DE19963173B4 - Screw vacuum pump - Google Patents
Screw vacuum pump Download PDFInfo
- Publication number
- DE19963173B4 DE19963173B4 DE1999163173 DE19963173A DE19963173B4 DE 19963173 B4 DE19963173 B4 DE 19963173B4 DE 1999163173 DE1999163173 DE 1999163173 DE 19963173 A DE19963173 A DE 19963173A DE 19963173 B4 DE19963173 B4 DE 19963173B4
- Authority
- DE
- Germany
- Prior art keywords
- pump according
- waves
- rotors
- rotor
- bushings
- 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
Images
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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/0078—Fixing rotors on shafts, e.g. by clamping together hub and shaft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Schraubenvakuumpumpe mit zwei Wellen (5, 6), die jeweils einen Rotor (1, 2) mit einem oder mehreren äußeren Schraubengängen (3, 4) tragen, dadurch gekennzeichnet, dass sich zwischen den Wellen (5, 6) und den zugehörigen Rotoren (1, 2) jeweils eine Buchse (9, 10) befindet und dass die Summe der Wandstärken der Buchsen (9, 10) etwas größer ist als die Tiefe der Schraubengänge (3, 4).Screw vacuum pump with two shafts (5, 6), each carrying a rotor (1, 2) with one or more external screw threads (3, 4), characterized in that between the shafts (5, 6) and the associated rotors ( 1, 2) each have a bush (9, 10) and that the sum of the wall thicknesses of the bushes (9, 10) is slightly larger than the depth of the screw threads (3, 4).
Description
Die Erfindung bezieht sich auf eine Schraubenvakuumpumpe mit zwei Wellen, die jeweils einen Rotor mit einem oder mehreren Schraubengängen tragen.The invention relates to a screw vacuum pump with two shafts, each carrying a rotor with one or more screw threads.
Bei Schraubenvakuumpumpen dieser Art, wie sie beispielsweise aus der
Auf Grund der gemeinsamen Montage und Demontage der Rotoren ist ein relativ hoher Handlingsaufwand erforderlich. Dieser ist um so größer, je größer das Gewicht der Rotoren ist. Wenn eine Demontage und erneute Montage am Betriebsort der Pumpe gefordert wird (zum Beispiel zur Reinigung oder sonstigen Wartungsarbeiten), ist der erforderliche Aufwand für entsprechende Hebezeuge oft nicht realisierbar.Due to the common assembly and disassembly of the rotors a relatively high handling effort is required. This is the greater, the greater the weight of the rotors. If disassembly and reassembly is required at the pump site (for example, for cleaning or other maintenance work), the required effort for corresponding hoists is often not feasible.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, die Montage und Demontage von Schraubenvakuumpumpen zu vereinfachen.The present invention is based on the object to simplify the assembly and disassembly of screw vacuum pumps.
Diese Aufgabe wird durch die kennzeichnenden Merkmale der Patentansprüche gelöst.This object is solved by the characterizing features of the claims.
Durch die Erfindung ist es möglich, beide Rotoren einzeln nacheinander auf ihre Wellen aufzubringen. Dazu werden sie ohne Buchsen exzentrisch aufgeschoben. Danach werden sie durch Verschieben und mit Hilfe der Buchsen in ihre Betriebsposition gebracht, bei der die Schraubengänge der beiden Rotoren ineinander greifen. Eine derartige Montage der Rotoren ist nicht nur wegen der Einzel-Montage der Rotoren einfacher; die Rotoren haben auch wegen der separaten Buchsen ein geringeres Gewicht.The invention makes it possible to apply both rotors one after the other to their shafts. For this they are pushed eccentrically without bushes. Then they are brought into their operating position by displacement and with the aid of the bushings, in which the screw threads of the two rotors intermesh. Such a mounting of the rotors is not only easier because of the individual assembly of the rotors; the rotors are also lighter because of the separate bushes.
Die Buchsen bieten außerdem die Möglichkeit, die Fixierung der Rotoren auf der Welle bzgl. Drehmoment und axialer Kräfte kraftschlüssig und/oder formschlüssig auszuführen. Darüber hinaus kann zusätzlich die Einstellung der erforderlichen Winkelposition der beiden Rotoren zueinander durch Verdrehen oder axiales Verschieben eines Rotors in einfacher Weise durchgeführt werden. Der durch die Buchsen erreichte Montage- und Demontage-Vorteil kann sowohl bei einseitig gelagerten als auch bei beidseitig gelagerten Wellen benutzt werden. Besonders vorteilhaft ist jedoch der Einsatz der Erfindung bei einseitig (fliegend) gelagerten Rotoren, bei denen der Aufwand für die Wartung erheblich reduziert wird.The bushings also offer the possibility of frictionally and / or positively locking the fixing of the rotors on the shaft with respect to torque and axial forces. In addition, in addition, the adjustment of the required angular position of the two rotors to each other by twisting or axial displacement of a rotor can be performed in a simple manner. The assembly and disassembly advantage achieved by the bushings can be used both on cantilevered as well as on both sides mounted shafts. However, particularly advantageous is the use of the invention in one-sided (flying) mounted rotors, in which the cost of maintenance is significantly reduced.
Weitere Vorteile und Einzelheiten der Erfindung sollen an Hand von in den
Die
In den Figuren sind die beiden hohl ausgebildeten Rotoren der Rotorpaare jeweils mit
Bei der Ausführung nach
Die Demontage der Lösung nach
Bei der Ausführung nach
Bei der Ausführung nach
Saugseitig sind die Buchsen
Der saugseitige Abschnitt der Buchsen
Beim Ausführungsbeispiel nach
Um die getrennte Zu- und Abfuhr des Kühlmittels durch die Sackbohrung
Die Außenseite der Buchse
Die beschriebene Vorrichtung ermöglicht es, den Ringraum
Der besondere Vorteil der beschriebenen Anordnung liegt darin, dass der Ringraum
Claims (12)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999163173 DE19963173B4 (en) | 1999-12-27 | 1999-12-27 | Screw vacuum pump |
PCT/EP2000/012337 WO2001048384A1 (en) | 1999-12-27 | 2000-11-01 | Screw vacuum pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999163173 DE19963173B4 (en) | 1999-12-27 | 1999-12-27 | Screw vacuum pump |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19963173A1 DE19963173A1 (en) | 2001-06-28 |
DE19963173B4 true DE19963173B4 (en) | 2011-05-19 |
Family
ID=7934618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1999163173 Expired - Fee Related DE19963173B4 (en) | 1999-12-27 | 1999-12-27 | Screw vacuum pump |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE19963173B4 (en) |
WO (1) | WO2001048384A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10039006A1 (en) * | 2000-08-10 | 2002-02-21 | Leybold Vakuum Gmbh | Two-shaft vacuum pump |
US8764424B2 (en) * | 2010-05-17 | 2014-07-01 | Tuthill Corporation | Screw pump with field refurbishment provisions |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1293383B (en) * | 1958-02-07 | 1969-04-24 | Aktiebolag Svenska Rotor Maski | Rotary lobe compressors |
DE19522560A1 (en) * | 1995-06-21 | 1997-01-02 | Sihi Ind Consult Gmbh | Vacuum pump with pair of helical inter-meshing displacement rotors |
DE19736017A1 (en) * | 1997-08-20 | 1999-02-25 | Peter Frieden | Vacuum pump or compressor for compacting gases |
EP0965756A2 (en) * | 1998-06-17 | 1999-12-22 | The BOC Group plc | Screw pump |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2442254A (en) * | 1943-03-27 | 1948-05-25 | Joseph E Whitfield | Composite metal article |
FR1290239A (en) * | 1961-02-28 | 1962-04-13 | Alsacienne Constr Meca | Vacuum pump |
DE19522555A1 (en) * | 1995-06-21 | 1997-01-02 | Sihi Ind Consult Gmbh | Dual-rotor type rotary piston compressor e.g. for vacuum pump |
-
1999
- 1999-12-27 DE DE1999163173 patent/DE19963173B4/en not_active Expired - Fee Related
-
2000
- 2000-11-01 WO PCT/EP2000/012337 patent/WO2001048384A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1293383B (en) * | 1958-02-07 | 1969-04-24 | Aktiebolag Svenska Rotor Maski | Rotary lobe compressors |
DE19522560A1 (en) * | 1995-06-21 | 1997-01-02 | Sihi Ind Consult Gmbh | Vacuum pump with pair of helical inter-meshing displacement rotors |
DE19736017A1 (en) * | 1997-08-20 | 1999-02-25 | Peter Frieden | Vacuum pump or compressor for compacting gases |
EP0965756A2 (en) * | 1998-06-17 | 1999-12-22 | The BOC Group plc | Screw pump |
Also Published As
Publication number | Publication date |
---|---|
DE19963173A1 (en) | 2001-06-28 |
WO2001048384A1 (en) | 2001-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110701 |