EP0854285A2 - Betonpumpe - Google Patents

Betonpumpe Download PDF

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Publication number
EP0854285A2
EP0854285A2 EP98830016A EP98830016A EP0854285A2 EP 0854285 A2 EP0854285 A2 EP 0854285A2 EP 98830016 A EP98830016 A EP 98830016A EP 98830016 A EP98830016 A EP 98830016A EP 0854285 A2 EP0854285 A2 EP 0854285A2
Authority
EP
European Patent Office
Prior art keywords
suction
connection duct
rotation
container
delivery
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.)
Withdrawn
Application number
EP98830016A
Other languages
English (en)
French (fr)
Other versions
EP0854285A3 (de
Inventor
Gian Guido Ravellini
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0854285A2 publication Critical patent/EP0854285A2/de
Publication of EP0854285A3 publication Critical patent/EP0854285A3/de
Withdrawn legal-status Critical Current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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving

Definitions

  • the present invention relates to a pumping device, in particular for cement material.
  • the invention relates in particular to a device comprising: a container, suitable for containing a material to be pumped: a first piston pump, having a first suction/delivery mouth communicating with the inside of the container; a second piston pump, having a second suction/delivery mouth also communicating with the inside of the container; a deviating member, comprising a movable connection duct provided with an aperture for introduction of the material pressed by the said piston pumps.
  • the said piston pumps during use, are designed to perform alternately, via the associated suction/delivery mouths, suction and compression of a part of the material contained in the container.
  • connection duct is capable of rotating, following operation synchronised with that of said piston pumps, about an axis of rotation with the possibility of assuming selectively at least a first position and a second position in which the inlet aperture is sealingly connected to the first suction/delivery mouth and, respectively, to the second suction/delivery mouth. It is envisaged that, in both the abovementioned positions of the connection duct, an outlet end thereof is connected to a duct for conveying the material.
  • the movable deviating member consists of a curved, elbow-shaped, duct able to perform an oscillating movement about an axis of rotation substantially coinciding with the axis of the entry mouth of the fixed duct for conveying the concrete.
  • the deviating member is commonly referred to as being of the "elephant trunk" type.
  • the deviating member is provided with a movable duct which is also able to perform an oscillating movement, the longitudinal axis of which has a substantially S-shaped configuration.
  • the deviating member positions the inlet aperture so that it is directly facing, in a sealing manner, the mouth of the pump which is performing the concrete compression or delivery phase, while the mouth of the other pump, during suction, is able to suck in the concrete contained in the container; once the pumps have terminated the corresponding compression and suction phases, the deviating member is displaced so that its inlet aperture sealingly faces the mouth of the pump which previously sucked in the concrete and which is now ready for compression thereof; after which the pumps are activated, with reverse functions compared to the previous phase, namely the pump which previously performed a sucking action now performs a pressing action, and vice versa.
  • a drawback of the abovementioned known devices consists in the fact that, during displacement of the deviating member from one pump to another, no pumping action is performed. In other words, the time it takes for displacement of the deviating member from one pump to another represents dead time in terms of operation of the device.
  • the object of the present invention is to overcome the abovementioned drawback of the known art, by providing a pumping device in which there is no dead time.
  • a further object is that of eliminating all the solenoid valves and end-of-travel devices which are the cause of various drawbacks.
  • One advantage of the invention is that it is simple and low-cost from a constructional point of view.
  • Another advantage is that it allows a continuous and regular movement of the deviating member.
  • 1 denotes in its entirety a pumping device comprising a container 2 suitable for containing a material to be pumped.
  • the device 1 is particularly suitable for the pumping of concrete.
  • the container 2, which is of the known type, has walls 3 and has at the top a wide opening for introduction of the concrete.
  • the container 2 is sectioned along a horizontally sectioned plane.
  • the device 1 comprises a first piston pump 4 with a horizontal-axis cylinder 5 terminating at one end in a first suction/delivery mouth 6 communicating with the inside of the container 2.
  • 7 denotes the actuating stem of the piston sliding inside the cylinder 5.
  • the device 1 also comprises a second piston pump 8 with a cylinder 9, the axis of which is parallel to that of the cylinder 5 and lying on the same horizontal plane.
  • the cylinder 9 terminates in a second suction/delivery mouth 10 communicating with the inside of the container 2 and located alongside the first mouth 6, substantially coplanar with respect to the latter.
  • 11 denotes the actuating stem of the piston sliding inside the cylinder 9.
  • the two actuating stems 7 and 11 slide inside respective hydraulic cylinders 7a and 11a operated by the hydraulic circuit which will be described below.
  • the piston pumps 4 and 8, during use, are designed to perform alternately, via the associated suction/delivery mouths 6 and 10, suction and compression of a part of the material contained in the container 2.
  • the pumps 4 and 8 are operated by means of a hydraulic transmission circuit, as a result of which the pumps act in phase with one another so that, when one performs the compression phase, the other one performs the suction phase.
  • the device 1 is provided with a deviating member 12 comprising a movable connection duct 13 provided with an inlet aperture 14 for the concrete pressed by the piston pumps 4 and 8.
  • connection duct 13 is capable of rotating about an axis of rotation x-x, following operation by drive means, denoted in their entirety by 15, which act in synchronism with the action of the piston pumps 4 and 8.
  • the connection duct 13 has the possibility of assuming selectively at least a first position and a second position in which the inlet aperture 14 is sealingly connected to the first suction/delivery mouth 6 and, respectively, to the second suction/delivery mouth 10.
  • connection duct 13 has an outlet end 16 connected to a conveying duct 17 (illustrated only partly in Figure 1) for conveying the concrete, also at considerable distances and heights.
  • the outlet end 16 and an entry mouth 18 of the conveying duct 17 are coaxial and directly facing one another; their common axis coincides with the axis of rotation x-x of the conveying duct 13, so that during rotation of the latter they remain coaxially facing and communicating.
  • the end part 19 of the connection duct 13 is cylindrical with an axis x-x and is rotatably coupled to the container 2 by means of rolling support elements 20.
  • the inlet aperture 14 of the duct 13 extends longitudinally between the first suction/delivery mouth 6 and the second suction/delivery mouth 10 and has the shape of a curved eyelet with its longitudinal axis substantially in the form of an arc of a circumference, the centre of which is situated in the vicinity of or coinciding with the axis of rotation x-x of the connection duct 13.
  • the angular amplitude of the inlet aperture 14 is slightly less than 180°.
  • sealing means of the known type, operating between the inlet aperture 14 and a fixed wear plate 21 which is mounted at one end of the piston pumps 4 and 8 and on which the connection duct 13 is designed to slide during use.
  • the suction/delivery mouths 6 and 10 of the piston pumps 4 and 8 are situated in diametrically opposite positions with respect to the axis of rotation x-x of the connection duct 13.
  • the drive means 15 are designed to cause continuous rotation of the connection duct 13. These drive means 15 are arranged outside the container 2 and do not come into contact with the concrete.
  • connection duct 13 gradually narrows from the inlet aperture 14 towards the outlet end 16 leading into the conveying duct 17.
  • the longitudinal axis of the connection duct 13 is a curved line substantially in the form of an "S", as shown in Figure 4.
  • the drive means 15 comprise a hydraulic motor 22, with a reducer 23, having a predetermined swept volume equal to the displacement of the two pistons 7a and 11a.
  • the motor 22 imparts the rotation to a pivot 26 on which the movable connection duct is keyed.
  • the oil leaving the hydraulic motor 22, via a duct 27, enters into a rotating distributor 28 moved, by means of a chain 29, by the same pivot 26 on which a pinion 30 is keyed.
  • the chain 29, actuated by the pinion 30, causes rotation of a pinion 31 keyed onto a shaft of the rotating distributor 28.
  • the oil supplied from the motor enters into the rotating distributor through an inlet 32 and emerges alternately from the mouth 33 or 34, each of which supplies respectively the hydraulic cylinder 7a or 11a.
  • the oil which, for example, enters into the chamber of the cylinder 7a compresses the oil which is located underneath the piston and is conveyed, via the connection 35, to the bottom chamber of the other cylinder lla which is thus moved in the opposite direction to the previous one, resulting in the alternating movement of the pistons.
  • the pumping control system is therefore entirely hydraulic/mechanical.
  • the device 1 operates as follows.
  • the piston pumps 4 and 8 are activated so as to perform alternately the respective compression and suction strokes in phase with one another, while the connection duct 13 is operated so as to perform a continuous rotational movement about the axis x-x; this movement is synchronised with operation of the piston pumps 4 and 8.
  • the inlet aperture 14 is positioned at least partially facing, in a sealing manner, the end mouth of one of the piston pumps, i.e. the pump performing the compression phase. In this way the concrete is able to pass, via the connection duct 13, from the pump to the conveying duct 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
EP98830016A 1997-01-17 1998-01-16 Betonpumpe Withdrawn EP0854285A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97PR000002A IT1294068B1 (it) 1997-01-17 1997-01-17 Dispositivo di pompaggio, in particolare per materiale cementizio.
ITPR970002 1997-01-17

Publications (2)

Publication Number Publication Date
EP0854285A2 true EP0854285A2 (de) 1998-07-22
EP0854285A3 EP0854285A3 (de) 1999-11-24

Family

ID=11396048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98830016A Withdrawn EP0854285A3 (de) 1997-01-17 1998-01-16 Betonpumpe

Country Status (2)

Country Link
EP (1) EP0854285A3 (de)
IT (1) IT1294068B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042570A1 (de) * 1999-12-08 2001-06-14 Putzmeister Aktiengesellschaft Verfahren und anordnung zum betonieren von vertikalen schächten
WO2005085636A1 (de) * 2004-02-26 2005-09-15 Schwing Gmbh Kolben-dickstoffpumpe
CN103352822A (zh) * 2013-06-20 2013-10-16 山东科技大学 柱塞斜盘式泥浆泵
EP4012181A1 (de) * 2020-12-10 2022-06-15 Liebherr-Mischtechnik GmbH Dickstofffördervorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068806A (en) * 1961-07-10 1962-12-18 Robert T Sherrod Pump for semi-fluid material
US3663129A (en) * 1970-09-18 1972-05-16 Leon A Antosh Concrete pump
US3829254A (en) * 1971-10-26 1974-08-13 E Pieper Pump for concrete and the like
EP0422745A1 (de) * 1989-10-13 1991-04-17 Pieter Faber Betonpumpvorrichtung
EP0690229A1 (de) * 1994-06-28 1996-01-03 Sedepro Verdrängerpumpe with Drehschieber
DE19503986A1 (de) * 1995-02-07 1996-08-08 Hudelmaier Ulrike Verfahren und Vorrichtung zum Fördern von Beton oder anderen Dickstoffen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068806A (en) * 1961-07-10 1962-12-18 Robert T Sherrod Pump for semi-fluid material
US3663129A (en) * 1970-09-18 1972-05-16 Leon A Antosh Concrete pump
US3829254A (en) * 1971-10-26 1974-08-13 E Pieper Pump for concrete and the like
EP0422745A1 (de) * 1989-10-13 1991-04-17 Pieter Faber Betonpumpvorrichtung
EP0690229A1 (de) * 1994-06-28 1996-01-03 Sedepro Verdrängerpumpe with Drehschieber
DE19503986A1 (de) * 1995-02-07 1996-08-08 Hudelmaier Ulrike Verfahren und Vorrichtung zum Fördern von Beton oder anderen Dickstoffen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001042570A1 (de) * 1999-12-08 2001-06-14 Putzmeister Aktiengesellschaft Verfahren und anordnung zum betonieren von vertikalen schächten
US6776558B1 (en) * 1999-12-08 2004-08-17 Putzmeister Ag Method and arrangement for concreting vertical shafts
WO2005085636A1 (de) * 2004-02-26 2005-09-15 Schwing Gmbh Kolben-dickstoffpumpe
KR100816029B1 (ko) * 2004-02-26 2008-03-21 슈빙 게엠베하 진한 물질 피스톤 펌프
CN100439703C (zh) * 2004-02-26 2008-12-03 施维英集团公司 一种稠物质活塞泵
CN103352822A (zh) * 2013-06-20 2013-10-16 山东科技大学 柱塞斜盘式泥浆泵
EP4012181A1 (de) * 2020-12-10 2022-06-15 Liebherr-Mischtechnik GmbH Dickstofffördervorrichtung

Also Published As

Publication number Publication date
ITPR970002A1 (it) 1998-07-17
IT1294068B1 (it) 1999-03-22
EP0854285A3 (de) 1999-11-24

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