Engine oil filter element with replaceable filter paper

Abstract

The utility model discloses a filter paper replaceable type engine oil filter element which comprises a center leakage cylinder and end ring covers detachably installed at the two ends of the center leakage cylinder, the center leakage cylinder is sleeved with folded filter paper, a plurality of L-shaped locking plates are arranged at the end of the center leakage cylinder in the circumferential direction, and L-shaped locking grooves rotationally locked with the L-shaped locking plates are formed in the inner ends of the end ring covers. A plurality of counter bores extending to the L-shaped lock groove are formed in the end ring cover, screw holes coaxial with the counter bores are formed in the outer end of the L-shaped lock plate, and screws matched with the screw holes can be connected into the screw holes in a screwed mode after penetrating through the counter bores. The engine oil filter element with the replaceable filter paper is stable in structure, and the filter paper can be detached and replaced.

Description

Technical Field

[0001] This utility model relates to oil filters, specifically to a replaceable filter paper oil filter element. Background Technology

[0002] The oil filter is a crucial component of the engine lubrication system. Its main function is to filter impurities, metal shavings, dust, oxides, and other harmful substances from the engine oil, keeping the oil clean, extending its lifespan, and reducing wear on engine parts. An oil filter typically consists of a housing, filter paper, and an inner cylinder. Engine oil passes through the filter paper from the outside into the inner cylinder and then into the engine.

[0003] Chinese patent CN214887290U discloses a replaceable filter type oil filter, including a rigid metal shell, a filter element body, an oil inlet check valve, an oil filter cover, and a sealing ring. The sealing ring is fixedly connected to one end of the rigid metal shell. The oil filter cover is fixedly connected inside the rigid metal shell behind the sealing ring. The oil inlet check valve is fixedly connected behind the oil filter cover. The filter element body is fixedly connected behind the oil inlet check valve. A filter paper body is fixedly connected to the filter element body.

[0004] The replaceable cartridge oil filter's filter element body includes a central tube, filter element through holes, connecting plates, a filter paper groove, and a filter element oil outlet. The central tube has several filter element through holes, and the filter paper body is fixed to the outer ring of the central tube. Oil filtered by the filter paper body enters the central tube through the filter element through holes. Connecting plates are fixedly connected to both ends of the central tube. The central tube and connecting plates are fixedly connected and difficult to disassemble. When the filter paper body's flowability deteriorates after long-term use, it cannot be replaced individually. Utility Model Content

[0005] The purpose of this invention is to provide a replaceable filter paper oil filter element. This replaceable filter paper oil filter element has a stable structure and the filter paper can be disassembled and replaced.

[0006] To achieve the above objectives, this utility model provides a replaceable filter paper oil filter element, which includes a central filter cylinder and end ring caps detachably installed at both ends of the central filter cylinder. The central filter cylinder is covered with folded filter paper. Multiple L-shaped locking plates are provided circumferentially at the ends of the central filter cylinder. The inner end of the end ring cap is provided with an L-shaped locking groove that rotates and locks with the L-shaped locking plates. Multiple countersunk holes extending to the L-shaped locking grooves are provided on the end ring cap. The outer end of the L-shaped locking plate is provided with a screw hole coaxial with the countersunk hole. A screw matching the screw hole passes through the countersunk hole and can be screwed into the screw hole.

[0007] Preferably, the inner side of the end ring cover is provided with a settling groove that can fit and accommodate the end of the central inlet cylinder, and the L-shaped locking groove is provided at the bottom of the settling groove.

[0008] Preferably, extension cylinders are fixed to the inner walls of both ends of the central drain cylinder, the outer ends of the extension cylinders extend to the outside of the central drain cylinder, and the outer walls of the extension cylinders are fixed to the inner side of the L-shaped lock plate.

[0009] Preferably, the central leak cylinder includes an inner cylinder disposed on the inner side and an outer cylinder disposed on the outer side; both the inner cylinder and the outer cylinder are provided with multiple leak holes.

[0010] Preferably, the two ends of the folded filter paper are provided with annular reinforcing plates.

[0011] Preferably, 3-6 countersunk holes are provided along the circumference of the end ring cap.

[0012] Preferably, the screw is a Phillips head or a flathead countersunk screw.

[0013] According to the above technical solution, this utility model provides a replaceable filter paper oil filter element, which includes a central filter cylinder and end ring caps detachably installed at both ends of the central filter cylinder. The central filter cylinder is covered with folded filter paper. Multiple L-shaped locking plates are arranged circumferentially at the ends of the central filter cylinder. The inner end of the end ring cap is provided with an L-shaped locking groove that rotates and locks with the L-shaped locking plates. Multiple countersunk holes extending to the L-shaped locking grooves are provided on the end ring cap. The outer end of the L-shaped locking plate is provided with a screw hole coaxial with the countersunk hole. A screw matching the screw hole can be screwed into the screw hole after passing through the countersunk hole.

[0014] The replaceable filter paper oil filter element has the following advantages: 1. The removable end ring caps at both ends allow for easy installation or removal of the central filter cylinder and folded filter paper, facilitating independent replacement of the filter element's components; 2. The L-shaped locking plate and L-shaped locking groove are rotated and locked together, and after locking, screws are threaded through the countersunk holes and screwed into the screw holes, achieving a detachable connection between the central filter cylinder and the end ring caps.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a replaceable filter paper oil filter element;

[0018] Figure 2This is an exploded structural diagram of a preferred embodiment of a replaceable filter paper oil filter element;

[0019] Figure 3 yes Figure 2 A schematic diagram of the structure after removing the folded filter paper;

[0020] Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0021] Figure 5 yes Figure 4 A magnified view of region A is sufficient for illustration;

[0022] Figure 6 This is a schematic diagram of the overall structure of a preferred embodiment of the central funnel;

[0023] Figure 7 This is a schematic diagram of the overall structure of a preferred embodiment of the end ring cover.

[0024] Explanation of reference numerals in the attached figures

[0025] 1-Central inlet cylinder; 2-End ring cap; 3-Extension cylinder; 4-Screw; 5-Folded filter paper; 6-Annular reinforcing plate; 7-Inlet hole; 8-L-shaped locking plate; 9-Screw hole; 10-L-shaped locking groove; 11-Insertion; 12-Counterhead hole; 13-Outer cylinder; 14-Inner cylinder; 15-Counterhead groove. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0027] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0028] See Figure 1-7 The replaceable filter paper oil filter element shown includes a central filter cylinder 1 and end ring caps 2 detachably installed at both ends of the central filter cylinder 1. The central filter cylinder 1 is covered with folded filter paper 5. Multiple L-shaped locking plates 8 are arranged circumferentially at the ends of the central filter cylinder 1. The inner end of the end ring cap 2 is provided with an L-shaped locking groove 10 that rotates and locks with the L-shaped locking plates 8. Multiple countersunk holes 12 extending to the L-shaped locking grooves 10 are provided on the end ring cap 2. The outer end of the L-shaped locking plate 8 is provided with a screw hole 9 coaxial with the countersunk hole 12. A screw 4 matching the screw hole 9 can be screwed into the screw hole 9 after passing through the countersunk hole 12.

[0029] By implementing the above technical solution, on the one hand, the detachable end ring caps 2 at both ends can facilitate the installation or removal of the central filter cylinder 1 and the folded filter paper 5, making it easy to replace the accessories in the filter element independently; on the other hand, through the rotational locking between the L-shaped locking plate 8 and the L-shaped locking groove 10, after locking, the screw 4 passes through the countersunk hole 12 and is screwed into the screw hole 9, realizing the detachable connection between the central filter cylinder 1 and the end ring cap 2.

[0030] The L-shaped locking plate 8 includes a vertically extending portion and an arc-shaped insert plate connecting the vertically extending portion. The L-shaped locking groove 10 includes a socket 11 that can vertically insert the arc-shaped insert plate, and an arc-shaped slot that communicates with the socket 11 and can rotatably insert the arc-shaped insert plate. The arc-shaped insert plate is inserted from the socket 11 and then rotated into the arc-shaped slot to lock.

[0031] In this embodiment, the inner side of the end ring cover 2 is provided with a recess 15 that can fit and accommodate the end of the central inlet cylinder 1, and the L-shaped locking groove 10 is provided at the bottom of the recess 15. The recess 15 allows the central inlet cylinder 1 to be quickly aligned coaxially with the end ring cover 2, facilitating the insertion of the arc-shaped insert plate into the socket 11.

[0032] In this embodiment, extension cylinders 3 are fixedly connected to the inner walls of both ends of the central drain cylinder 1. The outer ends of the extension cylinders 3 extend to the outside of the central drain cylinder 1, and the outer walls of the extension cylinders 3 are fixedly connected to the inner side of the L-shaped locking plate 8. The extension cylinders 3 can cover the openings on the sides of the L-shaped locking groove 10. The outer walls of the extension cylinders 3 are in contact with the inner side of the L-shaped locking plate 8 and the inner walls of the end ring cap 2.

[0033] In this embodiment, the central leak cylinder 1 includes an inner cylinder 14 disposed on the inner side and an outer cylinder 13 disposed on the outer side; both the inner cylinder 14 and the outer cylinder 13 are provided with multiple leak holes 7. The double-layer structure with planar annular ends reinforces the structure of the central leak cylinder 1.

[0034] In this embodiment, annular reinforcing plates 6 are provided at both ends of the folded filter paper 5. This arrangement improves the stability of the folded filter paper 5. The annular reinforcing plates 6 are made of cardboard with a thickness of 1-2 mm and are glued to the folded filter paper 5.

[0035] In this embodiment, to further provide an arrangement of the countersunk holes 12, 3-6 countersunk holes 12 are provided circumferentially along the end ring cover 2. Naturally, the number of L-shaped locking plates 8 and L-shaped locking grooves 10 corresponds to the number of countersunk holes 12, and they are the same.

[0036] In this embodiment, to further provide a screw 4, the screw 4 is a Phillips head or a flathead countersunk screw. The screw 4 does not protrude from the end ring cap 2 after being tightened.

[0037] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A replaceable filter paper oil filter element, characterized in that, The replaceable filter paper oil filter element includes a central filter cylinder (1) and end ring caps (2) detachably installed at both ends of the central filter cylinder (1). The central filter cylinder (1) is covered with folded filter paper (5). The end of the central filter cylinder (1) is provided with multiple L-shaped locking plates (8) along the circumferential direction. The inner end of the end ring cap (2) is provided with an L-shaped locking groove (10) that rotates and locks with the L-shaped locking plate (8). The end ring cap (2) is provided with multiple countersunk holes (12) extending to the L-shaped locking groove (10). The outer end of the L-shaped locking plate (8) is provided with a screw hole (9) coaxial with the countersunk hole (12). A screw (4) that matches the screw hole (9) can be screwed into the screw hole (9) after passing through the countersunk hole (12).

2. The replaceable filter paper oil filter element according to claim 1, characterized in that, The inner side of the end ring cover (2) is provided with a sink groove (15) that can fit and accommodate the end of the central sluice (1), and the L-shaped locking groove (10) is provided at the bottom of the sink groove (15).

3. The replaceable filter paper oil filter element according to claim 1, characterized in that, Extension cylinders (3) are fixed to the inner walls of both ends of the central funnel (1); The outer end of the extension tube (3) extends to the outside of the central drain tube (1), and the outer wall of the extension tube (3) is fixed to the inner side of the L-shaped lock plate (8).

4. The replaceable filter paper oil filter element according to claim 1, characterized in that, The central sluice (1) includes an inner sluice (14) disposed on the inner side and an outer sluice (13) disposed on the outer side; Both the inner cylinder (14) and the outer cylinder (13) are provided with multiple leakage holes (7).

5. The replaceable filter paper oil filter element according to claim 1, characterized in that, The folded filter paper (5) is provided with annular reinforcing plates (6) at both ends.

6. The replaceable filter paper oil filter element according to claim 1, characterized in that, The countersunk holes (12) are provided in 3-6 circumferential directions along the end ring cover (2).

7. The replaceable filter paper oil filter element according to claim 1, characterized in that, The screw (4) is a cross-head or flathead countersunk screw.

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