DE2758120A1 - Rotary vacuum pump with oil sealed outlet valve above oil level - feeds excess oil from oil circulation pump into oil seal of valve - Google Patents
Rotary vacuum pump with oil sealed outlet valve above oil level - feeds excess oil from oil circulation pump into oil seal of valveInfo
- Publication number
- DE2758120A1 DE2758120A1 DE19772758120 DE2758120A DE2758120A1 DE 2758120 A1 DE2758120 A1 DE 2758120A1 DE 19772758120 DE19772758120 DE 19772758120 DE 2758120 A DE2758120 A DE 2758120A DE 2758120 A1 DE2758120 A1 DE 2758120A1
- Authority
- DE
- Germany
- Prior art keywords
- oil
- pump
- valve
- vacuum pump
- outlet valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/02—Liquid sealing for high-vacuum pumps or for compressors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Ölführunq in einer DrehschiebervakuumpumpeOil supply in a rotary vane vacuum pump
Die Erfindung bezieht sich auf die Ölführung in Drehschiebervakuumpumpen mit von Ö1 überlagertem Auspuffventil.The invention relates to the oil supply in rotary vane vacuum pumps with exhaust valve overlaid by oil.
In Drehschiebervakuumpumpen befindet sich das Auspuffventil in den meisten Fällen unterhalb des Ölspiegels im Pumpengehäuse, und der Ölzufluß bzw. Ölabfluß von diesem Ventil wird durch geeignete konstruktive Maßnahmen ermöglicht.In rotary vane vacuum pumps, the exhaust valve is located in the in most cases below the oil level in the pump housing, and the oil inflow or Oil drainage from this valve is made possible by suitable structural measures.
Es gibt aber auch Pumpen, bei denen sich das Auspuffventil in einem Schacht befindet oder von einem Kragen umgeben ist. Wenn es unterhalb des Ölspiegels liegt, sorgen seitliche Bohrungen in dem Schacht für die entsprechende Ölzirkulation. benn in solchen Pumpen das Ventil oberhalb des Ölspiegels angebracht ist, erfolgt die Ölversorgung durch das Öl, welches mit dem ausgestoßenen Gas durch das Auspuffventil ausgestoßen uird. Der Raum im Schacht wird mit Ö1 gefüllt, es überdeckt das Ventil, und das überflüssige Öl fließt über die Oberkante des Schachtes in den Ölvorratsraum der Pumpe ab. Bei solchen Pumpen kann es passieren, daß der Schacht durch das ausgestoßene Gas freigeblasen wird, das Ventil dann nicht mehr ölüberdeckt ist und dadurch undicht wird. Dies geschieht insbesondere dann, wenn die Pumpe bei relativ hohem Ansaugdruck betrieben wird.But there are also pumps in which the exhaust valve is in one Shaft is located or is surrounded by a collar. If it's below the oil level lateral holes in the shaft ensure the appropriate oil circulation. benn in such pumps the valve is mounted above the oil level, takes place the oil supply by the oil, which with the expelled gas through the exhaust valve expelled. The space in the shaft is filled with Ö1, it covers the valve, and the excess oil flows over the upper edge of the shaft into the oil reservoir the pump. With such pumps it can happen that the shaft through the ejected Gas is blown free, the valve is then no longer covered with oil and therefore leaks will. This happens especially when the pump is operating at a relatively high suction pressure is operated.
Die Erfindung stellt sich die Aufgabe, in Drehschiebervakuumpumpen mit ölüberlagertem Auspuffventil und Ölzuangsumlauf, bei der das von einem Schacht oder einem Kragen umgebene Auslaßventil sich oberhalb des Ölspiegels befindet, eine dauernde Versorgung des Auslaßventiles mit 1 sicherzustellen.The invention has the task in rotary vane vacuum pumps with oil-covered exhaust valve and oil supply circulation, in which this is from a shaft or a collar surrounded exhaust valve is located above the oil level, one to ensure constant supply of the exhaust valve with 1.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß von der den Zwangsumlauf bewirkenden Ölpumpe eine Leitung so angeordnet wird, daß die von der Pumpe geförderte, nicht für die Schmierung und Dichtung von Kolben und Schiebern benötigte Ölmenge, von oben in den Schacht oder Kragen des Auslaßventiles eingeführt wird, und dasselbe unabhängig vom Ansaugdruck der Pumpe stets mit Öl überdeckt bleibt.The object is achieved according to the invention in that the forced circulation effecting oil pump a line is arranged so that the pumped by the pump, Amount of oil not required for the lubrication and sealing of pistons and slides, is introduced from above into the shaft or collar of the exhaust valve, and the same remains covered with oil regardless of the suction pressure of the pump.
Anhand der Abbildung soll nun eine Ausführungsform der Erfindung als Beispiel beschrieben werden.Based on the figure, an embodiment of the invention is now intended as Example to be described.
Die Abbildung stellt einen Längsschnitt durch eine einstufige Drehschiebervakuumpumpe dar. An dem Ständer 1 ist das Pumpsystem, bestehend aus dem Pumpenkörper 2, dem Rotor 3, den Schiebern 4 sowie den Lagerflanschen 5 und 6, angeflanscht.The illustration shows a longitudinal section through a single-stage rotary vane vacuum pump on the stand 1 is the pump system, consisting of the pump body 2, the Rotor 3, the slides 4 and the bearing flanges 5 and 6, flanged.
Das Ganze ist von dem Pumpengehäuse 7 umgeben, welches bis zu dem Niveau 8 mit Öl gefüllt ist. Oben auf dem Pumpsystem befindet sich das Auslaßventil 9, umgeben von dem Kragen oder Schacht 10. Im Ständer 1 befindet sich die Ölförderpumpe 11, welche hier in Form einer Spindelpumpe ausgebildet ist und über die Ansaugbohrung 12 mit dem Ölvorrat im Gehäuse 7 in Verbindung steht. Sie fördert über die Bohrung 13 die notwendige Menge Öl für Schmierung und Dichtung in das Pumpsystem hinein. Die überflüssige Menge wird durch die Bohrung 14 und das Röhrchen 15 zur Ölüberdeckung in das Auspuffventil gefördert. Die Dimensionierung der Bohrung 13 der Spindelpumpe und der Bohrung 12 erfolgt stets so, daß die Pumpe mehr Öl fördert als die Bohrung 13 aufnehmen kann.The whole is surrounded by the pump housing 7, which up to the Level 8 is filled with oil. The outlet valve is located on top of the pumping system 9, surrounded by the collar or shaft 10. The oil feed pump is located in the stand 1 11, which is designed here in the form of a spindle pump and via the suction hole 12 is connected to the oil supply in the housing 7. It promotes through the hole 13 the necessary amount of oil for lubrication and sealing into the pumping system. The excess amount is through the bore 14 and the tube 15 to cover the oil promoted into the exhaust valve. The dimensioning of the bore 13 of the spindle pump and the bore 12 is always carried out in such a way that the pump delivers more oil than the bore 13 can accommodate.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772758120 DE2758120A1 (en) | 1977-12-24 | 1977-12-24 | Rotary vacuum pump with oil sealed outlet valve above oil level - feeds excess oil from oil circulation pump into oil seal of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772758120 DE2758120A1 (en) | 1977-12-24 | 1977-12-24 | Rotary vacuum pump with oil sealed outlet valve above oil level - feeds excess oil from oil circulation pump into oil seal of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2758120A1 true DE2758120A1 (en) | 1979-06-28 |
Family
ID=6027359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772758120 Ceased DE2758120A1 (en) | 1977-12-24 | 1977-12-24 | Rotary vacuum pump with oil sealed outlet valve above oil level - feeds excess oil from oil circulation pump into oil seal of valve |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2758120A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4652214A (en) * | 1984-05-30 | 1987-03-24 | Arthur Pfeifer Vakuummtechnik Wetzlar Gmbh | Seal arrangement for an oil-sealed rotary vacuum pump |
| EP3376033A1 (en) * | 2017-03-14 | 2018-09-19 | Leybold GmbH | Lubricant-sealed vacuum pump |
-
1977
- 1977-12-24 DE DE19772758120 patent/DE2758120A1/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4652214A (en) * | 1984-05-30 | 1987-03-24 | Arthur Pfeifer Vakuummtechnik Wetzlar Gmbh | Seal arrangement for an oil-sealed rotary vacuum pump |
| EP3376033A1 (en) * | 2017-03-14 | 2018-09-19 | Leybold GmbH | Lubricant-sealed vacuum pump |
| WO2018166875A1 (en) * | 2017-03-14 | 2018-09-20 | Leybold Gmbh | Lubricant-sealed vacuum pump |
| CN110337544A (en) * | 2017-03-14 | 2019-10-15 | 莱宝有限公司 | Seal oil formula vacuum pump |
| CN110337544B (en) * | 2017-03-14 | 2021-10-08 | 莱宝有限公司 | Lubricating oil sealed vacuum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OAP | Request for examination filed | ||
| OD | Request for examination | ||
| 8131 | Rejection |