A fuel filter

Abstract

The present invention relates to the technical field of fuel filtration, in particular to a fuel filter; the fuel filter comprises a shell, a top cover, a flow guide pipe, a first filter element, a second filter element, an oil inlet, an oil outlet and an extension rod, the top of the shell is detachably and fixedly connected with the top cover, the middle of the top cover is provided with an oil outlet, a first annular groove is provided inside the top cover around the oil outlet, a first filter element is placed inside the first annular groove, and a movable plate is fixedly connected to the bottom of the first filter element; a guide rod is provided on the top of the top cover, the guide rod is fixedly connected to the movable plate, a second filter element is fixedly connected to the lower surface of the movable plate, the first filter element and the second filter element are foldable in a vertical direction, a flow guide pipe is provided in the middle of the second filter element, the flow guide pipe is fixedly connected to the inside of the shell, a plurality of through holes are evenly provided on the surface of the flow guide pipe, and a second annular groove is provided on the bottom wall of the shell; the present invention can greatly extend the working time of the fuel filter by arranging two filter elements, the first filter element and the second filter element, and is convenient to replace, and ordinary users can replace it.

Description

Technical Field

[0001] The invention relates to the technical field of fuel filtration, in particular to a fuel filter. Background Art

[0002] The diesel filter plays a vital role in the engine. Without a good diesel filter, the engine's function will be affected and cannot achieve normal function. The fuel filter is generally composed of a filter seat and a filter element assembly that is screwed and clamped together.

[0003] At present, the diesel filter element is made of filter paper as the filter material. After a long period of use, the filter paper will be clogged by impurities or the filtering effect will be reduced. Therefore, the fuel filter needs to be disassembled and replaced. Such disassembly and replacement is too cumbersome and difficult for ordinary users.

[0004] In view of this, in order to overcome the above technical problems, the present invention designs a fuel filter to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is that when replacing the filter element, the fuel filter needs to be disassembled for replacement, which is too cumbersome and difficult for ordinary users.

[0006] A fuel filter provided by the present invention comprises a shell, a top cover, a guide pipe, a No. 1 filter element, a No. 2 filter element, an oil inlet, an oil outlet and an extension rod, wherein the top end of the shell is detachably and fixedly connected with a top cover, an oil outlet is arranged in the middle of the top cover, an annular groove No. 1 is arranged inside the top cover around the oil outlet, a No. 1 filter element is placed inside the No. 1 annular groove, and a movable plate is fixedly connected to the bottom of the No. 1 filter element; two through holes are arranged on the top of the top cover, a guide rod is arranged inside the through holes, the guide rod is fixedly connected to the movable plate, a No. 2 filter element is fixedly connected to the lower surface of the movable plate, the No. 1 filter element and the No. 2 filter element are foldable in the vertical direction, a guide pipe is arranged in the middle of the No. 2 filter element, the guide pipe is fixedly connected to the inside of the shell, a plurality of through holes are evenly arranged on the surface of the guide pipe, and a No. 2 annular groove is arranged on the bottom wall of the shell.

[0007] Preferably, the movable plate includes a connecting plate and a No. 1 fixed plate, the connecting part of the connecting plate and the No. 1 fixed plate is provided with a No. 1 magnet, and the connecting plate and the No. 1 fixed plate are fixedly connected by magnetic force; the lower surface edge of the No. 1 fixed plate is fixedly connected to a No. 1 baffle plate, the top of the No. 1 baffle plate is provided with a plurality of conical protrusions, the top of the No. 2 filter element is fixedly connected to a No. 2 fixed plate, the No. 2 fixed plate is detachably fixedly connected to the bottom of the No. 2 annular groove, the upper surface edge of the No. 2 fixed plate is fixedly connected to the No. 2 baffle plate, the top of the No. 2 baffle plate is provided with a plurality of conical grooves cooperating with the conical protrusions, the edge of the conical groove is provided with a rectangular groove, the inside of the rectangular groove is slidably connected with a slider, the bottom end of the slider is fixedly connected to one end of a spring, and the other end of the spring is fixedly connected to the side wall of the rectangular groove.

[0008] Preferably, the surfaces of the No. 1 filter element and the No. 2 filter element are provided with metal meshes, and the metal meshes have good toughness and plasticity.

[0009] Preferably, a plurality of magnetic plates are fixedly connected to the inner wall of the shell, and the magnetic plates are evenly arranged on the inner wall of the shell.

[0010] Preferably, a plurality of scrapers are provided on the edge of the lower surface of the movable plate, the scrapers are in contact with the magnetic plate, a groove begins to be formed at the edge of the bottom wall of the shell, and a second magnet is provided at the bottom of the groove.

[0011] Preferably, the surface of the guide tube is coated with an oil-water separation membrane, a water storage tank is provided on the bottom wall of the shell below the guide tube, a drain pipe is provided at the bottom of the water storage tank, and a plug cover is threadedly connected to the drain pipe opening.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. A fuel filter of the present invention can greatly extend the working time of the fuel filter by arranging two filter elements, namely, a first filter element and a second filter element, and is easy to replace, and can be replaced by ordinary users.

[0014] 2. A fuel filter of the present invention can adsorb and collect metal iron filings in the fuel by arranging a magnetic plate; and can prevent water in the fuel from entering the engine and affecting the normal operation of the engine by arranging an oil-water separation membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0017] Figure 2 It is a diagram showing the cooperation between the movable plate and the housing magnetic plate of the present invention;

[0018] Figure 3 This is a compression state diagram of the No. 2 filter element of the present invention;

[0019] Figure 4 It is a schematic diagram of the metal mesh structure of the present invention;

[0020] Figure 5 It is a schematic diagram of the extension rod structure of the present invention.

[0021] In the figure: shell 1, No. 2 annular groove 11, magnetic plate 12, groove 13, water storage tank 14, drain pipe 141, plug cover 142, top cover 2, No. 1 annular groove 21, guide pipe 3, No. 1 filter element 4, No. 2 filter element 5, No. 2 fixing plate 51, No. 2 baffle plate 52, conical groove 521, rectangular groove 522, slider 523, metal mesh 53, oil inlet 6, oil outlet 7, extension rod 8, movable plate 9, connecting plate 91, No. 1 fixing plate 92, No. 1 baffle plate 93, conical protrusion 931, scraper 94, guide rod 10. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] The present invention provides a fuel filter, comprising a shell 1, a top cover 2, a guide pipe 3, a first filter element 4, a second filter element 5, an oil inlet 6, an oil outlet 7 and an extension rod 8, wherein the top of the shell 1 is detachably fixedly connected with the top cover 2, the middle of the top cover 2 is provided with an oil outlet 7, a first annular groove 21 is provided inside the top cover 2 around the oil outlet 7, the first filter element 4 is placed inside the first annular groove 21, and a movable plate 9 is fixedly connected to the bottom of the first filter element 4; two through holes are provided at the top of the top cover 2, a guide rod 10 is provided inside the through holes, the guide rod 10 is fixedly connected to the movable plate 9, the lower surface of the movable plate 9 is fixedly connected with the second filter element 5, the first filter element 4 and the second filter element 5 are foldable in the vertical direction, a guide pipe 3 is provided in the middle of the second filter element 5, the guide pipe 3 is fixedly connected to the bottom of the shell 1, a plurality of through holes are evenly provided on the surface of the guide pipe 3, and a second annular groove 11 is provided on the bottom wall of the shell 1.

[0024] When the fuel filter is working, the untreated fuel enters the housing 1 through the oil inlet 6, and the impurities in the untreated fuel are filtered through the second filter element 5. The fuel filtered by the second filter element 5 enters the interior of the guide tube 3 through the through holes on the surface of the guide tube 3, and the treated fuel is discharged through the oil outlet 7 in the middle of the top cover 2; after a long period of use, the filter paper of the second filter element 5 will be clogged with impurities or the filtering effect will be reduced, so the fuel filter needs to be disassembled and replaced. Such disassembly and replacement is too cumbersome and it is also difficult for ordinary users to disassemble and replace, and professionals are required to replace it; in the present invention, when the second filter element 5 is used for a long time, the filter paper will be clogged with impurities or the filtering effect will be reduced. When the use needs to be replaced, the extension rod 8 is threadedly connected with the guide rod 10, and the guide rod 10 is driven by pushing the extension rod 8. The guide rod 10 pushes the movable plate 9 to move downward, and the No. 2 filter element 5 is compressed under the push of the movable plate 9, and the No. 1 filter element 4 placed in the No. 1 annular groove 21 is pulled out. When the No. 2 filter element 5 is compressed into the No. 2 annular groove 11, the No. 1 filter element 4 is completely pulled out and replaces the No. 2 filter element 5 to perform filtering work. Since a filter element can work for several years and does not need to be replaced frequently, the present invention is equipped with two filter elements, which can greatly extend the working time of the fuel filter and is easy to replace, and ordinary users can replace it.

[0025] As a specific embodiment of the present invention, the movable plate 9 includes a connecting plate 91 and a No. 1 fixed plate 92, and the connecting part of the connecting plate 91 and the No. 1 fixed plate 92 is provided with a No. 1 magnet, and the connecting plate 91 and the No. 1 fixed plate 92 are fixedly connected to the edge of the lower surface of the No. 1 fixed plate 92, and a plurality of conical protrusions 931 are provided on the top of the No. 2 filter element 5, and a No. 2 fixed plate 51 is fixedly connected to the top of the No. 2 filter element 5, and the No. 2 fixed plate 51 is detachably fixedly connected to the bottom of the No. 2 annular groove 11, and the No. 2 fixed plate 51 is fixedly connected to the edge of the upper surface of the No. 2 fixed plate 51, and a plurality of conical grooves 521 cooperating with the conical protrusions 931 are provided on the top of the No. 2 baffle plate 52, and a rectangular groove 522 is opened on the edge of the conical groove 521, and a slider 523 is slidably connected inside the rectangular groove 522, and one end of a spring is fixedly connected to the bottom of the slider 523, and the other end of the spring is fixedly connected to the side wall of the rectangular groove 522.

[0026] The movable plate 9 includes a connecting plate 91 and a No. 1 fixed plate 92. The connecting plate 91 and the No. 1 fixed plate 92 are fixed by magnetic connection. The guide rod 10 is driven by pushing the extension rod 8. The guide rod 10 pushes the movable plate 9 to move downward. The No. 2 filter element 5 is pushed and compressed by the movable plate 9, and the No. 1 filter element 4 placed inside the No. 1 annular groove 21 is pulled out. When the No. 2 filter element 5 is compressed into the No. 2 annular groove 11, the conical protrusion 931 at the top of the No. 1 baffle plate 93 cooperates with the conical groove 521 at the top of the No. 2 baffle plate 52, and then the slider 523 is used to limit and fix it. In this way, the No. 1 fixed plate 92 and the No. 2 fixed plate 51 can fix the scrapped No. 2 filter element 5 in the No. 2 annular groove 11; then the connecting plate 91 can be pulled by the extension rod 8 to separate the connecting plate 91 and the No. 1 fixed plate 92, and then the connecting plate 91 is pulled back to its original position.

[0027] As a specific implementation of the present invention, a metal mesh 53 is provided on the surface of the No. 1 filter element 4 and the No. 2 filter element 5, and the metal mesh 53 has good toughness and plasticity.

[0028] Since filter element No. 1 4 and filter element No. 2 5 in the present invention are foldable in the vertical direction and have poorer stability than traditional filter elements, a metal mesh 53 is provided on the surface of filter element No. 1 4 and filter element No. 2 5 to improve the stability of filter element No. 1 4 and filter element No. 2 5. The metal mesh 53 has good toughness and plasticity, and can protect filter element No. 1 4 and filter element No. 2 5 without affecting the folding of filter element No. 1 4 and filter element No. 2 5.

[0029] As a specific implementation of the present invention, a plurality of magnetic plates 12 are fixedly connected to the inner wall of the shell 1 , and the magnetic plates 12 are evenly arranged on the inner wall of the shell 1 .

[0030] A plurality of magnetic plates 12 are fixedly connected to the inner wall of the shell 1, which can adsorb and collect metal impurities in the fuel, reduce the accumulation of metal impurities on the surface of the No. 1 filter element 4 and the No. 2 filter element 5, avoid excessive impurities accumulating on the surface of the No. 1 filter element 4 and the No. 2 filter element 5 to cause blockage, thereby extending the service life of the No. 1 filter element 4 and the No. 2 filter element 5. The magnetic plates 12 are evenly arranged on the inner wall of the shell 1, which can achieve a better adsorption and collection effect on metal impurities.

[0031] As a specific embodiment of the present invention, a plurality of scrapers 94 are provided on the edge of the lower surface of the movable plate 9 , and the scrapers 94 are in contact with the magnetic plate 12 . A groove 13 is provided on the edge of the bottom wall of the shell 1 , and a second magnet 131 is provided at the bottom of the groove 13 .

[0032] When the movable plate 9 slides in the shell 1, a plurality of scrapers 94 are provided on the edge of the lower surface of the movable plate 9 to clean the metal impurities on the surface of the magnetic plate 12. The metal impurities on the surface of the magnetic plate 12 are scraped by the scrapers 94 and collected in the groove 13 to prevent the surface of the magnetic plate 12 from absorbing too many metal impurities and affecting the adsorption effect; a second magnet 131 is provided at the bottom of the groove 13 to absorb the metal impurities scraped into the groove 13 to prevent the metal impurities from returning to the fuel again.

[0033] As a specific embodiment of the present invention, the surface of the guide pipe 3 is coated with an oil-water separation membrane, a water storage tank 14 is opened on the bottom wall of the shell 1 below the guide pipe 3, a drain pipe 141 is opened at the bottom of the water storage tank 14, and a plug cover 142 is threadedly connected to the drain pipe 141.

[0034] When the filtered fuel passes through the through holes on the surface of the guide tube 3 and enters the interior of the guide tube 3, the surface of the guide tube 3 is coated with an oil-water separation membrane, and the fuel passes through the oil-water separation membrane and enters the interior of the guide tube 3, while the water in the fuel is blocked on the surface of the guide tube 3, preventing the water in the fuel from entering the engine and affecting the normal operation of the engine. The water flows along the guide tube 3 to the water storage tank 14, and part of the fuel will also flow into the water storage tank 14, but because the density of water is greater than that of fuel, the fuel will float on the surface of the water. When the water accumulates to a certain amount, the plug cover 142 at the mouth of the drain pipe 141 can be opened, and the water will be discharged along the drain pipe 141.

[0035] Working principle:

[0036] When the fuel filter is working, the untreated fuel enters the housing 1 through the oil inlet 6, and the impurities in the untreated fuel are filtered through the second filter element 5. The fuel filtered by the second filter element 5 enters the interior of the guide tube 3 through the through holes on the surface of the guide tube 3, and the treated fuel is discharged through the oil outlet 7 in the middle of the top cover 2; after a long period of use, the filter paper of the second filter element 5 will be clogged with impurities or the filtering effect will be reduced, so the fuel filter needs to be disassembled and replaced. Such disassembly and replacement is too cumbersome and it is also difficult for ordinary users to disassemble and replace, and professionals are required to replace it; in the present invention, when the second filter element 5 is used for a long time, the filter paper will be clogged with impurities or the filtering effect will be reduced. When the use needs to be replaced, the extension rod 8 is threadedly connected with the guide rod 10, and the guide rod 10 is driven by pushing the extension rod 8. The guide rod 10 pushes the movable plate 9 to move downward, and the No. 2 filter element 5 is compressed under the push of the movable plate 9, and the No. 1 filter element 4 placed in the No. 1 annular groove 21 is pulled out. When the No. 2 filter element 5 is compressed into the No. 2 annular groove 11, the No. 1 filter element 4 is completely pulled out and replaces the No. 2 filter element 5 to perform filtering work. Since a filter element can work for several years and does not need to be replaced frequently, the present invention is equipped with two filter elements, which can greatly extend the working time of the fuel filter and is easy to replace, and ordinary users can replace it.

[0037] The movable plate 9 includes a connecting plate 91 and a No. 1 fixed plate 92. The connecting plate 91 and the No. 1 fixed plate 92 are fixed by magnetic connection. The guide rod 10 is driven by pushing the extension rod 8. The guide rod 10 pushes the movable plate 9 to move downward. The No. 2 filter element 5 is pushed and compressed by the movable plate 9, and the No. 1 filter element 4 placed inside the No. 1 annular groove 21 is pulled out. When the No. 2 filter element 5 is compressed into the No. 2 annular groove 11, the conical protrusion 931 at the top of the No. 1 baffle plate 93 cooperates with the conical groove 521 at the top of the No. 2 baffle plate 52, and then the slider 523 is used to limit and fix it. In this way, the No. 1 fixed plate 92 and the No. 2 fixed plate 51 can fix the scrapped No. 2 filter element 5 in the No. 2 annular groove 11; then the connecting plate 91 can be pulled by the extension rod 8 to separate the connecting plate 91 and the No. 1 fixed plate 92, and then the connecting plate 91 is pulled back to its original position.

[0038] Since filter element No. 1 4 and filter element No. 2 5 in the present invention are foldable in the vertical direction and have poorer stability than traditional filter elements, a metal mesh 53 is provided on the surface of filter element No. 1 4 and filter element No. 2 5 to improve the stability of filter element No. 1 4 and filter element No. 2 5. The metal mesh 53 has good toughness and plasticity, and can protect filter element No. 1 4 and filter element No. 2 5 without affecting the folding of filter element No. 1 4 and filter element No. 2 5.

[0039] A plurality of magnetic plates 12 are fixedly connected to the inner wall of the shell 1, which can adsorb and collect metal impurities in the fuel, reduce the accumulation of metal impurities on the surface of the No. 1 filter element 4 and the No. 2 filter element 5, avoid excessive impurities accumulating on the surface of the No. 1 filter element 4 and the No. 2 filter element 5 to cause blockage, thereby extending the service life of the No. 1 filter element 4 and the No. 2 filter element 5. The magnetic plates 12 are evenly arranged on the inner wall of the shell 1, which can achieve a better adsorption and collection effect on metal impurities.

[0040] When the movable plate 9 slides in the shell 1, a plurality of scrapers 94 are provided on the edge of the lower surface of the movable plate 9 to clean the metal impurities on the surface of the magnetic plate 12. The metal impurities on the surface of the magnetic plate 12 are scraped by the scrapers 94 and collected in the groove 13 to prevent the surface of the magnetic plate 12 from absorbing too many metal impurities and affecting the adsorption effect; a second magnet 131 is provided at the bottom of the groove 13 to absorb the metal impurities scraped into the groove 13 to prevent the metal impurities from returning to the fuel again.

[0041] When the filtered fuel passes through the through holes on the surface of the guide tube 3 and enters the interior of the guide tube 3, the surface of the guide tube 3 is coated with an oil-water separation membrane, and the fuel passes through the oil-water separation membrane and enters the interior of the guide tube 3, while the water in the fuel is blocked on the surface of the guide tube 3, preventing the water in the fuel from entering the engine and affecting the normal operation of the engine. The water flows along the guide tube 3 to the water storage tank 14, and part of the fuel will also flow into the water storage tank 14, but because the density of water is greater than that of fuel, the fuel will float on the surface of the water. When the water accumulates to a certain amount, the plug cover 142 at the mouth of the drain pipe 141 can be opened, and the water will be discharged along the drain pipe 141.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fuel filter, comprising a housing (1), a top cover (2), a flow guide tube (3), a first filter element (4), a second filter element (5), an oil inlet (6), an oil outlet (7) and an extension rod (8), characterized in that: The top of the shell (1) is detachably and fixedly connected with a top cover (2), an oil outlet (7) is provided in the middle of the top cover (2), a first annular groove (21) is provided inside the top cover (2) around the oil outlet (7), a first filter element (4) is placed inside the first annular groove (21), and a movable plate (9) is fixedly connected to the bottom of the first filter element (4); two through holes are provided at the top of the top cover (2), a guide rod (10) is provided inside the through holes, the guide rod (10) is fixedly connected to the movable plate (9), a second filter element (5) is fixedly connected to the lower surface of the movable plate (9), the first filter element (4) and the second filter element (5) are foldable in the vertical direction, a guide pipe (3) is provided in the middle of the second filter element (5), the guide pipe (3) is fixedly connected to the bottom of the shell (1), a plurality of through holes are evenly provided on the surface of the guide pipe (3), and a second annular groove (11) is provided on the bottom wall of the shell (1); The movable plate (9) comprises a connecting plate (91) and a first fixing plate (92); a first magnet is provided at the connecting portion of the connecting plate (91) and the first fixing plate (92); the connecting plate (91) and the first fixing plate (92) are connected and fixed by magnetic force; a first baffle plate (93) is fixedly connected to the edge of the lower surface of the first fixing plate (92); a plurality of conical protrusions (931) are provided at the top of the first baffle plate (93); a second fixing plate (51) is fixedly connected to the top of the second filter element (5); the second fixing plate (51) and the second fixing plate (51) are connected to the second filter element (5). The bottom of the No. 1 annular groove (11) is detachably fixedly connected, the upper surface edge of the No. 2 fixing plate (51) is fixedly connected with the No. 2 baffle plate (52), the top of the No. 2 baffle plate (52) is provided with a plurality of conical grooves (521) cooperating with the conical protrusions (931), the edge of the conical groove (521) is provided with a rectangular groove (522), the inside of the rectangular groove (522) is slidably connected with a slider (523), the bottom end of the slider (523) is fixedly connected with one end of a spring, and the other end of the spring is fixedly connected to the side wall of the rectangular groove (522).

2. A fuel filter according to claim 1, characterized in that: Metal meshes (53) are provided on the surfaces of the first filter element (4) and the second filter element (5).

3. A fuel filter according to claim 1, characterized in that: A plurality of magnetic plates (12) are fixedly connected to the inner wall of the shell (1), and the magnetic plates (12) are evenly arranged on the inner wall of the shell (1).

4. A fuel filter according to claim 1, characterized in that: The lower surface edge of the movable plate (9) is provided with a plurality of scrapers (94), and the scrapers (94) are in contact with the magnetic plate (12). A groove (13) begins at the bottom wall edge of the shell (1), and a second magnet (131) is provided at the bottom of the groove (13).

5. A fuel filter according to claim 1, characterized in that: The surface of the guide pipe (3) is coated with an oil-water separation membrane, the bottom wall of the shell (1) below the guide pipe (3) is provided with a water storage tank (14), the bottom of the water storage tank (14) is provided with a drainage pipe (141), and the mouth of the drainage pipe (141) is threadedly connected with a plug cover (142).

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