EP0173661A2 - Flüssigkeitspumpe - Google Patents

Flüssigkeitspumpe Download PDF

Info

Publication number
EP0173661A2
EP0173661A2 EP85850232A EP85850232A EP0173661A2 EP 0173661 A2 EP0173661 A2 EP 0173661A2 EP 85850232 A EP85850232 A EP 85850232A EP 85850232 A EP85850232 A EP 85850232A EP 0173661 A2 EP0173661 A2 EP 0173661A2
Authority
EP
European Patent Office
Prior art keywords
tube
fluid
tubular member
tubular
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85850232A
Other languages
English (en)
French (fr)
Other versions
EP0173661A3 (de
Inventor
Ulf Jöran Lagne
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.)
Institut Cerac SA
Original Assignee
Institut Cerac SA
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 Institut Cerac SA filed Critical Institut Cerac SA
Publication of EP0173661A2 publication Critical patent/EP0173661A2/de
Publication of EP0173661A3 publication Critical patent/EP0173661A3/de
Withdrawn legal-status Critical Current

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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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10—Pumps having fluid drive

Definitions

  • the present invention relates to a fluid pump which advantageously can be used for pumping a variety of fluids.
  • the present invention proposes a fluid pump which is cheap and reliable and which is light and does not need to be fixed in space.
  • the pump can, therefore, be hung in the conduit through which the fluid is delivered.
  • fig 1 illustrates one embodiment of the invention.
  • Fig 2 shows a section through a tubular etement used in the invention.
  • Fig 3 shows an alternative of a detail of fig 1.
  • the fluid pump shown in fig 1 comprises a tubular member 31 provided with a first end piece 32 and a second end piece 34.
  • the interior of tubular member 31 forms a pump chamber.
  • the second end piece is provided with an inlet valve 35 in inlet channel 36 through which fluid to be pumped is entered into the pump chamber.
  • An outlet valve 37 is provided in outlet channel 38 through which fluid is delivered from the pump chamber to conduit 39 which leads to a suitable delivery point.
  • First end piece 32 is provided with threads 33 which are connected with threads 26 in first end piece 25 of tube member 21.
  • Tube member 21 is further provided with a second end piece 22, which is provided with threads 23 cooperating with a nut 24.
  • a tube 11 is provided between end piece 34 and nut 24 in order to keep the second ends 22,34 of the tube and tubular members at a fixed distance from one another.
  • the interior of tube member 21 is through a conduit 13 connected to a fluid pressure source 12 of variable pressure.
  • Tube member 21 the same is valid for tubular member 31, comprises a tube 41 in which reinforcing threads 42 are embedded. Threads 42 extend helically along the tube at a pitch angle v. The threads extend in both directions. If the angle v is greater than arccot(sqrt(2)). approx 35.3° a decrease in the length of the tube member caused by pressurization of the interior of the tube member results in an increase of the volume of the tube member. If on the other hand angle v is smaller than the above mentioned value a decrease in length results in a decrease in volume.
  • Pumping is accomplished by pressurization and depressurization of the interior of tube member 21. This makes the first end 25 move relative to the second end 22 of tube member 21. The first end 32 of tubular member 31 is moved together with first end 25 of tube member 21. In this way the length and thus the volume of tubular member 31 is changed to accomplish the pumping.
  • FIG. 3 In fig 3 an alternative connection between tube member 21 and tubular member 31 is shown.
  • the two members are made from a common tube 41.
  • a cylindrical piece 43 is inserted into the tube and damped in place by a ring 44.
  • the distance between the second ends 22 and 3 4 o tube member 21 and tubular member 31 can be adjustec by means of nut 24. In this way it is possible to adjust the pump for pumping with different counterpressures in condui 39.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP85850232A 1984-08-01 1985-07-10 Flüssigkeitspumpe Withdrawn EP0173661A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3713/84 1984-08-01
CH371384A CH657669A5 (fr) 1984-08-01 1984-08-01 Pompe a fluide.

Publications (2)

Publication Number Publication Date
EP0173661A2 true EP0173661A2 (de) 1986-03-05
EP0173661A3 EP0173661A3 (de) 1987-01-14

Family

ID=4261907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85850232A Withdrawn EP0173661A3 (de) 1984-08-01 1985-07-10 Flüssigkeitspumpe

Country Status (3)

Country Link
EP (1) EP0173661A3 (de)
JP (1) JPS61106987A (de)
CH (1) CH657669A5 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005002646A1 (en) * 2003-07-01 2005-01-13 Ntu Ventures Private Limited Pump

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464095A (en) * 1945-02-07 1949-03-08 William L Nies Pump
GB1497712A (en) * 1975-01-06 1978-01-12 Vergnet M Pumps
GB1574278A (en) * 1978-05-09 1980-09-03 Berelson R Additive pumping unit for liquids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7118356B2 (en) 2002-10-02 2006-10-10 Nanyang Technological University Fluid pump with a tubular driver body capable of selective axial expansion and contraction
WO2005002646A1 (en) * 2003-07-01 2005-01-13 Ntu Ventures Private Limited Pump

Also Published As

Publication number Publication date
CH657669A5 (fr) 1986-09-15
JPS61106987A (ja) 1986-05-24
EP0173661A3 (de) 1987-01-14

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Inventor name: LAGNE, ULF JOERAN