EP0849469A3 - Twin cylinder slurry pump with a pipe switch - Google Patents
Twin cylinder slurry pump with a pipe switch Download PDFInfo
- Publication number
- EP0849469A3 EP0849469A3 EP97120146A EP97120146A EP0849469A3 EP 0849469 A3 EP0849469 A3 EP 0849469A3 EP 97120146 A EP97120146 A EP 97120146A EP 97120146 A EP97120146 A EP 97120146A EP 0849469 A3 EP0849469 A3 EP 0849469A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- sealing
- tube
- spring element
- cutting ring
- spectacle plate
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0084—Component parts or details specially adapted therefor
- F04B7/0088—Sealing arrangements between the distribution members and the housing
- F04B7/0096—Sealing arrangements between the distribution members and the housing for pipe-type distribution members
Landscapes
- Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Die Erfindung bezieht sich auf eine Rohrweiche für eine Zweizylinder-Dickstoffpumpe insbesondere für eine Betonpumpe. Die Rohrweiche weist ein vor einer zylinderseitigen Brillenplatte (18) verschwenkbares Schwenkrohr (20) auf, das an der Brillenplatte (18) mit einem auf dem Rohrende des Schwenkrohrs (20) mit einem Bruchteil seiner Länge unter Bildung eines radialen Führungsspalts (52) axial geführten Schneidring (22) dichtend anliegt, welcher Schneidring (22) durch ein ringförmiges Dicht- und Federelement (50) auf die Brillenplatte (18) gedrückt ist, wobei das vom Druck des Fördermediums innenseitig beaufschlagte Dicht- und Federelement (50) an zwei einander zugewandten Dicht- und Stützflächen (46, 41) des Schwenkrohrs (20) und des Schneidrings (22) unter Überbrückung und Abdichtung des Führungsspalts (52) anliegt. Erfindungsgemäß weist das Dicht- und Federelement (50) einen ringförmig geschlossenen Rundschlauch aus kautschukelastischem Material auf, in dessen zentralem Kanal ein schraubenförmig gewundener, an seinen Enden offener Drahtring (64) aus steifelastischem Material angeordnet ist. The invention relates to a pipe switch for a two-cylinder thick matter pump, in particular for a concrete pump. The tube switch has a swivel tube (20) which can be swiveled in front of a cylinder-side spectacle plate (18) and which is axially guided on the spectacle plate (18) with a fraction of its length on the tube end of the swivel tube (20), forming a radial guide gap (52) Cutting ring (22) rests sealingly, which cutting ring (22) is pressed onto the spectacle plate (18) by an annular sealing and spring element (50), the sealing and spring element (50) acting on the inside from the pressure of the conveying medium on two facing one another Sealing and support surfaces (46, 41) of the swivel tube (20) and the cutting ring (22) abut by bridging and sealing the guide gap (52). According to the invention, the sealing and spring element (50) has an annularly closed round tube made of rubber-elastic material, in the central channel of which a helically wound wire ring (64) made of rigid plastic material is arranged at its ends.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19654023 | 1996-12-21 | ||
DE19654023A DE19654023A1 (en) | 1996-12-21 | 1996-12-21 | Diverter for a two-cylinder thick matter pump |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0849469A2 EP0849469A2 (en) | 1998-06-24 |
EP0849469A3 true EP0849469A3 (en) | 1999-02-10 |
EP0849469B1 EP0849469B1 (en) | 2003-04-23 |
Family
ID=7816015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97120146A Expired - Lifetime EP0849469B1 (en) | 1996-12-21 | 1997-11-18 | Twin cylinder slurry pump with a pipe switch |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0849469B1 (en) |
DE (2) | DE19654023A1 (en) |
ES (1) | ES2195070T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19934452A1 (en) * | 1999-07-27 | 2001-02-01 | Putzmeister Ag | silo |
DE102004015181A1 (en) * | 2004-03-25 | 2005-10-13 | Putzmeister Ag | Material feed container for a slurry pump |
GB2416569A (en) | 2004-07-27 | 2006-02-01 | Clarke Uk Ltd | Method of and a pump for pumping drill cuttings |
CH704904B1 (en) | 2011-05-06 | 2014-08-29 | Bra Turbo Ing Ag | Apparatus and method for removal of material deposits from water bodies. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2614895A1 (en) * | 1976-04-07 | 1977-10-20 | Schlecht Karl | Twin cylinder reciprocating concrete pump - has conical distance piece between swinging discharge pipe and cylinder wear ring |
US4382752A (en) * | 1979-02-01 | 1983-05-10 | Karl Schlecht | Twin-cylinder pump, in particular for pumping thick liquids |
DE3414180A1 (en) * | 1984-04-14 | 1985-10-24 | Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren | Sealing device for abutting components which are at least approximately pipe-shaped, in particular for concrete mouldings |
EP0450392A1 (en) * | 1990-03-20 | 1991-10-09 | Peter J. Balsells | Coil spring with an elastomer having a hollow coil cross section |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1049648B (en) * | 1959-01-29 | |||
DD63238A (en) * | ||||
DE575348C (en) * | 1930-03-15 | 1933-04-27 | Hydrierwerke Akt Ges Deutsche | Process for improving the odor of wooden spirit oils |
DE1653456A1 (en) * | 1966-10-28 | 1971-04-15 | Alfred Heidt | Combined piston conveyor pump with additional compressor and compressed air flow channel, especially for mixed concrete and semi-liquid conveyed material, which consists of a mixture of solid and liquid material |
US3897088A (en) * | 1973-12-12 | 1975-07-29 | Amp Inc | Sealing boot |
DE7614221U1 (en) * | 1976-05-05 | 1976-10-07 | Fa. Paul Hammerstein, 2000 Hamburg | DEVICE FOR SEALING PLUG-IN CONNECTIONS OF PIPES |
CH600206A5 (en) * | 1976-05-18 | 1978-06-15 | Meister H & Co | |
FR2385011A1 (en) * | 1977-03-23 | 1978-10-20 | Joint Francais | COMPOSITE GASKET |
DE7910958U1 (en) * | 1979-04-14 | 1980-06-19 | Wibau Industrie Und Verwaltung Gmbh, 6466 Gruendau | TASK CONTAINER WITH FLANGE PROTECTION MADE OF ELASTIC MATERIAL AS COMPONENT OF MOBILE CONCRETE PUMPS |
US4310161A (en) * | 1979-06-15 | 1982-01-12 | Halliburton Services | Inflatable packer element |
DE3216057A1 (en) * | 1982-04-29 | 1983-11-03 | Siemens AG, 1000 Berlin und 8000 München | Pressure-compensating seal, in particular for cable fittings |
US4586718A (en) * | 1985-09-06 | 1986-05-06 | Crane Co. | Sealing assembly with floating gland means for rotatable shafts |
DE3918879A1 (en) * | 1989-06-09 | 1990-12-13 | Wolfgang Werner | Combined seal and expansion compensator - has one or more extensible and deformable hollow pieces each with one or more hollow cavities |
US5294133A (en) * | 1991-09-10 | 1994-03-15 | The United States Of America As Represented By The Secretary Of The Army | Fluid-filled O-ring for maintaining a seal under low temperature conditions |
-
1996
- 1996-12-21 DE DE19654023A patent/DE19654023A1/en not_active Withdrawn
-
1997
- 1997-11-18 EP EP97120146A patent/EP0849469B1/en not_active Expired - Lifetime
- 1997-11-18 ES ES97120146T patent/ES2195070T3/en not_active Expired - Lifetime
- 1997-11-18 DE DE59709903T patent/DE59709903D1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2614895A1 (en) * | 1976-04-07 | 1977-10-20 | Schlecht Karl | Twin cylinder reciprocating concrete pump - has conical distance piece between swinging discharge pipe and cylinder wear ring |
US4382752A (en) * | 1979-02-01 | 1983-05-10 | Karl Schlecht | Twin-cylinder pump, in particular for pumping thick liquids |
DE3414180A1 (en) * | 1984-04-14 | 1985-10-24 | Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren | Sealing device for abutting components which are at least approximately pipe-shaped, in particular for concrete mouldings |
EP0450392A1 (en) * | 1990-03-20 | 1991-10-09 | Peter J. Balsells | Coil spring with an elastomer having a hollow coil cross section |
Also Published As
Publication number | Publication date |
---|---|
EP0849469B1 (en) | 2003-04-23 |
DE19654023A1 (en) | 1998-06-25 |
EP0849469A2 (en) | 1998-06-24 |
DE59709903D1 (en) | 2003-05-28 |
ES2195070T3 (en) | 2003-12-01 |
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