WO2022112183A1 - Pompe péristaltique - Google Patents

Pompe péristaltique Download PDF

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Publication number
WO2022112183A1
WO2022112183A1 PCT/EP2021/082526 EP2021082526W WO2022112183A1 WO 2022112183 A1 WO2022112183 A1 WO 2022112183A1 EP 2021082526 W EP2021082526 W EP 2021082526W WO 2022112183 A1 WO2022112183 A1 WO 2022112183A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
pressure
cross
pump
section
Prior art date
Application number
PCT/EP2021/082526
Other languages
German (de)
English (en)
Inventor
Erich Scheugenpflug
Original Assignee
ventUP GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ventUP GmbH filed Critical ventUP GmbH
Priority to JP2023530739A priority Critical patent/JP2023550140A/ja
Priority to EP21819740.8A priority patent/EP4251885A1/fr
Publication of WO2022112183A1 publication Critical patent/WO2022112183A1/fr
Priority to US18/200,499 priority patent/US20230287877A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • 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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • 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
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • 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
    • F04B43/0081—Special features systems, control, safety measures
    • 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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having 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
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10—Pumps having fluid drive
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing

Definitions

  • the invention relates to the transport of liquids or viscous substances in a transport line.
  • these substances which are required in electronics, the cosmetics industry or adhesive technology - can either be very sensitive and/or abrasive and/or adhesive, which makes handling even more difficult.
  • a typical problem is transporting such materials from a storage container such as a barrel, a cartridge or a pre-treatment unit, such as a mixer, to a consumer, for example a dosing unit for dispensing these substances in precisely specified, i.e. dosed, quantities
  • a storage container such as a barrel, a cartridge or a pre-treatment unit, such as a mixer
  • a dosing unit for dispensing these substances in precisely specified, i.e. dosed, quantities
  • the consumer must often have a certain minimum pressure, which should be constantly maintained during delivery.
  • membrane pumps were used in the past for transport in hose lines, in which an oscillatingly driven membrane allows the material to be conveyed in portions in a line to the consumer, but such membrane pumps are often not in their stroke volume accurate enough.
  • hose pumps are known in which the transport is carried out by regularly deforming an elastic hose - which is part of the line through which the material is guided - it causes problems to transport a material that is not subject to the ambient pressure, but only an extremely low residual pressure close to zero of a few millibars, which is always the case when the material has to be conveyed out of a processing device or a container that is kept under vacuum to avoid air pockets.
  • a cross-section variator is attached to the elastic hose and is able to reduce the cross-section of the hose and compress it, if necessary down to zero, i.e. to seal it, whereby the pressing point is usually moved along the hose and the material in the hose is pushed in front of the pressing point by means of the cross-section variator.
  • Typical cross-section variators include compactors in the form of non-deformable, rigid shoes or rollers which compress the hose transversely and then are moved longitudinally along the hose.
  • elastic press bodies are known, for example in the form of a pressure sleeve arranged over the entire circumference of the hose or a pressure pad lying against it only over a partial area of the circumference.
  • These elastic compacts are usually hollow and can be filled hydraulically or pneumatically, thereby compressing the hose.
  • the peristaltic pump has a pressure-tight housing around the hose in the pumping section, i.e. the area in which the pressing point is located or can move, preferably around the entire peristaltic pump hereabouts.
  • the hose can enter the housing via a pressure-tight inlet opening and a pressure-tight outlet opening and exit the housing again, and the housing has a pressure connection with which a desired pressure, in particular negative pressure, can be set in the housing, which is thus on the outer circumference of the hose prevails.
  • the controller which controls the entire peristaltic pump, and also the pressure inside the housing, should be designed in such a way that it is able to to control the pressure in the housing via the pressure connection, for example, so that it corresponds to the pressure inside the hose and/or to create a vacuum in the housing between the pressing processes of the hose pump compared to either the ambient pressure or also compared to the pressure inside the hose.
  • a peristaltic pump generally requires a partially elastic body that is open on both sides and can be flown through, which is referred to here as a hose, although the body does not have the typical appearance of a hose, i.e. neither a round cross section nor a smooth one must have a greater extent in the direction of flow than in the transverse direction. All elastic hollow bodies with two openings are to be understood by the term hose.
  • the elastic flow-through body can be designed in such a way that, after the end of the compression, it resumes its non-compressed initial state without external influence, whether due to the structure or material properties of its peripheral wall.
  • the peripheral wall can consist of a so-called memory material, which either always returns to its original shape or returns to its original shape under certain physical conditions.
  • the hose in order to reduce its cross-sectional area, the hose can be acted upon in a first direction transverse to its longitudinal direction, but in order to deform it back into its initial state, force can be applied in a second transverse direction, in particular perpendicular to the first transverse direction, and thereby the Recovery is favored or caused in the first place.
  • the application of force in the second, re-deforming transverse direction can be carried out by means of a press body which acts on the hose, in particular only periodically, or for example by means of a resilient element which bears against the hose, in particular permanently, on its outside or inside.
  • a compression spring arranged inside the hose for example a spiral spring, can apply force to the hose radially outwards, or else a spring acting on the outside of the hose.
  • Such resilient elements can also only be present in sections in the longitudinal direction of the hose.
  • the cross-section variator includes a rigid compression body that mechanically compresses the hose.
  • cross-sectional variators are also suitable that are not rigid but can change their shape and are in particular elastic pressed bodies, for example are themselves hollow bodies and change the internal pressure of at least one corresponding connection via corresponding connections can become.
  • Such a non-rigid, in particular elastic, pressed body can bear against the hose with part of its peripheral wall and when pressure is applied to the interior of such a cross-sectional variator, the peripheral wall of the cross-sectional variator can be pressed against the peripheral wall of the hose and compress it.
  • the pinch point with the reduced cross-sectional area can also be moved in the flow direction of the hose, in particular without the cross-section variator moving in this direction, simply because the point of greatest expansion of the cross-section variator is transverse to the hose in the longitudinal direction of the Hose, the direction of flow, can change.
  • the cross-section variator is able to compress the inner cross-section of the hose down to zero, so that the inner cross-section is closed and thus act as a check valve, it is called a pinch valve
  • the peristaltic pump according to the invention can also comprise several cross-section variators one behind the other in the direction of flow, which then preferably have to be drivable out of phase or have to be drivable in a specific temporal correlation to one another.
  • the interior of the compact can have several chambers in the direction of flow, in particular one behind the other, which expand one after the other transversely to the longitudinal axis of the hose and compress it, one after the other in the direction of flow, whereby the material in the hose is pushed forward in the direction of flow.
  • the individual chambers can be connected to one another, with throttling points between the chambers, and in particular there can be only one common compression pressure connection for the entire compression body.
  • the individual chambers can also not be connected to one another, ie they can be separate chambers that each have a separate compression pressure connection, which are then pressurized according to this progression sequence.
  • at least the first chamber in the flow direction is able to reduce the cross-sectional area of the tube to zero in order to avoid backflow of material into the tube.
  • a sequence of pinch valves can also be controlled in this way if the pieces of hose between them withstand the pressure that occurs therein when two adjacent pinch points are closed one after the other.
  • the hose pump preferably also includes a vacuum sensor for measuring the negative pressure in the housing around the hose in order to be able to control the variator drive or the vacuum pump for generating the negative pressure in the desired manner.
  • a heater can also be present, in particular with a temperature controller that heats the hose pump, i.e. either the interior of the housing and/or the hose itself, so that the material in the hose heats up and thus flows more easily and the effort required to operate the hose pump decreases.
  • the pressure present in the material can also be monitored by a pressure sensor, which can be arranged, for example, upstream and/or downstream of the pumping length region in which the cross-sectional area of the hose is changed.
  • Such a pressure sensor does not necessarily have to be connected to the material in the hose:
  • he can also measure the outer circumference or outer diameter of the hose and draw conclusions about the pressure prevailing inside if the elasticity of the hose is known at this point.
  • the pressure inside the elastic compact can be measured by a pressure sensor, and based on the pressure inside the elastic compact or equated to the pressure in the material inside the hose can be closed by the controller.
  • peristaltic pump Since such a peristaltic pump is simple and inexpensive to produce and, depending on the material of the peristaltic tube, also has a long service life, this is a possibly better solution than membrane pumps, also depending on the materials to be pumped.
  • the existing task is solved in that the hose pump is designed as described above is.
  • the housing of the peristaltic pump should be designed in such a way that that it can be subjected to the same negative pressure inside as the air space in the reservoir.
  • a check valve which can completely block a free cross-section of the hose, in particular a pinch valve, is preferably arranged between the reservoir and the cross-section variator, and the check valve can also be part of the hose pump.
  • two or more peristaltic pumps can be connected in parallel if either a controller is available that is able is to operate these peristaltic pumps out of phase, with two peristaltic pumps to drive them alternately and/or simply to drive the multiple peristaltic pumps by just one common pump drive, and the phase offset by the corresponding mechanical design of the common pump Drive is realized.
  • cross-section variators are present one behind the other in the direction of flow and are in contact with the same hose, these will be operated in different phases, in particular the individual cross-section variators will be activated one after the other in the direction of flow.
  • Figure 1a a mechanical hose pump
  • Figures 1b, c cross sections through the hose in the hose pump according to Figure 1a,
  • Figures 2a-f a first design of a pneumatic or hydraulic
  • Figures 3a, b a 2nd design of a pneumatic or hydraulic
  • FIGS. 5a-c cross sections at different points through the hose pump according to FIG. 4 in different functional positions
  • FIG. 6 a 3rd design of a pneumatic or hydraulic pump
  • Hose pump in longitudinal section along the hose
  • FIG. 7 a dispensing device with a storage container for viscous or liquid material and a hose pump according to the invention
  • FIG. 5 reveals the problem on which the invention is based:
  • the dispensing device 100 initially comprises a storage container 101, which is filled from a supply container (not shown), e.g serves:
  • a mixer can rotate in the storage container 101 and/or pumping can be carried out and/or thin-film degassing can be carried out or other treatment steps can be carried out.
  • the air space in the reservoir 101 is above the material with a negative pressure close to vacuum, from about 1 mbar to 50 mbar absolute pressure, generated by a vacuum pump 102, which removes the air sucks the air space of the reservoir 101 from.
  • the material M is removed from the reservoir, preferably at its deepest point, from an outlet opening 101a and fed via a connecting line 103 to a consumer 104, here a dosing device 104 for dispensing precisely dosed quantities of the material M via a discharge, for example - Nozzle 105. So that this—usually intermittent—discharge from the discharge nozzle 105 can take place at any time, the material M must always be in contact with the consumer 104 with a specific minimum pressure, while pressure fluctuations above the minimum pressure are acceptable.
  • this pressure is maintained by a hose pump 1 in the connecting line 103, in this case connected directly to the outlet opening 101a of the reservoir 1 instead of the membrane pumps or piston pumps otherwise present at this point, since hose Pumps are available as simply constructed and inexpensive standard parts that can be purchased separately.
  • the problem here is that with a conventional hose pump, the hose is compressed at one or more pressing points in terms of its cross section, and after this pressing force is removed, it deforms back to its original, mostly round, cross section on the one hand due to the restoring force of the elastic Material of the wall of the hose, but above all also because of the overpressure prevailing inside the hose in the material M conveyed in it.
  • the air space in the reservoir 101 is acted upon by a quasi-vacuum - hereinafter referred to simply as a vacuum - this also applies to the material M present below the air space and thus also to the material M in the connecting line 103. so that the peristaltic pump 1 lacks an essential parameter for the return from the compressed to the non-compressed cross-section of the peristaltic tube, which, however, is essential for the function of a peristaltic pump.
  • FIGS 1a - c show a hose pump 1 which is known per se and is only equipped with additives according to the invention:
  • a hose 2 made of an elastic material is guided in a U-shape in a plane running through a housing 5, the U-shape having the shape of a flow circle in the reversal area.
  • the U-shape In the center of this semicircular end of the U - viewed perpendicularly to the U-shaped plane U", in which the hose 2 lies, i.e.
  • FIG. 1a rotates a two-armed rotary lever 28, whose opposite, equal-length Flebelarme on End each have a press body 8, here in the form of a press roller 8 wear, which about a press roller axis 8 ', which is perpendicular to the U-shape plane U', on the rotary lever 28 is rotatably held.
  • the rotary lever 28 is also driven by a variator drive 4 and controlled by a controller 1 * of the hose pump 1 - which is an integral part of the controller 100 * of the spreading device can - clockwise in a certain direction of rotation R, here rotated.
  • the lengths of the lever arms of the rotary lever 28 and the diameter of the two press rollers 8 are measured in such a way that each of the press rollers 8 presses radially from the inside outwards against the hose 2 for a little more than half a turn and presses it in a radial direction direction of its cross-section 2", because on the radial outside of the U-shaped deflection area of the hose 2, the hose 2 presses against a mostly plate-shaped counter-holder 21 that extends over at least the semicircular deflection area of the hose 2, as in the figures 1b and 1c.
  • the pressing roller 8 moving along the tube 2 pushes the material M contained in the tube 2 in front of it and transports it in the direction of flow 10 along the tube 2.
  • the two ends of the hose 2 in the housing 5 are usually tightly connected to a flange-shaped inlet opening 5a on the one hand and outlet opening 5b on the other hand, and the material is thus pushed out of the outlet opening 5b.
  • the openings 5a, b are in turn connected to the housing 5 in a sealed manner.
  • the hose 2 resumes its original, unstressed cross-section, generally a circular cross-section immediately behind the pinch point S, as shown in FIG. 1b.
  • the interior 6 of the housing 5, which is tightly closed, has a vacuum connection 7, via which a vacuum can be generated inside the housing 5 by means of a vacuum pump 20, if necessary even a lower pressure than it is in Interior of the tube 2 prevails, so that one factor for preventing the rebound of the tube 2 is eliminated, namely a higher external pressure than the internal pressure with respect to the tube 2.
  • the vacuum connection 7 of the vacuum pump 1 is preferably connected via a vacuum line 106 to the same vacuum pump 102 that also applies a vacuum to the air space of the reservoir 101 .
  • a vacuum sensor 15 can also be present in the interior 6, which measures the pressure there, i.e. negative pressure, for control purposes and sends it to the controller 1 * . reports, which can then vary the assignment with negative pressure on the negative pressure connection 7.
  • one or more pressure sensors 19 a, b, c can be present in the interior 6 in order to measure the pressure in the hose 2 and in particular along the hose 2:
  • a pressure sensor 19b, c can be arranged on the outside of the hose 2, in particular resting against it and measuring the pressure therein - directly or indirectly via the shape of the cross section of the hose 2 - measure.
  • a pressure sensor 19a may be present, approximately in the middle of the U-shaped bend in the hose 2, which is directed towards the radially inner region of the peripheral contour of the hose 2 and measures its position relative to the counter-holder 21 lying radially further outside, in particular during the passage of the press roller 8, and from this the pressure inside the hose 2 is determined who can.
  • a heater 16 can be present in the interior 6, for example by electrically heating the counter-holder 21, in particular if this is made of metal.
  • the heater 16 is equipped with a temperature control 17, which is preferably part of the controller 1 * of the peristaltic pump 1.
  • Figure 4 shows an alternative to reshaping the hose 2 downstream of its pinch point S instead of and/or in addition to the vacuum connection 7, which can be used primarily with the hose 2 running straight in the area of the hose pump 1, i.e. less with the in a U-shape laid hose according to Figure 1a.
  • the flattened cross-section 2" of the tube 2 is deformed back into the original, round cross-sectional shape by means of passes of at least one further press roller 26, as best shown in the cross-sectional representations of Figures 5a - c with the tube 2:
  • Figure 5a shows the unloaded, circular cross section of the hose 2 cut sufficiently far away from the pinch point S.
  • Figure 5b shows the hose 2 in the almost tightly compressed state of its cross section 2" at point S, but not squeezed between a press roller 8 and a counter-holder 21 as in the hose pump according to Figure 1a, but between two - preferably identically shaped - Press rollers 8 which act on the tube 2 at the same pinch point S from two opposite sides with respect to the cross section of the tube 2 .
  • the press roller 8 is preferably attached to the free end of a rotary lever 28 with only one arm, and it is not a 2-arm drive unit 28 with a press roller 8 at each of its free ends.
  • the circumferential groove 26a of these pressure rollers 26 has a cross section that is approximately semicircular with a radius that is slightly larger than or equal to the radius of the outer circumference of the undeformed tube 2 according to FIG. 5a.
  • Figures 2 and 3 show solutions in which the hose 2 is not compressed in its cross-section by means of rigid press bodies 8 or 26, but rather by elastic, hollow press bodies that can be expanded in the cross-sectional direction of the hose 2 in the direction of its central longitudinal axis 2':
  • These can be press collars 24 that run in a ring around the longitudinal axis of the hose 2, or pressure pads 23 that are arranged on just one or two opposite sides of the cross section of the hose 2, which are present opposite one another, in particular at the same longitudinal position, in which case the two pressure pads located opposite one another 23 are always operated synchronously.
  • several pressure pads 23 or dress cuffs 24 are present one behind the other in the direction of flow 10 .
  • the pressure pads 2 or press sleeves 24 are supported on their radial outside on a fixed counter-holder 21, in the case of a press sleeve 24 a counter-holder tube running around the longitudinal direction 2' of the hose 21, and are at least in the expanded state not only at the beginning of the hose 2 réelleum, but compress its cross-section, ge if necessary to zero. If, as shown, the counter-holder 21 is part of the press pad 23 or the press sleeve 24, the two must be tightly connected to one another.
  • pressure pads 23 or press sleeves 24 four such, in this case ring-shaped, pressure pads with pressure chambers 18a-d are shown in the first construction according to FIGS. A tight fixation between the membrane of the press cushion 23 or the press sleeve 24 and the counter-holder 21 is then necessary between the chambers 18 a, b, c, d.
  • Each of these pressure chambers 18a-d which are separated from one another in a pressure-tight manner, is equipped with its own press-pressure connection 14ad, the pressurization of which—usually by opening and closing valves not shown—is controlled by the controller 1*, which is also not shown.
  • the peristaltic pump 1 is controlled in the correct time relation to one another in order to achieve the function described below: To push the material M forward in the conveying direction 10, the rearmost, first pinch point S1 in the desired conveying direction 10 is activated, i.e.
  • the one there Pressure chambers 18a of the compression sleeve 24 are subjected to pressure, so that their elastic wall, which rests against the wall 9 of the hose 2, expands radially inward and the hose 2 is radially squeezed together, preferably until its inner passage is closed.
  • the material M previously present in the hose at this pinch point S1 is pushed out both in the conveying direction 10 and in the opposite direction to this.
  • the last chamber 18d in the conveying direction 10 is further pressurized and the hose 2 is thereby compressed at this last pinch point S4 down to a cross-section of zero, i.e. closed and held.
  • pinch points S1, S2, S3 upstream of it are deactivated one after the other, i.e. the cross-section of the hose is opened again, beginning with the pinch point S1 and S1 furthest upstream then continuing with the respective next squeezing points S2, S3 in the conveying direction 10.
  • material from the upstream region is sucked through the expanding interior of the hose in the direction of the completely closed squeezing point S4.
  • the return deformation of the hose can be promoted by negative pressure connections 7, which in each case in the area between the pinching points S1-S4 create a negative pressure in the radial area between the membrane of the press sleeve 24, for example, which is supported on the counter-holder tube 21 and the hose 2.
  • FIG. 2e shows the state shortly before the last squeezing point S3 in the conveying direction 10 is deactivated before the closed squeezing point S4;
  • FIG. 2f already shows all other squeezing points S1-S3 that are present upstream of the closed last squeezing point S4 opened and the hose again has its unloaded, mostly circular, cross-section at these pinch points S1-S3.
  • the next conveying cycle can then begin again, beginning with the deactivation and closing of the most upstream squeezing point S1 according to FIG. 2a.
  • first and last pressing point as a pinch valve
  • conventional check valves for example with a valve seat and valve body, can also be provided in the hose upstream and downstream of the hose pump Rule allows contact between the Ma material and the joints between the valve seat and valve body, which is not desired due to the often adhesive effect of the material M.
  • FIGS. 3a, b also in a longitudinal section along the hose 2—show a second design in which these chambers 18a-d are connected to one another in terms of pressure , but by acting as a throttle, relatively small connecting openings 29a-c, which are preferably distributed over the circumference around the hose 2 as individual through-openings or as a single through-opening and not as a through-ring.
  • the first chamber 18a is in turn connected to a press-pressure connection 14A, but downstream of this at most the last press-pressure chamber 18d is connected to a further press-pressure connection 14B:
  • the pressure present at the press-pressure connection 14 A is reduced, if necessary to ambient pressure or even to the negative pressure range, which first causes the chamber to expand 18a and consequently also the downstream chambers 18b, 18c and 18d.
  • the tube 2 is deformed back into its original, open cross section at the upstream squeezing points S3, S2, S1 and material is subsequently supplied in the direction of the most downstream squeezing point S4.
  • press pressure can be applied to it for a short time and the chamber 18d there can preferably completely close the cross-section 2" of the hose 2, which gene of material from the area upstream of the peristaltic pump 1 favored taken.
  • the pressurizing of the pressurizing port 14B is not performed until the upstream chambers 18a-18c have all reached their fully contracted states.
  • FIG. 6 shows a third design of the peristaltic pump 1 similar to that of the first design according to FIGS. 2a to f.
  • the hose 2 itself is already part of the ring-shaped circumferential press sleeve 24 - which therefore does not have its own elastic membrane in addition to the hose 2 - of which in the case shown there are four pieces one behind the other in the flow direction 10 and form annular peripheral chambers 18a to 18d, the radial outside of which is in turn formed by a tubular counter-holder 21, in which the hose 2 runs along.
  • each of the chambers 18a to 18d can be pressurized via its own individual pressure connection 14a to 14d.
  • the chambers 18 a to d can be pressurized one after the other in the direction of flow 10, as in the design according to Figure 2, and the free cross section of the hose 2 can thereby be reduced at the individual pressing points S1 to S4, preferably at the ström upstream pressing point S1 can be reduced to zero, while the subsequent pressing points are not completely closed for conveying.
  • Figure 6 shows the situation that at the 1. Pressing point S1 the hose 2 is already tightly compressed and at the pressing point S2 the hose is already compressed down to a reasonable remaining cross-section, whereupon the compression at the subsequent pressing points S3 and S4, preferably again down to a reasonable remaining cross-section, takes place becomes. Since it is preferable not to damage hose 2, its inner cross-section between the individual pressing points S1 to S4 and at the beginning and end of hose pump 1 is kept open by a support ring 22 that fits into the inner circumference of hose 2 and is inserted into the hose the outer circumference of the hose 2 fitting to the inner circumference of the tubular counter-holder 21 holds. As a result, there is no need to fix the hose 2 in relation to the counter-holder 21, for example by gluing it, which also allows small compensatory movements of the hose 2 in or against the direction of flow 10.
  • the most downstream chamber 18d can initially remain activated for sucking up material, as described with reference to FIG and the hose cross-section opens there and material is sucked in up to the closed pressing point S4.
  • This is preferably only vented or subjected to negative pressure when or shortly before the first chamber 18a is already subjected to compression for the next delivery stroke.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention a pour objet, dans un dispositif de sortie (100) dans lequel le volume d'air compris dans un réservoir de stockage est relié à une pompe à vide (102) par un raccord à pression négative, de permettre à une pompe à vide (1) de faible cout d'être malgré tout employée en tant que pompe de refoulement en direction d'un consommateur (104). À cet effet, pour permettre le retour à sa forme initiale du tuyau (2) après compression, soit une dépression également, voire le vide, est appliqué(e) sur le côté extérieur du tuyau (2) dans l'espace intérieur (6) de la pompe péristaltique (1), soit un retour mécanique à la forme initiale est prévu. La déformation du tuyau (2) peut être effectuée par des corps de compression rigides (8) ou par des coussinets de compression extensibles (23) ou des soufflets de compression (24), présentant de préférence des compartiments (18a-d) individuels successifs.
PCT/EP2021/082526 2020-11-24 2021-11-22 Pompe péristaltique WO2022112183A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023530739A JP2023550140A (ja) 2020-11-24 2021-11-22 ホースポンプ
EP21819740.8A EP4251885A1 (fr) 2020-11-24 2021-11-22 Pompe péristaltique
US18/200,499 US20230287877A1 (en) 2020-11-24 2023-05-22 Hose Pump

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DE102020131083.8A DE102020131083A1 (de) 2020-11-24 2020-11-24 Schlauch-Pumpe

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US2358412A (en) * 1943-08-17 1944-09-19 Forsman Vacuum pump
DE894503C (de) * 1951-05-16 1953-10-26 Richard Dipl-Ing Schiel Ventillose Pumpe und Verdichter
US2829600A (en) * 1955-03-23 1958-04-08 Sveda Vladimir Conveying semi-liquid, plastic, loose or paste-like materials
US3542491A (en) * 1969-05-27 1970-11-24 Joseph W Newman Fluid pump
US4025121A (en) * 1976-02-26 1977-05-24 The United States Of America As Represented By The Secretary Of The Interior High-pressure injection hydraulic transport system with a peristaltic pump conveyor
DE3243784A1 (de) * 1982-11-26 1984-05-30 Wibau Ag Schlauchpumpe, insbesondere zum foerdern von beton
US5273406A (en) * 1991-09-12 1993-12-28 American Dengi Co., Inc. Pressure actuated peristaltic pump
WO2017019560A1 (fr) * 2015-07-24 2017-02-02 Johnson Roger N Système et procédé pour transport de matériau péristaltique
EP3441612A1 (fr) * 2017-08-08 2019-02-13 Scheugenpflug AG Unité de pompe, dispositif de stockage équipé d'une telle unité de pompe et procédé de fonctionnement dudit dispositif de stockage
CN111608877A (zh) * 2020-05-22 2020-09-01 赤壁圆源环保设备科技有限公司 两吸式稠餐余物碎泥提升装置

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DE9211703U1 (de) 1992-08-31 1993-01-21 Baltus, René, 5300 Bonn Membranpumpe
EP1222394A1 (fr) 1999-10-07 2002-07-17 Rha, Phil-chan Pompe tubulaire
NL2000167C2 (nl) 2006-07-28 2008-01-29 Bredel Hose Pumps B V Peristaltische pomp.
WO2009130250A1 (fr) 2008-04-22 2009-10-29 Trepko A/S Appareil de distribution péristaltique linéaire et procédé destiné à être utilisé dans l'appareil
EP2320968B1 (fr) 2008-08-05 2012-05-09 Michigan Critical Care Consultants, Inc. Appareil et procédé pour surveiller et contrôler un écoulement sanguin extracorporel par rapport à un état de fluide de patient

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2358412A (en) * 1943-08-17 1944-09-19 Forsman Vacuum pump
DE894503C (de) * 1951-05-16 1953-10-26 Richard Dipl-Ing Schiel Ventillose Pumpe und Verdichter
US2829600A (en) * 1955-03-23 1958-04-08 Sveda Vladimir Conveying semi-liquid, plastic, loose or paste-like materials
US3542491A (en) * 1969-05-27 1970-11-24 Joseph W Newman Fluid pump
US4025121A (en) * 1976-02-26 1977-05-24 The United States Of America As Represented By The Secretary Of The Interior High-pressure injection hydraulic transport system with a peristaltic pump conveyor
DE3243784A1 (de) * 1982-11-26 1984-05-30 Wibau Ag Schlauchpumpe, insbesondere zum foerdern von beton
US5273406A (en) * 1991-09-12 1993-12-28 American Dengi Co., Inc. Pressure actuated peristaltic pump
WO2017019560A1 (fr) * 2015-07-24 2017-02-02 Johnson Roger N Système et procédé pour transport de matériau péristaltique
EP3441612A1 (fr) * 2017-08-08 2019-02-13 Scheugenpflug AG Unité de pompe, dispositif de stockage équipé d'une telle unité de pompe et procédé de fonctionnement dudit dispositif de stockage
CN111608877A (zh) * 2020-05-22 2020-09-01 赤壁圆源环保设备科技有限公司 两吸式稠餐余物碎泥提升装置

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DE102020131083A1 (de) 2022-05-25

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