DE605006C - Rotary lobe pump with pistons that can be moved in the rotating piston drum - Google Patents

Rotary lobe pump with pistons that can be moved in the rotating piston drum

Info

Publication number
DE605006C
DE605006C DEF74992D DEF0074992D DE605006C DE 605006 C DE605006 C DE 605006C DE F74992 D DEF74992 D DE F74992D DE F0074992 D DEF0074992 D DE F0074992D DE 605006 C DE605006 C DE 605006C
Authority
DE
Germany
Prior art keywords
pistons
piston
moved
rotary lobe
pressure
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.)
Expired
Application number
DEF74992D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Priority to DEF74992D priority Critical patent/DE605006C/en
Application granted granted Critical
Publication of DE605006C publication Critical patent/DE605006C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/30Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Description

Drehkolbenpumpe mit in der umlaufenden Kolbentrommel verschiebbaren Kolben Bei Drehkolbenpumpen mit verschiebbaren Kolben in der Kolbentrommel treten oft Verklemmungen der Kolben auf, die starke Abnutzung und schlechten Wirkungsgrad der Pumpen verursachen. Der Grund hierfür liegt im wesentlichen darin, daß die Gleitkolben bei ihrer Bewegung gegen die den Druck aufzunehmenden Gleitflächen der Kolbenführung gepreßt werden. Wenn bei hoher Umlaufsggeschwindigkeit der Druck groß wird und die Pumpen gegen hohen Förderdruck arbeiten müssen, wird der Anpreßdruck so hoch, daß der Verschleiß sehr groß wird.Rotary lobe pump with displaceable in the rotating piston drum Piston With rotary lobe pumps with displaceable pistons, step into the piston barrel often piston jamming, heavy wear and poor efficiency cause of the pumps. The reason for this is essentially that the sliding piston when they move against the sliding surfaces of the piston guide to be absorbed by the pressure be pressed. When the pressure becomes large at high speed and the Pumps have to work against high delivery pressure, the contact pressure is so high that the wear becomes very great.

Um die Reibung der Kolbenschieber an ihres Führungswand zu verkleinern und dadurch die Abnutzung mit ihren nachteiligen Folgen herabzusetzen, ist vorgeschlagen worden, die gleitende Reibung durch Einbau von Rollen in eine rollende Reibung zu verwandeln.To reduce the friction between the piston valve and its guide wall and thereby reducing the wear and tear, with its detrimental consequences, is proposed been added to the sliding friction by incorporating rollers into a rolling friction transform.

Nach vorliegender Erfindung sollen die den Druck der Kolben aufnehmenden Gleitflächen der Kolbentrommel dadurch ,entlastet werden, daß die Gleitflächen mit einem roder mehreren Hohlräumen versehen werden, die mit der Druckkammer der Llumpe in Verbindung stehen.According to the present invention, they should absorb the pressure of the pistons Sliding surfaces of the piston drum are relieved in that the sliding surfaces are also relieved one or more cavities are provided, which are connected to the pressure chamber of the pump stay in contact.

Aus den Abb. i und z ist ein Ausführungsbeispiel der Erfindung ersichtlich.f Abb. i stellt einen Längsschnitt, Abb. z reinen Querschnitt durch die Pumpe dar.From Figs. I and z an embodiment of the invention can be seen.f Fig. I shows a longitudinal section, Fig. Z a pure cross section through the pump.

Zwischen der Kolbentrommel a und dem Gehäuse b befinden sich, getrennt durch die Gleitkolhen c, die Saugkammer d und die Druckkammer e. Die Gleitkolben c, welche durch die Fliehkraft gegen die Wandung des Gehäuses b gedrückt werden, machen infolge der exzentrischen Lage der Kolbentrommel a im Gehäuse reine hin und her gehende Bewegung, wobei sie mit der Trommel a in der eingezeichneten Drehrichtung umlaufen. Wie aus Abb. a zu ersehen ist, steht der untere Schieberkolben c mit der Druckkammer e in Verbindung, wird also durch dien Flüssigkeitsdruck gegen die Gleitfläche f gedrückt. Hierbei entsteht ein kleiner Spalt zwischen Schieberkolben c und der Gleitfläche g, wodurch die Druckflüssigkeit über den Führungsschlitz h, durch die Öffnung i in die Öffnung h der Trommel a gelangen kann. Von hier aus gelangt sie über die öffnungen 1, m, n in die Hohlräume o hinter dem Kolben c.The suction chamber d and the pressure chamber e are located between the piston drum a and the housing b, separated by the sliding pistons c. The sliding pistons c, which are pressed by the centrifugal force against the wall of the housing b, make pure back and forth movement due to the eccentric position of the piston drum a in the housing, rotating with the drum a in the direction of rotation shown. As can be seen from Fig. A, the lower slide piston c is connected to the pressure chamber e, i.e. is pressed against the sliding surface f by the fluid pressure. This creates a small gap between the slide piston c and the sliding surface g, whereby the pressure fluid can reach the opening h of the drum a via the guide slot h, through the opening i. From here it passes through the openings 1, m, n into the cavities o behind the piston c.

Steigt nun der Druck in der Druckkammer e, so steigt per auch im gleichen Maße in den -Öffnungen bzw. Hohlräumen, die Gleitflächen f werden dadurch wesentlich entlastet.If the pressure in the pressure chamber e now rises, then per also rises in the same Dimensions in the openings or cavities, the sliding surfaces f become essential relieved.

,,Die Abb. g stellt eine andere Ausführungsform dar. Die Entlastung der Gleitflächen f wird hier dadurch erreicht, daß sich an Stelle der Hohlräumen, o nur ein Hohlraum p befindet, welcher in derselben Weise mit der Druckkammer e in Verbindung steht wie die Hohlräume h, o in der ersten Ausführung. Die der Entlastung dienenden Hohlräume werden also durch Druckflüssigkeit gefüllt, die an undichten Stellen zwischen Schieberkolben und Führungsflächen über besondere Bohrungen von der Druckseite her durchgetreten ist. Die Überleitung der Flüssigkeit kann aber auch durch besondere Ausgleichsöffnungen von der Druckseite her erfolgen.“Fig. G shows another embodiment. The relief of the sliding surfaces f is achieved here in that instead of the cavities, o there is only one cavity p, which in the same way with the pressure chamber e is connected like the cavities h, o in the first embodiment. That of discharge Serving cavities are therefore filled by hydraulic fluid that is leaking Places between the spool and guide surfaces via special bores from the pressure side has passed through. The transfer of the liquid can, however can also be done through special compensation openings on the pressure side.

Claims (1)

PATENTANSPRUCH: Drehkolbenpumpe mit in der umlaufenden Kolbentrommel verschiebbaren Kolben, dadurch gekennzeichnet, daß an der den Druck der Kolben aufnehmenden Gleitfläche der Kolbentrommel Hohlräume vorgesehen sind, die mit der Druckkammer der Pumpe in Verbindung stehen. PATENT CLAIM: Rotary piston pump with pistons displaceable in the rotating piston drum, characterized in that cavities are provided on the piston drum's sliding surface that absorbs the pressure of the pistons and are connected to the pressure chamber of the pump.
DEF74992D Rotary lobe pump with pistons that can be moved in the rotating piston drum Expired DE605006C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF74992D DE605006C (en) Rotary lobe pump with pistons that can be moved in the rotating piston drum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF74992D DE605006C (en) Rotary lobe pump with pistons that can be moved in the rotating piston drum

Publications (1)

Publication Number Publication Date
DE605006C true DE605006C (en) 1934-11-02

Family

ID=7112340

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF74992D Expired DE605006C (en) Rotary lobe pump with pistons that can be moved in the rotating piston drum

Country Status (1)

Country Link
DE (1) DE605006C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201033A (en) * 1963-03-04 1965-08-17 Lacy Hulbert And Company Ltd Vane-type rotary air pumps
DE1300440B (en) * 1964-04-17 1969-09-18 Teves Gmbh Alfred Rotating displacement machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3201033A (en) * 1963-03-04 1965-08-17 Lacy Hulbert And Company Ltd Vane-type rotary air pumps
DE1300440B (en) * 1964-04-17 1969-09-18 Teves Gmbh Alfred Rotating displacement machine

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