WO2022184576A1 - Procede et pompe de dosage proportionnel a faible debit - Google Patents
Procede et pompe de dosage proportionnel a faible debit Download PDFInfo
- Publication number
- WO2022184576A1 WO2022184576A1 PCT/EP2022/054788 EP2022054788W WO2022184576A1 WO 2022184576 A1 WO2022184576 A1 WO 2022184576A1 EP 2022054788 W EP2022054788 W EP 2022054788W WO 2022184576 A1 WO2022184576 A1 WO 2022184576A1
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- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic machine
- axis
- metering pump
- proportional metering
- rotor
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000000654 additive Substances 0.000 claims abstract description 24
- 230000000996 additive effect Effects 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 34
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 230000002572 peristaltic effect Effects 0.000 claims description 12
- 230000001939 inductive effect Effects 0.000 claims description 2
- 230000001131 transforming effect Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Images
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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/047—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being pin-and-slot mechanisms
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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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- 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
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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
- F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
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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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
Definitions
- the present invention relates to a method and a proportional metering pump for introducing a liquid additive into a main liquid stream, circulating in a pipe, the pump being of the reciprocating differential piston type for drawing the additive from a container and metering, this pump comprising a first inlet to receive a flow of main liquid which drives the pump, a second inlet to take the additive and an outlet for the mixture of additive and liquid.
- the differential piston performs an alternating movement and drives a plunger to take the additive to be dosed during an upstroke and to inject this additive into the main liquid or motor liquid. during a downhill run.
- the proportional dosage pump can no longer provide such a dosage.
- the proportional dosing pump then supplies a much higher dosage than what is required.
- the object of the invention is, above all, to propose a method and a proportional metering pump which no longer have or to a lesser degree the drawbacks mentioned above and which make it possible to optimize the operation of proportional metering pumps. , especially in the case where the targeted dosages are low.
- the invention is based in particular on the replacement of the previous metering mechanisms by pumps of the volumetric type, that is to say pumps in which the transfer of the fluid takes place by means of a displacement of volume at each cycle.
- the flow rate of a volumetric pump is then proportional to the actuation speed of its moving parts and depends very little on the discharge pressure.
- the invention is based, according to a preferred embodiment, on the replacement of the previous metering mechanisms by pumps of the peristaltic type, that is to say pumps capable of sucking up and delivering a liquid when they operate at low speed, i.e. at speeds below a few revolutions per hour.
- the invention relates in particular to a proportional metering pump comprising a hydraulic machine provided with an inlet and an outlet, the hydraulic machine extending along a longitudinal axis (x) and containing a member capable of performing a movement alternating along this axis, the supply of the hydraulic machine with main liquid at the inlet triggering an alternating movement in translation of the member along the longitudinal axis (x), characterized in that the proportional metering pump comprises:
- volumetric pump equipped with a rotation axis, an inlet intended to be placed in fluid communication with an additive tank and an outlet in fluid communication with the outlet of the hydraulic machine
- a motion converter designed to transform the reciprocating motion of translation of the component into a rotational motion, said rotational motion being transmitted directly or indirectly to the axis of rotation of the volumetric pump,
- the volumetric pump can be a peristaltic pump.
- the pump may also comprise a variable speed drive provided to adjust the speed of rotation resulting from the motion converter.
- the motion converter may comprise a rotor provided with at least one helical rail and an actuator which each extend longitudinally along the longitudinal axis (x), the actuator being connected at one of its ends with the member of the hydraulic machine and cooperating with the helical rail of the rotor, as well as an output connected in rotation with the rotor and preferably being in the form of a pinion, the rise then the descent of the member inducing the rotation of the rotor in the same direction.
- the actuator may comprise a shaft connected to the member of the hydraulic machine, a first axis mounted perpendicularly on the shaft of the actuator, the first axis being provided to slide at a first end in a first rectilinear rail arranged in the body of the motion converter, while the second shaft is provided to slide at a first end in a first helical rail arranged on the rotor.
- the actuator may comprise a shaft connected to the member of the hydraulic machine, a first axis and a second axis mounted perpendicularly on the shaft of the actuator, the first axis being provided to slide at a first end and at a second end respectively in a first rectilinear rail and in a second rectilinear rail arranged in the body of the motion converter, while the second axis is provided to slide at a first end and in a second end respectively in a first helical rail and in a second helical rail provided on the rotor.
- the shaft can be connected to the organ of the hydraulic machine by means of a pivot connection.
- the variator may comprise an output shaft, a toothed cone, the axis of revolution of which is inclined with respect to the output shaft, such that one of its edges of profile extends parallel to the output shaft, a roller integral in rotation with the output shaft and capable of translating along the output shaft, the output pinion of the converter meshing with the toothed wheel of the cone, the toothed cone driving the roller in rotation by adhesion as well as the output shaft, itself driving the shaft of the volumetric pump.
- the variator may further comprise means for adjusting the position of the roller on the output shaft of the variator, these means comprising a support for fixing the roller, further integral with a press - stuffing box mounted on the body of the rotor and whose tightening / loosening on the body of the rotor allows the movement of the roller along the output axis of the drive.
- the variator may include disengagement means making it possible to move the surface of the cone away from the roller, so as to prevent the roller from being driven by adhesion.
- the disengagement means may consist of a pull rod passing through a support integral with the body of the motion converter and anchored in the toothed cone, and of a spring mounted compressed on said pull rod to press the cone against the roller, a pull on said pull tab further compressing the spring and making it possible to move the cone away from the roller.
- the proportional metering pump can include an injection T fed by the output of the hydraulic machine and by the output of the volumetric pump.
- the injection tee can be provided with a first non-return valve and a second non-return valve provided respectively to prevent backflow towards the hydraulic machine and towards the positive-displacement pump.
- the invention also relates to a proportional metering method implementing a proportional metering pump according to the invention, and in which the following steps are carried out:
- the volumetric pump inlet is connected to a container filled with the additive to be dosed
- the inlet of the hydraulic machine is connected to a source of main liquid
- One proceeds to supply the inlet of the hydraulic machine with main liquid according to a predetermined flow rate, so that the supply of the hydraulic machine actuates the volumetric pump which thus supplies the output of the hydraulic machine with additive, or well the injection T if the outlet of the pump is fitted with an injection T, the additive mixing with the main liquid.
- This figure represents a schematic view of a hydraulic machine that can be used in the invention.
- This figure represents a schematic side view of a proportional metering pump according to the invention.
- This figure shows a detail of the converter of a proportional metering pump according to one embodiment of the invention.
- This figure shows a detail of the drive of a proportional metering pump according to one embodiment of the invention.
- the hydraulic machine 1 comprises a differential hydraulic piston 16 with reciprocating movement contained in an envelope 190 consisting of a cylindrical body extending along an axis (x) and surmounted by a cover 191 assembled to the body in a removable manner, in particular by screwing .
- the member also called differential piston 16 is arranged in the casing 190 to slide in reciprocating motion along the axis (x).
- the member 16 comprises, in the upper part, an upper crown 160 of large section, the periphery of which bears in a sealed manner against the internal wall of the casing.
- the barrel of the differential piston, coaxial with the casing and of smaller diameter than the upper crown 160 is integral with this crown and extends downwards.
- the lower part of the piston barrel slides in a sealed manner in a cylindrical housing 17 coaxial with the casing.
- the barrel is closed at the bottom by a lower base 161.
- the differential piston 16 and the cylindrical housing 17 compartmentalize the interior of the casing along a so-called “mixing" chamber 14 delimited by the cylindrical housing 17 and the lower base of the differential piston 161, a so-called “upper” chamber 13 delimited by the upper crown 160 and the cover 191 of the casing, and a so-called “lower” chamber 12, of substantially annular shape, delimited by the part below the upper crown 160, by the casing and by the cylindrical housing 17.
- the hydraulic machine comprises a first pipe 10 connecting the lower chamber 12 to the outside, and a second pipe 11 connecting the mixing chamber 14 to the outside.
- a cylindrical sleeve 15 coaxial with the casing extends from the mixing chamber downwards to allow the connection of the mixing chamber to an injection device 2.
- This injection device is actuated by the hydraulic machine by means of a rod 162 of the piston, itself connected to an additive pumping means (not shown in the figures).
- an additive pumping means not shown in the figures.
- Hydraulic switching means are provided for supplying and discharging the chambers 12, 13, 14 separated by the piston. These switching means are controlled by the displacements of the piston and comprise a connecting rod 180 acting on a distribution member which can assume two stable positions. More specifically, the dispensing member comprises at least one valve holder 181 comprising at least a first so-called “upper” valve 182 cooperating with a seat 163 formed in the upper crown of the piston, and at least a second so-called “lower” valve. 183 cooperating with a seat 164 formed in the lower base of the piston.
- the hydraulic machine further comprises triggering means comprising a pusher 185 capable of causing, at the end of the stroke of the piston, by coming to rest against a stop, a sudden change in the position of the switching means under the action of a elastic means 18, for reversing the stroke of the piston.
- triggering means comprising a pusher 185 capable of causing, at the end of the stroke of the piston, by coming to rest against a stop, a sudden change in the position of the switching means under the action of a elastic means 18, for reversing the stroke of the piston.
- the coming to rest against a stop takes place in the vicinity of the cover 191 to allow the piston to change its upward stroke into a downward stroke.
- the bearing against a stop 184 also takes place near the lower part of the casing to allow the piston to change its downward stroke into an upward stroke.
- the connecting rod 180 is hinged at one end to a fixed point relative to the piston 16, while the other end of the connecting rod can move in a vertical window of the valve holder 181 and come into abutment against one of the two ends. of this window, in one of the two stable positions of the dispensing member.
- the elastic means 18 is integral, at each of its ends, with a hinge member received respectively in a housing provided on the connecting rod and on the pusher 185. Each housing is open in a direction substantially opposite to the direction of the force. exerted by the elastic means 18 in the wall of the housing considered.
- This elastic means 18 can advantageously be constituted by a convex leaf spring.
- the inlet of the hydraulic machine for the main liquid is located at the level of the first pipe 10, and the outlet for the mixture is located at the level of the second pipe 11.
- the main liquid under pressure generally water
- the upper valves are closed while the lower valves are open, allowing the discharge of the liquid from the upper chamber 13 towards the mixing chamber 14 then the evacuation of the mixture towards the outlet via the pipe 11.
- the latter begins an upward stroke, which tends to reduce the volume of the upper chamber and therefore to drive the contents towards the mixing chamber, since the communication is open.
- the pusher 185 comes to bear against a stop linked to the cover 191, which causes, under the effect of the spring blade, the tilting of the connecting rod 180 towards the other low stable position, with movement of the carrier. valves towards the base of the piston.
- the lower flaps close while the upper flaps open.
- the pressurized liquid can pass from the lower chamber 12 to the upper chamber 13, the communication of which with the mixing chamber 14 is now cut off, and the movement of the piston is reversed. This movement is reversed due to the pressure that the main liquid admitted into the upper chamber exerts on the upper face of the upper crown.
- the pusher 185 At the end of the downward stroke, the pusher 185 by its lower end encounters a stop 184 integral with the envelope 190, which causes a new tilting of the connecting rod towards the raised position and a displacement of the valve holder 181 causing the valves to close. upper ones and the opening of the lower flaps.
- the movement of the piston 16 is again reversed and the piston restarts following an upward stroke.
- the reciprocating movement of the piston when supplying the hydraulic machine with liquid makes it possible to alternately generate a suction as far as the outlet 11, the latter being connected to an injection device 2, also called a metering mechanism 2 .
- the hydraulic machine can also be of the type described in the document EP1971776 A1 and on the .
- This hydraulic machine comprises a casing comprising a body and a cover, a separation means capable of carrying out an alternating movement in the casing between the body and the cover, this separation means defining two chambers.
- the hydraulic machine also comprises hydraulic switching means for supplying liquid to and discharging from the aforementioned chambers. These switching means comprise a distribution member which can assume two stable positions and is controlled by the displacements of the separation means.
- the body of the casing also contains a compartment connected to a pressurized liquid inlet and in which the switching means are housed, as well as triggering means comprising a pusher linked to the separation means, capable of causing, at the end stroke, a sudden change in the position of the switching means, under the action of an elastic means, for reversing the stroke.
- the dispensing member comprises a dispensing drawer applied against a flat plate fixed relative to the body of the envelope, the dispensing drawer being able to slide in a sealed manner, without seal, against the plate which comprises orifices respectively connected to the chambers of the envelope and a liquid outlet.
- the drawer is then provided to, depending on its position, close some of the orifices or place them in communication with the fluid inlet or with the exhaust.
- the proportional metering pump comprises a hydraulic machine 1 such as those described previously.
- This machine is therefore equipped with an inlet 10 and an outlet 11, the hydraulic machine extending along a longitudinal axis x and containing a member 16 capable of carrying out a reciprocating movement, the supply of the pump with liquid at the inlet triggering an alternating translational movement along the longitudinal axis x of the member 16.
- the proportional metering pump comprises a pump of the volumetric type 4, equipped with a shaft 42, an inlet 40 intended to be placed in fluid communication with a reservoir, and an outlet 41 in fluid communication 51 with the output 11 of the hydraulic machine.
- a positive displacement pump is a pump in which a certain amount of "trapped" fluid is forced to move to the outlet.
- the flow rate of a volumetric pump is proportional to the speed of actuation of its moving parts and depends very little on the discharge pressure, on the other hand, the energy consumed by the pump is proportional to the pressure difference between the outlet and the pump inlet.
- the volumetric pump is a peristaltic pump.
- peristaltic pump a pump used to produce a flow of fluids, either liquids or gases.
- the fluid, liquid or gaseous is contained in a flexible tube, and is driven by a system pressing the tube inside the pump.
- the peristaltic pump generally consists of a head, usually circular in shape, inside which there is a flexible tube through which the fluid to be pumped progresses.
- This tube is deformed by a rotor equipped with rollers or rollers, which compress it against the circular head.
- the rollers which seal portions of the pipe during their rotation will displace the retained fluid in the same direction.
- the suction of the fluid at the inlet of the pump is possible due to the elasticity of the pipe.
- the proportional metering pump also comprises a motion converter 2 designed to transform the reciprocating translational movement of the member 16 of the hydraulic machine into a rotational movement. This rotational movement is intended to be transmitted to the axis of rotation 42 of the volumetric pump 4, preferably peristaltic, so as to drive said pump.
- the motion converter 2 comprises a body 22, a rotor 23 itself housed in another body and provided with at least one helical rail and an actuator 21 which extends longitudinally along the longitudinal axis x of the hydraulic machine .
- the body 22 is fixed relative to the hydraulic machine while the rotor 23 is in rotation relative to the hydraulic machine and while the actuator 21 is in translation relative to the hydraulic machine.
- the actuator 21 is connected at one of its ends with the member 16 of the hydraulic machine and cooperates with the helical rail of the rotor 23.
- a pinion 24 connected in rotation with the rotor 23, which constitutes an output of the converter according to a rotational movement, which is therefore initially induced by the translation of the actuator 21.
- the actuator 21 comprises a shaft 29 connected to the member 16 of the hydraulic machine, a first axis 25 and a second axis 26 each mounted perpendicularly on the shaft 29 of the actuator.
- first axis 25 is provided to slide at a first end 25a in a first rectilinear rail 27a arranged in the body 22 of the motion converter 2 to prevent the shaft 29 from rotating and thus to guide it only in translation.
- the second axis 26 is for its part designed to slide at a first end 26a in a first helical rail 28a arranged on the rotor 23, so as to drive the rotor in rotation, without the shaft 29 rotating.
- the first axis is provided to slide at a first end 25a and at a second end 25b respectively in a first rectilinear rail 27a and in a second rectilinear rail 27b arranged in the body 22 of motion converter 2.
- the second axis 26 is provided to slide at a first end 26a and at a second end 26b respectively in a first helical rail 28a and in a second helical rail 28b arranged on the rotor 23, so as to drive the rotating rotor without the shaft 29 rotating.
- the shaft 29 of the actuator 21 can be provided with one or more longitudinal grooves each capable of receiving a rib made on the body 22 of the motion converter 2.
- the shaft 29 is connected to the member 16 of the hydraulic machine by means of a pivot connection 20.
- the member 16 has a natural tendency to turn on itself in operation.
- the pivot connection makes it possible to leave this movement free, and thus to avoid unscrewing of the shaft 29 and/or irregular wear of the member 16.
- the proportional metering pump comprises a drive 3 provided to adjust the speed of rotation resulting from the motion converter 2.
- the variator 3 comprises an output shaft 32 substantially parallel to the axis (x) of the hydraulic machine, a toothed cone 30, the axis of revolution of which is inclined so that one of its longitudinal edges extends parallel to output axis 32.
- a roller 33 is mounted on the output shaft 32 so as to be integral in rotation with the output shaft 32.
- the roller remains in contact with the toothed cone on its longitudinal edge.
- the converter output pinion 24 drives the toothed wheel of the cone 30, while the toothed cone 30 drives the roller 33 in rotation by adhesion.
- roller 33 drives the output shaft 32, which itself drives the shaft 42 of the volumetric pump.
- This variator comprises means 34, 340 for adjusting the position of the roller 33 along the output axis 32 of the variator.
- These means comprise a support 340 for fixing the roller, which support is integral with a stuffing box 34 mounted on the body of the rotor 23 and the tightening/loosening of which on the body of the rotor 23 allows the movement of the roller along the output axis 32.
- the variator comprises disengagement means 31 making it possible to move the cone 30 away from the roller 33, so that the cone no longer drives the roller by adhesion.
- the disengaging means 31 consist of a pull rod passing through a support 35 integral with the body 22 of the motion converter 2 and anchored in the toothed cone, and of a spring mounted compressed on said pull rod to press the cone against the roller, pulling on said pull tab further compressing the spring and allowing the cone to move away from the roller.
- the proportional metering pump comprises a T d injection 5 which is therefore fed by the output 11 of the hydraulic machine and by the output 41 of the peristaltic pump.
- the injection Tee is equipped with a first non-return valve and a second non-return valve provided respectively downstream of the outlet 11 of the hydraulic machine and downstream of the outlet 41 of the peristaltic pump to prevent the mixture from flowing back respectively towards the hydraulic machine and towards the peristaltic pump.
- the inlet 40 of the volumetric pump 4, preferably peristaltic, is connected to a container filled with the additive to be metered,
- the inlet 10 of the hydraulic machine 1 is connected to a source of main liquid
- the inlet of the hydraulic machine is supplied with the main liquid according to a predetermined flow rate.
- the drive 3 is adjusted (for example by adjusting the position of the roller on the output shaft 32), according to the expected metering, before proceeding with the adjustment. supplying the inlet of the hydraulic machine with main liquid according to a predetermined flow rate.
- variants of the invention may in particular be considered comprising only a selection of characteristics described, isolated from the other characteristics described (even if this selection is isolated within a sentence including these other features), if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art.
- This selection includes at least one feature, preferably functional without structural details, or with only part of the structural details if only this part is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Rotary Pumps (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
Claims (14)
- Pompe à dosage proportionnel comprenant une machine hydraulique (1) dotée d’une entrée (10) et d’une sortie (11), la machine hydraulique s’étendant suivant un axe longitudinal (x) et renfermant un organe (16) propre à effectuer un mouvement alternatif suivant cet axe, l’alimentation de la machine hydraulique en liquide principal en entrée déclenchant un mouvement alternatif en translation de l’organe (16) suivant l’axe longitudinal (x), caractérisé en ce que la pompe à dosage proportionnel comporte :
- une pompe volumétrique (4), dotée d’un axe (42) de rotation, d’une entrée (40) destinée à être mise en communication de fluide avec un réservoir d’additif et d’une sortie (41) en communication de fluide (51) avec la sortie (11) de la machine hydraulique,
- un convertisseur de mouvement (2) prévu pour transformer le mouvement alternatif de translation de l’organe (16) de la machine hydraulique en un mouvement de rotation, ledit mouvement de rotation étant transmis directement ou indirectement à l’axe de rotation de la pompe volumétrique (4),
de sorte que l’alimentation de la machine hydraulique actionne la pompe volumétrique qui alimente ainsi en additif la sortie (11) de la machine hydraulique, l’additif se mélangeant au liquide principal en sortie de la machine hydraulique. - Pompe à dosage proportionnel selon la revendication 1, caractérisée en ce que la pompe volumétrique (4) est une pompe péristaltique.
- Pompe à dosage proportionnel selon la revendication 1 ou 2, caractérisée en ce qu’elle comporte en outre un variateur (3) prévu pour ajuster la vitesse de la rotation issue du convertisseur de mouvement (2).
- Pompe à dosage proportionnel selon l’une quelconque des revendications précédentes, caractérisée en ce que le convertisseur de mouvement (2) comporte un rotor (23) doté d’au moins un rail hélicoïdal (28a, 28b) et un actionneur (21) qui s’étendent chacun longitudinalement suivant l’axe longitudinal (x) de la machine hydraulique, l’actionneur étant lié en l’une de ses extrémités avec l’organe (16) de la machine hydraulique et coopérant avec le rail hélicoïdal du rotor (23), ainsi qu’une sortie liée en rotation avec le rotor (23) et se présentant préférentiellement sous la forme d’un pignon (24), la montée puis la descente de l’organe (16) de la machine hydraulique induisant la rotation du rotor (23) selon un même sens.
- Pompe à dosage proportionnel selon la revendication précédente, caractérisée en ce que l’actionneur (21) comprend un arbre (29) connecté à l’organe (16) de la machine hydraulique, un premier axe (25) et un second axe (26) montés de manière perpendiculaires sur l’arbre (29) de l’actionneur, le premier axe étant prévu pour coulisser en une première extrémité (25a, 25b) dans un premier rail rectiligne (27a, 27b) aménagé dans le corps (22) du convertisseur de mouvement (2), tandis que le second axe est prévu pour coulisser en une première extrémité (26a, 26b) dans le rail hélicoïdal (28a, 28b) aménagé sur le rotor (23).
- Pompe à dosage proportionnel selon la revendication 4, caractérisée en ce que l’actionneur (21) comprend un arbre (29) connecté à l’organe (16), un premier axe (25) et un second axe (26) montés de manière perpendiculaires sur l’arbre (29) de l’actionneur, le premier axe étant prévu pour coulisser en une première extrémité et en une seconde extrémité (25a, 25b) respectivement dans un premier rail rectiligne et dans un second rail rectiligne (27a, 27b) aménagés dans le corps (22) du convertisseur de mouvement (2), tandis que le second axe est prévu pour coulisser en une première extrémité et en une seconde extrémité (26a, 26b) respectivement dans un premier rail hélicoïdal et dans un second rail hélicoïdal (28a, 28b) aménagés sur le rotor (23).
- Pompe à dosage proportionnel selon l’une des revendications 5 ou 6, caractérisée en ce que l’arbre (29) est connecté à l’organe (16) de la machine hydraulique au moyen d’une liaison pivot (20).
- Pompe à dosage proportionnel selon l’une quelconque des revendications 3 à 7, caractérisée en ce que le variateur (3) comprend un axe de sortie (32), un cône denté (30), dont l’axe de révolution est incliné par rapport à l’axe de sortie (32), de telle sorte qu’une de ses arêtes de profil s’étende parallèlement à l’axe de sortie (32), un galet (33) solidaire en rotation de l’axe de sortie (32) et apte à translater le long de l’axe de sortie (32), le pignon (24) de sortie du convertisseur engrenant la roue dentée du cône (30), le cône denté (30) entraînant le galet (33) en rotation par adhérence ainsi que l’axe de sortie (32), lui-même entraînant l’axe (42) de la pompe volumétrique.
- Pompe à dosage proportionnel selon la revendication précédente, caractérisée en ce que le variateur (3) comprend des moyens (34, 340) pour régler la position du galet (33) sur l’axe de sortie (32) du variateur, ces moyens comportant un support (340) de fixation du galet, en outre solidaire d’un presse-étoupe (34) monté sur le corps du rotor et dont le serrage / desserrage sur le corps du rotor (23) permet le déplacement du galet le long de l’axe de sortie (32) du variateur.
- Pompe à dosage proportionnel selon la revendication 8 ou 9, caractérisée en ce que le variateur comporte des moyens de débrayage (31) permettant d’éloigner la surface du cône (30) du galet (33), de manière à interdire l’entraînement du galet par adhérence.
- Pompe à dosage proportionnel selon la revendication précédente, caractérisée en ce que les moyens de débrayage (31) consistent en une tirette traversant un support (35) solidaire du corps (22) du convertisseur de mouvement (2) et ancrée dans le cône denté, et en un ressort monté comprimé sur ladite tirette pour plaquer le cône contre le galet, une traction sur ladite tirette comprimant davantage le ressort et permettant d’éloigner le cône du galet.
- Pompe à dosage proportionnel selon l’une quelconque des revendications précédentes, caractérisée en ce qu’elle comporte un T d’injection (5) alimenté par la sortie (11) de la machine hydraulique et par la sortie (41) de la pompe volumétrique.
- Pompe à dosage proportionnel selon la revendication précédente, caractérisée en ce que le T d’injection est doté d’un premier clapet anti-retour et d’un second clapet anti-retour prévus respectivement pour empêcher le reflux vers la machine hydraulique et vers la pompe volumétrique.
- Procédé de dosage proportionnel mettant en œuvre une pompe à dosage proportionnel conforme à l’une quelconque des revendications 3 à 13, caractérisé en ce qu’on procède aux étapes suivantes :
- On raccorde l’entrée (40) de la pompe volumétrique (4) à un récipient rempli de l’additif à doser ,
- On raccorde l’entrée (10) de la machine hydraulique (1) à une source de liquide principal ,
- On effectue un réglage du variateur (3) prévu pour ajuster la vitesse de la rotation résultant du convertisseur de mouvement (2), en fonction du dosage attendu,
- On procède à l’alimentation de l’entrée de la machine hydraulique en liquide principal suivant un débit prédéterminé, de sorte que l’alimentation de la machine hydraulique actionne la pompe volumétrique qui alimente ainsi en additif la sortie (11) de la machine hydraulique, ou bien le T d’injection si la sortie de la pompe est dotée d’un T d’injection, l’additif se mélangeant au liquide principal.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22709673.2A EP4301981A1 (fr) | 2021-03-02 | 2022-02-25 | Procede et pompe de dosage proportionnel a faible debit |
CA3209186A CA3209186A1 (fr) | 2021-03-02 | 2022-02-25 | Procede et pompe de dosage proportionnel a faible debit |
JP2023553118A JP2024512896A (ja) | 2021-03-02 | 2022-02-25 | 少流量で比例計量する方法及びポンプ |
CN202280018749.1A CN116917619A (zh) | 2021-03-02 | 2022-02-25 | 低流量比例计量的方法和泵 |
IL305387A IL305387A (en) | 2021-03-02 | 2022-02-25 | Low flow proportional metering method and pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2102019 | 2021-03-02 | ||
FR2102019A FR3120402B1 (fr) | 2021-03-02 | 2021-03-02 | Procede et pompe de dosage proportionnel a faible debit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022184576A1 true WO2022184576A1 (fr) | 2022-09-09 |
Family
ID=77180058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2022/054788 WO2022184576A1 (fr) | 2021-03-02 | 2022-02-25 | Procede et pompe de dosage proportionnel a faible debit |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP4301981A1 (fr) |
JP (1) | JP2024512896A (fr) |
CN (1) | CN116917619A (fr) |
CA (1) | CA3209186A1 (fr) |
FR (1) | FR3120402B1 (fr) |
IL (1) | IL305387A (fr) |
WO (1) | WO2022184576A1 (fr) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2213298A1 (de) * | 1972-03-18 | 1973-09-27 | Rww Filter Gmbh | Dosiergeraet |
EP0255791A1 (fr) | 1986-07-31 | 1988-02-10 | Jean Cloup | Perfectionnement aux dispositifs d'injection d'un produit additif dosé dans un fluide principal |
FR2681646A1 (fr) * | 1991-09-19 | 1993-03-26 | Ody Ste Civile Rech | Pompe comportant un systeme de dosage, et dispositif comportant une telle pompe, pour injection dans un liquide principal d'un additif. |
US5951265A (en) * | 1997-12-29 | 1999-09-14 | Diemold International, Inc. | Fluid driven reciprocating engine or pump having overcenter, snap-action mechanical valve control |
EP1151196A1 (fr) | 1999-02-09 | 2001-11-07 | Dosatron International | Machine hydraulique differentielle a mouvement alternatif, en particulier moteur hydraulique differentiel |
EP1971776A1 (fr) | 2006-01-13 | 2008-09-24 | Dosatron International | Machine hydraulique, en particulier moteur hydraulique, et doseur comportant un tel moteur. |
DE102008019783A1 (de) * | 2007-04-23 | 2008-11-13 | Troska, Günter | Verdrängerdosierpumpe |
EP3290696A1 (fr) * | 2016-09-06 | 2018-03-07 | Hamilton Sundstrand Corporation | Mesure pour combinaison de moteur et de pompe à fluide |
EP3440353B1 (fr) | 2016-04-07 | 2020-02-12 | Dosatron International | Pompe a dosage proportionnel, procede de montage et de demontage d'une telle pompe |
-
2021
- 2021-03-02 FR FR2102019A patent/FR3120402B1/fr active Active
-
2022
- 2022-02-25 CN CN202280018749.1A patent/CN116917619A/zh active Pending
- 2022-02-25 CA CA3209186A patent/CA3209186A1/fr active Pending
- 2022-02-25 WO PCT/EP2022/054788 patent/WO2022184576A1/fr active Application Filing
- 2022-02-25 EP EP22709673.2A patent/EP4301981A1/fr active Pending
- 2022-02-25 IL IL305387A patent/IL305387A/en unknown
- 2022-02-25 JP JP2023553118A patent/JP2024512896A/ja active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2213298A1 (de) * | 1972-03-18 | 1973-09-27 | Rww Filter Gmbh | Dosiergeraet |
EP0255791A1 (fr) | 1986-07-31 | 1988-02-10 | Jean Cloup | Perfectionnement aux dispositifs d'injection d'un produit additif dosé dans un fluide principal |
FR2681646A1 (fr) * | 1991-09-19 | 1993-03-26 | Ody Ste Civile Rech | Pompe comportant un systeme de dosage, et dispositif comportant une telle pompe, pour injection dans un liquide principal d'un additif. |
US5951265A (en) * | 1997-12-29 | 1999-09-14 | Diemold International, Inc. | Fluid driven reciprocating engine or pump having overcenter, snap-action mechanical valve control |
EP1151196A1 (fr) | 1999-02-09 | 2001-11-07 | Dosatron International | Machine hydraulique differentielle a mouvement alternatif, en particulier moteur hydraulique differentiel |
EP1971776A1 (fr) | 2006-01-13 | 2008-09-24 | Dosatron International | Machine hydraulique, en particulier moteur hydraulique, et doseur comportant un tel moteur. |
DE102008019783A1 (de) * | 2007-04-23 | 2008-11-13 | Troska, Günter | Verdrängerdosierpumpe |
EP3440353B1 (fr) | 2016-04-07 | 2020-02-12 | Dosatron International | Pompe a dosage proportionnel, procede de montage et de demontage d'une telle pompe |
EP3290696A1 (fr) * | 2016-09-06 | 2018-03-07 | Hamilton Sundstrand Corporation | Mesure pour combinaison de moteur et de pompe à fluide |
Also Published As
Publication number | Publication date |
---|---|
IL305387A (en) | 2023-10-01 |
EP4301981A1 (fr) | 2024-01-10 |
CA3209186A1 (fr) | 2022-09-09 |
JP2024512896A (ja) | 2024-03-21 |
FR3120402A1 (fr) | 2022-09-09 |
FR3120402B1 (fr) | 2023-04-14 |
CN116917619A (zh) | 2023-10-20 |
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