EP0686434A2 - Pumpe zum Verteilen von Flüssigkeiten unter Druck - Google Patents

Pumpe zum Verteilen von Flüssigkeiten unter Druck Download PDF

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Publication number
EP0686434A2
EP0686434A2 EP95103728A EP95103728A EP0686434A2 EP 0686434 A2 EP0686434 A2 EP 0686434A2 EP 95103728 A EP95103728 A EP 95103728A EP 95103728 A EP95103728 A EP 95103728A EP 0686434 A2 EP0686434 A2 EP 0686434A2
Authority
EP
European Patent Office
Prior art keywords
stem
cup
cavity
shaped body
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Withdrawn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
EP95103728A
Other languages
English (en)
French (fr)
Other versions
EP0686434A3 (de
Inventor
Tommaso Ruscitti
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.)
Ter Srl
Original Assignee
Ter Srl
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 Ter Srl filed Critical Ter Srl
Publication of EP0686434A2 publication Critical patent/EP0686434A2/de
Publication of EP0686434A3 publication Critical patent/EP0686434A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps

Definitions

  • This invention relates to a pump of simplified structure, for delivering pressurized fluids.
  • the main object of the present invention is to provide a pump consisting of an extremely small number of component parts which can be assembled very simply, resulting in a pump of very low cost.
  • a pump comprising a cup-shaped body into which there is inserted, in a manner able to undergo translational movement, one end of a hollow stem carrying a piston slidable in a sealed manner against the inner surface of the cup-shaped body, the stem being urged by a spring housed in the cup-shaped body towards the open end of said body, within which it is retained by a locking ring cap superposed on the mouth of the cup-shaped body, which is provided with a hole intercepted by a suction valve and connectable to a dip tube, on the other end of the stem there being mounted a fluid delivery head with a discharge hole communicating with the cavity within the stem via a discharge valve, characterised in that said stem has substantially the shape of a hollow tube open at that end which lies within the cup-shaped body and from which there projects said slidable piston, which is formed in one piece with the stem, said discharge valve consisting of a flexible endless lip also formed in one piece with the stem, from the other end of which it projects to close
  • the pump comprises a cup-shaped body 1 into which there extends, in a manner able to undergo translational movement, a hollow stem 2 from the lower end (relative to the figure) of which there projects a piston 3 which is slidable in a sealed manner against the inner cylindrical wall of the cup-shaped body.
  • the stem 2 is urged upwards by a spring 4 acting against longitudinal ribs or fins 5 (the length of which determines the pump capacity) projecting into the cavity within the stem, the lower end of which is freely open.
  • the stem is retained by a ring cap 6 which is mounted and snap-locked on the mouth of the cup-shaped body.
  • a feed hole intercepted by a suction valve consisting of a plug 7 with a flexible endless seal lip.
  • a dip tube 8 which extends (in conventional manner) into a bottle or the like containing the fluid to be delivered after applying the pump.
  • a head 9 On the free end of the stem 2 (that facing upwards on the drawing) there is mounted a head 9 provided with an internal cavity 10 which, via channels 11, communicates with a turbulence chamber 12 defined by a shaped insert 13 housed in a seat provided in said head, in the insert there being provided a discharge hole connecting the chamber 12 to the outside.
  • the top of the stem 2 is shaped to form a discharge valve consisting of a flexible endless lip 15 which bears and seals (when in the rest state) against the opposing wall of the cavity 10 in the head 9.
  • the pump is mounted (and retained in position by any known system, for example by a ring nut or a bush) on the mouth of a bottle containing a liquid into which the dip tube 8 dips.
  • the head 9 is now lowered (relative to the finger) against the action of the spring 4, hence pressurizing the liquid until it deforms the lip 15, which withdraws from the opposing surface of the cavity 10 so that the pressurized liquid passes through the cavity 10, the channels 11 and the turbulence chamber 12, to be expelled to the outside in finely atomized form through the discharge hole 14.
  • the liquid present in the cup-shaped body cannot flow back into the bottle, this being prevented by the plug 7.

Landscapes

  • Jet Pumps And Other Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Closures For Containers (AREA)
EP95103728A 1994-05-30 1995-03-15 Pumpe zum Verteilen von Flüssigkeiten unter Druck Withdrawn EP0686434A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI941110A IT1269860B (it) 1994-05-30 1994-05-30 Pompetta a struttura semplificata, per l'erogazione di fluidi sotto pressione
ITMI941110 1994-05-30

Publications (2)

Publication Number Publication Date
EP0686434A2 true EP0686434A2 (de) 1995-12-13
EP0686434A3 EP0686434A3 (de) 1996-06-12

Family

ID=11369014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103728A Withdrawn EP0686434A3 (de) 1994-05-30 1995-03-15 Pumpe zum Verteilen von Flüssigkeiten unter Druck

Country Status (2)

Country Link
EP (1) EP0686434A3 (de)
IT (1) IT1269860B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0867232A3 (de) * 1997-03-28 1999-04-14 SAR S.p.A. Mikropumpe mit einem Dosierventil zur Vernebelung von Fluiden
EP0867231A3 (de) * 1997-03-28 1999-04-14 SAR S.p.A. Mikropumpe zur Vernebelung von Fluiden
DE102010020726A1 (de) * 2010-05-17 2011-11-17 Inotech Kunststofftechnik Gmbh Mehrkomponentenförderelement für Spendervorrichtungen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046495A (en) * 1976-09-30 1977-09-06 Grimm Jr Bruce F Dispenser pump
WO1985005572A1 (en) * 1984-06-01 1985-12-19 Bundschuh Robert L Pump dispenser with slidable trigger

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046495A (en) * 1976-09-30 1977-09-06 Grimm Jr Bruce F Dispenser pump
WO1985005572A1 (en) * 1984-06-01 1985-12-19 Bundschuh Robert L Pump dispenser with slidable trigger

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6016974A (en) * 1997-03-27 2000-01-25 Sar S.P.A. Micropump for the nebulization of fluids with enhanced metering valve
EP0867232A3 (de) * 1997-03-28 1999-04-14 SAR S.p.A. Mikropumpe mit einem Dosierventil zur Vernebelung von Fluiden
EP0867231A3 (de) * 1997-03-28 1999-04-14 SAR S.p.A. Mikropumpe zur Vernebelung von Fluiden
US6003737A (en) * 1997-03-28 1999-12-21 Sar S.P.A. Enhanced micropump for the nebulization of fluids
DE102010020726A1 (de) * 2010-05-17 2011-11-17 Inotech Kunststofftechnik Gmbh Mehrkomponentenförderelement für Spendervorrichtungen
DE102010020726B4 (de) * 2010-05-17 2016-11-24 Inotech Kunststofftechnik Gmbh Mehrkomponentenförderelement für Spendervorrichtungen

Also Published As

Publication number Publication date
IT1269860B (it) 1997-04-15
EP0686434A3 (de) 1996-06-12
ITMI941110A1 (it) 1995-11-30
ITMI941110A0 (it) 1994-05-30

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