EP0212728A1 - Pumpeinrichtung - Google Patents

Pumpeinrichtung Download PDF

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Publication number
EP0212728A1
EP0212728A1 EP86201340A EP86201340A EP0212728A1 EP 0212728 A1 EP0212728 A1 EP 0212728A1 EP 86201340 A EP86201340 A EP 86201340A EP 86201340 A EP86201340 A EP 86201340A EP 0212728 A1 EP0212728 A1 EP 0212728A1
Authority
EP
European Patent Office
Prior art keywords
control mechanism
suction
cylinders
displacer
valves
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
EP86201340A
Other languages
English (en)
French (fr)
Other versions
EP0212728B1 (de
Inventor
Carolus H. Holthuis
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.)
Holthuis BV
Original Assignee
Holthuis BV
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 Holthuis BV filed Critical Holthuis BV
Priority to AT86201340T priority Critical patent/ATE55450T1/de
Publication of EP0212728A1 publication Critical patent/EP0212728A1/de
Application granted granted Critical
Publication of EP0212728B1 publication Critical patent/EP0212728B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
    • F04B11/0058—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons with piston speed control
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • 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
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
    • 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
    • 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
    • F04B9/1172—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 pump piston in the two directions being obtained by a double-acting piston liquid motor

Definitions

  • the invention relates to a pump device having at least three displacer cylinders of the piston-, plunger-, piston membrane or similar type placed in parallel, of which displacer members are driven by pistons in hydraulic cylinders driven by a drive medium supplied by a motor driven pump, and in which suction- and pressure valves are present which are connected to the displacer cylinders at their suction- and pressure sides respectively, which device is provided with a control mechanism that has been programmed so that in use the quantities delivered as well as taken in per unit of time have constant or substantially constant values.
  • pump device of this kind it is of importance that the quantity delivered per unit of time and the pressure furnished are as uniform as possible and thus that there are as little accelerations and decelerations of liquid masses as possible in the pressure duct as well as in the suction duct. If variations in quantity delivered and peaks in pressure can be avoided pulsation damping means are rendered superfluous totally or substantially. Then it becomes possible to apply pump device of this kind in those cases where such means can be used hardly or not at all such as at temperatures of over 100 degrees centigrade or at a very high viscosity it is also of interest that as a result of the non occurrence of pulsating means the duct systems are much less loaded dynamically.
  • a valve controlled by the control mechanism is present for a valve each of the hydraulic cylinders and that each of the displacer cylinders is provided with a recording device for the position of the displacer, the outgoing signal of which is carried to the control mechanism.
  • the suction- and pressure valves which have been connected to the displacer cylinders may take the form of non return valves.
  • these valves have been carried out as non return valves which can be controlled from the outside, whereas the control mechanism is capable of providing a control signal therefor.
  • valves are allowed a certain lapse of time for their opening or closure.
  • control mechanism is established so as to provide at the end of each suction- or pressure stroke of the displacers a period of standstill in which the valves have an opportunity to open or to close. This is of particular interest in cases where high viscosity liquids have to be pumped.
  • a preferred embodiment is characterized in that the control mechanism has been established so that the suction stroke is carried out by the displacers in an accelerated way and that before the beginning of the pressure stroke a precompression takes place. This is of particular interest if the liquids are compressible to such an extend that a uniform delivery during the pressure stroke is adversely influenced.
  • the displacer rods 8, 9 and 10 are driven by the pistons 19, 20 and 21 (fig. 2 and 3) which are located in cylinders 22, 23 and 24 and are driven therein by a drive medium that is supplied by a pump 25 which is driven by an electric motor 26.
  • a drive medium will be oil
  • an adjustable plunger pump may be chosen. The pump sucks the oil from a supply, in a reservoir 27, into which the oil also returns.
  • valves 28, 29 and 30 In the ducts from the pump 26 to the cylinders 22, 23 and 24 and form these cylinders to the reservoir 27 valves 28, 29 and 30 have been mounted which are controlled by an electronic control mechanism 31 established in such a way that the cylinders 22, 23 and 24 receive by way of the valves 28, 29 and 30 the correct amount of drive medium or can discharge this medium to induce the speeds to the displacers 5, 6, 7 which they require to provide total quantities delivered and sucked up which are as uniform as possible.
  • Each of the cylinders 1, 2, 3 is provided with a recording device 36, 37, 38 connected to the rods 8, 9 and for the position of the piston 5, 6 and 7 in these cylinders.
  • the outgoing signals of these devices are carried to the control mechanism 31.
  • control mechanism has been represented with its connections to cylinder 24 only in order to simplify the drawings. Identical connections exist with cylinders 22 and 23. From the control mechanism extend finally the connections 32 to the valves 11, 12 and 13 and 15, 16 and 17 in order to give the opening and closing commands to these valves.
  • the scheme in accordance with figure 2 represents the hydraulic system for the piston movements as represented in the figures 4 and 5.
  • FIG. has been given in the form of diagrams how the control mechanism 31 has to be established to obtain the piston movements desired.
  • these figures have been given the time on the horizontal axis and the piston speeds on the vertical axis.
  • These piston speeds are propartional to the quantities delivered per unit of time by the displacers 5, 6 and 7 as far as the parts of the diagrams are concerned which extend over the time axis and to the quantities sucked per unit of time for the parts below the time axis.
  • the curves for the pistons 19, 20 and 21 have been indicated here with the reference numerals for the pistons themselves.
  • precompression phases 34 are created which are used by the displacers to precompress the liquid sucked in prior to its discharge through the pressure valves. In this case the suction strokes are accellerated. As the precompression does not lead to delivery the total delivery of the pump device remains constant.
  • Belonging to this embodiment is the hydraulic system according to figure 3.
  • the return ducts 35 are carried through the valves 28, 29 and controlled by the control mechanism 31 so that the oil is not returned directly to the reservoir 27.
  • the cylinders are interconnected at their drive rod sides so that no direct return duct is required and one or two pressing cylinders may drive one or two sucking cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Eye Examination Apparatus (AREA)
EP86201340A 1985-08-06 1986-07-30 Pumpeinrichtung Expired - Lifetime EP0212728B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86201340T ATE55450T1 (de) 1985-08-06 1986-07-30 Pumpeinrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8502193 1985-08-06
NL8502193A NL8502193A (nl) 1985-08-06 1985-08-06 Pompinrichting.

Publications (2)

Publication Number Publication Date
EP0212728A1 true EP0212728A1 (de) 1987-03-04
EP0212728B1 EP0212728B1 (de) 1990-08-08

Family

ID=19846396

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201340A Expired - Lifetime EP0212728B1 (de) 1985-08-06 1986-07-30 Pumpeinrichtung

Country Status (4)

Country Link
EP (1) EP0212728B1 (de)
AT (1) ATE55450T1 (de)
DE (1) DE3673285D1 (de)
NL (1) NL8502193A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806502A1 (de) * 1988-03-01 1989-09-21 Karl Eickmann Hochdruckpumpe auch fuer nicht schmierendes fluid und fuer drucke von ueber tausend atmospheren
DE3933445A1 (de) * 1989-10-06 1991-04-18 Eickmann Karl Hochdruck pumpen aggregat
EP0431753A1 (de) * 1989-12-05 1991-06-12 Nippon Pillar Packing Co. Ltd. Pumpe mit hin- und hergehenden Kolben
DE4211015A1 (de) * 1992-04-02 1993-10-07 Webasto Thermosysteme Gmbh Zyklisch arbeitende Fluid-Fördervorrichtung
FR2721046A1 (fr) * 1994-06-08 1995-12-15 Cyril Sannassee Presse d'injection d'un produit destiné au traitement de sol.
DE19652298A1 (de) * 1996-12-16 1998-06-18 Rexroth Mannesmann Gmbh Hochdruckpumpenanordnung
WO2005034777A1 (de) * 2003-09-30 2005-04-21 Erbe Elektromedizin Gmbh Fördereinrichtung für sterile medien
CN100385126C (zh) * 2005-10-28 2008-04-30 三一重工股份有限公司 用于串联油缸的阀补油方法及其装置
CN101450002B (zh) * 2003-09-30 2012-01-11 爱尔伯电子医疗设备公司 无菌介质输送装置
ITPR20120089A1 (it) * 2012-12-21 2014-06-22 Gea mechanical equipment italia spa Omogeneizzatore ad alta pressione

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638083A1 (de) * 1996-09-19 1998-03-26 Karl Eickmann Hochdruck-Aggregat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1500511B2 (de) * 1964-11-25 1972-11-02 Töyoda Machine Works, Ltd., Kariya, Aichi (Japan) Hydrostatisches Getriebe, insbesondere für Werkzeugmaschinen
US4527954A (en) * 1983-01-14 1985-07-09 Halliburton Company Pumping apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1500511B2 (de) * 1964-11-25 1972-11-02 Töyoda Machine Works, Ltd., Kariya, Aichi (Japan) Hydrostatisches Getriebe, insbesondere für Werkzeugmaschinen
US4527954A (en) * 1983-01-14 1985-07-09 Halliburton Company Pumping apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 8, no. 132, 20th June 1984, page 35 M 303; & JP-A-59 32 681 (HITACHI SEISAKUSHO K.K.) 22-02-1984 *
PATENTS ABSTRACTS OF JAPAN, vol. 8, no. 224, 13th October 1984, page 55 M 331; & JP-A-59 105 977 (HITACHI SEISAKUSHO K.K.) 19-06-1984 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806502A1 (de) * 1988-03-01 1989-09-21 Karl Eickmann Hochdruckpumpe auch fuer nicht schmierendes fluid und fuer drucke von ueber tausend atmospheren
DE3933445A1 (de) * 1989-10-06 1991-04-18 Eickmann Karl Hochdruck pumpen aggregat
EP0431753A1 (de) * 1989-12-05 1991-06-12 Nippon Pillar Packing Co. Ltd. Pumpe mit hin- und hergehenden Kolben
DE4211015A1 (de) * 1992-04-02 1993-10-07 Webasto Thermosysteme Gmbh Zyklisch arbeitende Fluid-Fördervorrichtung
FR2721046A1 (fr) * 1994-06-08 1995-12-15 Cyril Sannassee Presse d'injection d'un produit destiné au traitement de sol.
DE19652298A1 (de) * 1996-12-16 1998-06-18 Rexroth Mannesmann Gmbh Hochdruckpumpenanordnung
CN101450002B (zh) * 2003-09-30 2012-01-11 爱尔伯电子医疗设备公司 无菌介质输送装置
WO2005034777A1 (de) * 2003-09-30 2005-04-21 Erbe Elektromedizin Gmbh Fördereinrichtung für sterile medien
JP2007507261A (ja) * 2003-09-30 2007-03-29 エルベ エレクトロメディツィン ゲーエムベーハー 無菌媒体の輸送装置
JP4755098B2 (ja) * 2003-09-30 2011-08-24 エルベ エレクトロメディツィン ゲーエムベーハー 無菌媒体の輸送装置
US8083493B2 (en) 2003-09-30 2011-12-27 Erbe Elektromedizin Gmbh Transport device for sterile media
CN100385126C (zh) * 2005-10-28 2008-04-30 三一重工股份有限公司 用于串联油缸的阀补油方法及其装置
ITPR20120089A1 (it) * 2012-12-21 2014-06-22 Gea mechanical equipment italia spa Omogeneizzatore ad alta pressione
WO2014097075A1 (en) * 2012-12-21 2014-06-26 Gea Mechanical Equipment Italia S.P.A. High-pressure homogenizer
CN104884798A (zh) * 2012-12-21 2015-09-02 Gea机械设备意大利股份公司 高压均质机
US9901889B2 (en) 2012-12-21 2018-02-27 Gea Mechanical Equipment Italia S.P.A. High-pressure homogenizer

Also Published As

Publication number Publication date
DE3673285D1 (de) 1990-09-13
EP0212728B1 (de) 1990-08-08
ATE55450T1 (de) 1990-08-15
NL8502193A (nl) 1987-03-02

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