Engine oil-gas separation labyrinth structure

Abstract

The utility model discloses an engine oil-gas separation labyrinth structure which comprises a left box body and a right box body which are connected together, and a sealing gasket is arranged between the left box body and the right box body. A left separation cavity and a right separation cavity are correspondingly formed in the left box body and the right box body respectively, an exhaust pipe communicated with the left separation cavity is arranged on the left box body, a center boss is arranged in the middle of the left separation cavity of the left box body, and a partition plate I, a partition plate II, a partition plate III, a partition plate IV, a partition plate V and a partition plate VI are further arranged. And the left separation cavity is divided into a separation cavity I, a separation cavity II, a separation cavity III, a separation cavity IV, a separation cavity V, a separation cavity VI and a separation cavity VII. By optimizing the direction and the number of the partition plates, prolonging the exhaust path and improving collision between oil and gas and the partition plates and the wall of the separation cavity, engine oil condensation is improved, the oil-gas separation effect is improved, the engine oil content in exhausted gas is reduced, and the oil-gas separator is more environment-friendly and saves engine oil.

Description

Technical Field

[0001] The utility model relates to the technical field of engine oil-gas separation channels, in particular to an engine oil-gas separation labyrinth structure. Background Art

[0002] At present, the oil and gas in the engine crankcase are generally discharged through a labyrinth channel structure arranged on the case body. In order to reduce the oil content in the exhaust gas and reduce the oil loss, an oil-gas separation device is often connected to the exhaust pipe outlet end. However, the oil separated by the external oil-gas separation device is difficult to recover and cannot automatically flow back to the crankcase, which is inconvenient to use. Therefore, the prior art strengthens the condensation of oil in the gas by arranging a labyrinth channel structure on the case body, thereby reducing the oil loss. However, the current labyrinth channel is relatively simple, and only a number of partitions are arranged to improve the oil condensation efficiency in the exhaust by extending the exhaust path. In actual use, since the exhaust pipe is no longer connected to an external oil-gas separation device, its open exhaust port is easy to form a suction effect on the labyrinth channel structure, which reduces the oil-gas separation effect of the existing labyrinth channel structure, and the use effect is not ideal, and there is still a high oil content in the exhaust. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide an engine oil-gas separation maze structure to solve the problem of poor oil-gas separation effect in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: an engine oil-gas separation maze structure, comprising a left box body and a right box body connected together, a sealing gasket is provided between the left box body and the right box body; a left separation chamber and a right separation chamber are respectively provided in the left box body and the right box body, and a connecting hole connecting the left separation chamber and the right separation chamber is opened on the sealing gasket between the left separation chamber and the right separation chamber; an exhaust pipe communicating with the left separation chamber is provided on the left box body, and an oil-gas inlet hole communicating with the right separation chamber is provided on the right box body;

[0005] The invention is characterized in that a central boss and partitions I, II, III, IV, V and VI are provided in the middle of the left separation chamber of the left box body, so as to divide the left separation chamber into separation chamber I, separation chamber II, separation chamber III, separation chamber IV, separation chamber V, separation chamber VI and separation chamber VII;

[0006] Among them, the partition I, partition IV and the side wall of the left separation cavity enclose a separation cavity I that is directly opposite to the communication hole on the gasket. One end of the partition I is connected to the central boss, and the other end extends in a direction away from the exhaust pipe and has a spacing from the side wall of the left separation cavity. One end of the partition II is connected to the side wall of the left separation cavity on the side relative to the exhaust pipe, and the other end extends in a direction away from the separation cavity I, passes through the spacing between the partition I and the side wall of the left separation cavity, and has a spacing from the side wall of the left separation cavity; One end of the partition III is connected to the central boss, and the other end passes through the spacing between the partition II and the side wall of the left separation cavity, bends in a direction close to the exhaust pipe and is connected to the side wall of the left separation cavity, so that a separation cavity II is formed between the partition I, partition II and partition III, and a separation cavity III is formed between the partition II, partition III and the side wall of the left separation cavity. A separation cavity IV is formed between the side wall of the left separation cavity on the side where the partition III faces away from the partition II; Among them, a channel I for communicating the separation cavity I and the separation cavity II is formed between the end of the partition I far from the central boss and the partition II, and a channel II for communicating the separation cavity II and the separation cavity III is formed between the end of the partition II far from the side wall of the left separation cavity and the partition III. A groove I is provided at one end of the partition III close to the side wall of the left separation cavity, and the groove I and the gasket form a channel III for communicating the separation cavity III and the separation cavity IV;

[0007] The partition IV is located on the side of the partition I facing away from the partition II. One end of it is connected to the central boss, and the other end is connected to the side wall of the left separation cavity. And a groove II is provided at one end of the partition IV close to the central boss. The partition V is located on the side of the partition IV facing away from the partition I. One end of it is connected to the central boss, and the other end bends in a direction close to the partition IV and has a spacing from the partition IV. The partition VI is located on the side of the partition V facing away from the partition IV. One end of it is connected to the side wall of the left separation cavity, and one end extends in a direction away from the exhaust pipe and has a spacing from both the central boss and the side wall of the left separation cavity, so that a separation cavity V is enclosed by the partition IV and the partition V, a separation cavity VI is enclosed by the partition V and the partition VI, and a separation cavity VII is enclosed by the partition VI and the side wall of the left separation cavity; Among them, the groove II and the gasket form a channel IV for communicating the separation cavity I and the separation cavity V; The spacing between the partition V and the partition IV forms a channel V for communicating the separation cavity V and the separation cavity VI; The spacing between the partition VI and the central boss forms a channel VI for communicating the separation cavity VI and the separation cavity IV, and the spacing between the partition VI and the side wall of the left separation cavity forms a channel VII for communicating the separation cavity IV and the separation cavity VII. The exhaust pipe is connected to the separation cavity VII.

[0008] As an optimization, the central boss, partition I, partition II, partition III, partition IV, partition V, partition VI and the left box body are integrally formed.

[0009] As an optimization, the end of the partition V bends in a direction close to the partition IV to form a lip I, and the projection of the partition V on the partition IV completely covers the groove II.

[0010] As an optimization, the end of the partition VI is bent towards the center boss to form a lip II, so that the channels VI and VII form flared channels with opposite flaring directions.

[0011] As an optimization, the part of the separation cavity I facing the communication hole on the gasket, the part of the separation cavity IV close to the partition VI, and the depths of the separation cavities V, VI, and VII are greater than those of the other part of the separation cavity I and the separation cavity VI, and the separation cavities II and III, so that steps are respectively formed in the separation cavities I and IV.

[0012] Compared with the prior art, the utility model has the following advantages: By optimizing the direction and quantity of the partitions, the exhaust path is extended, the collision between the oil-gas and the partitions and the separation cavity wall is improved, thereby improving the oil condensation, enhancing the oil-gas separation effect, reducing the oil content in the exhaust, being more environmentally friendly and saving oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view structural schematic diagram of the left box body in the utility model;

[0014] Figure 2 is Figure 1 the partial enlarged view in

[0015] Figure 3 It is the installation schematic diagram of the gasket in the utility model;

[0016] Figure 4 It is the overall assembly structural schematic diagram of the utility model;

[0017] In the figure: 1 left box body, 2 right box body, 3 gasket, 4 communication hole, 5 exhaust pipe, 6 oil-gas inlet hole, 7 center boss, 8 partition I, 9 partition II, 10 partition III, 11 partition IV, 12 partition V, 13 partition VI, 14 separation cavity I, 15 separation cavity II, 16 separation cavity III, 17 separation cavity IV, 18 separation cavity V, 19 separation cavity VI, 20 separation cavity VII, 21 groove I, 22 groove II, 23 channel I, 24 channel II, 25 channel V, 26 channel VI, 27 channel VII, 28 lip I, 29 lip II, 30 step. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will further illustrate the utility model in conjunction with the drawings and embodiments.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example: Refer to Figures 1-4, an engine oil-gas separation labyrinth structure, comprising a left box body 1 and a right box body 2 which are snap-connected together, and a gasket 3 is arranged between the left box body 1 and the right box body 2; a left separation cavity and a right separation cavity are respectively arranged corresponding to the left box body 1 and the right box body 2, and a communication hole 4 for communicating the left separation cavity and the right separation cavity is opened on the gasket 3 between the left separation cavity and the right separation cavity; an exhaust pipe 5 communicating with the left separation cavity is arranged on the left box body 1, and an oil-gas inlet hole 6 communicating with the right separation cavity is arranged on the right box body 2;

[0022] It is characterized in that a central boss 7, a partition plate I 8, a partition plate II 9, a partition plate III 10, a partition plate IV 11, a partition plate V 12 and a partition plate VI 13 are arranged in the middle of the left separation cavity of the left box body 1, and the left separation cavity is divided into a separation cavity I 14, a separation cavity II 15, a separation cavity III 16, a separation cavity IV 17, a separation cavity V 18, a separation cavity VI 19 and a separation cavity VII 20;

[0023] Among them, the partition plate I 8, the partition plate IV 11 and the side wall of the left separation cavity enclose a separation cavity I 14 facing the communication hole 4 on the gasket 3. One end of the partition plate I 8 is connected to the central boss 7, and the other end extends in a direction away from the exhaust pipe 5 and has a spacing from the side wall of the left separation cavity. One end of the partition plate II 9 is connected to the side wall of the left separation cavity on the side relative to the exhaust pipe 5, and the other end extends in a direction away from the separation cavity I 14 and passes through the spacing between the partition plate I 8 and the side wall of the left separation cavity and has a spacing from the side wall of the left separation cavity; one end of the partition plate III 10 is connected to the central boss 7, and the other end passes through the spacing between the partition plate II 9 and the side wall of the left separation cavity and bends in a direction close to the exhaust pipe 5 and then is connected to the side wall of the left separation cavity, so that a separation cavity II 15 is formed between the partition plate I 8, the partition plate II 9 and the partition plate III 10, a separation cavity III 16 is formed between the partition plate II 9, the partition plate III 10 and the side wall of the left separation cavity, and a separation cavity IV 17 is formed between the side wall of the left separation cavity on the side where the partition plate III 10 faces away from the partition plate II 9; among them, a channel I 23 for communicating the separation cavity I 14 and the separation cavity II 15 is formed between the end of the partition plate I 8 far from the central boss 7 and the partition plate II 9, a channel II 24 for communicating the separation cavity II 15 and the separation cavity III 16 is formed between the end of the partition plate II 9 far from the side wall of the left separation cavity and the partition plate III 10, and a groove I 21 is opened at the end of the partition plate III 10 close to the side wall of the left separation cavity, and the groove I 21 and the gasket 3 form a channel III for communicating the separation cavity III 16 and the separation cavity IV 17;

[0024] The baffle IV 11 is located on the side of the baffle I 8 away from the baffle II 9. One end of it is connected to the central boss 7, and the other end is connected to the side wall of the left separation chamber. And a groove II 22 is provided at one end of the baffle IV 11 close to the central boss 7. The baffle V 12 is located on the side of the baffle IV 11 away from the baffle I 8. One end of it is connected to the central boss 7, and the other end is bent towards the direction close to the baffle IV 11 and has a spacing from the baffle IV 11. The baffle VI 13 is located on the side of the baffle V 12 away from the baffle IV 11. One end of it is connected to the side wall of the left separation chamber, and one end extends in the direction away from the exhaust pipe 5 and has a spacing from both the central boss 7 and the side wall of the left separation chamber, so that the baffle IV 11 and the baffle V 12 enclose the separation chamber V 18, the baffle V 12 and the baffle VI 13 enclose the separation chamber VI 19, and the baffle VI 13 and the side wall of the left separation chamber enclose the separation chamber VII 20; wherein, the groove II 22 and the gasket 3 form a passage IV through which the separation chamber I 14 is communicated with the separation chamber V 18; the spacing between the baffle V 12 and the baffle IV 11 forms a passage V 25 through which the separation chamber V 18 is communicated with the separation chamber VI 19; the spacing between the baffle VI 13 and the central boss 7 forms a passage VI 26 through which the separation chamber VI 19 is communicated with the separation chamber IV 17, and the spacing between the baffle VI 13 and the side wall of the left separation chamber forms a passage VII 27 through which the separation chamber IV 17 is communicated with the separation chamber VII 20, and the exhaust pipe 5 is communicated with the separation chamber VII 20.

[0025] In this way, the oil-gas entering the left separation chamber through the communication hole 4 first enters the separation chamber I 14. After diffusing and condensing in the separation chamber I 14, it is divided into two paths. One path enters the separation chamber II 15 through the passage I 23. In this process, the oil-gas collides with the baffle II 9 and condenses and turns, then collides with the baffle III 10 and condenses and turns again, and enters the separation chamber III 16. After diffusing and condensing in the separation chamber II 15 and the separation chamber III 16, the oil-gas enters the separation chamber IV 17 through the passage III formed by the groove I 21 on the baffle III 10. After passing over the groove I 21, the oil-gas decelerates and diffuses and condenses in the separation chamber IV 17 and then enters the separation chamber VII 20 through the passage VII 27. After diffusing and condensing again in the separation chamber VII 20, it is discharged through the exhaust hole. The other path of oil-gas enters the separation chamber V 18 through the passage IV formed by the groove II 22 on the baffle IV 11. After passing over the groove II 22, the oil-gas decelerates and collides with the baffle V 12, diffuses and condenses, and then enters the separation chamber VI 19 through the passage V 25. After passing through the passage V 25, the oil-gas collides with the upper side wall of the left separation chamber and turns and enters the separation chamber VI 19, then collides with the baffle VI 13 and turns and enters the separation chamber IV 17 through the passage VI 26, and collides with the oil-gas entering the separation chamber IV 17 from the separation chamber III 16, further diffuses and condenses and then enters the separation chamber VII 20 through the passage VII 27. In this way, by optimizing the baffle direction and quantity, extending the exhaust path, increasing the collision of the oil-gas with the baffle and the separation chamber wall, the oil condensation is improved, the oil-gas separation effect is improved, the oil content in the exhaust is reduced, which is more environmentally friendly and saves oil.

[0026] The central boss 7, partition plate I 8, partition plate II 9, partition plate III 10, partition plate IV 11, partition plate V 12, and partition plate VI 13 are integrally formed with the left box body 1, which is convenient for production.

[0027] The end of the partition plate V 12 is bent towards the partition plate IV 11 to form a lip I 28, and the projection of the partition plate V 12 on the partition plate IV 11 completely covers the groove II 22. In this way, the lip I 28 can narrow the channel V 25, increase the residence time of the oil and gas in the separation chamber V 18, and at the same time increase the collision time of the oil and gas with the partition plate V 12, improving the condensation efficiency.

[0028] The end of the partition plate VI 13 is bent towards the central boss 7 to form a lip II 29, so that the channel VI 26 and the channel VII 27 form a flared channel with opposite flaring directions. In this way, the lip II 29 can narrow the channel VI 26, increase the air flow velocity in the channel VI 26, improve the collision effect with the oil and gas in the separation chamber IV 17, reduce the air flow velocity in the separation chamber IV 17, improve the diffusion and condensation efficiency, and at the same time improve the collision effect of the oil and gas with the partition plate VI 13 and the lower side wall of the left separation chamber when passing through the channel VII 27, further improving the condensation efficiency, thereby reducing the oil content in the oil and gas.

[0029] The depth of the part of the separation chamber I 14 opposite to the communication hole 4 on the gasket 3, the part of the separation chamber IV 17 close to the partition plate VI 13, and the separation chambers V 18, VI 19, and VII 20 is greater than the other part of the separation chamber I 14 and the separation chamber VI 19, as well as the separation chambers II 15 and III 16, so that steps 30 are respectively formed in the separation chambers I 14 and IV 17. In this way, when the oil and gas cross the steps 30, due to the sudden change in the volume of the separation chamber, the oil and gas flow velocity can be increased or decreased, improving the collision effect or the diffusion effect, thereby further reducing the oil content in the oil and gas.

[0030] In summary, the labyrinth structure of the present invention is more effective. The oil and gas are discharged outside the engine only after being blocked and condensed multiple times during the diffusion process. The oil content in the discharged oil and gas is small, so the oil consumption is small. The oil consumption rate is about 5 ml / h, which is reduced by 75% compared with the oil consumption rate of 20 ml / h of the existing labyrinth structure.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present invention without departing from the purpose and scope of the present technical solutions shall be covered by the scope of the claims of the present invention.

Claims

1. An engine oil-gas separation labyrinth structure, comprising a left case body and a right case body connected together, a sealing gasket is provided between the left case body and the right case body; a left separation chamber and a right separation chamber are respectively provided in the left case body and the right case body, and a connecting hole connecting the left separation chamber and the right separation chamber is provided on the sealing gasket between the left separation chamber and the right separation chamber; an exhaust pipe communicating with the left separation chamber is provided on the left case body, and an oil-gas inlet hole communicating with the right separation chamber is provided on the right case body; It is characterized in that A central boss and partitions I, II, III, IV, V and VI are provided in the middle of the left separation chamber of the left box body, dividing the left separation chamber into separation chamber I, separation chamber II, separation chamber III, separation chamber IV, separation chamber V, separation chamber VI and separation chamber VII; Among them, partition I, partition IV and the side wall of the left separation chamber enclose a separation chamber I which is opposite to the connecting hole on the sealing gasket, one end of the partition I is connected to the central boss, and the other end extends in the direction away from the exhaust pipe, and there is a gap between the partition I and the side wall of the left separation chamber; one end of the partition II is connected to the side wall of the left separation chamber relative to the exhaust pipe, and the other end extends in the direction away from the separation chamber I and passes through the gap between the partition I and the side wall of the left separation chamber, and there is a gap between the partition III and the side wall; one end of the partition III is connected to the central boss, and the other end passes through the gap between the partition II and the side wall of the left separation chamber and is bent in the direction close to the exhaust pipe and connected to the left The side walls of the separation chamber are connected, so that separation chamber II is formed between partition plate I, partition plate II and partition plate III, separation chamber III is formed between partition plate II, partition plate III and the side wall of the left separation chamber, and separation chamber IV is formed between the side of partition plate III away from partition plate II and the side wall of the left separation chamber; wherein, a channel I connecting separation chamber I and separation chamber II is formed between an end of partition plate I away from the central boss and partition plate II, and a channel II connecting separation chamber II and separation chamber III is formed between an end of partition plate II away from the side wall of the left separation chamber and partition plate III, and a groove I is provided at an end of partition plate III close to the side wall of the left separation chamber, and the groove I and the sealing gasket form a channel III connecting separation chamber III and separation chamber IV; Partition IV is located on the side of partition I away from partition II, one end of which is connected to the central boss, and the other end is connected to the side wall of the left separation chamber, and a groove II is opened on the end of partition IV close to the central boss. Partition V is located on the side of partition IV away from partition I, one end of which is connected to the central boss, and the other end is bent in the direction close to partition IV, and there is a gap between partition IV and partition VI. Partition VI is located on the side of partition V away from partition IV, one end of which is connected to the side wall of the left separation chamber, and one end extends in the direction away from the exhaust pipe, and there is a gap between the central boss and the side wall of the left separation chamber, so that the partition Ⅳ and partition V form separation chamber V, partition V and partition VI form separation chamber VI, and partition VI and the left separation chamber side wall form separation chamber VII; wherein, the groove II and the sealing gasket form a channel IV connecting separation chamber I with separation chamber V; the distance between partition V and partition IV forms a channel V connecting separation chamber V with separation chamber VI; the distance between partition VI and the center boss forms a channel VI connecting separation chamber VI with separation chamber IV, and the distance between partition VI and the left separation chamber side wall forms a channel VII connecting separation chamber IV with separation chamber VII, and the exhaust pipe is connected to separation chamber VII.

2. The engine oil-gas separation maze structure according to claim 1, characterized in that: The central boss, partition I, partition II, partition III, partition IV, partition V, and partition VI are integrally formed with the left box body.

3. The engine oil-gas separation labyrinth structure according to claim 1, characterized in that: One end of the partition plate V close to the partition plate IV is bent toward the partition plate IV to form a lip portion I, and the projection of the partition plate V on the partition plate IV completely covers the groove II.

4. The engine oil-gas separation maze structure according to claim 1, characterized in that: The end of the partition plate VI is bent toward the direction close to the central boss to form a lip portion II, so that the channel VI and the channel VII form a trumpet-mouth channel with opposite expansion directions.

5. The engine oil-gas separation labyrinth structure according to claim 1, characterized in that: The depth of the portion of separation chamber I facing the connecting hole on the sealing gasket, the portion of separation chamber IV close to partition plate VI, and separation chambers V, VI, and VII is greater than the other portion of separation chamber I and separation chamber VI, as well as separation chambers II and III, so that steps are formed in separation chamber I and separation chamber IV, respectively.

Images