EP1327477A1 - A force and suction pump actuator for spraying of a product from a container - Google Patents

A force and suction pump actuator for spraying of a product from a container Download PDF

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Publication number
EP1327477A1
EP1327477A1 EP03000193A EP03000193A EP1327477A1 EP 1327477 A1 EP1327477 A1 EP 1327477A1 EP 03000193 A EP03000193 A EP 03000193A EP 03000193 A EP03000193 A EP 03000193A EP 1327477 A1 EP1327477 A1 EP 1327477A1
Authority
EP
European Patent Office
Prior art keywords
valve closure
closure piece
product
actuating head
outlet channel
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
EP03000193A
Other languages
German (de)
French (fr)
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EP1327477B1 (en
Inventor
Ettore Masuzzo
Stefan Christ
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.)
Aero Pump GmbH
Original Assignee
Aero Pump GmbH
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Filing date
Publication date
Application filed by Aero Pump GmbH filed Critical Aero Pump GmbH
Publication of EP1327477A1 publication Critical patent/EP1327477A1/en
Application granted granted Critical
Publication of EP1327477B1 publication Critical patent/EP1327477B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0062Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007Outlet 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005Components or details
    • B05B11/0062Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0072A valve member forming part of an outlet opening
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01Single-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
    • B05B11/10Pump 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
    • B05B11/1001Piston pumps

Definitions

  • the invention relates to an actuating head a suction-pressure pump for ejecting a product from a container, the actuating head one too has an outlet channel leading an ejection opening, in which a valve closure piece is arranged, which together forms a check valve with the outlet duct, that when the actuating head is actuated by the product pressure is opened against spring force and the passage of the product into one from the inside of the outlet duct and limited the circumference of the valve plug Free space that has at least one transverse groove is connected to the ejection opening, the Valve closure piece made of a rubber-elastic material consists of the product pressure when actuated of the actuating head under elastic deformation the check valve opens and that with its end face the or each transverse groove is limited and with its Back on a radially inward protrusion Shoulder of the exhaust duct.
  • An actuator head of this type is from the DE 694 09 380 T2 known.
  • the valve closure piece by actuating the actuating head the fluid pressure axially compressed and thereby by the radially inwardly projecting shoulder of the outlet duct lifted.
  • Lifting off the valve plug from the radially inwardly projecting shoulder a correspondingly high actuation pressure and a correspondingly high actuation force.
  • the actuating head when using the Pump operated several times to get one accordingly build up high pressure. This is tedious. Possibly is also a correspondingly high actuation force to exercise the user.
  • DE 26 44 321 A shows an actuating head in which between the ejection port and the valve plug a fitting is arranged, which to the ejection opening leading transverse grooves.
  • the valve closure piece On the adapter the valve closure piece is supported by a Return spring.
  • the valve plug is cup-shaped and made of hard material. It will be at Actuation of the head under the product pressure from a Closed position in the exhaust duct, in the inside of the outlet channel lies tight against the force the return spring moved to the open position. there it slides axially along the inside of the Exhaust duct formed ribs. These limit grooves, through which the product flows to the transverse grooves can.
  • the return spring protrudes into the interior of the cup-shaped valve closure piece.
  • the space between the ejection opening and the one in the closed position Valve plug therefore has a proportionate large volume. Remain in this room a correspondingly large amount of product when the head is actuated. In addition, the return movement of the Valve closure piece in the closed position, air out the environment sucked into the room. The one remaining in the room The amount of product can therefore be contaminated. This can lead to significant health damage if the product is a food or is a drug, e.g. a drug that on the skin, e.g. applied to a patient's wound or sprayed into a patient's throat should.
  • a drug e.g. a drug that on the skin, e.g. applied to a patient's wound or sprayed into a patient's throat should.
  • the invention has for its object an actuating head of the type mentioned at the beginning, in which the actuation pressure required to open the check valve is less.
  • this object is achieved in that the back of the valve plug with at least is provided with a radial groove on the back part of the outlet duct of the valve closure piece can be connected to the room via the groove (s), and that the valve closure piece has a circumferential sealing lip having the flow of the product under the product pressure when actuating the actuating head releases.
  • valve closure piece with its back on the radially inward protruding shoulder of the outlet duct elastic is applied. This eliminates the need to move the valve closure piece and a displacement required for this.
  • the space between the valve closure piece can be correspondingly smaller and ejection opening.
  • the valve closure piece is preferably solid. This also eliminates a cavity in the valve closure piece.
  • the sealing lip preferably surrounds the valve closure piece approximately in its axial center. This will make the Space between the sealing lip and the ejection opening further decreased. The in which is accordingly low Space remaining product residue with the outside air in could come into contact.
  • the suction-pressure pump 1 shown is on the edge the opening of a container 2 via one in between arranged sealing ring disc 3 tightly attached.
  • the Suction-pressure pump 1 has a hollow cylindrical housing 4, its lower end through a check valve with a Valve closure ball 5 is lockable.
  • the valve lock ball 5 sits in its shown in Fig. 1 lower layer on a valve seat 6 tightly.
  • Housing 4 is a hollow cylindrical piston 7 against which Inside of the housing 4 sealing, axially displaceable.
  • the bore 8 of the piston 7 sits in one on the piston 7 molded hollow piston rod 9 continued.
  • the piston rod 9 is in an opening 10 of an upper closure hood 11 sealed by housing 4 and container 2 displaceable.
  • Piston rod 9 On the free end of the protruding from the housing 4 Piston rod 9 is an actuating head 12 of the suction-pressure pump 1 tight and tight.
  • the actuating head 12 passes through an outlet channel 13, which is on the hole 8 connects.
  • the outlet channel 13 settles through a relatively far over the outside of the container protruding pipe 14 away.
  • an approximately pot-shaped insert 15 tight attached in the free end of the Tube 14 in the free end of the Tube 14 is an approximately pot-shaped insert 15 tight attached.
  • the insert 15 has an ejection opening in its bottom 16, which acts as a nozzle. On the inside the insert bottom opens into a swirl chamber 17 the outlet opening 16.
  • the swirl chamber 17 protrudes at least one in the bottom of the insert 15 on the insert Traverse groove 18 formed on the inside with an annular space 19 in connection, the one hand from the inside of the Outlet channel 13 in the tube 14 and on the other hand by one with the inside of the outlet channel 13 in the tube 14 as Check valve cooperating, solid valve closure piece 20 is limited.
  • the valve plug 20 is made of rubber-elastic material, here one Elastomer, and has a cylindrical body that is about surrounded in its axial center by a sealing lip 21 is.
  • the sealing lip 21 is under one by its own elasticity caused spring force on the inside the outlet channel 13 in the annular space 19 close.
  • the face of the valve closure piece 20 covers the transverse groove (s) 18 except for a small opening at the radial outer end (s).
  • the back of the valve plug 20 lies with radial ribs, the radial grooves 22 delimit between them, on a radially inward protruding shoulder 23 of the outlet duct 13 elastic on.
  • About the grooves 22 can on the back of the Valve closure piece 20 lying part of the outlet channel 13 are connected to the annular space 19. With appropriate Dimensioning of the groove cross section can also only a groove will be sufficient.
  • the piston 7 is in its unactuated position according to the 1, 3 and 5 with a revolving at its free end Sealing lip 24 close to the inside of the housing 4 on.
  • a piston 7 above sealing lip 24 surrounding collar 25 serves to guide the piston 7 during its movement, however, leaves a game between yourself and the inside of the housing 4 free.
  • the housing 4 has at the end a pressure chamber 30 delimited by the housing 4 Gradation 31, below which the inner diameter of the Housing 4 slightly larger than the outer diameter of the Sealing lip 24 of the piston 7 is.
  • a dip tube protruding close to the bottom of the container 2 34 attached.
  • the housing 4 is by lateral Slits 35 with the interior of the container 2 above of the maximum fill level.
  • the annular space 19 be dimensioned very small, so that after a product issue at most a very small product residue in the Space between the sealing lip 21 and the outlet opening 16 remains, the through the outlet opening 16 penetrating atmospheric oxygen and / or penetrating Bacteria or the like are contaminated and the next issue could be harmful to health.
  • the sealing lip 21 also ensures due to their inherently elastic fixed system on the inside the outlet duct 13 for a very secure seal, which is an invasion or "growth" of bacteria or germs through the sealing gap in the product behind the valve closure piece 20 safely prevented.
  • the long tube 14 also allows the outlet opening 16 to in close proximity to a desired one To bring the order point, e.g. to get a drug in the throat or skin of a sick patient to spray without leaving the product a long way through the air from the ejection opening 16 to the job must cover.
  • the product 38 is usually a Liquid to be sprayed. It can but also act as a pasty material.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)
  • Check Valves (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Manipulator (AREA)
  • Nozzles (AREA)
  • Closures For Containers (AREA)

Abstract

The operating head (12) of a suck-and-press pump for spraying a product (38) held in a container (2) comprises a valve closure element (20) which has a least one radial groove (22) and a circumferential sealing lip (21), which serve to free a passage for the product into the outlet opening (16) when the operating head is pressed down.

Description

Die Erfindung bezieht sich auf einen Betätigungskopf einer Saug-Druck-Pumpe zum Ausspritzen eines Produkts aus einem Behältnis, wobei der Betätigungskopf einen zu einer Ausspritzöffnung führenden Auslaßkanal aufweist, in dem ein Ventilverschlußstück angeordnet ist, das zusammen mit dem Auslaßkanal ein Rückschlagventil bildet, das bei Betätigung des Betätigungskopfes durch den Produktdruck gegen Federkraft geöffnet wird und den Durchtritt des Produkts in einen von der Innenseite des Auslaßkanals und dem Umfang des Ventilverschlußstücks begrenzten Raum freigibt, der über wenigstens eine Quernut mit der Ausspritzöffnung verbunden ist, wobei das Ventilverschlußstück aus einem gummielastischen Material besteht, das durch den Produktdruck bei der Betätigung des Betätigungskopfes unter elastischer Verformung das Rückschlagventil öffnet und das mit seiner Stirnfläche die oder jede Quernut begrenzt und mit seiner Rückseite an einer radial nach innen vorstehenden Schulter des Auslaßkanals anliegt. The invention relates to an actuating head a suction-pressure pump for ejecting a product from a container, the actuating head one too has an outlet channel leading an ejection opening, in which a valve closure piece is arranged, which together forms a check valve with the outlet duct, that when the actuating head is actuated by the product pressure is opened against spring force and the passage of the product into one from the inside of the outlet duct and limited the circumference of the valve plug Free space that has at least one transverse groove is connected to the ejection opening, the Valve closure piece made of a rubber-elastic material consists of the product pressure when actuated of the actuating head under elastic deformation the check valve opens and that with its end face the or each transverse groove is limited and with its Back on a radially inward protrusion Shoulder of the exhaust duct.

Ein Betätigungskopf dieser Art ist aus der DE 694 09 380 T2 bekannt. Dort wird das Ventilverschlußstück bei Betätigung des Betätigungskopfes durch den Fluiddruck axial zusammengedrückt und dadurch von der radial nach innen vorstehenden Schulter des Auslaßkanals abgehoben. Das Abheben des Ventilverschlußstücks von der radial nach innen vorstehenden Schulter erfordert einen entsprechend hohen Betätigungsdruck und eine entsprechend hohe Betätigungskraft. Dementsprechend muß der Betätigungskopf bei der erstmaligen Benutzung der Pumpe mehrmals betätigt werden, um einen entsprechend hohen Druck aufzubauen. Dies ist mühsam. Gegebenenfalls ist auch eine entsprechend hohe Betätigungskraft durch den Benutzer auszuüben.An actuator head of this type is from the DE 694 09 380 T2 known. There the valve closure piece by actuating the actuating head the fluid pressure axially compressed and thereby by the radially inwardly projecting shoulder of the outlet duct lifted. Lifting off the valve plug from the radially inwardly projecting shoulder a correspondingly high actuation pressure and a correspondingly high actuation force. Accordingly the actuating head when using the Pump operated several times to get one accordingly build up high pressure. This is tedious. Possibly is also a correspondingly high actuation force to exercise the user.

DE 26 44 321 A zeigt einen Betätigungskopf, bei dem zwischen der Ausspritzöffnung und dem Ventilverschlußstück ein Paßstück angeordnet ist, das die zur Ausspritzöffnung führenden Quernuten abdeckt. An dem Paßstück stützt sich das Ventilverschlußstück über eine Rückstellfeder ab. Das Ventilverschlußstück ist topfförmig und besteht aus hartem Material. Es wird bei Betätigung des Kopfes unter dem Produktdruck aus einer Schließstellung im Auslaßkanal, in der es an der Innenseite des Auslaßkanals dicht anliegt, gegen die Kraft der Rückstellfeder in die Offenstellung verschoben. Dabei gleitet es längs axialer, in der Innenseite des Auslaßkanals ausgebildeter Rippen. Diese begrenzen Nuten, durch die das Produkt zu den Quernuten strömen kann. Die Rückstellfeder ragt in den Innenraum des topfförmigen Ventilverschlußstücks. Der Raum zwischen der Ausspritzöffnung und dem die Schließstellung einnehmenden Ventilverschlußstück hat daher ein verhältnismäßig großes Volumen. In diesem Raum verbleibt nach der Betätigung des Kopfes eine entsprechend große Produktmenge. Darüber hinaus wird bei der Rückbewegung des Ventilverschlußstücks in die Schließstellung Luft aus der Umgebung in den Raum gesaugt. Die in dem Raum verbleibende Produktmenge kann daher kontaminiert werden. Dies kann zu erheblichen Gesundheitsschäden führen, wenn es sich bei dem Produkt um ein Nahrungsmittel oder ein Medikament handelt, z.B. ein Medikament, das auf der Haut, z.B. auf eine Wunde, eines Patienten aufgebracht oder in den Rachen eines Patienten gesprüht werden soll.DE 26 44 321 A shows an actuating head in which between the ejection port and the valve plug a fitting is arranged, which to the ejection opening leading transverse grooves. On the adapter the valve closure piece is supported by a Return spring. The valve plug is cup-shaped and made of hard material. It will be at Actuation of the head under the product pressure from a Closed position in the exhaust duct, in the inside of the outlet channel lies tight against the force the return spring moved to the open position. there it slides axially along the inside of the Exhaust duct formed ribs. These limit grooves, through which the product flows to the transverse grooves can. The return spring protrudes into the interior of the cup-shaped valve closure piece. The space between the ejection opening and the one in the closed position Valve plug therefore has a proportionate large volume. Remain in this room a correspondingly large amount of product when the head is actuated. In addition, the return movement of the Valve closure piece in the closed position, air out the environment sucked into the room. The one remaining in the room The amount of product can therefore be contaminated. This can lead to significant health damage if the product is a food or is a drug, e.g. a drug that on the skin, e.g. applied to a patient's wound or sprayed into a patient's throat should.

Der Erfindung liegt die Aufgabe zugrunde, einen Betätigungskopf der eingangs genannten Art anzugeben, bei dem der zum Öffnen des Rückschlagventils erforderliche Betätigungsdruck geringer ist.The invention has for its object an actuating head of the type mentioned at the beginning, in which the actuation pressure required to open the check valve is less.

Erfindungsgemäß ist diese Aufgabe dadurch gelöst, daß die Rückseite des Ventilverschlußstücks mit wenigstens einer radialen Nut versehen ist und der auf der Rückseite des Ventilverschlußstücks liegende Teil des Auslaßkanals über die Nut(en) mit dem Raum verbindbar ist, und daß das Ventilverschlußstück eine umlaufende Dichtlippe aufweist, die den Durchfluß des Produkts unter dem Produktdruck bei der Betätigung des Betätigungskopfes freigibt.According to the invention this object is achieved in that the back of the valve plug with at least is provided with a radial groove on the back part of the outlet duct of the valve closure piece can be connected to the room via the groove (s), and that the valve closure piece has a circumferential sealing lip having the flow of the product under the product pressure when actuating the actuating head releases.

Bei dieser Lösung braucht nur die Dichtlippe des Ventilverschlußstücks zum Öffnen des Ventils und nicht das gesamte Ventilverschlußstück verformt zu werden. Dies ist mit geringerem Druck möglich. With this solution, only the sealing lip of the valve closure piece needs to open the valve and not that entire valve plug to be deformed. This is possible with less pressure.

Im Vergleich zu dem Betätigungskopf nach der DE 26 44 321 A entfallen eine separate Rückstellfeder für das Ventilverschlußstück und ein Paßstück zwischen der Rückstellfeder und der Ausspritzöffnung zur Abdekkung der Quernut(en). Dadurch verringert sich nicht nur der Aufwand zur Herstellung des Betätigungskopfes. Vielmehr kann auch der Abstand zwischen dem Ventilverschlußstück und der Austrittsöffnung in der Schließstellung des Ventilverschlußstücks und damit das Volumen des Raums dazwischen verringert werden. Dementsprechend verbleibt nach der Betätigung des Betätigungskopfes eine geringere Produktmenge in dem Raum, die kontaminiert werden könnte, so daß auch die Gefahr einer Gesundheitsschädigung entsprechend geringer ist.Compared to the actuator head after the DE 26 44 321 A eliminates a separate return spring for the valve plug and a fitting between the return spring and the ejection opening for covering the transverse groove (s). This not only reduces the effort to manufacture the actuating head. Rather, the distance between the valve closure piece can also and the outlet opening in the closed position of the valve closure piece and thus the volume of the space in between. Accordingly remains after actuation of the actuation head a smaller amount of product in the room that could be contaminated, so that the risk of a Damage to health is correspondingly less.

Vorzugsweise ist dafür gesorgt, daß das Ventilverschlußstück mit seiner Rückseite an der radial nach innen vorstehenden Schulter des Auslaßkanals elastisch anliegt. Dadurch entfällt eine Verschiebung des Ventilverschlußstücks und ein hierfür erforderlicher Hubraum. Entsprechend geringer kann der Raum zwischen Ventilverschlußstück und Ausspritzöffnung ausgebildet sein.It is preferably ensured that the valve closure piece with its back on the radially inward protruding shoulder of the outlet duct elastic is applied. This eliminates the need to move the valve closure piece and a displacement required for this. The space between the valve closure piece can be correspondingly smaller and ejection opening.

Vorzugsweise ist das Ventilverschlußstück massiv ausgebildet. Dadurch entfällt auch ein Hohlraum im Ventilverschlußstück.The valve closure piece is preferably solid. This also eliminates a cavity in the valve closure piece.

Sodann kann der Austrittskanal durch eine seitlich über den Umfang des Behältnisses hinausragendes Rohr verlaufen, an dessen freiem Ende die Ausspritzöffnung als Düse ausgebildet ist. Dieses Rohr ermöglicht es, die Ausspritzöffnung, ungehindert durch das Behältnis, bis in die Nähe derjenigen Stelle heranzuführen, an der das Produkt auftreffen soll, z.B. bis in den Rachen eines Patienten, so daß die Gefahr einer Kontamination des Produkts auf dem Wege von der Ausspritzöffnung bis zur Auftragsstelle weitgehend vermieden ist.Then the outlet canal through a laterally pipe protruding from the circumference of the container, at its free end the ejection opening as a nozzle is trained. This tube allows the ejection opening, unhindered by the container, up to bring the proximity of the place where the Product should hit, e.g. down the throat of one Patient, so that the risk of contamination of the Product on the way from the ejection opening to the Order point is largely avoided.

Vorzugsweise umgibt die Dichtlippe das Ventilverschlußstück etwa in seiner axialen Mitte. Dadurch wird der Raum zwischen der Dichtlippe und der Ausspritzöffnung weiter verringert. Entsprechend gering ist der in dem Raum verbleibende Produktrest, der mit der Außenluft in Berührung kommen könnte.The sealing lip preferably surrounds the valve closure piece approximately in its axial center. This will make the Space between the sealing lip and the ejection opening further decreased. The in which is accordingly low Space remaining product residue with the outside air in Could come into contact.

Die Erfindung und ihre Weiterbildungen werden nachstehend anhand der beiliegenden Zeichnungen eines bevorzugten Ausführungsbeispiels näher beschrieben. Darin stellen dar:

Fig. 1
einen Axialschnitt durch eine Saug-Druck-Pumpe mit einem erfindungsgemäßen Betätigungskopf auf einem mit einem auszugebenden Produkt gefüllten Behältnis vor der erstmaligen Betätigung der Saug-Druck-Pumpe mittels des Betätigungskopfes,
Fig. 2
einen Axialschnitt durch die Saug-Druck-Pumpe und das Behältnis nach Fig. 1 während einer erstmaligen Betätigung der Saug-Druck-Pumpe mittels des Betätigungskopfes,
Fig. 3
einen Axialschnitt durch die Saug-Druck-Pumpe und das Behältnis nach Fig. 1 am Ende des ersten Saughubs der Saug-Druck-Pumpe,
Fig. 4
den gleichen Axialschnitt wie den nach Fig. 2 während einer erstmaligen Ausgabebetätigung und
Fig. 5
den gleichen Axialschnitt wie den in Fig. 3 dargestellten, jedoch am Ende einer Ausgabebetätigung.
The invention and its developments are described below with reference to the accompanying drawings of a preferred embodiment. In it represent:
Fig. 1
an axial section through a suction-pressure pump with an actuating head according to the invention on a container filled with a product to be dispensed before the first actuation of the suction-pressure pump by means of the actuating head,
Fig. 2
1 during an initial actuation of the suction-pressure pump by means of the actuating head,
Fig. 3
2 shows an axial section through the suction-pressure pump and the container according to FIG. 1 at the end of the first suction stroke of the suction-pressure pump,
Fig. 4
the same axial section as that of FIG. 2 during a first dispensing operation and
Fig. 5
the same axial section as that shown in Fig. 3, but at the end of a dispensing operation.

Die dargestellte Saug-Druck-Pumpe 1 ist auf dem Rand der Öffnung eines Behältnisses 2 über eine dazwischen angeordnete Dichtringscheibe 3 dicht befestigt. Die Saug-Druck-Pumpe 1 hat ein hohlzylindrisches Gehäuse 4, dessen unteres Ende durch ein Rückschlagventil mit einer Ventilverschlußkugel 5 absperrbar ist. Die Ventilverschlußkugel 5 sitzt in ihrer in Fig. 1 dargestellten unteren Lage auf einem Ventilsitz 6 dicht auf. In dem Gehäuse 4 ist ein hohlzylindrischer Kolben 7, gegen die Innenseite des Gehäuses 4 dichtend, axial verschiebbar. Die Bohrung 8 des Kolbens 7 setzt sich in einer am Kolben 7 angeformten hohlen Kolbenstange 9 fort. Die Kolbenstange 9 ist in einer Öffnung 10 einer oberen Verschlußhaube 11 von Gehäuse 4 und Behältnis 2 abgedichtet verschiebbar.The suction-pressure pump 1 shown is on the edge the opening of a container 2 via one in between arranged sealing ring disc 3 tightly attached. The Suction-pressure pump 1 has a hollow cylindrical housing 4, its lower end through a check valve with a Valve closure ball 5 is lockable. The valve lock ball 5 sits in its shown in Fig. 1 lower layer on a valve seat 6 tightly. By doing Housing 4 is a hollow cylindrical piston 7 against which Inside of the housing 4 sealing, axially displaceable. The bore 8 of the piston 7 sits in one on the piston 7 molded hollow piston rod 9 continued. The piston rod 9 is in an opening 10 of an upper closure hood 11 sealed by housing 4 and container 2 displaceable.

Auf dem freien Ende der aus dem Gehäuse 4 herausragenden Kolbenstange 9 ist ein Betätigungskopf 12 der Saug-Druck-Pumpe 1 dicht und fest aufgesetzt. Den Betätigungskopf 12 durchsetzt ein Auslaßkanal 13, der sich an die Bohrung 8 anschließt. Der Auslaßkanal 13 setzt sich durch ein relativ weit über die Außenseite des Behältnisses hinausragendes Rohr 14 fort. Im freien Ende des Rohres 14 ist ein etwa topfförmiger Einsatz 15 dicht befestigt. Der Einsatz 15 hat in seinem Boden eine Ausspritzöffnung 16, die als Düse wirkt. Auf der Innenseite des Einsatz-Bodens mündet eine Wirbelkammer 17 in die Austrittsöffnung 16. Die Wirbelkammer 17 steht über wenigstens eine im Boden des Einsatzes 15 auf dessen Innenseite ausgebildete Quernut 18 mit einem Ringraum 19 in Verbindung, der einerseits von der Innenseite des Auslaßkanals 13 im Rohr 14 und andererseits von einem mit der Innenseite des Auslaßkanals 13 im Rohr 14 als Rückschlagventil zusammenwirkenden, massiven Ventilverschlußstück 20 begrenzt ist. Das Ventilverschlußstück 20 besteht aus gummielastischem Material, hier einem Elastomer, und hat einen zylindrischen Körper, der etwa in seiner axialen Mitte von einer Dichtlippe 21 umgeben ist. Die Dichtlippe 21 liegt unter einer durch ihre Eigenelastizität bewirkten Federkraft an der Innenseite des Auslaßkanals 13 im Ringraum 19 dicht an. Die Stirnseite des Ventilverschlußstücks 20 deckt die Quernut(en) 18 bis auf eine kleine Öffnung an deren radial äußeren Ende(n) ab. Die Rückseite des Ventilverschlußstücks 20 liegt mit radialen Rippen, die radiale Nuten 22 zwischen sich begrenzen, an einer radial nach innen vorstehenden Schulter 23 des Auslaßkanals 13 elastisch an. Über die Nuten 22 kann der auf der Rückseite des Ventilverschlußstücks 20 liegende Teil des Auslaßkanals 13 mit dem Ringraum 19 verbunden werden. Bei entsprechender Bemessung des Nutenquerschnitts kann auch nur eine Nut ausreichend sein.On the free end of the protruding from the housing 4 Piston rod 9 is an actuating head 12 of the suction-pressure pump 1 tight and tight. The actuating head 12 passes through an outlet channel 13, which is on the hole 8 connects. The outlet channel 13 settles through a relatively far over the outside of the container protruding pipe 14 away. In the free end of the Tube 14 is an approximately pot-shaped insert 15 tight attached. The insert 15 has an ejection opening in its bottom 16, which acts as a nozzle. On the inside the insert bottom opens into a swirl chamber 17 the outlet opening 16. The swirl chamber 17 protrudes at least one in the bottom of the insert 15 on the insert Traverse groove 18 formed on the inside with an annular space 19 in connection, the one hand from the inside of the Outlet channel 13 in the tube 14 and on the other hand by one with the inside of the outlet channel 13 in the tube 14 as Check valve cooperating, solid valve closure piece 20 is limited. The valve plug 20 is made of rubber-elastic material, here one Elastomer, and has a cylindrical body that is about surrounded in its axial center by a sealing lip 21 is. The sealing lip 21 is under one by its own elasticity caused spring force on the inside the outlet channel 13 in the annular space 19 close. The face of the valve closure piece 20 covers the transverse groove (s) 18 except for a small opening at the radial outer end (s). The back of the valve plug 20 lies with radial ribs, the radial grooves 22 delimit between them, on a radially inward protruding shoulder 23 of the outlet duct 13 elastic on. About the grooves 22 can on the back of the Valve closure piece 20 lying part of the outlet channel 13 are connected to the annular space 19. With appropriate Dimensioning of the groove cross section can also only a groove will be sufficient.

Der Kolben 7 liegt in seiner unbetätigten Lage nach den Fig. 1, 3 und 5 mit einer an seinem freien Ende umlaufenden Dichtlippe 24 dicht an der Innenseite des Gehäuses 4 an. Ein den Kolben 7 oberhalb der Dichtlippe 24 umgebender Bund 25 dient der Führung des Kolbens 7 während seiner Bewegung, läßt jedoch ein Spiel zwischen sich und der Innenseite des Gehäuses 4 frei. Eine Rückstellfeder 26, die unterbrochen dargestellt ist, stützt sich einerseits im Kolben 7 am Boden eines Ringraums 27, der von der äußeren Wand des Kolbens 7 und einem Rohrstutzen 28 begrenzt ist, und andererseits an einer Schulter 29 im Gehäuse 4 ab. Das Gehäuse 4 hat am Ende eines durch das Gehäuse 4 begrenzten Druckraums 30 eine Abstufung 31, unterhalb der der Innendurchmesser des Gehäuses 4 etwas größer als der Außendurchmesser der Dichtlippe 24 des Kolbens 7 ist. In einem Anschlußstutzen 32 am freien unteren Ende des Gehäuses 4 ist ein bis nahe an den Boden des Behälters 2 ragendes Tauchrohr 34 befestigt. Oberhalb der oberen Endlage des Kolbens 7 gemäß Fig. 1 ist das Gehäuse 4 durch seitliche Schlitze 35 mit dem Innenraum des Behältnisses 2 oberhalb des maximalen Füllstands verbunden.The piston 7 is in its unactuated position according to the 1, 3 and 5 with a revolving at its free end Sealing lip 24 close to the inside of the housing 4 on. A piston 7 above sealing lip 24 surrounding collar 25 serves to guide the piston 7 during its movement, however, leaves a game between yourself and the inside of the housing 4 free. A return spring 26, which is shown interrupted, supports one hand in the piston 7 at the bottom of an annulus 27 by the outer wall of the piston 7 and one Pipe socket 28 is limited, and on the other hand at one Shoulder 29 in the housing 4. The housing 4 has at the end a pressure chamber 30 delimited by the housing 4 Gradation 31, below which the inner diameter of the Housing 4 slightly larger than the outer diameter of the Sealing lip 24 of the piston 7 is. In a connector 32 at the free lower end of the housing 4 is a dip tube protruding close to the bottom of the container 2 34 attached. Above the upper end position of the piston 7 according to FIG. 1, the housing 4 is by lateral Slits 35 with the interior of the container 2 above of the maximum fill level.

Bei der erstmaligen Betätigung des Betätigungskopfes 12 durch manuelle Ausübung eines Drucks auf seine mit einer Riffelung 36 versehene Oberseite bewegt sich der Kolben 7 gegen die Kraft der Rückstellfeder 26 in dem Raum 30 gemäß Fig. 2 in Richtung auf das Rückschlagventil 5, 6. Durch den dabei im Raum 30, in der Bohrung 8 und im Auslaßkanal 13 entstehenden Luftdruck wird einerseits das Rückschlagventil 5, 6 geschlossen gehalten und andererseits die Dichtlippe 21 des Ventilverschlußstücks 20 zu dessen Körper hin gedrückt, so daß die im Raum 30, in der Bohrung 8, im Auslaßkanal 13 und im Ringraum 19 enthaltene Luft über die Quernut(en) 18, die Wirbelkammer 17 und die Austrittsöffnung 16 austreten kann. Nach Wegnahme des manuellen Drucks drückt die Rückstellfeder 26 den Kolben 7 wieder in die obere Endlage zurück. Durch den dabei im Raum 30, in der Bohrung 8 und im Auslaßkanal 13 entstehenden Unterdruck wird die Ventilverschlußkugel 5 von ihrem Sitz 6 bis gegen über ihr im Gehäuse 4 ausgebildete Rippen 37 abgehoben und die Dichtlippe 21 des Ventilverschlußstücks 20 in die Schließlage gegen die Innenseite des Auslaßkanals 13 gedrückt. Gleichzeitig wird durch den Unterdruck aus dem Behälter 2 ein Teil des darin enthaltenen Produkts 38 über das Tauchrohr 34 und das sich wieder öffnende Rückschlagventil 5, 6 bis in den Raum 30 gesaugt, wie es in Fig. 3 dargestellt ist. Durch erneutes Niederdrücken des Kolbens 7 mittels des Betätigungskopfes 12 wird das Rückschlagventil 5, 6 wieder geschlossen und das Produkt aus dem Raum 30 über die Bohrung 8, den Auslaßkanal 13, das sich wieder öffnende Rückschlagventil 13, 20 und die Ausspritzöffnung 16 ausgestoßen, wie es in Fig. 4 dargestellt ist. Dabei kann der Kolben 7 mit seiner Dichtlippe 24 bis unter die Abstufung 31 gedrückt werden. Sobald die Dichtlippe 24 dabei die Abstufung 31 überquert hat, wird der Druck im Raum 30 an der Dichtlippe 24 und dem Bund 25 des Kolbens 7 vorbei durch die Schlitze 35 in den Raum des Behältnisses 2 oberhalb des Produkt-Füllstandes abgebaut, so daß kein weiteres Produkt 38 mehr ausgestoßen wird. Dadurch wird die bei jeder Betätigung ausgegebene Produktmenge genau dosiert.When the actuating head 12 is actuated for the first time by manually exerting pressure on his with one The corrugation 36 provided top moves Piston 7 against the force of the return spring 26 in the 2 in the direction of the check valve 5, 6. Through the thereby in space 30, in the bore 8 and air pressure arising in the outlet duct 13 is on the one hand the check valve 5, 6 kept closed and on the other hand the sealing lip 21 of the valve closure piece 20 pressed towards its body, so that the im Room 30, in the bore 8, in the outlet channel 13 and in Annular space 19 contains air via the transverse groove (s) 18, the swirl chamber 17 and the outlet opening 16 emerge can. After removing the manual pressure, presses Return spring 26 the piston 7 back to the upper end position back. By doing so in room 30, in the bore 8 and in the outlet duct 13 negative pressure the valve closure ball 5 from its seat 6 to against raised above her in the housing 4 ribs 37 and the sealing lip 21 of the valve closure piece 20 in the closed position against the inside of the outlet duct 13 pressed. At the same time it is characterized by the vacuum the container 2 a part of the product contained therein 38 via the dip tube 34 and the opening again Check valve 5, 6 sucked up into space 30, like it is shown in Fig. 3. By pressing again the piston 7 by means of the actuating head 12 the check valve 5, 6 is closed again and the product from the room 30 through the hole 8, the Outlet channel 13, the re-opening check valve 13, 20 and the ejection opening 16 ejected as it is shown in Fig. 4. The piston 7 pressed with its sealing lip 24 to below the gradation 31 become. As soon as the sealing lip 24 does the gradation 31 has crossed, the pressure in room 30 is on the sealing lip 24 and the collar 25 of the piston 7 over through the slots 35 into the space of the container 2 degraded above the product level so that none further product 38 is launched. This will the quantity of product dispensed with each actuation dosed.

Während der sich nach Wegnahme des manuellen Drucks auf den Betätigungskopf 12 anschließenden Rückbewegung des Kolbens 7 saugt der Kolben 7 erneut einen Teil des Produkts 38 aus dem Behältnis 2 in den Raum 30, wie es in Fig. 5 dargestellt ist. During the after manual pressure is removed the actuating head 12 subsequent return movement of the Piston 7 sucks part of the product again 38 from the container 2 in the room 30, as in Fig. 5 is shown.

Wenn der Kolben 7 aus der Lage nach Fig. 5 erneut in die Lage nach Fig. 4 niedergedrückt wird, wird sofort wieder eine genau dosierte Produktmenge ausgegeben. Das gleiche geschieht bei jeder weiteren Betätigung bis zur völligen Entleerung des Behältnisses 2.When the piston 7 from the position shown in FIG. 5 again in 4 is depressed immediately again a precisely dosed amount of product is dispensed. The the same happens with every further actuation until complete emptying of the container 2.

Bei jeder Betätigung der Saug-Druck-Pumpe 1 ändert das Ventilverschlußstück 20 seine axiale Lage in dem Auslaßkanal 13 praktisch nicht, sondern liegt immer an dem Vorsprung 23 und an den die Quernut(en) 18 begrenzenden Rippen im Boden des Einsatzes 15 an. Desgleichen ist aufgrund der Ausbildung des Ventilverschlußstücks 20 mit der Dichtlippe 21 aus gummielastischem Material keine separate Rückstellfeder für das Ventilverschlußstück 20 und kein separates Abdeckteil für die Quernut(en) 18 erforderlich. Daher kann der Ringraum 19 sehr klein bemessen sein, so daß nach einer Produktausgabe allenfalls ein sehr geringer Produktrest in dem Raum zwischen der Dichtlippe 21 und der Austrittsöffnung 16 verbleibt, der durch über die Austrittsöffnung 16 eindringenden Luftsauerstoff und/oder eindringende Bakterien oder dergleichen kontaminiert werden und bei der nächsten Ausgabe gesundheitsschädlich wirken könnte. Die Dichtlippe 21 sorgt darüber hinaus aufgrund ihrer eigenelastischen festen Anlage an der Innenseite des Auslaßkanals 13 für eine sehr sichere Abdichtung, die ein Eindringen oder "Durchwachsen" von Bakterien bzw. Keimen durch den Dichtspalt in das Produkt hinter dem Ventilverschlußstück 20 sicher verhindert.This changes every time the suction-pressure pump 1 is actuated Valve plug 20 in its axial position in the outlet channel 13 practically not, but is always due to that Projection 23 and at the 18 bounding the transverse groove (s) Ribs in the bottom of the insert 15. The same is true due to the formation of the valve closure piece 20 with the sealing lip 21 made of rubber-elastic material no separate return spring for the valve plug 20 and no separate cover for the transverse groove (s) 18 required. Therefore, the annular space 19 be dimensioned very small, so that after a product issue at most a very small product residue in the Space between the sealing lip 21 and the outlet opening 16 remains, the through the outlet opening 16 penetrating atmospheric oxygen and / or penetrating Bacteria or the like are contaminated and the next issue could be harmful to health. The sealing lip 21 also ensures due to their inherently elastic fixed system on the inside the outlet duct 13 for a very secure seal, which is an invasion or "growth" of bacteria or germs through the sealing gap in the product behind the valve closure piece 20 safely prevented.

Das lange Rohr 14 ermöglicht es ferner, die Austrittsöffnung 16 bis in unmittelbare Nähe an eine gewünschte Auftragsstelle heranzuführen, z.B. um ein Medikament in den Rachen oder auf die Haut eines erkrankten Patienten zu sprühen, ohne daß das Produkt einen längeren Weg durch die Luft von der Ausspritzöffnung 16 bis zur Auftragsstelle zurücklegen muß.The long tube 14 also allows the outlet opening 16 to in close proximity to a desired one To bring the order point, e.g. to get a drug in the throat or skin of a sick patient to spray without leaving the product a long way through the air from the ejection opening 16 to the job must cover.

Bei dem Produkt 38 handelt es sich in der Regel um eine Flüssigkeit, die versprüht werden soll. Es kann sich aber auch um ein pastenartiges Material handeln.The product 38 is usually a Liquid to be sprayed. It can but also act as a pasty material.

Claims (5)

Betätigungskopf (12) einer Saug-Druck-Pumpe (1) zum Ausspritzen eines Produkts (38) aus einem Behältnis (2), wobei der Betätigungskopf (12) einen zu einer Ausspritzöffnung (16) führenden Auslaßkanal (13) aufweist, in dem ein Ventilverschlußstück (20) angeordnet ist, das zusammen mit dem Auslaßkanal (13) ein Rückschlagventil bildet, das bei Betätigung des Betätigungskopfes (12) durch den Produktdruck gegen Federkraft geöffnet wird und den Durchtritt des Produkts (38) in einen von der Innenseite des Auslaßkanals (13) und dem Umfang des Ventilverschlußstücks (20) begrenzten Raum (19) freigibt, der über wenigstens eine Quernut (18) mit der Ausspritzöffnung (16) verbunden ist, wobei das Ventilverschlußstück (20) aus einem gummielastischen Material besteht, das durch den Produktdruck bei der Betätigung des Betätigungskopfes (12) unter elastischer Verformung das Rückschlagventil (13, 20) öffnet und das mit seiner Stirnfläche die oder jede Quernut (18) begrenzt und mit seiner Rückseite an einer radial nach innen vorstehenden Schulter (23) des Auslaßkanals (13) anliegt, dadurch gekennzeichnet, daß die Rückseite des Ventilverschlußstücks (20) mit wenigstens einer radialen Nut (22) versehen ist und der auf der Rückseite des Ventilverschlußstücks (20) liegende Teil des Auslaßkanals (13) über die Nut(en) (22) mit dem Raum (19) verbindbar ist, und daß das Ventilverschlußstück (20) eine umlaufende Dichtlippe (21) aufweist, die den Durchfluß des Produkts (38) unter dem Produktdruck bei der Betätigung des Betätigungskopfes (12) freigibt.Actuating head (12) of a suction-pressure pump (1) for ejecting a product (38) from a container (2), the actuating head (12) having an outlet channel (13) leading to an ejection opening (16), in which a Valve closure piece (20) is arranged, which forms a check valve together with the outlet channel (13), which is opened against actuation by the product pressure when the actuating head (12) is actuated and the passage of the product (38) into one of the inside of the outlet channel ( 13) and the circumference of the valve closure piece (20) delimits space (19) which is connected via at least one transverse groove (18) to the ejection opening (16), the valve closure piece (20) being made of a rubber-elastic material which is produced by the product pressure when the actuating head (12) is actuated under elastic deformation, the check valve (13, 20) opens and, with its end face, limits the or each transverse groove (18) and with its rear side abuts a radially inwardly projecting shoulder (23) of the outlet channel (13), characterized in that the rear side of the valve closure piece (20) is provided with at least one radial groove (22) and that on the rear side of the valve closure piece (20) lying part of the outlet channel (13) via the groove (s) (22) with the space (19) can be connected, and that the valve closure piece (20) has a circumferential sealing lip (21) which the flow of the product (38) under the Releases product pressure when actuating the actuating head (12). Betätigungskopf nach Anspruch 1, dadurch gekennzeichnet, daß das Ventilverschlußstück (20) mit seiner Rückseite an der radial nach innen vorstehenden Schulter (23) des Auslaßkanals (13) elastisch anliegt.Actuating head according to claim 1, characterized in that the valve closure piece (20) rests elastically with its rear side on the radially inwardly projecting shoulder (23) of the outlet channel (13). Betätigungskopf nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß das Ventilverschlußstück (20) massiv ist.Actuating head according to one of claims 1 or 2, characterized in that the valve closure piece (20) is solid. Betätigungskopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Austrittskanal (13) durch ein seitlich über den Umfang des Behältnisses (2) hinausragendes Rohr (14) verläuft, an dessen freiem Ende die Ausspritzöffnung (16) als Düse ausgebildet ist.Actuating head according to one of claims 1 to 3, characterized in that the outlet channel (13) extends through a tube (14) which projects laterally over the circumference of the container (2) and at the free end of which the ejection opening (16) is designed as a nozzle. Betätigungskopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Dichtlippe das Ventilverschlußstück etwa in seiner axialen Mitte umgibt.Actuating head according to one of claims 1 to 3, characterized in that the sealing lip surrounds the valve closure piece approximately in its axial center.
EP03000193A 2002-01-10 2003-01-07 A force and suction pump actuator for spraying of a product from a container Expired - Lifetime EP1327477B1 (en)

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DE10200595A DE10200595A1 (en) 2002-01-10 2002-01-10 Actuating head of a suction-pressure pump for ejecting a product from a container
DE10200595 2002-01-10

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EP (1) EP1327477B1 (en)
AT (1) ATE468920T1 (en)
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Also Published As

Publication number Publication date
US6776312B2 (en) 2004-08-17
EP1327477B1 (en) 2010-05-26
DE50312730D1 (en) 2010-07-08
ATE468920T1 (en) 2010-06-15
ES2343516T3 (en) 2010-08-03
DK1327477T3 (en) 2010-09-13
US20030155379A1 (en) 2003-08-21
DE10200595A1 (en) 2003-07-31

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