EP0096145B1 - Liquid pump - Google Patents

Liquid pump Download PDF

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Publication number
EP0096145B1
EP0096145B1 EP82830257A EP82830257A EP0096145B1 EP 0096145 B1 EP0096145 B1 EP 0096145B1 EP 82830257 A EP82830257 A EP 82830257A EP 82830257 A EP82830257 A EP 82830257A EP 0096145 B1 EP0096145 B1 EP 0096145B1
Authority
EP
European Patent Office
Prior art keywords
elastic
liquid
plunger
balls
alveolar
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.)
Expired
Application number
EP82830257A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0096145A1 (en
Inventor
Giovanni Cefis
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
Priority to AT82830257T priority Critical patent/ATE36380T1/de
Publication of EP0096145A1 publication Critical patent/EP0096145A1/en
Application granted granted Critical
Publication of EP0096145B1 publication Critical patent/EP0096145B1/en
Expired 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
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F7/00—Pumps displacing fluids by using inertia thereof, e.g. by generating vibrations therein

Definitions

  • the invention concerns a preferably hand operated liquid pump.
  • Known liquid pumps function based on the creation and preservation of an oscillating motion in the liquid in the tubing connecting the initial location of the liquid with the point where said liquid must be transferred.
  • These pumps provide for an elastic organ consisting of pieces of tubing of traditional elastic material, rubber and india rubber (EP-A-0048224), or of spring powered pistons, or of compressed air capsules.
  • the elastic material tubing limits the high pressure levels, and so the capacity and maximum lift possible at levels compatible with the mechanical resistance of the elastic materials used.
  • the spring powered pistons can operate for limited periods only due to the wear and tear on the piston gaskets, and the compressed air capsules require frequent maintenance to renew the air pressure.
  • pumps providing, instead of the valves, a conical passage and an elastic expansion chamber, like in FR-A-1 419 825, said chamber contains a body of alveolar elastic rubber with closed cells.
  • said pumps is electromagnetic and not manual, the delivery pressure will be overcome by the system according to the present invention.
  • the elastic organ consisting of alveolar material, coated with a layer of non-alveolar material, thus allowing the use of a wide range of alveolar material, being kept free and fluctuant, allows a perfect, even and regular stress of hydrostatic kind, and thus improves the duration of the material.
  • the figures show container A equipped with threaded top C, respectively provided with connection tubings B and D; on the inside of container A there are four balls G of alveolar elastic material, such as polyethylene with a cellular structure, or neoprene with a cellular structure or the like, enclosed in elastic protective casing H; the small bars or the like, E and F, prevent the spheres from obstructing tubings B and D, a check valve L being applied to tubing B and tubing T being applied to tubing D to connect to the body of the pump Q, with hydraulic plunger N at the outlet P with one or more small washing openings X in its bottom, the manual operation lever M, the pans R to position and hold the rimmed gasket O, the three, four or more circular or polygonal cylindrical guides S rotating to allow any adjustment, to prevent wear and tear, around the bolts U with threaded ends protruding from the body of the pump where the tightening nuts V are screwed on, the two or more guiding and centering
  • the invention functions as follows: when container A is immersed in the liquid to be pumped and when the body of the pump Q, tubing T and container A are filled with liquid, operation of the hydraulic plunger N by means of lever M sends pressurized liquid through tubing T into container A; this liquid under pressure compresses the balls G which, thanks to being made of elastic material with an alveolar structure, that is with internal cavities, can be distorted to effect an overall reduction in volume and the accumulation of elastic potential energy, where the variation in volume of the balls is related to the pressure of the liquid, to the elastic properties of the basic material used in construction, to the ratio between the empty and filled spaces in the alveolar structure and to the initial volume of said balls.
  • the plunger is raised to release gasket O, the compressed balls expand to expel a volume of water from the container equal to that put previously, and that is equal to the variation in volume of the compressed balls, and sends said volume in tubing T with a kinetic energy resulting from the elastic energy imparted to the balls in the compression phase.
  • the mass of elastic alveolar material may be concentrated in a different number of balls rather than four, for instance, in one ball only as in Fig. 2, or in balls shaped differently (lengthened or non- spherical) as in Fig. 3, identical in function, or in several bodies of any shape.
  • the bodies of elastic material with an alveolar structure are enclosed in covering of non-alveolar elastic material, of the same chemical nature or not, both to protect the principle elastic material from chemical attack of the liquid and to prevent the danger that over time the liquid penetrates in the cavities of elastic mass, thus lowering its capacity to change volume.
  • the wear and tear of the plunger N and the lip of gasket O reduces the flexibility and usable length of the large lip of the gasket 0; when the lip becomes too worn the gasket 0 may be mounted in such a way as to operate on the other not yet worn lip.
  • wear and tear of the three, four or more guides may be obviated by rotating them to another position around the pins U of said guides, so that a new, unconsumed part is presented to the plunger.
  • This rotation may be effected several times before guides 5 need to be replaced, and is performed by loosening the nuts V which, once the guides are rotated, are then tightened to hold the guides in the new position, by means of a small elastic deformation in the body of the pump Q.
  • a marked advantage of the invention is the fact that the overall elastic property may be obtained exactly as desired by selecting the initial volume of the balls, their number, the ratio between hollow and filled spaces, and a more or less elastic base material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP82830257A 1982-06-03 1982-10-14 Liquid pump Expired EP0096145B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82830257T ATE36380T1 (de) 1982-06-03 1982-10-14 Fluessigkeitspumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4857282 1982-06-03
IT48572/82A IT1148574B (it) 1982-06-03 1982-06-03 Pompa per liquidi

Publications (2)

Publication Number Publication Date
EP0096145A1 EP0096145A1 (en) 1983-12-21
EP0096145B1 true EP0096145B1 (en) 1988-08-10

Family

ID=11267401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830257A Expired EP0096145B1 (en) 1982-06-03 1982-10-14 Liquid pump

Country Status (4)

Country Link
EP (1) EP0096145B1 (it)
AT (1) ATE36380T1 (it)
DE (1) DE3278884D1 (it)
IT (1) IT1148574B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6697377B1 (en) 2000-10-21 2004-02-24 Innomedia Pte Ltd. Method for communicating audio data in a packet switched network

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE170219C (it) *
GB443565A (en) * 1934-08-01 1936-03-02 Gilbert Gilkes And Gordon Ltd Improvements in pumps
GB492530A (en) * 1937-03-19 1938-09-19 Richard Harland Dickinson Improvements in or relating to pumps for liquids
FR972722A (fr) * 1941-04-03 1951-02-02 Olaer Marine Procédé et appareil de pompage
DE1277020B (de) * 1961-07-14 1968-09-05 Dr Friedrich Wenk Pumpe zum Heben von Fluessigkeiten aus grosser Tiefe
FR1419825A (fr) * 1964-10-21 1965-12-03 Guinard Pompes Pompe alternative sans clapet
IT1129030B (it) * 1980-09-12 1986-06-04 Giovanni Cefis Pompa per liquidi

Also Published As

Publication number Publication date
ATE36380T1 (de) 1988-08-15
IT8248572A0 (it) 1982-06-03
EP0096145A1 (en) 1983-12-21
DE3278884D1 (en) 1988-09-15
IT1148574B (it) 1986-12-03

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