Oil filter with high sealing performance

Abstract

The oil filter with the high sealing performance comprises a shell, a net cylinder is arranged in the shell, a filter paper cylinder is connected to the outer wall of the net cylinder in a sleeved mode, a folding structure is formed on the surface of the filter paper cylinder in a surrounding mode, an end cover is arranged at an opening of the shell, and an outlet structure is formed in the middle of the end cover. At least part of the outlet structure extends into the net cylinder, a plurality of inlet holes are formed in the surface of the end cover in a surrounding mode, and non-return assemblies are arranged at the inlet holes; the non-return assembly comprises a first shell communicated with the inlet hole, a first spring is arranged in the first shell, a sealing plate is arranged at the end of the first spring, and a plurality of holes are formed in the outer wall of the first shell; the problems that in the prior art, a filter check valve plate is often an elastic rubber sheet, rubber is prone to aging after being used for a long time, the deformability of the filter check valve plate is reduced, and backflow cannot be effectively avoided are solved.

Description

Technical Field

[0001] The utility model relates to an oil filter, in particular to a high-sealability oil filter. Background Art

[0002] The oil filter is mainly used to remove impurities such as dust, metal particles, carbon deposits and soot particles in the oil to protect the engine. For example, the Chinese patent with patent number CN202022509424.4 provides an oil filter, including a housing, a filter assembly is provided inside the housing, and a cover plate is provided at the bottom thereof, a check valve plate is provided on the side of the cover plate close to the filter assembly, the filter assembly includes a filter column and a filter paper surrounded by the outside of the filter column, a filter plate is provided in the filter column, and a plurality of filter plates are evenly arranged in the vertical direction, a magnet ring plate is provided on the inside of the housing, and the magnet ring plate is provided on the outside of the filter paper, an oil outlet connected to the filter column is provided in the middle of the cover plate, and an oil inlet is provided on the outside of the oil outlet; such as the oil filter in the prior art, the inner side of the cover plate is often provided with a check valve plate, and the check valve plate can prevent the oil from flowing back after the engine stops, but the check valve plate in the prior art is often an elastic rubber plate, and the rubber is easy to age after long-term use, resulting in a decrease in its deformation ability, thereby failing to effectively prevent backflow. Utility Model Content

[0003] The utility model aims to provide a high-sealing oil filter, which solves the problem that the filter check valve sheet in the prior art is often an elastic rubber sheet, and the rubber is prone to aging after long-term use, resulting in a decrease in its deformation ability, thereby failing to effectively avoid backflow.

[0004] In order to achieve the above-mentioned object, the utility model provides a high-sealability oil filter, the high-sealability oil filter comprising a shell, a mesh cylinder is arranged in the shell, a filter paper cylinder is sleeved on the outer wall of the mesh cylinder, a folded structure is formed around the surface of the filter paper cylinder, an end cover is arranged at the opening of the shell, an outlet structure is formed in the middle of the end cover, the outlet structure at least partially extends into the mesh cylinder, a plurality of inlet holes are arranged around the surface of the end cover, and a non-return assembly is arranged at the inlet hole;

[0005] The anti-return assembly includes a first shell connected to the inlet hole, a first spring is arranged in the first shell, a sealing plate is arranged at the end of the first spring so that the sealing plate can cover the inlet hole, and a plurality of holes are formed on the outer wall of the first shell.

[0006] Preferably, a first O-ring is provided on the side of the sealing plate.

[0007] Preferably, an annular extension is formed at both ends of the net cylinder, a ring is provided on the surface of the annular extension, and a plurality of support members are arranged at intervals on the inner wall of the ring, so that the support members are at least partially located in the folding structure.

[0008] Preferably, a bypass valve assembly is provided on the annular extension;

[0009] The bypass valve assembly includes a second shell arranged on the annular extension portion, a hole is formed at the bottom of the second shell, a second spring is arranged in the second shell, and a plugging head is arranged at the end of the second spring, so that the plugging head can cover the hole in the middle of the annular extension portion.

[0010] Preferably, a compression spring is provided between the annular extension portion and the top of the housing.

[0011] Preferably, a second O-ring is provided between the outlet structure and the net cylinder.

[0012] Beneficial effect: The utility model provides a high-sealability oil filter, the high-sealability oil filter comprises an outer shell, a mesh cylinder is arranged in the outer shell, a filter paper cylinder is sleeved on the outer wall of the mesh cylinder, a folded structure is formed around the surface of the filter paper cylinder, an end cover is arranged at the opening of the outer shell, an outlet structure is formed in the middle of the end cover, the outlet structure at least partially extends into the mesh cylinder, a plurality of inlet holes are arranged around the surface of the end cover, a non-return assembly is arranged at the inlet hole; the non-return assembly comprises a first shell connected to the inlet hole, a first spring is arranged in the first shell, and a first spring is arranged at the end of the first spring The sealing plate enables the sealing plate to cover the inlet hole, and a plurality of holes are formed on the outer wall of the first shell; different from the rubber check valve plate in the prior art, the oil filter provided by the utility model is provided with a non-return assembly on the inner side of the end cover, and when the engine oil flows in, it can squeeze the sealing plate in the first shell, and after the sealing plate moves up, the engine oil enters the outer shell from the holes on the first shell, and then is filtered by the filter paper cylinder and discharged from the inside of the mesh cylinder and the outlet structure, completing the filtering of the engine oil. Compared with the rubber check valve plate in the prior art, the non-return assembly in the utility model has a long service life, will not be deformed, and can avoid the backflow problem.

[0013] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0015] Figure 1 This is a structural diagram of a high-sealability oil filter provided by the utility model;

[0016] Figure 2 This is a first cross-sectional view of the high-sealability oil filter provided by the utility model;

[0017] Figure 3 yes Figure 2 A magnified view of part A;

[0018] Figure 4 This is a second cross-sectional view of the high-sealability oil filter provided by the utility model;

[0019] Figure 5 It is a cross-sectional view of a high-sealability oil filter stop-return component provided by the utility model.

[0020] Description of Reference Numerals

[0021] 1-housing; 2-mesh cylinder; 3-filter paper cylinder; 4-end cover; 5-export structure; 6-check assembly; 61-first shell; 62-hole; 63-sealing plate; 64-first spring; 7-annular extension; 8-second spring; 9-second shell; 10-compression spring; 11-sealing head; 12-ring; 13-support member. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] like Figure 1-5As shown: The utility model provides a high-sealability oil filter, which includes an outer shell 1, a mesh tube 2 is arranged in the outer shell 1, a filter paper tube 3 is sleeved on the outer wall of the mesh tube 2, a folded structure is formed around the surface of the filter paper tube 3, an end cover 4 is arranged at the opening of the outer shell 1, an outlet structure 5 is formed in the middle of the end cover 4, and the outlet structure 5 at least partially extends into the mesh tube 2, a plurality of inlet holes are arranged around the surface of the end cover 4, and a non-return assembly 6 is arranged at the inlet hole; the non-return assembly 6 includes a first shell 61 connected to the inlet hole, a first spring 64 is arranged in the first shell 61, a sealing plate 63 is arranged at the end of the first spring 64, so that the sealing plate 63 can cover the inlet hole, and a plurality of holes 62 are formed on the outer wall of the first shell 61. Unlike the rubber check valve plates in the prior art, the oil filter provided by the utility model has a check assembly on the inner side of the end cover. When the engine oil is introduced, it can squeeze the sealing plate in the first shell. After the sealing plate moves up, the engine oil enters the outer shell from the holes on the first shell, and then is filtered by the filter paper cylinder and discharged from the inside of the mesh cylinder and the outlet structure to complete the filtering of the engine oil. Compared with the rubber check valve plates in the prior art, the check assembly in the utility model has a long service life, will not deform, and can avoid the backflow problem.

[0024] In a preferred embodiment of the present invention, in order to improve the sealing performance between the sealing plate and the first housing, a first O-ring is provided on the side of the sealing plate 63 .

[0025] In a preferred embodiment of the present invention, an annular extension 7 is formed at both ends of the net cylinder 2, a ring 12 is provided on the surface of the annular extension 7, and a plurality of support members 13 are provided at intervals on the inner wall of the ring 12, so that the support members 13 are at least partially located in the folded structure. The filter paper cylinder here is formed by enclosing folded filter paper, and the support members can open the external folded structure so that it can achieve a better filtering effect.

[0026] In a preferred embodiment of the utility model, a bypass valve assembly is provided on the annular extension 7; the bypass valve assembly includes a second housing 9 provided on the annular extension 7, a hole is formed at the bottom of the second housing 9, a second spring 8 is provided in the second housing 9, and a plugging head 11 is provided at the end of the second spring 8, so that the plugging head 11 can cover the hole in the middle of the annular extension 7. When too much debris adheres to the filter paper cylinder so that the oil cannot pass through it, in order to ensure the normal circulation of the oil, the oil can squeeze the plugging head, so that the plugging head moves down, thereby entering the inside of the mesh cylinder, avoiding the interruption of the oil supply and affecting the engine operation.

[0027] In a preferred embodiment of the present invention, in order to enable the net cylinder to be compressed inside the shell, a compression spring 10 is provided between the annular extension portion 7 and the top of the shell 1 .

[0028] In a preferred embodiment of the present utility model, in order to ensure the sealing performance between the outlet structure 5 and the net cylinder 2 , a second O-ring is provided between the outlet structure 5 and the net cylinder 2 .

[0029] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0030] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0031] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A high-sealing oil filter, characterized in that: The high-sealability oil filter comprises a shell (1), a mesh cylinder (2) is arranged inside the shell (1), a filter paper cylinder (3) is sleeved on the outer wall of the mesh cylinder (2), a folded structure is formed around the surface of the filter paper cylinder (3), an end cover (4) is arranged at the opening of the shell (1), an outlet structure (5) is formed in the middle of the end cover (4), the outlet structure (5) at least partially extends into the mesh cylinder (2), a plurality of inlet holes are arranged around the surface of the end cover (4), and a non-return assembly (6) is arranged at the inlet hole; The anti-return assembly (6) comprises a first shell (61) connected to the inlet hole, a first spring (64) is arranged in the first shell (61), a sealing plate (63) is arranged at the end of the first spring (64), so that the sealing plate (63) can cover the inlet hole, and a plurality of holes (62) are formed on the outer wall of the first shell (61).

2. The high-sealability oil filter according to claim 1, characterized in that: A first O-ring is provided on the side of the sealing plate (63).

3. The high-sealability oil filter according to claim 1, characterized in that: An annular extension part (7) is formed at both ends of the net cylinder (2), a ring (12) is arranged on the surface of the annular extension part (7), and a plurality of support members (13) are arranged at intervals on the inner wall of the ring (12), so that the support members (13) are at least partially located in the folding structure.

4. The high-sealability oil filter according to claim 3, characterized in that: A bypass valve assembly is provided on the annular extension portion (7); The bypass valve assembly comprises a second shell (9) arranged on the annular extension portion (7), a hole being formed at the bottom of the second shell (9), a second spring (8) being arranged in the second shell (9), and a plugging head (11) being arranged at the end of the second spring (8), so that the plugging head (11) can cover the hole in the middle of the annular extension portion (7).

5. The high-sealability oil filter according to claim 4, characterized in that: A compression spring (10) is provided between the annular extension portion (7) and the top of the housing (1).

6. The high-sealability oil filter according to claim 1, characterized in that: A second O-ring is provided between the outlet structure (5) and the net cylinder (2).

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