CN210858911U

CN210858911U - Combined nozzle structure

Info

Publication number: CN210858911U
Application number: CN201921986221.5U
Authority: CN
Inventors: 任彦平; 陈元敏; 吴揖鹏; 陆林
Original assignee: Mianyang Fulin Precision Machinery Co Ltd
Current assignee: Mianyang Fulin Precision Machinery Co Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-06-26
Anticipated expiration: 2029-11-15

Abstract

The utility model provides a modular nozzle structure, including valve body, spray tube (2) and plunger (6), the valve body include fixed connection become integrative lower valve body (3) and last valve body (4), lower valve body (3) on form inlet port (31) and oil outlet (32) respectively, oil outlet (32) and spray tube (2) intercommunication, last valve body (4) on form axial hole (41), plunger (6) and axial hole (41) between form the clearance fit structure. Therefore, the utility model discloses in the course of the work, when plunger (6) relative to last valve body (4) linear motion under the oil pressure effect from among oil inlet (31), plunger (6) will be at the axial hole (41) within range of injecing relative to the valve body straight line slip from top to bottom to can greatly reduce the risk that the plunger takes place radial jamming, make the operational reliability of nozzle can improve effectively.

Description

Combined nozzle structure

Technical Field

The utility model belongs to the technical field of nozzle structural design and specifically relates to a be applied to a modular nozzle structure of automobile engine piston cooling usefulness.

Background

With the implementation of the more and more strict emission regulations of the state on the automobile engine, the supercharged engine is continuously strengthened, and the power is continuously increased, so that the working temperature of the piston is increased under the working condition of low rotating speed of the engine.

In order to prevent the working reliability of the piston from being affected by the overhigh working temperature, the piston is generally subjected to oil injection cooling by adopting a nozzle so as to ensure the normal work of the piston and further ensure the working reliability and the service life of the engine. However, in the prior nozzle, the plunger is easy to generate radial clamping stagnation in the actual use process, thereby reducing the working reliability of the nozzle.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: to solve the problems in the prior art, a combined nozzle structure is provided, and the working reliability of the nozzle is improved.

The to-be-solved technical problem of the utility model adopts following technical scheme to realize: the utility model provides a modular nozzle structure, includes valve body, spray tube and plunger, plunger and valve body between form relative sliding's swing joint, the valve body include fixed connection become integrative lower valve body and last valve body, lower valve body on form inlet port and oil outlet respectively, oil outlet and spray tube intercommunication, last valve body on form the axial hole, plunger and axial hole between form clearance fit structure.

Preferably, an oil spraying cavity is formed among the upper valve body, the lower valve body and the plunger, and the oil passing area of the oil spraying cavity is larger than the sectional area of the inlet of the spray pipe.

Preferably, the axial inner hole on the upper valve body is in a through hole structure with the same diameter.

Preferably, the cross-sectional shape of the upper valve body is a T-shaped structure, and the relatively smaller end of the T-shaped structure is fixedly connected with the lower valve body.

Preferably, the relatively smaller end of the upper valve body is inserted into the inner cavity of the lower valve body and forms an interference fit structure with the inner cavity of the lower valve body.

Preferably, the plunger be cavity structures, last valve body and stopper fixed connection, set up the spring between stopper and plunger, the cross sectional shape of stopper is T shape structure, form the hollow cavity that cup joint structure, spring's the other end are located the plunger between the less relatively end of the one end of spring and stopper.

Preferably, the limiting block is provided with an exhaust hole, and the exhaust hole is communicated with the hollow cavity of the plunger.

Preferably, a fixed connecting structure is formed between the lower valve body and the positioning plate.

Compared with the prior art, the beneficial effects of the utility model are that: through designing the valve body into lower valve body and the upper valve body of mutual fixed connection, form the axial hole on last valve body to make and form clearance fit structure between plunger and the axial hole, when the plunger is linear motion relative to upper valve body under the oil pressure effect that comes from the inlet port, can greatly reduce the plunger and take place the risk of radial jamming, thereby improved the operational reliability of nozzle effectively.

Drawings

Fig. 1 is a sectional view showing the structure of a combined nozzle structure according to the present invention (the nozzle is in a closed state).

Fig. 2 is a sectional view showing the structure of the combined nozzle structure of the present invention (the nozzle is in a half-open state).

Fig. 3 is a sectional view showing the structure of the combined nozzle structure of the present invention (the nozzle is in a fully opened state).

Part label name in the figure: 1-a positioning sheet, 2-a spray pipe, 3-a lower valve body, 4-an upper valve body, 5-a limiting block, 6-a plunger, 7-a spring, 8-an oil spraying cavity, 31-an oil inlet, 32-an oil outlet, 41-an axial inner hole and 51-an exhaust hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The combined nozzle structure shown in fig. 1, 2 and 3 mainly comprises a valve body, a spray pipe 2, a limit block 5, a plunger 6 and a spring 7, wherein the valve body comprises a lower valve body 3 and an upper valve body 4 which are fixedly connected into a whole, the cross section of the upper valve body 4 can be designed into a T-shaped structure, and the relatively smaller end of the upper valve body is fixedly connected with the lower valve body 3; usually, the relatively smaller end of the upper valve body 4 is inserted into the inner cavity of the lower valve body 3, and forms an interference fit structure with the inner cavity of the lower valve body 3. An oil inlet hole 31 and an oil outlet hole 32 which are communicated with the inner cavity of the lower valve body 3 are respectively formed on the lower valve body 3, the oil inlet hole 31 is preferably an axial oil inlet hole, the oil outlet hole 32 is preferably a radial oil outlet hole, and the number of the oil outlet holes can be unlimited. The inlet end of the spray pipe 2 is fixedly connected with the lower valve body 3, and the oil outlet 32 on the lower valve body 3 is communicated with the inlet of the spray pipe 2. An axial inner hole 41 is formed on the upper valve body 4, and a clearance fit structure is formed between the plunger 6 and the axial inner hole 41, so that the plunger 6 and the upper valve body 4 are movably connected in a relative sliding manner.

A fixed connecting structure is formed between the limiting block 5 and the upper valve body 4, a spring 7 is arranged between the limiting block 5 and the plunger 6, and an exhaust hole 51 is formed in the limiting block 5. Generally, the plunger 6 may adopt a hollow cavity structure, and the cross section shape of the hollow cavity structure is preferably a U-shaped cavity structure, and the vent hole 51 on the limiting block 5 is communicated with the hollow cavity of the plunger 6. The cross-sectional shape of stopper 5 preferably adopts T shape structure, form the cup joint structure between the less end relatively on one end of spring 7 and the stopper 5, and the other end of spring 7 is located the cavity of plunger 6. Lower valve body 3 and spacer 1 between form fixed connection structure, the utility model discloses a nozzle can be through 1 fixed mounting of spacer on the engine.

When the nozzle is operated, the plunger 6 compresses the spring 7 by the oil pressure from the oil inlet hole 31 and moves linearly upward relative to the upper valve body 4 until an oil injection passage is formed between the oil inlet hole 31, the oil outlet hole 32 and the nozzle pipe 2, and the nozzle structure is in an open state. In the process, the nozzle has no back pressure when being opened, so the opening process of the nozzle is very quick, and after the nozzle is opened, an oil injection channel is formed among the oil inlet hole 31, the oil outlet hole 32 and the spray pipe 2 on the nozzle immediately, so that the nozzle can perform oil injection cooling on the piston in time, thereby improving the cooling efficiency of the nozzle on the piston and being beneficial to ensuring the working reliability of the piston.

When the plunger 6 moves linearly downwards relative to the upper valve body 4 under the action of the axial elastic force of the spring 7 until an elastic contact sealing structure is formed between the bottom of the plunger 6 and the oil inlet hole 31 on the lower valve body 3, the nozzle structure is in a closed state, as shown in fig. 1, at this time, the oil inlet hole 31 and the oil outlet hole 32 are in a disconnected state, and the nozzle structure cannot form an oil injection channel. Because the plunger 6 moves linearly up and down relative to the upper valve body 4 within the range limited by the axial inner hole 41, the risk of radial clamping stagnation of the plunger 6 can be greatly reduced, and the working reliability of the nozzle is effectively improved. Generally, the axial inner hole 41 on the upper valve body 4 is of a through hole structure with the same diameter, so that impurities such as burrs and the like can be removed easily in the machining process of the upper valve body 4, the risk of radial clamping stagnation of the plunger 6 can be further reduced, and a more reliable guiding function can be provided for the movement of the plunger 6.

In order to further improve the motion stability of the plunger 6 in linear motion relative to the upper valve body 4 and improve the action sensitivity of the plunger 6, an oil injection cavity 8 with an annular structure can be formed among the upper valve body 4, the lower valve body 3 and the plunger 6, and the oil passing area of the oil injection cavity 8 is larger than the sectional area of the inlet of the spray pipe 2. When the nozzle works, engine oil enters the inner cavity of the lower valve body 3 from the oil inlet hole 31 and pushes the plunger 6 to move upwards relative to the upper valve body 4 through oil pressure, in the process, the plunger 6 can completely enter the axial inner hole 41 of the upper valve body 4, so that more engine oil flows into the oil injection cavity 8, passes through the oil outlet hole 32 and is finally injected to the bottom of the piston or an inner cooling oil cavity of the piston through the spray pipe 2 to cool the piston. Because the oil passing area of the oil injection cavity 8 is far larger than the sectional area of the inlet hole of the spray pipe 2, the oil injection cavity 8 can realize quick pressure relief in the closing stage of the nozzle, so that the plunger 6 can quickly retract and reach a closing state, and the pressure loss of a main oil passage of an engine is reduced.

The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.

Claims

1. The utility model provides a modular nozzle structure, includes valve body, spray tube (2) and plunger (6), plunger (6) and valve body between form relative slip's swing joint, its characterized in that: the valve body include fixed connection become integrative lower valve body (3) and go up valve body (4), lower valve body (3) on form inlet port (31) and oil outlet (32) respectively, oil outlet (32) and spray tube (2) intercommunication, last valve body (4) on form axial hole (41), plunger (6) and axial hole (41) between form clearance fit structure.

2. The modular nozzle structure of claim 1 wherein: an oil spraying cavity (8) is formed among the upper valve body (4), the lower valve body (3) and the plunger (6), and the oil passing area of the oil spraying cavity (8) is larger than the sectional area of an inlet of the spray pipe (2).

3. The modular nozzle structure of claim 1 wherein: and an axial inner hole (41) on the upper valve body (4) is of an equal-diameter through hole structure.

4. The modular nozzle structure of claim 1 wherein: the cross section of the upper valve body (4) is in a T-shaped structure, and the relatively smaller end of the upper valve body is fixedly connected with the lower valve body (3).

5. The modular nozzle structure of claim 4 wherein: the relatively small end of the upper valve body (4) is inserted into the inner cavity of the lower valve body (3) and forms an interference fit structure with the inner cavity of the lower valve body (3).

6. A modular nozzle structure according to any of claims 1 to 5, wherein: plunger (6) be cavity structures, last valve body (4) and stopper (5) fixed connection, set up spring (7) between stopper (5) and plunger (6), the cross-sectional shape of stopper (5) is T shape structure, the other end that forms socket joint structure, spring (7) between the one end of spring (7) and the less end relatively of stopper (5) is located the cavity intracavity of plunger (6).

7. The modular nozzle structure of claim 6 wherein: the limiting block (5) is provided with an exhaust hole (51), and the exhaust hole (51) is communicated with the hollow cavity of the plunger (6).

8. A modular nozzle structure according to any of claims 1 to 5, wherein: and a fixed connecting structure is formed between the lower valve body (3) and the positioning plate (1).