CN205895454U - Fuel pump - Google Patents
Fuel pump Download PDFInfo
- Publication number
- CN205895454U CN205895454U CN201620866506.5U CN201620866506U CN205895454U CN 205895454 U CN205895454 U CN 205895454U CN 201620866506 U CN201620866506 U CN 201620866506U CN 205895454 U CN205895454 U CN 205895454U
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- main body
- oil
- lower cover
- main part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
Abstract
The utility model provides a fuel pump belongs to the motorcycle accessories field. Current fuel pump structural instability, the little problem of dust absorption have been solved to it. This fuel pump includes the upper cover, lower cover and main part, an upper cover, link firmly in proper order through the screw between lower cover and the main part, form the oil pocket between upper cover and the main part, form the negative pressure cavity between lower cover and the main part, be provided with on the main part terminal surface with the inside oil feed mouth that is linked together of oil pocket, the tip department that the oil feed mouth stretched into the oil pocket is provided with oil returning device, the lower cover inner wall has the recess that is linked together with the negative pressure cavity, and be provided with negative pressure spring and plastic sheet in the recess, be provided with the negative pressure diaphragm between lower cover and the main part, negative pressure spring one end is supported and is leaned on on the recess, the other end supports the plastic sheet and leans on on the negative pressure diaphragm, be provided with two check valves that left right direction is opposite in the main part, be provided with the oil film piece between upper cover and the main part, negative pressure diaphragm and oil film piece all adopt the material of double -layered cloth rubber to make. The utility model has the advantages of stable in structure, it is great to inhale the journey.
Description
Technical field
This utility model belongs to motorcycle accessories field, is related to a kind of pump, particularly to a kind of fuel pump.
Background technology
Fuel pump is one of basic composition of motorcycle fuel spraying system, and its effect is that fuel oil is inhaled from fuel tank
Go out, be transported in fuel feed pump by oil-out after pressurization, and certain fuel pressure is set up in fuel pressure regulator cooperation, existing
Pressurized fuel pump in, the pressure-sensitive diaphragm of negative pressure chamber is mostly plastic sheet material, is easily lost efficacy using rear film, simultaneously for a long time
Flow is relatively small.
Content of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, there is provided a kind of Stability Analysis of Structures, inhales
The larger fuel pump of journey.
The purpose of this utility model can be realized by following technical proposal: a kind of fuel pump, including on lid, lower cover and master
Body, is connected successively by screw between described upper lid, lower cover and main body, forms oil pocket between described upper lid and main body, under
Form negative pressure cavity between lid and main body, described main body end face is provided with and the inlet nozzle being connected inside oil pocket, it is special
Levy and be, the end that described inlet nozzle stretches into oil pocket is provided with oil return apparatus, and described lower cover inwall has and negative pressure cavity
It is provided with negative pressure spring and plastic sheet in the groove being connected, and described groove, be provided between described lower cover and main body
Negative pressure diaphragm, described negative pressure spring one end is resisted against on groove, and plastic sheet is resisted against on negative pressure diaphragm the other end, described
Two contrary check valves of left and right directions are provided with main body, between described upper lid and main body, are provided with oil film piece, described
Negative pressure diaphragm and oil film piece are all made using the material of canvas filler rubber.
In a kind of above-mentioned fuel pump, between described negative pressure diaphragm and main body, it is provided with seal washer, described oil
It is also equipped with seal washer between diaphragm and upper lid.
In a kind of above-mentioned fuel pump, described check valve is made up of plastic valve plate, rubber valve plate and fixing plug, institute
The plastic valve plate stated and rubber valve plate pass through fixing plug and are fixed on successively in main body.
In a kind of above-mentioned fuel pump, described oil return apparatus are made up of return spring and steel ball, described oil return bullet
Spring one end is resisted against the end of inlet nozzle, and the other end relies on steel ball.When oily cavity pressure is excessive, steel ball can be by ejection part
Divide fuel oil to flow back to fuel tank by oil return apparatus, serve the effect of blood pressure lowering.
Compared with prior art, the negative pressure diaphragm in this fuel pump and oil film piece are changed to adopt canvas filler rubber, pass through simultaneously
With the cooperation of negative pressure spring, make diaphragm vibration, this Stability Analysis of Structures, and oil pump flow, suction are larger.
Brief description
Fig. 1 is the structural representation of this fuel pump.
Fig. 2 is the cross-sectional schematic of a-a in Fig. 1.
Fig. 3 is the cross-sectional schematic of b-b in Fig. 2.
In figure, 1, Shang Gai；2nd, lower cover；3rd, main body；4th, oil pocket；5th, negative pressure cavity；6th, inlet nozzle；7th, oil return apparatus；8th, groove；
9th, negative pressure spring；10th, plastic sheet；11st, negative pressure diaphragm；12nd, check valve；13rd, oil film piece；14th, seal washer；15th, plastic valve plate；
16th, rubber valve plate；17th, fixing plug；18th, return spring；19th, steel ball.
Specific embodiment
The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further
Description, but this utility model is not limited to these embodiments.
As shown in Figure 1, Figure 2, Figure 3 shows, this fuel pump includes lid 1, lower cover 2 and main body 3, upper lid 1, lower cover 2 and main body 3 it
Between be connected successively by screw, upper lid 1 and main body 3 between formed oil pocket 4, between lower cover 2 and main body 3 formed negative pressure cavity 5, main body
The inlet nozzle 6 being provided with 3 end face and being connected inside oil pocket 4, the end that inlet nozzle 6 stretches into oil pocket 4 is provided with oil return
Device 7, lower cover 2 inwall has the groove 8 being connected with negative pressure cavity 5, and is provided with negative pressure spring 9 and plastic sheet 10 in groove 8,
It is provided with negative pressure diaphragm 11, negative pressure spring 9 one end is resisted against on groove 8, the other end is by plastic sheet 10 between lower cover 2 and main body 3
It is resisted against on negative pressure diaphragm 11, main body 3 is provided with two contrary check valves of left and right directions 12, sets between upper lid 1 and main body 3
It is equipped with oil film piece 13, negative pressure diaphragm 11 and oil film piece 13 are all made using the material of canvas filler rubber.
This fuel pump is used for the fuel oil of motorcycle tank is transported to the electromotor of a high position from low level, and its lower cover 2 connects to be sent out
Motivation, electromotor provides oil fuel feed pump positive/negative-pressure, and positive/negative-pressure promotes negative pressure spring 9 to drive negative pressure diaphragm 11 to vibrate, and makes negative pressure cavity 5
Space become and diminish greatly, the check valve 12 that the space of negative pressure cavity 5 becomes ambassador's oil pocket 4 is opened, and oil is sucked；The space of negative pressure cavity 5
Diminish and so that the check valve 12 of oil pocket is opened, oil is discharged；Simultaneously when inlet nozzle 6 pressure is larger, by the tune of oil return apparatus 18
Whole fuel-displaced mouthpiece 6 pressure is turned down, flow-reduction.
Describe in detail further, between the negative pressure diaphragm 11 in this fuel pump and main body 3, be provided with seal washer 14, oil film piece 13
It is also equipped with seal washer 14 and upper lid 1 between.
Describe in detail further, the check valve 12 in this fuel pump is by plastic valve plate 15, rubber valve plate 16 and fixing 17 groups of plug
Become, plastic valve plate 15 and rubber valve plate 16 pass through fixing plug 17 and be fixed on successively in main body 3.
Describe in detail further, the oil return apparatus 7 in this fuel pump are made up of return spring 18 and steel ball 19, return spring 18 1
End is resisted against the end of inlet nozzle 6, and the other end relies on steel ball 19.
Specific embodiment described herein is only explanation for example to this utility model spirit.This utility model institute
Belong to those skilled in the art described specific embodiment can be made with various modifications or supplement or using similar
Mode substitute, but without departing from of the present utility model spirit or surmount scope defined in appended claims.
Although more employing lid 1, lower cover 2, main body 3, oil pocket 4, negative pressure cavity 5, inlet nozzle 6, oil return apparatus herein
7th, groove 8, negative pressure spring 9, plastic sheet 10, negative pressure diaphragm 11, check valve 12, oil film piece 13, seal washer 14, plastic valve plate
15th, the term such as rubber valve plate 16, fixing plug 17, return spring 18, steel ball 19, but it is not precluded from the possibility using other terms
Property.It is used for the purpose of more easily describing and explaining essence of the present utility model using these terms；It is construed as any
A kind of additional restriction is all contrary with this utility model spirit.
Claims (4)
1. a kind of fuel pump, including on lid (1), lower cover (2) and main body (3), described upper lid (1), lower cover (2) and main body (3)
Between be connected successively by screw, form oil pocket (4) between described upper lid (1) and main body (3), lower cover (2) and main body (3) it
Between form negative pressure cavity (5), described main body (3) end face is provided with and the inlet nozzle (6) that is connected of oil pocket (4) inside, its
It is characterised by, the end that described inlet nozzle (6) stretches into oil pocket (4) is provided with oil return apparatus (7), in described lower cover (2)
Wall is had in the groove (8) being connected with negative pressure cavity (5), and described groove (8) and is provided with negative pressure spring (9) and plastic sheet
(10), it is provided with negative pressure diaphragm (11) between described lower cover (2) and main body (3), described negative pressure spring (9) one end is resisted against
On groove (8), plastic sheet (10) is resisted against on negative pressure diaphragm (11) other end, and described main body (3) is provided with two left sides
The contrary check valve of right direction (12), is provided with oil film piece (13) between described upper lid (1) and main body (3), described negative pressure
Diaphragm (11) and oil film piece (13) are all made using the material of canvas filler rubber.
2. a kind of fuel pump according to claim 1 it is characterised in that described negative pressure diaphragm (11) and main body (3) it
Between be provided with seal washer (14), be also equipped with seal washer (14) between described oil film piece (13) and upper lid (1).
3. a kind of fuel pump according to claim 1 is it is characterised in that described check valve (12) is by plastic valve plate
(15), rubber valve plate (16) and fixing plug (17) composition, described plastic valve plate (15) and rubber valve plate (16) pass through to fix
Plug (17) is fixed in main body (3) successively.
4. a kind of fuel pump according to claim 1 is it is characterised in that described oil return apparatus (7) are by return spring
(18) form with steel ball (19), described return spring (18) one end is resisted against the end of inlet nozzle (6), and the other end relies on steel
On pearl (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620866506.5U CN205895454U (en) | 2016-08-11 | 2016-08-11 | Fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620866506.5U CN205895454U (en) | 2016-08-11 | 2016-08-11 | Fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205895454U true CN205895454U (en) | 2017-01-18 |
Family
ID=57782168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620866506.5U Expired - Fee Related CN205895454U (en) | 2016-08-11 | 2016-08-11 | Fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205895454U (en) |
-
2016
- 2016-08-11 CN CN201620866506.5U patent/CN205895454U/en not_active Expired - Fee Related
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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: 20170118 Termination date: 20180811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |