CN209494651U - 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
- Publication number
- CN209494651U CN209494651U CN201920261913.7U CN201920261913U CN209494651U CN 209494651 U CN209494651 U CN 209494651U CN 201920261913 U CN201920261913 U CN 201920261913U CN 209494651 U CN209494651 U CN 209494651U
- Authority
- CN
- China
- Prior art keywords
- connector
- built
- oil return
- return pipe
- way valve
- 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.)
- Active
Links
Landscapes
- Check Valves (AREA)
Abstract
The utility model 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.The built-in one-way valve structures engine oil return pipe of the utility model, compact-sized, design is rationally, realize unidirectional transport of the oil return pipe to fuel oil, it 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 utility model relates to a kind of engine oil return pipes, more specifically, it relates to one-way valve structures built in a kind of
Engine 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.
Utility model content
The technical problems to be solved in the utility model is the above-mentioned deficiency for the prior art, provide it is a kind of it is compact-sized,
The reasonable built-in one-way valve structures engine oil return pipe of design, realizes unidirectional transport of the oil return pipe to fuel oil, effectively prevent so
After the problem of flowing backwards, reduce the failure rate of engine hard-to-start, have and occupy little space, is reliability and stability, convenient for disassembly and assembly
The characteristics of.
The technical solution adopted in the utility model is: a kind of engine oil return pipe of built-in one-way valve structures, including oil pipe
And connector, described oil pipe one end are equipped with the first connector communicated therewith, connect correspondingly, described connector one end is equipped with it
Second connector of logical hollow structure, the first connector grafting are mounted in the second connector, and described first connects
The check valve assembly that can prevent fuel flow returns is equipped in second connector of connector side, the check valve assembly is 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
The utility model compared with prior art, has the advantage that
1, the built-in one-way valve structures engine oil return pipe of the utility model, compact-sized, design rationally, by will be unidirectional
Be mounted in oil pipe built in valve arrangement, realize unidirectional transport of the oil return pipe to fuel oil, effectively prevent the problem of then flowing backwards with
And check valve the problem of being damaged because of scraping collision, reduce the failure rate of engine hard-to-start, have occupy little space, reliability and steady
Feature qualitative, convenient for disassembly and assembly.
2, the check valve assembly of the utility model is the structure of umbrella cover formula, thickness and soft or hard journey by control umbrella cover sealing plate
Degree realizes the pressure size that control oil circuit is opened, easy to control, applied to the unidirectional transport of fuel oil, fluid stopping better effect, together
When have the characteristics that easy for installation, long service life.
3, the utility model, convenient for connecting with fuel tank sebific duct, substantially increases connection by the way that ring head is arranged on connector
Reliability effectively prevent sebific duct to fall off；Simultaneously by the way that oil draining bolt was arranged on oil pipe, can be realized quickly and fuel dispenser
Connection is installed very convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial profile structure of the utility model；
Fig. 3 is the structural schematic diagram of valve seat in the utility model；
Fig. 4 is the schematic diagram of the section structure of the second connector in the utility model；
Fig. 5 is the structural schematic diagram of spool in the utility model.
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
Specific embodiment in reference to the accompanying drawing is described further the utility model.
Refering to fig. 1 shown in -5, a kind of engine oil return pipe of built-in one-way valve structures of the utility model, including oil pipe 1
With connector 2, the first connector 3 communicated therewith is equipped in 1 one end of oil pipe, the first connector 3 is hollow structure, with oil pipe 1
One end is fixedly connected, correspondingly, being equipped with the second connector 4 of the hollow structure communicated therewith, 2 grafting of connector in 2 one end of connector
It is fixed in 4 one end of the second connector, 3 grafting of the first connector is mounted in the second connector 4, is connected to connector 2 with oil pipe 1
And it is joined together to form pipeline, and interior be equipped with of the second connector 4 of 3 side of the first connector can prevent the unidirectional of fuel flow returns
Valve module, which is the structure of umbrella cover formula, specifically, the check valve assembly includes valve seat 7 and spool 8, wherein valve
Core 8 is made of inserted link 8a and flexible umbrella cover sealing plate 8b, and umbrella cover sealing plate 8b has planarea and arcwall face, and planarea exists
It can be bent to arcwall face direction after stress, valve seat 7 is mounted in the second connector 4, there is jack, jack periphery at 7 center of valve seat
There is oil-through hole, inserted link 8a is plugged at the center of valve seat 7, and fuel oil can circulate by oil-through hole, and umbrella cover sealing plate 8b is mounted on slotting
One end of bar 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 envelope
Lock is equipped with the special-shaped bulb 8c that can be locked at spool 8 in valve seat 7 on inserted link 8a, prevents 8 axial float of spool, while really
Protecting oil pressure can deform to umbrella cover sealing plate 8b extruding.The check valve assembly of the utility model is the structure of umbrella cover formula, is passed through
The thickness of control umbrella cover sealing plate and soft or hard degree realize the pressure size that control oil circuit is opened, easy to control, applied to fuel oil
Unidirectional transport, fluid stopping better effect, while having the characteristics that easy for installation, long service life.
The utility model in practical application, fuel oil by forming oil pressure in oil pipe 1, when pressure reaches certain value and big
When the deformation cracking pressure of umbrella cover sealing plate 8b, umbrella cover sealing plate 8b, which is opened, makes the pasta of crossing of itself and valve seat 7 have gap, thus real
Existing fuel feeding；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
The pasta of crossing of seat 7 is bonded again and closes fuel flow path, so that realizing prevents fuel oil from flowing backwards.The built-in check valve of the utility model
Structure engine oil return pipe, compact-sized, design rationally, by will be mounted in oil pipe built in one-way valve structures, realize back
Unidirectional transport of the oil pipe to fuel oil, the problem of effectivelying prevent the problem of then flowing backwards and check valve to damage because of scraping collision, reduce
The failure rate of engine 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.
Above-described is only preferred embodiments of the present invention, it should be pointed out that is come for those skilled in the art
It says, under the premise of not departing from the utility model structure, several modifications and improvements can also be made, these all will not influence this reality
With the effect and patent practicability of novel implementation.
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 |
|---|---|---|---|
| CN201920261913.7U CN209494651U (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 |
|---|---|---|---|
| CN201920261913.7U CN209494651U (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 |
|---|---|
| CN209494651U true CN209494651U (en) | 2019-10-15 |
Family
ID=68156774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920261913.7U Active CN209494651U (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) | CN209494651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736984A (en) * | 2019-03-01 | 2019-05-10 | 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 CN201920261913.7U patent/CN209494651U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736984A (en) * | 2019-03-01 | 2019-05-10 | 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209494651U (en) | A kind of engine oil return pipe of built-in one-way valve structures | |
| CN209179912U (en) | Engine fuel oil system and engine | |
| CN109736984A (en) | A kind of engine oil return pipe of built-in one-way valve structures | |
| CN201225208Y (en) | Gas nozzle for automobile | |
| CN102937063B (en) | Oil sprayer compress tightly screw cap and fixing method thereof | |
| CN215890270U (en) | Fuel injection structure of fuel pump | |
| CN200989477Y (en) | No-return valve | |
| CN205315181U (en) | Integrated form diesel engine high pressure common rail fuel injection high -pressure oil pump assembly for system | |
| CN201255062Y (en) | High-pressure co-rail injection pump for diesel engine | |
| CN208310938U (en) | Trackless single cylinder electric control fuel oil jet system | |
| CN214221375U (en) | Light-duty motion aircraft fuel system | |
| CN112031966A (en) | Throttle valve arrangement method and structure of engine air inlet pipeline | |
| CN210317553U (en) | Reciprocating double-oil-tank electric injection pump assembly | |
| CN221322565U (en) | Oil return pipe assembly of oil sprayer | |
| CN211573655U (en) | Universal engine carburetor for automobile | |
| CN207813800U (en) | A kind of eductor for fuel oil pump assembly | |
| CN215371164U (en) | Pressure stop valve | |
| CN217632741U (en) | Engine oil supply system and vehicle | |
| CN219139236U (en) | Integrated fuel oil return pipeline | |
| CN220792798U (en) | LCNG gas filling system | |
| CN220850745U (en) | Seal assembly of corrosion-resistant pump transmission shaft | |
| CN214533498U (en) | Novel plunger pump | |
| CN220118223U (en) | Oil extraction device applied to refitted vehicle | |
| CN209990565U (en) | Self-stretching returns oil pipe | |
| CN109184999A (en) | A kind of common-rail high-pressure pump component for Diesel Methanol dual fuel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |