Blowout prevention engine oil ventilation chamber cover and crankcase body

Abstract

The utility model relates to a blowout prevention engine oil ventilation chamber cover and a crankcase body, the ventilation chamber cover comprises a cover body matched with a crankcase breathing chamber, the cover body is provided with a cavity, the cavity is internally provided with an air inlet cavity, a first labyrinth channel, an air outlet cavity and an oil return cavity, the air inlet cavity is communicated with the air outlet cavity through the first labyrinth channel, and the oil return cavity is communicated with the air outlet cavity through the second labyrinth channel. According to the ventilation chamber cover, a plane cover face in the prior art is designed into the cover body with the cavity, so that when the ventilation chamber cover is installed on a breathing chamber, the capacity of the breathing chamber on the crankcase body is larger, more oil mist mixed gas can be contained, and the ventilation chamber cover is more convenient to use. When the one-way valve plate is opened, engine oil in oil mist mixed gas can be better precipitated, engine oil discharged from the gas outlet is reduced, the effect of preventing engine oil from being sprayed is achieved, and engine oil consumption is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines and relates to an anti-spray oil ventilation chamber cover and a crankcase body. Background Art

[0002] The crankcase, also called the engine casing, is the carrier of all engine parts. The main function of the crankcase is to carry the crankshaft, camshaft, piston and other components for high-speed operation. When the engine is started, the crank-connecting rod mechanism runs at high speed, and the piston is constantly in the intake, compression, power and exhaust strokes.

[0003] During the operation of the engine, the high-pressure gas in the combustion chamber on the top of the piston will leak into the crankcase through the gap between the piston ring and the cylinder liner, and together with the splashing lubricating oil from the lubrication system, a pressurized exhaust gas-oil mist mixture is formed. The pressurized oil mist mixture is prone to oil leakage in the crankcase. If these gases are directly discharged into the atmosphere, it will pollute the environment. The breathing chamber can help treat these gases, collect the oil in them and return it to the oil pan to reduce oil consumption. The treated exhaust gas is introduced into the intake pipe and reburned, making the exhaust gas more environmentally friendly; the existing ventilation cavity on the crankcase is connected to a flat cover to form a breathing chamber. The volume of the ventilation chamber is small, resulting in a slow precipitation of the oil mist mixture in the breathing chamber. The exhaust gas flowing out of the breathing chamber will carry a large number of oil droplets into the intake pipe, causing the problem of oil spraying. Utility Model Content

[0004] The utility model aims to solve the above problems in the prior art and proposes an anti-spray oil venting chamber cover and a crankcase.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a blowout prevention oil breather chamber cover, characterized in that it includes a cover body used to match the crankcase breathing chamber, the cover body is provided with a chamber, the chamber is provided with an air inlet chamber, a first labyrinth channel, an air outlet chamber and an oil return chamber, the air inlet chamber and the air outlet chamber are connected through the first labyrinth channel, and the air outlet chamber is provided with a through hole for connecting to the oil return chamber.

[0006] In the above-mentioned anti-spray oil breather chamber cover and engine, the first maze channel includes a first baffle, a second baffle and a third baffle, a first channel is formed between the first baffle and the second baffle, a second channel is formed between the second baffle and the third baffle, and a notch is formed on the second baffle.

[0007] In the above-mentioned blowout preventer oil breather chamber cover and engine, the cover body includes a first cover body, a second cover body and a connecting portion, and the connecting portion is used to connect the first cover body and the second cover body.

[0008] In the above-mentioned blowout prevention oil breather chamber cover and engine, the first cover body is provided with an obstacle avoidance groove which is curved in an arc shape toward one side of the chamber.

[0009] In the above-mentioned blowout preventer oil breather chamber cover and engine, the first cover body, the second cover body and the connecting part are integrally formed.

[0010] In the above-mentioned blowout prevention oil breather chamber cover and engine, the first cover body is also provided with a first mounting hole.

[0011] In the above-mentioned blowout prevention oil breather chamber cover and engine, a downwardly collapsed step is provided on the corner of the second cover body, and a second mounting hole is opened on the step.

[0012] A blowout-proof crankcase includes a crankcase body, a breathing chamber is provided on the crankcase body, a ventilation chamber cover is provided on the breathing chamber, a second labyrinth channel matching the first labyrinth channel is provided in the breathing chamber, an air inlet is also provided on the crankcase body, the air inlet is communicated with the air inlet cavity, and an oil return hole and an air outlet are also provided on the crankcase body.

[0013] Compared with the prior art, the utility model designs the flat cover surface in the prior art into a cover body with a cavity, so that when the modified ventilation chamber cover is installed on the breathing chamber, the breathing chamber capacity on the crankcase body is larger and can accommodate more oil mist mixture, so that when the one-way valve plate is opened, the oil droplets in the oil mist mixture can be better precipitated, reducing the oil discharged from the air outlet, thereby achieving the effect of preventing oil spraying; the setting of the maze channel can extend the passing path of the oil mist mixture, and at the same time, can make the oil droplets collide with and adhere to the inner wall of the maze channel when passing through, thereby reducing the oil content in the oil-gas mixture and further improving the effect of preventing oil spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is the front view of the utility model;

[0016] Figure 3 It is a side view of the utility model;

[0017] Figure 4 This is a schematic diagram of the installation of the ventilation chamber cover and the crankcase body of the utility model;

[0018] Figure 5 This is a schematic diagram of the crankcase body structure of the utility model;

[0019] Figure 6 yes Figure 5Enlarged view of point A in the middle.

[0020] In the figure, 1, cover body; 101, first cover body; 102, second cover body; 103, connecting part; 2, chamber; 21, air inlet chamber; 22, air outlet chamber; 23, oil return chamber; 3, first labyrinth passage; 31, first baffle plate; 32, second baffle plate; 33, third baffle plate; 4, first channel; 5, second channel; 6, obstacle avoidance groove; 7, first mounting hole; 8, second mounting hole; 9, breathing chamber; 10, crankcase body; 11, air inlet; 13, through hole; 14, oil return hole; 15, second labyrinth passage; 16, air outlet hole. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Example

[0022] like Figures 1 to 6 As shown, a blowout prevention oil breather chamber cover includes a cover body 1 that matches the breathing chamber 9 of the crankcase, the cover body 1 includes a first cover body 101, a second cover body 102 and a connecting portion 103, the connecting portion 103 is used to connect the first cover body 101 and the second cover body 102, and the first cover body 101, the second cover body 102 and the connecting portion 103 are integrally formed.

[0023] A chamber 2 is provided on the cover body 1. The design of the chamber 2 enables the internal volume of the breathing chamber 9 to be larger when the cover body 1 is installed on the crankcase. An air inlet chamber 21, a first labyrinth channel 3, an air outlet chamber 22 and an oil return chamber 23 are provided in the chamber 2. The air inlet chamber 21 is connected to the air outlet chamber 22 through the first labyrinth channel 3. A through hole 13 for connecting to the oil return chamber 23 is provided on the air outlet chamber 22. The setting of the through hole 13 enables the oiler to enter the oil return chamber 23 from the air outlet chamber 22 and return the oil to the crankcase from the oil return hole 14 of the oil return chamber 23, which can avoid the waste of engine oil and reduce the oil content in the oil mist mixture.

[0024] The first labyrinth channel 3 comprises a first baffle plate 31, a second baffle plate 32 and a third baffle plate 33, a first channel 4 is formed between the first baffle plate 31 and the second baffle plate 32, a second channel 5 is formed between the second baffle plate 32 and the third baffle plate 33, a notch is provided on the second baffle plate, when the cover body 1 is installed on the crankcase, the first labyrinth channel 3 overlaps with the second labyrinth channel 1512, at this time the notch is used to connect the through hole 13 of the oil return chamber 23 and the air outlet chamber 22.

[0025] The first cover body 101 is provided with an obstacle avoidance groove 6 which is curved in an arc shape toward one side of the chamber 2. For the rationality of the design, the obstacle avoidance groove 6 is used to facilitate the embedding of the carburetor pipeline.

[0026] Furthermore, the first cover body 101 is also provided with a first mounting hole 7 .

[0027] In addition, the corners of the second cover body 102 are provided with downwardly collapsed steps, and the steps are provided with second mounting holes 8. The staff drives bolts into the first mounting holes 7 and the second mounting holes 8 to facilitate the installation of the cover body 1 on the crankcase.

[0028] A blowout-proof crankcase includes a crankcase body 10, wherein the crankcase body 10 is provided with a breathing chamber 9, wherein the breathing chamber 9 is provided with a ventilation chamber cover, wherein the breathing chamber 9 is provided with a second labyrinth channel 1512 matching the first labyrinth channel 3, wherein the crankcase body 10 is also provided with an air inlet, wherein the air inlet is communicated with the air inlet cavity 21, and wherein the crankcase body 10 is also provided with an oil return hole 14 and an air outlet hole 16.

[0029] The utility model designs the flat cover surface in the prior art into a cover body 1 with a chamber 2, so that when the modified ventilation chamber cover is installed on the breathing chamber 9, the breathing chamber 9 on the crankcase body 10 has a larger capacity and can accommodate more oil mist mixture, so that when the one-way valve plate of the oil mist mixture is opened, the engine oil droplets in the oil mist mixture can be better precipitated, and the engine oil droplets in the oil mist mixture are reduced from being discharged from the air outlet, thereby achieving the effect of preventing engine oil spraying; the setting of the labyrinth channel can extend the passing path of the oil mist mixture, and at the same time, the engine oil droplets in the oil mist mixture can collide with and adhere to the inner wall of the labyrinth channel when passing through, thereby reducing the engine oil base in the oil mist mixture and further improving the effect of preventing engine oil spraying.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A blowout prevention oil breather cover, characterized in that: The invention comprises a cover body (1) matched with a crankcase breathing chamber (9), the cover body (1) being provided with a chamber (2), the chamber (2) being provided with an air inlet chamber (21), a first labyrinth passage (3), an air outlet chamber (22) and an oil return chamber (23), the air inlet chamber (21) being connected with the air outlet chamber (22) via the first labyrinth passage (3), and the air outlet chamber (22) being provided with a through hole (13) for connecting with the oil return chamber (23).

2. The oil blowout prevention breather chamber cover according to claim 1, characterized in that: The first labyrinth passage (3) comprises a first baffle (31), a second baffle (32) and a third baffle (33); a first passage (4) is formed between the first baffle (31) and the second baffle (32); a second passage (5) is formed between the second baffle (32) and the third baffle (33); and a notch is provided on the second baffle (32).

3. The oil blowout prevention breather chamber cover according to claim 2, characterized in that: The cover body (1) comprises a first cover body (101), a second cover body (102) and a connecting portion (103), wherein the connecting portion (103) is used to connect the first cover body (101) and the second cover body (102).

4. The blowout preventer oil breather cover according to claim 3, characterized in that: The first cover body (101) is provided with an obstacle avoidance groove (6) which is curved in an arc shape toward one side of the chamber (2).

5. The oil blowout prevention breather chamber cover according to claim 4, characterized in that: The first cover body (101), the second cover body (102) and the connecting portion (103) are integrally formed.

6. The blowout preventer oil breather cover according to claim 5, characterized in that: The first cover body (101) is also provided with a first mounting hole (7).

7. The blowout preventer oil breather cover according to claim 6, characterized in that: A downwardly collapsed step is provided on the corner of the second cover body (102), and a second mounting hole (8) is opened on the step.

8. A blowout-proof crankcase, characterized in that: The invention comprises a crankcase body (10), wherein a breathing chamber (9) is arranged on the crankcase body (10), wherein a ventilation chamber cover according to any one of claims 1 to 7 is arranged on the breathing chamber (9), wherein a second labyrinth channel (15) matching the first labyrinth channel (3) is arranged in the breathing chamber (9), wherein an air inlet (11) is also arranged on the crankcase body (10), wherein the air inlet is connected to the air inlet cavity (21), and wherein an oil return hole (14) and an air outlet hole (16) are also arranged on the crankcase body (10).

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