CN206668359U - A kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator - Google Patents
A kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator Download PDFInfo
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- CN206668359U CN206668359U CN201720247743.8U CN201720247743U CN206668359U CN 206668359 U CN206668359 U CN 206668359U CN 201720247743 U CN201720247743 U CN 201720247743U CN 206668359 U CN206668359 U CN 206668359U
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- labyrinth
- inner chamber
- dividing plate
- respirator
- chamber
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Abstract
The utility model discloses a kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator, including valve case inner chamber, check valve, multistage labyrinth cavity, braid fabric, respirator pad and respirator cover plate；The multistage labyrinth cavity is cast into integral piece, including labyrinth chamber base, labyrinth chamber peripheral envelope, inner chamber dividing plate I, inner chamber dividing plate II and inner chamber dividing plate III with the valve case inner chamber；The labyrinth chamber base is located at one jiao of case as a valve case top cover part simultaneously, and labyrinth chamber peripheral envelope is cast on labyrinth chamber base, and inner chamber dividing plate I, inner chamber dividing plate II and inner chamber dividing plate III are cast on labyrinth chamber base and peripheral envelope inner side；The braid fabric is placed between inner chamber dividing plate II and inner chamber dividing plate III；The respirator cover plate is installed on labyrinth chamber peripheral envelope；Respirator pad pad is located between labyrinth chamber peripheral envelope and respirator cover plate.The utility model complete machine PM discharges compared with original structure can reduce by more than 20%.
Description
Technical field
The present invention relates to Diesel Engine Breather and valve case, is particularly relevant to single cylinder diesel respirator.
Background technology
When diesel engine works, in piston compression, expansion and exhaust process, inevitable that in a small amount of cylinder
High-temperature fuel gas and waste gas are leak into crankcase by the gap of piston ring, and with the abrasion of engine, aging, the amount of leaking into meeting
It is more and more.On the other hand, as the heat of high-temperature component is constantly taken back oil sump by the continuous running of diesel engine, lubricating oil,
Oil sump temperature is set constantly to raise, under high temperature action, the lightweight volatile component in lubricating oil can be evaporated constantly, enter one
Pressure in step increase crankcase.Ultimately result in machine oil and scurry into gas in-cylinder combustion, cause engine oil consumption bigger than normal, diesel PM emissions increase
Add.
The single-cylinder vertical-type diesel engine of existing domestic volume production carries out bent axle with respirator using single ball-type check valve
Case is divulged information, and can have following deficiency in actual use：1. Oil-gas Separation only is realized by gravity function, its low separation efficiency, and it is difficult
To isolate droplet in the machine oil in exhalation waste gas；2. the requirement on machining accuracy of pair ball moved up and down and one-way valve seat compared with
Height, but machining accuracy is difficult to ensure that in actual production process so that the reliability of this respirator is poor, causes the single cylinder of volume production
The crankcase negative pressure fluctuation of vertical diesel engine is big, ultimately causes that consumption of lubricating oil difference is big, influences the particulate emission of diesel engine.China
Non-rice habitats diesel emission standard is constantly plus tight, has tightened up regulation to particulate emission, there are some researches show diesel oil tail
The particulate emission of gas about 50% derives from imperfect combustion machine oil, so successful design goes out and a can effectively reduce single cylinder and stand
The respirator of formula diesel engine lubricating oil consumption is very crucial.
The present invention is directed to the deficiency of the existing respirator of single-cylinder vertical-type diesel engine, the check valve except utilizing ball control,
Add multistage labyrinth type inner chamber and carry out second level Oil-gas Separation, the is carried out using braid fabric in rear part gas channel
Three-level hydrocarbon filter separates, and designs the cheap Oil-gas Separation of a Oil-gas Separation rate height, reliable operation, compact, cost
Type single cylinder diesel respirator, and be integrated with valve case, be formed as the valve cover with multistage Oil-gas Separation respirator
Shell component.
The content of the invention
The present invention for single-cylinder vertical-type diesel engine single use ball-type check valve respirator oil-gas separation efficiency it is relatively low,
Poor reliability, consumption of lubricating oil are high and the shortcomings of big is fluctuated in batch production, add multistage labyrinth type inner chamber and metal screen is carried out
The second level and third level Oil-gas Separation, by rational deployment and design, triplicity in valve case and is formed into one, there is provided
A kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator, its reliable operation, can be separated
Go out the fine oil droplets that check valve can not be isolated；Separative efficiency is improved, stable crankcase negative pressure is formed, effectively reduces single cylinder bavin
Oil machine consumption of lubricating oil, makes diesel PM emissions decline to a great extent.
The present invention is to realize above-mentioned technical purpose by following technological means.
A kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator, it is characterised in that：Bag
The inner chamber of case containing valve, check valve, multistage labyrinth cavity, braid fabric, respirator pad and respirator cover plate.It is described more
Level labyrinth cavity includes labyrinth chamber base, labyrinth chamber peripheral envelope, inner chamber dividing plate I, inner chamber dividing plate II and inner chamber dividing plate III, entirely
Multistage labyrinth cavity is cast as one with valve case inner chamber body, and wherein labyrinth chamber base is simultaneously as a valve case top cover part
Positioned at one jiao of case, labyrinth chamber peripheral envelope is cast on labyrinth chamber base, inner chamber dividing plate I, inner chamber dividing plate II and inner chamber dividing plate
III be cast on labyrinth chamber base and peripheral envelope on the inside of and two neighboring dividing plate between staggeredly opposition installation form S-shaped gas
Circulation road；The braid fabric is placed between inner chamber dividing plate II and inner chamber dividing plate III；The respirator cover plate is installed on labyrinth
On chamber peripheral envelope, fixed by six flanged bolts；The respirator pad pad is located at labyrinth chamber peripheral envelope and breathing
Between device cover plate.
Further, valve case inner chamber internal check valve upper surface escape pipe is extended on labyrinth chamber base, the mouth of pipe
Positioned at labyrinth chamber base bottom, the air inlet pipe mouth of pipe extends above base about 2mm, positioned at base top, prevents the machine oil after separation
Into air inlet pipe.
Further, the inclined angle alpha of the labyrinth chamber base should be 5 °~10 °, by the air inlet pipe mouth of pipe tilt down in
The escape pipe mouth of pipe, the increase of base bottom have diameter about 1.5mm spill ports, and the oil droplet for enabling to isolate flows into along inclined bottom
Spill port enters valve case inner chamber.
Further, the labyrinth chamber peripheral envelope is in irregular shape, is cast on labyrinth chamber base, two of which wall
Positioned at valve case edge, two sides is located on case top cover by two bolts hole in addition, can effectively utilize valve cover shell-side face
Original structure and overhead space, save material.
Further, the labyrinth chamber peripheral envelope wall and inner chamber dividing plate I, inner chamber dividing plate I and inner chamber dividing plate II, inner chamber
Dividing plate II and inner chamber dividing plate III, inner chamber dividing plate III and another wall of peripheral envelope, four are respectively constituted along airflow direction from bottom to top
Individual labyrinth type inner chamber.
Further, the escape pipe mouth of pipe and the air inlet pipe mouth of pipe are confused positioned at first and the 4th respectively on the labyrinth chamber base
In uterine cavity, the waste gas for being mixed with machine oil for breathing out crankcase first passes through the preliminary Oil-gas Separation of check valve progress of ball control, tightly
Then the labyrinth type inner chamber progress second level is entered by escape pipe and the third level separates, the gas for separating end is entered by air inlet pipe
The air intake duct of cylinder head, separative efficiency is improved, and form the positive crankcase ventilation (PCV) of closed, ensure crankcase waste gas zero-emission
Put.
Further, the inner chamber dividing plate I, inner chamber dividing plate II and inner chamber dividing plate III are staggeredly cast, and are parallel to each other to circumference
Housing wherein bottom surface, septum plate length are chosen to be the 1/2~2/3 of the circumferential base end face length of side, with increase exhaled gas inner chamber every
Effective shock on plate, helps Oil-gas Separation.
Further, the labyrinth chamber peripheral envelope top surface is machined with six internal thread holes, for installation bolt.
Further, the respirator cover plate peripheral shape is consistent with peripheral envelope shape, will by six flanged bolts
Cover plate is anchored in peripheral envelope.
The beneficial effects of the invention are as follows：On the basis of ball-type check valve, add multistage labyrinth cavity and carry out oil gas
The second level separation, in rear part gas channel by braid fabric carry out third level Oil-gas Separation, by respirator function
Part and valve case cast solid, simple in construction, reliable operation.By rationally designing labyrinth cavity shell on valve case
Position and inner chamber dividing plate I, inner chamber dividing plate II and inner chamber dividing plate III in the position of enclosure interior, form four continuous labyrinths
Formula inner chamber, the efficiency of Oil-gas Separation in waste gas is lifted, isolates the small oil droplet that check valve can not separate, it is real by braid fabric
Now breathe out waste gas in oil gas subdivision from, it is ensured that separate and enter back into cylinder head air inlet in the crankcase waste gas of end after inorganic oil
Road.The valve casing component of multistage Oil-gas Separation respirator is carried using this, air pressure and air pressure in air intake duct in crankcase can be made
Reach balance, finally make to form certain negative pressure in crankcase, can preferably control complete machine consumption of lubricating oil, reduce PM discharges.
Brief description of the drawings
Fig. 1 is bowing for the single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator of the present invention
View.
Fig. 2 is cuing open for the single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator of the present invention
View.
Reference is as follows：
1- valve cases inner chamber, 2- bolts hole, 3- labyrinth chamber bases, 4- inner chambers dividing plate II, 5- labyrinth chamber peripheral envelopes, 6-
Inner chamber dividing plate III, 7- air inlet pipe, the flanged bolts of 8-, 9- braid fabrics, 10- inner chambers dividing plate I, 11- escape pipes, 12- are unidirectional
Valve, 13- spill ports, 14- respirator pads, 15- respirator cover plates.
Embodiment
The invention provides a kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator, its
Mainly include valve case inner chamber, check valve, multistage labyrinth cavity, braid fabric, respirator pad and respirator cover plate.
The multistage labyrinth cavity includes labyrinth chamber base, labyrinth chamber peripheral envelope, inner chamber dividing plate I, inner chamber dividing plate II and inner chamber dividing plate
III, braid fabric is placed between inner chamber dividing plate II and inner chamber dividing plate III, and multistage labyrinth chamber body is located at the top of valve case inner chamber
Portion, both are formed by casting and integrator, wherein labyrinth chamber base are simultaneously as a valve case top cover part, labyrinth chamber week
To shell cast on labyrinth chamber base, inner chamber dividing plate I, inner chamber dividing plate II and inner chamber dividing plate III be cast on labyrinth chamber base and
On the inside of peripheral envelope.5 °~10 ° of gradient be present in the labyrinth chamber base, valve case internal memory connection crankcase contain
Oil gas body enters respirator base through check valve from escape pipe, and oil gas filters through multistage labyrinth separation, then through braid fabric, machine
Oil is separated, and gas enters in cylinder cap air intake duct to cylinder through air inlet pipe, the machine oil of separation by the diameter of base bottom about
1.5mm spill port is flowed back in valve case.Air inlet pipe stretching, which is higher by respirator base about 2mm, prevents machine oil from entering air inlet pipe,
The respirator cover plate is anchored in peripheral envelope by flanged bolt, ensures the sealing of multistage labyrinth chamber.This is with multistage oil gas
The single-cylinder vertical-type diesel engine valve casing component of separation respirator can effectively improve the efficiency of Oil-gas Separation, maintain crankcase steady
Determine negative pressure, reduce consumption of lubricating oil.Experiment proves：Using the valve casing component with respirator, diesel engine lubricating oil consumption is obvious
Reduce, complete machine PM, which is discharged, compared with original machine mechanism can reduce by more than 20%.
Below in conjunction with the accompanying drawings and specific embodiment the invention will be further described, but protection scope of the present invention is not
It is limited to this.
It can be seen that this component is mainly comprising valve case inner chamber, check valve, multistage labyrinth cavity, gold from Fig. 1, Fig. 2
Belong to wire gauze filter, respirator pad and respirator cover plate.
The multistage labyrinth cavity includes labyrinth chamber base 3, labyrinth chamber peripheral envelope 5, inner chamber dividing plate I10, inner chamber dividing plate
II4, inner chamber dividing plate III 6, whole multistage labyrinth cavity formed by casting and with the integrator of valve case inner chamber 1, wherein labyrinth
Bottom of chamber seat 3 is located at one angle as a valve case top cover part simultaneously, and labyrinth chamber peripheral envelope 5 is cast in labyrinth chamber base 3
On, it is mainly using check valve 12, escape pipe 11 and air inlet pipe 7 in the locus of valve case inner chamber 1, saving material, drop
The height of low uterine cavity.Inner chamber dividing plate I10, inner chamber dividing plate II 4 and the inner chamber dividing plate III 6 are staggeredly cast in enclosure interior, and
Should be parallel to the wall of peripheral envelope 5, it mainly has two effects：1st, prevent that the waste gas that is breathed out from respirator check valve 12 is direct
Flow to air inlet pipe 7, the length of increase exhaled gas active path in the lumen, knock-on effect of the increase waste gas on dividing plate, make
Machine oil in waste gas has the time condensation aggregation of abundance, increases oil gas separation；2nd, fixed braid fabric 9, prevents metal
Wire gauze filter 9 rocks in intracavitary.
The labyrinth chamber peripheral envelope 5, inner chamber dividing plate I 10, inner chamber dividing plate II 4 and inner chamber dividing plate III 6, by setting meticulously
Meter so that form three labyrinth type inner chambers：Along along air motion path, the wall of labyrinth chamber peripheral envelope 5 and the structure of inner chamber dividing plate I 10
Into first labyrinth type inner chamber, inner chamber dividing plate I 10 and inner chamber dividing plate II 4 form second labyrinth type inner chamber, inner chamber dividing plate II4 and
Inner chamber dividing plate III 6 forms the 3rd labyrinth type inner chamber, and inner chamber dividing plate III 6 and 5 another wall of peripheral envelope form the 4th labyrinth
Formula inner chamber.
There is 5 °~10 ° of gradient in the respirator base 3, angle is too small to be unfavorable for oil return, and angle can then increase greatly very much
Add gas-flow resistance, reduce separating effect.For the mouth of pipe of escape pipe 11 in first labyrinth chamber, the mouth of pipe of air inlet pipe 7 is located at the 4th
In labyrinth chamber, and diameter about 1.5mm spill port 13 is drilled out in the bottom of base 3, pass through this design and layout, the fan of formation
Palace formula inner chamber can improve the efficiency of respirator Oil-gas Separation, and its operation principle is as follows：By the useless of the initial gross separation of check valve 12
Gas enters first labyrinth chamber by escape pipe 11, and the inner chamber dividing plate being staggered stops and forcibly changing air motion direction,
Because oil droplet and both gas density are different, machine oil drop mass is big, momentum also just relatively larger than air, passes through the work of inertia impact
With, oil droplet is struck on inwall and dividing plate and be adsorbed, and separated from gaseous mixture, under gravity along labyrinth
The aggregation of the angle of inclination of bottom of chamber seat 3 moves down, and flows back to valve case inner chamber 1 by spill port 13, finally flow to rocker arm chamber, separation knot
The gas of beam enters cylinder head air intake duct into the 4th labyrinth chamber by the mouth of pipe of air inlet pipe 7, final and pass through the new of air filter
Fresh air together enters combustion chamber.
First labyrinth chamber volume that the wall of labyrinth chamber peripheral envelope 5 and inner chamber dividing plate I 10 are formed should be greater than other
Three cavity volumes, reason are that its flow velocity degree can reduce after crankcase waste gas enters labyrinth chamber by the mouth of pipe of escape pipe 11, air-flow
Average pressure can increase, and gas can be by compression swelling, and increasing volume helps to reduce the resistance exhaled into labyrinth chamber, improves labyrinth
Chamber job stability, the oil-gas separation efficiency after increasing.
The braid fabric 9 should be placed in suitable labyrinth type inner chamber, if braid fabric 9 is placed in into first or
It in two inner chambers, then can increase the resistance of exhaled gas, increase the work load of braid fabric 9, and wire can not be played
The main function of filter screen 9；If braid fabric 9 is placed in the 4th inner chamber, it can not only increase gas and enter air intake duct
Resistance, also the fine oil droplets isolated can be made to be directly entered air inlet pipe 7.Therefore braid fabric 9 is placed in the He of inner chamber dividing plate II 4
Between inner chamber dividing plate III 6, gaseous mixture on the one hand can be made thin by failing to isolate behind first inner chamber and second inner chamber
Small oil droplet is adhered on braid fabric 9 until aggregation of sinking, realizes that oil droplet segments from and mitigates the burden of braid fabric 9；Separately
On the one hand it can prevent smaller oil droplet from bringing the 4th labyrinth chamber into by air-flow and enter air inlet pipe 7, so as to improve whole oil gas point
From the operating efficiency of system, ensure the completeness of Oil-gas Separation, while reduce expiration and intake resistance, improve service life, increase
The reliability for adding respirator to work.
The mouth of pipe of air inlet pipe 7 on the labyrinth chamber base 3 is higher by the about 2mm of labyrinth chamber base 3, it is therefore intended that prevents air-flow will
The fine oil droplets of condensation aggregation in time do not bring the 4th labyrinth chamber into and enter cylinder head air inlet by the mouth of pipe of air inlet pipe 7 on a small quantity
Road, double shield is formed with braid fabric 9, guarantee is eventually returned to inorganic oil in the crankcase waste gas of combustion chamber.
The respirator cover plate 15 is fixed in labyrinth chamber peripheral envelope 5 by six flanged bolts 8, its shape and circumference
Housing 5 is consistent, ensures the uniformity with the structure of valve case inner chamber 1 while saving material, without prejudice to this valve casing component
In the installation and use of body.
The pad of respirator pad 14 is located between labyrinth chamber peripheral envelope 5 and respirator cover plate 15, and is pressed by bolt 8
Tightly, it can be ensured that the gap that the gas in labyrinth chamber will not be between labyrinth chamber peripheral envelope 5 and respirator cover plate 15 is spilt.
The embodiment is preferred embodiment of the invention, but the present invention is not limited to above-mentioned embodiment, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification belongs to protection scope of the present invention.
Claims (7)
- A kind of 1. single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator, it is characterised in that including Valve case inner chamber (1), check valve (12), multistage labyrinth cavity, braid fabric (9), respirator pad (14) and breathing Device cover plate (15)；The multistage labyrinth cavity is cast into integral piece, including labyrinth chamber base (3), labyrinth with the valve case inner chamber (1) Chamber peripheral envelope (5), inner chamber dividing plate I (10), inner chamber dividing plate II (4) and inner chamber dividing plate III (6)；The labyrinth chamber base (3) is same A Shi Zuowei valve cases top cover part is located at one jiao of case, and labyrinth chamber peripheral envelope (5) is cast in labyrinth chamber base (3) On, inner chamber dividing plate I (10), inner chamber dividing plate II (4) and inner chamber dividing plate III (6) are cast on labyrinth chamber base (3) and peripheral envelope (5) inner side；The braid fabric (9) is placed between inner chamber dividing plate II (4) and inner chamber dividing plate III (6)；The respirator cover plate (15) is installed on labyrinth chamber peripheral envelope (5)；Respirator pad (14) pad is located between labyrinth chamber peripheral envelope (5) and respirator cover plate (15).
- A kind of 2. single-cylinder vertical-type diesel engine valve case group of band multistage Oil-gas Separation respirator according to claim 1 Part, it is characterised in that valve case inner chamber (1) internal check valve (12) the upper surface escape pipe (11) extends to labyrinth chamber base (3) on, the mouth of pipe is located at labyrinth chamber base (3) bottom；Air inlet pipe (7) is located at labyrinth chamber base (3) top, and the mouth of pipe is higher by base about 2mm。
- A kind of 3. single-cylinder vertical-type diesel engine valve case group of band multistage Oil-gas Separation respirator according to claim 1 Part, it is characterised in that labyrinth chamber base (3) bottom is provided with spill port (13).
- A kind of 4. single-cylinder vertical-type diesel engine valve case group of band multistage Oil-gas Separation respirator according to claim 3 Part, it is characterised in that gradient α be present in the labyrinth chamber base (3), incline direction by air inlet pipe (7) mouth of pipe tilt down in Escape pipe (11) mouth of pipe, the oil droplet for enabling to isolate flow into spill port along inclined bottom and enter valve case inner chamber.
- A kind of 5. single-cylinder vertical-type diesel engine valve case group of band multistage Oil-gas Separation respirator according to claim 4 Part, it is characterised in that the diameter of the spill port about 1.5mm；The gradient α is at 5 °~10 °.
- A kind of 6. single-cylinder vertical-type diesel engine valve case group of band multistage Oil-gas Separation respirator according to claim 1 Part, it is characterised in that between labyrinth chamber peripheral envelope (5) wall and inner chamber dividing plate I (10), inner chamber dividing plate I (10) and interior Between chamber dividing plate II (4), between inner chamber dividing plate II (4) and inner chamber dividing plate III (6), inner chamber dividing plate III (6) and peripheral envelope (5) are another Between one wall, four labyrinth type inner chambers are respectively constituted from bottom to top, are formed by the gas channel of gas outlet to air inlet, oil gas Mixture makes machine oil separation in the bottom of respirator chamber through this gas channel.
- A kind of 7. single-cylinder vertical-type diesel engine valve case group of band multistage Oil-gas Separation respirator according to claim 1 Part, it is characterised in that respirator cover plate (15) peripheral shape is consistent with labyrinth chamber peripheral envelope (5) shape, by six bands Flange bolt (8) is anchored in labyrinth chamber peripheral envelope (5), the sealing for the device that ensures respiration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720247743.8U CN206668359U (en) | 2017-03-15 | 2017-03-15 | A kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720247743.8U CN206668359U (en) | 2017-03-15 | 2017-03-15 | A kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator |
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| Publication Number | Publication Date |
|---|---|
| CN206668359U true CN206668359U (en) | 2017-11-24 |
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ID=60377145
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720247743.8U Expired - Fee Related CN206668359U (en) | 2017-03-15 | 2017-03-15 | A kind of single-cylinder vertical-type diesel engine valve casing component of band multistage Oil-gas Separation respirator |
Country Status (1)
| Country | Link |
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| CN (1) | CN206668359U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870066A (en) * | 2017-03-15 | 2017-06-20 | 江苏大学 | A kind of single-cylinder vertical-type diesel engine valve casing component with multistage Oil-gas Separation respirator |
-
2017
- 2017-03-15 CN CN201720247743.8U patent/CN206668359U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106870066A (en) * | 2017-03-15 | 2017-06-20 | 江苏大学 | A kind of single-cylinder vertical-type diesel engine valve casing component with multistage Oil-gas Separation respirator |
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