DE19852181B4 - Screw conveyor for an eccentric screw pump - Google Patents
Screw conveyor for an eccentric screw pump Download PDFInfo
- Publication number
- DE19852181B4 DE19852181B4 DE1998152181 DE19852181A DE19852181B4 DE 19852181 B4 DE19852181 B4 DE 19852181B4 DE 1998152181 DE1998152181 DE 1998152181 DE 19852181 A DE19852181 A DE 19852181A DE 19852181 B4 DE19852181 B4 DE 19852181B4
- Authority
- DE
- Germany
- Prior art keywords
- screw
- flattening
- screw conveyor
- stator
- eccentric
- 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 - Fee Related
Links
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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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
-
- 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
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
Abstract
Eine Förderschnecke für eine Exzenterschneckenpumpe weist in bekannter Weise einen Schneckenkörper (102) und am einen Ende dieses Schneckenkörpers (102) einen Antriebskopf (101) auf. Die Erhebung (103) des Schneckenkörpers (102) ist in ihrem radial äußersten Bereich mit einer Abflachung (107) versehen. Durch diese Abflachung (107) wird die Kontaktfläche zum Statur der Exzenterschneckenpumpe, mit dem die Förderschnecke zusammenwirkt, vergrößert, was wiederum den Verschleiß des Stators verringert.A screw conveyor for an eccentric screw pump has a screw body (102) in a known manner and a drive head (101) at one end of this screw body (102). The elevation (103) of the screw body (102) is provided with a flattening (107) in its radially outermost region. This flattening (107) increases the contact area with the stature of the eccentric screw pump, with which the screw conveyor interacts, which in turn reduces the wear on the stator.
Description
Die Erfindung betrifft eine Förderschnecke für eine Exzenterschneckenpumpe mit
- a) einem Schneckenkörper, der eine sich um die Längsachse des Schneckenkörpers windende wendelförmige Erhebung aufweist;
- b) einem an einem Ende des Schneckenkörpers angeordneten Antriebskopf.
- a) a screw body having a spiraling around the longitudinal axis of the screw body helical elevation;
- b) a arranged at one end of the worm body drive head.
Förderschnecken dieser Art sind in großer Zahl und verschiedenen Detailausgestaltungen auf dem Markt. Eine allgemeine Beschreibung findet sich beispielsweise in dem Buch ”Pumpenatlas”, AGT Verlag Thum GmbH, 1966. Die bekannten Förderschnecken, wie sie z. B. auch in der
Aufgabe der vorliegenden Erfindung ist es, eine Förderschnecke der eingangs genannten Art so auszugestalten, daß Verschleißerscheinungen insbesondere am Stator reduziert sind.Object of the present invention is to provide a screw conveyor of the type mentioned in such a way that wear phenomena are reduced in particular on the stator.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Erhebung des Schneckenkörpers in ihrem radial äußersten Bereich eine wendelförmige Abflachung aufweist.This object is achieved in that the collection of the screw body has a helical flattening in its radially outermost region.
Durch die erfindungsgemäß vorgesehene wendelförmige Abflachung lässt sich eine größere Kontaktfläche zwischen Schneckenkörper und Stator erzielen als dies beim Stande der Technik der Fall war. Die Vergrößerung der Kontaktfläche geht einher mit einer Verkleinerung der lokalen Flächenpressung, was in der Folge den Verschleiß reduziert.By means of the helical flattening provided according to the invention, a larger contact surface between the screw body and the stator can be achieved than was the case in the prior art. The enlargement of the contact surface is accompanied by a reduction of the local surface pressure, which consequently reduces the wear.
Die Grundform des Schneckenkörpers kann dabei – in an und für sich bekannter Weise – gewirbelt und zur Erzielung der Abflachung überschliffen oder überdreht sein. Alternativ kann auch der gesamte Schneckenkörper – einschließlich der Abflachung – gegossen sein.The basic shape of the screw body can be - in a known manner - swirled and ground to achieve the flattening or over-turned. Alternatively, the entire screw body - including the flattening - be poured.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert; es zeigenAn embodiment of the invention will be explained in more detail with reference to the drawing; show it
Die in
Die in
Die in
Auch die Förderschnecke von
Anders als die bekannte Förderschnecke von
Die Berührungssituation zwischen der Erhebung
Die Abflachung
Die beschriebene Förderschnecke mit Abflachung
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998152181 DE19852181B4 (en) | 1998-11-12 | 1998-11-12 | Screw conveyor for an eccentric screw pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998152181 DE19852181B4 (en) | 1998-11-12 | 1998-11-12 | Screw conveyor for an eccentric screw pump |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19852181A1 DE19852181A1 (en) | 2000-05-18 |
DE19852181B4 true DE19852181B4 (en) | 2012-01-12 |
Family
ID=7887554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1998152181 Expired - Fee Related DE19852181B4 (en) | 1998-11-12 | 1998-11-12 | Screw conveyor for an eccentric screw pump |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19852181B4 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103883522B (en) * | 2014-03-17 | 2016-03-02 | 北京工业大学 | A kind of curved surface forming method of Conic thread rod-lining pair |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1889822A (en) * | 1930-05-10 | 1932-12-06 | Kenneth S Clapp | Pump |
US2625885A (en) * | 1948-03-04 | 1953-01-20 | Fmc Corp | Ink pump |
DE3605663A1 (en) * | 1986-02-21 | 1987-08-27 | Lorenz Baron | Repair set for eccentric screw pump |
-
1998
- 1998-11-12 DE DE1998152181 patent/DE19852181B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1889822A (en) * | 1930-05-10 | 1932-12-06 | Kenneth S Clapp | Pump |
US2625885A (en) * | 1948-03-04 | 1953-01-20 | Fmc Corp | Ink pump |
DE3605663A1 (en) * | 1986-02-21 | 1987-08-27 | Lorenz Baron | Repair set for eccentric screw pump |
Also Published As
Publication number | Publication date |
---|---|
DE19852181A1 (en) | 2000-05-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20120413 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |