EP3004645A2 - Peristaltikpumpe mit verringerter pulsation und verwendung der peristaltikpumpe - Google Patents
Peristaltikpumpe mit verringerter pulsation und verwendung der peristaltikpumpeInfo
- Publication number
- EP3004645A2 EP3004645A2 EP14728970.6A EP14728970A EP3004645A2 EP 3004645 A2 EP3004645 A2 EP 3004645A2 EP 14728970 A EP14728970 A EP 14728970A EP 3004645 A2 EP3004645 A2 EP 3004645A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hose
- rotor
- saddle
- peristaltic pump
- rotation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002572 peristaltic effect Effects 0.000 title claims abstract description 108
- 230000010349 pulsation Effects 0.000 title claims abstract description 56
- 230000000694 effects Effects 0.000 claims abstract description 57
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 238000007654 immersion Methods 0.000 claims description 46
- 238000007789 sealing Methods 0.000 claims description 26
- 230000008859 change Effects 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 8
- 238000012886 linear function Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 238000002788 crimping Methods 0.000 claims 26
- 238000000605 extraction Methods 0.000 claims 2
- 238000005086 pumping Methods 0.000 abstract description 6
- 238000007493 shaping process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000007704 transition Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
-
- 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
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
-
- 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
- F04B43/1261—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 the rollers being placed at the outside of the tubular flexible member
Definitions
- This invention relates to a peristaltic pump for conveying a fluid conveying medium through a hose, comprising a saddle with a bow-like shaped saddle inner surface and a rotatably mounted in the saddle about a rotation axis arranged rotor with a plurality of angularly distributed about the axis of rotation, the saddle inner surface at least temporarily opposite Tube squeezing means for externally loading a hose to be arranged between the caliper inner surface and the rotor, such that upon rotation of the rotor a respective local constriction of the passage cross-section of the tube caused by external pressurization of the tube by a squeezing means is movable along the saddle inner surface with the respective squeezing means; to promote the fluid in the tube, the saddle along the saddle inner surface in the order mentioned an immersion area along the saddle inner surface of vorz 30 °, a sealing area over an angular range of the saddle inner surface, which is at least as large as the distance between two Schlauchquetschstoffn
- the squeezing means may close the tube located in a gap between the rotor and the interior of a saddle. By advancing the closure point, the fluid is conveyed. In the process, a tube-squeezing agent enters the tube in an immersion area until it eventually closes it increasingly in the transition to the sealing area. The closure produced in the sealing area is displaced along the hose with the rotor and the hose squeezing agent, which results in the conveying effect of the hose pump.
- the length of the sealing region extends over at least a portion of the tube, which corresponds to the distance of two successive Schlauchquetschstoffn along the conveyor track. From the transition of the sealing area in the discharge area on the outlet side of the peristaltic pump, the closure point is opened in the tube by the opened Schlauchquetschstoff emerges from the hose and the closure opens again. This process increases the internal volume of the
- DE 196 1 1 637 B4 proposes to increase the angular velocity of the rotor while a squeezing means emerges from the tube so as to compensate for the suck-back effect by the widening tube.
- an angle encoder is connected to the rotor, with the result of which the speed changes of the rotor are controlled angle-dependent.
- WO 2009/095358 proposes a further possibility of compensation for the pulsation effects resulting from the expanding tube. The hose is then moved along a satellite guided inside the inner surface, which has a non-constant radius.
- hose squeezing means In order for the hose squeezing means to be able to keep the hose closed over the inner surface of the saddle, these are resiliently biased so that they can bridge a certain change in the distance between the inner surface of the saddle and the axis of rotation of the rotor. When doing so the
- Object of the present invention is to overcome the disadvantages of the prior art and to find a mechanically inexpensive and reliable solution to avoid pulsation effects, which can be used as possible even at high production speeds.
- the invention in a first aspect is a Peristaltikpum- pe, wherein the Schlauchquetschstoff such angularly spaced on the rotor are provided and the exchange region extends over such an angular range about the axis of rotation of the rotor, that in each case Can be at the rotation of the rotor in the immersion region, the saddle inner surface in the exchange region extends so that the radial distance between the saddle inner surface and the axis of rotation of the rotor along the trajectory of the Schlauchquetschstoff varies such that a modulation of the application of the hose through the Hose squeezing when passing through the immersion region is carried out in such a way that the inner volume of the hose increases at least approximately uniformly at the point of being acted upon by the Schlauchquetschstoff.
- An advantage of this solution is that a mechanically simple structure can be selected and still a homogenization of the pulsation effects is possible.
- the pulsation is compensated when the inner volume of the hose at a hose squeeze increases evenly during its expulsion. This is possible when the rate of dipping is chosen so that the volume increases evenly.
- the volume of a squeezed hose does not increase linearly with the path of a hose squeeze out of the hose, but increases sharply at the beginning of the discharge and less with increasing bucket. Accordingly, a variation of the radial distance between the saddle inner surface and the axis of rotation of the rotor, which takes this into account, causes the squeezed-in tube to be very slowly dipped out of the tube.
- the squeezing means are about the axis of rotation of the rotor at equal angular intervals to each other distributed and the length of the immersion region corresponds to the angular distance between two Schlauchquetschstoffn in the rotor.
- another subsequent squeezing agent upon complete release of the tube by a squeezable tube, another subsequent squeezing agent enters the replacement area and begins desiccation in which the volume flow discharged from the pump is constant. Since this process repeated continuously and preferably seamlessly interlocking results in a constant speed of the rotor, a uniform volume flow from the pump.
- a course of the radial distance between the saddle inner surface and the rotational axis of the rotor without modulation follows along at least parts of the exchange region of a linear function, a polynomial or an exponential function.
- a squeezing agent continuously dives out of the tube, with a polynomial or exponential function causing part of the aforementioned compensation for pulsation effects. Remaining errors can be compensated by additional modulation.
- the radial distance between the saddle inner surface and the axis of rotation of the rotor along the trajectory of the squeezing means over a uniform increase in the radial distance follows modulation along the exchange region such that the modulation results in an uneven increase in the internal volume of the exchange tube Hose with a radial distance between the saddle inner surface and the axis of rotation of the rotor by appropriate weaker or stronger exposure to the hose squeezing agent compensates.
- the modulation of the radial distance between the saddle inner surface and the axis of rotation of the rotor is determined by measurement on a similar peristaltic pump without modulation of the inner surface of the saddle such that pulsation effects measured on the peristaltic pump without modulation are compensated by counteracting modulation ,
- the equalization can be optimized by measuring on a not yet finally optimized pump, a residual pulsation and the measurement result for the compensation by the Shape of the saddle inner surface is used.
- the way in which a squeeze out of the tube is exchanged is related to the increase in volume in the tube in order to arrive at a suitable geometry of a saddle inner surface from the measured pulsation effects.
- a peristaltic pump according to claim 1 in which the squeezing means are angularly spaced on the rotor and the replacement region extends over such an angular range about the axis of rotation of the rotor, that at least two successive Schlauchquetschstoff at may be the rotation of the rotor in the replacement region, wherein the saddle inner surface in the exchange region extends such that the radial distance between the saddle inner surface and the axis of rotation of the rotor along the trajectory of the Schlauchquetschstoff varies such that a modulation of the application of the hose through the Schlauchquetschstoff when passing through the immersion region in such a way that pulsation effects in the fluid due to the Change of the application of the hose by one of the two exchange area each passing through together Schlauchquetschstoffs, are at least partially compensated by a change in the application of the hose through the other of the two exchange area each passing through together Schlauchquetschstoff when passing through the Austauchrios
- pulsations may occur by uniformly evacuating tubing squeezing means from the tubing, but having an uneven effect on the increase in the internal volume of the tubing. This results in the above-explained suction effect and an uneven volume flow from the peristaltic pump.
- the compensation of such by pulsation effects non-uniform volume flow through a second Schlauchquetschstoff may be simpler than a direct equalization of the exiting flow, especially if accurate compensation for small replacement paths would be respected to compensate. Since always two Schlauchquetschstoff must be immersed in the hose to realize this aspect of the invention, a corresponding looping of the rotor of the peristaltic pump is required.
- the saddle A surface of a preset portion of the immersion region, which is traversed by one of the two successive Schlauchquetschstoff, wherein the radial distance between the Sattelinnenions and the axis of rotation of the rotor along the default section continuously increases, and a compensation section, which simultaneously with the passage of the default section with the one Perforated by the other of the successive Schlauchquetschstoffn and having a modulation of the radial distance between the saddle inner surface and the axis of rotation of the rotor along the Kompensationsabitess, wherein by means of the modulation pulsation effects in the fluid due to the change of the application of the hose through the
- the compensation section is preferably designed to then cause compression of the hose through which a corresponding amount of delivery fluid is provided so as to be exposed to the exterior of the hose Pump has no pulsation effect.
- the default section is arranged in the replacement area such that it passes through the squeezing means before passing through the compensation area. Since, at least for tubes of circular cross-section, the increase in internal volume is greatest from the fully squeezed state, the strongest pulsation is generated when a squeeze means reaches the exchange area and begins to open the tube. In order to make a compensation, a very precise control of the exchange process would be required. It is therefore easier to provide a simple, even evacuation and the compensation section in To arrange passage direction behind the first traversed default section.
- a delivery section which is encompassed by the sealing region and has a constant radial distance between the axis of rotation of the rotor and the inner surface of the saddle, the default section and the compensation section, are dimensioned so that they are simultaneously and uninterruptedly passed through by respective squeezing means upon rotation of the rotor, in each case a tube squeezing means in each of said sections can act on the tube and that the conveyor section, the default section and the compensation section extend over equal angular intervals about the axis of rotation of the rotor.
- a course of the radial distance between the saddle inner surface and the rotational axis of the rotor without modulation follows along at least parts of the exchange region of a linear function, a polynomial or an exponential function.
- Such courses are easy to calculate, corresponding saddles easy to produce and provide a reproducible exchange process of Schlauchquetschstoffs from the hose.
- the unevenness of the volumetric flow remaining in spite of a possibly already existing compensation means of such a course can be compensated by a corresponding compensation area for a second squeezing means in the exchange area.
- the modulation of the radial distance between the inner surface of the saddle and the axis of rotation of the rotor along the compensation section is at least approximately sinusoidal.
- a distance enlargement half-wave of the at least approximately sinusoidal modulation due to which the radial distance between the inner surface of the saddle and the axis of rotation of the rotor increases during the passage of a squeezing agent through the compensation section, is present in relation to passing through a squeezing means a distance reduction half-wave, due to which the radial distance between the saddle inner surface and the axis of rotation of the rotor decreases during the passage of a tube squeezing agent through the compensation section, arranged.
- first is the distance magnification half-wave and then the half-distance reduction half-wave, the two half-waves representing the compensation section.
- This arrangement is particularly suitable for tubes of circular cross section and uniform increase in the radial distance between the inner surface of the saddle and the axis of rotation of the rotor in the default section.
- the terms distance reduction and distance increase with respect to the half-waves respectively refer to an average value of the at least approximated sine function, wherein the mean value may be superposed, for example, on a linear function.
- the distance reduction half-shaft compresses the tube in the compensation section to provide delivery medium which can be accommodated by the large increase in internal volume at the squeezing means in the default section, thus reducing pulsation towards the exterior of the pump.
- the shape of the two half-waves is adapted to a type of hose having a certain inner diameter, in particular with a circular cross-section, and is optimally suitable for this.
- the modulation of the radial distance between the saddle inner surface and the axis of rotation of the rotor along the compensation section is determined by measurement on a similar peristaltic pump without modulation of the compensation section such that pulsation effects measured in the conveyed medium at the peristaltic pump without modulation of the compensation section be compensated by counteracting modulation in the compensation section.
- the pulsation can be optimally corrected, since the compensation is based on actually measured values.
- a measurement can be realized, for example, by weighing the conveyed pumped medium. Such a measurement is preferably repeated several times and the measured values arithmetically averaged over individual angular positions of the rotor.
- a relationship between fluctuations in the volume flow and the shape of the inner surface of the saddle is preferably taken into account, and in particular the relationship between the degree of squeezing of the tube and the associated inner volume of the tube.
- a linear increase in the radial distance between the caliper inner surface and the axis of rotation of the rotor is effected.
- the rotor has four hose squeezing means, in particular in the form of rollers.
- the angular size of the immersion region is preferably 180 °. This is also preferred for all other embodiments relating to this aspect of the invention.
- a compensation according to this embodiment is made individually for different tube diameters and in each case correspondingly compensated saddles are realized which are respectively suitable for a corresponding tube.
- the saddle is easily interchangeable in the peristaltic pump, so that the pump easily adaptable to another type of hose.
- the peristaltic pump according to the preamble cited above is further developed in that a pulsation sensor is provided in the pump, which detects pulsation effects in the conveying medium, and counteracts the pulsation effects by varying a rotational speed of the rotor.
- a pulsation sensor is provided in the pump, which detects pulsation effects in the conveying medium, and counteracts the pulsation effects by varying a rotational speed of the rotor.
- it has been proposed to counteract the pulsation effects by changing the rotational speed of the rotor but these changes are based on a fixed scheme in which each angular position of the rotor is assigned a specific speed or a drive current or a drive frequency. This requires an angle sensor.
- a control is to be realized, which responds to actual pulsation effects occurring and corrects them via speed change of the rotor.
- a volume flow measurement or a pressure measurement in the delivery fluid may be considered as the pulsation sensor, or external deformations such as the diameter or expansions on the tube may be measured in order to obtain a measure of the pulsation effects.
- other known in the art solutions for determining the pulsations are conceivable.
- a peristaltic pump according to the preamble cited above is proposed, which is set up to compensate pulsation effects in the delivery fluid when metering a quantity of a delivery fluid in that a delivery end position of the rotor at the conclusion of the Dosing by means of a control device against an uncompensated conveyor end position forward or moved back.
- a control device against an uncompensated conveyor end position forward or moved back.
- the extent of the forward or backward transfer can be calculated by means of the known volume flow from the pump.
- dosing speed profiles which include a launch ramp in which the rotor is accelerated, followed by a phase at constant speed and then followed by a stop ramp in which the rotor is decelerated from constant speed to a stop.
- the compensation can be achieved by changing the slope of the start or stop ramp or prolonging or shortening the phase at a constant speed, which causes a displacement of the conveyor end position. This corresponds to a compensation by the conveying path of the rotor.
- the target position for the next dosage is calculated after completion of the previous dosage.
- the last delivery end position and the effect of the pulsation effect associated with this position can be taken into account.
- a change in the volume flow from the pump can be integrated during the entire dosing process and the result of this integration compensated.
- the calculation of the compensation amount and the corresponding installation of the delivery end position can be carried out depending on the type of hose used.
- a control means determines an amount and a direction of laying the fertilendstel development of the rotor for compensation at least approximately by means of a sine function, which depends on the uncompensated sauceend ein. It is thus assumed that an idealized uniform flow rate, calculated a theoretical end conveyor position and then made a compensation by means of a sine function. The value of the sine function used for the compensation is determined from the theoretical end of delivery position.
- the sine function is in its phase position, amplitude and frequency as well as adjustable in their offset. To adjust the phase position, an angle offset can be added to the angle of the uncompensated conveyor end position. The amplitude can be adjusted by multiplying the result.
- the frequency of the sine function can be adjusted by a factor that multiplies the angle of the uncompensated conveyor end position.
- An offset can be adjusted by adding or subtracting an offset value to the result of the aforementioned operations.
- the set values mentioned may depend on the type of hose, the type of saddle and the hose over-pressure. By over-squeezing the hose, it is meant that the hose is further compressed beyond the extent of compression with the hose closed. Corresponding values can be stored in the control device and can be called up.
- a peristaltic pump with the features mentioned is proposed, which is further developed in that the Schlauchquetschstoff are angularly distributed uniformly about the axis of rotation of the rotor, and the control means controls the pump such that the rotor for a dosage a winningend ein occupies an angular distance to a preceding conveyor end position, wherein the angular distance is the angle between two adjacent
- Percussion on the rotor or a multiple thereof corresponds. Pulsation effects typically occur in a particular pattern during a passage of a squeezed tube through the exchange area and are repeated as the subsequent squeezed-through means pass through. Thus, when always stopped in the same angular position of a squeezed tube during a pass through the immersion area (end of delivery), results in each case a constant volume, which has been promoted from the last winningend ein in the same angular position of a previous Schlauchquetschstoffs to the current end conveyor position. A special compensation of errors in the flow rate can thus be omitted.
- the disadvantage is that only discrete flow rates can be promoted. It is therefore preferred, especially to use thin tubes, so that the discretization is as fine as possible.
- the discretization can be refined by choosing a high number of squeezing means on the rotor.
- Said embodiment can be combined with features of the other embodiment, in particular if synergistic advantages arise.
- three, four, five or six rollers are provided as tube squeezing means on the rotor.
- a hose is chosen so thin that the angle of rotation for the dosage to be delivered is maximum. The larger this angle of rotation, the more accurate the dosage will be.
- a conveyed quantity can be weighed with a balance. Typically, a weighing is performed after each change of Win angle of the rotor by 1 ° to determine a conveying characteristic.
- corresponding peristaltic pumps are designed for the use of exactly one hose.
- Y-pieces which are required according to the prior art as a branching for several inserted between the rotor and saddle tubes are omitted.
- a symmetrical construction of the pump is possible, i. that the rotor of the pump can be operated clockwise or anti-clockwise.
- the saddle inner surface is preferably provided around a center with two Austauch Schemeen, each of which acts in each direction of rotation as an immersion area and a submerged area.
- the immersion region is in a direction opposite to the direction of passage through the exchange area of
- the replaceable areas are preferably symmetrical about the center. Then the sealing area preferably extends over the middle.
- Another advantage of the pump with a hose is that the accuracy of the flow rate can not be affected by different hose lengths of several hoses. Last but not least, with a pump with only one hose, less abrasion is generated, which is absorbed into the Can mix mediator.
- the distances of the tube squeezing means in the rotor to a rotational axis of the rotor are constant. This is applicable to all embodiments and all aspects of this invention.
- Schlauchquetschstoff in the rotor results in a particularly robust and low-wear embodiment of the peristaltic pump.
- the saddle of the peristaltic pump is made divisible into two sections.
- the Applicant reserves the right to claim this embodiment and / or its developments independently.
- This aspect has the purpose that the sections of the saddle can be removed from each other, whereby each belonging to a subsection sections of the saddle inner surface of one or more Schlauchquetschstoffn can remove. Thereby, a closure of the tube can be canceled by the immersion of the Schlauchquetschstoff in the tube, so that an unhindered passage of fluid through the hose is possible.
- the conveying effect of the peristaltic pump can be suspended and / or the tube with a rinsing fluid, such as a purge gas, rinsed.
- a rinsing fluid such as a purge gas
- the opening of the saddle can be a safety function for the pump, should take place incorrectly unwanted promotion.
- Another advantage is that it is much easier to insert the tube into the peristaltic pump when the saddle is open.
- the opening of the saddle represents a considerable facilitation and acceleration of the process of inserting hoses into the pumps.
- a linear guide along which the two sections can slide relative to each other.
- Particularly preferred in one embodiment is the use of a pivot axis about which the sections of the saddle are pivotable relative to each other.
- the pivot axis is preferably in a parting plane extending through the saddle and dividing it into the two sections.
- the pivot axis is located at the point in the parting plane, which has an at least almost maximum distance to the rotor of the peristaltic pump. In this way, when pivoting about the pivot axis the greatest possible distance of the sections are achieved from each other.
- the sections can be preferably so far apart that the Schlauchquetschstoff completely escape from the hose to fully release its inner cross-section.
- the rotor is brought to such an angular position that the distance between the two closest to the pivot axis arranged Schlauchquetschstoffn and the
- Swivel axis is the same size. For example, achieved that none of
- the pivot axis is the Eing. Exit area of the hose in the saddle opposite. This has the advantage that the hose in the opening point can be inserted particularly easily between the rotor and the saddle inner surface.
- the pivoting or a conceivable linearly movable opening mechanism has such an accuracy that the position of the sections relative to one another in the closed state of the saddle can be reproduced sufficiently accurately, preferably with an accuracy of less than 5/100 mm or more particularly preferably less than 2/100 mm.
- the path deviation through the separation point in the closed position of the saddle is also less than 5/100 mm, more preferably less than 2/100 mm.
- the saddle is provided with a fixing device which holds it in the closed position such that during operation at least one of the aforementioned specifications of accuracy and reproducibility is maintained.
- the saddle can be automatically separated and closed. This is true regardless of the type of movement mechanism for separating.
- an independent of human intervention and possibly also rapid exposure of the conveying effect of the pump and a release of the tube cross-section can be effected.
- the tube can thus be automatically rinsed when first the sections of the saddle are opened, then a flushing fluid is pumped through the tube and then the sections of the saddle are closed again to allow further promotion with the pump.
- a peristaltic pump according to any of the above-described aspects for metering a delivery fluid. Since the peristaltic pumps according to the aforementioned aspects suppress pulsation effects in the conveying medium, a particularly good dosing accuracy results.
- Fig. 1 is a perspective view of a peristaltic pump with a Hose and high wrap angle
- FIG. 2 shows a perspective view of another peristaltic pump with a hose and a lower wrap angle
- FIG. 3 shows a diagram of a course of pulsation effects over a complete revolution of a rotor
- FIG. 4 shows a diagram with a superposed representation of pulsation effects from several periods of the pulsation effects
- FIG. 5 is a graph showing a correction shape for a saddle inner surface calculated from the pulsation in a correction section
- Fig. 6 is a diagram showing a course of the distance between the
- FIG. 7 shows a schematic perspective illustration of an embodiment of the peristaltic pump with divisible caliper
- FIG. 7 shows the peristaltic pump from FIG. 7 in the same perspective view, but without the view of the peristaltic pump covering the peristaltic pump of the peristaltic pump, FIG.
- Hose from a peristaltic pump as shown in Fig. 9a - 9c.
- Fig. 1 shows a perspective view of a peristaltic pump 1 with a saddle 2, in whose interior a rotor 3 is arranged.
- a hose 4 is arranged in a gap between a saddle inner surface 5 and a peripheral surface of the rotor 3.
- the Schlauchquetschstoff 6 are designed as rollers, which are each rotatable about an axis 7 of the rotor. The Schlauchquetschstoff 6 engage in the tube 4 and compress this, so that he before a
- the Schlauchquetschstoff 6 is at least temporarily closed.
- the tube 4 is fixedly arranged in the saddle 2.
- the tube squeezing 6 run along the tube 4 and compress it in front of the saddle inner surface 5.
- the peristaltic pump 1 shown has a wrap angle of almost 360 °, wherein the emerging from the peristaltic pump 1 ends of the tube 4 each other in or little before cross the peristaltic pump 1.
- the rotor 3 is rotatable about a theoretical axis of rotation 8 passing through the center thereof.
- the saddle inner surface 5 is shaped such that its distance from the theoretical axis of rotation 8 of the rotor along the course of the tube 4 in front of the sattelin nenthesis 5 is not constant.
- the rotor 3 rotates in the direction of the arrow 9.
- the saddle inner surface 5 is subdivided into an immersion region 10, a sealing region 11 and an exchange region 12, the replacement region 12 following the sealing region 11 and the immersion region 10 in the rotational direction 9.
- the gap between the rotor 3 and the saddle inner surface 5 narrows in the direction of rotation 9.
- the immersion region extends over approximately 30 ° to 40 °, but not over more than 90 ° of the inner surface of the saddle.
- the immersion region 10 merges into the sealing region 11.
- the gap has a substantially constant width, which is low enough to close the tube 4.
- the sealing area 1 1 goes to the over- passage point 15 in the exchange area 12 via.
- Schlauchquetschstoff 6 again in the immersion region 10, where it strongly compresses the other end of the tube 4 until it closes the tube 4 in the sealing region 1 1 and conveyed therein conveying fluid.
- a squeezed tube 6 of the immersion region 10 in the sealing region 1 1 simultaneously closes a second Schlauchquetschstoff 6 the tube 4 within the sealing region 1 1 to ensure that no interruption of the promotion takes place in the transition.
- the second Schlauchquetschstoff 6 then begins with the expulsion from the tube 4.
- four Schlauchquetschstoff 6 are provided.
- the angle of the immersion region 12 of the saddle inner surface 5 is in this case about 180 °, while the sealing region occupies at least 90 ° and the immersion region 10 occupies about 30 ° of the saddle inner surface 5.
- the exchange area 12 are two Schlauchquetschstoff 6.
- the sealing region 1 1 is at least one Schlauchquetschstoff. 6
- FIG. 2 shows a perspective view of another peristaltic pump 1, which substantially corresponds to the peristaltic pump 1 shown in FIG. Identical features are designated by the same reference numerals.
- the ends of the tube 4 of the peristaltic pump 1 shown in FIG. 2 do not cross inside or just before the pump. This results in a lower wrap angle.
- the transition point 15 between the sealing region 11 and the immersion region 12 is arranged so that the immersion region 12 further comprises approximately 180 ° of the saddle inner surface 5.
- the immersion region 10 and optionally the sealing region 11, on the other hand, each extend over a smaller angular range of the inner surface of the saddle, wherein the sealing range 1 1 not less than 90 ° spans.
- a hose guide portion 13 by means of which the ends of the hose 4 are defined from the saddle 2 feasible.
- FIG. 3 shows a diagram of a pulsation effect of a volume flow from a peristaltic pump according to the prior art with increasing linearly over the rotational angle of the rotor escaping the Schlauchquetschstoff from the hose.
- the size of the volume flow is removed, while the angle of the rotor 3 is plotted on the abscissa.
- the course 20 is shown by a rotation of the rotor 3 from 0 to 360 °.
- Corresponding to the four peristaltic pumping means 6 of the peristaltic pump 1 four approximately sinusoidal pulsations in the course 20 result.
- the area shown repeats itself for further rotations of the rotor 3.
- FIG. 4 the individual pulsations of the profile 20 from FIG. 3 are shown superimposed in a diagram.
- the size of the volume flow is removed, while on the ordinate an angle range of 0 to 90 ° in a rotation of the rotor 3 of a peristaltic pump with linear over the rotation angle of the rotor increasing immersion of Schlauchquetschstoff is removed from the hose, in which Radius of the saddle in the exchange area 12 increases linearly.
- the rotor 3 of this pump has four Schlauchquetschstoff.
- the illustrated curve 21 is formed from a cloud of points, which results by corresponding displacement and superimposition of the pulsations in an angular range of 90 °.
- This data set forms a starting basis for determining a modulation for the surface shape of the saddle inner surface 5 for compensating the pulsations in the progressions 20 and 21, respectively.
- the angular range shown would be smaller, since a larger proportion of the saddle inner surface is required for the sealing area, namely at least 120 °.
- the course of the volume flow arising in such a pump would be over the smaller angular range of the replacement region 12 similar to a compressed version of the illustrated course over 90 °.
- FIG. 5 shows the curve 22 of a modulation for the immersion region 12 of the saddle inner surface 5 in comparison to a curve 23 of the saddle inner surface without modulation.
- the distance between the saddle inner surface and the axis of rotation 8 of the rotor 3 over a rotational angle of the rotor 3 from 0 to 90 ° in the exchange region 12 for a variant with four Schlauchquetschstoffn 6 is shown.
- the immersion region 12 is divided into two halves at an angle of 90 °.
- the immersion region 12 would be smaller, since the sealing region 1 1 alone claimed at least 120 °.
- a rotor with four squeezing agents is considered.
- the modulated course 22 initially leads, due to the increased distance from the center of rotation of the rotor in a first half-wave 27, to an increased increase in the inner volume of the hose and corresponding intake of the conveying medium.
- the positive half-wave 27 is in a negative half-wave 28, which leads to less volume increase compared to a continuous emersing of the Schlauchquetschstoffs 6 from the tube 4.
- the first further open hose is even more compressed.
- the second half of the immersion region 12 is shown, which forms a compensation section 26 and compensates for pulsation effects from the predefined section 25 of the exchange region 12 by a modulation 22.
- an average value is first formed from the pulsations superimposed in FIG. 4.
- the values thus obtained are then converted to the modulation 22 taking into account a function which sets the distance between the saddle inner surface 5 and the rotational axis 8 of the rotor 3 in relation to a volume flow change.
- a function which sets the distance between the saddle inner surface 5 and the rotational axis 8 of the rotor 3 in relation to a volume flow change.
- a conceivable one The way to do this is also to set up a sine function 27, 28 and adjust its frequency, phase position, amplitude and offset accordingly.
- a free waveform that allows for the best possible compensation can be selected.
- FIG. 6 shows a diagram with an ordinate on which the distance of the saddle inner surface 5 from the axis of rotation 8 of the rotor 3 over an angle range from 0 to 180 ° is shown.
- the distance between the saddle inner surface 5 and the rotational axis 8 of the rotor 3 increases linearly.
- the linear increase in the distance between the saddle inner surface 5 and the axis of rotation 8 of the rotor 3 is superimposed on a modulation 22 which at least minimizes the pulsation effects from the presetting area 25 partially compensated.
- the modulation 22 corresponds to the modulation 22 shown in FIG. 5 and is obtained in the same way.
- Fig. 7 shows an embodiment of a peristaltic pump, which has independent significance and whose independent use is reserved.
- the saddle 2 can be subdivided into two sections 2a and 2b, wherein the sections 2a and 2b are arranged pivotable about a pivot axis 30. Swinging the sections 2a and 2b out of a conveying position results in the saddles being internally flattened. che in two sections 5a and 5b separates, which have a larger portion to each other in the swung-open state, as in the closed state.
- the portions of the saddle inner surface 5a and 5b respectively separate from the squeeze means 6, so that the tube 4 between the squeezing means 6 and the saddle inner surface portions 5a and 5b is no longer clamped such that the tube is completely closed.
- the sections 5a and 5b by releasing the flow through the hose 4, it is possible to purge the hose, for example with a purge gas.
- the sections are 5a and 5b in an opening Stel development so far apart that the Schlauchquetschstoff 6 no longer press into the hose and thus the full hose cross-section is released. The tube can then be rinsed particularly well, especially with a purge gas passed through.
- a rotation of the rotor is thus not required for rinsing.
- the locations on the sections 2a and 2b, which are the furthest away from each other when pivoting the sections 5a and 5b, are preferably at the exit point of the tube 4 from the saddle 2.
- the pivot axis 30 of the exit point 31 is preferably opposite.
- an inlet region, a sealing region and an outlet region of the saddle inner surface are designed as in one of the embodiments described above in this patent application.
- the peristaltic pump is adapted to the rotor 3 is brought when opening the saddle in a position in which the
- the Schlauchquetschstoff 6 of the pivot axis 30 have an at least approximately maximum distance. In this way it can be achieved that the small opening effect of the sections 5a and 5b in the vicinity of the pivot axis 30 does not cause one of the squeezing means does not dive, little or not completely out of the tube 4.
- the tube squeezing means 6 in this position have preferential has an angle to the pivot axis 30, which corresponds to half the angle between two Schlauchquetschstoffn 6 on the rotor 3.
- FIG. 8 shows the penstal pump from FIG. 7, with the difference that the rotor 3 is not shown.
- the Schlauchquetschstoff 6 are each designed as a role.
- the Schlauchquetschstoff 6 are each mounted around a fixed axis of rotation 3 in the rotor 7.
- the peristaltic pump is shown in the open state, is shown schematically how the Schlauchquetschstoff 6 dip into the tube 4.
- the inherent rigidity of the hose 4 would result in the hose being released from the engagement of the hose squeezing means 6.
- the peristaltic pump 1 shown in FIGS. 9a-9c and 10 is of the type shown in FIG.
- the pump according to FIGS. 9a-9c and 10 has a Einfädelungsausnaturalung 40 in the upper cover portion 42 of the rotor 3.
- the Einfädelungsausnaturalung 40 is preferably so large that it can accommodate the hose cross-section of the hose 4.
- the Einfädelungsausnaturalung 40 is brought by rotation of the rotor 3 in alignment with the hose insertion passage 43. Thereafter, a leading end portion 44 is placed in the hose insertion channel 43 and angled in the region of Einfädelungsausnaturalung 40 in the manner shown in Fig.
- Fig. 9a shows a snapshot on the way there.
- the tube 4 is already fully threaded so that it is in its operating position between the saddle In nenization 15 and the peripheral surface of the rotor 3 in the area below the Cover part 42 of the rotor 3 is located.
- the cover part 42 projects radially outward beyond the said peripheral surface of the rotor 3, so that the
- Hose 4 can not fall in the axial direction of the rotor 3 from the pump 1.
- the aspect of providing a radially outer Einfadelungsausinstituung of the rotor can also be interesting in other peristaltic pumps than those considered here and allow a simplified threading of the hose.
- this aspect may independently of the embodiment of the saddle of the peristaltic pump considered here have independent inventive significance in peristaltic pumps in general.
- FIG. 10 shows a snapshot when the tube 4 is being unthreaded.
- the trailing end section 47 of the tube is bent up so that it is received in the threading recess 40.
- the rotor 3 can be rotated in the direction of arrow 9 while the tube 4 are pushed out of the execution channel 46 until finally the trailing end 47 is released from the Einfädelungsaus predominantlyung 40 and the hose can be removed from the total peristaltic pump 1.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013210548.7A DE102013210548A1 (de) | 2013-06-06 | 2013-06-06 | Peristaltikpumpe mit verringerter Pulsation und Verwendung der Peristaltikpumpe |
PCT/EP2014/061864 WO2014195475A2 (de) | 2013-06-06 | 2014-06-06 | Peristaltikpumpe mit verringerter pulsation und verwendung der peristaltikpumpe |
Publications (2)
Publication Number | Publication Date |
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EP3004645A2 true EP3004645A2 (de) | 2016-04-13 |
EP3004645B1 EP3004645B1 (de) | 2017-07-12 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP14728970.6A Active EP3004645B1 (de) | 2013-06-06 | 2014-06-06 | Peristaltikpumpe mit verringerter pulsation und verwendung der peristaltikpumpe |
Country Status (7)
Country | Link |
---|---|
US (1) | US10465673B2 (de) |
EP (1) | EP3004645B1 (de) |
JP (1) | JP6635915B2 (de) |
CN (1) | CN105492771B (de) |
DE (1) | DE102013210548A1 (de) |
ES (1) | ES2634994T3 (de) |
WO (1) | WO2014195475A2 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013210548A1 (de) | 2013-06-06 | 2014-12-11 | Bausch + Ströbel Maschinenfabrik Ilshofen GmbH + Co. KG | Peristaltikpumpe mit verringerter Pulsation und Verwendung der Peristaltikpumpe |
JP6790411B2 (ja) * | 2015-03-31 | 2020-11-25 | ブラザー工業株式会社 | チューブポンプ及びそれを備える印刷装置 |
IT201700005714A1 (it) * | 2017-01-19 | 2018-07-19 | Ima Spa | Metodo di utilizzo e controllo di una pompa peristaltica e pompa peristaltica utilizzante tale metodo. |
CN107061242A (zh) * | 2017-05-09 | 2017-08-18 | 马鞍山新康达磁业有限公司 | 一种高性能金属软磁铁氧体生产用砂磨机循环泵 |
CN107503920B (zh) * | 2017-09-21 | 2024-03-22 | 合肥华运机械制造有限公司 | 多工位软管泵 |
CN108105074B (zh) * | 2017-11-27 | 2023-09-12 | 中国科学院苏州生物医学工程技术研究所 | 一种蠕动泵分流控制系统以及控制方法 |
GB2572402B (en) * | 2018-03-29 | 2020-06-17 | Hodges & Drake Design Ltd | A pumping apparatus with first and second peristaltic pumps |
CN109013487B (zh) * | 2018-07-31 | 2023-11-24 | 宜昌迪森智能科技有限公司 | 锯片工件及工作台清洗装置 |
JP7221522B2 (ja) | 2019-02-15 | 2023-02-14 | サーパス工業株式会社 | チューブポンプシステムおよびその制御方法 |
CN110792582B (zh) * | 2019-11-06 | 2022-03-18 | 刘国裕 | 一种用于低脉冲场景的蠕动泵 |
JP7480982B2 (ja) * | 2020-01-31 | 2024-05-10 | サーパス工業株式会社 | チューブポンプ |
JP7480988B2 (ja) | 2020-05-26 | 2024-05-10 | サーパス工業株式会社 | チューブ保持部材およびチューブポンプ |
JP7461639B2 (ja) | 2020-05-26 | 2024-04-04 | サーパス工業株式会社 | チューブポンプシステム |
CN114483549A (zh) * | 2020-11-13 | 2022-05-13 | 广东博智林机器人有限公司 | 挤压泵及其灌浆方法、装置和存储介质 |
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DE100309C (de) | ||||
US2804023A (en) * | 1954-11-29 | 1957-08-27 | Mr Robot Inc | Pump |
US2909125A (en) * | 1956-01-16 | 1959-10-20 | Paul J Daniels | Liquid dispensers |
US2965041A (en) * | 1956-05-16 | 1960-12-20 | Clark Robert Edward David | Rotary pump apparatus |
US3756752A (en) * | 1971-12-20 | 1973-09-04 | G Stenner | Peristaltic pump |
DE2200595A1 (de) * | 1972-01-07 | 1973-07-12 | Vogt Winhold Dipl Berging | Schlauchpumpe |
DD100309A1 (de) * | 1972-11-27 | 1973-09-12 | ||
DE2452771A1 (de) | 1974-11-07 | 1976-05-13 | Hermann Dr Schollmeyer | Schlauchpumpe |
JPS5565539U (de) * | 1978-10-31 | 1980-05-06 | ||
US4518327A (en) * | 1981-11-25 | 1985-05-21 | Hackman Charles Henry | Rotary peristaltic pump |
DE3326786A1 (de) * | 1983-07-25 | 1985-02-14 | Fresenius AG, 6380 Bad Homburg | Pumpenbett fuer eine rollenpumpe |
US4673334A (en) * | 1984-05-25 | 1987-06-16 | Isco, Inc. | Peristaltic pump |
US4705464A (en) * | 1986-05-09 | 1987-11-10 | Surgidev Corporation | Medicine pump |
DE3726452A1 (de) * | 1987-08-08 | 1989-02-16 | Schael Wilfried | Schlauchpumpe fuer medizinische zwecke |
DD272036A1 (de) * | 1988-05-09 | 1989-09-27 | Karl Marx Stadt Tech Hochschul | Radialperistaltikschlauchpumpe |
JPH0272380U (de) * | 1988-11-17 | 1990-06-01 | ||
DE3940730A1 (de) * | 1989-12-09 | 1991-06-13 | Sartorius Gmbh | Peristaltische schlauchpumpe zum foerdern eines fluids |
JPH0544656A (ja) * | 1991-08-09 | 1993-02-23 | Tabai Espec Corp | チユービングポンプ |
US5230614A (en) * | 1992-06-03 | 1993-07-27 | Allergan, Inc. | Reduced pulsation tapered ramp pump head |
US5447417A (en) * | 1993-08-31 | 1995-09-05 | Valleylab Inc. | Self-adjusting pump head and safety manifold cartridge for a peristaltic pump |
DE19515532A1 (de) * | 1995-04-27 | 1996-10-31 | Volker Von Hertel | Verfahren und Schlauchpumpe zum Fördern eines Fluids |
DE19533432A1 (de) * | 1995-09-11 | 1997-03-13 | Volker Von Hertel | Verfahren zum Verringern der Förderratenabnahme einer Schlauchpumpe sowie Schlauchpumpe und Schlauch zum Durchführen des Verfahrens |
DE19611637B4 (de) | 1996-03-25 | 2005-08-11 | Möller Feinmechanik GmbH & Co. KG | Verfahren zum Betreiben einer Peristaltikpumpe und Peristaltikpumpe zur Durchführung des Verfahrens |
US6099272A (en) * | 1997-09-18 | 2000-08-08 | Fsi International | Peristaltic pump with flow control |
DE20109803U1 (de) * | 2001-06-12 | 2002-10-24 | Fresenius HemoCare GmbH, 61352 Bad Homburg | Pumpenbett für eine Rollenpumpe |
EP1869324B1 (de) * | 2005-04-07 | 2012-03-14 | Marion H. Bobo | Kopf für peristaltikpumpe |
NL2000058C2 (nl) * | 2006-04-21 | 2007-10-23 | Bredel Hose Pumps B V | Peristaltische pomp. |
DE102008002761A1 (de) | 2008-01-31 | 2009-08-06 | Fachhochschule Bielefeld | Schlauchpumpe zur Förderung von Fluiden |
DE102013210548A1 (de) | 2013-06-06 | 2014-12-11 | Bausch + Ströbel Maschinenfabrik Ilshofen GmbH + Co. KG | Peristaltikpumpe mit verringerter Pulsation und Verwendung der Peristaltikpumpe |
-
2013
- 2013-06-06 DE DE102013210548.7A patent/DE102013210548A1/de not_active Withdrawn
-
2014
- 2014-06-06 CN CN201480044137.5A patent/CN105492771B/zh active Active
- 2014-06-06 WO PCT/EP2014/061864 patent/WO2014195475A2/de active Application Filing
- 2014-06-06 US US14/895,988 patent/US10465673B2/en active Active
- 2014-06-06 JP JP2016517625A patent/JP6635915B2/ja active Active
- 2014-06-06 ES ES14728970.6T patent/ES2634994T3/es active Active
- 2014-06-06 EP EP14728970.6A patent/EP3004645B1/de active Active
Non-Patent Citations (1)
Title |
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See references of WO2014195475A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014195475A3 (de) | 2015-03-05 |
DE102013210548A1 (de) | 2014-12-11 |
CN105492771B (zh) | 2017-08-11 |
US20160123317A1 (en) | 2016-05-05 |
CN105492771A (zh) | 2016-04-13 |
ES2634994T3 (es) | 2017-10-02 |
US10465673B2 (en) | 2019-11-05 |
JP6635915B2 (ja) | 2020-01-29 |
JP2016520762A (ja) | 2016-07-14 |
EP3004645B1 (de) | 2017-07-12 |
WO2014195475A2 (de) | 2014-12-11 |
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