EP2394056A1 - Pompe a membrane elastique a commande hydraulique - Google Patents
Pompe a membrane elastique a commande hydrauliqueInfo
- Publication number
- EP2394056A1 EP2394056A1 EP10707069A EP10707069A EP2394056A1 EP 2394056 A1 EP2394056 A1 EP 2394056A1 EP 10707069 A EP10707069 A EP 10707069A EP 10707069 A EP10707069 A EP 10707069A EP 2394056 A1 EP2394056 A1 EP 2394056A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- pump
- valve
- volume
- pump according
- 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
- 239000012528 membrane Substances 0.000 title claims abstract description 19
- 238000005086 pumping Methods 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims description 14
- 238000000638 solvent extraction Methods 0.000 claims description 7
- 238000007872 degassing Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000009795 derivation Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 17
- 239000007788 liquid Substances 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0081—Special features systems, control, safety measures
- F04B43/009—Special features systems, control, safety measures leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid
-
- 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
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
- F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
Definitions
- the present invention relates to hydraulically controlled diaphragm pumps and more particularly to the device for maintaining a suitable volume of liquid in the intermediate chamber between the piston and the diaphragm.
- the liquid present in the intermediate chamber decreases in volume for three main reasons: the existence of leaks, the existence of dissolved gases which affect the performance of the pump and the presence of a safety valve which allows a fluid evacuation in case of overpressure.
- the known recharge devices are of two main types: automatic devices and controlled devices.
- the automatic devices consist of a single calibrated valve, suction s Opening the reservoir to the intermediate chamber from a certain value of depression.
- the controlled devices comprise one or more valves whose opening is triggered mechanically by the displacement of the membrane and which allow the refeeding only when it is in extreme rear position. In both cases, the membrane is deformable without stiffness or significant elasticity, so that the suction height of the pump is a function of the pressure in the intermediate chamber.
- Some of the known controlled systems comprise a valve cooperating with a fixed seat through which the refeeding duct opens into the intermediate chamber, the valve being biased on its seat by a spring and being actuated at the opening by the membrane when it tends to exceed the end of the suction stroke of the pump.
- the membrane is flexible and practically without stiffness.
- the diaphragm used is an elastically deformable dome-shaped or cone-shaped membrane of great stiffness and which has a memory of its shape at rest corresponding to the end of the suction stroke at which it returns elastically when the pressure in the intermediate chamber ceases.
- the small displacement of these pumps does not allow to simply transpose the known devices that provide this function. It is therefore appropriate to adapt the compensation system to the particular operating conditions of these pumps.
- the invention consists in this adaptation and leads to a miniaturization of the compensation circuit of the working chamber which There are also advantages, in particular reduced space, in pumps with higher flow rates.
- the subject of the invention is a hydraulically controlled diaphragm pump comprising a pumping chamber formed between a head and a pump body, with a mobile wall formed by an elastically deformable membrane from its resting form. which corresponds to its state at the end of the suction stroke of the pump, a constant volume intermediate hydraulic chamber formed in the pump body, adjacent to the pumping chamber at the level of the membrane and comprising a piston driven by a movement alternating inside this intermediate chamber, a leakage compensation volume of the intermediate chamber being connected thereto by a feedback channel through a free unidirectional valve and without calibration whose direction is in the direction of the intermediate chamber, characterized in that the unidirectional valve and at least one reservoir part of the compensation volume are housed in a body attached to the pump body at the highest point of the intermediate hydraulic chamber in the working position of the pump.
- the insert body is in two parts, namely a lower partition element carrying the seat of the free valve and a holding element of this partitioning element forming a reservoir for the compensation and closure volume
- the volume of the intermediate chamber (or working chamber) is divided between a main volume swept by the end of the piston in its reciprocating movement and a reduced secondary volume formed by the extremely short refeeding duct and functional spaces. existing due to the constitution of the body of the pump in several pieces assembled to delimit the working chamber. This volume is thus limited to the minimum necessary for the operation of the pump, with dead spaces of reduced volume and virtually without seals subjected to high pressure so likely to modify, by their deformation, the volume of the working chamber. Channels that belong to the secondary volume of the working chamber can affect weak sections because the fluid used is of high quality without solid particles and without much dissolved gas.
- the invention makes it possible to reduce to a few cubic centimeters the capacity of the compensation volume for the fluid necessary for the replenishment of the intermediate hydraulic chamber.
- the compensation volume is also distributed between the reported body which contains the greater part of this volume by forming a reservoir which is radially implanted in the body of the pump, for example in the part of this body close to the guide bearing surface of the pump. working piston and the various channels and functional clearances which are at atmospheric pressure, in the vicinity of the working piston guide bearing and in communication with this reservoir.
- the free unidirectional valve is, in the sense of the invention a valve completely free of return spring on its seat, which may be the case when this recall is provided by the effect of the force of gravity or a valve assisted to closing by a spring whose role is to compensate for the effect of gravity if the latter for example has the effect of moving the valve from its seat.
- the working chamber is also connected to the reservoir of the compensation volume by means of a and a calibrated safety valve which closes it when the pressure in the working chamber is below the setting value.
- the aforesaid body includes this discharge channel in derivation of the free valve in the partition element.
- a degassing channel is provided between the discharge channel and the reservoir of the compensation volume bypassing the safety valve.
- vertex wall of the body is transparent.
- the safety valve advantageously comprises a rod whose free end constitutes an overpressure indicator in the working chamber.
- a space belonging to the compensating space is provided between the piston and its guide sleeve and forms a means for collecting leaks between the piston and the sleeve.
- FIG. 1 is a block diagram of the pump according to the invention
- FIG. 2 is a sectional plan of a first embodiment of the pump according to FIG. 1 and FIG. 2A is a partial enlargement of FIG.
- FIG. 3 illustrates a partial enlargement of a preferred embodiment of the invention.
- a hydraulically controlled pump head comprises a pumping head 1 which defines with a membrane 2 a pumping chamber 3.
- the membrane 2 is elastically deformable from its form at rest (the one shown) which corresponds to its state at the end of the suction stroke of the pump.
- the stiffness of this membrane is such that the suction power of the pump is defined by the capacity of the membrane to return by itself to its rest position. It is more specifically a low flow pump and medium or high pressure.
- the pumping chamber is connected to the outside by a suction channel 4 and a discharge channel 5, which are equipped with unidirectional valves contained in valve boxes 6 and 7.
- the membrane constitutes the deformable wall of an intermediate hydraulic chamber 8 formed in the body 9 of the pump.
- a piston 10 is mechanically actuated by a motor and a transmission known per se, reciprocating in the intermediate chamber 8.
- the volume of the chamber 8 is theoretically constant and the volume swept into this chamber by the piston 10 corresponds to the volume variation of the pumping chamber 3.
- the fluid contained in this chamber although incompressible, sees its volume vary due to leaks between the piston and the guide of its reciprocating movement in the body of the pump.
- the working fluid contains dissolved gases that occur during the compression-decompression cycles it undergoes.
- a safety valve allows the fluid to escape from the intermediate chamber when there is a blockage at the pumping chamber.
- the volume of the chamber 8 is therefore not constant and it is necessary to provide for the compensation of the fluid lost by suction of a sufficient quantity of the latter during the suction stroke of the piston 10.
- the intermediate chamber 8 is in communication with a compensation tank 11 by two channels 12a and 12b.
- Channel 12a is a channel for supply that connects the working chamber to the compensation tank 11.
- This channel 12a comprises a unidirectional valve 13, free, that is to say, the valve is freely falling on its seat or is recalled by a very weak support spring .
- the forward direction is that going from the tank 11 to the intermediate chamber 8.
- the channel 12b is a discharge channel and comprises a calibrated valve 15 which constitutes the safety valve mentioned above for the chamber 8. This valve is passing in the direction from the chamber 8 to the tank 11 if the pressure in the Chamber 8 exceeds an adjustable threshold value by adjusting the calibration of the valve by means, for example, of a screw 16. A purge passage for the gas contained in the chamber 8 may be made bypassing the safety valve 15 as illustrated by FIG. example by channel 14.
- this channel portion is generally made in the form of independent conduits, connected via seals and which are source of leakage of the fluid they contain, subjected to pressure variations during operation of the pump. and whose volume is large compared to that of the working chamber of a small flow pump.
- the invention is a constructive measure, one of the advantages of which is to make this volume of fluid "dead” minimal and confined under reinforced sealing to reduce the needs for compensation of the working chamber of the pump.
- the piston 10 is slidably mounted in a guide sleeve 17 mounted in the pump body 9 so that the guide 17 defines on the side of the intermediate chamber 8 with the pump body 9 which receives it, an annular space 18 which opens on the intermediate chamber 8 and which forms a portion of the channel 12a or part of the chamber 8.
- the sleeve 17 also defines with the piston 10 a collection chamber 19 of the leakage of the working liquid.
- the chamber 8, the annular space 18 and the chamber 19 are connected by channels 20, 21 to a cavity 22 provided in the body 9 of the pump in which a tubular partition element 23 is housed.
- This partitioning element defines in the cavity 22 a chamber 24 in which opens the channel 20 from the chamber 19 for collecting leaks.
- the bottom of the tubular partition element 23 has a central channel 25 which communicates with the chamber 24.
- This channel opens into a housing 26 of the partition element in which is housed the safety valve 15.
- the seat of this valve 15 is constituted by the bottom of this housing 26 around the mouth of the channel 25. Above this seat, the valve 15 defines an annular chamber 27 in the housing 26, in which opens an extension 28 of the channel 21 formed in the partition member 23.
- a chamber 29 formed in the valve 15 communicates with the channel 25 and thus the chamber 24 by a channel 30 which comprises the valve 13, passing in the direction from the chamber 24 to the chamber 29.
- valve 13 is here a ball valve movable relative to a seat carried by the calibrated valve 15 which is the outlet in the chamber 29 of the channel 30.
- the stroke of this valve is limited by a stop 13a housed in the safety valve 15.
- the chamber 29 is above this ball under the abutment 13a.
- the annular chamber 27 communicates continuously with the chamber 29 by a channel 29a through the body of the valve 15.
- the end of the valve 15 facing the bottom of the housing 26 is conical, which allows the pressure in the chamber 29 , therefore in the chamber 8, to reign in a chamber 27a and to be applied to a large effective surface of the valve 15. Above the annular chamber 27, the valve 15 slides in the housing 26.
- the safety valve 15, inside the partition element 23, is returned to its seat by a spring R.
- a tubular element 31 forms the enclosure of the compensation reservoir 34 and cooperates by screwing with a threaded portion 22a of the cavity 22 to firmly secure the partitioning element 23 at the bottom of this cavity. cavity.
- This tubular element carries a perforated transverse partition 32 to support the adjusting screw 16 for setting the return spring of the valve 15.
- the spring R thus extends between this screw 16 and the valve 15 in the internal space of the element 31 which constitutes a reservoir 34 which is the main part of the compensation volume 11.
- a channel 33 formed in the partition element 23 permanently connects the reservoir 34 to the chamber 24.
- a seal 35 is provided at the connection of the channels 21 and 28.
- the assembly is surmounted by a transparent cover 36 removable that closes the compensation volume, allows access to add oil if necessary and allows several checks of the operation of the pump.
- the level of working oil that is to say the fluid contained in the intermediate hydraulic chamber and in the compensation volume, is adjusted to be in operation above the perforated partition 32.
- the portion of the feedback channel 12a downstream of the valve 13 here comprises the chamber 29 the bore 29a, the channel 28 and the channel 21 and that the upstream portion of the discharge channel 12b further comprises channels and preceding spaces chamber 27 and chamber 27a.
- the compensation volume is formed by all parts of the hydraulic circuit which are at atmospheric pressure, namely the chambers, channels, volumes and orifices 19, 20, 24, 25, 30, 33 and 34.
- the degassing channel 14 is here constituted by the cylindrical functional clearance that exists between the abutment 13a of the valve 13 and the inner surface of the valve 15 as well as the functional clearance between the valve 15 and the housing 26 of the element 23.
- the elastic return of the membrane to its state of rest is allowed.
- the volume of liquid in the chamber 8 may be less than that of the working chamber, of course increased by the volume of all the channels and adjoining chambers that communicate freely with chamber 8 because of permanent leakage of this fluid and outgassing.
- the last part of the suction stroke of the piston can cause in this case a depression in this chamber and the valve 13 opens. Liquid is therefore admitted in addition to the intermediate hydraulic chamber 8 and the displacement of the pump is preserved. As a result, there is a compensation flow supplying the hydraulic chamber.
- Figure 3 illustrates a preferred embodiment of the invention.
- the differences of embodiment are due to the body attached to the pump body 9.
- the partitioning element 23 carries two ball valves 40 and 41 in series. The valves are no longer formed in the body of the safety valve 15.
- the channel 21 extended by the channel 28 is in communication with a section 29b of the chamber 29 around the second valve 41.
- the chamber 29 is located above the element 23, dug as a countersink of the body of the valve 15 of a drawer 42 with an inner channel 43 which is from the highest point of the chamber 29. Under the effect of an overpressure, the drawer is raised against the the effect of the return spring R, the overpressure being that which can prevail in the working chamber 8, 18 and reaching the chamber 29 through the channels 21 and 28.
- the spool 42 is no longer properly safety crossed by the fluid under excessive pressure. It constitutes, with the element 31 in which it is slidably guided, a variable volume capacity which constitutes an expansion chamber for limiting the pressure in the channels to that set by the calibration of the spring R.
- the spring R tends to press the drawer 42 on the partitioning element 23 making the volume of the chamber 29 minimal.
- the functional clearance serves as a degassing channel 14 at the outlet of the channel 43.
- the pressure part of the channel 12a comprises the channels 21, 28, the chamber 29 with its section 29b
- the slide 42 is provided with a rod 44 whose end 44a, which can be colored, constitutes an overpressure indicator in the working chamber and therefore an abnormal operation of the pump. Indeed, an operator will easily notice, through the transparent wall 36, the beat of the end 44a of the rod 44 under this wall, sign for example that the discharge circuit of the pump is closed. It is then possible for him to intervene quickly. In order for this indicator to be visible, the screw 16 for setting the safety valve is replaced in this variant by a hollow nut 16a.
- the cylindrical partition element 23 houses the two valves and is housed in the recess 22 of the pump body which extends perpendicularly to the axis of the piston 10.
- the functions, compensation, safety and degassing, increased by a visualization function, are provided by an assembly which is mounted as a cartridge in the transverse recess 22 of the body 9 of the pump, namely the cylindrical partition element element 23, the two valves 40, 41 , the spring R and the tubular element 31 for fixing this partitioning element in the cavity 22 of the pump body which closes the main reservoir 34 of the compensation volume, which carries the means of tensioning the safety valve. or the sliding drawer of the expansion chamber and which allows a transparent hood 36 to monitor the operation of the device and in particular to visually diagnose the pump discharge pressure.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0900440A FR2941749A1 (fr) | 2009-02-03 | 2009-02-03 | Pompe a membrane elastique a commande hydraulique |
PCT/FR2010/000081 WO2010089476A1 (fr) | 2009-02-03 | 2010-02-03 | Pompe a membrane elastique a commande hydraulique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2394056A1 true EP2394056A1 (fr) | 2011-12-14 |
EP2394056B1 EP2394056B1 (fr) | 2018-12-19 |
Family
ID=40874648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10707069.0A Active EP2394056B1 (fr) | 2009-02-03 | 2010-02-03 | Pompe a membrane elastique a commande hydraulique |
Country Status (8)
Country | Link |
---|---|
US (1) | US8888469B2 (fr) |
EP (1) | EP2394056B1 (fr) |
JP (1) | JP5416226B2 (fr) |
CN (1) | CN102301139B (fr) |
CA (1) | CA2750861C (fr) |
FR (2) | FR2941749A1 (fr) |
RU (1) | RU2505707C2 (fr) |
WO (1) | WO2010089476A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2949936A1 (fr) | 2014-05-27 | 2015-12-02 | Milton Roy Europe | Pompe à membrane à commande hydraulique comprenant un chemin de dégazage dédié |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2985791B1 (fr) * | 2012-01-17 | 2014-03-07 | Milton Roy Europe | Dispositif de detection de rupture d'une membrane d'une pompe a actionnement hydraulique, procede de montage d'un tel dispositif sur une pompe, et pompe equipee d'un tel dispositif |
US20130287600A1 (en) * | 2012-04-27 | 2013-10-31 | Checkpoint Fluidic Systems International, Ltd. | Direct Volume-Controlling Device (DVCD) for Reciprocating Positive-Displacement Pumps |
CN107806406A (zh) * | 2017-10-20 | 2018-03-16 | 项达章 | 一种均压限位补油的液压隔膜计量泵 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2427818A (en) * | 1945-12-29 | 1947-09-23 | Malsbary Mfg Company | Pump |
US2578746A (en) * | 1946-12-12 | 1951-12-18 | Mills Ind Inc | Fluid pump |
US3612727A (en) * | 1969-10-17 | 1971-10-12 | Crane Co | Metering pump |
GB1300500A (en) * | 1971-06-08 | 1972-12-20 | Crane Co | Metering diaphragm pump |
GB1398239A (en) * | 1971-06-14 | 1975-06-18 | Fawcett Eng Ltd | Pressure monitoring relief valves |
SU561805A1 (ru) * | 1975-03-19 | 1977-06-15 | Специальное Конструкторское Бюро "Нефтехимприбор" | Мембранный гидроприводной дозировочный насос |
FR2461131A1 (fr) * | 1979-05-11 | 1981-01-30 | Creusot Loire | Procede de reglage du debit d'une pompe a membrane a commande hydraulique et pompe a membrane a commande hydraulique perfectionnee |
FR2492473B1 (fr) * | 1980-10-17 | 1985-06-28 | Milton Roy Dosapro | Pompe a membrane a compensation dans la chambre hydraulique de commande |
FR2566054B1 (fr) * | 1984-06-13 | 1988-09-09 | Milton Roy Dosapro | Pompe a membranes a chambre hydraulique intermediaire et dispositif de compensation des fuites de la chambre de commande |
DE3446952A1 (de) * | 1984-12-21 | 1986-07-10 | Lewa Herbert Ott Gmbh + Co, 7250 Leonberg | Membranpumpe mit umlaufspuelung |
JPH05296153A (ja) * | 1992-04-22 | 1993-11-09 | Aisan Ind Co Ltd | ダイヤフラムポンプ |
JP3507212B2 (ja) * | 1994-08-23 | 2004-03-15 | 日機装株式会社 | 無脈動ポンプ |
US6264436B1 (en) * | 1999-05-11 | 2001-07-24 | Milton Roy Company | Multifunction valve |
RU16527U1 (ru) * | 2000-07-21 | 2001-01-10 | Агапов Валерий Ибрагимович | Мембранный гидроприводной дозировочный насос |
DE10143978B4 (de) * | 2001-09-07 | 2005-03-03 | Lewa Herbert Ott Gmbh + Co. | Hydraulisch angetriebene Membranpumpe mit vorgespannter Membran |
EP1855004B1 (fr) * | 2002-10-09 | 2009-04-08 | Tacmina Corporation | Pompe alternative ayant deux membranes |
RU31153U1 (ru) * | 2003-04-18 | 2003-07-20 | Подрезов Александр Владимирович | Мембранный гидроприводной дозировочный насос |
RU38365U1 (ru) * | 2004-01-30 | 2004-06-10 | Подрезов Александр Владимирович | Мембранный гидроприводной дозировочный насос |
US7425120B2 (en) * | 2005-04-26 | 2008-09-16 | Wanner Engineering, Inc. | Diaphragm position control for hydraulically driven pumps |
RU67195U1 (ru) * | 2006-12-21 | 2007-10-10 | ЗАО "Талнах" | Мембранный гидроприводный дозировочный насос |
CN101245777B (zh) * | 2007-02-13 | 2010-09-08 | 米尔顿罗伊欧洲公司 | 具有泄漏补偿设备的液压致动隔膜泵 |
-
2009
- 2009-02-03 FR FR0900440A patent/FR2941749A1/fr active Pending
-
2010
- 2010-02-03 WO PCT/FR2010/000081 patent/WO2010089476A1/fr active Application Filing
- 2010-02-03 US US13/145,254 patent/US8888469B2/en active Active
- 2010-02-03 CN CN201080006408.XA patent/CN102301139B/zh not_active Expired - Fee Related
- 2010-02-03 RU RU2011136676/06A patent/RU2505707C2/ru active
- 2010-02-03 JP JP2011546906A patent/JP5416226B2/ja not_active Expired - Fee Related
- 2010-02-03 CA CA2750861A patent/CA2750861C/fr not_active Expired - Fee Related
- 2010-02-03 EP EP10707069.0A patent/EP2394056B1/fr active Active
- 2010-02-03 FR FR1000446A patent/FR2941748B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2010089476A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2949936A1 (fr) | 2014-05-27 | 2015-12-02 | Milton Roy Europe | Pompe à membrane à commande hydraulique comprenant un chemin de dégazage dédié |
US9856870B2 (en) | 2014-05-27 | 2018-01-02 | Milton Roy Europe | Hydraulically controlled diaphragm pump comprising a dedicated degassing path |
Also Published As
Publication number | Publication date |
---|---|
CA2750861A1 (fr) | 2010-08-12 |
WO2010089476A1 (fr) | 2010-08-12 |
RU2505707C2 (ru) | 2014-01-27 |
EP2394056B1 (fr) | 2018-12-19 |
JP5416226B2 (ja) | 2014-02-12 |
FR2941748B1 (fr) | 2011-08-19 |
FR2941749A1 (fr) | 2010-08-06 |
CN102301139A (zh) | 2011-12-28 |
RU2011136676A (ru) | 2013-03-10 |
JP2012516962A (ja) | 2012-07-26 |
US8888469B2 (en) | 2014-11-18 |
FR2941748A1 (fr) | 2010-08-06 |
US20110280747A1 (en) | 2011-11-17 |
CN102301139B (zh) | 2015-05-27 |
CA2750861C (fr) | 2013-08-06 |
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