EP0520315B1 - Distributeur à pompes doseuses pour produits liquides ou pateux - Google Patents

Distributeur à pompes doseuses pour produits liquides ou pateux Download PDF

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Publication number
EP0520315B1
EP0520315B1 EP92110234A EP92110234A EP0520315B1 EP 0520315 B1 EP0520315 B1 EP 0520315B1 EP 92110234 A EP92110234 A EP 92110234A EP 92110234 A EP92110234 A EP 92110234A EP 0520315 B1 EP0520315 B1 EP 0520315B1
Authority
EP
European Patent Office
Prior art keywords
metering pump
dispenser according
pump dispenser
metering
valve
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.)
Expired - Lifetime
Application number
EP92110234A
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German (de)
English (en)
Other versions
EP0520315A1 (fr
Inventor
Ernst Weag
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.)
Raimund Andris GmbH and Co KG
Original Assignee
Raimund Andris GmbH and Co KG
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 Raimund Andris GmbH and Co KG filed Critical Raimund Andris GmbH and Co KG
Publication of EP0520315A1 publication Critical patent/EP0520315A1/fr
Application granted granted Critical
Publication of EP0520315B1 publication Critical patent/EP0520315B1/fr
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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0054—Cartridges, i.e. containers specially designed for easy attachment to or easy removal from the rest of the sprayer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D3/00—Apparatus or devices for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • 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
    • B05B11/0037—Containers
    • B05B11/0038—Inner container disposed in an outer shell or outer casing
    • 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
    • B05B11/1005—Piston pumps with means for adjusting or modifying pump 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1029—Pumps having a pumping chamber with a deformable wall actuated by a lever
    • B05B11/103—Pumps having a pumping chamber with a deformable wall 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • 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
    • B05B11/1081—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping
    • B05B11/1083—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping in adjustable proportion
    • 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
    • B05B11/1081—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping
    • B05B11/1084—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping each liquid or other fluent material being pumped by a separate pump

Definitions

  • the invention relates to a metering pump dispenser for the simultaneous metered dispensing of liquid and / or pasty media from at least two separate storage chambers, which are arranged in a common pump housing and which are individually assigned separate metering pumps, each with a suction and dispensing valve, which can be operated manually by a common actuating member are, which extends on the actuating side in a common end face of the existing metering pumps and is provided with one or more output channels.
  • substances are used that consist of two or more components. These substances are characterized by the fact that they cannot be stored or can only be stored to a limited extent in the mixed state. This applies, for example, to synthetic resins which are provided with a hardener in the pourable state, so that they harden after a certain reaction time.
  • Pump dispensers of the generic type are known with which it is possible to achieve a prescribed mixing ratio of the two components even with different total amounts required.
  • These pump dispensers have two metering pumps which simultaneously operate two material components from storage containers connected to the metering pumps by actuating a common actuating member.
  • a known pump dispenser of this type (DE-A 36 14 515) consists of an essentially oval connection cap, which is provided on the underside with two connection cylinders arranged next to one another.
  • the connection cylinders essentially determine the oval outer contour of the connection cap and are each provided with an internal thread, into each of which a storage container is screwed with its bottle neck-like connection piece. The distance between the connection cylinders is so chosen that the storage container can be screwed in independently of each other.
  • the connection cap has, on the upper side opposite the connection cylinders, a circumferential oval ring web projecting axially upwards from the connection cylinders. A feed pump is inserted into the receiving cylinder from the thread side.
  • the storage containers and the metering pumps assigned to them are arranged coaxially to one another and lie in the common longitudinal center plane of the connection cap.
  • the feed pumps are each provided on the top with an outlet pipe, which each open into an output channel of the common actuating member.
  • the outlet pipes of the metering pumps are fastened in the respective outlet channel by means of a snap-in connection.
  • the shape of the actuator is adapted to the oval shape of the connection cap, and it is provided with a downward-facing outer wall which is completely immersed in the ring web of the connection cap.
  • An outlet channel leads from the outlet pipes of the feed pumps to a common outlet opening of the actuating member.
  • these two outlet channels of the actuating member open into outlet nozzles which are arranged separately from one another and whose outlet openings are arranged in close proximity to one another.
  • both feed pumps are actuated simultaneously, so that the two material components are simultaneously conveyed out of the storage containers through the respective outlet channel to the outlet opening.
  • a full pump stroke up to the bottom edge of the outer wall of the actuator on the top of the connection cap promotes each of the two metering pumps a maximum amount of material components, these amounts being in a specific and unchangeable relationship to each other, which is predetermined by the respective pump volume of the metering pumps. Since the actuating member is only plugged onto the outlet pipes of the two metering pumps and no guide elements are provided which effectively prevent the actuating member from tilting or obliquely pressing down, a uniform and simultaneous delivery stroke of the two metering pumps is only possible to a limited extent.
  • the mixing ratio of the two material components can only be changed by using dosing pumps with different maximum stroke volumes. I.e. to change the mixing ratio, it is necessary to replace at least one of the metering pumps completely with a metering pump with a different stroke volume, for which purpose the pump dispenser must be almost completely disassembled. A variable use of this known pump dispenser is therefore not possible without great effort, since several different metering pumps must always be provided for different mixing ratios and their replacement is connected with a large number of assembly steps.
  • a paste dispenser is also already known (US Pat. No. 4,438,871), which, however, does not have a bellows as the pump organ, but rather two manually operable pump pistons, which, in cooperation with suction valves, simultaneously operate two media from two concentrically nested but separate and each with a trailing piston suck the provided paste containers and convey them via separate channels into a storage space which is arranged directly in front of an outlet opening.
  • This storage space encloses a plunger-like closing element which is arranged on an elastic membrane wall acted upon by the delivery pressure of the medium.
  • the two pump pistons are arranged coaxially to one another, rigidly connected to one another and provided with a common actuating element which is actuated manually.
  • the pump pistons are provided with different diameters.
  • the likewise coaxial, cylindrical pump chambers, which are connected to the separate paste containers via suction valves, are connected to two separate guide channels via separate outlet valves, which are arranged approximately axially parallel, eccentrically to the pump chambers and open into the storage space.
  • two-component metering dispensers are already known (DE-OSes 38 37 704 and 38 43 759), which have a bellows as the pumping organ.
  • a substance component that is predominantly in terms of quantity is added to the second substance component only in small, fixed, predetermined small quantities, for example in strip form. The quantity ratio cannot be varied.
  • the bellows with a suction and an outlet valve for the main substance component and for the second substance component provides a delivery piston, which is acted upon by the main substance component and which is arranged in a cylindrical container space filled with the second substance component
  • the bellows in the other metering dispenser itself is filled with the second substance component, which it releases into the output channel via secondary channels.
  • the main fabric component is passed through a pipe duct that is significantly larger in cross-section, which coaxially projects through the bellows.
  • the quantitative relationships between the two substance components cannot be influenced in a controlled manner. Rather, the specified quantitative ratio for these two-component dispensers can only be adhered to to some extent exactly if a complete actuation stroke is carried out in each case and the two substances have at least approximately the same viscosity.
  • the invention has for its object to provide a metering pump dispenser of the generic type, which consists of as few individual parts and in which a mixing ratio of two material components can be changed with the simplest possible means, and in which the selected mixing ratio of the material components always remains constant during the entire stroke movement .
  • the bellows as pump members each have bellows which are connected on the housing side to the pump housing and on the output side to the common actuating member, that the actuating member is mounted in a lever-like manner in a head part of the pump housing projecting axially axially about a pivot bearing for performing limited pump strokes, that the pivot axis of the pivot bearing transverse to one common level of symmetry of the metering pumps is arranged, that the metering pumps have different distances and actuation levers of different sizes from the swivel axis, that the metering pumps when actuating the actuating member simultaneously and in the same direction perform differently sized pump strokes in a fixed, preselectable relationship to one another.
  • the metering pump dispenser according to the invention has the advantage that the respective pump volumes or the discharge quantities of the metering pumps are always in the same relationship to one another, both in the case of a complete pump stroke and in the case of a pump stroke which is only partially carried out.
  • the lever-like mounting of the actuating member in a pivot bearing, the bearing axis of which runs transversely to the common plane of symmetry of the metering pumps, ensures that the start of delivery of both metering pumps takes place simultaneously when the actuating member is depressed.
  • the stroke paths of the metering pumps are always in the same relationship to one another during the pumping movement during the entire pumping process, this ratio being inevitably determined by the actuating levers of different lengths.
  • the configuration according to claim 7 ensures that when the actuating member is actuated, the dispensing nozzle changes its position relative to the pump housing only to a small extent, which considerably facilitates the handling of the metering pump dispenser.
  • the embodiment of the invention according to claim 8 effectively prevents e.g. Harden hardening mixtures of material components in the dispensing nozzle and block them, since the mixing takes place only outside the dispensing nozzle.
  • the arrangement of the nozzle channels according to claim 9 enables the discharge of the various material components in the smallest space, so that losses or unintentional changes in the mixing ratio after discharge are avoided when mixing.
  • the two can be mixed if necessary Different material components can be reached before they exit the dispensing nozzle, while at the same time a precise discharge of the material components is made possible.
  • the embodiment according to claim 20 has the advantage that after the two components have been used up, the storage containers can be replaced in a simple manner and the metering pump dispenser can thus be reused.
  • the embodiments according to claims 24 and 25 advantageously achieve that the actuating member can be quickly and easily assembled and disassembled by simply snapping into the head part of the pump housing, so that a replacement of a necessary if necessary Bellows can be carried out in a simple manner to achieve a different mixing ratio.
  • the embodiment according to claim 30 enables the lever ratios to be changed several times, as a result of which the pump strokes of the metering pumps can be adjusted differently at any time in relation to one another.
  • the metering pump dispenser shown in longitudinal section in Fig. 1 consists essentially of a pump housing 2, an actuator 3, a dispensing nozzle 4 and two metering pumps 5, 6.
  • the pump housing 2 has a foot part 7, which is provided with two separate cylindrical cavities 8 and 9 which each have different diameters.
  • the actuating member 3 is mounted in a lever-like manner in a head part 10, which axially protrudes the cavities 8, 9 of the foot part 7, about a pivot bearing 11, the pivot axis 11 'of which runs transversely to a common plane of symmetry 20 of the two metering pumps 5, 6.
  • the cavities 8, 9 and the interior 12 of the head part 10 are separated from one another by a housing end wall 13.
  • a reservoir 14, 15 is inserted into each of the cavities 8, 9 to such an extent that it abuts the end face of the housing end wall 13.
  • the internal dimensions of the cavities 8, 9 are matched to the external diameter of the storage containers 14, 15 in such a way that the latter can be pushed into the respective cavities 8, 9 with a slight sliding fit.
  • the air displaced when the storage containers 14, 15 are pushed in escapes through the valves 23, 24 of the metering pumps 5, 6, so that no air cushion can form in the cavities 8, 9.
  • the cavities 8, 9 can be provided with ventilation bores or with a ventilation groove arranged in the cavity wall (not shown in the drawing). This also facilitates the disassembly of the storage containers 14, 15, since no vacuum can form in the cavities 8, 9 when the storage containers 14, 15 are pulled out.
  • the dome-like cylinder sections 25 are each provided with an internal thread, into which the respective storage container 14 or 15 can be screwed with its dispensing nozzle 30 having a matching external thread. It is also conceivable that instead of the internal thread in the cylinder sections 25, the intake pipes 29 of the intake valves 23 are each provided with an external thread, which is also used for screwing on a storage container 14, 15.
  • the screw connections between the reservoirs 14, 15 and the pump housing 2 have the advantage that the reservoirs 14, 15 can be inserted into the cavities 8, 9 with radial play and their tight and tight fit is ensured by the threaded connection, so that for the Internal dimensions of the cavities 8, 9 no special dimensional tolerance has to be provided and the storage containers 14, 15 are much easier to replace. Furthermore, no special ventilation devices have to be provided in order to reliably avoid the formation of air cushions when inserting them or the formation of a negative pressure when pulling out the storage containers 14, 15.
  • the two storage containers 14, 15 are each provided with a trailing piston 16 and 17, which limit the respective storage chamber 18 and 19 of the storage containers 14 and 15 in the axial direction downward on the foot part side.
  • the outer shape of the pump housing 2 is determined by the size and arrangement of the storage containers 14, 15. It is essentially oval in cross section (FIG. 2).
  • the storage containers 14, 15 are arranged in a common vertical plane, which is also vertical Longitudinal center plane and plane of symmetry 20 of the pump housing 2.
  • the metering pumps 5, 6 are arranged coaxially with the respective storage container 14, 15 above the housing end wall 13 in the head part 10 of the pump housing 2.
  • the metering pumps 5, 6 are essentially identical in construction and each have a bellows 21, 22 as a pumping element. Furthermore, the metering pumps 5, 6 are each provided with a suction valve 23 and with a discharge valve 24.
  • the suction valves 23 are integrated as part of the pump housing 2 in the housing end wall 13.
  • the housing end wall 13 is each provided with a dome-like cylinder section 25 arranged coaxially with the storage containers 14 and 15, each of which has an end partition 26.
  • the partition walls 26 are each provided with a valve seat 27, which has a conically tapering tube section 28 toward the respective storage container 14 or 15.
  • a cylindrical suction pipe 29 connects to each of the two pipe sections 28, onto which the respective storage container 14 or 15 with an outlet connection 30 is pushed in a sealing manner.
  • the valve seat 27 of the respective intake valve 23 is provided with three integrally molded securing claws 31, which protrude above the dividing wall 26 in the axial direction on the head part side and which have stop lugs 31 ′ directed radially inwards at their upper ends.
  • the dispensing valves 23 are each provided with an axially movable valve plate 32, which in its rest position on the respective valve seat 27 circumferential lower outer edge lies sealingly.
  • the valve plate 32 On its underside, the valve plate 32 is provided with radial guide ribs 33 projecting into the respective intake pipe 29, through which the valve plate 32 is guided in the intake pipe 29.
  • the valve plate 32 On its upper side, the valve plate 32 has a central mounting pin 34, which serves for easy handling of the valve plate 32 when it snaps between the three securing claws 31.
  • valve plate 32 In the assembled state, the valve plate 32 is mounted so that it can move axially between the valve seat 27 and the stop lugs 31 'of the securing claws 31, being guided radially on the one hand by the guide ribs 33 in the suction pipe 29 and on the other hand with its outer surface on the securing claws 31 below the stop lugs 31' .
  • the stop lugs 31 'of the securing claws 31 are at a distance from the valve seat 27, which permits a sufficient opening path of the valve plate 32 to release the suction opening in the valve seat 27, so that the suction valve 23 works reliably and without problems.
  • the dome-like cylinder sections 25 serve with their respective outer lateral surface to receive the respective bellows 21 and 22.
  • the bellows 21, 22 each have at their lower ends a cylindrical, radially elastic ring wall 46, 47 which seals the lateral surface of the respective dome-like cylinder section 25 and tightly encloses.
  • the dispensing valves 24 are each arranged in a cylindrical recess 35 and 36 in the actuator 3 as an integral part. Approximately in the lower third, the recess 35 or 36 is provided with an annular web 37, on which one is towards the bottom of the actuator 3 towards the conically tapering valve seat 38 or 39 is integrally formed.
  • the valve seats 38, 39 are each connected to connecting pieces 40 and 41, which are each tightly and tightly enclosed by an upper, radially elastic end wall collar 42, 43 of the bellows 21 and 22, respectively.
  • the dispensing valves 24 are also provided with valve disks 44, which also have radial guide ribs 45 on their underside (FIG. 8), through which they are guided into the connecting pieces 40, 41.
  • the valve plate 44 On the upper side opposite the guide ribs 45, the valve plate 44 is provided with a support cylinder 48 which is connected via spring-elastic radial webs 49 to a ring wall 50 which is larger in diameter and coaxial with the support cylinder 48.
  • the dispensing valve 24 of the metering pump 5 is arranged on the pivot bearing side in the actuating member 3 at a distance a from the pivot bearing 11.
  • the dispensing valve 24 of the metering pump 6 is at a distance from the pivot bearing from the pivot bearing 11 which corresponds approximately to four times the distance a (FIG. 2).
  • the pivot valve-side output valve 24 is offset from the other pivot valve remote from the pivot valve towards the bellows 21, so that the annular web 37 is located approximately in the lower quarter of the actuator 3.
  • the dispensing valve 24 of the metering pump 6 remote from the pivot bearing is arranged in a recess 53 of the actuating member 3 such that its annular web 37 lies axially approximately in the middle of the actuating member 3.
  • the recesses 35 and 36 for receiving the dispensing valves 24 are each closed with a valve cover 51 or 52, which from above into the respective Recess 35 or 36 is pressed tightly.
  • the end faces of the ring walls 50 rest on the respective undersides of the valve covers 51, 52, so that the valve plates 44 rest on the respective valve seat 38 and 39 with a slight contact pressure via the axially resilient radial webs 49 and their respective support cylinders 48. Since the swivel bearing-side dispensing valve 24 is arranged in the lower third of the actuating member 3, the valve cover 51 is offset from the valve plate 32 and is provided with a smaller-diameter cylinder section 54 on this side.
  • the recesses 35, 36 are each provided with a circumferential ring shoulder 55, 56 for precise axial position determination of the valve covers 51, 52.
  • the lower edge of the valve cover 52 of the discharge valve 24 remote from the pivot bearing rests on the ring shoulder 56. Due to its stepped shape, the valve cover 51 has a circumferential shoulder with which it rests on the ring shoulder 55 of the recess 35.
  • an outlet channel 57 or 58 leads from the respective recess 35 or 36 to the outlet nozzle 4.
  • the two outlet channels 57, 58 run in the plane of symmetry 20 of the pump housing 2, which coincides with the longitudinal center plane of the actuating member 3 .
  • the discharge channel 58 extends in a straight line above the swivel bearing-side dispensing valve 24 and leads through cylinder section 54 of the valve cover 51.
  • the dispensing channel 57 of the swivel bearing-side dispensing valve 24 extends at an inclination angle ⁇ (FIG. 4) of approximately 10 ° upwards to the dispensing nozzle 4.
  • the cross section of the output channels 57, 58 is the ratio of the pumping quantities of the metering pumps 5, 6 adapted that the respective pumping media flow in the output channels 57, 58 during the pumping process with the same flow rate.
  • the dispensing nozzle 4 has two nozzle channels 59 and 60, the cross-section of which is adapted to the dispensing channels 57 and 58.
  • the larger nozzle duct 60 partially encloses the smaller dispensing duct 59, as shown in FIG. 7, so that the two material components leave the dispensing nozzle 4 at approximately the same point.
  • the dispensing nozzle 4 is arranged at the same angle of inclination ⁇ as the dispensing channel of the metering pump 5 on the pivot bearing side, so that the nozzle channel 59 runs coaxially to the dispensing channel 57.
  • the actuator 3 is provided on the side opposite the pivot bearing on its lower circumferential edge with an outwardly projecting locking bar 61.
  • the head part 10 of the pump housing 2 has in the same area on its upper circumferential edge an inwardly projecting stop edge 62 against which the actuating element 3 with its latching strip 61 rests in the idle state due to the restoring force of the bellows 21, 22.
  • the pivot bearing 11 is designed in the manner of a tongue and groove engagement.
  • the rib-like or spring-like bearing element 63 which is approximately semi-cylindrical in cross section, has a straight course and is arranged on the upper inner edge of the head part 10 transversely to the plane of symmetry 20 of the pump housing 2 (FIG. 2).
  • a semi-cylindrical transverse groove 64 of the pivot bearing 11 is arranged on the corresponding lower edge of the actuating member 3 and stands with the bearing element 63 of the Head part 10 in pivotal engagement.
  • the outer contour of the actuator 3 and its locking bar 61 is matched to the substantially oval shape of the interior 12 of the head part 10 so that in the assembled state and in any pivoting position of the actuator 3, this is taken up almost without play in the head part 10.
  • the actuating member is first brought into engagement with the bearing element 63 of the head part 10 with its transverse groove 64.
  • the locking bar 61 engages behind the stop edge 62 and is thus captively but pivotably mounted in the head part 10.
  • the actuating member 3 is provided above its transverse groove 64 with an additional stop surface 65, which comes into contact with the end face 66 of the head part 10 during assembly.
  • FIGS. 4, 5 and 6 Further variants of the pivot bearing 11 are shown in FIGS. 4, 5 and 6.
  • the pivot bearing 11 shown in FIGS. 4 and 5 consists of a bearing web 67 which is arranged in the interior 12 of the head part 10 in the vertical plane of symmetry 20 and which is provided on both sides with a plurality of transverse bearing journals 68, 69, 70, 71 which are coaxial to one another in pairs is.
  • the actuating member 3 is provided on its underside in the area below the dispensing nozzle 4 with a U-shaped double web 72, the individual locking webs 73, 74 of which are arranged at a distance from one another which is matched to the width of the bearing web 67.
  • the latching webs 73, 74 are arranged symmetrically to the common plane of symmetry 20 of the pump housing 2 and the actuating member 3 and have latching depressions 75 which are open at the bottom and run in pairs coaxially to one another and arranged transversely to the longitudinal center plane 20.
  • the latching depressions 75 are arranged in a common plane 76 which runs parallel to the plane underside 77 of the actuating member 3.
  • the distances between the journals 68, 69, 70, 71 and the locking recesses 75 arranged in pairs are matched to one another and are arranged in their position relative to the actuating member 3 or the head part 10 of the pump housing 2 such that the actuating member 3 in the assembled state is almost free of play in the head part 10 is stored.
  • pairs of pins 68, 69, 70 or 71 on the bearing web 67 are removed on both sides, which are not required to achieve certain lever ratios between the pivot axis 11 'and the two metering pumps 5, 6.
  • a pair of coaxial bearing pins 69 remains on the bearing web 67 and is brought into engagement with the opposing locking recesses 75 during assembly.
  • the variant of the pivot bearing shown in FIG. 6 differs from the embodiment of FIGS. 4 and 5 in that the bearing web 78 arranged in the head part 10 of the pump housing 2 also has latching recesses 79 open at the top.
  • a bearing pin 80 is provided as an additional bearing element, which is optionally latched in one of the latching recesses 79 of the bearing web 78 of the pump housing 2 and which rotatably engages during assembly in the pair of latching recesses 75 of the latching webs 73, 74 of the actuating member 3 which are to be assigned accordingly, and thus the pivot bearing forms between the actuator 3 and the head part 10.
  • appropriately positioned transverse bores can also be arranged in the bearing web 78, through which the bearing pin 80 can be inserted.
  • This type of storage shown in FIG. 6 has the advantage that the pump dispenser 1 can be used variably for different mixing ratios of the two material components and can be easily adjusted to another desired mixing ratio at any time. In combination with the interchangeability of one of the bellows 21, 22, a wide variety of mixing ratios can thus be selected, so that the metering pump dispenser 1 according to the invention can be used to mix different material components.
  • the sizes of the storage containers 14 and 15 are adapted to the ratio of the delivery volumes of the two metering pumps 5, 6. I.e. that the storage container 14, which is connected to the metering pump 5, has a smaller storage chamber 18 than the storage container 15, which is connected to the metering pump 6.
  • the storage chambers 18, 19 are formed as an integral part of the pump housing 2, so that the assembly process for the two storage tanks 14, 15 is omitted.
  • the two trailing pistons 16, 17 are arranged directly in the two cylindrical cavities 8, 9.
  • dispensing nozzle 4 is interchangeable e.g. can be fastened to the actuating member 3 by means of a bayonet catch, which also permits variable use here by exchanging the dispensing nozzle 4.

Claims (30)

  1. Distributeur à pompes doseuses pour la distribution simultanée et dosée de produits liquides et/ou pâteux à partir de deux compartiments de réserve (18, 19) séparés, au moins, disposés dans un corps de pompe (2) commun, et aux quels sont associées des pompes doseuses (5, 6) séparées individuelles, respectivement munies d'une soupape d'amorçage et d'une soupape de distribution (23, 24), ces pompes pouvant être actionnées manuellement par un organe de commande (3) commun, qui s'étend côté commande dans une face frontale commune des pompes doseuses (5, 6) disponibles, et est muni d'un ou de plusieurs canaux de distribution (57, 58), caractérisé en ce que les pompes doseuses (5, 6) présentent respectivement des soufflets (21, 22) comme organes de pompage, raccordés côté corps au corps de pompe (2), et côté distribution à l'organe de commande (3) commun, en ce que l'organe de commande (3) est monté à la manière d'un levier dans un élément de tête (10) du corps de pompe (2), dépassant dans le sens axial des compartiments de réserve (18, 19), avec une possibilité de pivotement unilatérale autour d'un support pivotant (11) pour exécuter des courses de pompage limitées, en ce que l'axe de rotation (11') du support pivotant (11) est disposé à la transversale d'un plan de symétrie commun (20) des pompes doseuses (5, 6), en ce que les pompes doseuses (5, 6) présentent des écartements différents et des leviers de commmande de longueur différente par rapport à l'axe de rotation (11'), et en ce que les pompes doseuses (5, 6), lors de l'actionnement de l'organe de commande (3), exécutent des courses de pompage simultanées et de même sens, d'ampleur différente, qui se situent dans un rapport mutuel fixe et sélectif.
  2. Distributeur à pompes doseuses suivant la revendication 1, caractérisé en ce que les soupapes de distribution (24) des pompes doseuses (5, 6) sont respectivement disposées dans l'organe de commande (3), et sont assemblées hermétiquement avec le soufflet correspondant (21, 22).
  3. Distributeur à pompes doseuses suivant la revendication 2, caractérisé en ce que les soupapes de distribution (24) présentent respectivement un siège de soupape (38, 39), rétréci en cône en direction du soufflet (21, 22), faisant partie intégrante monobloc de l'organe de commande (3), et que prolonge une tubulure de jonction (40, 41) essentiellement cylindrique.
  4. Distributeur à pompes doseuses suivant la revendication 3, caractérisé en ce que les soupapes de distribution (24) présentent respectivement, comme organe de soupape mobile, une tête de soupape (44) munie d'ailettes de guidage (45) sur sa face frontale inférieure côté soufflet, ces ailettes étant guidées et mobiles dans le sens axial dans l'une des tubulures de jonction (40, 41).
  5. Distributeur à pompes doseuses suivant la revendication 4, caractérisé en ce que la tête de soupape (44) présente, sur sa face frontale supérieure opposée aux ailettes de guidage (45), un cylindre d'appui (48) assemblé d'une seule pièce avec une élasticité axiale, par l'intermédiaire de profils radiaux élastiques (49), avec une paroi annulaire (50) disposée dans l'axe du cylindre d'appui (48).
  6. Distributeur à pompes doseuses suivant la revendication 5, caractérisé en ce que les têtes de soupape (44) sont respectivement disposées dans une cavité (35, 36) essentiellement cylindrique, qui se situe dans l'axe de la tubulure de jonction (40, 41) du siège de soupape (38, 39), et est fermée hermétiquement par un couvercle de soupape (51, 52), calé dans l'évidement (35, 36) et sur lequel s'appuie la paroi annulaire (50) dans le sens axial.
  7. Distributeur à pompes doseuses suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que l'organe de commande (3) est muni, côté support pivotant, d'une buse de distribution (4) fixée d'une manière interchangeable.
  8. Distributeur à pompes doseuses suivant la revendication 6, caractérisé en ce que les cavités (35, 36) des soupapes de distribution (24) sont respectivement reliées à la buse de distribution (4) par un canal de distribution séparé (57, 58), et débouchent respectivement dans un canal de buse séparé (59, 60) de la buse de distribution (4).
  9. Distributeur à pompes doseuses suivant la revendication 8, caractérisé en ce que les canaux de buse présentent une section différente, le canal de buse de dimension supérieure (60) entourant le canal plus petit (61), en partie du moins.
  10. Distributeur à pompes doseuses suivant l'une quelconque des revendications 8 et 9, caractérisé en ce que les canaux de distribution (57, 58) sont disposés dans le plan de symétrie commun (20) des pompes doseuses (5, 6).
  11. Distributeur à pompes doseuses suivant l'une quelconque des revendications 1 à 10, caractérisé en ce que la soupape de distribution (24), côté support pivotant, est déportée dans le sens axial en direction du soufflet (21), par rapport à la soupape de distribution (24) distante du support pivotant (11).
  12. Distributeur à pompes doseuses suivant l'une quelconque des revendications 1 à 10, caractérisé en ce que le canal de distribution (58) de la pompe doseuse (6), distante de l'axe de rotation (11'), passe au travers du couvercle de soupape (51) de la soupape de distribution (24) côté support pivotant.
  13. Distributeur à pompes doseuses suivant l'une quelconque des revendications 8 à 10, caractérisé en ce que les deux canaux de buse débouchent dans un canal de sortie commun.
  14. Distributeur à pompes doseuses suivant l'une quelconque des revendications 1 à 12, caractérisé en ce que les soupapes d'amorçage (23) des pompes doseuses (5, 6) font respectivement partie intégrante d'une paroi frontale (13) délimitant le corps de pompe (2).
  15. Distributeur à pompes doseuses suivant la revendication 14, caractérisé en ce que la paroi frontale (13) du corps présente respectivement, pour le logement du soufflet respectif (21, 22), une section de cylindre (25) en forme de dôme, conformée d'une seule pièce et munie côté soufflet d'une cloison, dans laquelle est disposé le siège de soupape (27) de la soupape d'amorçage (23).
  16. Distributeur à pompes doseuses suivant l'une des revendications 14 et 15, caractérisé en ce que le siège de soupape (27) présente une section tubulaire (28) rétrécie en cône en direction du compartiment de réserve (18, 19), et que prolonge un conduit d'aspiration (29) cylindrique.
  17. Distributeur à pompes doseuses suivant l'une quelconque des revendications 14 à 16, caractérisé en ce que la soupape d'amorçage (23) présente, comme organe de soupape mobile, une tête de soupape (32) munie d'ailettes de guidage (33), par l'intermédiaire desquelles la tête de soupape (32) est guidée et mobile dans le sens axial dans le conduit d'aspiration (29).
  18. Distributeur à pompes doseuses suivant l'une quelconque des revendications 14 à 17, caractérisé en ce que le siège de soupape (27) est muni de trois griffes de sécurité (31), au moins, qui pénètrent dans le soufflet (21, 22) et présentent des cames de butée (31'), dirigées dans le sens radial interne, pour limiter la course d'ouverture de la tête de soupape (27).
  19. Distributeur à pompes doseuses suivant l'une quelconque des revendications 14 à 18, caractérisé en ce que la tête de soupape (32) est munie d'un tourillon de montage central (34), qui pénètre dans le soufflet (21, 22).
  20. Distributeur à pompes doseuses suivant l'une quelconque des revendications 1 à 19, caractérisé en ce que le corps de pompe (2) est muni de deux espaces creux (8, 9) cylindriques et séparés, ouverts sur le côté inférieur, pour le logement de réservoirs (14, 15) interchangeables.
  21. Distributeur à pompes doseuses suivant la revendication 20, caractérisé en ce que la profondeur des espaces creux (8, 9) est adaptée à la longueur des réservoirs (14, 15).
  22. Distributeur à pompes doseuses suivant l'une des revendications 16 et 17, caractérisé en ce que le conduit d'aspiration (29) est muni d'un filetage pour le vissage d'un réservoir (14, 15).
  23. Distributeur à pompes doseuses suivant la revendication 15, caractérisé en ce que la section de cylindre (25) en forme de dôme de la paroi frontale (13) est munie d'un taraudage pour le vissage d'un réservoir (14, 15).
  24. Distributeur à pompes doseuses suivant l'une quelconque des revendications 1 à 23, caractérisé en ce que l'élément de tête (10) du corps de pompe (2) est muni sur son bord supérieur d'un rebord de butée (62) en saillie interne.
  25. Distributeur à pompes doseuses suivant l'une quelconque des revendications 1 à 24, caractérisé en ce que l'organe de commande (3) présente une languette d'arrêt (61) sur son bord extrême côté corps.
  26. Distributeur à pompes doseuses suivant l'une quelconque des revendications 1 à 25, caractérisé en ce que le support pivotant (11) est réalisé à la manière d'un assemblage à rainure et languette (63, 64).
  27. Distributeur à pompes doseuses suivant la revendication 1, caractérisé en ce que le support pivotant se compose de tourillons (68 à 71), disposés dans l'élément de tête (10) du corps de pompe (2), et de cavités d'arrêt (75), disposées sur la face inférieure de l'organe de commande (3), et dans lesquelles s'enclenchent les tourillons (68 à 71) avec une possibilité de rotation.
  28. Distributeur à pompes doseuses suivant la revendication 27, caractérisé en ce que plusieurs tourillons détachables (68 à 71) sont disposés les uns derrière les autres et d'une seule pièce, en une rangée parallèle au rebord de butée (62) sur un profil d'appui (67) conformé sur la paroi frontale (13) du corps, ce profil se situant dans le plan de symétrie commun (20) des deux pompes doseuses (5, 6).
  29. Distributeur à pompes doseuses suivant la revendication 28, caractérisé en ce que les cavités d'arrêt (75) sont disposées côté inférieur sur l'organe de commande (3), par paires coaxiales, dans deux profils d'arrêt (73, 74) distants l'un de l'autre et parallèles au plan de symétrie (20), le nombre et les écartements de ces cavités correspondant à ceux des tourillons (68 à 71) du profil d'appui (67).
  30. Distributeur à pompes doseuses suivant la revendication 29, caractérisé en ce que le profil d'appui (78) présente des cavités d'arrêt (79) ou des trous transversaux, au lieu des tourillons (68 à 71), et en ce qu'une cavité d'arrêt (79) du profil d'appui (78) est assemblée d'une manière amovible, par une goupille d'appui (80) amovible, avec une paire de cavités d'arrêt (75) opposées des profils d'arrêt (73, 74), en formant un support pivotant pour l'organe de commande (3).
EP92110234A 1991-06-22 1992-06-17 Distributeur à pompes doseuses pour produits liquides ou pateux Expired - Lifetime EP0520315B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4120644 1991-06-22
DE4120644A DE4120644C1 (fr) 1991-06-22 1991-06-22

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EP0520315A1 EP0520315A1 (fr) 1992-12-30
EP0520315B1 true EP0520315B1 (fr) 1994-10-26

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US (1) US5224627A (fr)
EP (1) EP0520315B1 (fr)
JP (1) JP3288429B2 (fr)
KR (1) KR930000374A (fr)
DE (1) DE4120644C1 (fr)
ES (1) ES2062854T3 (fr)
TW (1) TW203588B (fr)

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DE3837704C2 (de) * 1988-11-07 1994-03-24 Andris Raimund Gmbh & Co Kg Pastenspender
FR2654016B1 (fr) * 1989-11-06 1992-02-14 Step Soc Tech Pulverisation Poussoir melangeur doseur.
ES2067197T3 (es) * 1990-04-09 1995-03-16 Lir France Sa Dispositivo de bombeo para un producto poco viscoso, en especial pastoso o fluido, y expendedor provisto de un dispositivo de este tipo.

Also Published As

Publication number Publication date
ES2062854T3 (es) 1994-12-16
TW203588B (fr) 1993-04-11
DE4120644C1 (fr) 1993-03-25
KR930000374A (ko) 1993-01-15
JPH06173846A (ja) 1994-06-21
JP3288429B2 (ja) 2002-06-04
US5224627A (en) 1993-07-06
EP0520315A1 (fr) 1992-12-30

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