ATE46745T1 - HYDRAULIC CIRCUIT FOR PUMPS WITH RECIPROCATING PISTON. - Google Patents

HYDRAULIC CIRCUIT FOR PUMPS WITH RECIPROCATING PISTON.

Info

Publication number
ATE46745T1
ATE46745T1 AT84104810T AT84104810T ATE46745T1 AT E46745 T1 ATE46745 T1 AT E46745T1 AT 84104810 T AT84104810 T AT 84104810T AT 84104810 T AT84104810 T AT 84104810T AT E46745 T1 ATE46745 T1 AT E46745T1
Authority
AT
Austria
Prior art keywords
cylinders
pumps
hydraulic valves
hydraulic circuit
circuit
Prior art date
Application number
AT84104810T
Other languages
German (de)
Inventor
Alfredo Brandi
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
Application granted granted Critical
Publication of ATE46745T1 publication Critical patent/ATE46745T1/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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
    • F04B7/0233—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated a common distribution member forming a single discharge distributor for a plurality of pumping chambers
    • 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
    • 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
    • F04B9/109—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 plural pumping chambers
    • F04B9/117—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 plural pumping chambers the pumping members not being mechanically connected to each other
    • F04B9/1176—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 plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor
    • F04B9/1178—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 plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor the movement in the other direction being obtained by a hydraulic connection between the liquid motor cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

An open oleodynamic circuit with automatic sequence for the control of piston pumps, particularly of concrete pumps, wherein the stability of the hydraulic system is obtained in all working conditions and with any positioning of the cylinders, of the type comprising two pumping cylinders (1, 3), two cylinders (2, 4) for the control of a deviating valve, through which the pumping cylinders are alternately placed in communication with a delivery pipe and with a charging hopper, and hydraulic valves (5, 6) for controlling said cylinders. In this circuit, said hydraulic valves (5, 6) are controlled by means of auxiliary hydraulic valves (7, 8) acting as relays, which are piloted directly by the flow feeding the oleodynamic cylinders (1, 2, 3, 4) operating the pump, and which are meant to operate only when the end-of-stroke position has been reached.
AT84104810T 1984-06-05 1984-06-05 HYDRAULIC CIRCUIT FOR PUMPS WITH RECIPROCATING PISTON. ATE46745T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84104810A EP0167635B1 (en) 1984-06-05 1984-06-05 Hydraulic circuit for the control of reciprocating pistons pump

Publications (1)

Publication Number Publication Date
ATE46745T1 true ATE46745T1 (en) 1989-10-15

Family

ID=8191908

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84104810T ATE46745T1 (en) 1984-06-05 1984-06-05 HYDRAULIC CIRCUIT FOR PUMPS WITH RECIPROCATING PISTON.

Country Status (3)

Country Link
EP (1) EP0167635B1 (en)
AT (1) ATE46745T1 (en)
DE (1) DE3479911D1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19542258A1 (en) * 1995-11-13 1997-05-15 Putzmeister Maschf Method and device for controlling a two-cylinder thick matter pump
EP0931934A1 (en) * 1998-01-27 1999-07-28 Dosiertechnik und Pneumatik AG Dopag Pumping system for viscous materials
NO20013173L (en) * 2001-06-22 2002-12-23 Pevatec As high-pressure pump
ITUD20050045A1 (en) * 2005-03-29 2006-09-30 Stefano Baiardo HYDRAULIC CIRCUIT FOR A CONCRETE PUMPING GROUP
ES2329714T3 (en) * 2006-04-20 2009-11-30 Compagnia Italiana Forme Acciaio S.P.A. IMPROVED OPEN CIRCUIT OLEODYNAMIC SYSTEM TO OPERATE AND CONTROL A CONCRETE PISTON PUMP.
CN104196786B (en) * 2014-07-29 2017-06-20 徐州五洋科技股份有限公司 A kind of all-hydraulic control hydraulic system of pump of mining wet sprayer
CN104329306B (en) * 2014-10-31 2016-08-17 徐州徐工施维英机械有限公司 A kind of hydraulic control system, method and pump
US11891987B2 (en) 2018-12-14 2024-02-06 Schwing Gmbh Piston pump and method for operating a piston pump

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3327641A (en) * 1965-03-08 1967-06-27 Air Placement Equipment Co Inc Concrete pump
US3477380A (en) * 1968-01-03 1969-11-11 Jaeger Machine Co Electric control circuit and hydraulic system for concrete pumping apparatus
GB1480753A (en) * 1974-11-14 1977-07-27 Hydraulics Ltd A Hydraulically-operated devices
DE2731122A1 (en) * 1977-07-09 1979-01-25 Hausherr & Soehne Maschf Hydraulically actuated concrete pump - has sequence control and switch=over unit by hydraulic pilot operated valves via solenoid valves
DE2942560A1 (en) * 1979-10-20 1981-04-30 Karl Dipl.-Ing. 7000 Stuttgart Schlecht CONCRETE PUMP WITH HYDRAULICALLY RELEASED VALVE

Also Published As

Publication number Publication date
DE3479911D1 (en) 1989-11-02
EP0167635A1 (en) 1986-01-15
EP0167635B1 (en) 1989-09-27

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee