CN113389618B - Respirator device of high-power diesel engine - Google Patents

Abstract

The invention provides a high-power diesel engine breather device which comprises an upper shell, a first middle shell, a second middle shell, a lower shell, an oil-gas inlet pipe, an upper baffle, a middle baffle, a lower baffle, a filter screen, a metal ring and a rear side plate, wherein the upper shell, the first middle shell, the second middle shell and the lower shell are sequentially connected from top to bottom to form an integral shell structure of the breather, and an air inlet channel and a filtering cavity are formed inside the breather; a rear side plate is arranged on the rear side of the integral shell structure and used for conveniently disassembling the filter screen and the metal ring; the filter screen is installed at the bottom of the upper shell, the middle baffle is arranged between the first middle shell and the second middle shell, the lower baffle is arranged between the second middle shell and the lower shell, and a plurality of metal rings are filled between the middle baffle and the lower baffle. A large amount of iron or aluminum metal rings are filled in the respirator body, so that the oil-gas circulation area is increased, and the oil-gas separation effect is greatly improved.

Description

Respirator device of high-power diesel engine

Technical Field

The invention belongs to the technical field of engine accessories, and particularly relates to a respirator device of a high-power diesel engine.

Background

When the engine works, a part of combustible mixture and waste gas can flow into the crankcase through the cylinder by the piston ring, the pressure of the waste gas in the crankcase is increased, engine oil can seep out from the crankshaft oil seal, the inner liner of the crankcase and the like, and engine oil steam in the atmosphere can pollute the atmosphere. The engine breather is communicated with the crankcase, the internal pressure balance of the engine and the external pressure can be guaranteed and the effective separation of oil gas can be realized under the action of the breather, the separated oil returns to the inside of the diesel engine box, the gas is led to the atmosphere, and the pollution degree is greatly reduced.

At present, a high-power diesel engine breather is widely applied to a breather with a labyrinth structure or a breather with a built-in filter screen structure, a passage through which oil gas flows is generally in a labyrinth form, a baffle is additionally arranged in the labyrinth passage, and the oil gas meets the baffle to form granular liquid engine oil which flows back to an oil sump along the baffle. The respirator with the built-in filter screen structure is generally filled with one or two layers of steel wire meshes, so that large-particle liquid engine oil can be filtered. However, the two respirators have limited separation effect, especially after the engine runs for ten thousand kilometers, a large amount of engine oil or the deterioration of the engine oil is adhered to the baffle and the filter screen of the labyrinth, the respirator has poorer oil-gas separation effect, and the baffle, the filter screen and the like of the labyrinth are difficult to change.

Disclosure of Invention

In view of this, the present invention is directed to a respirator device for a high power diesel engine, so as to improve the oil-gas separation effect and facilitate maintenance.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a high-power diesel engine breather device comprises an upper shell, a first middle shell, a second middle shell, a lower shell, an oil gas inlet pipe, an upper baffle, a middle baffle, a lower baffle, a filter screen, a metal ring, a rear side plate, a breather oil return pipe and a breather fixing seat, wherein the upper shell, the first middle shell, the second middle shell and the lower shell are sequentially connected from top to bottom to form an integral shell structure of the breather, and an air inlet channel and a filtering cavity are formed inside the breather; a rear side plate is arranged on the rear side of the integral shell structure and used for conveniently disassembling the filter screen and the metal ring; an oil gas inlet pipe communicated with the air inlet channel is mounted at the top of the upper shell, and a breather exhaust pipe communicated with the filtering cavity is mounted on the upper shell; a filter screen is arranged at the bottom of the upper shell, an intermediate baffle is arranged between the first intermediate shell and the second intermediate shell, a lower baffle is arranged between the second intermediate shell and the lower shell, and a plurality of metal rings are filled between the intermediate baffle and the lower baffle; and an oil return pipe and a respirator fixing seat are arranged at the bottom of the lower shell.

Furthermore, the first middle shell is a reserved shell, and the metal ring is filled according to the oil-gas separation effect of the respirator.

Furthermore, an upper baffle is arranged between the upper shell and the first middle shell.

Further, the metal ring is of an annular structure and is an aluminum ring or a stainless steel ring.

Further, the upper shell, the first middle shell, the second middle shell and the lower shell are fastened and connected in sequence through penetrating screws.

Compared with the prior art, the invention has the following advantages:

(1) a large number of iron or aluminum metal rings are filled in the breather body, oil gas in the engine box body enters the breather and passes through the large number of irregularly arranged metal rings, the large number of irregularly arranged metal rings increase the flow area of the oil gas, the wall-hanging effect is enhanced, more engine oil is retained on the inner wall and the outer part of the metal rings and finally flows back to the oil pan, and the oil-gas separation effect is greatly improved.

(2) The top of the breather still retains a steel wire mesh structure, so that residual oil and gas can be further separated.

(3) The respirator is compact in structure and convenient to assemble and disassemble; after the respirator works for a certain mileage, the side plate is detached, the metal ring and the filter screen can be easily taken out, the original respirator can be loaded again after residual engine oil on the surfaces of the metal ring and the filter screen is cleaned, maintenance is convenient, and raw materials are saved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a respirator device for a high-power diesel engine according to an embodiment of the invention.

Fig. 2 is a schematic view of a metal ring structure according to an embodiment of the present invention.

Description of reference numerals:

1. the oil gas inlet pipe comprises an oil gas inlet pipe, 2 parts of penetrating screws, 3 parts of an upper shell, 4 parts of baffle plates, 5 parts of a first middle shell, 6 parts of middle baffle plates, 7 parts of a second middle shell, 8 parts of a lower baffle plate, 9 parts of a lower shell, 10 parts of a respirator fixing seat, 11 parts of a respirator fixing seat screw, 12 parts of an oil return pipe, 13 parts of a respirator exhaust pipe, 14 parts of a metal ring, 15 parts of a rear side plate, 16 parts of an exhaust pipe screw, 17 parts of a filter screen, 18 parts of oil gas inlet pipe screws, 19 parts of oil return pipe fastening screws and 20 parts of rear side plate fastening screws.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified 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 by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

A high-power diesel engine respirator device is shown in figures 1 and 2 and comprises an upper shell 3, a first middle shell 5, a second middle shell 7, a lower shell 9, an oil gas inlet pipe 1, an upper baffle 4, a middle baffle 6, a lower baffle 8, a filter screen 17, a metal ring 14, a side plate 15, a respirator oil return pipe 12 and a respirator fixing seat 10,

the upper shell 3, the first middle shell 5, the second middle shell 7 and the lower shell 9 are sequentially connected from top to bottom to form an integral shell structure of the respirator, and an air inlet channel and a filtering cavity are formed inside the integral shell structure; the upper casing 3, the first intermediate casing 5, the second intermediate casing 7, and the lower casing 9 are fastened and coupled in this order by the through screws 2.

The rear side of the integral shell structure is provided with a rear side plate 15 corresponding to the position of the filter cavity, the rear side plate 15 is the rear wall of the whole shell of the respirator, the rear side plate 15 can be detached after the fastening screw 20 of the rear side plate is taken down, and the internal filter screen 17 and the metal ring 14 can be taken out. The rear side plate 15 is fastened by a rear side plate fastening screw.

The top of the upper shell 3 is provided with an oil gas inlet pipe 1 communicated with the air inlet channel, and the oil gas inlet pipe 1 is a communicating pipe of an engine crankcase and a breather, so that oil gas of the engine crankcase normally enters the breather. The oil gas inlet pipe 1 is fastened through an oil gas inlet pipe screw 18.

The bottom of the upper shell 3 is provided with the filter screen 17, the filter screen 17 can filter residual unseparated oil gas, is a second separation layer of the respirator and can also protect the interior of the respirator from being polluted by impurities such as external dust and the like.

The upper shell 3 is provided with a breather exhaust pipe 13 communicated with the filtering cavity, and the breather exhaust pipe 13 is used for leading separated pollution-free gas to the outside through the breather exhaust pipe 13 after oil gas is separated by the breather. The exhaust tube screw 16 is used to fasten the respirator exhaust tube 13.

An intermediate baffle 6 is arranged between the first intermediate shell 5 and the second intermediate shell 7, a lower baffle 8 is arranged between the second intermediate shell 7 and the lower shell 9, and a plurality of metal rings 14 are filled between the intermediate baffle 6 and the lower baffle 8; the function of the intermediate baffle 6 is to limit the metal ring 14, prevent the metal ring 14 from entering the first intermediate shell 5, and reduce the vibration and noise of the metal ring 14. The lower baffle 8 is used for limiting the metal ring 14 and preventing the metal ring 14 from entering the lower shell 9.

An oil return pipe 12 is installed at the bottom of the lower shell 9, and the oil return pipe 12 guides the engine oil separated by the breather into an oil pan. The return pipe 12 is fastened by a return pipe fastening screw 19.

The bottom of the lower shell 9 is also provided with a respirator fixing seat 10, and the respirator fixing seat 10 is an installation interface of a respirator and an engine and plays a role in connection and support. The respirator and the engine are tightly connected through the respirator fixing seat screw 11.

The first middle shell 5 is a reserved shell, and more metal rings 14 can be properly filled according to the oil-gas separation effect of the respirator.

Set up overhead gage 4 between upper casing 3, the first middle casing 5, overhead gage 4's effect is auxiliary stay filter screen 17, makes filter screen 17 fixed in position.

The metal ring 14 is of an annular structure, and can be an aluminum ring or a stainless steel ring with a light material, and the material with the wall thickness as thin as possible is selected during design.

The upper shell 3 is a hollow shell, and is provided with a port for installing the filter screen 17 and an oil-gas flow passage.

The second intermediate housing 7 is a filled space and oil-gas flow passage that provide the metal ring 14.

The lower shell 9 is used for collecting the oil-gas separated engine oil, and the oil flows back to the engine oil pan through the oil return pipe 12.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. A high-power diesel engine respirator device which characterized in that: comprises an upper shell (3), a first middle shell (5), a second middle shell (7), a lower shell (9), an oil gas inlet pipe (1), an upper baffle (4), a middle baffle (6), a lower baffle (8), a filter screen (17), a metal ring (14), a rear side plate (15), a respirator oil return pipe (11) and a respirator fixing seat (10),

the upper shell (3), the first middle shell (5), the second middle shell (7) and the lower shell (9) are sequentially connected from top to bottom to form an integral shell structure of the respirator, and an air inlet channel and a filtering cavity are formed inside the integral shell structure;

a rear side plate (15) is arranged at the rear side of the integral shell structure and is used for conveniently disassembling the filter screen (17) and the metal ring (14);

an oil gas inlet pipe (1) communicated with the air inlet channel is arranged at the top of the upper shell (3), and a breather exhaust pipe (13) communicated with the filtering cavity is arranged on the upper shell (3);

a filter screen (17) is installed at the bottom of the upper shell (3), a middle baffle (6) is arranged between the first middle shell (5) and the second middle shell (7), a lower baffle (8) is arranged between the second middle shell (7) and the lower shell (9), and a plurality of metal rings (14) are filled between the middle baffle (6) and the lower baffle (8);

and an oil return pipe (12) and a respirator fixing seat (10) are arranged at the bottom of the lower shell (9).

2. A high power diesel engine breather device according to claim 1, wherein: the first middle shell (5) is a reserved shell, and a metal ring (14) is filled according to the oil-gas separation effect of the respirator.

3. A high power diesel engine breather device according to claim 1, wherein: an upper baffle (4) is arranged between the upper shell (3) and the first middle shell (5).

4. A high power diesel engine breather device according to claim 1, wherein: the metal ring (14) is of an annular structure and is an aluminum ring or a stainless steel ring.

5. A high power diesel engine breather device according to claim 1, wherein: the upper shell (3), the first middle shell (5), the second middle shell (7) and the lower shell (9) are fastened and connected in sequence through penetrating screws (2).

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