WO2000060318A1 - Dosing device for dispensing metered doses of liquid media - Google Patents
Dosing device for dispensing metered doses of liquid mediaInfo
- Publication number
- WO2000060318A1 WO2000060318A1 PCT/EP2000/002652 EP0002652W WO0060318A1 WO 2000060318 A1 WO2000060318 A1 WO 2000060318A1 EP 0002652 W EP0002652 W EP 0002652W WO 0060318 A1 WO0060318 A1 WO 0060318A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insert
- pump piston
- liquid
- container
- riser pipe
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/28—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement
- G01F11/286—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with stationary measuring chambers having constant volume during measurement where filling of the measuring chamber is effected by squeezing a supply container that is in fluid connection with the measuring chamber and excess fluid is sucked back from the measuring chamber during relaxation of the supply container
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
- G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
- G01F11/025—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with manually operated pistons
- G01F11/028—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type with manually operated pistons the dosing device being provided with a dip tube and fitted to a container, e.g. to a bottleneck
Definitions
- Dispenser for dispensing liquid media
- the invention relates to a metering device for dispensing liquid media from a container, which has a closure cap which overlaps the container neck and a cup-shaped insert associated therewith and is in tensile connection to a pump piston filling the cup-shaped insert with liquid, one towards the inside of the container leading riser pipe for use is provided.
- the riser tube is designed as a capillary tube in order to prevent the liquid that has been sucked up from flowing back into the container immediately. This slows down actuation and poses a risk of damage to the pump parts if the cap is removed faster than the liquid can flow through the capillary tube. The liquid can hardly be pushed back into the container at all. Precise dosing is ruled out because the capillary force cannot completely neutralize the resulting negative pressure in the container.
- a metering device of this type is known from DE-GM 94 11 522.
- the pump piston In the basic position, the pump piston is located directly above the mouth of the riser pipe that closes with the bottom of the insert.
- the solution provides a valve at the top of the riser. This is complex and prone to failure. Once there, an insert that has been filled can only be emptied by tipping it over and not by pushing it back into the container.
- EP 0 484 528 proposes that the riser pipe go beyond the bottom of the insert to let.
- the free - standing tube stem that ends in the dosing chamber ends with a baffle.
- Cross slots are left below the baffle.
- the excess portion of the liquid introduced into the metering chamber by squeezing the container runs back through these transverse slots, which act as filling limiters.
- the splashing that occurs on the baffle is generally perceived as annoying.
- the object of the invention is to design a generic metering device in a simpler and more advantageous manner.
- the pump piston has a hollow piston shaft, in which the end of the riser pipe projecting above the bottom of the insert runs such that between the lateral surface of the Riser tube and inner wall of the piston skirt, a flow cross-section remains for the outflow of the liquid which has emerged from the riser pipe mouth in the direction of the bottom of the insert.
- a residual air intermediate cushion, which is generated by the closing movement in the riser pipe, is beneficial.
- the liquid coming in through the mouth of the riser pipe is "deposited" on the bottom of the insert without splashing over the return path provided.
- the hollow shaft the pump piston itself represents a kind of splash guard.
- the outer wall of the cylindrical insert leaves a ventilation cross section and leaves a transverse ventilation opening in the upper region, which is closed in the closed position of the closure cap.
- the outer wall of the insert advantageously has a widening in the upper end region for the sealing entry of the collar. The latter also provides a favorable finding funnel for the pump piston when reassigning the closure cap.
- an advantageous embodiment is achieved by latching between the closure cap and the pump piston.
- the invention proposes that a hollow spigot entering the interior of the pump piston skirt extends from the interior of the sealing cap cover and engages on the inner surface of the pump piston skirt.
- the hollow pin has the advantage of saving material and, moreover, of increasing the locking elasticity.
- the annoying shrink marks on the outside of the cover of the screw cap also do not occur.
- the pump piston forms an annular groove between two piston ring lips. This has a sealing effect and increases the dosing accuracy.
- riser pipe is plug-and-socket-fitted by a sleeve on the bottom of the insert.
- a frictional assignment is sufficient here.
- FIG. 1 shows a vertical section through the metering device according to the invention, enlarged and in the closed position
- Fig. 2 shows the dosing device in the same representation after completed dosing.
- the dosing device D shown serves for the dosed delivery of a liquid medium from a container 1.
- the liquid has the reference symbol 2.
- the container 1 is rigid. It can be implemented as a glass bottle and merges into a narrowed container neck 3.
- a substantially cylindrical opening 7 of the container 1 receives a cup-shaped insert 8. It also protrudes somewhat beyond the opening 7 into the container interior 9.
- the cup-shaped insert 8 has a support flange 10 which projects beyond the maximum cross section of the insert 8. This occurs against a corresponding ring end face 11 of the container neck 3. At the same time, it acts as a ring seal with respect to the inside of a cover 12 of the screw cap 6.
- the cup-shaped insert 8 forms the pump cylinder 13 of a pump device P of the dosing device D.
- the inside of the pump cylinder 13 provides a cup for pouring out the dosing quantity introduced therein, reproducibly divided from the remaining quantity of liquid 2.
- a riser pipe 14 serves as a lifting path in this regard. It extends, penetrating a bottom 15 of the pot-shaped insert 8, into the interior of the container 9. It extends with its lower, free end to a bottom 16 of the container 1.
- a pump piston 17 has a suction effect. It can be axially displaced via screw cap 6. A shaft 18 of the pump piston 17 engages in the center of the screw cap 6. It is connected to it with tensile strength. It can be an integral assignment.
- the longitudinal center axis of the essentially rotationally symmetrical meter D is designated x-x. It coincides with the longitudinal axis of the piston skirt 18 as well as that of the riser pipe 14 which extends into the interior of the insert 8.
- the end of the riser pipe 14 projecting beyond the bottom 15 of the insert 8 is designated 14 '. It is free and is open at the top.
- the floor-side passage area is lengthened for stable restraint of the riser pipe 14 on the insert 8.
- a sleeve 19 formed underneath the base 15 serves for this purpose. It takes up the riser pipe cross section in a plug-in manner. Such a friction-fit plug-in holder has been found to be sufficient. It is also tight in relation to the vacuum situation in the pump cylinder 13, which is still to be explained.
- the piston shaft 18 of the pump piston 17 is designed to be hollow.
- the cavity in the area of the pump device P is chosen to be large enough that a clear flow cross section 20 remains between a lateral surface a of the riser pipe 14 and the corresponding inner wall b of the piston skirt 18. This serves for the outflow of the liquid 2, which has moved from the riser pipe mouth 21 under piston displacement, in the direction of the bottom 15 of the insert 8.
- a sufficient flow-free zone 22 is also left in front of the riser pipe mouth 21 as a connection to the flow cross section 20.
- the flow cross section 20 widens to form a kind of funnel 24. This acts in a plug-centering manner with respect to the riser mouth 21.
- a hollow pin 25 is used, which is rooted in the cover cap cover 12. It is designed for locking between the closure cap 6 and the end of the pump piston 17 there, more precisely the piston shaft 18. Locking projections 26 of the hollow pin 25 on the casing wall adhere to counter-recesses on the inner surface or inner wall b of the piston skirt 18. Its material is sufficiently flexible so that these depressions can also press themselves.
- annular collar 27 Likewise rooted in the ceiling 12, projecting into the interior of the closure cap 6, is an annular collar 27.
- the collar extends concentrically to the central hollow pin 25 and also concentrically to the wall of the pump cylinder 13 of the pump device P.
- the collar 27 acts as a closure member of an air balancing device LA. It comes into effect when the screw cap 6 is closed. It then closes a radial ventilation opening 28. It is arranged in the upper area, namely close to the ring face 11 of the insert 8.
- the ventilation opening 28 oriented transversely in this area connects to a long channel section 29 in the outer wall 8 ′ of the cylindrical insert 8.
- the long channel section 29 continues into a ventilation cross section 30 in the form of an annular gap on the container side. The latter connects to the interior of the container 9.
- the annular gap-like ventilation cross section 30 arises from the fact that the insert 8 springs back from the exit of the longitudinal channel 29 with respect to the corresponding wall of the opening 7 of the container neck 3.
- the section of the insert 8 located above there is a stopper-like arrangement of the part of the insert 8 which is larger in outside diameter.
- the transition is realized as a rotationally symmetrical inclined wall jump.
- the corresponding frustoconical transition zone can be clearly seen from the drawing.
- the taper faces the container interior 9.
- the offset mentioned leads to the outer wall 8 ′ of the insert 8 forming a widening 31 in the upper end region.
- the collar 27 of the screw cap 6 enters in a plug-like and sealing manner.
- the piston lips 17 'and 17'' are designated 17 'and 17''.
- the former is located in the end face 23 of the pump piston 17 facing the bottom 15.
- the face through the piston lips 17 ', 17'' The resulting annular groove of the pump piston 17 bears the reference number 32.
- the piston lips 17 ', 17'' are designed to be free-standing according to clearances made on the piston skirt side.
- the function is as follows: by unscrewing the screw cap 6, the pump piston 17 connected therewith in a tension-resistant manner is displaced in the upward direction of the metering device D. A negative pressure occurs in front of the end face 23 of the pump piston.
- the liquid 2 rises coming from the supply.
- the liquid flow swells out through the riser pipe mouth 21, enters the flow cross section 20 in the opposite direction, and is introduced into the cup-forming pump chamber 33 in front of the end face 23 of the increasingly rising pump piston 17, where the level rises continuously.
- the flow path is indicated by line y.
- the liquid can largely be returned to the container by screwing on the cap.
- the filling vacuum acts as soon as the lower piston lip 17 'loses its guidance on the inner wall of the pump cylinder 13. This is the case when the pump piston 18 comes into the situation shown in FIG. 2, that is to say in the expansion 31 of the insert.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Closures For Containers (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU41106/00A AU4110600A (en) | 1999-03-30 | 2000-03-25 | Dosing device for dispensing metered doses of liquid media |
EP00920580A EP1166052A1 (en) | 1999-03-30 | 2000-03-25 | Dosing device for dispensing metered doses of liquid media |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29905620U DE29905620U1 (en) | 1999-03-30 | 1999-03-30 | Dispenser for dispensing liquid media |
DE29905620.1 | 1999-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000060318A1 true WO2000060318A1 (en) | 2000-10-12 |
Family
ID=8071476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/002652 WO2000060318A1 (en) | 1999-03-30 | 2000-03-25 | Dosing device for dispensing metered doses of liquid media |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1166052A1 (en) |
AU (1) | AU4110600A (en) |
DE (1) | DE29905620U1 (en) |
WO (1) | WO2000060318A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10875688B1 (en) | 2019-11-25 | 2020-12-29 | Berlin Packaging, Llc | Child resistant senior friendly bottle packaging for liquids |
US11161657B2 (en) | 2019-11-25 | 2021-11-02 | Berlin Packaging, Llc | Child resistant senior friendly bottle packaging for liquids |
USD1012725S1 (en) | 2020-10-07 | 2024-01-30 | Berlin Packaging, Llc | Dosing container |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4717996B2 (en) * | 2000-10-11 | 2011-07-06 | サーパス工業株式会社 | Container and plug used therefor |
DE102017105536A1 (en) | 2017-03-15 | 2018-09-20 | Samir Adanalic | Dosing device and liquid container |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4272228A (en) * | 1979-04-11 | 1981-06-09 | Security Plastics, Inc. | High volume dispensing pump |
FR2542820A1 (en) * | 1983-03-19 | 1984-09-21 | Jordan Gmbh & Co Kg Geb | DISPENSING PUMP DOSED WITH LIQUIDS |
FR2699390A1 (en) * | 1992-12-23 | 1994-06-24 | Sodex Hexotol Sa | Distributor for gels or low viscosity products |
WO1994018526A1 (en) * | 1993-02-13 | 1994-08-18 | Alfred Von Schuckmann | Liquid portioning device |
-
1999
- 1999-03-30 DE DE29905620U patent/DE29905620U1/en not_active Expired - Lifetime
-
2000
- 2000-03-25 AU AU41106/00A patent/AU4110600A/en not_active Abandoned
- 2000-03-25 EP EP00920580A patent/EP1166052A1/en not_active Withdrawn
- 2000-03-25 WO PCT/EP2000/002652 patent/WO2000060318A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4272228A (en) * | 1979-04-11 | 1981-06-09 | Security Plastics, Inc. | High volume dispensing pump |
FR2542820A1 (en) * | 1983-03-19 | 1984-09-21 | Jordan Gmbh & Co Kg Geb | DISPENSING PUMP DOSED WITH LIQUIDS |
FR2699390A1 (en) * | 1992-12-23 | 1994-06-24 | Sodex Hexotol Sa | Distributor for gels or low viscosity products |
WO1994018526A1 (en) * | 1993-02-13 | 1994-08-18 | Alfred Von Schuckmann | Liquid portioning device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10875688B1 (en) | 2019-11-25 | 2020-12-29 | Berlin Packaging, Llc | Child resistant senior friendly bottle packaging for liquids |
US11161657B2 (en) | 2019-11-25 | 2021-11-02 | Berlin Packaging, Llc | Child resistant senior friendly bottle packaging for liquids |
USD1012725S1 (en) | 2020-10-07 | 2024-01-30 | Berlin Packaging, Llc | Dosing container |
Also Published As
Publication number | Publication date |
---|---|
AU4110600A (en) | 2000-10-23 |
EP1166052A1 (en) | 2002-01-02 |
DE29905620U1 (en) | 2000-08-10 |
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