Engine oil diffusion filter element

Abstract

The invention belongs to the field of engine oil filter elements, and particularly relates to an engine oil diffusion filter element which comprises a framework, an upper end cover, a lower end cover and a filter paper layer, multiple groups of diffusion supports are further arranged between the framework and the filter paper layer and uniformly arranged around the framework, and the diffusion supports are supported at wave crests of the wavy filter paper layer. Inclined plane supporting parts are further arranged on the two sides of the flow dispersing bracket; and the inclined plane supporting parts are positioned on the two sides of the flow dispersing bracket and are used for supporting inclined planes on the two sides of a filter paper layer wave crest. When the outer side of the filter paper layer is filled with engine oil, the diffusion support is inserted into the fold of the filter paper layer to support the wavy structure of the filter paper layer, the situation that the diffusion capacity is weakened due to overlapping of the filter paper layers on the two sides is avoided, the diffusion support also plays a role in stabilizing the structure of the filter paper layer, deviation and rotation are avoided, and the service life of the filter paper layer is prolonged. And the service life of the filter element is prolonged.

Description

Technical Field

[0001] The present invention belongs to the field of engine oil filters, and particularly relates to an engine oil diffusing and filtering filter element. Background Art

[0002] During the operation of the engine, the engine oil filter plays a crucial role. Its core task is to filter impurities in the engine oil, ensure the cleanliness of the engine oil, and thus ensure the stable and efficient operation of the engine. The engine oil filter generally consists of a filter element and a housing. The filter element mostly uses multiple layers of filter paper or synthetic materials, and relies on tiny pores to intercept large particle impurities. However, with the continuous operation of the engine, impurities such as metal debris in the engine oil continuously 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 decrease significantly. To cope with the clogging of the filter element, existing filters usually set up a bypass valve. When the filter element is clogged, the bypass valve opens, allowing unfiltered engine oil to directly enter the oil circuit to maintain the 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 along with the engine oil, accelerating the wear of internal parts of the engine and greatly shortening the service life of the engine. Therefore, the startup of the bypass valve will be avoided as much as possible during use. In addition, during the use of the filter paper of the filter element, affected by factors such as oil pressure force or installation, after the permeability of the filter paper layer decreases and the passing resistance increases after being used for a period of time, the filter paper is prone to deviation due to the extrusion of the oil fluid, resulting in uneven dispersion of the filter paper. The aggregated and extruded filter paper not only further reduces the oil fluid permeability, but also is more likely to cause impurity accumulation and blockage, thereby further shortening the service life of the filter element. Summary of the Invention

[0003] In order to solve the problems existing in the above-mentioned prior art, the present invention provides an engine oil diffusing and filtering filter element. By adding a diffusing support, the filter paper layer of the filter element is fixed to avoid the situation of deviation and accumulation.

[0004] The specific technical solution adopted by the present invention is as follows: An engine oil diffusing and filtering filter element includes a skeleton, an upper end cover, a lower end cover and a filter paper layer. The skeleton is clamped between the upper end cover and the lower end cover. The skeleton is in a cylindrical structure. The filter paper layer is folded back and forth into a wave shape and wrapped around the outside of the skeleton. A channel communicating the inside and outside of the skeleton is provided on the side wall of the skeleton. The oil fluid filtered by the filter paper layer enters the inner cavity of the skeleton through this channel. A diffusing support is further provided between the skeleton and the filter paper layer. A plurality of groups of diffusing supports are evenly arranged around the skeleton. The diffusing supports support at the wave crests of the wave-shaped filter paper layer. Inclined plane support parts are further provided on both sides of the diffusing support. The inclined plane support parts are located on both sides of the diffusing support and are used to support the two inclined planes on both sides of the wave crest of the filter paper layer.

[0005] The described diffuser support further includes a diffuser support part, which is in a strip structure and fixed between the cover plates of the upper end cover and the lower end cover. There are connecting pieces arranged at intervals between the diffuser support part and the inclined surface support part. The inclined surface support part is in a sheet structure and is fixed on both sides of the diffuser support part by means of the connecting pieces. The inclined surface support part has the freedom of elastic swing relative to the diffuser support part by means of the connecting pieces.

[0006] The diffuser support part and the inclined surface support part are integrally bent and formed. The diffuser support part is arc-shaped and supports at the wave crest formed by the folding of the filter paper layer. There is a gap between the wave crest of the filter paper layer and the arc surface of the diffuser support part by means of its crease. There are also channels for the flow of oil liquid arranged on the arc surface of the diffuser support part.

[0007] The described connecting pieces include a first elastic piece and a second elastic piece, both of which are 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, and the arch height of the first elastic piece is greater than that of the second elastic piece.

[0008] There is also a paper storage structure folded into a sawtooth shape at the wave trough of the filter paper layer. This paper storage structure is located between the end of the adjacent inclined surface support part and the wave trough of the filter paper layer. The paper storage structure forms a closed structure by being squeezed by the adjacent inclined surface support parts.

[0009] The described diffuser support includes a first support and a second support. The first support and the second support are arranged back to back, and both include a vertical surface support part fixedly connected to the skeleton. There is also an elastic swing connection formed between the vertical surface support part and the inclined surface support part by means of the connecting pieces.

[0010] The first support and the second support are arranged back to back at intervals, and the first support and the second support are staggered at intervals from top to bottom.

[0011] The first support and the second support are integrally formed with the skeleton and are bent and formed by using the remaining materials cut on the skeleton to form channels.

[0012] The beneficial effects of the present invention are: The diffuser 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 diffuser support is inserted into the crease 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.

[0013] The diffuser support part is welded and fixed to the upper end cover and the lower end cover. The connecting pieces are arranged at intervals between the diffuser support part and the inclined surface support part, forming channels for the passage of oil liquid and avoiding hindering the flow of oil liquid.

[0014] The angle between the inclined support parts on both sides is 40° - 60°, making the wave surface of the filter layer wider. When the permeability of the filter layer decreases, due to the pressure difference of the oil inside and outside the frame, the filter layer squeezes the inclined support part, reducing its opening angle, further exposing the cleaner filter surface at the bottom of the filter layer, improving the oil dispersion efficiency and delaying the start of the bypass valve.

[0015] There is a gap between the diffuser support part and the crest of the filter paper layer, so that the oil can penetrate smoothly from the filter surface at the crest, and the channel on the arc surface of the diffuser support part allows the clean oil that penetrates to enter the skeleton.

[0016] The first elastic sheet and the second elastic sheet are of different lengths, and after being bent, they form a triangular structure, so that the inclined support part is supported, forming a stable cantilever state. As the filter layer is used, the internal and external pressure difference increases, the squeezing force on the inclined support part increases, and the first elastic sheet and the second elastic sheet are bent in the opposite direction. When the first elastic sheet pops out from the other side of the second elastic sheet, the inclined support part is pushed in the opposite direction, fully exposing the filtering surface of the valley bottom part.

[0017] The root of the first elastic sheet is thickened to ensure full utilization of the metal elasticity, so that the first elastic sheet has a larger twisting and deformation space when folding and reversing, and is easy to bend to a state of approximately the same length as the second elastic sheet, so as to facilitate reversal. After folding and reversing, the inclined support part will remain in the folded state until the next replacement of the filter element, so as to improve the response speed of oil filtration.

[0018] With the help of the set paper storage structure, more filter paper area can be placed in the same size, thereby extending the oil filter element replacement cycle and improving the oil filtration efficiency.

[0019] The folding structure provided extends the length of the filter paper, so that the filter paper can be close to the frame plane after being folded and unfolded, thereby being supported and avoiding being scattered.

[0020] 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.

[0021] 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

[0022] Figure 1 This is a schematic diagram of the structure of the present invention installed in the filter; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 is Figure 2 a schematic diagram of the middle cross-section; Figure 4 is Figure 3 an enlarged schematic diagram of part A in; Figure 5 a schematic diagram after the diffuser support part is folded; Figure 6 a schematic diagram of the diffuser support in Embodiment 1; Figure 7 a cross-sectional schematic diagram of the diffuser support in Embodiment 2; Figure 8 a schematic diagram of the diffuser support in Embodiment 2; In the drawings, 1 is the skeleton, 2 is the upper end cover, 3 is the lower end cover, 4 is the filter paper layer, 5 is the inclined plane support part, 6 is the diffuser support part, 7 is the first elastic sheet, 8 is the second elastic sheet, 9 is the paper storage structure, 10 is the first support, 11 is the second support, and 12 is the vertical surface support part. Detailed implementation manners

[0023] The present invention will be further described below in conjunction with the drawings and specific embodiments: Specific Embodiment 1, as shown in Figure 1 , Figure 2 and Figure 3 , Figure 4 shown, the present invention is an oil diffuser 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 reciprocally folded into a wave shape and wrapped around the outside 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 filtered by the filter paper layer 4 enters the inner cavity of the skeleton 1 through this channel. A diffuser support is further provided between the skeleton 1 and the filter paper layer 4. A plurality of groups of diffuser supports are evenly arranged around the skeleton 1. The diffuser supports are supported at the wave crests of the wave-shaped filter paper layer 4. Inclined plane support parts 5 are further provided on both sides of the diffuser support. The inclined plane support parts 5 are located on both sides of the diffuser support and are used to support the two inclined planes on both sides of the wave crest of the filter paper layer 4.

[0024] When the present invention is in use, it is the same as the use method of a traditional filter element. By being installed in the housing 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.

[0025] In the present invention, by adding a diffuser support, when the outside of the filter paper layer 4 is filled with engine oil, due to the pressure difference inside and outside the skeleton 1, the filter paper layer 4 is squeezed between the skeleton 1 and the diffuser support, and the diffuser support is inserted into the creases of the filter paper layer 4, which not only supports the wavy structure of the filter paper layer 4, preventing the filter paper layers 4 on both sides from overlapping and weakening the diffusing ability, but also stabilizes the structure of the filter paper layer 4, preventing deviation and rotation, and contributing to improving the service life of the filter element.

[0026] Furthermore, as Figure 6 shown, the diffuser support further includes a diffuser support portion 6. The diffuser support portion 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. There are connecting pieces arranged at intervals between the diffuser support portion 6 and the inclined surface support portion 5. The inclined surface support portion 5 is in a sheet structure and is fixed on both sides of the diffuser support portion 6 by means of the connecting pieces. The inclined surface support portion 5 has the freedom of elastic swinging relative to the diffuser support portion 6 by means of the connecting pieces.

[0027] The filter paper layer 4 is constrained outside the diffuser support and the skeleton 1 by the flanges of the upper end cover 2 and the lower end cover 3. The provided diffuser support portion 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 diffuser support portion 6 and the inclined surface support portion 5 to form a channel for the oil liquid to pass through, avoiding hindering the flow of the oil liquid. As Figure 4 shown, the included angle between the inclined surface support portions 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 skeleton 1, the filter layer squeezes the inclined surface support portion 5, causing the opening angle of the inclined surface support portion 5 to decrease, further exposing the relatively clean filtering surface at the bottom of the filter layer valley, improving the engine diffusing efficiency and delaying the activation of the bypass valve.

[0028] Furthermore, the diffuser support portion 6 and the inclined surface support portion 5 are integrally bent and formed. The diffuser support portion 6 is arc-shaped and supports at the wave crest formed by the folding of the filter paper layer 4. There is an interval between the wave crest of the filter paper layer 4 and the arc surface of the diffuser support portion 6 by means of its crease. There is also a channel for the oil liquid to flow through on the arc surface of the diffuser support portion 6.

[0029] There is an interval between the provided diffuser support portion 6 and the inside of the wave crest of the filter paper layer 4, which enables the oil liquid to smoothly penetrate through the filtering surface at the wave crest, and the channel provided on the arc surface of the diffuser support portion 6 also allows the penetrated clean oil liquid to enter the skeleton 1.

[0030] Furthermore, as Figure 4 and Figure 5As shown, the connecting piece includes a first elastic piece 7 and a second elastic piece 8 both having 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 that of the second elastic piece 8.

[0031] As Figure 4 shown, since the first elastic piece 7 and the second elastic piece 8 are of different lengths, an approximately triangular structure is formed after bending, so that the inclined surface support portion 5 is supported, forming a Figure 4 relatively stable cantilever state. As the filter layer is used, the internal and external pressure difference gradually increases, and the extrusion force on the inclined surface support portion 5 by the inclined surface part of the filter layer increases, causing the first elastic piece 7 and the second elastic piece 8 to be bent in the reverse 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 surface support portion 5 is squeezed and the first elastic piece 7 pops out from the other side of the second elastic piece 8, the inclined surface support portion 5 is pushed in the reverse direction, as Figure 5 shown, and at this time the filter surface at the bottom of the valley is fully exposed.

[0032] 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 the side of the diffuser support portion 6 is thickened, so that the root thickness is greater than the thickness of the cantilever end, that is, the connection end of the first elastic piece 7 and the inclined surface support portion 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 the reversal. And after the folding and reversal occur, until the next filter element replacement, the inclined surface support portion 5 will remain in the folded state to improve the response speed of the engine oil filtration.

[0033] Furthermore, as Figure 4 and Figure 5 shown, a paper storage structure 9 folded into a serrated shape is further provided at the trough of the filter paper layer 4. The paper storage structure 9 is located between the end of the adjacent inclined surface support portion 5 and the trough of the filter paper layer 4. The paper storage structure 9 forms a closed structure by the extrusion of the adjacent inclined surface support portion 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 engine oil filter element and improving the engine oil filtration efficiency. And the provided folding structure extends the length of the filter paper, facilitating the filter paper to be close to the plane of the skeleton 1 after being unfolded by folding, so as to be supported and avoid being washed away.

[0034] Specific Embodiment 2. Compared with Embodiment 1, the main difference in this embodiment lies in the fixing structure of the diffuser support. The diffuser support in this embodiment is as Figure 7 and Figure 8As shown, it includes 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 portion 12 fixedly connected to the skeleton 1. An elastic swing connection is also formed between the vertical support portion 12 and the inclined support portion 5 by means of a connecting piece, and this elastic swing connection is the same as that in Embodiment 1. In this embodiment, the diffuser bracket is formed by folding the warped surplus material generated when making a channel on the skeleton 1 by stamping. When assembling, 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.

[0035] The first bracket 10 and the second bracket 11 are integrally formed with the skeleton 1 and are formed by bending the surplus material sheared to form a channel on the skeleton 1.

[0036] 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 portions 12 to form a fixing structure of the vertical support portion 12. Moreover, the first bracket 10 and the second bracket are arranged staggered from top to bottom, so that a mesh structure is formed on the side of the skeleton 1, and the filtered engine oil enters the skeleton 1 through the mesh holes.

Claims

1. An oil bulk filter element, comprising a frame (1), an upper end cover (2), a lower end cover (3) and a filter paper layer (4), wherein the frame (1) is clamped between the upper end cover (2) and the lower end cover (3), the frame (1) is a cylindrical structure, the filter paper layer (4) is reciprocatingly folded into a wave shape and wrapped around the outer side of the frame (1), and a channel connecting the inside and outside of the frame (1) is provided on the side wall of the frame (1), and the oil filtered by the filter paper layer (4) enters the inner cavity of the frame (1) through the channel, characterized in that: A diffuser support is also provided between the skeleton (1) and the filter paper layer (4); a plurality of diffuser supports are evenly arranged around the skeleton (1); the diffuser support is supported at the wave crest of the wavy filter paper layer (4); inclined support portions (5) are also provided on both sides of the diffuser support; the inclined support portions (5) are located on both sides of the diffuser support and are used to support the inclined surfaces on both sides of the wave crest of the filter paper layer (4).

2. The oil bulk filter element according to claim 1, characterized in that: The diffuser bracket further comprises a diffuser support portion (6), the diffuser support portion (6) being in a strip-shaped structure and being fixed between the cover plates of the upper end cover (2) and the lower end cover (3), a connecting sheet being arranged between the diffuser support portion (6) and the inclined support portion (5), the inclined support portion (5) being in a sheet-shaped structure and being fixed to both sides of the diffuser support portion (6) by means of the connecting sheet, and the inclined support portion (5) having the freedom to swing elastically relative to the diffuser support portion (6) by means of the connecting sheet.

3. The oil dispersion filter element according to claim 2, characterized in that: The diffuser support portion (6) and the inclined support portion (5) are integrally bent and formed, and the diffuser support portion (6) is supported in an arc shape at the crest formed by folding the filter paper layer (4), and the crest of the filter paper layer (4) is spaced apart from the arc surface of the diffuser support portion (6) by means of its folding line, and a channel for oil liquid circulation is also provided on the arc surface of the diffuser support portion (6).

4. The oil bulk filter element according to claim 2, characterized in that: The connecting piece comprises a first elastic piece (7) and a second elastic piece (8) both of which are arc-shaped structures; the first elastic piece (7) is longer than the second elastic piece (8); a plurality of groups of the first elastic pieces (7) and the second elastic pieces (8) are arranged at intervals; and the arch height of the first elastic piece (7) is greater than the arch height of the second elastic piece (8).

5. The oil bulk filter element according to claim 4, characterized in that: A paper storage structure (9) folded into a sawtooth shape is also provided at the wave valley of the filter paper layer (4); the paper storage structure (9) is located between the end of the adjacent inclined support portion (5) and the wave valley of the filter paper layer (4); the paper storage structure (9) is squeezed by the adjacent inclined support portion (5) to form a closed structure.

6. The oil bulk filter element according to claim 1, characterized in that: The diffuser support comprises a first support (10) and a second support (11), the first support (10) and the second support (11) being arranged back to back, and both comprising a vertical support portion (12) fixedly connected to the frame (1), and an elastic swing connection is also formed between the vertical support portion (12) and the inclined support portion (5) by means of a connecting sheet.

7. The oil bulk filter element according to claim 6, characterized in that: The first bracket (10) and the second bracket (11) are arranged back to back and spaced apart, and the first bracket (10) and the second bracket (11) are arranged in an interlaced manner from top to bottom.

8. The oil dispersion filter element according to claim 6, characterized in that: The first bracket (10) and the second bracket (11) are integrally formed with the frame (1), and are formed by bending the remaining material of the frame (1) that is cut to form the channel.

Images