CN105972282A - Valve body structure of fuel system - Google Patents
Valve body structure of fuel system Download PDFInfo
- Publication number
- CN105972282A CN105972282A CN201610471913.0A CN201610471913A CN105972282A CN 105972282 A CN105972282 A CN 105972282A CN 201610471913 A CN201610471913 A CN 201610471913A CN 105972282 A CN105972282 A CN 105972282A
- Authority
- CN
- China
- Prior art keywords
- valve body
- negative pressure
- fuel system
- body structure
- base
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
Abstract
The invention discloses a valve body structure of a fuel system. A valve body has a hollow valve body base; one end of the valve body base is sleeved with a valve body knob; a filter cover plate is arranged in the valve body base; one end of a positive pressing spring is fixed on a convex column in the center of the filter cover plate, and the other end of the positive pressing spring is fixed in a concave cavity of a positive pressing gasket; a circular diaphragm is arranged between the positive pressing gasket and a negative pressure gasket; a support base is arranged in the other end of the valve body base; and a negative pressure spring for supporting the negative pressure gasket is arranged in the support base. The valve body structure is reasonable in structure; and when air is replenished in the valve body by negative pressure, the air replenishing flow can be guaranteed, and the valve body cannot generate the noise problem under the condition of specific negative pressure flow.
Description
Technical field
The present invention relates to automotive fuel oil system field.
Background technology
Valve body, as the vitals of fuel system, plays the heaviest in terms of fuel system keeps pressure balance
The effect wanted.When the pressure in fuel system is more than the threshold values of default, and malleation valve is opened；Work as fuel oil
During intrasystem pressure subatmospheric, negative pressure valve is opened.Find through investigation, being permitted on existing market
Many valve bodies different properties, part valve body flow is less than normal, and easily occurs that abnormal sound etc. lacks because of diaphragm resonance during negative pressure
Point.
Summary of the invention
The technical problem to be solved is to realize a kind of valve body structure rational in infrastructure so that valve body exists
Not only flow of air supply is can guarantee that but also can guarantee that valve body does not haves different under specific underpressure flow condition during negative pressure QI invigorating
The problem of sound.
To achieve these goals, the technical solution used in the present invention is: fuel system valve body structure, valve body
There is hollow valve body base, be cased with knob of valve body outside described valve base one end, set in described valve base
Filtration cover plate, malleation spring one end is had to be fixed on the projection of described filtration cover plate central, described positive pressing spring
The other end is fixed in the cavity of malleation pad, is provided with circular film between described malleation pad and negative pressure pad,
It is provided with support seat inside the described valve base other end, in described support seat, is provided with the negative pressure supporting negative pressure pad
Spring.
Described negative pressure pad is provided with the internal diameter cushion chamber more than malleation pad cavity, described cavity and cushion chamber
Protrusion direction is identical.
Described negative pressure spring one end is enclosed within outside cushion chamber, and the other end is supported in the groove supporting seat.
Described negative pressure pad and cross section, film contact position undulate.
Described negative pressure pad is sheet metal.
Described valve base one end is provided with knob of valve body, and the other end is provided with external screw thread.
Described valve base and support seat integrated injection molding.
Body base of the present invention increases by one and supports seat, and under condition of negative pressure, ambient atmosphere passes through negative pressure diaphragm
Extruding negative pressure spring, when negative pressure flow reaches certain numerical value, diaphragm because being continued by ambient pressure
Descending, and another side cannot continue traveling downwardly because supporting the spacing of seat, the gap of diaphragm and negative pressure sheet metal is because propping up
The effect of support seat occurs in that irregular change, and then plays the effect avoiding resonance.This structure is injection knot
Structure, technique is simple, easy to process, easily promotes, and versatility is good, it is easy to batch realizes, cheap.
Accompanying drawing explanation
Labelling in the content expressed every width accompanying drawing in description of the invention below and figure is briefly described:
Fig. 1 is fuel system valve body structure schematic diagram；
Labelling in above-mentioned figure is: 1, knob of valve body；2, valve base；3, cover plate is filtered；4, positive pressure pad
Sheet；5, positive pressing spring；6, negative pressure spring；7, negative pressure pad；8, seat is supported；9, diaphragm.
Detailed description of the invention
The present invention be a kind of can efficient solution except fuel system valve body knot of valve body abnormal sound under the conditions of specific underpressure
Structure, valve body include knob of valve body 1, valve base 2, filter cover plate 3, malleation pad 4, positive pressing spring 5,
Negative pressure spring 6, negative pressure pad 7, support seat 8 and diaphragm 9.
Valve base 2 is hollow structure, is cased with knob of valve body 1, valve base 2 outside valve base 2 one end
It is provided with support seat 8 inside the other end, and the other end is provided with external screw thread.Valve base 2 is noted with supporting seat 8 one
Molded so that structure is more reliable and more stable, also can reduce production cost.
Being provided with filtration cover plate 3 in valve base 2, positive pressing spring 5 one end is fixed on filters the convex of cover plate 3 center
On post, positive pressing spring 5 other end is fixed in the cavity of malleation pad 4, and such fixed form just makes
Pressing spring 5 is fixed relatively reliable, is provided with circular film 9 between malleation pad 4 and negative pressure pad 7, supports seat
The negative pressure spring 6 supporting negative pressure pad 7 it is provided with in 8.It is recessed more than malleation pad 4 that negative pressure pad 7 is provided with internal diameter
The cushion chamber in chamber, cavity is identical with the protrusion direction of cushion chamber, so can save the volume of valve body, and energy
Thering is provided activity space, negative pressure spring 6 one end to be enclosed within outside cushion chamber to positive pressing spring 5, the other end is supported on
In the groove of support seat 8 so that negative pressure spring 6 fixing-stable is reliable, reduce noise and may occur.
When the pressure in fuel system is more than the threshold values of default, and gas push malleation pad 4 compresses malleation
Spring 5, malleation valve is opened；When pressure subatmospheric in fuel system, gas push negative pressure pad
7 compression negative pressure spring 6 negative pressure valves are opened, and when negative pressure continues to increase, withstanding of negative pressure pad 7 is propped up
Support seat 8, another side continues traveling downwardly, and owing to supporting the obstruct of seat 8, diaphragm 9 goes out with the gap of negative pressure pad 7
Show irregular change, and then avoid common resonance noise.
For improving muting function further, negative pressure pad 7 is sheet metal, and negative pressure pad 7 contacts with diaphragm 9
Cross section, position undulate, makes negative pressure pad 7 have bigger deformation space by wavy shaped configuration, it is possible to
More stop resonance noise.
Fuel system valve body structure efficient solution can remove fuel system valve body valve body abnormal sound under the conditions of specific underpressure
Structure, supports seat 8 by increasing by one at body base, and under condition of negative pressure, ambient atmosphere passes through negative pressure film
Sheet 9 extrudes negative pressure spring 6, when negative pressure flow reaches certain numerical value, diaphragm 9 because being pressed by the external world
Power continues traveling downwardly, and another side cannot continue traveling downwardly because supporting the spacing of seat 8, diaphragm 9 and negative pressure sheet metal
Gap occur in that irregular change because of the effect supporting seat 8, and then play the effect avoiding resonance.
Above in conjunction with accompanying drawing, the present invention is exemplarily described, it is clear that the present invention implements not by upper
State the restriction of mode, if the various unsubstantialities that the method design that have employed the present invention is carried out with technical scheme
Improvement, or the most improved design by the present invention and technical scheme directly apply to other occasion, all exists
Within protection scope of the present invention.
Claims (7)
1. fuel system valve body structure, valve body has hollow valve body base, described valve base one end outer cover
Having knob of valve body, be provided with filtration cover plate in described valve base, malleation spring one end is fixed on described filtering cover
On the projection at plate center, the described positive pressing spring other end is fixed in the cavity of malleation pad, described positive pressure pad
It is provided with circular film between sheet and negative pressure pad, it is characterised in that: it is provided with inside the described valve base other end
Support seat, in described support seat, be provided with the negative pressure spring supporting negative pressure pad.
Fuel system valve body structure the most according to claim 1, it is characterised in that: described negative pressure pad
Being provided with the internal diameter cushion chamber more than malleation pad cavity, described cavity is identical with the protrusion direction of cushion chamber.
Fuel system valve body structure the most according to claim 2, it is characterised in that: described negative pressure spring
One end is enclosed within outside cushion chamber, and the other end is supported in the groove supporting seat.
Fuel system valve body structure the most according to claim 3, it is characterised in that: described negative pressure pad
With cross section, film contact position undulate.
Fuel system valve body structure the most according to claim 1, it is characterised in that: described negative pressure pad
Sheet is sheet metal.
Fuel system valve body structure the most according to claim 1, it is characterised in that: described valve base
One end is provided with knob of valve body, and the other end is provided with external screw thread.
Fuel system valve body structure the most according to claim 1, it is characterised in that: described valve base
With support seat integrated injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610471913.0A CN105972282A (en) | 2016-06-24 | 2016-06-24 | Valve body structure of fuel system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610471913.0A CN105972282A (en) | 2016-06-24 | 2016-06-24 | Valve body structure of fuel system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105972282A true CN105972282A (en) | 2016-09-28 |
Family
ID=57019185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610471913.0A Pending CN105972282A (en) | 2016-06-24 | 2016-06-24 | Valve body structure of fuel system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105972282A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4498493A (en) * | 1981-06-24 | 1985-02-12 | Stant Inc. | Pressure valve assembly for a fuel tank filler neck cap |
| CN2238758Y (en) * | 1995-07-13 | 1996-10-30 | 三龙产业股份有限公司 | Fuel tank cover |
| JP2011132917A (en) * | 2009-12-25 | 2011-07-07 | Nifco Inc | Valve device for fuel tank |
| CN203009939U (en) * | 2012-12-30 | 2013-06-19 | 芜湖顺荣汽车部件股份有限公司 | Safety valve of fuel tank |
| CN203836319U (en) * | 2014-02-26 | 2014-09-17 | 北汽福田汽车股份有限公司 | Fuel tank cover valve and fuel tank cover |
-
2016
- 2016-06-24 CN CN201610471913.0A patent/CN105972282A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4498493A (en) * | 1981-06-24 | 1985-02-12 | Stant Inc. | Pressure valve assembly for a fuel tank filler neck cap |
| CN2238758Y (en) * | 1995-07-13 | 1996-10-30 | 三龙产业股份有限公司 | Fuel tank cover |
| JP2011132917A (en) * | 2009-12-25 | 2011-07-07 | Nifco Inc | Valve device for fuel tank |
| CN203009939U (en) * | 2012-12-30 | 2013-06-19 | 芜湖顺荣汽车部件股份有限公司 | Safety valve of fuel tank |
| CN203836319U (en) * | 2014-02-26 | 2014-09-17 | 北汽福田汽车股份有限公司 | Fuel tank cover valve and fuel tank cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |