CN106812984A - One kind ventilation stop valve - Google Patents
One kind ventilation stop valve Download PDFInfo
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- CN106812984A CN106812984A CN201710098552.4A CN201710098552A CN106812984A CN 106812984 A CN106812984 A CN 106812984A CN 201710098552 A CN201710098552 A CN 201710098552A CN 106812984 A CN106812984 A CN 106812984A
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- China
- Prior art keywords
- pressurize
- housing
- stop valve
- valve
- dividing wall
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
A kind of ventilation stop valve is provided, including valve body (1) and bonnet (2), valve body (1) is including being internally provided with the housing of dividing wall (4) (8) with breather valve (5), the stop valve (6) below dividing wall (4) above dividing wall (4), breather valve (5) includes pressurize seat (30), pressurize lid (31), umbrella shape rubber parts (32) and pressurize spring (33), dividing wall (4) sets upper convex ring (18) above, and small gap (19) is opened up on upper convex ring (18)；Breather valve includes independent one-way exhaust valve and independent one-way gas-compensating valve, improves the job stability and controllability of breather valve, and the pressure maintaining performance of pressure-keeping mechanism is more preferable.
Description
Technical field
The present invention relates to one kind ventilation stop valve, this ventilation stop valve be often installed in when using on automotive oil tank or
It is connected with fuel tank, its import is communicated with fuel tank, the waste gas recovering device of canister etc is led in its outlet, under normal circumstances
The respiratory function inside and outside fuel tank is realized, the air pressure balance of fuel tank inner chamber and ambient atmosphere is kept；Oil is cut off in abnormal cases
Roadlock stops fuel oil and leaks.
Background technology
Ventilation stop valve is usually mounted with oil tank of vehicle, this ventilation stop valve is often installed in automobile oil when using
On case, valve body stretches into fuel tank, and valve body lower section or periphery are located at the import of valve, or valve is connected with automotive oil tank；The outlet position of valve
In bonnet portion, the waste gas recovering device of canister etc is led in the outlet of valve.When vehicle is used, this ventilation stop valve have with
Lower effect：The respiratory function inside and outside fuel tank is realized under normal circumstances, keeps the air pressure balance of fuel tank inner chamber and ambient atmosphere；Example
Such as, passage is formed with extraneous by stop valve of ventilating when oil tank of vehicle refuels, the air in fuel tank is discharged along the passage, make oil
Air in case keeps internal and external pressure balance with external atmosphere pressure so that fuel oil swimmingly injects；Vehicle travel process is with combustion
The consumption of oil, by the ventilation stop valve to synchronous tonifying Qi in fuel tank；Fuel tank heavy curtain is moved when vehicle is travelled, and causes air pressure wink in fuel tank
When rise or fall, by the ventilation stop valve in fuel tank synchronously exhaust or tonifying Qi；When air pressure rises sharply in fuel tank, the sun is such as received
It is exposed to the sun, or rapid drawdown, such as there's a sudden fall in temperature, by the ventilation stop valve to synchronously exhaust or tonifying Qi in fuel tank.Hinder in abnormal cases
Only fuel oil leaks, and this function is even more important；Abnormal conditions are primarily referred to as the position suddenly change of fuel tank, when such as vehicle side overturns,
Ventilation stop valve can automatically cut off, to prevent fuel oil from flowing out；In addition, when fuel tank refuels and reaches setting position, or vehicle is serious
Incline or acutely heavy curtain is moved, ventilation stop valve is automatically switched off, prevent fuel oil from being overflowed from the passage.So, this ventilation stop valve
Basic function is exactly under normal circumstances, to realize the respiratory function inside and outside fuel tank, and in abnormal cases, realizes that oil circuit cuts off
Function.This ventilation stop valve is also referred to as overflow cutting valve, balanced valve, turn-over stop valve, roll-over valve etc..
The such ventilation stop valve having been known, such as Application No. 200610144421.7,200780013501.1,
201210229757.9th, in 201310436953.8,201310438429.4 Chinese patent open source literature, this is respectively described
Plant the example of valve.To realize the function of above-described this valve, the design of the ventilation stop valve described by these examples from its
Functionally include a stop valve for being used to cut off oil circuit and a breather valve for realizing the inside and outside ventilation of fuel tank, on concrete structure
Include valve body and bonnet, bonnet is provided with outlet；Valve body includes housing, and bonnet is covered in the top of housing, enclosure interior it is near
Upper end position is provided with dividing wall, and the dividing wall lower section in housing is provided with a floating core that can be moved up and down along inner walls,
Sealing mechanism is set with dividing wall above floating core, so as to form stop valve, moves up and down to realize opening for stop valve by floating core
Logical and closing, under normal circumstances, floating core is below position, and when there are abnormal conditions, floating core is moved up and makes sealing mechanism
Sealing is realized, stop valve is closed.Breather valve is also referred to as pressure-keeping mechanism, is arranged on the dividing wall top of enclosure interior, forms gas
Passage.But the setting of the exhaust passage of the ventilation stop valve described by these examples, to the row under different barometric informations in fuel tank
The adaptability of gas or tonifying Qi demand is also inadequate, and such as the fuel consumption of vehicle motor increases（For example in acceleration or climbing）,
Temperature change and cause fuel tank to shrink at low temperature, or pressure change etc. at Different Altitude may all make fuel oil
Occurs negative pressure in case.The relation of the factors such as the valve arrangement of prior art, inside and outside draft speed is fairly slow, there is certain limitation.
The action stability of breather valve is also inadequate, especially, described by these examples ventilation stop valve stop valve close
When action stability it is also inadequate, be susceptible to be offset from each other between seal, cause a small amount of fuel leakage；It will be appreciated that car
Needs are used under the conditions of different geographical environments, seasonal climate, and the air pressure change situation gap in its fuel tank is huge, even if together
Under the conditions of one geographical environment, seasonal climate, air pressure when using in its fuel tank can also be varied widely；Described by these examples
The ventilation sealing mechanism of stop valve and the organization plan of pressure-keeping mechanism need further rationalization and improve, further to carry
Rise the reliability of its sealing mechanism and pressure-keeping mechanism so that the sealing property of sealing mechanism is with the pressure maintaining performance of pressure-keeping mechanism more
It is good.
The present invention is precisely in order to solve above-mentioned technical problem.
The content of the invention
The technical problems to be solved by the invention are directed to the above-mentioned state of the art, there is provided a kind of to be fitted with the distribution of multiple air flues
Answer and allowed under different barometric informations in fuel tank fuel tank to be ventilated with inside and outside at a relatively high flow velocity, solve the consumption high of fuel（Such as car
Accelerate or climb when）Or temperature drop and pressure change（Such as the change of height above sea level）The high negative pressure of period, and sealing property and guarantor
The pressure maintaining performance of press mechanism is preferably ventilated stop valve.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：
One kind ventilation stop valve, including valve body (1) and bonnet (2), bonnet (2) are provided with external-connected port (3) as fluid passage
Mouthful, valve body (1) positioned at the lower section of bonnet (2), including being internally provided with the housing (8) of dividing wall (4) isolate with being located at by valve body (1)
Breather valve (5) above wall (4), the stop valve (6) below dividing wall (4), the dividing wall (4) open up fluid passage holes
(7), the bonnet (2) is covered in the top of housing (8) and is fixedly connected with bonnet (2), and housing (8) lower end also sets up shell
Body bottom plate (10), housing bottom plate (10) and/or housing (8) periphery are provided with fluid intake (11), and through the isolation of housing (8)
Wall (4) to the fluid issuing (3) of bonnet (2) forms fluid passage, it is characterised in that described logical above dividing wall (4)
Air valve (5) includes pressurize seat (30), pressurize lid (31), umbrella shape rubber parts (32) and pressurize spring (33), and pressurize seat (30) is shelved
In dividing wall (4) above, pressurize seat (30) is in the form of annular discs, and pressurize lid (31) is cylindrical, and pressurize lid (31) cover is covered in pressurize seat
(30) above, pressurize seat (30) forms sealing and coordinates with the face that contacts with each other of dividing wall (4) upper convex ring (18), and pressurize seat (30)
Inwall with the housing (8) of its position leaves space；The bottom of pressurize seat (30) is provided with passage (34), umbrella shape rubber parts
(32) in inversion state, in the centre bore in the umbrella stem portion (35) insertion pressurize lid (31) of umbrella shape rubber parts (32), umbrella shape rubber parts
(32) cavity (37) place of umbrella cover portion (36) between pressurize seat (30) and pressurize lid (31), pressurize lid (31) is including caping
(38) with side wall (39), caping (38) is set between multiple breeder tubes (40) and pressurize seat (30) and pressurize lid (31)
Cavity (37) is communicated, and multiple breeder tubes (40) are in the umbrella cover portion (36) of umbrella shape rubber parts (32) set by caping (38)
In the range of gluing, sealing；Housing (8) upper end set housing upper head plate (41), pressurize spring (33) positioned at housing (8) upper head plate with
Between pressurize seat (30), and the bottom of pressurize spring (33) is sleeved on pressurize lid (31) outside；The dividing wall (4) is set above
Along the upper convex ring (18) that the fluid passage holes (7) periphery is protruding upward, offered for ventilating in a small amount on the upper convex ring (18)
Small gap (19).
Pressurize seat (30) including base plate (42) in the form of annular discs be arranged on the base plate (42) circle bulge loop above
(43), the pressurize lid (31) be covered in pressurize seat (30) base plate (42) above and be sleeved on pressurize seat (30) bulge loop (43)
Outside, cavity (37) place of the umbrella cover portion (36) of the umbrella shape rubber parts (32) above the bulge loop (43) of pressurize seat (30).
The center of the bottom of pressurize seat (30) is provided with passage (34), and the pressurize lid (31) sets 6 and leads to above
Gas aperture (40), it is uniform along pressurize lid (31) circumferencial direction.
The outer wall of the housing (8) is symmetrical arranged 2 buckle ears (44), and accordingly, the bonnet (2) is symmetrical arranged for inserting
Enter extend downwardly 2 insertions piece (45) of housing (8) buckle ear (44)；Housing (8) outside also sets up valve outer shield (46),
Also the aperture (47) buckled into for housing (8) buckle ear (44) is opened up on valve outer shield (46) wall.
Annular groove (48), embedded O-ring seals (49) are opened up at the outer wall that the top of the housing (8) is connected with bonnet (2)；
The vertical convex tendon (50) that the inwall of the housing (8) is moved up and down at least provided with 2 floating cores (9) of guiding, the corresponding floating core
(9) outside is at least provided with 2 vertical grooves for matching therewith (51)；The floating core (9) in lower ending opening cylindrical shape, center
A piece pole stretched downwards from upper wall (52) is set, and pole (52) floats core including extending to the outer section of the cylinder outside floating core (9) cylinder
(9) barrel at least opens up 2 through holes (53) through its wall thickness；Cylindrical shape of the housing bottom plate (10) in nozzle upward, its
Barrel is embedded in housing (8) lower end inner wall, and cylinder bottom sets downwardly projecting protuberance (54), and the protuberance (54) is opened up and supplies pole
(52) patchhole (55) of the outer section insertion of cylinder, its bottom opens up multiple clearance opening (56) conduct at the periphery of the protuberance (54)
Fluid passage mouthful；Housing upper head plate (41) also opens up multiple clearance opening (56) as fluid passage mouthful.
Dividing wall (4) lower section in the housing (8) is provided with a floating core that can be moved up and down along housing (8) inwall
(9), float core (9) and sealing mechanism is set between dividing wall (4) above, so that stop valve (6) is formed, by floating core (9) up and down
It is mobile come realize stop valve (6) open with closing, under normal circumstances, floating core (9) is below position, when there are abnormal conditions
When, floating core (9) is moved up makes sealing mechanism realize sealing, and stop valve (6) is closed；The floating core (9) and housing bottom plate
(10) big spring (12) of compression is set between, the sealing mechanism include being arranged on floating core (9) seal receptacle (13) above with
Rubber gasket (14), the floating core (9) sets circular arc boss (15) above, and the seal receptacle (13) opens up convex for circular arc below
The corresponding circular arc pit (16) of platform (15) insertion so that seal receptacle (13) can realize that with the circular arc boss (15) be fulcrum edge
The circumference any direction of circular arc pit (16) is flexibly waved, and the rubber gasket (14) is by clip (27) installed in sealing
On seat (13), the seal receptacle (13) sets and is suitable to rubber gasket (14) and shelves face with the projection that laminating type is shelved above
(25), the sealing mechanism also includes being arranged on dividing wall (4) below, downwardly projecting along the fluid passage holes (7) periphery
It is suitable to the lower flange collar (17) of the rubber gasket (14) palette.
The floating core (9) both sides above are symmetrical arranged two hooks (20) for tangling the seal receptacle (13), in
Between set in the circular arc boss (15) of cone shape, the top of circular arc boss (15) is circular arc spur (21), positioned at circular arc boss
(15) the 3rd other side sets convex bittiness (22)；Accordingly, the both sides of the seal receptacle (13) symmetrically open up two hooks
Breach (23), opens up the circular arc pit (16) for circular arc boss (15) insertion below, and the 3rd side of seal receptacle (13) is opened up for fixed
The locating notch (24) of position protruding block (22) insertion.
It is slope that the projection of the seal receptacle (13) shelves face (25), and the lower flange collar (17) of the dividing wall (4) is also
Corresponding slope.
The projection of the seal receptacle (13) shelves multiple small convex ribs (26) that face (25) is arranged to add to surface roughness,
The multiple small convex rib (26) is arranged in order along the slope that projection shelves face (25).
The clip (27) is made by elastomeric material, and in gate-shaped, the bottom of its both sides sets raised button (28)；Accordingly
, the both sides of the seal receptacle (13) set the button hole (29) buckled into for the raised button (28) of clip (27).
Present invention ventilation stop valve wins the chief of prior art kinds of schemes, compared with the prior art scheme, usually fuel tank
When inside and outside draught head is less than setting value, ventilated using fixed small gap hole, when the draught head inside and outside fuel tank is more than setting value,
Breather valve quick air is then turned on, so more can meticulously adapt to the exhaust demand in fuel tank under different barometric informations, pressure-maintaining machine
The pressure maintaining performance of structure is more preferable；Breather valve includes independent one-way exhaust valve and independent one-way gas-compensating valve to pressure-keeping mechanism in other words,
Traditional low discharge outlet and air inlet are overcome with the poor defect of the job stability existing for one passage of pressure retaining valve, is protected
The outlet of pressure valve and air inlet each have independent passage, improve the job stability and controllability of breather valve；Due to this hair
The seal receptacle of bright stop valve can be realized flexibly being waved along the circumference any direction of circular arc pit by fulcrum of the circular arc boss, make
Palette is realized in the lower flange collar position that the rubber gasket of the sealing mechanism that must be arranged on above floating core can more find dividing wall accurately,
Sealing property and action stability are improved, so as to can realize that oil circuit cuts off in abnormal cases more accurate stable.In addition, by
In the present invention ventilation stop valve stop valve using unilateral fixation rubber gasket as seal, can when valve element is opened list
Side first and at the sealing of seat is pulled open, and because pressure difference does the suction for causing when which reducing opening, easily reopens.
Brief description of the drawings
Fig. 1 is present invention ventilation stop valve schematic perspective view；
Fig. 2 is present invention ventilation stop valve entirety generalized section；
Fig. 3 is the bonnet generalized section of present invention ventilation stop valve；
Fig. 4 is present invention ventilation cut-out valve housing schematic perspective view；
Fig. 5 is that the bonnet of present invention ventilation stop valve looks up direction schematic perspective view；
Fig. 6 is the floating core assembly schematic perspective view of present invention ventilation stop valve；
Fig. 7 looks up direction schematic perspective view for seal receptacle；
Fig. 8 is big spring schematic perspective view；
Fig. 9 is floating core schematic perspective view；
Figure 10 is housing overlook direction schematic perspective view；
Figure 11 is Local C enlarged diagram in Figure 10；
Figure 12 looks up direction schematic perspective view for housing；
Figure 13 is the component parts schematic perspective view of sealing mechanism；
Figure 14 is valve outer shield schematic perspective view；
Figure 15 is housing bottom plate schematic perspective view；
Figure 16 is pressure-keeping mechanism and its associated part schematic perspective view；
Figure 17 is pressure-keeping mechanism generalized section；
Figure 18 is pressure-keeping mechanism component parts schematic perspective view；
Floating core assembly faces directional profile schematic diagram when Figure 19 is seal receptacle normotopia state；
Floating core assembly side-looking direction generalized section when Figure 20 is seal receptacle normotopia state；
Floating core assembly faces directional profile schematic diagram when Figure 21 is seal receptacle swinging condition；
Floating core assembly side-looking direction generalized section when Figure 22 is seal receptacle swinging condition；
Figure 23 is that the present invention shows when ventilating stop valve seal receptacle not by jack-up by the outside exhaust condition of small gap on upper convex ring
It is intended to；
Figure 24 is outside exhaust condition schematic diagram when present invention ventilation stop valve seal receptacle is by jack-up；
Figure 25 is inside tonifying Qi view when present invention ventilation stop valve umbrella shape rubber parts is rushed to open；
Figure 26 is present invention closed mode schematic diagram of the ventilation stop valve in vehicle rollover and reopens process rubber seal
The variable condition schematic diagram of piece.
Specific embodiment
Below describing specific embodiment of the invention shown in Fig. 1 to Figure 26 in detail.
One kind ventilation stop valve, as shown in figure 1, including valve body 1 and bonnet 2, bonnet 2 is provided with external-connected port 3 as fluid
Passway, valve body 1 is located at the lower section of bonnet 2.
As shown in Fig. 2 valve body 1 includes housing 8, breather valve 5, the stop valve 6 being arranged inside housing 8, set inside housing 8
Dividing wall 4 is equipped with, the top of dividing wall 4 of housing 8 sets breather valve 5, and the lower section of dividing wall 4 sets stop valve 6, and dividing wall 4 is opened up
Fluid passage holes 7, it is then apparent referring to Figure 10, Figure 11, Figure 12.Bonnet 2 is covered in the top of housing 8 and is fixed with bonnet 2
Connection, the lower section of dividing wall 4 in housing 8 is provided with a floating core 9 that can be moved up and down along the inwall of housing 8, float core 9 above with every
Sealing mechanism is set between wall 4, so as to form stop valve 6；Stop valve 6 moves up and down to realize stop valve 6 by floating core 9
Open and closing.Under normal circumstances, float core 9 and be in lower position as shown in Figure 2, when there are abnormal conditions, float core 9 upward
Movement makes sealing mechanism realize sealing, and stop valve 6 is closed.The lower end of housing 8 also sets up housing bottom plate 10, the He of housing bottom plate 10
The periphery of housing 8 is provided with fluid intake 11, and dividing wall 4 to the fluid issuing 3 of bonnet 2 through housing 8 forms fluid passage, floats core
The big spring 12 of compression is set between 9 and housing bottom plate 10, and single big spring 12 is as shown in Figure 8.
As shown in fig. 6, sealing mechanism includes being arranged on the seal receptacle 13 and rubber gasket 14 above floating core 9；Such as Fig. 9 institutes
Show, float core 9 and circular arc boss 15 is set above, as shown in fig. 7, seal receptacle 13 is opened up for the corresponding of the insertion of circular arc boss 15 below
Circular arc pit 16 so that seal receptacle 13 can realize that with the circular arc boss 15 be circumference any direction of the fulcrum along circular arc pit 16
Flexibly wave, floating core assembly faces directional profile schematic diagram when Figure 19 is seal receptacle normotopia state, Figure 20 is seal receptacle normotopia shape
Core assembly side-looking direction generalized section is floated during state, floating core assembly faces directional profile signal when Figure 21 is seal receptacle swinging condition
Figure, floating core assembly side-looking direction generalized section when Figure 22 is seal receptacle swinging condition.As shown in Fig. 6 or Figure 13, rubber seal
Piece 14 is arranged on seal receptacle 13 by clip 27, and the seal receptacle 13 sets be suitable to rubber gasket 14 with laminating type above
The projection shelved shelves face 25；The component parts of the above sealing mechanism being arranged on above floating core 9 together form with floating core 9
Floating core assembly；Under normal circumstances, as shown in Figure 23, Figure 24, Figure 25, float core assembly own wt and support its big spring 12
Elastic force reaches dynamic balance so that stop valve 6 is in opening.As shown in Figure 10, Figure 11, Figure 12, sealing mechanism also includes setting
Put below dividing wall 4, along the downwardly projecting lower flange collar for being suitable to the palette of rubber gasket 14 in the periphery of fluid passage holes 7
17；Dividing wall 4 above set along the periphery of fluid passage holes 7 upper convex ring 18 protruding upward, offered on the upper convex ring 18 for
The small gap 19 ventilated in a small amount.
As shown in Fig. 6 or Fig. 9, the both sides above floating core 9 are symmetrical arranged two hooks for tangling the seal receptacle 13
20, middle setting is in the circular arc boss 15 of cone shape, and the top of circular arc boss 15 is circular arc spur 21, positioned at circular arc boss 15
The 3rd other side sets convex bittiness 22；Accordingly, as shown in Fig. 6 or Figure 13, the both sides of seal receptacle 13 symmetrically open up two
Hook breach 23, opens up the circular arc pit 16 for the insertion of circular arc boss 15 below, and the 3rd side of seal receptacle 13 opens up and supplies convex
The locating notch 24 of bittiness 22 insertion.The projection of seal receptacle 13 is shelved face 25 and is adapted to use slope, the lower flange collar 17 of dividing wall 4
Also it is corresponding slope.The projection of seal receptacle 13 shelves the settable multiple small convex rib 26 in face 25, and multiple small convex ribs 26 are along projection
The slope for shelving face 25 is arranged in order, to increase surface roughness.Clip 27 is made by elastomeric material, and in gate-shaped, it two
The bottom of side sets raised button 28, can specifically use excellent spring plastic injection piece；Accordingly, the both sides of seal receptacle 13 are set
For the button hole 29 that the raised button 28 of clip 27 is buckled into.Floating core 9, seal receptacle 13 can use plastic injection piece.Rubber gasket 14
Made using rubber, can be purchased to relevant manufacturers at home.
As shown in Fig. 2 breather valve 5 is located at the top of dividing wall 4, the main component parts of breather valve 5 as shown in figure 16, including is protected
Wedge 30, pressurize lid 31, umbrella shape rubber parts 32 and pressurize spring 33；As shown in figure 17, pressurize seat 30 is in the form of annular discs, pressurize seat 30
Shelve and be fitted in above the upper convex ring 18 of dividing wall 4, pressurize seat 30 forms close with the upper convex ring 18 of dividing wall 4 face that contacts with each other
Envelope coordinates, and pressurize seat 30 leaves space with the inwall of the housing 8 of its position；Pressurize lid 31 is cylindrical, pressurize lid 31
Cover is covered on pressurize seat 30, and the bottom of pressurize seat 30 is provided with passage 34, and umbrella shape rubber parts 32 is in inversion state, umbrella shape rubber
In the centre bore of the insertion pressurize of umbrella stem portion 35 lid 31 of part 32, the umbrella cover portion 36 of umbrella shape rubber parts 32 is located at pressurize seat 30 and pressurize
At cavity 37 between lid 31, pressurize lid 31 includes caping 38 and side wall 39, and caping 38 sets multiple breeder tubes 40 and pressurize
Cavity 37 between seat 30 and pressurize lid 31 is communicated, and multiple breeder tubes 40 are in umbrella shape rubber parts 32 set by caping 38
In the range of the gluing, sealing in umbrella cover portion 36；The upper end of housing 8 sets housing upper head plate 41, and pressurize spring 33 is located at the upper head plate of housing 8
Between pressurize seat 30, and the bottom of pressurize spring 33 is sleeved on the outside of pressurize lid 31.Pressurize seat 30 includes bottom in the form of annular discs
Plate 42 and the circle bulge loop 43 being arranged on above the base plate 42, pressurize lid 31 are covered in above the base plate 42 of pressurize seat 30 and are set with
In the outside of bulge loop 43 of pressurize seat 30, the umbrella cover portion 36 of umbrella shape rubber parts 32 is located at the cavity 37 of the top of bulge loop 43 of pressurize seat 30
Place.During specific implementation, can be in the centrally disposed passage 34 of the bottom of pressurize seat 30, it is small that pressurize lid 31 sets 6 ventilations above
Hole 40, it is uniform along the circumferencial direction of pressurize lid 31.Pressurize seat 30, pressurize lid 31 can be divided using the plastic injection piece of same material
Do not shape, during assembling after umbrella shape rubber parts 32 is loaded, welded the two using ultrasonic welding process.Umbrella shape rubber parts
32 are made using rubber, can be ordered to relevant manufacturers at home.Pressurize seat 30, pressurize lid 31, umbrella shape rubber parts 32 and pressurize bullet
Spring 33 collectively forms the component parts of pressure-keeping mechanism.Wherein, one-way exhaust is formed between pressurize seat 30 and the upper convex ring 18 of dividing wall 4
Valve；One-way gas-compensating valve is formed between umbrella shape rubber parts 32 and 6 breeder tubes 40 of pressurize lid 31.
As shown in figure 4, the outer wall of housing 8 is set is symmetrical arranged 2 buckle ears 44, and accordingly, as shown in Fig. 3 or Fig. 5, bonnet
2 are symmetrical arranged extend downwardly 2 insertion pieces 45 for inserting the buckle ear 44 of housing 8；The outside of housing 8 also sets up valve outer shield
46, as shown in figure 14, the aperture 47 buckled into for the buckle ear 44 of housing 8 is also opened up on the wall of valve outer shield 46.
As shown in figure 4, annular groove 48 is opened up at the outer wall that is connected with bonnet 2 of the top of housing 8, embedded O-ring seals 49；Such as
Shown in Figure 12, the inwall of housing 8 floats the vertical convex tendon 50 that cores 9 are moved up and down at least provided with 2 guidings, as shown in figure 9, accordingly
The floating outside of core 9 is at least provided with 2 vertical grooves 51 for matching therewith；As shown in Fig. 2, Fig. 6, Fig. 9, core 9 is floated in lower ending opening
Cylindrical shape, center sets a pole 52 stretched downwards from upper wall, and pole 52 includes cylinder inner segment and extends to the cylinder of floating core 9
The outer section of outer cylinder, can be uniformly arranged a plurality of vertical convex tendon in the cylinder inner segment of pole 52 along its surrounding wall, float the barrel of core 9 at least
Open up 2 through holes 53 through its wall thickness.As shown in Fig. 2, Figure 15, housing bottom plate 10 is in nozzle cylindrical shape upward, its cylinder
Wall is embedded in the lower end inner wall of housing 8, and cylinder bottom sets downwardly projecting protuberance 54, and the protuberance 54 is opened up to be inserted for 52 outer sections of pole
The patchhole 55 for entering, its bottom opens up multiple clearance opening 56 as fluid passage mouthful at the periphery of the protuberance 54；Such as Figure 16
Shown, housing upper head plate 41 also opens up multiple clearance opening 56 as fluid passage mouthful.
In present invention ventilation stop valve, rubber gasket 14, umbrella shape rubber parts 32 and O-ring seals 49 use rubber system
Make, big spring 12, pressurize spring 33 use metal spring, and other can use plastic injection piece.
The present invention is installed on automotive oil tank when ventilation stop valve is used, and valve body stretches into fuel tank；Positioned at the external of bonnet 2
Port 3 leads to the waste gas recovering device of canister etc.The present invention ventilation stop valve basic function be exactly, under normal circumstances,
The respiratory function inside and outside fuel tank is realized, the air pressure balance of fuel tank inner chamber and ambient atmosphere is kept；And in abnormal cases, realize
Oil circuit cutting function.
Vehicle in the condition of normal use, floating core assembly own wt and it big of support of present invention ventilation stop valve
The elastic force of spring 12 reaches dynamic balance so that stop valve 6 is in opening all the time.The such situation of detailed description below it is several
Specific situation.
When draught head inside and outside fuel tank is less than setting value, the pressurize seat 30, pressurize lid 31 of breather valve 5, umbrella shape rubber parts 32
And pressurize spring 33, under the elastic force effect of its own weight and pressurize spring 33, pressurize seat 30 is shelved and is fitted in dividing wall 4
Above, breather valve 5 is closed, i.e., one-way exhaust valve is in closed mode with one-way gas-compensating valve, as shown in Figure 2.Gas
Pressure difference refers to the difference of the air pressure of general headquarters and external atmosphere pressure in fuel tank.It is divided into following two kinds of situations：
Situation 1：Fuel tank internal pressure is more than external atmosphere pressure, and when draught head is less than setting value, the breather valve 5 of stop valve of ventilating outwards is arranged
Gas.For example, oil tank of vehicle makes the air in fuel tank be discharged along the passage when refueling so that air and external atmosphere pressure in fuel tank
Keep internal and external pressure balance so that fuel oil swimmingly injects.Set by air from housing bottom plate 10 and the periphery of housing 8 in fuel tank
Fluid intake 11 enter housing 8 in；Behind submergence housing bottom plate 10 in fuel tank, still can be from the stream set by the periphery of housing 8
Body entrance 11 enters in housing 8；As shown in figure 23, now air is opened from the upper convex ring 18 of dividing wall 4 in ventilation stop valve
If the upper space of dividing wall 4 that enters in housing 8 of small gap 19, then discharged through the external-connected port 3 of bonnet 2.
Situation 2：Fuel tank internal pressure be less than external atmosphere pressure, draught head be less than setting value when, ventilate stop valve breather valve 5 to
Interior tonifying Qi.For example, consumption of the vehicle travel process with fuel oil, by the ventilation stop valve to synchronously being inflated in fuel tank so that
Air in fuel tank keeps internal and external pressure balance with external atmosphere pressure；Now, outside air enters from the external-connected port 3 of bonnet 2
The top of dividing wall 4 in housing 8, the dividing wall that the small gap 19 opened up from the upper convex ring 18 of dividing wall 4 enters in housing 8
4 lower space and fuel tank.Trend of the air in ventilation stop valve is just opposite with situation as shown in figure 23 1.
When draught head inside and outside fuel tank is more than setting value, it is divided into following two kinds of situations：
Situation 3：Fuel tank internal pressure is more than external atmosphere pressure, and when draught head is more than setting value, the breather valve 5 of stop valve of ventilating outwards is arranged
Gas.For example, fuel tank heavy curtain is moved when vehicle is travelled, air pressure in fuel tank is caused instantaneously to rise, it is outwardly synchronous by the ventilation stop valve
Exhaust；For another, when air pressure persistently rises sharply in fuel tank, such as it is exposed to the sun by the sun, outwardly synchronously it is vented by the ventilation stop valve.Such as
Shown in Figure 24, because tank pressure is more than setting value more than the draught head of external atmosphere pressure, only relies on small gap 19 and be vented
Through having little time, at this moment the air of larger pressure has been enough to overcome floating core assembly own wt and has supported its big spring 12 in valve
Elastic force, upward jack-up pressurize seat 30, i.e. one-way exhaust valve are opened so that the air of larger pressure is from pressurize seat 30 and its institute in valve
The upper space of the dividing wall 4 that the space between the inwall of the housing 8 of position enters in housing 8, then through the external connection end of bonnet 2
Mouth 3 is discharged.One-way gas-compensating valve is closed under this situation.
Situation 4：Fuel tank internal pressure be less than external atmosphere pressure, draught head be more than setting value when, ventilate stop valve breather valve 5 to
Interior tonifying Qi.For example, when instantaneously accelerating or climb when vehicle is travelled, causing air pressure in fuel tank instantaneously to decline, cut off by the ventilation
Valve is to simultaneously and rapidly tonifying Qi in fuel tank；For another, when air pressure rapid drawdown in fuel tank, such as the change of height above sea level, there's a sudden fall in temperature, by the ventilation
Stop valve is to simultaneously and rapidly tonifying Qi in fuel tank.As shown in figure 25, similarly, since tank pressure is less than the air pressure of external atmosphere pressure
Difference is more than setting value, only relies on the tonifying Qi of small gap 19 and has had little time, because pressurize seat 30 is shelved and is fitted in above dividing wall 4
Formed sealing, from external-connected port 3 enter housing 8 in dividing wall 4 upper space outside air by caping 38 ventilation
The umbrella cover portion 36 of the impact umbrella shape of aperture 40 rubber parts 32, because umbrella shape rubber parts 32 is elastomeric material, the umbrella of umbrella shape rubber parts 32
The surrounding of face 36 deforms downwards, i.e., one-way gas-compensating valve is opened, and outside air is entered pressurize seat 30 and protected with a relatively high flow velocity
At cavity 37 between gland 31, then through under the dividing wall 4 in the entrance housing 8 of passage 34 of the bottom centre of pressurize seat 30
Portion space and fuel tank, so as to by occur fuel tank damage and thing followed environmental problem it is dangerous near minimum.This situation
Lower one-way exhaust valve is closed.
The above is vehicle in situation about normally using, the floating core assembly own wt and branch of present invention ventilation stop valve
The elastic force for supportting its big spring 12 reaches dynamic balance, and stop valve 6 is in opening all the time.
Fuel oil is prevented to leak in abnormal cases, this function is even more important.Dash forward the position that abnormal conditions are primarily referred to as fuel tank
So change, such as vehicle side upset or automatic in stop valve meeting of when the abrupt slope stage causing fuel level to change, ventilating
Cut-out, to prevent fuel oil from flowing out；In addition, when fuel tank refuels and reaches setting position, or vehicle knockdown or violent heavy curtain are moved, and are led to
Gas stop valve is automatically switched off, and prevents fuel oil from being overflowed from the passage.The action of the such situation valve of detailed description below.
During vehicle side upset as shown in state A in Figure 26, because ventilation stop valve is horizontal with vehicle, core assembly itself weight is floated
Amount can not resist the elastic force of big spring 12, float core assembly under the elastic force effect of big spring 12 along the inwall convex tendon of housing 8
50 move to bonnet direction so that the palette dividing wall 4 of rubber gasket 14 of the sealing mechanism being arranged on above floating core
Lower flange collar 17, realizes that oil circuit cuts off.Or situation during vehicle knockdown is also similar.
When fuel tank refuels reaches setting position, as shown in Fig. 2 at this moment float core 9 being immersed in fuel oil, the bullet of big spring 12
Power is greater than the gravity of floating core assembly plus the buoyancy of floating core 9, and floating core assembly is moved up along the inwall convex tendon 50 of housing 8, made
The lower flange collar 17 of the palette dividing wall 4 of rubber gasket 14 of the sealing mechanism that must be arranged on above floating core, realizes that oil circuit is cut
It is disconnected.The situation of the violent heavy curtain of vehicle dynamic moment is also similar.
Further, since the stop valve of present invention ventilation stop valve uses the rubber gasket 14 of unilateral fixation as sealing
Part, can pull open when valve element is opened at the sealing of unilateral elder generation and seat, because pressure difference does the suction for causing when which reducing opening,
Easily reopen, until opening completely；And the projection of seal receptacle 13 shelves face 25 with the lower flange collar 17 of dividing wall 4 using oblique
The design of domatic gluing, sealing, is easier to reopen relative to the design of plane gluing, sealing, is conducive to after gluing, sealing in fuel
Level declines or ensures when vehicle and its fuel tank return to its normal position reopening for valve；Figure 26 is schematically illustrated
Present invention closed mode of the ventilation stop valve in vehicle rollover and reopen the variable condition of process rubber gasket.
Claims (10)
1. one kind ventilation stop valve, including valve body (1) and bonnet (2), bonnet (2) are provided with external-connected port (3) as fluid passage
Mouthful, valve body (1) positioned at the lower section of bonnet (2), including being internally provided with the housing (8) of dividing wall (4) isolate with being located at by valve body (1)
Breather valve (5) above wall (4), the stop valve (6) below dividing wall (4), the dividing wall (4) open up fluid passage holes
(7), the bonnet (2) is covered in the top of housing (8) and is fixedly connected with bonnet (2), and housing (8) lower end also sets up shell
Body bottom plate (10), housing bottom plate (10) and/or housing (8) periphery are provided with fluid intake (11), and through the isolation of housing (8)
Wall (4) to the fluid issuing (3) of bonnet (2) forms fluid passage, it is characterised in that described logical above dividing wall (4)
Air valve (5) includes pressurize seat (30), pressurize lid (31), umbrella shape rubber parts (32) and pressurize spring (33), and pressurize seat (30) is shelved
In dividing wall (4) above, pressurize seat (30) is in the form of annular discs, and pressurize lid (31) is cylindrical, and pressurize lid (31) cover is covered in pressurize seat
(30) above, pressurize seat (30) forms sealing and coordinates with the face that contacts with each other of dividing wall (4) upper convex ring (18), and pressurize seat (30)
Inwall with the housing (8) of its position leaves space；The bottom of pressurize seat (30) is provided with passage (34), umbrella shape rubber parts
(32) in inversion state, in the centre bore in the umbrella stem portion (35) insertion pressurize lid (31) of umbrella shape rubber parts (32), umbrella shape rubber parts
(32) cavity (37) place of umbrella cover portion (36) between pressurize seat (30) and pressurize lid (31), pressurize lid (31) is including caping
(38) with side wall (39), caping (38) is set between multiple breeder tubes (40) and pressurize seat (30) and pressurize lid (31)
Cavity (37) is communicated, and multiple breeder tubes (40) are in the umbrella cover portion (36) of umbrella shape rubber parts (32) set by caping (38)
In the range of gluing, sealing；Housing (8) upper end set housing upper head plate (41), pressurize spring (33) positioned at housing (8) upper head plate with
Between pressurize seat (30), and the bottom of pressurize spring (33) is sleeved on pressurize lid (31) outside；The dividing wall (4) is set above
Along the upper convex ring (18) that the fluid passage holes (7) periphery is protruding upward, offered for ventilating in a small amount on the upper convex ring (18)
Small gap (19).
2. ventilation stop valve as claimed in claim 1, it is characterised in that pressurize seat (30) includes base plate in the form of annular discs
(42) be arranged on the base plate (42) above one circle bulge loop (43), the pressurize lid (31) be covered in pressurize seat (30) base plate
(42) above and be sleeved on pressurize seat (30) bulge loop (43) outside, the umbrella cover portion (36) of the umbrella shape rubber parts (32) is positioned at guarantor
Cavity (37) place above the bulge loop (43) of wedge (30).
3. ventilation stop valve as claimed in claim 1, it is characterised in that the center of the bottom of pressurize seat (30) is provided with logical
Stomata (34), the pressurize lid (31) sets 6 breeder tubes (40) above, uniform along pressurize lid (31) circumferencial direction.
4. ventilation stop valve as claimed in claim 1, it is characterised in that the outer wall of the housing (8) is symmetrical arranged 2 buckle ears
(44), accordingly, the bonnet (2) is symmetrical arranged extend downwardly 2 insertion pieces for inserting housing (8) buckle ear (44)
(45)；Housing (8) outside also sets up valve outer shield (46), is also opened up on valve outer shield (46) wall for housing (8) buckle ear
(44) aperture (47) for buckling into.
5. ventilation stop valve as claimed in claim 1, it is characterised in that what the top of the housing (8) was connected with bonnet (2)
Annular groove (48), embedded O-ring seals (49) are opened up at outer wall；The inwall of the housing (8) is at least provided with 2 floating cores (9) of guiding
The vertical convex tendon (50) for moving up and down, corresponding floating core (9) outside is at least provided with 2 vertical grooves for matching therewith
(51)；The floating core (9) in lower ending opening cylindrical shape, center set a pole stretched downwards from upper wall (52), circle
Rod (52) at least opens up 2 through the logical of its wall thickness including extending to the outer section of the cylinder outside floating core (9) cylinder, the barrel of floating core (9)
Hole (53)；Cylindrical shape of the housing bottom plate (10) in nozzle upward, its barrel insertion housing (8) lower end inner wall, cylinder bottom set to
The protuberance (54) of lower protrusion, the protuberance (54) opens up the patchhole (55) for the outer section insertion of pole (52) cylinder, and its bottom exists
Multiple clearance opening (56) are opened up at the periphery of the protuberance (54) as fluid passage mouthful；Housing upper head plate (41) also opens up multiple
Clearance opening (56) is used as fluid passage mouthful.
6. the ventilation stop valve as described in any one of claim 1 to 5, it is characterised in that the dividing wall in the housing (8)
(4) lower section is provided with a floating core (9) that can be moved up and down along housing (8) inwall, and floating core (9) is above between dividing wall (4)
Sealing mechanism is set, so as to form stop valve (6)；The big bullet of compression is set between the floating core (9) and housing bottom plate (10)
Spring (12), the sealing mechanism includes being arranged on floating core (9) seal receptacle (13) above and rubber gasket (14), the floating core
(9) circular arc boss (15) is set above, and the seal receptacle (13) opens up the corresponding circular arc for circular arc boss (15) insertion below
Pit (16) so that seal receptacle (13) can be realized with the circular arc boss (15) as fulcrum is any along the circumference of circular arc pit (16)
Direction is flexibly waved, the rubber gasket (14) by clip (27) on seal receptacle (13), the seal receptacle (13)
Setting above is suitable to rubber gasket (14) and shelves face (25) with the projection that laminating type is shelved, and the sealing mechanism also includes setting
Put in dividing wall (4) below, sealed along the downwardly projecting rubber gasket (14) that is suitable in the fluid passage holes (7) periphery
The lower flange collar (17) of laminating.
7. ventilation stop valve as claimed in claim 6, it is characterised in that the floating core (9) both sides above are symmetrical arranged two
The individual hook (20) for tangling the seal receptacle (13), middle setting is in the circular arc boss (15) of cone shape, circular arc boss
(15) top is circular arc spur (21), and convex bittiness (22) is set positioned at the 3rd other side of circular arc boss (15)；Accordingly,
The both sides of the seal receptacle (13) are symmetrical to open up two hooks breach (23), and the circular arc for circular arc boss (15) insertion is opened up below
Pit (16), the 3rd side of seal receptacle (13) opens up the locating notch (24) for convex bittiness (22) insertion.
8. ventilation stop valve as claimed in claim 6, it is characterised in that the projection of the seal receptacle (13) is shelved face (25) and is
Slope, the lower flange collar (17) of the dividing wall (4) is also corresponding slope.
9. ventilation stop valve as claimed in claim 6, it is characterised in that the projection of the seal receptacle (13) is shelved face (25) and set
The multiple small convex ribs (26) for increasing surface roughness are put, the multiple small convex rib (26) shelves the slope of face (25) along projection
Face is arranged in order.
10. ventilation stop valve as claimed in claim 6, it is characterised in that the clip (27) is made by elastomeric material, is in
Gate-shaped, the bottom of its both sides sets raised button (28)；Accordingly, the both sides of the seal receptacle (13) are set for clip (27)
The button hole (29) that buckles into of raised button (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710098552.4A CN106812984A (en) | 2017-02-23 | 2017-02-23 | One kind ventilation stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710098552.4A CN106812984A (en) | 2017-02-23 | 2017-02-23 | One kind ventilation stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106812984A true CN106812984A (en) | 2017-06-09 |
Family
ID=59111714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710098552.4A Pending CN106812984A (en) | 2017-02-23 | 2017-02-23 | One kind ventilation stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106812984A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915906A (en) * | 2018-08-24 | 2018-11-30 | 亚普汽车部件股份有限公司 | A kind of electronic control module for high-pressure fuel oil system |
| CN110185836A (en) * | 2018-02-23 | 2019-08-30 | 丰田合成株式会社 | Fuel valve |
| CN110778751A (en) * | 2018-07-27 | 2020-02-11 | 株式会社利富高 | Valve device for fuel container |
| CN110985724A (en) * | 2019-12-09 | 2020-04-10 | 江苏奥力威传感高科股份有限公司 | GVV valve pressure maintaining structure and GVV valve |
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| US5950655A (en) * | 1997-02-04 | 1999-09-14 | G.T. Products, Inc. | Mechanical seal ORVR system and control valve |
| CN1353260A (en) * | 2000-11-07 | 2002-06-12 | 易通公司 | Disengaging roll over valve |
| CN201973318U (en) * | 2011-03-23 | 2011-09-14 | 孙达立 | Overflow cutting valve |
| CN102734517A (en) * | 2012-07-02 | 2012-10-17 | 孙达立 | Overflow cutting valve |
| CN203477497U (en) * | 2013-09-23 | 2014-03-12 | 孙达立 | Overflow stop valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5950655A (en) * | 1997-02-04 | 1999-09-14 | G.T. Products, Inc. | Mechanical seal ORVR system and control valve |
| CN1353260A (en) * | 2000-11-07 | 2002-06-12 | 易通公司 | Disengaging roll over valve |
| CN201973318U (en) * | 2011-03-23 | 2011-09-14 | 孙达立 | Overflow cutting valve |
| CN102734517A (en) * | 2012-07-02 | 2012-10-17 | 孙达立 | Overflow cutting valve |
| CN203477497U (en) * | 2013-09-23 | 2014-03-12 | 孙达立 | Overflow stop valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185836A (en) * | 2018-02-23 | 2019-08-30 | 丰田合成株式会社 | Fuel valve |
| CN110778751A (en) * | 2018-07-27 | 2020-02-11 | 株式会社利富高 | Valve device for fuel container |
| CN108915906A (en) * | 2018-08-24 | 2018-11-30 | 亚普汽车部件股份有限公司 | A kind of electronic control module for high-pressure fuel oil system |
| CN108915906B (en) * | 2018-08-24 | 2024-03-29 | 亚普汽车部件股份有限公司 | Electric control module for high-pressure fuel system |
| CN110985724A (en) * | 2019-12-09 | 2020-04-10 | 江苏奥力威传感高科股份有限公司 | GVV valve pressure maintaining structure and GVV valve |
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Application publication date: 20170609 |