EP0389785A3 - Two-cylinder-slurrypump with piston-accumulator - Google Patents

Two-cylinder-slurrypump with piston-accumulator Download PDF

Info

Publication number
EP0389785A3
EP0389785A3 EP19900103245 EP90103245A EP0389785A3 EP 0389785 A3 EP0389785 A3 EP 0389785A3 EP 19900103245 EP19900103245 EP 19900103245 EP 90103245 A EP90103245 A EP 90103245A EP 0389785 A3 EP0389785 A3 EP 0389785A3
Authority
EP
European Patent Office
Prior art keywords
accumulator
piston
pumping
cylinder
limit positions
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
EP19900103245
Other languages
German (de)
French (fr)
Other versions
EP0389785B1 (en
EP0389785A2 (en
Inventor
Friedrich Dipl.-Ing. Schwing
Wolfgang Merten
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.)
Friedrich Wilhelm Schwing GmbH
Original Assignee
Friedrich Wilhelm Schwing GmbH
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 Friedrich Wilhelm Schwing GmbH filed Critical Friedrich Wilhelm Schwing GmbH
Publication of EP0389785A2 publication Critical patent/EP0389785A2/en
Publication of EP0389785A3 publication Critical patent/EP0389785A3/en
Application granted granted Critical
Publication of EP0389785B1 publication Critical patent/EP0389785B1/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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Refuse Collection And Transfer (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Dram (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Abstract

On a two-cylinder slurry pump with piston accumulator which is filled during pumping of the slurry by the pumping cylinders and emptied by the hydraulically controlled accumulator piston between the strokes of the pumping pistons into the pumping pipeline in order to prevent the drop in pressure and incorrect delivery quantity in the pumping pipeline, it is proposed according to the invention that a bilaterally hydraulically actuatable working piston (8) serve for hydraulic control (2) of the accumulator piston (10), which working piston is controlled with the pumping cylinders and whose limit positions are fixed on the accumulator drive cylinder (7) with the limit positions of the accumulator piston (10) when the accumulator cylinder (4) is fully emptied and when it is filled. <IMAGE>
EP90103245A 1989-03-29 1990-02-20 Two-cylinder-slurrypump with piston-accumulator Expired - Lifetime EP0389785B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3910189A DE3910189A1 (en) 1989-03-29 1989-03-29 TWO-CYLINDER FUEL PUMP WITH PISTON ACCUMULATOR
DE3910189 1989-03-29

Publications (3)

Publication Number Publication Date
EP0389785A2 EP0389785A2 (en) 1990-10-03
EP0389785A3 true EP0389785A3 (en) 1991-01-16
EP0389785B1 EP0389785B1 (en) 1994-09-14

Family

ID=6377396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103245A Expired - Lifetime EP0389785B1 (en) 1989-03-29 1990-02-20 Two-cylinder-slurrypump with piston-accumulator

Country Status (12)

Country Link
EP (1) EP0389785B1 (en)
JP (1) JPH02283872A (en)
KR (1) KR900014753A (en)
AT (1) ATE111564T1 (en)
AU (1) AU633550B2 (en)
CA (1) CA2013356A1 (en)
DD (1) DD296992A5 (en)
DE (2) DE3910189A1 (en)
ES (1) ES2063180T3 (en)
FI (1) FI901568A0 (en)
RU (1) RU2045686C1 (en)
ZA (1) ZA902341B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04134673U (en) * 1991-06-07 1992-12-15 株式会社フジタ Concrete pumping pressure fluctuation prevention device
DE4224162A1 (en) * 1992-07-22 1994-01-27 Korthaus Ernst Concrete distribution system
DE4336087A1 (en) * 1993-10-22 1995-04-27 Korthaus Ernst Thick-matter accumulator
US7841849B2 (en) 2005-11-04 2010-11-30 University Of Southern California Dry material transport and extrusion
US8308470B2 (en) 2005-11-04 2012-11-13 University Of Southern California Extrusion of cementitious material with different curing rates
MX2008005842A (en) * 2005-11-04 2008-09-12 Univ Southern California Material delivery system using decoupling accumulator.
CN102094779B (en) * 2010-12-28 2012-01-04 长沙中联重工科技发展股份有限公司 Concrete pump and method for adjusting driving pressure value for swinging actuator in concrete pump
ES2704235T3 (en) * 2013-10-29 2019-03-15 Thermtech Holdings As System to supply and pump less pumpable material in a conduit line
DE102014212021A1 (en) * 2014-06-23 2015-12-24 Putzmeister Solid Pumps Gmbh Apparatus and method for damping pressure fluctuations in the delivery line of a slurry pump
CN110821775B (en) * 2019-09-27 2021-10-15 日昌升建筑新材料设计研究院有限公司 Multi-cylinder parallel type mine tailing slurry hydraulic pumping system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT234514B (en) * 1961-08-17 1964-07-10 Martin Sebastiani Thick matter or mortar pump
DE2611944A1 (en) * 1975-05-05 1976-11-18 Angel Manuel Caban CONCRETE PUMP
GB2119865A (en) * 1982-03-27 1983-11-23 John Harbridge Piston pump or transformer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2052583A1 (en) * 1970-10-27 1972-05-04 Bors, Heinz J., Campione (Schweiz) Device for conveying viscous substances, especially concrete, mortar and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT234514B (en) * 1961-08-17 1964-07-10 Martin Sebastiani Thick matter or mortar pump
DE2611944A1 (en) * 1975-05-05 1976-11-18 Angel Manuel Caban CONCRETE PUMP
GB2119865A (en) * 1982-03-27 1983-11-23 John Harbridge Piston pump or transformer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, unexamined applications, Sektion M, Band 4, Nr. 132, September 17, 1980 THE PATENT OFFICE JAPANESE GOVERNMENT Seite 45 M 32; JP-A-55 087 867 ( MITSUBISHI ) *

Also Published As

Publication number Publication date
ES2063180T3 (en) 1995-01-01
DE3910189A1 (en) 1990-10-04
DD296992A5 (en) 1991-12-19
JPH02283872A (en) 1990-11-21
ZA902341B (en) 1990-12-28
FI901568A0 (en) 1990-03-29
RU2045686C1 (en) 1995-10-10
ATE111564T1 (en) 1994-09-15
AU633550B2 (en) 1993-02-04
EP0389785B1 (en) 1994-09-14
AU5232990A (en) 1990-10-04
KR900014753A (en) 1990-10-24
CA2013356A1 (en) 1990-09-29
EP0389785A2 (en) 1990-10-03
DE59007097D1 (en) 1994-10-20

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