CN109736984A - A kind of engine oil return pipe of built-in one-way valve structures - Google Patents
A kind of engine oil return pipe of built-in one-way valve structures Download PDFInfo
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- CN109736984A CN109736984A CN201910155747.7A CN201910155747A CN109736984A CN 109736984 A CN109736984 A CN 109736984A CN 201910155747 A CN201910155747 A CN 201910155747A CN 109736984 A CN109736984 A CN 109736984A
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- connector
- built
- oil return
- return pipe
- way valve
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Abstract
The invention discloses a kind of engine oil return pipes of built-in one-way valve structures, including oil pipe and connector, described oil pipe one end is equipped with the first connector communicated therewith, accordingly, described connector one end is equipped with the second connector of the hollow structure communicated therewith, the first connector grafting is mounted in the second connector, and the check valve assembly that can prevent fuel flow returns is equipped in the second connector of first connector side, and the check valve assembly is the structure of umbrella cover formula.Built-in one-way valve structures engine oil return pipe of the invention, compact-sized, design rationally, realizes unidirectional transport of the oil return pipe to fuel oil, effectively prevent the problem of then flowing backwards, the failure rate for reducing engine hard-to-start has the characteristics that occupy little space, is reliability and stability, convenient for disassembly and assembly.
Description
Technical field
The present invention relates to a kind of engine oil return pipes, more specifically, it relates to which a kind of built-in one-way valve structures are started
Machine oil return pipe.
Background technique
The main function of engine oil return pipe is in fuel oil oil pump feed to engine, in addition to bio-occlusion fuel nozzle oil spout
Afterwards, remaining fuel oil is back to fuel tank or diesel fuel filter by oil return pipe, plays and mediates fuel pressure and reduction oil consumption
Effect.Once burning is insufficient in practical application, oil return blockage, will cause engine idling due to oil pressure is excessively high excessively high
Or even be short of power, oil consumption increase the problem of.Therefore oil return pipe is to guaranteeing that engine work plays an important role.
Existing engine oil return pipe is mainly connect with fuel dispenser, and extra diesel oil is back to by oil return pipe
Fuel tank or diesel fuel filter.But during the work time due to engine, there are intake advance angles and exhaust retard angle, cause back
Mix air in oil pipe line, and there is refluence phenomenon in pressure instability timing in aeriferous diesel oil, to cause in fuel injector
Diesel oil enters air, finally results in engine and the failure of hard-to-start occurs.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to the above-mentioned deficiency of the prior art, a kind of compact-sized, design is provided
Reasonable built-in one-way valve structures engine oil return pipe, realizes unidirectional transport of the oil return pipe to fuel oil, effectively prevent then falling
The problem of stream, reduce engine hard-to-start failure rate, have occupy little space, reliability and stability, spy convenient for disassembly and assembly
Point.
The technical solution adopted by the present invention is that: a kind of engine oil return pipe of built-in one-way valve structures, including oil pipe and connect
Head, described oil pipe one end be equipped with the first connector for communicating therewith, correspondingly, described connector one end is equipped with and communicates therewith
Second connector of hollow structure, the first connector grafting is mounted in the second connector, and first connector
The check valve assembly that can prevent fuel flow returns is equipped in second connector of side, the check valve assembly is the knot of umbrella cover formula
Structure.
As a further improvement, first connector is equipped with external screw thread, correspondingly, second connector is set
There is internal screw thread, first connector is screwed on by screw thread to be mounted in the second connector.
Further, seal washer, first connection are equipped between first connector and the second connector
Head periphery is equipped with the supported flange that can compress seal washer.
Further, the check valve assembly includes valve seat and spool, and the spool is by inserted link and flexible
Umbrella cover sealing plate is constituted, and the valve seat is mounted in the second connector, and the inserted link is plugged at the center of valve seat, described
Umbrella cover sealing plate is mounted on one end of inserted link, and the planarea of the umbrella cover sealing plate is bonded with the pasta of crossing of valve seat, the inserted link
It is equipped with the special-shaped bulb that spool can be locked in valve seat.
Further, the side of the nearly umbrella cover sealing plate of the special-shaped ball head rest is equipped with the first guide surface, and the abnormity bulb is remote
Side from umbrella cover sealing plate is equipped with the second guide surface, and the gradient of second guide surface is greater than the gradient of the first guide surface.
Further, the valve seat side is equipped with first annular top plate, correspondingly, the valve seat other side is equipped with the
Second ring top plate offers multiple notches, and second annular on the first annular top plate and the second annular roof plate
Top plate periphery is equipped with multiple wedge-shaped jacking blocks.
Further, the accommodating chamber for installing valve seat, the side of the accommodating chamber are equipped in second connector
End face is equipped with the limit shoulder cooperated with wedge-shaped jacking block.
Further, sealing ring is additionally provided between the valve seat and the second connector.
Further, the connector other end is additionally provided with ring head.
Further, the oil pipe other end was additionally provided with oil draining bolt.
Beneficial effect
Compared with prior art, the present invention having the advantage that
1, built-in one-way valve structures engine oil return pipe of the invention, compact-sized, design rationally, by by check valve knot
It is mounted in oil pipe built in structure, realizes unidirectional transport of the oil return pipe to fuel oil, effectively prevent the problem of then flowing backwards and list
The problem of damaging to valve because of scraping collision reduces the failure rate of engine hard-to-start, have occupy little space, reliability and stabilization
Property, feature convenient for disassembly and assembly.
2, check valve assembly of the invention is the structure of umbrella cover formula, thickness and soft or hard degree by control umbrella cover sealing plate,
Realize the pressure size that control oil circuit is opened, it is easy to control, applied to the unidirectional transport of fuel oil, fluid stopping better effect, simultaneously
Has the characteristics that easy for installation, long service life.
3, the present invention on connector by being arranged ring head, and convenient for connecting with fuel tank sebific duct, it is reliable to substantially increase connection
Property, it effectively prevent sebific duct to fall off；Simultaneously by the way that oil draining bolt was arranged on oil pipe, it can be realized and quickly connect with fuel dispenser
It connects, installs very convenient.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is partial profile structure of the invention；
Fig. 3 is the structural schematic diagram of valve seat in the present invention；
Fig. 4 is the schematic diagram of the section structure of the second connector in the present invention；
Fig. 5 is the structural schematic diagram of spool in the present invention.
Wherein: 1- oil pipe, 2- connector, the first connector of 3-, the second connector of 4-, 5- seal washer, 6- supported flange, 7-
It is first annular that valve seat, 8- spool, 9- sealing ring, 10- ring head, 11- cross oil draining bolt, 4a- accommodating chamber, 4b- limit shoulder, 7a-
Top plate, the second annular roof plate of 7b-, 7c- notch, 7d- wedge shape jacking block, 8a- inserted link, 8b- umbrella cover sealing plate, 8c- abnormity bulb, 8d-
First guide surface, the second guide surface of 8e-.
Specific embodiment
The present invention is described further for specific embodiment in reference to the accompanying drawing.
Refering to fig. 1 shown in -5, a kind of engine oil return pipe of built-in one-way valve structures of the invention, including oil pipe 1 and connect
First 2, the first connector 3 communicated therewith is equipped in 1 one end of oil pipe, the first connector 3 is hollow structure, with 1 one end of oil pipe
It is fixedly connected, correspondingly, being equipped with the second connector 4 of the hollow structure communicated therewith in 2 one end of connector, connector 2 is plugged and fixed
In 4 one end of the second connector, 3 grafting of the first connector is mounted in the second connector 4, and connector 2 is made to be connected to and connect with oil pipe 1
It is connected together to form pipeline, and is equipped with the unidirectional valve group that can prevent fuel flow returns in the second connector 4 of 3 side of the first connector
Part, which is the structure of umbrella cover formula, specifically, the check valve assembly includes valve seat 7 and spool 8, wherein spool 8
Be made of inserted link 8a and flexible umbrella cover sealing plate 8b, umbrella cover sealing plate 8b have planarea and arcwall face, planarea by
It can be bent to arcwall face direction after power, valve seat 7 is mounted in the second connector 4, is had jack at 7 center of valve seat, is with outside jack
Oil-through hole, inserted link 8a are plugged at the center of valve seat 7, and fuel oil can be circulated by oil-through hole, and umbrella cover sealing plate 8b is mounted on inserted link
One end of 8a, and the planarea of umbrella cover sealing plate 8b is bonded with the pasta of crossing of valve seat 7, and oil-through hole is covered, and realizes fuel oil block,
It is equipped with the special-shaped bulb 8c that spool 8 can be locked in valve seat 7 on inserted link 8a, prevents 8 axial float of spool, while ensuring oil
Pressure energy is enough to deform to umbrella cover sealing plate 8b extruding.Check valve assembly of the invention is the structure of umbrella cover formula, by controlling umbrella cover
The thickness of sealing plate and soft or hard degree realize the pressure size that control oil circuit is opened, easy to control, the unidirectional fortune applied to fuel oil
It is defeated, fluid stopping better effect, while having the characteristics that easy for installation, long service life.
The present invention in practical application, fuel oil by forming oil pressure in oil pipe 1, when pressure reach certain value and be greater than umbrella
When the deformation cracking pressure of face sealing plate 8b, umbrella cover sealing plate 8b, which is opened, makes the pasta of crossing of itself and valve seat 7 have gap, to realize confession
Oil；When fuel oil does not re-supply, umbrella cover sealing plate 8b resets under the elastic deformation force's effect of itself, makes its planarea and valve seat 7
Cross pasta be bonded again and close fuel flow path, thus realize prevent fuel oil from flowing backwards.Built-in one-way valve structures hair of the invention
Motivation oil return pipe, compact-sized, design rationally, by will be mounted in oil pipe built in one-way valve structures, realize oil return pipe pair
The unidirectional transport of fuel oil, the problem of effectivelying prevent the problem of then flowing backwards and check valve to damage because of scraping collision, reduce engine
The failure rate of hard-to-start has the characteristics that occupy little space, is reliability and stability, convenient for disassembly and assembly.
Preferably, it is equipped with external screw thread in the first connector 3, correspondingly, being equipped with internal screw thread in the second connector 4, first connects
Connector 3 is screwed on by screw thread to be mounted in the second connector 4, convenient for the connection of the two, realizes that connector 2 is quickly connect with oil pipe 1.
Seal washer 5 is equipped between the first connector 3 and the second connector 4, being equipped in 3 periphery of the first connector can be by seal washer
5 supported flanges 6 compressed, during being screwed on, supported flange 6 applies torque and compresses for the first connector 3 and the second connector 4
Seal washer 5, to achieve the purpose that seal oil pipe 1 and connector 2.It is equipped in special-shaped bulb 8c close to the side of umbrella cover sealing plate 8b
First guide surface 8d detaches valve seat 7 convenient for spool 8, is equipped with second far from the side of umbrella cover sealing plate 8b in special-shaped bulb 8c and leads
It to face 8e, is inserted into valve seat 7 convenient for spool 8, also, the gradient of the second guide surface 8e is greater than the gradient of the first guide surface 8d, the
The axial length of two guide surface 8e is greater than the first guide surface 8d, and spool 8 is made to be easily inserted valve seat 7 and be difficult to, and improves spool 8
It is easy to disassemble while connection reliability.It is equipped with first annular top plate 7a in 7 side of valve seat, correspondingly, 7 other side of valve seat is set
Have the second annular roof plate 7b, first annular top plate 7a and the second annular roof plate 7b be along the axial raised hollow ring flat-plate of valve seat 7,
Wherein, first annular top plate 7a provides Deformation Activities space for umbrella cover sealing plate 8b, and the second annular slab 7b can be with the first connector 3
Contact, is held out against valve seat 7 in accommodating chamber 4a by the first connector 3, in first annular top plate 7a and the second annular roof plate 7b
On offer multiple notch 7c, on the one hand alleviate the weight of valve seat 7, on the other hand reduce valve seat 7 and the second connector 4 it
Between frictional force, be easily installed, and be equipped with multiple wedge-shaped jacking block 7d in the second periphery annular roof plate 7b, in the second connector 4
Equipped with the accommodating chamber 4a for installing valve seat 7, the limiting stand cooperated with wedge-shaped jacking block 7d is equipped in a side end face of accommodating chamber 4a
Shoulder 4b, wedge-shaped jacking block 7d, limit shoulder 4b and the second annular slab 7b cooperation, to limit 7 axial float of valve seat.In valve seat
7 and second are additionally provided with sealing ring 9 between connector 4, play the role of seal valve seat 7 and the second connector 4.It is another in connector 2
End is additionally provided with ring head 10, convenient for connecting with fuel tank sebific duct, substantially increases connection reliability, sebific duct is effectively prevent to fall off.?
1 other end of oil pipe was additionally provided with oil draining bolt 11, can be realized and quickly connect with fuel dispenser, installed very convenient.
What has been described above is only a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art,
Without departing from the structure of the invention, several modifications and improvements can also be made, these all will not influence implementation of the present invention
Effect and patent practicability.
Claims (10)
1. a kind of engine oil return pipe of built-in one-way valve structures, including oil pipe (1) and connector (2), which is characterized in that described
Oil pipe (1) one end is equipped with the first connector (3) for communicating therewith, correspondingly, described connector (2) one end is equipped with and to communicate therewith
The second connector (4) of hollow structure, described the first connector (3) grafting are mounted in the second connector (4), and described the
The check valve assembly that can prevent fuel flow returns, the unidirectional valve group are equipped in second connector (4) of one connector (3) side
Part is the structure of umbrella cover formula.
2. a kind of engine oil return pipe of built-in one-way valve structures according to claim 1, which is characterized in that described the
One connector (3) is equipped with external screw thread, correspondingly, second connector (4) is equipped with internal screw thread, first connector
(3) it is screwed on and is mounted in the second connector (4) by screw thread.
3. a kind of engine oil return pipe of built-in one-way valve structures according to claim 1, which is characterized in that described the
Seal washer (5) are equipped between one connector (3) and the second connector (4), the first connector (3) periphery is equipped with and can incite somebody to action
The supported flange (6) that seal washer (5) compresses.
4. a kind of engine oil return pipe of built-in one-way valve structures according to claim 1 or 2 or 3, which is characterized in that institute
The check valve assembly stated includes valve seat (7) and spool (8), and the spool (8) is sealed by inserted link (8a) and flexible umbrella cover
Plate (8b) is constituted, and the valve seat (7) is mounted in the second connector (4), and the inserted link (8a) is plugged in valve seat (7)
At the heart, the umbrella cover sealing plate (8b) is mounted on one end of inserted link (8a), and the planarea and valve seat of the umbrella cover sealing plate (8b)
(7) pasta of crossing is bonded, and the inserted link (8a) is equipped with the special-shaped bulb (8c) that can be locked at spool (8) in valve seat (7).
5. a kind of engine oil return pipe of built-in one-way valve structures according to claim 4, which is characterized in that the abnormity
Bulb (8c) is equipped with the first guide surface (8d) close to the side of umbrella cover sealing plate (8b), and the abnormity bulb (8c) is far from umbrella cover sealing plate
The side of (8b) is equipped with the second guide surface (8e), and the gradient of second guide surface (8e) is oblique greater than the first guide surface (8d)
Degree.
6. a kind of engine oil return pipe of built-in one-way valve structures according to claim 4, which is characterized in that the valve
Seat (7) side is equipped with first annular top plate (7a), correspondingly, valve seat (7) other side is equipped with the second annular roof plate (7b),
It is offered multiple notches (7c) on the first annular top plate (7a) and the second annular roof plate (7b), and second annular
Top plate (7b) periphery is equipped with multiple wedge-shaped jacking blocks (7d).
7. a kind of engine oil return pipe of built-in one-way valve structures according to claim 6, which is characterized in that described the
The accommodating chamber (4a) for installing valve seat (7) is equipped in two connectors (4), a side end face of the accommodating chamber (4a) is equipped with and wedge
The limit shoulder (4b) of shape jacking block (7d) cooperation.
8. a kind of engine oil return pipe of built-in one-way valve structures according to claim 4, which is characterized in that the valve
Sealing ring (9) are additionally provided between seat (7) and the second connector (4).
9. a kind of engine oil return pipe of built-in one-way valve structures according to claim 1, which is characterized in that described connects
Head (2) other end is additionally provided with ring head (10).
10. a kind of engine oil return pipe of built-in one-way valve structures according to claim 1, which is characterized in that described
Oil pipe (1) other end was additionally provided with oil draining bolt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910155747.7A CN109736984A (en) | 2019-03-01 | 2019-03-01 | A kind of engine oil return pipe of built-in one-way valve structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910155747.7A CN109736984A (en) | 2019-03-01 | 2019-03-01 | A kind of engine oil return pipe of built-in one-way valve structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109736984A true CN109736984A (en) | 2019-05-10 |
Family
ID=66368957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910155747.7A Pending CN109736984A (en) | 2019-03-01 | 2019-03-01 | A kind of engine oil return pipe of built-in one-way valve structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109736984A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397529A (en) * | 2019-08-14 | 2019-11-01 | 广西玉柴机器股份有限公司 | The fuel dispenser modular construction of engine embedded one-way valve structures |
| CN113266499A (en) * | 2021-06-02 | 2021-08-17 | 北京汽车集团越野车有限公司 | Car check valve and car |
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| US20050121105A1 (en) * | 2003-11-26 | 2005-06-09 | Kenichiro Kaneko | Tube connector for fuel tank and manufacturing method thereof |
| CN201407393Y (en) * | 2009-04-02 | 2010-02-17 | 浙江鸿森机械有限公司 | Check valve |
| CN202165193U (en) * | 2011-06-30 | 2012-03-14 | 天津雷沃动力股份有限公司 | Low pressure oil pipe structure on engine |
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| CN203797063U (en) * | 2013-12-10 | 2014-08-27 | 中国航天科技集团公司第六研究院第十一研究所 | Miniature high-temperature gas cartridge-type one-way stop valve |
| CN207437852U (en) * | 2017-08-30 | 2018-06-01 | 厦门坤锦电子科技有限公司 | A kind of check valve and the minisize fluid pump for including it |
| CN209494651U (en) * | 2019-03-01 | 2019-10-15 | 广西玉柴机器股份有限公司 | A kind of engine oil return pipe of built-in one-way valve structures |
-
2019
- 2019-03-01 CN CN201910155747.7A patent/CN109736984A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050121105A1 (en) * | 2003-11-26 | 2005-06-09 | Kenichiro Kaneko | Tube connector for fuel tank and manufacturing method thereof |
| CN201407393Y (en) * | 2009-04-02 | 2010-02-17 | 浙江鸿森机械有限公司 | Check valve |
| CN202165193U (en) * | 2011-06-30 | 2012-03-14 | 天津雷沃动力股份有限公司 | Low pressure oil pipe structure on engine |
| CN203362257U (en) * | 2013-07-03 | 2013-12-25 | 安徽江淮汽车股份有限公司 | Gravity type one-way valve and supercharged and inter-cooled gasoline engine ventilation system |
| CN203797063U (en) * | 2013-12-10 | 2014-08-27 | 中国航天科技集团公司第六研究院第十一研究所 | Miniature high-temperature gas cartridge-type one-way stop valve |
| CN207437852U (en) * | 2017-08-30 | 2018-06-01 | 厦门坤锦电子科技有限公司 | A kind of check valve and the minisize fluid pump for including it |
| CN209494651U (en) * | 2019-03-01 | 2019-10-15 | 广西玉柴机器股份有限公司 | A kind of engine oil return pipe of built-in one-way valve structures |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397529A (en) * | 2019-08-14 | 2019-11-01 | 广西玉柴机器股份有限公司 | The fuel dispenser modular construction of engine embedded one-way valve structures |
| CN113266499A (en) * | 2021-06-02 | 2021-08-17 | 北京汽车集团越野车有限公司 | Car check valve and car |
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Application publication date: 20190510 |