EP0197402A2 - Dispositif pour transporter une suspension de liquide épais et procédé opérationnel - Google Patents

Dispositif pour transporter une suspension de liquide épais et procédé opérationnel Download PDF

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Publication number
EP0197402A2
EP0197402A2 EP86103935A EP86103935A EP0197402A2 EP 0197402 A2 EP0197402 A2 EP 0197402A2 EP 86103935 A EP86103935 A EP 86103935A EP 86103935 A EP86103935 A EP 86103935A EP 0197402 A2 EP0197402 A2 EP 0197402A2
Authority
EP
European Patent Office
Prior art keywords
pumps
cylinder
delivery
cycle
thick matter
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
EP86103935A
Other languages
German (de)
English (en)
Other versions
EP0197402A3 (en
EP0197402B1 (fr
Inventor
Klaus Dipl.-Ing. Janssen
Helmut Dipl.-Ing. Kämmerer
Helmut Dipl.-Ing. Renetzeder
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.)
Preussag AG
Preussag AG Metall
Original Assignee
Preussag AG
Preussag AG Metall
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 Preussag AG, Preussag AG Metall filed Critical Preussag AG
Priority to AT86103935T priority Critical patent/ATE53635T1/de
Publication of EP0197402A2 publication Critical patent/EP0197402A2/fr
Publication of EP0197402A3 publication Critical patent/EP0197402A3/de
Application granted granted Critical
Publication of EP0197402B1 publication Critical patent/EP0197402B1/fr
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
    • 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

Definitions

  • the invention relates to a device for conveying thick matter suspensions with two-cylinder pumps, the cylinders of which can be alternately connected to the inflow of the thick matter suspension and the pressure line via a slide, and to a method for operating such a device.
  • These two-cylinder or twin-piston pumps which are also known under the name of concrete pumps, are long-stroke piston pumps with hydraulic drive, whereby the respective working cylinder is alternately connected to the pressure delivery line and the cylinder head opening by means of a slide element which is arranged in the region of the cylinder heads of the counter cylinder is released for the suction stroke.
  • Such a two-cylinder pump is described, for example, in DOS 21 53 204, in which the cylinder is alternately designed with a pressure or suction line as a swivel tube, so that both pressure line and suction line are common to both cylinders.
  • the delivery pistons of the respective cylinders are driven hydraulically or, as is also known from DAS 21 06 713, via a pull rope.
  • twin piston pumps are also used in mining, for example for pumping backfills, for example floating mountains from ore processing for backfilling of underground spaces.
  • a disadvantage is the fact that the masses to be delivered in the delivery line, which are only to be pumped under high pump pressure, have to be started again after each work interruption, ie after each slide actuation, and accelerated to the conveying speed.
  • the start-up pressure exceeds the pressure required for the actual conveying quite considerably, so that the installed capacity must be oversized in such an order of magnitude and so again excessive energy consumption occurs.
  • the working cycle of a pump cylinder is such; two-cylinder piston pump from the delivery stroke, the shifting into the suction position, the suction stroke and the shifting into the delivery position, i.e. from four functions, three of which represent an interruption of the delivery process.
  • a conventional two-cylinder piston pump allows the two cylinders to perform suction and delivery strokes alternately, so that delivery takes place during the duration of the two functions during the entire cycle duration of the four functions, but this is interrupted each time the slide is actuated.
  • the object of the present invention is therefore to largely eliminate the disadvantages of the two-cylinder piston pump described above when pumping highly consistent sludges, which result in the alternating braking and acceleration of the flow and the resulting load on the entire device and system, so that a Device is obtained that delivers a continuous flow of material to be conveyed, represents a lower load on the entire system and has a lower energy requirement.
  • This object is achieved according to the invention in that two two-cylinder pumps are connected with their pressure lines via a rotary valve to a common pressure line, the second two-cylinder piston pump being operated at a time delayed by a quarter cycle in such a way that a total of four delivery cycles are carried out in a complete working cycle occur.
  • twin piston pumps of the type described in the introduction are preferably switched on mutually accordingly via an electrical / electronic control, whereby, in contrast to the normal operation of the twin pump, the respective operating cycle of a cylinder does not start at full power, but rather starts up over a time-stretched phase and also also the end of the delivery stroke runs smoothly, d. H. doesn't suddenly end.
  • There are delayed start-up and run-down phases with each delivery stroke and in these delayed start-up and run-down phases two successive cylinders each overlap, so that an essentially continuous delivery flow is produced while maintaining the delivery pressure and the delivery rate.
  • Fig. 1 the two pistons 1, 2 and the two cylinders 3, 4 of the one pump A are shown schematically and the pistons 5, 6 and the two cylinders 7, 8 of the second pump B.
  • the pump A delivers in the area 9 slide located in the delivery line 10, alternately from the cylinder 3 or 4 and the pump B delivers via a slide located in the region 11 into the delivery line 12, also alternately from the cylinder 7 or 8.
  • the delivery lines 10 and 12 open into a pressure line 13, a rotary valve slide 14 being provided at the junction point, so that the successive delivery strokes can be supplied to the pressure line 13 in a controlled manner by the two pumps.
  • the movement of the pistons 1, 2, 5 and 6 of the pumps A and B is effected hydraulically or by another drive means and is regulated in their final phases by electrical or electronic switching devices, for example limit switches.
  • electrical or electronic switching devices for example limit switches.
  • FIG. 2 the operation with the device according to the invention is shown, specifically with the device as shown schematically in FIG. 1, consisting of pumps A and B, of pistons 1, 2 and 5, 6. It can be seen, from the bottom row, "Addition of the delivery quantities", that an essentially continuous flow of material or flow quantity is achieved.
  • the delivery strokes of the individual pistons of the two pumps are controlled by a corresponding electrical or electronic control so that the delivery strokes connect to one another in a stepless manner.
  • This distribution of shares is brought about by the slide member 14, referred to as the rotary valve, between the pumps, which either takes place automatically according to the delivery volume distribution between pumps A and B, or is actuated in that its opening or closing play extends over the duration of the delivery forecast overlap and at the end of this Overlapping process she has reached the position 100: 0 or 0: 100. If the rotary valve 14 is provided with its own drive, it is equipped with end position indicators, the impulses of which are processed in the control of the pumps.
  • the electrohydraulic drive (power packs) can be carried out individually for each twin pump with a possibility of reducing the amount of pressure medium, eg. B. oil, up and down in accordance with the desired marching speed of the individual piston or as a central drive for both twin pumps, the amount of pressure medium being supplied to the working cylinders in operation. In the latter case, a smooth transition is ensured in the switching process by positive overlap (FIG. 2).
  • pressure medium eg. B. oil
  • FIG. 3 shows such an enlarged device which comprises a number of pumps which are a multiple of two, namely twice two and which are operated in the same way as explained above.
  • the units C and D feed into a common pressure line 15.
  • valve 17 is not required if the switching processes of pumps 1 and 2 and 3 and 4 take place simultaneously. More than two pumps will only run in parallel for the purpose of increasing performance - so cylinders have to deliver at the same time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Treatment Of Sludge (AREA)
  • Load-Engaging Elements For Cranes (AREA)
EP86103935A 1985-04-11 1986-03-22 Dispositif pour transporter une suspension de liquide épais et procédé opérationnel Expired - Lifetime EP0197402B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103935T ATE53635T1 (de) 1985-04-11 1986-03-22 Vorrichtung zur foerderung von dickstoffsuspensionen und verfahren zu ihrem betrieb.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853512946 DE3512946A1 (de) 1985-04-11 1985-04-11 Vorrichtung zur foerderung von dickstoffsuspensionen und verfahren zu ihrem betrieb
DE3512946 1985-04-11

Publications (3)

Publication Number Publication Date
EP0197402A2 true EP0197402A2 (fr) 1986-10-15
EP0197402A3 EP0197402A3 (en) 1987-08-05
EP0197402B1 EP0197402B1 (fr) 1990-06-13

Family

ID=6267704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103935A Expired - Lifetime EP0197402B1 (fr) 1985-04-11 1986-03-22 Dispositif pour transporter une suspension de liquide épais et procédé opérationnel

Country Status (7)

Country Link
EP (1) EP0197402B1 (fr)
JP (1) JPS61252876A (fr)
AT (1) ATE53635T1 (fr)
AU (1) AU587816B2 (fr)
CA (1) CA1281592C (fr)
DE (2) DE3512946A1 (fr)
ZA (1) ZA862657B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315750A1 (fr) * 1987-11-12 1989-05-17 Putzmeister-Werk Maschinenfabrik Gmbh Pompe pour matière épaisse
EP0340050A1 (fr) * 1988-03-04 1989-11-02 Societe Auxiliaire De Transport Et De Materiel (S.A.T.M.) Procédé et installation de transport de matières solides par délayage et pompage
EP0964271A3 (fr) * 1998-06-10 2000-07-05 STN ATLAS Elektronik GmbH Antenne remorquée sous-marin
WO2006125606A1 (fr) * 2005-05-23 2006-11-30 Friedrich Schwing Procede pour commander un dispositif de pompage pour le transport de masses pateuses et commande d'un dispositif de pompage pour le transport de masses pateuses
CN111878343A (zh) * 2020-07-31 2020-11-03 温艳东 混凝土泵送设备及其控制方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07103847B2 (ja) * 1991-02-12 1995-11-08 株式会社新潟鉄工所 多連コンクリートポンプ装置
JPH07103848B2 (ja) * 1991-02-12 1995-11-08 株式会社新潟鉄工所 多連コンクリートポンプ装置
CN106968908B (zh) * 2017-03-29 2020-06-30 长乐智睿恒创节能科技有限责任公司 一种平稳输送混凝土泵以及控制方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279382A (en) * 1964-04-14 1966-10-18 Royal Industries Pump
JPS5011083A (fr) * 1973-05-29 1975-02-04
JPS573835B2 (fr) * 1974-03-25 1982-01-22
GB1585073A (en) * 1976-05-15 1981-02-25 Ackermann R A Pumping devices
DE2909964A1 (de) * 1979-03-14 1980-09-25 Schwing Gmbh F Dickstoffpumpe, insbesondere fuer beton
US4580954A (en) * 1983-05-23 1986-04-08 Boyle Bede Alfred Oscillating-deflector pump
AU561932B2 (en) * 1983-05-23 1987-05-21 Bede Alfred Boyle Opposed piston hydraulic slurry pump with flow control valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315750A1 (fr) * 1987-11-12 1989-05-17 Putzmeister-Werk Maschinenfabrik Gmbh Pompe pour matière épaisse
EP0340050A1 (fr) * 1988-03-04 1989-11-02 Societe Auxiliaire De Transport Et De Materiel (S.A.T.M.) Procédé et installation de transport de matières solides par délayage et pompage
EP0964271A3 (fr) * 1998-06-10 2000-07-05 STN ATLAS Elektronik GmbH Antenne remorquée sous-marin
WO2006125606A1 (fr) * 2005-05-23 2006-11-30 Friedrich Schwing Procede pour commander un dispositif de pompage pour le transport de masses pateuses et commande d'un dispositif de pompage pour le transport de masses pateuses
CN111878343A (zh) * 2020-07-31 2020-11-03 温艳东 混凝土泵送设备及其控制方法

Also Published As

Publication number Publication date
JPS61252876A (ja) 1986-11-10
EP0197402A3 (en) 1987-08-05
ZA862657B (en) 1986-12-30
CA1281592C (fr) 1991-03-19
AU5604386A (en) 1986-11-20
AU587816B2 (en) 1989-08-31
DE3512946A1 (de) 1986-10-16
DE3671939D1 (de) 1990-07-19
EP0197402B1 (fr) 1990-06-13
ATE53635T1 (de) 1990-06-15

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