EP3433493A1 - Pompe doseuse pour un dispositif doseur et dispositif doseur - Google Patents

Pompe doseuse pour un dispositif doseur et dispositif doseur

Info

Publication number
EP3433493A1
EP3433493A1 EP17712480.7A EP17712480A EP3433493A1 EP 3433493 A1 EP3433493 A1 EP 3433493A1 EP 17712480 A EP17712480 A EP 17712480A EP 3433493 A1 EP3433493 A1 EP 3433493A1
Authority
EP
European Patent Office
Prior art keywords
pump
piston
check valve
metering
liner
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.)
Granted
Application number
EP17712480.7A
Other languages
German (de)
English (en)
Other versions
EP3433493B1 (fr
Inventor
Hyeck-Hee Lee
Ute Steinfeld
Markus Mahler
Frank Holzer
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.)
F Holzer GmbH
Original Assignee
F Holzer 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 F Holzer GmbH filed Critical F Holzer GmbH
Priority to RS20210050A priority Critical patent/RS61323B1/sr
Priority to PL17712480T priority patent/PL3433493T3/pl
Publication of EP3433493A1 publication Critical patent/EP3433493A1/fr
Application granted granted Critical
Publication of EP3433493B1 publication Critical patent/EP3433493B1/fr
Priority to HRP20210175TT priority patent/HRP20210175T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation
    • 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
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • B05B11/0032—Manually actuated means located downstream the discharge nozzle for closing or covering it, e.g. shutters
    • 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
    • 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
    • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed 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
    • B05B11/01—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
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on 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
    • B05B11/1042—Components or details
    • B05B11/105—Sealing arrangements around pump actuating stem
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/121—Valves; Arrangement of valves arranged in or on pistons the valve being an annular ring surrounding the piston, e.g. an O-ring
    • 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
    • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers

Definitions

  • the present invention relates to a metering pump for a metering device, wherein the metering pump can be connected to a storage container.
  • the dosing pump comprises a check valve which has bottom-side sealing elements which allow an internal sealing of the dosing pump.
  • the present invention relates to a metering device in which the metering pump according to the invention is connected to a storage container.
  • the object of the present invention was therefore to develop known from the prior art metering pumps in such a way to solve the above problems.
  • the metering pump on which the invention is based should be designed so that the highest possible fluid tightness is ensured, despite all, however, a sufficiently simple mechanical operability is ensured, so that can be largely dispensed with strong springs and the associated large operating forces.
  • a metering pump according to the invention should have a lower tendency to jamming.
  • the invention thus relates to a metering pump for a metering device for metered delivery of a liquid which can be connected to a storage container , comprising a cylindrical pump body comprising a first hollow cylindrical pump body section open in the direction of the storage container and a second hollow cylindrical pump body section open in the direction of an actuating body, an inner hollow cylinder which is open at both ends and is arranged concentrically with the first pump body section is a continuous channel having a piston which is concentrically mounted in the pump body and the inner hollow cylinder, and is sealingly formed with an inner wall of the inner hollow cylinder, and connected to the pump body and with respect to the pump body movably mounted actuating body, on a upper end has an outlet for liquid and a recess open in the direction of the second pump body portion recess, wherein within the recess of the actuating body, a liner is received, the one in Richtu ng the second pump body portion having open recess, wherein the liner fluidly sealingly arranged to the
  • the non-return valve has at least one sealing element which enables a fluidic sealing of the non-return valve with respect to the piston. light.
  • the present invention thus relates to a metering pump, which together with a storage container results in a metering device.
  • the essential components of the dosing pump are:
  • the cylindrical pump body is divided into two functional sections and has a first hollow cylindrical pump body section, which is designed to be open downwards, in the direction of the storage container to be mounted.
  • the cylindrical pump body has a second open hollow cylindrical pump body portion, which is designed to be open in the direction of an attached or attached operating body.
  • the cylindrical pump body may be in its center, i. between the two sections have a guide element with which a piston within the cylindrical pump body is feasible.
  • the open inner hollow cylinder is attached to the lower, first pump body portion and arranged concentrically therewith.
  • the concentric arrangement results in that the cylindrical recess of the pump body and the hollow cylinder are arranged axially to each other.
  • the piston is designed as a hollow piston and has a continuous channel.
  • the piston is dimensioned such that it can be performed concentrically in the pump body and attached to the pump body hollow cylinder.
  • the piston is movably arranged in the pump body and in the hollow cylinder and at least at its lower end sealingly formed with respect to the inner wall of the inner hollow cylinder. Due to its mobility, a hollow volume can be formed in the inner hollow cylinder, which can also be referred to as a "pump chamber".
  • the actuator body is connected to the upper part of the hollow cylindrical pump body, the second pump body section, connected or can be connected to this.
  • the actuator body is movably mounted relative to the pump body.
  • the actuator body has at its upper end an outlet for liquid.
  • a recess open in the direction of the second pump body section is formed, into which a line can be received.
  • a liner The liner is accommodated in the space provided for the pump body.
  • the liner has in turn a recess into which a check valve can be added.
  • the liner has a fluid channel through which liquid from the recess of the liner to the outlet on the actuator body can be performed.
  • the liquid channel is preferably carried out by the recess through the wall of the liner and extends along the outer surface of the liner in the direction of the outlet.
  • the liner is fluidly sealed to the piston by having its lower end seated, for example, on the upper end of the hollow piston and held in position there (e.g., by design, by appropriately sizing the recess of the actuator body and the liner).
  • a check valve Within the recess of the liner a movably mounted and against the recess of the liner fluidly sealing trained check valve is arranged.
  • the check valve can operate within the recess such that in the unactuated state, the channel is sealed by the check valve, during actuation by the liquid flow, the check valve is deflected from its rest position, that the channel of the liner is released and liquid from the storage container through the channel of the piston can flow towards the outlet opening in the actuator body.
  • the invention is characterized in that at least one sealing element is arranged on the bottom side of the check valve, which allows a fluidic sealing of the check valve relative to the piston.
  • the check valve thus enables an additional or particularly efficient sealing of the piston, and in particular of the hollow volume of the piston with respect to the recess of the liner. As a result of this additional sealing, production errors arising from production can be compensated, so that an efficient sealing of the inner flow path of the liquid to be metered and / or gases is ensured even in the case of a non-ideal geometric configuration or arrangement of all components of the metering pump.
  • the non-return valve by a through the channel of the piston to the check valve after completion of the actuation operation on the check valve acting suction through the at least one sealing element allows the fluidic sealing.
  • the sealing thus takes place as soon as the sealing element has made contact with the wall or the neck of the piston.
  • this negative pressure is also applied to the non-return valve (the so-called “suction force"), which is thereby sucked into the piston, thereby enabling improved sealing, particularly in the case of flexible or elastic design of the sealing elements, for example in the form of sealing lips.
  • a preferred embodiment thus provides that the sealing element is elastic.
  • the at least one sealing element is designed as a sealing lip, in particular as a sealing lip which surrounds the channel of the piston or can be partially inserted into the channel.
  • the at least one sealing element terminates in a form-fitting manner with the wall of the piston and / or engages in the channel of the piston. It is further preferred that at least one sealing element is formed integrally with the non-return valve with the check valve or molded onto the non-return valve.
  • a one-piece design can for example be achieved in that the complete check valve including associated sealing element, such as sealing lip is produced in an injection molding process.
  • the sealing element and the check valve are preferably formed from the same materials.
  • the at least one sealing element can have a height of from 0.3 to 5.0 mm, preferably from 0.5 to 2.0 mm, and / or pronounced in the direction of the piston
  • a further preferred embodiment provides that the at least one sealing element (151, 152) is arranged on the bottom side on the check valve (150) and preferably with respect to the bottom of the check valve (150) at an angle of 5 to 175 °, preferably 45 to 135 °, more preferably 80 to 100 °, in particular 90 ° is arranged.
  • the at least one sealing element is made of a thermoplastic material, in particular of a polyolefin, such as e.g. Polyethylene, polypropylene, polystyrene, of an elastomeric material, in particular rubber or rubber, or of a thermoplastic elastomer, in particular TPE-U, is formed.
  • the at least one sealing element is formed of the same material as the check valve.
  • the check valve by an elastic element which exerts a force acting in the direction of the piston restoring force on the check valve, in particular a spring in the non-actuated state in a opposite the channel of the piston and the fluid channel of the liner fluidly sealing position is maintained.
  • an element to be arranged between the actuating body and the pump body, which element exerts a restoring force on the actuating body during and / or after actuation, in particular a spring element.
  • the first pump body portion may include a device for fixing the storage container.
  • This device can be designed for example as a snap closure or as a screw cap.
  • both the storage container and the first pump body section have corresponding elements for corresponding attachment of the storage container.
  • a seal is arranged which seals the storage container with respect to the metering pump.
  • the seal may e.g. be arranged in a designated recess of the first pump body portion.
  • the inner hollow cylinder has at its end, which is open in the direction of the storage container, a valve section in which an inlet valve, which is designed in particular as a disk valve or as a ball valve, is arranged.
  • a further advantage is that open in the direction of the storage container
  • a riser is arranged.
  • the riser can be dimensioned so that it extends to the bottom of a storage container attached to the metering pump.
  • a sealing element for sealing the piston.
  • Such a seal is described in detail DE 10 2009 099 262. All statements regarding this sealing element also apply without restriction to the present invention.
  • the disclosure of this patent application is made by reference to the subject matter of the present patent application asserted.
  • the present invention relates to a metering device comprising a metering pump according to the invention described above and a storage container, wherein metering pump and storage container with each other for
  • Storage container and metering pump can be connected to each other, for example by means of a snap closure, but also by means of a screw to the metering device.
  • the metering device can be designed as a pressure-compensating metering device or as a pressure-compensating metering device.
  • FIG. 1 shows a metering device according to the invention.
  • Figure 2 shows a detail of a metering pump according to the prior art.
  • 3 shows a detail of a metering pump according to the prior art.
  • Figure 4 shows various embodiments of a check valve for use in a metering pump according to the invention.
  • Figure 5 the metering pump according to the invention in the open state.
  • FIG. 6 shows the metering pump according to the invention in almost closed state.
  • FIG. 7 shows the metering pump according to the invention in the closed state.
  • FIG. 8 shows a further embodiment of a metering pump according to the invention in open condition.
  • FIG. 9 shows the metering pump according to FIG. 9 in an almost closed state.
  • 10 shows the metering pump according to the invention in completely closed
  • the metering device 300 has a metering pump 100 which is mounted on a storage container 200.
  • the metering pump according to the invention consists of a cylindrical pump body 110, which has a lower portion 111 and an upper portion 112.
  • an inner hollow cylinder 120 is attached, which may be connected to the pump body 110, for example via a snap closure.
  • the cylindrical pump body 110 and the inner hollow cylinder 120 in this case have a concentric recess, in which a hollow piston 105 can be guided with an inner hollow volume 106 movable up and down.
  • the actuating body 130 in this case has a recess 132, within which a liner 140 is fixed.
  • the liner 140 also has a recess 141, which is designed to be open at the bottom.
  • the liner also has a fluid channel 142 which communicates with the outlet 131 in the actuator body 130.
  • the fluid channel 142 can thereby lead fluid out of the recess 141 of the liner 140 through its wall to the outlet 131.
  • the liquid channel 142 is preferably formed as a recess in the outer wall of the liner 140.
  • fluid to be dispensed can escape outward from the metering device upon actuation of the actuating body 130.
  • a check valve 150 is movably arranged, which is pressed in the recess 141, for example via a return spring 160 down.
  • the check valve 150 is thereby moved from the spring 160 in the rest position of the metering device to the upper Pressed end of the piston 105 and thus closes the continuous recess 106 of the piston 105.
  • the actuator body 130 is formed opposite to the cylindrical pump body by means of a return spring 170.
  • the downwardly open hollow cylindrical pump body section 111 has an inlet valve, for example a disk valve 121, at its lower end.
  • the piston 105 Upon actuation of the actuator body 130, d. H. upon depression of the actuating body 130 in the direction of the cylindrical pump body 110, the piston 105 is therefore also pressed downwards. At this time, the volume (pumping chamber 122) enclosed by the lower end of the piston 105 in the inner hollow cylinder 120 is minimized, so that liquid trapped therein flows upwardly through the passage 106 of the piston 105 toward the liner 140. The build-up pressure becomes the check valve
  • the actuating body can be closed with a removable cap 190, so that the outlet 131 can be protected when not in use, for example against contamination and / or dehydration.
  • a removable cap 190 is essential to the invention.
  • the check valve 150 sealing elements such as sealing lips
  • the frame I framing the recess 141 of the liner 142 in FIG. 1 is enlarged in the following figures (with the exception of FIG Figure 4).
  • Figure 2 shows an embodiment of a check valve 150 disposed in the liner 140, as known in the art.
  • the liner 140 has a downwardly open recess 141, within which the check valve 150 is disposed.
  • the liner 140 is seated on the piston 105, the check valve 150 should also end with the upper edge of the piston 105.
  • the check valve 150 is pressed by a spring element 160 to the upper edge of the piston 105.
  • the check valve 150 has no sealing elements.
  • FIG. 2 illustrates a typical situation in practice in which, for example, production errors and / or production-related distortion of some components, for example the piston 105 and / or the liner 140, lead to a defect Xi, for example the liner 140 is not present harmonious and positive closes with the piston 105.
  • the check valve 150 guided therein is thus not positively formed in the closed position with the upper end of the piston 105, so that the sealing function of the check valve is formed only inadmissible. It thus comes to the formation of a defect Xi at which no satisfactory sealing function of the check valve 150 is ensured.
  • This misalignment shown in FIG. 2 can further lead to the problem shown in FIG. Due to the suction force S shown in FIG. 2, the check valve 150 can be completely and correctly pressed against the piston 105 or aspirated by the suction force F 2 that occurs, but this leads to a misalignment as indicated by X 2 , namely tilting of the check valve 150 Within the liner 140. In this case, it may be given that due to the tilting of the check valve 150, no movement of the check valve 150 takes place upward upon actuation of the metering pump and thus the fluid channel 142 is not released. When the dosing pump is actuated, no liquid emerges the dosing pump off.
  • FIG. 4 In the metering pump according to the invention.
  • the check valve is as shown in Figures 2 and 3, formed, and may for example have an inner recess 153, in which engages the spring element 160. Underside, d. H.
  • At the bottom of the check valve 150 are two sealing lips 151 and 152 ( Figure 4a) and a sealing lip 151 ( Figure 4b) attached.
  • the illustrated in Figure 4 two-dimensional image of the check valve 150 is understood to mean that the sealing lips represent concentric circles that can enclose the cylindrical recess of the piston 105 and can engage in this.
  • the exact functioning of these sealing elements in the form of sealing lips is explained in more detail in the following figures.
  • the or the sealing elements 151, 152 are formed normal to the bottom of the check valve 150.
  • FIG. 5 shows an embodiment of a metering pump or metering device according to the invention, which in principle to the embodiment as shown in Figure 2, leaning.
  • the metering pump or metering device according to FIG. 5 includes a check valve 150 as described in FIG. 4a.
  • FIG. 5 shows the open position of the metering pump, wherein the check valve 150 in the recess 141 of the liner 140 is pressurized of the liquid flowing from below through the recess 106 of the piston 105 (arrow Ai), the check valve 150 moves upward.
  • the liquid channel 142 is released from the check valve 150, so that liquid can flow through the liquid channel 142 upwards in the direction of the outlet (arrow A 2 ).
  • the check valve 150 has two sealing lips 151 and 152 formed on the bottom.
  • the liner 140 is not ideally arranged on the piston 105, so that the same misalignment as indicated in FIG. 2 results. With ⁇ the deviation of the axial alignment of the liner 140 is indicated for the axial alignment of the piston 105.
  • Figure 6 shows a position of the check valve 150 after the actuation operation and thus the delivery of liquid through the metering pump has ended.
  • the restoring spring force F i of the spring 160 By the restoring spring force F i of the spring 160, the check valve 150 is moved in the direction of the piston 105.
  • a negative pressure is generated in the pumping chamber which, on the one hand, ensures that liquid can again flow from the storage container into the pumping chamber via the valve 121.
  • the negative pressure continuing across the cylindrical volume 106 of the piston 105 also causes a restoring force F 2 (the so-called "suction force”) to act on the return valve 150.
  • the return valve despite existing manufacturing errors or possibly lower strength of the spring 160, is sucked onto the piston 105. Due to the elasticity of the sealing lips 151 and 152, this can lead to the sealing elements being deformed and, for example, folding over or buckling and thus pressed firmly against the piston 105.
  • FIG. 8 shows an analogous embodiment as Figure 5, also here the metering pump is shown in the open state.
  • the check valve 150 here comprises only a sealing lip 151, which, however, is designed in its longitudinal dimension (i.e., the height or the dimension in the direction of the piston 105), like the embodiment of the sealing valve 150 according to Figure 4a.
  • FIG. 8 shows another typical manufacturing error.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

La présente invention concerne une pompe doseuse pour un dispositif doseur, ladite pompe doseuse pouvant être reliée à un réservoir. Ladite pompe doseuse comporte une soupape de non-retour comportant des éléments d'étanchéité côté fond qui permettent une étanchéification interne de la pompe doseuse. La présente invention concerne en outre un dispositif doseur dans lequel la pompe doseuse selon l'invention est reliée à un réservoir.
EP17712480.7A 2016-03-24 2017-03-21 Pompe de dosage pour un appareil de dosage, ainsi qu'un appareil de dosage Active EP3433493B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RS20210050A RS61323B1 (sr) 2016-03-24 2017-03-21 Dozirna pumpa za dozirni uređaj kao i dozirni uređaj
PL17712480T PL3433493T3 (pl) 2016-03-24 2017-03-21 Pompka dozująca do dozownika oraz dozownik
HRP20210175TT HRP20210175T1 (hr) 2016-03-24 2021-02-02 Pumpa za doziranje za uređaj za doziranje, kao i uređaj za doziranje

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016204953.4A DE102016204953A1 (de) 2016-03-24 2016-03-24 Dosierpumpe für eine Dosiervorrichtung sowie Dosiervorrichtung
PCT/EP2017/056672 WO2017162655A1 (fr) 2016-03-24 2017-03-21 Pompe doseuse pour un dispositif doseur et dispositif doseur

Publications (2)

Publication Number Publication Date
EP3433493A1 true EP3433493A1 (fr) 2019-01-30
EP3433493B1 EP3433493B1 (fr) 2020-11-04

Family

ID=58387831

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17712480.7A Active EP3433493B1 (fr) 2016-03-24 2017-03-21 Pompe de dosage pour un appareil de dosage, ainsi qu'un appareil de dosage

Country Status (21)

Country Link
US (1) US10865779B2 (fr)
EP (1) EP3433493B1 (fr)
JP (2) JP7257950B2 (fr)
KR (3) KR20180123050A (fr)
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EP3433493B1 (fr) 2020-11-04
US20190101108A1 (en) 2019-04-04
ES2840823T3 (es) 2021-07-07
HRP20210175T1 (hr) 2021-03-19
CY1123725T1 (el) 2022-05-27
AU2017236368B2 (en) 2022-06-02
CN109416033A (zh) 2019-03-01
MX2018011516A (es) 2019-02-20
DK3433493T3 (da) 2021-01-25
KR20210107156A (ko) 2021-08-31
KR20220134045A (ko) 2022-10-05
US10865779B2 (en) 2020-12-15
HUE053054T2 (hu) 2021-06-28
JP2023036891A (ja) 2023-03-14
KR20180123050A (ko) 2018-11-14
RS61323B1 (sr) 2021-02-26
WO2017162655A1 (fr) 2017-09-28
DE102016204953A1 (de) 2017-09-28
PL3433493T3 (pl) 2021-05-04
JP7257950B2 (ja) 2023-04-14
LT3433493T (lt) 2021-03-10
CA3018015A1 (fr) 2017-09-28
JP2019511676A (ja) 2019-04-25
BR112018069248A2 (pt) 2019-01-22
AU2017236368A1 (en) 2018-10-04
CN109416033B (zh) 2020-05-15
PT3433493T (pt) 2020-12-21
KR102484986B1 (ko) 2023-01-06
JP7382483B2 (ja) 2023-11-16
RU2733152C1 (ru) 2020-09-29

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