EP2648853A1 - Trigger dispensing device with a supply valve - Google Patents
Trigger dispensing device with a supply valveInfo
- Publication number
- EP2648853A1 EP2648853A1 EP11813567.2A EP11813567A EP2648853A1 EP 2648853 A1 EP2648853 A1 EP 2648853A1 EP 11813567 A EP11813567 A EP 11813567A EP 2648853 A1 EP2648853 A1 EP 2648853A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- dispensing
- previous
- frame
- blocking element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 230000000903 blocking effect Effects 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims 2
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000002547 anomalous effect Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000006353 oxyethylene group Chemical group 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
- B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
-
- 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
- B05B11/1009—Piston pumps actuated by a lever
- B05B11/1011—Piston pumps actuated by a lever 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
- B05B11/01—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
- B05B11/1045—Sealing or attachment arrangements between pump and 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
- B05B11/1066—Pump inlet valves
- B05B11/1067—Pump inlet valves actuated by pressure
- B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
Definitions
- the present invention relates to a trigger dispensing device for a liquid.
- the known trigger dispensing devices envisage trigger-operated pumping means, which aspirate the liquid into a pumping chamber and dispense it outwards by means of a piston.
- valves have numerous drawbacks: often, subjected to the pressure of the liquid, they cause a fall in the dispensing pressure on account of the leaks between the valves and the components supporting them.
- the purpose of the present invention is to satisfy the aforementioned requirements and overcome the drawbacks of the prior solutions, by making a trigger dispensing device with a supply valve which behaves optimally when opened. [0007] Such purpose is achieved by a dispensing device according to claim 1.
- FIG. 1 shows a cross-section view of the dispensing device according to the present invention, according to one embodiment
- figure 2 shows an enlargement of the area II in figure 1;
- FIG. 3a and 3b show a respective rear and front view of a supply valve of the dispensing device in figure 1;
- FIG. 4a and 4b show a respective rear and front view of an attachment element of the dispensing device in figure 1;
- FIG. 5 shows a cross-section view of a supply valve according to the present invention, according to yet a further embodiment.
- a dispensing assembly for a liquid comprises a container, to contain the liquid to be dispensed, and a manually operated trigger dispensing device, mechanically connected to the container.
- the device 1 comprises a fastening 2 for connection to the neck of the container, for example for a threaded or bayonet connection.
- the device 1 further comprises a frame 3, generally made in a relatively rigid frame material for the support of the other components.
- the device 1 comprises pumping means suitable to aspirate the liquid from the container and to spray it outside the device itself.
- the pumping means comprise a pumping chamber 4 suitable for being placed in fluidic communication with the container; for example, the frame 3 comprises an aspiration duct 6 open at one end towards the container and such as to come out, at the opposite end, in the chamber 4.
- the pumping means further comprise a piston 8, sealingly sliding in the chamber 4 s along a piston axis X.
- the frame 3 comprises a chamber wall 10a, for example cylindrical, with its axis coinciding with the piston axis X, which annularly defines the chamber 4, and an end wall 10b, for example perpendicular to the piston axis X, placed opposite the piston head 8, which defines the bottom of the chamber 4.
- a chamber wall 10a for example cylindrical, with its axis coinciding with the piston axis X, which annularly defines the chamber 4
- an end wall 10b for example perpendicular to the piston axis X, placed opposite the piston head 8, which defines the bottom of the chamber 4.
- the aspiration duct 6 comes out in the pumping chamber 4 through the aspiration aperture 6a made in said end wall 10b.
- the device 1 comprises manually-operated actuation means, suitable for being moved to move the piston 8 in translation.
- the actuation means comprise a trigger 12, supported by the frame 3, for example hinged to it or translatable on it.
- the trigger 12 is engageable with the piston 8 to move said piston in translation.
- the piston 8 slides in the chamber 4 between an initial rest or rearward or start stroke position, wherein the volume of the chamber 4 is maximum, and a final, or forward or end stroke dispensing position, wherein the volume of the chamber is minimum.
- the actuation means comprise return means suitable for pushing the trigger towards the initial rest position.
- said return means comprise an elastic element.
- the device 1 comprises a dispensing duct 14 suitable for being placed in fluidic communication at an entrance aperture 14a with the pumping chamber 4 and, at an exit aperture 14b with the outside environment, to spray the liquid into the environment .
- the frame 3 comprises a duct wall 16 annular around a dispensing axis Z which annularly defines the dispensing duct 14.
- the dispensing duct extends along the dispensing axis Z, preferably separate from and parallel to the piston axis X.
- the entrance aperture 14a is delimited circumferentially by an axial boss or annular step (14c) projecting axially.
- the entrance aperture 14a is defined by the aperture generated by a bevel 14d placed at the end of the dispensing duct 14.
- the frame 3 comprises an attachment wall 17, for example an annular wall axial symmetric to the dispensing axis Z.
- the attachment wall 17 ends with an annular boss 17a which extends radially outwards so as to form an undercut.
- a crown surface 18 is made which at least partially surrounds said entrance aperture 14a.
- the crown surface 18 is interrupted by an intermediate passage 19 which comes out in the pressure chamber 4, to place said pressure chamber in communication with the dispensing duct 14.
- the device 1 comprises a nozzle 20 applied to the output end 14b of the dispensing duct 14, to place the outgoing liquid in vortication or to finely nebulise it or to open/close the output of the dispensing duct.
- the device 1 comprises valve aspiration means suitable for permitting the passage of liquid from the aspiration duct 6 to the pressure chamber 4 when the piston 8 returns from the final position to the initial position and suitable to limit or prevent the return of the liquid from the pumping chamber 4 to the aspiration duct 6 when the piston moves from the initial position to the final position.
- the valve aspiration means comprise an aspiration valve 30 suitable for fluidically separating the pumping chamber 4 from the aspiration duct 6, applied to the end wall 10b of the chamber 4, so as to surmount or cover the aspiration aperture 6a.
- the device 1 comprises supply valve means suitable for allowing the passage of pressurised liquid from the pumping chamber 4 to the dispenser duct 14 when the piston moves from the initial position to the final position.
- the supply valve means comprise a supply valve 60, applied to the intake of the dispensing duct 14, that is at the entrance aperture 14a.
- the supply valve 60 comprises a membrane 62 which surmounts the entrance aperture 14a, having a front side 64, facing the dispensing duct 14, and a rear side 66.
- the membrane 62 is axial symmetric to a valve axis Y, for example coinciding with the dispensing axis Z .
- the membrane 62 In the rest configuration, the membrane 62, and in particular the front side 64, has a convex shape towards the dispensing duct 14.
- the membrane 62 and in particular the front side 54, is a hemispherical shape.
- the valve 60 further comprises, according to one embodiment, a continuous annular lip 68, projecting axially from the front side 66 of the membrane 62.
- the annular lip 68 surrounds the entrance aperture 14a; for example, is placed so as to abut with the annular step 14c, preferably placing itself radially outside it.
- the valve 60 comprises a stem 70, projecting from the rear side 66 of the membrane 62, preferably along the valve axis Y.
- the stem 60 has an outer thickening which, preferably tapers towards the membrane 62, while on the opposite side it is connected to an annular draft 74.
- the stem 70 comprises a radial boss 70a towards the outside, for example annular- and continuous.
- the stem 70 is entirely axially hollow, preferably provided with a blind cavity towards the free end of the stem or towards the membrane 62.
- the membrane 62 comprises an attachment portion 78 in the outer peripheral zone, which radially defines the membrane 62 externally and is for example defined between two side surfaces orthogonal to the valve axis Y.
- the attachment portion 78 comprises an annular cuff 78a which engages with the attachment wall 17, surrounding it externally.
- the membrane is made in a relatively flexible membrane material.
- the dispensing device 1 further comprises a blocking element 80, made in a more rigid material than the flexible material of the supply valve 60, suitable for blocking the supply valve 60 to the frame 3.
- the blocking element 80 comprises a body 82, preferably comprising a plurality of angularly distanced reinforcement ribs 82a, and provided with a blocking hole 84, preferably axially through, in axis with the valve axis Y of the supply valve 60.
- the body 82 comprises a blocking projection 86, projecting radially into the hole 84, fitted with a draft surface facing towards the dispensing duct 14.
- the body 82 is suitable for snap-coupling to the supply valve 60, by means of the stem 70 snap-blockable to the projection 86.
- the blocking element 80 comprises an annular blocking wall 88, positioned peripherally externally to the body 82, having an axial extension.
- the blocking wall 88 comprises an annular recess 90, preferably fitted with a draft surface, snap-engaged to the annular boss 17a of the frame 3.
- the membrane 62 has a - lesser outer radial dimension than the inner radial dimension of the blocking wall 88, so as to prevent structural interference detrimental to the rapid assembly of the components. In other words, the membrane is radially peripherally distanced from the blocking wall 88.
- the blocking wall 80 comprises a stop collar 89, for example continuous and annular, projecting axially from the body 82, in axis with the hole 84.
- the device 1 comprises a cover 90 supported by the frame 3, to cover said frame and the inner components.
- the trigger 12 and preferably the nozzle 20 project from the cover 90.
- the aspiration valve and/or the supply valve are made by moulding, for example in one piece, for example in low density polyethylene (PELD) or in a plastic material, injected and expanded, closed cell grid, such as Ethylene-Vinyl- Acetate (EVA) or Poly-Oxy-Ethylene (POE) .
- PELD low density polyethylene
- EVA Ethylene-Vinyl- Acetate
- POE Poly-Oxy-Ethylene
- the blocking element is moulded, for example in a single piece, in a more rigid material than the membrane material, for example in polypropylene (PP) .
- PP polypropylene
- the frame 3 element is moulded, for example in a single piece, in a more rigid material than the membrane material, for example in polypropylene (PP).
- PP polypropylene
- the device During normal use of the device 1, it is mechanically connected to the container and the tube is usually connected to the aspiration duct 6, to aspirate the liquid contained in the container.
- the piston 8 moves from the initial position towards the final position pushing the liquid contained in the pumping chamber 4, fulfilling a dispensing phase of use of the device.
- the liquid acts on the aspiration valve 30, so as to make a seal against the return of the liquid from the chamber 4 towards the container .
- the liquid acts on the supply valve so as to distance the membrane 62 from the aspiration mouth 14a; in particular the liquid deforms the membrane 62 so that the annular lip 68 separates from the annular step 14c.
- the liquid insinuates itself between the membrane 62 and the crown surface 18, externally to the annular lip 68, causing the detachment of said lip from the step 14c and thereby the entrance of the pressurised liquid into the dispensing duct 14.
- the stem 70 performs a shift inside the hole 74, guided by the projection 86.
- this permits a carefully guided and calibrated deformation of the membrane, preventing anomalous deformations.
- the elastic element is elastically deformed.
- the piston At the end of dispensing the piston is in the final position and the trigger is released.
- the return means act on the trigger to bring it back again, at the same time dragging the piston from the final position towards the initial position, performing a return phase of use of the device.
- the aspiration valve 30 make it possible to aspirate liquid from the container into the pumping chamber 4.
- the membrane 62 of the dispensing valve 60 remains in contact with the step 14c or with the bevel 14d of the frame 3.
- the dispensing device according to the invention behaves in an optimal manner when dispensing, thanks to the optimal seal between the valve and the frame .
- the device is very simple to assemble and therefore makes it possible to reduce machine-time and therefore increase production
- the components are often snap connected, leading to high speed and reliable assembly.
- the piston axis and the dispensing axis are separate and incident.
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITBS2011A000013A IT1403860B1 (en) | 2011-02-16 | 2011-02-16 | TRIGGER SUPPLY DEVICE WITH DELIVERY VALVE |
IT000126A ITBS20110126A1 (en) | 2011-09-21 | 2011-09-21 | TRIGGER SUPPLY DEVICE WITH DELIVERY VALVE |
PCT/IB2011/055893 WO2012110861A1 (en) | 2011-02-16 | 2011-12-22 | Trigger dispensing device with a supply valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2648853A1 true EP2648853A1 (en) | 2013-10-16 |
EP2648853B1 EP2648853B1 (en) | 2015-09-23 |
Family
ID=45531900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11813567.2A Active EP2648853B1 (en) | 2011-02-16 | 2011-12-22 | Trigger dispensing device with a supply valve |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2648853B1 (en) |
ES (1) | ES2557133T3 (en) |
WO (1) | WO2012110861A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103619488B (en) * | 2011-04-13 | 2017-09-08 | 米德韦斯特瓦科卡尔玛公司 | improved trigger sprayer valve |
ITBS20130114A1 (en) | 2013-07-31 | 2015-02-01 | Guala Dispensing Spa | TRIGGER SUPPLY DEVICE |
CN105642470A (en) * | 2015-12-25 | 2016-06-08 | 中山市美捷时包装制品有限公司 | Gun pump capable of being used at multiple angles |
IT202200016053A1 (en) * | 2022-07-28 | 2024-01-28 | Guala Dispensing Spa | TRIGGER DISPENSING HEAD |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05104040A (en) * | 1991-05-22 | 1993-04-27 | Jun Yanagida | Sprayer |
US5467900A (en) * | 1994-03-16 | 1995-11-21 | Afa Products, Inc. | Precompression valve for trigger sprayer |
NL1011964C2 (en) * | 1998-12-10 | 2000-11-09 | Afa Polytek Bv | Precompression system for spray dispenser has precompression valve biased to closing position by spring, with space connected to pump and conduit connected to discharge nozzle |
IT1397485B1 (en) | 2010-01-15 | 2013-01-16 | Guala Dispensing Spa | DISTRIBUTION DEVICE FOR A LIQUID WITH MULTIFUNCTIONAL NOZZLE |
-
2011
- 2011-12-22 ES ES11813567.2T patent/ES2557133T3/en active Active
- 2011-12-22 EP EP11813567.2A patent/EP2648853B1/en active Active
- 2011-12-22 WO PCT/IB2011/055893 patent/WO2012110861A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012110861A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2557133T3 (en) | 2016-01-22 |
EP2648853B1 (en) | 2015-09-23 |
WO2012110861A1 (en) | 2012-08-23 |
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