An in-box embedded internal bypass return oil filter

Abstract

This utility model discloses an in-tank embedded bypass return oil filter, including a housing. A paper-wound filter element and a folded paper filter element are installed inside the housing. The housing has evenly spaced return oil holes for the paper-wound filter element on its outer side. A first end plate is installed at one end of the housing near the folded paper filter element, and a second end plate is installed at the other end of the housing near the paper-wound filter element. The second end plate has internal threads. This utility model connects to the return oil pipe through the threaded opening, and the entire filter is immersed inside the oil tank, reducing the cost of installing tees and cover plates. The paper-wound filter element improves filtration accuracy, while the folded paper filter element is a high-flow filter element. A bypass valve is installed inside the inner column. The folded paper filter element is glued and secured with clips. The second end plate is ultrasonically welded, ensuring flow rate while improving dirt holding capacity and filtration accuracy.

Description

Technical Field

[0001] This utility model relates to the field of oil filter technology, specifically an in-box embedded internal bypass return oil filter. Background Technology

[0002] Normally, the various components inside the engine are lubricated by engine oil to function properly. However, metal shavings produced during the operation of these components, dust, carbon deposits oxidized at high temperatures, and some moisture will continuously mix into the engine oil. Over time, this will reduce the lifespan of the engine oil and may even affect the normal operation of the engine in severe cases. Therefore, engine oil is typically filtered using an oil filter.

[0003] Existing filters require the installation of tees and covers, which increases the number of product parts, thereby increasing manufacturing costs and assembly difficulties. To address this, we propose an in-box embedded internal bypass return oil filter. Utility Model Content

[0004] The purpose of this utility model is to provide an in-box embedded internal bypass return oil filter to solve the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an in-box embedded internal bypass return oil filter, comprising a housing, wherein a paper-wound filter element and a folded paper filter element are installed inside the housing, and the housing is provided with uniformly distributed paper-wound filter element return oil holes on the outer side of the folded paper filter element, and the housing is provided with a plurality of paper-wound filter element return oil holes on the outer side of the paper-wound filter element, a first end plate is installed at one end of the housing at the folded paper filter element, and a second end plate is installed at one end of the housing at the paper-wound filter element, the second end plate being provided with internal threads.

[0006] Preferably, the outer shell includes an outer shell body, a partition is provided in the middle of the outer shell body, the partition is located between the paper-wound filter element and the folded paper filter element, the partition has an oil return hole for the paper-wound filter element, a second limiting ring is provided at one end of the partition located on the paper-wound filter element, and a third limiting ring is provided at one end of the partition located on the folded paper filter element.

[0007] Preferably, the edge of the partition is provided with annular ribs, the cross-sectional shape of the annular ribs is triangular, and the annular ribs are inserted into the paper filter element.

[0008] Preferably, the partition has a third rib evenly distributed on one side of the paper filter element.

[0009] Preferably, the second end plate includes a second end plate body, one end of which is provided with an annular post, the internal thread is located inside the annular post, the outer side of the annular post is evenly distributed with second ribs, the outer side of the second end plate body is evenly distributed with first ribs, the outer side of the second end plate body is provided with an annular slot at one end of the outer shell, and the outer shell is inserted into the annular slot and fixed by welding.

[0010] Preferably, the first end plate includes a first end plate body, an inner column is provided at one end of the first end plate body, a first limiting ring is provided on the outer side of the inner column of the first end plate body, a positioning notch is provided on the edge of the first end plate body, a positioning plug is provided on the outer shell body to cooperate with the positioning notch, a plug is provided on the first end plate body at the positioning notch, and a plug hole is provided on the outer shell body to cooperate with the plug.

[0011] Preferably, a bypass valve is installed inside the inner column.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the return oil pipe is connected from the threaded port, and the entire filter is immersed inside the oil tank, which reduces the cost of installing tees and cover plates, reduces the number of parts, and improves the ease of assembly; the outer shell is equipped with a paper-wound filter element and a folded paper filter element. The paper-wound filter element improves the filtration accuracy, while the folded paper filter element is a high-flow filter element. A bypass valve is installed in the inner column, and the folded paper filter element is glued and clipped. The second end plate is ultrasonically welded, which improves the dirt holding capacity and filtration accuracy while ensuring the flow rate. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an exploded view of this utility model;

[0016] Figure 3 This is the front view of this utility model;

[0017] Figure 4 This is a utility model Figure 3 Sectional view of AA;

[0018] Figure 5 This is a schematic diagram of the structure of the outer shell of this utility model;

[0019] Figure 6 This is a top view of the outer casing of this utility model;

[0020] Figure 7 This is a utility model Figure 6 Sectional view of BB;

[0021] Figure 8 This is a schematic diagram of the structure of the second end plate of this utility model;

[0022] Figure 9 This is a schematic diagram of the structure of the first end plate of this utility model.

[0023] In the diagram: 1. First end plate; 2. Oil return hole of paper-wound filter element; 3. Outer shell; 4. Second end plate; 5. Paper-wound filter element; 6. Folded paper filter element; 7. Bypass valve; 8. Oil return hole of paper-wound filter element; 11. Main body of first end plate; 12. First limiting ring; 13. Inner column; 14. Positioning notch; 15. Insert block; 31. Main body of outer shell; 32. Third rib; 33. Partition plate; 34. Positioning plug; 35. Insertion hole; 36. Annular rib; 37. Second limiting ring; 38. Third limiting ring; 41. Annular slot; 42. Main body of second end plate; 43. First rib; 44. Annular column; 45. Internal thread; 46. Second rib. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0025] Please see Figure 1-9In this embodiment of the utility model, an in-tank embedded internal bypass return oil filter includes a housing 3. A paper-wound filter element 5 and a folded paper filter element 6 are installed inside the housing 3. The housing 3 has evenly spaced paper-wound filter element return oil holes 2 on the outer side of the folded paper filter element 6. The housing 3 also has multiple paper-wound filter element return oil holes 8 on the outer side of the paper-wound filter element 5. A first end plate 1 is installed at one end of the housing 3 near the folded paper filter element 6, and a second end plate 4 is installed at the other end of the housing 3 near the paper-wound filter element 5. The second end plate 4 has an internal thread 45. A return oil pipe is connected from the threaded opening. The entire filter is immersed inside the oil tank, reducing the cost of installing a tee and cover plate. The housing 3 houses the paper-wound filter element 5 and the folded paper filter element 6. The paper-wound filter element 5 improves filtration accuracy, while the folded paper filter element 6 is a high-flow filter element. A bypass valve 7 is installed inside the inner column 13. The folded paper filter element 6 is glued and secured with clips. The second end plate 4 is ultrasonically welded, ensuring flow rate while improving dirt holding capacity and filtration accuracy.

[0026] The outer shell 3 includes an outer shell body 31. A partition 33 is provided in the middle of the outer shell body 31. The partition 33 is located between the paper-wound filter element 5 and the folded paper filter element 6. The partition 33 has an oil return hole 2 connected to the paper-wound filter element. A second limiting ring 37 is provided at one end of the partition 33 located on the paper-wound filter element 5. A third limiting ring 38 is provided at one end of the partition 33 located on the folded paper filter element 6. An annular rib 36 is provided on the edge of the partition 33. The annular rib 36 has a triangular cross-sectional shape and is inserted into the paper-wound filter element 5. A third protruding rib 32 is evenly distributed on one side of the partition 33 located on the paper-wound filter element 5.

[0027] The second end plate 4 includes a second end plate body 42. One end of the second end plate body 42 is provided with an annular post 44. The internal thread 45 is located inside the annular post 44. The outer side of the annular post 44 is evenly distributed with second ribs 46. The second end plate body 42 is evenly distributed with first ribs 43 on the outer side of the annular post 44. The second end plate body 42 is provided with an annular slot 41 at one end of the outer shell 3. The outer shell 3 is inserted into the annular slot 41 and fixed by welding.

[0028] The first end plate 1 includes a first end plate body 11, an inner column 13 is provided at one end of the first end plate body 11, a bypass valve 7 is installed in the inner column 13, a first limiting ring 12 is provided on the outer side of the first end plate body 11 located on the inner column 13, a positioning notch 14 is provided on the edge of the first end plate body 11, a positioning plug 34 is provided on the outer shell body 31 to cooperate with the positioning notch 14, a plug block 15 is provided on the first end plate body 11 at the positioning notch 14, and a plug hole 35 is provided on the outer shell body 31 to cooperate with the plug block 15.

[0029] The working principle of this utility model is as follows: the return oil pipe is connected from the threaded port, and the entire filter is immersed inside the oil tank, which reduces the cost of installing tees and cover plates; the outer shell 3 is equipped with a paper-wound filter element 5 and a folded paper filter element 6. The paper-wound filter element 5 improves the filtration accuracy, and the folded paper filter element 6 is a high-flow filter element. The bypass valve 7 is installed in the inner column 13. The folded paper filter element 6 is glued and clipped. The second end plate 4 is ultrasonically welded to improve the dirt holding capacity and filtration accuracy while ensuring the flow rate.

[0030] 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. An in-tank, flush-mounted, oil return filter, comprising a housing (3), characterized in that: The outer casing (3) is equipped with a paper-wound filter element (5) and a paper-folding filter element (6). The outer casing (3) is provided with paper-wound filter element oil return holes (2) evenly on the outside of the paper-folding filter element (6). The outer casing (3) is provided with multiple paper-wound filter element oil return holes (8) on the outside of the paper-wound filter element (5). The outer casing (3) is provided with a first end plate (1) at one end of the paper-folding filter element (6). The outer casing (3) is provided with a second end plate (4) at one end of the paper-wound filter element (5). The second end plate (4) is provided with an internal thread (45).

2. An in-tank, insertable, internal bypass, return-oil filter for an engine oil pan as defined in claim 1, wherein: The outer shell (3) includes an outer shell body (31), and a partition (33) is provided in the middle of the outer shell body (31). The partition (33) is located between the paper-wound filter element (5) and the paper-folded filter element (6). The partition (33) has an oil return hole (2) for connecting the paper-wound filter element. A second limiting ring (37) is provided at one end of the partition (33) of the paper-wound filter element (5), and a third limiting ring (38) is provided at one end of the partition (33) of the paper-folded filter element (6).

3. An in-tank, insertable, internal bypass, return-oil filter for an engine oil pan as defined in claim 2, wherein: The edge of the partition (33) is provided with annular ribs (36), the cross-sectional shape of the annular ribs (36) is triangular, and the annular ribs (36) are inserted into the paper filter core (5).

4. The in-box embedded internal bypass return oil filter according to claim 2, characterized in that: The partition (33) has a third rib (32) evenly distributed on one side of the paper filter core (5).

5. An in-tank, insertable, oil bypassing, filter according to claim 1, characterized in that: The second end plate (4) includes a second end plate body (42), one end of which is provided with an annular post (44), the internal thread (45) is located inside the annular post (44), the outer side of the annular post (44) is evenly distributed with second ribs (46), the second end plate body (42) is evenly distributed with first ribs (43) on the outer side of the annular post (44), and the second end plate body (42) is provided with an annular slot (41) at one end of the outer shell (3), and the outer shell (3) is inserted into the annular slot (41) and fixed by welding.

6. An in-tank, insertable, internal bypass, return-oil filter for an engine oil pan according to claim 2, wherein: The first end plate (1) includes a first end plate body (11), an inner column (13) is provided at one end of the first end plate body (11), a first limiting ring (12) is provided on the outer side of the inner column (13) of the first end plate body (11), a positioning notch (14) is provided on the edge of the first end plate body (11), a positioning plug (34) is provided on the outer shell body (31) to cooperate with the positioning notch (14), a plug (15) is provided on the first end plate body (11) at the positioning notch (14), and a plug hole (35) is provided on the outer shell body (31) to cooperate with the plug (15).

7. An in-tank, insertable, oil bypassing, filter according to claim 6, characterized in that: A bypass valve (7) is installed inside the inner column (13).

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