EP3613983B1 - Pompe à piston pour matières épaisses pourvue de boîte à eau - Google Patents

Pompe à piston pour matières épaisses pourvue de boîte à eau Download PDF

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Publication number
EP3613983B1
EP3613983B1 EP19192650.0A EP19192650A EP3613983B1 EP 3613983 B1 EP3613983 B1 EP 3613983B1 EP 19192650 A EP19192650 A EP 19192650A EP 3613983 B1 EP3613983 B1 EP 3613983B1
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EP
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Prior art keywords
water tank
sensor
liquid
delivery
piston pump
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EP19192650.0A
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German (de)
English (en)
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EP3613983A1 (fr
Inventor
Jörg-Peter KARRIE
Artem BESPALOV
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Friedrich Wilhelm Schwing GmbH
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Friedrich Wilhelm Schwing GmbH
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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

Definitions

  • the invention relates to a piston pump for thick materials, with at least one delivery cylinder, a delivery piston which can be moved axially in the delivery cylinder and which is connected to a drive via a piston rod, and at least one water tank which is connected to the delivery cylinder and through which the piston rod passes between the delivery cylinder and the Drive is arranged, and a method for determining and monitoring the piston wear in such a piston pump.
  • Such piston pumps are out DE 38 34 678 A1 , DE 10 2005 039 238 B4 and also off DE 10 2007 050 279 B3 known.
  • Piston pumps for pumping thick materials, such as concrete have been used on construction sites for a long time. As a rule, they are designed as hydraulically operated piston pumps, usually with two cylinders, whereby the concrete is conveyed through hoses or pipes.
  • the DE 10 2010 019207 A1 discloses a measuring head for determining the composition of a mixture, in particular a concrete suspension, comprising a transmitter head for emitting light waves into the mixture and a receiver head for detecting at least some of the emitted light waves, and a fluid nozzle which is arranged to a fluid displacing the mixture into an area between the transmitter head and the receiver head.
  • two hydraulic drive cylinders are used to drive them, the pistons of which are rigidly connected—each individually—to the delivery pistons of the delivery cylinders via piston rods.
  • the delivery cylinders of the known piston pumps can usually be driven in push-pull, which means that their delivery pistons perform filling and delivery strokes alternately.
  • the concrete is taken from a concrete feed container into the pump chambers of the delivery cylinders and conveyed from these into a single delivery line.
  • the delivery line is connected to the pump chambers of the delivery cylinders via a diverter tube, with the diverter tube connecting the delivery line alternately to the two delivery cylinders in time with the delivery strokes.
  • the delivery pistons are in direct contact with the concrete to be delivered.
  • the pistons in particular the piston seals, have to withstand high loads in concrete pumps and are subject to corresponding wear.
  • water lubrication of the delivery cylinders behind the pistons is known in concrete pumps.
  • a water tank through which the piston rods pass is arranged between the delivery cylinders and their hydraulic drive cylinders and is connected to both delivery cylinders.
  • the pump is in operation, the water in the water tank oscillates back and forth between the two delivery cylinders. The water washes around the delivery pistons on the back. The water lubricates the delivery pistons and cools the delivery cylinders.
  • the water flushing that takes place via the water box has the additional function of loosening and rinsing off any concrete that may have been pumped through if the sealing lips are damaged.
  • the concrete that overflows due to ultimately unavoidable leaks in the delivery plungers can settle in the water tank and is regularly removed from this, for example when the water is changed.
  • the operator of the machine uses the turbidity of the water to determine whether the delivery pistons are still tight or whether they need to be replaced soon. If, for example, the pumping piston wears heavily during long pumping activities without breaks or water changes, this damage may initially go unnoticed. In extreme cases, this can lead to failure of the pump because if the pumping process is interrupted and the concrete can no longer be pressed out of the delivery line due to leaking delivery pistons, the concrete in the delivery line hardens so that it has to be replaced.
  • the wear on the delivery piston or the Conveying cylinders, especially the seals arranged in between, of the piston pump can be detected easily and at an early stage, so that preventive maintenance measures can be initiated in good time.
  • a sensor device that is suitable for detecting a change in the composition of the liquid in the water tank, it can be easily determined whether thick matter delivered by the piston pump has got into the water tank. From this, indications of the wear of the delivery piston or the delivery cylinder of the piston pump and of the seal arranged between the delivery cylinder and the delivery piston can be derived.
  • the water in the water tank is only slightly contaminated by the pumped viscous substance during the pumping process with the delivery pistons intact.
  • the resulting contaminated liquid should therefore be drained off and renewed regularly, for example at the end of a working day. If there is an increased change in composition, this is detected by the sensor device, as a result of which a measured value that is easy to record and directly dependent on the wear is provided.
  • the pistons and cylinders of the piston pump can be replaced in good time in a maintenance measure before the piston pump fails due to wear.
  • the sensor device is designed to determine the proportion of thick matter that has gotten from the delivery cylinder into the water tank based on the composition of the liquid in the water tank.
  • the proportion of thick matter that has entered the water tank from the delivery cylinder is a good indication of the wear of the delivery piston or the delivery cylinder, since the composition of the liquid in the water tank is changed by the thick matter that has got into the water tank due to wear. A permanent monitoring of the wear on the delivery piston and the delivery cylinder is thus possible.
  • the proportion of thick matter that has reached the water tank is determined using an indicator substance that is added to the thick matter before it enters the delivery cylinder by means of an admixture device of the piston pump.
  • an indicator substance that is added to the thick matter before it enters the delivery cylinder by means of an admixture device of the piston pump.
  • a substance for example common salt, can be added to the pumped medium using a Admixing device are added in order to achieve the desired measurable change in the water through the pumping medium in the event of a leak in the delivery piston.
  • Even a small addition of table salt is a sufficient indicator that gives indications of the wear and tear that is present.
  • the added indicator substance is preferably inert, which means that it does not change or influence the chemical or physical properties of the viscous substance or the pumped medium as far as possible.
  • a particularly advantageous embodiment of the invention relates to the fact that it is designed as a two-cylinder piston pump with two delivery cylinders that work in push-pull and are driven separately, with the two delivery cylinders being connected to one another via the water tank.
  • the piston pump can advantageously be designed as a tandem pump, with the water oscillating back and forth between the delivery cylinders during operation of the piston pump and thus ensuring the lubrication and flushing of the piston guide surface.
  • the piston pump is expediently driven by two hydraulic drive cylinders connected to the piston rods, which are designed as double-acting differential cylinders and drive the pistons in push-pull to alternately execute filling and delivery strokes.
  • a particularly advantageous embodiment of the invention provides that the sensor device or a sensor comprised by the sensor device is attached to a point of the water tank which is flushed by the liquid moved through the water tank by the delivery cylinders working in push-pull.
  • the sensor device or a sensor comprised by the sensor device can be kept free of deposits of the thick matter in the water tank at such a flushed point of the water tank, so that a change in the composition of the liquid in the water tank can be reliably detected.
  • the piston pump is usually mounted at an angle in the vehicle frame.
  • the sensor device or a sensor included in the sensor device should be installed in a place where the sludge does not collect as far as possible, for example close to the drives.
  • the sensor or the sensor device should not get in the way during maintenance work in the water tank, for example when replacing the delivery pistons.
  • an advantageous embodiment of the invention provides that the sensor device or a sensor comprised by the sensor device is attached to a cover of the water tank. Attaching the sensor device or a sensor included in the sensor device to the cover of the water tank has the advantage that the sensor device or the sensor can be retrofitted by replacing a conventional cover with a cover with a sensor device or sensor.
  • the sensor device or the sensor can, for example, also be screwed into the cover from the outside through a threaded opening, so that the sensor device or the sensor can be removed before the cover is removed.
  • care must be taken to ensure that the sensor device or the sensor is immersed deep enough in the liquid, even if the liquid level is low.
  • the sensor device comprises a sensor for determining the pH value of the liquid in the water tank
  • the sensor device Changes in the composition of the liquid in the water tank are detected based on the pH value of the liquid determined by the sensor. If the pH value of the liquid changes as a result of the contamination of the water in the water tank with the thick substance, this can be easily detected using a sensor which is designed to determine the pH value.
  • Fresh concrete is strongly alkaline, so the pH value measurement is a suitable indicator for early detection of the disproportionate penetration of thick matter via the delivery pistons or delivery cylinders that are leaking due to wear.
  • the sensor device comprises a sensor for determining the redox voltage of the liquid in the water tank, the sensor device detecting the change in composition of the liquid in the water tank using the redox voltage of the liquid determined by the sensor. If the contamination of the water in the water tank with the thick substance causes a change in the redox potential of the liquid, this can be easily detected using a sensor that is designed to determine the redox voltage.
  • the redox voltage of the liquid is a suitable indicator for early detection of the disproportionate penetration of the thick substance via the delivery pistons or delivery cylinders that are leaking due to wear.
  • the sensor device includes a sensor for determining the turbidity of the liquid in the water tank, the sensor device detecting the change in composition of the liquid in the water tank based on the turbidity of the liquid determined by the sensor. If the liquid becomes cloudy due to the contamination of the water in the water tank with the thick matter, this can be easily detected using a sensor that is designed to determine the cloudiness. The turbidity of the liquid can then be a suitable indicator for early detection of the disproportionate penetration of a turbid thick matter due to the wear of the delivery pistons or delivery cylinders.
  • the sensor device comprises a sensor for determining the conductivity of the liquid in the water tank is particularly advantageous, with the sensor device detecting the change in composition of the liquid in the water tank using the conductivity of the liquid determined by the sensor.
  • the chemical components of the high-density material especially the hydroxides contained in fresh concrete, cause a significant change in the conductivity of the liquid in the water tank if the delivery piston is leaking.
  • the change in conductivity in relation to the contamination of the water with sludge is linear over a large range, so that the conductivity is a very good indicator of a leaking delivery piston.
  • the conductivity of the liquid in the water tank is therefore a suitable indicator for early detection of the disproportionate penetration of this thick substance via the delivery pistons or delivery cylinders that are leaking due to wear. Sensors for measuring conductivity are very robust against environmental influences.
  • a particularly advantageous embodiment of the invention provides that the sensor for determining the conductivity works inductively or conductively.
  • conductivity sensors a distinction must be made between conductive and inductive sensors.
  • Inductive sensors which work with an excitation coil and a receiver coil, each housed in a plastic housing, are particularly resistant to environmental influences and are almost maintenance-free. Deposits and films of fat or oil on the sensor surface have practically no influence on the measuring accuracy.
  • the inductive conductivity sensor preferably consists of a hermetically sealed body made of polypropylene (PP) or polyvinylidene fluoride (PVDF), inside which the two measuring coils are arranged.
  • PP polypropylene
  • PVDF polyvinylidene fluoride
  • conductive sensors represent the simplest design of a conductivity sensor.
  • the sensor consists of two electrodes and a shaft that fixes the two electrodes. A constant voltage is applied between the electrodes. The current flowing through the liquid in the water box provides the measurement signal. Furthermore, conductive four-electrode sensors are particularly suitable. Such a sensor contains two pairs of electrodes, one impressing a measuring current, which flows over the liquid in the water box, the other pair measures the voltage drop across the measuring section in the water box. A particular advantage is that conductive sensors are insensitive to interfering resistances caused, for example, by long connecting cables, dirt or polarization.
  • the wear on the delivery pistons or the delivery cylinders, in particular on the seals arranged between them can be derived and thus recognized early on, so that preventive maintenance measures can be initiated in good time be able.
  • the evaluation of the recorded change in composition includes a qualitative and/or quantitative determination of the transfer of thick matter from the at least one delivery cylinder into the water tank. Based on qualitative and/or quantitative determination of the transfer of thick matter from the at least one delivery cylinder into the water tank, the wear can be evaluated via the change in composition, so that early conclusions about wear can be drawn and necessary maintenance measures can be initiated.
  • An advantageous embodiment of the method provides that an indicator substance is added to the thick matter, which is detected to determine the transfer. By burying the indicator substance, the transferred thick matter can be determined in the liquid in the water tank even if the contamination of the water in the water tank by the pumped medium or the thick matter does not lead to any measurable change in the liquid.
  • a piston wear warning is generated when a threshold value for the derived wear is reached.
  • a threshold value can be selected by means of a suitably set wear mark, for example a predefined voltage or current value, which triggers an automatic piston wear warning, which enables preventive maintenance measures before the piston pump fails. If the water in the water tank is not replaced over a long period of time when using the piston pump, this can lead to the measurement signal exceeding a threshold value although the delivery pistons are still intact, because a certain degree of contamination of the water occurs during the pumping process, even with new pistons. For this reason, it is advantageous to take a time component into account. Only a disproportionately fast change in composition can be an indication of a worn delivery piston. As an alternative to the time, the number of pump strokes or the amount of thick matter pumped or the pumping pressure can also be taken into account.
  • a truck-mounted concrete pump is shown.
  • the truck-mounted concrete pump 102 shown has a large manipulator with an articulated mast 103 that can be folded out, which comprises a turntable 105 that can be rotated about a vertical axis 104 and a plurality of mast segments 106 .
  • the mast segments 106 are pivotally connected to the respective adjacent mast segment 106 or the turntable 105 via articulated joints 107 .
  • the articulated mast 103 has drive units, preferably in the form of hydraulic cylinders.
  • the turntable 105 of the articulated mast 103 is rotatably connected to the chassis 108 of the truck-mounted concrete pump 102 .
  • the tilting moment generated by the unfolding and the movement of the articulated mast 103 is supported by the chassis 108 on a standing surface on the ground 110 which is enlarged by means of support arms 109 .
  • the chassis 108 has a plurality of outriggers 109, which can be fully or partially folded out or extended from a driving position in which the outriggers 109 do not protrude beyond the external dimensions of the chassis into a support position.
  • a piston pump 1 according to the invention serving as a concrete pump is arranged in the rear area of the truck-mounted concrete pump designed as a vehicle. This piston pump 1, which has already been described in more detail below, can be used to pour concrete along the folded-out articulated mast 103 promote through conveyor lines, not shown, and distribute by means of mast movements of the articulated mast 103 at the end of the mast.
  • FIG. 1 is a piston pump according to the invention according to FIG figure 1 shown in a plan view.
  • the piston pump 1 is designed as a tandem pump. Ie the delivery cylinders 2, 3 arranged next to one another work in push-pull. For this purpose, the two delivery cylinders 2, 3 are driven via separate drives 8, 9 to alternately execute filling and delivery strokes.
  • the drives 8, 9 are preferably designed as hydraulic cylinders.
  • axially movable delivery pistons 4, 5 are arranged, which are each connected to the associated drives 8, 9 via piston rods 6, 7. It can also be seen that the two delivery cylinders 2 , 3 are connected to one another via a water tank 10 .
  • This water tank 10 is penetrated by the piston rods 6, 7 and is arranged between the delivery cylinders 2, 3 and the drives 8, 9.
  • a high-density feed container 13 from which the high-density material 100 is transferred into the pump chambers of the delivery cylinders 2, 3 and conveyed from them into a single delivery line 14.
  • the delivery line 14 is connected via a diverter tube 15 to the pump chambers of the delivery cylinders 2, 3, the diverter tube 15 alternately connecting the delivery line 14 to the two delivery cylinders 2, 3 in time with the delivery strokes.
  • a sensor device 11 for detecting a change in the composition of the liquid 101 in the water tank 10.
  • This sensor device 11 is designed to determine the proportion of the thick matter 100 that has reached the water tank 10 from the delivery cylinders 2, 3 on the basis of the composition of the liquid in the water tank 10 and to determine the liquid 101 located in the delivery cylinders 2, 3 on the rear side of the piston.
  • the proportion of thick matter 100 that has reached water tank 10 can also be determined using an indicator substance, which is added to thick matter 100, preferably before it enters delivery cylinders 2, 3, by means of an admixture device (not shown), which is assigned, for example, to thick matter feed hopper 13 and the indicator substance is added to the thick stock 100 fed here.
  • the sensor device 11 can have a sensor 11 for determining the pH value and/or the redox voltage and/or the Turbidity and / or the conductivity of the liquid 101 in the water tank 10 include.
  • FIG 3 is the piston pump according to figure 2 in an embodiment which provides for the arrangement of the sensor device 11 or of a sensor 11 comprised by the sensor device at a point in the water tank 10 which is flushed by the liquid 101 moved through the water tank 10 by the delivery cylinders 2, 3 working in push-pull.
  • the sensor device 11 or a sensor 11 comprised by the sensor device can be kept essentially free of deposits of the thick matter 100 partially located in the water tank 10, so that a change in the composition of the liquid 101 located in the water tank 10 is reliably detected via the sensor device 11 can be detected.
  • piston pump 1 is used as in figure 1 visible, mounted with an inclination in the vehicle frame 108.
  • mud 16 can be seen at the sloping bottom of the water tank 10. If sludge forms in the water tank 10, the sensor device 11 or a sensor 11 included in the sensor device should be installed at the location shown, since the sludge 16 does not collect in the vicinity of the drives 8, 9 here. At this point, the sensor 11 or the sensor device 11 is not in the way even during maintenance work in the water tank 10, for example when replacing the delivery pistons 4, 5.
  • the senor 11 can protrude through an opening or bore into the water tank 10 or it can also be mounted at a suitable position in the water tank 10, with the sensor cable then being routed out of the water tank 10, e.g. via an opening in or on the cover 12 is led out to an evaluation electronics.
  • the arrangement of the sensor 10 between the piston rods 6.7 on the side of the delivery cylinders 2, 3 is possible. This is an area where the water is particularly agitated by the piston movements.
  • FIG 4 is the piston pump 1 according to figure 2 shown in an embodiment, which the arrangement of the sensor device 11 or one of the Sensor device comprised sensor 11 on a cover 12 of the water tank 10 provides.
  • the sensor device 11 or the sensor 11 shown here is attached to the cover 12 and protrudes into the liquid 101 in the water tank 10 from above. It should be noted here that the sensor device 11 dips deep enough into the liquid 101, even if the liquid level in the water tank 10 should be low.
  • the attachment of the sensor device 11 in the cover 12 of the water tank 10 has the advantage that by replacing a conventional cover with a cover 12 with a sensor device 11, the sensor device 11 can be retrofitted.
  • the figure 5 shows a diagram of a series of measurements in which the conductivity of the liquid 101 in the water tank 10 was recorded conductively and the total proportion of cement dissolved in water was determined. This makes it very easy to draw conclusions about the proportion of thick matter 100 that has reached the water tank 10 from the delivery cylinder 2, 3 based on the conductivity of the liquid 101 in the water tank 10.
  • H2O in g cement in g conductivity 100 0.20 487 100 0.40 806 100 0.60 1194 100 0.80 1360 100 1.00 1460 100 1.20 1687 100 1.40 1788 100 1.60 1979 100 1.80 2070 100 2.00 2190 100 2.20 2280 100 2.40 2380 100 2.60 2510 100 2.80 2560 100 3.00 2690

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (14)

  1. Pompe à piston (1) pour matières épaisses (100), comprenant
    - au moins un cylindre de transport (2, 3),
    - un piston de transport (4, 5) mobile axialement dans le cylindre de transport (2, 3), qui est relié à un entraînement (8, 9) par l'intermédiaire d'une tige de piston (6, 7) et
    - au moins un réservoir d'eau (10) relié au cylindre de transport (2, 3), qui est agencé entre le cylindre de transport (2, 3) et l'entraînement (8, 9), traversé par la tige de piston (6, 7),
    caractérisé en ce que
    au moins un appareil de détection (11) est prévu pour détecter un changement de composition du liquide (101) se trouvant dans le réservoir d'eau (10), l'appareil de détection (11) étant configuré pour déterminer la proportion de matière épaisse (100) parvenue dans le réservoir d'eau (10) depuis le cylindre de transport (2, 3) à l'aide de la composition du liquide (101) se trouvant dans le réservoir d'eau (10).
  2. Pompe à piston (1) selon la revendication 1, caractérisée en ce que la proportion de matière épaisse (100) parvenue dans le réservoir d'eau (10) est déterminée à l'aide d'une substance indicatrice qui est ajoutée à la matière épaisse (100) avant l'entrée dans le cylindre de transport (2, 3) au moyen d'un appareil de mélange de la pompe à piston (1).
  3. Pompe à piston (1) selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est configurée sous forme de pompe à piston à deux cylindres, avec deux cylindres de transport (2, 3) fonctionnant en opposition et entraînés séparément, les deux cylindres de transport (2, 3) étant reliés entre eux par l'intermédiaire du réservoir d'eau (10).
  4. Pompe à piston (1) selon la revendication 3, caractérisée en ce que l'appareil de détection (11) ou un capteur compris par l'appareil de détection (11) est disposé à un emplacement du réservoir d'eau (10) qui est baigné par le liquide (101) déplacé à travers le réservoir d'eau (10) par les cylindres de transport (2, 3) fonctionnant en opposition.
  5. Pompe à piston (1) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'appareil de détection (11) ou un capteur compris par l'appareil de détection (11) est disposé sur un couvercle (12) du réservoir d'eau (10).
  6. Pompe à piston (1) selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'appareil de détection (11) comprend un capteur pour déterminer le pH du liquide (101) se trouvant dans le réservoir d'eau (10), l'appareil de détection (11) détectant le changement de composition du liquide (101) se trouvant dans le réservoir d'eau (10) à l'aide du pH du liquide (101) déterminé par le capteur.
  7. Pompe à piston (1) selon l'une quelconque des revendications 1 à 6, caractérisée en ce que l'appareil de détection (11) comprend un capteur pour déterminer le potentiel redox du liquide (101) se trouvant dans le réservoir d'eau (10), l'appareil de détection (11) détectant le changement de composition du liquide (101) se trouvant dans le réservoir d'eau (10) à l'aide du potentiel redox du liquide (101) déterminé par le capteur.
  8. Pompe à piston (1) selon l'une quelconque des revendications 1 à 7, caractérisée en ce que l'appareil de détection (11) comprend un capteur pour déterminer la turbidité du liquide (101) se trouvant dans le réservoir d'eau (10), l'appareil de détection (11) détectant le changement de composition du liquide (101) se trouvant dans le réservoir d'eau (10) à l'aide de la turbidité du liquide (101) déterminée par le capteur.
  9. Pompe à piston (1) selon l'une quelconque des revendications 1 à 8, caractérisée en ce que l'appareil de détection (11) comprend un capteur pour déterminer la conductivité du liquide (101) se trouvant dans le réservoir d'eau (10), l'appareil de détection (11) détectant le changement de composition du liquide (101) se trouvant dans le réservoir d'eau (10) à l'aide de la conductivité du liquide (101) déterminée par le capteur.
  10. Pompe à piston (1) selon la revendication 9, caractérisée en ce que le capteur pour déterminer la conductivité fonctionne de manière inductive ou conductive.
  11. Procédé de détermination et de surveillance de l'usure du piston d'une pompe à piston (1) selon l'une quelconque des revendications précédentes, comprenant les étapes suivantes :
    - la détection d'un changement de composition du liquide (101) se trouvant dans le réservoir d'eau (10),
    - l'évaluation du changement de composition détecté,
    - la déduction de l'usure du piston à partir du résultat de l'évaluation du changement de composition détecté.
  12. Procédé selon la revendication 11, caractérisé en ce que l'évaluation du changement de composition détecté comprend une détermination qualitative et/ou quantitative du passage de matière épaisse (100) depuis l'au moins un cylindre de transport (2, 3) dans le réservoir d'eau (10).
  13. Procédé selon la revendication 12, caractérisé en ce qu'une substance indicatrice est ajoutée à la matière épaisse (100), laquelle est détectée pour déterminer le passage.
  14. Procédé selon l'une quelconque des revendications 11 à 13, caractérisé en ce qu'un avertissement d'usure du piston est produit lorsqu'une valeur de seuil est atteinte pour l'usure dérivée.
EP19192650.0A 2018-08-23 2019-08-20 Pompe à piston pour matières épaisses pourvue de boîte à eau Active EP3613983B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018120582.1A DE102018120582A1 (de) 2018-08-23 2018-08-23 Kolbenpumpe für Dickstoffe mit Wasserkasten

Publications (2)

Publication Number Publication Date
EP3613983A1 EP3613983A1 (fr) 2020-02-26
EP3613983B1 true EP3613983B1 (fr) 2022-10-05

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DE (1) DE102018120582A1 (fr)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE609281C (de) 1932-12-24 1935-02-11 Willy Siebert Betonpumpe
DE1780902U (de) 1958-10-08 1959-01-08 Friedrich Wilh Schwing Hydraulische kolbenpumpe zur foerderung breiiger oder plastischer massen.
US3146721A (en) 1960-08-08 1964-09-01 Schwing Friedrich Wilhelm Hydraulic piston pump for the pumping of viscous pulpy or plastic substances
DE1296002B (de) 1962-02-14 1969-05-22 Gartner & Co J Foerdereinrichtung mit Kolbenpumpe zum Foerdern von dickfluessigen Massen, insbesondere Beton
DE8705353U1 (de) 1987-04-10 1987-06-19 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Vorrichtung für Kolbenpumpen, insbesondere für den Feststofftransport
EP0265748A2 (fr) 1986-10-31 1988-05-04 Trinity Industrial Corporation Dispositif d'alimentation en matériau de revêtement
DE3834678A1 (de) 1988-10-12 1990-04-19 Putzmeister Maschf Verfahren und vorrichtung zur korrektur des kolbenhubs in den zylindern einer zweizylinder-dickstoffpumpe
US5332366A (en) 1993-01-22 1994-07-26 Schwing America, Inc. Concrete pump monitoring system
WO1997040969A1 (fr) 1996-04-30 1997-11-06 Cifa S.P.A. Appareil destine a delivrer un flux constant de beton contenant des additifs
WO1998000640A1 (fr) 1996-06-28 1998-01-08 Texaco Development Corporation Systeme de surveillance de panne pour pompe a diaphragme
DE102004013142A1 (de) 2004-03-17 2005-10-06 Sonplas Gmbh Pumpvorrichtung für ein Fluid
DE102007050279B3 (de) 2007-10-18 2009-02-12 Schwing Gmbh Betonpumpe mit Kolbenschmierung
DE102008007069A1 (de) 2008-01-31 2009-08-06 Putzmeister Concrete Pumps Gmbh Zylinder-/Kolbeneinheit mit in der Zylinderwandung angeordneter Muffe
DE102010019207A1 (de) 2009-11-23 2012-01-19 Walter Werne Messkopf
DE102005039238B4 (de) 2005-08-19 2016-05-25 Schwing Gmbh Betonfördervorrichtung mit einem Wasserkasten

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Publication number Priority date Publication date Assignee Title
DE102017112110A1 (de) * 2017-06-01 2018-12-06 Hammelmann GmbH Plungerpumpe sowie Verwendung einer Plungerpumpe

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DE609281C (de) 1932-12-24 1935-02-11 Willy Siebert Betonpumpe
DE1780902U (de) 1958-10-08 1959-01-08 Friedrich Wilh Schwing Hydraulische kolbenpumpe zur foerderung breiiger oder plastischer massen.
US3146721A (en) 1960-08-08 1964-09-01 Schwing Friedrich Wilhelm Hydraulic piston pump for the pumping of viscous pulpy or plastic substances
DE1296002B (de) 1962-02-14 1969-05-22 Gartner & Co J Foerdereinrichtung mit Kolbenpumpe zum Foerdern von dickfluessigen Massen, insbesondere Beton
EP0265748A2 (fr) 1986-10-31 1988-05-04 Trinity Industrial Corporation Dispositif d'alimentation en matériau de revêtement
DE8705353U1 (de) 1987-04-10 1987-06-19 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz Vorrichtung für Kolbenpumpen, insbesondere für den Feststofftransport
DE3834678A1 (de) 1988-10-12 1990-04-19 Putzmeister Maschf Verfahren und vorrichtung zur korrektur des kolbenhubs in den zylindern einer zweizylinder-dickstoffpumpe
US5332366A (en) 1993-01-22 1994-07-26 Schwing America, Inc. Concrete pump monitoring system
WO1997040969A1 (fr) 1996-04-30 1997-11-06 Cifa S.P.A. Appareil destine a delivrer un flux constant de beton contenant des additifs
WO1998000640A1 (fr) 1996-06-28 1998-01-08 Texaco Development Corporation Systeme de surveillance de panne pour pompe a diaphragme
DE102004013142A1 (de) 2004-03-17 2005-10-06 Sonplas Gmbh Pumpvorrichtung für ein Fluid
DE102005039238B4 (de) 2005-08-19 2016-05-25 Schwing Gmbh Betonfördervorrichtung mit einem Wasserkasten
DE102007050279B3 (de) 2007-10-18 2009-02-12 Schwing Gmbh Betonpumpe mit Kolbenschmierung
DE102008007069A1 (de) 2008-01-31 2009-08-06 Putzmeister Concrete Pumps Gmbh Zylinder-/Kolbeneinheit mit in der Zylinderwandung angeordneter Muffe
DE102010019207A1 (de) 2009-11-23 2012-01-19 Walter Werne Messkopf

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DE102018120582A8 (de) 2020-04-09
EP3613983A1 (fr) 2020-02-26

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