Oil-gas separator module integrated with pressure release valve

Abstract

The oil-gas separator module is characterized in that a gas inlet hole and a pressure relief hole are formed in the surface of a separation plate, a porous adsorption part is arranged on the downstream portion of the gas inlet hole, a valve element is arranged at the pressure relief hole, and the valve element is used for being opened for pressure relief when the upstream oil-gas pressure of the gas inlet hole reaches a threshold value; the valve element comprises a valve body and an elastic piece used for pressing the valve body on the pressure relief hole. According to the oil-gas separation module, the oil-gas separation function and the pressure relief function are integrated on the separation plate, opening or closing of the pressure relief valve is achieved through axial movement of the valve element, and therefore the oil-gas separation module can achieve high separation efficiency under the conditions that the blow-by amount is designed, and the blow-by amount is increased accidentally after abrasion; and it is guaranteed that the crankcase pressure of the engine meets the target value through a small amount of pressure relief, the integrated module, particularly the separated module, is easy to assemble on an assembly, and modular production and assembly are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to oil gas separation field, concretely relates to an oil gas separator module integrated with pressure relief valve. BACKGROUND

[0002] When the engine works, a part of exhaust gas will leak from the combustion chamber piston ring to the engine crankcase, and these exhaust gas mixes with the oil particles in the engine to form crankcase blowby gas. If the blowby gas is directly discharged into the atmosphere, it will cause air pollution. If it is directly discharged into the combustion chamber, due to the high oil content in the blowby gas, it will cause serious carbon deposition in the combustion chamber, reducing the power performance of the engine, so it is necessary to separate the oil in the blowby gas of the engine crankcase.

[0003] When designing the engine, two indexes are generally given: design blowby gas amount and wear blowby gas amount. The wear blowby gas amount is a safety value set by the engine manufacturer, and the wear blowby gas amount is generally 1.5 times the design blowby gas amount. When the engine is actually matched on the vehicle for market application, the blowby gas amount under most working conditions of the actual vehicle will not exceed the design blowby gas amount. The traditional oil-gas separation module with constant cross section is generally designed according to the wear blowby gas amount to ensure that the crankcase pressure is within the target range under the wear blowby gas amount. However, this design strategy often results in low separation efficiency of the separation module under the design blowby gas amount, which does not meet the actual application situation of the vehicle in the market. SUMMARY

[0004] The utility model aims at solving the above-mentioned problems and provides an oil gas separator module integrated with pressure relief valve.

[0005] The utility model realizes the above-mentioned purposes through the following technical schemes:

[0006] An oil gas separator module integrated with pressure relief valve, a plurality of gas inlet holes and pressure relief holes are arranged on the surface of the separation plate, a porous suction accessory is arranged downstream of the gas inlet hole, a valve core is arranged at the pressure relief hole, and the valve core is used to open and release pressure when the oil gas pressure upstream of the gas inlet hole reaches a threshold value.

[0007] As a further optimization scheme of the utility model, the valve core comprises a valve body and an elastic piece for pressing the valve body on the pressure relief hole.

[0008] As a further optimization scheme of the utility model, the oil gas separator module further comprises a cover plate, the cover plate is used to install the valve core and the porous suction accessory, and the cover plate and the porous suction accessory cooperate to make the oil gas of the gas inlet hole flow to the deflection after impacting the porous suction accessory, and the oil droplets are adsorbed on the porous suction accessory under the action of inertia.

[0009] As a further optimization scheme of the utility model, the cover plate and the separation plate are connected through at least two pairs of buckles, the buckle comprises a first buckle arranged on the separation plate and a second buckle arranged on the cover plate, and the buckles facilitate the disassembly and assembly of the cover plate and the replacement of the porous suction accessory.

[0010] As a further optimization scheme of the utility model, the surface of the separation plate is provided with an installation groove, the installation groove cooperates with the cover plate to form a space for installing the porous suction accessory, and a gap is formed after the installation groove cooperates with the cover plate, so that the blow-by gas of the air inlet hole is discharged from the gap below the installation groove when impacting the porous suction accessory.

[0011] As a further optimization scheme of the utility model, the installation groove is provided with an oil and gas outlet at the bottom, and the utility model further provides a flow structure of the installation groove.

[0012] As a further optimization scheme of the utility model, the valve body is provided with a valve rod in the axial direction, the cover plate is provided with a limiting hole matched with the valve rod and an axial limiting rib for limiting the stroke of the valve body.

[0013] As a further optimization scheme of the utility model, the separation plate is provided with a groove in the upstream direction of the blow-by gas, the pressure relief hole is arranged in the groove, and the pressure relief hole is provided with an annular protrusion extending in the direction of the valve body, which is used for cooperating with the valve body to form a seal.

[0014] As a further optimization scheme of the utility model, the groove is further provided with a multi-section limiting part surrounding the valve body, which is used for limiting the valve body, and the limiting part is used for limiting the valve body, so that the valve body always slides in the axial direction and cannot be deviated or deformed, thereby ensuring tight fitting.

[0015] As a further optimization scheme of the utility model, the pressure relief hole is arranged below the air inlet hole.

[0016] The utility model has the advantages that:

[0017] The utility model integrates the oil and gas separation function and the pressure relief function on the separation plate, and the opening or closing of the pressure relief valve is realized through the axial movement of the valve core, so that the oil and gas separation module can obtain high separation efficiency when designing the blow-by gas amount, and the crankcase pressure of the engine can meet the target value through a small amount of pressure relief when the blow-by gas amount accidentally increases after wear. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1It is the whole structure schematic view of the utility model.

[0019] Figure 2 It is the section structure schematic view of the utility model.

[0020] Figure 3 It is the separation plate schematic view of the utility model.

[0021] Figure 4 It is the assembly schematic view of the utility model.

[0022] Figure 5 It is the Figure 4 The structure enlarged view of A part in the middle.

[0023] In the drawing: 1, separation plate;101, air inlet hole;102, installation groove;103, first buckle;104, recess;105, annular protrusion;106, limiting portion;2, valve core;21, valve body;22, valve rod;23, elastic piece;3, cover plate;301, second buckle;302, limiting hole;303, axis limiting rib;4, porous suction accessory. Specific implementation

[0024] The following will be further described in detail in combination with the drawings, it is necessary to point out here that the following specific implementation is only used to further explain the present application, and cannot be understood as the limitation of the protection scope of the present application, the skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0025] Example 1

[0026] As Figures 1-5 The oil-gas separator module integrated with pressure relief valve, the separation plate 1 surface is provided with air inlet hole 101 and pressure relief hole, the downstream of air inlet hole 101 is provided with porous suction accessory 4, the pressure relief hole is provided with valve core 2, the valve core 2 is used to open and relieve pressure when the oil-gas pressure reaches threshold value in the upstream of air inlet hole 101, the valve core 2 includes valve body 21 and elastic piece 23 for pressing the valve body 21 on the pressure relief hole.The pressure relief hole is arranged below the air inlet hole 101, and the porous suction accessory 4 is made of fabric.

[0027] The present application integrates the oil-gas separation function and pressure relief function on the separation plate 1, and realizes the opening or closing of the pressure relief valve through the axial movement of the valve core 2, so that the oil-gas separation module can obtain higher separation efficiency in the design of blowby gas amount, and in the case of accidental increase of blowby gas amount after wear, the engine crankcase pressure can be ensured to meet the target value through a small amount of pressure relief, and the integrated oil-gas separation module is easy to assemble on the assembly, which is beneficial to modular production and assembly.

[0028] The oil-gas separator module further comprises a cover plate 3 for mounting the valve core 2 and the porous suction accessory 4, and after the cover plate 3 cooperates with the porous suction accessory 4, the oil-gas in the air inlet hole 101 is deflected after impacting the porous suction accessory 4, and the oil droplets are adsorbed on the porous suction accessory 4 under the action of inertia.

[0029] The cover plate 3 and the separation plate 1 are connected by at least two pairs of buckle fittings, the buckle fittings comprising a first buckle 103 arranged on the separation plate 1 and a second buckle 301 arranged on the cover plate 3, the buckle fitting connection facilitates disassembly of the cover plate 3 and replacement of the porous suction accessory 4, or in large engines, the cover plate can be fixed by bolts due to generally large blow-by gas pressure.

[0030] The surface of the separation plate 1 is extended to be provided with a mounting groove 102, the mounting groove 102 cooperates with the cover plate 3 to form a space for mounting the porous suction accessory 4, and after the mounting groove 102 cooperates with the cover plate 3, a gap is formed, so that the blow-by gas in the air inlet hole 101 is discharged from the gap below the mounting groove 102 when impacting the porous suction accessory 4, and then discharged from the gaps on both sides of the cover plate 3 to the downstream outlet direction.

[0031] The scheme further proposes a structure of the mounting groove, the bottom of the mounting groove 102 is provided with an oil-gas outlet, which has sufficient gap for oil-gas to pass through.

[0032] The valve body 21 is axially provided with a valve rod 22, the cover plate 3 is provided with a limiting hole 302 cooperating with the valve rod 22 and an axis limiting rib 303 for limiting the stroke of the valve body 21, the limiting hole 302 is arranged to stabilize the opening and closing of the valve core 2 and ensure smooth axial movement of the valve core.

[0033] The separation plate 1 forms a groove 104 towards the upstream direction of the blow-by gas, the pressure relief hole is arranged in the groove 104, and the pressure relief hole is provided with an annular protrusion 105 extending towards the valve body 21, which is used to cooperate with the valve body 21 to form a seal, and the annular protrusion 105 is arranged to form a seal, which is opened only when there is a large pressure to open the valve core 2 for pressure relief.

[0034] The groove 104 is further provided with a multi-section limiting part 106 surrounding the valve body 21, which is used to limit the valve body 21, and the limiting part 106 is arranged to limit the valve body 21, so that the valve body 21 always slides along the axial direction and does not deviate or deform, thereby avoiding the problem of not being tightly fitted.

[0035] The embodiment is specific to: under the engine design blow-by amount, the valve body 21 is pressed on the annular protrusion 105, the pressure relief hole is in the closed state, so that the unseparated oil gas only enters through the intake hole 101, impacts the porous suction accessory 4 for separation, the oil gas changes direction and flows downward after impacting the porous suction accessory 4, and the oil droplets are adsorbed due to inertia impacting the porous suction accessory 4, thereby improving the separation effect under the design blow-by amount; when the engine exceeds the design blow-by amount, the pressure relief valve is opened, the increased blow-by gas flows out from the pressure relief valve, the crankcase pressure rise is reduced, and it needs to be noted that the working condition of the engine exceeding the design blow-by amount is less, and under the comprehensive condition, the blow-by gas emission meets the standard.

[0036] The above-described embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application.

Claims

1. An integrated pressure relief valve gas separator module comprising a separator plate (1), characterized in that: The separation plate (1) is provided with an air inlet hole (101) and a pressure relief hole on the surface, the downstream of the air inlet hole (101) is provided with a porous suction accessory (4), the pressure relief hole is provided with a valve core (2), and the valve core (2) is used for opening and relieving pressure when the oil gas pressure upstream of the air inlet hole (101) reaches a threshold value.

2. The integrated pressure relief valve gas separator module of claim 1, wherein: The valve core (2) comprises a valve body (21) and an elastic member (23) for pressing the valve body (21) on the pressure relief hole.

3. The integrated pressure relief valve gas separator module of claim 2, wherein: Further comprising a cover plate (3) for mounting the valve core (2) and the porous suction accessory (4).

4. The integrated pressure relief valve gas separator module of claim 3, wherein: The cover plate (3) and the separation plate (1) are connected through at least two pairs of buckle fittings, the buckle fittings comprise a first buckle (103) arranged on the separation plate (1) and a second buckle (301) arranged on the cover plate (3).

5. The integrated pressure relief valve gas separator module of claim 3, wherein: The surface of the separation plate (1) is provided with a mounting groove (102), and the mounting groove (102) and the cover plate (3) cooperate to form a space for mounting the porous suction accessory (4).

6. An integrated pressure relief valve gas separator module according to claim 5, wherein: The bottom of the mounting groove (102) is provided with an oil gas outlet.

7. The integrated pressure relief valve gas separator module of claim 3, wherein: The valve body (21) is axially provided with a valve rod (22), the cover plate (3) is provided with a limiting hole (302) matched with the valve rod (22) and an axis limiting rib (303) for limiting the stroke of the valve body (21).

8. The integrated pressure relief valve gas separator module of claim 1, wherein: The separation plate (1) forms a groove (104) in the upstream direction of the blow-by gas, the pressure relief hole is arranged in the groove (104), and the pressure relief hole is provided with an annular protrusion (105) extending towards the valve body (21) for forming a seal with the valve body (21).

9. The integrated pressure relief valve gas separator module of claim 8, wherein: The groove (104) is further provided with a multi-section limiting part (106) surrounding the valve body (21) for limiting the valve body (21).

10. The integrated pressure relief valve gas separator module of claim 1, wherein: The pressure relief hole is arranged below the air inlet hole (101).

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