CN220395874U - Oil return joint of diesel engine oil injector - Google Patents
Oil return joint of diesel engine oil injector Download PDFInfo
- Publication number
- CN220395874U CN220395874U CN202321789925.XU CN202321789925U CN220395874U CN 220395874 U CN220395874 U CN 220395874U CN 202321789925 U CN202321789925 U CN 202321789925U CN 220395874 U CN220395874 U CN 220395874U
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- oil return
- oil
- return joint
- joint
- pipe
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- 239000003921 oil Substances 0.000 title description 172
- 239000010710 diesel engine oil Substances 0.000 title description 3
- 239000007788 liquid Substances 0.000 claims description 35
- 238000012544 monitoring process Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 239000002283 diesel fuel Substances 0.000 abstract description 47
- 239000000446 fuel Substances 0.000 abstract description 19
- 230000009471 action Effects 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003405 preventing effect Effects 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010763 heavy fuel oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model relates to the technical field of fuel injectors and discloses a fuel return joint of a diesel engine, which comprises a fuel return joint, wherein a fuel return pipe is sleeved on the side wall of the fuel return joint, a baffle plate is slidably arranged between the fuel return pipe and the fuel return joint, a sliding plate is slidably arranged in the fuel return joint, a plurality of fuel outlet holes are formed in the side wall of the fuel return joint, and the inside of the fuel return joint is communicated with the fuel return pipe through the fuel outlet holes; according to the utility model, the oil return joint is connected to the oil return port of the oil sprayer, the oil return port returns oil, the residual diesel oil is used for pressing the sliding plate and the sliding plate to compress the spring due to the pressure in the cylinder, diesel oil flows into the oil return pipe through the oil outlet on the side wall of the oil return joint, the oil return pipe returns oil, and when the diesel oil returns, the spring resets the sliding plate under the action of the spring to block the oil outlet, so that the diesel oil cannot return through the oil return pipe, the occurrence of the condition of return is avoided, and the practicability of the device is improved.
Description
Technical Field
The utility model relates to the technical field of fuel injectors, in particular to a fuel return joint of a fuel injector of a diesel engine.
Background
Most automobiles now have oil return pipes, the fuel pump supplies oil to the engine, after forming certain pressure and normally supplying fuel nozzles for injecting oil, the residual fuel is returned to the oil tank through the oil return pipeline, and of course, the residual gasoline vapor collected by the carbon tank also returns to the oil tank through the oil return pipe, so that the residual oil can be returned to the oil tank, the pressure for discharging the gasoline can be achieved, and the oil consumption can be reduced.
The current chinese patent of publication No. CN213063815U discloses a sprayer oil return joint, including oil pipe, oil pipe surface left side welding is fixed with into oil joint, oil pipe's top welded fastening has an oil storage section of thick bamboo, oil storage section of thick bamboo's surface right side welded fastening has an oil return pipe, the oil return chamber has been seted up to oil return pipe's inside, oil return pipe's right-hand member welded fastening has flange, oil return pipe's surface has seted up the side groove, oil return pipe's surface and lie in the outside port sliding connection of side groove have outer gleitbretter, the lateral surface welded fastening of outer gleitbretter has one-way admission valve, the inside welded fastening of the inside surface of outer gleitbretter and lie in the side groove has the connecting block. The oil return joint of the oil sprayer is connected with an external pipeline respectively, and the oil return cavity can be cleaned rapidly through the cleaning device, so that the blockage of the oil return cavity caused by internal impurities is avoided.
However, the following disadvantages exist: the oil return joint is characterized in that no backflow preventing device is arranged between the oil return pipe and the oil sprayer, if a part of oil flows back to the oil sprayer through the oil return pipe, the oil return process is insufficient, a small part of oil remains in the oil sprayer, the oil consumption is increased, the oil remaining in the oil sprayer can influence the utilization rate of the fuel, and the oil return rate of the oil return pipe is low, so that the practicability is low.
Accordingly, there is a need to provide a diesel engine injector return fitting that addresses the above-identified issues.
Disclosure of Invention
The utility model aims to provide an oil return joint of a diesel engine oil injector, which adopts a sliding plate, a baffle plate and a liquid flow rate sensor and has the effect of preventing diesel oil from flowing back.
The technical aim of the utility model is realized by the following technical scheme: the utility model provides a diesel engine sprayer oil return joint, includes the oil return joint, the lateral wall cover of oil return joint is equipped with the oil return pipe, slidable mounting has the baffle between oil return pipe and the oil return joint, the inside slidable mounting of oil return joint has the slide, a plurality of oil outlet have been seted up to the lateral wall of oil return joint, the inside of oil return joint is linked together through oil outlet and oil return pipe, the inside wall fixed mounting who keeps away from slide one end of oil return joint has the support frame, the lateral wall fixed mounting of support frame has the spring, the one end and the slide fixed connection of spring, the slide passes through spring and support frame elastic connection, the lateral wall of oil return joint is provided with velocity of flow detection mechanism, the lateral wall fixed mounting of oil return joint has the motor, the output transmission of motor is connected with the screw rod, the screw rod runs through the lateral wall of baffle, screw rod and baffle threaded connection, motor and velocity of flow detection mechanism electric connection.
Through adopting above-mentioned technical scheme, with the oil return mouth that oil return joint is connected to the sprayer, the oil return mouth carries out the oil return, because the inside pressure of cylinder, with surplus diesel oil hydraulic slide, slide compression spring, diesel oil flows into the oil return pipe through the oil outlet of oil return joint lateral wall, returns the oil return pipe and returns the oil, finishes when diesel oil backward flow, under the effect of spring, the spring resets the slide, blocks the oil outlet, leads to diesel oil unable backward flow through the oil return pipe, has avoided the condition emergence of backward flow, has promoted the practicality of the device.
The utility model is further provided with: the flow rate detection mechanism comprises a liquid flow rate sensor, the liquid flow rate sensor is fixedly arranged at one end of the motor, the liquid flow rate sensor is electrically connected with the motor, a monitoring ring is sleeved on the outer side wall of the oil return joint, the monitoring ring penetrates through the inner wall of the oil return joint and is fixedly connected with the oil return joint, and the monitoring ring is electrically connected with the liquid flow rate sensor.
Through adopting above-mentioned technical scheme, monitoring ring and liquid flow rate sensor are prior art, its function is through the inside liquid that flows of monitoring ring, then with the signal transmission to liquid flow rate sensor, so not described in detail, liquid flow rate sensor's model is LSW-LWGY, if still have some diesel oil to take place backward flow, be set up the threshold value in the liquid flow rate sensor, when detecting the unusual condition of liquid flow rate, judge for backward flow, then liquid flow rate sensor control motor is rotatory, the motor drives the screw rod rotation, the baffle moves on the screw rod, remove to one side of oil outlet, then with the inside diesel oil separation of oil return pipe, prevent diesel oil through the oil outlet backward flow, this device is urgent backflow preventer.
The utility model is further provided with: and a sealing ring is fixedly arranged on the inner wall of one end, close to the motor, of the oil return joint.
Through adopting above-mentioned technical scheme, the sealing washer can increase the leakproofness between oil return joint and the oil return pipe, ensures the stability of connection, prevents diesel oil leakage.
The utility model is further provided with: the oil return joint is kept away from the one end fixed mounting of slide has the baffle, the baffle sets up in one side of support frame.
Through adopting above-mentioned technical scheme, the baffle seals the one end of oil return joint, prevents that the inside diesel oil of oil return pipe from getting into the one end that is close to the support frame through the oil return joint and producing the influence to the oil return work.
The utility model is further provided with: the inner wall rotation of returning oil pipe installs a plurality of pivots, and a plurality of the pivot uses the center of returning oil pipe as the axle and is annular array distribution, a plurality of the lateral wall of pivot is all fixed mounting has the spoiler, the spoiler is rotated with returning oil pipe through the pivot and is connected.
Through adopting above-mentioned technical scheme, this pivot is spacing pivot, can only be at limiting angle rotation promptly, and when diesel oil returned, the pivot drives the spoiler rotation, makes things convenient for diesel oil backward flow, but in case there is the backward flow condition to take place, the spoiler can block the diesel oil of a part backward flow because of the reason of spacing pivot, carries out the choked flow with the fluid of backward flow, has increased the effect of anti-reflux.
The utility model is further provided with: the inside of the oil return pipe is provided with a one-way valve, and the one-way valve is arranged on one side of the spoiler.
By adopting the technical scheme, the one-way valve can only enable the diesel oil to return oil in one way, and the diesel oil is prevented from flowing back in the oil return pipe.
In summary, the utility model has the following beneficial effects: according to the utility model, the oil return joint is connected to the oil return port of the oil sprayer, the oil return port returns oil, the residual diesel oil is used for pressing the sliding plate and the sliding plate to compress the spring due to the pressure in the cylinder, diesel oil flows into the oil return pipe through the oil outlet on the side wall of the oil return joint, the oil return pipe returns oil, the spring resets the sliding plate under the action of the spring after the diesel oil is completely returned, the oil outlet is blocked, the diesel oil cannot flow back through the oil return pipe, the occurrence of backflow is avoided, the practicability of the device is improved, if a small part of diesel oil is still reflowed, a threshold value is set in the liquid flow rate sensor, when the abnormal liquid flow rate is detected, the liquid flow rate sensor controls the motor to rotate, the motor drives the screw to rotate, the baffle plate moves on the screw, the diesel oil in the oil return pipe is blocked, and the diesel oil in the oil return pipe is prevented from flowing back through the oil outlet.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present utility model;
FIG. 2 is a schematic view of a three-dimensional structure from another perspective of the present utility model;
FIG. 3 is a schematic view of a three-dimensional structure of the baffle plate of the present utility model;
FIG. 4 is a schematic view of a three-dimensional structure of the oil return operation of the present utility model;
FIG. 5 is a schematic three-dimensional structure of the trigger liquid flow sensor of the present utility model;
fig. 6 is a schematic cross-sectional view of an internally installed check valve of the oil return pipe of the present utility model.
In the figure: 1. an oil return pipe; 2. an oil return joint; 3. a baffle plate; 4. a seal ring; 5. a slide plate; 6. a monitoring ring; 7. a liquid flow rate sensor; 8. a motor; 9. an oil outlet hole; 10. a screw; 11. a rotating shaft; 12. a spoiler; 13. a spring; 14. a support frame; 15. a baffle; 16. a one-way valve.
Description of the embodiments
The present utility model will be further described with reference to the drawings in the embodiments of the present utility model.
Referring to fig. 1 to 6, in an embodiment of the present utility model, an oil return joint of a diesel engine injector includes an oil return joint 2, a side wall of the oil return joint 2 is sleeved with an oil return pipe 1, a baffle plate 3 is slidably installed between the oil return pipe 1 and the oil return joint 2, a sliding plate 5 is slidably installed inside the oil return joint 2, a plurality of oil outlet holes 9 are formed in the side wall of the oil return joint 2, the inside of the oil return joint 2 is communicated with the oil return pipe 1 through the oil outlet holes 9, a support frame 14 is fixedly installed on an inner side wall of one end of the oil return joint 2 far away from the sliding plate 5, a spring 13 is fixedly installed on the side wall of the support frame 14, one end of the spring 13 is fixedly connected with the sliding plate 5, the sliding plate 5 is elastically connected with the support frame 14 through the spring 13, a flow velocity detection mechanism is arranged on an outer side wall of the oil return joint 2, a motor 8 is fixedly installed on an outer side wall of the oil return joint 2, an output end of the motor 8 is in transmission connection with a screw 10, the screw 10 penetrates through the side wall of the baffle plate 3, the screw 10 is in threaded connection with the baffle plate 3, and the motor 8 is electrically connected with the flow velocity detection mechanism; the oil return joint 2 is connected to the oil return port of the oil sprayer, the oil return port returns oil, the residual diesel oil is used for pressing the sliding plate 5 due to the pressure in the cylinder, the sliding plate 5 compresses the spring 13, diesel oil flows into the oil return pipe 1 through the oil outlet 9 on the side wall of the oil return joint 2, the oil return pipe 1 returns oil, when the diesel oil returns, the spring 13 resets the sliding plate 5 under the action of the spring 13, the oil outlet 9 is blocked, diesel oil cannot return through the oil return pipe 1, the occurrence of the condition of return is avoided, and the practicality of the device is improved.
In this embodiment, preferably, the flow rate detection mechanism includes a liquid flow rate sensor 7, where the liquid flow rate sensor 7 is fixedly installed at one end of the motor 8, the liquid flow rate sensor 7 is electrically connected with the motor 8, a monitoring ring 6 is sleeved on an outer side wall of the oil return joint 2, the monitoring ring 6 penetrates through an inner wall of the oil return joint 2 and is fixedly connected with the oil return joint 2, and the monitoring ring 6 is electrically connected with the liquid flow rate sensor 7; the monitoring ring 6 and the liquid flow rate sensor 7 are in the prior art, the functions of the monitoring ring are that liquid flowing through the inside of the monitoring ring 6 is monitored, then an electric signal is conducted to the liquid flow rate sensor 7, so that the model of the liquid flow rate sensor 7 is LSW-LWGY, if a small amount of diesel oil is refluxed, a threshold value is set in the liquid flow rate sensor 7, when the abnormal situation of the liquid flow rate is detected, the liquid flow rate sensor 7 controls the motor 8 to rotate, the motor 8 drives the screw 10 to rotate, the baffle plate 3 moves on the screw 10 and moves to one side of the oil outlet 9, diesel oil in the oil return pipe 1 is blocked, and the diesel oil is prevented from refluxing through the oil outlet 9, and the device is an emergency backflow prevention device.
In this embodiment, preferably, a sealing ring 4 is fixedly installed on the inner wall of the oil return joint 2 near one end of the motor 8; the sealing ring 4 can increase the tightness between the oil return joint 2 and the oil return pipe 1, ensure the stability of connection and prevent diesel oil leakage.
In this embodiment, preferably, a baffle 15 is fixedly installed at one end of the oil return joint 2 away from the sliding plate 5, and the baffle 15 is disposed at one side of the supporting frame 14; the baffle 15 seals the one end of oil return joint 2, prevents that the inside diesel oil of oil return pipe 1 from getting into the one end that is close to support frame 14 through oil return joint 2 from producing the influence to the oil return work.
In this embodiment, preferably, the inner wall of the oil return pipe 1 is rotatably provided with a plurality of rotating shafts 11, the plurality of rotating shafts 11 are distributed in an annular array with the center of the oil return pipe 1 as an axis, the side walls of the plurality of rotating shafts 11 are fixedly provided with spoilers 12, and the spoilers 12 are rotatably connected with the oil return pipe 1 through the rotating shafts 11; the rotating shaft 11 is a limiting rotating shaft 11, namely, the rotating shaft 11 can only rotate at a limiting angle, when diesel oil returns, the rotating shaft 11 drives the flow blocking plate 12 to rotate, so that diesel oil is convenient to flow back, but once a backflow condition occurs, the flow blocking plate 12 can block part of the backflow diesel oil due to the limiting rotating shaft 11, so that backflow oil is blocked, and the backflow preventing effect is improved.
In this embodiment, preferably, the oil return pipe 1 is provided with a check valve 16 inside, and the check valve 16 is disposed on one side of the spoiler 12; the one-way valve 16 can enable the diesel oil to return only in one way, and prevents the diesel oil from flowing back in the oil return pipe 1.
Working principle: the oil return joint 2 is connected to an oil return port of the oil sprayer, the oil return port returns oil, residual diesel oil is used for pressing the sliding plate 5 by virtue of pressure in the cylinder, the sliding plate 5 compresses the spring 13, diesel oil flows into the oil return pipe 1 through the oil outlet 9 on the side wall of the oil return joint 2, the oil return pipe 1 returns oil, after diesel oil flows back, the spring 13 resets the sliding plate 5 under the action of the spring 13, the oil outlet 9 is blocked, diesel oil cannot flow back through the oil return pipe 1, backflow is avoided, the practicability of the device is improved, if a small amount of diesel oil flows back, a threshold value is set in the liquid flow rate sensor 7, when the abnormal condition of the liquid flow rate is detected, the situation of backflow is judged, the liquid flow rate sensor 7 controls the motor 8 to rotate, the motor 8 drives the screw 10 to rotate, the baffle plate 3 moves on the screw 10 to one side of the oil outlet 9, diesel oil in the oil return pipe 1 is blocked, and the diesel oil is prevented from flowing back through the oil outlet 9.
The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.
Claims (6)
1. The utility model provides a diesel engine sprayer oil return joint, includes oil return joint (2), its characterized in that: the oil return joint is characterized in that an oil return pipe (1) is sleeved on the side wall of the oil return joint (2), a baffle plate (3) is slidably mounted between the oil return pipe (1) and the oil return joint (2), a sliding plate (5) is slidably mounted in the oil return joint (2), a plurality of oil outlet holes (9) are formed in the side wall of the oil return joint (2), the oil return joint (2) is communicated with the oil return pipe (1) through the oil outlet holes (9), a supporting frame (14) is fixedly mounted on the side wall of the oil return joint (2) far away from one end of the sliding plate (5), a spring (13) is fixedly mounted on the side wall of the supporting frame (14), one end of the spring (13) is fixedly connected with the sliding plate (5), the sliding plate (5) is elastically connected with the supporting frame (14) through the spring (13), a flow speed detection mechanism is arranged on the outer side wall of the oil return joint (2), a screw (10) is in transmission connection with the output end of the motor (8), and the screw (10) penetrates through the side wall of the baffle plate (3) and is connected with the screw thread (3).
2. A diesel engine injector oil return joint as set forth in claim 1 wherein: the flow rate detection mechanism comprises a liquid flow rate sensor (7), the liquid flow rate sensor (7) is fixedly arranged at one end of a motor (8), the liquid flow rate sensor (7) is electrically connected with the motor (8), a monitoring ring (6) is sleeved on the outer side wall of the oil return joint (2), the monitoring ring (6) penetrates through the inner wall of the oil return joint (2) and is fixedly connected with the oil return joint (2), and the monitoring ring (6) is electrically connected with the liquid flow rate sensor (7).
3. A diesel engine injector oil return joint as set forth in claim 1 wherein: the inner wall of the oil return joint (2) close to one end of the motor (8) is fixedly provided with a sealing ring (4).
4. A diesel engine injector oil return joint as set forth in claim 1 wherein: the oil return joint (2) is kept away from the one end fixed mounting of slide (5) and has baffle (15), baffle (15) set up in one side of support frame (14).
5. A diesel engine injector oil return joint as set forth in claim 1 wherein: the inner wall rotation of returning oil pipe (1) is installed a plurality of pivots (11), and a plurality of pivot (11) are the annular array distribution with the center of returning oil pipe (1) as the axle, a plurality of the lateral wall of pivot (11) is all fixed mounting has spoiler (12), spoiler (12) are connected with returning oil pipe (1) rotation through pivot (11).
6. A diesel engine injector oil return joint as set forth in claim 1 wherein: the inside of the oil return pipe (1) is provided with a one-way valve (16), and the one-way valve (16) is arranged on one side of the spoiler (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321789925.XU CN220395874U (en) | 2023-07-10 | 2023-07-10 | Oil return joint of diesel engine oil injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321789925.XU CN220395874U (en) | 2023-07-10 | 2023-07-10 | Oil return joint of diesel engine oil injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220395874U true CN220395874U (en) | 2024-01-26 |
Family
ID=89609792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321789925.XU Active CN220395874U (en) | 2023-07-10 | 2023-07-10 | Oil return joint of diesel engine oil injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220395874U (en) |
-
2023
- 2023-07-10 CN CN202321789925.XU patent/CN220395874U/en active Active
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