CN109826732B - Low-pressure external pump assembly - Google Patents
Low-pressure external pump assembly Download PDFInfo
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- CN109826732B CN109826732B CN201910236956.4A CN201910236956A CN109826732B CN 109826732 B CN109826732 B CN 109826732B CN 201910236956 A CN201910236956 A CN 201910236956A CN 109826732 B CN109826732 B CN 109826732B
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- oil
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- fuel
- baffle
- pump
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Abstract
The utility model provides an external pump assembly of low pressure, including oil pump main part and first filter screen, the oil pump main part includes the casing, the pump body, the check valve, the float, balancing weight and oil storage section of thick bamboo, the opening has been seted up on the casing, be provided with the baffle in the opening, the oil inlet has been seted up at the middle part of baffle, the float is located baffle towards open-ended one side, one side of float towards the baffle is connected with the balancing weight, the middle part of balancing weight is provided with the intercommunication post towards the baffle protrusion, the through-hole has been seted up at the middle part of intercommunication post, be provided with the boss in the through-hole, the check valve includes umbrella-shaped dish, intermediate post and bulge loop, the intermediate post is located the through-hole of intercommunication post, and the boss is located between umbrella-shaped dish and the bulge loop, be provided with the oil return opening between the top of the pump body and the oil storage section of thick bamboo, the bottom of thick bamboo is provided with the connector with the oil passage intercommunication. When the fuel in the fuel tank is insufficient, the fuel recovered by the fuel storage cylinder can still be supplied to the fuel injector for a period of time, so that the utilization rate of the fuel is improved.
Description
Technical Field
The invention relates to the field of vehicle oil pumps, in particular to a low-pressure external pump assembly.
Background
The vehicular oil pump is a device for pumping the gasoline in the tank to the fuel injector. The low-pressure external pump is partially arranged outside the oil tank, the injection pressure cannot be formed due to the low pressure, and when the fuel in the oil tank is insufficient, the fuel is difficult to continue to supply for the fuel injector.
Disclosure of Invention
In view of the above, the present invention provides a low-pressure external pump assembly that can supply fuel to a fuel injector for a period of time when fuel in a fuel tank is insufficient, and improve the utilization rate of gasoline, so as to solve the above problems.
The utility model provides an external pump assembly of low pressure, including the first filter screen of the first end outside of oil pump main part is located to first end and cover, the oil pump main part includes the casing, be located the pump body in the casing, the check valve, the float, balancing weight and oil storage section of thick bamboo, the opening has been seted up on the casing of the first end of oil pump main part, be provided with the baffle of being connected with the casing in the opening, the oil inlet has been seted up at the middle part of baffle, the check valve activity is located oil inlet department, the float is located baffle towards open-ended one side, one side of float towards the baffle is connected with the balancing weight, the middle part of balancing weight is provided with the intercommunication post towards the baffle protrusion, the through-hole has been seted up at the middle part of intercommunication post, be provided with the boss in the through-hole, the intermediate pillar and the bulge that are connected perpendicularly with the middle part of umbrella form the intermediate pillar and the bulge sets up on the circumference lateral wall of intermediate pillar, umbrella form the diameter of umbrella dish towards the pump body setting, the diameter of umbrella dish is greater than the biggest internal diameter of oil inlet, the intermediate pillar is arranged in the through-hole of the intercommunication post, and the boss is located between umbrella dish and the bulge, the oil storage section of thick bamboo is located the outside of the pump from bottom cover, the bottom forms towards one side of the baffle, form between the oil channel and the top of the oil storage channel has been provided with the oil channel and oil channel, oil channel and oil channel bottom between the pump.
Further, the middle part protrusion of baffle towards open-ended one side is provided with the boss, and the oil inlet sets up in the middle part of boss.
Further, a groove is formed in one side, facing the partition plate, of the floater, corresponding to the boss, and the balancing weight is located in the groove and is tightly attached to the floater.
Further, the shape of the communication column is a truncated cone.
Further, the side surface of the umbrella-shaped disc, which faces the pump body, is a convex spherical curved surface, and the side surface of the umbrella-shaped disc, which is far away from the pump body, is a circular plane.
Further, the oil inlet is circular, and the diameter of the circular plane of the umbrella-shaped disc is larger than that of the oil inlet.
Further, a second filter screen is arranged in the oil storage cylinder at the connecting port.
Compared with the prior art, the low-pressure external pump assembly comprises an oil pump main body with a first end positioned in an oil tank and a first filter screen sleeved outside the first end of the oil pump main body, wherein the oil pump main body comprises a shell, a pump body positioned in the shell, a check valve, a floater, a balancing weight and an oil storage cylinder, an opening is formed in the shell positioned at the first end of the oil pump main body, a partition plate connected with the shell is arranged in the opening, an oil inlet is formed in the middle of the partition plate, the check valve is movably positioned at the oil inlet, the floater is movably positioned at one side of the partition plate facing the opening, the balancing weight is connected to one side of the floater facing the partition plate, a communicating column is arranged at the middle of the communicating column in a protruding manner, a through hole is formed in the middle of the communicating column, a boss is arranged in the through hole, the check valve comprises an umbrella-shaped disk, a middle column vertically connected with the middle of the umbrella-shaped disk and a convex ring protruding on the circumferential outer side wall of the middle column, the umbrella-shaped disk faces the pump body, the diameter of the umbrella-shaped disk is larger than the maximum inner diameter of the oil inlet, the middle column is positioned in the through hole of the communicating column, the boss is positioned between the umbrella-shaped disk and the convex ring, the oil storage cylinder is sleeved outside the oil inlet, the bottom of the partition plate is, the communicating column is formed between the bottom of the partition plate and the oil storage cylinder passes through the oil storage channel, and the oil storage channel is arranged at the top of the pump body. When the fuel in the fuel tank is insufficient, the fuel recovered by the fuel storage cylinder can still be supplied to the fuel injector for a period of time, so that the utilization rate of the fuel is improved.
Drawings
Embodiments of the invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic perspective view of a low-pressure external pump assembly provided by the invention.
FIG. 2 is a schematic partial cross-sectional view of a low pressure external pump assembly according to the present invention.
Fig. 3 is an enlarged schematic view of the portion a in fig. 2.
Fig. 4 is a schematic view of another working state of the low-pressure external pump assembly provided by the invention.
Fig. 5 is a perspective view of the float, weight and check valve.
Fig. 6 is a schematic perspective view of the weight block in fig. 5.
Fig. 7 is a perspective view of the weight and check valve of fig. 5 from another perspective.
Detailed Description
Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the description herein of the embodiments of the invention is not intended to limit the scope of the invention.
Referring to fig. 1 to 7, the low-pressure external pump assembly provided by the present invention includes an oil pump main body 10 with a first end located in an oil tank, a first filter screen 20 sleeved outside the first end of the oil pump main body 10, and a buoy 30 rotatably connected to the oil pump main body 10 and located in the oil tank.
The oil pump body 10 includes a housing 11, a pump body 13 located in the housing 11, a check valve 15, a float 16, a weight 17, and an oil reservoir 19.
The first filter screen 20 is provided with a plurality of filter holes 21.
An opening 12 is formed in the shell 11 at the first end of the oil pump main body 10, a partition 14 connected with the shell 11 is arranged in the opening 12, a boss 141 is arranged in the middle of one side of the partition 14, which faces the opening 12, of the partition, an oil inlet 142 is formed in the middle of the boss 141, and a check valve 15 is movably arranged at the oil inlet 142.
The float 16 is located on the side of the partition 14 facing the opening 12 and is slidably connected to the housing 11 at the opening 12.
The side of the floater 16 facing the partition plate 14 is provided with a groove 161 corresponding to the boss 141, and the balancing weight 17 is positioned in the groove 161 and closely attached to the floater 16. The weight 17 is used to adjust the weight of the float 16.
The middle part towards baffle 14 protrusion of balancing weight 17 is provided with the intercommunication post 171, and the through-hole has been seted up at the middle part of intercommunication post 171. A boss 172 is disposed within the through bore. In the present embodiment, the communication column 171 has a truncated cone shape.
The check valve 15 includes an umbrella-shaped disc 151, a middle post 152 vertically connected to the middle of the umbrella-shaped disc 151, and a convex ring 153 convexly provided on the circumferential outer side wall of the middle post 152. The umbrella-like disk 151 is disposed toward the pump body 13.
The side of the umbrella-shaped disc 151 facing the pump body 13 is a convex spherical curved surface, the side of the umbrella-shaped disc 151 away from the pump body 13 is a round plane, and the diameter of the side of the umbrella-shaped disc 151 away from the pump body 13 is larger than the maximum inner diameter of the oil inlet 142. In this embodiment, the oil inlet 142 is circular, and the diameter of the side surface of the umbrella-shaped disc 151 away from the pump body 13 is larger than the diameter of the oil inlet 142.
The intermediate post 152 is located in the through hole of the communication post 171, and the boss 172 is located between the umbrella-like disc 151 and the collar 153.
The oil storage cylinder 19 is sleeved outside the pump body 13 from the bottom, and the pump body 13 passes through the bottom of the oil storage cylinder 19. An oil passage is formed between the bottom of the oil reservoir 19 and the partition 14.
An oil return port 181 is arranged between the top of the pump body 13 and the oil storage barrel 19. The bottom of the oil storage cylinder 19 is provided with a connection port 191 communicated with the oil passing channel, and a second filter screen 192 is arranged inside the oil storage cylinder 19 at the connection port 191. The second screen 192 is used to further filter the petrol in the reservoir 19.
Referring to fig. 2, when the amount of the gasoline in the tank is sufficient, the float 16 moves upward under the buoyancy of the gasoline, so that the communication column 171 of the counterweight 17 lifts up the check valve 15, thereby causing the umbrella-shaped disc 151 to be away from the oil inlet 142, forming a gap between the umbrella-shaped disc 151 and the partition 14, causing the oil inlet 142 to be opened, and the gasoline sequentially passes through the first filter screen 20, the oil inlet 142 and the oil passing channel to enter the pump body 13, as indicated by the arrows.
Excess gasoline pumped by the pump body 13 enters the oil storage barrel 19 through the oil return port 181 for temporary storage. The excess gasoline is recovered in this way.
Referring to fig. 4, when the gasoline in the tank is insufficient to lift the float 16, the float moves along with the liquid surface of the gasoline in a direction away from the pump body 13, and the boss 172 of the counterweight 17 abuts against the convex ring 153 of the check valve 15 and pulls the check valve 15 to move together until the umbrella-shaped disc 151 of the check valve 15 completely closes the oil inlet 142, and at this time, the gasoline cannot enter the pump body 13 through the oil inlet 142. Because the oil storage cylinder 19 is communicated with the oil passing channel through the connection port 191, under the suction action of the pump body 13, the gasoline in the oil storage cylinder 19 sequentially passes through the second filter screen 192, the connection port 191 and the oil passing channel to enter the pump body 13, as shown by an arrow.
Compared with the prior art, the low-pressure external pump assembly comprises the oil pump main body 10 with the first end positioned in the oil tank and the first filter screen 20 sleeved outside the first end of the oil pump main body 10, wherein the oil pump main body 10 comprises the shell 11, the pump body 13 positioned in the shell 11, the check valve 15, the floater 16, the balancing weight 17 and the oil storage barrel 19, the shell 11 positioned at the first end of the oil pump main body 10 is provided with the opening 12, the opening 12 is internally provided with the baffle 14 connected with the shell 11, the middle part of the baffle 14 is provided with the oil inlet 142, the check valve 15 is movably positioned at the oil inlet 142, the floater 16 is movably positioned at one side of the baffle 14 facing the opening 12, one side of the floater 16 facing the baffle 14 is connected with the balancing weight 17, the middle part of the balancing weight 17 is convexly provided with the communicating post 171 towards the baffle 14, the middle part of the communicating post 171 is provided with the through hole, the through hole is arranged in the middle part of the communicating post 171, the through hole is internally provided with the boss 172, the check valve 15 comprises the umbrella-shaped disc 151, the middle post 152 vertically connected with the middle part of the umbrella-shaped disc 151 and the convex ring 153 convexly arranged on the circumferential outer side wall 153 of the middle post 152, the umbrella-shaped disc 151 is convexly arranged towards the direction of the shell 13, the diameter of the umbrella-shaped disc 151 is larger than the oil inlet 142, the middle post 142 is movably arranged at the side of the middle part of the middle post 19 is provided with the connecting the oil storage barrel 19, the oil storage barrel 19 is in the bottom of the oil storage barrel 19, the oil storage barrel 19 is communicated with the bottom channel is formed between the top of the oil storage barrel 19, and the oil inlet is provided with the oil channel is communicated with the bottom through the oil inlet channel 19, and the oil channel 19 and the upper end is provided with the through hole 19. When the fuel in the fuel tank is insufficient, the fuel recovered by the fuel storage cylinder 19 can still be supplied to the fuel injector for a period of time, so that the utilization rate of the fuel is improved.
The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions or improvements within the spirit of the present invention are intended to be covered by the claims of the present invention.
Claims (4)
1. A low pressure external pump assembly at least partially disposed in a tank, characterized by: the oil pump comprises an oil pump main body with a first end positioned in an oil tank and a first filter screen sleeved outside the first end of the oil pump main body, wherein the oil pump main body comprises a shell, a pump body positioned in the shell, a check valve, a floater, a balancing weight and an oil storage cylinder; a boss is arranged in the middle of one side of the partition plate, which faces the opening, in a protruding mode, and an oil inlet is arranged in the middle of the boss; the side, facing the partition plate, of the floater is provided with a groove corresponding to the boss, and the balancing weight is positioned in the groove and is tightly attached to the floater; the shape of the communicating column is round table shape.
2. The low pressure external pump assembly of claim 1, wherein: the side surface of the umbrella-shaped disc, which faces the pump body, is a convex spherical curved surface, and the side surface of the umbrella-shaped disc, which is far away from the pump body, is a circular plane.
3. The low pressure external pump assembly of claim 2, wherein: the oil inlet is circular, and the diameter of the circular plane of the umbrella-shaped disc is larger than that of the oil inlet.
4. The low pressure external pump assembly of claim 1, wherein: the second filter screen is arranged in the oil storage cylinder at the connecting port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236956.4A CN109826732B (en) | 2019-03-27 | 2019-03-27 | Low-pressure external pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236956.4A CN109826732B (en) | 2019-03-27 | 2019-03-27 | Low-pressure external pump assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109826732A CN109826732A (en) | 2019-05-31 |
| CN109826732B true CN109826732B (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910236956.4A Active CN109826732B (en) | 2019-03-27 | 2019-03-27 | Low-pressure external pump assembly |
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| CN (1) | CN109826732B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0976602A2 (en) * | 1998-07-27 | 2000-02-02 | Kautex Textron GmbH & Co. KG. | Fuel tank |
| CN202628344U (en) * | 2012-06-14 | 2012-12-26 | 重庆宗申发动机制造有限公司 | External electric spraying oil pump of motorcycle |
| CN103850835A (en) * | 2014-03-27 | 2014-06-11 | 重庆万力联兴实业(集团)有限公司 | Electric fuel pump assembly |
| CN205277649U (en) * | 2015-12-30 | 2016-06-01 | 宁波洛卡特汽车零部件有限公司 | Prevent gasoline pump assembly of flowing backwards |
| CN105952557A (en) * | 2016-06-30 | 2016-09-21 | 浙江锦佳汽车零部件有限公司 | Fuel oil pump assembly of dual-oil-tank system |
| CN209586561U (en) * | 2019-03-27 | 2019-11-05 | 众恒汽车部件有限公司 | The external pump assembly of low pressure |
-
2019
- 2019-03-27 CN CN201910236956.4A patent/CN109826732B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0976602A2 (en) * | 1998-07-27 | 2000-02-02 | Kautex Textron GmbH & Co. KG. | Fuel tank |
| CN202628344U (en) * | 2012-06-14 | 2012-12-26 | 重庆宗申发动机制造有限公司 | External electric spraying oil pump of motorcycle |
| CN103850835A (en) * | 2014-03-27 | 2014-06-11 | 重庆万力联兴实业(集团)有限公司 | Electric fuel pump assembly |
| CN205277649U (en) * | 2015-12-30 | 2016-06-01 | 宁波洛卡特汽车零部件有限公司 | Prevent gasoline pump assembly of flowing backwards |
| CN105952557A (en) * | 2016-06-30 | 2016-09-21 | 浙江锦佳汽车零部件有限公司 | Fuel oil pump assembly of dual-oil-tank system |
| CN209586561U (en) * | 2019-03-27 | 2019-11-05 | 众恒汽车部件有限公司 | The external pump assembly of low pressure |
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| Publication number | Publication date |
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| CN109826732A (en) | 2019-05-31 |
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