Multi-stage diesel oil filter element with separation flow channels on end face

Abstract

The utility model relates to a multi-stage diesel oil filter element with separation runners on the end face, and belongs to the technical field of diesel oil filters, the multi-stage diesel oil filter element comprises a filter element body, a first filter layer is arranged on the outer side of the filter element body, and a second filter layer is arranged in the filter space; the end cover comprises an upper end cover and a lower end cover which are respectively arranged at the upper end and the lower end of the filter element body in a covering manner, the upper surface of the upper end cover is concave downwards to form a separation flow channel which extends from the center of the upper end cover to the edge of the upper end cover, and the separation flow channel is configured to be capable of driving dirty oil to obliquely flow out from the edge of the upper end cover. According to the filter element, dirty oil is driven to obliquely flow out from the edge of the upper end cover through the separation flow channel, so that solid particles in the dirty oil are captured by the filter tank body under the action of centrifugal force, and then the dirty oil is subjected to two-stage filtration through the first filter layer and the second filter layer which are arranged on the outer side and the inner side of the filter element body respectively; the particle filtering efficiency of the filter is improved, and the service life of the filter element is prolonged.

Description

Technical Field

[0001] This utility model relates to a multi-stage diesel filter element with a separation flow channel on the end face, belonging to the technical field of diesel filter. Background Technology

[0002] The fuel filter is an indispensable and critical component of the internal combustion engine's fuel system. It consists of a filter canister and a filter element installed within it. Its primary function is to filter solid particles and moisture from the fuel, protecting the engine's fuel injection system from contamination and damage. With continuous advancements in engine technology, the precision requirements for fuel systems are becoming increasingly stringent, especially for modern diesel engines where fuel cleanliness is paramount. Solid particles and moisture in the fuel accelerate the wear of critical components such as fuel injectors and fuel pumps, leading to decreased engine performance, increased fuel consumption, and even malfunctions. Therefore, the filtration efficiency and lifespan of the fuel filter directly affect the engine's performance and reliability.

[0003] In recent years, due to increased environmental concerns, more and more filters on the market are adopting environmentally friendly filter elements. This means that only the internal filter components need to be replaced during maintenance, protecting the environment while saving on maintenance costs. However, because modern vehicles have more compact layouts, traditional two-stage filters take up a lot of space. As user demands increase, more and more users want to reduce the frequency of filter replacements during vehicle use. Furthermore, traditional fuel filters typically use filter paper or fiber materials as the filter medium, removing solid particles from the fuel through physical interception. However, this filtration method has certain limitations: on the one hand, the pore size of the filter medium limits the filtration accuracy. While excessively small pores can improve filtration efficiency, they can lead to increased pressure drop in the filter element, affecting fuel flow. On the other hand, traditional filter elements have limited effectiveness in filtering fine particles and moisture, especially in highly polluted environments, where they are prone to clogging and have a shorter lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage diesel filter element with a separation channel on the end face to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage diesel filter element with a separation flow channel on its end face, the multi-stage diesel filter element comprising:

[0006] A filter element body has a filtration space inside it, a first filtration layer is provided on the outside of the filter element body, and a second filtration layer is provided inside the filtration space.

[0007] The end cap includes an upper end cap and a lower end cap respectively covering the upper and lower ends of the filter element body. A separation flow channel is formed by recessing downward from the upper surface of the upper end cap and extending from the center of the upper end cap to the edge of the upper end cap. The separation flow channel is configured to drive dirty oil to flow out obliquely from the edge of the upper end cap.

[0008] Furthermore, the separation channel is arc-shaped.

[0009] Furthermore, the separation channels are provided in six groups, and the six groups of separation channels are arranged at equal intervals along the circumference of the upper end cover.

[0010] Furthermore, a dirty oil inlet is formed extending from the center of the upper surface of the upper cover toward the direction away from the filter element body, and the separation channel is connected to the dirty oil inlet.

[0011] Furthermore, a sintered copper structure for discharging gas from the dirty oil inlet end is provided on the side wall of the dirty oil inlet end.

[0012] Furthermore, a clean oil outlet is provided inside the dirty oil inlet, and an upper sealing ring is provided between the dirty oil inlet and the clean oil outlet.

[0013] Furthermore, the upper surface of the clean oil outlet end is provided with an exhaust hole for discharging gas from the clean oil end, which is connected to the filter space. The exhaust hole has a conical structure.

[0014] Furthermore, a positioning buckle that can be detachably connected to the filter tank is formed by extending outward in the circumferential direction of the upper end cover.

[0015] Furthermore, a lower sealing ring is provided circumferentially on the lower end cover.

[0016] Furthermore, the first filter layer includes a first filter medium for filtering solid particles, and the second filter layer includes a filter medium for filtering water particles and a filter screen disposed inside the filter medium.

[0017] The beneficial effects of this utility model are as follows: This application provides a separation channel on the upper surface of the upper end cover, and configures the separation channel to drive dirty oil to flow obliquely out from the edge of the upper end cover, so that solid particles in the dirty oil are captured by the filter tank under the action of centrifugal force, and the dirty oil is filtered in two stages by the first filter layer and the second filter layer respectively set on the outer and inner sides of the filter element body, thereby improving the particle filtration efficiency of the filter. At the same time, it reduces the solid particles that need to be filtered by the first filter layer, saves maintenance costs, and improves the service life of the filter element.

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a multi-stage diesel filter element with a separation channel on the end face, as shown in an embodiment of this application.

[0020] Figure 2 for Figure 1 Schematic diagram of the upper and middle end caps;

[0021] Figure 3 for Figure 1 A schematic diagram of the middle filter layer. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, in this utility model, unless otherwise explicitly specified and limited, "on" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium.

[0026] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] Please refer to Figures 1 to 2 The multi-stage diesel filter element (hereinafter referred to as "multi-stage diesel filter element") with a separation flow channel 23 on the end face shown in one embodiment of this application includes a filter element body 10 and a cover body installed at both ends of the filter element body 10. The multi-stage diesel filter element is installed in a filter tank.

[0028] A filtration space is formed inside the filter element body 10. A first filter layer 11 is provided on the outside of the filter element body 10, and a second filter layer is provided inside the filtration space. The filter element body 10 is cylindrical and has flow holes 14 formed on its side to allow diesel fuel to flow from the outside of the filter element body 10 to the inside of the filter element body 10.

[0029] The end caps include an upper end cap 20 and a lower end cap 30, which are respectively installed on the upper and lower ends of the filter element body 10. A separation channel 23 is formed by recessing downward from the upper surface of the upper end cap 20, extending from the center of the upper end cap 20 to its edge. The separation channel 23 is configured to drive dirty oil to flow obliquely out from the edge of the upper end cap 20. The lower surface of the end cap of the filter tank abuts against the upper surface of the upper end cap 20, so that dirty oil flows only from within the separation channel 23. The upper end cap 20 is provided with an outlet end for discharging filtered diesel fuel.

[0030] In one embodiment, the separation channel 23 is arc-shaped. This arc-shaped design, while altering the direction of the dirty oil flow, maximizes the flow of the dirty oil, thereby providing sufficient centrifugal force to throw solid particles onto the inner wall of the filter tank.

[0031] In one embodiment, six sets of separation channels 23 are provided, and the six sets of separation channels 23 are arranged at equal intervals along the circumference of the upper end cover 20. This arrangement facilitates the rapid passage of dirty oil. The number of separation channels 23 can be set according to the diameter of the multi-stage diesel filter element, and is not specifically limited here.

[0032] In one embodiment, a dirty oil inlet end 27 is formed extending from the center of the upper surface of the upper end cover 20 toward the direction away from the filter element body 10, and the separation channel 23 communicates with the dirty oil inlet end 27. By providing the dirty oil inlet end 27, it is convenient to receive dirty oil, and at the same time, it is convenient to disperse the dirty oil into each separation channel 23.

[0033] In one embodiment, a sintered copper structure 22 for discharging gas from the dirty oil inlet 27 is provided on the sidewall. Sintered copper is a porous material made by powder metallurgy. By providing the sintered copper structure 22 on the sidewall of the dirty oil inlet 27, it is convenient to discharge the gas accumulated at the dirty oil inlet 27.

[0034] In one embodiment, a clean oil outlet 28 is provided inside the dirty oil inlet 27, and an upper sealing ring 21 is provided between the dirty oil inlet 27 and the clean oil outlet 28. By providing the upper sealing ring 21 between the dirty oil inlet 27 and the clean oil outlet 28, the dirty oil inlet 27 and the clean oil outlet 28 are isolated, thereby preventing dirty oil from leaking to the clean oil outlet 28.

[0035] In one embodiment, an exhaust port 26 for discharging gas from the clean oil outlet is provided on the upper surface of the clean oil outlet end, which communicates with the filter space. The exhaust port 26 has a conical structure and a small diameter. The cross-section of the exhaust port 26 decreases from the filter space towards the outside of the filter space, so that the gas in the filter space can be discharged into the clean oil outlet end through the exhaust port 26, avoiding a long air section in the oil outlet pipe that could cause the engine to stall or have difficulty starting.

[0036] In one embodiment, a positioning buckle 24 extends outward in the circumferential direction of the upper end cover 20 and is detachably connected to the filter tank. The positioning buckle 24 facilitates the circumferential positioning of the multi-stage diesel filter element. In addition, filter element removal buckles 25 are symmetrically arranged on the upper end cover 20 to facilitate the removal and replacement of the filter element.

[0037] In one embodiment, a lower sealing ring 31 is provided circumferentially on the lower end cover 30. The lower sealing ring 31 is sealed to the inner wall of the filter tank to prevent dirty oil from leaking between the lower end cover 30 and the inner wall of the filter tank, thereby ensuring the cleanliness of the filtered diesel oil.

[0038] Referring to Figure 3, in one embodiment, the first filter layer 11 includes a first filter medium for filtering solid particles, and the second filter layer includes a filter medium 12 for filtering water particles and a filter screen 13 disposed inside the filter medium. The first filter medium is meltblown fiber and glass fiber, and the water filter medium 12 is glass fiber and polyethylene terephthalate fiber, both of which are existing technologies and will not be described in detail here.

[0039] With the above configuration, this multi-stage diesel filter element includes two stages of filtration. The first stage is particulate filtration, comprising a separation channel 23 and a first filter layer 11. Solid particles in the diesel fuel are captured by the inner wall of the filter tank under centrifugal force, while uncaptured solid particles are intercepted by the first filter layer 11. Thus, the first stage of filtration allows for more thorough interception of solid particles in dirty oil, improving the efficiency of particulate filtration. Simultaneously, the capture of some solid particles by the inner wall of the tank alleviates the burden of the first filter layer 11 on solid particle containment, thereby extending the filter element's lifespan. The second stage is water separation filtration, comprising a water separation zone composed of a filter medium 12 and a filter screen 13. The filter medium 12 causes water particles in the dirty oil to aggregate, forming large droplets for gravity separation. Unseparated water particles are filtered by the filter screen 13, forming a second interception, thereby achieving water-oil separation.

[0040] This application provides a separation channel on the upper surface of the top cover, and configures the separation channel to drive dirty oil to flow obliquely out from the edge of the top cover. This allows solid particles in the dirty oil to be captured by the filter tank under centrifugal force. The dirty oil is then filtered in two stages by a first filter layer and a second filter layer respectively located on the outer and inner sides of the filter element body. This improves the particle filtration efficiency of the filter, reduces the amount of solid particles that need to be filtered by the first filter layer, saves maintenance costs, and increases the service life of the filter element.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-stage diesel filter element with a separation flow channel on its end face, characterized in that, The multi-stage diesel filter element includes: A filter element body has a filtration space inside it, a first filtration layer is provided on the outside of the filter element body, and a second filtration layer is provided inside the filtration space. The end cap includes an upper end cap and a lower end cap respectively covering the upper and lower ends of the filter element body. A separation flow channel is formed by recessing downward from the upper surface of the upper end cap and extending from the center of the upper end cap to the edge of the upper end cap. The separation flow channel is configured to drive dirty oil to flow out obliquely from the edge of the upper end cap.

2. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 1, characterized in that, The separation channel is arc-shaped.

3. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 2, characterized in that, The separation channels are provided in six groups, and the six groups of separation channels are arranged at equal intervals along the circumference of the upper end cover.

4. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 3, characterized in that, A dirty oil inlet is formed extending from the center of the upper surface of the upper end cover toward the direction away from the filter element body, and the separation channel is connected to the dirty oil inlet.

5. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 4, characterized in that, A sintered copper structure for discharging gas from the dirty oil inlet end is provided on the side wall of the dirty oil inlet end.

6. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 4, characterized in that, The dirty oil inlet is provided with a clean oil outlet, and an upper sealing ring is provided between the dirty oil inlet and the clean oil outlet.

7. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 6, characterized in that, The upper surface of the clean oil outlet end is provided with an exhaust hole for discharging gas from the clean oil end, which is connected to the filter space. The exhaust hole has a conical structure.

8. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 1, characterized in that, A positioning buckle that can be detachably connected to the filter tank is formed by extending outward in the circumferential direction of the upper end cover.

9. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 1, characterized in that, A lower sealing ring is provided around the lower end cover.

10. The multi-stage diesel filter element with a separation flow channel on the end face as described in claim 1, characterized in that, The first filter layer includes a first filter medium for filtering solid particles, and the second filter layer includes a filter medium for filtering water particles and a filter screen disposed inside the filter medium.

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