CN215000086U - Integrated oil return pipe of diesel engine - Google Patents

Abstract

The application belongs to the technical field of return oil pipe, discloses a diesel engine integrated form returns oil pipe, be responsible for and return oil branch pipe including the oil return, return oil branch pipe and return oil are responsible for fixed welding, along the annular inner wall of return oil branch pipe has been seted up and has been accomodate the groove, the inboard of accomodating the groove is provided with the rubber sleeve, the movable tube is worn to be equipped with by the inboard of rubber sleeve, the movable tube top extends to the outside of return oil branch pipe, just two tip that the top of movable tube and return oil were responsible for all are provided with the connecting piece, the base reason of rubber sleeve and the bottom sealing connection of movable tube, just the top edge of rubber sleeve and the upside inner wall sealing connection who accomodates the groove. The pipeline connection device has the advantages that a plurality of pipelines can be integrated into a whole, the structure of the pipelines is simplified, the flexibility of pipeline connection is enhanced, and the pipeline connection device is convenient to install.

Description

Integrated oil return pipe of diesel engine

Technical Field

The application relates to return oil pipe technical field, more specifically says, relates to a diesel engine integrated form returns oil pipe.

Background

At present, a fuel supply system of a diesel engine is generally provided with a plurality of oil return pipelines, fuel is supplied to the engine by a fuel pump, certain pressure is formed, except for the normal supply of a fuel nozzle, residual fuel is sent back to a fuel tank through the oil return pipelines, and redundant gasoline steam collected by a carbon tank is also conveyed to the fuel tank through an oil return pipe, so that the pressure of gasoline can be discharged, and the fuel consumption can be reduced.

However, the existing oil return pipe for the diesel engine has certain limitations, which are particularly characterized in that the oil return pipe lacks a function of integrating a plurality of pipelines into a whole, is inconvenient to install, and needs to be further improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the application provides a diesel engine integrated form oil return pipe.

The application provides a diesel engine integrated form returns oil pipe adopts following technical scheme:

the utility model provides a diesel engine integrated form returns oil pipe, is responsible for and return oil branch pipe including the oil return, return oil branch pipe is responsible for fixed welding with the oil return, along the annular inner wall of return oil branch pipe has been seted up and has been accomodate the groove, the inboard of accomodating the groove is provided with the rubber sleeve, the movable tube is worn to be equipped with by the inboard of rubber sleeve, the movable tube top extends to the outside of return oil branch pipe, just the top of movable tube and two tip of return oil person in charge all are provided with the connecting piece, the bottom reason of rubber sleeve and the bottom sealing connection of movable tube, just the top edge of rubber sleeve and the upside inner wall sealing connection who accomodates the groove.

Through above-mentioned technical scheme, will return oil pipe and install the in-process in the diesel engine, can follow the backflow branch pipe with the movable tube and pull out to make the rubber sleeve stretch out the backflow branch pipe, so can prolong the holistic length of movable tube and backflow branch pipe according to the needs of condition, so that install the movable tube, and because the rubber sleeve can be crooked, so flexibility when also can strengthening the installation of movable tube.

Further, the upper end of oil return branch pipe is provided with the depressed part, depressed part department screw thread has cup jointed the tighrening ring, the movable pipe is worn through the tighrening ring to be connected with the tighrening ring rotation.

Through above-mentioned technical scheme, the tighrening ring can be fixed the movable tube.

Further, the rubber sleeve is nitrile rubber.

Through the technical scheme, the oil resistance and the heat resistance of the rubber sleeve can be enhanced.

Furthermore, the oil return main pipe is provided with corrugated pipes at positions close to the two end parts.

Through above-mentioned technical scheme for the end of oil return main pipe can be crooked.

Further, the connecting piece includes flange piece and sealing ring, flange piece and sealing ring fixed weld, the sealing ring cover is located on the body that corresponds to be connected with the body rotation.

Through above-mentioned technical scheme, flexibility when can further strengthen the body and connect.

Furthermore, a valve is fixedly installed at the position of the pipe body, where the movable pipe extends to the outside of the oil return branch pipe.

In summary, the present application includes at least one of the following advantageous technical effects: the pipeline connection device has the advantages that a plurality of pipelines can be integrated into a whole, the structure of the pipelines is simplified, the flexibility of pipeline connection is enhanced, and the pipeline connection device is convenient to install.

Drawings

FIG. 1 is a schematic structural diagram of an integrated oil return pipe of a diesel engine;

FIG. 2 is a schematic view of a partial cross-sectional structure of the present application;

fig. 3 is an enlarged view of the area a in fig. 2.

The reference numbers in the figures illustrate: 1. an oil return main pipe; 2. an oil return branch pipe; 3. a bellows; 4. a flange sheet; 5. a seal ring; 6. a movable tube; 7. a valve; 8. a fastening ring; 9. a receiving groove; 10. a rubber sleeve; 11. a recessed portion.

Detailed Description

The technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by those of ordinary skill in the art without any inventive work based on the embodiments in the present application belong to the protection scope of the present application.

In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example (b):

the present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses an integrated oil return pipe of a diesel engine, which comprises an oil return main pipe 1 and an oil return branch pipe 2, wherein the oil return branch pipe 2 is fixedly welded with the oil return main pipe 1, an accommodating groove 9 is formed along the annular inner wall of the oil return branch pipe 2, a rubber sleeve 10 is arranged on the inner side of the accommodating groove 9, in order to ensure that the rubber sleeve 10 has enough oil resistance and heat resistance, the rubber sleeve 10 is made of nitrile rubber, a movable pipe 6 is arranged on the inner side of the rubber sleeve 10 in a penetrating manner, the top end of the movable pipe 6 extends to the outer part of the oil return branch pipe 2, the top end of the movable pipe 6 and the two end edges of the oil return main pipe 1 are both provided with connecting pieces, the bottom end of the rubber sleeve 10 is hermetically connected with the bottom end of the movable pipe 6, the top edge of the rubber sleeve 10 is hermetically connected with the upper inner wall of the accommodating groove 9, when the movable pipe 6 is pulled out from the inner part of the oil return branch pipe 2, the rubber sleeve 10 can be rolled up along with the outward movement of the movable pipe 6, to maintain the tightness between the movable pipe 6 and the return branch pipe 2.

Referring to fig. 2 and 3, more specifically, in order to fix the movable pipe 6, a recessed portion 11 is disposed at an upper end of the oil return branch pipe 2, a fastening ring 8 is sleeved at the recessed portion 11 through a thread, and the movable pipe 6 passes through the fastening ring 8 and is rotatably connected with the fastening ring 8, so that after the movable pipe 6 is inserted into the oil return branch pipe 2, an installer can drive the movable pipe to be in threaded connection with the recessed portion 11 by rotating the fastening ring 8, thereby achieving the purpose of fixing the movable pipe 6 inside the oil return branch pipe 2, and it should be noted that, in order to increase a friction coefficient of the fastening ring 8 and to play a role of anti-skidding in a rotating process, anti-skidding lines are disposed on a surface of the fastening ring 8; in order to conveniently connect the end parts of the oil return main pipe 1 in the installation process, the corrugated pipes 3 are arranged at the positions, close to the two end parts, of the oil return main pipe 1, and the corrugated pipes 3 can be bent, so that the flexibility of the oil return main pipe 1 in installation is improved;

in order to further enhance the flexibility of the oil return main pipe 1 and the movable pipe 6 during installation, the connecting piece comprises a flange piece 4 and a sealing ring 5, the flange piece 4 and the sealing ring 5 are fixedly welded, and the sealing ring 5 is sleeved on the corresponding pipe body and is rotatably connected with the pipe body, so that the flange piece 4 and the sealing ring 5 can be integrally rotated in the installation and butt joint process, and the positions of bolt holes in the flange piece 4 can be conveniently adjusted so as to align the bolt holes with bolts; it should be further noted that a valve 7 is fixedly installed at a pipe body extending from the movable pipe 6 to the outside of the oil return branch pipe 2, when the movable pipe 6 is not used, the valve 7 can be closed to prevent diesel oil from flowing out of the movable pipe 6, and when the movable pipe 6 is used, the valve 7 is opened.

The implementation principle of the integrated oil return pipe of the diesel engine in the embodiment of the application is as follows: in-process in the diesel engine will be returned oil pipe and install, can pull out movable pipe 6 from backflow branch pipe 2, and make rubber sleeve 10 stretch out backflow branch pipe 2, so can prolong movable pipe 6 and 2 holistic lengths of backflow branch pipe as required according to the circumstances, so that install movable pipe 6, and because rubber sleeve 10 can be crooked, so flexibility when can also strengthening movable pipe 6 and install, when inserting backflow branch pipe 2 with movable pipe 6, rubber sleeve 10 laminates with movable pipe 6's outer wall mutually, thereby can wholly insert in backflow branch pipe 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. The utility model provides a diesel engine integrated form returns oil pipe, is responsible for (1) and oil return branch pipe (2) including the oil return, its characterized in that: oil return branch pipe (2) are responsible for (1) fixed weld with the oil return, along the annular inner wall of oil return branch pipe (2) has been seted up and has been accomodate groove (9), the inboard of accomodating groove (9) is provided with rubber sleeve (10), movable tube (6) are worn to be equipped with by the inboard of rubber sleeve (10), movable tube (6) top extends to the outside of oil return branch pipe (2), just the top of movable tube (6) and two tip of oil return person in charge (1) all are provided with the connecting piece, the base reason of rubber sleeve (10) and the bottom sealing connection of movable tube (6), just the upside inner wall sealing connection of groove (9) is accomodate at the topside reason of rubber sleeve (10).

2. The integrated oil return pipe of the diesel engine according to claim 1, wherein: the upper end of oil return branch pipe (2) is provided with depressed part (11), tight ring (8) have been cup jointed to depressed part (11) department screw thread, tighrening ring (8) are worn through in activity pipe (6) to rotate with tighrening ring (8) and be connected.

3. The integrated oil return pipe of the diesel engine according to claim 1, wherein: the rubber sleeve (10) is nitrile rubber.

4. The integrated oil return pipe of the diesel engine according to claim 1, wherein: the positions of the oil return main pipe (1) close to the two end parts are provided with corrugated pipes (3).

5. The integrated oil return pipe of the diesel engine according to claim 1, wherein: the connecting piece includes flange piece (4) and sealing ring (5), flange piece (4) and sealing ring (5) fixed welding, sealing ring (5) cover is located on the body that corresponds to rotate with the body and be connected.

6. The integrated oil return pipe of the diesel engine according to claim 1, wherein: and a valve (7) is fixedly arranged at the pipe body part of the movable pipe (6) extending to the outside of the oil return branch pipe (2).

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