EP3214307B1 - Metering pump - Google Patents
Metering pump Download PDFInfo
- Publication number
- EP3214307B1 EP3214307B1 EP17158879.1A EP17158879A EP3214307B1 EP 3214307 B1 EP3214307 B1 EP 3214307B1 EP 17158879 A EP17158879 A EP 17158879A EP 3214307 B1 EP3214307 B1 EP 3214307B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering pump
- head
- rotary motion
- pump according
- segment
- 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.)
- Active
Links
- 239000007788 liquid Substances 0.000 claims description 26
- 238000005086 pumping Methods 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000002441 reversible effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- 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
- F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
- F04B23/028—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir the pump being mounted on top of the reservoir
-
- 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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- 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
- F04B9/103—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 having only one pumping chamber
Definitions
- the present invention relates to a metering pump.
- Volumetric metering pumps which comprise, within a head to be interposed between segments of piping of a hydraulic circuit, an impeller provided with vanes, which rotates due to the flowing fluid and which, by virtue of means for the transmission and kinematic reduction of the rotary motion and means for converting the rotary motion into reciprocating rectilinear motion, mechanically moves associated means for drawing and pumping the liquid to be metered.
- These means for drawing and pumping the liquid to be metered are arranged inside a substantially rigid container vessel for said liquid, which is fixed to the head, and comprise an injection piston which is moved by the motion conversion means so as to enter and exit, with its lower end, a metering chamber.
- Said metering chamber on the opposite side with respect to the entry side for the injection piston, is closed by a flow control element, which is pushed closed by elastic means; the chamber is connected to the inside of the container on the side of the injection piston and to a rigid duct for the rise of the metered liquid toward the head on the side of the flow control element.
- the metering chamber is generally located proximate to the bottom of the container vessel of the liquid to be metered, so as to utilize as much as possible the liquid contained in said vessel and accordingly the rigid riser duct extends from the bottom of the container vessel up to the head.
- a first limitation is inconvenience during replacement of the empty container with another new one; the container is in fact replaced without removing the head, which is installed on a line of a hydraulic system, often in a confined space and in a position that is awkward to access on the part of a user.
- liquid to be metered that remains on the surfaces of the duct constitutes a loss of useful material.
- EP1832746 discloses a dosage pump comprising a hollow body which is adapted to be interposed between pipe portions of a hydraulic circuit and is provided internally with a rotating element provided with vanes, which rotates as a consequence of the flowing fluid and is associated with means for transmission and speed reduction and with means for converting the rotary motion into reciprocating rectilinear motion, which in turn are connected to means for drawing and pumping the liquid to be dosed, the latter means being provided, inside a container for the liquid which is fixed to the hollow body, by an injection stem which is moved by the motion conversion means so as to enter and exit with its end from a dosage chamber, which on the opposite side with respect to the entry side for the injection stem is closed by a flow control element, which is pushed closed by elastic means; the chamber is connected to the inside of the container on the side of the stem and to a channel for connection to a tube for the rise of the dosed liquid on the side of the flow control element toward the hollow body.
- the chamber and the connection channel are formed in a single body, inside which the
- US 3 549 048 A discloses a fluid pressure operated chemical proportionating apparatus comprising a combination of features as set forth in the pre-characterizing portion of the appended claim 1.
- IT PD20 110 240 A1 discloses a dosing device with a volumetric pump comprising, inside a head to be interposed between sections of pipe of a hydraulic circuit, a bladed impeller, rotating due to the effect of the fluid in passage, which impeller by means of transmission and kinematic reduction of the rotary motion, and means of transforming the rotary motion into an alternative rectilinear motion, mechanically moves an associated pumping means of a liquid to be dosed, and in a corresponding associated container, the pumping means comprises an injection piston moved by the motion transformation means to enter and exit with its lower end from a dosing chamber.
- Means for transforming the rotary motion into an alternative rectilinear motion, the pumping means of the liquid to be dosed, and the chamber of metering, are defined within the same casing fixed to the head, the container for the liquid to be dosed being reversibly fixed to the casing with quick coupling means, directly or by interposition of a flexible tubular element.
- the aim of the present invention is to provide a metering pump that is capable of obviating the cited limitations of metering pumps of the known type.
- an object of the invention is to provide a metering pump the container of which is simpler to disengage and reengage.
- Another object of the invention is to provide a metering pump that is capable of better utilizing the liquid to be metered that is present in the container, minimizing losses and waste.
- a further object of the invention is to provide a metering pump that is simple to handle, like known metering pumps, even without particular prior teachings.
- a metering pump according to the invention is designated generally by the reference numeral 10.
- the metering pump 10 comprises, inside a head 11:
- a rigid container 16 for a liquid to be metered is fixed to the head 11 by means of reversible bayonet coupling means 45 described hereinafter, the pumping means 15 being provided with an intake duct 17 that is extended so as to draw from the rigid container 16, as clearly visible in Figure 2 , and in particular from the bottom 18 of the rigid container 16.
- the reversible bayonet coupling means 45 comprise a collar 46 of the rigid container 16, which is provided with external radial protrusions 47 which are contoured for bayonet coupling in corresponding recesses 48 formed within a corresponding coupling portion 49 of the head 11.
- the intake duct 17 comprises a first segment 19, which is integral with the pumping means 15 and is extended, within the head 11, between the pumping means 15 and the inlet 20 of the rigid container 16, and a second segment 21, which is extended from the end of the first portion 19 to the bottom 18 of the rigid container 16.
- the second segment 21 is constituted by a flexible tube.
- the operations for removing an empty container and fitting the newly filled container are simpler and more rapid, since the flexible tube can be extracted more easily than a rigid duct as in metering pumps of the known type.
- the flexible tube retains on its surfaces less liquid to be metered, causing a lower loss of said liquid upon its extraction from a container to be replaced.
- the rigid container 16 is more comfortable to hold with a grip that is safe and useful to induce thereon a rotation for coupling or uncoupling with respect to the head 11, differently from known metering pumps with non-rigid bag-like containers, which are more difficult to hold and therefore turn in order to induce their bayonet coupling or uncoupling with respect to the head; a safe grip of the container is in fact fundamental in all situations in which the metering pump 10 is mounted in a space that is so tight as to prevent the hand of the user from gripping directly the bayonet coupling means and it is therefore fundamental for the container to be completely and easily rotatable by holding it by its bottom, which is not feasible with a container of the bag-like type or lacking rigidity in general.
- the pumping means 15 comprise an injection piston 22 which is moved by the motion conversion means 14 so as to enter and exit alternately, with its lower end, a metering chamber 23.
- the metering chamber 23 is provided inside a contoured body 24, which is fixed inside the head 11 and on which contoured body 24 there is also an intake channel 25 and a discharge channel 26 for the liquid to be metered.
- the valve means 27 comprise a first flow control element 28, with a complementary contrast pusher spring 29, for direct closure of the chamber 23, and a second lateral flow control element 30, with a corresponding contrast pusher spring 31, arranged in the discharge channel 26.
- the first segment 19 of the intake duct 17, inside which the intake channel 25 is formed, extends from the contoured body 24.
- the means 13 for transmission and kinematic reduction of rotary motion comprise a series of reduction gears 32, 33, 34, 35, which are to be understood as being of a per se known type.
- a shaft 36 extends from the last gear 35 and is designed to transfer the torque from the means 13 for transmission and kinematic reduction of the rotary motion to the means 14 for converting the rotary motion into reciprocating rectilinear motion.
- the means 14 for converting rotary motion into reciprocating rectilinear motion comprise a gear 37 which is keyed onto the shaft 36 and a pinion 38 which is matched with the first gear 37 and is integral with a second shaft 39 which supports an eccentric disk 40; the eccentric disk 40 is arranged so as to rotate within a slot 41, the height of which corresponds to the diameter of the eccentric disk 40 and which is formed on the head 42 of the injection piston 22 of the pumping means 15.
- the invention provides a metering pump the container of which is simpler to uncouple and recouple in order to manage refilling.
- the invention provides a metering pump that is capable of better utilizing the liquid to be metered that is present in the container, minimizing losses and waste.
- the invention provides a metering pump that is simple to handle, like known metering pumps, even without particular prior teachings.
- the components and the materials used may be any according to the requirements and the state of the art.
Description
- The present invention relates to a metering pump.
- Volumetric metering pumps are currently known which comprise, within a head to be interposed between segments of piping of a hydraulic circuit, an impeller provided with vanes, which rotates due to the flowing fluid and which, by virtue of means for the transmission and kinematic reduction of the rotary motion and means for converting the rotary motion into reciprocating rectilinear motion, mechanically moves associated means for drawing and pumping the liquid to be metered.
- These means for drawing and pumping the liquid to be metered are arranged inside a substantially rigid container vessel for said liquid, which is fixed to the head, and comprise an injection piston which is moved by the motion conversion means so as to enter and exit, with its lower end, a metering chamber.
- Said metering chamber, on the opposite side with respect to the entry side for the injection piston, is closed by a flow control element, which is pushed closed by elastic means; the chamber is connected to the inside of the container on the side of the injection piston and to a rigid duct for the rise of the metered liquid toward the head on the side of the flow control element.
- The metering chamber is generally located proximate to the bottom of the container vessel of the liquid to be metered, so as to utilize as much as possible the liquid contained in said vessel and accordingly the rigid riser duct extends from the bottom of the container vessel up to the head.
- Although this metering pump is widespread and widely appreciated, it has limitations.
- A first limitation is inconvenience during replacement of the empty container with another new one; the container is in fact replaced without removing the head, which is installed on a line of a hydraulic system, often in a confined space and in a position that is awkward to access on the part of a user.
- Removal of the empty container requires it to be lowered with respect to the head to which it is fixed initially until the riser duct, which as mentioned is rigid, that protrudes from the head is extracted completely.
- This operation can be awkward and in any case causes dripping of the liquid to be metered, which remains to wet the surfaces of the riser duct.
- Furthermore, the liquid to be metered that remains on the surfaces of the duct constitutes a loss of useful material.
-
EP1832746 discloses a dosage pump comprising a hollow body which is adapted to be interposed between pipe portions of a hydraulic circuit and is provided internally with a rotating element provided with vanes, which rotates as a consequence of the flowing fluid and is associated with means for transmission and speed reduction and with means for converting the rotary motion into reciprocating rectilinear motion, which in turn are connected to means for drawing and pumping the liquid to be dosed, the latter means being provided, inside a container for the liquid which is fixed to the hollow body, by an injection stem which is moved by the motion conversion means so as to enter and exit with its end from a dosage chamber, which on the opposite side with respect to the entry side for the injection stem is closed by a flow control element, which is pushed closed by elastic means; the chamber is connected to the inside of the container on the side of the stem and to a channel for connection to a tube for the rise of the dosed liquid on the side of the flow control element toward the hollow body. The chamber and the connection channel are formed in a single body, inside which the flow control element with its elastic closure means is also fitted. -
US 3 549 048 A discloses a fluid pressure operated chemical proportionating apparatus comprising a combination of features as set forth in the pre-characterizing portion of the appended claim 1. -
IT PD20 110 240 A1 - The aim of the present invention is to provide a metering pump that is capable of obviating the cited limitations of metering pumps of the known type.
- Within the scope of this aim, an object of the invention is to provide a metering pump the container of which is simpler to disengage and reengage.
- Another object of the invention is to provide a metering pump that is capable of better utilizing the liquid to be metered that is present in the container, minimizing losses and waste.
- A further object of the invention is to provide a metering pump that is simple to handle, like known metering pumps, even without particular prior teachings.
- This aim, as well as these and other objects that will become better apparent hereinafter, are achieved by a metering pump according to claim 1.
- Further characteristics and advantages of the invention will become better apparent from the description a preferred but not exclusive embodiment of the metering pump according to the invention, illustrated by way of nonlimiting example in the accompanying drawings, wherein:
-
Figure 1 is a perspective view of a metering pump according to the invention; -
Figure 2 is a sectional side view of the pump ofFigure 1 ; -
Figure 3 is a perspective cutout view of a portion of the pump according to the invention. - With reference to the figures, a metering pump according to the invention is designated generally by the
reference numeral 10. - The
metering pump 10 comprises, inside a head 11: - an impeller provided with
vanes 12, - means 13 for the transmission and kinematic reduction of the rotary motion of the
impeller 12, - means 14 for converting the rotary motion into reciprocating rectilinear motion,
- pumping means 15 for a liquid to be metered, which are moved mechanically by the
means 14 for converting the rotary motion into reciprocating rectilinear motion. - A
rigid container 16 for a liquid to be metered is fixed to thehead 11 by means of reversible bayonet coupling means 45 described hereinafter, the pumping means 15 being provided with anintake duct 17 that is extended so as to draw from therigid container 16, as clearly visible inFigure 2 , and in particular from thebottom 18 of therigid container 16. - The reversible bayonet coupling means 45 comprise a
collar 46 of therigid container 16, which is provided with externalradial protrusions 47 which are contoured for bayonet coupling incorresponding recesses 48 formed within acorresponding coupling portion 49 of thehead 11. - The
intake duct 17 comprises afirst segment 19, which is integral with the pumping means 15 and is extended, within thehead 11, between the pumping means 15 and theinlet 20 of therigid container 16, and asecond segment 21, which is extended from the end of thefirst portion 19 to thebottom 18 of therigid container 16. - The
second segment 21 is constituted by a flexible tube. - By virtue of the
first segment 19, which remains in thehead 11, and of said flexible tube, which has such a length as to draw from thebottom 18 of therigid container 16, the operations for removing an empty container and fitting the newly filled container are simpler and more rapid, since the flexible tube can be extracted more easily than a rigid duct as in metering pumps of the known type. - Furthermore, these operations for removal and fitting, by virtue of the flexible tube, can be performed in more confined spaces than those necessary with known metering pumps, since it is sufficient to lower the
container 16 from thehead 11 enough to allow to extract the flexible tube, i.e., thesecond segment 21 of theintake duct 17, from thecontainer 16. - Furthermore, the flexible tube retains on its surfaces less liquid to be metered, causing a lower loss of said liquid upon its extraction from a container to be replaced.
- Moreover, the
rigid container 16 is more comfortable to hold with a grip that is safe and useful to induce thereon a rotation for coupling or uncoupling with respect to thehead 11, differently from known metering pumps with non-rigid bag-like containers, which are more difficult to hold and therefore turn in order to induce their bayonet coupling or uncoupling with respect to the head; a safe grip of the container is in fact fundamental in all situations in which themetering pump 10 is mounted in a space that is so tight as to prevent the hand of the user from gripping directly the bayonet coupling means and it is therefore fundamental for the container to be completely and easily rotatable by holding it by its bottom, which is not feasible with a container of the bag-like type or lacking rigidity in general. - In the embodiment of the invention described herein, by way of nonlimiting example thereof, the pumping means 15 comprise an
injection piston 22 which is moved by the motion conversion means 14 so as to enter and exit alternately, with its lower end, ametering chamber 23. - The
metering chamber 23 is provided inside acontoured body 24, which is fixed inside thehead 11 and on which contouredbody 24 there is also anintake channel 25 and adischarge channel 26 for the liquid to be metered. - Inside the
contoured body 24, below themetering chamber 23, there are one-way valve means 27, which are adapted to prevent the return of liquid to be metered toward thechamber 23. - The valve means 27 comprise a first
flow control element 28, with a complementarycontrast pusher spring 29, for direct closure of thechamber 23, and a second lateralflow control element 30, with a correspondingcontrast pusher spring 31, arranged in thedischarge channel 26. - The
first segment 19 of theintake duct 17, inside which theintake channel 25 is formed, extends from thecontoured body 24. - The
means 13 for transmission and kinematic reduction of rotary motion comprise a series ofreduction gears - A
shaft 36 extends from thelast gear 35 and is designed to transfer the torque from themeans 13 for transmission and kinematic reduction of the rotary motion to themeans 14 for converting the rotary motion into reciprocating rectilinear motion. - The
means 14 for converting rotary motion into reciprocating rectilinear motion comprise agear 37 which is keyed onto theshaft 36 and apinion 38 which is matched with thefirst gear 37 and is integral with asecond shaft 39 which supports aneccentric disk 40; theeccentric disk 40 is arranged so as to rotate within aslot 41, the height of which corresponds to the diameter of theeccentric disk 40 and which is formed on thehead 42 of theinjection piston 22 of the pumping means 15. - In practice it has been found that the invention achieves the intended aim and objects.
- In particular, the invention provides a metering pump the container of which is simpler to uncouple and recouple in order to manage refilling.
- Moreover, the invention provides a metering pump that is capable of better utilizing the liquid to be metered that is present in the container, minimizing losses and waste.
- Moreover, the invention provides a metering pump that is simple to handle, like known metering pumps, even without particular prior teachings.
- The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims.
- In practice, the components and the materials used, so long as they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to the requirements and the state of the art.
- Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.
Claims (8)
- A metering pump (10), comprising, inside a head (11):- an impeller provided with vanes (12),- means (13) for the transmission and kinematic reduction of the rotary motion of the impeller (12),- means (14) for converting the rotary motion into reciprocating rectilinear motion,- means (15) for pumping a liquid to be metered, which are moved mechanically by said means (14) for converting rotary motion into reciprocating rectilinear motion,a rigid container (16) for a liquid to be metered being fixed to said head (11), said pumping means (15) being provided with an intake duct (17) that is extended so as to draw from said rigid container (16),said intake duct (17) comprising a first segment (19) that is integral with the pumping means (15) and is extended between said pumping means (15) and the inlet (20) of said rigid container (16), and a second segment (21) that extends from the end of said first segment (19) to the bottom of said rigid container (18), said second segment (21) being constituted by a flexible tube,
characterized in thatsaid rigid container (16) is fixed to said head (11) with reversible bayonet coupling means (45), andsaid first segment (19), including said end from which said flexible tube (21) extends, remains in said head (11). - The metering pump according to claim 1, characterized in that said reversible bayonet coupling means (45) comprise a collar (46) of the rigid container (16) with external radial protrusions (47) which are contoured for bayonet coupling in corresponding recesses (48) formed within a corresponding coupling portion (49) of said head (11).
- The metering pump according to one or more of the preceding claims, characterized in that said pumping means (15) comprise an injection piston (22) that is moved by the means (14) for converting motion so as enter and exit alternately, with its lower end, a metering chamber (23).
- The metering pump according to one or more of the preceding claims, characterized in that said metering chamber (23) is provided inside a contoured body (24), which is fixed inside the head (11), an intake channel (25) and a discharge channel (26) for the liquid to be metered being also formed on said contoured body (24).
- The metering pump according to claim 4, characterized in that inside the contoured body (24), below the metering chamber (23), there are one-way valve means (27), which are adapted to prevent the return of liquid to be metered toward the chamber (23).
- The metering pump according to claim 5, characterized in that said first segment (19) of the intake duct (17) extends from said contoured body (24).
- The metering pump according to one or more of the preceding claims, characterized in that said means for transmission and kinematic reduction of rotary motion (13) comprise a series of reduction gears (32, 33, 34, 35), a shaft (36) extending from the last gear (35) and being designed to transfer the torque from the means (13) for transmission and kinematic reduction of rotary motion to the means (14) for converting rotary motion into reciprocating rectilinear motion.
- The metering pump according to claim 7, characterized in that said means (14) for converting rotary motion into reciprocating rectilinear motion comprise a gear (37) that is keyed on the shaft (36) and a pinion (38) that meshes with the first gear (37) and is integral with a second shaft (39) which supports an eccentric disk (40), said eccentric disk (40) being arranged so as to rotate within a slot (41), the height of which corresponds to the diameter of the eccentric disk (40), formed on the head (42) of the injection piston (22) of the pumping means (15).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUA20166537 | 2016-03-03 |
Publications (2)
Publication Number | Publication Date |
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EP3214307A1 EP3214307A1 (en) | 2017-09-06 |
EP3214307B1 true EP3214307B1 (en) | 2022-01-05 |
Family
ID=58360813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17158879.1A Active EP3214307B1 (en) | 2016-03-03 | 2017-03-02 | Metering pump |
Country Status (1)
Country | Link |
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EP (1) | EP3214307B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3992586B1 (en) * | 2020-10-27 | 2024-03-20 | Acqua Brevetti S.R.L. | Connector for filtering devices for plumbing systems |
EP4091695A1 (en) * | 2021-05-20 | 2022-11-23 | Acqua Brevetti S.R.L. | Device for treating water in a hydraulic system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3549048A (en) * | 1968-07-25 | 1970-12-22 | Charles R Goodman | Chemical proportionating apparatus |
ITPD20110240A1 (en) * | 2011-07-14 | 2013-01-15 | Acqua Brevetti 95 S R L | VOLUME PUMP DOSING DEVICE |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10139573A1 (en) * | 2001-03-10 | 2002-09-19 | Alfred Von Schuckmann | Hand lever operated pump |
US8449267B2 (en) * | 2004-09-29 | 2013-05-28 | Shurflo, Llc | Pump assembly and fluid metering unit |
ITPD20060025U1 (en) * | 2006-02-16 | 2007-08-17 | Giovanni Rampazzo | DOSING PUMP STRUCTURE |
-
2017
- 2017-03-02 EP EP17158879.1A patent/EP3214307B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3549048A (en) * | 1968-07-25 | 1970-12-22 | Charles R Goodman | Chemical proportionating apparatus |
ITPD20110240A1 (en) * | 2011-07-14 | 2013-01-15 | Acqua Brevetti 95 S R L | VOLUME PUMP DOSING DEVICE |
Also Published As
Publication number | Publication date |
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EP3214307A1 (en) | 2017-09-06 |
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