EP2362101B1 - Pompe de dosage - Google Patents

Pompe de dosage Download PDF

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Publication number
EP2362101B1
EP2362101B1 EP20100001641 EP10001641A EP2362101B1 EP 2362101 B1 EP2362101 B1 EP 2362101B1 EP 20100001641 EP20100001641 EP 20100001641 EP 10001641 A EP10001641 A EP 10001641A EP 2362101 B1 EP2362101 B1 EP 2362101B1
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EP
European Patent Office
Prior art keywords
section
channel
valve
metering pump
cross
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
Application number
EP20100001641
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German (de)
English (en)
Other versions
EP2362101A1 (fr
Inventor
Sergei Gerz
Jan Knedler
Andreas Kraus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Grundfos Management AS filed Critical Grundfos Management AS
Priority to EP20100001641 priority Critical patent/EP2362101B1/fr
Priority to US13/579,677 priority patent/US20120312399A1/en
Priority to PCT/EP2011/000724 priority patent/WO2011101121A1/fr
Priority to JP2012553217A priority patent/JP5784636B2/ja
Priority to CN201180009711.XA priority patent/CN102762861B/zh
Publication of EP2362101A1 publication Critical patent/EP2362101A1/fr
Application granted granted Critical
Publication of EP2362101B1 publication Critical patent/EP2362101B1/fr
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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
    • F04B53/06—Venting
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump

Definitions

  • the invention relates to a metering pump according to the preamble of claim 1.
  • Metering pumps are usually designed as positive displacement pumps and have as displacement a piston or a membrane, which are moved by a drive motor.
  • the displacer displaces the volume in the interior of the dosing by a predetermined amount, so that this volume is conveyed out of the dosing.
  • the metering chamber usually has two connections, a pressure channel and a suction channel, wherein the pressure channel usually extends vertically upwards and the suction channel, starting from the metering chamber, extends vertically downwards.
  • DE 2 216 215 A1 discloses a corresponding hydraulically powered diaphragm pump which also includes means for venting the driving hydraulic circuit.
  • EP 0 228 628 A2 such as US 4,336,000 disclose metering pumps, which are designed as piston pumps. Even with these pumps, there is the problem that it can lead to gas formation in the dosing chamber when pumping outgassing substances.
  • the metering pump according to the invention has a metering chamber which is connected to a suction channel through which the medium to be conveyed, in particular the liquid to be delivered, enters the metering chamber. Furthermore, the metering chamber is connected to a pressure channel through which the medium delivered by the metering pump emerges from the metering chamber.
  • the conveying or the pumping action is achieved in a conventional manner by a displacement body, which is arranged on or in the metering space.
  • the displacement body can be formed for example by a membrane or a piston.
  • means for dividing gas bubbles are arranged in the suction channel or the suction channel is designed such that gas bubbles entering through the suction channel can be broken up into smaller gas bubbles. If large gas bubbles enter through the suction channel, there is the danger that these large gas bubbles adhere to the walls of the suction channel and thus remain in the suction channel or metering chamber. When the gas bubbles are broken up into smaller gas bubbles, this has the advantage that the danger of sticking to the walls of the suction channel is reduced and these smaller gas bubbles can rise faster through the suction channel and further through the metering chamber into the pressure channel.
  • gas bubbles which are located downstream of a valve in the suction channel in the dosing, ascend so fast that they preferably after 80% of the total stroke time (time of the suction stroke and the subsequent pressure stroke) the outlet end of the dosing, ie the pressure channel in particular reach an outlet valve located in the pressure channel, so that they can then be pushed out of the dosing towards the end of the pressure stroke.
  • the means for dividing the gas bubbles may be arranged as additional elements, for example projections, ribs or the like in the suction channel, preferably downstream of a valve or inlet valve in the suction channel.
  • a division or tearing of gas bubbles so that larger gas bubbles divide into smaller gas bubbles, can be achieved by cross-sectional changes of the suction channel.
  • a cross-sectional widening is formed, wherein this cross-sectional widening is further preferably discontinuous, d. H. for example, in the form of a step or a paragraph. It borders the larger, d. H. extended cross section of the suction channel to the dosing.
  • the cross section of this extended suction channel is preferably larger than the cross section of the suction channels of conventional metering pumps. Ie.
  • the cross section of the suction channel is chosen deliberately larger than would be necessary for the normal operation of the metering pump to improve the removal of gas bubbles. At the cross-sectional widening is achieved that tear up gas bubbles.
  • the cross section of the suction channel widens from a first smaller cross section to a second larger cross section, wherein the area of the first cross section has a size which is between 0.3 times and 0.8 times the area of the second cross section.
  • the first narrower cross section is selected so that it substantially corresponds to the cross section, in particular the smallest cross section of a suction channel of a conventional metering pump. Ie. the downstream adjoining extended portion is formed widened compared to the cross-sectional size of the suction channel of a known metering pump.
  • the smaller cross-section is formed by the exit of a valve, i. H. of the inlet valve defined in the suction channel.
  • This exit is the narrowest point in the suction channel.
  • gas bubbles will initially get stuck in this constriction and then at the exit end of the constriction, i. H. tear off at the cross-sectional widening and thus divided into smaller gas bubbles.
  • the valve further preferably has a valve body held in a cage, in particular a valve ball, and the smaller cross section is defined by the free spaces located between the ribs or webs of the cage and the valve body.
  • the cage or ball cage has in the flow direction extending webs or ribs, between which the valve body is guided. At the downstream end of these webs or ribs protrude radially inward, so that there is formed an axial stop for the valve body. Through the free spaces between the webs and ribs flows to be pumped liquid.
  • the common cross-section of these clearances defines the smaller cross-section before the cross-sectional widening.
  • the pressure channel extends in a first portion which adjoins the metering space, obliquely to the vertical upward from away from the dosing chamber. Due to the oblique configuration of this pressure channel, ie the outlet channel, which is arranged at the vertically upper end of the dosing, it is achieved that there are substantially no horizontally extending upper boundary surfaces in the region of the pressure channel, to which gas bubbles can accumulate. Due to the oblique course arise obliquely to the vertical extending upper boundary surfaces along which ascend gas bubbles. Due to the oblique upward course, the gas bubbles will continue to rise along these surfaces and thus automatically enter the pressure channel and rise in this. In this way, it is ensured that gas bubbles in the metering chamber, which collect on account of the buoyancy at the upper end of the metering chamber, reliably enter the pressure channel and are conveyed out as quickly as possible out of the metering chamber.
  • a second section which extends in the vertical direction adjoins downstream of the first portion of the pressure channel. Even in this section of the pressure channel thus gas bubbles can rise unhindered and can not accumulate. In this way, a pressure channel is created, which has no horizontally extending sections or walls, at which gas bubbles could accumulate or set.
  • a valve is preferably arranged in the second section of the pressure channel.
  • This valve may be a check valve, as is usually arranged on the output side of the metering chamber in such metering pumps.
  • This valve prevents the suction stroke of the displacer in the dosing a backflow of the medium to be pumped through the pressure channel into the dosing into it.
  • This valve is arranged in the vertical section of the pressure channel, so that there are also preferably substantially no horizontal surfaces on which accumulate larger gas bubbles could. Furthermore, this arrangement is advantageous because such valves usually close by gravity.
  • the opening into the metering chamber suction channel is designed accordingly, so that the suction channel in a first adjacent to the dosing section extends obliquely to the vertical down from the dosing. This ensures that in this section of the suction channel substantially no horizontally extending upper surfaces are present, to which gas bubbles could accumulate. Rather, due to the oblique course, gas bubbles can rise in the suction channel along the obliquely upward wall of the suction channel and enter the metering chamber. There they can then ascend further and enter, as described above, in the pressure channel.
  • a second portion which extends in the vertical direction adjoins. Also in this section, therefore, no horizontal surfaces are given, to which gas bubbles could accumulate.
  • the obliquely extending first sections of the pressure channel and optionally suction channel still allow, as in previously known, horizontally extending away from the dosing channels, to arrange the connections and optionally valves of suction and pressure channels horizontally offset to the center of the dosing or laterally of the dosing ,
  • This is usually desirable for structural reasons, to have sufficient space for the connections and valves available because on one side directly adjacent to the dosing usually a displacer, such as a membrane is arranged with their drive, so there is the space for Ports and valves is restricted.
  • these ports and valves usually have a diameter, which is greater than the width of the dosing, in particular seen in the stroke direction of the displacement. In this respect, it is necessary that these components extend laterally beyond the limits of the dosing.
  • a valve disposed in the second section of the suction channel, d. H. in the vertically extending portion of the suction channel a valve disposed.
  • This valve may be a check valve, as known from conventional metering pumps. This check valve closes during the pressure stroke and thus prevents the medium to be conveyed, instead of flowing back into the pressure channel, into the suction channel.
  • Such a valve is usually designed so that it closes by gravity, so that it is arranged particularly favorable in a vertically extending channel section.
  • valves in the pressure channel and possibly the suction channel are to be understood that there also several valves can be provided arranged in series.
  • the first portion of the pressure channel and / or the first portion of the suction channel are inclined in a direction opposite to the vertical, which faces away from a displacement of the metering pump.
  • the connections for suction and pressure channel by means of which the metering pump is connected to outer piping systems, and in particular also inlet and outlet valves or check valves can be arranged laterally offset from the metering chamber.
  • these components can be arranged offset to a side facing away from the displacer and the drive, at which sufficient space for these components, in particular for the valves is present.
  • the pressure channel and / or the suction channel are connected to the metering space in the region of its outer periphery.
  • the metering chamber preferably has a circular cross section about the horizontal axis, preferably the lifting axis of the displacement body.
  • Suction channel and pressure channel extend preferably from the outer periphery of the metering at the lowest and at the highest point of the dosing away, so that there are no top horizontal surfaces are formed on which gas bubbles can accumulate.
  • the pressure channel and optionally the suction channel extend with its first oblique portion preferably at an angle between 20 and 70 degrees, more preferably at an angle between 10 and 60 degrees, and in particular between 10 and 60 degrees to the vertical.
  • the first section of the pressure channel and / or the first section of the suction channel preferably have a diameter greater than 4 mm, more preferably greater than 5 mm and in particular greater than 6 mm, z. B. 6.5 mm, on.
  • a diameter greater than 4 mm, more preferably greater than 5 mm and in particular greater than 6 mm, z. B. 6.5 mm, on.
  • the pressure channel upstream of a valve body arranged in the pressure channel has a larger diameter or cross-section than downstream of the valve body. This configuration ensures that gas bubbles can be removed as quickly as possible through the valve in the pressure channel and thus the dosing is kept as free as possible of gas bubbles. Downstream of the valve can then reduce the line cross-section back to the usual level.
  • the vertical distance between a valve in the pressure channel and a valve in the suction channel d. H. the usual check valves, as small as possible.
  • the valves are arranged as close as possible to the dosing space in order to keep the channels adjacent to the dosing space and, as a whole, the volume and the path of the medium to be conveyed between the two valves as small as possible.
  • the vertical distance between a valve in the pressure channel and a valve in the suction channel is equal to or less than 2.5 times and preferably equal to or less than twice the maximum diameter of the metering chamber transverse to the horizontal axis. With this configuration, such a small distance between the valves is achieved.
  • the vertical distance between a valve in the pressure channel and a valve in the suction channel, ie in particular the check valves adjacent to the dosing equal to or smaller than the outer diameter of the displacement body forming membrane.
  • the membrane usually extends beyond the outer diameter of the metering chamber by a certain amount, since it is sealed and fixed in this area. The fact that the distance between the valves is equal to or smaller than the outer diameter of this membrane, a very compact overall construction of the dosing of the metering pump is achieved and in particular the volume between the valves kept as small as possible, with the positive effects described above.
  • the metering pump unit has, in a known manner, a motor housing 2 with a pump head 4 attached thereto.
  • a drive motor 6 is arranged, which drives a connecting rod 10 via a gear 8, so that it moves the central region of a membrane 12 linearly back and forth.
  • the diaphragm 12 forms the displacer at a metering chamber 14 in the pump head 4.
  • the metering chamber 14 forms a defined volume, which can be reduced and increased by movement of the diaphragm 12, whereby on the metering chamber 14 from the pump a defined volume at each stroke of Membrane 12 is promoted.
  • the pump head 4 is arranged so that at its upper end a pressure port 16 and at its lower end a suction port 18 is located. About the suction port 18, the medium to be conveyed or the liquid to be delivered is sucked. About the pressure port 18, the pumped or metered liquid is dispensed.
  • the pressure port 16 and the suction port 18 are provided to be connected to leads.
  • the pressure port 16 is connected to the metering chamber 14 via a pressure channel 20.
  • the pressure channel 20 has a first section 22 and a second section 24 adjoining it downstream.
  • the first portion 22 of the pressure channel 20 extends with its longitudinal axis A obliquely to the vertical X of the metering 14 upwards.
  • the first section 22 of the pressure channel 22 extends inclined in a direction away from the metering chamber 14, which is the displacer in the form of the membrane 12 or the motor housing 2 is remote.
  • the longitudinal axis A of the first portion 22 of the pressure channel 20 extends at an angle of 45 degrees to the vertical X and to the horizontal Y.
  • the oblique arrangement of the first section of the pressure channel 22 has the advantage that it is possible for the vertical second portion 24 of the pressure channel 20 laterally, ie in the direction of the horizontal axis Y, from the metering chamber 14 in the direction away from the membrane 12 offset. This provides sufficient space to place the pressure port 16 and the two valves 26 and 28 located in the pressure channel in the pump head 4 without having to place them in the area of the motor housing 2.
  • a vertical section 24 connects, in which the two check valves 26, 28 are located, which are connected to each other in series. Due to the vertical course of this second section 24 can rise unhindered in this gas bubbles.
  • the valves 26 and 28 close by gravity.
  • the pressure channel 20 branches off at the highest point of the metering chamber 14 from this. Vertically opposite, ie at the lower end, the suction channel 32 opens into the dosing chamber 14.
  • the suction channel 32 has a first section 34 and a second section 36 adjoining it upstream. Like the first section of the pressure channel 20, the first section 34 of the suction channel 32 extends with its longitudinal axis B obliquely to the vertical X and to the horizontal Y downwards. In the example shown here, the angle of the longitudinal axis B to the horizontal Y and to the vertical X is also 45 degrees, but the angle could also be chosen differently, preferably in the range between 15 and 70 degrees. It is essential that the first portion 34 of the suction channel 32 does not extend horizontally, as in the invention Also, the first portion 22 of the pressure channel 20 should not extend horizontally.
  • the suction channel 32 Due to the oblique course of the first section 34 of the suction channel 32 it is achieved that gas bubbles, which are located in the suction channel 32, can rise unhindered in this section upwards. You will slide along the upper wall of the section 34 and enter the metering chamber 14, where they then ascend to the first portion 22 of the pressure channel 20 and are conveyed away by this to the pressure port 16. Also, the suction channel 32 thus has substantially no horizontally extending upper boundary surfaces on which gas bubbles could accumulate.
  • valves 30 and 38 represent in a known manner two closing by gravity check valves.
  • valve 30 is formed by a valve ball, which is held in a ball cage 31.
  • the ball cage is formed of ribs extending parallel to the vertical X, the free spaces 33 between these ribs defining the flow paths through the valve.
  • the free spaces 33 in the circumference of the ball and between the webs of the ball cage 31 together define a first smaller cross-section which is smaller than the cross-section in the downstream adjoining suction channel 32. D. h. at the outlet end of the free spaces 33 is given a cross-sectional widening.
  • the cross-sectional widening is formed such that the total cross-sectional area of the free spaces 33 is preferably between 0.3 times and 0.8 times the cross-sectional area of the downstream adjoining suction channel 32.
  • This configuration ensures that gas bubbles, which enter through the suction port 18, adhere to the free spaces 33 on the walls thereof and then demolish individual smaller gas bubbles at the cross-sectional widening to the downstream suction channel 32, so that larger gas bubbles are divided into smaller gas bubbles be and the smaller gas bubbles then quickly through the suction channel 32, the metering chamber 14 and the pressure channel 20 can rise.
  • the first valve 26 on the pressure side and the first valve 30 on the suction side in the vertical direction X close to each other to the total Volume and the distance between these two valves 26 and 30, in particular the distance between these valves outside the metering chamber 14, that is to keep substantially the length of the pressure channel 20 upstream of the valve 26 and the length of the suction channel 32 downstream of the valve 30 as small as possible .
  • This also has the advantage that at standstill of the pump, the volume of the medium to be pumped or the liquid to be delivered in this area is as low as possible, so that in the case of an outgassing medium only a smaller amount of gas can be released so that the amount and size of accumulating in this area gas bubbles is kept as small as possible.
  • the distance a between the output side of the valve 30 and the input side of the valve In the example shown, 26 is equal to the outer diameter of the diaphragm 12.
  • This distance a further has a size which is equal to or less than 2.5 times, more preferably less than twice the maximum diameter d of the metering chamber 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (14)

  1. Pompe doseuse comprenant une chambre de dosage (14), un conduit d'aspiration (32) relié à la chambre de dosage (14) et un conduit de pression (20) relié à la chambre de dosage (14), caractérisée en ce que
    des moyens pour diviser les bulles de gaz sont disposés dans le conduit d'aspiration (32) sous la forme d'un élargissement de la section,
    une section élargie du conduit d'aspiration (32) jouxtant la chambre de dosage (14).
  2. Pompe doseuse selon la revendication 1, caractérisée en ce que, comme moyens pour diviser les bulles de gaz, est prévu un élargissement brusque de la section formé dans le conduit d'aspiration (32).
  3. Pompe doseuse selon la revendication 2, caractérisée en ce que la section du conduit d'aspiration (32) s'élargit d'une première section, plus petite, à une seconde section, plus grande, l'aire de la première section correspondant à 0,3 fois à 0,8 fois l'aire de la deuxième section.
  4. Pompe doseuse selon la revendication 2 ou 3, caractérisée en ce que la section du conduit d'aspiration (32) s'élargit d'une première section, plus petite, à une seconde section, plus grande, la petite section étant définie par la sortie d'une soupape (30) située dans le conduit d'aspiration (32).
  5. Pompe doseuse selon la revendication 4, caractérisée en ce que la soupape (30) présente un corps de soupape logé dans une cage, et la petite section est définie par les espaces libres (33) situés entre les nervures de la cage (31) et le corps de soupape.
  6. Pompe doseuse selon l'une des revendications précédentes, caractérisée en ce que, dans un premier segment (22) contigu à la chambre de dosage (14), le conduit d'aspiration (20) s'étend vers le haut à partir de la chambre de dosage (14), obliquement par rapport à la verticale (X).
  7. Pompe doseuse selon la revendication 6, caractérisée en ce qu'en aval du premier segment (22) du conduit de pression (20), se raccorde un second segment (24) qui s'étend dans la direction verticale (X) et dans lequel est de préférence montée au moins une soupape (26).
  8. Pompe doseuse selon l'une des revendications précédentes, caractérisée en ce que, dans un premier segment (34) contigu à la chambre de dosage (14), le conduit d'aspiration (32) s'étend vers le bas à partir de la chambre de dosage (14), obliquement par rapport à la verticale (X).
  9. Pompe doseuse selon la revendication 8, caractérisée en ce qu'au premier segment (34) du conduit d'aspiration (32), se raccorde en amont un second segment (36) qui s'étend dans la direction verticale (X), et dans lequel est de préférence disposée au moins une soupape (30).
  10. Pompe doseuse selon l'une des revendications 6 à 9, caractérisée en ce que le premier segment (22) du conduit de pression (20) et/ou le premier segment (34) du conduit d'aspiration (32) est ou sont incliné(s) par rapport à la verticale (X), dans une direction opposée à un corps de refoulement (12) de la pompe doseuse.
  11. Pompe doseuse selon l'une des revendications précédentes, caractérisée en ce que le conduit de pression (20) et/ou le conduit d'aspiration (32) sont reliés à la chambre de dosage (14) dans la région de la périphérie extérieure de celle-ci.
  12. Pompe doseuse selon l'une des revendications précédentes, caractérisée en ce que le premier segment (22) du conduit de pression (20) et/ou le premier segment (34) du conduit d'aspiration (32) présente(nt) un diamètre supérieur à 4 mm, de préférence supérieur à 5 mm et de façon encore davantage préférée, supérieur à 6 mm
  13. Pompe doseuse selon l'une des revendications précédentes, caractérisée en ce que la distance verticale (a) entre une soupape (26) située dans le conduit de pression (20) et une soupape (30) située dans le conduit d'aspiration (32) est égale ou inférieure à 2,5 fois et, de préférence, égale ou inférieure à 2 fois le diamètre maximum (d) de la chambre de dosage (14).
  14. Pompe doseuse selon l'une des revendications précédentes, caractérisée en ce que la distance verticale (a) entre une soupape (26) située dans le conduit de pression (20) et une soupape (30) située dans le conduit d'aspiration (32) est égale ou inférieure au diamètre extérieur d'une membrane (12) qui forme le corps de refoulement.
EP20100001641 2010-02-18 2010-02-18 Pompe de dosage Active EP2362101B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20100001641 EP2362101B1 (fr) 2010-02-18 2010-02-18 Pompe de dosage
US13/579,677 US20120312399A1 (en) 2010-02-18 2011-02-16 Dosing pump
PCT/EP2011/000724 WO2011101121A1 (fr) 2010-02-18 2011-02-16 Pompe doseuse
JP2012553217A JP5784636B2 (ja) 2010-02-18 2011-02-16 定量ポンプ
CN201180009711.XA CN102762861B (zh) 2010-02-18 2011-02-16 计量泵

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100001641 EP2362101B1 (fr) 2010-02-18 2010-02-18 Pompe de dosage

Publications (2)

Publication Number Publication Date
EP2362101A1 EP2362101A1 (fr) 2011-08-31
EP2362101B1 true EP2362101B1 (fr) 2013-07-03

Family

ID=42173598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100001641 Active EP2362101B1 (fr) 2010-02-18 2010-02-18 Pompe de dosage

Country Status (5)

Country Link
US (1) US20120312399A1 (fr)
EP (1) EP2362101B1 (fr)
JP (1) JP5784636B2 (fr)
CN (1) CN102762861B (fr)
WO (1) WO2011101121A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9605669B2 (en) * 2014-03-19 2017-03-28 Graco Fluid Handling (A) Inc. Multi-port metering pump assembly and related methods
JP2018518632A (ja) * 2015-06-22 2018-07-12 セコ エス．ピー．エイ． ブリードバルブおよびそのようなバルブを備えたセルフブリードポンプ
CN106438264B (zh) * 2015-08-04 2018-11-02 浙江福爱电子有限公司 一种脉冲泵
CN107989766A (zh) * 2017-11-27 2018-05-04 浙江艾力芬特泵业科技有限公司 带排气结构的柱塞式计量泵泵头及出口阀

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WO2011101118A1 (fr) * 2010-02-18 2011-08-25 Grundfos Management A/S Groupe motopompe de dosage

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Also Published As

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JP2013519831A (ja) 2013-05-30
WO2011101121A1 (fr) 2011-08-25
CN102762861B (zh) 2016-05-18
CN102762861A (zh) 2012-10-31
JP5784636B2 (ja) 2015-09-24
EP2362101A1 (fr) 2011-08-31
US20120312399A1 (en) 2012-12-13

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