CN209586466U - A kind of partition gas drive formula oil-gas separating device of engine - Google Patents

Abstract

The utility model provides a kind of partition gas drive formula oil-gas separating device of engine.The partition gas drive formula oil-gas separating device of engine includes the pre-separate device and primary separating device that mounting groove in valve mechanism cover is arranged in, and the gas drive formula gs-oil separator outside valve mechanism cover is arranged in；The mounting groove offers air inlet, and the primary separating device is made of at least two partitions, and the valve mechanism cover is additionally provided with gas vent, and the gas vent is equipped with the escape pipe of connection gas drive formula gs-oil separator；The partition gas drive formula oil-gas separating device of engine can carry out secondary acceleration to gas mixture, separate larger oil droplet and small oil droplet respectively and flowed out by oil back chamber, separative efficiency is high；In the absorption of small oil droplet, filter core, there is no need to regularly replace filter core, is able to solve periodic replacement maintenance issues since the impact force of secondary acceleration does not have residue blocking.

Description

A kind of partition gas drive formula oil-gas separating device of engine

Technical field

The utility model belongs to Oil-gas Separation technical field, and in particular to a kind of partition gas drive formula engine oil gas separation dress It sets.

Background technique

The high-temperature fuel gas that engine generates at work can be scurried into crankcase by the gap between piston group and cylinder, Cause gas blowby.The ingredient of gas blowby is unburned fuel vapor, vapor and exhaust gas etc..Water vapor condensation dilutes machine in machine oil Oil reduces the service performance of machine oil；Sulfur dioxide in exhaust gas encounters air oxidation and generates sulfuric acid, and the oxidation of machine oil is accelerated to become Matter will lead to the corrosion and accelerated wear test of engine part；Gas blowby can also make the hypertonia of crankcase and destroy crankcase Sealing, is lost engine oil leakage；Accelerate the aging of machine oil, reduces reliability.Therefore, it is necessary to using crankcase ventilation system to altering Gas is controlled.Gas blowby can carry a large amount of oil gas, machine oil is caused to be lost, deteriorate simultaneously when flowing through crankcase ventilation system Discharge, it is therefore necessary to oil gas be separated, machine oil loss is reduced.By gs-oil separator being integrated in valve mechanism cover come to hair The oil gas that motivation excludes is separated, and traditional valve mechanism cover can only carry out single separation, and effect can not reach expected, and Passive type separation is relied solely on to be difficult to meet the requirement of six engine emission standard of state.

Such as a kind of Chinese utility model patent " valve mechanism cover " of Publication No. CN205559013U, including valve mechanism cover sheet Body, cylinder head cover body inside are formed with oil gas pre-separation chamber, and the oil gas pre-separation chamber is equipped with pre-separation air inlet and in advance Gas outlet is separated, is successively arranged from the pre-separation air inlet to the pre-separation gas outlet along vertical in oil gas pre-separation room The spaced multiple lateral partitions in direction and in the horizontal direction be in the spaced multiple longitudinal baffles of labyrinth type, lateral partitions The mazy gas channel for being connected to pre-separation air inlet and pre-separation gas outlet is formed between longitudinal baffle, and in cylinder head Cover lateral wall is integrated with gs-oil separator.By the above content it can be found that the core of valve mechanism cover Oil-gas Separation in the prior art The heart is the mazy gas channel formed between lateral partitions and longitudinal baffle, but its single layer structure Oil-gas Separation ability Difference, can not separate fine oil droplets, also cannot achieve passive type separation and active isolated combination, be unable to satisfy engine state six The requirement of discharge.

Such as the Chinese invention patent " independent external hanging type multistage gs-oil separator assembly " of Publication No. CN102705040B, it is A kind of gas drive formula active separator can carry out active separation to the gas mixture in crankcase, but only with active point It is unable to satisfy six discharge standard of state from device, can not also be classified processing super large oil droplet, larger oil droplet and fine oil droplets.

It is interior such as the Chinese invention patent application " oil and gas separating system built in valve mechanism cover " of Publication No. CN108049937A Set gs-oil separator, comprising: housing ontology and the labyrinth cavity and bottom cover that the housing ontology side is set, the labyrinth chamber One end of body is provided with the outgoing gas connection tube extended to outside housing, and top offers respirator socket；It is equipped in the labyrinth chamber body Coarse filtration orifice plate, winding type rectifier structure, refined filtration orifice plate and every position plate.By the above content it can be found that cylinder in the prior art Housing oil-gas pre-separation device is equipped with coarse filtration orifice plate and winding type rectifier structure, can be used for Oil-gas Separation, but super large oil droplet The oil droplet of 10um (diameter be greater than) is easy to mix with larger oil droplet (referring to that droplet diameter is 2~10um), and do not have oil droplet absorption with Diversion effect, the droplet diameter that will lead into refined filtration orifice plate is still very big, (refers to that droplet diameter is 0.1 for handling small oil droplet ~2um) there is very big influence；Winding type rectifier structure disclosed in the prior art can not solve gas mixture and touch at a high speed Oil droplet second-time breakage (collision is splashed) problem generated when hitting, oil droplet can not adsorb back after flowing through collision winding type rectifier structure It receives, can still be exported as gas mixture flows to, separative efficiency is low.

Utility model content

The purpose of the utility model is to overcome the defects of the above-mentioned prior art, provide the new partition gas drive formula of one kind and start Machine oil air separation can be classified separation super large oil droplet, larger oil droplet and fine oil droplets, and separative efficiency is high, moreover it is possible to solve Oil droplet adsorption recovery and collision splash the problem of, also do not need periodic maintenance replacement filter core, can be achieved at the same time passive type with Active separation is able to satisfy six engine calls of state.

The purpose of this utility model is achieved through the following technical solutions:

The utility model provides a kind of partition gas drive formula oil-gas separating device of engine, comprising: is arranged in valve mechanism cover The pre-separate device and primary separating device of interior mounting groove, and the gas drive formula gs-oil separator outside valve mechanism cover is set；Institute It states mounting groove and offers air inlet for receiving gas mixture in crankcase, the primary separating device is by least two partitions Composition, the bending channel being made of the partition have preferable effect for separation super large oil droplet, and the valve mechanism cover is also set There is the gas vent for the exhaust gas discharge after separating, the gas vent is equipped with the outlet of connection gas drive formula gs-oil separator Pipe, the valve mechanism cover, pre-separate device and primary separating device combine to form gas channel；The pre-separate device includes parallel The first filter opening plate being arranged on bottom plate and the first filter baffle, the first oil back chamber on bottom plate and the composition of the first oil return pipe under it Crude separation device, the crude separation device is located at primary separating device rear, for gas mixture carry out accelerating to collide into One step separates larger oil droplet；Second filter opening plate, filter core and the second filter baffle, the second oil back chamber on bottom plate and the second oil return under it The thin separator of pipe composition, the thin separator are located at crude separation device rear, for carrying out again to gas mixture Collision is accelerated further to separate small oil droplet, the gas vent is arranged at thin separator rear, and the gas vent passes through escape pipe Exhaust gas after separation is delivered to gas drive formula gs-oil separator.

The coarse filtration hole for being accelerated to gas mixture is provided on the first filter opening plate in the crude separation device, In one embodiment, it is provided on the first filter baffle and filters rib for the one of water conservancy diversion oil droplet to the first oil back chamber, again In one embodiment, the needle-shaped lug boss for increasing oil gas making contact area is provided on the first filter baffle, it is described Needle-shaped lug boss can effectively prevent oil droplet since high velocity impact causes second-time breakage, improve oil-gas separation efficiency；Described The lower section of the first filter baffle is arranged in one oil back chamber, and the first filter baffle is the hatch frame of non-close so as to gas mixture Flowing, the bottom of the first oil back chamber is arranged in first oil return pipe.

In one embodiment, the second filter opening plate in the thin separator, filter core and the second filter baffle are snugly into each other Ground is arranged on bottom plate；The fine filtering hole for carrying out secondary acceleration to gas mixture, institute are provided on the second filter opening plate It states and is provided on the second filter baffle for colliding the small oil droplet of separation and the small oil droplet of water conservancy diversion to the two of the second oil back chamber filters ribs, it is described The setting of second oil back chamber filters baffle rear second, and the second filter baffle is the hatch frame of non-close, second oil return The bottom of the second oil back chamber is arranged in pipe.

In one embodiment, the pre-separate device further includes spill baffle, the spill baffle be hatch frame just In forming gas channel, the spill baffle is additionally provided with for colliding separation oil droplet simultaneously three filter muscle of the water conservancy diversion to the second oil back chamber Item；Gas mixture hits spill baffle, and oil droplet flows into the second oil back chamber, remaining gas mixture by three filter ribs The hatch frame (gas channel) for flowing through spill baffle enters gas vent.

In one embodiment, being additionally provided in first oil return pipe and the second oil return pipe prevents exhaust gas recoil from entering pre- point Umbrella shape oil return valve from device, can be effectively prevented influences oil gas pre-separation efficiency because of exhaust gas recoil.

In one embodiment, the material of the filter core is any in non-woven fabrics, felt, glass fibre and synthetic fibers It is a kind of.

In one embodiment, the spacing of the first filter opening plate and the first filter baffle is 2~5mm, according to the air inlet of air inlet Size is measured, the aperture in the coarse filtration hole can be set to 3~6mm, and the number in the coarse filtration hole is set as 10~45, makes to pass through The flow control of first filter opening plate flows through the first filter opening leaf fat gas mixture and filters in the flow rates with first in 5~8m/s The effect that baffle hits separation larger oil droplet is good.

In one embodiment, according to the air inflow size of air inlet, the aperture in the fine filtering hole can be set to 2~ The number of 3mm, the fine filtering hole are set as 8~54, make to flow through by the flow control of the second filter opening plate in 15~30m/s The effect that second filter opening leaf fat gas mixture separates small oil droplet with the second filter baffle shock in the flow rates is good.

Compared with the prior art, the advantages of the utility model are:

The partition gas drive formula oil-gas separating device of engine can accelerate twice gas mixture, and separation is big respectively Oil droplet and small oil droplet are simultaneously flowed out by oil back chamber, and separative efficiency is high；In the absorption of small oil droplet, filter core is rushed due to secondary acceleration It hits power and does not have residue blocking, there is no need to regularly replace filter core, be able to solve periodic replacement maintenance issues；In addition, the hair Motivation oil-gas pre-separation device can also preset specification (including the pore size in coarse filtration hole and fine filtering hole according to the size of air inflow With filter opening number), primary accelerate and the flow velocity after secondary acceleration, the efficiency of promotion shock separation oil droplet is ensured with this.

Detailed description of the invention

The embodiments of the present invention are described further referring to the drawings, in which:

Fig. 1 is the valve mechanism cover schematic diagram of internal structure according to the utility model one embodiment；

Fig. 2 is the three dimensional structure diagram according to the valve mechanism cover mounting groove of the utility model one embodiment；

Fig. 3 is the schematic cross-section according to the valve mechanism cover mounting groove of the utility model one embodiment；

Fig. 4 is the three dimensional structure diagram according to the pre-separate device of the utility model one embodiment；

Fig. 5 is to be illustrated according to the three-dimensional structure of the first filter opening plate of the utility model one embodiment and the first filter baffle Figure；

Fig. 6 is that the three-dimensional structure for being equipped with needle-shaped lug boss according to the first of the utility model one embodiment the filter baffle is illustrated Figure；

Fig. 7 is the three-dimensional structure according to the second filter opening plate of the utility model one embodiment, filter core and the second filter baffle Schematic diagram；

Fig. 8 is the three dimensional structure diagram according to the spill baffle of the utility model one embodiment；

Fig. 9 is the first separated structure schematic diagram according to two partitions of the utility model one embodiment；

Figure 10 is the first separated structure schematic diagram according to four partitions of the utility model one embodiment；

Figure 11 is the structural schematic diagram according to the valve mechanism cover escape pipe of the utility model one embodiment；

Figure 12 is the structural schematic diagram according to the gas drive formula gs-oil separator of the utility model one embodiment；

In figure, 100 be valve mechanism cover, and 101 be mounting groove, and 102 be gas vent, and 103 be escape pipe, and 200 fill for pre-separation It sets, 201 be bottom plate, and 204 be spill baffle, and 205 be the first filter opening plate, and 206 filter baffle for first, and 207 be the first oil back chamber, 208 first oil return pipes, 209 be the second filter opening plate, and 210 be filter core, and 211 be the second filter baffle, and 212 be the second oil back chamber, 213 It is coarse filtration hole for the second oil return pipe, 215,216 be a filter rib, and 217 be fine filtering hole, and 218 be two filter ribs, and 219 be three filter muscle Item, 220 be needle-shaped lug boss, and 300 be primary separating device, and 301 be air inlet, and 302 be first partition, and 303 be second partition, 304 be third partition, and 305 be the 4th partition, and 400 be gas drive formula gs-oil separator, and 401 be exhaust gas entrance, and 402 be compressed gas Body entrance, 403 be mixed gas outlet, and 404 be oil return opening.

Specific embodiment

In order to make the purpose of this utility model, technical solution and advantage are more clearly understood, and pass through tool below in conjunction with attached drawing The utility model is further described in body embodiment.It should be appreciated that specific embodiment described herein is only to explain The utility model is not used to limit the utility model.

A kind of partition gas drive formula oil-gas separating device of engine in an embodiment of the present invention, there is provided, the partition gas Drive formula oil-gas separating device of engine includes the pre-separate device and primary separating device that mounting groove in valve mechanism cover is arranged in, and Gas drive formula gs-oil separator outside valve mechanism cover is set；Primary separating device can be in gas mixture charging stage separation unit Enter pre-separate device after dividing oil droplet, gas mixture to flow through primary separating device, is accelerated to touch twice in pre-separate device Separation is hit, and oil droplet is discharged by oil return pipe；Gas mixture is delivered to after pre-separate device is handled by escape pipe Gas drive formula gs-oil separator, implements further Oil-gas Separation.Fig. 1 is to be used according to the valve mechanism cover of the utility model one embodiment It is set in the installation fixing position for providing pre-separate device and primary separating device, as shown in Figure 1, Figure 2 and Figure 3, the valve mechanism cover 100 Mounting groove 101 equipped with installation pre-separate device 200 and primary separating device 300, the mounting groove 101 are also provided with for connecing The air inlet 301 of gas mixture in engine crankcase is received, the primary separating device 300 is set to 301 rear of air inlet use In gas mixture is carried out initial gross separation, diameter is greater than the oil droplet of 10um, the valve mechanism cover 100 in separation oil and gas mixture It is additionally provided with gas vent 102；As shown in figure 4, the pre-separate device 200 includes the first filter being arranged in parallel on bottom plate 201 The first oil return pipe 208 composition of orifice plate 205 and the first filter baffle 206, the first oil back chamber 207 on bottom plate 201 and its underpart Crude separation device, the crude separation device is located at 300 rear of primary separating device, for handling the larger oil droplet in gas mixture (referring to that droplet diameter is 2~10um)；Second time on second filter opening plate 209, filter core 210 and the second filter baffle 211, bottom plate 201 The thin separator of oil pocket 212 and second oil return pipe 213 of its underpart composition, after the thin separator is located at crude separation device Side, for handling the small oil droplet in gas mixture (referring to that droplet diameter is 0.1~2um)；Exhaust in the valve mechanism cover 100 Thin separator rear is arranged in for the exhaust gas after separating oil droplet to be discharged in hole 102, is additionally provided with and is used on the gas vent 102 The escape pipe 103 (as shown in figure 11) of gas mixture is discharged, the escape pipe 103 connects gas vent 102 and is pierced by cylinder head Gas mixture after pre-separation can be imported gas drive formula gs-oil separator 400 by the setting of cover 100, the escape pipe 103 Exhaust gas entrance 401, the gas drive formula gs-oil separator 400 are such as schemed using existing conventional equipment (such as cyclone separator) Shown in 12, the gas drive formula gs-oil separator 400 is additionally provided with compressed gas entrance 402, mixed gas outlet 403 and oil return opening 404, gas mixture carries out high velocity impact after entering gas drive formula gs-oil separator 400 via exhaust gas entrance 401, and oil droplet is by into one Step is separated；The compressed gas entrance 402 is for the compressed gas after sucking engine booster to push jet pump to generate Negative pressure separates required resistance to overcome to collide, and the oil droplet after separation flow back into engine sump tank by oil return opening 404, point Engine charge is introduced by mixed gas outlet 403 from the exhaust gas after oil droplet and the gas for entering compressed gas entrance 402 Pipe enters combustion chambers burn, is finally reached and the passive type of crankcase oils gas mixture is separated with active, make separating effect Reach six engine emission standard of state.

In one embodiment, as shown in figure 9, the primary separating device 300 is by first partition 302 and second partition 303 Composition, inner wall of the first partition 302 with second partition 303 respectively with 101 both ends of mounting groove is fixed, curved to be formed Labyrinth type oil-gas channel；In yet another embodiment, as shown in Figure 10, the primary separating device 300 is by first partition 302, Two partitions 303 composition, third partition 304 and the 4th partition 305 composition, the first partition 302, second partition 303, third every The inner wall of plate 304 and the 4th partition 305 respectively alternately with 101 both ends of mounting groove is fixed, to form curved labyrinth type oil Gas channel.

As shown in figure 5, the first filter opening plate 205 and the first filter baffle 206 in the crude separation device are arranged in parallel in bottom (Fig. 4 is referred to) on plate 201, and the coarse filtration for once being accelerated to gas mixture is provided on the first filter opening plate 205 Hole 215.In one embodiment, it is provided on the first filter baffle 206 and (refers to that droplet diameter is for colliding separation larger oil droplet 2~10um) simultaneously water conservancy diversion larger oil droplet is to a filter rib 216 of the first oil back chamber 207, and the setting of the first oil back chamber 207 is first Filter the lower section of baffle 206, the first filter baffle 206 is the hatch frame (convenient for forming gas channel) of non-close, described the The bottom of the first oil back chamber 207 is arranged in one oil return pipe 208；Gas mixture flows through after the acceleration of the first filter opening plate 205 with One filter baffle 206 is hit, and larger oil droplet flows into the first oil back chamber 207, remaining air-fuel mixture logistics by a filter rib 216 Opening portion (gas channel) outflow through the first filter baffle 206；In yet another embodiment, as shown in fig. 6, first filter The needle-shaped lug boss 220 for increasing oil gas making contact area is provided on baffle 206, the needle-shaped lug boss 220 can Effectively absorption high velocity impact first filters the larger oil droplet of baffle 206 and by oil droplet water conservancy diversion to the first oil back chamber 207, prevent larger oil droplet by Second-time breakage (larger oil droplet collision is easy to produce splashing) is caused in high velocity impact, improves oil-gas separation efficiency, larger oil droplet passes through Needle-shaped lug boss 220 flows into the first oil back chamber 207, remaining gas mixture flows through the opening portion of the first filter baffle 206 (gas channel) outflow.

In one embodiment, as the air inflow of air inlet 301 be 60L/min, the aperture in the coarse filtration hole 215 is set as 3mm, the number in the coarse filtration hole 215 are set as 27, the spacing setting of the first filter opening plate 205 and the first filter baffle 206 For 2mm, make through the flow control of the first filter opening plate 205 in about 5m/s, at this point, flowing through 205 gas mixture of the first filter opening plate The effect for separating larger oil droplet with the first filter shock of baffle 206 under the setting of the flow velocity and spacing is good；In another embodiment In, if the air inflow of air inlet 301 is 100L/min, the aperture in the coarse filtration hole 215 is set as 6mm, the coarse filtration hole 215 Number be set as 10, the spacing of the first filter opening plate 205 and the first filter baffle 206 is set as 3mm, makes by first The flow control of filter opening plate 205 is in about 6m/s, at this point, flowing through 205 gas mixture of the first filter opening plate in the flow velocity and spacing It is good that the lower effect for separating larger oil droplet with the first filter shock of baffle 206 is set；In yet another embodiment, as air inlet 301 into Tolerance is 150L/min, and the aperture in the coarse filtration hole 215 is set as 5mm, and the number in the coarse filtration hole 215 is set as 25, institute The spacing for stating the first filter opening plate 205 and the first filter baffle 206 is set as 5mm, makes to exist by the flow control of the first filter opening plate 205 About 5m/s, at this point, flowing through 205 gas mixture of the first filter opening plate filters baffle 206 with first under the setting of the flow velocity and spacing The effect for hitting separation larger oil droplet is good；In yet another embodiment, described thick if the air inflow of air inlet 301 is 270L/min The aperture of filter opening 215 is set as 6mm, and the number in the coarse filtration hole 215 is set as 20, the first filter opening plate 205 and first The spacing of filter baffle 206 is set as 4mm, makes through the flow control of the first filter opening plate 205 in about 8m/s, at this point, flowing through first 205 gas mixture of filter opening plate hits the effect for separating larger oil droplet under the setting of the flow velocity and spacing with the first filter baffle 206 It is good；In yet another embodiment, as the air inflow of air inlet 301 be 270L/min, the aperture in the coarse filtration hole 215 is set as 3mm, the number in the coarse filtration hole 215 are set as 45, the spacing setting of the first filter opening plate 205 and the first filter baffle 206 For 4mm, make through the flow control of the first filter opening plate 205 in about 8m/s, at this point, flowing through 205 air-fuel mixture of the first filter opening plate The effect that object separates larger oil droplet with the first filter shock of baffle 206 under the setting of the flow velocity and spacing is good.

In one embodiment, the second filter opening plate 209, filter core 210 as shown in Fig. 4, Fig. 7, in the thin separator With second filter baffle 211 it is snugly into each other be arranged on bottom plate 201；It is provided on the second filter opening plate 209 for oil gas Mixture carries out the fine filtering hole 217 of secondary acceleration, effect when gas mixture flows through the second filter opening plate 209, in fine filtering hole 217 Lower gas mixture has carried out secondary acceleration, and gas mixture can carry out high speed impact, the filter core 210 to the filter core 210 Lower part is hatch frame convenient for forming gas channel, and the filter core 210 is for adsorbing the small oil after the secondary acceleration of gas mixture Drop (refers to that droplet diameter is 0.1~2um), and wherein the material of filter core 210 can be fine for non-woven fabrics, felt, glass fibre or synthesis Dimension, filter core 210 using these materials absorption oil droplet effect it is good, and filter core 210 secondary acceleration high speed impact effect under, Surface will not assemble residue, therefore can exempt periodic replacement maintenance and (directly adopt filter pulp in the prior art and carry out oil gas point From though efficiency is high, maintenance filter pulp need to be regularly replaced, and maintenance cost is higher)；It is arranged on the second filter baffle 211 Have for colliding the small oil droplet of separation and two filter ribs 218 of the small oil droplet of water conservancy diversion to the second oil back chamber 212, the second filter baffle 211 lower part is the hatch frame (forming gas channel) of non-close, convenient for the flowing of gas mixture, air-fuel mixture logistics After filter core 210 under the effect of impact of the second filter baffle 211, small oil droplet flows into the second oil back chamber by two filter ribs 218, Excess oil gas mixture enters next stage separator by the hatch frame (gas channel) of the second filter baffle 211；In a reality It applies in example, if the air inflow of air inlet 301 is 60L/min, the aperture in the fine filtering hole 217 is set as 2mm, the fine filtering hole 217 number is set as 18, makes through the flow control of the second filter opening plate 209 in about 18m/s, at this point, flowing through the second filter opening 209 gas mixture of plate impacts filter core 210 under the flow velocity, and gas mixture is under the flow velocity after filter core 210 adsorbs small oil droplet Continue to hit the second filter baffle 211, preferable small oil droplet separating effect can be obtained；In yet another embodiment, such as air inlet 301 air inflow is 60L/min, and the aperture in the fine filtering hole 217 is set as 3mm, and the number in the fine filtering hole 217 is set as 8 It is a, make through the flow control of the second filter opening plate 209 in about 18m/s, exists at this point, flowing through 209 gas mixture of the second filter opening plate Filter core 210 is impacted under the flow velocity, gas mixture continues to hit the second filter baffle under the flow velocity after filter core 210 adsorbs small oil droplet 211, preferable small oil droplet separating effect can be obtained；In yet another embodiment, if the air inflow of air inlet 301 is 120L/ Min, the aperture in the fine filtering hole 217 are set as 2.5mm, and the number in the fine filtering hole 217 is set as 20, make through the second filter The flow control of orifice plate 209 is in about 20m/s, at this point, flow through 209 gas mixture of the second filter opening plate impacts filter under the flow velocity Core 210, gas mixture continues to hit the second filter baffle 211 under the flow velocity after filter core 210 adsorbs small oil droplet, can obtain Preferable small oil droplet separating effect；In yet another embodiment, if the air inflow of air inlet 301 is 180L/min, the fine filtering The aperture in hole 217 is set as 2.5mm, and the number in the fine filtering hole 217 is set as 23, makes the stream by the second filter opening plate 209 Speed control is in about 27m/s, at this point, flow through 209 gas mixture of the second filter opening plate impacts filter core 210, filter core 210 under the flow velocity Gas mixture continues to hit the second filter baffle 211 under the flow velocity after adsorbing small oil droplet, can obtain preferable small oil droplet point From effect；In yet another embodiment, if the air inflow of air inlet 301 is 260L/min, the aperture setting in the fine filtering hole 217 Number for 3mm, the fine filtering hole 217 is set as 24, makes through the flow control of the second filter opening plate 209 in about 27m/s, this When, it flows through 209 gas mixture of the second filter opening plate and impacts filter core 210 under the flow velocity, oil gas is mixed after filter core 210 adsorbs small oil droplet It closes object to continue to hit the second filter baffle 211 under the flow velocity, preferable small oil droplet separating effect can be obtained；In another implementation In example, if the air inflow of air inlet 301 is 270L/min, the aperture in the fine filtering hole 217 is set as 2mm, the fine filtering hole 217 Number be set as 54, make through the flow control of the second filter opening plate 209 in about 30m/s, at this point, flowing through the second filter opening plate 209 gas mixtures impact filter core 210 under the flow velocity, filter core 210 adsorb after small oil droplet gas mixture under the flow velocity after It is continuous to hit the second filter baffle 211, preferable small oil droplet separating effect can be obtained.

In one embodiment, the pre-separate device 200 further includes spill baffle 204, and the spill baffle 204 is Hatch frame is convenient for forming gas channel, and as shown in Fig. 4, Fig. 8, the spill baffle 204 is additionally provided with for colliding separation oil Drip and water conservancy diversion to the second oil back chamber 212 three filter ribs 219；Gas mixture hits spill baffle 204, and oil droplet passes through Three filter ribs 219 flow into the second oil back chambers 212, remaining gas mixture flows through the hatch frame of spill baffle 204, and (oil gas is logical Road) enter gas vent 102,204 opening upwards of spill baffle are fixed on bottom plate 201, so that gas mixture is direct 204 lower part of spill baffle is hit, oil droplet passes through three filter ribs 219 under the effect of gravity and flows into the second oil back chamber 212.

In one embodiment, it with continued reference to Fig. 4, is additionally provided in first oil return pipe 208 and the second oil return pipe 213 It prevents exhaust gas recoil from entering the umbrella shape oil return valve (not shown) of pre-separate device 200, can be effectively prevented because exhaust gas recoils And influence oil gas pre-separation efficiency.

From above-described embodiment as can be seen that compared with prior art, according to the partition gas drive formula of the utility model embodiment Engine oil gas pre-separate device can accelerate twice gas mixture, separate larger oil droplet and small oil droplet respectively and pass through Oil back chamber outflow, separative efficiency are high；Specification (including the aperture in coarse filtration hole and fine filtering hole can also be preset according to the size of air inflow Size and filter opening number), the flow velocity after primary acceleration and secondary acceleration is ensured with this, promotes the efficiency for hitting separation oil droplet, most It is able to satisfy the standard of the discharge of state six eventually.

What the reference in this specification for " some embodiments ", " one embodiment " or " embodiment " etc. referred to is knot Special characteristic described in the embodiment, structure or property is closed to be included at least one embodiment.Therefore, phrase is " each In a embodiment ", " in some embodiments ", " in one embodiment " or " in embodiment " etc. throughout the specification The appearance of each place not necessarily refers to identical embodiment.In addition, special characteristic, structure or property can be at one or more It is combined in any way as suitable in a embodiment.Therefore, in conjunction with shown in one embodiment or description special characteristic, structure Or property wholly or partly can be combined unlimitedly with the feature of one or more other embodiments, structure or property, As long as the combination is not non-logicality or cannot work.In addition, each element in illustrations is just to illustrating It is bright, it is not necessarily drawn to scale.

It is thus described several aspects of at least one embodiment of the utility model, it will be understood that art technology Various changes, modification and improvement are easy to carry out for personnel.This changes, modifications and improvement are intended to the essence in the utility model In mind and range.

Claims (7)

1. a kind of partition gas drive formula oil-gas separating device of engine, comprising: the pre-separation dress of mounting groove in valve mechanism cover is arranged in It sets and primary separating device, and the gas drive formula gs-oil separator outside valve mechanism cover is set；The mounting groove offers air inlet Hole, the primary separating device are made of at least two partitions, and the valve mechanism cover is additionally provided with gas vent, and the gas vent is equipped with The escape pipe of gas drive formula gs-oil separator is connected, the valve mechanism cover, pre-separate device and primary separating device combine to form oil gas Channel, which is characterized in that the pre-separate device includes:

The first filter opening plate being arranged in parallel on bottom plate and the first filter baffle, the first oil back chamber on bottom plate and first time under it The crude separation device of oil pipe composition, the crude separation device are located at primary separating device rear；First in the crude separation device It is provided with coarse filtration hole on filter opening plate, is provided with needle-shaped lug boss on the first filter baffle, the first oil back chamber setting is the The lower section of one filter baffle, the first filter baffle are the hatch frame of non-close, and first oil return pipe is arranged in the first oil return The bottom of chamber；Second filter opening plate, filter core and the second filter baffle, the second oil back chamber on bottom plate and the composition of the second oil return pipe under it Thin separator, the thin separator is located at crude separation device rear, and the gas vent is arranged at thin separator rear.

2. partition gas drive formula oil-gas separating device of engine as described in claim 1, it is characterised in that: the thin separator In the second filter opening plate, filter core and second filter baffle it is snugly into each other be arranged on bottom plate；It is provided on the second filter opening plate Fine filtering hole is provided with two filter ribs on the second filter baffle, and the second oil back chamber setting filters baffle rear second, described Second filter baffle is the hatch frame of non-close, and the bottom of the second oil back chamber is arranged in second oil return pipe.

3. partition gas drive formula oil-gas separating device of engine as described in claim 1, it is characterised in that: the pre-separate device It further include spill baffle, the spill baffle is additionally provided with three filter ribs.

4. partition gas drive formula oil-gas separating device of engine as described in claim 1, it is characterised in that: the material of the filter core For any one in non-woven fabrics, felt, glass fibre or synthetic fibers.

5. partition gas drive formula oil-gas separating device of engine as described in claim 1, it is characterised in that: in first oil return Pipe and the second oil return pipe are additionally provided with the umbrella shape oil return valve for preventing exhaust gas recoil from entering pre-separate device.

6. partition gas drive formula oil-gas separating device of engine as described in claim 1, it is characterised in that: the first filter opening plate Spacing with the first filter baffle is 2~5mm, and the aperture in the coarse filtration hole is 3~6mm, and the number in the coarse filtration hole is 10~45 It is a.

7. partition gas drive formula oil-gas separating device of engine as claimed in claim 2, it is characterised in that: the hole in the fine filtering hole Diameter is 2~3mm, and the number in the fine filtering hole is 8~54.