Flow guide device of oil-gas separator

Abstract

The utility model relates to an oil-gas separator flow guiding device which comprises a shell, a flow guiding part used for changing the flowing direction of blow-by gas is arranged on the shell, a convex rib extending in the flowing direction of the blow-by gas is arranged on the side face, making contact with the blow-by gas, of the flow guiding part, and a transverse rib is further arranged at the tail end of the convex rib in the flowing direction. The flow guide part changes the blow-by flowing direction, so that oil drops impact on the surface of the flow guide part through inertia and are intercepted and separated through the transverse ribs. The flow guide part is arranged to change the flowing direction of blow-by gas, the convex ribs are arranged on the inner side of the flow guide part to guide flow, after the blow-by gas turns, large oil drops collide with the inner side of the flow guide part due to inertia and are intercepted and gathered by the transverse ribs, the blow-by gas subjected to flow guide enters the oil-gas separator in order, turbulent flow is effectively reduced, and the oil-gas separation efficiency is improved. And large oil drops are separated in advance and are prevented from entering the oil-gas separator to cause saturation of the adsorption part.

Description

Technical Field

[0001] The utility model belongs to the field of oil and gas separation, and particularly relates to a flow guiding device for an oil and gas separator. Background Art

[0002] The oil-gas separator is an important component of the engine. Its separation performance has a significant impact on the entire engine. Part of the exhaust gas generated by engine combustion will leak into the crankcase through the gap between the piston ring and the cylinder wall. It is necessary to extract the exhaust gas in the crankcase to avoid excessive air pressure in the crankcase, which may cause oil and air leakage in the crankcase. Therefore, the exhaust gas needs to be separated through the oil-gas separator, exported to the intake system, and then enter the combustion chamber for combustion again.

[0003] Among the existing oil-gas separators, one type achieves the purpose of adsorption and separation by changing the flow direction of the blowby gas and relying on inertia to make the oil droplets hit the flexible porous adsorption component. However, the blowby gas lacks an effective flow-guiding structure. Since the crankcase blowby gas pressure is unstable and the blowby gas volume is sometimes high and sometimes low, the incoming airflow is prone to turbulence, which affects the separation effect. In addition, large oil droplets in the blowby gas cannot be separated in advance. If larger oil droplets hit the adsorption component, it is easy to cause the adsorption component to be saturated, affecting the adsorption effect of subsequent oil droplets. Utility Model Content

[0004] The purpose of the utility model is to provide an oil-gas separator guide groove structure that can separate larger oil droplets in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A flow guide device for an oil-gas separator includes a shell, the shell being provided with a flow guide portion for changing the flow direction of blowby gas, the side of the flow guide portion in contact with the blowby gas being provided with convex ribs extending in the flow direction of the blowby gas, and the ends of the convex ribs in the flow direction being further provided with transverse ribs. The flow guide portion changes the flow direction of the blowby gas so that oil droplets inertialy impact the surface of the flow guide portion and are intercepted and separated by the transverse ribs.

[0007] As a further optimization scheme of the present invention, the shell is provided with an air intake slot, and the guide part is provided around the air intake slot to allow the blowby gas to enter the inlet of the guide part. The guide part is integrated with the shell, and the air intake slot is provided to facilitate the introduction of the blowby gas into the guide part.

[0008] As a further optimization scheme of the present invention, a plurality of guide ribs are provided on the shell, and the guide ribs are arranged at the outlet of the guide part, so as to allow the blowby gas to enter the oil-gas separator in an orderly manner. The guide ribs play a further guiding role. After the blowby gas passes through the convex ribs in the guide part, it is further guided by the guide ribs, which can effectively stabilize the airflow.

[0009] As a further optimization scheme of the present invention, the flow channel direction inside the guide portion is L-shaped, and the convex ribs are distributed in an L-shape on the inner side of the guide portion. This scheme provides an L-shaped flow channel, that is, a right-angle flow channel, so that the blowby gas makes a right-angle turn when entering the guide portion. Larger oil droplets hit the inner surface of the guide portion due to inertia, and are intercepted and gathered by the transverse ribs to form larger oil droplets. After convergence, they are not easily blown into the oil-gas separator by the blowby gas, but fall obliquely on the upper surface of the shell and are subsequently recovered by the oil return structure.

[0010] As a further optimization solution of the present invention, the housing is provided with a mounting hole for connecting with the oil-gas separator, and the surface of the housing is also provided with a sealing groove for docking.

[0011] The beneficial effects of the present invention are:

[0012] The utility model changes the flow direction of the blowby gas by providing a guide portion, and provides convex ribs on the inner side of the guide portion for guiding the flow. After the blowby gas turns, larger oil droplets hit the inner side of the guide portion due to inertia and are intercepted and gathered by the transverse ribs. The blowby gas that has passed the guidance enters the oil-gas separator in an orderly manner, effectively reducing turbulence, and larger oil droplets are separated in advance to prevent them from entering the oil-gas separator and causing saturation of the adsorption component. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0015] Figure 3 It is a top view of the present utility model.

[0016] Figure 4 It is a bottom view of the present utility model.

[0017] In the figure: 1. Shell; 11. Air inlet notch; 12. Sealing groove; 13. Mounting hole; 2. Air guide portion; 21. Raised rib; 22. Transverse rib; 3. Air guide rib plate. DETAILED DESCRIPTION

[0018] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] Example 1

[0020] like Figure 1-4As shown, an oil-gas separator guide device includes a shell 1, on which is provided a guide portion 2 for changing the flow direction of the blowby gas. The side of the guide portion 2 in contact with the blowby gas is provided with a convex rib 21 extending along the flow direction of the blowby gas. The end of the convex rib 21 in the flow direction is also provided with a transverse rib 22. The guide portion 2 changes the flow direction of the blowby gas so that the oil droplets impact on the surface of the guide portion 2 by inertia and are intercepted and separated by the transverse rib 22.

[0021] This solution changes the flow direction of the blowby gas by providing a guide portion 2, and provides a convex rib 21 on the inner side of the guide portion 2 for diversion. After the blowby gas turns, larger oil droplets hit the inner side of the guide portion 2 due to inertia and are intercepted and gathered by the transverse ribs 22. The diverted blowby gas enters the oil-gas separator in an orderly manner, effectively reducing turbulence. In addition, larger oil droplets are separated in advance to prevent them from entering the oil-gas separator and causing saturation of the adsorption component. The adsorption component is only used to adsorb fine oil droplets, which has a better utilization effect.

[0022] The shell 1 is provided with an air inlet slot 11 , and the guide part 2 is provided around the air inlet slot 11 for allowing the blowby gas to enter the inlet of the guide part 2 . The guide part 2 is integrated with the shell 1 , and the air inlet slot 11 is provided to facilitate the introduction of the blowby gas into the guide part 2 .

[0023] Several guide ribs 3 are provided on the shell 1. The guide ribs 3 are arranged at the outlet of the guide part 2 to allow the blowby gas to enter the oil-gas separator in an orderly manner. The guide ribs 3 play a further guiding role. After the blowby gas passes through the ribs 21 in the guide part 2, it is further guided by the guide ribs 3, which can further stabilize the airflow.

[0024] The flow direction inside the guide part 2 is L-shaped, and the ribs 21 are distributed in an L-shape on the inner side of the guide part 2. This solution sets an L-shaped flow channel, that is, a right-angle flow channel, so that the blowby gas makes a right-angle turn when entering the guide part 2. Larger oil droplets hit the inner surface of the guide part 2 due to inertia, and are intercepted and gathered by the transverse ribs 22. After gathering, larger oil droplets are formed, which are not easily blown into the oil-gas separator by the blowby gas. The oil droplets fall obliquely on the upper surface of the shell 1 due to the blowing of the blowby gas, and then the oil droplets are returned to the crankcase by setting structures such as reflux grooves / reflux holes on the surface of the shell 1.

[0025] Specifically, the shell 1 needs to be connected to the oil-gas separator and have good sealing properties to prevent blowby gas from entering the atmosphere without separation. The shell 1 is provided with a mounting hole 13 for connecting to the oil-gas separator, and the surface of the shell 1 is also provided with a sealing groove 12 for docking. The sealing groove 12 can be used to fill a seal or set a matching structure, which can play a sealing effect when the oil-gas separator is connected.

[0026] The specific implementation method is as follows: the blowby gas enters the guide part 2 from the air inlet slot 11, is guided and turned by the ribs 21, and larger oil droplets are separated. Then the blowby gas leaves the guide part 2 and is further guided by the guide ribs 3 before entering the oil-gas separator for separation.

[0027] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. An oil-gas separator flow guide device, comprising a housing (1), characterized in that: The housing (1) is provided with a guide portion (2) for changing the flow direction of the blowby gas. The side of the guide portion (2) in contact with the blowby gas is provided with a convex rib (21) extending in the flow direction of the blowby gas. The end of the convex rib (21) in the flow direction is also provided with a transverse rib (22). The guide portion (2) changes the flow direction of the blowby gas so that oil droplets collide with the surface of the guide portion (2) through inertia and are intercepted and separated by the transverse rib (22).

2. The oil-gas separator flow guide device according to claim 1, characterized in that: The housing (1) is provided with an air intake slot (11) extending therethrough, and the air guide portion (2) is provided around the air intake slot (11) for allowing blowby gas to enter the inlet of the air guide portion (2).

3. The oil-gas separator flow guide device according to claim 2, characterized in that: The housing (1) is provided with a plurality of guide ribs (3), which are arranged at the outlet of the guide portion (2) and are used to allow blowby gas to enter the oil-gas separator in an orderly manner.

4. The oil-gas separator flow guide device according to any one of claims 1 to 3, characterized in that: The flow channel direction inside the flow guide portion (2) is L-shaped, and the convex ribs (21) are distributed in an L-shaped manner on the inner side of the flow guide portion (2).

5. The oil-gas separator flow guide device according to claim 4, characterized in that: The housing (1) is provided with a mounting hole (13) for connecting with the oil-gas separator, and the surface of the housing (1) is also provided with a sealing groove (12) for docking.

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