EP0837242B1 - Pompe péristaltique à galets débrayables - Google Patents
Pompe péristaltique à galets débrayables Download PDFInfo
- Publication number
- EP0837242B1 EP0837242B1 EP97402480A EP97402480A EP0837242B1 EP 0837242 B1 EP0837242 B1 EP 0837242B1 EP 97402480 A EP97402480 A EP 97402480A EP 97402480 A EP97402480 A EP 97402480A EP 0837242 B1 EP0837242 B1 EP 0837242B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compression
- peristaltic pump
- jacks
- stator
- duct
- 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
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
- F04B43/1276—Means for pushing the rollers against the tubular flexible member
-
- 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
- F04B43/1223—Machines, pumps, or pumping installations having flexible working members having peristaltic action the actuating elements, e.g. rollers, moving in a straight line during squeezing
Definitions
- the present invention relates to a peristaltic pump having a stator which supports a flexible conduit crushable rectilinear and compression means for generate a local crush moving along said flexible conduit to produce waves peristaltics advancing the contents of the flexible conduit.
- Such a pump is described in particular in the document FR-2 537 220.
- the compression means which arise in the form of a compression block are connected to the stator by means of rods which allow a displacement of the compression block relative to the stator.
- Four links allow movement of the compression block with respect to the stator between a compression position in which the flexible duct is flattened with a certain force and a clear position in which the duct is completely free.
- Move of the compression block is carried out using a handwheel central.
- this document provides for a pin which is engaged through an opening in the link and inserted in a housing provided in the stator.
- the primary object of the present invention is to overcome this disadvantage of the prior art by defining a pump peristaltic whose flexible duct is protected against all damage due to overpressure generated by the means of compression in the event of an obstacle in the drove.
- this type of pump sometimes has a disadvantage that the compression block does not provide not a centered flattening of the duct so that the flattened duct has a unilateral bead. In this In this case, the pumping efficiency is reduced.
- This decentralization of block comes from the fact that the block movement command acts centrally via the steering wheel, the four links only perform a linking function articulated and not pressure means.
- a second object of the present invention is to define a peristaltic pump whose flexible straight pipe is flattened in a perfectly centered manner.
- the present invention provides a pump peristaltic comprising a stator which supports a conduit flexible crushable rectilinear and compression means to generate a local crush moving along said flexible conduit, said compression means being provided displacement means for moving them with respect to said stator between a compression position in which the duct is flattened with a certain force and position clear in which the duct is not subjected to any compression on the part of said compression means, the displacement means comprise two actuation means mounted to act in a balanced way on the means of compression.
- the flexible conduit is perfectly flattened and protected during the possible passage of an obstacle or plug through the conduit as well as during a overpressure inside the product due to the presence an obstacle or a traffic jam.
- the actuation means comprise at minus a pair of cylinders.
- the jacks are pneumatic cylinders.
- the jacks are connected to the same compressed air source
- the compression means are in the form of a compression block mounted on the stator, the two cylinders being respectively mounted on either side of the compression block.
- the cylinder or cylinders are cylinders with double effect.
- the use of two pneumatic cylinders connected to a same source is particularly advantageous because, from a hand, it allows a perfect balance of the force of compression and, on the other hand, it's extremely easy to adjust the air pressure applied to the cylinders. So, in addition to the advantage that the compression means are perfectly balanced and easily disengageable, i.e. easily disengaged flexible duct so that, for example, cleaning or replacement operations it is now possible to precisely adjust the force with which the compression means act on the flexible duct crushable depending on the nature of the product to be transported.
- the pump shown in the drawings has two main parts, namely a compression block 1 and a stator 2 fitted with a flexible conduit 3. These two elements main which form the active parts of the pump are mounted in a rigid metal frame 40 which defines the maximum size of the pump.
- This framework is made up welded metal tubes forming uprights, sleepers and spacers.
- the stator 2 has two jaws 4 and 5 made up by straight pieces having a profile of rectangular parallelepiped which are clamped together by bolts 6. When these parts are tight against each other the other, they anchor the rib between them 3a which is made in one piece with the flexible conduit 3.
- This part can be made for example of rubber or in suitable elastomer. In its thickness, it can have a reinforcement ensuring its reinforcement and permanence of its repression qualities. We will not describe here the manufacture of the conduit itself. It exists different embodiments of this piece.
- parts 4 and 5 are raised so as to enclose the cylindrical part of the conduit 3 up to the height of its axis. These parts raised support a fixing part 7 which encloses the conduit 3 and retains a coupling sleeve in this conduit 8.
- the upper surface of the jaws 4 and 5 is bordered by flanges 5a and 4a which give the upper part of the stator the shape of a flat-bottomed bowl in the center of which the rib 3a is anchored.
- the jaws 4 and 5 are fixed on a base plate 9 which, at its ends, carries uprights 10, on which are articulated rods 11 ensuring the connection between the compression block 1 and the stator 2.
- There are four rods 11 whose upper ends are articulated at the two ends of a body 12 which constitutes the support part of the compression block.
- This body 12 is consisting of two longitudinal pads 13 and 14 arranged horizontally parallel to each other and rigidly connected by spacers 15.
- the pads 13 and 14 carry bearings at their ends ensuring the pivoting of two axes 16 carrying pulleys 17 on which are mounted two chains 18. To these chains are hung the ends of the trees of a number of moving parts 19.
- the pump shown in the drawings may include three mobile equipment, two of which are visible in Figure 1.
- each include support rollers 20 which roll on the pads 13 and 14 and compression rollers 21 which compress the duct 3 cyclically when the pump is in the working position, that is to say in the position shown in FIG. 2.
- a drive pulley (not shown) mounted at the end of one of the shafts 16 and driven from a motor by a belt, activates the compression block driving the chains 18 so that the pairs of rollers 21 pass successively and cyclically under the pads 13 and 14. These then compress by through the rollers 20, the rollers 21 against the conduit 3, which produces the backflow of the liquid into the direction of movement of the rollers.
- the rods 11 are articulated around axes 23 on the uprights 10.
- the body 12 of the compression block can therefore move parallel to itself by rotating the rods 11 between an open position in which the conduit 3 is completely released and a compression position in which the flexible conduit is crushed.
- So disassembly jaws 4 and 5 becomes a very easy operation since the bolts 6 are accessible and, on the other hand, the entire compression block can be moved aside completely of the conduit thanks to the rods 11.
- the displacement of the compression block presents yet another advantage than that of facilitating the disassembly of the stator and the replacement of conduits. They make it possible to if necessary carry out a complete cleaning of the duct using steam from disinfectants, or even shells scrapers, which is particularly important in the case pumps for food or cosmetic products.
- the pump is provided with two cylinders 30 which connect at least two of the four links 11 (those located symmetrically opposite) to the frame 40, or more precisely to a horizontal spacer 41, as can be seen in figure 1. It is therefore possible use two or four cylinders, preferably tires, connected to the same source of compressed air (not shown). An embodiment using two cylinders worked well. Using only one cylinder can also be considered if one arrives at overcome or alleviate the problems of symmetry and balancing which are totally resolved by use two or four cylinders.
- the cylinders are preferably double acting so that they can stress the compression block in position compression as well as in the released position.
- the cylinders are used on the one hand to actuate the rods to crush, respectively release, the flexible conduit, but allows on the other hand an easy adjustment of the force with which the compression block acts on the flexible duct. Indeed, it is easy to fine-tune the air pressure compressed which is supplied to the cylinders by the source (not shown). If, for example, this pressure is set to 3 bars, as soon as the pressure inside the duct exceeds this value, the compression block lifts to overcome the obstacle, which provides perfect protection of the duct, which in extreme cases with pumps classics of the prior art may even burst.
- cylinders therefore provides a triple advantage: a first advantage in that they allow a easy, fast, technically simple and yet easy to operate compression block automation, a second advantage what they allow precise adjustment of the force of compression, and a third advantage in that they provide perfectly centered and balanced flattening of the duct straight.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Description
- la figure 1 représente une coupe transversale verticale à travers une pompe péristaltique selon la présente invention ; et
- la figure 2 représente une vue en section verticale longitudinale à travers la pompe péristaltique de la figure 1.
Claims (6)
- Pompe péristaltique comportant un stator (2) qui supporte un conduit souple rectiligne écrasable (3) et des moyens de compression (1) pour générer un écrasement local se déplaçant le long dudit conduit souple (3), lesdits moyens de compression (1) étant pourvus de moyens de déplacement (11) pour les déplacer par rapport audit stator (2) entre une position de compression dans laquelle le conduit (3) est aplati avec une certaine force et une position dégagée dans laquelle le conduit (3) n'est soumis à aucune compression de la part desdits moyens de compression (1), caractérisée en ce que les moyens de déplacement comprennent deux moyens d'actionnement (30) montés pour agir de manière équilibrée sur les moyens de compression (1).
- Pompe péristaltique selon la revendication 1, dans laquelle les moyens d'actionnement comprennent au moins une paire de vérins (30).
- Pompe péristaltique selon la revendication 2, dans laquelle les vérins sont des vérins pneumatiques.
- Pompe péristaltique selon la revendication 2, dans laquelle les vérins (30) sont reliés à une même source d'air comprimé
- Pompe péristaltique selon la revendication 2, 3 ou 4, dans laquelle les moyens de compression se présentent sous la forme d'un bloc de compression (1) monté sur le stator (2), les deux vérins (30) étant respectivement montés de part et d'autre du bloc de compression.
- Pompe péristaltique selon l'une quelconque des revendications 2 à 5, dans laquelle les vérins (30) sont des vérins à double effet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9612766A FR2754860B1 (fr) | 1996-10-21 | 1996-10-21 | Pompe peristaltique a galets debrayables |
| FR9612766 | 1996-10-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0837242A1 EP0837242A1 (fr) | 1998-04-22 |
| EP0837242B1 true EP0837242B1 (fr) | 2001-07-18 |
Family
ID=9496828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97402480A Expired - Lifetime EP0837242B1 (fr) | 1996-10-21 | 1997-10-20 | Pompe péristaltique à galets débrayables |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0837242B1 (fr) |
| DE (1) | DE69705689T2 (fr) |
| FR (1) | FR2754860B1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2991010B1 (fr) * | 2012-05-23 | 2019-05-10 | Physidia | Pompe peristaltique lineaire |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2537220A1 (fr) * | 1982-06-03 | 1984-06-08 | Sermem Sa | Pompe peristaltique |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1140820B (de) * | 1953-08-03 | 1962-12-06 | Nikolaus Laing | Schlauchpumpe |
| CH519107A (fr) * | 1970-08-14 | 1972-02-15 | Martini Giancarlo | Machine pour le transfert de matériaux denses |
| JPH0720009A (ja) * | 1993-06-16 | 1995-01-24 | Shimadzu Corp | 分析装置 |
-
1996
- 1996-10-21 FR FR9612766A patent/FR2754860B1/fr not_active Expired - Fee Related
-
1997
- 1997-10-20 DE DE1997605689 patent/DE69705689T2/de not_active Expired - Lifetime
- 1997-10-20 EP EP97402480A patent/EP0837242B1/fr not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2537220A1 (fr) * | 1982-06-03 | 1984-06-08 | Sermem Sa | Pompe peristaltique |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69705689D1 (de) | 2001-08-23 |
| DE69705689T2 (de) | 2002-06-13 |
| FR2754860A1 (fr) | 1998-04-24 |
| FR2754860B1 (fr) | 2001-12-21 |
| EP0837242A1 (fr) | 1998-04-22 |
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