ES2372113T3 - PERISTALTIC PUMP, METHOD FOR MANUFACTURING A FLEXIBLE TUBE FOR HER, AND A FLEXIBLE TUBE FOR SUCH PUMP. - Google Patents
PERISTALTIC PUMP, METHOD FOR MANUFACTURING A FLEXIBLE TUBE FOR HER, AND A FLEXIBLE TUBE FOR SUCH PUMP. Download PDFInfo
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- ES2372113T3 ES2372113T3 ES07104378T ES07104378T ES2372113T3 ES 2372113 T3 ES2372113 T3 ES 2372113T3 ES 07104378 T ES07104378 T ES 07104378T ES 07104378 T ES07104378 T ES 07104378T ES 2372113 T3 ES2372113 T3 ES 2372113T3
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- flexible tube
- pressing
- pump
- fluid medium
- peristaltic pump
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- 230000002572 peristaltic effect Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000003825 pressing Methods 0.000 claims abstract description 61
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 229920006342 thermoplastic vulcanizate Polymers 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 8
- 239000008187 granular material Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 28
- 229920001971 elastomer Polymers 0.000 claims description 14
- 239000005060 rubber Substances 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 5
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 239000011440 grout Substances 0.000 abstract 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 7
- 238000005086 pumping Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 235000012438 extruded product Nutrition 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- 235000004213 low-fat Nutrition 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920003031 santoprene Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
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- 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
- F04B43/0054—Special features particularities of the flexible members
- F04B43/0072—Special features particularities of the flexible members of 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
-
- 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
- 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
- F04B49/02—Stopping, starting, unloading or idling control
-
- 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
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/04—PTFE [PolyTetraFluorEthylene]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
- F05C2225/08—Thermoplastics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Bomba peristáltica (1) para hacer que circule un medio fluido, tal como un líquido, un gas, una lechada, un material granulado o una combinación de dos o más de los mismos, cuya bomba (1) comprende: un alojamiento (2) de bomba; una superficie de prensado (3) presente en este alojamiento (2) de bomba; un tubo flexible (4) que se puede deformar elásticamente, una parte del cual discurre contra la superficie de prensado (3), cuyo tubo flexible (4) tiene una admisión (6) para un medio fluido y una descarga (7) para un medio fluido; y unos medios de prensado (8) con un número de elementos de prensado colocados de forma equidistante, tales como unos rodillos o levas (9, 10); cuyos medios de prensado (8) se pueden impulsar de tal manera que los elementos de prensado (9, 10) se muevan a lo largo del tubo flexible (4); y cuyos elementos de prensado (9, 10), durante el funcionamiento, prensan la parte de tubo flexible que está en contacto con el elemento de prensado (9, 10) relevante contra dicha parte de superficie de prensado (3) al mismo tiempo que comprimen y cierran localmente la parte de tubo flexible; estas operaciones se realizan de tal manera que, durante la impulsión de los medios de prensado (8), se aspira un medio fluido a través de la admisión (6) de medio fluido y se descarga a presión a través de la descarga (7) de medio fluido; estando situados en un baño (15) con lubricante la superficie de prensado (3), el tubo flexible (4) y los medios de prensado (8) con los elementos de prensado (9, 10); caracterizado porque el tubo flexible (4) no está reforzado ni es estratificado, y consiste exclusivamente en un vulcanizado termoplástico homogéneo (TPV).Peristaltic pump (1) to circulate a fluid medium, such as a liquid, a gas, a grout, a granulated material or a combination of two or more thereof, whose pump (1) comprises: a housing (2) pump a pressing surface (3) present in this pump housing (2); a flexible tube (4) that can be elastically deformed, a part of which runs against the pressing surface (3), whose flexible tube (4) has an intake (6) for a fluid medium and a discharge (7) for a fluid medium; and pressing means (8) with a number of pressing elements positioned equidistant, such as rollers or cams (9, 10); whose pressing means (8) can be driven in such a way that the pressing elements (9, 10) move along the flexible tube (4); and whose pressing elements (9, 10), during operation, press the part of the flexible tube that is in contact with the relevant pressing element (9, 10) against said pressing surface part (3) at the same time as compress and close the flexible tube part locally; These operations are carried out in such a way that, during the pressing of the pressing means (8), a fluid medium is aspirated through the admission (6) of fluid medium and is discharged under pressure through the discharge (7) of fluid medium; the pressing surface (3), the flexible tube (4) and the pressing means (8) with the pressing elements (9, 10) being located in a bath (15) with lubricant; characterized in that the flexible tube (4) is not reinforced or stratified, and consists exclusively of a homogeneous thermoplastic vulcanizate (TPV).
Description
Bomba peristaltica, metodo para fabricar un tubo flexible para ella, y un tubo flexible para dicha bomba. Peristaltic pump, method for manufacturing a flexible tube for it, and a flexible tube for said pump.
La invenci6n se refiere a una bomba peristaltica, un tubo flexible para dicha bomba y un metodo para fabricar dicho tubo flexible. La bomba peristaltica se ha disenado para hacer circular a un medio fluido, tal como un lfquido, un gas, 5 una lechada, un granulado o una combinaci6n de dos o mas de los mismos, y comprende: The invention relates to a peristaltic pump, a flexible tube for said pump and a method for manufacturing said flexible tube. The peristaltic pump has been designed to circulate a fluid medium, such as a liquid, a gas, a slurry, a granulate or a combination of two or more thereof, and comprises:
un alojamiento de bomba; a pump housing;
una superficie de prensado presente en este alojamiento de bomba; a pressing surface present in this pump housing;
un tubo flexible elasticamente deformable, una parte del cual discurre contra la superficie de prensado, cuyo tubo flexible tiene una admisi6n de medio fluido y una descarga de medio fluido; y an elastically deformable flexible tube, a part of which runs against the pressing surface, whose flexible tube has an inlet of fluid medium and a discharge of fluid medium; Y
10 unos medios de prensado con un numero de elementos de prensado colocados de forma equidistante, tales como unos rodillos o unas levas; 10 a pressing means with a number of pressing elements positioned equidistant, such as rollers or cams;
cuyos medios de prensado se pueden impulsar de tal manera que los elementos de prensado se muevan a lo largo del tubo flexible; y whose pressing means can be driven in such a way that the pressing elements move along the flexible tube; Y
cuyos elementos de prensado durante el funcionamiento presionan la parte de tubo flexible que este en contacto whose pressing elements during operation press the part of the flexible tube that is in contact
15 con el elemento de prensado relevante contra dicha parte de superficie de prensado al mismo tiempo que comprimen localmente y cierran la parte de tubo flexible; 15 with the relevant pressing element against said pressing surface part while simultaneously compressing and closing the flexible tube part;
esto se realiza de tal manera que, durante la impulsi6n de los medios de prensado, el medio fluido es aspirado a traves de la admisi6n de medio fluido y descargado a presi6n a traves de la descarga de medio fluido; This is done in such a way that, during the pressing of the pressing means, the fluid medium is aspirated through the admission of fluid medium and discharged under pressure through the discharge of fluid medium;
la superficie de prensado, el tubo flexible y los medios de prensado con los elementos de prensado estan situados 20 en un bano con lubricante. The pressing surface, the flexible tube and the pressing means with the pressing elements are located 20 in a bath with lubricant.
Dicha bomba peristaltica es conocida, por ejemplo, por el documento WO-A-88/05868. Said peristaltic pump is known, for example, from WO-A-88/05868.
Debido a la compresi6n local, y de ese modo al cierre del tubo flexible por los elementos de prensado, y al desplazamiento de esta compresi6n bajo la influencia de los elementos de prensado impulsados a lo largo del tubo flexible, el medio fluido presente en el tubo flexible sera empujado a lo largo del mismo. Una vez que haya pasado Due to the local compression, and thus to the closing of the flexible tube by the pressing elements, and to the displacement of this compression under the influence of the pressing elements driven along the flexible tube, the fluid medium present in the tube Flexible will be pushed along it. Once it has passed
25 un elemento de prensado, la forma del tubo flexible se recupera debido a sus propiedades elasticas. Merced a este mecanismo, el medio fluido se aspira al interior del tubo flexible en el lado de succi6n. A pressing element, the shape of the flexible tube is recovered due to its elastic properties. Thanks to this mechanism, the fluid medium is aspirated into the flexible tube on the suction side.
Debido a que se asegura que el tubo flexible esta siempre cerrado a presi6n localmente por como mfnimo un elemento de prensado que actua localmente, la bomba funciona como una valvula de cierre, de tal manera que el lado de descarga y el lado de aspiraci6n esten siempre separados entre sf. Because it is ensured that the flexible tube is always closed locally under pressure for at least one locally acting pressing element, the pump functions as a shut-off valve, such that the discharge side and the suction side are always separated between sf.
30 El tubo flexible experimenta unos esfuerzos de carga en fases sucesivas localmente en la bomba peristaltica por la acci6n de los elementos de prensado que pasan a presi6n. Esto causa fatiga en el material del tubo flexible. Una grieta por fatiga que se produzca de ese modo tras un perfodo de tiempo puede resultar eventualmente en la rotura del tubo flexible, por lo que el medio fluido que se ha bombeado y que se tiene que bombear puede circular fuera del tubo flexible, y el lubricante que posiblemente este presente en la parte exterior del tubo flexible se puede mezclar 30 The flexible tube undergoes loading efforts in successive phases locally in the peristaltic pump due to the action of the pressing elements that pass under pressure. This causes fatigue in the flexible tube material. A fatigue crack that occurs after a period of time may eventually result in the rupture of the flexible tube, whereby the fluid medium that has been pumped and that has to be pumped can circulate outside the flexible tube, and the lubricant that may be present on the outside of the flexible tube can be mixed
35 con el medio fluido bombeado. Como el proceso de la formaci6n de grietas depende de muchos factores, es diffcil predecir el momento en el que se producira la rotura. Una rotura ocasiona las rupturas tecnicas anteriormente descritas, entre otras, y resulta en una tarea de asistencia tecnica imprevista en un momento del tiempo que no se puede predecir. 35 with the fluid medium pumped. Since the process of crack formation depends on many factors, it is difficult to predict the time at which the breakage will occur. A break causes the technical ruptures described above, among others, and results in an unforeseen technical assistance task at a time that cannot be predicted.
A la vista de lo anteriormente expuesto, un objeto de la invenci6n es aumentar sustancialmente la vida util del tubo 40 flexible. In view of the foregoing, an object of the invention is to substantially increase the useful life of the flexible tube 40.
Adicionalmente, las bombas peristalticas del tipo conocido anteriormente descrito a menudo no son competitivas con otras bombas de desplazamiento positivo, porque la capacidad de bombeo de las bombas peristalticas es relativamente pequena en relaci6n con sus dimensiones y su precio de coste. Se podrfa considerar un incremento de la capacidad mediante un incremento de la velocidad de rotaci6n, si no fuera por el hecho de que la vida util del 45 tubo flexible se acortarfa de ese modo enormemente por las bombas peristalticas usuales. Por tanto, un objeto adicional de la invenci6n es modificar la bomba conocida de tal manera que se prolongue la vida util del tubo flexible Additionally, peristaltic pumps of the known type described above are often not competitive with other positive displacement pumps, because the pumping capacity of peristaltic pumps is relatively small in relation to their dimensions and cost price. An increase in capacity could be considered by increasing the rotation speed, if it were not for the fact that the useful life of the flexible tube would thus be greatly shortened by the usual peristaltic pumps. Therefore, a further object of the invention is to modify the known pump in such a way that the useful life of the flexible tube is prolonged.
o que se aumente la capacidad de la bomba mediante el incremento de la velocidad de rotaci6n de la bomba. or that the capacity of the pump is increased by increasing the speed of rotation of the pump.
Una bomba conocida por el documento US-A- 2006/001877 comprende un tubo flexible estratificado, en el que el estrato interior consiste en politetrafluoretileno (en adelante PTFE) con el que la resistencia qufmica del tubo flexible 50 se lleva a un nivel previsto. El portador o carcasa puede consistir en varios elast6meros diferentes, por ejemplo un material disponible comercialmente con el nombre de Santoprene. Segun la patente de EE.UU. que se acaba de mencionar, el tubo flexible de bomba tiene la resistencia qufmica de un material de plastico fluorado y la resiliencia A pump known from US-A-2006/001877 comprises a stratified flexible tube, in which the inner layer consists of polytetrafluoroethylene (hereinafter PTFE) with which the chemical resistance of the flexible tube 50 is brought to an expected level. The carrier or housing may consist of several different elastomers, for example a commercially available material under the name of Santoprene. According to US Pat. Just mentioned, the pump hose has the chemical resistance of a fluorinated plastic material and resilience
E07104378 17-11-2011 E07104378 11-17-2011
de un elast6mero. of an elastomer.
Sin embargo, el problema que se plantea en este tubo flexible conocido estriba en que, debido a la compresi6n y expansi6n repetidas continuamente, la bomba esta sometida a una delaminaci6n prematura como consecuencia de las intensas fuerzas de cizallamiento que se producen repetidamente cada vez. Por ello, el tubo flexible llega a ser inutilizable en un breve perfodo de tiempo, puesto que se rompe la integridad del estrato de PTFE y por tanto la resistencia qufmica del tubo flexible llega a ser determinada por la del material del portador, que no se ha disenado o elegido especialmente para este fin. En consecuencia, la vida util de esta bomba conocida deja mucho que desear. However, the problem that arises in this known flexible tube is that, due to repeated compression and expansion continuously, the pump is subjected to premature delamination as a result of the intense shear forces that occur repeatedly each time. Therefore, the flexible tube becomes unusable in a short period of time, since the integrity of the PTFE layer is broken and therefore the chemical resistance of the flexible tube becomes determined by that of the carrier material, which is not has designed or chosen especially for this purpose. Consequently, the life of this known pump leaves much to be desired.
A la vista de lo anteriormente expuesto, la invenci6n provee una bomba peristaltica del tipo especificado en el preambulo que tiene la propiedad caracterfstica de que el tubo flexible no esta reforzado ni estratificado, y consiste exclusivamente en un vulcanizado termoplastico (en adelante TPV) homogeneo In view of the foregoing, the invention provides a peristaltic pump of the type specified in the preamble that has the characteristic property that the flexible tube is not reinforced or stratified, and consists exclusively of a homogenous thermoplastic vulcanized (hereinafter TPV)
N6tese que tambien el documento US-A-2 428 619 muestra un posible principio mecanico de una bomba para tubo flexible lubricada. Se hace menci6n, en un sentido muy general y sin ninguna especificaci6n adicional, de un material plastico tal como un caucho natural, un caucho sintetico o un material similar que sea adecuado para el medio fluido que vaya a circular. Note that also US-A-2 428 619 shows a possible mechanical principle of a lubricated hose pump. Mention is made, in a very general sense and without any additional specification, of a plastic material such as a natural rubber, a synthetic rubber or a similar material that is suitable for the fluid medium to be circulated.
Sin embargo, en ningun caso apunta esta publicaci6n en la direcci6n de la posibilidad de que el tubo flexible consista exclusivamente en un vulcanizado termoplastico homogeneo segun la divulgaci6n de la presente invenci6n. A este respecto, se llama tambien la atenci6n al hecho de que la mencionada patente de EE. UU. se refiere a un tubo flexible con una estructura estratificada, siendo esto incluso totalmente contrario a un importante principio basico de la invenci6n . However, in no case does this publication point in the direction of the possibility that the flexible tube consists exclusively of a homogenous thermoplastic vulcanizate according to the disclosure of the present invention. In this regard, attention is also drawn to the fact that the aforementioned US Pat. UU. it refers to a flexible tube with a stratified structure, this being even totally contrary to an important basic principle of the invention.
Hay que hacer notar tambien a este respecto que el tubo flexible segun la invenci6n, de acuerdo con la definici6n dada, esta exento de cualquier modalidad de refuerzo tal como fibras empotradas con resistencia a la tracci6n, por ejemplo en la forma de una alfombrilla, como es conocido y usual per se para las bombas de tubo flexible. It should also be noted in this regard that the flexible tube according to the invention, in accordance with the given definition, is exempt from any reinforcement modality such as embedded fibers with tensile strength, for example in the form of a mat, such as It is known and usual per se for flexible tube pumps.
En una realizaci6n adicional, la bomba peristaltica segun la invenci6n tiene la propiedad caracterfstica de que es del tipo rotatorio; In a further embodiment, the peristaltic pump according to the invention has the characteristic property that it is of the rotary type;
la superficie de prensado es curva, y al menos una parte de la misma toma la forma general de un arco de cfrculo con un eje geometrico central; the pressing surface is curved, and at least a part of it takes the general shape of a circle arc with a central geometric axis;
los medios de prensado se disenan como un rotor; the pressing means are designed as a rotor;
el elemento de prensado se coloca en posiciones iguales angulares y radiales; y the pressing element is placed in equal angular and radial positions; Y
el rotor se puede impulsar a rotaci6n alrededor de un eje geometrico central. The rotor can be rotated around a central geometric axis.
N6tese que, si bien esta bomba rotatoria tiene una construcci6n distinta a la de, por ejemplo, una bomba lineal segun la invenci6n, sin embargo los principios implementados en la misma son iguales. Por tanto, los resultados de la divulgaci6n segun la invenci6n se pueden realizar facilmente en la bomba rotatoria. Note that, although this rotary pump has a construction different from that of, for example, a linear pump according to the invention, however the principles implemented therein are the same. Therefore, the results of the disclosure according to the invention can be easily carried out in the rotary pump.
La invenci6n se refiere ademas a un metodo para fabricar un tubo flexible para una bomba peristaltica del tipo especificado, de acuerdo con cuyo metodo, un material granulado que consiste en caucho y un plastico termoplastico se prensa a traves de una boquilla anular de extrusi6n a una temperatura y a una presi6n incrementadas, y el producto extrudido parecido a un tubo flexible que sale de la boquilla de extrusi6n se enfrfa, y del producto extrudido asf obtenido se separa un tubo flexible de la longitud prevista. The invention further relates to a method for manufacturing a flexible tube for a peristaltic pump of the specified type, according to which method, a granulated material consisting of rubber and a thermoplastic plastic is pressed through an annular extrusion nozzle to a temperature and pressure increased, and the extruded product resembling a flexible tube leaving the extrusion nozzle is cooled, and from the extruded product thus obtained a flexible tube is separated from the intended length.
Segun este metodo se usa un material "nuevo", es decir, un material que en principio no se haya usado anteriormente. According to this method, a "new" material is used, that is, a material that in principle has not been previously used.
La elecci6n del material indicado segun la invenci6n es adecuada tambien para reciclar, por ejemplo, tubos flexibles usados del tipo que responde a la invenci6n. En este sentido, la invenci6n provee tambien un metodo para fabricar un tubo flexible para una bomba, de acuerdo con cuyo metodo, un tubo flexible fabricado con anterioridad y posiblemente ya usado se muele con grano fino de tal manera que se obtenga un producto granulado que consiste en caucho y un plastico termoplastico, cuyo producto granulado se prensa a traves de una boquilla anular de extrusi6n a una temperatura y presi6n incrementadas, y el producto extrudido con aspecto de un tubo flexible que sale de la boquilla de extrusi6n se enfrfa, y del producto extrudido asf obtenido se separa un tubo flexible de la longitud prevista. The choice of the indicated material according to the invention is also suitable for recycling, for example, used flexible tubes of the type that responds to the invention. In this sense, the invention also provides a method for manufacturing a flexible tube for a pump, according to which method, a flexible tube previously manufactured and possibly already used is ground with fine grain so that a granulated product is obtained which It consists of rubber and a thermoplastic plastic, the granulated product of which is pressed through an annular extrusion nozzle at an increased temperature and pressure, and the extruded product with the appearance of a flexible tube leaving the extrusion nozzle is cooled, and Extruded product thus obtained separates a flexible tube of the expected length.
La invenci6n se refiere ademas a un tubo flexible para una bomba peristaltica del tipo que responde a la invenci6n. Este tubo flexible tiene la propiedad caracterfstica, de acuerdo con la invenci6n, de que el tubo flexible no esta reforzado ni es estratificado, y consiste exclusivamente en un producto vulcanizado termoplastico (TPV). The invention also relates to a flexible tube for a peristaltic pump of the type that responds to the invention. This flexible tube has the characteristic property, according to the invention, that the flexible tube is not reinforced or stratified, and consists exclusively of a thermoplastic vulcanized product (TPV).
A continuaci6n se exponen tres definiciones cuyo objeto es aclarar la invenci6n: The following are three definitions whose purpose is to clarify the invention:
(1) Un vulcanizado termoplastico, o TPV, es un elast6mero termoplastico (en adelante TPE) con una fase de (1) A thermoplastic vulcanizate, or TPV, is a thermoplastic elastomer (hereinafter TPE) with a phase of
E07104378 17-11-2011 E07104378 11-17-2011
caucho de enlaces cruzados qufmicamente producido por medio de una vulcanizaci6n dinamica. Chemically cross-linked rubber produced by means of dynamic vulcanization.
- (2) (2)
- Un elast6mero termoplastico, o TPE, forma parte de una familia de materiales parecidos al caucho los cuales, a diferencia de los cauchos vulcanizados usuales, se pueden procesar y reciclar de la misma manera que los materiales termoplasticos. Los elast6meros termoplasticos proporcionan unas prestaciones y unas propiedades que corresponden a los productos usuales de caucho curado, pero se pueden procesar con la velocidad, el rendimiento, y las ventajas econ6mico-comerciales de los termoplasticos. A thermoplastic elastomer, or TPE, is part of a family of rubber-like materials which, unlike the usual vulcanized rubbers, can be processed and recycled in the same way as thermoplastic materials. Thermoplastic elastomers provide performance and properties that correspond to the usual cured rubber products, but can be processed with the speed, performance, and economic-commercial advantages of thermoplastics.
- (3) (3)
- Vulcanizaci6n dinamica es un proceso de fundir una mezcla fntima de un polfmero termoplastico y un polfmero de caucho adecuadamente reactivo con el fin de obtener un TPE con una fase de caucho de enlaces cruzados qufmicamente, lo que resulta en unas propiedades que estan mas cerca de las de un caucho termoplastico que en el caso de la misma composici6n que no tenga los enlaces cruzados. Dynamic vulcanization is a process of melting a intimate mixture of a thermoplastic polymer and a suitably reactive rubber polymer in order to obtain a TPE with a chemically cross-linked rubber phase, resulting in properties that are closer to the of a thermoplastic rubber that in the case of the same composition that does not have cross-links.
A continuaci6n se aclara la invenci6n con referencia a la unica figura. The invention will now be clarified with reference to the only figure.
Esta figura muestra un corte transversal a traves de una bomba peristaltica 1 segun la invenci6n, del tipo rotatorio. This figure shows a cross-section through a peristaltic pump 1 according to the invention, of the rotary type.
La bomba 1 comprende: Pump 1 comprises:
un alojamiento 2 de bomba; a pump housing 2;
una superficie de prensado presente en este alojamiento 2 de bomba y que tiene la forma general de un medio cilindro que se extiende durante 180� y que tiene un eje geometrico central 5; a pressing surface present in this pump housing 2 and having the general shape of a half cylinder that extends during 180� and has a central geometric axis 5;
un tubo flexible 4 elasticamente deformable que tiene una admisi6n 6 de medio fluido y una descarga 7 de medio fluido; un rotor 8 con dos levas 9, 10 de prensado que estan colocadas simetricamente entre sf, es decir, en angulos mutuos de 180� e iguales posiciones radiales con respecto al eje geometrico central 5, y tambien al eje geometrico central 8, y que en esta realizaci6n se han llevado a la practica como unas levas parcialmente cilfndricas con respectivos ejes centrales 11, 12, cuyo rotor 8 se puede impulsar a rotaci6n mediante unos medios de impulsi6n (que no se han mostrado); an elastically deformable flexible tube 4 having an intake 6 of fluid medium and a discharge 7 of fluid medium; a rotor 8 with two pressing cams 9, 10 which are symmetrically positioned between each other, that is, at mutual angles of 180� and equal radial positions with respect to the central geometric axis 5, and also to the central geometric axis 8, and which in this embodiment has been implemented as partially cylindrical cams with respective central axes 11, 12, whose rotor 8 can be driven to rotation by means of drive means (which have not been shown);
cuyas levas 9, 10 de prensado presionan durante el funcionamiento la parte del tubo flexible 4 que esta en contacto con la leva relevante de prensado 9, 10 contra dicha superficie de prensado 3 al mismo tiempo que comprimen y cierran localmente la parte de tubo flexible; whose pressing cams 9, 10 press during the operation the part of the flexible tube 4 which is in contact with the relevant pressing cam 9, 10 against said pressing surface 3 while simultaneously compressing and closing the flexible tube part;
cuya operaci6n se realiza de tal manera que, durante la rotaci6n del rotor 8, se aspira un medio fluido a traves de la admisi6n 6 de medio fluido y se descarga a presi6n a traves de la descarga 7 de medio fluido. whose operation is performed in such a way that, during the rotation of the rotor 8, a fluid medium is aspirated through the intake 6 of fluid medium and is discharged under pressure through the discharge 7 of fluid medium.
El medio fluido aspirado se ha indicado con una flecha 13. El medio fluido descargado a presi6n se ha indicado con una flecha 14. The aspirated fluid medium has been indicated with an arrow 13. The fluid discharged medium has been indicated with an arrow 14.
La construcci6n de la bomba 1 es conocida per se. El invento se basa en la elecci6n del material del tubo flexible 3. Este material es un vulcanizado termoplastico (TPV). The construction of the pump 1 is known per se. The invention is based on the choice of the material of the flexible tube 3. This material is a thermoplastic vulcanizate (TPV).
Este material muy adecuado comprende caucho de etileno-propileno-dieno (en adelante EPDM) y polipropileno (en adelante PP). Este material tiene una excelente resistencia a los acidos, bases, sustancias oxidantes, alcoholes, aldehidos y productos alimenticios bajos en grasa. This very suitable material comprises ethylene-propylene-diene rubber (hereinafter EPDM) and polypropylene (hereinafter PP). This material has excellent resistance to acids, bases, oxidizing substances, alcohols, aldehydes and low-fat food products.
Otra opci6n para el material del tubo flexible es que comprenda caucho nitrilo (en adelante NB�) y polipropileno (PP). Un ejemplo es el �eolastTM fabricado por Advanced Elastomer Systems, Belgica. Este material es muy adecuado para el bombeo de aceites, bases y acidos diluidos. Another option for the flexible tube material is that it comprises nitrile rubber (hereinafter NB�) and polypropylene (PP). An example is the �eolastTM manufactured by Advanced Elastomer Systems, Belgium. This material is very suitable for pumping oils, bases and diluted acids.
Todavfa otra opci6n para el material del tubo flexible es que comprenda caucho nitrilo (en adelante NB�) y policloruro de vinilo (en adelante PVC). Un ejemplo del mismo es NitrovinTM fabricado por Vi-Chem Corporation, EE.UU. Este material es adecuado para bombear aceites y combustibles, Yet another option for the flexible tube material is that it comprises nitrile rubber (hereinafter NB�) and polyvinyl chloride (hereinafter PVC). An example of this is NitrovinTM manufactured by Vi-Chem Corporation, USA. This material is suitable for pumping oils and fuels,
Todavfa otra elecci6n para el material del tubo flexible es que comprenda caucho de poliacrilato (en adelante ACM) y poliamida (en adelante PA). Un ejemplo del mismo es el �eotherm� fabricado por �eon Chemicals, EE.UU. Este material es muy adecuado para bombear aceite , combustibles e hidrocarburos calientes. Yet another choice for the flexible tube material is that it comprises polyacrylate rubber (hereinafter ACM) and polyamide (hereinafter PA). An example of this is the �eotherm� manufactured by �eon Chemicals, USA. This material is very suitable for pumping oil, fuels and hot hydrocarbons.
En el espacio 15 de la bomba esta situado un lubricante lfquido. Un producto muy adecuado como elemento lfquido que actua como lubricante y refrigerante es el disponible comercialmente con el nombre de "Lubricante genuino Bredel para tubo flexible" Es este un lfquido con una viscosidad dinamica de alrededor de 600-700 mPa.s (20�C).Este lubricante y refrigerante se ha registrado en los Estaos Unidos en la NSF (National Science Foundation) con el numero 123204 A liquid lubricant is located in the space 15 of the pump. A very suitable product as a liquid element that acts as a lubricant and coolant is commercially available under the name "Bredel Genuine Flexible Tube Lubricant" This is a liquid with a dynamic viscosity of around 600-700 mPa.s (20�C) .This lubricant and coolant has been registered in the United States in the NSF (National Science Foundation) with the number 123204
En las pruebas se ha demostrado que la combinaci6n del material para el tubo flexible segun la invenci6n y de una bomba peristaltica de acuerdo con la invenci6n, en donde la superficie de prensado 3, el tubo flexible 4 y el rotor 8 con las levas de prensado 9, 10 esten situados en un lubricante, puede tener una vida util que es entre tres y cuatro In the tests it has been shown that the combination of the material for the flexible tube according to the invention and of a peristaltic pump according to the invention, wherein the pressing surface 3, the flexible tube 4 and the rotor 8 with the pressing cams 9, 10 are located in a lubricant, can have a useful life that is between three and four
E07104378 17-11-2011 E07104378 11-17-2011
veces mas larga que: times longer than:
(1) cuando se usa el mismo material para un tubo flexible en una bomba peristaltica no lubricada, en la que las levas de prensado 9, 10 se han reemplazado por rodillos que rotan libremente; (1) when the same material is used for a flexible tube in a non-lubricated peristaltic pump, in which the pressing cams 9, 10 have been replaced by freely rotating rollers;
(2) cuando se use cualquier otro material no ensayado en una bomba peristaltica no lubricada con 5 rodillos; y (2) when any other material not tested in a non-lubricated peristaltic pump with 5 rollers is used; Y
- (3) (3)
- en una bomba peristaltica lubricada con levas fijas y materiales de tubo flexible usuales, por ejemplo tubos flexibles de caucho provistos opcionalmente de un refuerzo; in a peristaltic pump lubricated with fixed cams and usual flexible tube materials, for example rubber flexible tubes optionally provided with a reinforcement;
- (4) (4)
- en la bomba segun el documento US-A-2004/0018777, en cuya bomba el tubo flexible tiene una fuerte tendencia a la delaminaci6n como resultado del cizallamiento, y por tanto tiene una vida util corta. in the pump according to US-A-2004/0018777, in which pump the flexible tube has a strong tendency to delamination as a result of shearing, and therefore has a short service life.
10 En las pruebas se ha demostrado tambien que la combinaci6n permite un caudal de bombeo entre tres y diez veces mayor por incrementar la rotaci6n del rotor 8. 10 The tests have also shown that the combination allows a pumping rate between three and ten times greater by increasing the rotation of the rotor 8.
E07104378 17-11-2011 E07104378 11-17-2011
Claims (11)
- 2. 2.
- Una bomba peristaltica (1) segun la reivindicaci6n 1, en la que el material del tubo flexible (4) comprende caucho de etileno-propileno-dieno (EPDM) y polipropileno (PP). A peristaltic pump (1) according to claim 1, wherein the flexible tube material (4) comprises ethylene-propylene-diene rubber (EPDM) and polypropylene (PP).
- 3. 3.
- Una bomba peristaltica (1) segun la reivindicaci6n 1, en la que el material del tubo flexible (4) comprende caucho nitrilo (NB�) y polipropileno (PP). A peristaltic pump (1) according to claim 1, wherein the flexible tube material (4) comprises nitrile rubber (NB�) and polypropylene (PP).
- 4. Four.
- Una bomba peristaltica (1) segun la reivindicaci6n 1, en la que el material del tubo flexible (4) comprende caucho nitrilo (NB�) y policloruro de vinilo (PVC). A peristaltic pump (1) according to claim 1, wherein the flexible tube material (4) comprises nitrile rubber (NB�) and polyvinyl chloride (PVC).
- 5. 5.
- Una bomba peristaltica (1) segun la reivindicaci6n 1, en la que el material del tubo flexible (4) comprende caucho de poliacrilato (ACM) y poliamida (PA). A peristaltic pump (1) according to claim 1, wherein the flexible tube material (4) comprises polyacrylate rubber (ACM) and polyamide (PA).
- 6. 6.
- Una bomba peristaltica (1) segun cualquiera de las reivindicaciones precedentes, en la que el material del tubo flexible (4) tiene una dureza Shore A en el intervalo comprendido entre 55 y 95. A peristaltic pump (1) according to any of the preceding claims, wherein the material of the flexible tube (4) has a Shore A hardness in the range between 55 and 95.
- 7. 7.
- Una bomba peristaltica (1) segun cualquiera de las reivindicaciones precedentes, caracterizada porque la bomba (1) es del tipo lineal. A peristaltic pump (1) according to any of the preceding claims, characterized because The pump (1) is of the linear type.
- 8. 8.
- Una bomba peristaltica (1) segun cualquiera de las reivindicaciones anteriores, caracterizada porque la bomba (1) es del tipo rotatorio; la superficie de prensado (3) es curva y al menos una parte de la misma adopta la forma general de un arco de A peristaltic pump (1) according to any of the preceding claims, characterized because the pump (1) is of the rotary type; the pressing surface (3) is curved and at least a part of it adopts the general shape of an arc of
- 10. 10.
- Un metodo segun la reivindicaci6n 9, de acuerdo con cuyo metodo un tubo flexible (4) fabricado anteriormente y posiblemente ya usado se muele con grano fino de tal manera que se obtenga el producto granulado� A method according to claim 9, according to which method a flexible tube (4) manufactured previously and possibly already used is ground with fine grain so that the granulated product is obtained�
- 11. eleven.
- Un tubo flexible para una bomba peristaltica (1) segun cualquiera de las reivindicaciones 1 a 8, A flexible tube for a peristaltic pump (1) according to any one of claims 1 to 8,
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2000032 | 2006-03-20 | ||
| NL2000032A NL2000032C2 (en) | 2006-03-20 | 2006-03-20 | Peristaltic pump, method for manufacturing a hose therefor, and hose for such a pump. |
Publications (1)
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| ES2372113T3 true ES2372113T3 (en) | 2012-01-16 |
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| ES07104378T Active ES2372113T3 (en) | 2006-03-20 | 2007-03-17 | PERISTALTIC PUMP, METHOD FOR MANUFACTURING A FLEXIBLE TUBE FOR HER, AND A FLEXIBLE TUBE FOR SUCH PUMP. |
Country Status (7)
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| US (1) | US20070224063A1 (en) |
| EP (1) | EP1847711B1 (en) |
| JP (1) | JP5064070B2 (en) |
| AT (1) | ATE533942T1 (en) |
| ES (1) | ES2372113T3 (en) |
| NL (1) | NL2000032C2 (en) |
| ZA (1) | ZA200702338B (en) |
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|---|---|---|---|---|
| DE102009060065C5 (en) * | 2009-12-22 | 2024-09-05 | Veritas Ag | Fluid line |
| US20120165735A1 (en) * | 2010-12-28 | 2012-06-28 | Sandra Keh | Devices and Methods for Reducing Electrical Noise in an Irrigated Electrophysiology Catheter System |
| WO2014092851A1 (en) | 2012-12-11 | 2014-06-19 | Alcon Research, Ltd. | Phacoemulsification hand piece with integrated aspiration and irrigation pump |
| ES2732180T3 (en) | 2013-11-05 | 2019-11-21 | Novartis Ag | Ophthalmic lubrication system and associated device |
| EP3509664B1 (en) | 2016-11-02 | 2022-08-03 | St. Jude Medical, Cardiology Division, Inc. | Interface tubing for peristaltic pump |
| WO2019005683A1 (en) | 2017-06-26 | 2019-01-03 | St. Jude Medical, Cardiology Division, Inc. | Irrigated catheter with retrograde flow |
| EP3483440B1 (en) | 2017-11-08 | 2020-05-27 | Oina VV AB | Peristaltic pump |
| US11672695B2 (en) | 2018-03-22 | 2023-06-13 | Artivion, Inc. | Central nervous system localized hypothermia apparatus and methods |
| BR112021021102A2 (en) * | 2019-04-30 | 2021-12-14 | Saint Gobain Performance Plastics Corp | Dissipative Peristaltic Pump Tubing |
| CN111156330B (en) * | 2020-01-08 | 2021-10-26 | 深圳铂今节能科技有限公司 | Energy-saving and environment-friendly multi-station periodic water circulation device |
| JP2024501470A (en) * | 2020-12-18 | 2024-01-12 | サン－ゴバン パフォーマンス プラスティックス コーポレイション | Tube for long life pump |
| CA3236702A1 (en) | 2021-11-02 | 2023-05-11 | Sepro Mineral Systems Corp. | Facilitating control of fluid or slurry movement in a collapsible tube |
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| US2428619A (en) * | 1944-11-06 | 1947-10-07 | Douglas Norvel | Rotary pump or the like |
| GB713239A (en) * | 1952-08-20 | 1954-08-04 | Ames Crosta Mills & Company Lt | Improvements in and relating to flexible tube pumps |
| SE317466B (en) * | 1966-08-01 | 1969-11-17 | Biotec Ab | |
| GB1205983A (en) * | 1967-08-11 | 1970-09-23 | Dunlop Co Ltd | Method for the manufacture of a hose |
| US3900545A (en) * | 1970-12-23 | 1975-08-19 | Amerace Corp | Process for producing oblong hose |
| GB2076068B (en) * | 1980-05-16 | 1983-11-09 | Smith & Nephew Ass | Peristaltic fluid-machines |
| DE3703124A1 (en) * | 1987-02-03 | 1988-08-11 | Manfred Streicher | HOSE PUMP |
| NL9000867A (en) * | 1990-04-12 | 1991-11-01 | Bredel Exploitatie Bv | HOSE PUMP WITH RETRACTABLE PRESS BODIES. |
| DE69432582T2 (en) * | 1993-10-28 | 2003-11-27 | Medrad, Inc. | System for the administration of liquids in several patients |
| FR2767742B1 (en) * | 1997-08-29 | 1999-11-26 | Itep Int | METHOD FOR MANUFACTURING A POROUS PIPE WITH A LIST, DEVICE FOR ITS IMPLEMENTATION, PIPE OBTAINED BY SAID METHOD AND USE OF SUCH A PIPE IN IRRIGATION |
| JP2001349476A (en) * | 1998-12-28 | 2001-12-21 | Mitsubishi Motors Corp | Vacuum hose |
| JP4558130B2 (en) * | 2000-03-17 | 2010-10-06 | 株式会社トップ | Syringe |
| JP3800944B2 (en) * | 2000-09-28 | 2006-07-26 | 東海ゴム工業株式会社 | Method for producing laminated rubber hose and laminated rubber hose |
| KR20030082578A (en) * | 2001-01-30 | 2003-10-22 | 파커-한니핀 코포레이션 | Thermoplastic reinforced hose construction and method of making the same |
| RU2272709C2 (en) * | 2004-01-21 | 2006-03-27 | Олег Леонидович Куликов | Method of molding of thermoplastic polymeric material, the device for its realization and the composition of the thermoplastic polymeric material |
| US20050170117A1 (en) * | 2004-01-31 | 2005-08-04 | Cleveland Rafael L. | Multi-layered hose |
| US8012555B2 (en) * | 2004-07-21 | 2011-09-06 | Maztech, Inc. | Fluoroplastic composite elastomer |
| US20060142491A1 (en) * | 2004-12-27 | 2006-06-29 | Freudenberg-Nok General Partnership | Thermoplastic vulcanizate with high temperature processing aid |
| US7424847B2 (en) * | 2005-05-25 | 2008-09-16 | Hart Arthur S | Diaphragm assembly for a pump |
-
2006
- 2006-03-20 NL NL2000032A patent/NL2000032C2/en not_active IP Right Cessation
-
2007
- 2007-03-17 ES ES07104378T patent/ES2372113T3/en active Active
- 2007-03-17 AT AT07104378T patent/ATE533942T1/en active
- 2007-03-17 EP EP07104378A patent/EP1847711B1/en not_active Not-in-force
- 2007-03-20 JP JP2007072552A patent/JP5064070B2/en not_active Expired - Fee Related
- 2007-03-20 US US11/725,969 patent/US20070224063A1/en not_active Abandoned
- 2007-03-20 ZA ZA200702338A patent/ZA200702338B/en unknown
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| EP1847711B1 (en) | 2011-11-16 |
| JP2007270832A (en) | 2007-10-18 |
| US20070224063A1 (en) | 2007-09-27 |
| NL2000032C2 (en) | 2007-09-21 |
| JP5064070B2 (en) | 2012-10-31 |
| ZA200702338B (en) | 2008-07-30 |
| ATE533942T1 (en) | 2011-12-15 |
| EP1847711A1 (en) | 2007-10-24 |
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