CN211008928U

CN211008928U - Fuel filter base and fuel filter assembly

Info

Publication number: CN211008928U
Application number: CN201921026543.5U
Authority: CN
Inventors: 赵旻; 何晓峰; 卢增彩; 徐辉
Original assignee: Shanghai Fleetguard Filter Co ltd
Current assignee: Shanghai Fleetguard Filter Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-07-14
Anticipated expiration: 2029-07-03

Abstract

The utility model discloses a fire oil cleaner base and fire oil cleaner assembly belongs to engine fuel oil system technical field. This fuel filter base includes integrated into one piece's the main casing body, and the main casing body is provided with filter core portion of holding, the chamber that catchments, check valve subassembly cavity, electric pump assembly cavity, and wherein the pump casing that encloses into the electric pump assembly cavity includes partition portion and closing part, and the partition portion is arranged in the chamber that catchments for separate chamber and the electric pump assembly cavity that catchments, and the closing part is protruding to be located outside the chamber that catchments, and the closing part is formed by the main casing body outer wall. This fuel filter assembly includes above-mentioned fuel filter base. The utility model discloses a part of pump casing that will enclose into the electric pump assembly cavity is protruding to be located outside the water collecting cavity, and this part of pump casing becomes a part of the outer wall of the main casing, make the main casing only need to loose core from the upper portion when adopting the mould shaping and can accomplish; the core pulling of the upper part and the lower part of the main shell is avoided when the main shell is molded by a mold.

Description

Fuel filter base and fuel filter assembly

Technical Field

The utility model relates to an engine fuel oil system technical field especially relates to a fire oil cleaner base and fire oil cleaner assembly.

Background

With the increase of the emission requirements of the automobile engine in China, the demand of the fuel filter assembly is continuously increased and improved. The fuel filter assembly mainly functions to filter fuel and remove water in the fuel. The filtered fuel oil can greatly reduce the failure probability of the fuel spray nozzle, and the service life of the engine is prolonged.

At present, a high-pressure common rail system is generally applied to a diesel engine, although the high-pressure common rail system improves the injection pressure of fuel, air in a low-pressure oil way can not be automatically discharged generally when the engine is started at a low speed, so that the engine is difficult to start, and a fuel filter capable of automatically exhausting and pumping the fuel is provided with an electric pump.

Specifically, a power supply of the whole vehicle starts, an electric pump starts, and the electric pump is automatically closed after the power supply is switched on to work for a certain time, wherein the electric pump generates negative pressure at a pump oil inlet of the electric pump, then a main oil inlet of a base generates negative pressure, fuel oil in a fuel tank is sucked into the base at the moment, the fuel oil is filtered by a fuel oil filter, enters a cavity of an electric pump assembly arranged on the base through a clean oil channel, is pumped out from an oil outlet of the pump, and is then discharged through a main oil outlet of the base communicated with the pump oil filter, and at the moment, a check valve assembly is in. When the electric pump assembly is closed, the one-way valve assembly is opened, the filtered fuel in the base flows in from the one-way valve assembly and then is discharged through the base main oil outlet communicated with the one-way valve assembly, and finally the fuel reaches the engine.

As shown in figures 1 and 2, a fuel filter assembly with an electric pump in the prior art is mainly arranged in a manner that a cavity 02 of an electric pump assembly is arranged inside a fuel filter base, wherein the cavity 02 of the electric pump assembly is arranged inside a main shell 01 of the fuel filter base, so that the fuel filter base cannot be integrally formed through a mold forming process, and the upper part and the lower part can be completed only by pulling cores on two sides, so that two ends of the fuel filter base are both of an open structure, wherein one end of the fuel filter base is connected with a filter element, and the other end of the fuel filter base is sealed through a sealing ring and a flange cover plate 03, on one hand, the fuel filter base is complicated in self assembly, on the other hand, the sealing ring is aged and fails, and the fuel filter base is leaked, and the like, and the arrangement manner that the two, The lower part can be formed only by pulling cores on two sides, and the processing procedure is complex.

Therefore, it is desirable to provide a fuel filter base and a fuel filter to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire oil cleaner base, spare part is few, and the assembly is simple, and the reliability is high.

Another object of the utility model is to provide a fire oil filter assembly, the maintenance mileage is long to reduce and maintain the number of times.

To achieve the purpose, the utility model adopts the following technical proposal:

a fuel filter base comprising an integrally formed main housing provided with:

the filter element accommodating part is used for installing a filter element, and the filter element is at least partially accommodated in the filter element accommodating part;

the water collecting cavity is communicated with the filtering channel of the filter element and is used for collecting liquid separated from the fuel oil;

a valve oil inlet of the one-way valve assembly cavity can be communicated with the oil purification channel of the filter element, and a valve oil outlet of the one-way valve assembly cavity can be communicated with a main oil outlet arranged on the main shell;

a pump oil inlet of the electric pump assembly cavity can be communicated with the clean oil channel of the filter element, and a pump oil outlet of the electric pump assembly cavity can be communicated with the main oil outlet; the pump housing enclosing the electric pump assembly cavity comprises a separating part and a sealing part, the separating part is positioned in the water collecting cavity and used for separating the water collecting cavity from the electric pump assembly cavity, the sealing part is convexly arranged outside the water collecting cavity, and the sealing part is formed by the outer wall of the main housing.

Preferably, said check valve assembly chamber and said electric pump assembly chamber are disposed in parallel, said main oil outlet being located between said check valve assembly chamber and said electric pump assembly chamber.

Preferably, the check valve assembly chamber and the electric pump assembly chamber are both arranged along a first direction, the main casing body extends outwards along a second direction to form a main oil outlet pipe, the first direction is perpendicular to the second direction, and the main oil outlet pipe is communicated with the check valve assembly chamber and the electric pump assembly chamber.

Preferably, the main oil outlet pipe comprises a first main oil outlet arranged at one end extending along the forward direction of the second direction and a second main oil outlet arranged at one end extending along the reverse direction of the second direction.

Preferably, the main casing body extends outwards along the second direction and is provided with a main oil inlet pipe, and the main oil inlet pipe is communicated with the filter element accommodating part.

Preferably, the fuel filter base further comprises a partition member disposed in the main housing, and the filter element accommodating portion and the water collecting chamber are located on both sides of the partition member.

Preferably, the partition member includes a partition plate, the partition plate is provided with a central hole, a connecting portion is convexly provided on a side wall of the central hole, the connecting portion is fixedly connected with the main casing, and the periphery of the partition plate is hermetically connected with the main casing.

Preferably, the partition member further includes a partition ring, the partition ring is convexly disposed on one side of the partition plate facing the water collecting cavity, the inside of the partition ring is communicated with the central hole, and the connecting portion is disposed on the inner wall of the partition ring.

A fuel filter assembly comprises the fuel filter base, an upper shell and a filter element, wherein the upper shell is in threaded connection with a main shell of the fuel filter base, one part of the filter element is located in a filter element accommodating part of the main shell, and the other part of the filter element is located in the upper shell.

The utility model has the advantages that:

the partial pump shell which is enclosed into the cavity of the electric pump assembly is convexly arranged outside the water collecting cavity and becomes a part of the outer wall of the main shell, so that the main shell can be formed by only pulling cores from the upper part when a mould is adopted for forming, and the number of the pulled cores is small; the problem that the main shell in the prior art can be formed only by pulling cores at the upper part and the lower part when a mould is used for forming is solved, and the processing procedure is complex; simultaneously, the arrangement mode of the scheme saves the assembly of the end cover, and solves the problems that the fuel filter base is complex to assemble, the sealing ring is aged and invalid, and the fuel filter base leaks.

Drawings

FIG. 1 is a partial cross-sectional view of a portion of a prior art fuel filter assembly;

FIG. 2 is a bottom view of a prior art fuel filter assembly;

FIG. 3 is a partial cross-sectional view of a fuel filter assembly in accordance with an embodiment of the present invention;

FIG. 4 is a bottom view of a fuel filter assembly according to an embodiment of the present invention;

FIG. 5 is an enlarged schematic view at A in FIG. 3;

fig. 6 is a schematic structural diagram of a main housing at a first viewing angle according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a fuel filter assembly according to an embodiment of the present invention from a further perspective;

fig. 8 is a schematic structural diagram of the main housing at a second viewing angle in an embodiment of the present invention;

fig. 9 is a schematic structural view of a partition member in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a filter element end cover according to an embodiment of the present invention.

In fig. 1 and 2:

01. a main housing; 02. a pump assembly chamber; 03. a flange cover plate;

in FIGS. 3-10:

100. a main housing; 101. a water collection cavity; 102. a pump assembly chamber; 103. a check valve assembly chamber; 104. a pump housing; 1041. a partition portion; 1042. a closing part; 1043. an oil inlet of the pump; 105. a valve oil inlet; 106. a pump end cap; 107. plugging by screwing; 108. a main oil outlet; 1080. a main oil outlet pipe; 1081. a first main oil outlet; 1082. a second main oil outlet; 109. a main oil inlet; 1090. a main oil inlet pipe; 1091. a first main oil inlet; 1092. a second main oil inlet; 110. a central passage; 111. a threaded hole;

200. a filter element; 201. a filter element end cover; 2011. an end cover outer ring; 2012. an end cover inner ring; 2013. connecting ribs;

300. a partition member; 301. a partition plate; 302. a spacer ring; 303. a connecting portion;

400. an electric pump assembly; 500. a one-way valve assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 3, the present embodiment discloses a fuel filter assembly, which includes a fuel filter base, an upper housing (not shown) capable of being connected to the fuel filter base, and a filter element 200 located in the fuel filter base and the upper housing.

Specifically, as shown in fig. 3-6, the fuel filter base includes an integrally formed main housing 100, wherein the main housing 100 includes a filter element receiving portion therein, the main housing 100 and the upper housing together form a space for receiving the filter element 200, and then the filter element 200 is at least partially received in the filter element receiving portion. Optionally, the main housing 100 is screwed to the upper housing, but other connection methods such as snap connection may also be adopted. And, the main housing 100 further includes a water collecting chamber 101 therein, the water collecting chamber 101 communicating with the filtering passage of the filter cartridge 200 for collecting liquid separated from the fuel, wherein the filter cartridge accommodating part and the water collecting chamber 101 are partitioned at both sides by a partition member 300 in the main housing 100. In addition, the main housing 100 is provided with a check valve assembly chamber 103 and an electric pump assembly chamber 102. The valve oil inlet 105 of the check valve assembly chamber 103 can communicate with the clean oil passage of the filter cartridge 200, and the valve oil outlet of the check valve assembly chamber 103 can communicate with the main oil outlet 108 provided on the main housing 100. The pump oil inlet 1043 of the electric pump assembly chamber 102 can be in communication with the clean oil passage of the filter cartridge 200, and the pump oil outlet of the electric pump assembly chamber 102 can be in communication with the main oil outlet 108. In this embodiment, the pump housing 104 enclosing the electric pump assembly chamber 102 includes a partition portion 1041 and a closing portion 1042, the partition portion 1041 is located in the water collecting chamber 101 and is used for partitioning the water collecting chamber 101 from the electric pump assembly chamber 102, the closing portion 1042 is protruded out of the water collecting chamber 101, and the closing portion 1042 is formed by an outer wall of the main housing 100. The part of the pump shell 104 which encloses the electric pump assembly cavity 102 is arranged outside the water collecting cavity 101 in a protruding mode, and the part of the pump shell 104 becomes a part of the outer wall of the main shell 100, so that the main shell 100 can be formed by only drawing cores from the upper part when a mould is adopted for forming, and the core drawing quantity is small; the problem that the main shell 100 can be formed only by pulling cores at the upper part and the lower part when a mold is adopted for forming in the prior art and the machining process is complex is solved, and meanwhile, the arrangement mode of the embodiment omits the assembly of the end cover, namely the problems that the fuel filter base is complex in self-assembly, the sealing ring is aged and invalid, and the fuel filter base leaks and the like are solved; and the electric pump assembly chamber 102 is partially positioned inside the main shell 100, and partially positioned outside the main shell 100 and integrally formed with the main shell 100, so that the space occupied by the water collecting cavity 101 is reduced.

Alternatively, the check valve assembly chamber 103 and the electric pump assembly chamber 102 may be arranged in parallel, the main oil outlet 108 may be arranged at the valve oil outlet of the check valve assembly chamber 103, and the fuel oil may be discharged from the main oil outlet 108 by arranging a communication line between the oil outlet of the electric pump assembly chamber 102 and the valve oil outlet of the check valve assembly chamber 103, so that both the fuel oil in the electric pump assembly chamber 102 and the fuel oil in the check valve assembly chamber 103 may be discharged. For the cast fuel filter base, a fabrication hole is needed to be arranged, the axis of the fabrication hole is preferably perpendicular to the axis of the check valve assembly cavity 103, a tool for machining the communication hole penetrates through the fabrication hole and then penetrates through the check valve assembly cavity 103 until the tool is communicated with the oil outlet of the electric pump assembly cavity 102, and after machining is completed, the fabrication hole is blocked by a plug screw. In this embodiment, as shown in fig. 7, the check valve assembly chamber 103 and the electric pump assembly chamber 102 are both disposed along a first direction, the main housing 100 extends outward along a second direction to form a main oil outlet pipe 1080, the first direction is perpendicular to the second direction, and the main oil outlet pipe 1080 is communicated with the check valve assembly chamber 103 and the electric pump assembly chamber 102, so that the main oil outlet 108 is located between the check valve assembly chamber 103 and the electric pump assembly chamber 102. Compared with the mode that the main oil outlet 108 is directly arranged at the valve oil outlet of the one-way valve assembly cavity 103, the processing of a communication pipeline and a process hole can be avoided, a plug screw used for blocking the process hole can be omitted, the processing technology is simple, the number of parts is reduced, and therefore the assembling steps are also reduced.

Referring again to FIG. 7, optionally, a main oil inlet tube 1090 of the fuel filter assembly is also provided on the main housing 100. Wherein, the oil inlet pipeline is arranged at one side of the separating component 300 and communicated with a dirty oil area in the fuel filter assembly; the oil outlet pipeline is arranged at the other side of the partition part 300 and communicated with a clean oil channel in the fuel filter assembly. Optionally, main casing 100 has main oil inlet pipe 1090 along the outside extension of second direction, and main oil inlet pipe 1090 link up with the filter core accommodation portion. In the present embodiment, the main oil outlet pipe 1080 includes a first main oil outlet 1081 provided at one end extending in the forward direction of the second direction and a second main oil outlet 1082 provided at one end extending in the reverse direction of the second direction. The main oil inlet pipe 1090 includes a first main oil inlet 1091 provided along one end of the second direction forward extension and a second main oil inlet 1092 along one end of the second direction reverse extension. The first main oil outlet 1081 and the second main oil outlet 1082 have the same function but different directions, so that the fuel filter assembly can be conveniently communicated with the first main oil outlet 1081 or the second main oil outlet 1082 according to the arrangement position of the fuel filter assembly, and the other unconnected main oil outlet 108 can be blocked by a plug. The first main oil inlet 1091 and the second main oil inlet 1092 at the two ends of the oil inlet pipeline are the same, and are not described herein again.

Further, as shown in fig. 8 to 9, a central passage 110 for communicating with the clean oil passage of the filter cartridge 200 is provided in the main housing 100, and a screw hole 111 is provided at an outer circumference of the central passage 110 for fixedly coupling with the partition member 300. In this embodiment, the partition member 300 includes a partition plate 301, the partition plate 301 has a central hole capable of communicating with the central passage 110, a connecting portion 303 is protruded from a sidewall of the central hole, the connecting portion 303 is fixedly connected to the main housing 100, and an outer periphery of the partition plate 301 is hermetically connected to the main housing 100. The aperture of the central hole is larger than the pipe diameter of the central passage 110, and the central hole is used for penetrating through the filter element end cover 201 of the filter element 200. The filter end cap 201 is provided with a filter channel which can communicate with the water collection chamber 101 and a clean oil channel which communicates with the central passage 110. Further, referring to fig. 9, the partition member 300 further includes a partition ring 302, the partition ring 302 is protruded from a side of the partition plate 301 facing the water collection chamber 101, an inside of the partition ring 302 is communicated with the central hole, and the connection portion 303 is disposed on an inner wall of the main housing 100. Correspondingly, referring to fig. 10, an end cap ring is convexly disposed on one side, away from the filter element, of filter element end cap 201 of filter element 200, and includes an end cap inner ring 2012 and an end cap outer ring 2011, and end cap inner ring 2012 is disposed inside end cap outer ring 2011, and end cap inner ring 2012 is communicated with the clean oil passage, and end cap outer ring 2011 is communicated with the filter passage, where end cap outer ring 2011 and end cap inner ring 2012 may be further connected by connecting rib 2013. Endcap ring is at least partially positioned within main housing 100, endcap outer ring 2011 sealingly engages partition member 300, and endcap inner ring 2012 sealingly engages central passage 110. It is preferable that the connection portion 303 of the partition member 300 is located at an end of the partition ring 302 away from the partition plate 301, so that the end cover ring can be inserted into the main housing 100 as much as possible, and the reliability of connection between the filter cartridge 200 and the partition member 300 can be ensured.

Of course, the fuel filter base also includes a check valve assembly 500 and an electric pump assembly 400, wherein the check valve assembly 500 is located in the check valve assembly chamber 103 and the inlet end of the check valve assembly chamber 103 is sealed by the plug 107; the electric pump assembly 400 is located in the electric pump assembly chamber 102 and the inlet end of the electric pump assembly chamber 102 is sealed by the pump end cap 106.

After the fuel filter assembly in the embodiment uses the fuel filter base, the maintenance course is long, so that the maintenance times are reduced, and the effective working time of the fuel filter assembly is long.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A fuel filter base, comprising an integrally formed main housing (100), the main housing (100) being provided with:

a cartridge receptacle for receiving a cartridge (200) and in which the cartridge (200) is at least partially received;

the water collecting cavity (101) is communicated with the filtering channel of the filter element (200) and is used for collecting liquid separated from the fuel oil;

a one-way valve assembly chamber (103), wherein a valve oil inlet (105) of the one-way valve assembly chamber (103) can be communicated with a clean oil channel of the filter element (200), and a valve oil outlet of the one-way valve assembly chamber (103) can be communicated with a main oil outlet (108) arranged on the main shell (100);

a motor-pump assembly chamber (102), a pump oil inlet (1043) of the motor-pump assembly chamber (102) being communicable with the clean oil passage of the filter cartridge (200), a pump oil outlet of the motor-pump assembly chamber (102) being communicable with the main oil outlet (108); wherein the pump housing (104) enclosing the electric pump assembly chamber (102) comprises a partition part (1041) and a closing part (1042), the partition part (1041) is located in the water collection cavity (101) and is used for separating the water collection cavity (101) from the electric pump assembly chamber (102), the closing part (1042) is convexly arranged outside the water collection cavity (101), and the closing part (1042) is formed by the outer wall of the main casing (100).

2. The fuel filter base of claim 1 wherein the check valve assembly chamber (103) and the motor-pump assembly chamber (102) are disposed in parallel, the main oil outlet (108) being located between the check valve assembly chamber (103) and the motor-pump assembly chamber (102).

3. The fuel filter base of claim 2 wherein the check valve assembly chamber (103) and the electric pump assembly chamber (102) are both disposed in a first direction, the main housing (100) extends outwardly in a second direction with a main oil pipe (1080) disposed therein, the first and second directions being perpendicular, the main oil pipe (1080) communicating with the check valve assembly chamber (103) and the electric pump assembly chamber (102).

4. The fuel filter base of claim 3 wherein the rail (1080) includes a first rail outlet (1081) at one end extending forwardly in the second direction and a second rail outlet (1082) at one end extending rearwardly in the second direction.

5. The fuel filter base of claim 3 wherein the main housing (100) has a main oil inlet pipe (1090) extending outwardly in the second direction, the main oil inlet pipe (1090) communicating with the cartridge receptacle.

6. The fuel filter base of claim 1 further comprising a partition member (300) disposed within the main housing (100), the cartridge receptacle and the water collection cavity (101) being located on either side of the partition member (300).

7. The fuel filter base of claim 6, wherein the partition member (300) comprises a partition plate (301), the partition plate (301) is provided with a central hole, a connecting part (303) is convexly arranged on the side wall of the central hole, the connecting part (303) is fixedly connected with the main shell (100), and the periphery of the partition plate (301) is hermetically connected with the main shell (100).

8. The fuel filter base according to claim 7, wherein the partition member (300) further comprises a partition ring (302), the partition ring (302) is protruded from a side of the partition plate (301) facing the water collection chamber (101), an interior of the partition ring (302) is communicated with the central hole, and the connecting portion (303) is disposed on an inner wall of the main casing (100).

9. A fuel filter assembly comprising a fuel filter base according to any of claims 1 to 8, further comprising an upper housing and a filter cartridge (200), the upper housing being threadably connected to the main housing (100) of the fuel filter base, wherein the filter cartridge (200) is located in part in a cartridge receiving portion of the main housing (100) and in part in the upper housing.