DE523412C - Gear pump for caustic fluids - Google Patents

Gear pump for caustic fluids

Info

Publication number
DE523412C
DE523412C DENDAT523412D DE523412DD DE523412C DE 523412 C DE523412 C DE 523412C DE NDAT523412 D DENDAT523412 D DE NDAT523412D DE 523412D D DE523412D D DE 523412DD DE 523412 C DE523412 C DE 523412C
Authority
DE
Germany
Prior art keywords
gear pump
pump
gear
caustic fluids
gears
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
DENDAT523412D
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.)
Tavannes Watch Co SA
Original Assignee
Tavannes Watch Co SA
Publication date
Application granted granted Critical
Publication of DE523412C publication Critical patent/DE523412C/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
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

Landscapes

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

Description

Zahnradpumpe für ätzende Flüssigkeiten Verwendet man Zahnradpumpen zum Fördern von ätzenden Flüssigkeiten, so leiden ganz besonders die die Eingriffslinie beider Zahnräder seitlich begrenzenden Teile der Maschine. Es bildet sich längs der Zähne in der Breite zwischen Fuß- und Kopflinie eine sich allmählich vertiefende Rinne, die einen Durchgang zwischen Saug- und Druckseite der Pumpe schafft. Der Wirkungsgrad der Maschine nimmt infolgedessen beim Gebrauch ab.Gear pump for corrosive liquids. Gear pumps are used for pumping corrosive liquids, the line of action suffer particularly of both gears laterally limiting parts of the machine. It forms lengthways of the teeth in the width between the foot and head line a gradually deepening Channel that creates a passage between the suction and pressure side of the pump. Of the As a result, the efficiency of the machine decreases with use.

Gegenstand der Erfindung ist eine Zahnradpumpe für ätzende Flüssigkeiten, wie beispielsweise gewisse Celluloselösungen, welche die obengenannten Übelstände nicht aufweist, da die die Eingriffslinie der Zahnräder beidseitig derselben begrenzenden Teile des Gehäuses aus einem besonderen widerstandsfähigen Baustoff gemacht sind, so daß auch nach einer längeren _ Gebrauchsdauer die Dichtigkeit der Pumpe, also auch ihr Nutzeffekt, stets gleich ist.The invention relates to a gear pump for corrosive liquids, such as certain cellulose solutions, which have the above-mentioned inconveniences does not have, since the line of engagement of the gears on both sides of the same delimiting Parts of the housing are made of a particularly resistant building material, so that even after a longer period of use, the tightness of the pump, i.e. also its usefulness is always the same.

Auf der Zeichnung ist beispielsweise eine Pumpe, welche erfindungsgemäß gebaut ist, in Längsschnitt (Abb. i) und Ansicht (Abb.2) dargestellt.The drawing shows, for example, a pump which, according to the invention is built, shown in longitudinal section (Fig. i) and view (Fig. 2).

Die Pumpe ist von derjenigen Art, bei welcher eine der genauen Breite der Räder entsprechende Mittelplatte i zwischen Seitenteil 2 und Deckel 3 vorgesehen ist mit einer Öffnung 6, worin das treibende Zahnrad .4 und das getriebene, 5, untergebracht sind.The pump is of the type with one of the exact width the center plate i corresponding to the wheels is provided between side part 2 and cover 3 is with an opening 6, in which the driving gear .4 and the driven, 5, housed are.

Die den Raum 7, in welchem der Eingriff der Zahnräder erfolgt, seitlich begrenzenden Teile der Maschine sind durch Scheibenringe 2o aus unätzbarem Stoff, wie beispielsweise rotsfreier Stahl, gebildet. Diese Scheibenringe sind in Vertiefungen io und i i des Seitenteils und des Deckels eingelassen. Hierdurch ist die Möglichkeit geschaffen, durch zeitweises Drehen des Ringes etwa dennoch eintretende Anfressungen auszuschalten.The space 7, in which the engagement of the gears takes place, laterally delimiting parts of the machine are made of non-etchable material by 2o washer rings, such as red-free steel. These disc rings are in recesses io and i i of the side part and the lid let in. This makes the possibility created, by occasionally turning the ring, any cracks occurring anyway turn off.

Claims (1)

PATENTANSPRUCH: Zahnradpumpe für ätzende Flüssigkeiten, bei welcher die dem Säureangriff besonders ausgesetzten, im Bereich des Eingriffs der beiden Zahnräder liegenden Teile durch säurebeständige Masse bekleidet sind, dadurch gekennzeichnet, daß beidseitig des getriebenen "Zahnrades (5) und zentrisch zu letzterem je ein aus genannter Masse bestehender Scheibenring (20) in das Pumpengehäuse eingelassen ist. PATENT CLAIM: Gear pump for corrosive liquids, in which the parts particularly exposed to the acid attack, in the area of the engagement of the two gears, are covered with acid-resistant material, characterized in that on both sides of the driven "gear (5) and centrically to the latter one from each named Mass existing disc ring (20) is embedded in the pump housing.
DENDAT523412D Gear pump for caustic fluids Expired DE523412C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE523412T

Publications (1)

Publication Number Publication Date
DE523412C true DE523412C (en) 1931-04-25

Family

ID=6551960

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT523412D Expired DE523412C (en) Gear pump for caustic fluids

Country Status (1)

Country Link
DE (1) DE523412C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2669108A (en) * 1951-12-11 1954-02-16 Evans Case Co Wick for lighters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2669108A (en) * 1951-12-11 1954-02-16 Evans Case Co Wick for lighters

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