Filter element and filter containing the same

Abstract

A filter element includes a core body, the core body includes an inner tube and an outer tube arranged coaxially, the tube walls of the inner tube and the outer tube are respectively provided with evenly distributed filter holes, a circle of inner filter screen is attached to the outer wall of the inner tube, a circle of outer filter screen is attached to the inner wall of the outer tube, a filter material made of plant fiber containing a low zinc value additive is filled between the outer filter screen and the inner filter screen, and a plurality of annular spacers for separating the filter material are provided between the outer filter screen and the inner filter screen. Since the filter material of the present invention is made of plant fiber, the cost is low, and after adding the low zinc value additive, the filter material can stabilize the physical and chemical indicators of the online lubricating oil for a long time, effectively extending the service life of the online lubricating oil. In addition, the spacer can prevent the filter material from piling up due to gravity, so that the filter element is not easy to be blocked, thereby increasing the service life of the filter element, and there is no need to frequently replace the filter element. In addition, the present invention also provides a filter including the filter element.

Description

Technical Field

[0001] The invention relates to the technical field of automobile filters, in particular to a filter element and a filter containing the filter element. Background Art

[0002] The oil filter plays a very important role in the car's lubrication system. It can filter out impurities such as metal chips, carbon particles, and colloid gradually produced by the oil that are generated during the combustion process of the engine and mixed into the oil, thereby ensuring the normal operation of the engine and increasing the service life of the engine.

[0003] At present, the commonly used oil filter includes a compression spring, filter paper, anti-drain valve, pressure ring, sealing ring, oil inlet, oil outlet, cover plate, filter core center tube support structure, and metal shell. Its core component is a filter core body made of filter paper as filter material and folded structure. Its working principle is: when the oil pump is pumped out from the oil pan, it enters the filter core paper grid surface of the oil filter from the oil inlet of the filter (i.e., multiple punching holes of the threaded cover plate) with a certain pressure, enters the center tube after being filtered by the filter element, and then flows into the main oil channel of the engine from the oil outlet (i.e., the center threaded hole) for lubrication. The filter element of the existing filter is generally a paper structure, which is prone to clogging with the increase of impurities. Generally, the filter needs to be replaced after every 5,000-10,000 kilometers of driving, so the filter replacement is relatively frequent. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a filter element and a filter containing the filter element. The filter material in the filter element is made of plant fiber, so that the filter element is not easy to be blocked and there is no need to replace the filter frequently.

[0005] A filter element, comprising a core body, the core body comprising an inner tube and an outer tube arranged coaxially, the inner tube and the outer tube having evenly distributed filter holes on their walls respectively, a circle of inner filter screen attached to the outer wall of the inner tube, a circle of outer filter screen attached to the inner wall of the outer tube, the mesh density of the outer filter screen is smaller than the mesh density of the inner filter screen, filter material made of plant fiber containing a low zinc value additive is filled between the outer filter screen and the inner filter screen, a plurality of annular spacers for separating the filter material are provided between the outer filter screen and the inner filter screen, the top end cover of the core body is provided with a filter element upper cover, and the bottom end cover of the core body is provided with a filter element lower cover.

[0006] Compared with the prior art, the filter element of the present invention is low-cost because the filter material is made of plant fiber, and after adding a low zinc value additive, the filter material can stabilize the physical and chemical indicators of the online lubricating oil for a long time, effectively extending the service life of the online lubricating oil. In addition, the spacer can prevent the filter material from piling up due to gravity, making the filter element less likely to be blocked, thereby increasing the service life of the filter element and eliminating the need to frequently replace the filter element.

[0007] Furthermore, the diameter of the particles in the plant fibers is smaller than the diameter of the meshes in the outer filter screen and the inner filter screen.

[0008] Furthermore, the plant fiber is one or more of bamboo, miscellaneous wood, rattan, melon vine, jute, thatch, palm fiber, peanut shell, platycodon or straw.

[0009] Furthermore, the wall thickness of the inner tube is greater than the wall thickness of the outer tube.

[0010] Furthermore, both ends of the inner tube, the outer tube, the inner filter screen and the outer filter screen are extended with overlapping edges, and all the overlapping edges are bent between the inner tube and the outer tube and wrap the spacer.

[0011] Furthermore, a plurality of welding points are arranged on the surface of the spacer, and two of the spacers are respectively located at the top and the bottom of the core.

[0012] Furthermore, the inner tube, outer tube, inner filter screen, outer filter screen, spacer, filter element upper cover and filter element lower cover are made of one of metal, alloy or plastic.

[0013] Furthermore, inner sealing rings are respectively provided between the filter element upper cover and the spacer at the top of the core body, and between the filter element lower cover and the spacer at the bottom of the core body, and the inner sealing rings are made of nitrile rubber.

[0014] Furthermore, a relief valve extending toward the interior of the inner tube is provided in the middle of the filter element lower cover, and the relief valve is connected to the filter element lower cover by riveting.

[0015] A filter comprises an outer shell and a filter element, wherein the bottom of the outer shell is connected to the middle part of the lower cover of the filter element via a supporting spring, a threaded cover plate is provided on the top of the outer shell, a check valve is provided between the threaded cover plate and the middle part of the upper cover of the filter element, a fixing plate is provided on the top of the threaded cover plate, and an outer sealing ring is provided on the top of the fixing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the filter in the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the middle filter element;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of the core body;

[0019] Figure 4 for Figure 3 Top view of the core.

[0020] Description of main component symbols:

[0021] Filters 100 shell 10 Filter Elements 11 Core 111 Inner tube 1111 External pipe 1112 Internal filter 1113 External filter 1114 Filter media 1115 Septum 1116 Filter cover 112 Filter lower cover 113 Relief valve 114 Support spring 12 Threaded cover 13 Check valve 14 Fixed plate 15 Outer sealing ring 16

[0022] The following specific implementation manner will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] See also Figures 1 to 3 A filter 100 provided in one embodiment of the present invention includes a housing 10 and a filter element 11, wherein the filter element 11 includes a core body 111, a top end cover of the core body 111 is provided with a filter element upper cover 112, and a bottom end cover of the core body 111 is provided with a filter element lower cover 113.

[0027] The bottom of the outer shell 10 is connected to the middle of the filter element lower cover 113 through a support spring 12, a threaded cover plate 13 is provided on the top of the outer shell 10, a check valve 14 is clamped between the threaded cover plate 13 and the middle of the filter element upper cover 112, a fixing plate 15 is provided on the top of the threaded cover plate 13, and an outer sealing ring 16 is provided on the top of the fixing plate 15.

[0028] It should be noted that, in the present embodiment, the outer sealing ring 16 and the check valve 14 are made of nitrile rubber. Because nitrile rubber is a synthetic rubber made by copolymerization of butadiene and acrylonitrile, in addition to having good oil resistance and aging resistance, it also has good water resistance, air tightness and bonding properties. Therefore, the outer sealing ring 16 and the check valve 14 can have a good sealing effect and a long service life.

[0029] Specifically, in this embodiment, the fixing plate 15 and the housing 10 are made of galvanized sheets, because galvanizing is an economical and effective rust prevention method, which can prevent the surface of the steel plate from being corroded and prolong the service life.

[0030] Furthermore, in this embodiment, the threaded cover plate 13 is made of a pickled plate, because the pickled plate removes the iron oxide scale on the surface through the pickling process, thereby improving the surface quality of the steel.

[0031] See also Figure 2 and Figure 3 The core body 111 includes an inner tube 1111 and an outer tube 1112 which are coaxially arranged. A circle of inner filter screen 1113 is attached to the outer wall of the inner tube 1111, and a circle of outer filter screen 1114 is attached to the inner wall of the outer tube 1112. A filter material 1115 made of plant fiber containing a low zinc value additive is filled between the outer filter screen 1114 and the inner filter screen 1113.

[0032] It should be noted that, in this embodiment, in order to facilitate the passage of lubricating oil, evenly distributed filter holes are respectively provided on the tube walls of the inner tube 1111 and the outer tube 1112. In order to filter impurities, the mesh density of the outer filter 1114 is smaller than the mesh density of the inner filter 1113, and the diameters of the meshes in the outer filter 1114 and the inner filter 1113 are smaller than the diameters of the particles in the plant fibers, so as to prevent the particles in the plant fibers from passing through the outer filter 1114 and the inner filter 1113 under the pressure of the lubricating oil.

[0033] Furthermore, in this embodiment, the plant fiber is processed and synthesized from bamboo. It is understandable that in other embodiments, the plant fiber is one or more of bamboo, miscellaneous wood, rattan, melon vine, jute, thatch, palm clothing, peanut shell, platycodon or straw, because these materials are generally agricultural waste, widely available and low in cost. By adding low zinc value additives to the plant fiber, the filter material 1115 can stabilize the physical and chemical indicators of the online lubricant for a long time, effectively extending the service life of the online lubricant.

[0034] It should be noted that in other embodiments, the filter material 1115 may be made of chemical fibers in addition to plant fibers. For example, the filter material 1115 may be one or more of polypropylene, polyacrylonitrile, polyester, aramid, polyphenylene sulfide, polyamide, PTFE or glass fiber.

[0035] See also Figure 2 and Figure 3 , a plurality of annular spacers 1116 are provided between the outer filter screen 1114 and the inner filter screen 1113 to separate the filter material 1115, wherein two of the spacers 1116 are respectively located at the top and the bottom of the core body 111. It should be noted that, in other embodiments, welding points are provided on the surface of the spacers 1116, and the spacers 1116 and the welding points can prevent the filter material 1115 from piling up due to gravity, so that the filter element 11 is not easily blocked, thereby increasing the service life of the filter element 11.

[0036] See also Figure 4 The wall thickness of the inner tube 1111 is greater than the wall thickness of the outer tube 1112 . After the inner tube 1111 is thickened and strengthened, the mechanical strength of the entire core 11 is increased.

[0037] Furthermore, in this embodiment, the inner tube 1111, the outer tube 1112, the inner filter 1113 and the outer filter 1114 are provided with overlapping edges at both ends, and all overlapping edges are bent between the inner tube 1111 and the outer tube 1112 and wrap the spacer 1116. In order to wrap the spacer 1116, the radial length of the overlapping edges is not less than 5 mm.

[0038] Specifically, in this embodiment, the inner tube 1111, the outer tube 1112, the inner filter screen 1113, the outer filter screen 1114 and the spacer 1116 are made of cold-rolled steel plates or nylon frames, and the filter element upper cover 112 and the filter element lower cover 113 are made of galvanized plates. It should be noted that in other embodiments, the inner tube, the outer tube, the inner filter screen, the outer filter screen, the spacer, the filter element upper cover and the filter element lower cover are made of one of metal, alloy or plastic.

[0039] It should be noted that, in this embodiment, inner sealing rings are respectively provided between the filter element upper cover 112 and the spacer 1116 at the top of the core body 111, and between the filter element lower cover 113 and the spacer 1116 at the bottom of the core body 111. Further, the inner sealing rings are made of nitrile rubber.

[0040] Please refer to Figure 2 A relief valve 114 extending toward the interior of the inner tube 1111 is provided in the middle of the filter element lower cover 113 , and the relief valve 114 is connected to the filter element lower cover 113 by riveting.

[0041] In summary, in the filter element 11 of the present invention, since the filter material 1115 is made of plant fiber, the cost is low, and after adding a low zinc value additive, the filter material 1115 can stabilize the physical and chemical indicators of the online lubricating oil for a long time, effectively extending the service life of the online lubricating oil. In addition, the spacer 1116 can prevent the filter material 1115 from piling up due to gravity, making the filter element 11 less likely to be blocked, thereby increasing the service life of the filter element 11 and eliminating the need to frequently replace the filter element 11.

[0042] The above-mentioned embodiments only express certain implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A filter element, comprising a core body, characterized in that: The core body comprises an inner tube and an outer tube arranged coaxially, the tube walls of the inner tube and the outer tube are respectively provided with filter holes evenly distributed, a circle of inner filter screen is attached to the outer wall of the inner tube, a circle of outer filter screen is attached to the inner wall of the outer tube, the mesh density of the outer filter screen is smaller than the mesh density of the inner filter screen, a filter material made of plant fiber containing a low zinc value additive is filled between the outer filter screen and the inner filter screen, a plurality of annular spacers for separating the filter material are provided between the outer filter screen and the inner filter screen, the top end cover of the core body is provided with a filter element upper cover, and the bottom end cover of the core body is provided with a filter element lower cover; The plant fiber is one or more of bamboo, miscellaneous wood, rattan, melon vine, jute, thatch, palm clothing, peanut shell, platycodon or straw, and the diameter of the particles in the plant fiber is larger than the diameter of the mesh in the outer filter screen and the inner filter screen; Both ends of the inner tube, the outer tube, the inner filter and the outer filter are extended with lap edges, all of which are bent between the inner tube and the outer tube and wrap the septum, and the radial length of the lap edges is not less than 5 mm; A plurality of welding points are arranged on the surface of the spacer, and two of the spacers are respectively located at the top and the bottom of the core.

2. The filter element according to claim 1, characterized in that: The wall thickness of the inner tube is greater than the wall thickness of the outer tube.

3. The filter element according to claim 1, characterized in that: The inner tube, the outer tube, the inner filter screen, the outer filter screen, the spacer, the filter element upper cover and the filter element lower cover are made of one of metal, alloy or plastic.

4. The filter element according to claim 1, characterized in that: Inner sealing rings are respectively arranged between the filter element upper cover and the spacer at the top of the core body, and between the filter element lower cover and the spacer at the bottom of the core body, and the inner sealing rings are made of nitrile rubber.

5. The filter element according to claim 1, characterized in that: A relief valve extending toward the interior of the inner tube is provided in the middle of the filter element lower cover, and the relief valve is connected to the filter element lower cover by riveting.

6. A filter, characterized in that: It comprises a housing and a filter element as claimed in any one of claims 1 to 5, wherein the bottom of the housing is connected to the middle part of the filter element lower cover via a supporting spring, a threaded cover plate is provided on the top of the housing, a check valve is provided between the threaded cover plate and the middle part of the filter element upper cover, a fixing plate is provided on the top of the threaded cover plate, and an external sealing ring is provided on the top of the fixing plate.

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