DE451416C - Safety piston for rotary lobe pumps - Google Patents

Safety piston for rotary lobe pumps

Info

Publication number
DE451416C
DE451416C DEB128115D DEB0128115D DE451416C DE 451416 C DE451416 C DE 451416C DE B128115 D DEB128115 D DE B128115D DE B0128115 D DEB0128115 D DE B0128115D DE 451416 C DE451416 C DE 451416C
Authority
DE
Germany
Prior art keywords
piston
rotary lobe
lobe pumps
safety piston
safety
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
DEB128115D
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.)
PAUL BIRKMAIER
Original Assignee
PAUL BIRKMAIER
Publication date
Priority to DEB128115D priority Critical patent/DE451416C/en
Application granted granted Critical
Publication of DE451416C publication Critical patent/DE451416C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-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
    • F04C2/34—Rotary-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
    • F04C2/344—Rotary-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)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating Pumps (AREA)

Description

Sicherheitskolben für Drehkolbenpumpen. Bekannt sind Pumpen mit zum zylindrischen Arbeitsraum außerachsig gelagerter Kolbentrommel, welche eine oder mehrere Nischen mit in diesen liegenden Kolben besitzen.Safety piston for rotary lobe pumps. Pumps are known with for cylindrical working space off-axis mounted piston drum, which one or have several niches with flasks in them.

Abb. i zeigt im Querschnitt eine solche Pumpe.Fig. I shows such a pump in cross section.

Bei der Drehung der Kolbentrommel legt sich jeweils eine Seitenfläche a der Trommelnische an eine Mantellinie der Seitenfläche des Kolbens b abdichtend an.When the piston drum rotates, one side surface is laid down in each case a sealing the drum niche to a surface line of the side surface of the piston b at.

Bei fortschreitender Abnutzung des Kolbens an der gegen die Zylindermantelfläche anliegenden Kolbenfläche tritt der Augenblick ein, in welchem die Kolbenkante c bis zur Trommelkante e vorglei.tet und danach vor dieser Kante zu liegen kommt.With increasing wear of the piston against the cylinder jacket surface adjacent piston surface occurs the moment in which the piston edge c glides forward up to the drum edge e and then comes to rest in front of this edge.

Abb. 2 zeigt einen Querschnitt eines derart abgelaufenen Kolbens.Fig. 2 shows a cross section of a piston that has expired in this way.

Dies hat erfahrungsgemäß eine Beschädigung und Zerstörung der Kanten c und d, der Nischen- und Kolhenseitenflächen a. und b und der zylindrischen Wand e des Arbeitsraums zur Folge.Experience has shown that this has a damage and destruction of the edges c and d, the niche and piston side surfaces a. and b and the cylindrical wall e of the working space result.

Dieser Mißstand wird dadurch behoben, daß in den Kolben eine Verbindungsleitung vom Saug- zum Druckraum angeordnet wird, welche nach einer gewissen Abnutzung der gegen die Zylindermantelfläche anliegenden Kolbenfläche freigelegt wird.This deficiency is remedied by the fact that a connecting line in the piston is arranged from the suction to the pressure chamber, which after a certain wear of the is exposed against the cylinder surface adjacent piston surface.

Hierdurch hört, ehe der Kolben seine Führung v erläßt, die Pumpe auf, zu arbeiten, was rechtzeitigen Ersatz des abgelaufenen Kolbens veranlaßt.As a result, the pump stops before the piston leaves its guide, to work, which causes timely replacement of the expired piston.

Abb. 3 zeigt einen Querschnitt durch einen solchen Kolben in noch nicht abgenutztem Zustande.Fig. 3 shows a cross section through such a piston in still not worn condition.

Abb. q. zeigt denselben Kolben in so weit abgenutztem Zustande, daß die Pumpe aufgehört hat, zu arbeiten.Fig.q. shows the same piston so worn that the pump has stopped working.

Die Verbindung zwischen Saug- und Druckraum wird durch einen unter der Kante d hindurchführenden offenen Kanal/ hergestellt. Statt eines Kanals/ können mehrere offene oder ein oder mehrere geschlossene Kanäle g von beliebigem Querschnitt angeordnet werden.The connection between the suction and pressure chamber is made by an under the edge d through the open channel / established. Instead of a channel / can several open or one or more closed channels g of any cross-section to be ordered.

Da die Pumpe in beiderlei Drehsinn gebraucht wird, so erhält die gegenüberliegende Seite des Kolbens den gleichen Kanal.Since the pump is used in both directions of rotation, the opposite one receives Side of the piston the same channel.

Claims (1)

PATENTANSPRÜCHE: i. Sicherheitskolben für Drehkolbenpumpen, dadurch gekennzeichnet, daß nach einer gewissen Abnutzung der gegen die Zylindermantel-Räche anliegenden Kolbenfläche eine Verbindungsleitung vom Saugzum Druckraum freigelegt wird, so daß die Förderung der Pumpe aufhört. Sicherheitskolben für Pumpen nach Anspruch i, dadurch gekennzeichnet, daß in dem Kolben ein oder mehrere offene oder geschlossene, die Verbindung herstellende Kanäle angeordnet sind. PATENT CLAIMS: i. Safety piston for rotary lobe pumps, characterized in that after a certain amount of wear and tear on the piston surface resting against the cylinder jacket surface, a connecting line from the suction to the pressure chamber is exposed, so that the pumping of the pump ceases. Safety piston for pumps according to Claim i, characterized in that one or more open or closed channels which establish the connection are arranged in the piston.
DEB128115D Safety piston for rotary lobe pumps Expired DE451416C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB128115D DE451416C (en) Safety piston for rotary lobe pumps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB128115D DE451416C (en) Safety piston for rotary lobe pumps

Publications (1)

Publication Number Publication Date
DE451416C true DE451416C (en) 1927-10-20

Family

ID=6997058

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB128115D Expired DE451416C (en) Safety piston for rotary lobe pumps

Country Status (1)

Country Link
DE (1) DE451416C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189263A (en) * 1962-02-08 1965-06-15 Fichtel & Sachs Ag Packing system for rotary combustion engine and the like
US3469500A (en) * 1967-11-06 1969-09-30 Ingersoll Rand Co Vane-type fluid motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189263A (en) * 1962-02-08 1965-06-15 Fichtel & Sachs Ag Packing system for rotary combustion engine and the like
US3469500A (en) * 1967-11-06 1969-09-30 Ingersoll Rand Co Vane-type fluid motor

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