Oil-gas separator

Abstract

The utility model provides an oil-gas separator which comprises a shell, the shell is provided with an oil-gas inlet and a gas outlet, the oil-gas separator further comprises a gas channel, the gas channel is located in the shell and provided with a first end and a second end which are sequentially arranged in the gas flowing direction, the first end of the gas channel is communicated with the oil-gas inlet, and the second end of the gas channel is communicated with the gas outlet. The second end of the gas channel is communicated with the gas outlet; and the multiple baffles are arranged on the inner wall of the gas channel at intervals in the gas flowing direction, and all the baffles protrude out of the inner wall of the gas channel. The oil-gas separator solves the problem that the oil-gas separation efficiency of an oil-gas separator in the prior art is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to an engine technical field, specifically, an oil gas separator. BACKGROUND

[0002] As an important part of the breathing system, the main function of the oil gas separator is to separate most of the oil droplets from the blow-by gas, and recycle the oil to the oil pan through the oil return pipeline, which can save oil and reduce pollutant emissions.

[0003] The oil gas separation efficiency of the oil gas separator is an important indicator for evaluating the separation capacity of the oil gas separator on the test bench. Currently, there are three separation methods widely used on the engine. The first is to use the inertia of oil droplets, limit the flow path of the mixer through the complex structure inside the oil gas separator, change the movement direction of the mixed gas or make the mixed gas rotate at high speed. The second is to use filter material to adhere oil droplets, and the mixed gas passes through the filter material, and the oil droplets cannot pass through and are captured, or a material with affinity to oil droplets is used for adsorption, and then the oil droplets are separated from the mixed gas. The third is electrostatic separation, which makes oil droplets charged by high-voltage discharge, and separates the oil droplets under the action of the electric field force when the oil droplets pass between the high-voltage plates.

[0004] However, the oil gas separation efficiency of the current oil gas separator is low, and the working pressure of the filter element is high, and the service life is low. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide an oil gas separator to solve the problem of low oil gas separation efficiency of the oil gas separator in the prior art.

[0006] In order to achieve the above purpose, the utility model provides an oil gas separator, which comprises a shell, the shell has an oil gas inlet and an air outlet, and the oil gas separator comprises: a gas channel located in the shell, the gas channel has a first end and a second end arranged in sequence along the gas flow direction, the first end of the gas channel is communicated with the oil gas inlet, and the second end of the gas channel is communicated with the air outlet; a plurality of baffles are arranged on the inner wall of the gas channel in the gas flow direction, and each baffle is protruded from the inner wall of the gas channel.

[0007] Further, the shell comprises a first shell part, and the oil gas inlet is arranged in the first shell part; the oil gas separator further comprises a spiral plate fixedly arranged in the first shell part, the spiral plate is spirally wound, and the spiral plate and the first shell part jointly form a spiral channel in the same plane; wherein the spiral channel is the gas channel.

[0008] Further, the baffle is sawtooth-shaped.

[0009] Further, the baffle has a first end face and a second end face arranged oppositely along the gas flow direction, the first end face is located on the side of the second end face close to the oil-gas inlet; one end of the first end face is connected with the inner wall of the gas passage, and the included angle between the section at the connection position and the first end face is greater than 90°; the other end of the first end face is connected with one end of the second end face, and the other end of the second end face is connected with the inner wall of the gas passage, and the connection position is connected through a round corner.

[0010] Further, the gas passage has a first inner wall and a second inner wall arranged oppositely along the radial direction of the first shell part, the first inner wall is located on the side of the second inner wall away from the center of the first shell part; wherein the plurality of baffles are located on the first inner wall.

[0011] Further, the first shell part includes a top plate and a bottom plate, one end of each baffle is connected with the top plate, and the other end of each baffle is connected with the bottom plate.

[0012] Further, the first shell part has a first oil return port, the first shell part includes a bottom plate, the bottom plate is conical, and the first oil return port is arranged at the center of the bottom plate.

[0013] Further, the shell includes a first shell part and a second shell part, the second shell part is connected with the first shell part and located at the top of the first shell part, the top plate of the first shell part is provided with a first communication port, the bottom of the second shell part is provided with a second communication port, and the first communication port and the second communication port are connected in communication; the oil-gas inlet is arranged in the first shell part, the second end of the gas passage is connected with the first communication port in communication, and the gas outlet is arranged in the second shell part; the oil-gas separator further includes a filter element arranged in the second shell part and located between the second communication port and the gas outlet.

[0014] Further, the filter element includes a tubular filter part and a filter end part, one end of the tubular filter part is arranged against the bottom of the second shell part and the tubular port is connected with the second communication port in communication, the tubular port of the other end of the tubular filter part is provided with the filter end part, and the filter end part is connected with the top of the second shell part; the gas outlet is arranged on the side wall of the second shell part.

[0015] Further, the bottom of the second shell part is provided with a third communication port, and the bottom plate of the first shell part is provided with a second oil return port; the first shell part is provided with an oil return passage, and the third communication port is connected with the second oil return port through the oil return passage.

[0016] The technical scheme of the utility model discloses, the casing of oil gas separator has oil gas import and gas outlet, gas passage is located in the casing, the first end of gas passage is linked together with oil gas import, the second end of gas passage is linked together with gas outlet, a plurality of baffle are protrudingly arranged in gas passage, oil gas mixture enters gas passage through oil gas import, and the oil droplet is generated by the collision with a plurality of baffle, and vortex is generated in the rear portion of baffle, and the oil gas separation efficiency is improved through the collision and cyclone, and the problem of low oil gas separation efficiency of oil gas separator in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 A first sectional view of an embodiment of the oil gas separator according to the utility model is shown;

[0019] Figure 2 A second sectional view of an embodiment of the oil gas separator according to the utility model is shown;

[0020] Figure 3 A front view of an embodiment of the oil gas separator according to the utility model is shown.

[0021] Among them, the above-mentioned drawings include the following reference signs:

[0022] 11, oil gas import; 12, gas passage; 121, first inner wall; 122, second inner wall; 13, baffle; 131, first end face; 132, second end face; 14, first casing part; 141, top plate; 142, bottom plate; 143, first oil return port; 144, first communication port; 145, second oil return port; 146, oil return channel; 15, spiral plate;

[0023] 20, second casing part; 21, gas outlet; 22, second communication port; 23, third communication port;

[0024] 30, filter element; 31, tubular filter part; 32, filter end part. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with embodiments.

[0026] It should be noted that the following detailed description is exemplary in nature and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0028] The utility model provides a kind of oil-gas separator, please refer to Figures 1 to 3 Including shell, shell has oil-gas inlet 11 and gas outlet 21, oil-gas separator includes: gas passage 12, located in shell, gas passage 12 has sequentially arranged first end and second end along its gas flow direction, the first end of gas passage 12 is communicated with oil-gas inlet 11, the second end of gas passage 12 is communicated with gas outlet 21;Multiple baffles 13 are spaced apart and arranged in the inner wall of gas passage 12 along the gas flow direction, each baffle 13 is arranged protruding from the inner wall of gas passage 12.

[0029] The shell of the oil-gas separator of the utility model has oil-gas inlet 11 and gas outlet 21, gas passage 12 is located in the shell, the first end of gas passage 12 is communicated with oil-gas inlet 11, the second end of gas passage 12 is communicated with gas outlet 21;Multiple baffles 13 are arranged protruding in gas passage 12, oil-gas mixture enters gas passage 12 through oil-gas inlet 11, collides with multiple baffles 13 to generate oil droplets, and vortex is generated at the rear of baffle 13, the oil-gas separation efficiency is improved by collision and cyclone generation, solve the problem of low oil-gas separation efficiency of oil-gas separator in prior art.

[0030] In the present embodiment, as shown in Figure 1 And Figure 2 The shell includes a first shell portion 14, and the oil-gas inlet 11 is arranged in the first shell portion 14. The oil-gas separator further includes a spiral plate 15, which is fixedly arranged in the first shell portion 14. The spiral plate 15 is spirally wound and cooperates with the first shell portion 14 to form a spiral channel in the same plane. The spiral channel is the gas passage 12.

[0031] In specific implementation, the spiral channel can fully utilize the space of the oil-gas separator, so that the oil-gas mixture collides with the baffles to generate oil droplets under the action of centrifugal force, thereby improving the oil-gas separation efficiency and further prolonging the service life of the filter element.

[0032] Specifically, the baffle 13 is zigzag-shaped.

[0033] Specifically, as shown in Figure 2 the baffle 13 has oppositely arranged first and second end faces 131 and 132 along the gas flow direction, the first end face 131 is located on the side of the second end face 132 close to the oil-gas inlet 11; one end of the first end face 131 is connected with the inner wall of the gas passage 12, and the included angle between the tangent plane at the connection and the first end face 131 is greater than 90°; the other end of the first end face 131 is connected with one end of the second end face 132, and the other end of the second end face 132 is connected with the inner wall of the gas passage 12, and the connection is connected with a round corner.

[0034] In specific implementation, the angle of the first end face 131 can avoid gas loss while ensuring better collision effect, and the round corner transition at the connection between the second end face 132 and the inner wall of the gas passage 12 ensures the cyclone effect, so that the above-mentioned settings can improve the separation efficiency.

[0035] Specifically, the gas passage 12 has oppositely arranged first and second inner walls 121 and 122 along the radial direction of the first shell part 14, the first inner wall 121 is located on the side of the second inner wall 122 away from the center of the first shell part 14; wherein a plurality of baffles 13 are located on the first inner wall 121. Such a setting allows the tangential gas entering the gas passage 12 of the oil-gas separator to collide with the baffles 13 sufficiently and generate cyclones behind the baffles 13.

[0036] Specifically, the first shell part 14 includes a top plate 141 and a bottom plate 142, one end of each baffle 13 is connected with the top plate 141, and the other end of each baffle 13 is connected with the bottom plate 142.

[0037] In specific implementation, the baffle 13 extends in the height direction of the first shell part 14, and its two ends extend to the top plate 141 and the bottom plate 142 respectively, which ensures that the gas collides with the baffles 13 sufficiently and generates cyclones behind the baffles 13, thereby fully improving the separation efficiency of the oil-gas separator.

[0038] Specifically, as shown in Figure 1 the first shell part 14 has a first oil return port 143, and the first shell part 14 includes a bottom plate 142, the bottom plate 142 is conical, and the first oil return port 143 is arranged at the center of the bottom plate 142. Such a setting facilitates the recycling of oil return.

[0039] In this embodiment, as shown in Figure 1As shown, the shell comprises a first shell part 14 and a second shell part 20, the second shell part 20 is connected with the first shell part 14 and located on the top of the first shell part 14, the first shell part 14 is provided with a first communication port 144 on the top plate 141, the second shell part 20 is provided with a second communication port 22 on the bottom, the first communication port 144 and the second communication port 22 are in communication; the oil-gas inlet 11 is arranged on the first shell part 14, the second end of the gas channel 12 is in communication with the first communication port 144, and the gas outlet 21 is arranged on the second shell part 20; the oil-gas separator further comprises a filter element 30 arranged in the second shell part 20 and located between the second communication port and the gas outlet 21.

[0040] In specific implementation, the gas passes through the first communication port 144 and the second communication port 22 into the second shell part 20 in sequence after passing through the gas channel 12, is filtered by the filter element 30, and finally flows out from the gas outlet 21. By setting the gas channel 12 to use inertial separation and then filtering by the filter element 30 to achieve secondary separation, the separation efficiency is improved, and the service life of the filter element is improved.

[0041] Specifically, the filter element 30 comprises a tubular filter part 31 and a filter end part 32, one end of the tubular filter part 31 is arranged on the bottom of the second shell part 20 and the tubular port is in communication with the second communication port 22, the tubular port of the other end of the tubular filter part 31 is provided with the filter end part 32, and the filter end part 32 is connected with the top of the second shell part 20; the gas outlet 21 is arranged on the side wall of the second shell part 20. Such arrangement can make the gas fully contact with the filter element 30 to improve the separation efficiency of the oil-gas separator.

[0042] Specifically, the bottom of the second shell part 20 is provided with a third communication port 23, and the bottom plate 142 of the first shell part 14 is provided with a second oil return port 145; the first shell part 14 is provided with an oil return channel 146, and the third communication port 23 is in communication with the second oil return port 145 through the oil return channel 146. Such arrangement can realize the recovery of oil in the second shell part 20.

[0043] The oil-gas mixture enters the first shell part 14 of the oil-gas separator in a tangential direction at a certain speed, and under the constraint of the top plate 141, the oil-gas mixture makes a circular motion in the cavity, the airflow rotates at a high speed, and makes a spiral motion downward, the centrifugal force on the larger oil droplets is much greater than the drag force that can be provided by the gas, so the oil droplets gradually deviate outward along the radial direction of the circle until they contact the baffle of the inner wall, are captured by the friction force, surface tension and van der Waals force, and a cyclone is generated behind the baffle 13, thereby improving the oil-gas separation efficiency.

[0044] The oil-gas separator of the utility model combines inertial separation and filter separation, and is provided with a spiral channel, so that the separation efficiency is improved by collision and cyclone generation, and the filter is used for separation in the secondary filtration stage, the pre-filter space is fully utilized, the separation efficiency is improved, the working pressure of the filter is reduced, the service life of the filter is improved, and the stability of the breathing system is improved.

[0045] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0046] The shell of the oil-gas separator has an oil-gas inlet 11 and an air outlet 21, the gas channel 12 is located in the shell, the first end of the gas channel 12 is in communication with the oil-gas inlet 11, and the second end of the gas channel 12 is in communication with the air outlet 21; a plurality of baffles 13 are protrusively arranged in the gas channel 12, the oil-gas mixture enters the gas channel 12 through the oil-gas inlet 11, collides with the plurality of baffles 13 to generate oil droplets, and a vortex is generated at the rear part of the baffle 13, so that the separation efficiency of the oil-gas separator is improved by collision and cyclone generation, and the problem of low oil-gas separation efficiency of the oil-gas separator in the prior art is solved.

[0047] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is further to be understood that the use of

[0048] For purposes of the description hereinafter, spatial or directional terms, such as, for example, "above", "below", "upper", "lower", and the like, can be used where reference is made to the orientation of one device or element with respect to another device or element. It is to be understood that such terms are intended to encompass different orientations of the device or element in addition to the orientation depicted in the figures. For example, if a device or element is depicted as above another device or element, it is to be understood that the device or element can also be oriented below the other device or element. Likewise, if a device or element is depicted above or below another device or element, it is to be understood that, additionally or alternatively, the device or element can be oriented above or below the other device or element. Furthermore, the exemplary term "above" can refer to a device or element positioned above another device or element in addition to a device or element positioned below another device or element. Thus, as used herein, the exemplary term "above" can include both positions depending on the particular usage.

[0049] The preferred embodiments of the present application have been described above with the purpose of enabling not only the best modes contemplated by the inventors of carrying out their application, but also as examples of embodiments in accordance with the present application. Numerous other embodiments have been omitted so as not to obscure the inventive aspects of the application. Therefore, the scope of the application is limited only by the following claims.

Claims

1. A gas-oil separator comprising a housing having a gas-oil inlet (11) and a gas outlet (21), characterized in that, The oil-gas separator further comprises: a gas passage (12) located in the shell, the gas passage (12) having a first end and a second end arranged in sequence along a gas flow direction of the gas passage (12), the first end of the gas passage (12) being in communication with the oil-gas inlet (11), and the second end of the gas passage (12) being in communication with the gas outlet (21); a plurality of baffles (13) arranged at intervals along the gas flow direction on an inner wall of the gas passage (12), each baffle (13) being arranged to protrude from the inner wall of the gas passage (12).

2. The oil and gas separator of claim 1, wherein, The shell comprises a first shell part (14), and the oil-gas inlet (11) is arranged in the first shell part (14); the oil-gas separator further comprises a spiral plate (15) fixedly arranged in the first shell part (14), the spiral plate (15) being spirally wound and forming a spiral passage in the same plane together with the first shell part (14); wherein the spiral passage is the gas passage (12).

3. The oil and gas separator of claim 1, wherein, The baffles (13) are sawtooth-shaped.

4. The oil and gas separator of claim 1, wherein, The baffles (13) have oppositely arranged first end faces (131) and second end faces (132) along the gas flow direction, the first end faces (131) being located on a side of the second end faces (132) close to the oil-gas inlet (11); one end of the first end face (131) is connected to the inner wall of the gas passage (12), and the included angle between the connecting surface at the connection and the first end face (131) is greater than 90°; the other end of the first end face (131) is connected to one end of the second end face (132), the other end of the second end face (132) is connected to the inner wall of the gas passage (12), and the connecting surfaces at the connections are connected with rounded corners.

5. The oil and gas separator of claim 2, wherein, The gas passage (12) has oppositely arranged first inner walls (121) and second inner walls (122) along the radial direction of the first shell part (14), the first inner walls (121) being located on a side of the second inner walls (122) away from the center of the first shell part (14); wherein a plurality of the baffles (13) are located on the first inner walls (121).

6. The oil and gas separator of claim 2, wherein, The first shell part (14) comprises a top plate (141) and a bottom plate (142), one end of each baffle (13) is connected to the top plate (141), and the other end of each baffle (13) is connected to the bottom plate (142).

7. The oil and gas separator of claim 2, wherein, The first shell part (14) has a first oil return port (143), the first shell part (14) comprises a bottom plate (142), the bottom plate (142) is conical, and the first oil return port (143) is arranged at the center of the bottom plate (142).

8. The oil and gas separator of claim 1, wherein, The shell comprises a first shell part (14) and a second shell part (20), the second shell part (20) is connected with the first shell part (14) and located on top of the first shell part (14), a first communication port (144) is arranged on the top plate (141) of the first shell part (14), the bottom of the second shell part (20) is provided with a second communication port (22), the first communication port (144) and the second communication port (22) are communicated; the oil and gas inlet (11) is arranged on the first shell part (14), the second end of the gas channel (12) is communicated with the first communication port (144), and the gas outlet (21) is arranged on the second shell part (20). The oil and gas separator further comprises a filter element (30) arranged in the second shell part (20) and located between the second communication port and the gas outlet (21).

9. The oil and gas separator of claim 8, wherein, The filter element (30) comprises a tubular filter part (31) and a filter end part (32), one end of the tubular filter part (31) is abutted against the bottom of the second shell part (20) and the tubular port is communicated with the second communication port (22), the tubular port of the other end of the tubular filter part (31) is provided with the filter end part (32), and the filter end part (32) is connected with the top of the second shell part (20); the gas outlet (21) is arranged on the side wall of the second shell part (20).

10. The oil and gas separator of claim 8, wherein, The bottom of the second shell part (20) is provided with a third communication port (23), and the bottom plate (142) of the first shell part (14) is provided with a second oil return port (145); the first shell part (14) is provided with an oil return channel (146), and the third communication port (23) is communicated with the second oil return port (145) through the oil return channel (146).

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