CN206918353U - A kind of overflow cutting valve - Google Patents
A kind of overflow cutting valve Download PDFInfo
- Publication number
- CN206918353U CN206918353U CN201720760735.3U CN201720760735U CN206918353U CN 206918353 U CN206918353 U CN 206918353U CN 201720760735 U CN201720760735 U CN 201720760735U CN 206918353 U CN206918353 U CN 206918353U
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- CN
- China
- Prior art keywords
- floating core
- auxiliary member
- main part
- passage
- valve
- 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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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model discloses a kind of overflow cutting valve, the installation groove to lower recess is provided with the upper surface of floating core main part, floating core auxiliary member is arranged in installation groove and floating core auxiliary member fluctuates in installation groove, it is floating to be provided with limit assembly between core auxiliary member and floating core main part, case top is respectively arranged with passage and main channel, the sealing thin rubber sheet to be cooperated with passage is provided with floating core main part, the rubber seal to be cooperated with main channel is provided with floating core auxiliary member；Its advantage is when vehicle jolts or overturns, and the floating core assembly of valve is horizontal, and the floating core assembly of spring promotion valve, which moves forward, which makes rubber seal seal main channel, seals thin rubber sheet seals passage, prevents fuel tank internal combustion oil spill from going out；When vehicle is returned under normal condition, floating core assembly from it is horizontal transform to vertical state during, sealing thin rubber sheet separates with passage, and rubber seal separates with main channel, and air pressure arrival balances, and main channel is in normally state.
Description
Technical field
A kind of stop valve in vehicle fuel tank is the utility model is related to, is cut off more particularly, to a kind of overflow
Valve.
Background technology
Overflow cutting valve is usually mounted with vehicle fuel tank, is had the effect that：1) during vehicle fuel tank oiling, pass through
Overflow cutting valve makes vehicle fuel tank and air have certain passage；And after vehicle fuel tank fills fuel oil, overflow cutting valve
It can automatically close, prevent fuel oil from being overflowed from overflow cutting valve.2) above all when position suddenly change (such as vehicle of fuel tank
Overturn), overflow cutting valve can prevent fuel oil from flowing out.September authorizes the Patent No. 201120078737.7 announced on 14th within 2011
Entitled " a kind of overflow cutting valve, air admission hole is provided with it discloses valve casing upper end, and being set in valve casing can be in valve casing up and down
The valve of floating floats core, and valve is floated and is provided with clip on core, and rubber valve is provided with clip, and the upper of core is floated as skin valve is close to valve
Surface, valve is floating to be provided with spring between core and valve bottom.During the normal oiling of fuel tank or with oil, valve floats core and falls back to valve
Bottom, spring are in compressive state, form gas channel in valve body, fuel tank is kept normal air pressure.When fuel tank internal combustion
When oil is filled it up with, valve floats buoyancy float downward of the core in fuel oil, and rubber valve blocks the lower end of air admission hole, and fuel oil can be prevented from entering
Stomata is to outflow.The valve mouth of pipe of the overflow cutting valve is connected with canister.The big portion of oil gas that fuel tank is distributed by overflow cutting valve
Divide and enter canister, be discharged into air after being filtered by canister again.
ORVR (Onboard Refueling Vapor Recovery) is vehicle-mounted oil filling gas recovery system for oil, is a kind of car
Emission control systems, it can collect the fuel vapor evaporated in refueling process from fuel tank.The technology is U.S. EPA
Released in 1994 using a kind of alternative as two level gas recovery system for oil.In the oiling gas recovery system for oil, automobile
One limitation stop valve that refuels, including a valve body and gs-oil separator, the Single port and peace of gs-oil separator are installed on fuel tank
Overflow cutting valve connection on vehicle fuel tank, the another port of gs-oil separator connects with canister.Oiling limitation is cut
The function of disconnected valve is：Upset when must seal, closes after must reopen, dynamic leakage must it is small, prevent liquid infiltration
In canister, oil level close high precision, while undertake the oil gas distributed fully enter canister filtering.
Valve body on limitation of refueling stop valve includes valve inner housing and valve floats core, and the bottom of valve inner housing and valve are floated between core
Spring is provided with, valve floats the seal for being provided with core and coordinating with the oil gas sending-out hole of valve inner housing, when the position of fuel tank is dashed forward
So during change, valve floats core and is in transverse state, and under the action of the spring, the seal that valve is floated on core blocks oil gas sending-out hole, with
Prevent the spilling of fuel oil.In order to rapidly discharge the air in fuel tank in refueling process, it is necessary to mouth by oil gas sending-out hole
Footpath is set more a little bigger, and the oil gas sending-out hole of larger caliber needs to coordinate with larger-diameter seal, larger-diameter sealing
Part has stronger adsorption capacity, and seal has better seal performance.When valve body is under vertical state, valve floats oneself of core
Seal is left oil gas sending-out hole again, because oil gas sending-out hole is connection canister, dirt of the oil gas to air can be reduced
Dye.And existing overflow valve is without big passage bore, oil gas directly leads directly to air by oil filler during oiling, air is caused larger
Pollution.
The content of the invention
Technical problem to be solved in the utility model be to provide it is a kind of can energy under excellent sealing, normal condition in upset
Ensure the overflow cutting valve of oil gas emission path conducting.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of overflow cutting valve, including valve body
And bonnet, described bonnet are arranged on described valve body, described valve body includes housing and valve floats core assembly, and described valve floats
(the first back-moving spring is provided between core assembly and described housing, it is auxiliary including floating core main part and floating core that described valve floats core assembly
Assistant piece, the installation groove to lower recess is provided with the upper surface of described floating core main part, and described floating core auxiliary member is arranged on
In described installation groove and described floating core auxiliary member fluctuates in described installation groove, described floating core auxiliary member
Limit assembly is provided between described floating core main part, passage and main channel are respectively arranged with the top of described housing,
The sealing thin rubber sheet with described passage mutual cooperation is provided with described floating core main part, on described floating core auxiliary member
It is provided with the rubber seal with the mutual cooperation of described main channel.
Second back-moving spring, described limit assembly are provided between described installation groove and described floating core auxiliary member
Including spacing upper arm and spacing underarm, described spacing upper arm is fixedly installed on the upper end of the medial surface of described installation groove,
Described spacing underarm is arranged on the bottom of described floating core auxiliary member, described spacing upper arm and described spacing underarm phase
To setting, after described passage is opened in described floating core main part tenesmus, the lower surface of described spacing upper arm props up described
The upper surface of spacing underarm described floating core auxiliary member is moved down open described main channel.Installation groove and floating core auxiliary member
Between second back-moving spring is set, it is ensured that rubber seal is quick during vehicle turnover and enduringly seals primary passage, prevents
Fuel oil outwards overflows；The setting of limit assembly plays a part of limiting the floating stroke of floating core auxiliary member, ensures that floating core main part can
Smoothly drive the rubber seal on floating core auxiliary member to open main channel, ensure to be in normally in normal condition, main channel
State.
Fluted, described sealing thin rubber sheet is set to cover described groove on the upper surface of described floating core main part,
Gap, the upper surface of described groove and described floating core main part between described sealing thin rubber sheet and described groove be present
Between be provided with the first interconnected guide groove.There is trickle drop height between groove baseplane and sealing thin rubber sheet,
Enable sealing thin rubber sheet to play trickle parcel function in sealing, be advantageous to the Optimality of sealing.Have in addition certain
Trickle drop also causes both groove baseplane and caulking gum thin slice to be not easy adhesion, easily separated, is advantageous to reopen；Groove
It is provided with the first interconnected guide groove between the upper surface of floating core main part, plays air and fuel oil in discharge groove
Effect, prevent from sealing thin rubber sheet because the air accumulated in groove and the aging of fluid long term are adhered with recess sidewall.
Described sealing thin rubber sheet upper surface outside is provided with more protruding reinforcing ribs, and described protruding reinforcing rib encloses
In the lower end outside of described passage.The too thick influence sealing of traditional sealing thin rubber sheet and bending suppleness, increase are convex
Play intensity, flatness and sealed elastic that reinforcement advantageously ensures that caulking gum thin slice.
One end of described sealing thin rubber sheet is arranged on described floating core main part by fixed mount.
Ventilation through hole is provided with the periphery of described floating core main part.Floating core main part is prevented to be internally formed vacuum.
The mounting post for installing described rubber seal, described mounting post are provided with described floating core auxiliary member
Axial cross section in round table-like, sealing ring of the described rubber seal by horizontally disposed sealing ring and described in being connected to vertically
Connecting portion composition on medial surface, described connecting portion are enclosed in described mounting post, and now described sealing ring is in bowl-shape.Bowl
Shape sealing structure effect is more preferable.
Packing piece is provided with described passage.
The second guide groove of outwardly convex is provided with the periphery of described floating core auxiliary member, is set on described housing
There is the guiding convex tendon that the second guide groove matches.The setting of second guide groove and guiding convex tendon advantageously ensures that floating core auxiliary member edge
It is oriented to convex tendon up and down reciprocatingly to float, without departing from movement locus, ensures that rubber seal accurately seals main channel.
Compared with prior art, the utility model has the advantages that floating core main part and floating core auxiliary member can relative position move,
When floating core auxiliary member floats, the rubber seal on floating core auxiliary member seals the main channel of case top.When floating core auxiliary member
Bottom surface is against in the installation groove of floating core main part, and the sealing thin rubber sheet on floating core main part seals passage.
When vehicle jolts or overturns, valve floats core assembly and is under inclination or horizontal state, and (the first back-moving spring promotes valve
Floating core assembly reach makes the rubber seal on floating core auxiliary member seal the main channel of case top, and makes close on floating core main part
Envelope thin rubber sheet seals passage；It can prevent the fuel oil in fuel tank from outwards overflowing.When vehicle returns to normal condition again
Under, in floating core assembly during inclination or horizontal state transform to vertical state, valve floats core assembly by deadweight compression first
Back-moving spring, and the sealing thin rubber sheet on floating core main part separates with passage, external atmospheric pressure and the inner side air pressure of passage
Reach balance, floating core main part, which relies on self gravitation to drive floating core auxiliary member to move down by limit assembly, makes rubber seal lead to main
Road separates, and avoids not separating with main channel because the absorption affinity of rubber seal is excessive, ensures at normal condition, main channel
In normally state.
Brief description of the drawings
Fig. 1 is structure decomposition figure of the present utility model；
Fig. 2 is the sectional view under passage of the present utility model and main channel closed mode；
Fig. 3 is the sectional view under passage of the present utility model and main channel opening；
Fig. 4 is the structural representation that valve of the present utility model floats core assembly；
Fig. 5 is the structural representation (one) of floating core main part of the present utility model；
Fig. 6 is the enlarged drawing at A in Fig. 5；
Fig. 7 is the installation diagram that core auxiliary member and rubber seal are floated in the utility model；
Fig. 8 is the structural representation (two) of floating core main part of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment：As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of overflow cutting valve, including valve body 1 and bonnet 2, bonnet 2 are pacified
On valve body 1, valve body 1 includes housing 3 and valve floats core assembly 4, and valve is floating to be provided with the first reset between core assembly 4 and housing 3
Spring 5, valve, which floats core assembly 4, includes floating core main part 6 and floating core auxiliary member 7, is provided with the upper surface of floating core main part 6 to lower recess
Installation groove 61, floating core auxiliary member 7 be arranged in installation groove 61 and floating core auxiliary member 7 in installation groove 61 on float downward
It is dynamic, limit assembly is provided between floating core auxiliary member 7 and floating core main part 6, the top of housing 3 is respectively arranged with passage 31 and master
Passage 32, the sealing thin rubber sheet 62 for being provided with core main part 6 and being cooperated with passage 31 is floated, is set on floating core auxiliary member 7
There is the rubber seal 71 to be cooperated with main channel 32.
In this particular embodiment, second back-moving spring 72 is provided between installation groove 61 and floating core auxiliary member 7, it is spacing
Component includes two spacing upper arm 63 and two spacing underarms 73, spacing upper arm 63 are fixedly installed on the madial wall of installation groove 61
Upper end, spacing underarm 73 is arranged on the bottom of floating core auxiliary member 7, and spacing upper arm 63 is oppositely arranged with spacing underarm 73, when
Floating core main part 6 drops open passage 31 after, the upper surface that the lower surface of spacing upper arm 63 props up spacing underarm 73 makes floating core auxiliary
Assistant piece 7, which moves down, opens main channel 32.Second back-moving spring 72 is set between installation groove 61 and floating core auxiliary member 7, it is ensured that
Rubber seal 71 is quick during vehicle turnover and enduringly seals primary passage 32, prevents fuel oil from outwards overflowing；Limit assembly is set
The floating stroke for playing a part of limiting floating core auxiliary member 7 is put, ensures that floating core main part 6 can be smoothly driven on floating core auxiliary member 7
Rubber seal 71 opens main channel 32, ensures to be in normally state in normal condition, main channel 32.
In this particular embodiment, float and fluted 64 are set on the upper surface of core main part 6, sealing thin rubber sheet 62 covers recessed
Groove 64, seal between thin rubber sheet 62 and groove 64 and gap be present, phase is provided between groove 64 and the upper surface of floating core main part 6
The first intercommunicated guide groove 65.There is trickle drop height between the baseplane of groove 64 and sealing thin rubber sheet 62 so that close
Envelope thin rubber sheet 62 can play trickle parcel function in sealing, be advantageous to the Optimality of sealing.Have in addition certain trickle
Drop also causes the baseplane of groove 64 and caulking gum thin slice 62, and both are not easy adhesion, easily separated, are advantageous to reopen；Groove
The first interconnected guide groove 65 is provided between 64 and the upper surface of floating core main part 6, plays the air in discharge groove 64
With the effect of fuel oil, prevent from sealing thin rubber sheet 62 because of the air accumulated in groove 64 and the aging of fluid long term and groove 64
Side wall is adhered.
In this particular embodiment, seal the upper surface outside of thin rubber sheet 62 and be provided with more protruding reinforcing ribs 621, it is convex
Play the lower end outside that reinforcement 621 is trapped among passage 31.The too thick influence sealing of traditional sealing thin rubber sheet 62 and bending are soft
Toughness, increase protruding reinforcing rib 621 advantageously ensure that intensity, flatness and the sealed elastic of sealing thin rubber sheet 62.
In this particular embodiment, the one end for sealing thin rubber sheet 62 is arranged on floating core main part 6 by fixed mount 8.
In this particular embodiment, float and ventilation through hole 66 is provided with the periphery of core main part 6.Prevent in floating core main part 6
Portion forms vacuum.
In this particular embodiment, as shown in fig. 7, being provided with floating core auxiliary member 7 for installing rubber seal 71
Mounting post 74, the axial cross section of mounting post 74 is in round table-like, and rubber seal 71 connects by horizontally disposed sealing ring 711 and vertically
The connecting portion 712 being connected on the medial surface of sealing ring 711 is formed, and connecting portion 712 is enclosed in mounting post 74, and now sealing ring 711 is in
It is bowl-shape.Sealing ring is horizontal before installation, is advantageous to produce；Bowl structure sealing effectiveness is more preferable.
In this particular embodiment, packing piece 9 is provided with passage 31.
In this particular embodiment, as shown in figure 8, being provided with the second of outwardly convex on the periphery of floating core auxiliary member 7
Guide groove 75, the guiding convex tendon 33 to match with the second guide groove 75 is provided with housing 3.Second guide groove 75 and guiding convex tendon
33 setting advantageously ensures that floating core auxiliary member 7 up and down reciprocatingly floats along convex tendon 33 is oriented to, and without departing from movement locus, ensures rubber
Seal 71 accurately seals main channel 32.
Operation principle：When vehicle jolts or overturns, valve floats core assembly 4 and is under inclination or horizontal state, and first resets
Spring 5, which promotes valve to float core assembly 4 and move forward, makes the rubber seal 71 on floating core auxiliary member 7 seal the main channel 32 at the top of housing 3,
And the sealing thin rubber sheet 62 on floating core main part 6 is set to seal passage 31；It can prevent the fuel oil in fuel tank from outwards overflowing.Work as car
Return to again under normal condition, in floating core assembly 4 from tilting or during horizontal state transforms to vertical state, valve floats
Core assembly 4 is by deadweight compression (the first back-moving spring 5, and the sealing thin rubber sheet 62 on floating core main part 6 divides with passage 31
From external atmospheric pressure and the inner side air pressure of passage 31 reach balance, and floating core main part 6 is driven by self gravitation by limit assembly
Floating core auxiliary member 7, which moves down, makes rubber seal 71 be separated with main channel 32, avoid because the absorption affinity of rubber seal 71 is excessive and
It can not be separated with main channel 32, ensure to be in normally state in normal condition, main channel 32.
Claims (9)
1. a kind of overflow cutting valve, including valve body and bonnet, described bonnet is arranged on described valve body, described valve body bag
Include housing and valve floats core assembly, described valve is floating to be provided with (the first back-moving spring between core assembly and described housing, its feature
It is that described valve floats core assembly and includes floating core main part and floating core auxiliary member, is set on the upper surface of described floating core main part oriented
The installation groove of lower recess, described floating core auxiliary member is arranged in described installation groove and described floating core auxiliary member is in institute
Fluctuated in the installation groove stated, be provided with limit assembly between described floating core auxiliary member and described floating core main part, institute
Passage and main channel are respectively arranged with the top of the housing stated, is provided with described floating core main part and described passage phase
The sealing thin rubber sheet mutually coordinated, the rubber seal with the mutual cooperation of described main channel is provided with described floating core auxiliary member
Part.
2. a kind of overflow cutting valve according to claim 1, it is characterised in that described installation groove and described floating core
Second back-moving spring is provided between auxiliary member, described limit assembly includes spacing upper arm and spacing underarm, and described is spacing
Upper arm is fixedly installed on the upper end of the madial wall of described installation groove, and described spacing underarm is arranged on described floating core auxiliary
The bottom of part, described spacing upper arm are oppositely arranged with described spacing underarm, when institute is opened in described floating core main part tenesmus
After the passage stated, the upper surface that the lower surface of described spacing upper arm props up described spacing underarm aids in described floating core
Part, which moves down, opens described main channel.
3. a kind of overflow cutting valve according to claim 1, it is characterised in that set on the upper surface of described floating core main part
Groove is equipped with, described sealing thin rubber sheet covers described groove, between described sealing thin rubber sheet and described groove
Gap be present, the first interconnected guide groove is provided between described groove and the upper surface of described floating core main part.
A kind of 4. overflow cutting valve according to claim 1 or 3, it is characterised in that described sealing thin rubber sheet upper surface
Outside is provided with more protruding reinforcing ribs, and described protruding reinforcing rib is trapped among the lower end outside of described passage.
5. a kind of overflow cutting valve according to claim 4, it is characterised in that one end of described sealing thin rubber sheet leads to
Fixed mount is crossed on described floating core main part.
6. a kind of overflow cutting valve according to claim 1, it is characterised in that set on the periphery of described floating core main part
It is equipped with ventilation through hole.
7. a kind of overflow cutting valve according to claim 1, it is characterised in that be provided with use on described floating core auxiliary member
In the mounting post of the described rubber seal of installation, the axial cross section of described mounting post is in round table-like, described rubber seal
Part is made up of horizontally disposed sealing ring and the connecting portion being connected to vertically on described sealing ring medial surface, described connecting portion
It is enclosed in described mounting post, now described sealing ring is in bowl-shape.
8. a kind of overflow cutting valve according to claim 1, it is characterised in that be provided with packing piece on described passage.
9. a kind of overflow cutting valve according to claim 1, it is characterised in that on the periphery of described floating core auxiliary member
The second guide groove of outwardly convex is provided with, it is convex that the guiding to match with the second described guide groove is provided with described housing
Muscle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720760735.3U CN206918353U (en) | 2017-06-27 | 2017-06-27 | A kind of overflow cutting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720760735.3U CN206918353U (en) | 2017-06-27 | 2017-06-27 | A kind of overflow cutting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206918353U true CN206918353U (en) | 2018-01-23 |
Family
ID=61323316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720760735.3U Expired - Fee Related CN206918353U (en) | 2017-06-27 | 2017-06-27 | A kind of overflow cutting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206918353U (en) |
-
2017
- 2017-06-27 CN CN201720760735.3U patent/CN206918353U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 Termination date: 20200627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |