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PT971126E - OPERATING THE VALVE S OF A BETAO PUMP BEFORE COMPLETING THE PISTAO COURSE - Google Patents

OPERATING THE VALVE S OF A BETAO PUMP BEFORE COMPLETING THE PISTAO COURSE

Info

Publication number
PT971126E
PT971126E PT99113573T PT99113573T PT971126E PT 971126 E PT971126 E PT 971126E PT 99113573 T PT99113573 T PT 99113573T PT 99113573 T PT99113573 T PT 99113573T PT 971126 E PT971126 E PT 971126E
Authority
PT
Portugal
Prior art keywords
valve
cylinders
pistao
betao
course
Prior art date
Application number
PT99113573T
Other languages
Portuguese (pt)
Inventor
Moretti Giorgio
Cipolla Davide
Arpini Roberto
Original Assignee
Italiana Forme Acciaio
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 Italiana Forme Acciaio filed Critical Italiana Forme Acciaio
Publication of PT971126E publication Critical patent/PT971126E/en

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
    • F04B2201/00—Pump parameters
    • F04B2201/02—Piston parameters
    • F04B2201/0207—Number of pumping strokes in unit time

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention concerns a concrete pump, of the type comprising a pair of pumping cylinders alternatively operating under the control of a backflow hydraulic pump - to draw concrete from a hopper and feed it, by way of a rocking valve (S-valve), into the transport and delivery duct - wherein said cylinders are provided with stops to control the advance of the starting movements of the S-valve and wherein the motion of the pistons in the cylinders is reversed in respect of the moment in which said pistons reach the top dead center. According to the invention, said stops are located in the position for the most efficient working with the highest number of pumping cycles per minute, and electronic means are provided to set said advance time, by delaying the starting movement of the S-valve and the reversal of the backflow hydraulic pump according to the actual number of pumping cycles per minute. <IMAGE>
PT99113573T 1998-07-09 1999-07-08 OPERATING THE VALVE S OF A BETAO PUMP BEFORE COMPLETING THE PISTAO COURSE PT971126E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT98MI001572A ITMI981572A1 (en) 1998-07-09 1998-07-09 CONCRETE PUMP WITH MEANS OF REGULATION OF THE ADVANCE OF THE MOVEMENTS OF THE S-VALVE OF THE PUMPING GROUP WITH RESPECT TO

Publications (1)

Publication Number Publication Date
PT971126E true PT971126E (en) 2006-09-29

Family

ID=11380404

Family Applications (1)

Application Number Title Priority Date Filing Date
PT99113573T PT971126E (en) 1998-07-09 1999-07-08 OPERATING THE VALVE S OF A BETAO PUMP BEFORE COMPLETING THE PISTAO COURSE

Country Status (8)

Country Link
EP (1) EP0971126B1 (en)
AT (1) ATE325272T1 (en)
CY (1) CY1105103T1 (en)
DE (1) DE69931106T2 (en)
DK (1) DK0971126T3 (en)
ES (1) ES2262272T3 (en)
IT (1) ITMI981572A1 (en)
PT (1) PT971126E (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4533300A (en) * 1979-06-11 1985-08-06 Robert E. Westerlund High pressure pumping apparatus for semi-fluid material
DE4035518C2 (en) * 1990-11-08 1994-06-09 Putzmeister Maschf Method and arrangement for determining the volume flow of conveyed material transported by means of a piston-type nitrogen pump
DE9218858U1 (en) * 1991-05-16 1995-12-07 Sandoz-Patent-GmbH, 79539 Lörrach Double piston pump
DE4127277A1 (en) * 1991-08-17 1993-02-18 Putzmeister Maschf HYDRAULIC CONTROL DEVICE FOR A FUEL PUMP
DE59303049D1 (en) * 1992-03-21 1996-08-01 Schwing Gmbh F Slurry pump

Also Published As

Publication number Publication date
DE69931106T2 (en) 2006-11-16
EP0971126A1 (en) 2000-01-12
DE69931106D1 (en) 2006-06-08
EP0971126B1 (en) 2006-05-03
CY1105103T1 (en) 2009-11-04
ITMI981572A1 (en) 2000-01-09
ATE325272T1 (en) 2006-06-15
DK0971126T3 (en) 2006-09-04
ES2262272T3 (en) 2006-11-16

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