CN216741795U - Fuel pump assembly of low oil inlet check valve venturi tube - Google Patents
Fuel pump assembly of low oil inlet check valve venturi tube Download PDFInfo
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- CN216741795U CN216741795U CN202123282917.XU CN202123282917U CN216741795U CN 216741795 U CN216741795 U CN 216741795U CN 202123282917 U CN202123282917 U CN 202123282917U CN 216741795 U CN216741795 U CN 216741795U
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Abstract
The utility model provides a fuel pump assembly of low oil feed check valve venturi, fuel pump assembly includes oil storage bucket, venturi and check valve, the check valve sets up the bottom surface of oil storage bucket, the venturi sets up in the oil storage bucket, the venturi includes venturi body, choke and venturi lower cover, venturi lower cover includes the cap and connects the lid limit portion of the radial outer edge of cap, the upper surface of cap connects the venturi body, the cap is in the both sides of venturi body are large tracts of land portion and small area portion respectively, the area of large area portion is greater than the area of small area portion; the large-area part of the cover part covers and is connected with the one-way valve; the horizontal line at the lower part of the inner edge of the throat pipe is lower than the horizontal line of the oil inlet of the one-way valve. This application oil feed is highly low, and the fuel quantity that the automobile start needs is still less, and fuel utilization is rateed highly, promotes the car continuation of the journey mileage, and the benefit is obvious.
Description
Technical Field
The utility model relates to a fuel is supplied with the field, specifically relates to a high efficiency, be used in the fuel pump assembly that has low oil feed check valve venturi tube of electronic fuel pump of car.
Background
The electric fuel pump assembly is arranged on the fuel tank and has the function of pipeline connection in the fuel supply system. The gasoline in the oil tank is conveyed into the fuel oil pipeline through the filter screen and the oil outlet pipe by the suction force generated when the built-in gasoline pump works, so that the consumption of an engine is provided. In the fuel supply system, fuel is firstly filtered by a primary filter screen to remove impurities in the fuel, then the fuel is pumped by a pump core, one part of the fuel is supplied to the requirement of an engine through a main pipeline, and the other part of the fuel returns the shunted fuel to a fuel tank through a pressure valve.
The venturi tube is arranged at the bottom of the oil storage barrel, an oil inlet of the one-way valve is used as an oil suction port, the venturi tube performs small-hole throttling acceleration treatment on a part of flow of the fuel pump, negative pressure is generated by utilizing cavitation effect, fuel oil in the oil tank is continuously sucked into the oil storage barrel from the oil inlet of the one-way valve, when the fuel oil in the oil storage barrel is continuously consumed by an automobile engine, the oil storage barrel is kept in a full state, fuel oil supply required by operation of the fuel pump is guaranteed, when an automobile stops, the one-way valve is closed under the pressure of the fuel oil in the oil storage barrel, and the oil storage barrel is guaranteed to store oil for a certain time.
Under the condition of the integral design of a venturi and a one-way valve of a fuel pump assembly in the prior art, the venturi covers the one-way valve, and a throat of the venturi is arranged above the one-way valve, so that the height from the throat of the venturi to the bottom of an oil storage barrel must include the height of the one-way valve, and the oil inlet height of the oil storage barrel needs to include the height of the one-way valve; in order to reduce the oil inlet height of the oil storage barrel, a check valve with low oil inlet height is independently arranged on the fuel pump assembly in the prior art, the product structure is complex, the oil storage performance is low, and the cost is high.
Thus, the check valve venturi of the prior art fuel pump assembly also has a raised place.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing an efficient electronic fuel pump of car's fuel pump assembly that has low oil feed check valve venturi tube can promote the car continuation of the journey mileage, and fuel utilization ratio is higher to solve prior art's problem.
According to an aspect of the utility model, a fuel pump assembly of low oil feed check valve venturi is provided for the fuel supply of car, the fuel pump assembly includes oil storage bucket, venturi and check valve, the check valve sets up the bottom surface of oil storage bucket, the venturi sets up in the oil storage bucket, the venturi includes venturi body, choke and venturi lower cover, wherein, the venturi lower cover is a lid, the venturi lower cover includes lid and connects the lid limit portion on the radial outer edge of lid, the upper surface of lid connects the venturi body, the lid is respectively for large tracts of land portion and small area portion in the both sides of venturi body, the area of large tracts of land portion is greater than the area of small area portion; the large-area part of the cover part covers and is connected with the one-way valve; the horizontal line at the lower part of the inner edge of the throat pipe is lower than the horizontal line of the oil inlet of the one-way valve.
Preferably, in the fuel pump assembly of the low oil inlet check valve venturi tube, the edge of the cover is inserted into and connected with the limiting groove of the oil storage barrel to form an oil inlet space, one end of the throat is connected with the oil inlet space, and the other end of the throat is connected with the inside of the oil storage barrel.
Preferably, the fuel pump assembly of the low oil inlet check valve venturi tube comprises a driving oil inlet pipe, a far end oil inlet pipe and a flowing oil inlet pipe, wherein the driving oil inlet pipe is connected with the flowing oil inlet pipe through a pipeline; the far-end oil inlet pipe is connected with the flowing oil inlet pipe; the tip that the oil pipe was advanced in the drive is detachable joint, oil pipe detachable connection filter is advanced in the drive.
Preferably, the fuel pump assembly of the venturi tube with the low oil inlet check valve further comprises a baffle plate, and the baffle plate is arranged at the opening end of the driving flow channel where the steel ball is located.
Preferably, the fuel pump assembly of the venturi tube with the low oil inlet check valve further comprises a cylindrical filter screen, and the filter screen is arranged in the driving oil inlet tube.
The purpose of this application is: the one-way valve venturi tube with higher efficiency is designed, the throat of the one-way valve and the venturi tube are offset, the horizontal line at the lower position of the inner edge of the throat of the venturi tube is lower than the horizontal line of an oil inlet of the one-way valve, the requirement of fuel quantity in an oil tank during initial starting or low residual oil quantity running is lowered, namely the fuel quantity required by the offline of the automobile during initial starting is lowered, and when the oil quantity of the oil tank is extremely small (such as the alarm of an oil meter of the automobile), the fuel is absorbed and utilized as much as possible, the cruising range of the automobile is improved, and the oil supply stability of a fuel pump is improved; in addition, the venturi tube is connected with the oil pipe through a detachable joint, so that a filter of the fuel pump assembly is detachable, fine filtration can be replaced after a certain distance without replacing the whole fuel pump assembly, and the market maintenance cost is reduced.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model has the advantages that the oil inlet height is low, the fuel quantity required by the starting of the automobile is less, the fuel utilization rate is higher, the endurance mileage of the automobile is improved, and the benefit is obvious;
2. the utility model adopts the detachable joint connection, so that the filter of the fuel pump assembly has detachability, and after a certain mileage, only fine filtration can be replaced without replacing the whole fuel pump assembly, thereby reducing the market maintenance cost;
3. the utility model adopts the cylindrical large-area filter screen, the aperture of the mesh is small, the blockage of excessive impurities is prevented, the jet aperture of the venturi tube can be designed to be smaller, and the injection efficiency is higher;
4. the utility model discloses a steel ball sealing mouth directly adopts the baffle anticreep on the oil storage bucket, has saved traditional hot riveting structure, and manufacturing cost is lower.
Of course, it is not necessary to implement any particular embodiment of the present invention to achieve all of the above technical effects at the same time.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the outer appearance of a swirl pot and a venturi tube according to the present application;
FIG. 2 is a partially cut-away schematic view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a schematic cut-away view of a venturi according to the present application;
FIG. 5 is a schematic view of the venturi and filter connection of the present application.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Referring to fig. 1, which is an external view of a fuel storage barrel and a venturi tube of the present application, a well-known fuel pump assembly includes a flange, a bracket, a pump core, the fuel storage barrel, a fuel level sensor, an injection valve, the venturi tube, a filter, and other components, and is used for supplying fuel to an automobile, but since the present application is technically characterized by a low-fuel-feed check valve venturi tube, other components are not described.
In the fuel pump assembly of low oil feed check valve venturi tube of this application, as shown in fig. 1 and fig. 2, the fuel pump assembly includes storage bucket 10, venturi tube 20 and check valve 30, check valve 30 sets up the bottom surface of storage bucket 10, specific connected mode does a through-hole is seted up to the bottom surface of storage bucket 10, then will check valve 30 assembles in the through-hole, because is one-way flow the fuel can only be followed the outside entering of storage bucket 10 the inside of storage bucket 10.
In fig. 1, the venturi tube 20 is disposed in the storage barrel 10, the venturi tube 20 includes a venturi tube body 22, a throat 23 and a venturi tube lower cover 24, wherein, referring to fig. 3, the venturi tube lower cover 24 is a cover body, the venturi tube lower cover 24 includes a cover portion 241 and a cover edge portion 242 connecting the radial outer edges of the cover portion, the upper surface of the cover portion 241 is connected to the venturi tube body 22, the cover portion 241 is respectively a large area portion and a small area portion at two sides of the venturi tube body 22, and the area of the large area portion is larger than that of the small area portion; the large area part of the cover part 241 covers and connects the check valve 30, and as shown in fig. 3, the area of the large area part on one side of the check valve 30 is far larger than that of the small area part enough to make the check valve 30 and the throat 23 arranged in a staggered manner; in addition, the horizontal line at the lower part of the inner edge of the throat 23 is lower than the horizontal line of the oil inlet of the one-way valve 30, that is, the horizontal plane of the effective outflow fuel of the throat 23 is lower than the horizontal plane of the oil inlet of the one-way valve 30, after the fuel enters from the oil inlet of the one-way valve 30, the fuel can flow into the oil storage barrel 10 from the pipeline of the throat 23 at a lower position, the fuel utilization rate is higher under the condition of less fuel, for example, the cruising mileage of an automobile can be improved under the condition that only a small amount of fuel is in the oil tank during the lifting of a new automobile.
In fig. 3, the cover edge 242 is inserted into the limiting groove 11 connected to the oil storage barrel 10 to form an oil inlet space, the limiting groove 11 is an annular groove, and the shape of the limiting groove 11 corresponds to the shape of the cover edge 242, so that the oil storage barrel has limiting, positioning and sealing effects; the oil inlet space is a space between the venturi tube lower cover 24 and the bottom surface of the oil storage barrel 10, on one hand, fuel oil can enter the oil inlet space under the action of the venturi tube 20, on the other hand, the fuel oil enters the oil inlet space from the one-way valve 30, one end of the throat 23 is connected with the oil inlet space, the other end of the throat 23 is connected with the inside of the oil storage barrel 10, and the throat 23 guides the fuel oil in the oil inlet space into the inside of the oil storage barrel 10, so that the lower the height of the throat 23 is, the more the fuel oil can be guided into the oil storage barrel 10 under the condition of only a small amount of fuel oil, and the longer the endurance mileage of an automobile is.
Referring to fig. 3, 4 and 5, the venturi body 22 includes a driving oil inlet pipe 221, a distal oil inlet pipe 222 and a flowing oil inlet pipe 223, the driving oil inlet pipe 221 is connected to the flowing oil inlet pipe 223 through a pipeline, the distal oil inlet pipe 222 is connected to the flowing oil inlet pipe 223 through a pipeline, and these structures and connections are not described in detail herein in the prior art; in the figure, the end of the driving oil inlet pipe 221 is provided with a detachable joint 2211, and the driving oil inlet pipe 221 is detachably connected with the filter 50; the detachable joint connection is adopted, so that the filter 50 of the fuel pump assembly is detachable, the fine filter can be replaced after a certain mileage without replacing the whole fuel pump assembly, and the market maintenance cost is reduced.
Referring to fig. 3 and 4, the oil storage barrel 10 further includes a baffle 12, the baffle 12 is a sheet body protruding from the bottom surface of the oil storage barrel 10 in the axial direction, the baffle 12 is disposed at the opening end of the driving flow channel where the steel ball 60 is located, and the steel ball 60 is disposed in the driving flow channel, which is the prior art and will not be described again; the steel ball 60 sealing opening directly adopts the baffle 12 on the oil storage barrel 10 to prevent falling off, saves the traditional hot riveting structure and has lower manufacturing cost.
In addition, as shown in fig. 3, the fuel pump assembly of the present application further includes a cylindrical filter screen 40, the filter screen 40 is disposed in the driving oil inlet pipe 221, the large-area filter screen 40 of the cylindrical filter screen is adopted in the present application, the mesh aperture is small and prevents the blockage of excessive impurities, the jet aperture of the venturi tube 20 can be designed to be smaller, and the injection efficiency is higher.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model has the advantages that the oil inlet height is low, the fuel quantity required by the starting of the automobile is less, the fuel utilization rate is higher, the endurance mileage of the automobile is improved, and the benefit is obvious;
2. the utility model adopts the detachable joint connection, so that the filter of the fuel pump assembly has detachability, and after a certain mileage, only fine filtration can be replaced without replacing the whole fuel pump assembly, thereby reducing the market maintenance cost;
3. the utility model adopts the cylindrical large-area filter screen, the aperture of the mesh is small, the blockage of excessive impurities is prevented, the jet aperture of the venturi tube can be designed to be smaller, and the injection efficiency is higher;
4. the utility model discloses a steel ball sealing mouth directly adopts the baffle anticreep on the oil storage bucket, has saved traditional rivet hot structure, and manufacturing cost is lower.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (5)
1. A fuel pump assembly of a low-oil-inlet one-way valve venturi tube is used for supplying fuel for automobiles and is characterized in that the fuel pump assembly comprises an oil storage barrel, the venturi tube and the one-way valve, the one-way valve is arranged on the bottom surface of the oil storage barrel, the venturi tube is arranged in the oil storage barrel, the venturi tube comprises a venturi tube body, a throat and a venturi tube lower cover, wherein,
the venturi lower cover is a cover body and comprises a cover part and a cover edge part connected with the radial outer edge of the cover part, the upper surface of the cover part is connected with the venturi body, the cover part is respectively provided with a large area part and a small area part at two sides of the venturi body, and the area of the large area part is larger than that of the small area part; the large-area part of the cover part covers and is connected with the one-way valve; the horizontal line at the lower part of the inner edge of the throat pipe is lower than the horizontal line of the oil inlet of the one-way valve.
2. The fuel pump assembly of the low oil feed check valve venturi tube of claim 1, wherein the cover edge portion is inserted into a limiting groove connected to the oil storage barrel to form an oil feed space, one end of the throat is connected to the oil feed space, and the other end of the throat is connected to the inside of the oil storage barrel.
3. The fuel pump assembly of the low-oil-feed check valve venturi tube of claim 2, wherein the venturi body comprises a drive oil feed pipe, a distal oil feed pipe and a flow oil feed pipe, the drive oil feed pipe being piped to the flow oil feed pipe; the far-end oil inlet pipe is connected with the flowing oil inlet pipe; the tip that the oil pipe was advanced in the drive is detachable joint, oil pipe detachable connection filter is advanced in the drive.
4. The fuel pump assembly of the low oil feed check valve venturi tube of claim 3, wherein the fuel storage barrel further comprises a baffle plate, and the baffle plate is arranged at an opening end of the driving flow passage where the steel ball is located.
5. The fuel pump assembly of the low oil feed check valve venturi tube of claim 4, further comprising a cylindrical filter screen disposed in said drive oil feed tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123282917.XU CN216741795U (en) | 2021-12-24 | 2021-12-24 | Fuel pump assembly of low oil inlet check valve venturi tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123282917.XU CN216741795U (en) | 2021-12-24 | 2021-12-24 | Fuel pump assembly of low oil inlet check valve venturi tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216741795U true CN216741795U (en) | 2022-06-14 |
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ID=81936575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123282917.XU Active CN216741795U (en) | 2021-12-24 | 2021-12-24 | Fuel pump assembly of low oil inlet check valve venturi tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216741795U (en) |
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2021
- 2021-12-24 CN CN202123282917.XU patent/CN216741795U/en active Active
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