An engine oil diffusing and filtering filter element

Abstract

The present invention belongs to the field of engine oil filters, and particularly relates to an engine oil diffusing and filtering filter element, which comprises a skeleton, an upper end cover, a lower end cover and a filter paper layer. A diffusing support is further arranged between the skeleton and the filter paper layer. A plurality of groups of diffusing supports are evenly arranged around the skeleton. The diffusing supports are supported at the wave crests of the wavy filter paper layer. Inclined plane support parts are further arranged on both sides of the diffusing supports. The inclined plane support parts are located on both sides of the diffusing supports and are used for supporting the two inclined planes on both sides of the wave crests of the filter paper layer. The diffusing supports of the present invention play a role in supporting and stabilizing the filter paper layer. When the outside of the filter paper layer is filled with engine oil, the diffusing supports are inserted into the creases of the filter paper layer, playing a role in supporting the wavy structure of the filter paper layer, avoiding the weakening of the diffusing ability caused by the overlap of the filter paper layers on both sides, and also playing a role in stabilizing the structure of the filter paper layer, avoiding deviation and rotation, which helps to improve the service life of the filter element.

Description

Technical Field

[0001] The invention belongs to the field of engine oil filter elements, and in particular relates to an engine oil bulk filter element. Background Art

[0002] The oil filter plays a vital role in the operation of the engine. Its core task is to filter impurities in the oil and ensure the cleanliness of the oil, thereby ensuring that the engine can operate stably and efficiently. The oil filter is generally composed of a filter element and a shell. The filter element is mostly made of multi-layer filter paper or synthetic materials, relying on tiny pores to intercept large particles of impurities.

[0003] However, as the engine continues to run, impurities such as metal debris in the oil continue to accumulate on the filter paper of the filter element. When the impurities accumulate to a certain extent, the filter element will become clogged and the flow rate of the filter will be greatly reduced. In order to deal with the clogging of the filter element, the existing filter is usually equipped with a bypass valve. When the filter element is clogged, the bypass valve opens to allow unfiltered oil to directly enter the oil circuit to maintain basic lubrication of the engine. However, this method causes the filtering function of the filter to completely fail, and a large amount of impurities enter the engine with the random oil, accelerating the wear of the internal parts of the engine and greatly shortening the service life of the engine. Therefore, the activation of the bypass valve should be avoided as much as possible during use.

[0004] In addition, during the use of the filter paper of the filter element, due to the influence of oil pressure or installation and other factors, the permeability of the filter paper layer is easily reduced after a period of use, and the resistance increases. Due to the oil squeeze, the filter paper will deviate, resulting in uneven dispersion of the filter paper. The concentrated and squeezed filter paper not only further reduces the oil permeability, but also makes it easier for impurities to accumulate and clog, further shortening the service life of the filter element. Summary of the invention

[0005] In order to solve the above problems in the prior art, the present invention provides an oil dispersion filter element. By adding a dispersion bracket, the filter paper layer of the filter element is fixed to avoid deviation and accumulation.

[0006] The specific technical solution adopted by the present invention is:

[0007] An engine oil diffusing and filtering filter element includes a framework, an upper end cover, a lower end cover and a filter paper layer. The framework is clamped between the upper end cover and the lower end cover. The framework is in a cylindrical structure. The filter paper layer is reciprocally folded into a wavy shape and wrapped around the outside of the framework. A channel communicating the inside and outside of the framework is provided on the side wall of the framework. The oil liquid filtered by the filter paper layer enters the inner cavity of the framework through this channel. A diffusing support is also provided between the framework and the filter paper layer. Multiple groups of diffusing supports are evenly arranged around the framework. The diffusing supports support at the wave crests of the wavy filter paper layer. Inclined plane support parts are also provided on both sides of the diffusing supports. The inclined plane support parts are located on both sides of the diffusing supports and are used to support the two inclined planes on both sides of the wave crests of the filter paper layer.

[0008] The diffusing support further includes a diffusing support part. The diffusing support part is in a strip structure and is fixed between the cover plates of the upper end cover and the lower end cover. Connecting pieces are arranged at intervals between the diffusing support part and the inclined plane support parts. The inclined plane support parts are in a sheet structure and are fixed on both sides of the diffusing support part by means of the connecting pieces. The inclined plane support parts have the freedom of elastic swinging relative to the diffusing support part by means of the connecting pieces.

[0009] The diffusing support part and the inclined plane support parts are integrally bent and formed. The diffusing support part is in an arc shape and supports at the wave crests formed by the folding of the filter paper layer. An interval is formed between the wave crests of the filter paper layer and the arc surface of the diffusing support part by means of its crease. Channels for the flow of oil liquid are also provided on the arc surface of the diffusing support part.

[0010] The connecting pieces include a first elastic piece and a second elastic piece both in an arc structure. The length of the first elastic piece is greater than that of the second elastic piece. Multiple groups of the first elastic piece and the second elastic piece are arranged at intervals. The arch height of the first elastic piece is greater than the arch height of the second elastic piece.

[0011] A paper storage structure folded into a sawtooth shape is also provided at the wave troughs of the filter paper layer. The paper storage structure is located between the ends of adjacent inclined plane support parts and the wave troughs of the filter paper layer. The paper storage structure is formed into a closed structure by being extruded by the adjacent inclined plane support parts.

[0012] The diffusing support includes a first support and a second support. The first support and the second support are arranged back to back. Both include a vertical support part fixedly connected to the framework. An elastic swinging connection is also formed between the vertical support part and the inclined plane support parts by means of the connecting pieces.

[0013] The first support and the second support are arranged back to back at intervals, and the first support and the second support are arranged staggeredly from top to bottom at intervals.

[0014] The first support and the second support are integrally formed with the framework and are bent and formed by using the remaining materials sheared to form channels on the framework.

[0015] The beneficial effects of the present invention are as follows:

[0016] The diffusing support of the present invention has a supporting and stabilizing effect on the filter paper layer. When the outside of the filter paper layer is filled with engine oil, the diffusing support is inserted into the creases of the filter paper layer, playing a supporting role for the wavy structure of the filter paper layer, avoiding the weakening of the diffusing ability caused by the overlap of the filter paper layers on both sides, and also playing a stabilizing role for the structure of the filter paper layer, avoiding deviation and rotation, which helps to improve the service life of the filter element.

[0017] The diffusing support part is fixedly welded to the upper end cover and the lower end cover, and the connecting pieces are arranged at intervals between the diffusing support part and the inclined plane support part, forming a channel for the oil liquid to pass through, avoiding hindering the flow of the oil liquid.

[0018] The included angle between the two inclined plane support parts is 40° - 60°, making the wavy surface of the filter layer relatively wide. When the permeability of the filter layer decreases, due to the pressure difference of the engine oil inside and outside the skeleton, the filter layer squeezes the inclined plane support part, reducing its opening angle, further exposing the relatively clean filtering surface at the bottom of the filter layer valley, improving the engine oil diffusing efficiency and delaying the activation of the bypass valve.

[0019] There is a gap between the diffusing support part and the wave crest of the filter paper layer, enabling the oil liquid to smoothly penetrate through the filtering surface at the wave crest, and the channels on the arc surface of the diffusing support part allow the penetrated clean oil liquid to enter the skeleton.

[0020] The first elastic piece and the second elastic piece have different lengths. After being bent, they form an approximately triangular structure, enabling the inclined plane support part to be supported and forming a stable cantilever state. As the filter layer is used, the pressure difference inside and outside increases, and the extrusion force on the inclined plane support part increases, causing the first elastic piece and the second elastic piece to be bent in the opposite direction. When the first elastic piece pops out from the other side of the second elastic piece, the inclined plane support part is pushed in the opposite direction, fully exposing the filtering surface at the bottom of the valley.

[0021] The root of the first elastic piece is thickened to ensure the full utilization of the metal elasticity, enabling the first elastic piece to have a greater space for torsional deformation during folding and commutation, facilitating bending to a state approximately equal in length to the second elastic piece and facilitating the occurrence of commutation. And after the folding and commutation occur, until the next filter element replacement, the inclined plane support part will remain in the folded state to improve the response speed of the engine oil filtration.

[0022] With the help of the provided paper storage structure, more filter paper area can be placed in the same size, thereby extending the replacement cycle of the engine oil filter element and improving the engine oil filtration efficiency.

[0023] The provided folding structure extends the length of the filter paper, facilitating the filter paper to be close to the skeleton plane after being unfolded from the folding, so as to be supported and avoid being washed away.

[0024] The diffuser bracket is formed by folding the raised excess material produced when the frame is punched to make the channel. During assembly, there is no need to further fix the upper end cover and the lower end cover to the diffuser bracket, which reduces the difficulty of installation and reduces material investment.

[0025] The first bracket and the second bracket are arranged back to back and staggered from top to bottom, so that a mesh structure is formed on the side of the frame, and the filtered engine oil enters the frame through the mesh holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the present invention installed in the filter;

[0027] Figure 2 It is a structural schematic diagram of the present invention;

[0028] Figure 3 for Figure 2 Schematic diagram of the middle cross section;

[0029] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0030] Figure 5 It is a schematic diagram of the diffuser support portion after being folded;

[0031] Figure 6 is a schematic diagram of the diffuser bracket in Example 1;

[0032] Figure 7 is a schematic cross-sectional view of the diffuser bracket in Example 2;

[0033] Figure 8 is a schematic diagram of the diffuser bracket in Example 2;

[0034] In the accompanying drawings, 1. skeleton, 2. upper end cover, 3. lower end cover, 4. filter paper layer, 5. inclined support part, 6. diffuser support part, 7. first elastic sheet, 8. second elastic sheet, 9. paper storage structure, 10. first bracket, 11. second bracket, 12. vertical support part. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0036] Specific embodiment 1, as Figure 1 , Figure 2 and Figure 3 , Figure 4As shown in the figure, the present invention is an oil diffusion and filtration filter element, which includes a skeleton 1, an upper end cover 2, a lower end cover 3 and a filter paper layer 4. The skeleton 1 is clamped between the upper end cover 2 and the lower end cover 3. The skeleton 1 has a cylindrical structure. The filter paper layer 4 is folded back and forth into a wavy shape and sleeved outside the skeleton 1. A channel communicating the inside and outside of the skeleton 1 is provided on the side wall of the skeleton 1. The oil liquid filtered by the filter paper layer 4 enters the inner cavity of the skeleton 1 through this channel. A diffusion support is also provided between the skeleton 1 and the filter paper layer 4. A plurality of groups of diffusion supports are evenly arranged around the skeleton 1. The diffusion supports support at the wave crests of the wavy filter paper layer 4. Inclined surface support parts 5 are also provided on both sides of the diffusion support. The inclined surface support parts 5 are located on both sides of the diffusion support and are used to support the two inclined surfaces of the wave crests of the filter paper layer 4.

[0037] When the present invention is in use, it is the same as the use method of traditional filter elements. By being installed in the shell of the filter, after the filter is filled with engine oil, through the penetration of the filter layer, clean engine oil penetrates into the inner hole of the skeleton 1 and is discharged from the oil drain port.

[0038] By adding a diffusion support in the present invention, when the outside of the filter paper layer 4 is filled with engine oil, due to the pressure difference between the inside and outside of the skeleton 1, the filter paper layer 4 is pressed against the skeleton 1 and the diffusion support. The diffusion support is inserted into the creases of the filter paper layer 4, which not only plays a role in supporting the wavy structure of the filter paper layer 4, preventing the filter paper layers 4 on both sides from overlapping and weakening the diffusion ability, but also plays a role in stabilizing the structure of the filter paper layer 4, preventing deviation and rotation, and helping to improve the service life of the filter element.

[0039] Furthermore, as Figure 6 shown, the diffusion support further includes a diffusion support part 6. The diffusion support part 6 has a strip structure and is fixed between the cover plates of the upper end cover 2 and the lower end cover 3. A connecting piece is arranged at intervals between the diffusion support part 6 and the inclined surface support part 5. The inclined surface support part 5 has a sheet structure and is fixed on both sides of the diffusion support part 6 by means of the connecting piece. The inclined surface support part 5 has a degree of freedom of elastic swing relative to the diffusion support part 6 by means of the connecting piece.

[0040] The filter paper layer 4 is constrained outside the diffusion support and the skeleton 1 by the flanges of the upper end cover 2 and the lower end cover 3. The provided diffusion support part 6 is welded and fixed to the upper end cover 2 and the lower end cover 3. The provided connecting pieces are arranged at intervals between the diffusion support part 6 and the inclined surface support part 5 to form a channel for the oil liquid to pass through, avoiding hindering the flow of the oil liquid. As Figure 4As shown, the included angle between the inclined plane support parts 5 on both sides is 40°-60°, making the wavy surface of the filter layer relatively wide. When the permeability of the filter layer decreases after a period of use, due to the pressure difference of the engine oil inside and outside the framework 1, the filter layer squeezes the inclined plane support parts 5, causing the opening angle of the inclined plane support parts 5 to decrease, further exposing the relatively clean filter surface at the bottom of the filter layer valley, improving the engine oil dissipation efficiency and delaying the activation of the bypass valve.

[0041] Furthermore, the dissipation support part 6 and the inclined plane support part 5 are integrally bent and formed. The dissipation support part 6 is arc-shaped and supports at the wave crest formed by the folding of the filter paper layer 4. There is a gap between the wave crest of the filter paper layer 4 and the arc surface of the dissipation support part 6 by means of its crease. There are also channels for the flow of the liquid on the arc surface of the dissipation support part 6.

[0042] There is a gap between the arranged dissipation support part 6 and the inside of the wave crest of the filter paper layer 4, which enables the oil liquid to smoothly penetrate from the filter surface at the wave crest. Moreover, the channels arranged on the arc surface of the dissipation support part 6 also allow the penetrated clean oil liquid to enter into the framework 1.

[0043] Furthermore, as Figure 4 and Figure 5 shown, the connecting piece includes a first elastic piece 7 and a second elastic piece 8 both in an arc-shaped structure. The length of the first elastic piece 7 is greater than that of the second elastic piece 8. Multiple groups of the first elastic piece 7 and the second elastic piece 8 are arranged at intervals, and the arching height of the first elastic piece 7 is greater than that of the second elastic piece 8.

[0044] As Figure 4 shown, since the first elastic piece 7 and the second elastic piece 8 are of different lengths, they form an approximate triangular structure after being bent, so that the inclined plane support part 5 is supported, forming a relatively stable cantilever state as Figure 4 shown. With the use of the filter layer, the internal and external pressure difference gradually increases, and the extrusion force on the inclined plane support part 5 by the inclined plane part of the filter layer increases, causing the first elastic piece 7 and the second elastic piece 8 to be bent in the opposite direction. At this time, since the length of the first elastic piece 7 is greater than that of the second elastic piece 8, when the inclined plane support part 5 is squeezed and the first elastic piece 7 pops out from the other side of the second elastic piece 8, at this time the inclined plane support part 5 is pushed in the opposite direction, as Figure 5 shown, and at this time the filter surface at the bottom part is fully exposed.

[0045] Since the first elastic piece 7 is slightly longer than the second elastic piece 8 by stamping, in order to ensure the full utilization of the metal elasticity, the root of the first elastic piece 7 on one side of the diffuser support part 6 is thickened so that the root thickness is greater than the thickness of the cantilever end, that is, the connecting end of the first elastic piece 7 and the inclined plane support part 5 is thinner, so that when the first elastic piece 7 and the second elastic piece 8 are folded and reversed, the first elastic piece 7 can have a larger space for torsional deformation, which is convenient for the first elastic piece 7 to be bent to a state approximately equal in length to the second elastic piece 8, facilitating the occurrence of reversal. And after the folding reversal occurs, until the next filter element replacement, the inclined plane support part 5 will remain in the folded state to improve the response speed of oil filtration.

[0046] Further, as Figure 4 and Figure 5 shown, a paper storage structure 9 folded into a zigzag shape is also provided at the trough of the filter paper layer 4. The paper storage structure 9 is located between the end of the adjacent inclined plane support part 5 and the trough of the filter paper layer 4. The paper storage structure 9 forms a closed structure by being squeezed by the adjacent inclined plane support part 5. By means of the provided paper storage structure 9, more filter paper area can be placed in the same size, thereby extending the replacement cycle of the oil filter element and improving the oil filtration efficiency. And the provided folding structure extends the length of the filter paper, which is convenient for the filter paper to be close to the plane of the skeleton 1 after the folding is opened, so as to obtain support and avoid being washed away.

[0047] Specific Embodiment 2, compared with Embodiment 1, the main difference in this embodiment lies in the fixing structure of the diffuser bracket. The diffuser bracket in this embodiment is as Figure 7 and Figure 8 shown, including a first bracket 10 and a second bracket 11. The first bracket 10 and the second bracket 11 are arranged back to back, and both include a vertical support part 12 fixedly connected to the skeleton 1. An elastic swing connection is also formed between the vertical support part 12 and the inclined plane support part 5 by means of a connecting piece, and this elastic swing connection is the same as that in Embodiment 1. In this embodiment, when the diffuser bracket is made on the skeleton 1 through stamping, it is formed by folding the generated upturned waste material. During assembly, there is no need to further fix the upper end cover 2 and the lower end cover 3 to the diffuser bracket, which reduces the installation difficulty and also reduces the material input.

[0048] The first bracket 10 and the second bracket 11 are integrally formed with the skeleton 1 and are formed by bending the waste material sheared to form a channel on the skeleton 1.

[0049] The first bracket 10 and the second bracket 11 are arranged back to back at intervals, and this interval is located between the two vertical support parts 12, forming a fixing structure of the vertical support part 12. And the first bracket 10 and the second bracket are arranged at intervals and staggered from top to bottom, so that a mesh structure is formed on the side of the skeleton 1, and the filtered oil enters the skeleton 1 through the mesh holes.

Claims

1. An engine oil diffusing and filtering filter element, comprising a skeleton (1), an upper end cover (2), a lower end cover (3) and a filter paper layer (4). The skeleton (1) is clamped between the upper end cover (2) and the lower end cover (3). The skeleton (1) is in a cylindrical structure. The filter paper layer (4) is reciprocally folded into a wavy shape and wrapped around the outer side of the skeleton (1). A channel communicating the inside and outside of the skeleton (1) is provided on the side wall of the skeleton (1). The oil liquid filtered by the filter paper layer (4) enters the inner cavity of the skeleton (1) through this channel. It is characterized in that: A flow-dispersing support is also provided between the described framework (1) and the filter paper layer (4). Multiple groups of the flow-dispersing supports are evenly arranged around the framework (1). The flow-dispersing supports are supported at the peaks of the wavy filter paper layer (4). Inclined plane support parts (5) are also provided on both sides of the flow-dispersing supports. The inclined plane support parts (5) are located on both sides of the flow-dispersing supports and are used to support the two inclined planes on both sides of the peak of the filter paper layer (4). The flow-dispersing support also includes a flow-dispersing support part (6). The flow-dispersing support part (6) is in a strip structure and is fixed between the cover plates of the upper end cover (2) and the lower end cover (3). Connecting pieces are arranged at intervals between the flow-dispersing support part (6) and the inclined plane support part (5). The inclined plane support part (5) is in a sheet structure and is fixed to both sides of the flow-dispersing support part (6) by means of the connecting pieces. The inclined plane support part (5) has the freedom of elastic swinging relative to the flow-dispersing support part (6) by means of the connecting pieces.

2. The oil diffusing and filtering filter element according to claim 1, wherein: The flow-dispersing support part (6) and the inclined plane support part (5) are integrally bent and formed. The flow-dispersing support part (6) is in an arc shape and is supported at the peak formed by the folding of the filter paper layer (4). A gap is formed between the peak of the filter paper layer (4) and the arc surface of the flow-dispersing support part (6) by means of its crease. A channel for the flow of the oil liquid is also provided on the arc surface of the flow-dispersing support part (6).

3. The oil diffusion filtration filter element according to claim 1, wherein: The connecting pieces include a first elastic piece (7) and a second elastic piece (8) that are both in an arc structure. The length of the first elastic piece (7) is greater than that of the second elastic piece (8). Multiple groups of the first elastic piece (7) and the second elastic piece (8) are arranged at intervals. The arch height of the first elastic piece (7) is greater than the arch height of the second elastic piece (8).

4. The oil diffusing and filtering filter element according to claim 3, characterized in that: A paper storage structure (9) folded into a sawtooth shape is also provided at the trough of the filter paper layer (4). The paper storage structure (9) is located between the end of the adjacent inclined plane support part (5) and the trough of the filter paper layer (4). The paper storage structure (9) is formed into a closed structure by the extrusion of the adjacent inclined plane support parts (5).

5. The oil diffusion filtration filter element according to claim 1, characterized in that: The flow-dispersing support includes a first support (10) and a second support (11). The first support (10) and the second support (11) are arranged back to back. Both include a vertical support part (12) fixedly connected to the framework (1). An elastic swinging connection is also formed between the vertical support part (12) and the inclined plane support part (5) by means of a connecting piece.

6. The oil diffusion filtration filter element according to claim 5, characterized in that: The first support (10) and the second support (11) are arranged back to back at intervals, and the first support (10) and the second support are arranged at intervals and staggered from top to bottom.

7. A kind of engine oil diffusing and filtering filter element according to claim 5, characterized in that: The first support (10) and the second support (11) are integrally formed with the framework (1) and are bent and formed by using the surplus material obtained by shearing a channel on the framework (1).

Images