CN217080597U

CN217080597U - Cylinder head cover

Info

Publication number: CN217080597U
Application number: CN202220344085.5U
Authority: CN
Inventors: 张奇; 吴恢栋; 张宽路
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-07-29
Anticipated expiration: 2032-02-18

Abstract

The utility model provides a cylinder head cover, include: the housing body, its inside oil-gas separation portion that is provided with, oil-gas separation portion is including admitting air the chamber, with the communicating runner groove in chamber of admitting air, and with the communicating oil-gas separation chamber of runner groove, be provided with the baffler in the oil-gas separation chamber, the baffler divide into the first cavity and the second cavity that communicate each other with the oil-gas separation chamber, first baffle sets up in the bottom of oil-gas separation portion, form the oil duct with the runner groove laminating, first baffle is equipped with the oil gallery, the oil gallery is located first cavity bottom, blast pipe one end is linked together with the second cavity, the other end of blast pipe communicates with each other with the outside of housing body. The setting of separation board in the oil-gas separation chamber for oil-gas mixture forms the vortex in first cavity, thereby machine oil can be blockked by the separation board and flow into in the oil gallery, and waste gas can be outside this through second cavity discharge cover, guarantees oil-gas mixture and fully separates.

Description

Cylinder head cover

Technical Field

The utility model belongs to the technical field of the engine technique and specifically relates to a cylinder head cover.

Background

In the prior art, part of exhaust gas generated by combustion of fuel oil and compressed air in a combustion chamber flows into a crankcase through a piston ring opening and other parts, and if the exhaust gas in the crankcase is not led out, the temperature of engine oil is increased, oil impurities are increased, and the performance of lubricating and cooling the engine oil is deteriorated. Although the existing cylinder cover component is provided with the oil-gas separator, most of the oil-gas separators with complicated structures and simple structures have insufficient oil-gas separation.

Therefore, there is a need for a cylinder head cover with sufficient oil-gas separation and simple structure to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cylinder head cover.

According to an aspect of the present invention, there is provided a cylinder head cover, including:

the oil-gas separation device comprises a cover body, wherein an oil-gas separation part is arranged in the cover body and comprises an air inlet cavity, a circulation groove communicated with the air inlet cavity and an oil-gas separation cavity communicated with the circulation groove, and a blocking plate is arranged in the oil-gas separation cavity and divides the oil-gas separation cavity into a first cavity and a second cavity which are communicated with each other;

the first baffle is arranged at the bottom of the oil-gas separation part, the first baffle is attached to the circulation groove to form an oil duct, the first baffle is provided with an oil return hole, and the oil return hole is positioned at the bottom of the first cavity;

one end of the exhaust pipe is communicated with the second chamber, and the other end of the exhaust pipe is communicated with the outside of the cover body;

the oil-gas mixture enters the oil duct from the air inlet cavity and then sequentially passes through the first cavity and the second cavity, the separated engine oil flows out from the oil return hole, and the separated waste gas is discharged from the exhaust pipe.

Preferably, the oil-gas separation portion is protruding upwards from the housing body, and the oil-gas separation portion includes first lateral wall, second lateral wall, third lateral wall and fourth lateral wall, first lateral wall and second lateral wall set up relatively, third lateral wall and fourth lateral wall set up relatively, the oil duct includes the baffle group, the baffle group sets up from oil-gas separation portion top downwardly extending.

Preferably, the partition plate group includes a first partition plate and a second partition plate, the first partition plate extends from the first side wall to the second side wall, a gap is reserved between the first partition plate and the second side wall, the second partition plate extends from the second side wall to the first side wall, a gap is reserved between the second partition plate and the first side wall, and the first partition plate and the second partition plate are arranged in parallel.

Preferably, the upper surface of the first baffle is attached and fixed to the lower end of the partition plate group.

Preferably, the oil-gas separation chamber comprises a third partition plate, the baffle plate extends from the fourth side wall to the third partition plate, and a gap is reserved between the baffle plate and the fifth partition plate.

Preferably, the oil return hole includes first punching a hole and returns the oil jacket, the oil return cover is from first baffle stamping forming downwards, the through-hole is seted up to oil return cover bottom, the oil return overlaps to be established on the first outer wall that punches a hole.

Preferably, the air inlet cavity is located between the first partition plate and the third side wall, the first baffle plate is provided with an air inlet, and the air inlet is located at the bottom of the air inlet cavity.

Preferably, the second side wall is provided with an exhaust port at a position corresponding to the second chamber, and the exhaust pipe is communicated with the exhaust port.

Preferably, the lower end surface of the cover body is provided with a continuous sealing groove, and the width of the bottom of the cross section of the sealing groove is larger than that of the top of the cross section of the sealing groove.

Preferably, the head cover body is provided with an oil hole.

Compared with the prior art, the utility model provides a cylinder head cover has following beneficial effect:

the setting of separation board in the oil-gas separation cavity for oil-gas mixture forms the vortex in first cavity, thereby machine oil can be blockked by the separation board and flow into in the oil gallery, and waste gas can be outside this through second cavity discharge housing, guarantees that oil-gas mixture fully separates, makes things convenient for machine oil to retrieve, and overall structure is simple compact, saves the external dimension material when the assembly is maintained simply, makes the engine more accord with the demand of lightweight.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

fig. 1 is a bottom view of a cylinder head cover according to the present invention;

fig. 2 is a bottom view of the oil-gas separation part of the present invention;

FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 1;

FIG. 4 is an enlarged view taken at I in FIG. 3;

fig. 5 is an enlarged view at II in fig. 3.

Wherein: 1. the oil-gas separation cover comprises a cover body, 11, an oil-gas separation part, 111, an air inlet cavity, 112, a flow groove, 113, an oil-gas separation cavity, 1131, a first chamber, 1132, a second chamber, 1133, a third partition plate, 114, a baffle plate, 115, a partition plate group, 1151, a first partition plate, 1152, a second partition plate, 1153, a fourth partition plate, 1154, a fifth partition plate, 116, an oil duct, 117, a first side wall, 118, a second side wall, 119, a third side wall, 120, a fourth side wall, 12, an exhaust port, 2, a first baffle plate, 21, an oil return hole, 211, a first punching hole, 212, an oil return sleeve, 2121, a through hole, 22, an air inlet, 3, an exhaust pipe, 4, a sealing groove and 5 engine oil holes.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

Referring to fig. 1 and 2, the utility model discloses a cylinder head cover, include: a cover body 1, a first baffle 2, and an exhaust pipe 3. Be equipped with the machine oil hole 5 on the cover body 1, be provided with oil-gas separation portion 11 in the cover body 1, oil-gas separation portion 11 includes the circulation groove 112 that admits air chamber 111, is linked together with the chamber 111 that admits air to and the oil-gas separation chamber 113 that is linked together with circulation groove 112, be provided with separation board 114 in the oil-gas separation chamber 113, separation board 114 splits oil-gas separation chamber 113 into first cavity 1131 and the second cavity 1132 that communicate with each other, and first cavity 1131 communicates with each other with circulation groove 112, and second cavity 1132 communicates with each other with blast pipe 3.

The oil-gas separation part 11 protrudes upward from the cover body 1, the upper surface of the oil-gas separation part 11 is higher than the upper surface of the cover body 1, and is integrally formed with the cover body 1, the oil-gas separation part 11 includes a first sidewall 117, a second sidewall 118, a third sidewall 119 and a fourth sidewall 120, the first sidewall 117 and the second sidewall 118 are arranged in parallel with each other, the third sidewall 119 and the fourth sidewall 120 are arranged in parallel with each other, in other embodiments, the first sidewall 117 and the second sidewall 118 may be arranged in non-parallel, and the third sidewall 119 and the fourth sidewall 120 may be arranged in non-parallel.

The circulation groove 112 is formed by a partition plate group 115, the partition plate group 115 is extended downward from the top end of the cover body 1, and the partition plate group 115 is integrally formed with the cover body 1. Group 115 includes first, second, fourth, and

fifth baffles

1151, 1152, 1153, 1154, wherein first baffle 1151 extends from first sidewall 117 to second sidewall 118, a gap is defined between first baffle 1151 and second sidewall 118, second baffle 1152 extends from second sidewall 118 to first sidewall 117, and a gap is defined between second baffle 1152 and first sidewall 117.

Fourth baffle 1153 extends from first sidewall 117 to second sidewall 118, a gap is formed between fourth baffle 1153 and second sidewall 118, fifth baffle 1154 extends from second sidewall 118 to first sidewall 117, a gap is formed between fifth baffle 1154 and first sidewall 117, and first baffle 1151, second baffle 1152, fourth baffle 1153 and fifth baffle 1154 are all arranged in parallel. In other embodiments, the number of baffles may be increased or decreased depending on the application.

The oil-gas separation chamber 113 includes a third partition 1133, the baffle plate 114 extends from the fourth sidewall 120 to the third partition 1133, and a gap exists between the baffle plate 114 and the third partition 1133, so that the separated exhaust gas can pass through and enter the second chamber 1132, the baffle plate 114 is not limited to the arrangement form of this embodiment, in other embodiments, the baffle plate 114 may also extend from the third partition 1133 to the fourth sidewall 120 and leave a gap with the fourth sidewall 120, or the baffle plate 114 is connected to both the fourth sidewall 120 and the third partition 1133, and a through hole is formed in the baffle plate 114, so that the first chamber and the second chamber are communicated with each other to pass through the exhaust gas.

Referring to fig. 2 and 3, one end of the exhaust pipe 3 is communicated with the second chamber 1132, the other end of the exhaust pipe 3 is communicated with the outside of the cover body 1, the exhaust port 12 is formed in the position of the second side wall 118 corresponding to the second chamber 1132, and the exhaust pipe 3 is communicated with the exhaust port 12, so as to be communicated with the second chamber 1132.

Referring to fig. 1 and 4, the first baffle 2 is disposed at the bottom of the oil-gas separation portion 11, the upper surface of the first baffle 2 is attached to the lower end of the partition plate set 115 and forms an oil passage 116 with the circulation groove, the four corners of the first baffle 2 are fixedly connected to the cover body 1 through bolts, the first baffle 2 is provided with oil return holes 21, the oil return holes 21 are located at the bottom of the first cavity 1131, and the oil return holes 21 are located at the lowest position of the whole separation cavity, so that the separated engine oil can be collected at the oil return holes 21.

The oil return hole 21 includes a first punched hole 211 and an oil return sleeve 212, a through hole 2121 is formed in the bottom of the oil return sleeve 212, preferably, the first punched hole 211 and the oil return sleeve 212 are both tapered and are adapted to each other, and the oil return sleeve 212 is sleeved on the outer wall of the first punched hole 211 and is welded and fixed. The oil return sleeve 212 may also take other shapes, such as cylindrical, and may be adapted to the first punched hole 211.

Referring to fig. 1 and 2, the air intake cavity 111 is located between the first partition 1151 and the third side wall 119, an air intake 22 is opened at one end of the first baffle 2, and the air intake 22 is located at the bottom of the air intake cavity 111, so that the oil-gas mixture guided out from the crankcase enters the air intake cavity 111.

Referring to fig. 5, the lower end surface of the cover body 1 is provided with a continuous sealing groove 4, the width of the bottom of the cross section of the sealing groove 4 is larger than that of the top, and the included angle between the left side surface and the right side surface of the sealing groove 4 is about 3 degrees, so that the sealing is facilitated.

Generally, a hole is formed in the tappet side of the engine body to communicate a crankcase, a cylinder head and a cylinder head cover of the engine body. I.e. the mixture gas of the crankcase is communicated with the cylinder head cover. The mixture of the crankcase oil and the air enters the oil passage 116 from the air inlet 22 and then enters the first chamber 1131, and the air are converged and form a vortex in the first chamber 1131 due to the obstruction of the air and air mixture by the baffle plate 114.

The engine oil part in the oil-gas mixture can be blocked by the blocking plate 114, drips and gathers at the oil return hole 21, and falls back to the cylinder cover through the oil return hole 21, and then returns to the oil pan, most engine oil in the recoverable oil-gas mixture, waste gas in the oil-gas mixture can flow into the second chamber 1132, and then is discharged through the exhaust pipe 3, and the exhaust port 12 is communicated with an external respirator or an air outlet rubber pipe.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. A cylinder head cover, characterized by comprising:

2. The cylinder head cover of claim 1, wherein the oil-gas separation portion protrudes upward from the cover body, the oil-gas separation portion includes a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, the first sidewall and the second sidewall are disposed opposite to each other, the third sidewall and the fourth sidewall are disposed opposite to each other, and the circulation groove includes a partition plate group, the partition plate group being disposed to extend downward from a top end of the oil-gas separation portion.

3. The cylinder head cover according to claim 2, wherein the group of partition plates includes a first partition plate extending from the first side wall toward the second side wall with a gap therebetween, and a second partition plate extending from the second side wall toward the first side wall with a gap therebetween, the first partition plate and the second partition plate being arranged in parallel.

4. The cylinder head cover of claim 3, wherein the upper surface of the first baffle is secured in abutment with the lower end of the group of baffles.

5. The head cover of claim 4, wherein the oil-gas separation chamber includes a third partition, and the baffle plate extends from the fourth side wall toward the third partition, leaving a gap with the third partition.

6. The cylinder head cover of claim 5, wherein the oil return hole comprises a first punched hole punched downward from the first baffle and an oil return sleeve, a through hole is formed in the bottom of the oil return sleeve, and the oil return sleeve is sleeved on the outer wall of the first punched hole.

7. The cylinder head cover of claim 6, wherein the intake chamber is located between the first partition and the fourth sidewall, and the first baffle plate is provided with an intake port located at a bottom of the intake chamber.

8. The cylinder head cover of claim 7, wherein the second sidewall defines an exhaust port at a location corresponding to the second chamber, the exhaust duct being in communication with the exhaust port.

9. The cylinder head cover of claim 1, wherein the lower end surface of the cover body is provided with a continuous sealing groove having a cross-section with a width at the bottom that is greater than a width at the top.

10. The cylinder head cover of claim 1, wherein the cover body is provided with an oil hole.