DE1080117B - Rotary piston machine with sealing gaps narrowed by covers - Google Patents
Rotary piston machine with sealing gaps narrowed by coversInfo
- Publication number
- DE1080117B DE1080117B DEB52501A DEB0052501A DE1080117B DE 1080117 B DE1080117 B DE 1080117B DE B52501 A DEB52501 A DE B52501A DE B0052501 A DEB0052501 A DE B0052501A DE 1080117 B DE1080117 B DE 1080117B
- Authority
- DE
- Germany
- Prior art keywords
- adhesive
- rotary piston
- piston machine
- commercially available
- mixture
- 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.)
- Pending
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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Material Composition (AREA)
- Paints Or Removers (AREA)
Description
Drehkolbenmaschine mit durch Überzüge verengten Dichtspalten Das Hauptpatent 1065 426 betrifft eine Drehkolbenmaschine, deren Drehkolben und/oder Gehäusewandflächen zwecks Verengung der die Arbeitsräume abdichtenden Spalte mit mehrschichtigen Überzügen versehen sind, wobei diese Überzüge sich aus einer dem Abrieb nicht ausgesetzten, aus einem Klebstoff, wie einem Äthoxylinharz oder Silicon oder ähnlichen Stoffen, bestehenden Grundschicht und aus einer oder mehreren Oberschichten aus diesem Klebstoff mit Beimengungen von Metallpulver, Asbestpulver, Talkum, Molybdändisulfid, Graphit od. dgl. zusammensetzen. Bei diesen Überzügen kann ein Ablösen oder Herausbrechen von Teilen des Überzuges oder ein Zusammenballen von abgeriebenen Teilchen nicht eintreten. Sowohl der Klebstoff wie die Beimengungen mit Ausnahme von Molybdändisulfid und Graphit weisen jedoch schlechte Gleiteigenschaften auf, die trotz der Beimengung von Molybdändisulfid oder Graphit bei hohen Gleitgeschwindigkeiten unzulässig große Erwärmung verursachen können.Rotary piston machine with narrowed by coatings sealing gaps The main Patent 1065 426 relates to a rotary piston engine, the rotary piston and / or body panels for the purpose of narrowing of the working spaces sealing gaps are provided with multilayer coatings, these coatings are not exposed from an abrasion, of an adhesive, such as a Ethoxylin resin or silicone or similar substances, existing base layer and one or more top layers of this adhesive with admixtures of metal powder, asbestos powder, talc, molybdenum disulfide, graphite or the like. With these coatings peeling off or breaking out of parts of the coating or agglomeration of abraded particles cannot occur. Both the adhesive and the admixtures, with the exception of molybdenum disulphide and graphite, however, have poor sliding properties which, despite the admixture of molybdenum disulphide or graphite, can cause excessive heating at high sliding speeds.
Es wurde nun gefunden, daß die Verwendung einer Mischung von Kunststoffen mit Molybdändisulfid oder Graphit, wie sie die handelsüblichen Gleitlacke darstellen, an Stelle der genannten Beimengungen ausgezeichnete Ergebnisse bringt.It has now been found that the use of a mixture of plastics with molybdenum disulfide or graphite, as represented by commercially available bonded coatings, in place of the mentioned admixtures brings excellent results.
Die handelsüblichen Gleitlacke verfügen infolge ihrer Zusammensetzung aus Kunststoffen und Molybdändisulfid oder Graphit über gute Gleiteigenschaften, reiben sich aber verhältnismäßig leicht ab und sind nur bei absolutem Trockenlauf verwendbar. Das Auftreten von Flüssigkeit im Arbeitsraum ist jedoch bei Drehkolbenmaschinen meist unvermeidbar, sei es, daß sich Wasser aus dem Arbeitsmittel abscheidet oder Schmierstoffe aus den Lagerstellen in den Arbeitsraum gelangen. Sobald diese Flüssigkeiten im Arbeitsraum vorhanden sind, treten in den Dichtspalten unter dem Einfluß der Flüssigkeit Erosionserscheinungen an der Gleitlackschicht auf, die besonders bei Flächendichtung und hohen Relativgeschwindigkeiten zur Zerstörung der Gleitlackschicht führen, selbst dann, wenn sich die Wände der Spalte nicht mehr berühren.The commercially available bonded coatings have due to their composition made of plastics and molybdenum disulfide or graphite have good sliding properties, but rub off relatively easily and are only possible when running absolutely dry usable. The occurrence of liquid in the working space is, however, in rotary piston machines mostly unavoidable, be it that water separates from the working fluid or Lubricants get from the bearings into the work area. Once these fluids are present in the work area, occur in the sealing gaps under the influence of Liquid erosion phenomena on the sliding lacquer layer, which are particularly evident in Surface sealing and high relative speeds to destroy the sliding lacquer layer lead, even if the walls of the column no longer touch.
Durch Verwendung einer Mischung von Klebstoff und handelsüblichem Gleitlack werden alle diese Schwierigkeiten vermieden, da diese Mischung die erforderlichen Gleiteigenschaften und infolge der Klebstoffbeimischung eine große Widerstandsfähigkeit gegen Erosion aufweist.By using a mixture of glue and commercially available Lubricating varnish avoids all of these difficulties as this mixture provides the necessary Sliding properties and, due to the addition of adhesive, great resistance against erosion.
Erfindungsgemäß besteht daher die Oberschicht aus einer Mischung von einem Klebstoff, wie einem Äthoxylinharz oder Silicon oder ähnlichen Stoffen, mit einem handelsüblichen, Graphit oder Molybdändisulfid enthaltenden Gleitlack. Da sich diese Oberschicht beim Auftragen und beim Aushärten jedoch teilweise entmischt und sich auf diese Weise eine Grundschicht aus Klebstoff selbsttätig bildet, so genügt es, auf die entsprechend vorbereiteten, d. h. entfetteten Flächen eine Mischung von Klebstoff mit handelsüblichem Gleitlack unmittelbar aufzutragen.According to the invention, therefore, the top layer consists of a mixture of an adhesive such as an ethoxylin resin or silicone or similar substances a commercially available lubricating varnish containing graphite or molybdenum disulphide. There However, this top layer partially separates itself during application and curing and in this way a base layer of adhesive forms automatically, see above it is sufficient to refer to the appropriately prepared, d. H. degreased surfaces a mixture of adhesive to be applied directly with commercially available bonded varnish.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB52501A DE1080117B (en) | 1959-03-17 | 1959-03-17 | Rotary piston machine with sealing gaps narrowed by covers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB52501A DE1080117B (en) | 1959-03-17 | 1959-03-17 | Rotary piston machine with sealing gaps narrowed by covers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1080117B true DE1080117B (en) | 1960-04-21 |
Family
ID=6969908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB52501A Pending DE1080117B (en) | 1959-03-17 | 1959-03-17 | Rotary piston machine with sealing gaps narrowed by covers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1080117B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2940397A1 (en) * | 1979-10-05 | 1981-04-16 | Robert Bosch Gmbh, 7000 Stuttgart | WINGED CELL MACHINE, IN PARTICULAR COMPRESSED AIR MOTOR |
DE3014519A1 (en) * | 1980-04-16 | 1981-10-22 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | TURNING PISTON, IN PARTICULAR CELL PUMP |
-
1959
- 1959-03-17 DE DEB52501A patent/DE1080117B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2940397A1 (en) * | 1979-10-05 | 1981-04-16 | Robert Bosch Gmbh, 7000 Stuttgart | WINGED CELL MACHINE, IN PARTICULAR COMPRESSED AIR MOTOR |
DE3014519A1 (en) * | 1980-04-16 | 1981-10-22 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | TURNING PISTON, IN PARTICULAR CELL PUMP |
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