EP0014754B1 - Pompe pulvérisatrice - Google Patents

Pompe pulvérisatrice Download PDF

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Publication number
EP0014754B1
EP0014754B1 EP79104906A EP79104906A EP0014754B1 EP 0014754 B1 EP0014754 B1 EP 0014754B1 EP 79104906 A EP79104906 A EP 79104906A EP 79104906 A EP79104906 A EP 79104906A EP 0014754 B1 EP0014754 B1 EP 0014754B1
Authority
EP
European Patent Office
Prior art keywords
piston
pump
servo
cylinder
cylinder portion
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
EP79104906A
Other languages
German (de)
English (en)
Other versions
EP0014754A1 (fr
Inventor
Hans Ing.-Grad Grothoff
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.)
Silgan Dispensing Systems Hemer GmbH
Original Assignee
Calmar Albert GmbH
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 Calmar Albert GmbH filed Critical Calmar Albert GmbH
Priority to AT79104906T priority Critical patent/ATE5568T1/de
Publication of EP0014754A1 publication Critical patent/EP0014754A1/fr
Application granted granted Critical
Publication of EP0014754B1 publication Critical patent/EP0014754B1/fr
Expired 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
    • B05B11/01—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
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve

Definitions

  • the invention relates to an atomizer pump for batch-wise spraying and application of liquid preparations for cosmetic and technical purposes, consisting of a cap which is matched to the respective liquid container and in which a graduated pump cylinder, which is provided with a riser pipe towards the liquid container, is arranged within the larger diameter Pump cylinder section is an axially movable pump piston which seals over lips for cylinder movement, the piston shaft of which penetrates a bore in the cap and is provided with an atomizer head which is plugged onto the shaft end and is connected to the space below the pump piston via an axial bore of the piston shaft, the axial bore of the pump piston through the extension of a one - piece servo piston arranged in the smaller diameter pump cylinder section and sealed by a Dr uck a biased spring acting on this is closed until when the pump piston is actuated via the atomizer head of the servo piston due to the greater liquid displacement of the pump piston executes a relative movement to the latter, with a communicating connection of the space in the larger-diameter
  • the servo piston has a valve which opens in the conveying direction and which is shown in two different designs in the document mentioned.
  • a ball that is freely movable within a space in the servo piston and loosely seated on a bore connecting the cylinder spaces
  • the servo piston with a very thin-walled elastic sealing lip that comes into contact with the cylinder wall in the pressure area. seal it and lift it off the cylinder wall in the vacuum area and allow the liquid to flow into the space between the pump and servo pistons.
  • the proposal with the flexible, thin-walled sealing lip is not practical in that it has been found that such an extremely thin sealing lip cannot be reliably produced in series and that such a sealing lip does not have sufficient stability within the scope of the internal pressures occurring with these pumps Cylinder wall and servo piston jammed and negatively affects the function of the pump.
  • the ball version can be manufactured and is capable of working, but it has severe economic disadvantages, since the servo piston consists of at least three components which have to be preassembled in a separate process before the pump is actually assembled, which in addition to additional quality impairments, particularly increases the production costs Increase the pump and its competitiveness is reduced.
  • FIG. 1 Another known atomizing piston pump of the type listed in the preamble of claim 1 of the invention is known from DT-A-27 13 447 (Fig. 4).
  • the servo piston is made in one piece, but does not itself have any sealing lips, but the intention is to be produced by an annular constriction in the area of the small cylinder. This arrangement is disadvantageous for a number of reasons.
  • the servo piston Since the servo piston is not guided in the small cylinder in the rest position of the pump, but is free to it, there is mutual deformation between the annular constriction of the cylinder and the servo piston when lateral forces occur due to swelling or release of internal stresses in the plastic material Depending on the material composition of the two parts, the result is that the pump either catches when it is actuated or that a complete tight seal between the servo piston and the constriction can no longer be established.
  • the invention has set itself the task of creating an atomizer pump which can be economically manufactured with a minimum of components with practical tolerance ranges in mass production and whose operational reliability, in the event of swelling or other deformation due to internal stresses released by the components in the area of Servo piston, remains unaffected.
  • the invention solves this problem in that the servo piston is formed in one piece with the lip seal and is guided in the smaller-diameter pump cylinder section by a lip-like elastic guide part, which is also in the upper, unactuated position of the pump piston in the smaller-diameter pump cylinder section, and in that the communicating one Connection consists of openings which are formed when the lip seal is used as a guide part in the upper part of the wall of the smaller-diameter pump cylinder section or with a separate guide part and in the upper, unactuated position of the free-standing lip seal in the guide part.
  • the guide member and sealing lip of the servo piston are identical. This ensures that swelling of the sealing lip of the servo piston and released internal stresses due to the fact that the sealing lip remains in the cylinder bore of the small cylinder cannot have a negative effect on the pump function, even when the pump is at rest, since the resulting increased preload of the sealing lip automatically occurs a permanent deformation of the plastic material in the area of the sealing lip is reduced to a complete sealing of this against the wall of the small cylinder sufficient residual tension and jamming of the servo piston in the cylinder or stiffness of the pump cannot occur.
  • the sealing lip of the servo piston thus automatically adapts to the swelling that occurs.
  • Another solution according to the invention consists in arranging a sealing lip that is free from the wall of the small cylinder section above the guide member that remains in cylinder engagement in the rest position of the pump and is provided with openings or recesses.
  • the higher swelling sensitivity of the sealing lip given this arrangement since in this case it does not have to perform a guiding and centering function, can be reduced to a level sufficient for practical use that the wall thickness of the sealing lip is reduced so far. how the pressure conditions in the pump allow this.
  • the arrangement has the economic advantage that only changes to the servo piston and not also to the cylinder are necessary in existing production facilities and tools.
  • the pump stroke required for tight sealing of the servo piston in the small cylinder section is at least 0.2 mm.
  • Fig. 1 shows a nebulizer pump, consisting of a screw cap 1 provided with a thread for screwing onto a liquid container (not shown) 2, in which a cylinder 3 is fixed by a flange 4 by means of holding claws 5 and the spray head 6 with the outlet nozzle 7 and that in the cylinder attached riser pipe 8.
  • the seal 9 which is in contact with the cylinder and provided with openings, is used to seal the pump from the liquid container.
  • a pump piston 10 is arranged in part 3 'of the cylinder. the piston shaft 11 of which passes through a bore 12 in the cap 2, seals it in the rest position by means of the conical extension 13, and the spray head 6 is placed over its shaft end 14.
  • the pressure equalization between the interior of the container and the atmosphere takes place when the pump is activated via the bore 12 and the channels 15, 15 '.
  • the sealing lip 16 of the pump piston rests with a prestress on the cylinder wall and shuts off the cylinder chamber 17 towards the top.
  • the piston shaft has an axial bore 18 which narrows at the lower end to a smaller, stepped bore 19 and is closed by the conical tip 20 of the servo piston 21 by the force of the prestressed spring 22 acting thereon.
  • the servo piston has a circumferential elastic sealing lip 23 which is arranged within the smaller-diameter cylinder section 3 ′′. At the transition from the larger to the smaller cylinder section there are channel-like recesses 25 in the wall of the extension 24 of the smaller cylinder.
  • the length of the individual components of the pump is adjusted so that the sealing lip of the servo piston in the rest position of the pump is arranged in the area of these recesses, thereby connecting the cylinder chamber 17 to the cylinder chamber 26 below the servo piston and continuing through the cylinder bore 27 and the bore 28 of the riser pipe 8 is produced with the liquid in the liquid container (not shown), starting from a pump which is in the rest position and filled with liquid, when the pump is actuated by exerting pressure on the spray head, the latter moves with the pump piston 10 and the servo piston 21 against the spring force down.
  • the pump piston displaces liquid via the channel-like recesses 25 from the cylinder space 17 back into the liquid container until the sealing lip 23 of the servo piston has run out of the region of the recesses and has a fully sealing effect on the cylinder wall. Since the pump piston displaces more volume than is released with the same axial movement of the servo piston in space in the small cylinder, the pump piston of the servo piston reacts with an additional evasive movement counter to the spring force, as a result of which the sealing cone 20 of the servo piston is raised from the bore 19 of the pump piston 10 , The liquid is conveyed through the axial bore 18 into the spray head 6 and is sprayed through the nozzle bore 30 after swirling through the tangential channels 29.
  • FIGS. 2 to 4 which are shown in the form of sections from FIG. 1, correspond in their functional behavior to the preceding description and represent further possible embodiments according to the inventive concept.
  • FIG. 2 differs from FIG. 1 only in that the channel-like recesses 31 fully penetrate the extension 24 of the smaller cylinder section, which means that the liquid has a higher inflow velocity and thus a faster filling of the cylinder space 17 due to the enlargement of the passage area.
  • the smaller cylinder section itself has no openings or recesses.
  • the connection of the two cylinder spaces is ensured by a lip-shaped guide member 34 on the servo piston provided with openings 33, which remains in the rest position of the pump in the area of the wall of the small cylinder, while the sealing lip 35 arranged above the guide member makes no contact in this position Has wall of the small cylinder, but is free within the cylinder space 17 and allows an unhindered communication between the two cylinder spaces until an annular surface 36 until the sealing lip 35 comes into contact with the inner surface of the small cylinder during the downward movement of the servo piston.

Landscapes

  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (6)

1. Pompe de pulvérisateur destinée à pulvériser et à appliquer de façon intermittente des préparations liquides composées d'un chapeau (2) adapté au récipient de liquide correspondant, dans lequel est disposé un cylindre de pompe (3) échelonné muni, en direction de liquide, d'un tube montant (8) et dans lequel est emboîté, à l'intérieur d'un segment de plus grand diamètre de cylindre de pompe (3'), un piston de pompe (10) mobile dans la direction axiale, mis en contact étanche avec la paroi du cylindre par des lèvres (16), dont la tige de piston (11) traverse un alésage (12) du chapeau (2) et est munie d'une tête de pulvérisateur (6) montée sur l'extrémité de la tige et qui est en communication par un alésage axial (18) de la tige de piston (11) avec la chambre (17) située au-dessous du piston de pompe (10), l'alésage axial (18) du piston (10) de la pompe étant fermé par un prolongement d'un servo-piston (21) en une seule pièce disposé dans un segment (3") de plus petit diamètre du cylindre de pompe, et mis en contact étanche avec la paroi du cylindre au moyen d'une garniture d'étanchéité à lèvre (23, 35), sous la pression d'un ressort (2) précontraint, qui agit sur ce servo-piston, jusqu'à ce que, lorsqu'on actionne le piston de pompe (10) par l'intermédiaire de la tête de pulvérisateur (6) le servo-piston (21) décrive en raison du plus grand déplacement de liquide du piston (10) de la pompe, un mouvement relatif par rapport à ce dernier, cependant que, dans la position haute non actionnée du piston (10) de la pompe, il est prévu une liaison de communication entre la chambre (17) située à l'intérieur du segment de plus grand diamètre (3') du cylindre de la pompe entre le piston de la pompe et le servo-piston (10, 21) et la chambre (26) située au-dessous du servo-piston (21), avec guidage simultané du servo-piston (21) caractérisée en ce que le servo-piston (21) est réalisé d'une seule pièce avec la garniture d'étanchéité à lèvre (23, 35) et est guidé dans le segment de plus petit diamètre (3") du cylindre de la pompe, dans la position haute non actionnée du piston (10) de la pompe et en ce que la liaison communiquante est constituée par des ouvertures (25, 31, 32, 33) qui, lorsque la garniture d'étanchéité à lèvre (23) est utilisée en même temps comme organe de guidage sont formées dans la partie supérieure de la paroi du segment de plus petit diamètre (3") du cylindre de la pompe et qui dans le cas d'un organe de guidage (34) séparé et d'une garniture d'étanchéité à lèvre (35) en saillie libre dans la position haute, non actionnée, sont formées dans l'organe de guidage (34).
2. Pompe à piston de pulvérisateur selon la revendication 1, caractérisée ce que l'organe de guidage et la lèvre d'étanchéité (23) du servo-piston (21) sont identiques.
3. Pompe à piston de pulvérisateur selon les revendications 1 et 2, caractérisée en ce que la liaison entre les chambres (17, 26) situées entre le piston de la pompe et le servo-piston (10, 21) et situées au-dessous du servo-piston est assurée par des évidements (31) en forme de canaux ménagés dans la partie supérieure de la paroi (3") du petit segment de cylindre, en contournant la portée d'étanchéité de la lèvre d'étanchéité (23) du servo-piston (21).
4. Pompe à piston de pulvérisateur selon les revendications 1 et 2, caractérisée en ce que les chambres (17, 26) du cylindre sont reliées entre elles par l'intermédiaire d'ouvertures (23, 32) disposées au-dessous de la portée d'étanchéité de la lèvre d'etanchéité (23) du servo-piston (21) dans la paroi du petit cylindre.
5. Pompe à piston de pulvérisateur selon la revendication 1, caractérisée en ce que, au-dessus de l'organe de guidage (34) muni d'ouvertures ou échancrures (33) est disposée une lèvre d'étanchéité (35) en saillie libre sur la paroi du petit segment de cylindre et constituée par une partie du servo-piston (21).
6. Pompe à piston de pulvérisateur selon l'une des revendications 1 à 5, caractérisée en ce que la course du piston nécessaire pour déterminer la formation d'un joint étanche du servo-piston (21) dans le petit segment (3") du cylindre est d'au moins 0,2 mm.
EP79104906A 1979-02-17 1979-12-04 Pompe pulvérisatrice Expired EP0014754B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79104906T ATE5568T1 (de) 1979-02-17 1979-12-04 Zerstaeuberpumpe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2906234 1979-02-17
DE2906234A DE2906234C2 (de) 1979-02-17 1979-02-17 Zerstäuberkolbenpumpe

Publications (2)

Publication Number Publication Date
EP0014754A1 EP0014754A1 (fr) 1980-09-03
EP0014754B1 true EP0014754B1 (fr) 1983-12-14

Family

ID=6063253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104906A Expired EP0014754B1 (fr) 1979-02-17 1979-12-04 Pompe pulvérisatrice

Country Status (4)

Country Link
EP (1) EP0014754B1 (fr)
AT (1) ATE5568T1 (fr)
DE (1) DE2906234C2 (fr)
ES (1) ES488637A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3715301A1 (de) * 1987-05-08 1988-11-24 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung fuer medien
US5020696A (en) * 1989-11-27 1991-06-04 Rjs Industries, Inc. Atomizing fluid dispenser two
US5388766A (en) * 1993-09-22 1995-02-14 The Procter & Gamble Company High pressure atomization systems for high viscosity products
DE29908435U1 (de) * 1999-05-11 1999-08-05 Krewel Meuselbach GmbH, 53783 Eitorf Dosiervorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290043B (de) * 1966-03-12 1969-02-27 Albert Rudolf Zerstaeuberpumpe, insbesondere fuer Parfuem oder andere kosmetische Fluessigkeiten
JPS5738307B2 (fr) * 1973-11-07 1982-08-14
FR2305241A2 (fr) * 1975-03-28 1976-10-22 Step Soc Tech Pulverisation Perfectionnements apportes aux vaporisateurs
US4274560A (en) * 1976-04-30 1981-06-23 Emson Research Incorporated Atomizing pump dispenser
DE2818724A1 (de) * 1978-04-28 1979-11-08 Seltmann Hans Juergen Ausgabepumpe, insbesondere zum zerstaeuben von fluessigkeiten
DE2825428A1 (de) * 1978-06-09 1979-12-13 Seltmann Hans Juergen Ausgabepumpe, insbesondere zum zerstaeuben von fluessigkeiten
FR2429338A1 (fr) * 1978-06-19 1980-01-18 Aerosol Inventions Developmant Pompe a amorcage rapide pour vaporisateur
FR2433982A1 (fr) * 1978-08-23 1980-03-21 Mitani Valve Co Ltd Atomiseur a pompe

Also Published As

Publication number Publication date
ATE5568T1 (de) 1983-12-15
DE2906234C2 (de) 1986-01-02
ES488637A1 (es) 1980-09-16
EP0014754A1 (fr) 1980-09-03
DE2906234A1 (de) 1980-08-21

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