EP0881392A3 - Arrangement for sealing a shaft passage in gear pumps - Google Patents

Arrangement for sealing a shaft passage in gear pumps Download PDF

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Publication number
EP0881392A3
EP0881392A3 EP98114385A EP98114385A EP0881392A3 EP 0881392 A3 EP0881392 A3 EP 0881392A3 EP 98114385 A EP98114385 A EP 98114385A EP 98114385 A EP98114385 A EP 98114385A EP 0881392 A3 EP0881392 A3 EP 0881392A3
Authority
EP
European Patent Office
Prior art keywords
sealing
arrangement
seal
gear pumps
shaft passage
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.)
Granted
Application number
EP98114385A
Other languages
German (de)
French (fr)
Other versions
EP0881392A2 (en
EP0881392B1 (en
Inventor
Marco Benetti
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.)
Maag Pump Systems AG
Original Assignee
Maag Pump Systems AG
Maag Pump Systems Textron AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maag Pump Systems AG, Maag Pump Systems Textron AG filed Critical Maag Pump Systems AG
Priority to EP19980114385 priority Critical patent/EP0881392B1/en
Priority to DE59813954T priority patent/DE59813954D1/en
Publication of EP0881392A2 publication Critical patent/EP0881392A2/en
Publication of EP0881392A3 publication Critical patent/EP0881392A3/en
Application granted granted Critical
Publication of EP0881392B1 publication Critical patent/EP0881392B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C15/0038—Shaft sealings specially adapted for rotary-piston machines or pumps

Abstract

Die Erfindung betrifft eine Wellendurchführung in einen Raum (R) für ein Medium (M). Ausgehend vom Raum (R) ist zunächst ein Gleitlager (GL), anschliessend eine Labyrinthdichtung (L) mit Gewindeförderrichtung (FR) gegen den Raum (R) hin und an die Labyrinthdichtung (L) anschliessend eine zweite Dichtung (SB) vorgesehen, die ein Austreten von Medium (M) auch im Stillstand der Welle (W) verhindert. Erfindungsgemäss ist, anschliessend an die zweite Dichtung (SB), eine dritte Dichtung (DGRD) vorgesehen, die gasdicht ist.

Figure 00000001
The invention relates to a shaft bushing in a space (R) for a medium (M). Starting from the room (R), a plain bearing (GL) is first provided, followed by a labyrinth seal (L) with a thread conveying direction (FR) against the room (R) and a labyrinth seal (L) followed by a second seal (SB) Leakage of medium (M) prevented even when the shaft (W) is at a standstill. According to the invention, following the second seal (SB), a third seal (DGRD) is provided which is gas-tight.
Figure 00000001
EP19980114385 1998-07-31 1998-07-31 Arrangement for sealing a shaft passage in gear pumps Expired - Lifetime EP0881392B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19980114385 EP0881392B1 (en) 1998-07-31 1998-07-31 Arrangement for sealing a shaft passage in gear pumps
DE59813954T DE59813954D1 (en) 1998-07-31 1998-07-31 Shaft passage, in particular for a gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19980114385 EP0881392B1 (en) 1998-07-31 1998-07-31 Arrangement for sealing a shaft passage in gear pumps

Publications (3)

Publication Number Publication Date
EP0881392A2 EP0881392A2 (en) 1998-12-02
EP0881392A3 true EP0881392A3 (en) 1999-02-10
EP0881392B1 EP0881392B1 (en) 2007-03-28

Family

ID=8232382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980114385 Expired - Lifetime EP0881392B1 (en) 1998-07-31 1998-07-31 Arrangement for sealing a shaft passage in gear pumps

Country Status (2)

Country Link
EP (1) EP0881392B1 (en)
DE (1) DE59813954D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10036385B2 (en) 2012-03-02 2018-07-31 Dover Pump Solutions Group (Europe) Gmbh Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement
DE202023000769U1 (en) 2023-04-06 2023-08-09 SKTEC GmbH Gear pump with sealing system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937477A (en) * 1973-12-26 1976-02-10 Borg-Warner Corporation Mechanical seal system
US4243230A (en) * 1979-10-01 1981-01-06 Crane Packing Co. Low energy tandem seal
US4291888A (en) * 1979-01-24 1981-09-29 Kobe Steel, Limited Rotor shaft sealing mechanism in synthetic resin kneading machines or extruders

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4125128C2 (en) 1990-08-10 1994-11-24 Barmag Barmer Maschf Gear pump

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937477A (en) * 1973-12-26 1976-02-10 Borg-Warner Corporation Mechanical seal system
US4291888A (en) * 1979-01-24 1981-09-29 Kobe Steel, Limited Rotor shaft sealing mechanism in synthetic resin kneading machines or extruders
US4243230A (en) * 1979-10-01 1981-01-06 Crane Packing Co. Low energy tandem seal

Also Published As

Publication number Publication date
DE59813954D1 (en) 2007-05-10
EP0881392A2 (en) 1998-12-02
EP0881392B1 (en) 2007-03-28

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