EP0985454B1 - Spender für Medien - Google Patents

Spender für Medien Download PDF

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Publication number
EP0985454B1
EP0985454B1 EP99117184A EP99117184A EP0985454B1 EP 0985454 B1 EP0985454 B1 EP 0985454B1 EP 99117184 A EP99117184 A EP 99117184A EP 99117184 A EP99117184 A EP 99117184A EP 0985454 B1 EP0985454 B1 EP 0985454B1
Authority
EP
European Patent Office
Prior art keywords
valve
medium
dispenser
chamber
set forth
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
EP99117184A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0985454A3 (de
EP0985454A2 (de
Inventor
Karl-Heinz Fuchs
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.)
Aptar Radolfzell GmbH
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
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 Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Publication of EP0985454A2 publication Critical patent/EP0985454A2/de
Publication of EP0985454A3 publication Critical patent/EP0985454A3/de
Application granted granted Critical
Publication of EP0985454B1 publication Critical patent/EP0985454B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
    • B65D47/2062—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem
    • B65D47/2075—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem in which the stem is raised by the pressure of the contents and thereby opening the valve
    • 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
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into 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
    • B05B11/0005—Components or details
    • B05B11/0059—Components or details allowing operation in any orientation, e.g. for discharge in inverted position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0072—A valve member forming part of an outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0075—Two outlet valves being placed in a delivery conduit, one downstream the other
    • 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
    • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
    • 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
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1026—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem the piston being deformable and its deformation allowing opening of the outlet
    • 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
    • B05B11/1052—Actuation means
    • B05B11/1053—Actuation means combined with means, other than pressure, for automatically opening a valve during actuation; combined with means for automatically removing closures or covers from the discharge nozzle during actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/107—Gate valves; Sliding valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers

Definitions

  • the invention relates to a dispenser, e.g. in DE-196 27 288, with which e.g. flowable media can be released or discharged under pressure.
  • a dispenser e.g. in DE-196 27 288, with which e.g. flowable media can be released or discharged under pressure.
  • liquid media but also pasty, powdery and / or gaseous media are suitable.
  • the dispenser is to be portable with a single hand and simultaneously actuatable for the discharge. He or most of its parts should consist of injection molding or plastic.
  • the medium can be discharged very atomized, but the dispenser should be particularly suitable for dispensing individual media clusters or drops. They have at least 5 or 15 and the highest 40 or 25 .mu.l volume and contain medical agents for the treatment of the eyes or the like.
  • the donor should be microbiologically as dense as possible to prevent bacterial contamination of the stored medium from the outside.
  • the medium should be protected against such impairments before the first use (priming) of the dispenser during the longest possible storage time, but also after the first media discharge.
  • the dispenser can be designed for a single discharge of a medium dose or for the discharge operation to be completely emptied only moved in one direction. No return or intake stroke is required.
  • the entire media supply can be contained without additional media storage from the outset in a delivery chamber, which is variable in volume for pressure promotion of the medium.
  • the dispenser or the discharge operation can also work reversibly, namely repeatedly over a working stroke for pressure delivery and an immediately subsequent return stroke for the suction of a further dose of media in the delivery chamber.
  • the microbiological seal should always be restored until the next discharge, which is not always necessary with a disposable dispenser.
  • valves are suitable for this seal. Their closing gaps lie one behind the other in the flow direction in the outlet channel.
  • the downstream last valve is located as close as possible to the media outlet or at the opening limit of this outlet, which is formed by the transition between an inner circumference and an end face adjoining transversely thereto. At this juncture, the medium detaches from all inner circumferences or inner surfaces of the dispenser to the outside, but may still be directed downstream of the dispenser to outer surfaces.
  • the invention has for its object to provide a dispenser in which disadvantages of known designs avoided or advantageous effects of the type mentioned are to be achieved.
  • the dispenser is to ensure a repeated microbiological seal against the ingress of germs through the opening boundary of the media outlet or inflow.
  • the dispenser should be easy to handle or build up.
  • the donor should by Assembling of modules be adapted to be adapted to media different flow behavior.
  • the dispenser has a valve that closes with a high surface pull. Its closing gap can also form the mentioned opening limit of the media outlet. As a result, the closing gap extends to the outermost possible point of the outlet channel, at which the medium is removed during the discharge. This site is microbiologically sealed when the valve is closed. Germs can therefore settle at best on the always freely accessible outside of the donor, but not penetrate the dense closing gap upstream of internal donor surfaces.
  • a throttle gap is provided downstream of the valve-opening media portions. Its passage cross section is substantially smaller than that of the open valve and may be variable depending on the media pressure. For example, the open flow area of the valve may be at least 2, 40 or 50 times larger than the throttle area.
  • the closing force is expediently reduced only at a medium pressure in the outlet channel, which is at least 0.7 or 1 or 1.4 bar.
  • the valve could be opened by purely mechanical actuation, regardless of the media pressure. However, it is expediently opened by fluid control when the media pressure has reached the stated value.
  • the said tightness and the prevention of germ introduction with the valve open can also be improved by the smallest possible valve paths.
  • the maximum relative valve travel of the two valve bodies for opening or closing is less than 2 mm, 1 mm, 0.7 mm or 0.4 mm, for example 0.3 mm.
  • the medium then occurs almost without pressure or capillary creeping through the valve gap out. Upstream of this, the higher fluid pressure mentioned keeps the valve open.
  • means, such as a pump may be provided to produce an even higher or two to five times higher media pressure. It is for example at least 4, 6 or 7 bar.
  • valve This allows the valve to be kept open.
  • a substantially lower pressure of, for example, at most or less than two or one bar is generated in the delivery chamber
  • a force transmission is advantageously provided for opening the end valve between the delivery chamber and the control member for opening the end valve.
  • the opening pressure acts on correspondingly large areas of the control member. Possibly. are areas on the media pressure in the closing direction, in contrast, much smaller.
  • another valve Upstream of the end valve, another valve may be provided. It has the characteristics of the throttle. Also this valve closes microbiologically tight, e.g. upstream immediately adjacent to the media outlet by radial pressure.
  • the closing surfaces of the throttle valve are in the region of the media outlet forming nozzle channel or in this. One of these closing surfaces may be integral with one of the closing surfaces of the closing gap at the media outlet.
  • the same valve body can have a closing surface movable to open a valve and an opening of the other valve, e.g. with the end valve open, form a fixed closing surface for the throttle valve.
  • the media portion serving for the valve opening is already pre-throttled in the flow direction throttle or end valve in constant throttle cross sections.
  • the medium is also throttled at the transfer from the delivery chamber into the outlet channel or blocked microbiologically tight at this transition.
  • a spring-loaded outlet or pressure relief valve is suitable.
  • the closing surfaces of each of the valves can only have line contact or maximum closing pressure along a single, for example, annular line. As a result, maximum specific surface pressures act.
  • One of the closing surfaces is therefore limited in each case as a sharp edge of two mutually angle-closing flanks or formed by a spherical surface.
  • the medium is manually conveyed by a push piston pump or a flexible squeeze container, such as a tube.
  • a push piston pump or a flexible squeeze container such as a tube.
  • the entire valve control of the dispenser is arranged in the constricted tube tip, which is formed integrally with the tube jacket.
  • a thrust piston pump whose cylinder or pump piston runs in the pumping stroke with the media outlet counter to the opening direction of the movable valve body.
  • a drop former is provided. It is used to collect the medium, in particular when the dispenser is kept upside down, with the medium outlet facing downwards, to form an exposed drop of a metered volume. The drop then adheres to the dispenser with a smaller diameter than its largest diameter, so that it does not become detached until its lower end surface comes into contact with a counter-surface, for example the eyeball. With this touch, the drop begins to flow over the opposite surface.
  • the drop collector or drop former expediently has a convex and / or concave adhesive surface for the drop. It can be spherical or smooth or polygonal to increase its surface area with the same footprint. It connects directly to the closing surfaces of the end valve. It is formed by the end of a mandrel passing through the media outlet.
  • the dispenser 1 has two units 2, 3 with one-piece basic bodies 4, 5. Their mutual displacement leads to shortening and lengthening of the dispenser 1.
  • the support body 5 is attached with a flange 7 close to the neck of a constricted memory 6, such as a bottle of glass o. The like., Attached.
  • the units 2, 4 and 3, 5 form a pump 9 or thrust piston pump with a manual discharge operation. All parts are in the axis 10.
  • the medium flows during discharge parallel to the axis 10 in the direction 11 of the unit 3 through the unit 2 from the media outlet 13.
  • the unit 2 in the opposite direction 12 with the outlet 13 relative to the unit. 3 postponed.
  • the outlet 13 may be perpendicular to the axis 10 at right angles. It is formed by the end of an outlet channel 14 passing through only the unit 2. Its upstream end is connected directly to a delivery chamber 15. It is limited by both bodies 4, 5 volume variable. Upstream, the chamber 15 connects valve-free to a pre- or suction chamber 16. It is supplied valve-free via a riser 17 from the bottom of the memory 6 with medium. According to its emptying flows into the memory at each stroke from the outside atmospheric air via a vent 18 after. It is limited by both bodies 4, 5. The return stroke of the units 2, 3 to the longer initial position of the dispenser 1 is driven by a spring 19. It is as a permanently biased helical compression spring on both bodies 4, 5 directly supported.
  • valves 20 to 23 When flowing from the chamber 15 to the outlet 13, the medium is sequentially and separately controlled by valves 20 to 23. They lie in this number and order from the region of the outlet 13 upstream to the end of the chamber 15. They each form a separate longitudinal section of the channel 14.
  • the ventilation 18 is controlled by a valve 24.
  • the valve 20 has two separate, nested, one-piece valve body 25, 26. Its closing surfaces 27, 28 limit the outlet 13. At him, the medium from the dispenser 1 dissolves into the open or it just sticks
  • the outer, annular and conically widened in the direction 11 closing surface 28 forms the end of a one-piece limited nozzle bore 29 of the unit 2.
  • the inner, complementary annular or conical closing surface 27 is formed by the pin-shaped body 25 formed. It is moved with a controller 30 for valve opening in the direction 11 when in the chamber 15, a correspondingly high media pressure is reached, the valve 23 has opened and the pressure reaches the downstream adjoining region of the channel 14.
  • the controller 30 has a piston 31 with a conical widened in the direction of the piston lip 12, which projects freely from a piston head.
  • the upstream end of the body 25 is firmly anchored.
  • the channel 14 and the rotationally symmetrical shaft 33 of the body 25 pass through the piston crown and limit the channel 14 here together.
  • the shaft 33 has an enlarged head 32. It forms the closing surface 27 adjacent to the outer circumference of the shaft 33.
  • the body 25 is loaded with a permanently preloaded spring 34. It closes immediately downstream of the piston crown and surrounds only the shaft 33 as a helical compression spring within the channel 14.
  • the body 25 is fixed with an annular disc-shaped stop 35.
  • the end of the piston lip 31 is located and with its inner circumference, he limits the channel 14th
  • the cap-shaped valve body 26 has over its outer diameter up to twice longer shell 36. He goes in one piece in a front wall 37 over. It is penetrated by the channel 29 and the opening 13. In the upstream stepped expanded end of the shell 36 engages Direction 11 a sleeve-shaped projection 38 of the body 4 a. Between the end surface and an annular inner shoulder of the stop 35 is fixed. The jacket 36 extends to a handle 39 of the actuator. 8
  • the body 26 of the unit 2 forms in or parallel to the axis 10 a nozzle-shaped discharge head 40. It is continuously tapered in the direction 11 to its end and also for introduction into a body, such as a nostril suitable.
  • the inner circumference of the shell 36 forms up to the stop 35 a sealing tread 41 for the piston 31, the inner periphery of the channel 14 limited. Downstream thereof, the same inner circumference forms a narrower tread 42 for a likewise annular piston 43.
  • Its piston lip protrudes freely in the direction 11 from the bottom of the piston 31 and with its inner circumference also delimits the channel 14.
  • the throttle 22 is provided between the limited by the piston 31, 43 Channel sections.
  • the effective in direction 11 piston surface of the piston 31 is substantially larger than the oppositely acting piston surface of the piston 43. Between the piston lips of the piston 31, 43 adjacent the outer periphery of this one-piece piston unit to an annular drying space, which always remains free of medium.
  • an annular piston or throttle body 44 in the shell 36 and around the shaft 33 is provided downstream immediately adjacent to the unit 31, 43. It has a lip 45 protruding freely in the direction 11 from the inner circumference of a floor. It lies with radial pressure on the outer circumference of the shaft 33 tight. From the same floor and its outer periphery is in the direction 11 around the lip 45 gleichweit a lip 46 before. It rests with radial pressure on the inner circumference of the shell 36 and on the inner surface 47 of the wall 26 at. In the direction 12 is from the same piston head a sleeve-shaped stop 48 for the Piston 43 before. At the two piston bottoms of the pistons 31, 33, 44, the spring 34 is directly on. It is surrounded by the sleeves 43, 48.
  • the lip 45 is surrounded by the lip 46 with radial clearance, is not on the stop 47 by widening of the channel 29 and is tapered at an acute angle in the direction 11. Their radial expansion leads to a movement vector in the direction 11. Between the shaft 33 and on the one hand the lip 45 and on the other hand, the inner circumference of the channel 29 an annular gap 49 of the channel 14 is limited. He is on the one hand on the lip 45 and on the other hand on the surfaces 27, 28 tightly closed. The spring 34 pulls the surface 27 in the direction 12 without self-locking permanently in the seat 28. When the valve 20 is closed, the nozzle channel 49 is also bounded by a part of the surface 27, since it is longer than the seat 28.
  • a projection or drop former 50 is provided. It is formed by the head 32 and possibly subsequent parts of the crowned curved outer end surface 53 of the wall 26.
  • the exposed end surface 51 of the head 32 is curved spherically or hemispherically. It connects via an annular edge 52 directly to the widest region of the surface 27 at. When the valve 20 is closed, the edge 52 directly adjoins the outer side 53 of the wall 37 or the annular edge of the seat 28 flanked by this, which delimits the opening 13.
  • This annular edge is acute-angled in axial section and the edge 52 flanked by an obtuse angle.
  • the outlet valve 23 of the pumping chamber 15 has an acute-angled conical valve seat 55 of the body 4 and a ball 56 with a spherical counter surface made of plastic, metal o. The like.
  • the valve body 56 is against the annular and linear contact with the valve body 55 with a permanently biased spring 57th burdened in direction 12.
  • the helical compression spring 57 bears directly against the bodies 35, 56. It is centered on a freely protruding toward 12 spike of the sealing body 35.
  • the mandrel limits the opening of the body 56 by stop.
  • From the valve 23 to the body 35, the channel 14 is bounded by the projection 38. Its inner circumference is provided with longitudinal or control grooves 58. You have 11 distance from the valve seat in direction 11.
  • the body 4, 5 form a housing 60. It extends from an end wall 61 in the direction 12 to the upstream end of the body 5. About the wall 61 is in the direction 11, only the body 26 and head 40 before free, the outer surfaces free are accessible. An end face of the wall 61 forms the handle 39. About the other end face integrally formed coats 62 to 64 of the body 4 are only in the direction 12 before. The projection 38 projects only over the surface 39.
  • the body 5 also has, at a distance between its ends, an end wall 65 always located inside the body 4 and coats 66 to 68 freely projecting in the direction 11. They are integrally formed with each other.
  • the outermost and longest casing 62 permanently surrounds all remaining walls 63 to 68 and may be set back radially relative to the outer circumference of the wall 61 and / or connect to this outer circumference.
  • the lying next to the radial distance within the shell 62 next or middle shell 63 is located with its outer periphery of the inner periphery of the shell 67 directly opposite, to which it bears sealed in the starting position with an end lip.
  • the sheaths 66, 67 lie permanently between the sheaths 62, 63.
  • the innermost sheath 64 which lies at a radial distance within the sheath 63, lies inside the inner sheath 68. From this, the sheath 67 has the same radial distance as the sheath 66.
  • the upstream, free ends of the sheaths 66 Jackets 63, 64 each form an annular, in the direction 12 acute-angled extended piston lip.
  • the inner periphery of the shell 64 bounds the chamber 15 with a cylinder bore 69.
  • the upstream end is tapered at an acute angle in the direction 12 and forms a closing surface of an inlet valve 70.
  • a piston 71 of the body 5 free from the wall 65 permanently in the jacket 64 before and has at the downstream end of an annular lip 72. It forms a valve body of the valve 70.
  • the surface 69 and the lip 72 define an annular inlet gap. He is inclined after a first, smaller stroke by running the lip 72 on End of the surface 69 tightly closed. Upstream connects to this annular gap, the annular Vorsaughunt 16. It is bounded by the projections 68, 71 and the end lip 73 of the shell 64, since this permanently sealed on the inner periphery of the shell 68 slides.
  • the piston 71 With radial spacing within the lip 72, the piston 71 has a projection or mandrel 74. He engages at the end of the pumping stroke tight or permeable in the inlet 59 and lifts the valve body 56 from the seat 55 mechanically only so far from that the channels 58 are not yet released on their maximum cross-section. The projection of the inlet 59 then engages the annular groove between the projections 72, 74 and the lip 72 abuts the bottom of the annular groove around the projection. To the upstream, conically tapered end of the piston 71 include connecting members, such as ribs 75 of the body 5 at.
  • the flared end lip 77 of the shell 63 is set back in the direction 11 relative to the piston lip 73 and slides after a first short partial stroke of the working stroke via a control surface or step 78 of the inner periphery of the shell 67.
  • the valve 24 is opened with the closing of the valve 70 .
  • the coats 67, 68 together with the coats 63, 64 define an annular chamber 79. Air can be flowed in or sucked in, which can be sucked in between the coats 62, 66, 63, 67 flows.
  • the bottom 65 of the chamber 79 is penetrated by a passage 81. He is completely covered by an annular around the axis 10 filter 80 in the chamber 79.
  • the disc-shaped filter 80 rests with radial compression on the sheaths 67, 68 and on the bottom 65 and can be achieved at the stroke end of the valve body 73.
  • the spring 19 surrounds the parts 63, 64, 67, 68, 80. It lies in the annular chamber directly between the sheaths 62, 63, 66, 67. It is supported directly on the walls 61, 65.
  • the flange 7 forms an annular disc-shaped seal 82. It engages on the side facing away from the member 80 end face of the wall 65 in the annular groove radial play free or on the outer and inner circumference with radial pressure.
  • the member 82 has an annular groove on its downstream end face. It defines with the wall 65 a continuous through the axis 10 annular channel and is connected to the passage 81.
  • To the inner circumference of the seal 82 includes a protruding in the direction of 12 cap 84 of the one-piece flange 7 at. In it engages a protruding from the wall 65, sleeve-shaped projection 83 of the body 5 a.
  • the body 5 With the wall 65 and upstream thereof, the body 5 forms a cap 86 for engagement of the storage neck.
  • recessed annular opening edge is fixed with axial or radial pressure on the seal 82 and the outer periphery of the cap 84.
  • the inner periphery of the cap 86 is provided with a fastening or tensioning member, such as a thread. It engages in a corresponding counterpart on the outer circumference of the storage neck.
  • the end of the jacket 86, 87 abuts an annular shoulder of the memory 6. It is formed by the transition of the memory belly into the memory neck. At the end of the pumping stroke, the body 4 with the jacket 62 does not reach the annular shoulder of the jacket 87.
  • the units 2, 3 and body 4, 5 are secured by a fuse 90, however, against each other to be twisted or withdrawn from each other.
  • a subsequent to the wall 61 slot 88 is provided in the jacket 62. Its end is offset in the direction 11 relative to the free end of the shell 62 and in it engages a cam 89 on the outer circumference of the shell 66 a. In the starting position, the radially freely projecting cam 89 abuts the slot end in the plane of the downstream end face of the wall 65.
  • the body 4 is placed in the direction 12 on the body 5.
  • the cam 89 widens with an inclined surface the shell 62 resiliently until the cam 89 jumps into the slot 88, namely after the walls 62 to 69 overlap each other and intermesh.
  • the bodies 35, 56, 57 are inserted in the direction of 12 in the body 4.
  • the body 40 is placed on the body 4.
  • the bodies 31, 34, 44 are previously inserted in the direction 11 in the body 26, 40.
  • the body 25 is inserted in the direction 12 in the body 4, 40 and made the connection with the piston 31, 43.
  • the free end of the jacket 63 faces the free ends of the sheaths 62, 64 back.
  • the free end 73 of the shell 64 is opposite to that of the shell 62 back.
  • the free ends of the shells 66, 67 are opposite to that of the jacket 68 back.
  • the jacket 66 is opposite the jacket 67 back.
  • Opposite the free ends of the coats 66 to 68 of the piston 71 is back.
  • the body 56 lies in the plane of the wall 61.
  • the bodies 25, 31, 41, 43, 44 lie completely outside the body 4 and in the direction 11 permanently at a distance from the body 4.
  • the inlet valve 70 closes.
  • the chambers 15, 16 are completely filled with medium.
  • the valve 24 opens and any vacuum in the reservoir 6 is equalized.
  • the pressure in the chamber 15 increases until the opening pressure of the valve 23 or the body 56 is reached by the cam 74 before the end of the working stroke.
  • the body 56 opens in the direction 11 on the seat 55 against the force of the spring 57 either with said smaller passage cross-section or subsequently with the passage cross-section of the channels 58.
  • the medium therefore passes under the pressure in the chamber 15 in the channel 14 through the body 35 in the Napfverianaung of the piston 31.
  • the piston 31 is moved under this pressure against the spring 34 together with the body 25 in the direction 11 until the lip 43 abuts the lip 48.
  • the medium flows from the piston cup 31 attenuated through the throttle 22 with increased flow velocity in the again significantly widened piston cups 43, 48, where a flow calming and slowing occurs.
  • the opening stroke of the parts 25, 31, 43 is only 0.3 mm with a maximum diameter of the opening 13, 28 of 5 mm, 4 mm or 2 mm.
  • the medium flows against the inner circumference of the lip 45. It is lifted under the media pressure radially from the cylindrical portion of the shaft 33 by a stroke which at least three or two tenths of a millimeter at least 10 or 20 times smaller than the axial stroke the closing surface 27 is, for example between 0.005 and 0.01 mm.
  • the opening pressure of the valve 20 is at 1.5 bar at least half the pressure in the chamber 15, which may be 7 bar to 8 bar.
  • the medium returns to an expanded calming room. It is bounded between the lips 45, 46 and from the upstream end of the channel 29 and the shaft 33. From there, the medium flows very slowly along the shaft 33 in the channel 49 between the separate surfaces 27, 28.
  • the piston 44 is permanently stationary relative to the housing 36, 37.
  • the settling chamber between the pistons 43, 44 is variable in volume. It varies with the stroke of the valve 20.
  • the spring 57 closes the valve 23. It can first close the passages of the channels 58 and limit to the narrower passage cross-section and then lie tightly against the seat 55. Thus, a subsequent flow of the medium from the chamber 15 into the channel 14 is possible.
  • the spring 34 pulls the valve body 25 via said stroke in The seat 28. Also depending on the adjustment at the same time, before or after said closing operations of the valves 20, 23 also closes the valve 21.
  • the space between the closing surface 28 and lip 45 is either completely filled with medium or it is at least partially emptied.
  • the channel 14 remains completely filled with medium after initial use (priming).
  • the piston 43 lifts off from the stop 48, which limits the mentioned stroke elastically yielding or rigid.
  • the spring 19 opens the valve 70.
  • the medium sucked into the chamber 16 during the return stroke by the piston 73 abruptly flows into the evacuated chamber 15.
  • medium is sucked through the conduit 17 into the chamber 16.
  • the medium flows around the parts 76, 75, 71.
  • the chambers 15, 16 communicate permanently because of the opened valve 70.
  • Shortly before the end of the return stroke also closes the valve 24 of the chamber 79. From her the air has passed while killing any germs in the filter 80 through the flange 7 in the memory 6.
  • the conduit 17 and the extension 85 can also be omitted. Then the pump 9 sucks only in the overhead position from the memory 6 through the flange 7 medium, because the medium in the overhead position by gravity flows into the chambers 15, 16.
  • FIGS. 2 to 4 parts which correspond to one another are given the same reference numerals as in FIG. 1 but with the indices. All parts of the description apply mutatis mutandis to all training. All features of each training may be provided in the other embodiments in addition and / or in combination. In this respect, all parts of the description apply mutatis mutandis to all embodiments.
  • the reservoir 6a and the pump 9a of the dispenser 1a are formed by a flexible or resiliently spring-loaded crimp container. It is an elongated tube along the axis 10a.
  • the bodies 4a, 5a are integrally formed with each other. Opposite outer sides of the circumferential and the entire length integral tube sheath 62a, 66a form the handles 39a for compressing and depleting the storage volume.
  • the head 40a including the walls 36a, 37a, 38a, are integrally formed with the sheath 62a, 66a and merge thereinto via an intermediate section 61a conically widened in the direction 12a.
  • the end of the accumulator 6a remote from the outlet 13a and head 40a is initially open in a cylindrical manner.
  • the controller 30a or the parts 31a, 33a, 34a, 35a, 43a, 44a are introduced in the direction 11a and placed in the body 26a successively or in a functional position as a preassembled unit. Thereafter, the medium is filled through this opening in the memory 6a. Then, this end is squeezed flat until opposing wall sections 62a, 66a abut directly on each other via a transverse strip as an endless belt and by adhesion, such as welding, are secured together. Thus, a shutter 7a for the storage space and the pressure chamber 15a is formed. The volume of the memory 6a therefore decreases with each metered Renaustrag as its media volume. This can also be achieved by a climbing piston. Instead of the shutter 7a, it is slidably carried along by the medium in the direction 11a, close to the inner circumference of the memory 6a.
  • the piston 31a forms with the shaft 33a a preassembled or one-piece unit and is not in the initial position on the body 35a. This only forms a narrowed throttle 23a for the valve-free passage of the medium from the pressure chamber 15a to the channel 14a.
  • the shaft 33a completely encloses the channel 54a. The occurs between the seals 43a, 49a via a transverse channel 22 directly into a surrounding, expanded and annular calming chamber. This chamber always has the same volume.
  • the lip 43a slides on the outer periphery of the shaft 33a. It is formed together with the stopper 48a by a separate from the bodies 31a, 33a, 44a ring or sleeve body.
  • the outer sleeve of the sealing body surrounds its lip 43a with radial clearance, forms with one end of the stop 48a and is located at the other end permanently on the outer sleeve of the body 44a at the front.
  • the lip 45a slides like the lip 43a on the outer periphery of the shaft 33a in its working movements.
  • the lip 46a is conically tapered in the direction 11a.
  • the head 32a is graduated at the narrower end of the surface 27a into a slender, spike-like projection.
  • The is used as a fastening member in a blind hole of the shaft 33a in the direction 12a and fixed by a snap connection without axial play and secured against rotation.
  • the associated snap members are formed integrally with the shaft 33a and the head 32a.
  • the parts 33a, 32a close with the same size end faces congruent to each other.
  • the bottom of the blind hole is spaced from the channel 54a.
  • the spring 34a is supported directly on the body 43a, 48a and presses it against the body 44a and this against the stop 47a.
  • the spring 34a is located in the drying space bounded by the lips 31a, 43a.
  • the end surface 51a may also, as indicated by dash-dotted lines, be concavely curved or recessed in order to be able to hold the drop securely on the smallest possible base area.
  • the user of the dispenser 1a can usually exert a pressure of at most by pressing the handles 39a in the chamber 15a, directed radially to the axis 10a Generate 0.4 to 0.6 bar.
  • the effective area of the piston 31a is selected, in order nevertheless to overcome the counterforce of the spring 34a for opening the valve 20a.
  • the oppositely acting piston surfaces of the bodies 43a, 48a and 44a are correspondingly smaller.
  • an actuation translation can be provided, which acts on the surfaces 39a and for example forms a lateral lever or a clamp or pliers.
  • This lever can form the handles of the discharge operation 8a at a radial distance from the reservoir 6a and on the other side of the axle 10a have a joint, such as a bending or spring joint, through which the caliper levers are integrally connected and movable relative to each other.
  • the spring 34a is disposed in the drying room and does not come into contact with the medium.
  • the levers or other members can also releasably connect a plurality of dispensers 1a, eg via predetermined breaking points, to form a set. The parallel juxtaposed dispensers 1a can then be separated by separating the aligned levers or tabs.
  • the piston unit 71b is fixed to the unit 2b with a piston plunger.
  • a one-piece, elastically yielding piston sleeve is attached at the plunger. Its downstream end forms the axially compressible spring 57b and the other end forms the lip 72b extended in the direction 12b.
  • the piston sleeve forms the annular valve body 56b, the seat 55b of which forms the plunger.
  • the piston sleeve is penetrated by the outlet channel and a core body. It has the channels 58b on the outer periphery. On this body, a sleeve 76b securing the piston sleeve is fastened in the direction 11b with an enlarged end 75b.
  • the sheath 66b of the lid overlaps the outside and the sheath 68b fits snugly against the inside of the sheath 67b.
  • the end of the sheath 67b is defined between the sheaths 65b, 66b with a snap fit.
  • the flange 7b is formed integrally with the lid.
  • the end of the shell 68b forms the valve body 78b of the valve 24b and the conical outside of the lip 72b of its movable valve body.
  • the lid is penetrated by the piston plunger and in it the piston sleeve is permanently with most of its length.
  • the sleeve 38b may be integrally formed with the sleeve 76b and form the stop 35b.
  • the valve 70 b is located in the upstream end 85 b of a narrowed end portion 83 b of the shell 67 b and is formed as a pressure relief valve with a valve ball corresponding to the valve 23. Its valve body is loaded to the closed position by the spring 19b, which lies in the chamber 15b and is supported on the core body.
  • the vent 18b is defined between the lid and the piston sleeve. Downstream of the valve 23b, it passes through the jacket 67b outside the chamber 15b, so that the air flows from here through the filter 80b into the reservoir 6b.
  • the filter simultaneously forms the storage seal, which rests directly on the flange 7b and the jacket 67b tight.
  • An inlet 16b from the reservoir 6b to the chamber 15b may also penetrate the wall 67b immediately adjacent the gasket 80b.
  • the boundary of the inlet 16b forms with the lip 72b an inlet or sliding valve. It is closed after a first stroke and opened again towards the end of the return stroke. As a result, the memory 6b can be completely emptied.
  • This valve and the valve 70b are formed without riser 17 so that only in the overhead position medium can be sucked.
  • the jacket 67b could also be tightly closed at the upstream end instead of an inlet opening.
  • the wall 61b is conically widened at right angles in the direction 12b and connects in one piece directly to the outer peripheries of the shells 36b, 62b.
  • the handle 39b has projections or coaxial ring cams, which prevent sliding of the fingers.
  • the sheaths 61b, 62b permanently enclose the body 5b over most of its length so that only the end 83b protrudes.
  • a crimp ring 86b is provided within the shell 62b, which bears against the flange 7b and on a corresponding flange of the storage neck in each case on the front side and accommodates the seal 80b in the interior.
  • the hanging drop of 20 ⁇ l can be seen, the volume of which is at most three, two or just as large as the volume of the head 32b.
  • the valve 20b is opened and the piston 72b is in the initial position at the beginning of the pumping stroke.
  • 4 also shows in dash-dotted lines a protective cap for the head 40b, which bears tightly against the outer sides of the walls 36b, 37b, 61b and is to be pulled off in the direction 11b from the dispenser 1b.
  • the cap has a projection which is punctiform or annular against the surface 51b of the closed position Body 25b presses. All remaining portions of the surface 51b, however, are non-contact, but this increases the closing pressure between the closing surfaces of the valve 20b during storage.
  • the dispenser 1a may be composed of at most six or only four molded plastic parts and the spring 34a.
  • the parts 43a, 44a, 48a or the parts 35a, 36a, 38a may be integrally formed with each other.
  • the dispenser 1 can consist of seven or eight such molded parts without the reservoir 6, to which three springs 19, 34, 57, the body 56, the filter 80 and possibly the riser 17 are added.
  • the bodies 5, 7, 82, the bodies 31, 44 and the bodies 4, 35 could likewise each be formed in one piece.
  • Each of the springs could also be made in one piece of plastic with one or both of those components against which it is directly supported.
  • the stated characteristics and properties can be provided exactly or only substantially as described and, depending on the requirements, also deviate more strongly, e.g. due to the viscosity of the medium.
  • the illustrated proportions are particularly favorable, in particular if the length of the dispenser 1 measured over the bodies 4, 5, 40 is less than 10 cm or 7 cm and its relatively smaller largest width is less than 5 cm or 3

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Closures For Containers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
EP99117184A 1998-09-07 1999-09-01 Spender für Medien Expired - Lifetime EP0985454B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19840721 1998-09-07
DE19840721A DE19840721A1 (de) 1998-09-07 1998-09-07 Spender für Medien

Publications (3)

Publication Number Publication Date
EP0985454A2 EP0985454A2 (de) 2000-03-15
EP0985454A3 EP0985454A3 (de) 2001-03-07
EP0985454B1 true EP0985454B1 (de) 2006-11-02

Family

ID=7880039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99117184A Expired - Lifetime EP0985454B1 (de) 1998-09-07 1999-09-01 Spender für Medien

Country Status (5)

Country Link
US (1) US6250509B1 (ja)
EP (1) EP0985454B1 (ja)
JP (1) JP4327307B2 (ja)
AT (1) ATE344105T1 (ja)
DE (2) DE19840721A1 (ja)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933330A1 (de) 1999-07-16 2001-01-18 Pfeiffer Erich Gmbh & Co Kg Spender für Medien
JP4210215B2 (ja) * 2001-09-21 2009-01-14 インジ エリッヒ プファイファ ゲーエムベーハ 媒体リザーバを備えた投与装置とこれのためのポンプ装置
CA2460651C (en) 2001-09-21 2011-06-07 Ing. Erich Pfeiffer Gmbh Dosing device with a pumping device
FR2830328B1 (fr) * 2001-09-28 2003-12-05 Socomate Internat Dispositif et procede d'analyse de la structure d'un materiau
DE102005009294A1 (de) * 2004-07-13 2006-02-16 Ing. Erich Pfeiffer Gmbh Spender für Medien
DE102004044344A1 (de) * 2004-09-09 2006-03-30 Ing. Erich Pfeiffer Gmbh Dosiervorrichtung
FR2929249B1 (fr) † 2008-03-27 2012-02-17 Rexam Pharma La Verpilliere Dispositif de distribution de liquide contenu dans un reservoir
DE102008027599A1 (de) * 2008-06-10 2009-12-31 Meadwestvaco Calmar Gmbh Fluidaustragkopf
DE102010048085A1 (de) * 2010-10-04 2012-04-05 Ing. Erich Pfeiffer Gmbh Austragvorrichtung
CN102847627B (zh) * 2012-10-15 2015-04-15 深圳市博纳药品包装材料有限公司 一种流体制剂分配喷雾泵
RU2669930C2 (ru) * 2013-04-16 2018-10-17 Данс Байофарм Инк. Дозирование жидкостей и способы дозирования жидкостей
ES2734570T3 (es) * 2013-04-16 2019-12-10 Dance Biopharm Inc Distribución de líquido
DE102015104646B3 (de) * 2015-03-26 2016-06-30 Aero Pump Gmbh Abgabevorrichtung für ein Fluid
US9981278B2 (en) * 2016-05-10 2018-05-29 Zhejiang Jm Industry Co., Ltd. Extended emission time liquid sprayer
US9943867B2 (en) * 2016-05-10 2018-04-17 Zhejiang JM Industry Co., Ltd Extended emission time liquid sprayer
US20170328361A1 (en) * 2016-05-10 2017-11-16 Zhejiang Jm Industry Co., Ltd. Fluid Pump
US10617832B2 (en) * 2017-11-22 2020-04-14 Southwest Research Institute High precision, low dose atomizer
CN108670809B (zh) * 2018-08-07 2023-11-28 朱远湖 护理装置手柄、刮痧装置、按摩装置及多功能护理装置
KR102588714B1 (ko) * 2018-09-27 2023-10-16 에스에이치엘 메디컬 아게 에어로졸 디스펜서용 잠금 메커니즘
CN110605288A (zh) * 2019-10-12 2019-12-24 广州达意隆包装机械股份有限公司 分配器及洗瓶机

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US3107035A (en) * 1960-08-12 1963-10-15 Dougherty Brothers Inc Squeeze cap for dispensing liquids in drop units
US4402432A (en) * 1980-02-13 1983-09-06 Corsette Douglas Frank Leak-proof dispensing pump
DE3315334A1 (de) * 1983-04-28 1984-10-31 Pfeiffer Erich Gmbh & Co Kg Zerstaeuber- oder dosierpumpe
DE3503354A1 (de) * 1985-02-01 1986-08-07 Ing. Erich Pfeiffer GmbH & Co KG, 7760 Radolfzell Wirkstoff-spender
FR2593147B1 (fr) * 1986-01-17 1988-03-18 Aerosol Inventions Dev Conditionnement sterile de substances fluides liquides et semi-liquides.
US4757922A (en) * 1986-11-20 1988-07-19 Menda Scientific Products, Inc. Liquid dispenser
US5238153A (en) * 1991-02-19 1993-08-24 Pilkington Visioncare Inc. Dispenser for dispersing sterile solutions
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DE19610457A1 (de) * 1996-03-16 1997-09-18 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung für Medien
DE19627228A1 (de) * 1996-07-05 1998-01-08 Pfeiffer Erich Gmbh & Co Kg Austragvorrichtung für Medien

Also Published As

Publication number Publication date
US6250509B1 (en) 2001-06-26
ATE344105T1 (de) 2006-11-15
EP0985454A3 (de) 2001-03-07
JP4327307B2 (ja) 2009-09-09
JP2000116782A (ja) 2000-04-25
DE59913956D1 (de) 2006-12-14
DE19840721A1 (de) 2000-03-09
EP0985454A2 (de) 2000-03-15

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