Filtering device of automobile fuel pump

Abstract

The utility model belongs to the technical field of vehicle fuel system parts, and provides an automobile fuel pump filtering device which comprises an outer shell, a middle shell, an inner shell, a cover and a filter element. Wherein a first accommodating cavity is formed in the outer shell; the middle shell is arranged in the first containing cavity and abuts against the outer shell, and a second containing cavity is formed in the middle shell; the inner shell is arranged in the second containing cavity and connected to the bottom of the middle shell, and the side wall of the inner shell and the side wall of the middle shell are arranged in a spaced mode. The cover body is detachably connected to the inner shell and is matched with the inner shell to form a sealed third containing cavity, an oil inlet and an oil outlet are formed in the cover body, and the oil outlet is communicated with the third containing cavity; the filter element is arranged in the third containing cavity and communicates with the oil inlet.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle fuel system components, and particularly relates to an automobile fuel pump filtering device. BACKGROUND

[0002] In the design of fuel pumps, the filter element plays a crucial role. The main function of the filter element is to filter out impurities and particulate matter in the fuel, preventing these contaminants from entering the engine's fuel injection system, thereby protecting the engine from damage and improving the purity and combustion efficiency of the fuel. However, there are some problems in the design and use of existing fuel pump filtering devices. In particular, during the driving process of the automobile, especially on bumpy and uneven roads, the filter element support structure in the fuel pump filtering device is prone to impact and vibration, causing the filter element to loosen or be damaged. Once the filter element fails, it will not be able to effectively filter impurities in the fuel, causing impure fuel to enter the engine, which not only accelerates the wear of the engine, but also may cause fuel system failure, and in severe cases, even cause the engine to stall or be damaged. Therefore, it is necessary to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the application is to provide an automobile fuel pump filtering device to solve the technical problem of poor stability of the filtering device in the prior art.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the application is to provide an automobile fuel pump filtering device, comprising:

[0005] An outer shell body, which forms a first containing cavity inside;

[0006] A middle shell body, which is arranged in the first containing cavity in an eccentric manner with respect to the axis of the first containing cavity and abuts against the outer shell body, and the inside of the middle shell body forms a second containing cavity;

[0007] An inner shell body, which is arranged in the second containing cavity and connected to the bottom of the middle shell body, and the inner shell body is arranged in a spaced manner with the side wall of the middle shell body;

[0008] A cover body, which is detachably connected to the inner shell body and cooperates with the inner shell body to form a sealed third containing cavity, and the cover body is provided with an oil inlet and an oil outlet, and the oil outlet is in communication with the third containing cavity;

[0009] A filter element, which is arranged in the third containing cavity and in communication with the oil inlet.

[0010] Optionally, the middle shell body is formed with a rib;

[0011] The rib is arranged between the middle shell body and the outer shell body and extends along the height direction of the middle shell body, and at least part of the rib of the middle shell body abuts against the outer shell body.

[0012] Optionally, a plurality of the ribs are arranged uniformly around the central axis of the middle shell.

[0013] Optionally, the automobile fuel pump filtering device further comprises a pressure relief valve mounted on the inner shell.

[0014] The pressure relief valve has a preset pressure threshold value, so that the oil inlet port can be directly communicated with the first accommodating cavity through the filter element and the pressure relief valve.

[0015] Optionally, the ribs are arranged at intervals between adjacent ribs to form a passage through which the pressure relief valve can be communicated with the first accommodating cavity.

[0016] Optionally, the middle shell is detachably connected to the outer shell and can be separated from the first accommodating cavity.

[0017] Optionally, the automobile fuel pump filtering device further comprises a bracket connected to the middle shell.

[0018] The bracket is formed with a protruding buckle, and the outer shell is formed with a clamping hole matched with the protruding buckle, so that the middle shell is detachably connected to the outer shell through the cooperation of the protruding buckle and the clamping hole.

[0019] Optionally, a plurality of groups of the protruding buckle and the clamping hole are arranged correspondingly.

[0020] The automobile fuel pump filtering device provided by the present application has the following advantages: compared with the prior art, in the automobile fuel pump filtering device provided by the present application, the middle shell is arranged in the first accommodating cavity formed in the inner shell, and the inner shell is arranged in the second accommodating cavity formed in the middle shell. Since the inner shell is arranged at an interval from the side wall of the middle shell, when the vehicle is in a bumpy state, the interval between the inner shell and the middle shell can serve as a buffer space to effectively prevent the structure of the inner shell from being damaged, so that the cover body detachably connected to the inner shell and the filter element arranged in the inner shell can be stably installed, thereby facilitating the sealing of the third cavity and the normal use of the filter element. Therefore, the automobile fuel pump filtering device provided by the present application has good stability, which is much better than the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1It is a whole structure schematic diagram of the automobile fuel pump filtering device in the embodiment of the application;

[0023] Figure 2 It is a top view structure schematic diagram of the automobile fuel pump filtering device in the embodiment of the application;

[0024] Figure 3 It is a sectional view structure along Figure 2 A-A line;

[0025] Figure 4 It is an explosion structure schematic diagram of the automobile fuel pump filtering device in the embodiment of the application Figure 1 ;

[0026] Figure 5 It is an explosion structure schematic diagram of the automobile fuel pump filtering device in the embodiment of the application Figure 2 .

[0027] In the figure, the reference signs are as follows: 100, outer shell; 101, first containing cavity; 102, clamping hole; 200, middle shell; 201, second containing cavity; 202, rib; 300, inner shell; 301, third containing cavity; 400, cover; 401, oil inlet; 402, oil outlet; 500, filter core; 600, pressure relief valve; 700, bracket; 701, protruding buckle. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of features. Thus, a feature defined with "first", "second" or "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0032] Please refer to Figures 1 to 4 Now a kind of automobile fuel pump filter device provided by the embodiment of the present application will be described. The automobile fuel pump filter device comprises an outer shell 100, a middle shell 200, an inner shell 300, a cover 400 and a filter element 500. Among them:

[0033] The first accommodating cavity 101 is formed inside the outer shell 100; the middle shell 200 is arranged in the first accommodating cavity 101 eccentric to the axis of the first accommodating cavity 101 and abuts against the outer shell 100, so that space for installing the fuel pump body can be reserved in the first accommodating cavity 101, which is beneficial to the integration of the fuel pump. The second accommodating cavity 201 is formed inside the middle shell 200; the inner shell 300 is arranged in the second accommodating cavity 201 and connected to the bottom of the middle shell 200, and the inner shell 300 is arranged spaced apart from the side wall of the middle shell 200; the cover 400 is detachably connected to the inner shell 300 and cooperates with the inner shell 300 to form a sealed third accommodating cavity 301. The cover 400 is provided with an oil inlet 401 and an oil outlet 402, and the oil outlet 402 communicates with the third accommodating cavity 301; the filter element 500 is arranged in the third accommodating cavity 301 and communicates with the oil inlet 401. In the embodiment, the fuel containing impurities enters the filter element 500 from the oil inlet 401, the filtered fuel enters the third accommodating cavity 301 from the filter element 500 and is discharged from the oil outlet 402.

[0034] According to the above structure provided in the embodiment, in the automobile fuel pump filter device provided by the embodiment, the middle shell 200 is arranged in the first accommodating cavity 101 formed inside the outer shell 100, and the inner shell 300 is arranged in the second accommodating cavity 201 formed inside the middle shell 200. Since the inner shell 300 is arranged spaced apart from the side wall of the middle shell 200, when the vehicle is in a jolt state, the space between the inner shell 300 and the middle shell 200 can be used as a buffer space to effectively avoid damage to the structure of the filter element 500 in the inner shell 300. The cover 400 detachably connected to the inner shell 300 and the filter element 500 arranged inside the inner shell 300 can all be stably installed, thereby also being beneficial to ensuring the sealing of the third cavity and the normal use of the filter element 500. Therefore, the automobile fuel pump filter device provided in the present application has good use stability, which is much better than the prior art.

[0035] In another embodiment of the present application, please refer toFigures 1 to 4 The middle shell 200 is provided with ribs 202; the ribs 202 are arranged between the middle shell 200 and the outer shell 100 and extend along the height direction of the middle shell 200, and at least part of the ribs 202 of the middle shell 200 abut against the outer shell 100. According to the above structure provided in the embodiment, the ribs 202 arranged between the middle shell 200 and the outer shell 100 can strengthen the structural strength of the middle shell 200 on the one hand, and can form a buffer space between the middle shell 200 and the outer shell 100 on the other hand, which is beneficial to further improve the use stability of the automobile fuel pump filtering device in the embodiment.

[0036] In another embodiment of the present application, please refer to Figures 1 to 4 The ribs 202 are arranged in multiple and uniformly distributed around the central axis of the middle shell 200. According to the above structure provided in the embodiment, the multiple uniformly arranged ribs 202 are beneficial to form multiple uniformly distributed buffer spaces between the middle shell 200 and the outer shell 100, which is beneficial to further improve the use stability of the automobile fuel pump filtering device in the embodiment.

[0037] In another embodiment of the present application, please refer to Figures 1 to 4 The automobile fuel pump filtering device further comprises a pressure relief valve 600 installed on the inner shell 300; the pressure relief valve 600 has a preset pressure threshold value so that the oil inlet 401 can directly communicate with the first containing cavity 101 through the filter element 500 and the pressure relief valve 600. According to the above structure provided in the embodiment, when the internal pressure of the filter element 500 is too large, the pressure relief valve 600 can be opened, so that the fuel entering the filter element 500 from the oil inlet 401 can be directly discharged into the first containing cavity 101 through the pressure relief valve 600, so that the filter element 500 will not be damaged and can be used stably for a long time, which is beneficial to further improve the use stability of the automobile fuel pump filtering device in the embodiment.

[0038] In another embodiment of the present application, please refer to Figures 1 to 4 The adjacent ribs 202 are arranged with a spacing and form a passage enabling the pressure relief valve 600 to communicate with the first containing cavity 101. According to the above structure provided in the embodiment, the passage formed between the adjacent ribs 202 can increase the flow path of the fuel, which is beneficial to cool the fuel and further improve the use stability of the automobile fuel pump filtering device in the embodiment.

[0039] In another embodiment of the present application, please refer to Figures 1 to 4The middle shell 200 is detachably connected to the outer shell 100 and can be separated from the first accommodating cavity 101. According to the above structure provided in the embodiment, the middle shell 200 detachably connected to the outer shell 100 can be conveniently taken out from the first accommodating cavity 101, so that the operator can more conveniently replace the filter element 500 and the use stability of the automobile fuel pump filtering device in the embodiment is further improved.

[0040] In another embodiment of the present application, referring to Figures 1 to 4 The automobile fuel pump filtering device further comprises a support 700 connected to the middle shell 200. The support 700 is formed with a protruding buckle 701, and the outer shell 100 is formed with a clamping hole 102 matched with the protruding buckle 701. The middle shell 200 is detachably connected to the outer shell 100 through the clamping of the protruding buckle 701 and the clamping hole 102. According to the above structure provided in the embodiment, the protruding buckle 701 formed on the support 700 and the clamping hole 102 formed on the outer shell 100 can facilitate the connection and disconnection of the middle shell 200 and the outer shell 100, which is conducive to further improving the use stability of the automobile fuel pump filtering device in the embodiment. It can be understood that, in order to maintain the uniformity of the connection, the protruding buckle 701 is also arranged on the side wall of the middle shell 200 corresponding to the abutment with the outer shell 100, so as to cooperate with the clamping hole 102 on the outer shell 100. In order to maintain the connection strength of the middle shell 200 and the support 700, the middle shell 200 and the support 700 are usually integrally formed by injection molding.

[0041] In another embodiment of the present application, referring to Figures 1 to 4 The protruding buckle 701 and the clamping hole 102 are correspondingly arranged in multiple groups. According to the above structure provided in the embodiment, the multiple groups of the protruding buckle 701 and the clamping hole 102 cooperating with each other can form a more stable connection between the middle shell 200 and the outer shell 100, which is conducive to further improving the use stability of the automobile fuel pump filtering device in the embodiment.

[0042] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fuel pump filter device for automobiles, characterized in that, include: The outer shell (100) has a first receiving cavity (101) formed inside. The middle shell (200) is eccentrically disposed within the first receiving cavity (101) relative to the axis of the first receiving cavity (101) and abuts against the outer shell (100), and the interior of the middle shell (200) forms a second receiving cavity (201). An inner housing (300) is disposed within the second receiving cavity (201) and connected to the bottom of the middle housing (200), with the inner housing (300) and the sidewall of the middle housing (200) spaced apart. The cover (400) is detachably connected to the inner shell (300) and forms a sealed third receiving cavity (301) with the inner shell (300). The cover (400) is provided with an oil inlet (401) and an oil outlet (402). The oil outlet (402) communicates with the third receiving cavity (301). The filter element (500) is disposed in the third receiving cavity (301) and communicates with the oil inlet (401).

2. The automotive fuel pump filter device as described in claim 1, characterized in that: Ribs (202) are formed on the middle shell (200); The rib (202) is disposed between the middle shell (200) and the outer shell (100) and extends along the height direction of the middle shell (200), and at least part of the rib (202) abuts against the outer shell (100).

3. The automotive fuel pump filter device as described in claim 2, characterized in that: The ribs (202) are arranged in multiples and are evenly distributed around the central axis of the middle shell (200).

4. The automotive fuel pump filter device as described in claim 3, characterized in that: The automotive fuel pump filter also includes a pressure relief valve (600) installed on the inner housing (300). The pressure relief valve (600) has a preset pressure threshold so that the oil inlet (401) can be directly connected to the first receiving cavity (101) through the filter element (500) and the pressure relief valve (600).

5. The automotive fuel pump filter device as described in claim 4, characterized in that: The adjacent ribs (202) are spaced apart and form a channel that allows the pressure relief valve (600) to communicate with the first receiving cavity (101).

6. The automotive fuel pump filter device as described in claim 1, characterized in that: The middle housing (200) is detachably connected to the outer housing (100) and can be separated from the first receiving cavity (101).

7. The automotive fuel pump filter device as described in claim 6, characterized in that: The automotive fuel pump filter also includes a bracket (700) connected to the middle housing (200). A buckle (701) is formed on the bracket (700), and a snap-fit ​​hole (102) adapted to the buckle (701) is formed on the outer shell (100). The middle shell (200) is detachably connected to the outer shell (100) by engaging the buckle (701) and the snap-fit ​​hole (102).

8. The automotive fuel pump filter device as described in claim 7, characterized in that: Multiple sets of the protruding buckle (701) and the snap-fit ​​hole (102) are provided respectively.

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