CN204783386U - External fuel pump assembly - Google Patents
External fuel pump assembly Download PDFInfo
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- CN204783386U CN204783386U CN201520440886.1U CN201520440886U CN204783386U CN 204783386 U CN204783386 U CN 204783386U CN 201520440886 U CN201520440886 U CN 201520440886U CN 204783386 U CN204783386 U CN 204783386U
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- fuel
- centrifugal pump
- pump assembly
- external fuel
- pipeline
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Abstract
The utility model belongs to the technical field of liquid conveying and specifically relates to an external fuel pump assembly for being used for the motorcycle fuel is carried is related to. Through becoming an assembly with relevant pipeline sealing connection such as fuel pumps to it is internal at the cavity of resorption of assembly to make the fuel pack, through the fuel pump in the high -pressure oildom of the internal formation of epicoele, finally realize externalization of whole assembly. This assembly utensil is effectual avoid in fuel transportation process because the gaseous fuel turbulent flow phenomenon that causes and reduce an oil pipe in the flow resistance. The heat convection current that helps producing the fuel pump is even and increase radiating surface area. Can guarantee that centrifugal pump compression shock excursion in the course of the work is stable, improve the life of fuel pump. Require to hang down to the fuel recoverable amount in the oil tank, dismouting and maintenance are convenient.
Description
Technical field
The utility model relates to Liquid transfer field, especially relates to a kind of external fuel oil pump assembly for motorcycle fuel conveying.
Background technique
China Patent Publication No. CN101865057B, publication date on December 28th, 2011, the name of innovation and creation is called a kind of electric fuel pump assembly, that application discloses a kind of fuel pump be built in fuel tank.Its deficiency has certain requirement to the oil mass in fuel tank and oil level, and need in fuel tank, arrange complicated mount fixing structure.
Fuel pump is that vapour rubs the technical term of accessory industry, is one of fundamental composition of electric jet vehicle fuel injection system.The fuel pump of current motorcycle is arranged in fuel tank more, by the fuel delivery in fuel tank in motor.Effect is transported in fuel supply line after fuel oil sucking-off from fuel tank, pressurization, and certain fuel pressure is set up in fuel pressure regulator cooperation.The maximum pump oil pressure of fuel pump depends on the standard of pressure restrictor, if fuel pump pressure exceedes predetermined pressure restriction, pressure restrictor can open bypass makes fuel oil flow back to fuel pump inlet.
Summary of the invention
The purpose of this utility model is to provide a kind of easy for installation, and to the external fuel oil pump assembly that fuel level in tank does not almost require.It comprises: a body, has between a holding area, be divided into upper cavity and lower chamber between described holding area by dividing plate in described body; This lower chamber is equipped with an oil inlet pipe and a return tube, this upper cavity is equipped with an oil outlet tube, described oil outlet tube is sealedly connected with leaf filter two in upper cavity, described external one be provided with electrical plug.One centrifugal pump, being fixedly installed in lower chamber of its entirety, and the bottom of centrifugal pump is provided with oil inlet end, described oil inlet end and lower chamber through, described oil inlet end is sealedly connected with leaf filter one, the entirety trend of described leaf filter one and the parallel to an axis of centrifugal pump; The top of centrifugal pump is provided with oil outlet end, and described oil outlet end seals through through dividing plate and upper cavity, and the bottom of this centrifugal pump is also provided with exhaust port.One one-way valve, described one-way valve is arranged in described oil outlet tube, and described one-way valve is for stoping fuel flow returns in oil outlet tube in upper cavity;
Described oil outlet tube is provided with bypass, and the connecting end of described bypass and oil outlet tube is between one-way valve and described upper cavity.One pressure regulator valve, is tightly connected between the input end of described pressure regulator valve and described bypass; The output terminal of described pressure regulator valve is sealed with return tube by pipeline one and is communicated with; Described exhaust port is communicated with by sealing between pipeline two with described return tube.One cushion, described cushion bottom body and centrifugal pump between for impelling close contact between pipeline two and exhaust port.
Further be improved to, the power line of described centrifugal pump is connected by hermetic terminal with between described electrical plug; Described hermetic terminal comprises fixed hole, tenminal block, metal slotting ring, described metal slotting ring is electrically connected with between electrical plug, one end of described tenminal block is connected with metal slotting ring, be electrically connected between its other end with centrifugal pump, described tenminal block outer rim is provided with annular pawl, be provided with seal ring one between described tenminal block and fixed hole, provide fastening force to make seal ring one deformable seal by the interference fit between annular pawl and fixed hole.
Further be improved to, described pipeline one and pipeline two are two joints of three-way pipe, and the 3rd joint of described three-way pipe and return tube seal through.
Further be improved to, between described pressure regulator valve and bypass, be provided with seal ring two, between described pressure regulator valve and pipeline one, be provided with seal ring three.
Further be improved to, sealed by interference fit between described three-way pipe and return tube.
Further be improved to, described one-way valve is ball valve.
Further be improved to, described leaf filter one be arranged in parallel with leaf filter two.
Further be improved to, described body outer rim is provided with mounting hole.
Further be improved to, the acting surface of described cushion becomes Special-Shaped Surface, and the structure of described Special-Shaped Surface and the matching form of each contact jaw close.
The beneficial effects of the utility model are: the air in centrifugal pump can first be discharged by (1) pipeline two from return tube, the flow resistance effectively can avoided the fuel oil turbulent flow phenomenon in fuel delivery process because caused by gas and reduce in oil outlet tube; (2) fuel oil can realize sufficient contact by entering in lower chamber via oil inlet pipe, and the heat convection current contributing to fuel pump to produce evenly also increases the surface area of heat radiation; (3) time under engine idle conditions, by the fuel oil in oil outlet tube being flowed back to fuel tank through return tube after bypass pressure regulation, can ensure that centrifugal pump compression shock excursion is in the course of the work stablized, improve the working life of fuel pump; (4) require low to the fuel oil recoverable amount in fuel tank, dismounting and easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the profile outline of an embodiment of the utility model external fuel oil pump assembly;
Fig. 2 is the structure sectional view of an embodiment of the utility model external fuel oil pump assembly;
Fig. 3 is the internal structure schematic diagram of an embodiment of the utility model external fuel oil pump assembly;
The oil inlet end structural representation that Fig. 4 is the centrifugal pump in the fuel pump shown in Fig. 1;
Fig. 5 is the structural representation of the sealed connecting terminal of the centrifugal pump in the fuel pump shown in Fig. 1.
Description of reference numerals:
10-body, 11-dividing plate, between 12-holding area, 122-upper cavity, 124-lower chamber, 13-oil inlet pipe, 14-return tube, 15-oil outlet tube, 152-one-way valve, 154-bypass, 16-electrical plug, 17-mounting hole, 20-centrifugal pump, 21-oil inlet end, 22-leaf filter one, 23-oil outlet end, 24-leaf filter two, 25-exhaust port, 26-power line, 27-hermetic terminal, 272-fixed hole, 274-tenminal block, 276-metal slotting ring, 277-annular pawl, 278-seal ring one, 30-pressure regulator valve, 32-pipeline one, 34-pipeline two, 35-seal ring two, 36-seal ring three, 40-cushion.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect of the mutual alignment between the shape of each component involved in embodiment of the present utility model, structure, each several part and annexation, each several part and working principle etc. are described in further detail.
As shown in Figure 1, this external fuel oil pump assembly is tightly connected is formed by upper end cap, lower end cap, staving.Wherein be fastened by bolts between end cap and staving up and down.Upper and lower end cap and staving together constitute the body 10 of fuel oil pump assembly, and body 10 inside to be formed with between holding area 12 for arranging various element.Between holding area, be provided with dividing plate 11 in 12, this dividing plate 11 is by 12 upper cavity 122 and the lower chambers 124 being divided into relative closure between holding area.This lower chamber 124 is equipped with oil inlet pipe 13 and a return tube 14, this upper cavity 122 is equipped with an oil outlet tube 15; Electrical plug 16 is provided with for assembly in-line power in the outer one of body 10.
As shown in Figure 2,3, in lower chamber 124, be provided with a centrifugal pump 20, being fixedly installed in lower chamber 124 of its entirety, and the bottom of centrifugal pump 20 is provided with oil inlet end 21.This oil inlet end 21 is through with lower chamber 124, oil inlet end 21 is sealedly connected with leaf filter 1, fuel oil enters through oil inlet pipe 13 and fills whole lower chamber 124, through entering into centrifugal pump 20 by oil inlet end 21 then filtered out the impurity in fuel oil fast by leaf filter 1 after.
In order to the compact structure of assembly can be made, the entirety trend of this leaf filter 1 and the parallel to an axis of centrifugal pump 20.The top of centrifugal pump 20 is provided with oil outlet end 23, and this oil outlet end 23 passes dividing plate 11 and seals through with upper cavity 122, makes the fuel oil via centrifugal pump 20 form high pressure fuel district in upper cavity 122.Then fuel oil is made by oil outlet tube 15 to engine oil, in order to avoid the fuel oil being supplied to motor contains impurity, so oil outlet tube 15 is sealedly connected with leaf filter 2 24 in upper cavity 122.Fuel delivery is carried out, so be provided with the exhaust port 25 for air in drain pump on the bottom of centrifugal pump 20 owing to adopting centrifugal pump 20.
When centrifugal pump 20 quits work, because the oil pressure in oil outlet tube 15 can higher than the oil pressure in upper cavity 122, so the phenomenon that fuel oil flows backwards can be produced.In order to prevent the generation in this situation, oil outlet tube 15 is provided with one-way valve 152, this one-way valve 152 is hemispheric ball valve, is fixedly connected with piston rod in one end of ball valve.Simultaneously in order to prevent because motor reduces fuel demand in the idling state, cause that oil pressure in oil outlet tube 15 and upper cavity 122 is too high to be damaged centrifugal pump 20 and whole assembly.Pipeline on oil outlet tube 15 between one-way valve 152 and upper cavity is sealedly connected with the bypass 154 of pressure release.
This bypass 154 is arranged along the direction pointing to return tube 14, bypass 154 is also provided with pressure regulator valve 30, is fastened be sealed connected together between the input end of this pressure regulator valve 30 and bypass 154 by seal ring 2 35.The output terminal of pressure regulator valve 30 is sealed connected together by seal ring 3 35 and pipeline 1, and the fuel oil that bypass 154 is let out that is tightly connected between pipeline 1 and return tube 14 is input in fuel tank by return tube 14.Because the oil pressure in the bypass 154 of pressure release and pipeline 1 is comparatively large, so need to ensure that the fuel oil completely and in lower chamber 122 separates by strict sealing.
As shown in Figure 3,4, the bottom of centrifugal pump 20 is provided with exhaust port 25, this exhaust port 25 air of discharging easily and fuel oil mixing and to cause in oil circuit containing air, causes flow resistance increase, even also can cause and burn uneven etc., easily cause damage to motor etc. lower chamber 124 in.So installed a three-way pipe in the present embodiment, a siphunculus of this three-way pipe and pipeline 1, its another bipass and return tube 14 interference fit have been set in together.Its three-way pipe and exhaust port 25 are sealed connected together.Such high pressure oil return and air can guide fuel tank into by this three-way pipe.
As shown in Figure 5, in upper cavity 122, the power line 26 of centrifugal 20 is connected by hermetic terminal 17 with between described electrical plug 16; Sealing terminal 17 comprises fixed hole 272, tenminal block 274, metal slotting ring 276, wherein be electrically connected between metal slotting ring 276 with electrical plug 16, one end of described tenminal block 274 is connected with metal slotting ring 276, be electrically connected between its other end with centrifugal pump 20, described tenminal block 274 outer rim is provided with annular pawl 277, be provided with seal ring 1 between this tenminal block 274 and fixed hole 272, provide fastening force to make seal ring 1 deformable seal by the interference fit between annular pawl 277 and fixed hole 272.
As shown in Figure 2,3, 4, in order to the pipeline 2 34 in threeway being made with exhaust port 25 compact siro spinning technology and sealing, cushion 40 is provided with between body 10 and the bottom of centrifugal pump 20, this cushion 40 is arranged to and special-shaped step surface with the side contacted bottom centrifugal pump 20, distance bottom each step surface distance centrifugal pump 20 and between the stress surface of pipeline 2 34 is equal, can effectively ensure like this centrifugal pump 20 operationally can stable operation, noise low.And close contact between pipeline 2 34 and exhaust port 25 can be made to realize being tightly connected.
Claims (9)
1. external fuel oil pump assembly, comprising:
One body (10), has (12) between a holding area in described body (10), between described holding area, (120 are divided into upper cavity (122) and lower chamber (124) by dividing plate (11); This lower chamber (124) is equipped with an oil inlet pipe (13) and a return tube (14), this upper cavity (122) is equipped with an oil outlet tube (15), described oil outlet tube (15) is sealedly connected with leaf filter two (24) in upper cavity (122), described body (10) outward one be provided with electrical plug (16);
One centrifugal pump (20), its entirety be fixedly installed in lower chamber (124), and the bottom of centrifugal pump (20) is provided with oil inlet end (21), described oil inlet end (21) is through with lower chamber (124), described oil inlet end (21) is sealedly connected with leaf filter one (22), the entirety trend of described leaf filter one (22) and the parallel to an axis of centrifugal pump (20); The top of centrifugal pump (20) is provided with oil outlet end (23), and described oil outlet end (23) seals through through dividing plate (11) and upper cavity (122), and the bottom of this centrifugal pump (20) is also provided with exhaust port (25);
One one-way valve (152), described one-way valve (152) is arranged in described oil outlet tube (15), and described one-way valve (152) is for stoping fuel flow returns in oil outlet tube (15) in upper cavity (122);
It is characterized in that:
Described oil outlet tube (15) is provided with bypass (154), the connecting end of described bypass (154) and oil outlet tube (15) is positioned between one-way valve (152) and described upper cavity (122);
One pressure regulator valve (30), is tightly connected between the input end of described pressure regulator valve (30) and described bypass (30); The output terminal of described pressure regulator valve (30) is sealed with return tube (14) by pipeline one (32) and is communicated with; Described exhaust port (25) is communicated with by sealing between pipeline two (34) with described return tube (14);
One cushion (40), described cushion (40) is positioned between body (10) and centrifugal pump (20) bottom for impelling close contact between pipeline two (34) and exhaust port (25).
2. external fuel oil pump assembly as claimed in claim 1, is characterized in that: the power line (26) of described centrifugal pump (20) is connected by hermetic terminal (27) with between described electrical plug (16), described hermetic terminal (27) comprises fixed hole (272), tenminal block (274), metal slotting ring (276), described metal slotting ring (276) is electrically connected with between electrical plug (16), one end of described tenminal block (274) is connected with metal slotting ring (276), be electrically connected between its other end with centrifugal pump (20), described tenminal block (274) outer rim is provided with annular pawl (277), seal ring one (278) is provided with between described tenminal block (274) and fixed hole (272), there is provided fastening force to make seal ring one (278) deformable seal by the interference fit between annular pawl (277) and fixed hole (272).
3. external fuel oil pump assembly as claimed in claim 1 or 2, it is characterized in that: two joints that described pipeline one (32) and pipeline two (34) are three-way pipe, the 3rd joint of described three-way pipe and return tube (14) seal through.
4. external fuel oil pump assembly as claimed in claim 3, is characterized in that: be provided with seal ring two (35) between described pressure regulator valve (30) and bypass (154), is provided with seal ring three (36) between described pressure regulator valve (30) and pipeline one (32).
5. external fuel oil pump assembly as claimed in claim 4, be is characterized in that: sealed by interference fit between described three-way pipe and return tube (14).
6. external fuel oil pump assembly as claimed in claim 5, is characterized in that: described one-way valve (152) is ball valve.
7. external fuel oil pump assembly as claimed in claim 6, is characterized in that: described leaf filter one (22) be arranged in parallel with leaf filter two (24).
8. external fuel oil pump assembly as claimed in claim 7, is characterized in that: described body (10) outer rim is provided with mounting hole (17).
9. external fuel oil pump assembly as claimed in claim 8, it is characterized in that: the acting surface of described cushion (40) becomes Special-Shaped Surface, the structure of described Special-Shaped Surface and the matching form of each contact jaw close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440886.1U CN204783386U (en) | 2015-06-25 | 2015-06-25 | External fuel pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520440886.1U CN204783386U (en) | 2015-06-25 | 2015-06-25 | External fuel pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204783386U true CN204783386U (en) | 2015-11-18 |
Family
ID=54523448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520440886.1U Expired - Fee Related CN204783386U (en) | 2015-06-25 | 2015-06-25 | External fuel pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204783386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282993A (en) * | 2020-11-16 | 2021-01-29 | 众恒汽车部件有限公司 | Fuel pump assembly of motorcycle |
-
2015
- 2015-06-25 CN CN201520440886.1U patent/CN204783386U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282993A (en) * | 2020-11-16 | 2021-01-29 | 众恒汽车部件有限公司 | Fuel pump assembly of motorcycle |
| CN112282993B (en) * | 2020-11-16 | 2024-05-31 | 众恒汽车部件有限公司 | Motorcycle fuel pump assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20210625 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |