Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1028—Pumps having a pumping chamber with a deformable wall
  • B05B11/1032—Pumps having a pumping chamber with a deformable wall 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
  • B05B11/1064—Pump inlet and outlet valve elements integrally formed of a deformable material

Definitions

• the invention relates to a dispenser pump for the drop-free metered dispensing of liquid to pasty products from containers such as bottles, canisters or tubes, consisting of a pump lower part provided with a suction opening for attachment to the container opening, the suction opening coming into contact with the product via, for example, a hose is brought, and from a pump upper part with a movable hood for sucking the product through the suction opening of the pump lower part into a suction chamber and for dispensing the product via a dispensing channel with an application opening from this suction chamber.
• a paste dispenser with a hollow cylindrical dispenser housing which is open to the atmosphere at its lower end and closed by a plunger and which contains an axially displaceable pump piston with a tubular piston rod at its upper end.
• the upper pump piston and the lower advancement piston define a paste chamber formed between them.
• a downward external pressure on the upper pump piston pushes paste from the paste chamber through the hollow piston rod to the application opening.
• the vacuum in the paste chamber pulls the advancing piston upwards. This process can be repeated until the paste chamber is empty and the advancing piston is in contact with the pump piston.
• a dispenser for pasty products is known with a metering pump for dispensing metered quantities from bottle- or can-like paste containers with a bellows made of rubber-like elastic plastic, which is connected between two housing parts made of dimensionally stable plastic, which is arranged axially Interlock telescopically.
• the housing parts are axially movable relative to one another between two stroke limits and are configured with return springs.
• To dispense the paste external pressure is applied to the housing parts, causing the paste inside the bellows to be pressed through the housing parts to the application opening. After the external pressure has ended, the housing parts are reset by the spring force of the bellows.
• a valve that is now open at the lower opening of the bellows causes the bellows to be refilled by the resetting, while at the same time, further paste is pulled upwards by a piston.
• dispensers are known with a dispenser pump arranged in the dispenser head, the pump chamber of which is delimited on the inlet and outlet sides by check valves. Within this closed pump chamber there is an axially displaceable pressure piston which can be displaced downwards by an external pressure and which is returned to its starting position by return springs arranged in the pump chamber after the external pressure has been removed.
• dispensers Common to the above-mentioned dispensers is a dispenser pump arranged in the dispenser head, the actuation of which, by means of an applied external dispensing pressure, pushes the product to be dispensed through an application opening via a pump chamber.
• the invention has for its object to improve a dispenser pump of the type mentioned in such a way that with a relatively simple structure and little assembly effort, a precise and reliable portioned dispensing of the product enables easy handling.
• the lower end of the suction chamber is formed by a “floating” elastic valve disk, which alternately, when a pressure change caused by the movable hood, arises in the middle of the suction chamber by warping its central part the lower opening of the dispensing channel part opens and closes and, at the same time, reversely closes and opens the suction opening of the pump lower part by deforming its outer edge area.
• the elastic valve disc acting with this double function is made of a thermoplastic elastomer or rubber and can be designed according to the invention with bellows-like waves in its outer region.
• the lower part of the dispensing channel is led down to the valve disk with its lower opening so that its lower opening is closed from below by the central part of the valve disk in the starting position of the dispenser pump.
• the larger suction opening of the lower part of the pump is closed from above by the outer edge region of the valve disk in the starting position.
• the internal pressure in the suction chamber increases as a result of an external pressure on the hood and consequent axial displacement of the hood in the direction of the valve disk and the associated reduction in the suction chamber volume.
• the middle part of the valve disc is deformed by this overpressure and opens the lower opening of the dispensing channel.
• valve disk The outer edge area of the valve disk is simultaneously pressed firmly by the overpressure onto the appropriately designed suction opening of the lower part of the pump, so that this remains closed.
• the product to be dispensed is pressed out of the suction chamber and conveyed through the dispensing channel and its partially angled upper dispensing channel part with an application opening, which is led out laterally from the pump upper part.
• the hood is made of an elastic material, for example of a thermoplastic elastomer, so that it is axially deformable. It is sealed above the upper angled dispensing channel part on an upper edge of the pump upper part.
• the entire dispensing channel is designed here as a dispensing tube molded into the upper part of the pump, and the upper part of the pump is connected to the lower part of the pump.
• the pressure in the suction chamber arranged below the hood is increased as described above and the dispensing process takes place as described.
• a stop arranged above the angled dispensing channel part on the upper inside of the hood limits the axial displacement of the hood to the angled dispensing channel part out. The hood is then reset after the dispensing process has been carried out exclusively by the existing elastic restoring forces of the hood, the suction chamber being filled with product again.
• an axially displaceable protective cap is attached to the upper part of the pump in such a way that the external pressure on the hood is now indirectly caused by pressure on this protective cap.
• the hood connects the upper part of the pump via a hinge to a hinged cover, which protects the hood when the dispenser pump is not in use.
• the pump upper part is axially displaceable relative to the pump lower part, so that the upper dispensing channel part and the hood, which are both parts of the pump upper part, are also axially displaceable.
• the lower part of the dispensing channel is fixed to the lower part of the pump.
• the suction chamber is designed like a piston pump with an annular space and an annular piston, the annular space enveloping the lower part of the dispensing channel in an annular manner and thereby being fixed in place with the lower part of the pump.
• the annular piston of this piston-shaped suction chamber surrounds the upper part of the dispensing channel in a stationary manner and is therefore axially displaceable with it and with the hood.
• the entire upper part of the pump with the ring piston moves in the direction of the valve disc due to external pressure on the hood; the pressure inside the suction chamber increases and the dispensing process proceeds as described above. Since the hood itself is no longer made of an elastic material that is deformed by the external pressure, but is part of the rigid upper part of the pump, the upper part of the pump must be returned after the dispensing process has ended within the upper part of the pump. partly a return spring is arranged, which is supported on the lower part of the pump. The return spring can be arranged inside the dispensing channel or outside the dispensing channel and the suction chamber.
• 1 is a dispenser pump in a vertical section
• FIG. 2 shows a second dispenser pump in a vertical section on a bottle
• FIG. 3 shows the dispenser pump of FIG. 2 in a partially cut perspective view
• FIG. 4 is a third perspective view of a third dispenser pump
• FIG. 5 shows the dispenser pump of FIG. 4 in a vertical section
• FIG. 6 shows a fourth dispenser pump in a partially cut perspective view
• FIG. 7 is a vertical section of the dispenser pump of FIG. 6,
• Fig. 8-10 the dispenser pump of Fig. 7 in different views.
• a dispenser pump 1 shows a vertical section of a dispenser pump 1 according to the invention, which consists of an upper pump part 8 and a lower pump part 6.
• the lower pump part 6 is pressed into the container opening 5 of a bottle 26 (only the bottle neck is shown), while the upper pump part 8 is screwed onto the outside of the bottle neck.
• the suction opening 4 of the lower pump part 6 protruding into the container opening 5 from above formed as a funnel 16 with a connection for fastening a hose 21 which is immersed in the product of the bottle 26 (the product itself is not shown).
• To close the suction opening 4 there is a valve disk 7 on the funnel 16 of the lower pump part 6, which in the initial position shown seals the suction opening 4 with its outer edge region 25.
• a suction chamber 14 which is delimited by the valve disk 7 and a deformable hood 10 and which is operatively connected to the hood 10.
• the lower opening 2 of the dispensing channel part 3 ′ is guided in the center of the valve disk 7 and is likewise closed by the valve disk 7 in the starting position shown.
• the elastically deformable hood 10 is fastened in a sealing manner above the partially angled upper dispensing channel part 3 ′′ with an application opening 24 on an upper edge 9 of the pump upper part 8.
• the inside of the hood 10 is formed with a stop 13 at its upper end, by means of which its axial displacement (deformation ) is limited when the donation channel part 3 "is reached.
• an axially displaceable protective cap is placed on the pump upper part 8
• the protective cap 18 attached, by the displacement of which the hood 10 is also moved indirectly.
• the protective cap 18 is slidably guided and held within the pump upper part 8 by annular beads 29, 29 '.
• FIGS. 2 and 3 show a similar (second) embodiment of the dispenser pump 1 'according to the invention.
• the dispenser pump 1 'for protecting the hood 10 is no longer covered here with an axially displaceable protective cap, but rather by a hinged cover 12 which is connected to the upper pump part 8 via a hinge 11.
• a hinged cover 12 Opposite the hinge 11 there is a clamp closure 23 on the hinged cover 12 which, when the hinged cover 12 is closed, engages on an upper edge of the pump upper part 8.
• an upper air hole 17 for pressure equalization is arranged laterally in the pump upper part 8 outside the suction chamber 14, which is closed with a sealing pin 28 in the hinged cover 12 for transport security.
• FIG. 4 and 5 show a further (third) embodiment of the dispenser pump 1 "according to the invention in a partially sectioned perspective view (FIG. 4) and in a vertical section (FIG. 5).
• the suction chamber 14' is designed like an piston chamber as an annular space which The lower end of the suction chamber 14 'is, as before, formed by the valve disc 7, while the upper end is the annular piston 32, which surrounds the upper part of the donation channel 3 "or the intermediate sleeve 35 in a stationary manner and is axially displaceable with this via the lower dispensing channel part 3 '.
• the design of the suction chamber 14 'with an annular piston 32, which is connected to the hood 10' and the dispensing channel part 3 "and is axially displaceable, also results in a direct mode of operation which is different compared to the dispenser pumps 1, 1 'of FIGS. 1 to 3 the axial displacement of the hood 10 'due to an external pressure downward, the annular piston 32 is also moved axially downward, the internal pressure rises in the suction chamber 14' and the center of the valve disk 7, in the manner described, releases the lower opening 2 of the dispensing channel part 3 'arranged directly above it , The product is now dispensed from the suction chamber 14 'through the dispensing channel 3 out of the application opening 24.
• the resetting of the hood 10 ′ in the suction chamber 14 ′ creates a negative pressure, which also warps the valve disk 7 in its outer edge region in the manner described, thus opening the suction opening 4 and again producing product in the suction chamber 14 'sucks.
• the hood 10 ' is forced back with the aid of a return spring 33, which is arranged outside the dispensing channel 3 and the suction chamber 14' in a closed annular space 34 and supports the pump upper part 8 'with respect to the pump lower part 6'.
• the outer wall of the lower pump part 6 ' is formed with an upper profile 36 for fastening a protective cap 45 (FIG. 6). Separated by an annular web 38, a lower profile 37 is also provided in the outer wall in order to be able to press the pump lower part 6 ′ firmly into a container opening.
• FIGS. 6 and 7 show, in a partially sectioned perspective view (FIG. 6) and in a vertical section (FIG. 7), a further (fourth) dispenser pump 1 that functions with the same principle of action as for the dispenser pump 1 "of FIGS. 4 and 5 '", which is characterized above all by a simpler design compared to the dispenser pump 1".
• the return spring 43 for resetting the container hood 10 is no longer arranged in a closed annular space outside the suction chamber 14" and outside the dispensing channel 3, but inside of the donation channel 3.
• the upper end of the return spring 43 is supported within the upper donation channel part 3 "on an inner edge 41 and the lower end on a corresponding inner edge 41 'on the lower end of the lower donation channel part 3'.
• dispenser pump 1 with an upper pump part 8" which can be inserted axially into the lower pump part 6 ", through which its components (hood 10", dispensing channel part 3 "and annular piston 42) are also axially opposite the components of the lower pump part 6" (suction chamber 14 ", Lower part of the dispensing channel 3, valve disc 7) are displaceable, the dispenser pump 1 '" can be made leaner due to the omission of the intermediate sleeve and the annular space for the return spring with less construction effort and advantageously.
• FIG. 6 shows the dispenser pump 1 ′′ with a protective hood 45, which is placed on the upper profile 46 of the outer wall up to the ring web 48.
• a lower profile 47 is formed on the outer wall for the sealing insertion of the pump lower part 6 ′′ in a container opening.
• FIG. 8 Shown in FIG. 8 is an oblique view from the rear, in FIG. 9 a side view and 10 is a plan view.
• the invention is not limited to the exemplary embodiments shown, but can be used in a wide variety of forms, provided that the basic idea of the invention is to design the suction chamber of the dispenser pump with a valve disk which has a dual function. LIST OF REFERENCE NUMBERS

Landscapes

• Closures For Containers (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Applications Claiming Priority (1)

Publications (2)

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ID=34626346

Family Applications (1)

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• 2003
  • 2003-11-04 WO PCT/EP2003/012267 patent/WO2005051771A2/fr active IP Right Grant
  • 2003-11-04 EP EP03775285A patent/EP1694564B1/fr not_active Expired - Lifetime
  • 2003-11-04 US US10/578,202 patent/US7757900B2/en not_active Expired - Fee Related
  • 2003-11-04 DE DE50307789T patent/DE50307789D1/de not_active Expired - Lifetime
  • 2003-11-04 AU AU2003283343A patent/AU2003283343A1/en not_active Abandoned
  • 2003-11-04 AT AT03775285T patent/ATE367970T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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