CN205089400U - Automatically cleaning formula spiral chamber is towards sodium valve - Google Patents
Automatically cleaning formula spiral chamber is towards sodium valve Download PDFInfo
- Publication number
- CN205089400U CN205089400U CN201520856722.7U CN201520856722U CN205089400U CN 205089400 U CN205089400 U CN 205089400U CN 201520856722 U CN201520856722 U CN 201520856722U CN 205089400 U CN205089400 U CN 205089400U
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- Prior art keywords
- valve
- sodium
- self
- rushes
- helical cavity
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses an automatically cleaning formula spiral chamber is towards sodium valve, the valve head lateral wall is equipped with around its axially extended helical blade, the inside spiral runner that is equipped with of valve stem, it has sodium to dash in the spiral flowing channel, the valve stem surface is equipped with chromium -plated layer, the valve head is equipped with the annular along its circumference, the annular interlap has overlay and overlay surface for the circular conical surface, and what this automatically cleaning formula spiral chamber is towards sodium valve can be better walks valve neck and the heat conduction that valve head end face centre located to gather to it is even to make the valve heat dissipation.
Description
Technical field
The utility model relates to engine component field, and specifically a kind of self-cleaning helical cavity rushes sodium valve.
Background technique
Gasoline engine exhaust door in the past adopts solid exhaust valve, and exhaust valve head adopts resistant to elevated temperatures austenite material, and bar portion adopts martensitic material, then forms through processes such as welding, surface treatments.The exhaust valve of this structure, technique only can be used in delivery temperature and is no more than on the natural aspiration petrol engine of 750 DEG C.In supercharged engine, owing to employing compress inlet air technology (specifically having turbosupercharging, engine driven supercharging and two supercharging), make the burning pressure of explosion in cylinder than high during natural aspiration, the temperature in cylinder is also than high during natural aspiration, thus the temperature of exhaust valve raises accordingly.The temperature of Gu Paiqimenchu often exceeds the allowable temperature of material for exhaust valves, thus reduces exhaust valve working life, reduces heat dispersion.In order to address this problem, people are at engine valve stem boring formation one cavity of exhaust valve, the fusing point of sodium metal is 97.81 DEG C, under the prerequisite of rational hollow cavity volume, when valve works, temperature raises very fast, sodium metal becomes liquid state when high temperature from solid-state, move up and down in hollow cavity and constantly wash away valve face and valve stem, the heat load of valve face end is effectively delivered to valve stem, then by the water channel coolant exhaust door of cylinder cap, improve the thermal diffusivity of exhaust valve, the heat load of effective reduction valve face, in addition, the proportion of sodium metal is less, the total quality of valve diminishes, and the rigidity grow of valve, under equal conditions, the amount of deformation of valve is little, but the exhaust valve that existing hollow fills sodium structure has a problem: the heat of air valve cervix and valve end surface center is not easy to be conducted away smoothly, be the position that temperature is assembled, the heat dissipation uniformity of exhaust valve can be affected, reduce the exhaust valve life-span.
Therefore, for overcoming the above problems, need a kind of can being walked by the heat conduction that air valve cervix and valve end surface center gather preferably, thus make head portion that uniform self-cleaning helical cavity of dispelling the heat rush sodium valve.
Model utility content
In view of this, the purpose of this utility model overcomes defect of the prior art, and providing a kind of can walk the heat conduction that air valve cervix and valve end surface center gather preferably, thus make exhaust valve uniform self-cleaning helical cavity of dispelling the heat rush sodium valve.
Self-cleaning helical cavity of the present utility model rushes sodium valve, comprise valve head and valve stem, described valve head outer side wall is provided with around its axially extended helical blade, valve stem inside is provided with helical flow path, in helical flow path, punching has sodium, valve stem surface is provided with chromium coating, and valve head is circumferentially with annular groove along it, is coated with overlay cladding and overlay surface is conical surface in annular groove;
Further, the surface of contact of described annular groove and overlay cladding is arc surface;
Further, described valve head bottom surface is provided with the circular groove coaxial with valve head;
Further, the length of rushing the valve guide bushing that sodium valve coordinates with this self-cleaning helical cavity is S
1, it is S that this self-cleaning helical cavity rushes sodium valve relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem plated surface layers of chrome is S
1+ S
2;
Further, described valve stem is circumferentially provided with annular groove and groover rot diameter is less than valve collet internal diameter on the cylndrical surface on its top.
The beneficial effects of the utility model are: self-cleaning helical cavity of the present utility model rushes sodium valve, helical blade on valve head drives valve rotation by the airflow scouring helical blade of discharging, both the circulation of gas can have been improved, turn increase the rigidity of valve, the more important thing is the carbon distribution reducing valve and valve seat, thus ensure the sealing that valve is good and longer life-span, helical flow path is conducive to the helical flow of guide wire sodium, compare the existing cylindrical valve rushing sodium chamber, the circulation path of helical flow path of the present utility model is longer, the exchange heat speed of sodium metal in cavity and valve head can be strengthened, on the other hand, after arranging and rushing sodium chamber, the structural strength of valve stem will reduce, and the chromium coating on valve stem surface can make up the mechanical strength of valve stem, improves its heat resistance simultaneously, in addition, the overlay cladding that valve head circumference is arranged, this overlay cladding matches with air valve seat ring, effectively can improve the wearing and tearing of valve head.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the structural representation of helical blade of the present utility model.
Embodiment
Fig. 1 is structural representation of the present utility model, Fig. 2 is the partial enlarged drawing at A place in Fig. 1, as shown in the figure, the self-cleaning helical cavity in the present embodiment rushes sodium valve, comprises valve head 3 and valve stem 5, described valve head 3 outer side wall is provided with around its axially extended helical blade 4, valve stem 5 inside is provided with helical flow path 9, and in helical flow path 9, punching has sodium, and valve stem 5 surface is provided with chromium coating 6, valve head 3 is circumferentially with annular groove 8 along it, be coated with overlay cladding 2 in annular groove 8 and overlay cladding 2 surface for conical surface; Helical flow path 9 in valve stem 5 can guide liquid metal sodium helical flow, compare the valve that existing employing circular cylindrical cavity carries out rushing sodium, the helical flow path 9 of this structural type of the utility model can extend the circulation length of runner, can strengthen the exchange heat speed of sodium metal in cavity and valve head 3; In addition, the overlay cladding 2 that valve head 3 circumference is arranged, this overlay cladding 2 matches with air valve seat ring, effectively can improve the wearing and tearing of valve head 3, and the chromium coating 6 on valve stem 5 surface can improve mechanical strength and the heat resistance of valve.
In the present embodiment, described annular groove 8 is arc surface 11 with the surface of contact of overlay cladding 2, and this arc surface 11 can increase overlay cladding 2 and the area of contact of valve head 3, ensures that overlay cladding 2 is firmly connected with valve head 3.
In the present embodiment, described valve head 3 bottom surface is provided with the circular groove 1 coaxial with valve head 3, and this circular groove 1, as a part for engine chamber, can adjust the compression ratio of motor in certain limit by the size adjusting circular groove 1.
In the present embodiment, the length of rushing the valve guide bushing that sodium valve coordinates with this self-cleaning helical cavity is S
1, it is S that this self-cleaning helical cavity rushes sodium valve relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem 5 plated surface layers of chrome is S
1+ S
2as shown in Figure 1, dot-dash wire frame region is chromium coating 6, chromium coating 6, for being slidably matched with valve guide bushing, to reduce wearing and tearing, is the utilization ratio of raising chromium coating 6, cost-saving, the axial length of the chromium coating 6 that the present embodiment adopts is length and the valve stroke sum of valve guide bushing, ensures that valve stem 5 is all coated with chromium coating 6 with the surface of contact of valve guide bushing in reciprocating process, thus strengthens its wear resistance.
In the present embodiment, described valve stem 5 is circumferentially provided with rod slot 7 on the cylndrical surface on its top and rod slot 7 end diameter is less than valve collet internal diameter, ensures that valve stem 5 is connected with valve reliable lock.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. self-cleaning helical cavity rushes a sodium valve, comprises valve head and valve stem, it is characterized in that: described valve head outer side wall is provided with around its axially extended helical blade, and described valve stem inside is provided with spiral flow channel, and in described helical flow path, punching has sodium; Described valve stem surface is provided with chromium coating; Described valve head is circumferentially with annular groove along it; Overlay cladding is coated with and overlay surface is conical surface in described annular groove.
2. self-cleaning helical cavity according to claim 1 rushes sodium valve, it is characterized in that: the surface of contact of described annular groove and overlay cladding is arc surface.
3. self-cleaning helical cavity according to claim 2 rushes sodium valve, it is characterized in that: described valve head bottom surface is provided with the circular groove coaxial with valve head.
4. self-cleaning helical cavity according to claim 3 rushes sodium valve, it is characterized in that: the length of rushing the valve guide bushing that sodium valve coordinates with this self-cleaning helical cavity is S
1, it is S that this self-cleaning helical cavity rushes sodium valve relative to the stroke that valve guide bushing moves
2, the axial length of described valve stem plated surface layers of chrome is S
1+ S
2.
5. self-cleaning helical cavity according to claim 4 rushes sodium valve, it is characterized in that: described valve stem is circumferentially provided with rod slot on the cylndrical surface on its top and rod slot diameter is less than valve collet internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520856722.7U CN205089400U (en) | 2015-10-30 | 2015-10-30 | Automatically cleaning formula spiral chamber is towards sodium valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520856722.7U CN205089400U (en) | 2015-10-30 | 2015-10-30 | Automatically cleaning formula spiral chamber is towards sodium valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205089400U true CN205089400U (en) | 2016-03-16 |
Family
ID=55480096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520856722.7U Expired - Fee Related CN205089400U (en) | 2015-10-30 | 2015-10-30 | Automatically cleaning formula spiral chamber is towards sodium valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205089400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240077A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Air valve with screw cavity charged with sodium and with screw blade |
-
2015
- 2015-10-30 CN CN201520856722.7U patent/CN205089400U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240077A (en) * | 2015-10-30 | 2016-01-13 | 重庆奇甫机械有限责任公司 | Air valve with screw cavity charged with sodium and with screw blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20160316 Termination date: 20161030 |