US20070274850A1 - Drive Device for a Dual-Cylinder Slurry Pump and Method for Operating Said Pump - Google Patents

Drive Device for a Dual-Cylinder Slurry Pump and Method for Operating Said Pump Download PDF

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Publication number
US20070274850A1
US20070274850A1 US11/569,497 US56949705A US2007274850A1 US 20070274850 A1 US20070274850 A1 US 20070274850A1 US 56949705 A US56949705 A US 56949705A US 2007274850 A1 US2007274850 A1 US 2007274850A1
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US
United States
Prior art keywords
drive
cylinder
pump
cylinders
fact
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.)
Abandoned
Application number
US11/569,497
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English (en)
Inventor
Georg Muller
Joseph Schnittker
Manfred Schwarz
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 US20070274850A1 publication Critical patent/US20070274850A1/en
Abandoned legal-status Critical Current

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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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0019—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers
    • F04B7/0026—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having an oscillating movement
    • 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
    • F04B15/023—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 supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
    • 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
    • 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
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/09—Motor parameters of linear hydraulic motors
    • F04B2203/0903—Position of the driving piston

Definitions

  • the present invention relates to a method for operating a dual-cylinder slurry pump and a drive device for a dual-cylinder slurry pump in accordance with the generic part of claim 1 and the generic part of claim 8 .
  • Dual-cylinder slurry pumps are used, for example, to pump concrete.
  • the concrete is pumped over substantial heights and distances, e.g., via corresponding distributing masts.
  • the delivery cylinders are connected via a switch, especially a pipe switch, to a common delivery line, with the switch alternately connecting the one or other delivery cylinder to the delivery line, such that overall the flow of slurry or concrete is virtually continuous.
  • FIG. 2 shows an hydraulic drive for a dual-cylinder slurry pump with a pipe switch.
  • FIG. 2 shows an hydraulic drive for a dual-cylinder slurry pump with a pipe switch.
  • This is a block diagram of a so-called single-circuit system in which the drive cylinders 1 , 2 of the delivery cylinders FR, FL and the actuator cylinder SZ of the pipe switch are supplied with hydraulic oil by means of one supply device only or in which the working pressure is generated.
  • This sole supply device has two pumps P 1 and P 2 , which are connected via oil lines L 1 and L 2 to the switching block 3 , which, depending on the operating status, makes the oil delivered by pumps P 1 and P 2 available to the drive cylinder 1 or the drive cylinder 2 for the delivery cylinders FR and FL via lines L 4 or, via further lines L 4 a , to the actuator or swiveling cylinder SZ of the pipe switch RW.
  • a so-called dual-circuit system has two independent pump devices, each having at least one pump P 1 and P 2 . This means it is possible to actuate the delivery cylinders and the actuator cylinder(s) in parallel time to shorten the interruption in pumping.
  • the invention draws on the knowledge that when a fluid, especially an hydraulic oil, is used to drive the drive cylinders or delivery cylinders of a dual-cylinder slurry pump, full drive power is no longer needed toward the end of the piston displacement, that is at the end of a stroke.
  • a fluid especially an hydraulic oil
  • the superfluous drive power it is possible to use the superfluous drive power to shorten the switching time in such a way that the superfluous drive power can already be used for the actuation of the switch, especially for the drive of a swiveling or actuator cylinder for a pipe switch. Consequently, it is no longer necessary to wait for the stroke in the drive or delivery cylinder to finish, but rather the switching operation and thus the actuation of the pipe switch can be initiated already before the end of a stroke.
  • the invention provides for monitoring or determining the position of the piston in the drive cylinder or delivery cylinder, and for locating it, at least in a certain position shortly before it reaches the final position, such that, starting with this information, some of the fluid volume flow, preferably hydraulic oil volume flow, can be made available for actuation of the actuator or swiveling cylinder of the switch.
  • the device employed for the determination may be of mechanical, electrical or hydraulic type, with the last-mentioned especially suitable when overall control over the drive proceeds largely by means of a fluid or hydraulic oil. In that case, it is a simple matter to use corresponding switching valves that are activated via known hydraulic control lines.
  • a corresponding device for locating the piston position of the actuator cylinder of the pipe switch may be provided in order that this information may be used for the switching operation.
  • the hydraulic switch may be constructed such that two pump devices are used for providing a corresponding fluid stream or operating pressure, which said pump devices, in a manner comparable to the dual-circuit system, are used primarily independently for the drive of the drive cylinders on one hand and for the drive of the actuator or swiveling cylinder for the switch on the other.
  • the two independent pump devices may be combined with each other in a manner such that, during the stroke of the drive cylinder or the delivery cylinder, the second pump device makes its capacity available for the drive or delivery cylinder, whereas, shortly before the switching operation, the second pump device is used exclusively for actuation of the actuator or swiveling cylinder of the switch. In this way, it is possible to use the pump or pump capacity of the drive effectively—and to use components of lower capacity.
  • the drive is designed such that the operating pressure, especially of the second pump device, is available at the actuator or swiveling cylinder during the entire operation.
  • Diversion of the fluid volume flow may be realized simply by a corresponding switching valve, so that the overall switching outlay can be kept very low.
  • FIG. 1 a block diagram of the drive device of the invention
  • FIG. 2 a block diagram of a known single-circuit system
  • FIG. 3 a block diagram of a known dual-circuit system.
  • FIG. 1 shows a block diagram of an hydraulic drive of a dual-cylinder slurry pump with a first drive cylinder 1 and a second drive cylinder 2 , which are connected via the corresponding pistons to a first delivery cylinder FR and a second delivery cylinder FL.
  • the delivery cylinders FL and FR are connected via a pipe switch RW to a common delivery line, such that alternating strokes of the delivery cylinders FL and FR provide almost continuous pump activity for the slurry.
  • the pipe switch RW must be brought via an actuator or swiveling cylinder SZ into a connecting position such that it alternates between the first delivery cylinder FR and common delivery line and the second delivery cylinder FL and common delivery line.
  • the hydraulic drive is supplied by two pump devices P 1 and P 2 , each of which may have one or more pumps connected in parallel.
  • the block diagram shows only one pump for each pump device.
  • the pump devices P 1 and P 2 are connected via the supply lines L 1 and L 2 to the control block 3 in which the switching valves 3 . 1 and 3 . 2 are accommodated, which in turn are connected to hydraulic lines L 4 and L 4 a.
  • a link line with switching valve 6 is provided, such that hydraulic oil, which in supply line L 1 is pumped through the first pump device P 1 , can be pumped into the second supply line L 2 .
  • the switching valve 6 especially ensures that hydraulic oil, which is pumped from the second pump device P 2 in the supply line L 2 , can pass into first supply line L 1 to maintain a sufficient oil flow to actuate the drive cylinders 1 and 2 .
  • Switching valve 3 . 2 then makes the hydraulic oil in the supply line L 1 alternately available to the first drive cylinder 1 and the second drive cylinder 2 via the supply lines L 4 in order that the delivery cylinders FR and FL may be actuated via said drive cylinders.
  • the oil returns via line L 9 .
  • Switching valves VFR and VFL for controlling the alternating stroke displacement of the drive cylinders 1 and 2 are provided at drive cylinders 1 and 2 . Because of the alternating stroke displacement of the drive cylinders 1 and 2 , these are coupled hydraulically to each other via the control lines SL 5 , SL 6 , SL 7 and SL 9 .
  • the switching values VFR and VFL additionally form so-called proximity switches by means of which the piston position in the drive cylinders 1 and 2 can be determined. Simultaneously, through the corresponding pistons of the piston drive in the drive cylinders 1 and 2 , the control lines SL 8 and SL 10 connected to the switching valves VFR and VFL are pressurized accordingly, which in turn correspondingly drive the switching valves 3 . 1 and 3 . 2 in the control block 3 , or the switching valve 6 .
  • switching valve 3 . 1 supplies the actuator cylinder SZ with corresponding hydraulic oil or pressure through the second pump device P 2 and the supply lines L 2 and L 4 a.
  • the switching valve 3 . 1 and the switching valve 6 are correspondingly switched via the switching valve 6 .
  • the switching valve 6 blocks the connecting line between the supply lines L 1 and L 2 such that oil can no longer flow from the supply line L 2 to the supply line L 1 and thus supply the drive cylinders 1 and 2 .
  • the full pump capacity of the second pump device P 2 is made available to the swiveling cylinder SZ, with the switching valve VSZ for controlling the actuator or swiveling cylinder SZ also being actuated through the corresponding hydraulic control lines SL 18 amd SL 19 , or sending corresponding control signals to the switching valve 6 .
  • the use of the switching valve 6 enables the oil volume flow, which is normally also used by the pump device P 2 to actuate the drive cylinders 1 and 2 and which is no longer absolutely necessary in the final displacement of the respective drive cylinders 1 and 2 , to be used earlier to actuate the actuator cylinder such that an interruption to the pumping of the slurry pump is reduced.
  • the second pump device P 2 is directly connected via the supply line L 2 to the switching valve 3 . 1 or via the hydraulic lines L 4 a to the swiveling or actuator cylinder SZ, the operating pressure of the second pump device P 2 is immediately available to the swiveling cylinder SZ during the entire operation.
  • the embodiment shown is thus an advantageous combination of a single-circuit and a dual-circuit system in which the pump capacity of the second pump device is variably used both for the actuation of the drive cylinders 1 and 2 and of the swiveling or actuator cylinder SZ.
  • the advantageous possibility thereby rises of making some of the oil volume flow available for the actuation of the actuator or swiveling cylinder of the pipe switch in order that any interruption of the pump flow may be shortened to a minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Jet Pumps And Other Pumps (AREA)
US11/569,497 2004-05-27 2005-04-18 Drive Device for a Dual-Cylinder Slurry Pump and Method for Operating Said Pump Abandoned US20070274850A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004025910.0 2004-05-27
DE102004025910A DE102004025910B4 (de) 2004-05-27 2004-05-27 Antriebseinrichtung für eine Zweizylinderdickstoffpumpe und Verfahren zum Betrieb derselben
PCT/EP2005/004113 WO2005119057A1 (de) 2004-05-27 2005-04-18 Antriebseinrichtung für eine zweizylinderdickstoffpumpe und verfahren zum betrieb derselben

Publications (1)

Publication Number Publication Date
US20070274850A1 true US20070274850A1 (en) 2007-11-29

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ID=34965057

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/569,497 Abandoned US20070274850A1 (en) 2004-05-27 2005-04-18 Drive Device for a Dual-Cylinder Slurry Pump and Method for Operating Said Pump

Country Status (13)

Country Link
US (1) US20070274850A1 (zh)
EP (1) EP1749152B1 (zh)
JP (1) JP2008500483A (zh)
KR (1) KR20070026538A (zh)
CN (1) CN1961152B (zh)
AT (1) ATE397726T1 (zh)
AU (1) AU2005250538A1 (zh)
BR (1) BRPI0511335A (zh)
CA (1) CA2567445A1 (zh)
DE (2) DE102004025910B4 (zh)
ES (1) ES2289973T3 (zh)
RU (1) RU2358154C2 (zh)
WO (1) WO2005119057A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130004341A1 (en) * 2010-03-16 2013-01-03 Sany Heavy Industry Co., Ltd. Concrete pumping structure and control method thereof
US10900302B2 (en) 2018-07-27 2021-01-26 Country Landscapes & Tree Service, LLC Directional drilling systems, apparatuses, and methods
CN115492391A (zh) * 2021-06-18 2022-12-20 润弘精密工程事业股份有限公司 混凝土泵送输送装置和其方法
CN115492391B (zh) * 2021-06-18 2024-05-24 润弘精密工程事业股份有限公司 混凝土泵送输送装置和其方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3232057B1 (en) * 2016-04-11 2018-06-13 Epiroc Rock Drills Aktiebolag Method for transmitting or conveying fluid or semi-fluid materials by means of a double piston pump and double piston pump therefor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804556A (en) * 1972-09-28 1974-04-16 Dow Chemical Co Slurry pump
US4569642A (en) * 1982-01-22 1986-02-11 Dwyer Anthony F Slurry pump
US5222872A (en) * 1990-09-19 1993-06-29 Paul Pleiger Maschinenfabrik Gmbh & Co. Kg Control system for piston pumps
US5336052A (en) * 1993-04-28 1994-08-09 Abel Pumpen Gmbh & Co. Kg Viscous material pump
US5993181A (en) * 1995-02-07 1999-11-30 Gerhard Hudelmaier Process and device for feeding concrete or other thick materials

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243738A1 (de) * 1982-11-26 1984-05-30 Karl Dipl.-Ing. 7000 Stuttgart Schlecht Hydro-umsteuerung bei zweizylinder-kolbenpumpe
DE3814824A1 (de) * 1988-05-02 1989-11-16 Putzmeister Maschf Steuerungsanordnung fuer eine zweizylinder-dickstoffpumpe
DE4215403C2 (de) * 1991-05-16 2000-10-19 Mbt Holding Ag Zuerich Doppelkolbenpumpe zum Fördern von flüssigen Materialien, insbesondere von Beton oder Mörtel
DE4208754A1 (de) * 1992-03-19 1993-09-23 Schwing Gmbh F Dickstoffpumpe mit foerderzylindern, insbesondere zweizylinderbetonpumpe
DE9217574U1 (zh) * 1992-12-23 1993-05-27 Langerbein-Scharf Gmbh & Co. Kg, 4700 Hamm, De
DE19531358A1 (de) * 1995-08-25 1997-02-27 Gerhard Dr Hudelmaier Dickstoffpumpe, insbesondere zum Fördern von Beton
DE19542258A1 (de) * 1995-11-13 1997-05-15 Putzmeister Maschf Verfahren und Vorrichtung zur Steuerung einer Zweizylinder-Dickstoffpumpe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3804556A (en) * 1972-09-28 1974-04-16 Dow Chemical Co Slurry pump
US4569642A (en) * 1982-01-22 1986-02-11 Dwyer Anthony F Slurry pump
US5222872A (en) * 1990-09-19 1993-06-29 Paul Pleiger Maschinenfabrik Gmbh & Co. Kg Control system for piston pumps
US5336052A (en) * 1993-04-28 1994-08-09 Abel Pumpen Gmbh & Co. Kg Viscous material pump
US5993181A (en) * 1995-02-07 1999-11-30 Gerhard Hudelmaier Process and device for feeding concrete or other thick materials

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130004341A1 (en) * 2010-03-16 2013-01-03 Sany Heavy Industry Co., Ltd. Concrete pumping structure and control method thereof
US9322398B2 (en) * 2010-03-16 2016-04-26 Hunan Sany Intelligent Control Equipment Co., Ltd. Concrete pumping structure and control method thereof
US10900302B2 (en) 2018-07-27 2021-01-26 Country Landscapes & Tree Service, LLC Directional drilling systems, apparatuses, and methods
CN115492391A (zh) * 2021-06-18 2022-12-20 润弘精密工程事业股份有限公司 混凝土泵送输送装置和其方法
CN115492391B (zh) * 2021-06-18 2024-05-24 润弘精密工程事业股份有限公司 混凝土泵送输送装置和其方法

Also Published As

Publication number Publication date
CN1961152B (zh) 2010-12-15
WO2005119057A1 (de) 2005-12-15
DE102004025910A1 (de) 2005-12-22
AU2005250538A1 (en) 2005-12-15
JP2008500483A (ja) 2008-01-10
ES2289973T3 (es) 2008-12-01
ATE397726T1 (de) 2008-06-15
RU2006140233A (ru) 2008-05-20
ES2289973T1 (es) 2008-02-16
CA2567445A1 (en) 2005-12-15
DE102004025910B4 (de) 2009-05-20
RU2358154C2 (ru) 2009-06-10
EP1749152B1 (de) 2008-06-04
CN1961152A (zh) 2007-05-09
BRPI0511335A (pt) 2007-12-04
DE502005004346D1 (de) 2008-07-17
EP1749152A1 (de) 2007-02-07
KR20070026538A (ko) 2007-03-08

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