EP0849469A3 - Twin cylinder slurry pump with a pipe switch - Google Patents

Twin cylinder slurry pump with a pipe switch Download PDF

Info

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
Application number
EP97120146A
Other languages
German (de)
French (fr)
Other versions
EP0849469B1 (en
EP0849469A2 (en
Inventor
Hartmut Dr. Benckert
Hellmut Dipl.-Ing. Hurr
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.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister 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 Putzmeister AG filed Critical Putzmeister AG
Publication of EP0849469A2 publication Critical patent/EP0849469A2/en
Publication of EP0849469A3 publication Critical patent/EP0849469A3/en
Application granted granted Critical
Publication of EP0849469B1 publication Critical patent/EP0849469B1/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
    • 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.

Figure 00000001
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.
Figure 00000001
EP97120146A 1996-12-21 1997-11-18 Twin cylinder slurry pump with a pipe switch Expired - Lifetime EP0849469B1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
EP0022851A1 (en) Twin-cylinder pump, in particular for pumping thick liquids.
DE102008035592A1 (en) Diaphragm pump for use in e.g. biotechnology field, has outlet chamber arranged concentrically to inlet chamber, where outlet chamber at its lower area exhibits outlet channel and inlet chamber exhibits centrically arranged inlet channel
EP1635094B1 (en) Valve
EP0849469A3 (en) Twin cylinder slurry pump with a pipe switch
DE10215311A1 (en) seal means
EP0217013A1 (en) Gas spring adjustable in length
DE6930659U (en) HIGH PRESSURE PISTON PUMP.
EP0798233A3 (en) Dispensing valve for pressurised fluids
EP1329644A3 (en) Adjusting element with cylinder
EP1022468A3 (en) Piston pump
DE3412594A1 (en) MECHANICAL SEAL
DE2211415A1 (en) Valve for pumps, compressors or the like
DE1725042C2 (en) Valve coupling for hose couplings carrying hydraulic fluid
DE3128539C2 (en) Roller hose seal for axially movable cylinder elements
EP1125654A3 (en) Mechanical tube expander
DE19854719B4 (en) piston pump
DE19611673A1 (en) Piston rod seal
EP0425567B1 (en) Pipe shunt for a two-cylinder pump for viscous fluids
DE102017219341A1 (en) piston compressor
DE202006012531U1 (en) Rotating passage, e.g. for jet blasting tool using fluid at high pressure, has fixed concentric sleeve at the end of the hollow shaft against the inflow and seal at the shaft holder with flat surfaces at the sealing and support rings
CN217463334U (en) Check valve and filter plate
DE102017010644A1 (en) filtering device
WO2009003785A2 (en) Pipe junction for two-cylinder viscous matter pumps
EP1288537A3 (en) Seal ring
DE10256044B4 (en) Device for the metered discharge of highly viscous or liquid material, in particular of adhesives

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19990417

AKX Designation fees paid

Free format text: DE ES FR GB IT

17Q First examination report despatched

Effective date: 20020418

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 59709903

Country of ref document: DE

Date of ref document: 20030528

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040126

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20041014

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051118

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20051118

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20071214

Year of fee payment: 11

Ref country code: DE

Payment date: 20071122

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20071121

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20071114

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: CJ

Ref country code: FR

Ref legal event code: CD

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081118

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090603

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20081119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081130