DE3479911D1 - Hydraulic circuit for the control of reciprocating pistons pump - Google Patents

Hydraulic circuit for the control of reciprocating pistons pump

Info

Publication number
DE3479911D1
DE3479911D1 DE8484104810T DE3479911T DE3479911D1 DE 3479911 D1 DE3479911 D1 DE 3479911D1 DE 8484104810 T DE8484104810 T DE 8484104810T DE 3479911 T DE3479911 T DE 3479911T DE 3479911 D1 DE3479911 D1 DE 3479911D1
Authority
DE
Germany
Prior art keywords
cylinders
control
hydraulic valves
hydraulic circuit
reciprocating pistons
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.)
Expired
Application number
DE8484104810T
Other languages
German (de)
Inventor
Alfredo Brandi
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.)
COMPAGNIA ITALIANA FORME ACCIAIO S P A
Original Assignee
COMPAGNIA ITALIANA FORME ACCIAIO S P A
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 COMPAGNIA ITALIANA FORME ACCIAIO S P A filed Critical COMPAGNIA ITALIANA FORME ACCIAIO S P A
Application granted granted Critical
Publication of DE3479911D1 publication Critical patent/DE3479911D1/en
Expired 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
    • F04B7/02—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

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.
DE8484104810T 1984-06-05 1984-06-05 Hydraulic circuit for the control of reciprocating pistons pump Expired DE3479911D1 (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
DE3479911D1 true DE3479911D1 (en) 1989-11-02

Family

ID=8191908

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484104810T Expired DE3479911D1 (en) 1984-06-05 1984-06-05 Hydraulic circuit for the control of reciprocating pistons pump

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
ATE434130T1 (en) * 2006-04-20 2009-07-15 Italiana Forme Acciaio OPEN CIRCUIT HYDRODYNAMIC SYSTEM FOR A PISTON CONCRETE 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
ATE46745T1 (en) 1989-10-15
EP0167635A1 (en) 1986-01-15
EP0167635B1 (en) 1989-09-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee