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1. (WO2017064197) HYDRAULIC MACHINE AND REVERSIBLE METERING PUMP EQUIPPED WITH SUCH A MACHINE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2017/064197 International Application No.: PCT/EP2016/074611
Publication Date: 20.04.2017 International Filing Date: 13.10.2016
IPC:
F04B 5/02 (2006.01) ,F04B 7/00 (2006.01) ,F04B 13/02 (2006.01) ,F04B 15/04 (2006.01) ,F04B 53/12 (2006.01) ,F04B 53/10 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
5
Machines or pumps with differential-surface pistons
02
with double-acting pistons
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
7
Piston machines or pumps characterised by having positively-driven valving
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
13
Pumps specially modified to deliver fixed or variable measured quantities
02
of two or more fluids at the same time
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
15
Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
04
the fluids being hot or corrosive
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53
Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
10
Valves; Arrangement of valves
12
arranged in or on pistons
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53
Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
10
Valves; Arrangement of valves
Applicants: DOSATRON INTERNATIONAL[FR/FR]; Rue Pascal 33370 Tresses, FR
Inventors: FURET, Sébastien; FR
LAMBINET, Sandrine; FR
VACHER, David; FR
LAATIAOUI, Najib; FR
Agent: SAGNIEZ, Laure; FR
MOUGET-GONIOT, Claire; FR
Priority Data:
15 5973113.10.2015FR
Title (EN) HYDRAULIC MACHINE AND REVERSIBLE METERING PUMP EQUIPPED WITH SUCH A MACHINE
(FR) MACHINE HYDRAULIQUE ET POMPE DOSEUSE REVERSIBLE EQUIPEE D'UNE TELLE MACHINE
Abstract:
(EN) The invention concerns a hydraulic machine comprising: a casing (14); a differential piston (1) having an upper ring (23) and a lower base (27), suitable for sliding in reciprocating movement respectively in the casing and in a cylindrical housing (22) inside the envelope, the piston separating two chambers (16, 17) of the casing; hydraulic switching means for supplying liquid to and discharging liquid from the chambers separated by the piston, said switching means being controlled by the movements of the piston and comprising at least one rod (4) acting on a distribution member (12), said distribution member comprising an upper valve (3) cooperating with a first seat (25) provided in the upper ring (23) of the piston and at least one lower valve (9) cooperating with a second seat (26) provided in the lower base (27) of the piston; and triggering means capable of causing, at the end of the stroke of the piston, a sudden change in the position of the switching means, under the action of an elastic means (E), to reverse the stroke. The lower and upper valve seats each respectively accept an upper frustoconical portion (25a; 26a) and a lower frustoconical portion (25c; 26c) tapering in opposite directions to each other. The invention also concerns a reversible metering pump comprising such a hydraulic machine.
(FR) L'invention concerne une machine hydraulique comprenant: une enveloppe (14); un piston différentiel (1) présentant une couronne supérieure (23) ainsi qu'une base inférieure (27), propre à coulisser en mouvement alternatif respectivement dans l'enveloppe et dans un logement cylindrique (22) intérieur à l'enveloppe, le piston séparant deux chambres (16, 17) de l'enveloppe; des moyens de commutation hydraulique pour l'alimentation et l'évacuation en liquide des chambres séparées par le piston, ces moyens de commutation étant commandés par les déplacements du piston et comportent au moins une bielle (4) agissant sur un organe de distribution (12), ledit organe de distribution comportant un clapet supérieur (3) coopérant avec un premier siège (25) pratiqué dans la couronne supérieure (23) du piston et au moins un clapet inférieur (9) coopérant avec un second siège (26) pratiqué dans la base inférieure (27) du piston; et des moyens de déclenchement propres à provoquer, en fin de course du piston, un changement brusque de la position des moyens de commutation, sous l'action d'un moyen élastique (E), pour l'inversion de la course. Les sièges de clapet inférieur et supérieur admettent respectivement chacun une portion tronconique supérieure (25a; 26a) et une portion tronconique inférieure (25c; 26c) de conicité opposée entre elles. L'invention concerne également une pompe doseuse réversible comportant une telle machine hydraulique.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)