CN202645676U - Engine crank case breathing valve and breathing device - Google Patents
Engine crank case breathing valve and breathing device Download PDFInfo
- Publication number
- CN202645676U CN202645676U CN 201220199008 CN201220199008U CN202645676U CN 202645676 U CN202645676 U CN 202645676U CN 201220199008 CN201220199008 CN 201220199008 CN 201220199008 U CN201220199008 U CN 201220199008U CN 202645676 U CN202645676 U CN 202645676U
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- Prior art keywords
- diaphragm spring
- inhalation valve
- groove
- hole
- respiratory cavity
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- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 29
- 230000000241 respiratory effect Effects 0.000 claims description 42
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000010721 machine oil Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000541 pulsatile effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to an engine crank case breathing valve and a breathing device. The engine crank case breathing valve comprises a diaphragm spring, a diaphragm spring locating sleeve and a diaphragm spring fixed base, the diaphragm spring fixed base comprises a cylindrical large head end and a cylindrical small head end, the small head end serves as an air inlet end, the large head end serves as an air outlet end, a round groove is arranged in the middle of the large head end, a round through hole is arranged in the middle of the small head end, the groove is communicated with the through hole, the diameter of the groove is larger than that of the through hole, the diaphragm spring is arranged at the bottom of the groove of the diaphragm spring fixed base, the diaphragm spring is provided with a head portion which can cover the through hole and a tail portion which can be pressed by the diaphragm spring locating sleeve, the diaphragm spring locating sleeve is arranged in the groove of the diaphragm spring fixed base and can fix the diaphragm spring through pressing the tail portion of the diaphragm spring, the diaphragm spring locating sleeve is in a ring structure, the outer ring surface of the diaphragm spring locating sleeve is closely attached to the wall surface of the groove, the diameter of an inner ring of the diaphragm spring locating sleeve is larger than that of the through hole, and the diaphragm spring locating sleeve can not press the head portion of the diaphragm spring.
Description
Technical field
The utility model relates to the engine manufacturing technology field, more particularly, relates to a kind of motor (such as double cylinder wind cooling formula motor) crankcase respiratory valve and breathing equipment.
Background technique
Owing to can not seal fully between the piston ring of motor and the cylinder, always there is portion gas to enter in the crankcase because of leakage, form back pressure.Therefore, usually at the crankcase bonnet inhalation valve is set, by inhalation valve gas is discharged.But because the bent axle in the crankcase is when High Rotation Speed, certainly will stir the lubricant oil in the crankcase, under centrifugal action, lubricant oil forms mist of oil easily, and forming gas mixture with the back pressure gas in entering crankcase, mist of oil discharges by inhalation valve, both increase consumption of lubricating oil, also polluted environment.
The design of double cylinder wind cooling formula engine crankcase inhalation valve substantially all is to adopt foreign technology at home seldom, and its structural type is general identical with GX-670 double cylinder wind cooling formula engine crankcase inhalation valve.Wherein, double cylinder wind cooling formula engine crankcase inhalation valve is installed in the flange place of the inner chamber cam bearing hole of cylinder body case, this flanged periphery has three sections circular arc boss, and the breathing valve block is placed in one and relies on three fulcrums of limit, camshaft bearing hole lid internal protrusion to carry out spacing; Respiratory cavity is formed jointly by the respiratory cavity bonnet of cylinder body case and the inner chamber of cylinder block shell, respiratory cavity and air-inlet cavity are with a soft pipe connection, wherein respiratory cavity includes the labyrinth channel that is formed by sharp turn, a plurality of right angle and throat, and labyrinth channel can well filter oil droplet.Double cylinder wind cooling formula engine crankcase inhalation valve is the breathing sheet of a circular bakelite thin plate, and it is corresponding with the flange in camshaft bearing hole and keep each other certain gap to breathe sheet.When crankcase produced negative pressure, the breathing sheet moved and is in contact with it the generation seal action to the flange end face in camshaft bearing hole, closes air flue; When breathing the inboard gas integrated pressure of sheet (being comprehensive pressure in the crankcase) greater than breathing sheet outside pressure, it is mobile laterally to breathe sheet, opens air flue.This inhalation valve is to utilize piston to move up and down, and allows the interior air pulsing pressure of crankcase control the switching of inhalation valve.After gas mixture in the crankcase enters respiratory cavity, because the continuous change of the acute variation of sectional area and direction causes the rapid variation of airspeed in the labyrinth channel, because the inertial mass of the mist of oil in the gas mixture is much larger than gas, thus in respiratory cavity in the flow process of reef it in and speed gradually with airflow breakaway, thereby finish Oil-gas Separation, played the effect that reduces the oil content of crankcase Exhaust Gas, can guarantee that isolated machine oil is sucked by it simultaneously when crankcase obtains negative pressure.Meanwhile, utilize the interior air pulsing pressure of crankcase to work by petrol pump, make petrol pump to supplying oil of carburetor.The structural type of this inhalation valve and breathing equipment is simple, is usually used in double cylinder IC engine.But the inhalation valve of this kind form and the breathing equipment life-span in real work is shorter, and oil gas separation is undesirable, and consumption of lubricating oil is many, and it is unreliable to use, to performance and the environment generation harmful effect of motor.
Therefore, need engine crankcase inhalation valve and the breathing equipment of a kind of reliability height of design, long service life badly, to guarantee the normal operation of motor.
The model utility content
The problems such as for the deficiencies in the prior art, the purpose of this utility model is to provide a kind of new engine crankcase inhalation valve, and the inhalation valve reliability is not high to solve, working life is short.Another purpose of the present utility model is to provide a kind of engine crankcase breathing equipment, by using above-mentioned breathing equipment, has effectively reduced the oil content in the Exhaust Gas and has guaranteed the normal stable operation of motor.
To achieve these goals, one side of the present utility model provides a kind of engine crankcase inhalation valve, described engine crankcase inhalation valve comprises diaphragm spring, diaphragm spring setting sleeve and diaphragm spring fixed base, wherein, the diaphragm spring fixed base comprises cylindrical stub end and cylindrical little head end, little head end is that inlet end and stub end are the outlet side, the middle part of stub end has circular groove, the middle part of little head end has circular through hole, groove is communicated with through hole, and the diameter of groove is greater than the diameter of through hole; Diaphragm spring places the bottom of the groove of diaphragm spring fixed base, the afterbody that diaphragm spring has the head that can cover through hole and can be pushed down by the diaphragm spring setting sleeve; The diaphragm spring setting sleeve places fixedly diaphragm spring of the groove of diaphragm spring fixed base and the afterbody by pushing down diaphragm spring, the diaphragm spring setting sleeve is circle structure, the outer ring surface of diaphragm spring setting sleeve is close to the wall of groove, the diameter of the interior ring of diaphragm spring setting sleeve is greater than the diameter of through hole, and the diaphragm spring setting sleeve is not pushed down the head of diaphragm spring.
According to an embodiment of engine crankcase inhalation valve of the present utility model, the material of described diaphragm spring is 50CrVA.
Of the present utility modelly provide on the other hand a kind of engine crankcase breathing equipment, described engine crankcase breathing equipment comprises inhalation valve and respiratory cavity, wherein, respiratory cavity is formed jointly by the respiratory cavity bonnet of cylinder body case and the inner chamber of cylinder block shell, also is provided with the camshaft bearing hole in the inner chamber of cylinder block shell; Inhalation valve is installed in the camshaft bearing hole by the little head end of inhalation valve, and inhalation valve has the structure of aforementioned engine crankcase inhalation valve; Respiratory cavity is communicated with the stub end of inhalation valve, respiratory cavity comprises that also labyrinth channel and the labyrinth channel for the filtration oil droplet is arranged at respiratory cavity and respiratory cavity bonnet, respiratory cavity is communicated with air-inlet cavity by pipeline, and the bottom of respiratory cavity is provided with the aperture that is communicated with crankcase.
An embodiment according to engine crankcase breathing equipment of the present utility model also is provided with the Stainless Steel Wire filter screen in the described respiratory cavity.
The utility model compared with prior art, its functional reliability is compared all with former inhalation valve with working life and is greatly enhanced, thereby has guaranteed the engine work performance.
Description of drawings
Fig. 1 is that the master of the engine crankcase inhalation valve of the utility model exemplary embodiment looks cross-sectional schematic.
Fig. 2 is the schematic top plan view of the engine crankcase inhalation valve of the utility model exemplary embodiment.
Fig. 3 is the schematic top plan view of diaphragm spring of the engine crankcase inhalation valve of the utility model exemplary embodiment.
Fig. 4 is that the master of diaphragm spring setting sleeve of the engine crankcase inhalation valve of the utility model exemplary embodiment looks cross-sectional schematic.
Fig. 5 is that the master of diaphragm spring fixed base of the engine crankcase inhalation valve of the utility model exemplary embodiment looks cross-sectional schematic.
Description of reference numerals:
1-diaphragm spring, 2-diaphragm spring setting sleeve, 3-diaphragm spring fixed base, 4-groove, 5-through hole.
Embodiment
Hereinafter, describe the engine crankcase inhalation valve of the utility model exemplary embodiment in detail in connection with accompanying drawing.
Fig. 1 is that the master of the engine crankcase inhalation valve of the utility model exemplary embodiment looks cross-sectional schematic, and Fig. 2 is the schematic top plan view of the engine crankcase inhalation valve of the utility model exemplary embodiment.As depicted in figs. 1 and 2, the engine crankcase inhalation valve according to present embodiment comprises diaphragm spring 1, diaphragm spring setting sleeve 2 and diaphragm spring fixed base 3.
Fig. 3 is the schematic top plan view of diaphragm spring of the engine crankcase inhalation valve of the utility model exemplary embodiment, Fig. 4 is that the master of diaphragm spring setting sleeve of the engine crankcase inhalation valve of the utility model exemplary embodiment looks cross-sectional schematic, and Fig. 5 is that the master of diaphragm spring fixed base of the engine crankcase inhalation valve of the utility model exemplary embodiment looks cross-sectional schematic.As shown in Figure 5, the diaphragm spring fixed base 3 of present embodiment comprises cylindrical stub end and cylindrical little head end, little head end is that inlet end and stub end are the outlet side, the middle part of stub end has circular groove 4, the middle part of little head end has circular through hole 5, groove 4 is communicated with through hole 5, and the diameter of groove 4 is greater than the diameter of through hole 5.Diaphragm spring fixed base 3 is used for placing diaphragm spring 1, plays support plinth.Wherein, groove 4 is used for carrier film flat spring 1 and diaphragm spring setting sleeve 2, and the size of groove 4 needs to adapt with the size of this two member.Through hole 5 is as the passage of gas mixture, and the rate requirement that its size only need satisfy exhaust gets final product.
As shown in Figure 3, diaphragm spring 1 places the bottom of the groove 4 of diaphragm spring fixed base 3, the afterbody that diaphragm spring 1 has the head that can cover through hole 5 and can be pushed down by diaphragm spring setting sleeve 2.Diaphragm spring 1 is equivalent to the spool of inhalation valve, and diaphragm spring 1 is opened and namely opened inhalation valve, and diaphragm spring 1 closure is namely closed inhalation valve.In the present embodiment, diaphragm spring 1 has structure as shown in Figure 3, and namely the head of diaphragm spring has the first circular arc, and the radius of curvature of the first circular arc is slightly larger than the radius of through hole 5, and then the head of diaphragm spring can cover whole through hole 5; The afterbody of diaphragm spring has the second circular arc, and the radius of curvature of the second circular arc can equal the radius of the groove 4 of diaphragm spring fixed base 3, is convenient to like this arrange and fixing diaphragm spring 1; The two ends of the first circular arc are connected by straight line with the two ends of the second circular arc, so that processing and moulding, but the structure of diaphragm spring 1 is not limited to this.Wherein, diaphragm spring 1 need have good rebound elasticity and sealing, and the material of diaphragm spring 1 is preferably 50CrVA.
As shown in Figure 4, diaphragm spring setting sleeve 2 places fixedly diaphragm spring 1 of the groove 4 of diaphragm spring fixed base 3 and the afterbody by pushing down diaphragm spring 1, diaphragm spring setting sleeve 2 is circle structure, the wall that the outer ring surface of diaphragm spring setting sleeve 2 is close to groove 4 is with the steadiness of the valve that ensures respiration and prevent diaphragm spring 1 dystopy, the head that the diameter of the interior ring of diaphragm spring setting sleeve 2 is not pushed down diaphragm spring 1 greater than diameter and the diaphragm spring setting sleeve 2 of through hole 5, can guarantee that like this diaphragm spring setting sleeve 2 can not affect the open and close of diaphragm spring 1, also can not affect flowing of gas mixture.
The size of inhalation valve of the present utility model can be installed as required the position of inhalation valve and specifically be set.For example, in the exemplary embodiment, the diameter of the stub end of diaphragm spring fixed base 3 is that the height of 31mm and stub end is 7mm, the diameter of little head end is that the height of 24mm and little head end is 4mm, the height of diaphragm spring fixed base 3 is 11mm, the diameter of groove 4 is that the degree of depth of 24mm and groove 4 is 5mm, and the diameter of through hole 5 is that the length of 10mm and through hole 5 is 6mm.The radius of curvature of the first circular arc of diaphragm spring 1 is 12mm, and the radius of curvature of the second circular arc of diaphragm spring 1 is 24mm.The outer ring diameter of diaphragm spring setting sleeve 2 is 24mm, and interior ring diameter is 19mm.
During installation, diaphragm spring 1 is put into the groove 4 of diaphragm spring fixed base 3, the position of adjusting diaphragm spring 1 makes it cover through hole 5; Then, the groove 4 that diaphragm spring setting sleeve 2 is pressed into diaphragm spring fixed base 3 is interior and diaphragm spring 1 is fixing, forms one-way breather valve; At last, this inhalation valve is pressed in the camshaft bearing hole of engine cylinder shell inner cavity to the appropriate location, inhalation valve installs again.After the utility model adopts the diaphragm spring assembly, rely on the elastic force of diaphragm spring self can realize well closing, fast response time, good sealing effect when closing substantially do not have wearing and tearing during diaphragm spring work, so reliability is strong, and the life-span is long.And during the work of former inhalation valve, valve block can ceaselessly move forward and backward, and the valve block both ends of the surface also constantly produce bump with sealing surface and spacing salient point and wear and tear, so reliability and life-span are not so good as the utility model.
In order to utilize above-mentioned engine crankcase inhalation valve, the invention also discloses a kind of engine crankcase breathing equipment.The engine crankcase breathing equipment of the utility model exemplary embodiment comprises inhalation valve and respiratory cavity.Respiratory cavity is formed jointly by the respiratory cavity bonnet of cylinder body case and the inner chamber of cylinder block shell, also is provided with the camshaft bearing hole in the inner chamber of cylinder block shell; Inhalation valve is installed in the camshaft bearing hole by the little head end of inhalation valve, and inhalation valve has said structure; Respiratory cavity is communicated with the stub end of inhalation valve, respiratory cavity comprises that also labyrinth channel and the labyrinth channel for the filtration oil droplet is arranged at respiratory cavity and respiratory cavity bonnet, respiratory cavity is communicated with air-inlet cavity by pipeline, and the bottom of respiratory cavity is provided with the aperture that is communicated with crankcase.The structure of respiratory cavity and labyrinth channel is prior art, and therefore not to repeat here.
When the engine crankcase breathing equipment of the utility model exemplary embodiment is implemented, when engine piston moves downward, pressure in the crankcase increases, when pressure greater than inhalation valve in during the elastic force of diaphragm spring 1, diaphragm spring 1 is opened, gas mixture in the crankcase enters in the respiratory cavity and carry out Oil-gas Separation in labyrinth channel, the pipeline that gas after separating links to each other with air-inlet cavity through respiratory cavity and enter air-inlet cavity, isolated machine oil then flows into the bottom of labyrinth channel and gathers together.When engine piston moves upward, pressure in the crankcase reduces gradually, the diaphragm spring 1 of inhalation valve is in closed condition, just form negative pressure when the pressure in the crankcase is lower than external pressure, the machine oil that rest on the labyrinth channel bottom this moment just is inhaled in the crankcase from the aperture of respiratory cavity bottom.Meanwhile, petrol pump is also exhaled one and is finished pump oil process in the suction and Carburetor is carried out fuel feeding, finishes a work cycle, so moves in circles.
Inhalation valve of the present utility model has two effects, when engine work, along with moving up and down of piston, the pressure of crankcase presents periodic pulsatile change under the control of inhalation valve, make on the one hand the pressure in the crankcase keep normal pulsation, allow the oil gas that overflows in the crankcase separate in respiratory cavity, isolated machine oil and gas enter respectively crankcase and air-inlet cavity again; And utilize on the other hand this fluctuation pressure allow petrol pump work, and realize normal fuel injection, guarantee the normal operation of motor.
Preferably, can in respiratory cavity, increase the Stainless Steel Wire filter screen, to promote the further separation of oil gas.
In sum, the functional reliability of engine crankcase inhalation valve of the present utility model and breathing equipment is compared all with former inhalation valve with working life and is greatly enhanced, thereby has guaranteed the engine work performance.
Although the above has described engine crankcase inhalation valve of the present utility model and breathing equipment in conjunction with exemplary embodiment, but those of ordinary skills should be clear, in the situation that does not break away from the spirit and scope that claim limits, can adjust or revise above-mentioned exemplary embodiment.
Claims (4)
1. an engine crankcase inhalation valve is characterized in that, described engine crankcase inhalation valve comprises diaphragm spring, diaphragm spring setting sleeve and diaphragm spring fixed base, wherein,
The diaphragm spring fixed base comprises cylindrical stub end and cylindrical little head end, little head end is that inlet end and stub end are the outlet side, and the middle part of stub end has circular groove, and the middle part of little head end has circular through hole, groove is communicated with through hole, and the diameter of groove is greater than the diameter of through hole;
Diaphragm spring places the bottom of the groove of diaphragm spring fixed base, the afterbody that diaphragm spring has the head that can cover through hole and can be pushed down by the diaphragm spring setting sleeve;
The diaphragm spring setting sleeve places fixedly diaphragm spring of the groove of diaphragm spring fixed base and the afterbody by pushing down diaphragm spring, the diaphragm spring setting sleeve is circle structure, the outer ring surface of diaphragm spring setting sleeve is close to the wall of groove, the diameter of the interior ring of diaphragm spring setting sleeve is greater than the diameter of through hole, and the diaphragm spring setting sleeve is not pushed down the head of diaphragm spring.
2. engine crankcase inhalation valve according to claim 1 is characterized in that, the material of described diaphragm spring is 50CrVA.
3. an engine crankcase breathing equipment is characterized in that, described engine crankcase breathing equipment comprises inhalation valve and respiratory cavity, wherein,
Respiratory cavity is formed jointly by the respiratory cavity bonnet of cylinder body case and the inner chamber of cylinder block shell, also is provided with the camshaft bearing hole in the inner chamber of cylinder block shell;
Inhalation valve is installed in the camshaft bearing hole by the little head end of inhalation valve, and inhalation valve has structure as claimed in claim 1 or 2;
Respiratory cavity is communicated with the stub end of inhalation valve, respiratory cavity comprises that also labyrinth channel and the labyrinth channel for the filtration oil droplet is arranged at respiratory cavity and respiratory cavity bonnet, respiratory cavity is communicated with air-inlet cavity by pipeline, and the bottom of respiratory cavity is provided with the aperture that is communicated with crankcase.
4. engine crankcase breathing equipment according to claim 3 is characterized in that, also is provided with the Stainless Steel Wire filter screen in the described respiratory cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220199008 CN202645676U (en) | 2012-05-04 | 2012-05-04 | Engine crank case breathing valve and breathing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220199008 CN202645676U (en) | 2012-05-04 | 2012-05-04 | Engine crank case breathing valve and breathing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202645676U true CN202645676U (en) | 2013-01-02 |
Family
ID=47414795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220199008 Expired - Fee Related CN202645676U (en) | 2012-05-04 | 2012-05-04 | Engine crank case breathing valve and breathing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202645676U (en) |
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2012
- 2012-05-04 CN CN 201220199008 patent/CN202645676U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180207 Address after: 072751 Zhuozhou, Baoding, Fan Yang Road West, No. 189 Patentee after: BGP INC., CHINA NATIONAL PETROLEUM Corp. Address before: 610213 No. 1, No. 1, No. 1, Huayang Avenue, Huayang Town, Shuangliu County, Chengdu, Sichuan Patentee before: GEOPHYSICAL EXPLORATION COMPANY OF CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20190504 |