CN206409694U - Breather valve - Google Patents
Breather valve Download PDFInfo
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- CN206409694U CN206409694U CN201720095235.2U CN201720095235U CN206409694U CN 206409694 U CN206409694 U CN 206409694U CN 201720095235 U CN201720095235 U CN 201720095235U CN 206409694 U CN206409694 U CN 206409694U
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Abstract
The utility model is related to the technical field of fuel tank there is provided a kind of breather valve, wherein, the breather valve includes：Housing, the housing has first interface and second interface；Valve opening is formed with valve body, the valve plate；Stomata is formed with positive pressuring film plate, the positive pressuring film plate；Negative pressure diaphragm；Wherein, the positive pressuring film plate and the valve plate can fit the first annular sealing to be formed around the valve opening each other, and the negative pressure diaphragm and the positive pressuring film plate can fit the second ring packing to be formed around the stomata each other.Breather valve described in the utility model realizes different working condition by the cooperation between positive pressuring film plate, negative pressure diaphragm and valve plate, requirement of the sealing to assembly precision just between pressuring film plate and negative pressure diaphragm and just between pressuring film plate and valve plate is relatively low, good sealing effectiveness can be also realized even if there is less rigging error, it is ensured that breather valve can normally be run for different operating modes.
Description
Technical field
The utility model is related to the technical field of fuel tank, more particularly to a kind of breather valve.
Background technology
Normally, the fuel tank of vehicle is provided with breather valve, and the outlet of breather valve is connected with the fuel oil in canister, fuel tank
Steam is stored in canister after breather valve enters canister by absorption, and canister is connected to inlet manifold and can be by the combustion of storage
Oil vapour is transported to inlet manifold.
Breather valve has a variety of working conditions, and when in fuel tank being negative pressure, breather valve allows extraneous gas to enter combustion
In fuel tank, when in fuel tank being malleation, breather valve allows internal gas to discharge, when inner and outer air pressure is steady, and breather valve is closed
To avoid fuel oil volatilization.
Current breather valve has polytype, for example, blocking the structure of fluid passage by steel ball, passes through gas pressure top
Steel ball is opened to open passage, but easily collide during steel ball movement and produce noise；Other breather valve is complicated, its
Sealing property is higher to the precision requirement of assembling, if precision up to standard can not easily cause accidental release.
Utility model content
In view of this, the utility model is directed to a kind of breather valve, higher to assembly precision requirement to solve breather valve
The problem of.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of breather valve, wherein, the breather valve includes：
Housing, the housing has chamber, and the roof of the housing is provided with first interface, and the bottom wall of the housing is set
There is second interface；
Valve body, the periphery of the valve plate of the valve body is connected to the internal perisporium of the housing, the chamber is divided on
Valve opening is formed with lower two parts, the valve plate；
Positive pressuring film plate, the positive pressuring film plate can be moved back and forth between the valve plate and the roof and by the first bullet
Property part be connected on the roof, the positive pressuring film plate and be formed with stomata, and the periphery and the housing of the positive pressuring film plate
Internal perisporium between form gap；
Negative pressure diaphragm, the negative pressure diaphragm can be moved back and forth between the positive pressuring film plate and the valve plate and by
Two elastic components are connected to the valve plate；
Wherein, the positive pressuring film plate and the valve plate can fit to be formed around the first annular close of the valve opening each other
Envelope, the negative pressure diaphragm and the positive pressuring film plate can fit the second ring packing to be formed around the stomata each other.
Further, it is described in the case that the pressure at the first interface is equal to the pressure at the second interface
Positive pressuring film plate and the valve plate form the first annular sealing, and the negative pressure diaphragm forms described with the positive pressuring film plate
Second ring packing, the first interface is not connected each other with the second interface.
Further, it is described in the case that the pressure at the first interface is more than the pressure at the second interface
Gas at first interface can be flow at the second interface；Pressure at the first interface connects less than described second
In the case of pressure at mouthful, the gas at the second interface can be flow at the first interface, and described first
The pressure that gas flow rate when the pressure of interface is more than the pressure at the second interface is more than at the first interface is less than
Gas flow rate during pressure at the second interface.
Further, it is described in the case that the pressure at the first interface is more than the pressure at the second interface
Positive pressuring film plate and the valve plate form the first annular sealing, and the negative pressure diaphragm respectively with the positive pressuring film plate, institute
Valve plate is stated to depart to form gap, the gas from the first interface can via the stomata, the positive pressuring film plate with it is described
The gap of negative pressure diaphragm, the negative pressure diaphragm and the gap of the valve plate and the valve opening reach the second interface.
Further, it is described in the case that the pressure at the first interface is less than the pressure at the second interface
Positive pressuring film plate and the valve plate are disengaged from forming gap, and the negative pressure diaphragm and the positive pressuring film plate form second annular
Sealing, the negative pressure diaphragm is disengaged from forming gap with the valve plate, and the gas from the second interface can be via institute
State the gap of gap, the positive pressuring film plate and the valve plate of valve opening, the negative pressure diaphragm and the valve plate, the positive pressuring film plate
Gap between the internal perisporium of the housing reaches the first interface.
Further, the section of the stomata is more than section in gap between the positive pressuring film plate and the internal perisporium of the housing
Face.
Further, the lower surface of the positive pressuring film plate is fitted with sealing gasket, and the upper surface of the valve plate is formed with can
The first collar flange of the sealing gasket is sealingly engaged in, the upper surface of the negative pressure diaphragm, which is formed with, can be sealingly engaged in institute
The second collar flange of sealing gasket is stated, the diameter of second collar flange is less than the diameter of first collar flange.
Further, the positive pressuring film plate is formed with the first depressed part to lower recess, and the stomatal limiting value is in described
The bottom of one depressed part, the negative pressure diaphragm is formed with the second depressed part to lower recess, and first depressed part can be accommodated
In second depressed part, and the upper surface of the valve plate is recessed can accommodate second depressed part.
Further, the valve body includes the cylindrical sidewall extended downwardly from the periphery of the valve plate, the cylindrical sidewall
Axially movable valve element is provided with the barrel chamber surrounded, the valve element is spaced to allow fluid to lead to the cylindrical sidewall
Cross, the valve element can be floated to block the valve opening by entering the liquid in the barrel chamber.
Further, oiled-plate method was fixed between the bottom wall of the valve body and the housing, the valve element passes through the 3rd bullet
Property part be connected to it is described cross oiled-plate method, it is described cross oiled-plate method on be formed with oil-through hole.
Relative to prior art, breather valve described in the utility model has the advantage that：
Breather valve described in the utility model realizes different works by the cooperation between positive pressuring film plate, negative pressure diaphragm and valve plate
Make state, between positive pressuring film plate and negative pressure diaphragm and positive requirement of the sealing to assembly precision between pressuring film plate and valve plate compared with
It is low, it can also realize good sealing effectiveness even if there is less rigging error, it is ensured that breather valve can be directed to different operating modes
And normally run.
Other features and advantages of the utility model will be described in detail in subsequent embodiment part.
Brief description of the drawings
Constitute a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The exemplary embodiment of type and its illustrate be used for explain the utility model, do not constitute to it is of the present utility model it is improper limit.
In the accompanying drawings：
Fig. 1 is the explosive view of the breather valve described in the utility model embodiment；
Fig. 2 is the sectional view of the breather valve described in the utility model embodiment, wherein, breather valve is in poised state；
Fig. 3 is phantom of the breather valve described in the utility model embodiment in negative pressure state；
Fig. 4 is phantom of the breather valve described in the utility model embodiment in barotropic state.
Description of reference numerals：
1- housings, 2- valve bodies, the positive pressuring film plates of 3-, 4- negative pressure diaphragms, 5- valve elements, 6- crosses oiled-plate method, 11- first interfaces, 12-
Two interfaces, 21- valve plates, 22- cylindrical sidewalls, 23- valve openings, the elastic components of 31- first, 32- sealing gaskets, 33- stomatas, the bullets of 41- second
Property part, the elastic components of 51- the 3rd.
Embodiment
It should be noted that in the case where not conflicting, the spy in embodiment and embodiment in the utility model
Levying to be mutually combined.
Below with reference to the accompanying drawings and combine embodiment and describe the utility model in detail.
The utility model provides a kind of breather valve, wherein, the breather valve includes：Housing 1, the housing 1 has chamber
Room, and the roof of the housing 1 is provided with first interface 11, and the bottom wall of the housing 1 is provided with second interface 12；Valve body 2, it is described
The periphery of the valve plate 21 of valve body 2 is connected to the internal perisporium of the housing 1, by the chamber be divided into above and below two parts, it is described
Valve opening 23 is formed with valve plate 21；Positive pressuring film plate 3, the positive pressuring film plate 3 can be past between the valve plate 21 and the roof
Move through the first elastic component 31 again and be connected on the roof, the positive pressuring film plate 3 and be formed with stomata 33, and it is described just
Gap is formed between the internal perisporium of the periphery of pressuring film plate 3 and the housing 1；Negative pressure diaphragm 4, the negative pressure diaphragm 4 can be in institute
State and moved back and forth between positive pressuring film plate 3 and the valve plate 21 and the valve plate 21 is connected to by the second elastic component 41；Wherein, institute
State positive pressuring film plate 3 and the valve plate 21 can fit the first annular sealing to be formed around the valve opening 23, the negative pressure each other
Diaphragm 4 and the positive pressuring film plate 3 can fit the second ring packing to be formed around the stomata 33 each other.
Formed as shown in figure 1, housing 1 can be connected by two parts, in order to dismantle assembling, naturally it is also possible to be a bodily form
Into part；Valve plate 21 is used for the chamber for separating housing 1, can disconnect first interface 11 and second when valve opening 23 is blocked
Connected between interface 12, formed and be tightly connected between valve plate 21 and the internal perisporium of housing 1, for example, sealing can be set therebetween
Circle；Positive pressuring film plate 3 can be made up of plate, and be connected to by the first elastic component 31 roof of housing 1, and stomata 33 and
Gas can be allowed to pass through between the internal perisporium of positive pressuring film plate 3 and housing 1；Negative pressure diaphragm 4 can be made up of plate, and pass through
Second elastic component 41 is connected to valve plate 21.
Wherein, when positive pressuring film plate 3 and valve plate 21 form the first annular sealing, gas etc. can not be from positive pressuring film plate 3
It is directed radially through between valve plate 21, when negative pressure diaphragm 4 and positive pressuring film plate 3 form second ring packing, on positive pressuring film plate 3
Stomata blocked by negative pressure diaphragm 4, therefore positive pressuring film plate 3 and negative pressure diaphragm 4 can be considered single sealing plate when fitting each other.Institute
State first annular sealing and second ring packing aligns pressuring film plate 3 and the position accuracy demand of negative pressure diaphragm 4 is smaller, Ke Yiyun
Perhaps a certain amount of radial displacement error, and by the resilient force of elastic component, positive pressuring film plate 3 and negative pressure diaphragm can be buffered
4 movement, reduces noise and produces.
Above-described breather valve can be installed on fuel tank, wherein, first interface 11 can be connected to canister, and second connects
Mouth 12 is connected to fuel tank.The breather valve of this programme can for example be put down under different pressure environments with different state operations
Weighing apparatus state (first interface 11 is equal with the pressure of second interface 12), (pressure of first interface 11 connects negative pressure state more than second
Mouthfuls 12 pressure) and barotropic state (pressure of first interface 11 is less than the pressure of second interface 12), first interface 11 with
Under the pressure effect of second interface 12, positive pressuring film plate 3 and negative pressure diaphragm 4 are accordingly moved to different positions, realize different
Working condition.
First, as shown in Fig. 2 the pressure at the first interface 11 is equal to the feelings of the pressure at the second interface 12
Under condition, the positive pressuring film plate 3 and the valve plate 21 form the first annular sealing, and the negative pressure diaphragm 4 with it is described just
Pressuring film plate 3 forms second ring packing, and the first interface 11 is not connected each other with the second interface 12.It is described herein
Poised state correspond to fuel tank inside steam (steam of the fuel oil such as gasoline) the pressure feelings equal with outside atmosphere
Condition, now, under the flexible bias pressure and gas pressure of the first elastic component 31, positive pressuring film plate 3 fits in the formation of valve plate 21 first
Ring packing, negative pressure diaphragm 4 fits in positive pressuring film plate 3 formation the under the flexible bias pressure and gas pressure of the second elastic component 41
Second ring is sealed, now, and valve opening 23 forms the positive pressuring film plate 3 of one by laminating and negative pressure diaphragm 4 is blocked, so as to prevent gas stream
It is logical.That is, in the case of the inside of fuel tank and external pressure identical, breather valve, which is in, closes off-state, a side
Face avoids the fuel-steam of inside from leaking loss, on the other hand also reduces extraneous gas and enters and fuel oil is polluted in fuel tank.
In addition, when the pressure at first interface 11 with second interface 12 is different, i.e., there is pressure with outside inside fuel tank
When poor, by by the opening for realizing breather valve of positive pressuring film plate 3 and negative pressure diaphragm 4, to balance pressure inside fuel tank and outside
Power.
Especially, in the case that the pressure at the first interface 11 is more than the pressure at the second interface 12, institute
Stating the gas at first interface 11 can flow at the second interface 12；Pressure at the first interface 11 is less than institute
In the case of stating the pressure at second interface 12, the gas at the second interface 12 can flow to the first interface 11
Place, and the gas flow rate of pressure at the first interface 11 when being more than the pressure at the second interface 12 is more than described the
Pressure at one interface 11 is less than the gas flow rate during pressure at the second interface 12.The breather valve is installed on fuel tank
In the case of, should be by breather valve from external complement air, it is to avoid combustion when fuel tank internal pressure is smaller (negative pressure state)
Fuel tank Inward deflection；When fuel tank internal pressure is larger (barotropic state), fuel oil should be discharged to outside by breather valve and steamed
Vapour, the fuel-steam discharged from first interface 11 can be absorbed into canister, and the steam of absorption can be returned into inlet manifold
Receive and utilize.Especially, flow velocity during fuel tank discharge steam is relatively small, it is to avoid too fast leak of steam can not be more abundant by canister
Absorb.
Wherein, as shown in figure 3, the pressure at the first interface 11 is more than the feelings of the pressure at the second interface 12
Under condition, the positive pressuring film plate 3 and the valve plate 21 form the first annular sealing, and the negative pressure diaphragm 4 respectively with institute
State positive pressuring film plate 3, the disengaging of the valve plate 21 and form gap, the gas from the first interface 11 can be via the stomata
33rd, the gap of the positive pressuring film plate 3 and the negative pressure diaphragm 4, the gap of the negative pressure diaphragm 4 and the valve plate 21 and described
Valve opening 23 reaches the second interface 12.Positive pressuring film plate 3 and valve plate 21 formed it is described it is first annular sealedly in the case of, gas
It cannot pass through the gap between positive pressuring film plate 3 and the internal perisporium of housing 1 and reach at valve opening 23, be i.e. the gas from first interface 11
Body is only flowed at second interface 12 by the stomata 33 on positive pressuring film plate 3, wherein, the A curves in Fig. 3 show gas from first
Interface 11 arrives the flow path of valve opening 23.
In addition, as shown in figure 4, the pressure at the first interface 11 is less than the feelings of the pressure at the second interface 12
Under condition, the positive pressuring film plate 3 and the valve plate 21 are disengaged from forming gap, the negative pressure diaphragm 4 and the shape of positive pressuring film plate 3
Into second ring packing, the negative pressure diaphragm 4 is disengaged from forming gap with the valve plate 21, from the second interface
12 gas can via the valve opening 23, the negative pressure diaphragm 4 and the valve plate 21 gap, the positive pressuring film plate 3 and institute
The gap stated between the gap of valve plate 21, the internal perisporium of the positive pressuring film plate 3 and the housing 1 reaches the first interface 11.
In the case where negative pressure diaphragm 4 and positive pressuring film plate 3 form second ring packing, stomata 33 by negative pressure diaphragm 4 block without
Gas is allowed to pass through, gas only can reach first interface 11 by the gap between positive pressuring film plate 3 and the internal perisporium of housing 1, its
Middle Fig. 4 B curves show gas from valve opening 23 to the flow path of first interface 11.
Further, the section of the stomata 33 is more than gap between the internal perisporium of the positive pressuring film plate 3 and the housing 1
Section.When breather valve works in negative pressure state, the gas at first interface 11 is reached at second interface 12 through air passing hole 33,
When breather valve works in barotropic state, the gas of second interface piece passes through gap between positive pressuring film plate 3 and the internal perisporium of housing 1
First interface 11 is reached, when the section of stomata 33 is relatively large, it is ensured that when breather valve is installed on fuel tank, into fuel oil
The gas flow rate of case is more than the flow velocity that gas is discharged from fuel tank.
Specifically, the lower surface of the positive pressuring film plate 3 is fitted with sealing gasket 32, and the upper surface of the valve plate 21 is formed with energy
The first collar flange of the sealing gasket 32 is enough sealingly engaged in, the upper surface of the negative pressure diaphragm 4 is formed with to seal and connect
Together in the second collar flange of the sealing gasket 32, the diameter of second collar flange is less than the straight of first collar flange
Footpath.In this programme, it is described it is first annular sealing and second ring packing independently of one another without interacting, use with
The mode that upper described annular shape flange coordinates with sealing gasket 32, the first annular sealing and second ring packing can
To be more easily formed under pressure.
In addition, the positive pressuring film plate 3 is formed with the first depressed part to lower recess, the stomata 33 is formed at described first
The bottom of depressed part, the negative pressure diaphragm 4 is formed with the second depressed part to lower recess, and first depressed part can be contained in
In second depressed part, and the upper surface of the valve plate 21 is recessed can accommodate second depressed part.Described first
Depressed part can play a part of improving the positive bulk strength of pressuring film plate 3, it is to avoid the positive stress flexural deformation of pressuring film plate 3, also, first
The lower end of elastic component 31 can be contained in first depressed part, it is to avoid miss one another, similar, and second depressed part also may be used
To play the same role, explanation is not repeated.Especially, the upper surface of valve plate 21 is recessed, to accommodate second depressed part,
And in the case where valve plate 21 and positive pressuring film plate 3 are fitted each other, negative pressure diaphragm 4 can be allowed to move between, and
When negative pressure diaphragm 4 and valve plate 21 and positive pressuring film plate 3 are remained disengaged from, the flow path for the gas that negative pressure diaphragm 4 will not separate,
Negative pressure diaphragm 4 can be designed as maintaining gap with valve plate 21 all the time, even if the two is partly fitted.
The breather valve can not only adjust the gas balance between first interface 11 and second interface 12, can also realize anti-
The function that only liquid fuel is leaked in fuel tank, will be detailed below.
Specifically, the valve body 2 includes the cylindrical sidewall 22 extended downwardly from the periphery of the valve plate 21, the tubular side
Axially movable valve element 5 is provided with the barrel chamber that wall 22 is surrounded, the valve element 5 is spaced to allow with the cylindrical sidewall 22
Fluid passes through, and the valve element 5 can be floated to block the valve opening 23 by entering the liquid in the barrel chamber.Valve body 2 and valve
Fit structure between core 5 can prevent fuel oil from being discharged by valve opening 23 and first interface 11 when fuel tank crosses oiling.Institute
When the second interface 12 for stating breather valve is connected to fuel tank, start to enter via second interface 12 during oil mass overfill in fuel tank
In to housing 1 and in the barrel chamber of entrance cylindrical sidewall 22, so that fuel oil can float valve element 5 so that the blocking valve opening 23 of valve element 5, keeps away
Exempt from fuel oil and pass through valve opening 23.In addition, when fuel tank is unexpectedly overturn, such as during vehicle rollover, be also possible to prevent fuel oil via
Breather valve is discharged, it is to avoid fuel oil triggers fire in outside unintended ignition.
Further, oiled-plate method 6 was fixed between the bottom wall of the valve body 2 and the housing 1, the valve element 5 passes through
Three elastic components 51 are connected to the oiled-plate method 6 excessively, and described cross on oiled-plate method 6 is formed with oil-through hole.Enter housing 1 in no liquid fuel
In in the case of, the valve opening 23 that the 3rd elastic component 51 can hold it away from valve element 5 on the position of valve plate 21, valve plate 21 is kept
For open mode, to allow the fuel-steam from second interface 12 to pass through valve opening 23；When liquid fuel is entered in housing 1
When, valve element 5 can move towards valve plate 21 under the buoyancy of fuel oil and block valve opening 23, or when housing 1 is overturn, valve
Core 5 moves towards valve plate 21 under self gravitation effect and blocks valve opening 23, so as to prevent fuel oil from being flowed out by valve opening 23.
Wherein, sealing gasket is can be set in the upper end of valve element 5, and the sealing gasket is fixed on valve element 5 by fixture.
In this programme, housing 1, excessively oiled-plate method 6, valve element 5 and valve body 2 can select POM materials, using injection molding；Sealing
The oil resisting materials such as optional FKM (fluorubber), the ECO rubber such as circle and sealing gasket；Positive pressuring film plate and negative pressure diaphragm can select stainless
Steel material, and use punch forming；First elastic component 31, the second elastic component 41 and the 3rd elastic component 51 can be springs etc..
The foregoing is only better embodiment of the present utility model, not to limit the utility model, it is all
Within spirit and principle of the present utility model, any modification, equivalent substitution and improvements made etc. should be included in this practicality new
Within the protection domain of type.
Claims (10)
1. a kind of breather valve, it is characterised in that the breather valve includes：
Housing (1), the housing (1) has chamber, and the roof of the housing (1) is provided with first interface (11), the shell
The bottom wall of body (1) is provided with second interface (12)；
Valve body (2), the periphery of the valve plate (21) of the valve body (2) is connected to the internal perisporium of the housing (1), by the chamber
Valve opening (23) is formed with two parts above and below being divided into, the valve plate (21)；
Positive pressuring film plate (3), the positive pressuring film plate (3) can move back and forth and pass through between the valve plate (21) and the roof
First elastic component (31) is connected on the roof, the positive pressuring film plate (3) and is formed with stomata (33), and the positive pressuring film plate
(3) gap is formed between periphery and the internal perisporium of the housing (1)；
Negative pressure diaphragm (4), the negative pressure diaphragm (4) can back and forth be moved between the positive pressuring film plate (3) and the valve plate (21)
Move and the valve plate (21) is connected to by the second elastic component (41)；
Wherein, the positive pressuring film plate (3) and the valve plate (21) can fit to be formed around the valve opening (23) first each other
Ring packing, the negative pressure diaphragm (4) and the positive pressuring film plate (3) can fit to be formed around the stomata (33) each other
Second ring is sealed.
2. breather valve according to claim 1, it is characterised in that the pressure at the first interface (11) place is equal to described
In the case of the pressure at second interface (12) place, the positive pressuring film plate (3) and the valve plate (21) formation are described first annular close
Envelope, and the negative pressure diaphragm (4) forms second ring packing, the first interface (11) with the positive pressuring film plate (3)
Do not connected each other with the second interface (12).
3. breather valve according to claim 2, it is characterised in that the pressure at the first interface (11) place is more than described
In the case of the pressure at second interface (12) place, the gas at first interface (11) place can flow to the second interface
(12) place；In the case where the pressure at the first interface (11) place is less than the pressure at the second interface (12) place, described the
The gas at two interfaces (12) place can flow to the first interface (11) place, and the pressure at the first interface (11) place is big
The pressure that gas flow rate when the pressure at the second interface (12) place is more than the first interface (11) place is less than described the
The gas flow rate during pressure at two interfaces (12) place.
4. breather valve according to claim 3, it is characterised in that the pressure at the first interface (11) place is more than described
In the case of the pressure at second interface (12) place, the positive pressuring film plate (3) and the valve plate (21) formation are described first annular close
Envelope, and the negative pressure diaphragm (4) forms gap with the positive pressuring film plate (3), the valve plate (21) disengaging respectively, from described
The gas of first interface (11) can be between the stomata (33), the positive pressuring film plate (3) and the negative pressure diaphragm (4)
Gap, the negative pressure diaphragm (4) reach the second interface (12) with the gap of the valve plate (21) and the valve opening (23).
5. breather valve according to claim 4, it is characterised in that the pressure at the first interface (11) place is less than described
In the case of the pressure at second interface (12) place, the positive pressuring film plate (3) and the valve plate (21) are disengaged from forming gap, institute
State negative pressure diaphragm (4) and the positive pressuring film plate (3) formation second ring packing, the negative pressure diaphragm (4) and the valve plate
(21) it is disengaged from forming gap, the gas from the second interface (12) can be via the valve opening (23), the negative pressure
The gap of diaphragm (4) and the valve plate (21), the gap of the positive pressuring film plate (3) and the valve plate (21), the positive pressuring film plate
(3) gap between the internal perisporium of the housing (1) reaches the first interface (11).
6. breather valve according to claim 5, it is characterised in that the section of the stomata (33) is more than the positive pressuring film plate
(3) between the internal perisporium of the housing (1) gap section.
7. breather valve according to claim 1, it is characterised in that the lower surface of the positive pressuring film plate (3) is fitted with sealing
Pad (32), the upper surface of the valve plate (21), which is formed with, can be sealingly engaged in the first collar flange of the sealing gasket (32),
The upper surface of the negative pressure diaphragm (4), which is formed with, can be sealingly engaged in the second collar flange of the sealing gasket (32), described
The diameter of second collar flange is less than the diameter of first collar flange.
8. breather valve according to claim 1, it is characterised in that the positive pressuring film plate (3) is formed with to lower recess
One depressed part, the stomata (33) is formed at the bottom of first depressed part, and the negative pressure diaphragm (4) is formed with to lower recess
The second depressed part, first depressed part can be contained in second depressed part, and the upper table of the valve plate (21)
Face is recessed can accommodate second depressed part.
9. breather valve according to claim 1, it is characterised in that the valve body (2) includes the week from the valve plate (21)
Axially movable valve element (5) is provided with the cylindrical sidewall (22) that edge is extended downwardly, the barrel chamber that the cylindrical sidewall (22) surrounds,
The valve element (5) is spaced to allow fluid from the cylindrical sidewall (22), and the valve element (5) can be by entering
The liquid in barrel chamber is stated to float to block the valve opening (23).
10. breather valve according to claim 9, it is characterised in that the bottom wall of the valve body (2) and the housing (1) it
Between be fixed with oiled-plate method (6), the valve element (5) by the 3rd elastic component (51) be connected to it is described cross oiled-plate method (6), it is described to cross oiled-plate method
(6) oil-through hole is formed with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720095235.2U CN206409694U (en) | 2017-01-22 | 2017-01-22 | Breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720095235.2U CN206409694U (en) | 2017-01-22 | 2017-01-22 | Breather valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206409694U true CN206409694U (en) | 2017-08-15 |
Family
ID=59557420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720095235.2U Active CN206409694U (en) | 2017-01-22 | 2017-01-22 | Breather valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206409694U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591561A (en) * | 2018-05-08 | 2018-09-28 | 钱娟娟 | Dredging pipe breather valve |
| CN110285245A (en) * | 2019-06-20 | 2019-09-27 | 徐州八方安全设备有限公司 | A kind of breathing valve core |
-
2017
- 2017-01-22 CN CN201720095235.2U patent/CN206409694U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591561A (en) * | 2018-05-08 | 2018-09-28 | 钱娟娟 | Dredging pipe breather valve |
| CN110285245A (en) * | 2019-06-20 | 2019-09-27 | 徐州八方安全设备有限公司 | A kind of breathing valve core |
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