CN201474738U

CN201474738U - High power internal combustion engine valve casing

Info

Publication number: CN201474738U
Application number: CN2009203039629U
Authority: CN
Inventors: 何强
Original assignee: Changzhou Leadrun Piston Co Ltd; CRRC Qishuyan Institute Co Ltd
Current assignee: Changzhou Leadrun Piston Co Ltd; CRRC Qishuyan Institute Co Ltd
Priority date: 2009-06-03
Filing date: 2009-06-03
Publication date: 2010-05-19
Anticipated expiration: 2019-06-03

Abstract

The utility model relates to a high power internal combustion engine valve casing which is provided with a valve casing body, an isolation device and a cooling water cavity, wherein the valve casing body is provided with an outer wall, an inner upper annular wall and an inner lower annular wall, the upper end of the isolation device is provided with a limit pin, the inner upper annular wall and the inner lower annular wall are a concentric ring with equal annular ring size, the isolation device is circular structure with the diameter equal to the annular ring diameter of the inner upper annular wall and the inner lower annular wall. The cooling water cavity is formed by that the isolation device is inserted into the inner upper annular wall and the inner lower annular wall from top to bottom to form mechanical isolation. The valve casing structure avoids welding between valves, has simple structure, easy molding and casting, avoids segmented casting, has thin wall and light wall, also reduces the weight of the diesel engine, improves the power-mass ratio and accordingly meets the use demands of the high power diesel engine.

Description

A kind of heavy duty valve casing

Technical field

The utility model relates to a kind of internal-combustion engine valve casing, particularly a kind of heavy duty valve casing.

Background technique

At present, traditional mid low speed diesel fuel machine valve casing is seen Figure of description 1, take in the cooling water chamber cast valve shell wall,, thereby cause the valve casing wall very thick because cooling water chamber is in the wall of valve casing, valve casing weight is big, and must take segmentation casting, moulding complexity, casting defect appears easily, casting yield is low, and difficulty of processing is big, must weld between each section of valve casing and form airtight water cavity, since need the hydraulic pressure pressure test, very high to welding requirements.In sum, there are defectives such as casting yield is low, the welding difficulty is big, difficulty of processing big, cost an arm and a leg, weight is big, Economy is low in current diesel engine valve casing.

The model utility content

The purpose of this utility model is to provide a kind of novel internal-combustion engine valve casing, and is simple in structure, easily moulding, and easily casting need not segmentation, also need not welding between the valve body.

The technological scheme that realizes the utility model purpose is: a kind of heavy duty valve casing, have valve casing body, isolation mounting and cooling water chamber, and the valve casing body is provided with outer wall, inner upper ring wall, inner lower ring wall, and the isolation mounting upper end is provided with position limit pin.

Described inner upper ring wall, inner lower ring wall are concentric ring, and center-hole diameter equates.

Described isolation mounting is a cylindrical structural, and its diameter equates with the center-hole diameter of described inner upper ring wall, inner lower ring wall.

The position limit pin diameter of described isolation mounting is greater than the diameter of cylinder.

Described cooling water chamber is that isolation mounting inserts from top to bottom that mechanical isolation forms in the center hole of inner upper ring wall and inner lower ring wall.

Compared with prior art, the utlity model has following beneficial effect: cooling water chamber of the present utility model is when part assembles, isolation mounting inserts in inner upper ring wall and the inner lower ring wall from top to bottom, mechanical isolation forms, need not welding between the valve body of this valve casing structure, simple in structure, the easy moulding of valve casing, easily casting need not the segmentation casting.

This valve casing wall is thin, and is in light weight, can alleviate diesel engine weight, improves merit matter ratio, thereby satisfies the high-power diesel engine usage requirement.

Description of drawings

For the easier quilt of content of the present utility model is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the utility model is described in further detail, wherein

Fig. 1 is the prior art constructions schematic representation.

Fig. 2 is a structural representation of the present utility model.

Label is in the accompanying drawing:

Valve casing body 1, outer wall 11, inner upper ring wall 12, inner lower ring wall 13;

Isolation mounting 2, position limit pin 21;

Cooling water chamber 3.

Embodiment

See Fig. 2, the utlity model has valve casing body 1, isolation mounting 2 and cooling water chamber 3.

Valve casing body 1 is provided with outer wall 11, inner upper ring wall 12, inner lower ring wall 13, and inner upper ring wall 12, inner lower ring wall 13 are concentric ring, and center-hole diameter equates.

The isolation mounting upper end is provided with position limit pin 21, and position limit pin 21 diameters are greater than the diameter of isolation mounting 2.Isolation mounting 2 is a cylindrical structural, and its diameter equates with the center-hole diameter of described inner upper ring wall 12, inner lower ring wall 13.

Cooling water chamber 3 inserts from top to bottom for isolation mounting 2 that mechanical isolation forms in the center hole of inner upper ring wall 12 and inner lower ring wall 13.

Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to mode of execution of the present utility model.For those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here need not also can't give all mode of executions exhaustive, and these belong to conspicuous variation or the change that spirit of the present utility model extended out and still are among the protection domain of the present utility model.

Claims

1. heavy duty valve casing, it is characterized in that: have valve casing body (1), isolation mounting (2) and cooling water chamber (3), valve casing body (1) is provided with outer wall (11), inner upper ring wall (12), inner lower ring wall (13), and isolation mounting (2) upper end is provided with position limit pin (21).

2. heavy duty valve casing according to claim 1 is characterized in that: described inner upper ring wall (12), inner lower ring wall (13) are concentric ring, and center-hole diameter equates.

3. heavy duty valve casing according to claim 1 is characterized in that: described isolation mounting (2) is a round belting shape structure, and its diameter equates with the center-hole diameter of described inner upper ring wall (12), inner lower ring wall (13).

4. heavy duty valve casing according to claim 3 is characterized in that: position limit pin (21) diameter of described isolation mounting (2) is greater than the diameter of isolation mounting (2).

5. heavy duty valve casing according to claim 1 is characterized in that: described cooling water chamber (3) inserts from top to bottom for isolation mounting (2) that mechanical isolation forms in the center hole of inner upper ring wall (12) and inner lower ring wall (13).