CN103672050A - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN103672050A CN103672050A CN201310738537.3A CN201310738537A CN103672050A CN 103672050 A CN103672050 A CN 103672050A CN 201310738537 A CN201310738537 A CN 201310738537A CN 103672050 A CN103672050 A CN 103672050A
- Authority
- CN
- China
- Prior art keywords
- valve
- support frame
- safety check
- supporting frame
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
Abstract
The invention relates to a check valve which comprises a valve body, a valve, a supporting frame, a rotary shaft and a torsion spring. The valve body comprises a wall part and a valve hole, and the valve is arranged in the valve hole. The valve comprises a valve main body and a first buckling structure arranged on the valve main body. The supporting frame comprises a supporting frame body, a second buckling structure and a supporting frame connecting part, wherein the second buckling structure is arranged on the supporting frame body, the second buckling structure and the first buckling structure are buckled and fixed, and the supporting frame connecting part is arranged on one side of the supporting frame body. The rotary shaft penetrates through the supporting frame connecting part. The supporting frame connecting part can rotate around the rotary shaft. The two ends of the rotary shaft are fixed to the wall part of the valve body. The rotary shaft is sleeved with the torsion spring. The torsion spring comprises a first extending section and a second extending section, wherein the first extending section elastically abuts against the position between the valve main body of the valve and the supporting frame body of the supporting frame, and the second extending section elastically abuts against the wall part. The check valve is low in pressure drop, and redundant gasoline during gasoline adding can be effectively prevented from staying in the valve hole.
Description
Technical field
The present invention relates to valve technology, be specifically related to a kind of safety check.
Background technique
In vehicle fuel oil evaporation system, conventionally utilize safety check to guarantee that fuel sealing is in fuel tank, and in refueling process, prevent the volatilization of gasoline.Usually, one end of safety check connects oil filling pipe, and the other end connects fuel tank.
At present, the safety check of automobile is to adopt helical spring to be directly pressed on valve and to seal, and helical spring need to have the compressive force that intensity is larger just can reach sealing effect.Yet said structure can make the required power of valve open large (be that valve pressure drop is large, gasoline needs larger impact force just can open valve), and in the time of can causing refueling, valve be closed too early, make part gasoline can not enter fuel tank, remain in oil filling pipe, finally volatilization.In addition, when automobile does not have oil in roadside, and near there is no gas station, for example, when car owner need to use the container (bottle and little oil tank) that gasoline is housed directly to pour in oil filler, because these containers have very fast speed oil and the very large oil pressure that adds of adding unlike the nozzle of gas station, the pressure drop of above-mentioned safety check is larger, makes valve be not easy to be opened, and probably causes refueling unsuccessfully; Even if valve is opened, also can cause residual more gasoline in oil filling pipe because pressure drop is closed too early compared with ambassador's valve, the residual gasoline of this part can not enter fuel tank, and directly volatilization slatterns.
Summary of the invention
In view of this, it is low that the present invention aims to provide a kind of valve pressure drop, and while preventing from refueling, too much gasoline remains in the safety check in valve opening (oil filling pipe).
The present invention takes following technological scheme to address the above problem:
A safety check, comprises valve body, valve, supporting frame, rotating shaft and torque spring.Described valve body comprises wall portion and the valve opening being surrounded by described wall portion, and described valve is arranged in described valve opening.Described valve comprises valve body and is arranged on the first fastening structure on described valve body.Support frame as described above comprises supporting frame body, the second fastening structure and supporting frame joint, and described the second fastening structure is arranged on support frame as described above body and is interlocked fixing with described the first fastening structure.Support frame as described above joint is arranged at a side of support frame as described above body.Described rotating shaft can be rotated around described rotating shaft through support frame as described above joint and support frame as described above joint.The wall portion of described valve body is fixed at the two ends of described rotating shaft.Described torque spring is set in described rotating shaft.Described torque spring comprises the first extension and the second extension, and described the first extension resilient abutment is between the valve body of described valve and the supporting body of support frame as described above, and described the second extension resilient abutment is in described wall portion.
Preferably, described the first fastening structure comprises that valve fastens mandrel and valve attachment hole, described valve fastens the center that mandrel is arranged at described valve body, described valve attachment hole is arranged at the periphery of described valve body, described the second fastening structure comprises supporting frame fastening hole and supporting frame attachment post, support frame as described above fastening hole is opened in the center of support frame as described above body and fastens mandrel with described valve and is interlocked fixingly, and support frame as described above attachment post is arranged on the edge of support frame as described above body and is connected to a fixed with described valve attachment hole.
Preferably, described valve fastens mandrel and comprises connected successively root, neck and head, described root and described neck are cylindrical body, described head is round platform, the external diameter of the external diameter of described root and the large end of described head is all greater than the external diameter of described neck, the external diameter of the external diameter of described root and the large end of described head is all greater than the aperture of support frame as described above fastening hole, described neck and support frame as described above fastening hole phase fit, and described head passes support frame as described above fastening hole.
Preferably, described valve attachment hole arranges in circumference equal intervals around described valve fastening mandrel.
Preferably, support frame as described above body has also extended to form butting section, described butting section and described the first extension part resilient abutment.
Preferably, support frame as described above joint is in the shape of the letter V, support frame as described above joint comprises the first link arm and the second link arm, and described the first link arm and described the second link arm extend to form from support frame as described above body, and described butting section is between described the first link arm and described the second link arm.
Preferably, support frame as described above joint offers axis hole, and the central axis of described axis hole is vertical with the central axis of described valve opening, and described rotating shaft is located in described axis hole rotationally.
Preferably, described valve body also comprises step, and described step is positioned at valve opening and is arranged in described wall portion, and described valve is resisted against on described step.
Preferably, described safety check also comprises seal washer, and described seal washer is arranged between the step and described valve of described valve body (10).
Preferably, on the circumference of described valve body, offer a plurality of the first tapped holes, on the circumference of described seal washer, offer a plurality of the second tapped holes, described a plurality of the first tapped hole is corresponding one by one with described a plurality of the second tapped holes, and described seal washer is fixed to described valve through described a plurality of the first tapped holes and described a plurality of the second tapped hole respectively by a plurality of screws.
Compared with prior art, the beneficial effect of safety check of the present invention is:
Safety check of the present invention by arranging rotating shaft on supporting frame, torque spring is set in rotating shaft, and utilize the first fastening structure and the second fastening structure that valve and supporting frame are fixed, make the first extension resilient abutment of torque spring between valve and supporting frame, the second extension resilient abutment is in the wall portion of described valve body, utilize torque spring to carry out the opening and closing of control valve, pressure drop lower (generally only having helical spring 1/4th) due to the structure generation of torque spring, therefore, make valve pressure drop low, during oiling, only need the just complete Open valve of energy of less pressure, and valve just can be closed when pressure almost disappears, thereby while effectively preventing from refueling, too much gasoline remains in valve opening (oil filling pipe), avoid waste.
Accompanying drawing explanation
Fig. 1 is the constitutional diagram of safety check of the present invention.
Fig. 2 is the exploded view of safety check of the present invention.
Fig. 3 is the schematic diagram of the valve of safety check of the present invention.
Fig. 4 is the schematic diagram of the supporting frame of safety check of the present invention.
Fig. 5 is the plan view of safety check of the present invention.
Fig. 6 is that safety check of the present invention is along the sectional view of A-A direction in Fig. 5.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1-6, the embodiment of the present invention provides a kind of safety check, comprises valve body 10, valve 20, supporting frame 30, rotating shaft 40 and torque spring 50.
Wherein, described valve body 10 comprises wall portion 11 and the valve opening 12 being surrounded by described wall portion 11.Described valve 20 is arranged in described valve opening 12.Described valve 20 comprises valve body 21 and and is arranged on the first fastening structure on described valve body 21.Support frame as described above 30 comprises supporting frame body 31, the second fastening structure and supporting frame joint 32.Described the second fastening structure is arranged on support frame as described above body 31 and is interlocked fixing with described the first fastening structure.Support frame as described above joint 32 is arranged at a side of support frame as described above body 31.Described rotating shaft 40 can be rotated around described rotating shaft 40 through support frame as described above joint 32 and support frame as described above joint 32.The wall portion 11 of described valve body 10 is fixed at the two ends of described rotating shaft 40.Described torque spring 50 is set in described rotating shaft 40.Described torque spring 50 comprises the first extension 51 and the second extension 52, described the first extension 51 resilient abutment are between the valve body 21 of described valve 20 and the supporting body 31 of support frame as described above 30, and described the second extension 52 resilient abutment are in described wall portion 11.
Particularly, described valve body 10 comprises outer valve 101 and inner valve body 102, and described outer valve 101 fits are fixed on the outside of described inner valve body 102 and are positioned at one end of described inner valve body 102.Described wall portion 11 is formed by described inner valve body 102.Described valve opening 12 is ladder-type through hole.Described valve body 10 also comprises step 13, and described step 13 is positioned at valve opening 12 and is arranged in described wall portion 11.Described step 13 is positioned at the one end away from described outer valve 101.In the present embodiment, the cross section of described valve body 10 is annulus, and described valve opening 12 is circular hole.
Described valve 20 is used to open or close described valve opening 12.Described valve 20 is resisted against on the step 13 of described valve body 10.Described valve body 21 is ring.Described the first fastening structure comprises that valve fastens mandrel 22 and valve attachment hole 23.Described valve fastens mandrel 22 and is arranged at described valve body 21 center, and described valve attachment hole 23 is arranged at the periphery of described valve body 21.
Described valve fastens mandrel 22 and comprises connected successively root 221, neck 222 and head 223.Described root 221 and described neck 222 are cylindrical body, and described head 223 is round platform.The external diameter of the large end of the external diameter of described root 221 and described head 223 is all greater than the external diameter of described neck 221.The external diameter of described root 221 is greater than the external diameter of the large end of described head 223.
Described valve attachment hole 23 fastens mandrel 22 around described valve and arranges in circumference equal intervals.Described valve attachment hole 23 is arranged on the inner circumference of valve body 21 of described ring.In the present embodiment, the quantity of described valve attachment hole 23 is three, the edge of one of them valve attachment hole 23 also extends an accessory plate 231 that cross section is arc of projection, more stable when described accessory plate 231 can make to connect fit on the one hand, also can play on the other hand the effect of fool proof.In addition, wherein two the valve attachment holes 23 in described three valve attachment holes 23 can be arranged to circle, and another valve attachment hole 23 can be arranged to ellipse, and this setup is more stable in the time of can connecting fit more equally, and plays foolproof function.
Support frame as described above 30 is for matching with described valve 20.Support frame as described above body 31 is roughly circle.Support frame as described above body 31 has extended to form butting section 311.The first extension part 51 resilient abutment of described butting section 311 and described torque spring 50.
Described the second fastening structure comprises supporting frame fastening hole 33 and supporting frame attachment post 34.Support frame as described above fastening hole 33 is opened in support frame as described above body 31 center.Support frame as described above fastening hole 33 fastens mandrel 22 with described valve and is interlocked fixing.Particularly, the external diameter of the large end of the external diameter of described root 221 and described head 223 is all greater than the aperture of support frame as described above fastening hole 33.The aperture of the external diameter of described neck 222 and support frame as described above fastening hole 33 is suitable, described neck 222 and support frame as described above fastening hole 33 phase fits.Described head 223 passes support frame as described above fastening hole 33.In the present embodiment, the surrounding of support frame as described above fastening hole 33 also offers bar hole 301, and described bar hole 301 is connected with support frame as described above fastening hole 33.The quantity of described bar hole 301 can be one or more.Preferably, the quantity of described bar hole 301 is three or four, and is equidistantly distributed on the circumference of support frame as described above fastening hole 33.The head 223 that the setting of described bar hole 301 can be convenient to described valve fastening mandrel 22 is fastened through support frame as described above fastening hole 33.
Support frame as described above attachment post 34 is arranged on the edge of support frame as described above body 31 and is connected to a fixed with described valve attachment hole 23.Support frame as described above attachment post 34 arranges in circumference equal intervals around support frame as described above body 31.In the present embodiment, the quantity of support frame as described above attachment post 34 is three, and wherein two supporting frame attachment posts 34 are circular, and another supporting frame attachment post 34 is oval.
Support frame as described above joint 32 is in the shape of the letter V.Support frame as described above joint 32 comprises the first link arm 321 and the second link arm 322, and described the first link arm 321 and described the second link arm 322 extend to form from support frame as described above body 31.The butting section 311 of support frame as described above body 31 is between described the first link arm 321 and described the second link arm 322.
Support frame as described above joint 32 offers axis hole 302.The central axis of described axis hole 321 is vertical with the central axis of described valve opening 12.Particularly, described axis hole 302 is opened in described the first link arm 321 and described the second link arm 322 away from one end of support frame as described above body 31.Described the first link arm 321 is relative with the axis hole 302 on described the second link arm 322.
Described rotating shaft 40 is located in described axis hole 302 rotationally.In the wall portion 11 of described valve body 10, offer fixed hole 111.Described rotating shaft 40 passes the axis hole 302 on described the first link arm 321 and described the second link arm 322 and is fixed with described fixed hole 111, thereby makes described rotating shaft 40 be fixed to described valve body 10, and support frame as described above 30 can rotate around described rotating shaft 40.
Described torque spring 50 comprises the first extension 51, the second extension 52 and the helical spring section 53 between described the first extension 51 and the second extension 52.The aperture of described helical spring section 53 is slightly larger than the diameter of described rotating shaft 40.Described helical spring section 53 is set in described rotating shaft 40.Because described the first extension 51 resilient abutment are between the valve body 21 of described valve 20 and the supporting body 31 of support frame as described above 30, particularly, described the first extension 51 is resisted against between the valve body 21 and butting section 311 relative with described butting section 311, and described the second extension 52 resilient abutment are in described wall portion 11; Thereby, at the opening near outer valve 101 one end during to valve opening 12 interior filling liquid, the gravity of filling liquid or impact force action be mineralization pressure on valve 20, the first extension 51 that valve 20 overcomes torque spring 50 is applied to the elastic force on valve 20, valve 20 40 rotates in the counterclockwise direction around the shaft together with supporting frame 30, now valve 20 is opened, and liquid is annotated by valve 20.When liquid stops annotating, the pressure that filling liquid acts on valve 20 disappears, and the elastic force that the first extension 51 of torque spring 50 is applied on valve 20 40 is rotated along clockwise direction around the shaft valve 20 together with supporting frame 30.Now valve 20 is closed and is stoped liquid backflow, reaches the object of non-return.
Further, described safety check also can comprise seal washer 60.Described seal washer 60 is arranged between the step 13 and described valve 20 of described valve body 10.Now, on the circumference of described valve body 21, offer a plurality of the first tapped holes 211, on the circumference of described seal washer 60, offer a plurality of the second tapped holes 61.Described a plurality of the first tapped hole 211 is corresponding one by one with described a plurality of the second tapped holes 61.Described seal washer 60 is fixed to described valve 20 through described a plurality of the first tapped holes 211 and described a plurality of the second tapped hole 61 respectively by a plurality of screws.Described seal washer 60 can prevent leak of liquid or volatilization better.In the present embodiment, described seal washer 60 is stair-stepping ring spacer.
Safety check of the present invention by arranging rotating shaft on supporting frame, torque spring is set in rotating shaft, and utilize the first fastening structure and the second fastening structure that valve and supporting frame are fixed, make the first extension resilient abutment of torque spring between valve and supporting frame, the second extension resilient abutment is in the wall portion of described valve body, utilize torque spring to carry out the opening and closing of control valve, pressure drop lower (generally only having helical spring 1/4th) due to the structure generation of torque spring, therefore, make valve pressure drop low, during oiling, only need the just complete Open valve of energy of less pressure, and valve just can be closed when pressure almost disappears, thereby while effectively preventing from refueling, too much gasoline remains in valve opening (oil filling pipe), avoid waste.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a safety check, comprise valve body (10) and valve (20), the valve opening (12) that described valve body (10) comprises wall portion (11) and surrounded by described wall portion (11), described valve (20) is arranged in described valve opening (12), it is characterized in that: described safety check also comprises supporting frame (30), rotating shaft (40) and torque spring (50), described valve (20) comprises valve body (21) and is arranged on the first fastening structure on described valve body (21), support frame as described above (30) comprises supporting frame body (31), the second fastening structure and supporting frame joint (32), described the second fastening structure is arranged at support frame as described above body (31) above and is interlocked fixing with described the first fastening structure, support frame as described above joint (32) is arranged at a side of support frame as described above body (31), described rotating shaft (40) can be rotated around described rotating shaft (40) through support frame as described above joint (32) and support frame as described above joint (32), the wall portion (11) of described valve body (10) is fixed at the two ends of described rotating shaft (40), described torque spring (50) is set in described rotating shaft (40), described torque spring (50) comprises the first extension (51) and the second extension (52), described the first extension (51) resilient abutment is between the valve body (21) of described valve (20) and the supporting body (31) of support frame as described above (30), described the second extension (52) resilient abutment is in described wall portion (11).
2. safety check according to claim 1, it is characterized in that: described the first fastening structure comprises that valve fastens mandrel (22) and valve attachment hole (23), described valve fastens the center that mandrel (22) is arranged at described valve body (21), described valve attachment hole (23) is arranged at the periphery of described valve body (21), described the second fastening structure comprises supporting frame fastening hole (33) and supporting frame attachment post (34), support frame as described above fastening hole (33) is opened in the center of support frame as described above body (31) and fastens mandrel (22) with described valve and is interlocked fixing, support frame as described above attachment post (34) is arranged on the edge of support frame as described above body (31) and is connected to a fixed with described valve attachment hole (23).
3. safety check according to claim 2, it is characterized in that: described valve fastens mandrel (22) and comprises connected successively root (221), neck (222) and head (223), described root (221) and described neck (222) are cylindrical body, described head (223) is round platform, the external diameter of the large end of the external diameter of described root (221) and described head (223) is all greater than the external diameter of described neck (221), the external diameter of the large end of the external diameter of described root (221) and described head (223) is all greater than the aperture of support frame as described above fastening hole (33), described neck (222) and support frame as described above fastening hole (33) phase fit, described head (223) passes support frame as described above fastening hole (33).
4. safety check according to claim 1, is characterized in that: described valve attachment hole (23) fastens mandrel (22) around described valve and arranges in circumference equal intervals.
5. safety check according to claim 1, is characterized in that: support frame as described above body (31) has also extended to form butting section (311), described butting section (311) and described the first extension part (51) resilient abutment.
6. safety check according to claim 5, it is characterized in that: support frame as described above joint (32) is in the shape of the letter V, support frame as described above joint (32) comprises the first link arm (321) and the second link arm (322), described the first link arm (321) and described the second link arm (322) extend to form from support frame as described above body (31), and described butting section (311) are positioned between described the first link arm (321) and described the second link arm (322).
7. safety check according to claim 1, it is characterized in that: support frame as described above joint (32) offers axis hole (321), the central axis of described axis hole (321) is vertical with the central axis of described valve opening (12), and described rotating shaft (40) is located in described axis hole (321) rotationally.
8. safety check according to claim 1, it is characterized in that: described valve body (10) also comprises step (13), described step (13) is positioned at valve opening (12) and is arranged on described wall portion (11) upper, and described valve (20) is resisted against on described step (13).
9. safety check according to claim 8, is characterized in that: described safety check also comprises seal washer (60), and described seal washer (60) is arranged between the step (13) and described valve (20) of described valve body (10).
10. safety check according to claim 5, it is characterized in that: on the circumference of described valve body (21), offer a plurality of the first tapped holes (211), on the circumference of described seal washer (60), offer a plurality of the second tapped holes (61), described a plurality of the first tapped holes (211) are corresponding one by one with described a plurality of the second tapped holes (61), and described seal washer (60) is fixed to described valve (20) through described a plurality of the first tapped holes (211) and described a plurality of the second tapped holes (61) respectively by a plurality of screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738537.3A CN103672050A (en) | 2013-12-30 | 2013-12-30 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738537.3A CN103672050A (en) | 2013-12-30 | 2013-12-30 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103672050A true CN103672050A (en) | 2014-03-26 |
Family
ID=50310455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310738537.3A Pending CN103672050A (en) | 2013-12-30 | 2013-12-30 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103672050A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006273A (en) * | 2017-12-28 | 2018-05-08 | 上汽通用五菱汽车股份有限公司 | A kind of oiling check valve |
| CN109291788A (en) * | 2018-12-05 | 2019-02-01 | 戴胜汽车科技（苏州）有限公司 | Capless fuel filler lid easy to install |
| CN110143130A (en) * | 2019-06-03 | 2019-08-20 | 戴胜汽车科技（苏州）有限公司 | A kind of protecting against shock filler cap |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA653896A (en) * | 1962-12-11 | D. Keithahn Julian | Drill pipe float valves | |
| US4304255A (en) * | 1979-05-31 | 1981-12-08 | K-F Prince Valve, Inc. | Swing check valve |
| CA2467616A1 (en) * | 2003-05-23 | 2004-11-23 | Eaton Corporation | Flapper type fill tube check valve |
| EP1580059A1 (en) * | 2004-03-26 | 2005-09-28 | Stant Manufacturing Inc. | Fuel-transfer system |
| US20120211689A1 (en) * | 2010-09-24 | 2012-08-23 | Bostwick Christopher C | Inlet control valves for use with fuel delivery systems |
| US20120227264A1 (en) * | 2011-03-10 | 2012-09-13 | Stant Usa Corp. | Mount for inlet check valve |
| CN203718053U (en) * | 2013-12-30 | 2014-07-16 | 斯丹德汽车系统（苏州）有限公司 | Check valve |
-
2013
- 2013-12-30 CN CN201310738537.3A patent/CN103672050A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA653896A (en) * | 1962-12-11 | D. Keithahn Julian | Drill pipe float valves | |
| US4304255A (en) * | 1979-05-31 | 1981-12-08 | K-F Prince Valve, Inc. | Swing check valve |
| CA2467616A1 (en) * | 2003-05-23 | 2004-11-23 | Eaton Corporation | Flapper type fill tube check valve |
| EP1580059A1 (en) * | 2004-03-26 | 2005-09-28 | Stant Manufacturing Inc. | Fuel-transfer system |
| US20120211689A1 (en) * | 2010-09-24 | 2012-08-23 | Bostwick Christopher C | Inlet control valves for use with fuel delivery systems |
| US20120227264A1 (en) * | 2011-03-10 | 2012-09-13 | Stant Usa Corp. | Mount for inlet check valve |
| CN203718053U (en) * | 2013-12-30 | 2014-07-16 | 斯丹德汽车系统（苏州）有限公司 | Check valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006273A (en) * | 2017-12-28 | 2018-05-08 | 上汽通用五菱汽车股份有限公司 | A kind of oiling check valve |
| CN109291788A (en) * | 2018-12-05 | 2019-02-01 | 戴胜汽车科技（苏州）有限公司 | Capless fuel filler lid easy to install |
| CN110143130A (en) * | 2019-06-03 | 2019-08-20 | 戴胜汽车科技（苏州）有限公司 | A kind of protecting against shock filler cap |
| CN110143130B (en) * | 2019-06-03 | 2024-01-16 | 戴胜汽车科技（苏州）有限公司 | Anti-impact filler cap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103672050A (en) | Check valve | |
| US4986439A (en) | Cap for the filler neck of liquid containers | |
| ATE409139T1 (en) | LID-LESS LOCKABLE SOCKET CLOSURE FOR A FILLER NECK OF A TANK OF A MOTOR VEHICLE | |
| CN203718053U (en) | Check valve | |
| DE69611847T2 (en) | SEALING CAP AND FILLING CAP FOR A FUEL TANK | |
| JP2007196920A (en) | Gas fuel filling lid device of vehicle | |
| US9085452B2 (en) | Carbonated water manufacturing device | |
| CN202542049U (en) | Combined anti-fake short-neck bottle cover and anti-fake short-neck container | |
| CN204175066U (en) | A kind ofly prevent door handle and the automobile of opening car door lock when side impact | |
| CN206723573U (en) | Valve anti-disassembling mechanism and valve external member | |
| US1117741A (en) | Filler-pipe for automobile gasolene-tanks. | |
| CN202249386U (en) | Oil filling port cover for light bus | |
| CN209305346U (en) | Fuel oil box pouring orifice sealing device | |
| CN201592650U (en) | Oil filling pipe with built-in valve | |
| CN203255263U (en) | Turnover type mud guard device of liquid tank truck | |
| CN208247966U (en) | A kind of oil tank door preventing oil leak and volatilization | |
| CN210391335U (en) | Small door alarm device for automobile refueling | |
| CN109552413A (en) | Track rod, automotive suspension and automobile | |
| CN203957856U (en) | Fuel tank capable of preventing oil return and oil leakage | |
| CN216467334U (en) | Integral type does not have lid filler cap structure | |
| CN206351658U (en) | Automobile rearview mirror | |
| CN213809022U (en) | Oil filling pipe check valve, oil filling pipe and mold | |
| CN206416154U (en) | One kind is used to climb the intra-articular Wiring structure of wall dolly | |
| CN203651466U (en) | One-way valve for preventing oil return of automobile oil filling pipe | |
| DE50312066D1 (en) | Filler with an automatically closing closure for stationary or in-vehicle liquid tanks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |