EP0786596B1 - Peristaltic pump - Google Patents
Peristaltic pump Download PDFInfo
- Publication number
- EP0786596B1 EP0786596B1 EP19970460007 EP97460007A EP0786596B1 EP 0786596 B1 EP0786596 B1 EP 0786596B1 EP 19970460007 EP19970460007 EP 19970460007 EP 97460007 A EP97460007 A EP 97460007A EP 0786596 B1 EP0786596 B1 EP 0786596B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cam
- rotor
- peristaltic pump
- lever
- pipes
- 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.)
- Expired - Lifetime
Links
- 230000002572 peristaltic effect Effects 0.000 title claims description 19
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral 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
- 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
- F04B43/1292—Pumps specially adapted for several tubular flexible members
-
- 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 present invention relates to the field of peristaltic pumps in general.
- These pumps are based on the principle of crushing a flexible pipe by means of successive rollers or rollers arranged at the periphery of a rotor, or by means of the rotor itself acting by its peripheral surface which then forms a succession of cams.
- They include a number qualities that make them particularly suitable for applications in dosing systems or analytical, fine chemistry, pharmacy, biology, etc. Among these qualities, the following are particularly remarkable: flexibility of use, reliability, the need for almost zero maintenance, ease of cleaning, flow accuracy over a wide range.
- Peristaltic pumps have a serious drawback in that when the hose is stopped remains overwritten. Under these conditions, the flexible hose will more or less quickly keep a deformation which will distort the flow.
- a known solution consists, as illustrated in document US-A-4 604 038, to release the hose flexible outside operating periods, by manual spacing of a cam with which cooperate the rollers to crush the pipe. Each time pump running, it must be reset beforehand manually the cam.
- the invention was achieved with the triple aim of make the release function possible remotely and putting the hose back into working condition flexible of a peristaltic pump, automate this function in such a way that it is systematically implementation for each stop and restart of the pump, and to design a simple device and reliable.
- the invention therefore consists of a pump peristaltic comprising at least one flexible hose engaged around a rotor whose periphery ensures crushing said pipe against a cam corresponding, characterized in that said cam has a pivoting ability allowing its surface active is moved away from the periphery of said rotor to ensuring the relaxation of said flexible pipe, and in that positioning of said cam in a state of functioning and its release are ensured by a control mechanism comprising a clutch with which friction clutch is mounted on a pinion driven at the same time as said rotor, such so that if the rotor turns in the direction of pump operation, the cam is brought in operating position and maintained in this position by a force resulting at least mainly of the resistant torque of the clutch, and that if the rotor turns in the other direction, the cam is released by said mechanism, so that the flexible hose is released.
- said cam is pivotally driven towards the operating position by a lever itself mounted pivoting between two positions defined by stops.
- the support between said lever and the cam is done through an additional element adjustable, which in particular allows adaptation to the same location in the same pipe material different diameters. In a simple form, it is of a finger mounted with adjustment capacity in said the sink.
- a single lever can control a plurality of cams each associated with a flexible tube.
- the pump has two groups of hoses flexible mounted on the same rotor, both groups operating in opposite directions, a arrangement according to the invention for each group, of so that when the pipes of one are released, the pipes of the other are in the constrained state and vice versa.
- Figs. 1 and 2 illustrate the general principle of the invention. They represent a peristaltic pump 1, the main elements of which are mounted on a planar support 2. It is first of all a rotor 3 of general cylindrical shape, the periphery of which a regular succession of identical rollers 30 axially oriented and mounted to rotate freely on themselves. The rotor 3 is integral in rotation with a shaft 4 driven by a motor, not shown.
- a flexible pipe 5 partially surrounds the rotor 3, in contact with the rollers 30. Beyond its part 50 surrounding the rotor 3, its inlet and outlet strands refoulement, respectively 51 and 52, are engaged in retaining blocks 6 fixed on the support 2.
- the part 50 of the pipe 5 in contact with the rotor 3 is externally bordered by the cylindrical surface 70 a cam 7 facing the rollers 30.
- the cam 7 is articulated around an axis 8 mounted perpendicularly on the support 2. Being brought closer to the rollers 30, it constrains them the pipe 5 along the length of its part 50, such so that at the right of each roller 30, the pipe 5 is crushed on itself. Pipe 5 is released by pivoting of the cam 7 opposite the rotor 3.
- the cam 7 is driven in pivoting by means of a mechanism comprising a friction clutch mounted on a pinion driven in rotation by the shaft 4.
- the pinion designated by the reference 9 is mounted on the axis 8 of articulation of the cam 7. It is meshed with a pinion 10 integral in rotation with the shaft 4.
- the pinion 9 is coupled via a friction clutch 11 with a crank washer 12.
- the clutch at friction 11 advantageously consists of one or several wavy washers interposed on axis 8 between the pinion 9 and the crank washer 12, the friction adjustment can be effected by means of of a nut-lock nut assembly 13.
- the washer-crank 12 is preferably a cap washer.
- the crank washer 12 is connected by through a link 14 to a lever 15 acting on the cam 7. More precisely, the lever 15 is placed behind the cam 7 relative to the rotor 3, to cooperate with the back 71 thereof. Leverage 15 is articulated around an axis 16 near the end of the cam 7 distant from its hinge axis 8. From preferably, the support between the lever 15 and the cam 7 is made by means of a finger 17 adjustable in length, integral with lever 15. This is in practice a screw passing through the lever 15.
- the lever 15 has a pivoting ability around axis 16, limited in both directions by a system abutment 18, which here consists of an integral finger lever 15 engaged in a cavity of support 2, in such a way that it can only move between the opposite edges of it.
- the link through the connecting rod 14 between the lever 15 and the crank washer 12 is such that at the end of the lever 15 in either of its extreme positions of pivoting by the crank washer 12, there is blockage in rotation thereof as long as the direction of rotation of the pinion 9 remains unchanged.
- the lever 15 is brought into the pivoting position limited to the opposite of rotor 3 by rotation of the crank washer 12 counterclockwise.
- the joint 120 between the link 14 and the crank washer 12 is slightly below the three o'clock position on the latter while the crank arm and the connecting rod 14 make an angle less than 180 ° open towards the top. Therefore, joint 120 cannot go further to the three o'clock position, so that the crank washer 12 locks in rotation, the clutch 11 then sliding while the pinion 9 continues to rotate counterclockwise.
- articulation 120 is in the vicinity of the time position of six o'clock on the crank washer 12. It cannot move past it clockwise so that when this position is reached, the crank washer 12 locks in rotation, clutch 11 therefore sliding as long as the pinion 9 continues to turn in the same direction, i.e. the direction schedule.
- the joint 120 moves immediately from one to the other of its positions limits.
- the pump according to the invention is in the state shown in FIG. 1.
- the lever 15 is in its extreme pivoting position opposite the rotor 3, so that the released cam 7 is moved away from the rollers 30.
- the pipe 5 is not constrained and so it has a normal section on its entire length.
- Fig. 3 shows a pump according to the invention operating in exactly the same way as that has been described previously. It differs from this in what it is multi-channel, namely that instead of a single pipe 5, it includes several which are mounted in parallel around the rotor 3. On each pipe 5, corresponds to a particular cam 7a to 7g, the cams 7a to 7g being identical and articulated on the same axis 8. All the cams 7a to 7g are operated by a single lever 15, however provided with a finger setting 17 for each cam. So we can settle individually each cam, or even neutralize a or several channels by total retraction in the lever 15 of the corresponding finger (s) 17. It will be noted that a simpler version may have only one cam for all pipes.
- the pump shown in Fig. 4 works so bidirectional. Like that of FIG. 3, she is multi-channel and with each pipe 5 is associated a cam particular 7h to 7m. Pipes 5 and cams 7h to 7m form two groups adjacent to each of which are assigned on its free side a lever 15a, 15b and its training system which are as above described. Both drive systems work in opposition, so that for a direction of rotation of the rotor 3, one group of pipes is constrained and the other released, and that for the opposite direction of rotation, the situation is reversed. Of course, we can have here again a means of adjustment specific to each cam, as in a simplified version, there may have only one cam per pipe group 5, as there can also be only one hose 5 per group.
- the pump stop command may be programmed in such a way that the two groups pipes are released at a standstill in turn.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Description
La présente invention concerne le domaine des pompes péristaltiques en général.The present invention relates to the field of peristaltic pumps in general.
Le fonctionnement de ces pompes repose sur le principe de l'écrasement d'un tuyau souple au moyen de rouleaux ou galets successifs agencés à la périphérie d'un rotor, ou bien au moyen du rotor lui-même agissant par sa surface périphérique qui forme alors une succession de cames. Elles regroupent un certain nombre de qualités qui les rendent particulièrement adaptées pour des applications dans des systèmes de dosage ou d'analyse, en chimie fine, pharmacie, biologie, etc. Parmi ces qualités, sont notamment remarquables la souplesse d'utilisation, la fiabilité, le besoin de maintenance quasiment nul, la facilité de nettoyage, la précision du débit sur une plage étendue.The operation of these pumps is based on the principle of crushing a flexible pipe by means of successive rollers or rollers arranged at the periphery of a rotor, or by means of the rotor itself acting by its peripheral surface which then forms a succession of cams. They include a number qualities that make them particularly suitable for applications in dosing systems or analytical, fine chemistry, pharmacy, biology, etc. Among these qualities, the following are particularly remarkable: flexibility of use, reliability, the need for almost zero maintenance, ease of cleaning, flow accuracy over a wide range.
Les pompes péristaltiques présentent toutefois un grave inconvénient en ce qu'à l'arrêt, le tuyau souple demeure écrasé. Dans ces conditions, le tuyau souple va plus ou moins rapidement conserver une déformation permanente qui faussera le débit.Peristaltic pumps, however, have a serious drawback in that when the hose is stopped remains overwritten. Under these conditions, the flexible hose will more or less quickly keep a deformation which will distort the flow.
Une solution connue consiste, comme illustré dans le document US-A-4 604 038, à relâcher le tuyau souple en dehors des périodes de fonctionnement, par écartement manuel d'une came avec laquelle coopérent les galets pour écraser le tuyau. A chaque remise en marche de la pompe, il faut au préalable réenclencher manuellement la came.A known solution consists, as illustrated in document US-A-4 604 038, to release the hose flexible outside operating periods, by manual spacing of a cam with which cooperate the rollers to crush the pipe. Each time pump running, it must be reset beforehand manually the cam.
Cette solution ne vaut donc que pour les pompes très facilement accessibles. Dans tous les autres cas, c'est-à-dire si la pompe est intégrée à l'intérieur d'un ensemble, ou bien si elle se trouve dans un site isolé, soit par exemple dans une installation sous-marine, l'inconvénient demeure et conduit à utiliser d'autres types de pompes, même si globalement, elles répondent moins bien aux exigences de l'application.This solution therefore only applies to pumps very easily accessible. In all other cases, i.e. if the pump is integrated inside of a set, or if it is in a site isolated, for example in an underwater installation, the disadvantage remains and leads to use other types of pumps, even if overall meet the application requirements less well.
L'invention a été réalisée dans le triple but de rendre possible à distance la fonction de relâchement et de remise en situation de fonctionnement du tuyau souple d'une pompe péristaltique, d'automatiser cette fonction de telle manière qu'elle soit systématiquement mise en oeuvre pour chaque arrêt et remise en route de la pompe, et de concevoir un dispositif simple et fiable.The invention was achieved with the triple aim of make the release function possible remotely and putting the hose back into working condition flexible of a peristaltic pump, automate this function in such a way that it is systematically implementation for each stop and restart of the pump, and to design a simple device and reliable.
Un autre but recherché a été de prévoir que ce dispositif soit aisément adaptable sur des modèles de pompe existants.Another goal sought was to provide that this device is easily adaptable to models of existing pump.
L'invention consiste donc en une pompe péristaltique comportant au moins un tuyau souple engagé autour d'un rotor dont la périphérie assure l'écrasement dudit tuyau contre une came correspondante, caractérisée en ce que ladite came a une aptitude en pivotement permettant que sa surface active soit écartée de la périphérie dudit rotor pour assurer le relâchement dudit tuyau souple, et en ce que le positionnement de ladite came en état de fonctionnement et sa libération sont assurés par un mécanisme de commande comportant un embrayage à friction, lequel embrayage à friction est monté sur un pignon entraíné en même temps que ledit rotor, de telle sorte que si le rotor tourne dans le sens de fonctionnement de la pompe, la came est amenée en position de fonctionnement et maintenue dans cette position par une force résultant au moins principalement du couple résistant de l'embrayage, et que si le rotor tourne dans l'autre sens, la came est libérée par ledit mécanisme, de telle manière que le tuyau souple est relâché.The invention therefore consists of a pump peristaltic comprising at least one flexible hose engaged around a rotor whose periphery ensures crushing said pipe against a cam corresponding, characterized in that said cam has a pivoting ability allowing its surface active is moved away from the periphery of said rotor to ensuring the relaxation of said flexible pipe, and in that positioning of said cam in a state of functioning and its release are ensured by a control mechanism comprising a clutch with which friction clutch is mounted on a pinion driven at the same time as said rotor, such so that if the rotor turns in the direction of pump operation, the cam is brought in operating position and maintained in this position by a force resulting at least mainly of the resistant torque of the clutch, and that if the rotor turns in the other direction, the cam is released by said mechanism, so that the flexible hose is released.
Il suffit donc de prévoir, au niveau de la commande de la pompe, que l'arrêt de celle-ci soit suivi d'un bref redémarrage du moteur dans le sens inverse du sens de fonctionnement pour que le tuyau souple soit relâché, tandis que dès la remise en marche de la pompe, le tuyau redevient fonctionnellement contraint entre la périphérie du rotor et la came.It is therefore sufficient to provide, at the level of the pump control, whether the pump has stopped followed by a brief restart of the engine in the direction reverse of the operating direction so that the hose flexible is released, while on restarting of the pump, the hose becomes functional again constrained between the periphery of the rotor and the cam.
Dans une forme de réalisation de l'invention, ladite came est entraínée en pivotement vers la position de fonctionnement par un levier lui-même monté pivotant entre deux positions définies par des butées. De préférence, l'appui entre ledit levier et la came se fait par l'intermédiaire d'un élément supplémentaire réglable, qui permet notamment l'adaptation à un même emplacement dans un même matériel de tuyaux de différents diamètres. Dans une forme simple, il s'agit d'un doigt monté avec capacité de réglage dans ledit levier.In one embodiment of the invention, said cam is pivotally driven towards the operating position by a lever itself mounted pivoting between two positions defined by stops. Preferably, the support between said lever and the cam is done through an additional element adjustable, which in particular allows adaptation to the same location in the same pipe material different diameters. In a simple form, it is of a finger mounted with adjustment capacity in said the sink.
Dans le cas d'une pompe comportant une pluralité de tuyaux souples montés en parallèle sur un même rotor, un levier unique peut commander une pluralité de cames associées chacune à un tube souple.In the case of a pump comprising a plurality flexible pipes mounted in parallel on the same rotor, a single lever can control a plurality of cams each associated with a flexible tube.
Si la pompe comporte deux groupes de tuyaux souples montés sur un même rotor, les deux groupes fonctionnant en sens opposés, il peut être prévu un agencement selon l'invention pour chaque groupe, de telle manière que lorsque les tuyaux de l'un sont relâchés, les tuyaux de l'autre sont à l'état contraint de fonctionnement et vice versa. If the pump has two groups of hoses flexible mounted on the same rotor, both groups operating in opposite directions, a arrangement according to the invention for each group, of so that when the pipes of one are released, the pipes of the other are in the constrained state and vice versa.
Ces caractéristiques et avantages de l'invention,
ainsi que d'autres, apparaítront plus clairement à la
lecture de la description suivante, faite en relation
avec les dessins joints, dans lesquels :
Dans l'ensemble des dessins, les mêmes références désignent partout les mêmes éléments.Throughout the drawings, the same references everywhere denote the same elements.
Les Figs. 1 et 2 illustrent le principe général de
l'invention. Elles représentent une pompe péristaltique
1 dont les principaux éléments sont montés sur un
support plan 2. Il s'agit tout d'abord d'un rotor 3 de
forme générale cylindrique, dont la périphérie comporte
une succession régulière de rouleaux identiques 30
orientés axialement et montés libres en rotation sur
eux-mêmes. Le rotor 3 est solidaire en rotation d'un
arbre 4 entraíné par un moteur, non montré.Figs. 1 and 2 illustrate the general principle of
the invention. They represent a
Un tuyau souple 5 entoure partiellement le rotor
3, au contact des rouleaux 30. Au-delà de sa partie 50
entourant le rotor 3, ses brins d'admission et de
refoulement, respectivement 51 et 52, sont engagés dans
des blocs de retenue 6 fixés sur le support 2. A
La partie 50 du tuyau 5 au contact du rotor 3 est
bordée extérieurement par la surface cylindrique 70
d'une came 7 faisant face aux rouleaux 30. La came 7
est articulée autour d'un axe 8 monté
perpendiculairement sur le support 2. En étant
rappprochée des rouleaux 30, elle contraint avec ceux-ci
le tuyau 5 sur la longueur de sa partie 50, de telle
façon qu'au droit de chaque rouleau 30, le tuyau 5 est
écrasé sur lui-même. Le tuyau 5 est relâché par
pivotement de la came 7 à l'opposé du rotor 3.The
Selon l'invention, la came 7 est entraínée en
pivotement au moyen d'un mécanisme comportant un
embrayage à friction monté sur un pignon entraíné en
rotation par l'arbre 4. Dans l'exemple de réalisation
montré, le pignon désigné par le repère 9 est monté sur
l'axe 8 d'articulation de la came 7. Il est engrené
avec un pignon 10 solidaire en rotation de l'arbre 4.According to the invention, the
Le pignon 9 est couplé par l'intermédiaire d'un
embayage à friction 11 avec une rondelle-manivelle 12.
Comme l'illustrent les Figs. 3 et 4, l'embrayage à
friction 11 consiste avantageusement en une ou
plusieurs rondelles ondulées interposées sur l'axe 8
entre le pignon 9 et la rondelle-manivelle 12, le
réglage de la friction pouvant être effectué au moyen
d'un ensemble écrou-contre-écrou 13. La rondelle-manivelle
12 est de préférence une rondelle-chape.The
La rondelle-manivelle 12 est reliée par
l'intermédiaire d'une biellette 14 à un levier 15
agissant sur la came 7. Plus précisément, le levier 15
est placé derrière la came 7 par rapport au rotor 3,
pour coopérer avec le dos 71 de celle-ci. Le levier 15
est articulé autour d'un axe 16 voisin de l'extrémité
de la came 7 distante de son axe d'articulation 8. De
préférence, l'appui entre le levier 15 et la came 7 se
fait par l'intermédiaire d'un doigt 17 réglable en
longueur, solidaire du levier 15. Il s'agit en pratique
d'une vis traversant le levier 15.The
Le levier 15 a une aptitude de pivotement autour
de l'axe 16, limitée dans les deux sens par un système
de butée 18, lequel consiste ici en un doigt solidaire
du levier 15 engagé dans une cavité du support 2, de
telle manière qu'il ne puisse se déplacer qu'entre les
bords opposés de celle-ci.The
D'autre part, la liaison par l'intermédiaire de la
biellette 14 entre le levier 15 et la rondelle-manivelle
12 est telle qu'en fin d'amenée du levier 15
dans l'une ou l'autre de ses positions extrêmes de
pivotement par la rondelle-manivelle 12, il y a blocage
en rotation de celle-ci tant que le sens de rotation du
pignon 9 reste inchangé. On voit à la Fig. 1 que le
levier 15 est amené en position de pivotement limite à
l'opposé du rotor 3 par rotation de la rondelle-manivelle
12 dans le sens antihoraire. Pour cette
position limite, l'articulation 120 entre la biellette
14 et la rondelle-manivelle 12 est légèrement en
dessous de la position horaire de trois heures sur
cette dernière tandis que le bras de manivelle et la
biellette 14 font un angle inférieur à 180° ouvert vers
le haut. Par conséquent, l'articulation 120 ne peut
aller plus loin vers la position de trois heures, de
sorte que la rondelle-manivelle 12 se bloque en
rotation, l'embrayage 11 glissant alors tant que le
pignon 9 continue à tourner dans le sens antihoraire.On the other hand, the link through the
connecting
A la Fig. 2, pour la position de pivotement
extrême du levier 15 vers le rotor 3, l'articulation
120 se trouve au voisinage de la position horaire de
six heures sur la rondelle-manivelle 12. Elle ne peut
se déplacer au-delà dans le sens horaire, de sorte que
lorsque cette position est atteinte, la rondelle-manivelle
12 se bloque en rotation, l'embrayage 11
glissant dès lors tant que le pignon 9 continue à
tourner dans le même sens, c'est-à-dire le sens
horaire. Par contre, pour toute inversion du sens de
rotation du pignon 9, l'articulation 120 se déplace
immédiatement de l'une à l'autre de ses positions
limites.In Fig. 2, for the pivoting position
end of
Au repos, la pompe selon l'invention est dans
l'état représenté à la Fig. 1. Le levier 15 est dans sa
position extrême de pivotement à l'opposé du rotor 3,
de sorte que la came 7 libérée est écartée des rouleaux
30. Entre ceux-ci et la came 7, le tuyau 5 n'est pas
contraint et il présente donc une section normale sur
toute sa longueur.At rest, the pump according to the invention is in
the state shown in FIG. 1. The
Lors du démarrage de la pompe, par mise en
rotation dans le sens antihoraire de l'arbre 4, Fig. 2,
le pignon 9 est entraíné dans le sens horaire, et avec
lui la rondelle-manivelle 12 qui amène par
l'intermédiaire de la biellette 14 le levier 15 dans sa
position extrême de pivotement vers le rotor 3. Le
levier 15, par son doigt 17, rapproche la came 7 du
rotor 3. Entre la surface active 70 de la came 7 et les
rouleaux 30 lui faisant face, le tuyau 5 se trouve
écrasé, de sorte que la pompe fonctionne. La force
d'application de la came 7 sur le tuyau 5 résulte du
couple résistant de l'embrayage agissant sur le levier
15. Si nécessaire, il peut être prévu en outre un
ressort de rappel 19 monté entre le levier 15 et le
support 2. When starting the pump, by setting
counterclockwise rotation of the
La commande d'arrêt de la pompe provoque l'arrêt
du moteur, suivi d'un bref redémarrage en sens inverse.
Par conséquent, le pignon 9 tournant dans le sens
horaire va s'arrêter pour repartir l'espace d'un
instant dans le sens antihoraire, Fig. 1. Ce faisant,
il entraíne la rondelle-manivelle 12, qui entraíne à
son tour par l'intermédiaire de la biellette 14 le
levier 15 dans sa position extrême de pivotement à
l'opposé du rotor 3. La came 7 ainsi libérée s'écarte
du rotor 3 sous l'effet de la réaction du tuyau 5
reprenant sa forme au droit des rouleaux 30.Pump stop command causes stop
engine, followed by a brief restart in reverse.
Consequently, the
La Fig. 3 représente une pompe selon l'invention
fonctionnant exactement de la même façon que celle qui
a été décrite précédemment. Elle diffère de celle-ci en
ce qu'elle est multi-canaux, à savoir qu'au lieu d'un
tuyau unique 5, elle en comprend plusieurs qui sont
montés en parallèle autour du rotor 3. A chaque tuyau
5, correspond une came particulière 7a à 7g, les cames
7a à 7g étant identiques et articulées sur le même axe
8. L'ensemble des cames 7a à 7g sont manoeuvrées par un
levier unique 15, pourvu toutefois d'un doigt de
réglage 17 pour chaque came. On peut donc régler
individuellement chaque came, voire même neutraliser un
ou plusieurs canaux par escamotage total dans le levier
15 du ou des doigts correspondants 17. On notera qu'une
version plus simple pourra ne comporter qu'une seule
came pour l'ensemble des tuyaux.Fig. 3 shows a pump according to the invention
operating in exactly the same way as that
has been described previously. It differs from this in
what it is multi-channel, namely that instead of a
La pompe illustrée à la Fig. 4 fonctionne de façon
bidirectionnelle. Comme celle de la Fig. 3, elle est
multi-canaux et à chaque tuyau 5 est associée une came
particulière 7h à 7m. Les tuyaux 5 et les cames 7h à 7m
forment deux groupes adjacents à chacun desquels sont
affectés sur son côté libre un levier 15a, 15b et son
système d'entraínement qui sont tels que précédemment
décrit. Les deux systèmes d'entraínement fonctionnent
en opposition, si bien que pour un sens de rotation du
rotor 3, un groupe de tuyaux est contraint et l'autre
relâché, et que pour le sens de rotation opposé, la
situation est inversée. Bien entendu, on peut disposer
là encore d'un moyen de réglage propre à chaque came,
de même que dans une version simplifiée, il peut n'y
avoir qu'une seule came par groupe de tuyaux 5, comme
il peut n'y avoir également qu'un seul tuyau 5 par
groupe.The pump shown in Fig. 4 works so
bidirectional. Like that of FIG. 3, she is
multi-channel and with each
Lorsque la pompe bidirectionnelle de la Fig. 4 n'est pas en service, un groupe de tuyaux demeure cependant contraint. Pour pallier au mieux cet inconvénient, la commande d'arrêt de la pompe pourra être programmée de telle manière que les deux groupes de tuyaux soient relâchés à l'arrêt chacun leur tour.When the bidirectional pump of FIG. 4 is not in service, a group of pipes remains however constrained. To best overcome this drawback, the pump stop command may be programmed in such a way that the two groups pipes are released at a standstill in turn.
Claims (10)
- A peristaltic pump having at least one flexible pipe (5) engaged around a rotor (3), the periphery (30) of which crushes said pipe (5) against a corresponding cam (7), said cam (7) being able to pivot so that its active surface (70) is moved back from the periphery (30) of the rotor (3) so that said flexible pipe (5) is released, characterised in that the positioning of said cam (7) in the operating state and its release are effected by a control mechanism (9-15) consisting of a friction clutch (11), said friction clutch (11) being mounted on a pinion (9) driven simultaneously with said rotor (3) so that if the rotor is rotating in the operating direction of the pump the cam is moved into its operating position and retained in this position by a force resulting at least mainly from the resisting torque of the clutch (11) and if the rotor is rotating in the other direction the cam is released by said mechanism so that the flexible pipe (5) is released.
- A peristaltic pump as claimed in claim 1, characterised in that said control mechanism has a lever (15) mounted behind said cam (7) so as to act on a level with the back (71) thereof, said lever (15) is pivotally mounted about a shaft (16) disposed close to the end of the cam (7) remote from the pivot shaft (8) thereof and being capable of pivoting between two positions defined by a system of stops (18) and is linked by means of a crank link (14) to a washer-crank (12) centred on the shaft (8) and coupled with said pinion (9) by said friction clutch (11).
- A peristaltic pump as claimed in claim 2, characterised in that support is provided between the lever (15) and the back (71) of the cam (7) by means of a supplementary adjustable element (17) which in particular allows pipes (5) of different diameters to be adapted to fit the same location.
- A peristaltic pump as claimed in claim 2 or 3, characterised in that a spring (19) is provided which assists in producing the force applying the lever (15) onto the cam (7) when the latter is in the operating position.
- A peristaltic pump as claimed in one of claims 1 to 4, characterised in that it has a plurality of pipes (5) mounted in parallel around the rotor (3), at least one cam (7) and a single control mechanism (9-15).
- A peristaltic pump as claimed in claim 5, characterised in that it has as many cams (7a-7g) as there are pipes (5) each co-operating with a pipe (5).
- A peristaltic pump as claimed in one of claims 1 to 4, characterised in that it has two groups of pipes (5) mounted in parallel around the rotor (3), each group having at least one pipe (5) and at least one cam (7) and one control-mechanism (9-15) co-operate with each group, the two control mechanisms (9-15) operating inversely so that when one pipe group (5) is engaged the other group is released.
- A peristaltic pump as claimed in claim 7, characterised in that it has as many cams (7h-7m) as there are pipes (5).
- A peristaltic pump as claimed in claim 7 or 8, characterised in that its stop control is programmed so that during periods of stoppage the two groups of pipes (5) are released each in turn.
- A peristaltic pump as claimed in one of claims 5 to 9, these in turn being dependent on claim 3, characterised in that each lever (15; 15a, 15b) has a specific regulating finger for each of the cams with which it co-operates.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9601195 | 1996-01-26 | ||
| FR9601195A FR2744176B1 (en) | 1996-01-26 | 1996-01-26 | PERISTALTIC PUMP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0786596A1 EP0786596A1 (en) | 1997-07-30 |
| EP0786596B1 true EP0786596B1 (en) | 1998-12-23 |
Family
ID=9488711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19970460007 Expired - Lifetime EP0786596B1 (en) | 1996-01-26 | 1997-01-23 | Peristaltic pump |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0786596B1 (en) |
| DE (1) | DE69700070T2 (en) |
| DK (1) | DK0786596T3 (en) |
| FR (1) | FR2744176B1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20217483U1 (en) * | 2002-11-13 | 2003-10-09 | Lang Apparatebau Gmbh, 83313 Siegsdorf | peristaltic |
| US7300264B2 (en) | 2003-09-08 | 2007-11-27 | Hewlett-Packard Development, L.P. | Peristaltic pump |
| EP1705375B1 (en) | 2005-03-10 | 2007-11-07 | LIFEBRIDGE Medizintechnik AG | Peristaltic pump |
| WO2009073212A1 (en) | 2007-12-05 | 2009-06-11 | Bunn-O-Matic Corporation | Peristaltic pump |
| CA2891808C (en) | 2012-12-21 | 2020-12-01 | Alcon Research Ltd. | Cassette clamp mechanism |
| CN104895779B (en) * | 2015-06-09 | 2017-11-07 | 常州普瑞流体技术有限公司 | A kind of stainless steel Peristaltic pump head |
| DE202016000790U1 (en) | 2016-02-08 | 2016-03-18 | Ralf Hannibal | Peristaltic pump with a rotary actuator and a diverter valve |
| CN110925176B (en) * | 2019-12-26 | 2024-04-26 | 湖南执先科技有限公司 | Double-roller rotary high-precision peristaltic pump |
| CN111156156B (en) * | 2020-01-20 | 2024-12-24 | 保定申辰泵业有限公司 | Rotary drive structure and peristaltic pump head with upper pressure block opening and closing drive structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3832096A (en) * | 1971-03-03 | 1974-08-27 | Buchler Instr | Multitube peristaltic pump with individual programming control |
| GB2107797B (en) * | 1981-10-20 | 1985-02-06 | Rudolph Berelson | Peristaltic pump |
| US4604038A (en) * | 1985-03-08 | 1986-08-05 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Remotely operable peristaltic pump |
| DE3827722C1 (en) * | 1988-08-16 | 1989-12-07 | Fresenius Ag, 6380 Bad Homburg, De | |
| JP3392493B2 (en) * | 1994-02-01 | 2003-03-31 | 文人 小松 | Tube pump |
-
1996
- 1996-01-26 FR FR9601195A patent/FR2744176B1/en not_active Expired - Fee Related
-
1997
- 1997-01-23 DE DE1997600070 patent/DE69700070T2/en not_active Expired - Fee Related
- 1997-01-23 EP EP19970460007 patent/EP0786596B1/en not_active Expired - Lifetime
- 1997-01-23 DK DK97460007T patent/DK0786596T3/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2744176A1 (en) | 1997-08-01 |
| FR2744176B1 (en) | 1998-04-10 |
| DE69700070T2 (en) | 1999-05-20 |
| EP0786596A1 (en) | 1997-07-30 |
| DK0786596T3 (en) | 1999-08-23 |
| DE69700070D1 (en) | 1999-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2021647B1 (en) | Under travel actuator, particularly for an automobile clutch | |
| EP0786596B1 (en) | Peristaltic pump | |
| EP0657343B1 (en) | Track tensioning mechanism | |
| CA1153667A (en) | Short coupling with two shutoffs in series | |
| EP1996826B1 (en) | Sprung anti-backing-off device | |
| FR2934006A1 (en) | Rolling tube driving device for apron of roller-blind, has control unit controlling stopping of motor in response to relative rotation between output shaft of electric motor and rolling tube during descending of apron | |
| EP1087096A1 (en) | Actuator of a decoupling device for a geared motor drive of a closure device or a solar protection installation | |
| EP2986877B1 (en) | Valve, in particular an engine control valve, equipped with a metering gate and a diverter gate | |
| FR2508124A1 (en) | CONTROL FORK FOR CLUTCH STOP AND METHOD OF ASSEMBLING THE SAME | |
| EP2488325A1 (en) | Tool for placing a joint in a leaf rebate of a vehicle | |
| EP0775798B1 (en) | Rotational drive device for the take-up element of a roller shutter | |
| EP0723065B1 (en) | Roller blind equipped with box lead-through | |
| FR2741662A1 (en) | SAFETY DEVICE FOR SHUTTER | |
| EP0670436B1 (en) | Belt tensioner for an automotive I.C. engine | |
| FR2733024A1 (en) | Sliding shutter for fluid duct | |
| EP0071501A1 (en) | Limited rotation clutch for connecting to a drive shaft an auxiliary control means with two positions determined by the shaft rotation | |
| CH622875A5 (en) | ||
| FR3078763A1 (en) | DRIVING PROCESSING SYSTEM AND USE THEREOF | |
| EP1930537A1 (en) | Device for fixing a roller blind motor on a side panel equipped with a swivel pin and roller blind assembly equipped with such a device | |
| FR2688258A1 (en) | Device for closing a door by means of a braking member | |
| FR2783294A1 (en) | Simple synchronizer for gearbox of motor vehicle | |
| EP4407218A1 (en) | Valve assembly with common motorized actuator | |
| EP1500778A1 (en) | Shutter or sun protection Installation comprising a security device | |
| FR2528377A2 (en) | Transmission for pedal cycle - has eccentric pedal axis to allow variation in length of crank arm | |
| EP1394651A1 (en) | Indexing device with repeatable and precise operation |
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 |
Kind code of ref document: A1 Designated state(s): BE DE DK GB IT NL SE |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| 17P | Request for examination filed |
Effective date: 19971226 |
|
| 17Q | First examination report despatched |
Effective date: 19980225 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE DK GB IT NL SE |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19981223 |
|
| REF | Corresponds to: |
Ref document number: 69700070 Country of ref document: DE Date of ref document: 19990204 |
|
| ITF | It: translation for a ep patent filed | ||
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20071227 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20071227 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20071227 Year of fee payment: 12 Ref country code: NL Payment date: 20071226 Year of fee payment: 12 Ref country code: IT Payment date: 20080122 Year of fee payment: 12 Ref country code: DE Payment date: 20080115 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20080124 Year of fee payment: 12 |
|
| EUG | Se: european patent has lapsed | ||
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090123 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20090801 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090801 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090801 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090123 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090131 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090731 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090123 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090124 |