Oil gas filter for automobile

Abstract

The utility model belongs to the field of filters, and provides an oil gas filter for an automobile, which is connected to an engine gas path and comprises a lower cover with two open ends and one end communicated with a gas path inlet, and an upper cover with one open end and the other end communicated with the lower cover, a plurality of filtering channels are formed in the outer ring wall of the upper cover, and filtering layers for filtering are arranged at the filtering channels. According to the oil gas filter for the automobile, the filtering channel and the filtering layer are arranged in the lateral direction, so that the purpose of preventing oil gas from directly flushing the filtering layer is achieved, and the advantages of improving the filtering effect of equipment, prolonging the service life of the equipment and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the field of filters, in particular to an oil and gas filter for automobiles. Background Art

[0002] The secondary combustible gas system of the automobile engine crankcase is an important part of the modern automobile fuel system. Its main function is to transport the unburned combustible gas generated during the engine's work process to the intake manifold through a pipeline for secondary combustion. This process not only improves fuel utilization and reduces fuel waste, but also ensures the stability of automobile fuel consumption and improves the economy of the automobile.

[0003] In the prior art, the combustible gas in the crankcase is usually processed by a simple oil-gas separator or filter device. These devices are designed to separate or filter out the oil and impurities in the combustible gas to prevent them from entering the engine air chamber. However, the existing oil-gas separators or filter devices are directly set in the gas path, and the filter elements in the filter devices are easily impacted by the oil and gas, which not only affects their service life, but also reduces the filtering effect of the equipment. Utility Model Content

[0004] The utility model discloses an oil and gas filter for automobiles, which is used to solve relevant technical problems in the background technology.

[0005] The technical solution provided by the utility model is as follows: an oil and gas filter for automobiles, connected to the engine gas path, comprising: a lower cover with openings at both ends and one end connected to the gas path inlet, and an upper cover with an opening at one end and connected to the other end of the lower cover;

[0006] A plurality of filtering channels are provided on the outer wall of the upper cover, and filtering layers for filtering are provided at the filtering channels.

[0007] In one embodiment, an L-shaped annular platform is extended inwardly from the inner ring wall of the lower cover, and the upper cover is clamped to the outer side of the vertical wall of the annular platform.

[0008] In one embodiment, a plurality of first barb structures are arranged at intervals outside the vertical wall of the annular platform, a slot is provided at the inner end of the upper cover, a second barb structure is provided in the slot, and the upper cover and the lower cover are connected by the second barb structure and the first barb structure.

[0009] In one embodiment, an L-shaped sealing portion extends outward from the end of the upper cover, the filter layer wraps around the outside of the upper cover, and both ends of the filter layer are sealed and connected to the annular platform and the sealing portion respectively.

[0010] In one embodiment, the filter layer is in the filter channel and is sealed to the surrounding walls of the filter channel.

[0011] In one embodiment, a reflux channel is provided inside the annular platform.

[0012] In one embodiment, a flow-uniform structure is provided between the lower cover and the upper cover passage.

[0013] In one embodiment, the flow-uniform structure is connected to the inside of the annular platform.

[0014] In one embodiment, the uniform flow structure is in a step-like shape, gradually shrinking toward the upper cover, and an air passage is provided on the step surface of the uniform flow structure.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The oil and gas filter for automobiles of the utility model achieves the purpose of preventing oil and gas from directly rushing into the filter layer by arranging the filter channel and the filter layer in the lateral direction, thereby achieving the advantages of improving the filtering effect of the equipment and extending the service life of the equipment.

[0017] (2) In the automobile oil and gas filter of the utility model, after the oil and gas are filtered through the filter layer, the oil is intercepted on the inner side of the annular platform. A reflux channel is provided on the inner side of the annular platform to allow the intercepted oil to reflux, thereby preventing the oil from being retained in the filter.

[0018] (3) The oil and gas filter for automobiles of the utility model is provided with a uniform flow structure to divert and buffer the oil and gas coming from the lower cover, thereby further preventing the oil and gas from impacting the filter layer, thereby further improving the filtering effect and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the external structure of the oil and gas filter for automobiles of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model oil and gas filter for automobile;

[0021] Figure 3 It is a sectional perspective view of the oil and gas filter for automobile of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the lower cover in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the upper cover in the utility model.

[0024] The figures are marked as follows: 1. lower cover, 2. upper cover, 3. filter layer, 4. uniform flow structure, 5. filter channel, 6. annular platform, 7. first barb structure, 8. second barb structure, 9. sealing part, 10. reflux channel, 11. air outlet channel. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0026] Example 1

[0027] like Figure 1-5 As shown, the utility model is a fuel filter for automobiles, comprising: a lower cover 1, an upper cover 2, and a filter layer 3; the lower cover 1 is a cylindrical structure with openings at both ends, the upper cover 2 is a cylindrical structure with openings at one end, the upper cover 2 is connected to one end of the upper cover 1, a plurality of filter channels 5 are provided on the upper cover 2, and a filter layer 3 is provided at the filter channel 5; the other end of the lower cover 1 is connected to the gas path inlet, the fuel enters from the lower cover 1 into the upper cover 2, and after impacting the inner top wall of the upper cover 2, it diffuses to both sides, and the fuel passes through the filter channel 5 and is filtered by the filter layer 3, and the oil carried in the fuel is filtered and intercepted by the filter layer 3 on the inner side of the upper cover 2, and the filtered gas continues to enter the engine gas path. The fuel filter for automobiles of the utility model achieves the purpose of preventing fuel from directly rushing into the filter layer 3 by arranging the filter channel 5 and the filter layer 3 in the lateral direction, thereby achieving the advantages of improving the filtering effect of the equipment and extending the service life of the equipment.

[0028] In this embodiment, the inner wall of the lower cover 1 extends inwardly to form an L-shaped annular platform 6, and the upper cover 2 is sleeved on the outside of the vertical wall of the annular platform 6 and is clamped therewith. Specifically:

[0029] A plurality of first barb structures 7 are arranged at intervals outside the vertical wall of the annular platform 6, a slot is provided at the inner end of the upper cover 2, a second barb structure 8 is provided in the slot, and the upper cover 2 and the lower cover 1 are connected by the second barb structure 8 and the first barb structure 7; the connection structure between the second barb structure 8 and the first barb structure 7 improves the assembly efficiency of the device.

[0030] In the present embodiment, an L-shaped sealing portion 9 extends outward from the end of the upper cover 2, the filter layer 3 is wrapped around the outside of the upper cover 2, and the two ends of the filter layer 3 are respectively sealed and connected to the annular platform 6 and the sealing portion 9; the filter layer 3 of the present embodiment adopts a fully surrounded manner, has a larger impact surface, can effectively alleviate the impact force, reduce the impact caused by oil and gas impact, and increase the service life of the filter layer 3.

[0031] In a feasible implementation manner, the filter layer 3 is in the filter channel 5 and is sealed and connected to the surrounding walls of the filter channel 5. In this implementation manner, the filter layer 3 is arranged at points, which can reduce the use of the filter layer 3 and reduce production costs.

[0032] Furthermore, a reflux channel 10 is provided inside the annular platform 6 to allow the intercepted oil to reflux and prevent the oil from being retained in the filter.

[0033] The working principle of this embodiment 1 is as follows: the other end of the lower cover 1 is connected to the gas path inlet, the oil and gas enter from the lower cover 1 into the upper cover 2, and after impacting the inner top wall of the upper cover 2, diffuse to both sides, the oil and gas pass through the filter channel 5 and are filtered by the filter layer 3, the oil carried in the oil and gas is filtered by the filter layer 3 and intercepted on the inner side of the annular platform 6, the filtered gas continues to enter the engine gas path, and the retained oil is gathered and refluxed through the reflux channel 10. The oil and gas filter for automobiles of the utility model achieves the purpose of preventing oil and gas from directly rushing into the filter layer 3 by arranging the filter channel 5 and the filter layer 3 in the lateral direction, thereby achieving the advantages of improving the filtering effect of the equipment and extending the service life of the equipment.

[0034] Example 2

[0035] This embodiment 2 is completed on the basis of embodiment 1, by setting a uniform flow structure 4 between the lower cover 1 and the upper cover 2. By setting the uniform flow structure 4, the oil and gas coming from the lower cover 2 are diverted and buffered, further avoiding the oil and gas from impacting the filter layer 3, thereby further improving the filtering effect and service life of the equipment. Specifically:

[0036] In this embodiment, the uniform flow structure 4 is connected to the inside of the annular platform 6. The uniform flow structure 4 is step-shaped and gradually retracts toward the upper cover 2. An air passage 11 is provided on the step surface of the uniform flow structure 4. The oil and gas can be buffered by the gradually retracted step structure, and the flow is evenly distributed through the air passage 11, so that the oil and gas are relatively smooth, reducing the possibility of oil and gas shock.

[0037] Working principle of Example 2: The other end of the lower cover 1 is connected to the gas path inlet, and the oil and gas enter the uniform flow structure 4. After being buffered and uniformly flowed by the uniform flow structure 4, the oil and gas enter the upper cover 2 relatively smoothly, and after impacting the inner top wall of the upper cover 2, diffuse to both sides, and the oil and gas are filtered by the filter layer 3 through the filter channel 5. The oil carried in the oil and gas is filtered and intercepted by the filter layer 3 on the inner side of the annular platform 6, and the filtered gas continues to enter the engine gas path, and the retained oil is gathered and refluxed by the reflux channel 10. By setting the uniform flow structure 4, the oil and gas coming from the lower cover 2 are diverted and buffered, and the oil and gas are further prevented from impacting the filter layer 3, thereby further improving the filtering effect and service life of the equipment.

[0038] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0039] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automotive oil and gas filter connected to the engine gas path, characterized in that: include: A lower cover (1) having openings at both ends and one end communicating with the gas path inlet, and an upper cover (2) having an opening at one end and communicating with the other end of the lower cover (1); A plurality of filtering channels (5) are provided on the outer wall of the upper cover (2), and a filtering layer (3) for filtering is provided at the filtering channel (5).

2. The automotive oil and gas filter according to claim 1, characterized in that: An L-shaped annular platform (6) extends inwardly from the inner wall of the lower cover (1), and the upper cover (2) is clamped to the outside of the vertical wall of the annular platform (6).

3. The oil and gas filter for automobile according to claim 2, characterized in that: A plurality of first barb structures (7) are arranged at intervals outside the vertical wall of the annular platform (6); a clamping groove is provided at the inner end of the upper cover (2); a second barb structure (8) is provided in the clamping groove; the upper cover (2) and the lower cover (1) are clamped together via the second barb structure (8) and the first barb structure (7).

4. The automotive oil and gas filter according to claim 2, characterized in that: An L-shaped sealing portion (9) extends outward from the end of the upper cover (2), the filter layer (3) wraps around the outside of the upper cover (2), and the two ends of the filter layer (3) are respectively sealed and connected to the annular platform (6) and the sealing portion (9).

5. The automotive oil and gas filter according to claim 1, characterized in that: The filter layer (3) is inside the filter channel (5) and is sealed to the surrounding walls inside the filter channel (5).

6. The automotive oil and gas filter according to claim 2, characterized in that: A reflux channel (10) is provided inside the annular platform (6).

7. The automotive oil and gas filter according to claim 2, characterized in that: A flow-uniform structure (4) is provided between the passages of the lower cover (1) and the upper cover (2).

8. The automotive oil and gas filter according to claim 7, characterized in that: The flow-uniform structure (4) is connected to the inside of the annular platform (6).

9. The automotive oil and gas filter according to claim 7, characterized in that: The uniform flow structure (4) is in the shape of a step, gradually indented in the direction of the upper cover (2), and an air passage (11) is provided on the step surface of the uniform flow structure (4).

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