CN210564824U

CN210564824U - Integrated one-way valve device for fuel steam discharge

Info

Publication number: CN210564824U
Application number: CN201921303077.0U
Authority: CN
Inventors: 郎超; 彭宇祥; 徐启成
Original assignee: Taizhou Teke Plastic Technology Co Ltd
Current assignee: Taizhou Teke Plastic Technology Co Ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-05-19
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses an integrated form check valve device for fuel steam discharges, include: the quick plug connector comprises a fixed block and a fastening block, and the fastening block is movably inserted in the fixed block; the check valve comprises a check valve body, a valve body and a valve body, wherein the check valve body comprises a shell, a conduction pipe, a limiting block and a diaphragm; the conduction pipe is connected with the shell; the shell is of a hollow structure, the limiting block is fixedly arranged in the shell, the diaphragm is movably arranged in the shell, the diaphragm covers a gap between the limiting block and the shell, and the diaphragm is positioned on one side, close to the conduction pipe, in the shell; and the one-way valve body is connected with the quick-plug connector through the connecting piece component. Through the mode, the quick connector shortens the connection distance between the check valve body and the carbon tank electromagnetic valve, saves the connection of an external pipeline, reduces the volume, saves the space and reduces the cost; meanwhile, since an external pipeline is omitted, the number of joints is reduced, and the sealing performance of the whole device can be effectively improved.

Description

Integrated one-way valve device for fuel steam discharge

Technical Field

The utility model relates to a check valve technical field especially relates to an integrated form check valve device for fuel steam discharges.

Background

Currently, the country pays more attention to the problem of automobile pollution (exhaust emission, fuel evaporation leakage and the like), and the requirements of the fifth country are very strict, but the emission limit value and the measurement method of the light automobile pollutant of the < < GB18352.6-2016 (the sixth stage of China) > (national six for short) are more strict, and the emission allowed by the automobile to be emitted into the atmosphere is more strictly controlled on the basis of the fifth country. The limit value of fuel evaporation emission is lower, and meanwhile, a vehicle-mounted diagnosis system of the whole vehicle is required to carry out full-stroke monitoring on a high-pressure desorption path of the fuel system, and monitor desorption flow and whether the whole pipeline is damaged or not.

The fuel steam desorption system generally has two paths, and the engine naturally inhales desorption and turbocharging desorption, and a one-way valve is needed in each path to ensure that airflow does not return. The check valve is connected with the external piece and all needs to be connected through other pipeline, has increased the quantity of spare part, has also increased the quantity of junction between the spare part, not only can occupy more spaces, can influence the leakproofness of whole device moreover.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides an integrated form check valve device for fuel steam discharges, can save external tube coupling, reduces the volume, has saved the space, the cost is reduced.

In order to achieve the above object, the technical solution of the present invention is:

an integrated check valve assembly for fuel vapor venting comprising:

the quick connector comprises a fixed block and a fastening block, the fixed block is of a hollow structure, and the fastening block is movably inserted in the fixed block;

the check valve comprises a check valve body, a valve body and a valve body, wherein the check valve body comprises a shell, a conduction pipe, a limiting block and a diaphragm; the conduction pipe is connected with the shell; the shell is of a hollow structure, the limiting block is fixedly arranged in the shell, the diaphragm is movably arranged in the shell, the diaphragm covers a gap between the limiting block and the shell, and the diaphragm is positioned on one side, close to the conduction pipe, in the shell; and

the one-way valve body is connected with the quick-connection plug through the connecting piece component. Preferably, the connecting piece assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is connected with the quick-connection connector, and the second connecting piece is connected with the one-way valve body; the first connecting piece and the second connecting piece are both round.

Preferably, a groove is formed in the first connecting piece, and a projection matched with the groove is formed in the second connecting piece.

Preferably, a groove is formed in the second connecting piece, and a projection matched with the groove is arranged on the first connecting piece.

Preferably, the membrane is in a sheet shape, and a notch is arranged on the periphery of the membrane.

Preferably, still include the back-off structure, the back-off structure sets up the free end of conduction pipe, the back-off structure includes two section at least back-off blocks of establishing ties, the external diameter that the one end that the back-off block is close to the conduction pipe is greater than the external diameter that the one end that the conduction pipe was kept away from to the back-off block.

Preferably, the guide angle is arranged at the free end of the inverted structure, and the outer diameter of one end, close to the inverted structure, of the guide angle is larger than that of one end, far away from the inverted structure, of the guide angle.

Preferably, a sealing ring is arranged on the guide angle.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model has the following beneficial effect:

the integrated one-way valve device for fuel steam discharge shortens the connection distance between the one-way valve body and the carbon tank electromagnetic valve through the quick connector, saves external pipeline connection, reduces the volume, saves the space and reduces the cost; meanwhile, since an external pipeline is omitted, the number of joints is reduced, and the sealing performance of the whole device can be effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of an integrated check valve device for fuel vapor emission according to the present invention.

Fig. 2 is an exploded view of an integrated check valve assembly for fuel vapor venting in accordance with the present invention.

Fig. 3 is a top view of an integrated check valve device for fuel vapor emission according to the present invention.

3 fig. 3 4 3 is 3 a 3 sectional 3 view 3 taken 3 in 3 the 3 direction 3 of 3 a 3- 3 a 3 in 3 fig. 3 3 3. 3

Description of reference numerals:

the quick connector comprises a quick connector 1, a fixing block 11 and a fastening block 12;

the check valve comprises a check valve body 2, a shell 21, a conduction pipe 22, a limiting block 23 and a diaphragm 24;

the connector assembly 3, the first connector 31, the second connector 32;

an inverted structure 4;

guide angle 5, sealing ring 51.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to the drawings, an integrated check valve device for fuel vapor emission includes: quick connector 1, check valve body 2 and connector assembly 3.

The quick connector 1 comprises a fixing block 11 and a fastening block 12, wherein the fixing block 11 is of a hollow structure, the fastening block 12 is movably inserted into the fixing block 11, and the fastening block 12 can be freely inserted into and out of the fixing block 11. Can be directly connected with the carbon tank electromagnetic valve through the quick connector 1 without pipeline connection. The carbon tank solenoid valve is directly connected with the fixed block 11, and the carbon tank solenoid valve is locked and fixed with the fixed block 11 through the fastening block 12.

When the carbon canister electromagnetic valve is installed, the button fastening block 12 of the quick connection-peg 1 is pressed to move outwards, the quick connection-peg 1 is loosened, and the carbon canister electromagnetic valve is inserted; after the button of the quick-connection-peg 1 is loosened, the fastening block 12 moves inwards, the quick-connection-peg 1 is locked, and the carbon tank electromagnetic valve is connected with the quick-connection-peg 1 without pipeline connection.

The check valve body 2 includes a housing 21, a conduction pipe 22, a stopper 23, and a diaphragm 24. The conduit 22 is connected to the housing 21. The shell 21 is of a hollow structure, the limiting block 23 is fixedly arranged in the shell 21, a gap is reserved between the limiting block 23 and the shell 21, and a circulation channel is formed through the gap. Diaphragm 24 is movably disposed in housing 21, diaphragm 24 is located at one side of housing 21 close to conduction pipe 22, and diaphragm 24 can cover the gap between stopper 23 and housing 21, so as to implement the one-way working function of the one-way valve.

The check valve body 2 is connected with the quick-connection connector 1 through the connecting piece component 3. The connector assembly 3 comprises a first connector 31 and a second connector 32, the first connector 31 is connected with the quick connector 1, and the second connector 32 is connected with the one-way valve body 2. The first connecting piece 31 and the second connecting piece 32 are both circular, and any installation angle between the check valve body 2 and the quick-connection connector 1 can be adjusted according to different overall layouts, so that the quick-connection check valve is suitable for more practical occasions.

In order to tightly connect both the first connecting member 31 and the second connecting member 32, one may be inserted into the other for connection. For example, a groove is provided in the first connecting member 31, and a protrusion adapted to the groove is provided on the second connecting member 32. Or, a groove is arranged in the second connecting piece 32, and a projection matched with the groove is arranged on the first connecting piece 31.

The diaphragm 24 is in a sheet shape, and the periphery of the diaphragm 24 is provided with a notch, so that the flow is not influenced, the manufacturing material of the diaphragm 24 can be saved, and the manufacturing cost of the diaphragm can be saved.

The integrated one-way valve arrangement further comprises an undercut 4, the undercut 4 being provided at the free end of the conduit 22. The back-off structure 4 comprises at least two back-off blocks connected in series, and the outer diameter of one end, close to the conduction tube 22, of each back-off block is larger than the outer diameter of one end, far away from the conduction tube 22, of each back-off block, so that the external pipeline is prevented from loosening.

The integrated one-way valve device further comprises a guide angle 5, wherein the guide angle 5 is arranged at the free end of the inverted buckle structure 4, and the outer diameter of one end, close to the inverted buckle structure 4, of the guide angle 5 is larger than the outer diameter of one end, far away from the inverted buckle structure 4, of the guide angle 5. During the leading angle 5 entered into external pipeline when the assembly, leading angle 5 formed interference fit with external pipeline, can prevent effectively that external pipeline from deviating from to play sealed effect simultaneously.

In order to further improve the sealing performance of the device, a sealing ring 51 is arranged on the guide angle 5, the sealing ring 51 can be a rubber ring, and the arrangement of the sealing ring 51 prevents gas leakage.

In actual operation, when fuel vapor flows in a forward direction (as shown by an arrow in fig. 1) from the quick connector 1, the path connects the stopper 23, the diaphragm 24 and the conduction pipe 22. The air flow blows the diaphragm 24 from the limiting block 23, a gap exists between the diaphragm 24 and the limiting block 23 at the moment, and the air flow flows out of the gap and enters the external pipeline through the conduction pipe 22.

When gas reversely flows (as shown in the reverse direction of the arrow direction in fig. 1), the gas flow flows in from the conduction pipe 22, blows the diaphragm 24 to the end of the limiting block 23, completely covers the gap between the limiting block 23 and the shell 21 through the diaphragm 24, and does not allow any reverse gas flow to flow in to the end of the quick connector 1 through the limiting block 23, so that the reverse gas flow is avoided.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims

1. An integrated check valve assembly for fuel vapor venting, comprising:

the one-way valve body is connected with the quick-connection plug through the connecting piece component.

2. An integrated check valve assembly for fuel vapor venting as set forth in claim 1 wherein: the connecting piece assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is connected with the quick-connection connector, and the second connecting piece is connected with the one-way valve body; the first connecting piece and the second connecting piece are both round.

3. An integrated check valve assembly for fuel vapor venting as set forth in claim 2 wherein: a groove is formed in the first connecting piece, and a lug matched with the groove is arranged on the second connecting piece.

4. An integrated check valve assembly for fuel vapor venting as set forth in claim 2 wherein: a groove is formed in the second connecting piece, and a convex block matched with the groove is arranged on the first connecting piece.

5. An integrated check valve assembly for fuel vapor venting as set forth in claim 1 wherein: the diaphragm is arranged in a sheet shape, and a notch is arranged on the periphery of the diaphragm.

6. An integrated check valve assembly for fuel vapor venting as set forth in claim 1 wherein: still include the back-off structure, the back-off structure sets up the free end of conduction pipe, the back-off structure is including two sections at least back-off pieces of establishing ties, the external diameter that the one end that the back-off piece is close to the conduction pipe is greater than the external diameter that the one end of conduction pipe was kept away from to the back-off piece.

7. An integrated check valve assembly for fuel vapor venting as set forth in claim 6 wherein: still include the guide angle, the guide angle sets up the free end of back-off structure, the external diameter that the guide angle is close to the one end of back-off structure is greater than the external diameter that the guide angle kept away from the one end of back-off structure.

8. An integrated check valve assembly for fuel vapor venting as set forth in claim 7 wherein: and a sealing ring is arranged on the guide angle.