EP0224907A2 - Distributeur de produits pâteux - Google Patents

Distributeur de produits pâteux Download PDF

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Publication number
EP0224907A2
EP0224907A2 EP86116720A EP86116720A EP0224907A2 EP 0224907 A2 EP0224907 A2 EP 0224907A2 EP 86116720 A EP86116720 A EP 86116720A EP 86116720 A EP86116720 A EP 86116720A EP 0224907 A2 EP0224907 A2 EP 0224907A2
Authority
EP
European Patent Office
Prior art keywords
valve
partition
pump element
pump
opening
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.)
Withdrawn
Application number
EP86116720A
Other languages
German (de)
English (en)
Inventor
Manuel Czech
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0224907A2 publication Critical patent/EP0224907A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside 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
    • B05B11/1001—Piston pumps
    • B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—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 dispenser of the type mentioned in the preambles of claims 1 and 2.
  • the first and second valves are each designed as check valves, of which the first check valve can only be opened in the direction of the pump chamber and the second check valve only in the direction of the mouth of the applicator. Both the opening and closing forces as well as the opening and closing times are applied or determined by the pressures prevailing within the container and the pump chamber.
  • the object of the invention is to design a dispenser of the type mentioned in such a way that the first and second valves can be opened and closed in a certain temporal relationship to one another.
  • the first and second valves are positively actuated as a function of the axial displacement of the pump element, as a result of which their respective opening and closing times can be set precisely and reproducibly.
  • the first valve is opened and the second valve is closed during the upward stroke of the pump element. Because the first valve is the pump chamber connects to the container, so pasty product is sucked out of the container into the pump chamber during the upward stroke of the pump element, while at the same time it is separated from the mouth of the applicator by the second valve. On the other hand, on the downward stroke of the pump element, the first valve is closed and the second valve is opened, as a result of which the pasty product previously sucked into the pump chamber is now displaced out of the pump chamber into the applicator.
  • the pump chamber is divided into two chambers which can be connected to one another via the second valve.
  • One of these chambers is permanently connected to the mouth of the applicator.
  • the other of these chambers can be connected to the container via the first valve.
  • the first and second valves are positively controlled in such a way that the first valve is opened and the second valve is closed during the downward stroke of the pump element. Since the second valve is closed and preferably a piston surface connected to the pump element separates the two chambers of the pump chambers from one another, the volume of the one chamber connected to the mouth of the applicator is reduced, while the volume of the chamber connectable to the container is increased. Pasty product contained in one chamber is therefore displaced into the applicator.
  • the first valve which connects the other chamber to the container, is opened at the same time, this pasty product is used to draw in from the container into the other chamber.
  • the second valve is open and the first valve is closed. The connection between the two chambers of the pump chamber thus established via the opened second valve, while simultaneously reducing the volume of the other chamber and increasing the volume of one chamber, the product previously sucked into the other chamber which delivered a chamber.
  • the first and second valves preferably have a common rotary slide valve which, when it rotates, opens one valve and simultaneously closes the other valve.
  • the rotary slide valve is preferably connected in a drive-transmitting manner via a steep thread to an actuating element which is acted upon from the outside in order to dispense product via the applicator. With the help of such a steep thread, an axial movement of the actuating member can be easily converted into a rotary movement of the rotary valve.
  • This actuator also acts on the pump element, but these are operatively coupled to one another in such a way that with a first specific stroke of the actuator there is only a rotation of the rotary valve and only then an axial displacement of the pump element. This ensures that before the displacement or suction of product from or into the pump chamber, the rotation of the rotary valve causes the respective opening and closing of the first and second valves in order to release or block the respectively desired flow paths for the product. In this way, depending on the respective stroke paths of the actuating element and the pump element, opening and closing of the first and second valves at precisely reproducible opening and closing times is possible without the respective pressure conditions within the pump chamber, the container and also the environment of the Donors play a role.
  • the dispenser shown in Fig. 1 comprises a container 1 containing a pasty product, which is closed at its end not shown here with a piston 2 sealingly sliding on the inner wall of the container.
  • the piston 2 In the left half of the dispenser shown in FIG. 1, the piston 2 is in its highest position, in which the container is essentially emptied.
  • the container At its upper end, the container is closed with a partition 4, which has at least one opening 5.
  • a head piece 3 is placed, for example by screwing, which comprises an applicator 9 with which the product to be dispensed can be delivered to a specific object in a targeted manner.
  • the head 3 comprises concentric guide sleeves 32 and 33 which are arranged essentially concentrically to the central longitudinal axis of the container 1 and thus also that of the head piece 3.
  • an actuator 31 can be immersed by axial displacement downward when it is acted upon or pressed from the outside.
  • a return spring 8 is arranged, which tries to move the actuator 31 to its upper end position.
  • the return spring 8 comprises a downward-pointing central tube part 34 of the actuator 31.
  • the interior of this tube part 34 receives the upper end of a pump element 15, which extends downwards in a tubular and concentric manner to the central longitudinal axis of the container 1 and at its lower area with a is provided radially outwardly extending piston part.
  • the outer peripheral part of the piston part of the pump element 15 sealingly engages the inner lateral surface of a substantially vertical lateral surface 17, which is formed here by an upper section of the container 1 and protruding into the head piece 3.
  • This lateral surface 17 delimits an essentially cylindrical pump chamber 16 in the circumferential direction, within which the piston part of the pump element 15 can be displaced.
  • Fig. 1 the pump element 15 and the actuator 31 are shown on the left side in their respective lower position and on the right side in their respective upper position.
  • a rotary slide valve 22 is arranged above the partition 4 in the lower region of the pump chamber 16 the top view is shown.
  • This rotary valve 22 comprises a hub part 35, which is connected in a rotationally fixed manner to the pump element 15 via a tongue and groove arrangement, the hub part engaging from below into the interior of the tubular part of the pump element 15.
  • the rotary slide valve has a circular-horizontal part 28 which is provided with at least one opening extending in a horizontal plane, but preferably a plurality of openings, as is shown in FIG. 2. These openings cooperate with the at least one opening 5 of the partition 4 to form a first valve 20.
  • the rotary valve 22 also comprises a vertical part 29, which extends from the horizontal part on its circumference and which cooperates with an opening 18 provided in the lateral surface 17 of the pump chamber 16.
  • This vertical part is interrupted or has at least one further opening in order to form a second valve 21 with the opening 18.
  • the opening 18 opens into a dispensing part 38, which is also formed by the upper section of the container 1 and opens into the applicator 9.
  • the upper end of the tubular part of the pump element 15 and also the downwardly projecting tubular part 34 of the actuator 31 are provided with intermeshing coarse threads 30.
  • the steep thread 30 is preferably provided between the inner circumferential surface of the upper tubular end of the pump element 15 and the outer circumferential surface of a core piece 36 formed within the tubular part 34 of the actuating member 31. This steep thread causes the pump element 15 to rotate about its axis of rotation when the actuator 31 is moved downward.
  • the actuating member 31 introduces a downward movement by a first stroke path a relative movement with respect to the pump element 15 until the upper end of the pump element 15 strikes the lower end face of the actuating member 31.
  • the pump element 15 only rotates about its axis of rotation, but there is still no axial displacement of the pump element. Since, as already stated above, the hub part 35 of the rotary valve 22 is connected in a rotationally fixed manner to the pump element 15, the rotation of the pump element 15 will also lead to a rotation of the rotary valve 22.
  • the actuating element 31 hits the upper end of the pump element 15 with its lower end face during the further downward movement, the latter is likewise moved downward during the further movement of the actuating element 31, as is shown with the left half of the one shown in FIG. 1 Arrangement can be seen.
  • the steep thread 30 between the core part 36 of the actuator 31 and the inner wall of the upper end of the tubular part of the pump element 15 is designed so that the rotational movement of the pump element 15 and thus also that of the rotary valve 22 is at the latest when an axial displacement of the pump element 15 begins.
  • the dispenser is not in use, its head piece 3 and in particular the mouth of its applicator 9 and the actuator 31 are covered with a cap 6 enclosing these parts.
  • the cap 6 is removed. Thereafter, the actuating member 31 is pressed down, whereby rotation of the pump element 15 alone during the travel of the first stroke path until the lower end face of the actuating member 31 strikes the upper end of the pump element 15 and thus also a rotation of the rotary valve 22 takes place.
  • the first valve 20 is closed and the second valve 21 is opened by rotating an area of the horizontal part 28 of the rotary slide valve valve 22 which is not provided with an opening over the at least one opening 5 of the partition wall 4 in order to cover it, ie to close.
  • the first valve 20 is therefore closed.
  • a recess or opening in the vertical part 29 of the rotary slide valve 22 is rotated in front of the opening 18 of the substantially vertical lateral surface 17 of the pump chamber 16, as a result of which a passage is made between the pump chamber 16 and the dispensing part 36.
  • the second valve 21 is then open.
  • the pump element 15 is then taken downward, as a result of which the volume of the pump chamber 16, which was previously filled with the product to be dispensed, is reduced.
  • the product located in the pump chamber is passed through the opening 18, ie through the opened second valve 21, to the dispensing part 38 and thus to the applicator 9. Since the first valve 20 is closed at the same time, product displaced from the pump chamber 16 cannot get back into the container 1.
  • FIG. 3 schematically shows a modified embodiment of the pump element 15, which here is designed in two parts, namely a piston part 15 'and a tubular part 15 ". Both parts can be rotated relative to one another. When the tubular part 15" rotates, it rotates of the rotary valve 22, the piston part 15 'will therefore essentially stand still, since its sealing circumferential surface rests firmly on the inner surface of the pump chamber 16. The piston part 15 'therefore offers almost no resistance to the rotation of the tubular part 15 ".
  • the embodiment of the dispenser shown in FIG. 1 differs from the previously described embodiment by a modified embodiment of the rotary valve 22 and another coupling between the rotary valve 22 and the actuator 31 for the purpose of converting an axial movement of the actuator 31 into a rotary movement of the rotary valve 22 .
  • the rotary slide valve 22 is provided with a substantially vertical part 29, in which cutouts are provided, each for forming the first valve 20 with an opening 27, which is provided in the vertical lateral surface 17 of the pump chamber 16, and with the at least one opening 5 the partition 4 cooperates and work together to form the second valve 21 with the first opening 18 provided in the vertical lateral surface of the pump chamber 16.
  • the rotary slide valve 22 can be moved in the axial direction together with the pump element 15. This can be clearly seen from a comparison of the left and right halves of the arrangement shown in FIG. 4.
  • the pump element 15 is preferably rotatable relative to the rotary valve 22.
  • a cylindrical pin 36 ′ is fixed in a rotationally fixed manner within a tube part 34 that points downward from the lower end face of the actuating member 31 and has a steep thread 30 on its lateral surface on its lower part. This steep thread 30 in turn interacts with a corresponding steep thread on the inner circumferential surface of a tubular upper part of the rotary valve 22 in order to convert an axial movement of the actuating member 31 into a rotary movement of the rotary valve 22.
  • the pump element 15 and also the rotary valve 22 can be seen, again takes place with a first stroke of the actuator 31 from both the upper and the lower limit position, a relative movement between the actuator 31 and Pump element 15 or rotary slide valve 22, as a result of which the rotary movement of the rotary slide valve 22 is effected in order to open the first valve 20 and to close or close the second valve 21 before the start of a movement of the pump element 15, ie a pump stroke, with the aid of the rotating rotary slide valve. in the opposite manner to close the first valve 20 and to open the second valve 21.
  • the third embodiment of the dispenser shown in FIGS. 6 and 7 differs from the first two embodiments not only in a different design of the rotary valve, but also essentially in a modification of the pump chamber 16.
  • the pump chamber 16 consists of an upper chamber 16a in FIG. 6 and a lower chamber 16b.
  • the two chambers 16a and 16b are separated from the pump element 15, which is axially displaceable in the pump chamber 16, and in particular from its essentially horizontal surface 23.
  • the rotary slide valve 22 can in turn be moved together with the pump element 15 in the axial direction.
  • the rotation of the rotary slide valve 22 is effected in a manner comparable with the other exemplary embodiments with the aid of a steep thread 30, which axially displaces the actuating member 31 during a certain limited stroke path
  • Rotary movement of the rotary valve 22 is formed, the rotary valve 22 being connected in a rotationally fixed manner to a pin 37 which has on its outer lateral surface a corresponding steep thread which is in engagement with the steep thread 30 of the core part 36.
  • the essentially vertical lateral surface 19 of the pump element 15 here delimits a hollow cylinder 25 which is open at the bottom and opens into the container 1 through the at least one opening 5 of the partition 4.
  • the rotary slide 22 is first rotated in order to open the first valve 20 and to close the second valve 21 when the actuating member 31 moves downward and the pump element 15 then moves downward. This is done by covering the respectively provided openings 24 and 26, which are each formed in the horizontal and vertical surfaces 23 and 19 of the pump element 15.
  • the volume of the first chamber 16a is increased and at the same time the volume of the second chamber 16b is reduced.
  • product contained in the second chamber 16b is displaced to the dispensing part 38 and thus to the applicator 9, i.e. spent.
  • product is sucked into the first chamber 16a from the container 1 via the hollow cylinder 25 via the opened first valve 20.
  • this product as already described above, contained in the second chamber 16b is then displaced from the second chamber 16b with the second valve 21 then closed and thus delivered to the applicator 9.
  • the cap 6 can cooperate with the actuator 31 such that when the cap 6 is placed on the dispenser, that is to say in its idle state, the first stroke of the actuator 31, in which only a rotary movement of the rotary slide, however, no axial movement of the pump element 15 is yet to take place, about half of which is covered, as a result of which the first and second valves 20 and 21 are in a half-open or half-closed position when the rotary slide valve 22 is rotated accordingly. If the container 1 is filled with the product to be dispensed in this position, this product can be pushed through the respectively half-opened or half-closed first and second valves until just before the mouth of the applicator 9 or the dispensing part 38. The dispenser is therefore already fully operational when the actuating member 31 is depressed for the first time, ie it immediately gives a certain amount of the pro to be dispensed ducts.
  • valves to be opened and closed with the aid of the rotary slide valve can have relatively large passage cross sections, so that even highly viscous products can be conveyed and released without major frictional losses, and the radii of curvature of the respective flow paths for the product can also be made relatively large.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Reciprocating Pumps (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP86116720A 1985-12-04 1986-12-02 Distributeur de produits pâteux Withdrawn EP0224907A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853542924 DE3542924A1 (de) 1985-12-04 1985-12-04 Spender fuer pastoese produkte
DE3542924 1985-12-04

Publications (1)

Publication Number Publication Date
EP0224907A2 true EP0224907A2 (fr) 1987-06-10

Family

ID=6287645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116720A Withdrawn EP0224907A2 (fr) 1985-12-04 1986-12-02 Distributeur de produits pâteux

Country Status (5)

Country Link
EP (1) EP0224907A2 (fr)
JP (1) JPS62142871A (fr)
AU (1) AU6580086A (fr)
DE (1) DE3542924A1 (fr)
FI (1) FI864945A7 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4804115A (en) * 1987-04-29 1989-02-14 Metal Box P.L.C. Pump chamber dispenser
US4821926A (en) * 1987-04-10 1989-04-18 Guala S.P.A. Dispenser of paste-like products, in particular toothpaste
DE102008052589A1 (de) * 2008-10-21 2010-04-22 Behr Gmbh & Co. Kg Pumpvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821926A (en) * 1987-04-10 1989-04-18 Guala S.P.A. Dispenser of paste-like products, in particular toothpaste
US4804115A (en) * 1987-04-29 1989-02-14 Metal Box P.L.C. Pump chamber dispenser
DE102008052589A1 (de) * 2008-10-21 2010-04-22 Behr Gmbh & Co. Kg Pumpvorrichtung

Also Published As

Publication number Publication date
FI864945L (fi) 1987-06-05
FI864945A7 (fi) 1987-06-05
FI864945A0 (fi) 1986-12-03
AU6580086A (en) 1987-06-11
JPS62142871A (ja) 1987-06-26
DE3542924A1 (de) 1987-06-11

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