CN217926115U - Oil transfer pump assembly and vehicle - Google Patents

Abstract

The utility model provides an oil transfer pump assembly and vehicle. The fuel delivery pump assembly of the utility model is arranged in the fuel tank to pump out the fuel in the fuel tank; the oil transfer pump assembly comprises an oil transfer pump, a second filter arranged at an oil inlet of the oil transfer pump, and a first filter sleeved on the periphery of the second filter; be equipped with first oil feed passageway and second oil feed passageway on the first filter, be provided with the filter media that filter fineness is higher than the second filter on the first oil feed passageway, the second oil feed passageway is located the top of first filter, and compares and keeps away from the second filter in the filter media. The utility model discloses an oil transfer pump assembly sets up the two-stage for the oil transfer pump and filters, has not only ensured the normal operating of oil transfer pump under various temperature environment, has also reduced impurity and has got into the inside risk of oil transfer pump, is favorable to improving the oil transfer pump because of the inside gear jamming's that leads to of getting into mechanical impurity problem.

Description

Oil transfer pump assembly and vehicle

Technical Field

The utility model relates to a fuel pump technical field, in particular to fuel delivery pump assembly. Additionally, the utility model discloses still relate to a vehicle.

Background

At present, most diesel vehicle type fuel systems adopt a negative pressure fuel supply mode, namely, an engine is used as power to draw fuel from a fuel tank; with the improvement of the requirements of people on the tail gas emission of diesel vehicles and the improvement of the quality of market oil products and the technical progress, the existing diesel vehicle fuel system gradually adopts a positive pressure fuel supply mode, namely, an electric fuel delivery pump is arranged in a fuel tank to supply fuel for an engine at a certain pressure.

The diesel oil electric oil transfer pump adopting the positive pressure oil supply mode generally adopts a rotor pump (an internal gear pump) to transfer diesel oil. This type of oil transfer pump has the following problems:

the gear clearance in the pump core is generally 20-90 μm; the filtering precision of the primary filter of the oil transfer pump is 100-300 mu m. The filter mesh apertures larger than the gear clearance cause large diameter mechanical impurities to enter the pump core, causing the gears to jam.

After the filter screen is encrypted to improve the filtering precision, the resistance of the filter screen to the flowing of the fuel is increased due to the increase of the viscosity of the diesel oil in a low-temperature environment, so that the flow of the fuel delivery pump is reduced.

The diesel vehicle is generally applied to severe environments such as transportation, engineering, agriculture, animal husbandry, mining areas and the like, the refueling environment is severe, and mechanical impurities (such as sand dust, metal particles generated by abrasion of a refueling gun and a refueling pipe orifice, unclean impurities contained in oil products and the like) are inevitably mixed.

Therefore, the irreconcilable contradiction among the gear clearance, the primary filter precision and the diesel oil quality causes the problems that a large amount of diesel oil electric delivery pumps are blocked and not locked and abnormal operation occurs in the market.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an oil delivery pump assembly to improve the problem of gear jamming caused by the internal mechanical impurities entering the oil delivery pump of internal gear type for diesel oil.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a fuel delivery pump assembly arranged in a fuel tank for pumping out fuel in the fuel tank; the oil delivery pump assembly comprises an oil delivery pump, a second filter and a first filter, wherein the second filter is arranged at an oil inlet of the oil delivery pump, and the first filter is sleeved on the periphery of the second filter; a first oil inlet channel and a second oil inlet channel are arranged on the first filter, and filter materials with higher filtering precision than that of the second filter are arranged on the first oil inlet channel; the second oil inlet channel is located at the top of the first filter and is far away from the second filter compared with the filter material.

Furthermore, the filtering precision of the filter material is less than 20 μm.

Further, the first filter comprises a frame enclosing the second filter inside itself; the first oil inlet channel is arranged on the side and/or the bottom of the frame, and the second oil inlet channel is an opening formed in the top of the frame.

Furthermore, the filter material is a first filter screen arranged on the frame.

Furthermore, the oil transfer pump is arranged in the frame through the opening, the oil inlet is positioned at the bottom of the oil transfer pump, and the oil outlet of the oil transfer pump is positioned at the top of the oil transfer pump.

Further, still include the oil storage bucket, the fuel delivery pump the first filter and the second filter all locates in the oil storage bucket.

Further, the second filter comprises a framework and a second filter screen arranged on the framework; the oil inlet is positioned in the second filter, and the fuel oil in the first filter enters the oil inlet through the second filter screen.

Furthermore, the top of skeleton is equipped with the joint structure, the second filter passes through the joint structure install in on the fuel delivery pump.

Further, the top and the bottom of skeleton all are equipped with the second filter screen.

Compared with the prior art, the utility model discloses following advantage has:

the utility model discloses an oil transfer pump assembly, set up the two-stage filtration for the oil transfer pump that is used for diesel oil, under the normal atmospheric temperature environment, the fuel is through the second filter again behind the filter media of the high filtration precision of first filter, later get into inside the oil transfer pump, under the low temperature environment, even because temperature reduction leads to diesel oil viscosity to increase, the fuel can't be smoothly through the filter media of the high filtration precision on the first oil feed passageway, also can be through the second oil feed passageway of first filter, it is inside to get into the oil transfer pump after the second filter again, thereby not only ensured the normal operating of oil transfer pump under various temperature environment, impurity entering the inside risk of oil transfer pump has also been reduced, be favorable to improving the problem of gear jamming that inner gearing gear formula oil transfer pump leads to because of inside entering mechanical impurity.

In addition, the first filter adopts a frame structure form, so that the oil inlet of the oil transfer pump is conveniently and wholly surrounded, the oil inlet is protected by primary filtering, and the filter material on the first oil inlet channel is conveniently and flexibly arranged. And the filter media on the first oil inlet channel adopt a filter screen form, so that the filter screens with the filtering precision meeting the requirement can be conveniently configured, and the filter screens can be conveniently arranged and installed on the frame.

Another objective of the present invention is to provide a vehicle, which uses diesel oil as fuel oil and has an oil tank; the oil tank is internally provided with the oil transfer pump assembly. Compared with the prior art, the utility model discloses a vehicle has the technological advantage that foretell fuel delivery pump assembly possessed.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to further understand the present disclosure, and the exemplary embodiments and descriptions thereof are used to explain the present disclosure, wherein the related front and back, upper and lower, and other words are only used to represent relative positional relationships, which do not constitute an improper limitation of the present disclosure. In the drawings:

fig. 1 is a schematic view of an overall structure of an oil transfer pump assembly according to a first embodiment of the present invention;

fig. 2 is a schematic view of an assembly structure of the oil transfer pump, the first filter and the second filter according to the first embodiment of the present invention;

fig. 3 is a schematic view of an assembly structure of the oil transfer pump and the second filter according to the first embodiment of the present invention;

fig. 4 is a top view of an oil transfer pump assembly according to a first embodiment of the present invention;

FIG. 5 isbase:Sub>A schematic cross-sectional view taken along line A-A in FIG. 4;

description of the reference numerals:

1. an oil storage barrel;

2. a first filter; 20. a frame; 210. a first filter screen; 22. a second oil inlet passage;

3. a second filter; 30. a clamping structure; 300. a second filter screen;

4. an oil transfer pump; 401. an oil outlet; 402 a wire harness port.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it should be noted that if terms indicating directions or positional relationships such as "up", "down", "inside", "back", etc. appear, they are based on the directions or positional relationships shown in the drawings, 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 indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention; the appearances of the terms first, second, etc. in the figures are also for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless expressly limited otherwise. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The embodiment relates to a fuel delivery pump assembly, which is arranged in a fuel tank to pump out fuel in the fuel tank, and can solve the problem of gear clamping stagnation caused by mechanical impurities entering the interior of an internal gear type fuel delivery pump 4; one exemplary configuration of which is shown in fig. 1 and 2.

In general, the oil pump assembly includes an oil pump 4, a second filter 3 disposed at an oil inlet of the oil pump 4, and a first filter 2 disposed around the second filter 3. Wherein, be equipped with first oil feed passageway and second oil feed passageway 22 on the first filter 2, be provided with the filter media that the filter fineness is higher than second filter 3 on the first oil feed passageway, second oil feed passageway 22 is located the top of first filter 2, and compares and keeps away from second filter 3 setting in the filter media to make the fuel arrive second filter 3 after preferentially passing through the filter media.

Specifically, the first filter 2 may have various designs, and in order to facilitate the second filter 3 at the oil inlet of the oil transfer pump 4 to be enclosed well, in the present embodiment, the first filter 2 includes a frame 20 enclosing the second filter 3 inside itself; the first oil inlet channel is arranged at the side and/or bottom of the frame 20, and the top of the frame 20 is arranged with an opening, which forms the second oil inlet channel 22. The first filter 2 is in a frame structure form, so that the part where the oil inlet of the oil transfer pump 4 is located and the second filter 3 at the position are conveniently and wholly surrounded, a first filtering protection is formed on the oil inlet, and flexible arrangement of filter materials on the first oil inlet channel is convenient.

The filter material on the first filter 2 may be filter cotton or a screen, and preferably, the filter material is a first screen 210, which may be a metal screen, provided on the frame 20. The filter media on the first oil inlet channel adopt the filter screen form, the filter screen of mesh number that the configuration filter fineness satisfies the requirement of being convenient for, and the filter screen is also convenient for set up the installation on frame 20. In this embodiment, the first screen 210 is disposed on both the side and the bottom of the frame 20.

There are many options for the arrangement and position of the feed pump 4 in the first filter 2, and it is sufficient to arrange the second filter 3 inside the first filter 2. As shown in fig. 1, in the present embodiment, the oil transfer pump 4 is disposed in the frame 20 through an opening, the oil inlet is located at the bottom of the oil transfer pump 4, and the oil outlet 401 of the oil transfer pump 4 and the wiring harness 402 of the connection circuit are located at the top of the oil transfer pump 4.

Thus, the lower portion of the oil feed pump 4 is located in the frame 20, and the second filter 3 located at the oil inlet is also located entirely at the bottom position in the frame 20. The lower portion of the oil feed pump 4 is disposed in the frame 20, and the upper portion of the oil feed pump 4 is exposed outside the first filter 2, which facilitates the reduction of the overall size of the first filter 2, thereby reducing the material cost for manufacturing the first filter 2.

The filter material on the second filter 3 may also be filter cotton or a filter net, and the second filter 3 of this embodiment includes a framework and a second filter net 300 disposed on the framework. The oil inlet is positioned inside the second filter 3, and the fuel oil in the first filter 2 enters the oil inlet through the second filter screen 300.

Specifically, after the framework is provided with the second filter screen 300, the second filter 3 is integrally in a box-shaped structure, and the oil inlet is located inside the box. The top, the bottom and the side of the framework can be covered with a second filter screen 300; in this embodiment, the second filter 3 is a flat box, the side portions of the box are all skeletons, and the top and the bottom of the skeleton are both provided with the second filter screen 300.

The second filter 3, which has the shape and structure as described above, not only has a sufficient flow area, but also has a low overall height, and is preferably disposed at the bottom of the basket-shaped frame 20 of the first filter 2, at a relatively large distance from the opening at the top of the first filter 2. Thus, the fuel can enter the first filter 2 through the first screen 210 of the frame 20 nearby, and even if part of the fuel enters the first filter 2 through the second fuel inlet passage 22 at the opening part directly, the fuel entering the inside of the first filter 2 from the second fuel inlet passage 22 contains substantially no mechanical impurities because the mechanical impurities are deposited below the first filter 2.

In addition, for the convenience of installation, a clamping structure 30 is arranged at the top of the framework, and the second filter 3 is installed on the oil transfer pump 4 through the clamping structure 30.

In this embodiment, the second filter 3 is also in the form of a screen, which has the advantage of easy preparation, and the filtering accuracy of the second filter 3 can be well controlled. In addition, the oil delivery pump assembly of this embodiment further includes an oil storage barrel 1, and the oil delivery pump 4, the first filter 2 and the second filter 3 are all disposed in the oil storage barrel 1. The fuel in the fuel tank enters the fuel storage barrel 1 and is pumped out by the fuel delivery pump 4 for use by vehicles. The oil storage barrel 1 can avoid the condition that the fuel pump 4 is exposed to the fuel and idles due to fuel sloshing in the fuel tank when the vehicle is inclined in posture or accelerated and decelerated.

It should be noted that the filtering precision of the filtering material on the first oil inlet channel is higher than that of the filtering material on the second filter 3, and the specific filtering precision can be reasonably selected, and preferably, the filtering precision of the first filter screen 210 on the first oil inlet channel should be smaller than 20 μm. The filtering precision of the filtering material arranged on the first oil inlet channel is set to be less than 20 microns, most of mechanical impurities and metal particles can be filtered, and the impurities with large particle sizes are prevented from entering the oil conveying pump 4 to cause gear clamping stagnation, so that the oil conveying pump 4 is damaged. It should be noted again that the filtration accuracy is in fact the pore size of the filter element of the filter, i.e. the size of the largest particles that the solution containing impurities will pass through when passing through the filter screen. Therefore, the higher the filtration accuracy, the smaller the pore size value; the larger the size value, the lower the filtration accuracy.

To sum up, and as shown in fig. 4, the fuel delivery pump assembly of this embodiment sets up two-stage filtration for the fuel delivery pump 4, under the normal temperature environment, the fuel passes through the second filter 3 after passing through the filter media with high filtration precision of the side portion and the bottom of the first filter 2, and then enters into the interior of the fuel delivery pump 4, and under the low temperature environment, even if the viscosity of the diesel oil increases due to temperature reduction, the fuel cannot pass through the filter media with high filtration precision on the first oil inlet channel smoothly, the fuel can also pass through the second oil inlet channel 22 at the top of the first filter 2, and then enters into the interior of the fuel delivery pump 4 after passing through the second filter 3, thereby not only ensuring the normal operation of the fuel delivery pump 4 under various temperature environments, but also reducing the risk that impurities enter into the interior of the fuel delivery pump 4 of internal gearing, and being favorable for improving the problem of gear jamming caused by the mechanical impurities entering into the interior of the fuel delivery pump 4 of internal gearing.

Example two

The present embodiment relates to a vehicle that is fueled with diesel fuel and has a fuel tank that stores fuel; furthermore, the fuel delivery pump assembly provided by the first embodiment is arranged in the fuel tank.

In the vehicle of the embodiment, in a normal temperature environment, the viscosity of diesel oil is in a normal state, and after fuel oil in the oil tank enters the oil storage barrel 1, the fuel oil passes through the filter material on the first filter 2, then passes through the second filter 3, and then enters the oil transfer pump 4, so that the fuel oil is normally supplied to the vehicle. Simultaneously, the high filtering precision of first filter 2 can filter the impurity that can the jamming gear is whole, makes pump core gear obtain the protection, avoids appearing the gear jamming phenomenon.

Under low temperature environment, because the increase of temperature reduction diesel oil viscosity, the resistance grow of the filter media on the first filter 2, inside most diesel oil can get into the first filter 2 through the second oil feed passageway 22 at the top of the first filter 2, rethread second filter 3 gets into fuel delivery pump 4 to normally supply the fuel for the vehicle. Because second oil feed passageway 22 sets up at first filter 2 tops, the mechanical impurity that sneaks into in the fuel mostly deposits in oil storage bucket 1 bottom, and the part is then filtered by first filter 2 and second filter 3, when guaranteeing to be for the normal fuel feeding of vehicle, has protected the pump core gear of fuel feed pump 4 not by the jamming of large granule mechanical impurity.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A fuel delivery pump assembly arranged in a fuel tank for pumping out fuel in the fuel tank; the method is characterized in that:

the oil transfer pump assembly comprises an oil transfer pump (4), a second filter (3) arranged at an oil inlet of the oil transfer pump (4), and a first filter (2) sleeved on the periphery of the second filter (3);

a first oil inlet channel and a second oil inlet channel (22) are arranged on the first filter (2), and filter materials with higher filtering precision than that of the second filter (3) are arranged on the first oil inlet channel;

the second oil inlet channel (22) is located at the top of the first filter (2) and is far away from the second filter (3) compared with the filter material.

2. The fuel pump assembly as set forth in claim 1, wherein:

the filtering precision of the filter material is less than 20 mu m.

3. The fuel pump assembly of claim 1, wherein:

the first filter (2) comprises a frame (20) enclosing the second filter (3) inside itself;

the first oil inlet channel is arranged on the side and/or the bottom of the frame (20), and the second oil inlet channel (22) is an opening formed in the top of the frame (20).

4. The fuel pump assembly of claim 3, wherein:

the filter medium is a first filter screen (210) arranged on the frame (20).

5. The fuel pump assembly as set forth in claim 3, wherein:

the oil transfer pump (4) is arranged in the frame (20) through the opening, the oil inlet is positioned at the bottom of the oil transfer pump (4), and the oil outlet (401) of the oil transfer pump (4) is positioned at the top of the oil transfer pump (4).

6. The fuel pump assembly as set forth in claim 1, wherein:

still include oil storage bucket (1), oil transfer pump (4) first filter (2) and second filter (3) all locate in oil storage bucket (1).

7. The fuel pump assembly as set forth in any one of claims 1 to 6, wherein:

the second filter (3) comprises a framework and a second filter screen (300) arranged on the framework; the oil inlet is positioned inside the second filter (3), and the fuel oil in the first filter (2) enters the oil inlet through the second filter screen (300).

8. The fuel pump assembly as set forth in claim 7, wherein:

the top of skeleton is equipped with joint structure (30), second filter (3) pass through joint structure (30) install in on fuel delivery pump (4).

9. The fuel pump assembly as set forth in claim 8, wherein:

the top and the bottom of skeleton all are equipped with second filter screen (300).

10. A vehicle using diesel oil as fuel oil is provided with a fuel tank; the method is characterized in that:

an oil transfer pump assembly as claimed in any one of claims 1 to 9 disposed in the oil tank.

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