EP3232057B1 - Verfahren zur übertragung oder förderung von flüssigen oder halbflüssigen materialien mit einer doppelkolbenpumpe und doppelkolbenpumpe dafür - Google Patents

Verfahren zur übertragung oder förderung von flüssigen oder halbflüssigen materialien mit einer doppelkolbenpumpe und doppelkolbenpumpe dafür Download PDF

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Publication number
EP3232057B1
EP3232057B1 EP16164647.6A EP16164647A EP3232057B1 EP 3232057 B1 EP3232057 B1 EP 3232057B1 EP 16164647 A EP16164647 A EP 16164647A EP 3232057 B1 EP3232057 B1 EP 3232057B1
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EP
European Patent Office
Prior art keywords
conveying
plunger
piston
swivel
transfer tube
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EP16164647.6A
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English (en)
French (fr)
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EP3232057A1 (de
Inventor
Otto Tschumi
Tobias Rauber
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Epiroc Rock Drills AB
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Epiroc Rock Drills AB
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Application filed by Epiroc Rock Drills AB filed Critical Epiroc Rock Drills AB
Priority to EP16164647.6A priority Critical patent/EP3232057B1/de
Priority to ES16164647.6T priority patent/ES2687175T3/es
Priority to CN201780018269.4A priority patent/CN108779767B/zh
Priority to CA3012564A priority patent/CA3012564A1/en
Priority to PCT/EP2017/057818 priority patent/WO2017178261A1/en
Publication of EP3232057A1 publication Critical patent/EP3232057A1/de
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Publication of EP3232057B1 publication Critical patent/EP3232057B1/de
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    • 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
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery
    • 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 present invention relates to a method for transmitting or conveying fluid or semi-fluid materials by means of a double piston pump. Furthermore, the present invention relates to a double piston pump for transmitting or conveying fluid or semi-fluid materials, in particular concrete or cement.
  • Double piston pumps for the above-identified purposes are well known in the art. From DE 42 15 403 C2 a double piston pump for transmitting or conveying fluid or semi-fluid materials, in particular concrete or cement is known comprising two conveying cylinders, each provided inside with a conveying piston, those conveying pistons being movable in an alternating push-pull manner. A feed hopper is provided for receiving material to be conveyed, which is fed by a material feed unit.
  • a transfer tube system comprising a transfer tube which is connectable to a flow line or conveying pipes and is capable to connect said flow line or conveying pipes alternately with one of said conveying cylinders by means of articulation means, said articulation means comprising two swivel or plunger cylinders being hydraulically actuateable, the swivelling movement of said transfer tube being generated by said swivel or plunger cylinders.
  • a conveying piston drive mechanism comprising a drive piston for each conveying piston is provided in a hydraulic drive system, said drive pistons being connected to the dedicated conveying piston, wherein both drive pistons are supplied by a conveying pump, said supply being controllable by a valve.
  • a main control valve is provided, with which alternating hydraulic supply to the corresponding drive piston is controlled.
  • a double piston pump has the disadvantage, that during the switching movement of the transfer tube, there is a gap in transmitting or conveying the fluid or semi-fluid materials into the flow line leading to instable feeding, i. e. pulsations of the conveyed materials which is disadvantageous in many fields, in particular that of projecting concrete for covering tunnel walls.
  • the double piston pump of DE 42 15 403 C2 suggests a so called “push over"-system. This system shortly provides an additional amount of conveyed materials by increasing the speed of the acting conveying piston during the pushing cycle of the piston.
  • DE 92 17 574 U1 also discloses a system for transmitting or conveying fluid or semi-fluid materials by means of a double piston pump, said double piston pump comprising two conveying cylinders, each provided inside with a conveying piston, said conveying pistons being movable in an alternating push-pull manner, a feed hopper for receiving material to be conveyed, which is fed by a material feed unit, a transfer tube system comprising a transfer tube, which is connectable to a flow line or conveying pipes and is capable to connect said flow line or conveying pipes alternately with one of said conveying cylinders by means of articulation means, said articulation means comprising two swivel or plunger cylinders being hydraulically actuateable, the swivelling movement of said transfer tube being generated by said swivel or plunger cylinders, a conveying piston drive mechanism comprising a drive piston for each conveying piston provided in a hydraulic drive system, said drive pistons being connected to the dedicated conveying piston, wherein
  • DE 43 18 267 A1 also shows a double piston pump in which the hydraulic circuit to drive the two swivel or plunger cylinders can be short-cicuited between the conveying pump and a reservoir.
  • the hydraulic supply to the drive pistons is interrupted and said hydraulic circuit of the conveying pump is short-circuited by means of said main control valve, and the delivery rate of the conveying pump is increased, so that after the swivelling movement of the transfer tube has been terminated and at the beginning of a next conveying cycle, an increased supply output of the supplying conveying cylinder is carried out for a short term leading to a short-term increase of said supplied fluid or semi-fluid materials.
  • the hydraulic cylinders of the drive pistons are no longer under pressure and the switching action of the transfer tube can be carried out at a maximum speed and a minimum time and due to the increase of the delivery rate of the conveying pump, there is provided an increased supply of oil to the respective hydraulic cylinder, leading to a short-term increase of said supplied fluid or semi-fluid materials, so that in operation a pulsation of the supplied materials is avoided or almost avoided.
  • each swivel or plunger cylinder comprises a movable drive element or plunger, which, when reaching the final movement position, is damped. Action of the swivel or plunger cylinders is carried out with a minimum time and, therefore, with maximum speed of the drive elements or plungers.
  • a double piston pump transmitting or conveying fluid or semi-fluid materials, in particular concrete or cement.
  • a double piston pump is characterised in that said double piston pump is configured such that during swivelling movement of the transfer tube said main control valve interrupts the hydraulic supply to the drive pistons by short-circuiting said hydraulic circuit of the conveying pump, and that the conveying pump is configured to increase the delivery rate after termination of the swivelling movement of the transfer tube and at the beginning of a next conveying cycle for a short term.
  • each swivel or plunger cylinder comprises a movable drive element, in particular a plunger, being movable in a forward or extracting and a backward or retracting stroke, wherein said movable drive element or plunger is damped at least when reaching its end-position of the retracting stroke.
  • each swivel or plunger cylinder comprises a piston filled with gaseous material and a spring package acting against said piston, resulting in a braking of the movable drive element or plunger, so that the movement of said drive element or plunger can be damped avoiding harm of the transfer tube system. Furthermore, there is the advantage, that during braking of the movable drive element or plunger of said swivel or plunger cylinder, said movable drive element or plunger provides a pretension or pre-stress of said spring package and/or of the piston, wherein an energy store is carried out, in particular of kinetic energy.
  • Fig. 1 shows a double piston pump 1 in schematic view, which basic configuration is known in the art.
  • Double piston pump 1 comprises conveying cylinders 3 and 4, in which conveying pistons 5 and 6, respectively, are movable.
  • Double piston 1 comprises a feed hopper 7 comprising a housing 10, which on the rearward side is provided with a rearward plate 8. According to material feed arrow A 9 the material which is to be distributed by the double piston pump 1 is fed into feed hopper 7.
  • Fig. 1 does not show material fed into feed hopper 7.
  • transfer tube system (S-Weiche) 13 comprising transfer tube 14 to be alternately connected to opening 11 connected with conveying cylinder 3 and opening 12 connected to conveying cylinder 4.
  • transfer tube 14 is swivelled between openings 11 and 12 via swivel lever 15 forming part of articulation means 17 fixed to rearward plate 8.
  • articulation means 17 are not shown completely but are furthermore described with reference to Fig. 5 to 9 .
  • FIG. 1 the material which is fed into feed hopper 7 according to arrow A is sucked into conveying cylinder 4 by retracting motion of conveying piston 6, which is schematically shown by arrow B.
  • swivel lever 15 which comprises a tube portion 20 is in a position before opening 11 connecting transfer tube 14 with conveying cylinder 3.
  • Conveying piston 5 moves in forward direction to rearward plate 8 leading to forwarding material which, according to arrow C is fed into a conveying pipe (not shown) to be distributed during operation.
  • Conveying cylinders 3 and 4 are fixed to rearward plate 8 on one end and are housed in a housing 22 at their rearward end. As will be described below and not shown in Fig. 1 , conveying pistons 5 and 6 are driven by driving pistons 19 and 21, respectively (see Fig. 2 ) which are driven by hydraulic system 24 as shown in Fig. 2 .
  • FIG. 2 showing the conveying piston drive mechanism 23 comprising a hydraulic drive system 24.
  • drive piston 19 as well as drive piston 21 are configured conventionally. They both have the configuration of a double acting piston.
  • Drive piston 19 comprises a piston head 25 housed in a cylinder housing 27. From piston head 25 a piston rod 29 is protruding and is connected for example to conveying piston 5.
  • drive piston 21 comprises a piston head 31 housed in a cylinder housing 33. Piston head 31 is connected to a protruding piston rod 35 which is connected for example to conveying piston 6.
  • pistons 25 and 31 together with piston rods 29 and 35 are moved in a corresponding direction leading to movement of conveying piston 5 and conveying piston 6 as shown in Fig. 1 in the corresponding direction.
  • Line A is a line for feeding-in oil for conveying concrete or other materials and which is connected to the pump.
  • Line B is the return run of oil into a (not shown) reservoir.
  • Valve V3 is a direct acting four-way/three-position solenoid operated directional valve for piloting the four-way/three-position pilot-to-shift directional valve V5.
  • Valve V4 is a check valve.
  • Valve V5, which is the the main control valve, is hydraulically actuated by valve V3, and comprises a locking middle position. In this position lines A and B are short- circuited. Therefore, the maximum pump pressure delivered via line A is always present at valve V5.
  • Valve V6 is a check valve and acts as back flow preventer during operation of high pressure pump for rock cleaning.
  • Valve V7 is a volume control unit for rod-side feeding-in of oil and provides that return running cylinder being a little faster than forerunning cylinder as well as a compensation of oil conveying loss. Accordingly, the sucking in stroke of the corresponding conveying piston 5 or 6 is always ended a little time earlier than the pushing stroke of the respective other conveying cylinder 6 or 5. This shows that when switching of the transfer tube system is finished the corresponding conveying cylinder is fully prepared to start the pushing stroke.
  • Valve V8 is a check valve and acts as a return run block of rod-side oil feeding-in.
  • Valve V9 is a pressure relief valve of rod-side oil feeding-in and valve V16 is a shuffle valve for feeding-in rod-side of oil A.
  • Main control valve V5 can be actuated very fast by solenoid valve V3, as only small pressure increase is required.
  • Line T drains control hydraulic fluid from valve V3 to a reservoir (not shown)
  • Fig. 4 shows a block diagram of a conventional pump mechanism 39 which is marketed by the company Bosch Rexroth. As can be seen, the pump mechanism is driven by an electric motor 41. Electric motor 41 drives a pumping action of oil into line A. As this pump system is conventional and does not form part of the present invention, further description thereof is omitted.
  • FIG. 3 showing a hydraulic system of the transfer tube system 13 (S-Weiche) of the present invention.
  • Hydraulic system 43 is prepared to act on swivel or plunger cylinders 45 and 47. Those swivel or plunger cylinders 45, 47 are double acting as can be seen from Fig. 3 . However, the swivel or plunger cylinders 45 and 47 are shown only schematically and are described in more detail below with respect of Figures 6 to 9 .
  • Valve V2 is a check valve provided as return run blocker, which blocks reservoir drain.
  • Valve V3 is an orifice (Blende) for controlling drain of the reservoir when switching off valve V4.
  • Valve V4 is a solenoid valve for draining to a reservoir (not shown).
  • Valve V7 is a pressure reducing valve for reducing the operational pressure for acting the transfer tube system 13 as shown in Fig. 1 .
  • Valve V9 is pressure control valve for limiting maximum pressure of the transfer tube system 13.
  • Unit V10 is a flow control or volumetric control unit for adjusting the volume of oil for cleaning operation.
  • Valve V12 is a solenoid valve for activating the transfer tube system 13.
  • Valve V15 is also an orifice (Blende) for limiting volume to control valves V24 and V25, respectively.
  • Valve V20 is an unlockable double check valve which is active during forerun of cylinder B and return run of cylinder A.
  • Valve V21 is an unlockable double check valve, which is active during forerun of cylinder A and return run of cylinder B.
  • Valve V22 is an unlockable double check valve, which is active during forerun of cylinder B and return run of cylinder A.
  • Valve V23 is an unlockable double check valve, which is active during forerun of cylinder A and return run of cylinder B.
  • Valve V24 is a solenoid valve for activating forerun of cylinder B whereas V25 is a solenoid valve for activating forerun of cylinder A.
  • FIG. 5 is a view from behind of the feed hopper 7 showing the transfer tube system 13 in a middle position between openings 11 and 12.
  • Tube portion 20 of swivel lever 15 is located between these openings 11 and 12 and swivel of plunger cylinders 45 and 47 are both also in a middle position. Swivel of plunger cylinders 45 and 47 will be described in more detail with reference to Figures 6 to 9 .
  • the transfer tube system 13 comprises a plate 37 in which the openings 11 and 12 are located.
  • the transfer tube system 13 comprises two arms 51 and 52.
  • Arm 51 is provided with a bearing 54 to pivotable support swivel or plunger cylinder 45
  • arm 52 is provided with a bearing 56 to for pivotable support swivel or plunger cylinder 47.
  • Both swivel of plunger cylinders 45 and 47 are, at their other ends, pivotably connected to a control plate 53, which in turn is connected to swivel lever 15 in order to move swivel lever 15 from one opening 11, 12 to the other opening 12, 11.
  • a control plate 53 which in turn is connected to swivel lever 15 in order to move swivel lever 15 from one opening 11, 12 to the other opening 12, 11.
  • Swivel or plunger cylinder 47 comprises a cylinder body or housing 55 in which a hydraulic oil inlet/outlet 57 is provided at one end of the partly hollow housing 55 of swivel or plunger cylinder 47. Within the housing 55, there is provided a plunger 59 which is movable within housing 55.
  • Plunger 59 is partly formed as a hollow body housing several specific elements inside. There is provided a spring package 61 for example in form of a laminated disc spring.
  • a gas piston 63 which can be filled via a gas inlet/outlet 65, in which a check valve 66 is provided, wherein gas is guided to the gas piston 63 via internal line 67.
  • a sealing kit 69 for sealing off the plunger 59 there is provided a sealing kit 69 and for sealing against escaping oil outside the housing 55.
  • a feeding projection 60 is provided at the infeed end of plunger 59 comprising an inlet channel comprising a check valve 64.
  • Check valve 64 is partly housed in a front plate 70 closing the the hollow plunger 59 at the hydraulic fluid or oil infeed end of plunger 59.
  • an oil chamber 68 In the retracted position of Fig. 6 between gas piston 63 and front plate, there is provided an oil chamber 68 which is filled with oil in this position.
  • Front plate 70 is provided with openings or nuts for example like a castellated nut. To fill in oil into chamber 68 oil is fed through channel 62 over check valve 64 which prevents oil from escaping chamber 68 back into channel 62.
  • swivel or plunger cylinder 47 is shown in four different positions.
  • Fig. 6 shows the complete retracted position before a stroke of plunger 59.
  • Fig. 7 shows the cylinder extracted position where plunger 59 has reached its maximum extracted position.
  • Fig. 8 shows a position during retracting movement of plunger 59 just before the start of the damping operation and
  • Fig. 9 shows the position while damping of the plunger and loading gas accumulator for energy recuperation is carried out.
  • plunger cylinder 47 is shown in its most extracted position. Oil is fed trough oil inlet 57 urging projection 60 to move away from its retracted position. Gas piston 63 urges oil out of chamber 68 to escape through openings (not shown) of front plate 70 into the hollow room left when plunger 59 moves away from its retracted position shown in Fig. 6 . Gas piston 63 urges oil to escape from chamber 68 until it abuts against front plate 70 as is shown in Fig. 7 .
  • FIG. 8 there is shown plunger 47 during retracting movement in the position when damping of plunger 47 starts.
  • Projection 70 reaches oil in inlet channel 58 and urges check valve 64 to open.
  • oil in chamber 72 is urged to move through openings of front plate 70 to reinstall oil chamber 68, thereby moving gas piston 63 toward spring package 61. This increase the spring load of gas piston 63.
  • Fig. 9 shows the position of plunger 47 shortly before reaching retracted end position of Fig. 6 .
  • Oil chamber 68 is partly filled and oil chamber 72 is further reduced.
  • plunger 47 With plunger 47 according to the present invention, there is provided a damping system which damps plunger when moving into its retracted position and an energy stored by gas piston 63 together with the spring package 21 is used during the next stroke of plunger 47 to accelerate its movement.
  • a double piston pump with which an essentially constant conveying of fluid or semi-fluid materials, in particular concrete or cement is achieved overcoming the drawbacks of the prior art.
  • Hydraulic drive mechanism (Fig. 2):

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Claims (12)

  1. Verfahren zum Übertragen und Fördern von flüssigen oder halbflüssigen Materialien, insbesondere von Beton oder Mörtel, mittels einer Doppelkolbenpumpe (1), welche aufweist:
    zwei Förderzylinder (3, 4), in denen jeweils ein Förderkolben (5, 6) angeordnet ist, wobei die Förderkolben (5, 6) in einer alternierenden Druck-Zieh-Weise bewegbar sind,
    einen zur Aufnahme des zu fördernden Materials dienenden Fülltrichter (7), der von einer Materialzufuhreinheit gespeist wird,
    ein Rohrweichensystem (13), das eine Rohrweiche (14) aufweist, die mit einer Fließleitung oder Förderrohren verbindbar ist und in der Lage ist, diese Fließleitung oder Förderrohre abwechselnd mit einem der Förderzylinder (3, 4) mittels einer Gelenkeinrichtung (17) zu verbinden, wobei die Gelenkeinrichtung (17) zwei Schwenk- oder Plungerzylinder (45, 47) aufweist, die hydraulisch betätigbar sind, wobei die Schwenkbewegung der Rohrweiche (14) durch die Schwenk- oder Plungerzylinder (45, 47) erzeugt wird,
    eine Förderkolben-Antriebseinrichtung (23), die einen Antriebskolben (19, 21) für jeden Förderkolben (5, 6), angeordnet in einem hydraulischen Antriebssystem (24), aufweist, wobei die Antriebskolben (19, 21) mit dem zugeordneten Förderkolben (5, 6) verbunden sind, wobei beide Antriebskolben (19, 21) von einer Förderpumpe (39) gespeist werden, die in einem Hydraulikkreis vorgesehen ist, wobei die Zufuhr durch ein Ventil steuerbar ist, und
    ein Hauptsteuerventil (V5), mit dem abwechselnd die Hydraulikzufuhr zu dem jeweiligen Antriebskolben (19, 21) gesteuert wird,
    dadurch gekennzeichnet,
    dass während der Schwenkbewegung der Rohrweiche (14):
    - die Hydraulikzufuhr zu den Antriebskolben (19, 21) unterbrochen wird und der Hydraulikkreis mittels des Hauptsteuerventils (V5) kurzgeschlossen wird, und
    - die Pumpleistung der Förderpumpe erhöht wird,
    sodass nach Beendigung der Schwenkbewegung der Rohrweiche (14) und ab Beginn eines nächsten Förderzyklus kurzzeitig eine erhöhte Förderleistung des fördernden Förderzylinders (3, 4) ausgeführt wird, was zu einer kurzzeitigen Erhöhung des geförderten flüssigen oder halbflüssigen Materials führt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass nach der kurzzeitigen Erhöhung der Pumpleistung der Förderpumpe die Pumpleistung wieder reduziert wird.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass mittels eines Führungssteuerventils (V3) das Hauptsteuerventil (V5) gesteuert wird, wobei während der Bewegung der Rohrweiche (14) sowohl das Hauptsteuerventil (V5) als auch das Führungssteuerventil (V3) in eine inaktive oder neutrale Mittenstellung gebracht werden.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jeder Schwenk- oder Plungerzylinder (45, 47) ein bewegliches Antriebselement bzw. einen beweglichen Plunger (59) aufweist, das bzw. der beim Erreichen seiner Endlage gedämpft wird.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass beim Abbremsen des beweglichen Antriebselements bzw. des Plungers (59) des Schwenk- oder Plungerzylinders (45, 47) das bewegbare Antriebselement bzw. der bewegbare Plunger (59) in die entgegengesetzte Richtung vorgespannt ist, wobei die Vorspannung eine Energiespeicherung, insbesondere von kinetischer Energie, liefert.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass beim nächsten Ausfahren des beweglichen Antriebselements oder Plungers (59) des Schwenk- bzw. Plungerzylinders (45, 47) die gespeicherte Energie zurückgewonnen wird, derart, dass die zurückgewonnene Energie das bewegliche Antriebselement oder den Plunger (59) zusätzlich beschleunigt.
  7. Doppelkolbenpumpe (1) zum Übertragen oder Fördern von flüssigen oder halbflüssigen Materialien, insbesondere von Beton oder Mörtel, welche aufweist
    zwei Förderzylinder (3, 4), in denen jeweils ein Förderkolben (5, 6) angeordnet ist, wobei die Förderkolben (5, 6) in einer alternierenden Druck-Zieh-Weise bewegbar sind,
    einen Fülltrichter (7) zur Aufnahme von zu förderndem Material, der von einer Materialzufuhreinheit gespeist wird,
    ein Rohrweichensystem (13), das eine Rohrweiche (14) aufweist, die mit einer Fließleitung oder Förderrohren verbindbar ist und in der Lage ist, diese Fließleitung oder Förderrohre abwechselnd mit einem der Förderzylinder (3, 4) mittels einer Gelenkeinrichtung (17) zu verbinden, wobei die Gelenkeinrichtung (17) zwei Schwenk- oder Plungerzylinder (45, 47) aufweist, die hydraulisch betätigbar sind, wobei die Schwenkbewegung der Rohrweiche (14) durch die Schwenk- oder Plungerzylinder (45, 47) erzeugt wird,
    eine Förderkolben-Antriebseinrichtung (23), die einen Antriebskolben (19, 21) für jeden Förderkolben (5, 6), angeordnet in einem hydraulischen Antriebssystem (24), aufweist, wobei die Antriebskolben (19, 21) mit dem zugeordneten Förderkolben (5, 6) verbunden sind, wobei beide Antriebskolben (19, 21) von einer Förderpumpe (39) gespeist werden, die in einem Hydraulikkreis vorgesehen ist, wobei die Zufuhr durch ein Ventil steuerbar ist, und
    ein Hauptsteuerventil (V5), mit dem abwechselnd die Hydraulikzufuhr zu dem jeweiligen Antriebskolben (19, 21) gesteuert wird,
    dadurch gekennzeichnet,
    dass die Doppelkolbenpumpe (1) derart ausgebildet ist, dass während des Schwenkens der Rohrweiche (14) das Hauptsteuerventil (V5) die Hydraulikzufuhr zu den Antriebskolben (19, 21) durch Kurzschließen des Hydraulikkreises der Förderpumpe unterbricht, und
    dass die Förderpumpe derart ausgestaltet ist, dass sie die Zufuhrrate nach Beenden der Schwenkbewegung der Rohrweiche (14) und am Beginn eines nächsten Förderzyklus kurzzeitig erhöht.
  8. Doppelkolbenpumpe nach Anspruch 7, dadurch gekennzeichnet, dass das Hauptsteuerventil (V5) durch ein Führungssteuerventil (V3) hydraulisch aktivierbar ist.
  9. Doppelkolbenpumpe (1) nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass jeder Schwenk- bzw. Plungerzylinder (45, 47) ein bewegliches Antriebselement, insbesondere einen Plunger (59) aufweist, das bzw. der in einem Vorwärts- oder Ausfahrhub und einem Rückwärts- oder Einfahrhub bewegbar ist, wobei das bewegliche Antriebselement oder Plunger (59) wenigstens wenn es bzw. er seine Endlage im Einfachhub erreicht, gedämpft wird.
  10. Doppelkolbenpumpe (1) nach Anspruch 9, dadurch gekennzeichnet, dass jeder Schwenk- bzw. Plungerzylinder (45, 47) einen mit gasförmigem Material gefüllten Kolben (63) und ein Federpaket (61) aufweist, das gegen den Kolben (63) wirkt, was zu einer Abbremsung des beweglichen Antriebselements oder Plungers (59) führt.
  11. Doppelkolbenpumpe (1) nach Anspruch 10, dadurch gekennzeichnet, dass beim Abbremsen des beweglichen Antriebselements oder Plungers (59) des Schwenk- bzw. Plungerzylinders (45, 47) das bewegliche Antriebselement oder der Plunger (59) eine Vorgespanntheit oder eine Vorspannung des Federpakets (61) und/oder des Kolbens (63) erzeugt, wobei eine Energiespeicherung, insbesondere an kinetischer Energie, erfolgt.
  12. Doppelkolbenpumpe (1) nach Anspruch 11, dadurch gekennzeichnet, dass während des nächsten Vorwärtshubs des beweglichen Antriebselements oder Plungers (59) des Schwenk- oder Plungerzylinders (45, 47) die gespeicherte Energie zurückgewonnen wird, derart, dass die gespeicherte Energie das bewegliche Antriebselement oder den Plunger (59) zusätzlich beschleunigt.
EP16164647.6A 2016-04-11 2016-04-11 Verfahren zur übertragung oder förderung von flüssigen oder halbflüssigen materialien mit einer doppelkolbenpumpe und doppelkolbenpumpe dafür Active EP3232057B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16164647.6A EP3232057B1 (de) 2016-04-11 2016-04-11 Verfahren zur übertragung oder förderung von flüssigen oder halbflüssigen materialien mit einer doppelkolbenpumpe und doppelkolbenpumpe dafür
ES16164647.6T ES2687175T3 (es) 2016-04-11 2016-04-11 Método para transmitir o transportar materiales fluidos o semifluidos por medio de una bomba de doble pistón y bomba de doble pistón para ello
CN201780018269.4A CN108779767B (zh) 2016-04-11 2017-04-03 用双活塞泵传送或输送流体或半流体材料的方法及其双活塞泵
CA3012564A CA3012564A1 (en) 2016-04-11 2017-04-03 Method for transmitting or conveying fluid or semi-fluid materials by means of a double piston pump and double piston pump therefor
PCT/EP2017/057818 WO2017178261A1 (en) 2016-04-11 2017-04-03 Method for transmitting or conveying fluid or semi-fluid materials by means of a double piston pump and double piston pump therefor

Applications Claiming Priority (1)

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EP16164647.6A EP3232057B1 (de) 2016-04-11 2016-04-11 Verfahren zur übertragung oder förderung von flüssigen oder halbflüssigen materialien mit einer doppelkolbenpumpe und doppelkolbenpumpe dafür

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CN111792382B (zh) * 2019-04-09 2024-05-28 航天长征化学工程股份有限公司 多片柱塞式粉体加压输送装置
CN110043438A (zh) * 2019-05-24 2019-07-23 徐州徐工施维英机械有限公司 糊状物料输送装置和工程车辆
CN110547063B (zh) * 2019-09-04 2022-01-11 山东弘宇农机股份有限公司 一种多功能液压提升器总成
CN113700626A (zh) * 2021-09-07 2021-11-26 湖南嘉顺华新材料有限公司 一种稳定可靠的压力自动控制的泥浆柱塞泵
CN114956289B (zh) * 2022-06-29 2023-07-25 长春电子科技学院 污水环保净化处理用的自动化撒药机械系统

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CN108779767A (zh) 2018-11-09
WO2017178261A1 (en) 2017-10-19
CA3012564A1 (en) 2017-10-19
ES2687175T3 (es) 2018-10-24
EP3232057A1 (de) 2017-10-18
CN108779767B (zh) 2020-01-21

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