Oil-gas separator

Abstract

The utility model discloses an oil-gas separator which comprises a shell, an upper bearing seat and a lower bearing seat which are opposite to each other are arranged in the shell, an upper bearing is arranged in the upper bearing seat, and a lower bearing is arranged in the lower bearing seat; the two ends of a center shaft of the oil-gas separation device are arranged in the upper bearing and the lower bearing in a penetrating mode respectively. The exhaust pipe is connected with the first outlet in a sealed mode, and a gas collecting opening is formed in the part, located in the shell, of the exhaust pipe; the oil baffle plate is arranged on a central shaft of the oil-gas separation device in a sleeving manner, the oil baffle plate is located between the gas collection port and the lower bearing, and the outer diameter of the oil baffle plate is larger than or equal to the outer diameter of the lower bearing. According to the oil-gas separator, the oil baffle plate is arranged between the lower bearing and the gas collecting port of the exhaust pipe, so that liquid oil is prevented from being thrown into the gas collecting port by the bearing rotating at a high speed, and the gas-liquid separation effect of the oil-gas separator is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fluid purification, specifically is an oil-gas separator. BACKGROUND

[0002] The gas-liquid separator is a kind of separation device using the principle that gas and liquid are separated from each other under the action of centrifugal force.The gas-liquid separator can be used for separating gas-liquid mixture discharged by automobile engine.The traditional gas-liquid separator directly sets up and down two bearings in shell, the central shaft of oil-gas separation device is arranged between the two bearings, and the gas-liquid separation is realized by rotating the oil-gas separation device, and the liquid separated flows to the lower bearing along the inner side wall of shell under the action of centrifugal force and flows to the second outlet through the lower bearing.However, under the drive of high-speed rotation of lower bearing, the liquid contacting the lower bearing is thrown to the gas collecting port of exhaust pipe, resulting in poor final separation effect. SUMMARY

[0003] In order to overcome the defects in the prior art, the utility model provides an oil-gas separator, which sets an oil baffle between the lower bearing and the gas collecting port of the exhaust pipe to prevent liquid oil from being thrown into the gas collecting port by the high-speed rotating bearing and ensure the gas-liquid separation effect of the oil-gas separator.

[0004] To achieve the above purpose, the utility model adopts the technical scheme of an oil-gas separator, which comprises:

[0005] A shell is provided with a first outlet, and opposite upper bearing seat and lower bearing seat are arranged in the shell, the upper bearing seat is provided with an upper bearing, and the lower bearing seat is provided with a lower bearing;

[0006] An oil-gas separation device is provided with a central shaft, and the two ends of the central shaft are respectively arranged in the upper bearing and the lower bearing;

[0007] An exhaust pipe is sealingly connected with the first outlet, and the part of the exhaust pipe located in the shell is provided with a gas collecting port;

[0008] An oil baffle is sleeved on the central shaft of the oil-gas separation device, and the oil baffle is located between the gas collecting port and the lower bearing, and the outer diameter of the oil baffle is greater than or equal to the outer diameter of the lower bearing.

[0009] By the above technical scheme, the oil baffle is arranged between the lower bearing and the gas collecting port of the exhaust pipe to prevent liquid oil from being thrown into the gas collecting port by the high-speed rotating bearing, so as to ensure the gas-liquid separation effect.

[0010] Further, a distance of 1mm-10mm is provided between the oil baffle and the lower bearing. At least 1mm is provided between the oil baffle and the lower bearing to ensure the flow of liquid oil; and at most 10mm is provided between the oil baffle and the lower bearing to ensure the oil blocking effect of the oil baffle.

[0011] Further, a distance of 2mm-5mm is provided between the oil baffle and the lower bearing. The distance between the oil baffle and the lower bearing is preferably greater than or equal to 2mm to ensure good flow of liquid oil. Meanwhile, the distance between the oil baffle and the lower bearing is preferably less than or equal to 5mm. The greater the distance, the greater the baffle required, and the greater the impact of the baffle on the rotation of the oil-gas separation device.

[0012] Further, the outer diameter of the oil baffle is greater than the outer diameter of the lower bearing by 2mm-40mm. The outer diameter of the oil baffle is at least greater than the outer diameter of the lower bearing by 2mm to provide sufficient space for blocking the liquid oil from entering the gas inlet. Meanwhile, the outer diameter of the oil baffle is at most greater than the outer diameter of the lower bearing by 40mm. Because the oil baffle generates an outward airflow when rotating at high speed to block the flow of liquid oil to the lower bearing, the greater the outer diameter of the oil baffle, the greater the range of the airflow generated, and in order to ensure that the liquid oil can flow smoothly to the lower bearing, the size of the outer diameter of the oil baffle needs to be limited.

[0013] Further, the outer diameter of the oil baffle is greater than the outer diameter of the lower bearing by 6mm-20mm. In actual use, the outer diameter of the oil baffle is preferably greater than the outer diameter of the lower bearing by 6mm-20mm, and the outer diameter of the oil baffle also needs to be adjusted according to the distance between the oil baffle and the lower bearing.

[0014] Further, the oil baffle includes a connecting portion sleeved on the central shaft of the oil-gas separation device, the connecting portion extends along the radial direction of the central shaft of the oil-gas separation device to form an extension portion, and the extension portion is located between the gas inlet and the lower bearing. The extension portion realizes the function of blocking the liquid oil from entering the gas inlet.

[0015] Further, the extension portion is bent away from the connecting portion and towards the lower bearing, and the bending angle is between 10°-30°. The extension portion is bent towards the lower bearing so that it can touch the liquid oil thrown in advance to play a blocking role. Through this setting, the outer diameter of the oil baffle can be reduced.

[0016] Further, the shell includes:

[0017] an upper shell, which is provided with an inlet and a first outlet, and an upper bearing seat is arranged in the upper shell;

[0018] A lower shell is sealingly connected with the upper shell, and is provided with a second outlet for liquid outflow, and the lower shell is provided with the lower bearing seat.

[0019] By means of the above technical scheme, the application has the following beneficial effects:

[0020] In the application, the oil baffle is arranged between the lower bearing and the gas collecting port of the exhaust pipe to block the liquid oil thrown by the high-speed rotating lower bearing, so that the liquid oil is prevented from entering the gas collecting port, thereby ensuring the gas-liquid separation effect of the oil-gas separator.

[0021] In the application, the extension part of the oil baffle is bent towards the lower bearing to reduce the outer diameter of the oil baffle, and the bent extension part can still block the liquid oil thrown by the high-speed rotating lower bearing.

[0022] In order to make the above and other objects, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0024] Fig. 1 is a structural schematic view of an oil-gas separator in the embodiments of the application;

[0025] Fig. 2 is a structural schematic view of an oil-gas separator in the embodiments of the application;

[0026] Fig. 3 is a structural schematic view of an oil baffle in the embodiments of the application.

[0027] The reference numerals in the above drawings are as follows: 1, upper shell; 11, first pipeline; 2, exhaust pipe; 21, gas collecting port; 22, second pipeline; 3, lower shell; 31, second outlet; 32, lower bearing; 4, oil-gas separation device; 41, central shaft; 5, oil baffle; 51, connecting part; 52, extension part. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0029] It should be noted that, in the description of the present application, the terms "first", "second", etc. are only used for description purposes and to distinguish similar objects, and there is no sequence between the two, nor can it be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0030] Embodiment: combined with Figs. 1-3 As shown in the drawings, the present embodiment discloses an oil-gas separator for separating gas-liquid mixture discharged by an automobile engine, comprising:

[0031] The upper shell 1 is provided with an inlet and a first outlet. The inlet is circumscribed by a first pipeline 11, and one end of the first pipeline 11 away from the inlet is used to receive the gas-liquid mixture discharged by the automobile engine. The first outlet is inserted with an exhaust pipe 2, and the exhaust pipe 2 is sealingly connected with the first outlet. The part of the exhaust pipe 2 located in the upper shell 1 is provided with a gas collecting port 21 for collecting the gas separated by the oil-gas separator. The part of the exhaust pipe 2 located outside the upper shell 1 is connected with a second pipeline 22 for discharging the gas collected by the gas collecting port 21.

[0032] The lower side of the upper shell 1 is sealingly connected with a lower shell 3, and the lower shell 3 is provided with a second outlet 31 for liquid outflow. The liquid separated by the oil-gas separator is discharged from the second outlet 31.

[0033] Among them, the upper shell 1 is provided with an upper bearing seat, and the lower shell 3 is provided with a lower bearing seat, and the upper bearing seat and the lower bearing seat are coaxially arranged. The upper bearing seat is provided with an upper bearing, and the lower bearing seat is provided with a lower bearing 32.

[0034] The oil-gas separation device 4 is arranged between the upper shell 1 and the lower shell 3, and the center shaft 41 of the oil-gas separation device 4 penetrates the upper bearing and the lower bearing 32 respectively.

[0035] The gas collecting port 21 of the exhaust pipe 2 is located below the oil-gas separation device 4, and is used to collect the gas separated by the oil-gas separation device 4.

[0036] The oil-gas separation device 4 is further sleeved with an oil baffle 5 on the central shaft 41. The oil baffle 5 is located between the gas collecting port 21 and the lower bearing 32, and the outer diameter of the oil baffle 5 is greater than or equal to the outer diameter of the lower bearing 32. The oil baffle 5 includes a connecting portion 51 sleeved on the central shaft 41 of the oil-gas separation device 4, and the connecting portion 51 extends along the radial direction of the central shaft 41 of the oil-gas separation device 4 to form an extension portion 52 located between the gas collecting port 21 and the lower bearing 32. The liquid oil separated by the oil-gas separation device 4 is thrown to the inner side wall of the upper housing 1 under the action of centrifugal force, and then flows downward along the inner side wall of the upper housing 1 to the lower bearing seat, and then flows to the lower bearing 32 through the lower bearing seat, and then flows to the second outlet 31 through the lower bearing 32. However, the lower bearing 32 rotates at a high speed during the operation of the oil-gas separation device 4, and the high-speed rotating lower bearing 32 can throw the liquid oil. The extension portion 52 of the oil baffle 5 can block the liquid oil thrown by the high-speed rotating lower bearing 32, so as to prevent the liquid oil from entering the gas collecting port 21 of the exhaust pipe 2.

[0037] The extension portion 52 and the lower bearing 32 are spaced apart by 4mm, and the outer diameter of the extension portion 52 is greater than the outer diameter of the lower bearing 32 by 10mm.

[0038] Optionally, the extension portion 52 and the lower bearing 32 are spaced apart by 1mm to 10mm. The oil baffle 5 and the lower bearing 32 are spaced apart by at least 1mm, so as to ensure the flow of the liquid oil. The oil baffle and the lower bearing are spaced apart by at most 10mm, so as to ensure the oil blocking effect of the oil baffle.

[0039] Preferably, the oil baffle 5 and the lower bearing 32 are spaced apart by 2mm to 5mm. The distance between the oil baffle 5 and the lower bearing 32 is greater than or equal to 2mm, so as to ensure the flow of the liquid oil. Meanwhile, the greater the distance between the oil baffle 5 and the lower bearing 32, the greater the oil baffle 5, and the greater the influence of the oil baffle 5 on the rotation of the oil-gas separation device 4. Therefore, the distance between the oil baffle 5 and the lower bearing 32 is less than or equal to 5mm.

[0040] Optionally, the outer diameter of the oil baffle 5 can be 2mm-40mm larger than the outer diameter of the lower bearing 32. The outer diameter of the oil baffle 5 is at least 2mm larger than the outer diameter of the lower bearing 32, which can provide sufficient space for blocking the liquid oil from entering the gas collecting port. At the same time, since the oil baffle 5 will generate an outward airflow when rotating at high speed, which can block the liquid oil from flowing to the lower bearing 32, therefore, the larger the outer diameter of the oil baffle 5, the greater the range of the generated airflow, in order to ensure that the liquid oil can flow smoothly to the lower bearing, the outer diameter of the oil baffle 5 is limited to be at most 40mm larger than the outer diameter of the lower bearing 32. In actual use, it is best to select the outer diameter of the oil baffle 5 to be 6mm-20mm larger than the outer diameter of the lower bearing 32. In addition, the outer diameter of the oil baffle 5 also needs to be adaptively adjusted according to the distance from the lower bearing 32.

[0041] Optionally, the side of the extension part 52 away from the connecting part 51 can be bent towards the lower bearing 32, and the bending angle is between 10°-30°. By bending, the outer diameter of the oil baffle 5 can be reduced.

[0042] The principle and implementation mode of the present application are described in the specific embodiments, and the above embodiment is only used to help understand the method and core idea of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. An oil and gas separator characterized by, The application relates to a shell, an oil-gas separation device, an exhaust pipe and an oil baffle. The shell is provided with a first outlet, and opposite upper and lower bearing seats are arranged in the shell, an upper bearing is arranged in the upper bearing seat, and a lower bearing is arranged in the lower bearing seat. The central shaft of the oil-gas separation device is arranged in the upper and lower bearings. The exhaust pipe is in sealed connection with the first outlet, and the part of the exhaust pipe in the shell is provided with a gas collecting port. The oil baffle is arranged on the central shaft of the oil-gas separation device, and is located between the gas collecting port and the lower bearing.

2. The oil and gas separator of claim 1, wherein, The outer diameter of the oil baffle is greater than or equal to the outer diameter of the lower bearing.

3. The oil and gas separator of claim 2, wherein, The distance between the oil baffle and the lower bearing is 1-10 mm.

4. The oil and gas separator of claim 3, wherein, The distance between the oil baffle and the lower bearing is 2-5 mm.

5. The oil and gas separator of claim 4, wherein, The outer diameter of the oil baffle is greater than the outer diameter of the lower bearing by 2-40 mm.

6. The oil and gas separator of claim 1, wherein, The outer diameter of the oil baffle is greater than the outer diameter of the lower bearing by 6-20 mm.

7. The oil and gas separator of claim 6, wherein, The oil baffle comprises a connecting part arranged on the central shaft of the oil-gas separation device, and the circumferential side of the connecting part extends along the radial direction of the central shaft of the oil-gas separation device to form an extension part, and the extension part is located between the gas collecting port and the lower bearing.

8. The oil and gas separator of claim 1, wherein, The side of the extension part away from the connecting part is bent towards the lower bearing, and the bending angle is 10-30 degrees. The shell comprises: An upper shell provided with an inlet and a first outlet, and the upper shell is provided with the upper bearing seat. A lower shell in sealed connection with the upper shell, the lower shell is provided with a second outlet for liquid outflow, and the lower shell is provided with the lower bearing seat.

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