a motor cooling system; the electric pump is an important power component for ensuring the reliable operation of the lubrication and cooling systems, and the reliability and efficiency of the electric pump are directly related to the performance of the entire e-axle system. However, the existing products on the market only have a common screen filter in front of the electric pump, and the particle interception efficiency is too low, which cannot effectively prevent particles from entering the electric pump, thereby possibly causing wear, jamming or abnormal operation of the electric pump. In addition, some existing products are provided with other filter components in addition to the screen filter, for example, patent CN218293683U discloses a machine oil coarse filter and a vehicle, which comprises a shell, a machine oil channel, a first filter screen element and a second filter screen element arranged at the inlet end and the outlet end of the machine oil channel, and a magnetic attraction element arranged between the first filter screen element and the second filter screen element, the first filter screen element and the second filter screen element are used for filtering iron filings in the machine oil. However, the assembly integration of the patent is not high, and the device is not suitable for areas with limited space, especially areas with limited length and width, and the device is complex to install, which is not convenient for end users. SUMMARY

[0003] The utility model aims at providing a machine oil filter, specifically providing a machine oil filter integrated with magnetic rod adsorption filtration and screen interception filtration and applied to a new energy vehicle electric drive axle module, to solve the problems that the existing machine oil filter cannot effectively prevent particles from entering the electric pump, thereby possibly causing wear, jamming or abnormal operation of the electric pump, and the existing machine oil filter has limited space, is complex to install and is not convenient for end users.

[0004] The utility model can achieve the purpose by the following technical scheme:

[0005] The utility model provides a machine oil filter, which comprises

[0006] A first shell is provided with an oil inlet and a filter channel inside, and the filter channel is connected with the oil inlet and the electric pump suction inlet at both ends;

[0007] A screen assembly is arranged in the filter channel and used for filtering larger particles and impurities in the machine oil;

[0008] A magnetic rod is sleeved in the filter screen assembly to adsorb small metal particle impurities in the engine oil.

[0009] Further, the filter screen assembly comprises a second shell with a cavity, a filter screen embedded in the cavity of the second shell, and a sealing ring arranged at both ends of the second shell.

[0010] Further, the second shell is a cylindrical shell, and the filter screen is a cylindrical filter screen.

[0011] Further, the filter screen has a filter aperture of 100-200 microns.

[0012] Further, the filter aperture of the filter screen can be adjusted according to different electric pump requirements.

[0013] Further, the second shell is a plastic shell, and the filter screen and the second shell are integrally injection molded. That is, the filter screen and the second shell are an integral whole, and they are firmly connected, can withstand greater stress and pressure, in addition, injection molding can ensure that there is no gap between the filter screen and the second shell, thereby providing good sealing to prevent engine oil leakage, and integral injection molding connection can reduce the assembly steps in the manufacturing process, thereby reducing production costs.

[0014] Further, the second shell comprises a first connecting section, a hollow section, and a second connecting section connected in sequence along the direction of engine oil flow, and the cavity is in the hollow section.

[0015] Further, a first thread is arranged around the first connecting section, a second thread is arranged on the first shell, and the first thread and the second thread are threadedly connected. The circumferential thread rotation has no direction limitation, and it is a reliable mounting and dismounting structure.

[0016] Further, a threaded insert is arranged in the first connecting section, and a threaded block is fixedly arranged at one end of the magnetic rod, and the threaded block is threadedly connected with the threaded insert. The magnetic rod is sleeved in the filter screen, has higher integration, is more compact in the same function and performance, is suitable for areas with compact space and limited length and width, and better utilizes the surface area of the circumference. In addition, the magnetic rod is added before the electric pump to adsorb more metal particle impurities, reduces the risk of wear caused by impurities sticking to the electric pump, and ensures the reliable operation of the lubrication system.

[0017] Further, the sealing ring is an O-shaped sealing ring, the sealing ring comprises a first sealing ring and a second sealing ring, a first groove is circumferentially arranged on the first connecting section, close to the first thread, and away from one end of the second connecting section, and the first sealing ring is arranged in the first groove.

[0018] Further, the rubber sealing ring end surface is axially sealed or the O-shaped ring is radially sealed to avoid oil leakage and ensure the sealing of the structure.

[0019] Further, a second groove is formed in the circumferential direction on the second connecting section, and the second sealing ring is arranged in the second groove.

[0020] Further, the filter screen is a metal filter screen, and the cross section of the filter screen is circular.

[0021] Further, a one-way valve is arranged between the oil inlet and the filter channel, and the one-way valve is perpendicular to the filter screen.

[0022] Further, the one-way valve is screwed or interference fitted with the first shell.

[0023] Further, the first shell is an aluminum die-cast shell.

[0024] The working principle of the utility model is as follows:

[0025] When the whole vehicle is powered on and the electric pump works, the lubricating oil or gearbox oil in the oil pan of the whole vehicle is sucked into the oil inlet of the oil filter module, and then is filtered on the surface of the screen through the one-way valve and the coarse filter, and the large particles are intercepted, and then the small particles or part of the large particles are adsorbed through the magnetic rod, and then directly enter the oil pump, so that the clean oil enters the oil pump, and is delivered to the pipelines that need to be lubricated through the pressurization in the oil pump.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] 1) The assembly of the oil filter in the utility model has higher integration, the metal filter screen is a cylindrical filter screen, the surface area of the circumference is better utilized, the metal filter screen is pre-buried in the second shell, the magnetic rod is threadedly connected with the pre-buried threaded insert of the second shell, the space is more compact under the same function and performance, and the utility model is suitable for the areas that are compact in space and limited in length and width.

[0028] 2) The magnetic rod is arranged in the filter screen in the utility model, the space utilization rate is relatively high, the main oil passage flow resistance is not increased, the filter screen is maintained together, and after-sales maintenance is more convenient.

[0029] 3) The oil filter in the utility model is simple to install and convenient to maintain, and only needs to be disassembled to clean the filter screen or the magnetic rod, the second shell is threadedly connected with the first shell, the O-shaped ring is radially sealed, only common tools are needed, and the magnetic rod can be screwed out, which is very convenient for the end user.

[0030] 4) The utility model is applied to new energy vehicle electric drive axle module, realizes the purpose that filters big particle and smaller particle, protects electric pump. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is structural diagram of oil filter in the utility model;

[0032] Figure 2 It is structural diagram of filter screen subassembly and magnet bar in the utility model;

[0033] Figure 3 It is three-dimensional structural diagram of filter screen subassembly in the utility model;

[0034] Figure 4 It is system working principle diagram in the utility model;

[0035] Mark description in drawing:

[0036] 1 - check valve, 2 - filter screen, 3 - magnet bar, 4 - first shell, 5 - electric pump suction inlet, 6 - oil inlet, 7 - second shell, 71 - first connecting section, 72 - hollow section, 73 - second connecting section, 8 - first thread, 9 - second thread, 10 - threaded insert, 11 - threaded block, 12 - first recess, 13 - second recess, 14 - first sealing ring, 15 - second sealing ring. DETAILED DESCRIPTION

[0037] The utility model will be explained in detail below in combination with the drawings and specific embodiments. The following embodiments are implemented on the premise of the above technical solutions of the utility model, and detailed implementation mode and specific operation process are given, but the protection scope of the utility model is not limited to the following embodiments.

[0038] It should be noted that: similar signs and letters show similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0039] Some embodiments of the utility model will be explained in detail below in combination with the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] In the following embodiments, if no special raw material or processing technology is specified, it indicates that it is a conventional commercially available raw material product or conventional processing technology in the field. If no special functional component or structure is specified, it indicates that it is a conventional component or conventional structure adopted in the field to realize the corresponding function.

[0041] Embodiment:

[0042] An oil filter, such as Figure 1As shown, comprising a first shell 4, an oil inlet 6, an internal filter channel, the filter channel is connected with the oil inlet 6 and the electric pump suction inlet 5 respectively, the first shell 4 is an aluminum die-cast shell; filter screen assembly, located in the filter channel, for filtering larger particles and impurities in the oil; magnetic bar 3, sleeved in the filter screen assembly, for adsorbing smaller metal particle impurities in the oil, the magnetic bar before the electric pump increases the adsorption, can adsorb more metal particle impurities, reduce the risk of wear caused by impurities jamming the electric pump, ensure the operation reliability of the lubrication system. Figure 2 It is a structural diagram of the filter screen assembly and the magnetic bar, Figure 3 It is a three-dimensional structural diagram of the filter screen assembly, as can be seen, the filter screen assembly includes a second shell 7 with a cavity, a filter screen 2 embedded in the cavity of the second shell 7, and an O-shaped first sealing ring 14 and a second sealing ring 15 arranged at both ends of the second shell 7, the second shell 7 is a cylindrical plastic shell, including a first connecting section 71, a hollow section 72 and a second connecting section 73 connected in turn along the oil flow direction, the cavity is in the hollow section 72, the first connecting section 71 is provided with a first thread 8, the first shell 4 is provided with a second thread 9, the first thread 8 is connected with the second thread 9 by thread cooperation, the filter screen 2 is installed on the first shell 4, wherein the filter screen 2 is a cylindrical metal filter screen with a filter aperture of 200μm, the filter screen 2 is integrally injection molded with the second shell 7, which can ensure that there is no gap between the filter screen 2 and the second shell 7, thereby providing good sealing to prevent oil leakage, the integrated injection molding connection can reduce the assembly steps in the manufacturing process, thereby reducing the production cost, the filter screen cross section is circular, which can better utilize the circumferential cross-sectional area, ensuring the filtering area while arranging more compactly; the first connecting section 71 is provided with a first groove 12 along the circumference near the first thread 8 and away from one end of the second connecting section 73, the first sealing ring 14 is arranged in the first groove 12, the second connecting section 73 is provided with a second groove 13 along the circumference, and the second sealing ring 15 is arranged in the second groove 13, which avoids oil leakage and ensures the sealing of the structure. The first connecting section 71 is provided with a threaded insert 10, one end of the magnetic bar 3 is fixedly provided with a threaded block 11, and the threaded block 11 is threadedly connected with the threaded insert 10, so that the magnetic bar 3 is sleeved in the filter screen 2, which has higher integration, the space is more compact under the same function and performance, and is suitable for areas with limited space and length and width, which better utilizes the circumferential surface area. In addition, a one-way valve 1 is arranged between the oil inlet 6 and the filter channel, the one-way valve 1 is perpendicular to the filter screen 2, and the one-way valve 1 is connected with the first shell 4 by screwing or interference fit.

[0043] Figure 4The system working principle diagram of the oil filter in the embodiment is shown in the figure. In working, the whole vehicle is powered, the electric pump works, the electric pump suction inlet 5 sucks the lubricating oil or gearbox oil in the oil pan of the whole vehicle to the oil filter module oil inlet 6, passes through the one-way valve 1 and then passes through the coarse filter 2 to carry out screen surface filtration, intercepts large particles, then passes through the magnetic rod adsorption to carry out secondary filtration, adsorbs small particles or part of large particles, and then directly enters the oil pump, ensures that the clean oil enters the oil pump, and through the pressurization in the oil pump, is delivered to each pipeline needing lubrication.

[0044] The filter hole diameter of the filter screen 2 in the above embodiment can be adjusted according to different electric pump requirements, and the same set of plastic shell molds (the first shell 4) can be realized.

[0045] The above description of the embodiments is for facilitating the ordinary skilled person in the technical field to understand and use the utility model. The person skilled in the art can obviously easily make various modifications to the embodiments, and apply the general principles described herein to other embodiments without having to go through creative labor. Therefore, the utility model is not limited to the above embodiments, and the improvements and modifications made by the person skilled in the art according to the disclosure of the utility model without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims

1. An oil filter characterized by comprising: Comprising A first shell (4) is provided with an oil inlet (6) and a filter channel, the filter channel is connected with the oil inlet (6) and the electric pump suction inlet (5) respectively; A filter assembly is arranged in the filter channel to filter larger particles and impurities in the oil; A magnetic rod (3) is arranged in the filter assembly to adsorb smaller metal particle impurities in the oil.

2. The oil filter according to claim 1, characterized in that The filter assembly comprises a second shell (7) with a cavity, a filter screen (2) embedded in the cavity of the second shell (7), and a sealing ring arranged at both ends of the second shell (7).

3. The oil filter according to claim 2, characterized in that The second shell (7) is a plastic shell, and the filter screen (2) and the second shell (7) are integrally injection molded.

4. The oil filter of claim 2, wherein The second shell (7) comprises a first connecting section (71), a hollow section (72) and a second connecting section (73) connected in sequence along the oil flow direction, and the cavity is in the hollow section (72).

5. The oil filter of claim 4, wherein A first thread (8) is arranged on the periphery of the first connecting section (71), a second thread (9) is arranged on the first shell (4), and the first thread (8) is threadedly connected with the second thread (9).

6. The oil filter of claim 4, wherein A threaded insert (10) is arranged in the first connecting section (71), one end of the magnetic rod (3) is fixedly provided with a threaded block (11), and the threaded block (11) is threadedly connected with the threaded insert (10).

7. The oil filter of claim 4, wherein The sealing ring is an O-shaped sealing ring; the sealing ring comprises a first sealing ring (14) and a second sealing ring (15); a first groove (12) is arranged on the first connecting section (71) near the first thread (8) and away from one end of the second connecting section (73) in the circumferential direction, and the first sealing ring (14) is arranged in the first groove (12).

8. The oil filter according to claim 7, characterized in that A second groove (13) is arranged on the second connecting section (73) in the circumferential direction, and the second sealing ring (15) is arranged in the second groove (13).

9. The oil filter of claim 7, wherein The filter screen (2) is a metal filter screen; the cross section of the filter screen (2) is circular.

10. The oil filter of claim 7, wherein A one-way valve (1) is further arranged between the oil inlet (6) and the filter channel, and the one-way valve (1) is perpendicular to the filter screen (2).

Images