An oil filter connection structure
By employing a threaded groove design to install the filter element and a rotating cleaning assembly in the oil filter, the problems of filter element clogging and reduced sealing performance are solved, achieving efficient, stable operation and long service life of the oil filter.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI YUNXIN AUTO PARTS MANUFACTURING CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-23
AI Technical Summary
Filter elements are prone to clogging during long-term use, which obstructs the flow of oil, affects the filtration function, and frequent disassembly and installation leads to a decrease in sealing performance and an increase in operating costs.
An oil filter connection structure was designed, which uses a threaded groove to install the filter element and a rotating ring installed in the groove. Combined with the cleaning component, the oil inlet flow force drives the cleaning plate to clean the dirt on the surface of the filter element, avoiding frequent disassembly.
It improves the installation stability and filtration efficiency of the filter element, extends the service life of the oil filter, reduces maintenance costs and time, and ensures the stability of filtration performance.
Smart Images

Figure CN224388278U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil filter technology, and in particular to an oil filter connection structure. Background Technology
[0002] Oil filters primarily use a filter medium to intercept contaminants in the oil. When oil flows through the filter, contaminants are blocked by the filter medium, while clean oil continues to flow through, thus purifying the oil. Different types of oil filters may have slightly different working principles, but the core principle is the interception of contaminants by the filter medium.
[0003] However, during long-term operation, the filter element of an oil filter is constantly subjected to the impact and accumulation of various impurities in the oil. As the usage time continues to extend, the filter element will gradually become clogged due to the adhesion of a large number of impurities. Once the filter element is clogged, the flow of oil will be obstructed, thus affecting the normal filtration function of the oil filter. Therefore, it is necessary to remove the filter element for cleaning regularly to restore its filtration performance. However, frequent disassembly and reassembly of the oil filter may cause varying degrees of damage to the sealing structure of the oil filter each time, leading to sealing problems. Once the sealing performance declines, oil leakage may occur, which will not only waste oil but may also pollute the surrounding environment and even affect the normal operation of the entire system. On the other hand, frequent disassembly and reassembly operations will consume a lot of time and manpower, leading to increased equipment downtime, which in turn affects the working efficiency of the oil filter and even the entire related system, increasing operating costs. Utility Model Content
[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution: an oil filter connection structure, comprising a filter cylinder, a connector for oil inlet mounted on the top of the filter cylinder, an oil inlet annular groove formed between the filter cylinder and the connector, a threaded groove formed at the upper end of the inside of the filter cylinder, a filter element installed inside the filter cylinder through the threaded groove, a rotating groove formed at the upper end of the inside of the filter cylinder below the threaded groove, a rotating ring rotatably mounted inside the rotating groove, a plurality of oblique through grooves formed on the surface of the rotating ring, and a cleaning component for cleaning stains on the surface of the filter element provided on the rotating ring.
[0005] As an improvement to the above technical solution, the cleaning component includes a fixing ring and a cleaning plate. A locking groove is provided below the rotating ring, and several inclined locking blocks are provided inside the locking groove. The upper and lower ends of the filter element are movably fitted with fixing rings, and several cleaning plates are provided between the fixing rings. An inclined locking block corresponding to the inclined locking block is provided at the upper end of the fixing ring.
[0006] As an improvement to the above technical solution, the opening direction of the inclined through groove is consistent with the setting direction of the inclined locking block one, and the gap between the inclined locking blocks one is larger than that between the inclined locking blocks two.
[0007] As an improvement to the above technical solution, the cleaning plate has a triangular design, with the top of the cleaning plate in close contact with the surface of the filter element.
[0008] As an improvement to the above technical solution, the opening height of the engaging groove is the same as the height of the first inclined engaging block, and the first inclined engaging block and the second inclined engaging block are the same size.
[0009] The beneficial effects of this utility model are as follows: By installing a connector for oil inlet above the filter cylinder and opening an oil inlet ring groove between the filter cylinder and the connector, the oil can enter the filter cylinder evenly, avoiding concentrated oil impact on a certain part, thus improving the stability and efficiency of oil inlet. Simultaneously, a threaded groove is opened at the upper end of the filter cylinder to install the filter element. This threaded connection method not only facilitates installation and disassembly, making it easy to replace and maintain the filter element later, but also ensures the stability of the filter element installation, prevents oil leakage, ensures the normal operation of the oil filter, and effectively extends the service life of the oil filter. Furthermore, a rotating groove is opened below the threaded groove and a rotating ring is installed, providing a basis for the subsequent cleaning component. The cleaning component can be driven by the flow of oil inlet to effectively clean the dirt on the surface of the filter element, further ensuring the filtration effect of the oil filter. No other driving components are needed internally, and the filter element does not need to be frequently removed for cleaning, ensuring long-term use of the filter element and preventing frequent replacements that could affect work efficiency. Attached Figure Description
[0010] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0011] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;
[0012] Figure 3 This is a three-dimensional structural connection diagram of the fixing ring, cleaning plate, and inclined locking block II in this utility model;
[0013] Figure 4 This is a bottom view of the fixing ring and cleaning plate in this utility model;
[0014] Figure 5 This is a perspective view of the transfer ring of this utility model;
[0015] Figure 6 for Figure 2 Enlarged view of point A in the middle;
[0016] Figure 7 for Figure 6 Enlarged view of point B in the middle.
[0017] Reference numerals: 10, filter cartridge; 11, connector; 12, oil inlet ring groove; 20, threaded groove; 21, filter element; 22, rotating groove; 221, rotating ring; 222, oblique through groove; 23, locking groove; 24, oblique locking block one; 25, fixing ring; 26, cleaning plate; 27, oblique locking block two. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.
[0019] Please see Figure 1-7 This utility model provides a technical solution: an oil filter connection structure, including a filter cylinder 10, a connector 11 for oil inlet installed on the top of the filter cylinder 10, an oil inlet annular groove 12 between the filter cylinder 10 and the connector 11, a threaded groove 20 inside the upper end of the filter cylinder 10, a filter element 21 installed inside the filter cylinder 10 through the threaded groove 20, a rotating groove 22 below the threaded groove 20 inside the upper end of the filter cylinder 10, a rotating ring 221 rotatably installed inside the rotating groove 22, a plurality of oblique through grooves 222 on the surface of the rotating ring 221, and a cleaning component for cleaning stains on the surface of the filter element 21.
[0020] In this embodiment, by installing a connector 11 for oil inlet above the filter cylinder 10 and opening an oil inlet annular groove 12 between the filter cylinder 10 and the connector 11, the oil can enter the filter cylinder 10 evenly, avoiding concentrated oil impact on a certain part, thus improving the stability and efficiency of oil inlet. At the same time, a threaded groove 20 is opened at the upper end of the filter cylinder 10 to install the filter element 21. This threaded connection method is not only convenient for installation and disassembly, facilitating the replacement and maintenance of the filter element 21 in the future, but also ensures the stability of the filter element 21 installation, prevents oil leakage, ensures the normal operation of the oil filter, and effectively extends the service life of the oil filter. In addition, a rotating groove 22 is opened below the threaded groove 20 and a rotating ring 221 is installed, providing a basis for the subsequent cleaning component. The cleaning component can be driven by the flow force of the inlet oil to effectively clean the dirt on the surface of the filter element 21, further ensuring the filtration effect of the oil filter. There is no need to set other driving components inside, and there is no need to frequently remove the filter element 21 for cleaning, ensuring the long-term use of the filter element 21 and preventing frequent replacement, which would affect work efficiency.
[0021] Specifically, the cleaning assembly includes a fixing ring 25 and a cleaning plate 26. A locking groove 23 is provided below the rotating ring 221. Several inclined locking blocks 24 are provided inside the locking groove 23. The upper and lower ends of the filter element 21 are movably fitted with fixing rings 25. Several cleaning plates 26 are provided between the fixing rings 25. An inclined locking block 27 corresponding to the inclined locking block 24 is provided at the upper end of the fixing ring 25.
[0022] In this embodiment, by opening a locking groove 23 below the rotating ring 221 and setting several inclined locking blocks 24 inside the locking groove 23, and simultaneously movably sleeved fixing rings 25 around the upper and lower ends of the filter element 21, several cleaning plates 26 are set between the fixing rings 25, and an inclined locking block 27 corresponding to the inclined locking blocks 24 is set at the upper end of the fixing rings 25, so that the rotating ring 221 can drive the fixing rings 25 and the cleaning plates 26 to move together when rotating. When the oil filter is working, it can drive the cleaning plates 26 to clean the surface of the filter element 21 at all times, which greatly saves maintenance time and cost, improves the efficiency of the oil filter, and ensures that the oil filter can continuously and stably provide good filtration performance.
[0023] Specifically, the direction of the inclined through slot 222 is consistent with the direction of the inclined locking block 24, and the gap between the inclined locking blocks 24 is larger than that between the inclined locking blocks 27.
[0024] In this embodiment, by setting the opening direction of the oblique through groove 222 to be consistent with the setting direction of the oblique locking block 24, and making the gap between the oblique locking blocks 24 larger than the oblique locking block 27, and the oblique through groove 222 and the oblique locking block 24 are aligned, the rotating ring 221 can rotate more smoothly, reducing the resistance during rotation and lowering the risk of component wear caused by poor rotation. At the same time, the gap between the oblique locking blocks 24 is larger than the oblique locking block 27, ensuring that the oblique locking block 27 can smoothly engage and disengage with the oblique locking block 24 during installation and rotation, avoiding the problem of jamming or inability to install due to unsuitable size, improving the reliability and stability of the entire cleaning assembly, and ensuring the normal realization of the cleaning function.
[0025] Specifically, the cleaning plate 26 has a triangular design, with the top of the cleaning plate 26 in close contact with the surface of the filter element 21.
[0026] In this embodiment, the cleaning blade 26 adopts a triangular design with its top end tightly attached to the surface of the filter element 21. The triangular design of the cleaning blade 26 provides stronger scraping ability, enabling it to more effectively scrape off the dirt on the surface of the filter element 21, thus improving the cleaning effect. At the same time, the top end of the cleaning blade 26 is tightly attached to the surface of the filter element 21, allowing it to fully contact the filter element 21 during the cleaning process, ensuring that no dirt is missed and guaranteeing that the surface of the filter element 21 is thoroughly cleaned. Through this design, the filter element 21 can always maintain good filtration performance, reducing the problem of decreased filtration efficiency caused by dirt accumulation, extending the service life of the filter element 21, reducing the frequency of filter element 21 replacement, and thus reducing the cost of use.
[0027] Specifically, the opening height of the locking groove 23 is the same as the height of the inclined locking block 24, and the inclined locking block 24 is the same size as the inclined locking block 27.
[0028] In this embodiment, by setting the opening height of the engaging groove 23 to be the same as the height of the first inclined engaging block 24, and making the first inclined engaging block 24 and the second inclined engaging block 27 the same size, and ensuring that the first inclined engaging block 24 can be fully embedded in the engaging groove 23, the connection between the fixed ring 25 and the rotating ring 221 is more stable, and there will be no loosening or falling off during rotation, ensuring that the cleaning component can work normally. At the same time, the first inclined engaging block 24 and the second inclined engaging block 27 are the same size, making their cooperation more precise, and they can smoothly engage and disengage during rotation, improving the reliability and stability of the cleaning component, reducing the probability of failure due to size mismatch, and further ensuring the normal operation of the oil filter.
[0029] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. An oil filter connection structure, comprising a filter cylinder (10), wherein a connector (11) for oil inlet is installed above the filter cylinder (10), and an oil inlet annular groove (12) is formed between the filter cylinder (10) and the connector (11), characterized in that: The filter cylinder (10) has a threaded groove (20) at its upper end. A filter element (21) is installed inside the filter cylinder (10) through the threaded groove (20). A rotating groove (22) is provided below the threaded groove (20) at the upper end of the filter cylinder (10). A rotating ring (221) is rotatably installed inside the rotating groove (22). Several oblique through grooves (222) are provided on the surface of the rotating ring (221). The rotating ring (221) is equipped with a cleaning component for cleaning stains on the surface of the filter element (21).
2. The oil filter connection structure according to claim 1, characterized in that: The cleaning assembly includes a fixing ring (25) and a cleaning plate (26). A locking groove (23) is provided below the rotating ring (221). Several inclined locking blocks (24) are provided inside the locking groove (23). The upper and lower ends of the filter element (21) are movably fitted with fixing rings (25). Several cleaning plates (26) are provided between the fixing rings (25). An inclined locking block (27) corresponding to the inclined locking block (24) is provided at the upper end of the fixing ring (25).
3. The oil filter connection structure according to claim 2, characterized in that: The opening direction of the inclined through groove (222) is consistent with the setting direction of the inclined locking block one (24), and the gap between the inclined locking blocks one (24) is larger than that between the inclined locking blocks two (27).
4. The oil filter connection structure according to claim 2, characterized in that: The cleaning plate (26) has a triangular design, and the top of the cleaning plate (26) is in close contact with the surface of the filter element (21).
5. The oil filter connection structure according to claim 2, characterized in that: The opening height of the locking groove (23) is the same as the height of the first inclined locking block (24), and the first inclined locking block (24) is the same size as the second inclined locking block (27).