CN218188413U - Fuel oil multistage filtering device - Google Patents

Abstract

The utility model discloses a fuel multistage filter equipment. The fuel multistage filtering device comprises a shell, a primary filtering body and a secondary filtering body, wherein the primary filtering body and the secondary filtering body are respectively arranged inside and outside the shell; the primary filter body comprises a support fence, a particulate matter filter medium sleeved on the periphery of the support fence, and end covers connected with two ends of the particulate matter filter medium, and is provided with a non-filter side dirt holding cavity, the non-filter side dirt holding cavity is communicated with the first channel, and the primary filter body and the shell form a filter side cleaning cavity; the secondary filter body is provided with a second channel for fuel oil to flow out of the secondary filter body for water and oil blocking. The utility model discloses a fuel multi-stage filtration device can make it arrange more particulate matter filter medium and water collecting medium in finite space, increases its effective filter area, has promoted the filter capacity and the life of filter core in the unit volume.

Description

Fuel oil multistage filter device

Technical Field

The utility model relates to a fuel filters technical field, in particular to internal-combustion engine fuel feed system's fuel multistage filter equipment.

Background

Water and particulate impurities in fuel are extremely harmful to the fuel supply system of an internal combustion engine: the presence of moisture can lead to poor lubrication, causing wear and corrosion of the fuel injector and the high pressure pump; particulate matter impurities (e.g., dust, metal dust, etc.) can accelerate high pressure pump wear and cause injector plugging.

A fuel oil filter with an oil-water separation function is generally arranged in a fuel oil supply system to clean fuel oil and remove water and particulate impurities in the fuel oil. With the progress of technology, the development of internal combustion engines towards high efficiency and energy conservation requires filters meeting lightweight design and having higher filtering performance and service life.

Most current fuel filters use a cylindrical filter for filtration, a particulate filter disposed within a tubular housing, and a water separator, typically concentrically oriented in a central portion of the tubular housing relative to the filter media, to reduce particulate matter and moisture in the fuel prior to delivery to the engine. However, the space of the cylindrical filter used in the flat and narrow space layout of the vehicle cannot be effectively and fully utilized, the size of the filter is usually made to be relatively small, and the performance requirements of long service life and high-efficiency filtration of the modern engine fuel filter are difficult to meet.

In the prior art, patent US10253738B2 discloses a filter assembly for filtering diesel fuel for diesel engines, which is shaped with a relatively flat rectangular parallelepiped configuration and utilizes one side of the rectangular parallelepiped for fuel filtration. The filter designed by the scheme is similar to the filter, because the other surfaces of the cuboid are not provided with the filter media for filtering, the filtering area is not maximized in a limited space, the flow rate and the resistance of fuel passing through the filter media in unit area are in a strong negative correlation with the size of the filtering area, the reduction of the filtering area increases the flow rate and the flow resistance in unit area under the condition of certain fuel flow, the increase of the flow rate and the flow resistance in unit area directly reduces the filtering capacity of the filter, and simultaneously, the reduction of the filtering area reduces the capacity of the filter for intercepting and containing impurities and the oil-water separation efficiency, so the filtering performance and the service life of the cuboid filter designed by the scheme are hardly substantially improved or the filter media with higher performance are required to be configured to meet the requirements.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fuel multistage filter device aims at solving the technical problem that the filtering quality of filter core is poor and life is short in the unit volume.

The above technical object of the present invention can be achieved by the following technical solutions.

A fuel multistage filter assembly disposed within an outer assembly, comprising:

the fuel oil inlet device comprises a shell, a fuel oil inlet pipe, a fuel oil outlet pipe and a fuel oil inlet pipe, wherein the shell is provided with a first channel for flowing fuel oil and is provided with at least two hollow surfaces;

the primary filter body is arranged in the shell and comprises a support fence, a particulate matter filter medium sleeved on the periphery of the support fence, and end covers connected with two ends of the particulate matter filter medium, a non-filtering side dirt containing cavity is formed and communicated with the first channel, and a filtering side cleaning cavity is formed by the primary filter body and the shell; and the number of the first and second groups,

and the secondary filter body is arranged on the outer side of the shell and used for blocking water and communicating oil, and is provided with a second channel for flowing fuel oil out of the secondary filter body.

Optionally, the housing includes a cover plate and a base, the base is provided with an opening, and the opening is closed by the cover plate.

Optionally, each hollow surface is arranged on the cover plate and the base;

the hollow surface is embedded with a water-collecting medium and covered by the water-collecting medium, and is used for collecting water and filtering out fuel oil in the filter side cleaning cavity.

Optionally, one end cover of the primary filter body is provided with an oil through port communicated with the first channel.

Optionally, the closing manner of the cover plate and the base includes one or a combination of welding, gluing, buckling and clamping.

Optionally, a fastener is disposed at an edge of the cover plate, a fastener is disposed at an opening of the base, and the fastener are correspondingly fastened to seal the cover plate to the base.

Optionally, the support fence has a plurality of transverse ribs, each of the transverse ribs being staggered and spaced apart.

Optionally, the secondary filter body includes a tubular water-blocking medium and a pipe frame for fixing the water-blocking medium, and the pipe frame is mounted on the mounting clamp on one side of the housing.

Optionally, the installation fastener is the clamp, the pipe support card is established on the clamp.

In the technical scheme of the utility model, a primary filter body is arranged in a shell with at least two hollow surfaces, and a particulate matter filter medium is shaped through a support fence and an end cover, so that a non-filtering side dirt holding cavity is formed; during filtering, fuel enters the non-filtering side dirt containing cavity from the first channel connected with the outside of the shell, enters the filtering side cleaning cavity after passing through the particulate matter filtering medium, completes filtering of particulate pollutants of the fuel oil, then coalesces fine particulate water in the fuel oil through the water-collecting medium embedded on the hollow surface of the shell, enters the secondary filter body, forms interception of water and separation of water in the fuel oil through natural sedimentation of the water in the fuel oil by utilizing the water-blocking medium, and finally clean fuel oil is sent to the engine injection system. The utility model discloses a fuel multistage filter equipment, can make it arrange more particulate matter filter medium and water-collecting medium in finite space, increase its effective filter area, effective filter area's increase can reduce the unit area velocity of flow that the fuel passes through the filter core and reduce the resistance that the fuel passes through the filter core (reduce the energy consumption), improve particulate matter filtration efficiency and can hold more particulate matter impurity, the unit area velocity of flow that the fuel passes through the filter core simultaneously reduces the coalescence that is favorable to the fuel normal water, promote the water oil separating efficiency of filter core, reach the filter capacity of filter core in the unit volume and the effect of life's two promotions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded view of an embodiment of a fuel multistage filtering device provided by the present invention;

fig. 2 is a three-dimensional structure diagram of an embodiment of the fuel multistage filtering device provided by the present invention;

FIG. 3 is a perspective view of the cover plate and the water-collecting medium of FIG. 1;

FIG. 4 is a perspective view of the primary filter of FIG. 1;

FIG. 5 is an exploded view of the primary filter body of FIG. 1;

FIG. 6 is a perspective view of the support fence of FIG. 5;

FIG. 7 is an exploded view of the secondary filter of FIG. 1;

fig. 8 isbase:Sub>A cross-sectional view taken along the planebase:Sub>A-base:Sub>A in fig. 2.

In the figure: the fuel multistage filtering device comprises a fuel multistage filtering device 100, a shell 1, a first channel 11, a hollowed surface 12, a water-collecting medium 121, a cover plate 13, a clamping piece 131, a first clamping foot 131a, a base 14, an opening 141, a buckling piece 142, a second clamping foot 142a, an installation clamping piece 15, an electric connector 16, a primary filtering body 2, a supporting fence 21, a transverse rib 211, a vertical rib 212, a particulate matter filtering medium 22, a non-filtering side 221, a filtering side 222, an end cover 23, an oil through port 231, a non-filtering side dirt containing cavity 24, a filtering side cleaning cavity 25, a secondary filtering body 3, a second channel 31, a water-blocking medium 32 and a pipe frame 33.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For a better description and illustration of embodiments of the application, reference may be made to one or more of the drawings, but additional details or examples for describing the drawings should not be construed as limiting the scope of any of the inventive concepts of the present application, the presently described embodiments, or the preferred versions.

In the description of the present invention, it should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the positional relationship based on the positional relationship shown in the drawings, and are only for convenience of description of the present invention, but do not indicate that the device referred to must have a specific orientation or be operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

In the prior art, patent US10253738B2 discloses a filter assembly for filtering diesel fuel for diesel engines, which is shaped with a relatively flat rectangular parallelepiped configuration and utilizes one side of the rectangular parallelepiped for fuel filtration. The filter designed by the scheme does not have a filtering medium arranged on other surfaces of the cuboid for filtering, so that the filtering area is not maximized in a limited space, as known from fluid mechanics and filtering knowledge, the unit area flow rate and resistance of fuel passing through the filtering medium are in a strong negative correlation with the filtering area, the unit area flow rate and the flow resistance are increased by reducing the filtering area under the condition of a certain fuel flow, the filtering capacity of the filter is directly reduced by increasing the unit area flow rate and the flow resistance, and the capacity of intercepting and containing impurities and the oil-water separation efficiency of the filter are reduced by reducing the filtering area, so that the filtering performance and the service life of the cuboid filter designed by the scheme are hardly substantially improved or the requirement can be met by configuring a filtering medium with higher performance.

In view of this, the present invention provides a fuel multistage filtering device, fig. 1-8 show an embodiment of the fuel multistage filtering device provided by the present invention, please refer to fig. 1-8, the fuel multistage filtering device 100 includes a casing 1, a first-stage filtering body 2 and a second-stage filtering body 3.

Specifically, referring to fig. 1, the housing 1 is square, a first channel 11 through which fuel flows into the housing 1 is formed on the surface of the housing 1, and two side surfaces of the housing 1 are symmetrically provided with hollow surfaces 12; the primary filter body 2 install in inside the casing 1, the primary filter body 2 includes support fence 21, cover and establishes support fence 21 outlying particulate matter filter media 22 and the end cover 23 that links to each other with particulate matter filter media 22 both ends, end cover 23 is used for sealing particulate matter filter media 22's opening side to in inside form non-filtration side and hold dirty chamber 24, in this embodiment, non-filtration side hold dirty chamber 24 through the apron 13 on the opening with first passageway 11 communicates. And the periphery of the primary filter body 2, namely the filter side 222 and the shell 1 form a filter side cleaning cavity 25; the secondary filter body 3 is arranged on the outer side of the shell 1 and used for blocking moisture and passing through fuel oil, and the secondary filter body 3 is provided with a second channel 31 through which the fuel oil flows out to the outside of the secondary filter body and enters the engine. The particulate filter medium 22 is filter paper, the inner side of the particulate filter medium 22 is a non-filtering side 221, and the outer side is a filtering side 222.

When filtering, referring to fig. 8, the fuel oil containing impurities enters the non-filtering side dirt holding cavity 24 from the first channel 11, after the impurities are removed by the particulate matter filtering medium 22, the fuel oil is filtered into the filtering side cleaning cavity 25, enters the outer side of the secondary filter body 3 through the hollow surface 12, and is finally pumped into the engine after water blocking. It should be noted that the hollow surface 12 may have a plurality of hollow surfaces 12 according to the design of the housing 1, in this embodiment, the housing 1 is square, and a maximum of 6 hollow surfaces may be provided.

In the technical scheme of the utility model, a primary filter body 2 is arranged in a shell 1 with at least two hollow surfaces, and a particulate matter filter medium 22 is shaped through a support fence 21 and an end cover 23, so that a non-filtering side dirt holding cavity 24 with a plurality of non-filtering sides 221 is formed; during filtering, the fuel enters the filter side cleaning cavity 25 from a plurality of filter sides, enters the secondary filter body 3 through the hollow surfaces 12, and is finally pumped into the engine.

The utility model discloses a fuel multistage filter equipment, can make it arrange more particulate matter filter media 22 and water-collecting medium 121 in finite space, increase its effective filter area, effective filter area's increase can reduce the unit area velocity of flow that the fuel passes through the filter core and reduce the resistance that the fuel passes through the filter core (reduce the required energy consumption of pump oil), thereby improve particulate matter filtration efficiency and can hold more particulate matter impurity, the unit area velocity of flow that the fuel passes through the filter core simultaneously reduces the coalescence that is favorable to the fuel normal water, promote the water oil separating efficiency of filter core, reach the filter capacity of filter core in the unit volume and the effect of the two promotions of life.

In some embodiments of the present invention, the housing 1 comprises at least one cover plate 13 and a base 14, the side of the base 14 is provided with at least one opening 141, the opening 141 is closed by the cover plate 13, and the first channel 11 is provided on the base 14. In the present embodiment, the number of the cover plate 13 is 1, and one side surface of the base 14 is correspondingly provided with 1 opening 141; of course, the number of the cover plate 13 and the opening 141 may be 2 or more according to the assembly manner of the housing 1, and detailed description thereof is omitted.

Referring to fig. 1 and 3, the hollow surfaces 12 are respectively disposed on the cover plate 13 and the base 14. In this embodiment, the cover plate 13 and one surface of the base 14 opposite to the cover plate 13 are hollowed-out surfaces 12, and of course, the square-structured housing 1 can have 6 hollowed-out surfaces 12 at most, preferably 2 in this embodiment; the hollow-out surface 12 is provided with a water-collecting medium 121, the water-collecting medium 121 covers the hollow-out surface 12 and seals the hollow-out part of the hollow-out surface 12, and the water-collecting medium 121 can collect water and filter out fuel oil in the filter side cleaning cavity 25. It should be noted that the water-collecting medium 121 may be a non-woven fabric or other materials capable of absorbing moisture, and the water-collecting medium 121 is integrated with the hollowed-out surface 12 by injection-insert molding, welding or adhesive bonding, wherein injection-insert molding may be preferably adopted to make the structure more compact.

Referring to fig. 4, an end cap 23 of the primary filter body 2 is provided with an oil through hole 231 communicated with the first channel 11, so that the fuel enters the non-filter side dirt holding cavity 24 through the oil through hole 231.

In some embodiments of the present invention, the cover plate 13 and the base 14 are sealed by one or a combination of welding, gluing, fastening, and clamping. It should be noted that the cover plate 13 and the base 14 are made of plastic. Wherein, the welding mode can preferably adopt ultrasonic welding.

In some embodiments of the present invention, please refer to fig. 1, 3 and 8, a fastening portion 131 is disposed at an edge of the cover plate 13, a fastening portion 142 is disposed at an opening portion 141 of the base 14, and the fastening portion 131 and the fastening portion 142 are correspondingly fastened to seal the cover plate 13 to the base 14. Certainly, the fastening portion 131 and the fastening portion 142 can be directly fastened or ultrasonically welded to achieve sealing, or a sealant or a sealing member is added between the fastening portion 131 and the fastening portion 142, please refer to fig. 1 and 3, and meanwhile, in order to increase the connection strength between the cover plate 13 and the base 14, a plurality of first fastening pins 131a and second fastening pins 142a which are mutually used for fastening are respectively arranged on the cover plate 13 and the base 14, the first fastening pins 131a and the second fastening pins 142a can be arranged on the inner side or the outer side of the base, at this time, inner fastening or outer fastening is formed, please refer to fig. 1, as inner fastening is preferentially adopted, the connection is more reliable, and the appearance is more aesthetic. Referring to fig. 8, the end caps 23 and the particulate filter medium 22 may be welded, adhered, and thermally cured to seal the openings at the two ends. The preferential adoption of the hot melting welding has higher production efficiency. Furthermore, the support grid 21 abuts against the end cap 23 in the non-filter-side dirt-containing chamber 24; the support grid 21 may act as a support in that the particulate filter media 22 may soften over a prolonged period of immersion to collapse.

In an embodiment of the present invention, referring to fig. 5, the supporting fence 21 has a plurality of transverse ribs 211, and the transverse ribs 211 are staggered and spaced in a vertical direction. In this embodiment, the transverse ribs 211 are parallel to each other and have the same length, and extend the particulate filter medium 22 into a flat rectangular parallelepiped structure, which allows the particulate filter medium 22 to have the largest contact area within the limited non-filter side dirt-receiving chamber 24. It should be noted that the support fence 21 further has a plurality of vertical ribs 212 integrally formed with the transverse ribs 211, and the transverse ribs 211 are staggered and distributed at intervals on the vertical ribs 212 to form the support fence 21.

In an embodiment of the present invention, referring to fig. 5, the end of each transverse rib 211 abuts against the particulate filter medium 22 to form a non-filtering side dirt-containing chamber 24. The fuel diffuses into the rearward chamber. Of course, the present invention is not limited to this embodiment, and in other embodiments, the transverse ribs 211 on the support fence 21 may also be disposed to intersect with each other, and may also support the particulate filter medium 22 into a rectangular structure.

In some embodiments of the present invention, please refer to fig. 7, the secondary filter body 3 includes a tubular water blocking medium 32 and a pipe frame 33, the water blocking medium 32 is a mesh for separating oil and water, and has a characteristic of draining oil, the pipe frame 33 and the water blocking medium 32 are integrally injection molded, the housing 1 is provided with an installation clamping member 15 on one side, the pipe frame 33 is installed on the installation clamping member 15, and in this embodiment, the installation clamping member 15 is a clamp. In addition, the second channel 31 is with water-blocking medium 32 communicates to in sending the fuel of getting rid of moisture into the engine, the second channel 31 is including being used for sealing cover 311 and oil pipe 312 that are connected with the external world, oil pipe 312 locate inside water-blocking medium 32 and with pipe support 33 sealing connection, sealing cover 311 buckle with oil outlet department of oil pipe 312.

It should be noted that the fuel multistage filtering device 100 is placed in an assembly filter chamber (not shown in the figure) and connected with the assembly filter chamber through the first channel 11 and the second channel 31, and the fuel flows out from the first channel 11 connected with the assembly filter chamber through the non-filtering side dirt holding cavity 24, the particulate matter filtering medium 22, the filtering side cleaning cavity 25, the water collecting medium 121, the secondary filter body 3 and the second channel 31 connected with the assembly filter chamber in sequence and is pumped into the engine.

In addition, the assembly filter chamber is provided with a grounding wire and a water level sensor for conducting static electricity. Wherein the grounding wire is electrically connected to the electrical connector 16 on the base 14, the electrical connector 16 is electrically connected to one of the end caps 23 of the primary filter body 2, so as to guide static electricity generated in the particulate filter medium 22 by the fuel to the outside, and of course, the end cap 23 is made of a conductive material; in addition, the assembly filter chamber is also provided with a valve for draining water, and the valve and the water level sensor are arranged in an interlocking manner so as to deposit water in fuel oil to a certain height and send a drainage alarm for drainage treatment.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (8)

1. A fuel multistage filter device, characterized by comprising:

a housing (1) provided with a first channel (11) for fuel to flow into and having at least two hollowed-out surfaces (12);

the primary filter body (2) is arranged in the shell (1), the primary filter body (2) comprises a supporting fence (21), a particulate matter filtering medium (22) sleeved on the periphery of the supporting fence (21) and end covers (23) connected with two ends of the particulate matter filtering medium (22), a non-filtering side dirt containing cavity (24) is formed, the non-filtering side dirt containing cavity (24) is communicated with the first channel (11), and the primary filter body (2) and the shell (1) form a filtering side cleaning cavity (25); and (c) a second step of,

the secondary filter body (3) is arranged on the outer side of the shell (1) and used for blocking water and leading oil, and the secondary filter body (3) is provided with a second channel (31) through which fuel oil flows out of the secondary filter body.

2. The fuel multistage filter device according to claim 1, characterized in that said housing (1) comprises a cover plate (13) and a base (14), said base (14) being provided with an opening (141), said opening (141) being closed by said cover plate (13).

3. The fuel oil multistage filter device according to claim 2, characterized in that each hollowed-out surface (12) is arranged on the cover plate (13) and the base (14);

the hollow-out surface (12) is embedded with and covered by a water-collecting medium (121) for collecting water and filtering out fuel oil in the filter side cleaning cavity (25).

4. A fuel multistage filter device according to claim 2, characterized in that one of the end caps (23) of the primary filter body (2) is provided with an oil through port (231) communicating with the first passage (11).

5. The fuel oil multistage filtering device according to claim 2, characterized in that the closing manner of the cover plate (13) and the base (14) comprises one or a combination of welding, gluing, buckling and clamping.

6. The fuel oil multi-stage filtering device according to any one of claims 2-5, characterized in that the edge of the cover plate (13) is provided with a fastener (131), the opening part (141) of the base (14) is provided with a fastener (142), and the fastener (131) is correspondingly clamped with the fastener (142) so as to enable the cover plate (13) to be closed on the base (14).

7. The fuel multistage filtering device as set forth in claim 1, characterized in that said support grid (21) has a plurality of transverse ribs (211), said transverse ribs (211) being alternately spaced.

8. The fuel multistage filter device according to claim 1, characterized in that said secondary filter body (3) comprises a water-blocking medium (32) in the form of a tube and a tube holder (33) for fixing said water-blocking medium (32), said tube holder (33) being mounted on a mounting clip (15) on one side of said housing (1).

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