EP3440353A1 - Pompe a dosage proportionnel, procede de montage et de demontage d'une telle pompe - Google Patents
Pompe a dosage proportionnel, procede de montage et de demontage d'une telle pompeInfo
- Publication number
- EP3440353A1 EP3440353A1 EP17715176.8A EP17715176A EP3440353A1 EP 3440353 A1 EP3440353 A1 EP 3440353A1 EP 17715176 A EP17715176 A EP 17715176A EP 3440353 A1 EP3440353 A1 EP 3440353A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- access
- proportional
- hydraulic machine
- ring
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- 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
- F04B9/107—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 rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
-
- 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
- F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time
Definitions
- the invention relates to a proportional proportioning pump of the type comprising a hydraulic machine fed with a main liquid and with a secondary liquid, and a metering mechanism of the secondary liquid.
- the invention also relates to a method of mounting and dismounting the metering mechanism with the hydraulic machine.
- this inner cavity is a chamber for mixing the main liquid with the secondary liquid upstream of the output of the hydraulic machine.
- This inner cavity is also traversed by a plunger actuated by a member of the hydraulic machine capable of reciprocating, said movement being communicated to the plunger and causing the aspiration of the secondary liquid through the metering mechanism, into the inner cavity if the latter acts as a mixing chamber.
- this type of assembly can however be subject to handling errors or unintentional unscrewing.
- This type of fault then has a disadvantage for the user, which results in a loss of the main liquid (usually water).
- This type of fault also presents a significant risk of leakage of the secondary liquid when the unscrewing is partial, which can cause pollution of the site hosting the pump (the secondary liquid is generally a chemical such as fertilizer for the pumps). plantations or a medicine for animals).
- the object of the invention is to overcome all or some of the disadvantages mentioned above by proposing a proportional dosing pump comprising a metering mechanism and a hydraulic machine, and a method of assembly and disassembly, to prevent unintentional disconnection between the dosing mechanism nozzle and the hydraulic machine.
- the invention relates to a proportional dosing pump comprising a hydraulic machine having an inlet and an outlet, a metering mechanism provided with a suction nozzle provided with a suction valve and communicating at one of its ends with a tubing for access to an interior cavity at the pump and at the other end thereof with a reservoir of product to be dosed, the hydraulic machine extending along a longitudinal axis and enclosing a member adapted to reciprocate, supplying the pump with liquid input triggering the reciprocating movement of said member, which movement alternately causes aspiration through the nozzle into the interior cavity with opening of the suction valve when the member moves away from the nozzle and then expulsion at the outlet of the pump with closure of the suction valve when the member approaches the nozzle, characterized in that the pump further comprises means for attaching the nozzle to the access tubing to the internal cavity of the hydraulic machine, said means comprising: a fixing ring having a first and a second end; and rotatably mounted around one of the ends of the nozzle,
- the first end of said ring being pressed towards the dosing mechanism against a shoulder formed on said access tubing by means of a spring, the fixing ring and the tubing of access to the internal cavity of the hydraulic machine being adapted to cooperate in a screwing at the end of which the second end of the locking ring is secured in rotation by complementarity of shape with the second end of the locking ring. fixing, so as to lock the unscrewing of the fixing ring.
- Screwing is preferably less than half a turn.
- the fixing ring may comprise at its second end and at its inner circumferential surface a male multi-start thread consisting of two to eight threads extending in the same helix, the access tubing to the inner cavity at the hydraulic machine having a complementary female thread.
- a multi-start male thread the latter may consist of four threads extending over a length corresponding to an eighth turn screwing.
- the access tubing to the internal cavity of the hydraulic machine may comprise a multi-start male thread consisting of two to eight threads extending in the same helix, the fixing ring being provided at its second end and at its end. inner circumferential surface of a complementary female thread.
- the multi-outlet male thread of the tubing may then consist of four threads extending over a length corresponding to an eighth-turn screwing.
- the access tubing to the internal cavity of the hydraulic machine and the fixing ring can cooperate in screwing in a bayonet-type configuration, one of the tubes for access to the inner cavity and fixing ring being provided with least one lug adapted to lock in a groove formed on the other of the tubing for access to the inner cavity and fixing ring.
- the second end of the locking ring comprises tabs adapted to occupy the space between portions of increasing height provided on the second end of the fixing ring, said threads being carried by said portions.
- the constituent elements of the pump are manufactured by injection of thermoplastic plastic materials selected from the list defined by polyamides, polyvinylidene fluorides, high density polyethylenes, polypropylenes, whether or not charged, polyformaldehydes.
- the subject of the invention is also a first method of mounting a proportional dosing pump according to any one of the embodiments of the invention, characterized in that the fixing ring is screwed with the tubing for access to the internal cavity of the hydraulic machine, until the second end of the locking ring is secured in rotation with the second end of the complementary fit ring, so as to lock the unscrewing of the fixing ring.
- the screwing is less than half a turn.
- the invention also relates to a first method of disassembly of a proportional dosing pump according to any one of the embodiments of the invention, characterized in that the locking ring is translated so as to distance the first end of said ring of the shoulder against which it was in abutment, and then unscrewing of the ring fixing the access tubing to the inner cavity of the hydraulic machine.
- the unscrewing is less than half a turn.
- FIG. 1 is a schematic representation of a proportional proportional pump Using a first type of hydraulic machine and according to one embodiment of the invention
- FIG. 2 is a schematic representation of a proportional metering pump using a second type of hydraulic machine and according to an embodiment of the invention
- FIG. 3 is a representation of a detailed view of the invention in section along a plane perpendicular to the axis of the pump.
- FIGURES 4 and 5 are representations of a detailed view of the invention in sections along the longitudinal axis of the pump.
- FIGURES 6 and 7 are perspective views of the invention.
- variants of the invention 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 characteristics), 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 comprises at least one characteristic, preferably functional without structural details, or with only a part of the structural details if this part alone is sufficient to confer a technical advantage or to differentiate the invention from the state of the prior art .
- Figures 1 and 2 each show an embodiment of a proportional dosing pump. It comprises a hydraulic machine 4 extending along a longitudinal axis 9, and having an inlet 40, an outlet 41, an access pipe to an inner cavity 43, as well as a nozzle of suction 75.
- This suction nozzle is provided with a suction valve 80 communicating at one of its ends with a cavity inside the pump (not shown in the figure) and at the other end with a product container to be sucked (not shown in the figure).
- the hydraulic machine is provided with an organ capable of performing an alternating movement, the supply of the pump with liquid input triggering the reciprocating movement of the member, which movement alternately causes aspiration through the nozzle into the inner cavity with opening of the suction valve 80 when the member moves away from the nozzle 75 and an expulsion at the outlet 41 of the pump with closure of the first suction valve when the member approaches the nozzle .
- the hydraulic machine may be of the type described in the document
- This hydraulic machine comprises an envelope comprising a body and a cover, a means of separation suitable for reciprocating the envelope between the body and the cover, this separating means defining two chambers.
- the hydraulic machine also comprises hydraulic switching means for the supply of liquid and the evacuation of the aforementioned chambers. These switching means comprise a distribution member that can take two stable positions and controlled by the movements of the separation means.
- the body of the envelope also contains a compartment connected to a liquid inlet under pressure and in which are housed the switching means, as well as triggering means comprising a pusher connected to the separating means, suitable for causing, in 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 spool pressed against a fixed flat plate relative to the body of the casing, the dispensing spool being able to slide sealingly, without a seal, against the plate which has orifices connected respectively to the chambers. of the casing and at an outlet of the liquid.
- the drawer is then designed to, depending on its position, close some of the orifices or put them in communication with the arrival of fluid or with the exhaust.
- the hydraulic machine can also be of the type described in EPI 971774 A1 and in FIG.
- the hydraulic machine comprises a casing, a piston adapted to reciprocally slide in the casing, the piston separating the casing in two chambers, hydraulic switching means for the supply of liquid and the evacuation of the casings. rooms separated by the piston.
- These switching means are controlled by the movements of the piston and comprise at least one rod acting on a dispensing member that can take two stable positions.
- Triggering means is further provided comprising a pusher suitable for causing, at the end of the piston stroke, a sudden change in the position of the switching means, under the action of an elastic means, for the inversion of the race.
- the elastic means is integral at each of its ends with a hinge member received respectively in a housing provided on the rod and on another moving part of the hydraulic machine, each housing being open in a substantially opposite direction. in the sense of the force exerted by the elastic means in the housing, so that each hinge member can be extracted from its open housing against said force.
- the proportional dosing pump also comprises a metering mechanism 7 for adjusting the volume drawn into the nozzle 75.
- This mechanism is described in FIGS. 1 and 2 and involves an adjusting nut 70 which drives the body of the metering device 73 into its jacket. 70.
- the plunger 71 and the seal 72 dosing leave the body of the proportioner 73, the dosing stroke is more or less long.
- the volume aspirated is more or less important.
- the dosage is therefore more or less strong.
- the pump further comprises means for attaching the nozzle 75 to the access manifold 43 to the interior cavity of the hydraulic machine.
- These means comprise a fixing ring 2 of substantially annular shape, extending between a first 20 and a second 21 end.
- This fixing ring is rotatably mounted around the end of the nozzle 75 intended to be secured to the tubing 43 of the hydraulic machine 4.
- This ring may for example be mounted on the nozzle 75, with an internal diameter. reduced at its end 20 so that said end comes into abutment against a shoulder provided on the end of the nozzle 75. In this way, the nozzle can not be disengaged from the fixing ring 2 when the nozzle is attached to the access tubing to the inner cavity.
- These means also comprise a locking ring 1 of substantially annular shape, extending between a first 10 and a second end.
- This fixing ring is mounted fixed in rotation relative to the hydraulic machine and free in translation along the access pipe to the mixing chamber.
- This assembly can be achieved by means of ribs and complementary grooves formed respectively on the surface of the tubing and on the circumferential surface inside the locking ring. According to one embodiment, it is therefore possible to provide at least one groove 45 on the outer circumferential surface of the tubing 43, able to accommodate a slider provided on the inner circumferential surface of the locking ring 1.
- Spring means 3 maintain, by their restoring force, the first end of said plated ring against a shoulder 430 formed on said pipe and in the direction of the metering mechanism 7 and the nozzle 75.
- the means 3 may be, for example, a spring of metal coil or thermoplastic blade type.
- Screwing is understood to mean a displacement in a Euclidean affine space which is the commutative compound of a rotation and of a translation according to a vector directing the axis of rotation (in this case the axis 9).
- the assembly of the fixing ring and the tubing must be understood in the broad sense and must not be limited to the only threading cooperation between two parts.
- the screwing is less than half a turn, so that the connection between the fixing ring and the hydraulic machine is done quickly.
- the second end 11 of the locking ring is secured to the second end 21 of the complementary fit ring.
- the surfaces of the ends 11 and 21 of the rings are interleaved so as to prevent the rotation of one relative to the other. In this way, the unscrewing of the fixing ring is locked.
- the fixing ring comprises at its second end 21 and at its inner circumferential surface a multi-start male thread consisting of two to eight threads extending along the same helix.
- the access tubing to the interior cavity of the hydraulic machine therefore comprises a complementary female thread 44 machined on its outer circumferential surface.
- the multi-start male thread consists of four threads extending over a length corresponding to an eighth turn screwing.
- the thread can be machined just as it can be injection molded.
- the tubing 43 for access to the internal cavity of the hydraulic machine comprises on its outer circumferential surface a multi-start male thread consisting of two to eight threads extending along the same helix.
- the fixing ring is then provided, in turn, at its second end 21 and at its inner circumferential surface of a complementary female thread.
- the multi-start male thread consists of four threads extending over a length corresponding to an eighth turn screwing.
- the access tubing to the internal cavity of the hydraulic machine and the fixing ring cooperate in screwing in a bayonet type configuration.
- the access tubing to the inner cavity is provided on its outer circumferential surface with at least one lug adapted to lock in a groove formed on the inner circumferential surface fixing ring.
- the fixing ring which is provided on its inner circumferential surface with at least one lug able to lock in a groove formed on the outer circumferential surface of the inlet pipe to the mixing chamber.
- the second end 11 of the locking ring comprises tabs 12 able to occupy the space between portions 23 formed on the second end 21 of the fixing ring, carrying the threads 22.
- the portions 23 are of increasing height, so that the tongues 12 follow the increasing peak of these portions as a ramp during the screwing operation and push back the locking ring, until said tongues fall into the groove. the space between the portions 23 under the action of the restoring force of the spring, once the end of the screwing is reached.
- the constituent elements are preferably manufactured by injection of thermoplastic plastic materials selected from the list defined by polyamides, polyvinylidene fluorides, high density polyethylenes, polypro-pylenes charged or no, polyformaldehydes.
- thermoplastic plastic materials selected from the list defined by polyamides, polyvinylidene fluorides, high density polyethylenes, polypro-pylenes charged or no, polyformaldehydes.
- sealing means 6 are interposed between the outer circumferential surface of the nozzle 75 and the inner circumferential surface of the tubing 43 to access the mixing chamber.
- the second end 11 of the locking ring is made integral in rotation with the second end 21 of the complementary fit ring.
- any type of complementarity can be used such as the tabs 12 complementary spaces between the threads 22. These complementarities are carried for one by the locking ring and the other by the fixing ring.
- the action of the restoring force of the spring subjected to compression during screwing allows one of the complementary shapes to overcome the obstacle during the screwing and to insert into the corresponding complementary shape at the end of the screwing.
- the unscrewing of the fixing ring is made impossible.
- the locking ring is translated so as to move the first end of said ring away from the shoulder 430 against which she was in support. In this way, the complementary forms are disengaged. Then the fastening ring is unscrewed from the access pipe 43.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Jet Pumps And Other Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17715176T PL3440353T3 (pl) | 2016-04-07 | 2017-04-06 | Pompa dozowania proporcjonalnego, sposób montażu oraz demontażu takiej pompy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1653055A FR3049992B1 (fr) | 2016-04-07 | 2016-04-07 | Pompe a dosage proportionnel, procede de montage et de demontage d'une telle pompe |
PCT/EP2017/058249 WO2017174719A1 (fr) | 2016-04-07 | 2017-04-06 | Pompe a dosage proportionnel, procede de montage et de demontage d'une telle pompe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3440353A1 true EP3440353A1 (fr) | 2019-02-13 |
EP3440353B1 EP3440353B1 (fr) | 2020-02-12 |
Family
ID=56008803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17715176.8A Active EP3440353B1 (fr) | 2016-04-07 | 2017-04-06 | Pompe a dosage proportionnel, procede de montage et de demontage d'une telle pompe |
Country Status (19)
Country | Link |
---|---|
US (1) | US10724517B2 (fr) |
EP (1) | EP3440353B1 (fr) |
JP (1) | JP6946333B2 (fr) |
KR (1) | KR102305594B1 (fr) |
CN (1) | CN109072890B (fr) |
AR (1) | AR108190A1 (fr) |
AU (1) | AU2017248041B2 (fr) |
CA (1) | CA3019249C (fr) |
DK (1) | DK3440353T3 (fr) |
EA (1) | EA034732B1 (fr) |
ES (1) | ES2779012T3 (fr) |
FR (1) | FR3049992B1 (fr) |
IL (1) | IL261993B (fr) |
MX (1) | MX2018012203A (fr) |
PL (1) | PL3440353T3 (fr) |
PT (1) | PT3440353T (fr) |
SG (1) | SG11201808417SA (fr) |
WO (1) | WO2017174719A1 (fr) |
ZA (1) | ZA201806635B (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2581164A (en) * | 2019-02-06 | 2020-08-12 | Mhwirth Gmbh | Fluid pump, pump assembly and method of pumping fluid |
USD933714S1 (en) * | 2019-05-30 | 2021-10-19 | Mixtron S.R.L. | Metering pump |
FR3120402B1 (fr) | 2021-03-02 | 2023-04-14 | Dosatron International | Procede et pompe de dosage proportionnel a faible debit |
USD1006833S1 (en) * | 2021-07-08 | 2023-12-05 | Mixtron S.R.L. | Pump for liquids |
USD1009082S1 (en) * | 2021-09-30 | 2023-12-26 | Viscotec Pumpen- U. Dosiertechnik Gmbh | Metering pump |
FR3139604B1 (fr) * | 2022-09-13 | 2024-08-02 | Idromix | Mécanisme de dosage d’une pompe – Système de verrouillage et amélioration de la précision du réglage |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2681646B1 (fr) * | 1991-09-19 | 1995-05-19 | 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. |
US6183212B1 (en) * | 1999-02-17 | 2001-02-06 | Stanadyne Automotive Corp. | Snap-in connection for pumping plunger sliding shoes |
FR2896279B1 (fr) | 2006-01-13 | 2008-02-29 | Dosatron International | Machine hydraulique, en particulier moteur hydraulique, et doseur comportant un tel moteur. |
FR2896281B1 (fr) * | 2006-01-13 | 2008-02-29 | Dosatron International | Machine hydraulique, en particulier moteur hydraulique, a mouvement alternatif. |
SE531679C2 (sv) * | 2006-09-08 | 2009-06-30 | Norden Machinery Ab | Doseringspump |
DE102008062552A1 (de) * | 2008-12-16 | 2010-06-17 | Mahle International Gmbh | Kraftstofffilter |
DE102009054938A1 (de) * | 2009-12-18 | 2011-06-22 | Robert Bosch GmbH, 70469 | Kraftstoffhochdruckpumpe |
FR2967218B1 (fr) * | 2010-11-08 | 2016-09-02 | Dosatron International | Doseur proportionnel d'un liquide auxiliaire dans un liquide principal. |
USD864252S1 (en) * | 2017-08-16 | 2019-10-22 | Dosatron International | Metering pump |
-
2016
- 2016-04-07 FR FR1653055A patent/FR3049992B1/fr not_active Expired - Fee Related
-
2017
- 2017-04-05 AR ARP170100885A patent/AR108190A1/es active IP Right Grant
- 2017-04-06 JP JP2018552733A patent/JP6946333B2/ja active Active
- 2017-04-06 EA EA201892263A patent/EA034732B1/ru not_active IP Right Cessation
- 2017-04-06 CA CA3019249A patent/CA3019249C/fr active Active
- 2017-04-06 PT PT177151768T patent/PT3440353T/pt unknown
- 2017-04-06 SG SG11201808417SA patent/SG11201808417SA/en unknown
- 2017-04-06 DK DK17715176.8T patent/DK3440353T3/da active
- 2017-04-06 EP EP17715176.8A patent/EP3440353B1/fr active Active
- 2017-04-06 ES ES17715176T patent/ES2779012T3/es active Active
- 2017-04-06 CN CN201780022478.6A patent/CN109072890B/zh active Active
- 2017-04-06 US US16/091,617 patent/US10724517B2/en active Active
- 2017-04-06 PL PL17715176T patent/PL3440353T3/pl unknown
- 2017-04-06 MX MX2018012203A patent/MX2018012203A/es unknown
- 2017-04-06 WO PCT/EP2017/058249 patent/WO2017174719A1/fr active Application Filing
- 2017-04-06 AU AU2017248041A patent/AU2017248041B2/en active Active
- 2017-04-06 KR KR1020187029793A patent/KR102305594B1/ko active Active
-
2018
- 2018-09-27 IL IL261993A patent/IL261993B/en unknown
- 2018-10-05 ZA ZA2018/06635A patent/ZA201806635B/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN109072890A (zh) | 2018-12-21 |
BR112018070360A2 (pt) | 2019-01-29 |
EA201892263A1 (ru) | 2019-03-29 |
EP3440353B1 (fr) | 2020-02-12 |
FR3049992B1 (fr) | 2018-04-20 |
AU2017248041A1 (en) | 2018-11-15 |
CN109072890B (zh) | 2020-03-24 |
DK3440353T3 (da) | 2020-05-18 |
NZ746661A (en) | 2024-01-26 |
JP6946333B2 (ja) | 2021-10-06 |
US10724517B2 (en) | 2020-07-28 |
AR108190A1 (es) | 2018-07-25 |
CA3019249A1 (fr) | 2017-10-12 |
SG11201808417SA (en) | 2018-10-30 |
JP2019513934A (ja) | 2019-05-30 |
US20190120226A1 (en) | 2019-04-25 |
IL261993A (en) | 2018-10-31 |
FR3049992A1 (fr) | 2017-10-13 |
IL261993B (en) | 2021-09-30 |
AU2017248041B2 (en) | 2022-06-02 |
CA3019249C (fr) | 2023-07-04 |
ZA201806635B (en) | 2020-07-29 |
ES2779012T3 (es) | 2020-08-13 |
KR20180127409A (ko) | 2018-11-28 |
MX2018012203A (es) | 2018-12-10 |
PL3440353T3 (pl) | 2020-07-27 |
PT3440353T (pt) | 2020-05-18 |
KR102305594B1 (ko) | 2021-09-24 |
EA034732B1 (ru) | 2020-03-13 |
WO2017174719A1 (fr) | 2017-10-12 |
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