CN217976427U - Oil-water separation filter core and fuel filter - Google Patents

Abstract

The utility model discloses an oil-water separation filter element and a fuel filter, wherein the oil-water separation filter element comprises an oil guide pipe, a water blocking pipe and a filter medium, one end of the oil guide pipe is connected with an upper cover plate, and an air collecting cavity is formed in the oil guide pipe by the upper cover plate; the water blocking pipe is provided with a water blocking part positioned in the oil guide pipe, a water sedimentation channel is formed between the water blocking part and the inner wall of the oil guide pipe, a ventilation pin extends axially from the end face of one end of the water blocking part and is respectively communicated with the air collecting cavity and the outside, one end of the water blocking pipe is connected with the other end of the oil guide pipe, and an opening at the other end of the water blocking pipe is connected with a lower cover plate; the filter medium is arranged on the periphery of the oil guide pipe and the water blocking pipe, and two ends of the filter medium are respectively connected with the upper cover plate and the lower cover plate. The utility model discloses an oil-water separation filter core can improve the filtration efficiency of filter core and effectively discharge the gas that fuel feed system fuel sneaked into at the during operation.

Description

Oil-water separation filter core and fuel filter

Technical Field

The utility model relates to an internal-combustion engine fuel filters technical field, in particular to oil-water separation filter core and fires oil cleaner.

Background

When the internal combustion engine works, fuel is conveyed to a nozzle by a fuel supply system, a large negative pressure exists at the front end of a fuel pump, air dissolved in the fuel can overflow under the action of the negative pressure, the fuel pipeline and various connecting pieces can be sucked into the air due to poor sealing, water dissolved in the fuel can be evaporated to generate fuel steam after the fuel is heated, air can be mixed into the pipeline when a fuel filter is installed and maintained, and if the air is not discharged in time, air separation can be generated, so that the fuel supply of the fuel supply system is unstable, the problems of abnormal output power of the internal combustion engine, even flameout and the like are caused, and safety accidents are caused.

In the prior art, CN113586300A discloses an exhaust type fuel filter, which comprises a housing, a filter element assembly, and a screw sealing plate, wherein a water discharging assembly is installed at the bottom of the housing, an annular gasket is installed between the screw sealing plate and an upper end cover of the filter element assembly, and an exhaust passage is arranged inside the annular gasket. The technical scheme describes that when gas gathered in the filter passes through an oil outlet of the filter, the gas can pass through an exhaust channel of an annular gasket and is discharged from an oil inlet.

In the technical scheme, two ends of the exhaust passage are respectively and correspondingly communicated with the oil outlet and the oil inlet of the filter, so that part of unfiltered fuel oil enters the oil outlet from the oil inlet through the exhaust passage, the filtering efficiency of the filter is reduced, and the unfiltered fuel oil is fed into a fuel nozzle, so that the nozzle is easily blocked and damaged; secondly, the inside gas that gathers of this technical scheme filter is discharged from the oil inlet of filter, and the exhaust flow direction is opposite with the fuel oil flow direction, and the pressure of filter oil inlet is greater than the pressure of oil-out, leads to gaseous effectively discharge not.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an oil water separation filter core and fire oil filter, aim at solving present fuel oil filter and can not effectively discharged technical problem at the gas that the work produced.

In order to achieve the above object, the utility model provides an oil-water separation filter core, it includes:

one end of the oil guide pipe is connected with an upper cover plate, and an air collecting cavity is formed in the oil guide pipe by the upper cover plate;

the water blocking pipe is provided with a water blocking part positioned in the oil guide pipe, a water sedimentation channel is formed between the water blocking part and the inner wall of the oil guide pipe, a ventilation pin extends from the end surface of one end of the water blocking part along the axial direction and is respectively communicated with the air collecting cavity and the outside, one end of the water blocking pipe is connected with the other end of the oil guide pipe, and the opening of the other end of the water blocking pipe is connected with a lower cover plate; and (c) a second step of,

and the filter medium is arranged on the peripheries of the oil guide pipe and the water stop pipe, and two ends of the filter medium are respectively connected with the upper cover plate and the lower cover plate.

Optionally, a plurality of spiral ribs are arranged on the outer side wall of the oil guide pipe, and a fuel oil flow channel is formed between the ribs.

Optionally, an oil through hole is formed in the outer side wall of the oil guide pipe between the two ribs.

Optionally, the vent pin has a first pin communicating with the air collection chamber from the end face and a second pin communicating with the outside from the end face.

Optionally, the second pin has an aperture of 0.3-0.7mm.

Optionally, the air collection cavity is provided with a first through hole communicated with the first pin and a second through hole communicated with the outside, and the first pin is connected with the first through hole in a sealing manner.

Optionally, an elastic sealing element is arranged at the joint of the first pin and the first through hole.

Optionally, the other end of the water-blocking part is connected with a pipe wall of the main body of the water-blocking pipe, and a water drainage hole is arranged at the connection part and communicated with the water sedimentation channel to drain blocked water.

Optionally, the water blocking portion includes a water blocking medium and a pipe frame for fixing the water blocking medium.

Optionally, a flow guide rib is arranged on the pipe wall on the inner side of the oil guide pipe and close to the water-resisting part, and is used for positioning the water-resisting part.

The utility model also provides an oil filter fires, it includes:

the oil-water separation filter element is the oil-water separation filter element;

the oil-water separation filter element is arranged in the shell assembly.

Optionally, the housing assembly and the inner wall of the water blocking pipe form a water accumulation cavity, and a water drainage pipeline is arranged.

The technical scheme of the utility model, collect the chamber through the air that leads oil pipe and upper cover plate department setting and assembly intercommunication, and set up a breather pin and communicate the air respectively and collect chamber and external (like the oil tank), so that the filter is at the during operation, the breather pin can in time discharge external (like the oil tank) exhaust passage and oil-out with the gas in pipeline and the fuel in the assembly and separate each other, there is not filterable fuel and gets into the possibility that the oil-out was sent into fuel nozzle through exhaust passage, thereby filtration efficiency is improved, the nozzle has been protected, and effectively solve fuel supply system's exhaust problem.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art 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 the oil-water separation filter element provided by the present invention;

fig. 2 is a front view of an embodiment of the oil-water separation filter element provided by the present invention;

fig. 3 is a cross-sectional view of an embodiment of the oil-water separation filter element provided by the present invention;

fig. 4 is a cross-sectional view of an embodiment of a fuel filter provided by the present invention;

FIG. 5 is a schematic view of the flow of gas in the fuel filter according to the present invention;

fig. 6 is a cross-sectional view of another embodiment of the oil-water separation filter element provided by the present invention.

In the figure: an oil-water separation filter element-100, an oil guide pipe-1, a partition plate-11, ribs-12, a flow channel-13, an oil through hole-14, a flow guide rib-15, an upper cover plate-2, an air collecting cavity-21, a first through hole-211, a second through hole-212, a water blocking pipe-3, a water blocking part-31, a water settling channel-31 a, an end surface-31 b, a water blocking medium-311, a pipe frame-312, a ventilation pin-32, a first pin-321, a second pin-322, an elastic sealing element-323, a water discharging hole-33, a water accumulation cavity-34, a lower cover plate-4, a filtering medium-5, a first sealing ring-6, a second sealing ring-7, a fuel filter-200, a shell assembly-201, an exhaust pipeline-201 a, an oil pipeline-201 b, an oil inlet pipeline-201 d, and a central upright post-202.

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", and the like indicate the positional relationship based on the positional relationship shown in the drawings, and are only for convenience of describing the present invention, and do not indicate that the device to which the reference is made 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 herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The existing fuel filter has the following problems that two ends of an exhaust passage are respectively and correspondingly communicated with an oil outlet and an oil inlet of the filter, so that part of unfiltered fuel oil enters the oil outlet from the oil inlet through the exhaust passage, and the filtering efficiency of the filter is reduced; secondly, the inside gas of gathering of this technical scheme filter is discharged from the oil inlet of filter, and the exhaust flow direction is opposite with the fuel flow direction, and the pressure of filter oil inlet is greater than the pressure of oil-out, leads to gaseous effectively discharge not.

In view of this, the present invention provides an oil-water separation filter element, fig. 1-4 show an embodiment of the oil-water separation filter element provided by the present invention, please refer to fig. 1-4, the oil-water separation filter element 100 includes an oil conduit 1, a water blocking pipe 3 and a filter medium 5.

The upper end of the oil conduit 1 is connected with an upper cover plate 2, the upper cover plate 2 extends axially into the oil conduit 1 to form an air collection cavity 21, specifically, referring to fig. 1 and 2, a partition plate 11 is arranged in the oil conduit 1, a space defined by the partition plate 11 and the upper cover plate 2 is the air collection cavity 21, and the air collection cavity 21 is communicated with the interior of the assembly to collect gas brought into the assembly by the pipeline and the fuel oil; the water blocking pipe 3 is provided with a water blocking part 31 positioned in the oil guide pipe 1, the water blocking part 31 is used for blocking water in fuel oil and allowing the fuel oil to pass through to an engine nozzle, the outer side of the water blocking part 31 for blocking water and the inner wall of the oil guide pipe 1 form a water settling channel 31a, and the fuel oil passes through the water settling channel 31a, so that the blocked water is deposited at the bottom of the water settling channel; in addition, an end surface 31b of one end of the water-blocking portion 31, which is the end surface 31b facing the air collection chamber 21 in this embodiment, extends axially with a vent pin 32, the vent pin 32 is integrally formed on the end surface 31b and respectively communicates the air collection chamber 21 with the outside (such as a fuel tank), and the vent pin 32 can discharge the gas brought into the assembly by the pipeline and the fuel to the outside; one end of the main body of the water-blocking pipe 3 is connected with the other end of the oil guide pipe 1, namely two tubular objects are correspondingly connected, and the opening at the other end of the main body of the water-blocking pipe 3 is connected with a lower cover plate 4; the filtering medium 5 is sleeved on the peripheries of the oil guide pipe 1 and the water blocking pipe 3, and two ends of the filtering medium are respectively connected with the upper cover plate 2 and the lower cover plate 4. It should be noted that the filter medium 5 is a filter medium with hydrophilicity, and can absorb water with fine particle size in fuel oil and make it gather into water with relatively large particle size, and at the same time, can filter out particulate matter impurities, in this embodiment, the connection mode between the oil conduit 1 and the upper cover plate 2, and between the filter medium 5 and the upper cover plate 2 and the lower cover plate 4 is hot-melt welding, and certainly, other connection modes such as gluing may also be adopted, and are not enumerated one by one here.

The technical scheme of the utility model among, collect chamber 21 through the air that leads oil pipe 1 and upper cover plate 2 department setting and assembly intercommunication to set up a breather pin 32 and communicate air respectively and collect chamber 21 and external (like the oil tank), so that the filter at the during operation, breather pin 32 can be with the pipeline and during the gas outgoing to the external world that brings in the fuel, and can improve the filter efficiency of filter core at the during operation.

Referring to fig. 1 and 2, in an embodiment of the present invention, a plurality of spiral ribs 12 are disposed on an outer sidewall of the oil conduit 1, and gaps between the ribs 12 form a fuel flow channel 13.

Further, referring to fig. 2, an oil through hole 14 is formed in the outer side wall of the oil guide pipe 1, the oil through hole 14 is located between the two ribs 12, and the fuel oil and the water with a larger particle size filtered by the filter medium 5 are sequentially conducted by the spiral flow channel 13 to flow to the oil through hole 14 and enter the water settling channel 31a inside the oil guide pipe 1. The number of the oil passage holes 14 may be plural, and may be appropriately selected according to the number of the fins 12.

Referring to fig. 3, in an embodiment of the present invention, the vent pin 32 has a first pin 321 communicating with the air collection chamber 21 from the end surface 31b and a second pin 322 communicating with the outside (such as an oil tank) from the end surface 31b. It should be understood that the water-blocking pipe 3 and the oil conduit 1 are installed separately, and therefore, in this embodiment, the first pin 321 is connected to the air collection chamber 21 in an abutting and sealing manner. Of course, the embodiment of the present invention is not limited thereto, and the first pin 321 may be integrally formed with the air collecting cavity 21, that is, the first pin 321 axially extends from the partition plate 11, and the second pin 322 abuts against the end surface 31b.

Further, said air collection chamber 21 is provided with a first through hole 211 communicating with said first pin 321 and a second through hole 212 communicating with the interior of the assembly. In this embodiment, the first through hole 211 is formed in the center of the partition 11, and the first through hole 211 is a long channel; the second through hole 212 is formed in the upper cover 2, and the first pin 321 is coupled to the first through hole 211 in a sealing manner. It should be noted that the aperture of the first pin 321 is much larger than that of the second pin 322, so that the installation is more convenient and the pins are not easily damaged.

In addition, referring to fig. 6, fig. 6 shows another embodiment of the oil-water separation filter element provided by the present invention, wherein the first through hole 211 is a circular through hole. The difference from the previous embodiment is that the space of the air collection chamber 21 is larger with this structure.

Furthermore, an elastic sealing element 323 is arranged at the joint of the first pin 321 and the first through hole 211, and by arranging the elastic sealing element 323, the sealing effect between the first pin 321 and the first through hole 211 can be improved, and gas and unfiltered fuel can be prevented from entering the oil conduit 1 to the engine. It should be noted that the elastic sealing element 323 is made of rubber, but other materials with sealing effect may also be used, and details are not described here.

In an embodiment of the present invention, the aperture of the second pin 322 is 0.3-0.7mm, the aperture is selected to allow the gas to pass through quickly and allow a small amount of fuel to pass through, the too small aperture easily causes the blockage and cannot discharge the collected gas quickly, however, the too large aperture may cause the fuel to be discharged in a large amount to cause the fuel supply pressure loss, and may also cause the fuel supply pressure to be insufficient.

In an embodiment of the present invention, the other end of the water-blocking portion 31 is connected to the pipe wall of the main body of the water-blocking pipe 3, it should be noted that the water-blocking portion 31 is also tubular, and the other end of the water-blocking portion 31 is integrally formed with the main body of the water-blocking pipe 3. Since the size of the water-blocking portion 31 is smaller than that of the main body of the water-blocking pipe 3, a drainage hole 33 can be formed at the connection between the two, please refer to the figure, the drainage hole 33 communicates with the water sedimentation channel 31a, and a water accumulation cavity 34 is formed in the main body of the water-blocking pipe 3 to collect and contain the water which is separated and settled, and the water is discharged by the assembly.

Referring to fig. 1, it should be noted that the water blocking portion 31 includes a water blocking medium 311 disposed in a tubular shape and a pipe frame 312 for fixing the water blocking medium 311. The water blocking medium 311 is an oil-water separation membrane and has the characteristic of hydrophobic oil passing, the pipe frame 312 and the water blocking medium 311 are integrally formed in an injection molding mode, and the end cover is integrally formed at the top end of the pipe frame 312. The base of the pipe frame 312, that is, the base of the water blocking part 31, is integrally formed with the water blocking pipe 3.

Referring to fig. 4, in an embodiment of the present invention, a plurality of flow guiding ribs 15 are disposed on a pipe wall inside the oil guiding pipe 1, and the flow guiding ribs 15 are close to the water blocking portion 31 for positioning the water blocking portion 31 and preventing the water blocking portion 31 from shaking, so that the sealing effect of the elastic sealing member 323 is deteriorated.

The utility model discloses still provide an oil filter fires, fig. 4-5 are the utility model provides an oil filter fires embodiment, please refer to fig. 4-5, fire oil filter 200 and include oil-water separation filter core and shell assembly 201. The housing assembly 201 is provided with a central upright column 202, wherein the oil-water separation filter element is the oil-water separation filter element 100, the oil-water separation filter element 100 is arranged inside the housing assembly 201 and sleeved on the central upright column 202, and the joint is sealed by a first sealing ring 6 and a second sealing ring 7.

Specifically, referring to fig. 4, the central pillar 202 is provided with openings respectively communicating with the pipelines, the exhaust pipeline 201a and the oil outlet pipeline 201b of the housing assembly 201 are both arranged in the water-blocking portion 31, and the exhaust pipeline 201a is communicated with the second pin 322; in addition, still be equipped with drain line 201c, drain line 201c communicates with ponding chamber 34 that the inner wall of water blocking pipe 3 formed, ponding chamber 34 and fuel oil inlet channel 201d, oil outlet line 201b are separated by first sealing ring 6, first sealing ring 7.

Referring to fig. 4 and 5, during operation of the filter, fuel mixed with air enters the assembly, passes through the air collection chamber 21, enters the exhaust line 201a, and is then discharged to the outside (e.g., a tank).

It should be understood that a water level sensor and a drain (not shown) are also provided on the housing assembly 201. The water level sensor is used for monitoring the water level height of the water accumulation cavity so as to prompt drainage treatment when water in the fuel oil is deposited to a certain height.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification 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 (10)

1. An oil-water separation filter element, comprising:

an upper cover plate (2) is connected to one end of the oil guide pipe (1), and an air collecting cavity (21) is formed in the oil guide pipe (1);

the water blocking pipe (3) is provided with a water blocking part (31) positioned in the oil guide pipe (1), a water sedimentation channel (31 a) is formed between the water blocking part (31) and the inner wall of the oil guide pipe (1), a ventilation pin (32) extends from the end surface (31 b) of one end of the water blocking part (31) along the axial direction, the ventilation pin (32) is respectively communicated with the air collecting cavity (21) and the outside, the outer pipe wall of the main body of the water blocking pipe (3) is connected with the other end of the oil guide pipe (1), and the opening of the other end of the main body of the water blocking pipe (3) is connected with a lower cover plate (4); and the number of the first and second groups,

and the filter medium (5) is arranged on the periphery of the oil guide pipe (1) and the water blocking pipe (3), and two ends of the filter medium (5) are respectively connected with the upper cover plate (2) and the lower cover plate (4).

2. The filter element according to claim 1, wherein the oil conduit (1) is provided on its outer side wall with a plurality of spiral ribs (12), and a fuel flow channel (13) is formed between the ribs (12).

3. The filter cartridge according to claim 2, characterized in that the outer wall of the oil conduit (1) is provided with oil through holes (14) between the ribs (12).

4. The filter cartridge according to claim 3, wherein the vent pin (32) has a first pin (321) communicating from the end surface (31 b) to the air collection chamber (21), and a second pin (322) communicating from the end surface (31 b) to the outside.

5. The oil-water separation filter element as claimed in claim 4, characterized in that the air collection chamber (21) is provided with a first through hole (211) communicating with the first pin (321) and a second through hole (212) communicating with the interior of the assembly, the first pin (321) being sealingly connected to the first through hole (211).

6. The oil-water separation filter element as claimed in claim 5, wherein an elastic sealing member (323) is provided at the connection of the first pin (321) and the first through hole (211).

7. The filter element according to claim 2, characterized in that the other end of the water-blocking part (31) is connected to the outer wall of the main body of the water-blocking pipe (3), and a drain hole (33) is provided at the connection, the drain hole (33) is communicated with the water-settling passage (31 a) for draining the blocked water.

8. The oil-water separation filter cartridge according to claim 2, wherein the water blocking portion (31) comprises a water blocking medium (311) and a pipe frame (312) for fixing the water blocking medium (311).

9. The oil-water separation filter element according to claim 7, wherein a flow guiding rib (15) is arranged on the inner side of the oil guiding pipe (1) and close to the water-blocking part (31) and used for positioning the water-blocking part (31).

10. A fuel filter, comprising:

an oil-water separation filter element according to any one of claims 1 to 9;

the oil-water separation filter element is arranged in the shell assembly.

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