CN218093280U

CN218093280U - Long needle valve electric control oil injector without static leakage

Info

Publication number: CN218093280U
Application number: CN202222843291.3U
Authority: CN
Inventors: 丛日新; 于艳玲; 戴丽君
Original assignee: Longkou Kangda Internal Combustion Engine Parts Co ltd
Current assignee: Longkou Kangda Internal Combustion Engine Parts Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2022-12-20
Anticipated expiration: 2032-10-27

Abstract

The utility model relates to an automatically controlled fuel injector technical field discloses a long needle valve automatically controlled fuel injector of no static leakage, including automatically controlled fuel injector body, the inside of automatically controlled fuel injector body is provided with movable groove, the first spring of the interior top fixedly connected with of automatically controlled fuel injector body, the bottom fixedly connected with needle valve rod of first spring, the outer wall of needle valve rod all is provided with the mounting groove all around, the equal fixedly connected with pivot in both sides about the inner wall of mounting groove, the outside of pivot is connected with the gyro wheel through the bearing, the inside downside of needle valve rod is provided with movable groove. The utility model discloses in, through rational in infrastructure, further reduce the coefficient of friction between needle valve rod and the inside movable groove of sprayer, solved the fitting clearance of long needle valve at the inner wall of sprayer when minimum, make the inside card that takes place of long needle valve die to avoid taking place the unable plugging up phenomenon of inside nozzle, solve the fuel leakage problem.

Description

Long needle valve electric control oil injector without static leakage

Technical Field

The utility model relates to an automatically controlled fuel injector technical field especially relates to a long needle valve automatically controlled fuel injector that does not have static leakage.

Background

The electronic control oil sprayer is a precise device with very high processing precision, and is required to have large dynamic flow range, strong anti-blocking and anti-pollution capacity and good atomization performance, the electronic control oil sprayer receives an oil spraying pulse signal sent by an ECU (electronic control Unit) and precisely controls the fuel oil spraying quantity, the spraying characteristics of the oil sprayer comprise the atomizing granularity, the oil mist distribution, the oil beam direction, the spraying range, the diffusion cone angle and the like, the most precise element of the electronic control oil sprayer is an internal long needle valve, and the oil spraying effect of the oil sprayer is realized by controlling the lifting of the long needle valve.

The existing electronic control oil injector has the following defects in the use process, firstly, after the traditional electronic control oil injector is used for a period of time, due to the problem that impurities exist in fuel oil, and then the fit clearance of the long needle valve on the inner wall of the oil injector is extremely small, the long needle valve is easy to block, and further the fuel oil leakage problem is caused, secondly, in the use process of the electronic control oil injector, the bottom end of the long needle valve inside the electronic control oil injector contacts the inner wall of the oil injector for many times, and the service life of the long needle valve is easy to shorten for a long time, so that the normal use of the oil injector is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an electric control oil sprayer of a long needle valve without static leakage.

In order to realize the purpose, the utility model adopts the following technical scheme: the utility model provides a no static automatically controlled sprayer of long needle valve who leaks, includes automatically controlled sprayer body, the inside of automatically controlled sprayer body is provided with the movable groove, the first spring of the interior top fixedly connected with of automatically controlled sprayer body, the bottom fixedly connected with needle valve rod of first spring, the outer wall of needle valve rod all is provided with the mounting groove all around, the equal fixedly connected with pivot in both sides about the inner wall of mounting groove, the outside of pivot is connected with the gyro wheel through the bearing, the inside downside of needle valve rod is provided with the movable groove, the inside sliding connection in movable groove has the go-between, the bottom fixedly connected with annular rubber sleeve of go-between, the equal fixedly connected with sleeve pipe in the top left and right sides of annular rubber sleeve, sheathed tube outside top sliding connection has the fixing base, the interior top fixedly connected with second spring of fixing base.

As a further description of the above technical solution:

the top of two fixing base links to each other with the bottom of needle valve pole, the other end of second spring links to each other with sheathed tube top.

As a further description of the above technical solution:

the inside downside of automatically controlled sprayer body is provided with the needle valve top, the outside bottom of automatically controlled sprayer body is provided with a plurality of nozzle openings.

As a further description of the above technical solution:

the oil inlet pipe is fixedly connected to the right end of the outer portion of the electric control oil sprayer body, an oil inlet pipe is arranged inside the oil inlet pipe, and the other end of the oil inlet pipe is arranged on the lower side of the inner portion of the movable groove.

As a further description of the above technical solution:

the outer left end fixedly connected with of automatically controlled sprayer body goes out oil pipe, the inside of going out oil pipe is provided with oil outlet pipe, the other end setting of oil outlet pipe is at the inside upside of movable groove.

As a further description of the above technical solution:

the outer wall of the roller is attached to the inner wall of the movable groove.

As a further description of the above technical solution:

the oil injection ports are communicated with the sealing cavity, and the movable groove is communicated with the sealing cavity.

The utility model discloses following beneficial effect has:

1. the utility model discloses in, through pivot, gyro wheel, mounting groove structural design, can make and reduce the long needle valve and the inside movable groove area of contact of sprayer, further reduce the coefficient of friction between long needle valve and the inside movable groove of sprayer, solved the fit clearance of long needle valve at the inner wall of sprayer when minimum, make the inside card that takes place of long needle valve die to avoid taking place the unable plugging up phenomenon of inside nozzle, solve the fuel leakage problem, simple structure, the practicality is strong.

2. The utility model discloses in, through annular rubber sleeve, fixing base, sleeve pipe, go-between structural design, effectively protected when can making the inside long needle valve of automatically controlled fuel injector use to improve the life of long needle valve, the people of being convenient for use automatically controlled fuel injector.

Drawings

Fig. 1 is a front sectional view of a long needle valve electric control fuel injector without static leakage according to the present invention;

fig. 2 is a perspective view of a needle valve tube of the long needle valve electric control fuel injector without static leakage according to the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 1;

fig. 4 is a schematic diagram of the internal structure of the fixing seat of the long needle valve electric control fuel injector without static leakage according to the present invention.

Illustration of the drawings:

1. an electrically controlled fuel injector body; 2. sealing the cavity; 3. a rotating shaft; 4. a roller; 5. mounting grooves; 6. an oil inlet pipeline; 7. a movable groove; 8. a first spring; 9. an oil outlet pipeline; 10. an oil outlet pipe; 11. a needle valve stem; 12. a fixed seat; 13. an annular rubber sleeve; 14. a sleeve; 15. a needle valve tip; 16. an oil injection port; 17. a connecting ring; 18. a second spring; 19. an oil inlet pipe; 20. a movable groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, 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 invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: including automatically controlled sprayer body 1, the inside of automatically controlled sprayer body 1 is provided with movable groove 7, be convenient for realize that needle valve rod 11 moves about in the inside of movable groove 7, the first spring 8 of the interior top fixedly connected with of automatically controlled sprayer body 1, through the inside oil pressure size of control movable groove 7, utilize first spring 8 elasticity to go to realize the whereabouts of needle valve rod 11, bottom fixedly connected with needle valve rod 11 through first spring 8, all be provided with mounting groove 5 around the outer wall of needle valve rod 11, be convenient for install pivot 3 and gyro wheel 4, the equal fixedly connected with pivot 3 in both sides about the inner wall of mounting groove 5, play the effect of fixed gyro wheel 4, the outside of pivot 3 is connected with gyro wheel 4 through the bearing, gyro wheel 4 rises or descends in-process at movable groove 7, be convenient for realize the rotation to gyro wheel 4, thereby reduce needle valve rod 11 and the inside movable groove 7 area of contact of sprayer shell 1, thereby reduce the coefficient of friction between needle valve rod 11 and the sprayer shell 1, the inside downside of needle valve rod 11 is provided with movable groove 20, the inside of movable groove 20 has movable groove 17, make annular rubber sleeve 13 rise in-process, there is certain space, can make go-between movable groove 17. 20, go-between 17's bottom fixedly connected with annular rubber sleeve 13, a bottom for protection needle valve rod 11, the equal fixedly connected with sleeve pipe 14 in the top left and right sides of annular rubber sleeve 13, sleeve pipe 14's outside top sliding connection has fixing base 12, the interior top fixedly connected with second spring 18 of fixing base 12, sleeve pipe 14 can extrude second spring 18 in the inside of fixing base 12, realize the whereabouts in-process, effectively cushion needle valve rod 11's bottom, thereby effectively protect needle valve rod 11, the life of needle valve rod 11 has been improved, thereby it uses automatically controlled sprayer body 1 to be convenient for people.

The top ends of the two fixed seats 12 are connected with the bottom of the needle valve rod 11, the effect of fixing the two fixed seats 12 is achieved, the other end of the second spring 18 is connected with the top end of the sleeve 14, the effect of fixing the second spring 18 is achieved, the needle valve top 15 is arranged on the lower side of the inside of the electronic control fuel injector body 1, the needle valve top 15 slides into the inside of the sealed cavity 2, plugging of the plurality of fuel injection ports 16 is achieved, leakage of fuel is avoided, the bottom end of the outside of the electronic control fuel injector body 1 is provided with the plurality of fuel injection ports 16, the oil inlet pipeline 6 is fixedly connected to the right end of the outside of the electronic control fuel injector body 1, the effect of fixing the oil inlet pipeline 6 is achieved, the oil inlet pipeline 19 is arranged inside the oil inlet pipeline 6, the other end of the oil inlet pipeline 19 is arranged on the lower side of the inside of the movable groove 7, fuel can conveniently enter the inside of the movable groove 20, the left end of the electronic control fuel injector body 1 is fixedly connected with the oil pipeline 9, the oil outlet pipeline 10 is arranged inside of the oil outlet pipeline 9, the other end of the oil outlet pipe 10 is arranged on the upper side of the movable groove 7, the outer wall of the roller 4 is attached to the inner wall of the movable groove 7, the movable groove 7 is communicated with the sealed cavity 2, and the fuel oil outlet cavity.

The working principle is as follows: needle valve rod 11 realizes the lift in-process at first spring 8, gyro wheel 4 through needle valve rod 11's outer wall sets up all around, needle valve rod 11 removes the in-process, gyro wheel 4 rotates through pivot 3, reduce needle valve rod 11 and the inside movable groove 7 area of contact of sprayer shell 1, thereby reduce the coefficient of friction between needle valve rod 11 and the sprayer shell 1, it is minimum to have solved the fit clearance of long needle valve at the inner wall of sprayer, when having impurity in the fuel, avoid taking place to lead to the dead phenomenon of long needle valve card, avoid taking place to make nozzle 16 unable closed, thereby fuel leakage problem has been solved, when first spring 8 control needle valve rod 11 falls, needle valve top 15 can slide into the inside of sealed chamber 2, make nozzle 16 close, annular rubber sleeve 13 can upwards extrude in the inside of sprayer shell 1 simultaneously, sleeve pipe 14 can extrude second spring 18 in the inside of fixing base 12, realize the in-process of falling, effectively cushion needle valve rod 11, thereby effectively protect needle valve rod 11, the life of needle valve rod 11 has been improved, thereby improve the life of shell, the indirect needle valve rod 14 drives the further lower end of the needle valve 15 and drives the lower part of the needle valve and the further pushes up the back to the effect of the pushing of the needle valve, thereby more.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a no static long needle valve automatically controlled sprayer that leaks, includes automatically controlled sprayer body (1), its characterized in that: the electronic control fuel injector is characterized in that a movable groove (7) is formed in the electronic control fuel injector body (1), a first spring (8) is fixedly connected to the inner top of the electronic control fuel injector body (1), a needle valve rod (11) is fixedly connected to the bottom end of the first spring (8), a mounting groove (5) is formed in the periphery of the outer wall of the needle valve rod (11), a rotating shaft (3) is fixedly connected to the upper side and the lower side of the inner wall of the mounting groove (5), rollers (4) are connected to the outer portion of the rotating shaft (3) through bearings, a movable groove (20) is formed in the inner lower side of the needle valve rod (11), a connecting ring (17) is connected to the inner sliding portion of the movable groove (20), an annular rubber sleeve (13) is fixedly connected to the bottom end of the connecting ring (17), a sleeve (14) is fixedly connected to the left side and the right side of the top end of the annular rubber sleeve (13), a fixing seat (12) is connected to the outer top sliding portion of the sleeve (14), and a second spring (18) is fixedly connected to the inner top of the fixing seat (12).

2. The long needle valve electric fuel injector without static leakage according to claim 1, characterized in that: the top ends of the two fixed seats (12) are connected with the bottom of the needle valve rod (11), and the other end of the second spring (18) is connected with the top end of the sleeve (14).

3. The long needle valve electric fuel injector without static leakage according to claim 1, characterized in that: the electronic control fuel injector is characterized in that a needle valve top head (15) is arranged on the lower side of the inside of the electronic control fuel injector body (1), and a plurality of fuel injection ports (16) are arranged at the bottom end of the outside of the electronic control fuel injector body (1).

4. The long needle valve electric fuel injector without static leakage according to claim 1, characterized in that: the electronic control fuel injector is characterized in that a fuel inlet pipeline (6) is fixedly connected to the right end of the outer portion of the electronic control fuel injector body (1), a fuel inlet pipe (19) is arranged inside the fuel inlet pipeline (6), and the other end of the fuel inlet pipe (19) is arranged on the lower side of the inner portion of the movable groove (7).

5. The long needle valve electric fuel injector without static leakage according to claim 1, characterized in that: the oil spraying device is characterized in that an oil outlet pipeline (9) is fixedly connected to the left end of the outer portion of the electric control oil sprayer body (1), an oil outlet pipe (10) is arranged inside the oil outlet pipeline (9), and the other end of the oil outlet pipe (10) is arranged on the upper side of the inner portion of the movable groove (7).

6. The long needle valve electric fuel injector without static leakage according to claim 1, characterized in that: the outer wall of the roller (4) is attached to the inner wall of the movable groove (7).

7. The long needle valve electric fuel injector without static leakage according to claim 3, characterized in that: the oil nozzles (16) are communicated with the sealing cavity (2), and the movable groove (7) is communicated with the sealing cavity (2).