EP2886859A2 - Pompe de dosage destinée à acheminer des milieux pâteux ayant des exigences élevées relatives à l'hygiène et la sécurité de fonctionnement - Google Patents

Pompe de dosage destinée à acheminer des milieux pâteux ayant des exigences élevées relatives à l'hygiène et la sécurité de fonctionnement Download PDF

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Publication number
EP2886859A2
EP2886859A2 EP14003758.1A EP14003758A EP2886859A2 EP 2886859 A2 EP2886859 A2 EP 2886859A2 EP 14003758 A EP14003758 A EP 14003758A EP 2886859 A2 EP2886859 A2 EP 2886859A2
Authority
EP
European Patent Office
Prior art keywords
sensors
pump
displacement sensor
pump according
hose
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
EP14003758.1A
Other languages
German (de)
English (en)
Other versions
EP2886859A3 (fr
EP2886859B1 (fr
Inventor
Jürgen Schonlau
Markus Ermert
Wolfgang Hamm
Marc Leinweber
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.)
Thomas Magnete GmbH
Original Assignee
Thomas Magnete GmbH
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Filing date
Publication date
Application filed by Thomas Magnete GmbH filed Critical Thomas Magnete GmbH
Publication of EP2886859A2 publication Critical patent/EP2886859A2/fr
Publication of EP2886859A3 publication Critical patent/EP2886859A3/fr
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Publication of EP2886859B1 publication Critical patent/EP2886859B1/fr
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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
    • 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
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Definitions

  • the invention relates to a peristaltic pump according to the preamble of the first claim.
  • Peristaltic pumps are known and are preferably used for the promotion of pasty media, especially in medicine and in the care sector.
  • the pamphlets DE 741972 and EP 1 317 626 show exemplary peristaltic pumps.
  • the function of the peristaltic pump has to be monitored in many applications, such as suction side disturbances, pressure side faults, air pockets in the medium, closing the hood of the working chamber, opening the hose clamp and disturbing the drive system.
  • several sensors are used, which are known as such.
  • the number of sensors affects the cost of the pump and the failure probability of the sensors, in some applications the probability of failure of the sensors is higher than the probability of failure of the pump drive.
  • the hose has to be changed regularly and the working area where the hose is deformed has to be cleaned regularly.
  • the sensors are arranged in close proximity to the hose and thus make it more difficult to change the hose and to clean the working space.
  • the solution of the problem is described by the characterizing features of the first claim, the dependent claims form the technical teaching.
  • the last claim is a secondary claim and describes a method for operating a pump according to the invention.
  • the replacement of the hose is facilitated primarily by the fact that the sensors are arranged behind a membrane outside the working space and that the rollers for deformation of the hose are behind this membrane.
  • the hood When replacing only the hood is opened, removed the old hose with its hose clamp, inserted the new hose with its hose clamp and closed the hood.
  • the hose clamp When closing the hood, the hose clamp is opened because a functional surface of the hood pushes the hose clamp against a plunger and this plunger opens the hose clamp.
  • the membrane also facilitates the cleaning of the working space considerably, because thereby the surfaces to be cleaned have only a few structural elements.
  • the joint arrangement of the sensors behind the membrane the advantageous arrangement of all sensors is facilitated on a common board.
  • Another advantage for the design of the pump is obtained if one also arranges the electrical control for powering the sensors, for the evaluation of the sensor signals and for generating messages on said common board. It is advantageous to connect all sensors with a common electrical control, but it may also be necessary to divide the electrical control into several modules that are electrically and signal technically connected. The number of sensors can be reduced by using the mutual influence of the states to be monitored.
  • the suction-side pressure in the hose affects the tension of the suction-side arranged hose clamp, and a measurement of this tension allows a conclusion on the suction-side pressure.
  • Another example of the use of mutual interference is the effect of the pressures in the hose in front of and behind the rollers on the distance of the rollers from the bearing of the hose, if the sum of the pressures is too high, the said distance increases.
  • the described mutual influences can also be used instead of reducing the number of sensors to monitor the sensors themselves or to improve the safety of the pump monitoring.
  • the influences must be known, they can be measured during the development of the pump and then store in the form of tables or functions in the electrical control and use in the evaluation.
  • the mutual influences depend on the mass and the viscosity of the medium to be pumped, the tables or functions must take this into account.
  • the pump according to the invention can be used in medical technology and in the care sector for the delivery and metering of highly viscous or pasty media.
  • Fig. 1 shows the working space of the pump according to the invention.
  • a pump according to Fig. 1 serves to convey a liquid or pasty medium, which is surrounded by a in a working space (5) mounted elastic hose (1).
  • the tube is deformed by moving rollers (2) and a plurality of sensors monitors the correct operation of the pump.
  • rollers with their drive (3) and the sensors are separated by a membrane (4) of the working space (5), so that the working space can be easily and thoroughly cleaned.
  • the signals of the sensors are processed by an electrical drive (27), not shown, and the sensors are preferably arranged on a common board (28).
  • the common board (28) advantageously also contains the electrical control (27) for powering the sensors, for evaluating the sensor signals and for reporting faults.
  • the plunger (13) opens the hose clamp (14) when the movable hood (6) is closed because a surface (23) on the hood presses the hose clamp against the plunger. This ensures that the hose clamp is only permanently opened when the hood is closed.
  • the path sensor (12) for monitoring the hose clamp can check the function of the displacement sensor (15) for monitoring the suction side of the hose or take over when a closing spring (24) of the hose clamp (14) with a compression spring (25) of the plunger (13) and with that elastic hose (1) occupy a force equilibrium in the closed state of the hood (6), in a position of the plunger (13), which is not determined by a mechanical stop. Because of the force-determined variable position of the plunger (13), the pressure in the hose affects the force balance and the position of the plunger.
  • the path sensor (19) for monitoring the position of the carrier (21) can check the function of the displacement sensor (17) for monitoring the pressure side and / or the displacement sensor (12) for monitoring the hose clamp or take over when the carrier (21) acted upon compression spring (26) during operation of the pump with the elastic tube occupies a force equilibrium, in a position of the carrier (21), which is not determined by a mechanical stop. Because of the force-determined variable position of the wearer, the pressure in the hose affects the said force balance and the position of the carrier (21).
  • the signals of the displacement sensors (15), (17) and (19) are advantageously processed with each other in order to obtain information about disturbances of the pump with greater certainty and / or to detect the failure of one of the sensors.
  • the electric drive (27) contains tables or mathematical functions determined in the development phase of the pump, which describe desired states of the sensors as a function of the density and the viscosity of the pumped medium.
  • the electrical control is configured to report detected disturbances by electrical signals to a higher-level control or optical displays.
  • the electrical control is preferably equipped to take over the tasks described with a microcontroller and an information memory contained therein or connected to the tables, the adjustment data and the control program.
  • the target states of several sensors of the pump depending on the density and the viscosity of the pumped medium describe and in the operation of the pump
  • the measured values of the sensors of the electrical control (27) with the above tables or mathematical functions are compared, with failures or malfunctions of individual sensors are detected and reported or disturbances in the operation of the pump with greater certainty than the Evaluation of individual sensors are detected and reported.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Reciprocating Pumps (AREA)
EP14003758.1A 2013-12-09 2014-11-08 Pompe de dosage destinée à acheminer des milieux pâteux ayant des exigences élevées relatives à l'hygiène et la sécurité de fonctionnement Active EP2886859B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310020560 DE102013020560B3 (de) 2013-12-09 2013-12-09 Dosierpumpe zur Förderung pastöser Medien mit hohen Anforderungen an die Hygiene und die Betriebssicherheit

Publications (3)

Publication Number Publication Date
EP2886859A2 true EP2886859A2 (fr) 2015-06-24
EP2886859A3 EP2886859A3 (fr) 2016-03-09
EP2886859B1 EP2886859B1 (fr) 2019-04-17

Family

ID=51900688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14003758.1A Active EP2886859B1 (fr) 2013-12-09 2014-11-08 Pompe de dosage destinée à acheminer des milieux pâteux ayant des exigences élevées relatives à l'hygiène et la sécurité de fonctionnement

Country Status (2)

Country Link
EP (1) EP2886859B1 (fr)
DE (1) DE102013020560B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109826779A (zh) * 2019-03-19 2019-05-31 潘声田 腐蚀性液体的高安全性输送工艺
CN109826780A (zh) * 2019-03-19 2019-05-31 潘声田 基于沉浸波推式对腐蚀性液体进行抽取的压力泵

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015005286A1 (de) 2015-04-25 2016-10-27 Thomas Magnete Gmbh Vorrichtung zum Fördern und Dosieren mit einer Signaleinrichtung
DE102015011423A1 (de) 2015-09-01 2017-03-02 Thomas Magnete Gmbh Schlauchdrucksensor und Verfahren zum Betrieb des Schlauchdrucksensors
DE102016009596B4 (de) 2016-08-06 2018-05-30 Thomas Magnete Gmbh Pumpenaggregat mit Drucksensoren und Verfahren zum Betrieb des Pumpenaggregats

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741972C (de) 1942-01-29 1944-11-17 Roger Reymond Schlauchpumpe fuer medizinische Zwecke
EP1317626A1 (fr) 2000-09-14 2003-06-11 Jan W. Beenker Procede et machine pour le transport de substances

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3591319A (en) * 1969-03-17 1971-07-06 Scientific Industries Flow conduit protective member for peristaltic pump
DE2855634A1 (de) * 1978-12-22 1980-06-26 Ara Werk Kraemer Gmbh & Co Verfahren und vorrichtung zum pumpen, insbesondere dosieren, von pastoesen bis fluessigen massen mittels einer schlauchpumpe
GB2285837B (en) * 1994-01-24 1998-05-13 Varian Australia Peristaltic pump
DE19745999A1 (de) * 1997-10-20 1999-04-22 Horst Jungkeit Modulare Miniaturschlauchpumpe zur Förderung von flüssigen Medien
US8852148B2 (en) * 2005-11-01 2014-10-07 Curlin Medical Inc. Infusion pump having function keys
US8052399B2 (en) * 2007-10-18 2011-11-08 Cole-Parmer Instrument Company Peristaltic pump
US8858494B2 (en) * 2008-11-10 2014-10-14 Curlin Medical Inc. Infusion pump assembly having a reverse rotation prevention system and method for operating the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741972C (de) 1942-01-29 1944-11-17 Roger Reymond Schlauchpumpe fuer medizinische Zwecke
EP1317626A1 (fr) 2000-09-14 2003-06-11 Jan W. Beenker Procede et machine pour le transport de substances

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109826779A (zh) * 2019-03-19 2019-05-31 潘声田 腐蚀性液体的高安全性输送工艺
CN109826780A (zh) * 2019-03-19 2019-05-31 潘声田 基于沉浸波推式对腐蚀性液体进行抽取的压力泵

Also Published As

Publication number Publication date
EP2886859A3 (fr) 2016-03-09
EP2886859B1 (fr) 2019-04-17
DE102013020560B3 (de) 2015-04-16

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