EP0165949B1 - Spray pump with container connector - Google Patents

Spray pump with container connector Download PDF

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Publication number
EP0165949B1
EP0165949B1 EP85900050A EP85900050A EP0165949B1 EP 0165949 B1 EP0165949 B1 EP 0165949B1 EP 85900050 A EP85900050 A EP 85900050A EP 85900050 A EP85900050 A EP 85900050A EP 0165949 B1 EP0165949 B1 EP 0165949B1
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EP
European Patent Office
Prior art keywords
piston
lip seal
pump
bore hole
housing
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
EP85900050A
Other languages
German (de)
French (fr)
Other versions
EP0165949A1 (en
Inventor
Karl-Heinz Schmidt
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.)
SCHOTTE Werner
Original Assignee
SCHOTTE Werner
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
Priority claimed from DE19838335862 external-priority patent/DE8335862U1/en
Priority claimed from DE19848431062 external-priority patent/DE8431062U1/en
Application filed by SCHOTTE Werner filed Critical SCHOTTE Werner
Publication of EP0165949A1 publication Critical patent/EP0165949A1/en
Application granted granted Critical
Publication of EP0165949B1 publication Critical patent/EP0165949B1/en
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
    • B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • 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
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • 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
    • 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

Definitions

  • the invention relates to an atomizer pump with a container connection in which, by actuating a pump piston which is displaceable in a housing bore, a ventilation to the container connection which is connected to the atmosphere is released or closed, wherein, furthermore, an oblique lip seal is provided on the pump piston in a ring shape, which is actuated before the piston is actuated sealingly abuts a smooth section of the housing bore and with its free end edge on an inner collar of the pump receptacle, and which, when the piston is moved in the pumping direction, releases a gap between the lip seal and the inner wall of the bore.
  • Such an atomizer pump is known, for example, from US Pat. No. 4,183,449.
  • the sliding upper part is locked on the relatively fixed lower part by means of the sealing lip which rests against an inner collar in the rest position. Additional locking means can be omitted here.
  • the invention has for its object to improve an atomizer pump in such a way that the lip seal also serves to lock the pump part on the housing body in such a way that a longer service life with regard to the sealing lip can be achieved.
  • a first solution to this problem is that, starting from the sealing section to form an annular gap in the ventilation position, the housing bore is expanded conically in sections, the section farther from the sealing point merging into a cylindrical section of the housing bore, in the area between the lip seal and an annular gap is formed in the bore wall, and the conical section adjoining the conical section delimiting the closed position has a larger opening angle.
  • a second solution to this problem is seen in that in order to form an at least partial annular gap in the housing bore, parallel webs are arranged at a distance from one another in the longitudinal direction and onto which the lip seal can be pushed for ventilation.
  • the inventive design ensures that with one and the same element, namely the oblique sealing lip, the locking and ventilation takes place, whereby a long life of the sealing lip is ensured.
  • the lip seal provided on the pump piston only slides on smooth wall surfaces. Due to its inherent tension, the lip seal lies sealingly against the wall of the corresponding housing bore section in the closed position. If the pump piston is moved, the corresponding lip seal reaches an area due to the conical design of the housing bore, in which an open annular gap is created between the seal and the bore wall. This creates an open connection between the two end faces of the housing bore.
  • the bore is open to the atmosphere from the pressure side. A breakthrough to the container is provided on the connection side.
  • the entire plastic housing of the swirl atomizer pump shown bears the number 1. With an externally molded flange 18, this housing can be attached to a container, not shown, via the cap-like container connection 3. The lower nozzle 11 on the housing 1 protrudes into the container.
  • a first check valve generally designated by the number 2, which consists of a ball 21, the valve 22 and the spring 7 acting against the ball. This spring is supported on the pump piston 5.
  • the pump piston 5 projects into the actual pump cylinder 15 with a lip seal 53 formed in the shape of a ring, which is connected on one side to the nozzle 11 via the valve 2.
  • This pump piston 5 is hollow.
  • a second check valve 4 is provided on the inside, which in turn consists of a ball 41 and the valve seat 55 and the compression spring 8.
  • the pressure piece 9 with the Guide 91 put on.
  • This hollow piston shaft 51 is connected to a channel 13 on the pressure piece 9.
  • the channel leads to a swirl chamber 12, in the opening of which the atomizer nozzle 14 is inserted.
  • the narrowing pump becomes Penzylinder 15 liquid through the open check valve 4 through the hollow piston 5 to the channel 13, from there to the swirl chamber 12 and sprayed through the atomizer nozzle 14 to the outside.
  • Ventilation takes place in this position via the housing bore 16 connected to the atmosphere and through the opening 10 in the region of the flange 18.
  • a lip seal 54 which is formed on the outside of the piston skirt 51 in the form of a ring, pushes itself from the position according to FIG. 2 into the sealing position according to FIG. 1. It can be seen that this housing bore 16 widens conically towards the connection side. In the closed position, the lip seal 54 lies sealingly against the wall of the housing bore section 16a. The housing bore 16 is thereby closed relative to the front opening 19.
  • the lip seal 54 When the piston moves in the direction of the container connection, the lip seal 54 first reaches the stepped conical area 16b of the housing bore 16 and then the area of the cylindrical section 16c in which an annular gap is released between the lip seal 54 and the bore wall, which enables ventilation.
  • the conical housing bore section 16a delimiting the closed position has a smaller opening angle of the cone than the adjoining housing section 16b.
  • the entire plastic housing of the swirl atomizer pump shown in FIG. 3 bears the number 1 '.
  • a nozzle 11 ' is formed, in which the connector 4' is inserted.
  • a cap 3' is placed, with which the housing can be screwed onto a container (not shown).
  • a tubular connector 15 ' protrudes through the tubular connecting piece 4' and the riser pipe 24 'forms the extension downwards.
  • This riser pipe is held in a nozzle 23 ', which in turn is fastened in the duct nozzle 15'.
  • the upper end of this nozzle 23 ' forms the valve seat 22', which forms a check valve 2 'with a ball 21'.
  • the receptacle 16' for the piston pump is provided transversely to the connecting channel 13 '.
  • the open pump cylinder 6' in which the pump piston 5 'is displaceable from the outside, is formed concentrically to the channel 13'.
  • the pump piston 5 ' is automatically pressed into its outer position via the compression spring 7' which is supported in the housing.
  • the pump piston 5 ' is extended to the outside with a shaft 51', on which a lever handle 52 'sits, which is guided parallel to the axis of the piston.
  • the pump receptacle 16 'or the bore 17' provided therein is open to the lever handle 52 'side, i. H. associated with the atmosphere. It is at its other end in open connection with the container connector 4 '.
  • a lip seal 53 ' is formed in a ring shape on the outer end of the piston 5', which, because of its inherent tension, lies sealingly against a smooth sealing section 19 'of the bore 17'. This ring-like lip seal also forms a stop for the piston movement, since in the outer end position it abuts an inner collar 20 'on the pump receptacle 16'.

Landscapes

  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)

Abstract

In a spray pump with container connector, the actuation of a pump piston (5') displaceable in a case bore (17'), on the rod (51') of which there is provided a crown-shaped lip seal (53'), enables the release or closure of a venting to the atmosphere for the container connector (24'). Before actuating the piston (5'), said lip seal (53') is arranged tight against a flat segment (19') of the casing bore (17'). The displacement of the piston (5') in the pumping direction causes the opening of a slot between the lip seal (53') and the inner wall of the bore.

Description

Die Erfindung betrifft eine Zerstäuberpumpe mit Behälteranschluß bei der durch Betätigung eines in einer Gehäusebohrung verschiebbaren Pumpenkolbens jeweils eine mit der Atmosphäre in Verbindung stehende Belüftung zum Behälteranschluß freigegeben bzw. verschlossen wird, wobei ferner am Pumpenkolben kranzförmig eine schräggerichtete Lippendichtung vorgesehen ist, die vor Betätigung des Kolbens dichtend an einem glatten Abschnitt der Gehäusebohrung und mit ihrer freien Endkante an einem Innenbund der Pumpenaufnahme anliegt, und die beim Verschieben des Kolbens in Pumprichtung einen Spalt zwischen Lippendichtung und Bohrungsinnenwand freigibt.The invention relates to an atomizer pump with a container connection in which, by actuating a pump piston which is displaceable in a housing bore, a ventilation to the container connection which is connected to the atmosphere is released or closed, wherein, furthermore, an oblique lip seal is provided on the pump piston in a ring shape, which is actuated before the piston is actuated sealingly abuts a smooth section of the housing bore and with its free end edge on an inner collar of the pump receptacle, and which, when the piston is moved in the pumping direction, releases a gap between the lip seal and the inner wall of the bore.

Eine derartige Zerstäuberpumpe ist beispielsweise aus der US-PS 4 183 449 bekannt.Such an atomizer pump is known, for example, from US Pat. No. 4,183,449.

Dabei erfolgt die Verriegelung des verschiebbaren Oberteils an dem relativ gestellfesten Unterteil mittels der Dichtlippe, die in der Ruhelage an einem Innenbund anliegt. Zusätzliche Verriegelungsmittel können hier entfallen.The sliding upper part is locked on the relatively fixed lower part by means of the sealing lip which rests against an inner collar in the rest position. Additional locking means can be omitted here.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Zerstäuberpumpe derart, bei welcher die Lippendichtung gleichzeitig zur Verriegelung des Pumpenteiles am Gehäusekörper dient, dahingehend zu verbessern, daß eine höhere Lebensdauer hinsichtlich der Dichtlippe erreichbar ist.Based on this prior art, the invention has for its object to improve an atomizer pump in such a way that the lip seal also serves to lock the pump part on the housing body in such a way that a longer service life with regard to the sealing lip can be achieved.

Eine erste Lösung dieser Aufgabe besteht darin, daß die Gehäusebohrung ausgehend von dem dichtenden Abschnitt zur Bildung eines Ringspaltes in der Belüftungsstellung durch konische Abschnitte absatzweise konisch erweitert ist, wobei der der Dichtstelle fernere Abschnitt in einen zylindrischen Abschnitt der Gehäusebohrung übergeht, in welchem Bereich zwischen Lippendichtung und Bohrungswandung ein Ringspalt gebildet ist, und der an den die Verschlußstellung begrenzenden konischen Abschnitt anschließende konische Abschnitt einen größeren Öffnungswinkel aufweist.A first solution to this problem is that, starting from the sealing section to form an annular gap in the ventilation position, the housing bore is expanded conically in sections, the section farther from the sealing point merging into a cylindrical section of the housing bore, in the area between the lip seal and an annular gap is formed in the bore wall, and the conical section adjoining the conical section delimiting the closed position has a larger opening angle.

Eine zweite Lösung dieser Aufgabe wird darin gesehen, daß zur Bildung eines mindestens teilweisen Ringspaltes in der Gehäusebohrung in Längsrichtung parallel verlaufende Stege mit Abstand voneinander angeordnet sind, auf die die Lippendichtung zwecks Belüftung aufschiebbar ist.A second solution to this problem is seen in that in order to form an at least partial annular gap in the housing bore, parallel webs are arranged at a distance from one another in the longitudinal direction and onto which the lip seal can be pushed for ventilation.

Durch die erfindungsgemäße Ausbildung wird erreicht, daß mit ein und demselben Element, nämlich der schräggerichteten Dichtlippe, die Verriegelung und die Belüftung erfolgt, wobei dennoch eine hohe Lebensdauer der Dichtlippe sichergestellt ist.The inventive design ensures that with one and the same element, namely the oblique sealing lip, the locking and ventilation takes place, whereby a long life of the sealing lip is ensured.

Bei der erstgenannten Lösung gemäß vorliegender Erfindung gleitet die am Pumpenkolben vorgesehene Lippendichtung lediglich auf glatten Wandflächen. Aufgrund ihrer Eigenspannung liegt die Lippendichtung in der Verschlußstellung dichtend an der Wand des entsprechenden Gehäusebohrungsabschnittes an. Wird der Pumpenkolben verschoben, so gelangt die entsprechende Lippendichtung aufgrund der konischen Ausbildung der Gehäusebohrung in einen Bereich, an dem ein offener Ringspalt zwischen Dichtung und Bohrungswand entsteht. Damit ist eine offene Verbindung zwischen den beiden Stirnseiten der Gehäusebohrung hergestellt. Die Bohrung ist von der Druckseite her zur Atmosphäre geöffnet. Zur Anschlußseite hin ist ein Durchbruch zum Behälter vorgesehen.In the first-mentioned solution according to the present invention, the lip seal provided on the pump piston only slides on smooth wall surfaces. Due to its inherent tension, the lip seal lies sealingly against the wall of the corresponding housing bore section in the closed position. If the pump piston is moved, the corresponding lip seal reaches an area due to the conical design of the housing bore, in which an open annular gap is created between the seal and the bore wall. This creates an open connection between the two end faces of the housing bore. The bore is open to the atmosphere from the pressure side. A breakthrough to the container is provided on the connection side.

Bezüglich der zweitgenannten Lösung wird einerseits eine zugfeste Halterung des Pumpenkolbens in seiner Gehäusebohrung erreicht, wobei andererseits die schräggerichtete, kranzförmige Lippendichtung bei der unter Druck erfolgenden Rückbewegung des Kolbens an den inneren Ringbund der Gehäusebohrung anstößt, so daß der Kolben nicht aus der Bohrung herausgezogen werden kann.With regard to the second-mentioned solution, on the one hand a tension-proof mounting of the pump piston in its housing bore is achieved, on the other hand the oblique, ring-shaped lip seal abuts the inner ring collar of the housing bore during the return movement of the piston under pressure, so that the piston cannot be pulled out of the bore .

Anhand von drei Ausführungsbeispielen wird die Erfindung im folgenden näher erläutert.The invention is explained in more detail below with the aid of three exemplary embodiments.

Es zeigt:

  • Fig. 1 einen Längsschnitt durch eine Zerstäuberpumpe in der Verschlußstellung des Pumpenkolbens;
  • Fig. 2 eine Figur 1 entsprechende Darstellung in der Betätigungsstellung des Pumpenkolbens und
  • Fig. 3 einen Längsschnitt durch eine andere Ausführungsart einer Zerstäuberpumpe in der Verschlußstellung des Pumpenkolbens.
It shows:
  • 1 shows a longitudinal section through an atomizer pump in the closed position of the pump piston.
  • Fig. 2 is a representation corresponding to Figure 1 in the operating position of the pump piston and
  • Fig. 3 shows a longitudinal section through another embodiment of an atomizer pump in the closed position of the pump piston.

Zunächst wird auf die Figuren 1 und 2 Bezug genommen.First, reference is made to FIGS. 1 and 2.

Das gesamte Kunststoffgehäuse der abgebildeten Drallzerstäuberpumpe trägt die Ziffer 1. Mit einem außen angeformten Flansch 18 kann dieses Gehäuse über den kappenartigen Behälteranschluß 3 an einem nicht dargestellten Behälter befestigt werden. Der untere Stutzen 11 am Gehäuse 1 ragt dabei in den Behälter hinein.The entire plastic housing of the swirl atomizer pump shown bears the number 1. With an externally molded flange 18, this housing can be attached to a container, not shown, via the cap-like container connection 3. The lower nozzle 11 on the housing 1 protrudes into the container.

Hinter einem Zuführungskanal ist ein erstes insgesamt mt der Ziffer 2 bezeichnetes Rückschlagventil vorgesehen, welches aus einer Kugel 21, dem Ventil 22 und der gegen die Kugel wirkenden Feder 7 besteht. Diese Feder stützt sich am Pumpenkolben 5 ab.Behind a feed channel there is a first check valve, generally designated by the number 2, which consists of a ball 21, the valve 22 and the spring 7 acting against the ball. This spring is supported on the pump piston 5.

Der Pumpenkolben 5 ragt mit einer kranzförmig angeformten Lippendichtung 53 in den eigentlichen Pumpenzylinder 15 hinein, der zur einen Seite über das Ventil 2 mit dem Stutzen 11 in Verbindung steht. Dieser Pumpenkolben 5 ist hohl ausgebildet. An seinem zum Pumpenzylinder 15 gerichteten Ende ist innen ein zweites Rückschlagventil 4 vorgesehen, welches wiederum aus einer Kugel 41 und dem Ventilsitz 55 besteht sowie der Druckfeder 8. Auf dem durch die Stirnöffnung 19 des Gehäuses 1 ragenden Kolbenschaftes 51 ist außen das Druckstück 9 mit der Führung 91 aufgesetzt.The pump piston 5 projects into the actual pump cylinder 15 with a lip seal 53 formed in the shape of a ring, which is connected on one side to the nozzle 11 via the valve 2. This pump piston 5 is hollow. At its end facing the pump cylinder 15, a second check valve 4 is provided on the inside, which in turn consists of a ball 41 and the valve seat 55 and the compression spring 8. On the piston shaft 51 projecting through the front opening 19 of the housing 1, the pressure piece 9 with the Guide 91 put on.

Dieser hohle Kolbenschaft 51 steht in Verbindung mit einem Kanal 13 am Druckstück 9. Der Kanal führt zu einer Drallkammer 12, in deren Öffnung nach außen die Zerstäuberdüse 14 eingesetzt ist.This hollow piston shaft 51 is connected to a channel 13 on the pressure piece 9. The channel leads to a swirl chamber 12, in the opening of which the atomizer nozzle 14 is inserted.

Wird über das Druckstück 9 der Pumpenkolben nach unten in Richtung Behälteranschluß gedrückt, so wird aus dem sich verengenden Pumpenzylinder 15 Flüssigkeit über das geöffnete Rückschlagventil 4 durch den hohlen Kolben 5 zum Kanal 13, von dort zur Drallkammer 12 geführt und durch die Zerstäuberdüse 14 nach außen gesprüht.If the pump piston is pressed down towards the container connection via the pressure piece 9, the narrowing pump becomes Penzylinder 15 liquid through the open check valve 4 through the hollow piston 5 to the channel 13, from there to the swirl chamber 12 and sprayed through the atomizer nozzle 14 to the outside.

Um für den nächsten Ansaugvorgang das im Behälter entstehende Vakuum auszugleichen, erfolgt in dieser Stellung die Belüftung über die mit der Atmosphäre in Verbindung stehende Gehäusebohrung 16 und durch den Durchbruch 10 im Bereich des Flansches 18.In order to compensate for the vacuum created in the container for the next suction process, ventilation takes place in this position via the housing bore 16 connected to the atmosphere and through the opening 10 in the region of the flange 18.

Über die Druckfeder 7 wird bei Entlastung des Druckstückes 9 das Druckstück angehoben. Dabei gleitet der Pumpenkolben 5 zurück. Eine außen am Kolbenschaft 51 kranzförmig angeformte Lippendichtung 54 schiebt sich dabei aus der Stellung nach Figur 2 in die Abdichtstellung nach Figur 1. Erkennbar ist, daß diese Gehäusebohrung 16 sich absatzweise zur Anschlußseite hin konisch erweitert. In der Verschlußstellung liegt die Lippendichtung 54 dichtend an der Wand des Gehäusebohrungsabschnittes 16a an. Die Gehäusebohrung 16 ist dadurch gegenüber der Stirnöffnung 19 verschlosssen. Bei Bewegung des Kolbens in Richtung des Behälteranschlusses gelangt die Lippendichtung 54 zunächst in den abgesetzten konischen Bereich 16b der Gehäusebohrung 16 und danach in den Bereich des zylindrischen Abschnittes 16c, in dem zwischen Lippendichtung 54 und Bohrungswand ein Ringspalt freigegeben wird, der die Belüftung ermöglicht. Der die Verschlußstellung begrenzende konische Gehäusebohrungsabschnitt 16a weist einen geringeren Öffnungswinkel des Konus auf als der daran anschließende Gehäuseabschnitt 16b.Via the compression spring 7, the pressure piece is raised when the pressure piece 9 is relieved. The pump piston 5 slides back. A lip seal 54, which is formed on the outside of the piston skirt 51 in the form of a ring, pushes itself from the position according to FIG. 2 into the sealing position according to FIG. 1. It can be seen that this housing bore 16 widens conically towards the connection side. In the closed position, the lip seal 54 lies sealingly against the wall of the housing bore section 16a. The housing bore 16 is thereby closed relative to the front opening 19. When the piston moves in the direction of the container connection, the lip seal 54 first reaches the stepped conical area 16b of the housing bore 16 and then the area of the cylindrical section 16c in which an annular gap is released between the lip seal 54 and the bore wall, which enables ventilation. The conical housing bore section 16a delimiting the closed position has a smaller opening angle of the cone than the adjoining housing section 16b.

Das gesamte Kunststoffgehäuse der in Figur 3 abgebildeten Drallzerstäuberpumpe trägt die Ziffer 1'. An seinem unteren Bereich ist ein Stutzen 11' angeformt, in den das Anschlußstück 4' eingesetzt ist. An dem nach außen ragenden Flansch 41' dieses Anschlußstückes ist eine Überwurfkappe 3' aufgesetzt, mit der das Gehäuse auf einen Behälter (nicht dargestellt) aufschraubbar ist. Durch das rohrförmige Anschlußstück 4' ragt ein im Gehäuse eingeformter Kanalstutzen 15', in dem nach unten das Steigrohr 24' die Verlängerung bildet.The entire plastic housing of the swirl atomizer pump shown in FIG. 3 bears the number 1 '. At its lower area a nozzle 11 'is formed, in which the connector 4' is inserted. On the outwardly projecting flange 41 'of this connector, a cap 3' is placed, with which the housing can be screwed onto a container (not shown). A tubular connector 15 'protrudes through the tubular connecting piece 4' and the riser pipe 24 'forms the extension downwards.

Dieses Steigrohr ist dabei in einem Stutzen 23' gehalten, der wiederum im Kanalstutzen 15' befestigt ist. Das obere Ende dieses Stutzens 23' bildet den Ventilsitz 22', der mit einer Kugel 21' ein Rückschlagventil 2' bildet. Oberhalb dieses Rückschlagventiles 2' ist quergerichtet zum Verbindungskanal 13' die Aufnahme 16' für die Kolbenpumpe vorgesehen.This riser pipe is held in a nozzle 23 ', which in turn is fastened in the duct nozzle 15'. The upper end of this nozzle 23 'forms the valve seat 22', which forms a check valve 2 'with a ball 21'. Above this check valve 2 ', the receptacle 16' for the piston pump is provided transversely to the connecting channel 13 '.

In dieser Aufnahme 16' ist zum Kanal 13'gerichtet der offene Pumpenzylinder 6' konzentrisch eingeformt, in dem der Pumpenkolben 5' von außen verschiebbar ist. Über die sich im Gehäuse abstützende Druckfeder 7' wird der Pumpenkolben 5' jeweils in seine äußere Position automatisch gedrückt. Der Pumpenkolben 5' ist mit einem Schaft 51' nach außen verlängert, an dem ein Hebelgriff 52' sitzt, der parallel zur Achse des Kolbens geführt ist.In this receptacle 16 ', the open pump cylinder 6', in which the pump piston 5 'is displaceable from the outside, is formed concentrically to the channel 13'. The pump piston 5 'is automatically pressed into its outer position via the compression spring 7' which is supported in the housing. The pump piston 5 'is extended to the outside with a shaft 51', on which a lever handle 52 'sits, which is guided parallel to the axis of the piston.

Die Pumpenaufnahme 16' bzw. die darin vorgesehene Bohrung 17' ist zur Seite des Hebelgriffes 52' hin offen, d. h. mit der Atmosphäre verbunden. Sie steht mit ihrem anderen Ende in offener Verbindung mit dem Behälteranschlußstück 4'. Um diese Belüftungsverbindung während der Nichtbetätigung der Pumpe abzudichten, ist am äußeren Ende des Kolbens 5' kranzförmig eine Lippendichtung 53' angeformt, die aufgrund ihrer Eigenspannung dichtend an einem glatten Dichtungsabschnitt 19' der Bohrung 17' anliegt. Diese kranzartige Lippendichtung bildet gleichzeitig einen Anschlag für die Kolbenbewegung, da sie in der äußeren Endstellung gegen einen Innenbund 20' an der Pumpenaufnahme 16' anstößt.The pump receptacle 16 'or the bore 17' provided therein is open to the lever handle 52 'side, i. H. associated with the atmosphere. It is at its other end in open connection with the container connector 4 '. In order to seal this ventilation connection during the non-actuation of the pump, a lip seal 53 'is formed in a ring shape on the outer end of the piston 5', which, because of its inherent tension, lies sealingly against a smooth sealing section 19 'of the bore 17'. This ring-like lip seal also forms a stop for the piston movement, since in the outer end position it abuts an inner collar 20 'on the pump receptacle 16'.

Bei der Betätigung des Kolbens 5' über den Hebelgriff 52' in Druckrichtung schiebt sich die Lippendichtung 53' auf den Längsstegen 18' in der Bohrung 17' auf. Diese Längsstege sind parallel zueinander mit Abstand vorgesehen, so daß zwischen den Stegen eine Verbindung in der Art eines Teilringspaltes zum Anschlußstück 4' freigegeben wird, wodurch die Belüftung des Behälters erfolgt.When the piston 5 'is actuated via the lever handle 52' in the pressure direction, the lip seal 53 'slides onto the longitudinal webs 18' in the bore 17 '. These longitudinal webs are provided parallel to one another at a distance, so that a connection in the manner of a partial ring gap to the connecting piece 4 'is released between the webs, as a result of which the container is ventilated.

Bei der federbelasteten Rückbewegung des Kolbens 5' bildet sich im Zylinder 6' ein Unterdruck. Im Steigrohr 24' steigt unter dem von außen wirkenden Atmosphärendruck Flüssigkeit durch das Rückschlagventil 2' auf und füllt teilweise den Pumpenzylinder 6' sowie den Kanal 13'. Nach Verlassen der Stege 18' dichtet die Lippendichtung 53' die Bohrung 17' am Dichtungsabschnitt 19' wiederum ab, so daß auch bei Schräghaltung oder umgekehrter Haltung aus dem Behälter keine Flüssigkeit auslaufen kann.During the spring-loaded return movement of the piston 5 ', a vacuum is formed in the cylinder 6'. In the riser pipe 24 ', liquid rises through the check valve 2' under the atmospheric pressure acting from the outside and partially fills the pump cylinder 6 'and the channel 13'. After leaving the webs 18 ', the lip seal 53' seals off the bore 17 'on the sealing section 19', so that no liquid can leak out of the container even when held at an angle or in the opposite position.

Bei der nächsten Betätigung des Kolbens 5' in Druckrichtung wird die im Zylinder 6' und dem Kanal 13' aufgenommene Flüssigkeit zum Austritts- bzw. Zuführungskanal 12' gedrückt und von dort durch die vorgeschaltete Drallkammer und die Düse 14' nach außen zerstäubt. Das Rückschlagventil 2' ist dabei geschlossen.The next time the piston 5 'is actuated in the pressure direction, the liquid received in the cylinder 6' and the channel 13 'is pressed to the outlet or supply channel 12' and atomized from there through the upstream swirl chamber and the nozzle 14 'to the outside. The check valve 2 'is closed.

Claims (2)

1. An atomization pump with an adaptor for a tank that has an aeration between the atmosphere and the tank adaptor (15) that can be either opened or closed by actuation of the pump piston (5) which is slidable in a bore hole (16) in the housing, furthermore with a slanted lip seal (54) placed coronally around the pump piston (5), whereby before actuation of the piston this lip seal fits closely on a smooth section (16a) of the bore hole (16) in the housing and its free edge fits closely on the inside collar (17) of the pump receptor and when the piston (5) is moved in the pumping direction a gap is formed between the lip seal (54) and the inside wall of the bore hole, characterized in that, starting out form the sealing section (16a) the bore hole (16) of the housing is expended intermittently to form an annular gap in the aeration channel through the conical sections (16a, 16b), whereby the seal furthest away section (16b) leads to a cylinderical section (16c) of the bore hole (16) of the housing, in which area between the lip seal (54) and the wall of the bore hole an annular gap is formed, and that the conical section (16b) adjacent to the conical section (16a) bordering on the sealing area has a larger cone angle.
2. An atomization pump with an adaptor for a tank that has an aeration between the atmosphere and the tank adaptor (24') that can be either opened or closed by actuation of the pump piston (5') which is slidable in a bore hole (17') in the housing furthermore with a slanted lip seal (53') placed coronally around the pump piston (5'), whereby before actuation of the piston this lip seal (53') fits closely on a smooth section (19') of the bore hole (17') in the housing and its free edge fits closely on an inside collar (20') of the pump receptor and when the piston (5') is moved in the pumping direction a gap is formed between the lip seal (53') and the inside wall of the bore hole, characterized in that, fins (18') are arranged in longitudinal direction parallel to and in some distance from each other to form at least a partly annular gap in the bore hole (17') of the housing, on which fins (18') the lip seal (53') is slidable for aeration purposes.
EP85900050A 1983-12-14 1984-11-30 Spray pump with container connector Expired EP0165949B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19838335862 DE8335862U1 (en) 1983-12-14 1983-12-14 SPRAYER PUMP
DE8335862U 1983-12-14
DE19848431062 DE8431062U1 (en) 1984-10-23 1984-10-23 SPRAYER PUMP
DE8431062U 1984-10-23

Publications (2)

Publication Number Publication Date
EP0165949A1 EP0165949A1 (en) 1986-01-02
EP0165949B1 true EP0165949B1 (en) 1989-03-22

Family

ID=25949725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85900050A Expired EP0165949B1 (en) 1983-12-14 1984-11-30 Spray pump with container connector

Country Status (9)

Country Link
US (1) US4728009A (en)
EP (1) EP0165949B1 (en)
DE (1) DE3490544D2 (en)
DK (1) DK368185A (en)
ES (1) ES283391Y (en)
GB (1) GB2162594B (en)
IT (1) IT8424065A0 (en)
NL (1) NL8420310A (en)
WO (1) WO1985002563A1 (en)

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Also Published As

Publication number Publication date
WO1985002563A1 (en) 1985-06-20
DK368185D0 (en) 1985-08-13
IT8424065A0 (en) 1984-12-14
DE3490544D2 (en) 1985-11-28
EP0165949A1 (en) 1986-01-02
ES283391Y (en) 1986-09-01
GB8519231D0 (en) 1985-09-04
GB2162594A (en) 1986-02-05
ES283391U (en) 1986-02-01
US4728009A (en) 1988-03-01
GB2162594B (en) 1987-07-15
DK368185A (en) 1985-08-13
NL8420310A (en) 1985-11-01

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