CN209244636U - A kind of iris type voltage adaptive controlling oil-gas separating device of engine - Google Patents

Abstract

The utility model provides a kind of iris type voltage adaptive controlling oil-gas separating device of engine, pre-separate device and primary separating device including mounting groove in valve mechanism cover is arranged in, the mounting groove offers air inlet, the primary separating device is made of at least two partitions, the valve mechanism cover is additionally provided with gas vent, the valve mechanism cover, pre-separate device and primary separating device combine to form gas channel, the pre-separate device includes: to be arranged in parallel in crude separation device and thin separator on bottom plate, the thin separator is located at crude separation device rear, the gas vent is arranged at thin separator rear；The iris type voltage adaptive controlling 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 addition, also having achieved the effect that automatic adjusument pre-separate device internal pressure by the way that check valve is arranged.

Description

A kind of iris type voltage adaptive controlling 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 iris type voltage adaptive controlling engine oil gas Separator.

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.

Such as a kind of Chinese invention patent " valve mechanism cover " of Publication No. CN205559013U, including cylinder head cover body, It is formed with oil gas pre-separation chamber on the inside of cylinder head cover body, which is equipped with pre-separation air inlet and pre-separation Gas outlet is successively arranged vertically in oil gas pre-separation room from the pre-separation air inlet to the pre-separation gas outlet Spaced multiple lateral partitions and be in the horizontal direction in the spaced multiple longitudinal baffles of labyrinth type, lateral partitions and vertical To the mazy gas channel for forming connection pre-separation air inlet and pre-separation gas outlet between partition, and outside valve mechanism cover Side wall is integrated with gs-oil separator.By the above content it can be found that the core of valve mechanism cover oil gas pre-separation in the prior art It is the mazy gas channel formed between lateral partitions and longitudinal baffle, but its single layer structure Oil-gas Separation ability is poor, When can not separate fine oil droplets, and have in separator pressure-difference fluctuation, the stability of flow velocity not can guarantee.

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 The problem of oil droplet adsorption recovery and collision are splashed also does not need periodic maintenance replacement filter core；Additionally it is possible to be filled according to separation Internal pressure is set, self adaptive control flow velocity promotes separative efficiency, 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 iris type voltage adaptive controlling oil-gas separating device of engine, comprising: is mounted on gas The pre-separate device and primary separating device of mounting groove in cylinder head cover, the mounting groove offer mixed for receiving oil gas in crankcase The air inlet of object is closed, the valve mechanism cover is additionally provided with the gas vent for the exhaust gas discharge after separating, the primary separating device It is made of at least two partitions, the bending channel being made of the partition has preferable effect, institute for separation super large oil droplet Valve mechanism cover, pre-separate device and primary separating device is stated to combine to form gas channel；The pre-separate device includes: parallel arrangement The first filter opening plate and the first filter baffle, the first oil back chamber on bottom plate and the first oil return pipe under it on bottom plate form thick Separator, the crude separation device are located at primary separating device rear, accelerate collision further for carrying out to gas mixture Separate 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 pipe under it, And the thin separator of the check valve composition on the second filter opening plate is set, after the thin separator is located at crude separation device Side further separates small oil droplet for again speed up colliding to gas mixture, and the gas vent setting is in subdivision from dress The side of postponing, the gas vent are used to that the exhaust gas after separation to be discharged；Due to the setting of check valve, the check valve when air pressure inside is smaller It is not turned on, air pressure inside guarantee separating effect is alleviated in check valve conducting when air pressure inside is excessive, so that pre-separate device has certainly Adapt to the characteristic of pressure regulation.

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 is provided on the second filter opening plate；Institute The outlet end for stating check valve is fixed on the second filter opening plate, and since the second filter opening plate is equipped with fine filtering hole, check valve goes out Mouth end meeting covering part fine filtering hole, when pre-separate device internal pressure is smaller, air pressure is not enough to impact opening check valve, oil gas Mixture can be accelerated by the unlapped fine filtering hole of check valve, pre-separate device internal pressure greatly to a certain extent When, air pressure is enough to impact opening check valve, and part gas mixture can flow through the fine filtering hole of check valve covering, reach adaptive Adjust the effect of pre-separate device internal pressure；It is provided on the second filter baffle and separates small oil droplet and water conservancy diversion is small for colliding Oil droplet filters rib to the two of the second oil back chamber, and the second oil back chamber setting filters baffle rear, the second filter baffle second For the hatch frame of non-close, the bottom of the second oil back chamber is arranged in second oil return 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 10~54, 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 iris type voltage adaptive controlling oil-gas separating device of engine can accelerate twice gas mixture, respectively It separates larger oil droplet and small oil droplet and is flowed out by oil back chamber, separative efficiency is high；In the absorption of small oil droplet, filter core is added due to secondary The impact force of speed does not have residue blocking, there is no need to regularly replace filter core, is able to solve periodic replacement maintenance issues；This Outside, which has reached automatic adjusument pre-separation dress by the way that check valve is arranged The effect for setting internal pressure realizes check valve and the hardened new effects for closing generation voltage adaptive controlling of the second filter opening；The iris type Voltage adaptive controlling oil-gas separating device of engine can also preset the specification (packet in coarse filtration hole and fine filtering hole according to the size of air inflow Include pore size and filter opening number), primary accelerate and the flow velocity after secondary acceleration, the effect of promotion shock separation oil droplet is ensured with this Rate.

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 three according to the second filter opening plate of the utility model one embodiment, filter core, the second filter baffle and check valve Tie up structural schematic diagram；

Fig. 8 is the structural schematic diagram that fine filtering hole is covered according to the outlet end of the check valve of the utility model one embodiment；

Fig. 9 is the three dimensional structure diagram according to the spill baffle of the utility model one embodiment；

Figure 10 is according to the separated structure schematic diagram at the beginning of two partitions of the utility model one embodiment；

Figure 11 is according to the separated structure schematic diagram at the beginning of four partitions of the utility model one embodiment；

Figure 12 is the structural schematic diagram according to the valve mechanism cover escape pipe of the utility model one embodiment；

Figure 13 is according to the working principle diagram under the check valve on state 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 check valve for the second oil return pipe, 214,215 be coarse filtration hole, and 216 be a filter rib, and 217 be fine filtering hole, and 218 be two filter muscle Item, 219 be three filter ribs, and 220 be needle-shaped lug boss, and 300 be primary separating device, and 301 be air inlet, and 302 be first partition, 303 be second partition, and 304 be third partition, and 305 be the 4th partition.

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 iris type voltage adaptive controlling oil-gas separating device of engine in an embodiment of the present invention, there is provided, packet Include the pre-separate device and primary separating device for being mounted on mounting groove in valve mechanism cover, primary separating device can gas mixture into Gas stage separate section oil droplet, gas mixture, which flows through, enters pre-separate device after primary separating device, in pre-separate device into Row accelerates collision separation twice, and oil droplet is discharged by oil return pipe.Fig. 1 is the cylinder according to the utility model one embodiment Housing is used to provide pre-separate device and the installation fixing position of primary separating device is set, as shown in Figure 1, Figure 2 and Figure 3, the cylinder head Cover 100 is equipped with the mounting groove 101 of installation pre-separate device 200 and primary separating device 300, and the mounting groove 101 is also provided with use In the air inlet 301 for receiving gas mixture in engine crankcase, after the primary separating device 300 is set to air inlet 301 Side is for carrying out initial gross separation for gas mixture, and diameter is greater than the oil droplet of 10um, the cylinder head in separation oil and gas mixture Cover 100 is additionally provided with gas vent 102；As shown in Figure 3 and Figure 4, the pre-separate device 200 includes being arranged in parallel on bottom plate 201 The first filter opening plate 205 and the first filter baffle 206, the first oil back chamber 207 on bottom plate 201 and its underpart the first oil return pipe The crude separation device of 208 compositions, the crude separation device is located at 300 rear of primary separating device, for handling in gas mixture Larger oil droplet (refer to droplet diameter be 2~10um)；On second filter opening plate 209, filter core 210 and the second filter baffle 211, bottom plate 201 The second oil back chamber 212 and its underpart the second oil return pipe 213 and the check valve 214 that is arranged on the second filter opening plate 209 The thin separator of composition, the thin separator is located at crude separation device rear, for handling the small oil in gas mixture Drop (refers to that droplet diameter is 0.1~2um)；The setting of gas vent 102 in the valve mechanism cover 100 is used at thin separator rear Exhaust gas after discharge separation oil droplet.

In one embodiment, as shown in Figure 10, 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 11, 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, if the air inflow of air inlet 301 is 60L/min, the hole in the coarse filtration hole 215 Diameter is set as 3mm, and the number in the coarse filtration hole 215 is set as 27, and the first filter opening plate 205 and first filters baffle 206 Spacing is set as 2mm, makes through the flow control of the first filter opening plate 205 in about 5m/s, at this point, flowing through 205 oil of the first filter opening plate The effect that gas mixture separates larger oil droplet with the first filter shock of baffle 206 under the setting of the flow velocity and spacing is good；At another In embodiment, 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 The number in hole 215 is set as 10, and the spacing of the first filter opening plate 205 and the first filter baffle 206 is set as 3mm, makes to pass through The flow control of first filter opening plate 205 in about 6m/s, at this point, flow through 205 gas mixture of the first filter opening plate the flow velocity and Away from setting under with first filter baffle 206 hit separate larger oil droplet effect it is good；In yet another embodiment, such as air inlet 301 Air inflow be 150L/min, 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 A, the spacing of the first filter opening plate 205 and the first filter baffle 206 is set as 5mm, makes the flow velocity by the first filter opening plate 205 Control is kept off under the setting of the flow velocity and spacing with the first filter in about 5m/s at this point, flowing through 205 gas mixture of the first filter opening plate The effect that plate 206 hits separation larger oil droplet 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 6mm, and the number in the coarse filtration hole 215 is set as 20, the first filter opening plate 205 It is set as 4mm with the spacing of the first filter baffle 206, is made through the flow control of the first filter opening plate 205 in about 8m/s, at this point, stream Larger oil droplet is separated with the first filter shock of baffle 206 under the setting of the flow velocity and spacing through 205 gas mixture of the first filter opening plate Effect 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 It is set to 3mm, the number in the coarse filtration hole 215 is set as 45, the spacing of the first filter opening plate 205 and the first filter baffle 206 It is set as 4mm, is made through the flow control of the first filter opening plate 205 in about 8m/s, at this point, it is mixed to flow through 205 oil gas of the first filter opening plate It is good to close 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.

In one embodiment, as shown in Figure 3 and Figure 4, the second filter opening plate 209 in the thin separator, filter core 210 With second filter baffle 211 it is snugly into each other be arranged on bottom plate 201, the second filter opening plate 209 be equipped with check valve 214；Institute The fine filtering hole 217 being provided on the second filter opening plate 209 for carrying out secondary acceleration to gas mixture is stated, gas mixture flows through When the second filter opening plate 209, gas mixture has carried out secondary acceleration under the action of fine filtering hole 217, and gas mixture can be to institute It states filter core 210 and carries out high speed impact, 210 lower part of filter core is hatch frame convenient for forming gas channel, and the filter core 210 is used Small oil droplet (referring to that droplet diameter is 0.1~2um) after adsorbing the secondary acceleration of gas mixture, wherein the material of filter core 210 can Think non-woven fabrics, felt, glass fibre or synthetic fibers, filter core 210 is good using these materials absorption oil droplet effect, and filter core 210 under the high speed impact effect of secondary acceleration, and surface will not assemble residue, therefore can exempt periodic replacement maintenance (maintenance filter pulp need to be regularly replaced by directlying adopt filter pulp progress Oil-gas Separation in the prior art though efficiency is high, be safeguarded Higher cost)；As shown in Figure 7, Figure 8, the outlet end of the check valve 214 is fixed on the second filter opening plate 209, due to second Filter opening plate 209 is equipped with fine filtering hole 217, therefore the outlet end meeting covering part fine filtering hole 217 of check valve 214, fills in pre-separation Set 200 internal pressures it is smaller when, air pressure be not enough to impact open check valve 214, gas mixture can be by check valve 214 not The fine filtering hole 217 of covering is accelerated, 200 internal pressure of pre-separate device greatly to a certain extent when (gas mixture flow velocity When greater than 18.2m/s), air pressure, which is enough to impact, opens check valve 214, and part gas mixture can flow through the covering of check valve 214 Fine filtering hole 217 has achieved the effect that 200 internal pressure of automatic adjusument pre-separate device；The principle of the check valve 214 is just Under beginning state, top cover withstands arrival end by spring force, only after inlet port pressure is greater than to a certain degree, top cover compression Spring makes check valve that (as shown in Figure 13) be connected, and medium can enter the fine filtering hole covered from outlet end through arrival end and flow out at this time； It is provided on the second filter baffle 211 and separates simultaneously two filters of the small oil droplet of water conservancy diversion to the second oil back chamber 212 of small oil droplet for colliding Rib 218, the lower part of the second filter baffle 211 are the hatch frame (forming gas channel) of non-close, are convenient for air-fuel mixture The flowing of object, gas mixture flow through under the effect of impact for filtering baffle 211 second after filter core 210, and small oil droplet passes through two filter muscle Item 218 flows into the second oil back chamber, under remaining gas mixture is entered by the hatch frame (gas channel) of the second filter baffle 211 Level-one separator；In one embodiment, if the air inflow of air inlet 301 is 60L/min, the aperture in the fine filtering hole 217 It is set as 2mm, the number in the fine filtering hole 217 is set as 22, and (wherein the outlet end of check valve 214 covers 4, non-coverlet 18 are covered with to the outlet end of valve 214, gas mixture can pass through 18 uncovered fine filtering holes 217), at this time in advance 200 air pressure inside of separator is insufficient to allow check valve 214 to be connected, by the flow control of the second filter opening plate 209 in about 18m/ S flows through 209 gas mixture of the second filter opening plate and impacts filter core 210 under the flow velocity, and 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；When air inlet 301 Air inflow when being promoted to 78L/min from 60L/min, 200 air pressure inside of pre-separate device increases, and check valve 214 is in gas pressure Power impact is lower to be connected (gas mixture can pass through 22 fine filtering holes 217), passes through the flow control of the second filter opening plate 209 at this time In about 18.8m/s, flows through 209 gas mixture of the second filter opening plate and impact filter core 210 under the flow velocity, filter core 210 adsorbs small Gas mixture continues to hit the second filter baffle 211 under the flow velocity after oil droplet, can obtain preferable small oil droplet separating effect； In yet another embodiment, if the air inflow of air inlet 301 is 60L/min, the aperture in the fine filtering hole 217 is set as 3mm, institute The number for stating fine filtering hole 217 is set as 10 (wherein outlet end coverings 2 of check valve 214, not by the outlet of check valve 214 End is covered with 8, and gas mixture can pass through 8 uncovered fine filtering holes 217), make the stream by the second filter opening plate 209 Speed control is in about 17.7m/s, and 200 air pressure inside of pre-separate device is insufficient to allow check valve 214 to be connected at this time, flows through the second filter 209 gas mixture of orifice plate impacts filter core 210 under the flow velocity, and gas mixture is in the flow velocity after filter core 210 adsorbs small oil droplet Under continue to hit the second filter baffle 211, preferable small oil droplet separating effect can be obtained；When air inlet 301 air inflow from When 60L/min is promoted to 80L/min, 200 air pressure inside of pre-separate device increases, and check valve 214 is led under gas pressure impact Logical (gas mixture can pass through 10 fine filtering holes 217) makes through the flow control of the second filter opening plate 209 in about 18.9m/s, It flows through 209 gas mixture of the second filter opening plate and impacts filter core 210 under the flow velocity, filter core 210 adsorbs air-fuel mixture after small oil droplet Object continues to hit the second filter baffle 211 under the flow velocity, can obtain preferable small oil droplet separating effect；In another embodiment In, if the air inflow of air inlet 301 is 120L/min, the aperture in the fine filtering hole 217 is set as 2.5mm, the fine filtering hole 217 Number be set as 30 (wherein check valve 214 outlet end cover 6, be not covered with 24 by the outlet end of check valve 214 A, gas mixture can pass through 24 uncovered fine filtering holes 217), make to exist by the flow control of the second filter opening plate 209 About 17m/s, 200 air pressure inside of pre-separate device is insufficient to allow check valve 214 to be connected at this time, flows through 209 oil gas of the second filter opening plate Mixture impacts filter core 210 under the flow velocity, and gas mixture continues to hit under the flow velocity after filter core 210 adsorbs small oil droplet Second filter baffle 211, can obtain preferable small oil droplet separating effect；When the air inflow of air inlet 301 is promoted from 120L/min When to 165L/min, 200 air pressure inside of pre-separate device increases, and (oil gas is mixed for conducting under gas pressure impact for check valve 214 30 fine filtering holes 217 can be passed through by closing object), make to flow through second in about 18.7m/s by the flow control of the second filter opening plate 209 209 gas mixture of filter opening plate impacts filter core 210 under the flow velocity, and gas mixture is in the stream after filter core 210 adsorbs small oil droplet Continue to hit the second filter baffle 211 under speed, preferable small oil droplet separating effect can be obtained；In yet another embodiment, such as into The air inflow of stomata 301 is 200L/min, and the aperture in the fine filtering hole 217 is set as 2.4mm, the number in the fine filtering hole 217 Being set as 54, (wherein the outlet end of check valve 214 covers 12, is not covered with 42 by the outlet end of check valve 214, oil gas Mixture can pass through 42 uncovered fine filtering holes 217), make through the flow control of the second filter opening plate 209 about 17.5m/s, 200 air pressure inside of pre-separate device is insufficient to allow check valve 214 to be connected at this time, flows through 209 oil gas of the second filter opening plate Mixture impacts filter core 210 under the flow velocity, and gas mixture continues shock under the flow velocity after filter core 210 adsorbs small oil droplet Two filter baffles 211, can obtain preferable small oil droplet separating effect；When the air inflow of air inlet 301 is promoted to from 200L/min When 270L/min, 200 air pressure inside of pre-separate device increases, and (air-fuel mixture is connected under gas pressure impact in check valve 214 Object can pass through 54 fine filtering holes 217), make to flow through the second filter in about 18.4m/s by the flow control of the second filter opening plate 209 209 gas mixture of orifice plate impacts filter core 210 under the flow velocity, and gas mixture is in the flow velocity after filter core 210 adsorbs small oil droplet Under continue to hit the second filter baffle 211, preferable small oil droplet separating effect can be obtained.

In one embodiment, as shown in Figure 3 and Figure 4, the pre-separate device 200 further includes spill baffle 204, institute Stating spill baffle 204 is hatch frame convenient for forming gas channel, as shown in figure 9, the spill baffle 204 is additionally provided with and is used for Collision separates oil droplet simultaneously three filter ribs 219 of the water conservancy diversion to the second oil back chamber 212；Gas mixture hits spill baffle 204 It hits, oil droplet flows into the second oil back chamber 212 by three filter ribs 219, remaining gas mixture flows through the opening knot of spill baffle 204 Structure (gas channel) enters gas vent 102, and 204 opening upwards of spill baffle are fixed on bottom plate 201, so that oil gas is mixed It closes object and directly hits 204 lower part of spill baffle, 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.Escape pipe 103 for gas mixture to be discharged is additionally provided on the gas vent 102 (such as Shown in Figure 12), the gas mixture after pre-separation can be imported other active separators by the setting of the escape pipe 103, It is actively separated to carry out oil gas.

It is adaptive according to the iris type of the utility model embodiment from above-described embodiment as can be seen that compared with prior art Answer pressure regulation oil-gas separating device of engine can be in gas mixture charging stage separate section oil droplet, then to gas mixture Accelerated twice, separate larger oil droplet and small oil droplet respectively and flowed out by oil back chamber, separative efficiency is high；It can also be according to air inlet The size of amount presets the specification (including pore size and filter opening number) in coarse filtration hole and fine filtering hole, ensures primary accelerate and two with this Flow velocity after secondary acceleration promotes the efficiency for hitting separation oil droplet, in addition, iris type voltage adaptive controlling engine oil gas separation dress It sets and has achieved the effect that automatic adjusument pre-separate device internal pressure by the way that check valve is arranged, after coping with air inflow increase The excessive problem of pre-separate device air pressure inside is finally able to satisfy the standard of the discharge of state six.

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 (9)

1. a kind of iris type voltage adaptive controlling oil-gas separating device of engine, comprising: the pre- of mounting groove in valve mechanism cover is arranged in Separator and primary separating device, the mounting groove offer air inlet, and the primary separating device is made of at least two partitions, The valve mechanism cover is additionally provided with gas vent, and the valve mechanism cover, pre-separate device and primary separating device combine to form gas channel, It 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；

Second filter opening plate, filter core and the second filter baffle, the second oil back chamber on bottom plate and the second oil return pipe under it and setting The thin separator of check valve composition on the second filter opening plate, the thin separator is located at crude separation device rear, described Gas vent is arranged at thin separator rear.

2. iris type voltage adaptive controlling oil-gas separating device of engine as described in claim 1, it is characterised in that: the rough segmentation From coarse filtration hole is provided on the first filter opening plate in device, a filter rib or needle-shaped protrusion are provided on the first filter baffle The lower section of the first filter baffle is arranged in portion, first oil back chamber, and the first filter baffle is the hatch frame of non-close, described The bottom of the first oil back chamber is arranged in first oil return pipe.

3. iris type voltage adaptive controlling oil-gas separating device of engine as described in claim 1, it is characterised in that: the subdivision From in device the second filter opening plate, filter core and second filter baffle it is snugly into each other be arranged on bottom plate；On the second filter opening plate It is provided with fine filtering hole, the outlet end of the check valve is fixed on the second filter opening plate, is provided with two filters on the second filter baffle Rib, the second oil back chamber setting filter baffle rear second, and the second filter baffle is the hatch frame of non-close, described The bottom of the second oil back chamber is arranged in second oil return pipe.

4. iris type voltage adaptive controlling oil-gas separating device of engine as described in claim 1, it is characterised in that: described pre- point It further include spill baffle from device, the spill baffle is additionally provided with three filter ribs.

5. iris type voltage adaptive controlling oil-gas separating device of engine as described in claim 1, it is characterised in that: the filter core Material be non-woven fabrics, felt, glass fibre or synthetic fibers in any one.

6. iris type voltage adaptive controlling oil-gas separating device of engine as described in claim 1, it is characterised in that: described One 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.

7. iris type voltage adaptive controlling oil-gas separating device of engine as described in claim 1, it is characterised in that: the exhaust The escape pipe for gas mixture to be discharged is additionally provided on hole.

8. iris type voltage adaptive controlling oil-gas separating device of engine as claimed in claim 2, it is characterised in that: the first filter opening The spacing of plate and the first filter baffle is 2~5mm, and the aperture in the coarse filtration hole is 3~6mm, the number in the coarse filtration hole is 10~ 45.

9. iris type voltage adaptive controlling oil-gas separating device of engine as claimed in claim 3, it is characterised in that: the fine filtering The aperture in hole is 2~3mm, and the number in the fine filtering hole is 10~54.