Oil-gas separator

Abstract

The utility model provides an oil-gas separator which comprises a shell, the shell comprises a first shell body and a second shell body, the first shell body is provided with an inlet and a gas outlet, a first bearing is arranged in the first shell body, the side, close to the inlet of the first shell body, of the first bearing is in sealed connection with the inner wall of the first shell body, and a second bearing is arranged in the second shell body; the second shell is connected with the first shell, and an outlet for liquid to flow out is formed in the second shell; the oil-gas separation device is arranged in the shell body; and the exhaust pipe is connected with the air outlet of the first shell. According to the oil-gas separator, solid particles in a gas-liquid mixture can be prevented from entering the first bearing, the internal structure of the oil-gas separator is simplified, and the service life of the first bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of fluid purification, in particular to an oil-gas separator. Background Art

[0002] An oil-gas separator is a device that separates gas and liquid mixtures. Existing oil-gas separators include a housing, a shaft mounted within the housing, and a bearing connected to the shaft. The upper bearing is secured within the upper housing using screws. When the upper bearing is connected to the engine, solid particles (such as soot and metal particles) in the crankcase exhaust gas can enter the upper bearing through the upper housing inlet, accelerating wear and shortening its service life. Utility Model Content

[0003] In order to overcome the defects in the prior art, an embodiment of the present utility model provides an oil-gas separator, which can prevent solid particles in the gas-liquid mixture from entering the first bearing, simplify the internal structure of the oil-gas separator, and increase the service life of the first bearing.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model discloses an oil-gas separator, comprising:

[0006] a housing, the housing comprising a first housing and a second housing, the first housing being provided with an inlet and an air outlet, a first bearing being provided within the first housing, a side of the first bearing close to the inlet of the first housing being sealedly connected to an inner wall of the first housing, the second housing being connected to the first housing, and the second housing being provided with an outlet for liquid outflow;

[0007] an oil-gas separation device, the oil-gas separation device being arranged in the housing;

[0008] An exhaust pipe is connected to the air outlet of the first shell.

[0009] The above technical solution seals the side of the first bearing close to the inlet of the first shell with the inner wall of the first shell, so that the first bearing forms a semi-open structure with one side sealed and the other side open. This can prevent solid particles from entering the first bearing from the inlet of the first shell and causing pollution and wear to the interior of the first bearing, thereby improving the service life of the first bearing. The first bearing is sealed with the first shell, and there is no need to set a bearing seat, which simplifies the structure and installation steps inside the first shell, thereby reducing the production cost of the oil-gas separator.

[0010] Furthermore, the inlet of the first housing is provided with a connection portion, and a side of the first bearing proximate to the inlet of the first housing is sealedly connected to the connection portion. The first bearing is disposed at the inlet of the first housing by being sealedly connected to the connection portion, and when the gas-liquid mixture enters through the inlet, the gas-liquid mixture can cool and lubricate the first bearing.

[0011] Furthermore, the oil-gas separation device includes a rotating shaft and a rotor sleeved on the rotating shaft. The rotor has an air inlet, and an air inlet passage is formed between the rotor air inlet and the inlet of the first housing. The first bearing is located within the air inlet passage. The first bearing is cooled by the gas entering through the inlet of the first housing. Liquid oil in the gas entering through the inlet of the first housing can also lubricate the first bearing. The first bearing is located within the air inlet passage, which allows for better contact between the first bearing and the gas entering through the inlet of the first housing, thereby accelerating heat dissipation from the first bearing and improving lubrication of the first bearing, thereby increasing the service life of the first bearing.

[0012] Furthermore, the first bearing is positioned near the middle of the air inlet passage. The inlet of the first housing allows gas to enter, and positioning the first bearing in the middle of the air inlet passage allows the incoming gas to circumvent the first bearing before entering the rotor's air inlet, further accelerating heat dissipation from the first bearing and improving lubrication of the first bearing.

[0013] Furthermore, the axial distance between the first bearing and the rotor's air inlet is 4 to 20 mm. A spring is provided between the first bearing and the rotor to ensure rotation of the first bearing's inner ring. When the axial distance between the first bearing and the rotor's air inlet is less than 4 mm, the space reserved for the spring is short, resulting in a short spring and manufacturing difficulties. Furthermore, since gas will be drawn into the rotor's air inlet, when the axial distance between the first bearing and the rotor's air inlet is greater than 20 mm, no gas will flow through the first bearing, resulting in poor lubrication of the first bearing.

[0014] Furthermore, the axial distance between the first bearing and the rotor's air inlet is 6 to 12 mm. If the axial distance is too small, it will affect the internal structure of the oil-gas separator, while if it is too large, it will affect the heat dissipation and lubrication of the first bearing. To ensure optimal heat dissipation and lubrication of the first bearing, the axial distance between the first bearing and the rotor's air inlet is set between 6 and 12 mm.

[0015] Furthermore, a second bearing is provided in the second housing, and the rotating shaft of the oil-gas separation device extends in a first direction and passes through the first bearing and the second bearing. The rotating shaft of the oil-gas separation device passes through the first bearing and the second bearing, thereby ensuring the stability of the rotating shaft during rotation.

[0016] Furthermore, the exhaust pipe has a gas collection port and an exhaust port. The gas collection port is disposed within the first housing and below the oil-gas separation device, with its opening facing the oil-gas separation device. The opening of the gas collection port corresponds to the flow direction of the gas separated by the oil-gas separation device, thereby increasing the amount of gas collected.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] The present application seals and connects the side of the first bearing close to the inlet of the first housing to the inner wall of the first housing, so that the first bearing forms a semi-open structure with one side sealed and the other side open. This can prevent solid particles from entering the first bearing from the inlet of the first housing and causing contamination and wear to the interior of the first bearing, thereby improving the service life of the first bearing. Since the first bearing is sealed and connected to the first housing, there is no need to set a bearing seat, which simplifies the structure and installation steps inside the first housing, thereby reducing the production cost of the oil-gas separator.

[0019] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural diagram of an oil-gas separator provided by an embodiment of the utility model;

[0022] Figure 2 This is a cross-sectional view of an oil-gas separator provided by an embodiment of the utility model;

[0023] Figure 3 This is a structural diagram of a first shell provided by an embodiment of the utility model;

[0024] Figure 4 This is an internal structure diagram of an oil-gas separator provided by an embodiment of the utility model.

[0025] The figure marks in the above drawings are: 1. first shell; 2. second shell; 3. oil-gas separation device; 4. exhaust pipe; 5. first bearing; 6. inlet; 7. air outlet; 8. outlet; 9. connecting part; 10. rotating shaft; 11. rotor; 12. air inlet; 13. second bearing; 14. air collecting port; 15. exhaust port. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In addition, the drawings of the present invention are only for simple schematic illustration and are not depicted according to actual size. Please note in advance.

[0027] In the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "forward", "back", "between", "close to", "far away" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. It should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 direct connection or an indirect connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] It should be understood that although terms such as "first," "second," and "third" may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. In addition, the term "or" as used herein may include any one or more combinations of the associated listed items, as appropriate.

[0029] Reference Figures 1 to 4 As shown, an embodiment of the present application provides an oil-gas separator, comprising:

[0030] The housing includes a first housing 1 and a second housing 2, wherein the first housing 1 and the second housing 2 are sealed and connected. Figure 1 and Figure 2 As shown, the first shell 1 is provided with an inlet 6 for the gas-liquid mixture to enter and an outlet 7 for the separated gas to flow out. One side of the inlet 6 is connected to a pipeline to receive the gas-liquid mixture. The second shell 2 is provided with an outlet 8 for the liquid to flow out.

[0031] like Figure 2 As shown, a first bearing 5 is provided in the first shell 1. The side of the first bearing 5 close to the inlet of the first shell 1 is sealed with the inner wall of the first shell 1, so that the first bearing 5 forms a semi-open structure with one side sealed and the other side open. This can prevent solid particles in the gas-liquid mixture from entering the first bearing 5 through the inlet 6 of the first shell 1, causing pollution and wear to the interior of the first bearing 5, thereby improving the service life of the first bearing 5.

[0032] like Figure 3 As shown, in an embodiment of the present application, the inlet 6 of the first shell 1 is provided with a connecting portion 9, and the side of the first bearing 5 close to the inlet 6 of the first shell 1 is sealed and connected to the connecting portion 9, so that the first bearing 5 forms a semi-open structure with one side sealed and the other side open.

[0033] The oil-gas separation device 3 is arranged in the housing 1, as shown in FIG. Figure 2 As shown, the oil-gas separation device 3 includes a rotating shaft 10 and a rotor 11 sleeved on the rotating shaft 10. The rotating shaft 10 extends along a first direction and passes through a first bearing 5 and a second bearing 13 disposed within the interior of the second housing 2. The rotor 11 has an air inlet 12. An air inlet passage is formed between the air inlet 12 of the rotor 11 and the inlet 6 of the first housing 1. The first bearing 5 is located within the air inlet passage, thereby ensuring rapid heat dissipation and lubrication of the first bearing 5. The first direction is from the first housing 1 to the second housing 2.

[0034] In order to further improve the heat dissipation and lubrication effect of the first bearing 5, preferably, the first bearing 5 is arranged in the middle position of the air intake channel, so that when the gas-liquid mixture enters from the inlet 6, it can surround the circumference of the first bearing 5 and fully lubricate the first bearing 5.

[0035] Specifically, such as Figure 2 As shown, there is an axial distance between the first bearing 5 and the air inlet 12 of the rotor 11, so that there is a gas flow space between the first bearing 5 and the air inlet 12, so that when the gas-liquid mixture enters through the inlet 6, it can lubricate the first bearing 5 located in the air inlet channel, and then enter the oil-gas separation device 3 for gas-liquid separation, preventing the situation where the distance between the first bearing 5 and the air inlet 12 is too short, resulting in the inability to lubricate the first bearing 5.

[0036] If the axial distance between the first bearing 5 and the air inlet 12 of the rotor 11 is too large, it will affect the lubrication effect of the first bearing 5. If it is too small, it will affect the internal structure of the oil-gas separator. In one possible embodiment, the axial distance between the first bearing 5 and the air inlet 12 of the rotor 11 is 4 to 20 mm. Preferably, the axial distance between the first bearing 5 and the air inlet 12 of the rotor 11 is 6 to 12 mm, which can ensure the best heat dissipation and lubrication effect of the first bearing 5.

[0037] The exhaust pipe 4 is sealed with the air outlet 7 on the first shell 1. Figure 4 As shown, the exhaust pipe 4 has a gas collecting port 14 at one end located inside the first shell 1 for collecting the separated gas, and has an exhaust port 15 at the other end located outside the first shell 1 for discharging the collected gas. The gas collecting port 14 is located below the oil-gas separation device 3 in the first shell 1, and the opening of the gas collecting port 14 faces the oil-gas separation device 3, so that the opening of the gas collecting port 14 corresponds to the direction of flow of the gas separated by the oil-gas separation device 3, thereby increasing the amount of collected gas.

[0038] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An oil-gas separator, characterized in that: include: a housing, the housing comprising a first housing and a second housing, the first housing being provided with an inlet and an air outlet, a first bearing being provided within the first housing, a side of the first bearing close to the inlet of the first housing being sealedly connected to an inner wall of the first housing, the second housing being connected to the first housing, and the second housing being provided with an outlet for liquid outflow; an oil-gas separation device, the oil-gas separation device being arranged in the housing; An exhaust pipe is connected to the air outlet of the first shell.

2. The oil-gas separator according to claim 1, characterized in that: The inlet of the first shell is provided with a connecting portion, and a side of the first bearing close to the inlet of the first shell is sealed and connected to the connecting portion.

3. The oil-gas separator according to claim 1, characterized in that: The oil-gas separation device includes a rotating shaft and a rotor sleeved on the rotating shaft. The rotor has an air inlet. An air inlet channel is formed between the air inlet of the rotor and the inlet of the first shell. The first bearing is located in the air inlet channel.

4. The oil-gas separator according to claim 3, characterized in that: The first bearing is arranged near a middle position of the air intake passage.

5. The oil-gas separator according to claim 3, characterized in that: An axial distance between the first bearing and the air inlet of the rotor is 4 to 20 mm.

6. The oil-gas separator according to claim 5, characterized in that: An axial distance between the first bearing and the air inlet of the rotor is 6 to 12 mm.

7. The oil-gas separator according to claim 1, characterized in that: A second bearing is provided in the second housing, and the rotating shaft of the oil-gas separation device extends along a first direction and passes through the first bearing and the second bearing.

8. The oil-gas separator according to claim 1, characterized in that: The exhaust pipe has an air collecting port and an exhaust port. The air collecting port is provided in the first shell and is located below the oil-gas separation device. The opening of the air collecting port faces the oil-gas separation device.

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