EP2878818A1 - Lineare kolbenpumpe mit einem dauermagneten - Google Patents

Lineare kolbenpumpe mit einem dauermagneten Download PDF

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Publication number
EP2878818A1
EP2878818A1 EP12881862.2A EP12881862A EP2878818A1 EP 2878818 A1 EP2878818 A1 EP 2878818A1 EP 12881862 A EP12881862 A EP 12881862A EP 2878818 A1 EP2878818 A1 EP 2878818A1
Authority
EP
European Patent Office
Prior art keywords
disposed
piston
mounting plate
permanent magnet
cylinder body
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
Application number
EP12881862.2A
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English (en)
French (fr)
Other versions
EP2878818A4 (de
EP2878818B1 (de
Inventor
Ronglan XU
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2878818A1 publication Critical patent/EP2878818A1/de
Publication of EP2878818A4 publication Critical patent/EP2878818A4/de
Application granted granted Critical
Publication of EP2878818B1 publication Critical patent/EP2878818B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
    • F04B17/044—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow using solenoids directly actuating the 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
    • 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
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the present invention relates to a linear piston pump, and more particularly to a permanent magnet linear piston pump.
  • the advantages of the magnetic-force linear piston pump contain a high operating pressure, a simple structure, a low consumption of energy and noises and a long durability. Therefore, it becomes more and more important and is applied to more and more applications.
  • the mechanical movement and principle of the magnetic-force linear piston pump are similar to those of the plunger pump. Both of them take advantage of the relative reciprocating motion between the piston and the cylinder body to incur the variable capacity of the sealed piston cavity inside the pump, thereby inputting and outputting the fluid medium.
  • a prior disclosure of CN1554868 as published on 2004/12/15 and named by "magnetic-force linear piston pump” discloses a magnetic-force linear piston pump which comprises a housing in which a cylinder body and a piston are disposed.
  • the piston is disposed inside the cylinder body with an axial movable airtight fit.
  • On the outer periphery of the cylinder body is an electromagnetic coil.
  • the electromagnetic coil is fixed into the housing.
  • the electromagnetic coil is connected to an oscillating power supply.
  • a permanent magnet is further disposed on the outer periphery of the cylinder body.
  • the permanent magnet and the cylinder body are connected and positioned.
  • One end of the piston is fixed to the housing, and the other end thereof is disposed within an inner hole of the cylinder body.
  • a fluid hole is disposed on the piston.
  • a first unidirectional valve and a second unidirectional valve are relatively disposed in the fluid hole or in the inner cavity of the cylinder body, thereby constructing three opposite and independent cavities in sequence, namely a low-pressure cavity, a variable-capacity operating cavity and a high-pressure cavity.
  • the low-pressure cavity is communicated with an inlet pipe.
  • the high-pressure cavity is communicated with an outlet pipe.
  • the electromagnetic coil is disposed inside the housing, the structure is unreasonable, which incurs an inconvenient installation.
  • the electromagnetic coil and the permanent magnet are all set in the low-pressure cavity, so the sealing treatment to the electromagnetic coil and the permanent magnet is necessary, which incurs a complexity of the manufacture, high costs and hard promotions.
  • the object of the present invention is to overcome the aforementioned problems and to provide a permanent magnet linear piston pump having a simple structure, more convenient manufacture and lower costs.
  • the permanent magnet linear piston pump in accordance with the present invention comprises a piston body, a cylinder body, a permanent magnet assembly and an electromagnetic coil. It is characterized in that the cylinder body is in a shape of a polygonal prism, an interior of which arranges a piston cavity formed by an axial columnar accommodating cavity.
  • the piston body is arranged in the piston cavity by a liquid sealing movable fit mode.
  • a one-way inlet valve and a one-way outlet valve are disposed on an end face of the piston cavity opposite to an end face of a piston.
  • a set of permanent magnet assembly is disposed on at least one side surface of the cylinder body.
  • the permanent magnet assembly includes an inner mounting plate and an outer mounting plate disposed parallel to the side surface of the cylinder body.
  • the inner plate and the outer mounting plate are made of a permeability magnetic material.
  • An inner magnetic body and an outer magnetic body are respectively disposed on opposite surfaces of the inner mounting plate and the outer mounting plate.
  • the inner magnetic body and the outer magnetic body are disposed oppositely and provide contrary magnetic poles at opposite faces thereof.
  • a coil supporting member is disposed at an outside surface of the cylinder body.
  • the electromagnetic coil is axially and distributively wound around the coil supporting member into a barrel shape.
  • a barrel wall formed by the electromagnetic coil is disposed between the inner magnetic body and the outer magnetic body.
  • An axial sliding slot is formed on the side surface of the cylinder body where the permanent magnet assembly is disposed.
  • a connecting post is disposed on a side surface of the piston body in a radial direction to fit in with the sliding slot by a clearance fit mode.
  • the connecting post penetrates through the sliding slot to be in connection with and in linkage with the inner mounting plate and the outer mounting plate.
  • the present invention has the electromagnetic coil which is axially and distributively wound around the coil supporting member at the outside surface of the cylinder body and needs not subject the electromagnetic coil to a sealing treatment, which attains a simple structure, more convenient manufacture, lower costs, a reliable operation and convenient maintenance.
  • two parts of the columnar accommodating cavity in the cylinder body are disposed symmetrically.
  • the piston body is disposed at a middle portion of the columnar accommodating cavity.
  • Two ends of the piston body are in cooperation with the two parts of the columnar accommodating cavity by the liquid sealing movable fit mode respectively, whereby the two parts of the columnar accommodating cavity are respectively defined as a first piston cavity and a second piston cavity, and the two ends of the piston body are respectively defined as a first piston body and a second piston body.
  • a first one-way inlet valve and a first one-way outlet valve are disposed on an end face of the first piston cavity opposite to an end face of the first piston body.
  • a second one-way inlet valve and a second one-way outlet valve are disposed on an end face of the second piston cavity opposite to an end face of the second piston body.
  • a first inner magnetic body and a second inner magnetic body are respectively and symmetrically disposed at two ends of the inner mounting plate.
  • a first outer magnetic body and a second outer magnetic body are respectively and symmetrically disposed at two ends of the outer mounting plate.
  • a first electromagnetic coil and a second electromagnetic coil are respectively and correspondingly disposed on ribs at two sides of the cylinder body. Accordingly, the same cylinder body forms two permanent magnet linear piston pumps, and the piston body can be in the operating status during the reciprocating motion to attain the higher efficiency.
  • one set of permanent magnet assembly is arranged at each side surface of the cylinder body, which allows the permanent magnet linear piston pump to have a greater power.
  • the cylinder body includes a barrel unit and lids at two ends thereof. Sealing rings are respectively disposed between the lids at the two ends and two end faces of the barrel unit.
  • the barrel unit and the lids at the two ends are connected with each other by a plurality of axial shanks and nuts around an outer periphery of the barrel unit.
  • the shanks construct the coil supporting member. Accordingly, such arrangement designing the cylinder body and the coil supporting member attains a simple structure, a simple manufacturing technique and lower costs.
  • ribs are disposed on edges of the cylinder body.
  • the ribs construct the coil supporting member.
  • the inner mounting plate and the inner magnetic body are disposed in a recess between the ribs at two sides of a same side surface of the cylinder body. Accordingly, such arrangement designing the cylinder body and the coil supporting member attains a simple structure, a simple manufacturing technique, a firm structure and high mechanical intensity.
  • the cylinder body can be a prism having four to six sides, especially a quadrangular prism whose cross-section is in a rectangular shape, whereby the cylinder body in this shape is easier to be processed.
  • the inner mounting plate and the outer mounting plate are made of a permeability magnetic material.
  • a magnetizing coil is sleeved on the inner mounting plate or/and the outer mounting plate.
  • a magnetic field line created by the magnetizing coil is formed in a closed annular shape along the inner mounting plate, the inner magnetic body, the outer magnetic body and the outer mounting plate. Accordingly, the magnetizing coil is sleeved on the inner mounting or/and the outer mounting plate, so an external magnetizing power supply in connection with the magnetizing coil magnetizes the inner magnetic body and the outer magnetic body to retrieve their intensity of magnetism when the intensity of magnetism of two magnetic bodies becomes lessened due to a long term of using the permanent magnet linear piston pump, thereby prolonging the duration of the permanent magnet linear piston pump.
  • a permanent magnet linear piston pump 3 of the present invention comprises a piston body 1, a cylinder body 2, a permanent magnet assembly 6 and an electromagnetic coil 3.
  • the cylinder body is in a shape of a polygonal prism, such as in a prism with four to six sides.
  • a quadrangular prism is adopted.
  • this preferred embodiment has a quadrangular cylinder body 2 whose cross-section is shaped by a rectangular contour.
  • An interior of the cylinder 2 arranges a piston cavity 201 formed by an axial columnar accommodating cavity.
  • the piston body 1 is arranged in the piston cavity 201 by a liquid sealing movable fit mode.
  • a cross-section of one end of the piston body 1 can be the same as the cross-section of the piston cavity 201. This end is inserted into the piston cavity 201 by the liquid sealing movable fit mode.
  • the piston body 1 is a prism whose cross-section is the same as the cross-section of the piston cavity 201.
  • the end of the piston body 1 is inserted into the piston cavity 201 by the liquid sealing movable fit mode; preferably, the other end thereof can arrange a supporting structure having an orientation effect.
  • a one-way inlet valve 4 and a one-way outlet valve 5 are disposed on an end face of the piston cavity 201 opposite to an end face of a piston.
  • a set of permanent magnet assembly 6 is disposed on at least one side surface of the cylinder body 2.
  • the permanent magnet assembly 6 includes an inner mounting plate 601 and an outer mounting plate 602 disposed parallel to the side surface of the cylinder body 2.
  • An inner magnetic body 603 and an outer magnetic body 604 are respectively disposed on opposite surfaces of the inner mounting plate 601 and the outer mounting plate 602, whereby the permanent magnet linear piston pump has a greater power.
  • One set of the permanent magnet assembly 6 is disposed on every side surface of the cylinder body 2.
  • a coil supporting member is disposed at an outside surface of the cylinder body 2. The arrangement of the coil supporting member is to space the electromagnetic coil 3 and the outside surface of the cylinder body apart by a distance in order that the inner mounting plate 601 and the inner magnetic body 603 can be placed in this space.
  • the electromagnetic coil 3 is axially and distributively wound around the coil supporting member into a barrel shape.
  • the cylinder body 2 can include a barrel unit and lids at two ends thereof. Sealing rings are respectively disposed between the lids at the two ends and two end faces of the barrel unit.
  • the barrel unit and the lids at the two ends are connected with each other by a plurality of axial shanks and nuts around an outer periphery of the barrel unit.
  • the shanks are located at every edge of the cylinder body 2.
  • the shanks construct the coil supporting member.
  • the cylinder body 2 and the coil supporting member of this arrangement are simple in structure and easier to manufacture and have lower costs although the mechanical intensity may be relatively lower. As shown in Fig.
  • ribs 202 are disposed on every edge of the cylinder body 2.
  • the ribs 202 construct the coil supporting member.
  • the ribs 202 can be extended throughout the full edge or extended to the part of the two ends where the electromagnetic coil 3 is wound.
  • the ribs 202 are disposed to allow the surface of the cylinder body 2 to have a sufficient space where the inner mounting plate 601 and the inner magnetic body 603 are placed.
  • the inner mounting plate 601 and the inner magnetic body 603 are disposed in a recess between the ribs 202 at two sides of a same side surface of the cylinder body 2.
  • the inner magnetic body 603 and the outer magnetic body 604 are disposed oppositely and provide contrary magnetic poles at opposite faces thereof.
  • An interstice is formed between the inner magnetic body 603 and the outer magnetic body 604.
  • the interstice can be lessened possibly to satisfy the coiling of the electromagnetic coil 3.
  • the electromagnetic coil 3 is axially and distributively wound around the ribs 202 of every edge into a barrel type. Alternatively, it can be wound around the ribs 202 on which a pad or a bracket is disposed in advance.
  • the electromagnetic coil 3 is disposed between the inner magnetic body 603 and the outer magnetic body 604.
  • the side surface of the cylinder body 2 where the permanent magnet assembly 6 is disposed forms an axial sliding slot 203.
  • a length of the sliding slot 203 is equal to a designed stroke length of the piston body 1.
  • a connecting post 101 is disposed on a side surface of the piston body 1 in a radial direction to fit in with the sliding slot 203 by a clearance fit mode.
  • the connecting post 101 penetrates through the sliding slot 203 to be connected to the inner mounting plate 601 and the outer mounting plate 602, thereby forming a linkage.
  • through holes are respectively formed on the inner mounting plate 601 and the outer mounting plate 602 to fit in with the connecting post 101 by a clearance fit mode.
  • the connecting post 101 penetrates through the sliding slot 203 and the through holes of the inner mounting plate 601 and the outer mounting plate 602 to be in connection with and in linkage with the inner mounting plate 601 and the outer mounting plate 602.
  • the piston body 1 is in the operating state during the reciprocating motion.
  • two permanent magnet linear piston pumps are formed in the same cylinder body 2. Referring to Figs. 5-7 , two parts of the columnar accommodating cavity in the cylinder body 2 are disposed symmetrically.
  • the piston body 1 is a prism whose cross-section is the same as the cross-section of the piston cavity 201.
  • the piston body 1 is disposed at a middle portion of the columnar accommodating cavity.
  • Two ends of the piston body 1 are in cooperation with the two parts of the columnar accommodating cavity by the liquid sealing movable fit mode respectively, whereby the two parts of the columnar accommodating cavity are respectively defined as a first piston cavity 2011 and a second piston cavity 2012, and the two ends of the piston body 1 are respectively defined as a first piston body 1a and a second piston body 1b.
  • a first one-way inlet valve 4a and a first one-way outlet valve 5a are disposed on an end face of the first piston cavity 2011 opposite to an end face of the first piston body 1a.
  • a second one-way inlet valve 4b and a second one-way outlet valve 5b are disposed on an end face of the second piston cavity 2012 opposite to an end face of the second piston body 1b.
  • the permanent magnet assembly 6, as shown in Figs. 7-9 includes an inner mounting plate 601 and an outer mounting plate 602 disposed parallel to the side surface of the cylinder body 2.
  • a first inner magnetic body 603a and a second inner magnetic body 603b are respectively and symmetrically disposed at two opposite end faces of the inner mounting plate 601.
  • a first outer magnetic body 604a and a second outer magnetic body 604b are respectively and symmetrically disposed at two ends of the outer mounting plate 602.
  • a first electromagnetic coil 3a and a second electromagnetic coil 3b are respectively and correspondingly disposed on ribs 202 at two sides of the cylinder body 2.
  • the inner mounting plate 601 and the inner magnetic body 603 are disposed in a recess between the ribs 202 at two sides of the same side surface of the cylinder body 2.
  • the first inner magnetic body 603a and the first outer magnetic body 604a at the two ends are disposed oppositely and provide contrary magnetic poles at opposite faces thereof.
  • the second inner magnetic body 603b and the second outer magnetic body 604b at the two ends are disposed oppositely and provide contrary magnetic poles at opposite faces thereof.
  • Interstices are respectively formed between the first inner magnetic body 603a and the first outer magnetic body 604a and between the second inner magnetic body 603b and the second outer magnetic body 604b. The interstice can be lessened possibly to satisfy the coiling of the electromagnetic coil 3.
  • the electromagnetic coil 3 is axially and distributively wound around the ribs 202 of every edge of the two ends of the cylinder body 2 into a barrel type. Alternatively, it can be wound around the ribs 202 on which a pad or a bracket is disposed in advance.
  • the electromagnetic coils 3 are respectively disposed between the first inner magnetic body 603a and the first outer magnetic body 604a and between the second inner magnetic body 603b and the second outer magnetic body 604b.
  • the side surface of the cylinder body 2 where the permanent magnet assembly 6 is disposed forms an axial sliding slot 203.
  • four permanent magnet assemblies 6 are respectively set on four side surfaces of the cylinder body 2, with four sliding slots 203 formed on the four side surfaces of the cylinder body 2 respectively.
  • a length of the sliding slot 203 is equal to a designed stroke length of the piston body 1.
  • Four connecting posts 101 are respectively disposed on four sides of the piston body 1 in a radial direction to fit in with the sliding slots 203 by a clearance fit mode.
  • the connecting posts 101 penetrate through the sliding slots 203 to be connected to the inner mounting plate 601 and the outer mounting plate 602, thereby forming a linkage.
  • this preferred embodiment forms through holes which are respectively formed on the inner mounting plate 601 and the outer mounting plate 602 to fit in with the connecting post 101 by a clearance fit mode.
  • the connecting posts 101 penetrate through the sliding slots 203 and the through holes of the inner mounting plate 601 and the outer mounting plate 602 to be in connection with and in linkage with the inner mounting plate 601 and the outer mounting plate 602.
  • the permanent magnet linear piston pump of the present invention can be magnetized.
  • the remaining structure of the magnetizing permanent magnet linear piston pump is the same as the first and the second preferred embodiments.
  • the inner mounting plate 601 and the outer mounting plate 602 are made of a permeability magnetic material.
  • a magnetizing coil 7 is sleeved on the inner mounting plate 601 or the outer mounting plate 602.
  • the magnetizing coil 7 of this embodiment is sleeved on the inner mounting plate 601 and the outer mounting plate 602.
  • the magnetizing coil 7 can be wound around a coil frame 8 of a " ⁇ " shape at first. Then, the inner mounting plate 601 or the outer mounting plate 602 can penetrate through the center of the coil frame 8. The coil frame 8 is fixed onto the cylinder body 2. A magnetic field line created by the magnetizing coil 7 is formed in a closed annular shape along the inner mounting plate 601, the inner magnetic body 603, the outer magnetic body 604 and the outer mounting plate 602.
  • the one-way inlet valve 4 and the one-way outlet valve 5 can be designed by using a diaphragm structure or by disposing a steel ball and a compression spring in the valve cavity. These arrangements can all satisfy the requirements.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Reciprocating Pumps (AREA)
EP12881862.2A 2012-07-27 2012-10-15 Lineare kolbenpumpe mit einem dauermagneten Not-in-force EP2878818B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201220368590XU CN202789501U (zh) 2012-07-27 2012-07-27 一种永磁直线活塞泵
PCT/CN2012/082961 WO2014015566A1 (zh) 2012-07-27 2012-10-15 一种永磁直线活塞泵

Publications (3)

Publication Number Publication Date
EP2878818A1 true EP2878818A1 (de) 2015-06-03
EP2878818A4 EP2878818A4 (de) 2016-05-11
EP2878818B1 EP2878818B1 (de) 2017-08-16

Family

ID=47816772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12881862.2A Not-in-force EP2878818B1 (de) 2012-07-27 2012-10-15 Lineare kolbenpumpe mit einem dauermagneten

Country Status (5)

Country Link
US (1) US20150125321A1 (de)
EP (1) EP2878818B1 (de)
CN (1) CN202789501U (de)
ES (1) ES2644928T3 (de)
WO (1) WO2014015566A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102748277B (zh) * 2012-07-27 2015-04-15 徐荣兰 一种永磁直线活塞泵

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375941A (en) * 1978-03-20 1983-03-08 Child Frank W Method and apparatus for pumping blood
DE2903817A1 (de) * 1979-02-01 1980-08-07 Siegfried Dr Ing Kofink Elektromagnetische kolbenpumpe fuer fluessige und gasfoermige medien
US4541787A (en) * 1982-02-22 1985-09-17 Energy 76, Inc. Electromagnetic reciprocating pump and motor means
CN2048903U (zh) * 1989-06-28 1989-12-06 孔昭琛 电控磁力泵
US6068588A (en) * 1999-01-07 2000-05-30 International Business Machines Corporation Counterbalanced pump
US6468057B1 (en) * 1999-09-13 2002-10-22 Douglas S. Beck Free piston pump
US6290640B1 (en) * 1999-11-02 2001-09-18 International Business Machines Corporation Uncoupled rotary linear pump
CA2335899A1 (en) * 2001-01-26 2002-07-26 Mohammed Mali Integrated linear motor-driven compressor with lubricant sump
CN1554868A (zh) 2003-12-23 2004-12-15 俞国淼 磁力直线活塞泵
US7721685B2 (en) * 2006-07-07 2010-05-25 Jeffrey Page Rotary cylindrical power device
CN101240793B (zh) * 2008-03-14 2011-04-27 刘新春 直线电机双缸压缩泵
KR20100062665A (ko) * 2008-12-02 2010-06-10 엘지전자 주식회사 냉장고
CN102748277B (zh) * 2012-07-27 2015-04-15 徐荣兰 一种永磁直线活塞泵

Also Published As

Publication number Publication date
EP2878818A4 (de) 2016-05-11
US20150125321A1 (en) 2015-05-07
ES2644928T3 (es) 2017-12-01
WO2014015566A1 (zh) 2014-01-30
EP2878818B1 (de) 2017-08-16
CN202789501U (zh) 2013-03-13

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