EP0013002A1 - Procédé et dispositif pour le pompage, en particulier le dosage, de produits pâteux ou liquides au moyen d'une pompe à tuyau - Google Patents
Procédé et dispositif pour le pompage, en particulier le dosage, de produits pâteux ou liquides au moyen d'une pompe à tuyau Download PDFInfo
- Publication number
- EP0013002A1 EP0013002A1 EP79105284A EP79105284A EP0013002A1 EP 0013002 A1 EP0013002 A1 EP 0013002A1 EP 79105284 A EP79105284 A EP 79105284A EP 79105284 A EP79105284 A EP 79105284A EP 0013002 A1 EP0013002 A1 EP 0013002A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hose
- pump
- hoses
- housing
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 title claims description 9
- 235000011837 pasties Nutrition 0.000 title claims description 7
- 238000005086 pumping Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 230000002572 peristaltic effect Effects 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 5
- 239000011496 polyurethane foam Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 206010010774 Constipation Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 238000010944 pre-mature reactiony Methods 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 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
- 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
- F04B43/1284—Means for pushing the backing-plate against the tubular flexible member
Definitions
- the invention relates to a method for pumping, in particular dosing, of pasty to liquid compositions by means of a hose pump containing at least one hose, and a hose pump for carrying out the method.
- hose pumps of this type In hose pumps of this type, hoses are pressed against a pressure surface with the aid of pressure rollers, the chambers formed between two pressure rollers being moved in the conveying direction and always being newly formed.
- hose pumps of this type usually only have a very short service life, which is why it is necessary to replace the hoses arranged in the pump from time to time in order to avoid bursting of the hoses and thus contamination of the pump with the masses to be metered.
- the exchange of the hoses can lead to an undesired penetration of air humidity combined with a risk of clogging.
- the invention is based on the object to provide a method of the type mentioned, in which the risk of bursting of the hose or hoses can be prevented by simple means and in particular with very sensitive liquid or pasty masses, a blockage of the pump or dosing device is avoided.
- the invention is characterized in that a hose is used which is more than twice as long as its section running in the pump and in that the hose is displaced in a predetermined hose longitudinal direction in the pump as required.
- the hose is selected to be longer than the section in the pump, in particular the section exposed to pressure, this section can always be renewed, by moving the hose lengthways. It is not necessary to open the system for this. Therefore there is no danger that moisture or other harmful substances come into contact with the masses to be pumped.
- the hose in the conveying direction and then in each case to shorten the output-side end of the hose by approximately the length by which the hose has been moved.
- This export form of the method according to the invention is particularly advantageous when very sensitive reactive masses are pumped or metered.
- a chemical reaction can easily take place in the event of interruptions in operation due to the penetration of atmospheric moisture or atmospheric acid, which can lead to the substances to be pumped becoming solid or even solidifying.
- the mixer is advantageously designed as an inexpensive single-use mixer, so that the very difficult and unpleasant cleaning, particularly in the case of polyurethane foams, is unnecessary.
- the length of the hose which has no interruptions from the storage container to the dispensing position, is generally a multiple, preferably at least 10 times, of the hose section exposed to pressure in the pump.
- the hose length is approx. 1 to 10 m, preferably approx. 3 to 5 m, which also depends, among other things, on how many interruptions in operation, e.g. by a lunch break or overnight, until the respective storage container is completely emptied.
- the hose length can also be significantly longer, e.g. up to 15 m long.
- a fabric-reinforced plastic tube is used as the tube, as it is on the market for technical purposes.
- the fabric insert has the advantage that the chamber volume can be kept constant in the case of several substances to be dosed at the same time, which require increased dosing accuracy.
- a hose pump is advantageously used, in which at least one hose, preferably at least two parallel hoses, is arranged along a wall, and pressure rollers are provided, which can be rolled along the hose while squeezing the hose in the conveying direction, and the hose is detachably held in the pump housing, the hose being at least twice as long as its section running in the pump, the hose running without interruption through the pump and being led out on the inlet and outlet sides of the pump and on at least one side by at least the length the one running in the pump Section survives.
- the hose is preferably held displaceably in its longitudinal direction in the pump housing, in particular can be pulled through the pump.
- the hose is therefore arranged in the pump on an essentially circular arc-shaped path, the radian dimension of which is 180 ° or less.
- an insert made of non-stretchable material is particularly advantageously provided between the pressure rollers and the hoses.
- This intermediate insert which is preferably fixed only at the end opposite to the conveying direction, absorbs thrust forces exerted by the rollers, which point in the conveying direction, so that only essentially radial compressive forces are exerted on the hoses. A planet-like drive of the rollers is therefore unnecessary.
- the pump is preferably equipped with an overpressure device by means of which pressure build-up is avoided in the event of a blockage or kinking of the hose at the end on the delivery side.
- the wall against which the hose is pressed during the rolling movement is advantageously pressed against a stop on the housing under spring loading.
- this housing wall is able to spring away from the pressure rollers, so that the pump can continue to run without the risk of excess pressure.
- the suspension can be provided on the input end and / or on the output side of the wall.
- the wall is advantageously curved approximately coaxially to the circular path of the rollers. If the wall is pressed resiliently in the direction of the rollers, however, it can have a smaller curvature, under certain circumstances even be flat. It is then still ensured that at least one moving pinch point is generated on the hose section located in the pump.
- a hose pump 1 is provided with a housing 2, to which a gear 3 is assigned.
- the gear 3 can be driven with a conventional hand drill.
- a pipe socket 4 is provided on the housing 2 for connecting the drilling machine.
- the pump 1 is used for metering and dispensing the two components for the production of polyurethane foam and is designed as an easy-to-use hand-held device.
- two hoses 5 and 6 are provided which pass through the housing 2 without interruption are passed in parallel and run in a circular arc of approximately 180 ° in the housing.
- the hoses 5 and 6 enter the housing 2 on one side of the pump 1 essentially radially to the pump and on the opposite side essentially in an extension of the entry direction.
- the hoses are held in releasable holders 7, which are arranged on the housing, without narrowing their cross section.
- the outer wall of the housing 2 on the side on which the tubes 5 and 6 extend in an arcuate manner is formed by a bracket 8, the inside of the tubes 5 and 6 facing the interior of which extends essentially in an arcuate shape and is so wide that it is a contact surface for the Forms hoses in the squeezed state.
- the bend of the bracket is approximately 140 °.
- the bracket is pivotally mounted at one end, namely at the output end, about a horizontal pin 9 and at the other end 10 is pressed elastically against a stop 12 of the housing 2 by means of an adjustable spring 11.
- the hoses 5 and 6 are commercially available, self-springing fabric hoses, as are customary for technical purposes. They have the same diameter and the same wall thickness. If a dosage ratio deviating from a one-to-one ratio is desired, hoses with different inner diameters but the same wall thicknesses can be used
- rollers 13 are mounted on a disk 14 which can be driven about a central axis at an angular distance of 90 °, but are not themselves driven.
- the width of the rollers essentially corresponds to the width of the bracket 8.
- a flexible strip 15 made of tensile, non-stretchable material, for example fabric-reinforced rubber or metal.
- the distance of the rollers 13 from the bracket 8 corresponds to the thickness of the strip 15 plus double the wall thickness of the hoses, so that the hose sections, which are located between the rollers 13 and the bracket 8, are squeezed out and do not allow a flow through the mass to be pumped.
- the springs 10 spring up due to the pressure of the accumulated material, so that the pump continues to run without additional pressure generation. This prevents damage caused by overpressures.
- the tubes 5 and 6 have a length of approximately 5 m in the illustrated embodiment of the invention.
- the hoses 5 and 6 only protrude a short distance, the length of which is of the order of the length of the sections 16 and 17, and open directly into a helical mixer 19 for the polyurethane foam formation.
- the mixer 19 has a simple structure and is designed as a disposable item.
- the remaining hose length of the two hoses 5 and 6 is between the inlet side 20 of the housing 2 and two storage containers 21 and 22 for the isocyanate and the polyol component.
- the hose ends are connected directly to these storage containers.
- the liquid components are under a pressure which is sufficient to convey the components through the hoses 5 and 6 into the pump 1. This is supported by the fact that the hoses 5 and 6 spring open themselves, so that the pump 1 still exerts a suction effect.
- the resulting increased service life of the hoses in continuous operation is more than one working day, so that at least one interruption in operation is carried out in each case before the risk of a hose breakage may occur.
- the brackets 7 are loosened and the bracket 8 is pivoted upward, so that the hoses 5 and 6 can be displaced towards the dispensing side by approximately the length of the sections 16 and 17 located in the pump a new hose section of the pressure load was removed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19782855634 DE2855634A1 (de) | 1978-12-22 | 1978-12-22 | Verfahren und vorrichtung zum pumpen, insbesondere dosieren, von pastoesen bis fluessigen massen mittels einer schlauchpumpe |
| DE2855634 | 1978-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0013002A1 true EP0013002A1 (fr) | 1980-07-09 |
Family
ID=6058094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79105284A Withdrawn EP0013002A1 (fr) | 1978-12-22 | 1979-12-20 | Procédé et dispositif pour le pompage, en particulier le dosage, de produits pâteux ou liquides au moyen d'une pompe à tuyau |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0013002A1 (fr) |
| DE (1) | DE2855634A1 (fr) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2514080A1 (fr) * | 1981-10-06 | 1983-04-08 | Elmar Medical Systems Ltd | Pompe peristaltique a stator mobile |
| GB2128262A (en) * | 1982-09-15 | 1984-04-26 | Thomas John Mcneel Robertson | Peristaltic pump or motor |
| AU592760B2 (en) * | 1984-08-07 | 1990-01-25 | Abbott Laboratories | Pressure surface for a peristaltic pump |
| FR2639686A1 (fr) * | 1988-11-30 | 1990-06-01 | Amazonen Werke Dreyer H | Pompe peristaltique a rotor muni de galets cooperant avec un tuyau de pompe s'appuyant sur un chemin courbe de guidage |
| WO1991003602A1 (fr) * | 1989-08-31 | 1991-03-21 | Fleet (Line Markers) Limited | Appareil de distribution de liquide |
| FR2682999A1 (fr) * | 1991-10-23 | 1993-04-30 | Leboeuf Guy | Pompe peristaltique. |
| GB2285837A (en) * | 1994-01-24 | 1995-07-26 | Varian Australia | Peristaltic pump |
| GB2290582A (en) * | 1994-06-20 | 1996-01-03 | Riverlynx Ltd | Peristaltic pumps |
| EP1847712A1 (fr) * | 2006-04-21 | 2007-10-24 | Bredel Hose Pumps B.V. | Pompe péristaltique |
| DE102013020560B3 (de) * | 2013-12-09 | 2015-04-16 | Thomas Magnete Gmbh | Dosierpumpe zur Förderung pastöser Medien mit hohen Anforderungen an die Hygiene und die Betriebssicherheit |
| EP2886866A1 (fr) * | 2013-12-09 | 2015-06-24 | Thomas Magnete GmbH | Pompe de dosage destinée au transport de milieux pâteux ayant des exigences élevées relatives à l'hygiène et la sécurité de fonctionnement |
| CN116163935A (zh) * | 2023-04-20 | 2023-05-26 | 保定融柏恒流泵制造有限公司 | 一种基于输送管道间断转动的蠕动泵 |
| US11692540B2 (en) | 2017-11-08 | 2023-07-04 | Oina Vv Ab | Peristaltic pump |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3114127C2 (de) * | 1981-04-08 | 1984-06-07 | Fresenius AG, 6380 Bad Homburg | Rollpumpe für medizinische Zwecke |
| NL9101153A (nl) * | 1991-07-02 | 1993-02-01 | Leijstra B V | Inrichting voor het bereiden en afgeven van consumptieijs, in het bijzonder softijs. |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2629333A (en) * | 1950-07-01 | 1953-02-24 | Roger G Olden | Rotary compress pump |
| GB783884A (en) * | 1954-06-12 | 1957-10-02 | Robert Edward David Clark | Improvements in rotary pumps |
| DE2244365A1 (de) * | 1972-09-09 | 1974-03-14 | Wilhelm Schmidts | Schlauchpumpe |
| DE2444686A1 (de) * | 1973-09-24 | 1975-03-27 | Werner Dipl Ing Juette | Peristaltikpumpe und verfahren zu ihrem betrieb |
-
1978
- 1978-12-22 DE DE19782855634 patent/DE2855634A1/de active Pending
-
1979
- 1979-12-20 EP EP79105284A patent/EP0013002A1/fr not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2629333A (en) * | 1950-07-01 | 1953-02-24 | Roger G Olden | Rotary compress pump |
| GB783884A (en) * | 1954-06-12 | 1957-10-02 | Robert Edward David Clark | Improvements in rotary pumps |
| DE2244365A1 (de) * | 1972-09-09 | 1974-03-14 | Wilhelm Schmidts | Schlauchpumpe |
| DE2444686A1 (de) * | 1973-09-24 | 1975-03-27 | Werner Dipl Ing Juette | Peristaltikpumpe und verfahren zu ihrem betrieb |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2514080A1 (fr) * | 1981-10-06 | 1983-04-08 | Elmar Medical Systems Ltd | Pompe peristaltique a stator mobile |
| GB2128262A (en) * | 1982-09-15 | 1984-04-26 | Thomas John Mcneel Robertson | Peristaltic pump or motor |
| AU592760B2 (en) * | 1984-08-07 | 1990-01-25 | Abbott Laboratories | Pressure surface for a peristaltic pump |
| FR2639686A1 (fr) * | 1988-11-30 | 1990-06-01 | Amazonen Werke Dreyer H | Pompe peristaltique a rotor muni de galets cooperant avec un tuyau de pompe s'appuyant sur un chemin courbe de guidage |
| WO1991003602A1 (fr) * | 1989-08-31 | 1991-03-21 | Fleet (Line Markers) Limited | Appareil de distribution de liquide |
| FR2682999A1 (fr) * | 1991-10-23 | 1993-04-30 | Leboeuf Guy | Pompe peristaltique. |
| GB2285837B (en) * | 1994-01-24 | 1998-05-13 | Varian Australia | Peristaltic pump |
| GB2285837A (en) * | 1994-01-24 | 1995-07-26 | Varian Australia | Peristaltic pump |
| GB2290582A (en) * | 1994-06-20 | 1996-01-03 | Riverlynx Ltd | Peristaltic pumps |
| EP1847712A1 (fr) * | 2006-04-21 | 2007-10-24 | Bredel Hose Pumps B.V. | Pompe péristaltique |
| US8157547B2 (en) | 2006-04-21 | 2012-04-17 | Bredel Hose Pumps B.V. | Peristaltic pump with flow control |
| DE102013020560B3 (de) * | 2013-12-09 | 2015-04-16 | Thomas Magnete Gmbh | Dosierpumpe zur Förderung pastöser Medien mit hohen Anforderungen an die Hygiene und die Betriebssicherheit |
| EP2886866A1 (fr) * | 2013-12-09 | 2015-06-24 | Thomas Magnete GmbH | Pompe de dosage destinée au transport de milieux pâteux ayant des exigences élevées relatives à l'hygiène et la sécurité de fonctionnement |
| EP2886859A3 (fr) * | 2013-12-09 | 2016-03-09 | THOMAS MAGNETE GmbH | Pompe de dosage destinée à acheminer des milieux pâteux ayant des exigences élevées relatives à l'hygiène et la sécurité de fonctionnement |
| US11692540B2 (en) | 2017-11-08 | 2023-07-04 | Oina Vv Ab | Peristaltic pump |
| US12320348B2 (en) | 2017-11-08 | 2025-06-03 | Oina Vv Ab | Peristaltic pump |
| CN116163935A (zh) * | 2023-04-20 | 2023-05-26 | 保定融柏恒流泵制造有限公司 | 一种基于输送管道间断转动的蠕动泵 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2855634A1 (de) | 1980-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn | ||
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SEGATZ, WILHELM |