CN201531587U - Vent cap special for high-speed gearbox - Google Patents
Vent cap special for high-speed gearbox Download PDFInfo
- Publication number
- CN201531587U CN201531587U CN2009201783713U CN200920178371U CN201531587U CN 201531587 U CN201531587 U CN 201531587U CN 2009201783713 U CN2009201783713 U CN 2009201783713U CN 200920178371 U CN200920178371 U CN 200920178371U CN 201531587 U CN201531587 U CN 201531587U
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- CN
- China
- Prior art keywords
- oil
- base
- upper cover
- cap
- oil separator
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- Expired - Lifetime
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Abstract
The utility model relates to a vent cap special for a high-speed gearbox, which is characterized in that a base is sequentially integrally welded to a case and an upper cover; the upper cover is fastened to an upper cover seat through a bolt; a vent cap is welded to the top of the upper cover; a gas-oil separator installed in the center of an inner cavity of the case is tightly pressed on the base through a bolt and a cap; an O-shaped seal ring is mounted on the contact surface of the gas-oil separator and the base; an oil return pipe is disposed in the center of the lower portion of the base; a cylindrical cavity is arranged between the case and the gas-oil separator; and the cylindrical cavity is communicated with the oil return pipe. The vent cap special for a high-speed gearbox has the functions of ventilation and heat removal, and can effectively prevent oil mist mixed in gas flow from being emitted into the atmosphere. Besides, high-temperature gas flow is directly emitted into the atmosphere without passing through an oil tank, accordingly the gas flow can not cause oil temperature and oil air void inside the oil tank to increase additionally, each performance index of lubricating oil is guaranteed, and potential hazards of the prior art are avoided.
Description
Technical field
The utility model relates to a kind of special ventilation cap for high-speed gear box, specifically be exclusively used in have ventilative, heat extraction on the high-speed gear box, the mechanical device of oil resistance effect, belong to the mechanical structure technical field.
Background technique
In prior art, the gear of high-speed gear box and tilting-pad bearing place generally adopt the lubricating system of pressure oil forced jet, because rotating speed very high (high speed shaft can reach 2～30,000 rev/mins), temperature in the gear-box is very high and air pressure is uneven, discharge outside the case if use general ventilative cap that the interior mist of oil of gear-box is mixed in the air-flow, cause environmental pollution.MANUFACTURER is led to gear-box and fuel tank one termination for balance gear case air pressure mostly at present, and at the ventilative cap of fuel tank the other end dress.Such method seems mist of oil and seldom discharges, and in fact it made the oily temperature rise of fuel tank, and makes the air-flow of gear-box be easy to be entrained in the lubricant oil of fuel tank, has reduced the performance of oil product, and gear and tilting-pad bearing have been caused potential threat; Simultaneously, oily temperature is maintained in the temperature of setting, must increase the capacity and the power of oil cooler, raise the cost.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby a kind of special ventilation cap for high-speed gear box is provided, and it not only has effect ventilative, heat extraction, can also effectively stop the excessive of mist of oil, realizes separating of air and mist of oil.
According to the technological scheme that the utility model provides, special ventilation cap for high-speed gear box comprises ventilative cap, and feature is: base and overcoat and upper cover base are integrally welded successively, and on upper cover base, ventilative cap is welded on tops to loam cake by bolton; Oil separator is equipped with in overcoat inner chamber central authorities, and is pressed on the base by double-screw bolt and nut, on the surface of contact of oil separator and base O-ring seals is installed; The bottom center of base is equipped with return tube.One cylindrical cavity is arranged between described overcoat and the oil separator, and this cylindrical cavity is upwards connected by ventilative cap and atmosphere, and downward and return tube is connected; Base intracavity communicates with the inner chamber of oil separator.
Compared with the prior art the utility model has the following advantages:
The function of the air permeable and heat exhausting of the existing general ventilative cap of the utility model, can effectively stop the mist of oil that is mixed in the air-flow to enter atmosphere again, because high temperature gas flow directly enters atmosphere and without fuel tank, so it can not cause the extra rising of oily gentle oil product gas content in the fuel tank, guarantee every performance index of lubricant oil, got rid of the potential risk in the prior art.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
As shown in Figure 1: the utility model comprises base 1, overcoat 2, upper cover base 3, loam cake 4, bolt 5, ventilative cap 6, oil separator 7, nut 8, double-screw bolt 9, O-ring seals 10, return tube 11 etc.
The utility model adopts base 1 integrally welded successively with overcoat 2 and upper cover base 3, and loam cake 4 is fastened on the upper cover base 3 by bolt 5, and ventilative cap 6 is welded on loam cake 4 tops; Oil separator 7 is equipped with in overcoat 2 inner chamber central authorities, and is pressed on the base 1 by double-screw bolt 9 and nut 8, on the surface of contact of oil separator 7 and base 1 O-ring seals 10 is installed; The bottom center of base 1 is equipped with return tube 11.One cylindrical cavity 12 is arranged between described overcoat 2 and the oil separator 7, and this cylindrical cavity 12 makes progress and connects by ventilative cap 6 and atmosphere, and downward and return tube 11 is connected; Base 1 inner chamber communicates with the inner chamber of oil separator 7.
Working principle of the present utility model and process are as follows:
As shown in Figure 1, the utility model vertically is fastened on by fastening piece on the boss plane of high gear box top, and return tube 11 passes gear-box and inserts fuel tank.Under applying working condition, the high temperature gas flow that accompanies mist of oil in the gear-box enters in the inner chamber of the oil separator 7 that communicates with it along the inner chamber of diagram arrow A direction through base 1, because the ventilative effect of the oil resistance of the filter screen in the oil separator 7, make oil molecule can only not return in the gear-box by filter screen, air stream then can enter in the cylindrical cavity 12 of oil separator outer wall and the formation of overcoat 2 inwalls by filter screen smoothly, flowing through to enter in the atmosphere along the arrow B direction with ventilative cap 6 inner chambers of its perforation (has several to connect the through hole of atmosphere on the ventilative cap 6) again, thereby realizes the purpose of air permeable and heat exhausting and oil resistance.In whole process, because the motional inertia of molecule and the stream pressure in the gear-box, can make seldom a part of oil molecule be adsorbed on the filter screen even penetrate filter screen and enter in the cavity 12, molecular motion energy through infiltration significantly reduces, oil molecule is difficult to enter in the atmosphere with air, the oil molecule of this moment all can be adsorbed on the inside and outside wall of cavity 12 usually, when accumulating to a certain degree Deng the oil molecule that adsorbs, because the effect of gravity, can splash into cavity bottom and also flow in the direction of arrow C in the return tube 11, enter then (return tube 11 is connected with fuel tank) in the fuel tank.Owing to " penetrating oil " that return fuel tank is few, in the oil product life cycle, can not influence the performance index of oil product.
The utility model uses on the step-up gear of high-speed centrifugal fan, and from actual use condition, it is ventilative, the stable effect of heat extraction, oil resistance is reliable, meets environmental requirement fully.
Claims (4)
1. special ventilation cap for high-speed gear box, comprise ventilative cap (6), it is characterized in that: base (1) is integrally welded successively with overcoat (2) and upper cover base (3), and loam cake (4) is fastened on the upper cover base (3) by bolt (5), and ventilative cap (6) is welded on loam cake (4) top; Described overcoat (2) inner chamber is equipped with oil separator (7), and is pressed on the base (1) by double-screw bolt (9) and nut (8), on the surface of contact of described oil separator (7) and base (1) O-ring seals (10) is installed; The below of described base (1) installs back oil pipe (11), between described overcoat (2) and the oil separator (7) cylindrical cavity (12) is arranged.
2. special ventilation cap for high-speed gear box according to claim 1 is characterized in that described cylindrical cavity (12) and return tube (11) connection.
3. special ventilation cap for high-speed gear box according to claim 1 is characterized in that described base (1) inner chamber communicates with oil separator (7) inner chamber.
4. special ventilation cap for high-speed gear box according to claim 1 is characterized in that having several through holes on the described ventilative cap (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201783713U CN201531587U (en) | 2009-11-20 | 2009-11-20 | Vent cap special for high-speed gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201783713U CN201531587U (en) | 2009-11-20 | 2009-11-20 | Vent cap special for high-speed gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531587U true CN201531587U (en) | 2010-07-21 |
Family
ID=42526991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201783713U Expired - Lifetime CN201531587U (en) | 2009-11-20 | 2009-11-20 | Vent cap special for high-speed gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798351A (en) * | 2019-03-26 | 2019-05-24 | 重庆齿轮箱有限责任公司 | A kind of gear-box ventilation device |
-
2009
- 2009-11-20 CN CN2009201783713U patent/CN201531587U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798351A (en) * | 2019-03-26 | 2019-05-24 | 重庆齿轮箱有限责任公司 | A kind of gear-box ventilation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100721 Effective date of abandoning: 20091120 |