EP3689472B1 - Düsenkopf für eine sprühpumpe sowie sprühpumpe mit dem düsenkopf - Google Patents

Düsenkopf für eine sprühpumpe sowie sprühpumpe mit dem düsenkopf Download PDF

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Publication number
EP3689472B1
EP3689472B1 EP20160358.6A EP20160358A EP3689472B1 EP 3689472 B1 EP3689472 B1 EP 3689472B1 EP 20160358 A EP20160358 A EP 20160358A EP 3689472 B1 EP3689472 B1 EP 3689472B1
Authority
EP
European Patent Office
Prior art keywords
pump
piston rod
spray
piston
cap
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.)
Active
Application number
EP20160358.6A
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German (de)
English (en)
French (fr)
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EP3689472A1 (de
Inventor
Sabine Göttke
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.)
RPC Bramlage GmbH
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RPC Bramlage GmbH
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Publication date
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Publication of EP3689472A1 publication Critical patent/EP3689472A1/de
Application granted granted Critical
Publication of EP3689472B1 publication Critical patent/EP3689472B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
    • 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
    • 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
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
    • 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
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers

Definitions

  • the invention relates to a nozzle head for a spray pump, preferably a finger-operated spray pump, with a pump head, a receiving pin in the pump head and a cap having a spray nozzle, which is held in place in the pump head in association with the receiving pin, the receiving pin extending in the plug-on direction of the cap extending longitudinal axis (y) and in the receiving pin a fluid path is formed in the direction of the longitudinal axis (y), which leads to a central chamber upstream of the spray nozzle, the central chamber further having inlet channels which extend in a plane perpendicular to the longitudinal axis (y) extend, which are partially formed by an inner surface of the cap and partially by an outer surface of the receiving pin, further the boundary surfaces of the inlet channels with the exception of a bottom surface are formed exclusively in the cap and the receiving pin has a closed flat face, the zugl eich is used to form the boundary surfaces of the inlet channels, the end face being surrounded by a circumferential surface that runs in a stepped
  • Nozzle heads of the type in question are known. It is, for example, on the WO 2012/110744 A1 referenced. Such nozzle heads are used to spray the medium when the spray pump is actuated, with the medium being swirled in the nozzle head in the area of the central chamber before it is dispensed.
  • a nozzle head is known in which the receiving pin is completely cylindrical with regard to its circumferential surface.
  • the receiving pin has a stepped circumferential surface. Branch channels are formed in the cap that run radially outwards.
  • the invention is concerned with the task of creating an advantageous nozzle head for a Specify spray pump as well as a spray pump equipped in this way.
  • a side wall of an inlet channel is formed by a rib formed in the cap and that the continuous rib viewed in the circumferential direction with reference to a longitudinal axis (y) the inner as well as the outer side wall of each inlet channel and above that form a radially outer connecting wall between the outer side wall and the inner side wall of each inlet channel.
  • the end face which is also used to form the boundary surfaces of the inlet channels, can form the bottom surface of each inlet channel when the cap is arranged.
  • the stepped circumferential surface forms, at least over part of its circumference, a circumferential feed channel for the feed channels, which feed channel is in connection with the fluid path formed in the direction of the longitudinal axis in the region of the receiving pin.
  • the supply channel running in the circumferential direction can only be formed with the arrangement of the cap on the receiving pin.
  • a bottom and a side surface can be formed by the receiving pin and the further side surface and the top surface can be formed by the cap.
  • the inlet channels have fluid axes with respect to the central chamber. These can run tangentially to a circle, the center of which is formed by the longitudinal axis of the receiving pin. This circle can have a maximum diameter which can correspond to the diameter of the preferably circular central chamber.
  • the circle in which the flow center axes of the inlet channels enter tangentially is selected to be smaller than a circle given by the circumferential wall of the central chamber.
  • the radius of the circle can be smaller than a largest dimension of the central chamber transversely to the longitudinal axis.
  • the diameter of the circle is equal to or smaller than a circle that is laid in the central chamber in the plan, which circle then at best touches the wall of the central chamber.
  • a side wall of an inlet channel is formed by a rib formed in the cap.
  • a rib protrudes axially beyond a ceiling surface formed by the cap for an inlet channel and is supported in the assignment position on the end face of the receiving pin that forms the bottom surface for the inlet channel.
  • a seal for forced guidance of the medium to be dispensed via the at least partially circumferential supply channel through the inlet channels and the central chamber is provided by preferably flat contact of the rib forming the side wall of an inlet channel on the end face of the receiving pin.
  • the inlet channels, as well as the central chamber, if applicable, can be provided essentially through the cap in terms of length and / or cross-sectional dimensions.
  • the design of the cap accordingly contributes significantly to the design, alignment and size (cross-sectional area) of the inlet channels, these inlet channels ultimately only being formed in the associated position of the cap on the receiving pin.
  • caps with different inlet channels can be assigned to a nozzle head, for example adapted to the medium to be dispensed and / or adapted to the desired spray result.
  • the caps can differ, for example, in terms of the number of inlet channels, their cross-sectional area transverse to the longitudinal extension of the inlet channels or their orientation relative to the central chamber to be formed.
  • the arrangement of an adapted cap is sufficient.
  • Support areas can also be separated in the vertical direction by a horizontally circumferential free space, at least in the sealing position.
  • This free space which can be formed, for example, in the manner of an annular channel and running at least approximately coaxially to the pump piston axis, is preferably produced between the outer surface of the piston rod and the inner surface of the pump piston facing the piston rod, whereby the free space can also be provided solely as a result of a corresponding recess between the support areas in the area of the inner surface of the pump piston or solely through such a recess in the area of the outer surface of the piston rod.
  • the free space can also be given due to corresponding recess areas opposite the assigned outer or inner surface both on the piston rod and on the pump piston.
  • the spray pump which is preferably a finger-operated spray pump, has a nozzle head in one of the configurations described here.
  • the pump housing of the spray pump can have a guide part, an outlet nozzle and a pump chamber, the pump chamber having an inlet valve and an outlet valve.
  • the spray pump can further comprise a piston rod, a pump piston, a first spring which acts between the piston rod and the pump piston, and a second spring which acts between the piston rod and the pump housing.
  • the pump piston can be displaced to a limited extent relative to the piston rod, between a sealing position and an open position. In the sealing position, the pump piston rests against a sealing extension of the piston rod. In the open position, the pump piston allows a medium passage between the sealing extension and the pump piston. In the sealing position, as well as in the open position, the pump piston can be supported in two axially spaced apart regions on an outer surface of the piston rod.
  • the pump piston can be guided securely on the outer surface of the piston rod both in the sealing position and in the open position, as well as in every position between the sealing position and the open position.
  • the support on (at least) two axially spaced apart areas counteracts a possible tilting of the pump piston from a strict alignment of the piston axis relative to a piston rod center axis.
  • the axially spaced support preferably provides a coaxial alignment of the piston rod and the pump piston in every possible working position of the pump piston relative to the piston rod.
  • the reliable dispensing of reproducible quantities of the medium to be sprayed is given by the tilt-proof arrangement of the pump piston.
  • the first spring and the second spring can be supported on the piston rod on a radially projecting shoulder.
  • the shoulder can extend in a plane oriented transversely to the piston rod axis. Furthermore, the shoulder can be firmly connected to the piston rod or can also be manufactured in one piece with it, for example using the plastic injection molding process.
  • the shoulder for guiding the piston rod interacts with a cylindrical inner surface of the guide part on the pump housing side, with the springs also being radially exposed in their support areas on the piston rod with respect to the guide part.
  • the springs When viewed from the radially inner wall of the guide part in the direction of a central body axis of the guide part, which preferably coincides with the piston rod axis, the springs are exposed.
  • a radially outer overlap of the springs is provided solely by the guide part or by the associated wall of the guide part.
  • a radially outer end face of the shoulder can rest against the inner surface of the guide part in the starting position and in the spraying position, moreover preferably in every intermediate position between the starting position and the spraying position.
  • the shoulder preferably forms a circular-cylindrical surface with its radially outer end face, with a height, viewed in the axial direction, that is one fifth to one third, for example one Quarter, which can correspond to the shoulder radial dimension. In this way, the piston rod is also guided in the guide part without tilting.
  • the piston rod can be composed of a central piston rod part and an outer piston rod cylinder part.
  • the piston rod part and the piston rod cylinder part are preferably firmly connected to one another, at least with regard to the axial alignment, so that no relative displacement can occur in the axial direction.
  • the piston rod part and the piston rod cylinder part can, as is also preferred - when viewed transversely to the piston rod axis - have essentially circular-cylindrical cross-sections.
  • the piston rod cylinder part can have a taper at its piston-side end, which further at the end merges again into a support shoulder which extends further radially with respect to the taper.
  • the tapering can, as is also preferred, result in the horizontally circumferential free space between the axially spaced support areas of the pump piston.
  • the pump piston in particular a pump piston shaft, can be supported axially above and below the taper.
  • the taper can also be assigned to a radially inner shoulder of the pump piston, which shoulder comes into contact with a flank of the taper on the spray head side in the spray position. This can limit the relative displaceability of the pump piston to the piston rod.
  • the shoulder of the pump piston in the starting position can come into contact with the flank of the taper facing the inlet valve side.
  • the sealing extension for interaction with the pump piston can be formed on the central piston rod part.
  • a one-piece, possibly also materially uniform configuration of the piston rod part and the sealing extension can be provided.
  • the central piston rod part can be held in place in the piston rod cylinder part.
  • This locking connection is preferably not operationally releasable.
  • the latching connection preferably results in a fixed connection between the piston rod part and the piston rod-cylinder part, at least in the axial direction.
  • a connection between the parts that is non-rotatable with respect to the longitudinal axis of the piston rod can also be achieved by the latching.
  • the preferred composition of the piston rod from a central piston rod part and an outer piston rod cylinder part results in a preferred embodiment of a medium path between an outer surface of the central piston rod part and an inner surface of the piston rod cylinder part.
  • the medium path can be formed at least in the area in which the cylinder part surrounds the rod part in a cross section transverse to the longitudinal extension of the piston rod in the shape of a circular ring.
  • the pump piston With its circumferential piston wall, the pump piston can be supported on the inner wall of the guide part at least in two areas spaced apart from one another in the axial direction. This is also the Pump piston prevented from tilting around the longitudinal axis of the piston rod.
  • a finger spray pump 1 for the spray discharge of a medium M, in particular a liquid medium.
  • the finger spray pump 1 is designed to be arranged on a container 2 storing the medium M, with a container neck 3 to which the finger spray pump 1 is essentially fixed.
  • the finger spray pump 1 has a finger-operated pump head 4 with an operating surface 5 which, in the exemplary embodiment shown, extends essentially transversely to a central body axis x of the finger spray pump 1 and, in the assigned state, transversely to the body axis of the container 2.
  • the pump head 4 is also designed approximately pot-like overall, with a pot opening pointing downwards.
  • a piston rod 6 is provided centrally and rotationally symmetrical to the body axis x, which extends approximately from the pump head cover offering the actuating surface 5 over the level of the pot opening and protrudes into the area of the container neck 3 in the associated position.
  • the piston rod 6 can be formed in two parts, in particular having a central piston rod part 7 and an outer piston rod-cylinder part 8.
  • the piston rod part 7 and the piston rod cylinder part 8 are arranged concentrically with respect to the body axis x.
  • the piston rod cylinder part 8 which is generally tubular in the direction of extent of the body axis x, is held on the pump head 4 in the area of a receiving bushing 9, which in the exemplary embodiment is formed in one piece and preferably made of the same material with the pump head cover and the pump head wall.
  • the receiving bushing 9 comprises the assigned end of the piston rod cylinder part 8. In this area there is a latching between the piston rod cylinder part 8 and the receiving bushing 9.
  • the inner wall surface of the piston rod cylinder part 8 is preferably circular in a cross section transverse to the body axis x
  • there is a non-circular cross section in the same section with respect to the piston rod part 7, for example an essentially rectangular cross section, with two opposite each other in the cross section End faces can have a wall profile adapted to the curvature of the inner wall of the piston rod cylinder part 8.
  • the cross section of the piston rod part 7 in the penetration area of the cylinder part can result, for example, from a circular disk shape which is cut like a secant on both sides of a geometric center line.
  • the piston rod 6 is held in place on the inside of the wall in the overlap area of the receiving bushing 9 and the piston rod cylinder part 8.
  • the piston rod part 7 is thus fixed to the piston rod cylinder part 8 at least in the direction in which the body axis x extends.
  • the piston rod 6 is held in the piston rod cylinder part 8 in a tilt-proof manner due to the sections which are adjacent to the media paths 10 in the circumferential direction and are adapted to the inner diameter of the piston rod cylinder part 8.
  • the medium paths 10 preferably extend over the entire axial extension length of the piston rod 6, in particular in the entire overlap area of the piston rod part 7 and the piston rod cylinder part 8.
  • the medium paths 10 open out on the underside of the actuating surface, more preferably within the receiving bushing 9, into a radial channel 11 on the pump head side opens into a nozzle head 12.
  • the radial channel 11 is an extension of the medium path and thus part of the same.
  • the piston rod part 7 carries a plate-like end that widens radially all the way around with respect to the piston rod part 7 and also with respect to the piston rod-cylinder part 8. This forms a sealing extension 13 in the form of a piston head of a further provided pump piston 14.
  • the sealing extension 13 is shaped like a plate, with a circumferential extension edge 15 directed downwards, i.e. facing away from the pump head 4, which, viewed in the direction of extension of the body axis x, protrudes beyond a lower surface of the sealing extension 13 pointing in the same direction.
  • a recess 16 is provided on the top of the sealing extension 3, surrounding an end section of the piston rod part 7 that is radially expanded with respect to the piston rod part 7 or with respect to the inner diameter of the piston rod-cylinder part 8.
  • the pump piston 14 is movably arranged in a pump cylinder 17 along the body axis x.
  • the pump piston 14 has a base section which is essentially penetrated by the piston rod part 7, furthermore essentially penetrated by the enlarged foot-side section of the piston rod part 7, is oriented transversely to the body axis x and on which a piston wall 18 is formed on the circumferential edge and radially outward, which - related in the direction of extent of the body axis x - extends both above and below the bottom section on the pump piston side.
  • piston wall sections are interrupted in the axial direction approximately at the level of the base section by a circumferential radial indentation with respect to their radially outer circumferential surface, so that axially spaced circumferential sealing zones that interact with the inner wall of the pump cylinder 17 are produced.
  • the sealing extension 13 extends below the bottom section on the pump piston side.
  • a sealing collar 19 that tapers conically in the direction of the sealing extension 13 and in the direction of the body axis x and leaves the opening as such is formed on the bottom side of the pump piston 14, in particular on the edge of the central opening of the pump piston 14 through which the piston rod part 7 passes. This sits in a starting position according to Figure 1 sealingly in the facing circumferential recess 16 of the sealing extension 13.
  • a preferably circular cylinder-shaped guide section 20 extends away from the sealing extension 13, starting from the bottom section of the pump piston 14 in one piece and preferably made of the same material.
  • the pump cylinder 17 opens axially upwards in the direction of the pump head 4, the end of the pump cylinder 17 in this regard encompassing the piston rod 6 radially as a whole.
  • an axially upwardly directed edge of the pump cylinder 17 extends, preferably at an axial distance from the downwardly directed opening edge of the pump head 4.
  • the axially upwardly directed free end region of the pump cylinder 17 is designed radially on the inside for locking a guide part 21.
  • the guide part 21 has a circular cross section that is essentially adapted to the inner wall of the pump cylinder 17 and extends further radially inward of the pump cylinder latching section.
  • the guide part 21 is supported via a radial collar 22 on the facing front edge of the pump cylinder 17.
  • a collar 23 extends coaxially to the body axis x and leaves a circumferential space around the piston rod 6.
  • the illustrated finger spray pump 1 can be designed for crimp connection with the container 2.
  • a bounce connection can also be provided, as well as a screw connection.
  • the figures show a crimp connection, for which a crimp sleeve 24 is provided, which at the same time comprises the guide part 21 and the pump cylinder 17, this at least in the area of the interaction of the guide part 21 and the latching area of the pump cylinder 17.
  • the crimp sleeve 24 encompasses the container neck 3, the finger spray pump 1 being supported on the end face of the container neck 3 via the crimp sleeve 24, this preferably with the interposition of a sealing washer 25.
  • the piston rod 6 is guided in the guide part 21 via a shoulder 26 formed on the piston rod cylinder part 8, as a result of cooperation the circumferential shoulder face with the cylindrical inner surface of the guide part 21.
  • a surface of the shoulder 26 pointing in the direction of the pump head 4 extends at least approximately in the opening plane of the guide part 21 encompassed by the collar 23 of the guide part 21.
  • Springs in particular return springs, are preferably arranged in the circumferential space resulting between the guide part 21 and the piston rod-cylinder part 8. As also shown, these can be cylinder compression springs.
  • a first spring 27 (piston spring) is provided, which supports the piston rod-cylinder part 8 at one end on the underside of the shoulder 26 and acts on the guide section 20 of the pump piston 14 at the other end.
  • a second spring 28 (pump head spring) is provided coaxially to this first spring 27, and engages around the first spring 27 with an enlarged diameter.
  • This second spring 28 is supported on a radial step of the guide section 20, which at the same time offers a radially inner guide for the pump piston 14, and acts on the underside against the shoulder 26 and via this on the pump head 4.
  • the spring constant of the first spring 27, that is to say of the piston spring, can be selected to be greater than the spring constant of the second spring 28 (pump head spring).
  • an inlet valve E is formed, preferably in the form of a ball valve, to which a connection for a suction tube 30 is connected on the underside. This is immersed in the inside of the container.
  • a pump chamber 31 is established between the pump cylinder base 29, which has the inlet valve E, and the pump piston 14.
  • the end of the piston rod cylinder part 8 facing the pump piston 14 is provided with a taper 32 in the form of a circumferential, radially inwardly directed constriction, which merges again towards the end of the cylinder part 8 into a support shoulder 33 that extends further radially in relation to the taper 32.
  • the latter can have an outer diameter which corresponds to that of the piston rod cylinder part 8 in the area encompassed by the springs 27 and 28.
  • flank 34 on the pump head side which runs at an acute angle of 30 to 60 °, approximately 45 °, to a plane viewed transversely to the body axis x.
  • the taper 32 of the piston rod 6, here in particular of the piston rod cylinder part 8, is assigned to a radially inner shoulder 35 of the pump piston 14 in the area of its guide section 20. This shoulder 35 dips into the resulting circumferential annular space in the area of the taper 32, regardless of the position of the pump head 4 (starting position or spraying position).
  • the pump piston 14 is guided on the piston rod 6 so that it cannot tip over, while maintaining an axial displaceability of the pump piston 14 relative to the piston rod 6. as also shown, by supporting the pump piston 14 via the shoulder 35 on the respectively associated flank in the area of the taper 32.
  • the pump head 4 can be covered by a cover cap.
  • the pump head 4 For the spray discharge of the medium M, the pump head 4 is displaced downwards along the body axis x against the force of the pump head spring (second spring 28) due to the application of pressure on its actuating surface 5, relative to the stationary guide part 21 and the pump cylinder 17.
  • the first spring 27 (piston spring), which is stronger than the second spring 28 (pump head spring), initially loads the pump piston 14 in the closed position of the outlet valve A by pushing the piston wall 18 into the sealing position with respect to the sealing extension 13.
  • the medium M is discharged through the open outlet valve A and the medium path 10 which is now connected to the pump chamber 31.
  • the medium M is sprayed under pressure via the nozzle head 12 until the pump piston 14, which moves via the first spring 27 (piston spring) when the outlet valve A is open, reaches the lowered position in a stop-limited manner.
  • the system After the medium M has been discharged, if the pump head 4 is not acted upon, the system automatically returns to the starting position according to FIG via the piston spring (first spring 27), with the return advancing via the stronger piston spring in order to close the outlet valve A prematurely.
  • the nozzle is essentially composed of a receiving pin 38 assigned to the radial channel 11 and a cap 39 that can be arranged thereon.
  • the receiving pin 38 can, as also shown, be designed in one piece and of the same material with the pump head 4, in this case essentially aligned along a longitudinal axis y directed transversely to the body axis x.
  • a flat, closed end face 40 is formed on the receiving pin 38 in a direction transverse to this axis y and pointing freely radially outward.
  • the radial channel 11 is formed as a fluid path 41 in the direction of its longitudinal axis y. This radial channel 11 extends, with reference to a cross section transversely to the longitudinal axis y, starting from the circumferential surface of the receiving pin 38 in the manner of a groove radially inward.
  • the end face 40 of the receiving pin 38 is surrounded by a circumferential surface 42 running in a stepped manner relative to it. This can, as also shown, arise completely circumferentially, interrupted by the fluid path 41.
  • the assignable cap 39 is pot-shaped, with a cap base 43 and a circumferential cap wall 44.
  • the cap 39 can be plugged onto the receiving pin 38 or latched onto the wall of the pump head 4 surrounding the receiving pin 38 at a radial distance.
  • the cap wall 44 faces the outside of the wall Latching projections 45 open to interact with a latching groove 46 aligned coaxially to the longitudinal axis y.
  • the inner side of the cap wall 44 is shaped according to the assignment position Figure 8 the further guide path in the direction of extent of the longitudinal axis y for the medium M by corresponding overlapping of the radial cutout of the receiving pin 38 to form the fluid path 41.
  • the lower surface of the cap base 43 facing the journal-side end face 40 preferably runs parallel and at an axial distance from the end face 40.
  • the cap base 43 is centrally penetrated by a spray nozzle 48.
  • a rib 49 is formed on the underside of the cap base 43, which according to the illustration in FIG Figure 10 Continuously in plan, inlet channels 50, three of them in the illustrated embodiment, laterally limited.
  • the cap 39 is supported in the assignment position according to FIG Figure 8 via the rib 49 on the end face 40 of the receiving pin 38. This results in a second sealing surface 51.
  • the inlet channels 50 are laterally delimited in a cross section transverse to their longitudinal extent by sections of the rib 49 and delimited on the top by the cap base 43
  • Receiving pin 38 leads to the complete enclosure of an inlet channel 50 using the pin-side end face 40 as the channel bottom.
  • the inlet channels 50 open radially on the outside into an annular channel 52 which is set in the cap assignment position. This results from the step-like offset circumferential surface 42.
  • the guide channels 50 run with reference to a plan in a plane transverse to the longitudinal axis y tangential to a central chamber 53 formed between the end face 40 and the cap base 43.
  • the central chamber 53 is preferably aligned coaxially to the longitudinal axis y, correspondingly having a circular cylindrical circumferential wall, into which wall the inlet channels 50 openly run.
  • a lateral boundary wall which is formed by the rib 49, preferably runs tangentially into the annular wall of the central chamber 53 (cf. Figure 10 ).
  • the inlet channels 50 are arranged uniformly angularly distributed around the longitudinal axis y in plan.
  • the continuous rib viewed in the circumferential direction with reference to the longitudinal axis y, forms both the inner and the outer side wall of each inlet channel 50 and, moreover, a radially outer connecting wall between the inner and outer walls.
  • the cap 39 is seated in a sealing manner, preferably with the entire rib surface directed towards the receiving pin 38, on the end face 40.
  • the sealing surfaces 47 and 51 provide a targeted entry of medium through the liquid path 41 and the inlet channels 50 into the central chamber 53, from which the medium M can emerge in a swirled manner through the spray nozzle 48.
  • FIG 11 shows the possible arrangement and alignment of the inlet channels 50.
  • Each inlet channel 50 has a fluid axis a directed in the direction of the central chamber 53.
  • These (here three) fluid axes a run tangentially into a circle K in the region of the central chamber 53, the center point of which is formed by the longitudinal axis y.
  • the circle K here has a diameter which is smaller than the diameter of the central chamber 53, viewed with respect to the longitudinal axis y and unaffected by the inlet channels 50.
  • the circle K can also be larger than the free diameter or a largest dimension transversely to the longitudinal axis y of the spray nozzle 48.
  • the side walls 54 which are arranged downstream of the fluid axes a in the clockwise direction, run tangentially into the wall of the central chamber 53.
  • the side walls 55 arranged upstream with respect to the fluid axes a in the clockwise direction can run parallel to the side walls 54.
  • An arrangement is shown in which a side wall 55 encloses an acute angle of, for example, 10 to 30 °, further, for example, approximately 15 °, to the associated side wall 54 of the same inlet channel 50.
  • All side walls 54 and 55 can be formed by the completely circumferential rib 49.
  • List of reference symbols 1 Finger spray pump 29 Pump cylinder base 2 container 30th Suction tube 3 Container neck 31 Pumping chamber 4th Pump head 32 rejuvenation 5 Operating area 33 Support shoulder 6th Piston rod 34 Flank 7th Piston rod part 35 shoulder 8th Piston rod cylinder part 36 Support area 9 Receiving socket 37 Support area 10 Medium way 38 Mounting pin 11 Radial channel 39 cap 12th Nozzle head 40 Face 13th Sealing process 41 Fluid path 14th Pump piston 42 Circumferential surface 15th Appendage edge 43 Cap bottom 16 Depression 44 Cap wall 17th Pump cylinder 45 Locking projection 18th Piston wall 46 Locking groove 19th Sealing collar 47 Sealing surface 20th Guide section 48 Spray nozzle 21 Leadership part 49 rib 22nd Radial collar 50 Inlet channel 23 collar 51 Sealing surface 24 Crimp barrel 52 Ring channel 25th Sealing washer 53 Central chamber 26th shoulder 54 Side wall 27 first spring 55 Side wall 28 second spring a Fluid axis x Body axis y Longitudinal

Landscapes

  • Reciprocating Pumps (AREA)
  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP20160358.6A 2016-08-04 2017-07-31 Düsenkopf für eine sprühpumpe sowie sprühpumpe mit dem düsenkopf Active EP3689472B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016114456.8A DE102016114456A1 (de) 2016-08-04 2016-08-04 Fingerspraypumpe sowie Düsenkopf für eine Sprühpumpe
EP17755073.8A EP3493917B1 (de) 2016-08-04 2017-07-31 Fingerspraypumpe
PCT/EP2017/069285 WO2018024657A2 (de) 2016-08-04 2017-07-31 Fingerspraypumpe sowie düsenkopf für eine sprühpumpe

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP17755073.8A Division EP3493917B1 (de) 2016-08-04 2017-07-31 Fingerspraypumpe

Publications (2)

Publication Number Publication Date
EP3689472A1 EP3689472A1 (de) 2020-08-05
EP3689472B1 true EP3689472B1 (de) 2021-11-10

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP20160358.6A Active EP3689472B1 (de) 2016-08-04 2017-07-31 Düsenkopf für eine sprühpumpe sowie sprühpumpe mit dem düsenkopf
EP17755073.8A Active EP3493917B1 (de) 2016-08-04 2017-07-31 Fingerspraypumpe

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17755073.8A Active EP3493917B1 (de) 2016-08-04 2017-07-31 Fingerspraypumpe

Country Status (7)

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US (1) US10512926B2 (ru)
EP (2) EP3689472B1 (ru)
CN (1) CN109789431B (ru)
CA (1) CA3032873C (ru)
DE (1) DE102016114456A1 (ru)
RU (1) RU2738445C2 (ru)
WO (1) WO2018024657A2 (ru)

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BR112022020641A2 (pt) 2020-04-14 2022-11-29 Basf Se Compostos, uso de compostos, mistura pesticida, composições agroquímicas ou veterinárias, métodos para controlar pragas invertebradas, proteger plantas em crescimento e tratar ou proteger animais contra infestação ou infecção por parasitas e semente
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CN215141141U (zh) * 2021-05-19 2021-12-14 余姚市丹丹喷雾器有限公司 一种全pp材质按头

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Also Published As

Publication number Publication date
CN109789431A (zh) 2019-05-21
RU2019105552A (ru) 2020-09-04
RU2019105552A3 (ru) 2020-10-27
WO2018024657A2 (de) 2018-02-08
RU2738445C2 (ru) 2020-12-14
DE102016114456A1 (de) 2018-02-08
US20190151877A1 (en) 2019-05-23
WO2018024657A3 (de) 2018-04-19
EP3689472A1 (de) 2020-08-05
CA3032873A1 (en) 2018-02-08
CN109789431B (zh) 2021-05-11
EP3493917B1 (de) 2020-03-11
US10512926B2 (en) 2019-12-24
EP3493917A2 (de) 2019-06-12
CA3032873C (en) 2021-10-12

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