CN214304001U

CN214304001U - Oil-gas separation cylinder head cover

Info

Publication number: CN214304001U
Application number: CN202120407792.XU
Authority: CN
Inventors: 罗鹏; 屠红芳
Original assignee: Ningbo Yulong Auto Parts Co ltd
Current assignee: Ningbo Yulong Auto Parts Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-09-28
Anticipated expiration: 2031-02-24

Abstract

The application relates to an oil-gas separation cylinder head cover, which comprises a cylinder head cover body, wherein the cylinder head cover body is provided with a filter cavity, an oil-gas inlet for supplying oil gas to the filter cavity and an oil-gas outlet for discharging the oil gas from the filter cavity; the oil gas separation device comprises a filter chamber, a cylinder cover body and a cylinder cover body, wherein the filter chamber is arranged at one end close to an oil gas inlet and is arranged as a coarse separation chamber, the filter chamber is arranged at one end close to an oil gas outlet and is arranged as a fine separation chamber, the cylinder cover body is arranged in the coarse separation chamber and is provided with a coarse filter part for coarse filtering oil gas, and the cylinder cover body is arranged in the fine separation chamber and is provided with a fine filter component for fine filtering oil gas. The problem of cylinder head cover be difficult to separate fluid from waste gas in the engine is solved to this application.

Description

Oil-gas separation cylinder head cover

Technical Field

The application relates to the technical field of auto parts, in particular to an oil-gas separation cylinder head cover.

Background

When the internal combustion engine runs, more or less combustible mixture gas and burnt gas in the combustion chamber can enter a crankcase through a clearance between the piston group and the cylinder, and the clearance is called piston blow-by gas. Unburned HC and incomplete combustion products thereof, a small amount of harmful substances such as CO, NO and the like in piston blow-by gas are discharged in time, so that (1) the pressure of a crankcase is too high, and an engine leaks oil; (2) the deterioration of the engine oil is accelerated, and the lubricating performance of the engine is seriously influenced. To prevent the harm of crankcase emissions, the existing method is to use a positive crankcase ventilation system to suck the crankcase emissions into an air inlet pipe and then burn the crankcase emissions in a cylinder. Because the blowby gas is mixed with the oil mist in the crankcase, if the blowby gas is not separated in time, the engine oil enters the air inlet system to be combusted along with the blowby gas, the consumption of the engine oil of the engine is high, and meanwhile, phosphorus in the engine oil can pollute the catalyst, thereby influencing the emission of the engine.

The cylinder head cover of the engine mainly used for sealing the valve chamber is a thin-wall part with a larger mounting surface, is fixed at the top end of the engine and is mainly used for sealing the valve chamber.

In view of the above-mentioned related art, the inventors have considered that it is difficult for the cylinder head cover of the related art to separate oil from exhaust gas in the engine.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the cylinder head cover is difficult to separate oil from waste gas in the engine, the application provides an oil-gas separation cylinder head cover.

The application provides a pair of oil-gas separation cylinder head cover adopts following technical scheme:

an oil-gas separation cylinder head cover comprises a cylinder head cover body, wherein the cylinder head cover body is provided with a filter cavity, an oil-gas inlet for oil gas to enter the filter cavity and an oil-gas outlet for oil gas to be discharged from the filter cavity; the oil gas separation device comprises a filter chamber, a cylinder cover body and a cylinder cover body, wherein the filter chamber is arranged at one end close to an oil gas inlet and is arranged as a coarse separation chamber, the filter chamber is arranged at one end close to an oil gas outlet and is arranged as a fine separation chamber, the cylinder cover body is arranged in the coarse separation chamber and is provided with a coarse filter part for coarse filtering oil gas, and the cylinder cover body is arranged in the fine separation chamber and is provided with a fine filter component for fine filtering oil gas.

By adopting the technical scheme, the oil-gas separation cylinder head cover comprises a cylinder head cover body, wherein the cylinder head cover body is provided with a filter cavity, an oil-gas inlet and an oil-gas outlet, oil gas in an engine enters a rough separation cavity of the filter cavity from the oil-gas inlet and is subjected to preliminary separation by a rough filter, and oil liquid is preliminarily separated from the oil gas; the oil gas enters the fine separation cavity and is further separated by the fine filtering component, oil liquid is separated from the oil gas, and the oil gas after oil filtering is discharged from an oil gas outlet; through being equipped with coarse filter spare and fine filter spare to improve the efficiency that fluid in the oil gas was separated.

Optionally, the coarse filter element is a coarse filter plate, the coarse filter plate is inserted and fixed on the cylinder cover body, and the coarse filter plate is provided with a coarse filter hole for the oil gas to pass through.

Through adopting above-mentioned technical scheme, the coarse filtration piece is the coarse filtration board, has seted up coarse filtration hole on the coarse filtration board, and when oil gas passed through coarse filtration board, oil gas can strike on the coarse filtration board, and the coarse filtration board can adsorb some oil to the realization is to the initial gross separation of oil gas and fluid.

Optionally, a labyrinth plate is arranged between the coarse filter plate and the oil-gas inlet of the cylinder cover body, and a gap exists between the bottom of the labyrinth plate and the cylinder cover body.

Through adopting above-mentioned technical scheme, the cylinder shroud body is equipped with the labyrinth plate, and when oil gas got into the rough separation intracavity from the oil gas entry, oil gas shuttles back and forth in the labyrinth plate for the labyrinth plate can adsorb some fluid, plays the oil strain effect better to oil gas.

Optionally, a first baffle plate is arranged between the coarse filter plate and the labyrinth plate of the cylinder cover body.

Through adopting above-mentioned technical scheme, the cylinder casing body is located and is equipped with first baffle between the good volume labyrinth board of coarse filter board to make oil gas can strike on first baffle after coming out from the labyrinth board, thereby make first baffle can adsorb partial fluid, play the oil strain effect better to oil gas.

Optionally, a second baffle is arranged on one side, away from the labyrinth plate, of the cylinder cover body, where the rough filter plate is located, and a gap exists between the bottom of the second baffle and the cylinder cover body.

Through adopting above-mentioned technical scheme, the cylinder casing body is located one side that the labyrinth board was kept away from to the coarse filter board and is equipped with the second baffle to make oil gas can strike on the second baffle after wearing out from the coarse strainer hole of coarse filter board, thereby make the second baffle can adsorb partial fluid, play the oil strain effect better to oil gas.

Optionally, a third baffle plate is arranged on one side, away from the coarse filter plate, of the cylinder cover body, where the second baffle plate is located, and a gap exists between the top of the third baffle plate and the cylinder cover body.

Through adopting above-mentioned technical scheme, the cylinder hood body is equipped with the third baffle to make gas can strike on the third baffle, the third baffle can adsorb partial fluid, plays the oil strain effect better to oil gas.

Optionally, a first oil return port through which oil flows out is arranged between the first baffle and the second baffle of the cylinder cover body.

Through adopting above-mentioned technical scheme, the cylinder hood body is equipped with first oil return opening to make the fluid under first baffle and coarse strainer plate absorption can follow first oil return opening outflow filter chamber, make things convenient for the recycle of fluid.

Optionally, the fine filtering assembly comprises a fine filtering plate and filter cotton, the bottom of the fine filtering plate is inserted and fixed on the cylinder cover body, and the fine filtering plate is provided with a fine filtering hole for oil gas to pass through; the filter cotton is fixed on the end face, close to the oil gas outlet, of the fine filter plate.

Through adopting above-mentioned technical scheme, the essence is strained the subassembly and is included essence filter plate and filter pulp, and the essence filter plate is equipped with fine filtration hole, and when oil gas striking was on the essence filter plate, can be adsorbed partial fluid by the essence filter plate, and the oil gas that passes through from the fine filtration hole can be adsorbed by the filter pulp and filter, and after oil gas passed through the filter pulp, the fluid major part in the oil gas was separated to can be with the gas this moment from oil gas outlet discharge.

Optionally, the cylinder cover body is located in the fine separation cavity and is provided with a second oil return port through which oil flows out.

Through adopting above-mentioned technical scheme, the cylinder hood body is equipped with the second oil return opening to the fluid under through second baffle, third baffle and the absorption of essence filter plate can follow the second oil return opening and flow out from the filter chamber, makes things convenient for the recycle of fluid.

In summary, the present application includes at least one of the following beneficial technical effects:

1. oil gas in the engine enters the coarse separation cavity of the filter cavity from the oil gas inlet and is subjected to primary separation by the coarse filter, and oil liquid is primarily separated from the oil gas; the oil gas enters the fine separation cavity and is further separated by the fine filtering component, oil liquid is separated from the oil gas, and the oil gas after oil filtering is discharged from an oil gas outlet; the oil-liquid separation device is provided with the coarse filter element and the fine filter element, so that the oil-liquid separation efficiency in oil gas is improved;

2. the utility model provides an oil-gas separation cylinder head cover is equipped with first oil return mouth and second oil return mouth, and fluid can be collected to first oil return mouth and second oil return mouth, makes things convenient for the recycle of fluid.

Drawings

Fig. 1 is a structural sectional view of an oil-gas separation cylinder head cover in an embodiment of the present application.

Fig. 2 is an exploded view of the structure of an oil-gas separation cylinder head cover in the embodiment of the present application.

Fig. 3 is a bottom exploded view of the structure of an oil-gas separation cylinder head cover in the embodiment of the application.

Fig. 4 is an exploded view of the fine filter assembly.

Description of reference numerals: 1. an upper seat; 11. an oil gas outlet; 12. a plug-in part; 13. a labyrinth plate; 14. a second baffle; 2. a lower seat; 21. an oil gas inlet; 22. inserting grooves; 23. a first baffle plate; 24. coarse filter plate; 241. coarse filtration pore; 25. a third baffle plate; 26. fine filtering the plate; 261. a fine filtering seat; 2611. fine filtration pore; 2612. a clamping block; 262. oil passing plate; 2621. an oil passing hole; 27. filtering cotton; 28. a fixed seat; 281. a clamping arm; 29. a second oil return port; 210. a first oil return port; 3. a filter chamber; 31. a coarse separation chamber; 32. a fine separation chamber.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses oil-gas separation cylinder head cover. Referring to fig. 1 and 2, an oil-gas separation cylinder head cover comprises a cylinder head cover body, wherein the cylinder head cover body comprises an upper seat 1 and a lower seat 2, the upper seat 1 and the lower seat 2 are fixedly connected, and the upper seat 1 and the lower seat 2 form a filter cavity 3 for oil-gas separation. The lower seat 2 is provided with an oil gas inlet 21 for oil gas to enter the filter cavity 3, and the upper seat 1 is provided with an oil gas outlet 11 for oil gas to be discharged from the filter cavity 3. The one end that the filter chamber 3 is being close to oil gas entry 21 is crude separation chamber 31, and the one end that the filter chamber 3 is being close to oil gas export 11 is fine separation chamber 32, and the cylinder head cover body is located and is equipped with the coarse filtration spare that carries out the coarse filtration to oil gas in crude separation chamber 31, and the cylinder head cover body is located and is equipped with the essence subassembly that carries out the essence to oil gas in fine separation chamber 32.

The edge of the upper seat 1 at the bottom is provided with an inserting part 12, the lower seat 2 is provided with an inserting groove 22 for inserting the inserting part 12, and the inserting part 12 and the lower seat 2 are fixed through vibration friction welding.

Referring to fig. 1, 2 and 3, the upper seat 1 is integrally connected with labyrinth plates 13 at one end of the rough separation chamber 31 close to the oil-gas inlet 21, the number of the labyrinth plates 13 is four, and the four labyrinth plates 13 are arranged at intervals. The labyrinth plate 13 is arc-shaped along the direction of oil gas passage. When oil gas enters the rough separation cavity 31 from the oil gas inlet 21, the oil gas firstly collides with the labyrinth plate 13, the labyrinth plate 13 absorbs part of oil liquid, and the labyrinth plate 13 slows down the speed of the oil gas circulating in the filter cavity 3, so that the oil gas separation effect is enhanced.

The lower seat 2 is integrally connected with a first baffle plate 23 at one side of the labyrinth plate 13 close to the oil-gas outlet 11, and a gap exists between the top of the first baffle plate 23 and the inner wall of the upper seat 1. When oil gas strikes on the first baffle plate 23 from the oil gas, the first baffle plate 23 adsorbs part of oil liquid, so that the oil gas separation effect is enhanced.

The coarse filtering element is a coarse filtering plate 24, and the coarse filtering plate 24 is positioned on one side of the first baffle plate 23 far away from the oil gas inlet 21. The bottom of the coarse filter plate 24 is inserted into the lower seat 2 and fixed by glue, and the top surface of the coarse filter plate 24 is abutted against the inner wall of the upper seat 1. The coarse filter plate 24 is opened with a coarse filter hole 241 (not shown in the figure) through which oil gas passes. After oil gas passes through first baffle 23, oil gas can strike on coarse filter plate 24, and coarse filter plate 24 can adsorb partial oil gas to the realization is to the initial gross separation of oil gas. The interior bottom surface that lower 2 is located coarse separation chamber 31 is the inclined plane, and the lower one end of inclined plane height is connected on oil gas entry 21 to conveniently attach to the fluid on labyrinth plate 13, first baffle 23 and the coarse strainer plate 24 and can flow into oil gas entry 21, conveniently collect the utilization.

The upper seat 1 is located on one side of the coarse filter plate 24 far away from the first baffle plate 23 and is integrally connected with a second baffle plate 14, and a gap exists between the bottom of the second baffle plate 14 and the inner wall of the lower seat 2. After the oil gas passes through the rough filtering holes 241 of the rough filtering plate 24, the oil gas can impact on the second baffle plate 14, and the second baffle plate 14 adsorbs part of oil liquid, so that a better oil gas separation effect is achieved.

The lower seat 2 is located the second baffle 14 and keeps away from one side of thick filter plate 24 and is connected with third baffle 25 integratively, and there is the clearance at the top of third baffle 25 and upper berth 1. Through being equipped with third baffle 25 for oil gas can strike on third baffle 25, and third baffle 25 can adsorb some fluid, thereby plays the better separation effect to oil gas.

Referring to fig. 4, the fine filter assemblies are a fine filter plate 26 and filter cotton 27. The fine filter plate 26 includes a fine filter seat 261 and an oil passing plate 262, and the fine filter seat 261 and the oil passing plate 262 are vertically arranged. The top surface of the fine filter seat 261 abuts against the inner wall of the upper seat 1, the bottom of the fine filter seat 261 is connected with the oil passing plate 262, and the bottom of the oil passing plate 262 is fixed on the lower seat 2 through insertion. The filter cotton 27 is fixed on the fine filter seat 261 through a fixing seat 28. The side of the fine filtering seat 261 far away from the third baffle 25 is provided with a containing cavity for containing the filter cotton 27, and the lower end of the containing cavity is communicated with the fine separation cavity 32. The side of the fine filtering seat 261 close to the third baffle 25 is provided with a fine filtering hole 2611 (not shown in the figure) connected with the accommodating cavity. The end face of the fixed seat 28 is pressed against the filter cotton 27, and the fixed seat 28 keeps the filter cotton 27 embedded in the accommodating cavity. The fixing base 28 has two engaging arms 281, two opposite sides of the fine filter base 261 are respectively provided with an engaging block 2612 engaging with the engaging arms 281, and the engaging arms 281 are provided with engaging grooves for the engaging block 2612 to engage. The top surface of the oil passing plate 262 is provided with a plurality of oil passing holes 2621, the lower seat 2 is positioned below the oil passing plate 262 and is provided with a second oil return port 29, and the lower seat 2 is connected with an oil return valve for opening and closing the second oil return port 29. When oil gas strikes on the fine filter seat 261, the fine filter seat 261 can adsorb a part of oil, when the oil gas passes through the fine filter hole 2611 of the fine filter seat 261, the oil is absorbed by the filter cotton 27, gas rushes out from the lower end of the accommodating cavity, and the oil flows downwards through the oil passing hole 2621 of the oil plate 262 to the second oil return port 29.

The lower seat 2 is further opened with a first oil return port 210, and the first oil return port 210 is located between the fine filter plate 26 and the coarse filter plate 24. The oil liquid blocked by the third baffle 25 and the fine filtering seat 261 flows out from the first oil return port 210, so that the oil liquid is convenient to recycle.

The implementation principle of this application embodiment oil-gas separation cylinder head cover does: when oil gas enters the filter cavity 3 from the oil gas inlet 21, the oil gas sequentially passes through the labyrinth plate 13 and the first baffle plate 23 and then passes through the coarse filter plate 24 to be primarily filtered, the oil gas passes through the coarse filter holes 241 of the coarse filter plate 24 and then sequentially collides with the second baffle plate 14 and the third baffle plate 25, then passes through the fine filter holes 2611 of the fine filter seat 261 and absorbs oil liquid through the filter cotton 27, finally, gas is discharged from the oil gas outlet 11, and the separated oil liquid flows out of the filter cavity 3 through the oil liquid inlet, the first oil return port 210 and the second oil return port 29 respectively.

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

1. The utility model provides an oil-gas separation cylinder head cover which characterized in that: the cylinder head cover comprises a cylinder head cover body, wherein the cylinder head cover body is provided with a filter cavity (3), an oil gas inlet (21) for oil gas to enter the filter cavity (3) and an oil gas outlet (11) for oil gas to be discharged from the filter cavity (3); the oil gas purification device is characterized in that one end of the filter cavity (3) close to the oil gas inlet (21) is arranged to be a coarse separation cavity (31), one end of the filter cavity (3) close to the oil gas outlet (11) is arranged to be a fine separation cavity (32), the cylinder cover body is arranged in the coarse separation cavity (31) and is provided with a coarse filter for performing coarse filtration on oil gas, and the cylinder cover body is arranged in the fine separation cavity (32) and is provided with a fine filtration component for performing fine filtration on the oil gas.

2. The oil-gas separation cylinder head cover according to claim 1, characterized in that: the coarse filter element is a coarse filter plate (24), the coarse filter plate (24) is fixedly inserted on the cylinder cover body, and the coarse filter plate (24) is provided with a coarse filter hole (241) for the oil gas to pass through.

3. The oil-gas separation cylinder head cover according to claim 2, characterized in that: the cylinder cover body is positioned between the coarse filter plate (24) and the oil-gas inlet (21) and is provided with a labyrinth plate (13), and a gap exists between the bottom of the labyrinth plate (13) and the cylinder cover body.

4. The oil-gas separation cylinder head cover according to claim 3, characterized in that: the cylinder cover body is positioned between the coarse filter plate (24) and the labyrinth plate (13) and is provided with a first baffle plate (23).

5. The oil-gas separation cylinder head cover according to claim 4, characterized in that: the cylinder cover body is located one side, away from the labyrinth plate (13), of the coarse filter plate (24) and is provided with a second baffle plate (14), and a gap exists between the bottom of the second baffle plate (14) and the cylinder cover body.

6. The oil-gas separation cylinder head cover according to claim 5, characterized in that: and a third baffle plate (25) is arranged on one side, away from the coarse filter plate (24), of the cylinder cover body, of the second baffle plate (14), and a gap is formed between the top of the third baffle plate (25) and the cylinder cover body.

7. The oil-gas separation cylinder head cover according to claim 6, characterized in that: and a first oil return port (210) for allowing oil to flow out is formed between the first baffle plate (23) and the second baffle plate (14) of the cylinder cover body.

8. The oil-gas separation cylinder head cover according to claim 1, characterized in that: the fine filtering component comprises a fine filtering plate (26) and filtering cotton (27), the bottom of the fine filtering plate (26) is inserted and fixed on the cylinder cover body, and the fine filtering plate (26) is provided with a fine filtering hole (2611) for oil gas to pass through; the filter cotton (27) is fixed on the end face of the fine filter plate (26) close to the oil gas outlet (11).

9. The oil-gas separation cylinder head cover according to claim 8, characterized in that: and a second oil return opening (29) for oil to flow out is formed in the fine separation cavity (32) of the cylinder cover body.