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 PDFInfo
- 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
Links
- 235000011837 pasties Nutrition 0.000 title claims abstract description 6
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 claims description 22
- 230000006870 function Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000007620 mathematical function Methods 0.000 claims description 6
- 238000011161 development Methods 0.000 claims description 5
- 230000007257 malfunction Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 description 8
- 230000002572 peristaltic effect Effects 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Images
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)
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)
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)
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)
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)
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 |
-
2013
- 2013-12-09 DE DE201310020560 patent/DE102013020560B3/de active Active
-
2014
- 2014-11-08 EP EP14003758.1A patent/EP2886859B1/fr active Active
Patent Citations (2)
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)
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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