An oil filter modular cartridge assembly

By using a modular design for the inner and outer filter elements and a star-shaped frame support, the problems of small filtration space and inconvenient cleaning of oil filter elements are solved, enabling efficient disassembly and cleaning of filter elements and reducing replacement costs.

CN224292681UActive Publication Date: 2026-05-29GUAN JINNUO FILTER EQUIPMENT MANUFACTURING CO LTD
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Patent Information

Application Number
CN202521425975.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-08
Publication Date
2026-05-29
Estimated Expiration
2035-07-08

AI Technical Summary

Technical Problem

The existing oil filter cartridges have a multi-layer composite structure, resulting in small filtration space, inconvenient replacement and cleaning, and high cost.

Method used

The internal and external filter elements adopt a modular design. The internal filter element consists of a primary internal filter screen and a secondary internal filter screen, while the external filter element consists of a primary external filter screen and a secondary external filter screen. They are detachable through a connecting mechanism and supported by a star-shaped filter element frame, which increases the filtration space and facilitates disassembly and assembly.

Benefits of technology

This allows for modular disassembly and cleaning of the filter element, increasing filtration space, reducing replacement costs, and improving the filter element's support strength and filtration efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a filter module filter core subassembly, including the upper end board, the bottom of upper end board is equipped with the inner filter core, the bottom of inner filter core is equipped with lower end seat, the outside of inner filter core is equipped with the outer filter core, the top of outer filter core is connected with upper end board through the connecting mechanism, the bottom of outer filter core is equipped with lower end board, the top of upper end board is equipped with the filter core port of intercommunication with inner filter core, and inner filter core and outer filter core all are cylinder filter core structure arrangement, and the filter core skeleton is equipped between inner filter core and outer filter core, and the filter core skeleton is evenly equipped with several, and inner filter core and outer filter core all adopt double -deck filter screen structure arrangement. The utility model discloses a series of structures are set up, and inner filter core and outer filter core modular composition filter core of filter, increase the filter space of multilayer filter screen composite filter core, and the modular filter core structure support strength is high, and filter core filter surface is big, and the detachable between outer filter core and inner filter core, and filter core modular dismounting replacement and cleaning, and modular dismounting is convenient.
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Description

Technical Field

[0001] This utility model relates to the field of oil filter element technology, specifically a modular filter element assembly for an oil filter machine. Background Technology

[0002] An oil filter is a device used to filter and purify oil. Its main function is to remove impurities, moisture, and gases from the oil, restoring or improving its quality and performance. The filter element is a key component of the oil filter, primarily used to filter impurities from the oil, ensuring its purity and the efficient operation of the equipment. Oil filter elements are typically made of single or multiple layers of metal mesh and filter media, and are installed in filters within hydraulic systems and oil filters.

[0003] Currently, oil filter cartridges are composed of multi-layer filter screens. Although multi-layer filter screens have good filtration effect, the filtration space of the multi-layer filter screens is small. Moreover, the oil filter needs to be replaced as a whole when the filter cartridge is replaced, which is costly. In addition, it is inconvenient to clean the inside of the multi-layer filter screens, resulting in poor practicality. Utility Model Content

[0004] The purpose of this utility model is to provide a modular filter element assembly for an oil filtration machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular filter element assembly for an oil filtration machine, comprising an upper end plate, an inner filter element at the bottom of the upper end plate, a lower end seat at the bottom of the inner filter element, an outer filter element outside the inner filter element, the top of the outer filter element being connected to the upper end plate via a connecting mechanism, a lower end plate at the bottom of the outer filter element, and a filter element port communicating with the inner filter element at the top of the upper end plate. Both the inner and outer filter elements are cylindrical filter element structures, and a filter element skeleton is provided between the inner and outer filter elements. Several filter element skeletons are evenly spaced at equal intervals, and both the inner and outer filter elements adopt a double-layer filter screen structure.

[0006] Preferably, the connecting mechanism includes a connecting groove and a connecting cylinder. The bottom of the upper end plate on the outer side of the inner filter element is provided with a connecting groove of an annular structure, and the top of the outer filter element is provided with a connecting cylinder of a cylindrical structure. The connecting cylinder is located inside the connecting groove.

[0007] Preferably, the outer surface of the connecting cylinder is provided with external threads, the inside of the connecting groove is provided with internal threads, and the connecting cylinder and the connecting groove are threadedly connected.

[0008] Preferably, the lower end plate has a positioning platform at its top and a positioning groove at its bottom, with the positioning platform located inside the positioning groove.

[0009] Preferably, the filter element frame is arranged in a star-shaped structure, and the filter element frame is connected to the inner filter element and the outer filter element by a dotted connection. The filter element frame is fixedly installed with the outer filter element.

[0010] Preferably, the inner filter element consists of a primary inner filter and a secondary inner filter. The primary inner filter has a secondary inner filter inside it. The primary inner filter is made of glass fiber and the secondary inner filter is made of polyester fiber.

[0011] Preferably, the external filter element consists of a primary external filter and a secondary external filter. The primary external filter has a secondary external filter inside it. The primary external filter is made of stainless steel, and the secondary external filter is made of activated carbon.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This oil purifier features a modular filter element assembly. The inner filter element consists of a primary inner filter screen and a secondary inner filter screen, while the outer filter element consists of a primary outer filter screen and a secondary inner filter screen. This modular design increases the filtration space of the multi-layer composite filter element. The star-shaped filter element skeleton between the inner and outer filter elements provides high structural strength and a large filtration surface.

[0014] 2. The modular filter element assembly of this oil filter machine uses a connecting cylinder on the outer filter element to cooperate with the connecting groove on the upper end plate. The outer filter element is threaded together, and the outer filter element and the inner filter element can be disassembled and installed. This allows the filter element of the oil filter machine to be modularly disassembled, replaced, and cleaned. The modular disassembly and assembly are convenient and the assembly is firm. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the lower end plate in this utility model;

[0017] Figure 3 This is a schematic diagram of the upper end plate in this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the outer and inner filter elements in this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the inner filter element in this utility model.

[0020] In the diagram: 1. Upper end plate; 2. Inner filter element; 21. Primary inner filter screen; 22. Secondary inner filter screen; 3. Lower end seat; 4. Lower end plate; 5. Outer filter element; 51. Primary outer filter screen; 52. Secondary outer filter screen; 6. Filter element frame; 7. Filter element port; 8. Connecting groove; 9. Connecting cylinder; 91. External thread; 10. Positioning platform; 11. Positioning groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] like Figures 1 to 5 As shown, the modular filter element assembly of the oil purifier in this embodiment includes an upper end plate 1, an inner filter element 2 at the bottom of the upper end plate 1, a lower end seat 3 at the bottom of the inner filter element 2, an outer filter element 5 on the outside of the inner filter element 2, and a top of the outer filter element 5 connected to the upper end plate 1 through a connecting mechanism. A lower end plate 4 is provided at the bottom of the outer filter element 5, and a filter element port 7 communicating with the inner filter element 2 is provided at the top of the upper end plate 1. Both the inner filter element 2 and the outer filter element 5 are cylindrical filter element structures. A filter element skeleton 6 is provided between the inner filter element 2 and the outer filter element 5. Several filter element skeletons 6 are evenly spaced. Both the inner filter element 2 and the outer filter element 5 adopt a double-layer filter screen structure, realizing the modular composition of the inner filter element 2 and the outer filter element 5 of the oil purifier filter element. This increases the filtration space of the multi-layer filter screen composite filter element. The modular filter element structure has high support strength and a large filter element filtration surface. The outer filter element 5 and the inner filter element 2 can be disassembled and installed, allowing the oil purifier filter element to be modularly disassembled, replaced, and cleaned. The modular disassembly and assembly are convenient and the assembly is firm.

[0024] Specifically, the connecting mechanism includes a connecting groove 8 and a connecting cylinder 9. The bottom of the upper end plate 1 on the outer side of the inner filter element 2 is provided with a connecting groove 8 in the shape of a ring, and the top of the outer filter element 5 is provided with a connecting cylinder 9 in the shape of a cylinder. The connecting cylinder 9 is located inside the connecting groove 8. The connecting cylinder 9 and the upper end plate 1 are easy to assemble and disassemble, that is, the outer filter element 5 and the inner filter element 2 are easy to assemble and disassemble.

[0025] Furthermore, the outer surface of the connecting cylinder 9 is provided with an external thread 91, and the inside of the connecting groove 8 is provided with an internal thread. The connecting cylinder 9 and the connecting groove 8 are connected by threads, which makes disassembly and assembly convenient and secure installation.

[0026] Furthermore, the lower end plate 4 is provided with a positioning platform 10 at the top and a positioning groove 11 at the bottom of the lower end seat 3. The positioning platform 10 is located inside the positioning groove 11. The positioning platform 10 and the positioning groove 11 position the installation between the lower end seat 3 and the lower end plate 4, thereby increasing the structural stability of the inner filter element 2 and the outer filter element 5.

[0027] Furthermore, the filter element frame 6 is arranged in a star-shaped structure. The filter element frame 6 is connected to the inner filter element 2 and the outer filter element 5 by a dot-type connection. The contact area between the filter element frame 6 and the inner filter element 2 and the outer filter element 5 is small, resulting in minimal obstruction to the filter surface. The filter element frame 6 is fixedly installed with the outer filter element 5. The filter element frame 6 is installed synchronously between the outer filter element 5 and the inner filter element 2 along with the outer filter element 5.

[0028] Furthermore, the inner filter element 2 is composed of a primary inner filter screen 21 and a secondary inner filter screen 22. The primary inner filter screen 21 is equipped with a secondary inner filter screen 22. The primary inner filter screen 21 is made of glass fiber, and the secondary inner filter screen 22 is made of polyester fiber. The inner filter element 2 achieves double-layer filtration through the glass fiber filter screen and the polyester fiber filter screen.

[0029] Furthermore, the outer filter element 5 consists of a primary outer filter screen 51 and a secondary outer filter screen 52. The primary outer filter screen 51 has a secondary outer filter screen 52 inside. The primary outer filter screen 51 is made of stainless steel, and the secondary outer filter screen 52 is made of activated carbon. The outer filter element 5 has high structural strength and achieves double-layer filtration through the stainless steel filter screen and the activated carbon filter screen.

[0030] The usage method of this embodiment is as follows: The connecting cylinder 9 of the outer filter element 5 is installed in the connecting groove 8 of the upper end plate 1 through the internal thread and the external thread 91. The positioning platform 10 on the top of the lower end plate 4 is installed in the positioning groove 11 of the lower end seat 3. The outer filter element 5, which consists of a primary outer filter screen 51 and a secondary outer filter screen 52, is installed on the upper end plate 1 outside the inner filter element 2, which consists of a primary inner filter screen 21 and a secondary inner filter screen 22. The filter element skeleton 6 inside the outer filter element 5 is installed synchronously with the outer filter element 5. The star-shaped filter element skeleton 6 is installed between the outer filter element 5 and the inner filter element 2 for support. The oil flows from the outside to the inside through the primary outer filter screen 51, the secondary outer filter screen 52, and the primary inner filter screen 22. The filter screen 21 and the secondary internal filter screen 22 perform multiple filtrations before being discharged through the filter element port 7. This achieves modular composition of the inner filter element 2 and the outer filter element 5 of the oil filter. The modular space between the inner filter element 2 and the outer filter element 5 increases the filtration space of the multi-layer filter screen composite filter element. The star-shaped filter element skeleton 6 between the inner filter element 2 and the outer filter element 5 has a small contact surface with the filter element, reducing the obstruction of the filter element surface by the filter element skeleton 6. The modular filter element structure has high support strength and a large filter element filtration surface. The outer filter element 5 is threaded and can be disassembled from the inner filter element 2, allowing the oil filter element to be modularly disassembled, replaced, and cleaned. Modular disassembly and cleaning are convenient and the assembly is firm.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular filter element assembly for an oil filtration machine, comprising an upper end plate (1), characterized in that: The bottom of the upper end plate (1) is provided with an inner filter element (2), the bottom of the inner filter element (2) is provided with a lower end seat (3), the outside of the inner filter element (2) is provided with an outer filter element (5), the top of the outer filter element (5) is connected to the upper end plate (1) through a connecting mechanism, the bottom of the outer filter element (5) is provided with a lower end plate (4), the top of the upper end plate (1) is provided with a filter element port (7) communicating with the inner filter element (2), the inner filter element (2) and the outer filter element (5) are both arranged in a cylindrical filter element structure, a filter element skeleton (6) is provided between the inner filter element (2) and the outer filter element (5), and several filter element skeletons (6) are evenly arranged at equal intervals, and the inner filter element (2) and the outer filter element (5) are both arranged with a double-layer filter screen structure.

2. The modular filter element assembly for an oil filtration machine according to claim 1, characterized in that: The connecting mechanism includes a connecting groove (8) and a connecting cylinder (9). The bottom of the upper end plate (1) on the outer side of the inner filter element (2) is provided with a connecting groove (8) of an annular structure, and the top of the outer filter element (5) is provided with a connecting cylinder (9) of a cylindrical structure. The connecting cylinder (9) is located inside the connecting groove (8).

3. The modular filter element assembly for an oil filtration machine according to claim 2, characterized in that: The outer surface of the connecting cylinder (9) is provided with an external thread (91), and the inside of the connecting groove (8) is provided with an internal thread. The connecting cylinder (9) and the connecting groove (8) are threadedly connected.

4. The modular filter element assembly for an oil filtration machine according to claim 1, characterized in that: The lower end plate (4) is provided with a positioning platform (10) at the top, and the lower end seat (3) is provided with a positioning groove (11) at the bottom. The positioning platform (10) is located inside the positioning groove (11).

5. The modular filter element assembly for an oil filtration machine according to claim 1, characterized in that: The filter element frame (6) is arranged in a star-shaped structure. The filter element frame (6) is connected to the inner filter element (2) and the outer filter element (5) by a dot-type connection. The filter element frame (6) is fixedly installed with the outer filter element (5).

6. The modular filter element assembly for an oil filtration machine according to claim 1, characterized in that: The inner filter element (2) consists of a primary inner filter (21) and a secondary inner filter (22). The primary inner filter (21) is equipped with a secondary inner filter (22). The primary inner filter (21) is made of glass fiber, and the secondary inner filter (22) is made of polyester fiber.

7. The modular filter element assembly for an oil filtration machine according to claim 1, characterized in that: The external filter element (5) consists of a primary external filter (51) and a secondary external filter (52). The primary external filter (51) is equipped with a secondary external filter (52). The primary external filter (51) is made of stainless steel, and the secondary external filter (52) is made of activated carbon.