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EP3493917B1 - Pompe de pulvérisation à doigt - Google Patents

Pompe de pulvérisation à doigt Download PDF

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Publication number
EP3493917B1
EP3493917B1 EP17755073.8A EP17755073A EP3493917B1 EP 3493917 B1 EP3493917 B1 EP 3493917B1 EP 17755073 A EP17755073 A EP 17755073A EP 3493917 B1 EP3493917 B1 EP 3493917B1
Authority
EP
European Patent Office
Prior art keywords
piston rod
pump
piston
finger
pump according
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
EP17755073.8A
Other languages
German (de)
English (en)
Other versions
EP3493917A2 (fr
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
Original Assignee
RPC Bramlage GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RPC Bramlage GmbH filed Critical RPC Bramlage GmbH
Priority to EP20160358.6A priority Critical patent/EP3689472B1/fr
Publication of EP3493917A2 publication Critical patent/EP3493917A2/fr
Application granted granted Critical
Publication of EP3493917B1 publication Critical patent/EP3493917B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B11/1023—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
    • 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
    • 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 finger spray pump according to the features of the preamble of claim 1.
  • Finger spray pumps of the type in question are known. It is, for example, on the EP 1 935 503 B1 ( US 8,056,770 B2 ) referred. Such finger spray pumps are used, for example, for spray discharge of a liquid medium.
  • the outlet valve preferably only opens when a predetermined pressure is reached within the pump chamber after the pump head has been appropriately finger-pressed, after which the medium can exit via the medium path and the outlet nozzle.
  • the pump head can be further displaced, in particular lowered, by overcoming the force of one of the springs, in order to push out the medium located in the pump chamber.
  • nozzle head designed on a finger spray pump
  • nozzle heads are used to spray the medium when the spray pump is actuated, with swirling of the medium being achieved in the nozzle head in the region of the central chamber before it is dispensed.
  • the receiving pin is completely cylindrical with regard to its peripheral surface educated. Furthermore, it is from the EP 711571 A1 a nozzle head with a receiving pin is known, which has a graduated circumferential surface having. Branch channels are formed in the cap, which run radially outward to the cap wall delimiting there.
  • the piston rod cylinder part is formed cylindrically continuous at the end with respect to a movement of the pump piston.
  • a finger spray pump is known in which the piston is in its lowest part in a support system on a valve part in a rest position.
  • the invention is concerned with the task of providing a finger spray pump with a favorable design in relation to the support of the pump piston.
  • the piston rod is composed of a central piston rod part and an outer piston rod-cylinder part, that the piston rod-cylinder part has a taper at its end on the piston side, which tapers further into an end compared to the taper, the support shoulder extends further radially, and that the taper is assigned to a radially inner shoulder of the pump piston, which comes into contact with a spray-side flank of the taper in the spray position.
  • the pump piston is preferably given a compact design of the pump both in the sealing position and in the open position, as well as in each case the position between the sealing position and the open position, securely guided on the outer surface of the piston rod.
  • 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 central axis. Rather, due to the axially spaced support, a coaxial alignment of the piston rod is preferred in every possible working position of the pump piston relative to the piston rod and pump pistons. The safe dispensing of reproducible quantities of the medium to be sprayed is ensured by the tilt-proof arrangement of the pump piston.
  • the support shoulder can have an outer diameter which corresponds to that of the piston rod cylinder part in a region encompassed by the springs.
  • the boundary surfaces of the inlet channels can be formed exclusively in the cap.
  • the inlet channels, as well as the central chamber, if applicable, can essentially be provided by the cap in terms of length and / or cross-sectional dimensions.
  • 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 spraying result.
  • the caps can differ, for example, with regard to the number of inlet channels, their cross-sectional area transversely to the longitudinal extent of the inlet channels or their orientation relative to the central chamber to be formed.
  • the arrangement of an adapted cap is sufficient.
  • the support areas can also be separated at least in the sealing position in the vertical direction by a horizontally surrounding free space.
  • This free space which can, for example, form an annular channel and run at least approximately coaxially to the pump piston axis, preferably results between the outer surface of the piston rod and the inner surface of the pump piston facing the piston rod, wherein the free space can also be provided solely due to a corresponding recess between the support regions 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 as a result of corresponding recess areas with respect to the assigned outer or inner surface both on the piston rod and on 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.
  • the shoulder can be firmly connected to the piston rod or can also be produced in one piece with it, for example in the plastic injection molding process.
  • the shoulder for guiding the piston rod cooperates with a cylindrical inner surface of the guide part on the pump housing side, the springs also being radially exposed in their support regions 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 one The springs are covered only by the guide part or by the associated wall of the guide part.
  • a radially outer end face of the shoulder can rest on the inner surface of the guide part in the starting position and in the spraying position, moreover preferably in any intermediate position between the starting and spraying positions.
  • the shoulder with its radially outer end face, preferably forms a circular-cylindrical surface with a height viewed in the axial direction, which can correspond to a fifth to a third, for example a quarter, of the shoulder radial dimension.
  • the piston rod is 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 in the axial direction can occur.
  • the piston rod part and the piston rod cylinder part can, as is also preferred — viewed transversely to the piston rod axis — have essentially circular cylindrical cross sections.
  • the piston rod cylinder part has a taper at its piston end, which continues at the end into a support shoulder that 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 regions of the pump piston. This can result in the pump piston, in particular a pump piston shaft, being supported axially above and below the taper.
  • the taper is also 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 result in a Limitation of the relative displacement of the pump piston to the piston rod can be achieved.
  • the shoulder of the pump piston in the starting position can come into contact with the flank of the taper facing the inlet valve.
  • the sealing extension for interaction with the pump piston can be formed on the central piston rod part.
  • a one-piece, possibly also material-uniform design of the piston rod part and sealing extension can be provided.
  • the central piston rod part can be latched 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 rotationally fixed connection between the parts with respect to the longitudinal axis of the piston rod can be achieved.
  • 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 in 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 form of an annular segment.
  • the circumferential piston wall of the pump piston can be supported on the inner wall of the guide part at least in two regions spaced apart in the axial direction. This also prevents the pump piston from tilting about the longitudinal axis of the piston rod.
  • the receiving pin can, as is also preferred, have a closed, flat end face, which at the same time can be used to form the boundary surfaces of the inlet channels.
  • the end face forms the bottom face of each inlet channel when the cap is arranged.
  • the end face can be surrounded by a circumferential surface which extends in a stepped manner and extends at least over the circumferential angle in which the inlet channels are spaced apart.
  • the graduated The circumferential surface can form a supply channel for the supply channels, which runs at least over a partial circumference, which supply channel is connected to the liquid path in the region of the receiving pin, which is formed in the direction of the longitudinal axis.
  • the feed channel running in the circumferential direction is only formed when the cap is arranged 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 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 locating 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 fluid axes of the inlet channels enter tangentially is chosen to be smaller than a circle given by the circumferential wall of the central chamber.
  • the orientation of the inlet channels can be selected such that a side wall extending in the longitudinal direction of the inlet channel merges tangentially into the chamber wall when the inlet channel freely enters the central chamber.
  • the radius of the circle can be smaller than a largest dimension of the central chamber transverse to the longitudinal axis.
  • the diameter of the circle is equal to or smaller than a circle which is laid out 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 can be formed by a rib formed in the cap.
  • a rib projects beyond a ceiling surface formed by the cap for an inlet channel in the axial direction and is supported in the assigned position on the end face of the receiving pin which forms the base surface for the inlet channel.
  • a seal for the forced guidance of the medium to be dispensed via the at least partially circumferential feed 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 side walls of all inlet channels can be formed by only one rib which is designed to run transversely to the longitudinal axis with respect to a cross section through the cap.
  • a finger spray pump 1 for 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 actuating 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, extends transversely to the body axis of the container 2.
  • the pump head 4 is furthermore approximately pot-shaped, with a pot opening pointing downward.
  • a piston rod 6 is provided centrally and rotationally symmetrically with respect to the body axis x, which extends approximately from the pump head cover offering the actuating surface 5 beyond the plane of the pot opening and projects into the region of the container neck 3 in the assigned position.
  • the piston rod 6 can, as is also preferred, be formed in two parts, in particular having a central piston rod part 7 and an outer piston rod cylinder part 8.
  • Piston rod part 7 and piston rod cylinder part 8 are arranged concentrically with respect to the body axis x.
  • the receptacle 9 includes the associated end of the piston rod cylinder part 8. In this area there is a latching between the piston rod cylinder part 8 and the receptacle 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, in a preferred embodiment, in the same section with respect to the piston rod part 7, there is an out-of-round cross section, for example an essentially rectangular cross section, with two having opposite cross sections 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 area of penetration of the cylinder part can result, for example, from a circular disk shape which is trimmed secant-like on both sides of a geometric center line.
  • the piston rod 6 is held in the overlap region of the receiving bushing 9 and the piston rod cylinder part 8 on the latter on the inside of the wall.
  • the piston rod part 7 is fixed to the piston rod cylinder part 8 at least in the direction of extension of the body axis x.
  • the piston rod 6 is secured against tilting in 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 on the underside of the actuating surface, more preferably inside the receiving bushing 9, into a radial channel 11 on the pump head side, the latter in turn 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 which widens radially all around in relation to the piston rod part 7 and also with respect to the piston rod and cylinder part 8. This forms a sealing extension 13 in the form of a piston crown of a further provided pump piston 14.
  • the sealing extension 13 is plate-shaped, with a downward, i.e. The peripheral extension edge 15 facing away from the pump head 4 and, viewed in the direction of extension of the body axis x, projects beyond a lower surface of the sealing extension 13 pointing in the same direction.
  • a depression 16 is provided on the upper side of the sealing extension 3, surrounding an end portion of the piston rod part 7 that is radially widened compared to the piston rod part 7 or the inner diameter of the piston rod cylinder part 8.
  • the pump piston 14 is arranged to be movable in a pump cylinder 17 along the body axis x.
  • the pumping piston 14 has a bottom section, which is essentially penetrated by the piston rod part 7 and further essentially by the expanded foot-side section of the piston rod part 7 and is oriented transversely to the body axis x and on which a piston wall 18 is molded, radially on the outside, around the periphery to the direction of extension of the body axis x - both above and below the pump piston-side bottom section.
  • piston wall sections are interrupted in the axial direction approximately at the level of the base section by a circumferential radial depression with respect to their radially outer circumferential surface, so that axially spaced, circumferential sealing zones interact with the cylinder inner wall of the pump cylinder 17.
  • the sealing extension 13 extends in the state of use and, according to the representations, below the base portion on the pump piston side.
  • a sealing collar 19 is formed which 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. This sits in a starting position Figure 1 sealing in the facing circumferential depression 16 of the sealing extension 13.
  • a preferably circular cylindrical guide section 20 extends in one piece and preferably is made of the same material.
  • the inside diameter thereof is first and essentially adapted to the outside diameter of the piston rod cylinder part 8.
  • the pump cylinder 17 opens axially upwards in the direction of the pump head 4, with the relevant end of the pump cylinder 17 radially enclosing the piston rod 6 as a whole.
  • the non-actuated pump head position according to Figure 1 extends an edge edge of the pump cylinder 17 pointing axially upward, preferably at an axial distance from the edge edge of the pump head 4 directed downward.
  • the axially upward free end region of the pump cylinder 17 is formed radially on the inside for the locking fixing of a guide part 21.
  • the guide part 21 has a circular cross section which is substantially matched 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 by 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 with respect to the piston rod 6.
  • the finger spray pump 1 shown can be designed for crimp connection to the container 2.
  • a bump connection can also be provided, in addition a screw connection.
  • a crimp connection is shown in the figures, for which purpose a crimp sleeve 24 is provided, which at the same time comprises the guide part 21 and the pump cylinder 17, at least in the region of the interaction of the guide part 21 and the latching region of the pump cylinder 17.
  • the crimp sleeve 24 encompasses the container neck 3, wherein the finger spray pump 1 is supported on the end face of the container neck 3 via the crimp sleeve 24, 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, due to the interaction of the circumferential shoulder end face with the cylindrical inner surface 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 thus initially provided, which supports the piston rod cylinder part 8 on one side on the underside on the shoulder 26 and on the other side acts on the guide section 20 of the pump piston 14.
  • a second spring 28 (pump head spring) is provided coaxially with this first spring 27 and surrounds the first spring 27 with an enlarged diameter.
  • This second spring 28 is supported on a radial step of the guide section 20, which also 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 the piston spring, can be chosen to be larger 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 dips into the inside of the container.
  • a pump chamber 31 is established in the pump cylinder 17 between the pump cylinder base 29 having 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 inward constriction which, towards the end of the cylinder part 8, merges again into a support shoulder 33 which extends further radially with respect to the taper 32.
  • the latter can have an outer diameter which corresponds to that of the piston rod-cylinder part 8 in the region encompassed by the springs 27 and 28.
  • flank 34 on the pump head side which extends 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 the piston rod cylinder part 8, is assigned to a radially inner shoulder 35 of the pump piston 14 in the region of its guide section 20. This shoulder 35 is immersed regardless of the position of the pump head 4 (starting position or spray position) resulting circumferential annular space in the region of the taper 32.
  • the pump piston 14 is guided in a tilt-proof manner on the piston rod 6, while maintaining an axial displacement of the pump piston 14 relative to the piston rod 6.
  • This relative axial displacement can, as is preferred, be stop-limited, e.g. , as also shown, by supporting the pump piston 14 over the shoulder 35 on the respectively assigned flank in the area of the taper 32.
  • the pump head 4 can be covered by a cover cap in the non-use position.
  • the pump head 4 In order to discharge the medium M, the pump head 4 is displaced downward against the force of the pump head spring (second spring 28) along its body surface x, against the force of the pump head spring (second spring 28), this relative to the fixed 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 spring force of the piston spring (first spring 27) is only overcome when a pressure exceeding the spring force of the piston spring (first spring 27) in the pump chamber 31 below the pump piston 14 in the pump cylinder 17 is overcome, which leads to a relative displacement of the piston rod 6 with the sealing extension 13 leads to the pump piston 14 (cf. Figure 5 ).
  • the medium M is discharged through the opened outlet valve A and the medium path 10 now connected to the pump chamber 31.
  • the medium M is sprayed out under pressure via the nozzle head 12 until the pump piston 14, which moves in the open state of the outlet valve A via the first spring 27 (piston spring), reaches the lowered position in a stop-limited manner.
  • the system automatically returns to the starting position according to FIG. 1 when there is no action on the pump head 4, as a result of the corresponding resetting of the pump head 4 with its piston rod 6 and sealing extension 13 via the pump head spring (second spring 28) and the pump piston 14 via the piston spring (first spring 27), whereby the return is advanced via the stronger piston spring so as to close the outlet valve A prematurely.
  • the Figures 8 to 10 show a possible configuration of the nozzle head 12.
  • the nozzle is essentially composed of a receiving pin 38 assigned to the radial channel 11 and a cap 39 which can be arranged thereon.
  • the receiving pin 38 can be formed in one piece and with the same material as 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 transversely to this axis y and pointing radially outward.
  • This radial channel 11 extends with respect to a cross section transverse to the longitudinal axis y, starting from the circumferential outer surface of the receiving pin 38 in a groove-like manner radially inward.
  • the end face 40 of the receiving pin 38 is surrounded by a circumferential surface 42 which extends in a stepped manner therefrom. As also shown, this can result in the entire circumference, interrupted by the liquid 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 mounting pin 38 or can be latched on the wall of the pump head 4 surrounding the mounting pin 38 with a radial spacing.
  • the cap wall 44 has locking projections 45 on the outside of the wall for interaction with a locking groove 46 aligned coaxially with the longitudinal axis y.
  • the inside wall of the cap wall 44 forms in the assigned position in accordance with Figure 8 the further guide path in the direction of extension of the longitudinal axis y for the medium M by corresponding overlap of the radial free cut of the receiving pin 38 to form the liquid path 41.
  • the lower surface of the cap base 43 facing the pin-side end surface 40 preferably runs parallel and at an axial distance from the end surface 40.
  • the cap base 43 is penetrated centrally by a spray nozzle 48.
  • a rib 49 is formed on the underside of the cap base 43 and, as shown in FIG Figure 10 Inlet channels 50 running through the floor plan, three in the exemplary embodiment shown, limited laterally.
  • the cap 39 is supported in the associated position Figure 8 from 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 by sections of the rib 49 and on the upper side delimited by the cap base 43. Only the arrangement of the cap 39 on the receiving pin 38 leads to the complete encirclement of an inlet channel 50 using the pin-side end face 40 as Canal floor.
  • the inlet channels 50 open radially outward into an annular channel 52 which is set in the cap assignment position. This results from the stepped circumferential surface 42.
  • the guide channels 50 run tangentially to a central chamber 53 formed between the end face 40 and the cap base 43 in a plane transverse to the longitudinal axis y.
  • the central chamber 53 is preferably aligned coaxially to the longitudinal axis y, correspondingly having a circular cylindrical wall, into which wall the inlet channels 50 openly enter.
  • a lateral boundary wall which is formed by the rib 49, preferably runs tangentially into the ring wall of the central chamber 53 (cf. Figure 10 ).
  • the inlet channels 50 are evenly distributed angularly in the plan around the longitudinal axis y.
  • the continuous rib When viewed in the circumferential direction with respect to the longitudinal axis y, the continuous rib 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 on the end face 40, preferably with the entire rib surface facing the receiving pin 38.
  • 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 swirled through the spray nozzle 48.
  • FIG 11 shows the possible arrangement and orientation 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 area of the central chamber 53, the center of which is formed by the longitudinal axis y.
  • the circle K in this case has a diameter which is smaller than the diameter of the central chamber 53 which is not influenced by the inlet channels 50 and which is considered in relation to the longitudinal axis y.
  • the circle K can moreover be dimensioned larger than the free diameter or a large dimension transversely to the longitudinal axis y of the spray nozzle 48.
  • the related to the Fluid axes a in the clockwise direction upstream side walls 55 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.
  • ⁇ b> List of reference symbols ⁇ /b> 1 Finger spray pump 29 Pump cylinder bottom 2nd container 30th Suction tube 3rd Container neck 31 Pumping chamber 4th Pump head 32 rejuvenation 5 Operating area 33
  • Support shoulder 6 Piston rod 34
  • Flank 7 Piston rod part
  • shoulder 8th Piston rod cylinder part 36
  • Support area 9 Receptacle 37
  • Radial collar 50 Inlet channel 23 collar 51
  • Sealing surface 24th Crimp sleeve 52
  • Ring channel 25th Sealing washer 53
  • Side wall 28 Second spring a

Landscapes

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

Claims (14)

  1. Pompe de pulvérisation à doigt (1) pour l'expulsion par pulvérisation d'un fluide (M), comprenant une tête de pompe actionnable avec un/des doigt (s) (4) et pouvant être déplacée par rapport à un boîtier de pompe entre une position de pulvérisation et une position initiale, dans laquelle le boîtier de pompe présente une partie de guidage (21), en outre une buse de sortie, une chambre de pompe (31), la chambre de pompe (31) présentant une soupape d'entrée (E) et une soupape de sortie (A), une tige de piston (6), un piston de pompe (14), un premier ressort (27) agissant entre la tige de piston (6) et le piston de pompe (14), et un deuxième ressort (28) agissant entre la tige de piston (6) et le boîtier de pompe, dans laquelle en outre le piston de pompe (14) peut se déplacer de manière limitée par rapport à la tige de piston (6) entre une position d'étanchéité et une position d'ouverture pour former la soupape de sortie (A), le piston de pompe (14), dans la position d'étanchéité, étant en appui contre un appendice d'étanchéité (13) de la tige de piston (6) et, dans la position d'ouverture, permet un passage de fluide entre l'appendice d'étanchéité (13) et le piston de pompe (14), dans laquelle en outre le piston de pompe (14), dans la position d'étanchéité de même que dans la position d'ouverture, est supporté par une surface extérieure de la tige de piston (6) au niveau de deux zones (36, 37) axialement distantes l'une par rapport à l'autre, caractérisée en ce que la tige de piston (6) est composée d'une partie centrale de tige de piston (7) et d'une partie cylindrique extérieure de tige de piston (8), en ce que la partie cylindrique de tige de piston (8) présente sur son extrémité côté piston un rétrécissement (32) qui, plus loin du côté de l'extrémité, se transforme à nouveau en un épaulement d'appui (33) s'étendant radialement plus loin par rapport au rétrécissement (32), et en ce que le rétrécissement (32) est associé à un épaulement (35) radialement intérieur du piston de pompe (14) qui vient en appui, dans la position de pulvérisation, avec un flanc (34) du rétrécissement (32) côté tête de pulvérisation.
  2. Pompe de pulvérisation à doigt selon la revendication 1, caractérisée en ce qu'au moins dans la position d'étanchéité, les zones de support (36, 37) sont séparées dans la direction verticale par un espace libre périphérique horizontal.
  3. Pompe de pulvérisation à doigt selon l'une des revendications précédentes, caractérisée en ce que le premier ressort (27) et le deuxième ressort (28) s'appuient sur la tige de piston (6) sur un épaulement (26) faisant radialement saillie et l'épaulement (26) coopère avec une surface intérieure cylindrique de la partie de guidage (21) côté boîtier de pompe pour guider la tige de piston (6), les ressorts (27, 28) étant en outre radialement libres dans leurs zones d'appui sur la tige de piston (6) par rapport à la partie de guidage (21).
  4. Pompe de pulvérisation à doigt selon la revendication 3, caractérisée en ce qu'une surface frontale radialement extérieure de l'épaulement (26), dans la position initiale et dans la position de pulvérisation, est attenante à/repose sur la surface intérieure de la partie de guidage (21).
  5. Pompe de pulvérisation à doigt selon l'une des revendications précédentes, caractérisée en ce que l'appendice d'étanchéité (13) est formé sur la partie centrale de tige de piston (7).
  6. Pompe de pulvérisation à doigt selon l'une des revendications précédentes, caractérisée en ce que la partie centrale de tige de piston (7) est maintenue par encliquetage dans la partie cylindrique de tige de piston (8).
  7. Pompe de pulvérisation à doigt selon la revendication 6, caractérisée en ce qu'un trajet de fluide (10) est prévu entre une surface extérieure de la partie centrale de tige de piston (7) et une surface intérieure de la partie cylindrique de tige de piston (8).
  8. Pompe de pulvérisation à doigt selon l'une quelconque des revendications précédentes, caractérisée par un téton de réception (38) dans la tête de pompe (4) et un capuchon (39) présentant une buse de pulvérisation (48) qui est maintenue encliquetée dans la tête de pompe (4) en association avec le téton de réception (38), dans laquelle le téton de réception (38) présente un axe longitudinal (y) s'étendant dans la direction de mise en place du capuchon (39) et un chemin de fluide (41) est formé dans le téton de réception (38) dans la direction de l'axe longitudinal (y) et mène à une chambre centrale (53) en amont de la buse de pulvérisation, dans laquelle en outre la chambre centrale (53) présente des canaux d'arrivée (50) qui s'étendent dans un plan perpendiculaire à l'axe longitudinal (y) et qui sont formés en partie par une surface intérieure du capuchon (39) et en partie par une surface extérieure du téton de réception (38), dans laquelle en outre les surfaces de délimitation des canaux d'arrivée (50) sont formées exclusivement dans le capuchon (39), à l'exception d'une surface de fond.
  9. Pompe de pulvérisation à doigt selon la revendication 8, caractérisée en ce que le téton de réception (38) présente une surface frontale plane fermée (40) qui est également utilisée pour former les surfaces de délimitation des canaux d'arrivée (50).
  10. Pompe de pulvérisation à doigt selon la revendication 9, caractérisée en ce que la surface frontale (40) est entourée d'une surface périphérique (42) étagée par rapport à cette surface frontale et qui s'étend au moins sur l'angle périphérique à l'intérieur duquel les canaux d'arrivée (50) sont espacés entre eux.
  11. Pompe de pulvérisation à doigt selon l'une quelconque des revendications 8 à 10, caractérisée en ce que, concernant la chambre centrale (53), les canaux d'arrivée (50) présentent des axes médians d'écoulement (a) qui sont tangents à un cercle (K) dont le centre est formé par l'axe longitudinal (y).
  12. Pompe de pulvérisation à doigt selon la revendication 11, caractérisée en ce qu'un rayon du cercle (K) est plus petit qu'une dimension de la chambre centrale (53) qui est la plus grande transversalement à l'axe longitudinal (y).
  13. Pompe de pulvérisation à doigt selon l'une des revendications 8 à 12, caractérisée en ce qu'une paroi latérale (54, 55) d'un canal d'arrivée (50) est formée par une nervure (49) formée dans le capuchon (39).
  14. Pompe de pulvérisation à doigt selon la revendication 13, caractérisée en ce que toutes les parois latérales (54, 55) sont formées par une nervure continue (49).
EP17755073.8A 2016-08-04 2017-07-31 Pompe de pulvérisation à doigt Active EP3493917B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20160358.6A EP3689472B1 (fr) 2016-08-04 2017-07-31 Tête de buse pour une pompe de pulvérisation et pompe de pulvérisation pourvue de la tête de buse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016114456.8A DE102016114456A1 (de) 2016-08-04 2016-08-04 Fingerspraypumpe sowie Düsenkopf für eine Sprühpumpe
PCT/EP2017/069285 WO2018024657A2 (fr) 2016-08-04 2017-07-31 Pompe de pulvérisation actionnée par un doigt et tête de buse pour pompe de pulvérisation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP20160358.6A Division EP3689472B1 (fr) 2016-08-04 2017-07-31 Tête de buse pour une pompe de pulvérisation et pompe de pulvérisation pourvue de la tête de buse

Publications (2)

Publication Number Publication Date
EP3493917A2 EP3493917A2 (fr) 2019-06-12
EP3493917B1 true EP3493917B1 (fr) 2020-03-11

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EP20160358.6A Active EP3689472B1 (fr) 2016-08-04 2017-07-31 Tête de buse pour une pompe de pulvérisation et pompe de pulvérisation pourvue de la tête de buse
EP17755073.8A Active EP3493917B1 (fr) 2016-08-04 2017-07-31 Pompe de pulvérisation à doigt

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

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Also Published As

Publication number Publication date
EP3689472A1 (fr) 2020-08-05
US20190151877A1 (en) 2019-05-23
CN109789431A (zh) 2019-05-21
WO2018024657A3 (fr) 2018-04-19
DE102016114456A1 (de) 2018-02-08
EP3689472B1 (fr) 2021-11-10
EP3493917A2 (fr) 2019-06-12
WO2018024657A2 (fr) 2018-02-08
RU2019105552A3 (fr) 2020-10-27
CA3032873A1 (fr) 2018-02-08
US10512926B2 (en) 2019-12-24
CA3032873C (fr) 2021-10-12
RU2738445C2 (ru) 2020-12-14
CN109789431B (zh) 2021-05-11
RU2019105552A (ru) 2020-09-04

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