CN108131227B - Fuel filter module - Google Patents
Fuel filter module Download PDFInfo
- Publication number
- CN108131227B CN108131227B CN201810134969.6A CN201810134969A CN108131227B CN 108131227 B CN108131227 B CN 108131227B CN 201810134969 A CN201810134969 A CN 201810134969A CN 108131227 B CN108131227 B CN 108131227B
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- filter
- fine
- filtering
- rough
- fine filtering
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- 239000000446 fuel Substances 0.000 title claims abstract description 58
- 238000001914 filtration Methods 0.000 claims abstract description 316
- 238000007789 sealing Methods 0.000 claims description 48
- 241000405070 Percophidae Species 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 74
- 230000006872 improvement Effects 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a fuel filter module, which belongs to the technical field of fuel filter systems and comprises a filter seat, a coarse filter and a fine filter, wherein the lower part of a coarse filter body of the coarse filter, the lower part of a fine filter body of the fine filter and the filter seat are integrated; the coarse filtration filter element of the coarse filtration filter comprises a coarse filtration upper end cover, a coarse filtration lower end cover and a coarse filtration central tube, wherein a negative pressure side gas collecting tube is arranged in the middle of the coarse filtration upper end cover, the lower end of the negative pressure side gas collecting tube is connected with a negative pressure side exhaust pipe, the inlet end of the negative pressure side exhaust pipe is provided with a coarse filtration exhaust one-way valve, and the outlet end of the negative pressure side exhaust pipe is provided with a quantitative hole; the fine filter element of the fine filter comprises a fine filter upper end cover, a fine filter lower end cover, a fine filter central tube and a positive pressure side exhaust channel, wherein a fine filter exhaust one-way valve is arranged in the positive pressure side exhaust channel. The invention integrates the coarse filter and the fine filter into a whole, and has compact structure; and can effectively prevent the accumulation of gas in the coarse filter and the fine filter.
Description
Technical Field
The invention belongs to the technical field of fuel filtering systems, and particularly relates to a fuel filtering module.
Background
The fuel filter system mostly adopts a structure of connecting a fuel coarse filter, an oil delivery pump and a fuel fine filter in series. The fuel strainer is arranged on the front side of the fuel pump, the side is a negative pressure side, and the fuel strainer is mainly used for filtering larger particles and filtering water, preventing the large particles from wearing the fuel pump, and being beneficial to protecting the fuel pump. The fuel fine filter is arranged on the rear side of the fuel delivery pump, which is the positive pressure side, and mainly filters smaller particles. However, the fuel strainer and the fuel fine filter in the existing fuel filtering system are arranged separately, so that a large arrangement space of the engine is occupied, the whole engine is not attractive in arrangement, and the design development direction of the engine is different from that of the engine with compact structure and miniaturized volume.
In addition, as the emission requirements become higher and higher, the air permeability of the filter material becomes worse, most of the air entering the pipeline from the outside is accumulated in the fuel strainer and the fuel fine filter to be difficult to discharge, and the fuel in the fuel strainer and the fuel fine filter is made to be small. When the engine is started, because the fuel is insufficient, the engine is often required to be started for a few times until the gas accumulated in the fuel strainer and the fuel fine filter is exhausted completely, and the engine can not be started and normally works, so that the engine is difficult to stop and start.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the fuel filter module integrates a coarse filter and a fine filter into a whole, so that the structure is compact; and can effectively prevent the accumulation of gas in the coarse filter and the fine filter, and ensure the normal start of the engine.
In order to solve the technical problems, the technical scheme of the invention is as follows: the fuel filter module comprises a filter seat, a coarse filter and a fine filter, wherein the coarse filter comprises a coarse filter body and a coarse filter element, the fine filter comprises a fine filter body and a fine filter element, and the lower part of the coarse filter body, the lower part of the fine filter body and the filter seat are integrated;
the filter seat is provided with a rough filtering oil inlet duct and a rough filtering oil outlet duct, and the rough filtering oil inlet duct is communicated with a cavity between the rough filtering body and the rough filtering filter element; the rough filtering filter element comprises a rough filtering upper end cover, a rough filtering lower end cover and a rough filtering central pipe arranged between the rough filtering upper end cover and the rough filtering lower end cover; a rough filtering oil outlet is formed in the rough filtering central pipe, and the rough filtering central pipe is communicated with the rough filtering oil outlet channel; a rough filtration first sealing element is arranged between the rough filtration lower end cover and the rough filtration oil outlet channel;
the middle part of the rough filtering upper end cover is provided with a negative pressure side gas collecting pipe, the negative pressure side gas collecting pipe penetrates through the rough filtering upper end cover and extends into the rough filtering central pipe, the lower end of the negative pressure side gas collecting pipe is connected with a negative pressure side exhaust pipe, the negative pressure side exhaust pipe is positioned in the rough filtering central pipe, the inlet end of the negative pressure side exhaust pipe is provided with a rough filtering exhaust one-way valve, and the outlet end of the negative pressure side exhaust pipe is provided with a quantitative hole;
the filter seat is provided with a fine filtering oil inlet duct, a fine filtering oil outlet duct and a fine filtering oil outlet duct, wherein the fine filtering oil inlet duct is communicated with a cavity between the fine filtering body and the fine filtering filter element;
the fine filter element comprises a fine filter upper end cover, a fine filter lower end cover and a fine filter central tube arranged between the fine filter upper end cover and the fine filter lower end cover; a fine filtering oil outlet is formed in the fine filtering central pipe, and the fine filtering central pipe is communicated with the fine filtering oil outlet channel; a fine filtration first sealing element is arranged between the fine filtration lower end cover and the fine filtration oil channel;
the fine filter further comprises a positive pressure side exhaust channel penetrating through the fine filter upper end cover, the fine filter central tube and the fine filter lower end cover, the upper end of the positive pressure side exhaust channel is located on the upper portion of the fine filter body, the lower end of the positive pressure side exhaust channel is communicated with the fine filter exhaust channel, and a fine filter exhaust one-way valve is arranged in the positive pressure side exhaust channel.
As an improvement, a plurality of straining support plates for supporting straining filter paper are arranged on the periphery of the straining central tube, and straining oil outlets are arranged on the upper part of the straining central tube; the periphery of the fine filtering central tube is provided with a plurality of fine filtering supporting plates for supporting fine filtering paper, and the fine filtering oil outlet is arranged on the upper part of the fine filtering central tube.
As an improvement, the negative pressure side gas collecting tube is an inverted cone-shaped negative pressure side gas collecting tube;
the positive pressure side exhaust channel comprises a first exhaust pipeline and a second exhaust pipeline which are connected together in a sealing way, the first exhaust pipeline is fixedly arranged at the upper part of the fine filtering body, the first exhaust pipeline penetrates through the fine filtering upper end cover and extends into the fine filtering central pipe, a fine filtering second sealing element is arranged between the first exhaust pipeline and the middle part of the fine filtering upper end cover, and the fine filtering exhaust one-way valve is arranged in the first exhaust pipeline; the second exhaust pipeline passes through the fine filtering lower end cover and is communicated with the fine filtering exhaust oil duct;
the inlet end of the first exhaust pipeline is a gas collecting part, the outlet end of the first exhaust pipeline is an exhaust part, and the inner diameter of the gas collecting part is larger than that of the exhaust part.
As an improvement, the rough filtration exhaust one-way valve is a duckbill one-way valve; the quantitative hole is arranged on the bottom surface of the negative pressure side exhaust pipe; the fine filtering exhaust one-way valve is also a duckbill one-way valve.
As an improvement, the rough filtering body comprises a rough filtering shell and a rough filtering upper cover which is arranged on the upper part of the rough filtering shell in a sealing way, and the lower part of the rough filtering shell and the filtering seat are integrated; the fine filtering body comprises a fine filtering shell and a fine filtering upper cover which is arranged on the upper portion of the fine filtering shell in a sealing mode, and the lower portion of the fine filtering shell and the filtering seat are integrated.
As a further improvement, the filter base is further provided with a rough filtering exhaust duct, the lower surface of the rough filtering lower end cover is provided with a rough filtering first bulge which stretches into the rough filtering exhaust duct, a rough filtering second sealing element is arranged between the rough filtering first bulge and the rough filtering exhaust duct, the lower part of the rough filtering first bulge is provided with a rough filtering second bulge which stretches into the rough filtering exhaust duct, and the rough filtering first sealing element is arranged between the rough filtering second bulge and the rough filtering exhaust duct; the lower surface of the fine filtering lower end cover is provided with a fine filtering first bulge extending into the fine filtering oil drain channel, a fine filtering third sealing element is arranged between the fine filtering first bulge and the fine filtering oil drain channel, the lower part of the fine filtering first bulge is provided with a fine filtering second bulge extending into the fine filtering oil drain channel, and the fine filtering first sealing element is arranged between the fine filtering second bulge and the fine filtering oil drain channel.
As a further improvement, the rough filter drain passage and the fine filter drain passage communicate.
As a further improvement, the rough filtering upper cover is provided with rough filtering external threads, the upper part of the rough filtering shell is provided with rough filtering internal threads matched with the rough filtering external threads, and a rough filtering third sealing element is arranged between the rough filtering upper cover and the rough filtering shell; the fine filtering upper cover is provided with fine filtering external threads, the upper part of the fine filtering shell is provided with fine filtering internal threads matched with the fine filtering external threads, and a fourth sealing element is arranged between the fine filtering upper cover and the fine filtering shell.
As a further improvement, the negative pressure side gas collecting tube is clamped on the rough filtering upper cover; the positive pressure side exhaust channel of the positive pressure side is clamped on the fine filter upper cover.
As an improvement, the lower surface of the rough filtration upper end cover and the upper surface of the rough filtration lower end cover are respectively provided with a rough filtration annular bulge matched with the rough filtration central tube; the rough filtering upper end cover, the negative pressure side gas collecting tube, the negative pressure side exhaust tube and the rough filtering annular bulge of the rough filtering upper end cover are integrally arranged; the lower surface of the fine filtering upper end cover and the upper surface of the fine filtering lower end cover are both provided with fine filtering annular protrusions matched with the fine filtering central tube.
After the technical scheme is adopted, the invention has the beneficial effects that:
because the lower part of the rough filtering body, the lower part of the fine filtering body and the filtering seat are integrated, the rough filter and the fine filter are integrated into a whole, so that the structure is compact.
The middle part of the coarse filtration upper end cover of the coarse filtration device is provided with a negative pressure side gas collecting pipe, the lower end of the negative pressure side gas collecting pipe is connected with a negative pressure side exhaust pipe, the inlet end of the negative pressure side exhaust pipe is provided with a coarse filtration exhaust one-way valve, the outlet end of the negative pressure side exhaust pipe is provided with a quantitative hole, the coarse filtration device is positioned at the negative pressure side, gas is separated out and then gathered at the upper part of a coarse filtration body, the coarse filtration exhaust one-way valve is opened under the action of suction, so that the gas gathered at the upper part can enter the negative pressure side exhaust pipe through the negative pressure side gas collecting pipe and the coarse filtration exhaust one-way valve, then enter flowing oil through the quantitative hole and flow along with fuel, the gas can be effectively prevented from accumulating in the coarse filtration device, and the normal starting of an engine is ensured; because the fine filter is designed to penetrate through the fine filter upper end cover, the fine filter central tube and the positive pressure side exhaust channel of the fine filter lower end cover, the upper end of the positive pressure side exhaust channel is positioned at the upper part of the fine filter body, the lower end of the positive pressure side exhaust channel is communicated with the fine filter exhaust channel, a fine filter exhaust one-way valve is arranged in the positive pressure side exhaust channel, because the fine filter is positioned at the positive pressure side, gas is separated out and then gathered at the upper part of the fine filter body, the fine filter exhaust one-way valve is opened under the action of pressure, thus the gas gathered at the upper part can enter the positive pressure side exhaust channel, and is discharged into an oil tank through the fine filter exhaust channel after descending, the gas can be effectively prevented from accumulating in the fine filter, and the normal starting of an engine is ensured.
The periphery of the rough filtering central pipe is provided with a plurality of rough filtering supporting plates for supporting rough filtering paper, the rough filtering oil outlet is arranged at the upper part of the rough filtering central pipe, the periphery of the fine filtering central pipe is provided with a plurality of fine filtering supporting plates for supporting fine filtering paper, and the fine filtering oil outlet is arranged at the upper part of the fine filtering central pipe, so that fuel oil entering from a rough filtering oil inlet channel ascends to the rough filtering oil outlet of the rough filtering central pipe along a cavity formed between the rough filtering supporting plates and the rough filtering paper after being filtered by the rough filtering paper, and then enters a rough filtering oil duct through the inside of the rough filtering central pipe in a descending way, thereby the utilization rate of the whole rough filtering paper can be improved; and then fuel oil enters an oil inlet of the oil delivery pump, an oil outlet of the oil delivery pump enters a fine filtering oil inlet channel of the fine filter, after being filtered by the fine filtering filter paper, the fuel oil ascends to a fine filtering oil outlet of the fine filtering central pipe along a cavity formed between the fine filtering support plate and the fine filtering filter paper, and then enters the fine filtering oil inlet channel through the inner part of the fine filtering central pipe, so that the whole fine filtering filter paper can be utilized for filtering, and the utilization rate of the fine filtering filter paper can be improved.
Because the straining body includes straining shell and sealing mounting straining upper cover on straining shell upper portion, with straining the upper cover and removing the back from straining the shell like this, with straining the filter core again from straining the seat and removing, can be convenient carry out dismouting to straining the filter core, convenient maintenance saves the cost. Because the fine filter body comprises a fine filter shell and a fine filter upper cover which is arranged on the upper part of the fine filter shell in a sealing way, after the fine filter upper cover is detached from the fine filter shell, the fine filter element is detached from the filter seat, so that the fine filter element can be conveniently detached and assembled, the maintenance is convenient, and the cost is saved.
The filter seat is also provided with the rough filter drain duct, and the lower surface of the rough filter lower end cover is provided with the rough filter first bulge which stretches into the rough filter drain duct, so that when the rough filter element is detached, fuel in the rough filter shell can flow back to the fuel tank through the rough filter drain duct, and pollution caused by the fuel flowing into the external environment is avoided. Because the lower surface of the fine filtering lower end cover is provided with the fine filtering first bulge which stretches into the fine filtering drain duct, when the fine filtering filter element is detached, fuel in the fine filtering shell can flow back to the fuel tank through the fine filtering drain duct, and pollution caused by fuel flowing into the external environment is avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a cross-sectional view of a fuel filter module provided by an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a strainer in a fuel filter module provided in an embodiment of the present invention;
fig. 6 is an enlarged view of a portion a of fig. 5;
FIG. 7 is a cross-sectional view of a fine filter in a fuel filter module provided by an embodiment of the present invention;
in the figure: 10-filter base, 101-coarse filtration oil inlet duct, 102-coarse filtration oil outlet duct, 103-coarse filtration oil outlet duct, 104-fine filtration oil inlet duct, 105-fine filtration oil outlet duct and 106-fine filtration oil outlet duct;
20-coarse filter, 201-coarse filter element, 2011-coarse filter upper end cover, 2012-coarse filter lower end cover, 2013-coarse filter central tube, 2014-negative pressure side gas collecting tube, 2015-negative pressure side exhaust pipe, 2016-coarse filter exhaust check valve, 2017-quantitative hole, 2018-coarse filter annular bulge, 2019-coarse filter annular bulge, 2020-coarse filter paper, 2021-coarse filter support plate, 2022-coarse filter oil outlet, 2023-coarse filter first bulge, 2024-coarse filter second bulge, 202-coarse filter shell, 203-coarse filter upper cover, 204-third sealing ring, 205-first sealing ring and 206-second sealing ring;
30-fine filter, 301-fine filter cartridge, 3011-fine filter upper end cover, 3012-fine filter lower end cover, 3013-fine filter central tube, 3014-fine filter annular protrusion, 3015-fine filter annular protrusion, 3016-fine filter paper, 3017-fine filter support plate, 3018-fine filter oil outlet, 3019-fine filter first protrusion, 3020-fine filter second protrusion, 302-fine filter housing, 303-fine filter upper cover, 304-fourth seal ring, 305-positive pressure side exhaust passage, 3051-fine filter exhaust check valve, 3052-first exhaust pipe, 3053-second exhaust pipe, 3054-seal ring, 3055-gas collecting portion, 3056-exhaust portion, 306-seal ring, 307-first seal ring, 308-third seal ring;
the open arrows in fig. 4, 5 and 7 represent the trend of the fuel; the solid arrows in fig. 4, 5 and 7 represent the trend of the gas.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown collectively in fig. 1 to 7, a fuel filter module includes a filter base 10, a strainer 20, and a fine filter 30.
Referring to fig. 2, 4, 5 and 6, the strainer 20 includes a strainer body and a strainer core 201, the strainer body includes a strainer housing 202 and a strainer upper cover 203 sealingly mounted on an upper portion of the strainer housing 202, a lower portion of the strainer housing 202 is integrally formed with the filter base 10, preferably, the strainer upper cover 203 is provided with a strainer external thread, an upper portion of the strainer housing 202 is provided with a strainer internal thread adapted to the strainer external thread, and a strainer third sealing member is provided between the strainer upper cover 203 and the strainer housing 202. The third seal element is preferably a third seal ring 204, however, other manners of implementing the third seal element by those skilled in the art, such as oil seals, etc., are not described herein.
The filter base 10 is provided with a rough filtering oil inlet channel 101, a rough filtering oil outlet channel 102 and a rough filtering oil outlet channel 103, wherein the rough filtering oil inlet channel 101 is communicated with a cavity between a rough filtering body and a rough filtering filter element 201.
The straining filter 201 comprises a straining upper end cap 2011, a straining lower end cap 2012, and a straining central tube 2013 arranged between the straining upper end cap 2011 and the straining lower end cap 2012.
The middle part of straining upper end cover 2011 is equipped with negative pressure side gas collecting tube 2014, and preferably, negative pressure side gas collecting tube 2014 clamps on straining upper cover 203, and negative pressure side gas collecting tube 2014 passes straining upper end cover 2011 and extends to straining in central tube 2013, and the lower extreme of negative pressure side gas collecting tube 2014 is connected with negative pressure side blast pipe 2015, and negative pressure side blast pipe 2015 is located straining inside central tube 2013, and the entrance point of negative pressure side blast pipe 2015 is equipped with straining exhaust check valve 2016, and the exit end of negative pressure side blast pipe 2015 is equipped with quantitative hole 2017. Preferably, the negative pressure side header 2014 is an inverted cone-shaped negative pressure side header. The rough filtration exhaust check valve 2016 is a duckbill check valve; the quantitative hole 2017 is provided in the bottom surface of the negative pressure side exhaust pipe 2015.
The lower surface of the straining upper end cover 2011 is provided with straining annular protrusions 2018 matched with straining central tubes 2013, and the upper surface of the straining lower end cover 2012 is provided with straining annular protrusions 2019 matched with straining central tubes 2013.
In order to reduce the number of parts, it is preferable that the rough filter upper end cover 2011, the negative pressure side gas collecting pipe 2014, the negative pressure side gas discharging pipe 2015 and the rough filter annular protrusion 2018 are integrally provided for easy installation. Of course, the rough filter upper end cover 2011, the negative pressure side header 2014, and the negative pressure side exhaust pipe 2015 may be separately provided.
In order to improve the utilization rate of the rough filter paper 2020, a plurality of rough filter support plates 2021 for supporting the rough filter paper 2020 are arranged on the periphery of the rough filter central tube 2013, a rough filter oil outlet 2022 is formed in the upper portion of the rough filter central tube 2013, and the rough filter central tube 2013 is communicated with the rough filter oil duct 102.
The lower surface of the straining lower end cap 2012 has a straining first protrusion 2023 extending into the straining exhaust duct 103, a straining second sealing element is arranged between the straining first protrusion 2023 and the straining exhaust duct 103, the lower part of the straining first protrusion 2023 has a straining second protrusion 2024 extending into the straining exhaust duct 102, and a straining first sealing element is arranged between the straining second protrusion 2024 and the straining exhaust duct 102. The first seal element is preferably a first seal ring 205, and the second seal element is preferably a second seal ring 206, however, other manners that can be implemented by those skilled in the art, such as oil seals, etc., may also be used for the first seal element and the second seal element, and will not be described herein.
With reference to fig. 1, 4 and 7, the fine filter includes a fine filter body and a fine filter element 301, where the fine filter body includes a fine filter housing 302 and a fine filter upper cover 303 mounted on an upper portion of the fine filter housing 302 in a sealing manner, the lower portion of the fine filter housing 302 is integrated with the filter base 10, preferably, the fine filter upper cover 303 is provided with fine filter external threads, the upper portion of the fine filter housing 302 is provided with fine filter internal threads adapted to the fine filter external threads, and a fourth sealing element is provided between the fine filter upper cover 303 and the fine filter housing 302. The fourth sealing element is preferably a fourth sealing ring 304, however, other manners that can be implemented by those skilled in the art, such as an oil seal, etc., which are not described herein.
The filter base 10 is provided with a fine filter oil inlet channel 104, a fine filter oil outlet channel 105 and a fine filter oil outlet channel 106, wherein the fine filter oil inlet channel 104 is communicated with a cavity between a fine filter body and the filter element 301.
The fine filter cartridge 301 includes a fine filter upper end cap 3011, a fine filter lower end cap 3012, and a fine filter central tube 3013 provided between the fine filter upper end cap 3011 and the fine filter lower end cap 3012.
The fine filter further comprises a positive pressure side exhaust passage 305 penetrating through the fine filter upper end cover 3011, the fine filter central tube 3013 and the fine filter lower end cover 3012, the upper end of the positive pressure side exhaust passage 305 is located at the upper part of the fine filter body, the lower end of the positive pressure side exhaust passage 305 is communicated with the fine filter exhaust passage 106, a fine filter exhaust check valve 3051 is arranged in the positive pressure side exhaust passage 305, and the fine filter exhaust check valve 3051 is preferably a duckbill check valve.
The positive pressure side exhaust channel 305 may be an integral structure or a split structure, for convenience in installation and manufacture, preferably, the positive pressure side exhaust channel 305 includes a first exhaust pipe 3052 and a second exhaust pipe 3053 that are connected together in a sealing manner, a sealing ring 3054 is disposed between the first exhaust pipe 3052 and the second exhaust pipe 3053, an upper end of the first exhaust pipe 3052 is fixedly installed on an upper portion of the fine filter body, preferably, an upper end of the first exhaust pipe 3052 is clamped on the fine filter upper cover 303, the first exhaust pipe 3052 passes through the fine filter upper cover 3011 and extends into the fine filter central tube 3013, a fine filter second sealing element is disposed between the first exhaust pipe 3052 and a middle portion of the fine filter upper cover 3011, preferably, the fine filter second sealing element is a sealing ring 306, and the fine filter exhaust check valve 3051 is disposed in the first exhaust pipe 3052; a second exhaust conduit 3053 passes through the fine filter lower end cap 3012 and communicates with the fine filter drain passage 106.
In order to facilitate the gas discharge, the inlet end of the first exhaust pipe 3052 is a gas collecting portion 3055, the outlet end of the first exhaust pipe 3052 is an exhaust portion 3056, and the inner diameter of the gas collecting portion 3055 is larger than the inner diameter of the exhaust portion 3056.
The lower surface of the fine filtering upper end cover 3011 is provided with a fine filtering annular protrusion 3014 matched with the fine filtering central tube 3013, and the upper surface of the fine filtering lower end cover 3012 is provided with a fine filtering annular protrusion 3015 matched with the fine filtering central tube 3013.
In order to improve the utilization rate of the fine filter paper 3016, a plurality of fine filter support plates 3017 for supporting the fine filter paper 3016 are arranged on the periphery of the fine filter central tube 3013, a fine filter oil outlet 3018 is formed in the upper portion of the fine filter central tube 3013, and the fine filter central tube 3013 is communicated with the fine filter oil duct 105.
The lower surface of the fine filtering lower end cap 3012 is provided with a fine filtering first protrusion 3019 extending into the fine filtering exhaust duct 106, a fine filtering third sealing element is arranged between the fine filtering first protrusion 3019 and the fine filtering exhaust duct 106, the lower part of the fine filtering first protrusion 3019 is provided with a fine filtering second protrusion 3020 extending into the fine filtering exhaust duct 105, and a fine filtering first sealing element is arranged between the fine filtering second protrusion 3020 and the fine filtering exhaust duct 105. The first fine-filtering sealing element is preferably a first sealing ring 307, and the third fine-filtering sealing element is preferably a third sealing ring 308, however, other manners that can be implemented by those skilled in the art, such as oil seals, etc., may also be used for the first fine-filtering sealing element and the third fine-filtering sealing element, and will not be described herein.
In the present embodiment, the rough filter drain oil passage 103 and the fine filter drain oil passage 106 communicate.
The working principle is as follows:
the fuel enters the rough filtering shell 202 from the rough filtering inlet oil duct 101, is filtered by the rough filtering filter paper 2020, and then ascends to the rough filtering oil outlet 2022 of the rough filtering central pipe 2013 along a cavity formed between the rough filtering support plate 2021 and the rough filtering filter paper 2020, and then descends to enter the rough filtering outlet duct 102 through the inside of the rough filtering central pipe 2013, so that the whole rough filtering filter paper 2020 can be utilized for filtering, and the utilization rate of the rough filtering filter paper 2020 can be improved; then, the fuel enters an oil inlet of an oil delivery pump (not shown in the figure), then enters a fine filtering oil inlet channel 104 of a fine filter 30 through an oil outlet of the oil delivery pump, then enters a fine filtering shell 302, is filtered by a fine filtering paper 3016, and then ascends to a fine filtering oil outlet 3018 of a fine filtering central tube 3013 along a cavity formed between a fine filtering supporting plate 3017 and the fine filtering paper 3016, and then enters a fine filtering oil channel 105 through the inner descending of the fine filtering central tube 3013, so that the whole fine filtering paper 3016 can be utilized for filtering, and the utilization rate of the fine filtering paper 3016 can be improved.
Because the strainer 20 is positioned at the negative pressure side, gas is precipitated and then is gathered at the upper part of the strainer body, and the strainer exhaust one-way valve 2016 is automatically opened under the action of suction force, so that the gas gathered at the upper part can enter the negative pressure side exhaust pipe 2015 through the negative pressure side gas collecting pipe 2014 and the strainer exhaust one-way valve 2016, then enter the oil flowing in the strainer central pipe 2013 through the quantitative hole 2017, and flow along with the fuel, the gas can be effectively prevented from being gathered in the strainer, and the normal starting of an engine can be ensured; because the fine filter 30 is positioned at the positive pressure side, gas is accumulated on the upper part of the fine filter body after being separated out, and the fine filter exhaust check valve 3051 is opened under the pressure effect, so that the gas accumulated on the upper part can enter the positive pressure side exhaust channel 305, and is discharged into an oil tank through the fine filter exhaust duct 106 after descending, the gas can be effectively prevented from accumulating in the fine filter, and the normal starting of an engine is ensured.
When the filter cartridge 201 is replaced after a period of use, the upper cover 203 is unscrewed from the outer cover 202, the filter cartridge 201 is detached from the filter base 10, a new filter cartridge is mounted on the filter base 10, and the upper cover 203 is connected to the outer cover 202 in a threaded manner, so that the filter cartridge can be conveniently detached, maintenance is convenient, and cost is saved; in this process, when the coarse filter element 201 is detached, the fuel in the coarse filter housing 202 can flow back to the fuel tank through the coarse filter drain oil duct 103, so that pollution caused by fuel flowing to the external environment is avoided.
When the fine filter element 301 is replaced, the fine filter upper cover 303 is unscrewed from the fine filter shell 302, the fine filter element 301 is detached from the filter seat 10, a new fine filter element is arranged on the filter seat 10, and then the fine filter upper cover 303 is connected to the fine filter shell 302 in a threaded manner, so that the fine filter element can be conveniently detached, the maintenance is convenient, and the cost is saved; in this process, when the fine filter element 301 is detached, the fuel in the fine filter housing 302 can flow back to the fuel tank through the fine filter drain oil duct 106, so that the fuel is prevented from flowing to the external environment to cause pollution.
The fuel filter module provided by the embodiment of the invention integrates the coarse filter and the fine filter into a whole, so that the structure is compact; the gas can be effectively prevented from accumulating in the coarse filter and the fine filter, and the normal start of the engine is ensured; the coarse filter element and the fine filter element can be conveniently disassembled and assembled, so that the maintenance is convenient, and the cost is saved; can effectively avoid the pollution caused by the fuel flowing into the external environment.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The fuel filter module comprises a filter seat, a coarse filter and a fine filter, wherein the coarse filter comprises a coarse filter body and a coarse filter element, and the fine filter comprises a fine filter body and a fine filter element;
the filter seat is provided with a rough filtering oil inlet duct and a rough filtering oil outlet duct, and the rough filtering oil inlet duct is communicated with a cavity between the rough filtering body and the rough filtering filter element; the rough filtering filter element comprises a rough filtering upper end cover, a rough filtering lower end cover and a rough filtering central pipe arranged between the rough filtering upper end cover and the rough filtering lower end cover; a rough filtering oil outlet is formed in the rough filtering central pipe, and the rough filtering central pipe is communicated with the rough filtering oil outlet channel; a rough filtration first sealing element is arranged between the rough filtration lower end cover and the rough filtration oil outlet channel;
the middle part of the rough filtering upper end cover is provided with a negative pressure side gas collecting pipe, the negative pressure side gas collecting pipe penetrates through the rough filtering upper end cover and extends into the rough filtering central pipe, the lower end of the negative pressure side gas collecting pipe is connected with a negative pressure side exhaust pipe, the negative pressure side exhaust pipe is positioned in the rough filtering central pipe, the inlet end of the negative pressure side exhaust pipe is provided with a rough filtering exhaust one-way valve, and the outlet end of the negative pressure side exhaust pipe is provided with a quantitative hole;
the filter seat is provided with a fine filtering oil inlet duct, a fine filtering oil outlet duct and a fine filtering oil outlet duct, wherein the fine filtering oil inlet duct is communicated with a cavity between the fine filtering body and the fine filtering filter element;
the fine filter element comprises a fine filter upper end cover, a fine filter lower end cover and a fine filter central tube arranged between the fine filter upper end cover and the fine filter lower end cover; a fine filtering oil outlet is formed in the fine filtering central pipe, and the fine filtering central pipe is communicated with the fine filtering oil outlet channel; a fine filtration first sealing element is arranged between the fine filtration lower end cover and the fine filtration oil channel;
the fine filter further comprises a positive pressure side exhaust channel penetrating through the fine filter upper end cover, the fine filter central tube and the fine filter lower end cover, the upper end of the positive pressure side exhaust channel is located on the upper portion of the fine filter body, the lower end of the positive pressure side exhaust channel is communicated with the fine filter exhaust channel, and a fine filter exhaust one-way valve is arranged in the positive pressure side exhaust channel.
2. The fuel filter module according to claim 1, wherein a plurality of straining support plates for supporting straining filter paper are provided on the outer circumference of the straining central tube, and the straining oil outlet is provided at the upper part of the straining central tube; the periphery of the fine filtering central tube is provided with a plurality of fine filtering supporting plates for supporting fine filtering paper, and the fine filtering oil outlet is arranged on the upper part of the fine filtering central tube.
3. The fuel filter module of claim 1, wherein the negative pressure side header is an inverted cone negative pressure side header;
the positive pressure side exhaust channel comprises a first exhaust pipeline and a second exhaust pipeline which are connected together in a sealing way, the first exhaust pipeline is fixedly arranged at the upper part of the fine filtering body, the first exhaust pipeline penetrates through the fine filtering upper end cover and extends into the fine filtering central pipe, a fine filtering second sealing element is arranged between the first exhaust pipeline and the middle part of the fine filtering upper end cover, and the fine filtering exhaust check valve is arranged in the first exhaust pipeline; the second exhaust pipeline passes through the fine filtering lower end cover and is communicated with the fine filtering exhaust oil duct;
the inlet end of the first exhaust pipeline is a gas collecting part, the outlet end of the first exhaust pipeline is an exhaust part, and the inner diameter of the gas collecting part is larger than that of the exhaust part.
4. The fuel filter module of claim 1, wherein the coarse exhaust check valve is a duckbill check valve; the quantitative hole is arranged on the bottom surface of the negative pressure side exhaust pipe; the fine filtering exhaust one-way valve is also a duckbill one-way valve.
5. The fuel filter module according to any one of claims 1 to 4, wherein the coarse filter body includes a coarse filter housing and a coarse filter upper cover sealingly mounted on an upper portion of the coarse filter housing, a lower portion of the coarse filter housing being integrally provided with the filter base; the fine filtering body comprises a fine filtering shell and a fine filtering upper cover which is arranged on the upper portion of the fine filtering shell in a sealing mode, and the lower portion of the fine filtering shell and the filtering seat are integrated.
6. The fuel filter module according to claim 5, wherein the filter base is further provided with a rough filter drain oil duct, a lower surface of the rough filter lower end cover is provided with a rough filter first protrusion extending into the rough filter drain oil duct, a rough filter second sealing element is arranged between the rough filter first protrusion and the rough filter drain oil duct, a lower part of the rough filter first protrusion is provided with a rough filter second protrusion extending into the rough filter drain oil duct, and the rough filter first sealing element is arranged between the rough filter second protrusion and the rough filter drain oil duct; the lower surface of the fine filtering lower end cover is provided with a fine filtering first bulge extending into the fine filtering oil drain channel, a fine filtering third sealing element is arranged between the fine filtering first bulge and the fine filtering oil drain channel, the lower part of the fine filtering first bulge is provided with a fine filtering second bulge extending into the fine filtering oil drain channel, and the fine filtering first sealing element is arranged between the fine filtering second bulge and the fine filtering oil drain channel.
7. The fuel filter module of claim 6, wherein the coarse filter drain passage and the fine filter drain passage are in communication.
8. The fuel filter module according to claim 7, wherein the coarse filter upper cover is provided with coarse filter external threads, the upper part of the coarse filter housing is provided with coarse filter internal threads matched with the coarse filter external threads, and a coarse filter third sealing element is arranged between the coarse filter upper cover and the coarse filter housing; the fine filtering upper cover is provided with fine filtering external threads, the upper part of the fine filtering shell is provided with fine filtering internal threads matched with the fine filtering external threads, and a fourth sealing element is arranged between the fine filtering upper cover and the fine filtering shell.
9. The fuel filter module according to claim 5, wherein the negative pressure side header pipe is clamped on the rough filter upper cover; the positive pressure side exhaust channel is clamped on the fine filtering upper cover.
10. The fuel filter module of claim 1, wherein the lower surface of the coarse filter upper end cap and the upper surface of the coarse filter lower end cap are provided with coarse filter annular protrusions matched with the coarse filter central tube; the rough filtering upper end cover, the negative pressure side gas collecting tube, the negative pressure side exhaust tube and the rough filtering annular bulge of the rough filtering upper end cover are integrally arranged; the lower surface of the fine filtering upper end cover and the upper surface of the fine filtering lower end cover are both provided with fine filtering annular protrusions matched with the fine filtering central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134969.6A CN108131227B (en) | 2018-02-09 | 2018-02-09 | Fuel filter module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134969.6A CN108131227B (en) | 2018-02-09 | 2018-02-09 | Fuel filter module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131227A CN108131227A (en) | 2018-06-08 |
| CN108131227B true CN108131227B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810134969.6A Active CN108131227B (en) | 2018-02-09 | 2018-02-09 | Fuel filter module |
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| Country | Link |
|---|---|
| CN (1) | CN108131227B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482816B (en) * | 2021-08-16 | 2022-10-18 | 一汽解放汽车有限公司 | Fuel filter |
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| US5787865A (en) * | 1997-09-29 | 1998-08-04 | General Motors Corporation | Reservoir for motor vehicle fuel tank |
| DE19716085A1 (en) * | 1997-04-17 | 1998-10-22 | Knecht Filterwerke Gmbh | Automotive fuel filter |
| CN203925835U (en) * | 2014-06-16 | 2014-11-05 | 克拉克过滤器（中国）有限公司 | Fuel preliminary filter |
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| CN106523220A (en) * | 2016-12-29 | 2017-03-22 | 广西华原过滤***股份有限公司 | Novel two-stage fuel filtering system |
| CN207974905U (en) * | 2018-02-09 | 2018-10-16 | 克拉克过滤器（中国）有限公司 | Combustion filter module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003113953A (en) * | 2001-10-04 | 2003-04-18 | Kyosan Denki Co Ltd | Vent valve structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19716085A1 (en) * | 1997-04-17 | 1998-10-22 | Knecht Filterwerke Gmbh | Automotive fuel filter |
| US5787865A (en) * | 1997-09-29 | 1998-08-04 | General Motors Corporation | Reservoir for motor vehicle fuel tank |
| CN106211759A (en) * | 2013-12-12 | 2016-12-07 | 法国索盖菲过滤公司 | Fuel filter and the filter element with vehicle-mounted additive tank for this fuel filter |
| CN203925835U (en) * | 2014-06-16 | 2014-11-05 | 克拉克过滤器（中国）有限公司 | Fuel preliminary filter |
| CN106523220A (en) * | 2016-12-29 | 2017-03-22 | 广西华原过滤***股份有限公司 | Novel two-stage fuel filtering system |
| CN207974905U (en) * | 2018-02-09 | 2018-10-16 | 克拉克过滤器（中国）有限公司 | Combustion filter module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108131227A (en) | 2018-06-08 |
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| CB02 | Change of applicant information |
Address after: 261031 no.7336, Minzhu East Street, Weifang Economic Development Zone, Shandong Province Applicant after: Weifang Parker Hannifen Filtration System Co.,Ltd. Address before: 261031 no.7336, Minzhu East Street, Weifang Economic Development Zone, Shandong Province Applicant before: CLARCOR FILTER (CHINA) CO.,LTD. |
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