The combination valve with hydrops function on automotive oil tank
Technical field
The combination valve with hydrops function that the utility model relates to a kind of on automotive oil tank.Belong to automotive engineering neck
Domain.
Background technique
Six discharge standard of state newly issued will all be implemented in the year two thousand twenty, and part province came into effect in 2019.State
Six discharge standards have newly increased the requirement to vehicle-mounted gas recovery system for oil (abbreviation ORVR system).
ORVR system requirements fuel tank valve body is directly connected to canister, and the oil vapour generated when reaching oiling is adsorbed by canister
It is then exhausted from the purpose of pure air afterwards.Current valve body technology is directly connected to canister by nylon pipeline, when driving
Due to fuel tank ceaselessly shake and fuel tank in pressure rise, it is easy to cause fuel liquid from valve body outflow enter canister,
Canister blocking is in turn resulted in, canister vent resistance becomes larger, and user can not refuel and discharge exceeded phenomenon.
Often solve the problems, such as that oil liquid enters canister by the way of external liquid accumulating device at present, but external liquid accumulating device has
Following problem, first is that cost will increase;Second is that the influence of external liquid accumulating device meeting suspension chassis and vehicle body is not easy to arrange;Third is that external product
Liquid device will increase the pressure drop of tank channel.Therefore, urgent need develops a kind of combination valve of included hydrops function to adapt to city
Field demand.
Summary of the invention
The band hydrops function that purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of on automotive oil tank
Combination valve.
Purpose of the utility model is realized as follows:
A kind of combination valve with hydrops function on automotive oil tank, its main feature is that: it includes upper housing, outside valve body
Shell, valve base, fluid collection chamber, refueling control float, control float spring, exhaust float, exhaust float spring, first row stomata
With second row stomata;
Valve shell includes refueling control chamber and gas exhaust inspecting chamber, bottom and the gas exhaust inspecting chamber of refueling control chamber
The bottom of room communicates, and fluid collection chamber is arranged at the top of valve shell, and upper housing is fixedly connected with valve shell and fluid collection chamber respectively;Valve
Body pedestal is fixedly connected with valve shell;
Refueling control spring and refueling control float are arranged in the refueling control chamber of valve shell, refueling control spring
Upper end connect with refueling control float, the lower end of refueling control spring is connect with the bottom of refueling control chamber, refueling control
Float and first row stomata cooperate, and form sealing;
Exhaust float spring and exhaust float are arranged in the gas exhaust inspecting chamber of valve shell;It is vented the upper of float spring
End is connect with exhaust float, and the lower end of exhaust float spring is connect with the bottom of gas exhaust inspecting chamber, is vented float and second row
Stomata cooperation, forms sealing.
Further, fluid collection chamber includes ring row air cavity, exhaust outlet, the first flow-stopping plate, the second flow-stopping plate and third baffle
Plate, exhaust outlet are located at the top of first row stomata, and the first flow-stopping plate is located at exhaust ports, the first flow-stopping plate and third flow-stopping plate
End all has corner cut, and third flow-stopping plate and the first flow-stopping plate form return flow line, and third flow-stopping plate is formed with ring row air cavity
Gradient face is provided with the notch for gas discharge in the inner ring of ring row air cavity.
Further, upper housing includes escape pipe.
Further, upper housing is fixed with valve shell and fluid collection chamber rotating welding respectively;Valve base and valve shell
It is fixed with ultrasonic bonding.
Further, the first flow-stopping plate is arc-shaped, and the second flow-stopping plate and third flow-stopping plate are straight.
Compared with prior art, the utility model has the beneficial effects that
A kind of combination valve with hydrops function on automotive oil tank of the utility model, built-in liquid accumulating device prevent fuel oil
Liquid dynamic leakage enters canister;Compact configuration design, strong applicability, suspension chassis and fuel tank spacial influence are small;It reduces outer
Set the cost of liquid accumulating device.
Detailed description of the invention
Fig. 1 is a kind of perspective view of the combination valve with hydrops function on automotive oil tank of the utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the A-A cross-sectional view in Fig. 2.
Fig. 4 is that combination valve is mounted on the schematic diagram on fuel tank.
Fig. 5 is the solid that a kind of combination valve with hydrops function on automotive oil tank of the utility model removes upper housing
Figure.
In figure:
Upper housing 1, escape pipe 1.1, valve shell 2, refueling control chamber 2.1, gas exhaust inspecting chamber 2.2, valve base
3, fluid collection chamber 4, ring row air cavity 4.1, gradient face 4.2, exhaust outlet 4.3, notch 4.4, the first flow-stopping plate 4.5, the second flow-stopping plate
4.6 and 4.7 corner cut 4.8 of third flow-stopping plate, refueling control float 5 controls float spring 6, float 7 is vented in shell, and exhaust is floating
Sub-spring 8, first row stomata 9, second row stomata 10, fuel tank 11.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
Referring to Fig. 1-4, the combination valve with hydrops function that the utility model relates to a kind of on automotive oil tank, setting exists
On fuel tank 11, it includes upper housing 1, valve shell 2, valve base 3, fluid collection chamber 4, refueling control float 5, control float spring
6, float 7, exhaust float spring 8, first row stomata 9 and second row stomata 10 are vented.
Upper housing 1 includes escape pipe 1.1;
Valve shell 2 includes refueling control chamber 2.1 and gas exhaust inspecting chamber 2.2, the bottom of refueling control chamber 2.1
Communicated with the bottom of gas exhaust inspecting chamber 2.2, the setting of fluid collection chamber 4 at the top of valve shell 2, upper housing 1 respectively with valve shell 2
It is fixed with 4 rotating welding of fluid collection chamber;Valve base 3 is fixed with valve shell 2 with ultrasonic bonding;
Refueling control spring 6 and refueling control float 5 are arranged in the refueling control chamber 2.1 of valve shell 2, refuel
The upper end of control spring 6 is connect with refueling control float 5, the lower end of refueling control spring 6 and the bottom of refueling control chamber 2.1
Connection.
Exhaust float spring 8 and exhaust float 7 are arranged in the gas exhaust inspecting chamber 2.2 of valve shell 2;It is vented float bullet
The upper end of spring 8 is connect with exhaust float, and the lower end of exhaust float spring 8 is connect with the bottom of gas exhaust inspecting chamber 2.2.
Referring to Fig. 5, fluid collection chamber 4 includes ring row air cavity 4.1, exhaust outlet 4.3, the first flow-stopping plate 4.5, the second flow-stopping plate
4.6 and third flow-stopping plate 4.7, exhaust outlet 4.3 is located at the top of first row stomata 9, and the first flow-stopping plate 4.5 is arc-shaped and is located at row
At port 4.3, the second flow-stopping plate 4.6 and third flow-stopping plate 4.7 are straight, the end of the first flow-stopping plate 4.5 and third flow-stopping plate 4.7
End all has corner cut 4.8, and third flow-stopping plate 4.7 and the first flow-stopping plate 4.5 form return flow line, third flow-stopping plate 4.7 and annular
Discharge chamber 4.1 forms the gradient face 4.2 for assisting oil liquid to flow back, and is provided in the inner ring of ring row air cavity 4.1 and arranges for gas
Notch 4.4 out.
Working principle:
When filling it up with oil jump rifle, refueling control float 5 is in buoyancy float downward, refueling control float 5 and positioned at oiling
The first row stomata 9 controlled in chamber 2.1 cooperates, and forms sealing;It is vented float 7 simultaneously in buoyancy float downward, exhaust is floating
Son 7 cooperatively forms sealing with the second row stomata 10 being located on gas exhaust inspecting chamber 2.2.
When vehicle driving conditions on steady road, the variation volatile pressure liter that causes fuel tank in of the gasoline due to temperature
Height, the pressure rise in gas exhaust inspecting chamber 2.2 are detached from itself and second row stomata 10, arrange at this time to open exhaust float 7
Air bearing sub-spring 8 is pressurized, and the pressure rise in refueling control chamber 2.1 makes itself and first row to open refueling control float 5
Stomata 9 is detached from, and refueling control spring 6 is pressurized at this time, and tank pressure is through first row stomata 9, second row stomata 10 and exhaust outlet
4.3 enter fluid collection chamber 4, enter ring row air cavity 4.1 through the notch 4.4 in 4.1 inner ring of ring row air cavity, most afterwards through escape pipe
1.1 are exhausted (arrow direction in Fig. 5), the oil gas of discharge also pass through canister absorption HC compound after be then exhausted from atmosphere with
When reducing discharge, tank pressure and atmospheric equilibrium, under the action of being vented float spring 8, exhaust float 7 and second row stomata 10
Sealing, under the action of refueling control spring 6, refueling control float 5 and first row stomata 9 are sealed.
When vehicle driving is in bumpy road or rugged hill path, as liquid level of fuel oil in fuel tank is ceaselessly shaken, oil
Pressure rise in case, during exhaust, oil liquid is shaking the double action with pressure through first row stomata 9, second exhaust
Hole 10 and exhaust outlet 4.3 enter in fluid collection chamber 4, and gas part is in fluid collection chamber 4 according to certain path discharge (arrow in Fig. 5
Direction), oil liquid part from exhaust outlet 4.3 come out after, a part of oil liquid is under the action of the first flow-stopping plate 4.5, through exhaust outlet 4.3
Reflux;Another part runs out of the oil liquid of the first flow-stopping plate 4.5 under the action of the second flow-stopping plate 4.6, flows to third flow-stopping plate 4.7
On, the return flow line most formed afterwards through third gear flowing plate 4.7 and the first flow-stopping plate 4.5 enters exhaust outlet 4.3 and flows back;There are also one
Divide the oil liquid for running out of third flow-stopping plate 4.7 to enter exhaust outlet 4.3 through gradient face 4.2 and corner cut 4.8 to flow back;It is last some
Oil liquid remains in fluid collection chamber 4.
The utility model prevents oil liquid to enter canister exhaust outlet through escape pipe 1.1 with gas under the action of fluid collection chamber 4
In, when vehicle enters steady section, the residual oil liquid in fluid collection chamber 4 back flows into fuel tank fluid collection chamber 4 again, it is ensured that
Subsequent exhaust is normally carried out.
The design of fluid collection chamber built in the utility model can effectively reduce dynamic leakage amount and reduce external liquid accumulating device
Expense.
In the above-described embodiments, exemplary description only is carried out to the utility model, but those skilled in the art are reading
Various repair can be carried out to the utility model in the case where not departing from the spirit and scope of the utility model after present patent application
Change.