An oil filter convenient to clean

Abstract

The utility model relates to oil filter technical field discloses a kind of oil filter convenient to wash, including oil filter body, magnetic sealing mechanism, detachable multilayer filter core and centrifugal self-cleaning system. Its through the magnetic sealing mechanism being arranged at the joint surface of protection shell and back cover, utilize annular magnet and flexible metal sealing gasket's magnetic attraction effect and realize quick opening and closing, save traditional screw connection;Filter core adopts multilayer detachable structure of stainless steel filter screen and filter paper, and it is convenient to maintain and replace in stages;Integrated in the driving interface of back cover can be connected with external power source, drive filter core high-speed rotation, utilize centrifugal force and realize filter material deep cleaning. The utility model has the advantages of convenient disassembly and assembly, low maintenance cost, cleaning completely etc., effectively improves the use efficiency and economy of oil filter.

Description

Technical Field

[0001] This utility model relates to the field of oil filter technology, and in particular to an oil filter that is easy to clean. Background Technology

[0002] The oil filter is a key component of the engine lubrication system. It is responsible for filtering impurities such as metal shavings, carbon deposits, and sludge generated during the oil circulation process, ensuring the cleanliness of the oil, which is crucial for the reliable operation and service life of the engine.

[0003] Currently, the most widely used oil filters are spin-on disposable structures, where the outer shell and base are integrally formed or permanently connected by welding, threads, or other methods, and the interior is filled with a single paper filter element. After these filters reach the end of their service life, they must be unscrewed from the engine using special tools and discarded, replaced with a completely new filter assembly.

[0004] However, existing technologies have the following significant drawbacks in practical applications: the filters are disposable and cannot be opened for cleaning or replacement of the internal filter element, resulting in resource waste and increased operating costs; their housing connections often use threads or complex snaps, making disassembly and assembly cumbersome and laborious, and it is difficult to guarantee the sealing reliability after multiple disassembly and assembly, resulting in poor maintenance convenience; when the filter paper surface accumulates to a certain extent, the filtration efficiency decreases, and the entire filter must be scrapped, as its performance cannot be restored through cleaning. Utility Model Content

[0005] This invention provides an easy-to-clean oil filter, solving the problems of traditional oil filters being difficult to disassemble and install due to their one-time encapsulation structure, making it difficult to thoroughly clean the filter element, and resulting in resource waste.

[0006] The technical solution adopted by this utility model to solve its technical problem is an easy-to-clean oil filter, comprising: The oil filter body, the cylindrical protective housing, the cover plate installed on the top of the protective housing, and the rear cover that is detachably connected to the bottom of the protective housing; The cover plate has oil inlet and outlet channels, with a check valve installed at its inner center and a sealing ring installed on its outer side. The internal space of the protective shell houses the filter element, and a bypass valve is also provided in its bottom area. A compression spring for support is installed between the inside of the rear cover and the bottom of the bypass valve.

[0007] A magnetic sealing mechanism is provided at the interface between the protective shell and the rear cover. This mechanism consists of an annular magnet embedded in an annular groove on the bottom end face of the protective shell, and a flexible metal sealing gasket fixed to the mating surface of the rear cover. The two components attract each other magnetically to achieve a sealed connection.

[0008] The filter element is a multi-layered composite structure that can be completely extracted from the protective casing. Its core is filter paper serving as the fine filtration layer, surrounded by a stainless steel filter mesh serving as the coarse filtration layer. The stainless steel filter mesh is fixedly connected to the internal filter paper as a single module via connectors at both ends. The upper end of the filter element is connected to a check valve inside the cover plate via a connector.

[0009] A drive interface is installed at the center of the outer wall of the rear cover. This interface contains a cam quick-lock mechanism, specifically a radially movable cam and a switch that controls the cam's movement. An external drive shaft has an annular groove at one end that mates with the cam, and the other end is used to connect to an external drive device. This drive shaft transmits torque through its connection to the filter element's central structure.

[0010] The beneficial effects of this utility model are as follows: It provides an easy-to-clean oil filter, which achieves rapid opening and closing of the housing through an innovative magnetic sealing mechanism, greatly improving the convenience of disassembly and maintenance; it adopts a detachable multi-layer composite filter element structure, which allows the coarse filter unit to be repeatedly cleaned and the fine filter unit to be easily replaced, significantly reducing maintenance costs and material consumption; at the same time, it integrates a centrifugal self-cleaning function, which can efficiently remove deep-seated impurities attached to the filter media, restore filtration performance, and extend the service life of the filter element. This design comprehensively improves the ease of use, maintenance economy, and filtration reliability of oil filters, effectively solving the problems of cumbersome disassembly and assembly, incomplete cleaning, and high maintenance costs of traditional products. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the easy-to-clean oil filter of this utility model; Figure 2 This is a schematic diagram of the internal structure of the easy-to-clean oil filter of this utility model; Figure 3 This is an exploded view of the easy-to-clean oil filter of this utility model; Figure 4 An exploded view of the magnetic sealing mechanism of the easy-to-clean oil filter according to this utility model; Figure 5 This is a schematic diagram of the drive interface of the oil filter that is easy to clean according to this utility model.

[0012] Explanation of reference numerals in the attached figures: 100. Oil filter body; 110. Sealing ring; 120. Cover plate; 130. Check valve; 140. Filter element; 141. Filter paper; 142. Filter screen; 143. Connecting parts; 150. Protective shell; 160. Rear cover; 170. Bypass valve; 180. Magnetic sealing mechanism; 181. Magnet; 182. Metal gasket; 183. Fixing parts; 200, drive interface; 210, male connector; 211, switch; 212, cam; 220, drive shaft; 221, groove. Detailed Implementation

[0013] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0014] like Figures 1 to 5 As shown in the figure, this utility model provides an easy-to-clean oil filter that enables quick disassembly and assembly, convenient replacement, and efficient centrifugal self-cleaning of the filter element 140. It mainly includes an oil filter body 100, a magnetic sealing mechanism 180, a detachable multi-layer filter element 140, and a drive interface 200 integrated on the rear cover 160. The components work together through a specific mechanical structure and magnetic sealing method to ensure a balance between oil filtration efficiency and ease of maintenance. In one specific embodiment, the oil filter body 100 constitutes the core functional unit and external support structure of the device. It is cylindrical in shape and is enclosed by a cylindrical protective shell 150, a top cover 120, and a bottom rear cover 160 to form a sealed filter chamber. The cover 120 integrates an oil inlet channel and an oil outlet channel, and a check valve 130 is located at its inner center to prevent oil backflow after the engine is turned off, thus avoiding dry friction during engine startup. A sealing ring 110 is located on the outer side of the cover 120, away from the check valve 130, to ensure the overall sealing of the oil filter when installed on the engine mount. The protective shell 150 houses the filter element 140, and its bottom is connected to the rear cover 160 via a magnetic sealing mechanism 180 for quick opening and closing. Inside the protective housing 150, a bypass valve 170 is also installed. When the filter element 140 becomes clogged, causing an excessive oil pressure difference, the bypass valve 170 opens to ensure that engine oil can continue to be supplied to the engine, thus providing a safety protection function. To prevent the filter element 140 from axially shifting within the protective housing 150, a compression spring is installed between the bottom of the bypass valve 170 and the interior of the rear cover 160. This spring provides stable axial support for the filter element 140, effectively ensuring the stability of the filter element 140 during operation. In one specific embodiment, the magnetic sealing mechanism 180 is the core of this quick-assembly and disassembly system, and is located at the connection surface between the protective shell 150 and the rear cover 160. This mechanism mainly consists of a ring magnet 181 and a flexible sealing metal gasket 182. The ring magnet 181 is securely embedded in the annular groove on the bottom end face of the protective shell 150 via a fastener 183. Correspondingly, the flexible sealing metal gasket 182 is fixed to the mating surface of the rear cover 160. When it is necessary to close the rear cover 160, simply bring it close to the bottom of the protective shell 150. The strong magnetic force generated by the ring magnet 181 will automatically attract the flexible sealing metal gasket 182 and guide the rear cover 160 to precise alignment. Under the pressure of the magnetic force, the flexible sealing metal gasket 182 undergoes a slight deformation, thereby achieving a reliable seal between the protective shell 150 and the rear cover 160. This magnetic sealing design eliminates the need for traditional threaded screwing or complex snap-fit ​​operations, achieving true "press to close, force to open," making the filter's opening and closing operation extremely simple and quick. In one specific embodiment, the filter element 140 is the core of the device's filtration system. It is a multi-layered composite structure that can be completely disassembled and is housed inside the protective shell 150. Its upper end is connected to the check valve 130 via a connector 143. The filter element 140 comprises two filtration units from the inside out: its core is a fine filtration layer made of traditional filter paper 141, used to intercept small particles in the engine oil; its outer periphery is a coarse filtration layer made of a stainless steel filter screen 142 with a larger mesh size, used to pre-filter out larger metal shavings and impurities in the engine oil. The filter screen 142 is fixed to the outer periphery of the filter paper 141 via connectors 143 at both ends, together forming a structurally sound and functionally distinct detachable filter element 140 module. When maintenance is required, the user only needs to open the magnetically sealed rear cover 160 to pull the entire filter element 140 out of the protective shell 150. In routine maintenance, if only the coarse filter layer is clogged, the stainless steel filter screen 142 can be cleaned separately; if the fine filter layer reaches the end of its lifespan, the entire filter element 140 module can be replaced. The maintenance strategy is flexible and cost-effective. To achieve deep cleaning of the filter element 140, this invention integrates a centrifugal self-cleaning system. The power input point of this system is a drive interface 200 located at the center of the outer wall of the rear cover 160. The drive interface 200 is fixed to the rear cover 160 by a flange and contains a cam 212 quick-locking mechanism. Specifically, the male end face of the drive interface 200 has a switch 211 and a radially movable cam 212. One end of the drive shaft 220 has an annular groove 221 on its circumferential surface to transition into the cam 212. When the drive shaft 220 is inserted into the male end 210, pushing the switch 211 causes the cam 212 to retract. After the drive shaft 220 is fully inserted, releasing the switch 211 causes the cam 212 to spring into the groove 221 of the drive shaft 220 under the action of an internal spring, achieving rapid axial and circumferential simultaneous fixation between the two. The other end of the drive shaft 220 is externally connected to a manual crank or a drive motor. When the filter element 140 needs cleaning, a special cleaning agent can be introduced into the filter, and then an external power source can be connected through the drive interface 200 to drive the drive shaft 220 to rotate at high speed. The drive shaft 220 transmits torque to the entire filter element 140 through the connecting structure at the center of the filter element 140, causing it to rotate at high speed. The resulting centrifugal force thoroughly removes impurities stubbornly attached to the filter paper 141 and the stainless steel filter screen 142, achieving efficient and deep cleaning. The working process of this utility model: The working process of an easy-to-clean oil filter is divided into a normal filtration stage and a disassembly and maintenance stage; Normal filtration stage: During engine operation, engine oil, under the pressure of the oil pump, enters the oil filter body 100 from the oil inlet of the cover plate 120. The oil first pushes the check valve 130 open, entering the annular filtration chamber formed by the protective shell 150 and the rear cover 160. Subsequently, driven by pressure, the oil flows from the outside to the inside through the stainless steel filter screen 142 and filter paper 141 of the filter element 140. In this path, larger metal shavings and impurities in the oil are intercepted by the stainless steel filter screen 142, while finer particles and colloidal substances are effectively captured by the filter paper 141. The filtered clean oil passes through the filter paper 141 and enters the clean oil chamber in the center of the filter element 140, returning to the engine lubrication system through the oil outlet of the cover plate 120. If the filter element 140 becomes severely clogged due to long-term use, causing the pressure difference between the inlet and outlet oil ports to exceed the set value, the bypass valve 170 integrated in the protective housing 150 will automatically open to establish a bypass oil circuit, ensuring that the oil supply is uninterrupted, thereby providing continuous safety protection for the engine. Disassembly and Maintenance Phase: When cleaning or replacing filter element 140 is required, the maintenance phase begins. The operator can easily pull the rear cover 160 off the protective shell 150 without tools, allowing the annular magnet 181 of the magnetic sealing mechanism 180 to separate from the flexible sealing metal gasket 182, enabling quick opening. Subsequently, the entire multi-layer composite filter element 140 can be directly removed from the protective shell 150 for maintenance. Maintenance is flexible: the stainless steel filter screen 142 can be cleaned and reused separately, or the entire filter element 140 module, including the filter paper 141, can be directly replaced. For stubborn stains, deep centrifugal cleaning is possible: after reinstalling the filter element 140 and closing the rear cover 160, connect an external drive device (manual or electric) through the drive interface 200 at the center of the rear cover 160, inject cleaning agent into the filter, and then start the device. The drive shaft 220 transmits torque to the filter element 140 via the quick-lock mechanism of the cam 212 (the engagement of the cam 212 and the groove 221), causing it to rotate at high speed. The resulting powerful centrifugal force thoroughly removes deeply embedded impurities from the filter media, achieving efficient cleaning. After maintenance, the rear cover 160 can be quickly and accurately reset using magnetic adsorption, restoring the seal and preparing for the next filtration cycle. The above-disclosed embodiments are merely specific examples of this utility model. However, the embodiments of this utility model are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. An easy-to-clean oil filter, comprising an oil filter body (100), the oil filter body (100) comprising a cylindrical protective shell (150), a cover plate (120) fixed to the top of the protective shell (150), and a rear cover (160) detachably connected to the bottom of the protective shell (150), the cover plate (120) being provided with an oil inlet channel, an oil outlet channel, and a check valve (130) located inside thereon, the protective shell (150) housing a filter element (140), characterized in that: A magnetic sealing mechanism (180) is provided at the connection between the protective shell (150) and the rear cover (160). The magnetic sealing mechanism (180) includes an annular magnet (181) embedded in the bottom end face of the protective shell (150) and a flexible sealing metal gasket (182) fixed to the mating surface of the rear cover (160). The filter element (140) is a multi-layer structure that can be pulled out as a whole. It includes filter paper (141) as a fine filtration layer and a stainless steel filter screen (142) sleeved around the filter paper (141) as a coarse filtration layer. The stainless steel filter screen (142) is connected by a connector (143). It is fixedly connected to the filter paper (141); the center of the outer wall of the back cover (160) is provided with a drive interface (200), the male end (210) of the drive interface (200) is provided with a radially movable cam (212) and a switch (211) for controlling the movement of the cam (212); one end of a drive shaft (220) is provided with an annular groove (221) that cooperates with the cam (212), and the other end of the drive shaft (220) is used to connect an external drive device; the drive shaft (220) transmits torque to the filter element (140) through the connection structure at the center of the filter element (140).

2. The easy-to-clean oil filter according to claim 1, characterized in that: The annular magnet (181) is fitted into the annular groove on the bottom end face of the protective shell (150) by means of a fastener (183).

3. The easy-to-clean oil filter according to claim 1, characterized in that: A sealing ring (110) is provided on the outer side of the cover plate (120).

4. The easy-to-clean oil filter according to claim 1, characterized in that: A bypass valve (170) is provided inside the protective shell (150).

5. The easy-to-clean oil filter according to claim 4, characterized in that: A compression spring is provided between the bottom of the bypass valve (170) and the interior of the rear cover (160).

6. The easy-to-clean oil filter according to claim 1, characterized in that: The upper end of the filter element (140) is connected to the check valve (130) via a connector (143).

7. The easy-to-clean oil filter according to claim 1, characterized in that: The drive interface (200) is fixed to the rear cover (160) by a flange.

8. The easy-to-clean oil filter according to claim 1, characterized in that: The cam (212) and the groove (221) are in a transition fit.

9. The easy-to-clean oil filter according to claim 1, characterized in that: The drive shaft (220) transmits torque to the filter element (140) through the connection structure at the center of the filter element (140).

10. The easy-to-clean oil filter according to claim 1, characterized in that: The stainless steel filter screen (142) is fixed to the periphery of the filter paper (141) by the connectors (143) at the upper and lower ends.

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