Backflow prevention engine oil filter

Abstract

The utility model relates to the technical field of filters, and discloses an anti-backflow engine oil filter which comprises an outer shell, a top cover is arranged at the top of the outer shell, a partition plate is fixedly connected to the upper side of the inner wall of the outer shell, an inner barrel is fixedly connected to the lower surface of the partition plate, a funnel is fixedly connected to the middle of the lower surface of the partition plate, and an inner barrel is fixedly connected to the lower surface of the funnel. A pipeline is fixedly connected to the lower surface of the funnel, a pipeline is fixedly connected to the lower surface of the partition plate, a sealing block is slidably connected to the inner wall of the pipeline, a flow guide pipe is fixedly connected to the lower surface of the sealing block, the sealing block is attached to the funnel, and a reset assembly is arranged on the inner wall of the outer shell. The reset assembly is used for driving the sealing block to reset, the reset assembly comprises a fixing plate, automatic backflow can be avoided, the phenomenon that engine oil is excessively accumulated in the filter is reduced, and impurities and pollutants are prevented from being retained in the filter for a long time.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technology field especially relates to prevent backflow oil filter. BACKGROUND

[0002] In the normal operation process of automobile engine, oil filter plays a vital role, it can effectively filter the impurities and pollutants in the oil, ensure the stable operation of engine.

[0003] At present, the common oil filter on the market mostly adopts the relatively traditional structure design, its basic mechanical structure is mainly composed of shell, filter core and simple oil inlet and oil outlet channel, in the technical principle aspect, mainly utilize the physical filtration of filter core, when the oil under the pumping pressure of engine, from the oil inlet flows into the inside of filter, through the filter core, the impurities and pollutants are intercepted by filter core, and the clean oil flows from the oil outlet. In the aspect of preventing oil backflow, some filters adopt simple check valve structure, rely on the opening and closing of check valve flap under the oil pressure to control the oil flow direction.

[0004] The existing backflow prevention oil filter usually relies on simple check valve structure to prevent oil backflow, due to the relatively simple structure and working principle of check valve flap, in the actual use process, its sealing performance is often not ideal, when the engine stops working, the oil pressure drops rapidly, the check valve flap is difficult to close in time and tightly, leading to the phenomenon that the oil is prone to automatic backflow, which not only makes the oil excessively accumulate in the filter, but also causes the impurities and pollutants to be difficult to discharge in time in the filter, thereby affecting the normal filtering effect of the filter, and adversely affecting the lubrication and protection of the engine. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a backflow prevention oil filter, which aims at improving the phenomenon that the existing oil filter is prone to automatic backflow, which not only makes the oil excessively accumulate in the filter, but also causes the impurities and pollutants to be difficult to discharge in time in the filter, thereby affecting the normal filtering effect of the filter.

[0006] To achieve the above object, the utility model provides the following technical scheme: Anti -back flow oil filter, including the shell body, the top of shell body is provided with the top cover, the inner wall upper side of shell body is fixedly connected with the partition, the lower surface of partition is fixedly connected with the inner cylinder, the lower surface middle part of partition is fixedly connected with the hopper, the lower surface of hopper is fixedly connected with the pipeline, the lower surface of partition is fixedly connected with the pipeline, the inner wall slidingly connected of pipeline has the sealing block, the lower surface of sealing block is fixedly connected with the flow guide pipe, the sealing block is in line with the hopper, the inner wall of shell body is provided with reset component, and the reset component is used for driving sealing block reset;

[0007] The reset component includes a fixed plate, the outer wall of the fixed plate is fixedly connected to the inner wall of the shell body, the upper surface of the fixed plate is fixedly connected with a telescopic rod, and the outer wall of the telescopic rod is sleeved with a spring one.

[0008] Optionally, the inner side of the shell body is provided with an external thread, the outer wall of the top cover is fixedly connected with a threaded sleeve, the top of the shell body is slidingly connected with a sealing ring, the outer wall of the sealing ring is fixedly connected with a limiting ring, the lower surface of the sealing ring is provided with a propelling assembly, and the propelling assembly is used to move the sealing ring.

[0009] Optionally, the propelling assembly includes a slide rod, one end of the slide rod is fixedly connected to the lower surface of the sealing ring, and the outer wall of the slide rod is sleeved with a spring two.

[0010] Optionally, the outer wall of the slide rod is slidingly connected to the inner side of the shell body, and the slide rod is used to guide the expansion of the spring two.

[0011] Optionally, one end of the spring one is fixedly connected to the upper surface of the fixed plate, and the other end of the spring one is fixedly connected to the lower surface of the sealing block.

[0012] Optionally, one end of the spring two is fixedly connected to the lower surface of the sealing ring, and the other end of the spring two is fixedly connected to the inner side of the shell body.

[0013] Optionally, the outer wall of the limiting ring is slidingly connected to the top of the shell body, and the limiting ring is used to limit the sealing ring.

[0014] Optionally, the sealing ring is in line with the top cover, and the sealing ring is used to seal between the shell body and the top cover.

[0015] The anti-back flow oil filter provided by the utility model embodiment has one or more of the above technical solutions at least one of the following technical effects:

[0016] 1. In the utility model, first oil liquid flows downward through the top cover, the partition plate and the funnel, will push the sealing block downward, thereby make spring one shrink, when oil liquid down flow is completed, spring one rebounds, pushes the sealing block and seals the funnel, prevents oil liquid backflow, reached can avoid automatic backflow reduces the phenomenon that oil excessively accumulates in the filter, prevents impurity and pollutant long-term detention in the filter.

[0017] 2. In the utility model, first the shell body and the top cover are conveniently disassembled through the external thread and the threaded sleeve, the installation of the top cover in this process will press the sealing ring, make the sealing ring slide at the top of the shell body, at this moment, the sealing ring and the lower surface of the top cover are tightly adhered through the elastic pushing of spring two, realize efficient sealing, reached convenient disassembly and installation of the top plate, make the disassembly and installation of the filter become more simple, the user can more easily carry out regular cleaning and replacement. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, other drawings can also be obtained according to these drawings.

[0019] Figure 1 It is the three-dimensional structure schematic diagram of the anti-backflow engine oil filter proposed by the utility model;

[0020] Figure 2 It is the internal structure schematic diagram of the inner cylinder of the anti-backflow engine oil filter proposed by the utility model;

[0021] Figure 3 It is the pipeline internal structure schematic diagram of the anti-backflow engine oil filter proposed by the utility model;

[0022] Figure 4 It is the internal structure schematic diagram of the shell body of the anti-backflow engine oil filter proposed by the utility model.

[0023] Among them, the reference signs in the drawing are:

[0024] 1, shell body;2, top cover;3, partition plate;4, inner cylinder;5, funnel;6, sealing block;7, pipeline;8, flow guide pipe;9, telescopic rod;10, spring one;11, fixed plate;12, external thread;13, threaded sleeve;14, sealing ring;15, slide bar;16, spring two;17, limit ring. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary, and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0026] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "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 intended to facilitate the description of the embodiments 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 a limitation of the present application.

[0027] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0029] Referring to Figure 1 Figure 3 ​The utility model provides an embodiment: prevent backflow oil filter, including shell body 1, the top of shell body 1 is provided with top cover 2, the inner wall upper side of shell body 1 is fixedly connected with the partition 3, the lower surface of partition 3 is fixedly connected with inner cylinder 4, is used for carrying out the filtration and flow control of oil initially, the lower surface middle part of partition 3 is fixedly connected with funnel 5, funnel 5 is used to guide oil flow to subsequent processing part, ensure that the flow direction of oil is not obstructed, improve flow efficiency simultaneously, the lower surface of funnel 5 is fixedly connected with pipeline 7, and pipeline 7 is used to connect to subsequent oil flow channel, provides the smooth flow path for oil, the lower surface of partition 3 is fixedly connected with pipeline 7, the inner wall of pipeline 7 is slidably connected with sealing block 6, sealing block 6 plays the sealing effect, can prevent oil leakage through pipeline 7, ensure that oil is not influenced by external pollutants in the filtration process simultaneously, the lower surface of sealing block 6 is fixedly connected with flow guide pipe 8, sealing block 6 and funnel 5 are in close contact, can effectively prevent oil backflow, avoid excessive accumulation of oil in filter, guarantee that oil can pass through filter and finally flow to oil pan, and the inner wall of shell body 1 is provided with reset assembly, and reset assembly is used to drive sealing block 6 reset;

[0030] Reset assembly includes fixed plate 11, and the outer wall of fixed plate 11 is fixedly connected in the inner wall of shell body 1, and the upper surface of fixed plate 11 is fixedly connected with telescopic link 9, and the outer wall of telescopic link 9 is sleeved with spring one 10, and spring one 10 provides elastic support at both ends of telescopic link 9, to ensure that sealing block 6 can reset smoothly, thereby avoiding the accumulation problem caused by oil backflow.

[0031] Specifically, oil flows into the inside of filter from top cover 2, passes through the partition 3 and funnel 5 on shell body 1, and oil starts to flow downward, and in the process of flowing, due to the action of flow pressure, sealing block 6 is pushed to move downward, and spring one 10 is compressed, at this time, spring one 10 stores energy, and with the flow of oil, sealing block 6 continues to move downward, to ensure that oil flows smoothly to oil pan or other parts needing lubrication, after oil flow ends, spring one 10 begins to rebound, and sealing block 6 is pushed back to the original position, sealing block 6 moves upward along with the rebound of spring one 10, and tightly adheres to the lower surface of funnel 5, to prevent oil backflow, in this way, oil in the inside of filter always remains at the required position, to avoid excessive accumulation of oil in the filter, and to ensure that impurities and pollutants in the filter will not be retained due to oil backflow, thereby guaranteeing the effective operation of the filter and long-time stable work.

[0032] Reference Figure 1 , Figure 2 and Figure 4The outer wall of the top cover 2 is fixedly connected with a threaded sleeve 13, the outer thread 12 is used in cooperation with the threaded sleeve 13 of the top cover 2, the connection between the top cover 2 and the outer shell 1 is more compact and convenient to disassemble, convenient maintenance operation is provided, the top of the outer shell 1 is slidingly connected with a sealing ring 14, the sealing ring 14 plays a sealing gap between the outer shell 1 and the top cover 2, prevents oil leakage, ensures that the working environment of the filter is clean, the outer wall of the sealing ring 14 is fixedly connected with a limiting ring 17, the lower surface of the sealing ring 14 is provided with a propelling assembly, the propelling assembly is used to push the sealing ring 14 to move, the propelling assembly comprises a sliding rod 15, one end of the sliding rod 15 is fixedly connected to the lower surface of the sealing ring 14, the outer wall of the sliding rod 15 is sleeved with a spring 16, the outer wall of the sliding rod 15 is slidingly connected in the inner part of the outer shell 1, the sliding rod 15 is used to guide the extension and contraction of the spring 16, one end of the spring 10 is fixedly connected to the upper surface of the fixed plate 11, the other end of the spring 10 is fixedly connected to the lower surface of the sealing block 6, one end of the spring 16 is fixedly connected to the lower surface of the sealing ring 14, the other end of the spring 16 is fixedly connected to the inner part of the outer shell 1, the outer wall of the limiting ring 17 is slidingly connected to the top of the outer shell 1, the limiting ring 17 is used to limit the sealing ring 14, the sealing ring 14 is in close contact with the top cover 2, and the sealing ring 14 is used to seal between the outer shell 1 and the top cover 2.

[0033] Specifically, the outer shell 1 and the top cover 2 of the anti-backflow oil filter are connected through the outer thread 12 and the threaded sleeve 13, when disassembling is needed, the outer shell 1 can be conveniently disassembled by rotating the top cover 2, simplifying the maintenance work, the installation process of the top cover 2 will exert pressure on the sealing ring 14, making it slide in the outer shell 1, when the top cover 2 is gradually installed in place, the sealing ring 14 will be in sealing contact with the inner wall of the outer shell 1 under the action of pressure, ensuring that there is no leakage between the outer shell 1 and the top cover 2, at the same time, the spring 16 helps to push the sealing ring 14 to move downward through its elastic effect, making it closely fit with the lower surface of the top cover 2, forming an effective sealing structure, which not only can prevent oil leakage, but also can ensure that external impurities cannot enter the filter interior, keeping the internal environment pure.

[0034] Working principle: when the oil enters the anti-backflow oil filter, the oil enters from the top cover 2, flows downward through the partition plate 3 and the funnel 5, in the process of oil flow, the sealing block 6 is pushed downward under the action of pressure, at this time, the spring 10 is compressed and stores energy, when the oil flow ends, the spring 10 will rebound and push the sealing block 6 to move upward, the sealing block 6 is closely fitted with the funnel 5, thereby effectively preventing backflow of oil, avoiding excessive accumulation of oil in the filter, and preventing impurities and pollutants from remaining in the filter, ensuring effective operation of the filter;

[0035] In addition, the outer shell 1 and the top cover 2 are connected through the outer thread 12 and the threaded sleeve 13, and when disassembling, the top cover 2 can be conveniently disassembled by rotating, and during the installation process, the installation of the top cover 2 will exert pressure on the sealing ring 14, so that the sealing ring 14 slides in the inside of the outer shell 1, the spring 16 pushes the sealing ring 14 through the elastic effect, so that the sealing ring 14 is tightly attached to the lower surface of the top cover 2, the efficient sealing is completed, the oil leakage or the foreign matter from the outside is prevented from entering the inside of the filter, the disassembly and the installation of the top cover 2 become more convenient, and meanwhile, the efficient sealing of the filter during the operation is guaranteed, and the normal operation of the oil flow and the device is ensured.

[0036] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and 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. Anti-backflow oil filter comprising an outer casing (1), characterized in that: The top of the outer shell (1) is provided with a top cover (2), the inner wall of the outer shell (1) is fixedly connected with a partition plate (3), the lower surface of the partition plate (3) is fixedly connected with an inner cylinder (4), the lower surface of the partition plate (3) is fixedly connected with a funnel (5), the lower surface of the funnel (5) is fixedly connected with a pipeline (7), the lower surface of the partition plate (3) is fixedly connected with a pipeline (7), the inner wall of the pipeline (7) is slidably connected with a sealing block (6), the lower surface of the sealing block (6) is fixedly connected with a flow guide pipe (8), the sealing block (6) is fitted with the funnel (5), the inner wall of the outer shell (1) is provided with a reset assembly, and the reset assembly is used to drive the sealing block (6) to reset. The reset assembly comprises a fixed plate (11), and the outer wall of the fixed plate (11) is fixedly connected to the inner wall of the outer shell (1).

2. The anti-backflow oil filter according to claim 1, characterized in that: The inner wall of the outer shell (1) is provided with an outer thread (12), the outer wall of the top cover (2) is fixedly connected with a threaded sleeve (13), the top of the outer shell (1) is slidably connected with a sealing ring (14), the outer wall of the sealing ring (14) is fixedly connected with a limiting ring (17), the lower surface of the sealing ring (14) is provided with a propelling assembly, and the propelling assembly is used to push the sealing ring (14) to move.

3. The anti-backflow oil filter according to claim 2, characterized in that: The propelling assembly comprises a slide rod (15), one end of the slide rod (15) is fixedly connected to the lower surface of the sealing ring (14), and the outer wall of the slide rod (15) is sleeved with a spring (16).

4. The anti-backflow oil filter according to claim 3, characterized in that: The outer wall of the slide rod (15) is slidably connected to the inside of the outer shell (1), and the slide rod (15) is used to guide the expansion of the spring (16).

5. The anti-backflow oil filter according to claim 1, characterized in that: One end of the spring (10) is fixedly connected to the upper surface of the fixed plate (11), and the other end of the spring (10) is fixedly connected to the lower surface of the sealing block (6).

6. The anti-backflow oil filter according to claim 3, characterized in that: One end of the spring (16) is fixedly connected to the lower surface of the sealing ring (14), and the other end of the spring (16) is fixedly connected to the inside of the outer shell (1).

7. The anti-backflow oil filter according to claim 3, characterized in that: The outer wall of the limiting ring (17) is slidably connected to the top of the outer shell (1), and the limiting ring (17) is used to limit the sealing ring (14).

8. The anti-backflow oil filter according to claim 2, characterized in that: The sealing ring (14) is fitted with the top cover (2), and the sealing ring (14) is used to seal between the outer shell (1) and the top cover (2).

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