EP3223934B1 - Vorrichtung zur aufbereitung und kühlung von giessereiformsand - Google Patents

Vorrichtung zur aufbereitung und kühlung von giessereiformsand Download PDF

Info

Publication number
EP3223934B1
EP3223934B1 EP15798096.2A EP15798096A EP3223934B1 EP 3223934 B1 EP3223934 B1 EP 3223934B1 EP 15798096 A EP15798096 A EP 15798096A EP 3223934 B1 EP3223934 B1 EP 3223934B1
Authority
EP
European Patent Office
Prior art keywords
mixing
mixer blade
mixer
container
blade
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.)
Active
Application number
EP15798096.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3223934A1 (de
Inventor
Andreas Seiler
Feng Li
Stefan Gerl
Paul Eirich
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.)
Maschinenfabrik Gustav Eirich GmbH and Co KG
Original Assignee
Maschinenfabrik Gustav Eirich GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Gustav Eirich GmbH and Co KG filed Critical Maschinenfabrik Gustav Eirich GmbH and Co KG
Priority to PL15798096T priority Critical patent/PL3223934T3/pl
Priority to SI201531160T priority patent/SI3223934T1/sl
Publication of EP3223934A1 publication Critical patent/EP3223934A1/de
Application granted granted Critical
Publication of EP3223934B1 publication Critical patent/EP3223934B1/de
Priority to HRP20200729TT priority patent/HRP20200729T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/2122—Hollow shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
    • B01F27/232—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
    • B01F27/232—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
    • B01F27/2322—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes with parallel axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/808—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers driven from the bottom of the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/53—Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F35/91—Heating or cooling systems using gas or liquid injected into the material, e.g. using liquefied carbon dioxide or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
    • B22C5/044—Devices having a vertical stirrer shaft in a fixed receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
    • B22C5/085—Cooling or drying the sand together with the castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90—Heating or cooling systems
    • B01F2035/98—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/02—Maintaining the aggregation state of the mixed materials

Definitions

  • the present invention relates to a device for cooling warm particle beds, in particular foundry sand.
  • Used foundry sand can be reused if the foundry sand is processed. To do this, it is necessary to cool down the used sand.
  • Such a device is for example from the DE 1 508 698 known.
  • the device described there consists of a mixing container and two vertically arranged drive shafts for a mixing tool.
  • the foundry mold sand to be cooled is introduced into the mixing container on one side and removed on the other side. While the foundry sand to be cooled passes through the device, the foundry sand is mixed using the mixing tools.
  • the mixing container has an opening for supplying air directly on the container base in the container wall.
  • the mixing container is integrated in a machine frame.
  • the mixing container itself has two mutually penetrating polygonal sections.
  • a corresponding rotating mixing tool is arranged in the center of each of the two sections.
  • the mixing blades attached to the shaft typically have plate-shaped blades that are moved on vertically arranged holders by radially extending rotating support arms.
  • the plate-shaped blades only have an effect on a circular path with a small extent, which is delimited essentially locally around the blade.
  • At the in the DE 1 508 698 described device penetrate the two sections, so that when controlling the two mixing tools, care must be taken that they do not collide with one another, which makes coordinated movement control necessary.
  • the cooling air introduced at the edge only blows flow channels through the sand bed in the immediate vicinity of the inlet openings and escapes upwards in a relatively short way without fulfilling the actual task of uniformly fluidizing the bed and cooling with high efficiency.
  • the center of the mix in the middle of the container is not at all reached by the air, since it only comes into contact with the air flowing out and up on an outer circular path in the immediate vicinity of the air inlet openings. Due to the substantially higher flow resistance of the bed in the radial direction towards the mixer shaft, the air flows vertically upwards after exiting the slot-shaped opening and following the lowest pressure loss.
  • the sand In the center of the mixing container, the sand is only slightly mixed by the rotating blades due to the prevailing low circumferential speed and speed differences, and slowly pushed radially outwards by the outward-pointing blade inclination in order to convey it into the cooling zone.
  • the residence time of the mixed material also shows great differences between the material located in the middle of the container and on the outer circumference.
  • the mixed material travels through the cooler from the addition opening located on the central axis to the opposite discharge opening in the area of the drive shafts without substantial contact with the supplied cooling air.
  • the locally emerging vertical flow channels in the wall area observe very high exit velocities from the bed of mix, which entrain a large amount of solid particles due to the high velocity and fluctuation of the flow.
  • the mixing tool has at least two mixing blades which are spaced apart in the vertical direction and at least one mixing blade has a mixer blade which is inclined with respect to the horizontal and which is preferably inclined downwards in the direction of rotation of the mixing tool.
  • the direction of rotation is predetermined by the drive device of the mixing tool.
  • the drive device of the mixing tool is therefore designed such that it drives the mixing tool in such a way that the mixing tools are inclined downwards in the direction of rotation.
  • the drive device can also be designed such that the direction of rotation of the mixing tool can be changed if necessary.
  • the use of mixing flights offset in the vertical direction leads to better mixing of the material to be mixed.
  • the mixing blades preferably extend in the horizontal direction from the drive shaft.
  • the inclination of the mixer blade takes place in such a way that the mixer blade, which is inclined downwards in the direction of rotation of the mixing tool, leads to the fact that the material to be mixed is lifted during mixing, as a result of which a cavity is formed directly behind the mixer blade within the material to be mixed, in which the air supplied can be distributed over the entire width and length of the mixer blade in the mix. Therefore that extends Mixer blade preferably over at least half the radius of the circle, which the outer section of the mixer blade describes when rotating. In one embodiment it is provided that the mixer blade extends from the container wall to the drive shaft.
  • the mixer blade extends in a preferred embodiment essentially up to the container wall.
  • the distance between the mixer blade and the container wall is preferably less than 100 mm and is best between 20 and 60 mm. This measure results in a layer-by-layer loosening along the tool profile in the sand bed. It is also possible for a preferably flexible attachment to be attached to the mixer blade, which projects radially over the mixer blade in the direction of the container wall and touches it, so that the attachment slides over the container wall during operation.
  • the container wall is inclined, so that the container cross section increases from the container bottom upwards.
  • Each mixing blade has a mixer blade, the distance between the mixer blade and the container wall being the same for both mixer blades. Due to the inclined container wall and the arrangement of the two mixer containers at different heights, this has the consequence that the mixer blade arranged further up must extend radially further outwards.
  • the mixer blade is designed in such a way that the material to be mixed is lifted upwards, so that a cavity is formed on the side of the mixer blade which is remote from the flow and serves as a flow channel for incoming air.
  • the air can now flow over the cavity between the drive shaft and the container wall and rise on the side facing away from the solid flow through the falling mix due to gravity behind the mixing tool, so that the mix is evenly flowed through to the center of the container by the inflowing air.
  • this constellation essentially prevents local inflow of air only in the area of the air outlet openings.
  • the drive for rotating the mixing tool is preferably designed such that the mixer blade has a peripheral speed at its radially outer end of between 2 and 75 m per second and preferably between 30 and 60 m per second.
  • At least one mixer blade of each mixing tool is arranged essentially on the bottom of the container.
  • the mixing container has at least two mixing sections, a mixing tool which can be rotated about a drive shaft being provided in each mixing section, each mixing tool preferably having at least two mixing blades which are spaced apart in the vertical direction.
  • the peripheral speed of the mixing blades and the direction of rotation in the individual mixing sections can be different.
  • each mixing tool has a mixer blade arranged essentially on the container bottom, the two mixing tools being so far apart from one another that the two mixer blades arranged on the container bottom do not touch in any position of the mixing tools.
  • the circular paths of the two mixer blades arranged on the tank bottom are tangent to one another.
  • the vertically higher mixer blades of different mixing tools are preferably arranged at different axial heights. They are designed so that their circular paths overlap. The different arrangement in the vertical direction prevents a collision from occurring.
  • the design described enables all tools to be designed close to the wall.
  • both mixing tools can be driven independently of one another at different speeds, without fear of a collision. This means that the mixing tools in the individual mixing tank sections can be assigned an optimum speed for the predominant process engineering task.
  • the tool speed of the mixing chamber section on the material inlet side can be optimized for the efficient mixing in of the water, while the speed of the tool in the subsequent mixing chamber section can be coordinated with the optimal flow of cooling air through the sand bed with reduced particle discharge, since here the stickiness of the particles due to the moisture reduction has already subsided.
  • the geometry of the mixing tool can also be designed differently in the different levels and mixing chamber sections, so that a corresponding optimization with regard to the flow through the sand bed is achieved while the solids discharge from the bed is minimized at the same time.
  • the air supply can have openings in the container wall through which air can be blown into the interior of the container.
  • the openings are preferably arranged at the same vertical height as the mixer blade which extends essentially to the container wall.
  • the air supply is supplied via the mixing tool itself, which for example has a hollow shaft.
  • the mixer blade can have corresponding air outlet openings on its side oriented opposite to the direction of rotation.
  • a combined air entry via openings in the container wall and via openings in the mixing tool would also be possible.
  • the peripheral speed of the mixer blade increases with increasing distance from the drive shaft, with the result that the mixing effect increases in the direction of the container wall. If the cross-section of the mixer blade remains the same, the mixing intensity will also increase as the effective diameter increases, since the peripheral speed increases with increasing radius.
  • This physical law can be countered by suitably designing the cross-sectional shape of the leaves from the inside out.
  • the mixer blade can have a width that increases in the radial direction.
  • the angle of inclination of the mixer blade to the horizontal can decrease in the radial direction.
  • the mixer blade can be flat or curved.
  • the angle of inclination with respect to the horizontal is preferably between 15 ° and 60 ° and particularly preferably between 20 ° and 50 °.
  • the mixer blade is designed as an angled profile, the inner angle being arranged opposite to the direction of rotation of the mixer blade and preferably being between 90 ° and 180 °.
  • the mixer blade can also be a substantially closed polygon profile, such as a rectangular or triangular profile, with corresponding air outlet openings being arranged on the side facing away from the flow, so that the cooling air can be introduced into the material to be mixed via the profile.
  • ploughshare-like attachments are attached to radially inner sections of the mixing blade to compensate for the lower peripheral speed, in order to increase the lifting and overflowing of the mixture on the one hand and to achieve an improved mixing effect on the other.
  • a falling sand curtain can be created which, due to its larger heat and mass transfer area, achieves a higher cooling capacity when it comes into contact with the outflowing air.
  • the mixer blade of the uppermost mixing blade is tilted in the opposite direction, so that the mix is directed downwards in order to counteract excessive swirling and, consequently, excessive discharge from the cooling device with the exhaust gas flow.
  • the distance between the air inlet openings arranged in the mixing container and the radially outer end of the mixer blade should be as small as possible in order to avoid that too much of the cooling air escapes upwards before reaching the mixer blade.
  • the average flow velocity of the cooling air in the outlet area of the air inlet openings should be between 15 and 35 m / s and particularly preferably between 20 and 30 m / s. Even if the angle of inclination of the container wall can in principle take any value between 0 and 45 °, the inclination is preferably between 15 and 35 ° and particularly preferably between 20 and 30 ° with respect to the vertical.
  • fixed, alternatively also spring-loaded, radially movable extensions made of, for example, plastic are located on the radially outer ends of the mixer blades, which rub against the container wall and thus establish direct contact between the air outlet opening and the side of the mixing blade facing away from the flow of solids ,
  • even more than two, namely three or even more mixing chamber sections are arranged one behind the other, through which the material to be mixed flows in succession.
  • the mixing and the homogeneous distribution of the water is essentially carried out in the first inlet-side chamber, while intensive ventilation of the sand bed and thereby evaporative cooling is achieved only in the second chamber.
  • the quality of the cooled sand can be corrected in the third or each subsequent chamber by adding water or other additives, for example.
  • the foundry sand should then have a residual moisture between 3.0 and 3.5% around the sand when leaving the device enveloping bentonite, which brings about the forming properties of the molding sand, and to enable direct use in the molding machine.
  • the mixing tool in the third mixing chamber section that is to say the section through which the material to be mixed flows last, has mixer blades which are inclined upwards in the direction of rotation, thereby ensuring that it becomes one in the last mixing chamber section shear stress on the mix.
  • the mixing chamber tool in the third mixing chamber section is designed with the direction of rotation opposite to the mixing chamber tool of the second mixing chamber section.
  • the local flow rate is significantly reduced by the measures according to the invention, with the result that fewer solid particles are entrained and carried away by the air flow.
  • a solids separator is arranged above the mixing tool.
  • the solid particles are separated in a vortex flow, for example in a rotary flow generated by a rotor.
  • the forced rotary flow creates a corresponding centrifugal field, which can be adjusted in strength by selecting the speed of rotation of the rotor. This gives you the option of setting the separation capacity and the size of the separating grain.
  • the particularly fine additive components contained in the gas flow can also be almost completely recycled.
  • the solution according to the invention achieves a very compact design of the cooler, with almost all solid particles being retained in the mixer at the same time.
  • FIG. 1 a first device according to the invention is shown in section.
  • the device 1 for processing and cooling foundry mold sand has a mixing container 2 which is arranged in a housing 3.
  • the mixing container 2 has two mixing sections, in the center of which a drive shaft 4 is arranged, which in turn each have a plurality of mixing blades with corresponding mixer blades.
  • the device 1 has an inlet 5 and an outlet 5 ', via which hot foundry sand can be introduced into the mixing container 2, for example by means of a conveyor belt 6, or the processed sand can be discharged from the mixing container 2 again.
  • a number of cooling air openings 7 are introduced in the inclined container wall 2, via which cooling air can be introduced into the mixing container 2.
  • the two drive shafts 4 each have mixing blades near the ground, which extend in opposite directions and on each of which a mixer blade 8 is mounted.
  • the two drive shafts 4 are arranged at a distance from one another in such a way that the mixer blades 8, which are arranged near the ground, cannot collide with one another in any rotational position.
  • further pairs of mixing blades are arranged, which are also each equipped with corresponding mixer blades.
  • all mixer blades are inclined downwards, so that when the drive shaft is rotated in the intended direction, the foundry mold sand located in the mixing container 2 is raised and flows over the inclined mixer blade surface.
  • the mixer blades of the second and third levels are arranged at a height which corresponds to the vertical height of the air inlet openings 7 in the container wall 2.
  • the mixer blades of levels 2 and 3 are arranged so that they extend almost to the air inlet openings 7.
  • the two drive shafts 4 are driven by means of the drive motors 9.
  • a solids separator 11 is arranged in the cover of the housing 3 and consists of a wheel provided with lamellae, which wheel can be rotated with the aid of the drive motor 10.
  • the suction of the cooling air supplied via the air inlet openings 7 then takes place via the spaces between the lamellae of the solid matter separator 11.
  • the driven wheel of the solid matter separator 11 generates a vortex flow in which the solids contained in the air to be extracted are separated and fall back into the mixing container ,
  • FIG 2 a schematic sectional view of an alternative embodiment of the invention is shown.
  • the cooling air is supplied once via a drive shaft 4 designed as a hollow shaft, in which air is fed into the duct 15 and via the duct into corresponding openings within the mixer blades 8, 8 ′, 8 ′′ and 8 ′′ ′′ by means of the feed 12 the Flow the mix.
  • air can be brought into the housing via the air supply 13 and into the mixture via the air inlet openings 7. It can be clearly seen in this embodiment that the mixed blades of the upper levels have a longer radial extension than the mixed blades of the lower level.
  • the mixer blades 8, 8 ′, 8 ′′ and 8 ′′ ′′ essentially extend as far as the container wall. However, in order to avoid damage to the mixer blades, a small gap must remain.
  • the mixer blades have an extension 14 can have made of plastic, which can also be pressed with the help of springs on the container wall to reduce the proportion of the cooling air supply that flows directly vertically upwards.
  • ploughshare-like attachments 19 are provided on the mixer blades.
  • Figure 4 shows a cross-sectional view through a mixer blade 20, which here consists of a single inclined surface. Behind the mixer blade, when the mixer blade 20 moves, a zone is formed which is essentially kept free of the mix, into which the cooling air introduced into the mixing container through the air supply openings 7 can flow radially inwards along the mixer blades.
  • the contour of the air outlet opening 7 is ideally selected so that, in combination with the geometry of the mixer blade, the most uniform and long-lasting air inflow into the zone behind the mixer blade which is kept free from the material to be mixed can take place.
  • FIG. 5 A cross-sectional view of a second embodiment of a mixer blade 21 is shown.
  • the mixer blade consists of an inclined surface and an angled, essentially horizontal surface.
  • FIG 6 a cross section through a third embodiment of a mixer blade 2 is shown.
  • an inclined surface is provided, which essentially adjoins in one direction vertically extending section and in the other direction an opposite inclined section.
  • FIG 7 a cross section through a further embodiment of a mixer blade 23 is shown.
  • the mixer blade 23 again has an inclined surface. It is mounted here on an essentially tubular element, through which cooling air can likewise be introduced into the mixing container.
  • FIG 8 an embodiment is shown as an example, in which different mixer blades 24 to 26 are mounted on the drive shaft in three different planes.
  • the mixer blade arranged in the lowest level has a downwardly inclined blade surface and a section running essentially perpendicularly to it.
  • a mixer blade 25 with a cross section is used, which forms a kind of cavity through which cooling air can be transported radially outward from the drive shaft.
  • a mixer blade 26 is used, which is inclined upwards in order to prevent the mixed material from being whirled up too strongly.
  • other geometries are possible for the design of the mixer blade.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Mold Materials And Core Materials (AREA)
  • Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Accessories For Mixers (AREA)
EP15798096.2A 2014-11-28 2015-11-20 Vorrichtung zur aufbereitung und kühlung von giessereiformsand Active EP3223934B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL15798096T PL3223934T3 (pl) 2014-11-28 2015-11-20 Urządzenie do przygotowania i chłodzenia odlewniczego piasku formierskiego
SI201531160T SI3223934T1 (sl) 2014-11-28 2015-11-20 Naprava za obdelavo in hlajenje livarskega formarskega peska
HRP20200729TT HRP20200729T1 (hr) 2014-11-28 2020-05-06 Uređaj za obradu i hlađenje ljevaoničkog pijeska

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014117509.3A DE102014117509A1 (de) 2014-11-28 2014-11-28 Vorrichtung zur Aufbereitung und Kühlung von Gießereiformsand
PCT/EP2015/077278 WO2016083270A1 (de) 2014-11-28 2015-11-20 VORRICHTUNG ZUR AUFBEREITUNG UND KÜHLUNG VON GIEßEREIFORMSAND

Publications (2)

Publication Number Publication Date
EP3223934A1 EP3223934A1 (de) 2017-10-04
EP3223934B1 true EP3223934B1 (de) 2020-02-26

Family

ID=54510588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15798096.2A Active EP3223934B1 (de) 2014-11-28 2015-11-20 Vorrichtung zur aufbereitung und kühlung von giessereiformsand

Country Status (19)

Country Link
US (1) US10464033B2 (sl)
EP (1) EP3223934B1 (sl)
JP (1) JP6648122B2 (sl)
KR (1) KR102419659B1 (sl)
CN (2) CN204770462U (sl)
BR (1) BR112017008058B1 (sl)
CA (1) CA2964048C (sl)
DE (1) DE102014117509A1 (sl)
ES (1) ES2787374T3 (sl)
HR (1) HRP20200729T1 (sl)
MX (1) MX2017005854A (sl)
PL (1) PL3223934T3 (sl)
PT (1) PT3223934T (sl)
RU (1) RU2675559C2 (sl)
SI (1) SI3223934T1 (sl)
TW (1) TWI653109B (sl)
UA (1) UA121487C2 (sl)
WO (1) WO2016083270A1 (sl)
ZA (1) ZA201702860B (sl)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107999697A (zh) * 2018-01-23 2018-05-08 江西力天机械有限公司 一种双臂树脂砂混砂机
CN108211846A (zh) * 2018-01-26 2018-06-29 安徽省鸣新材料科技有限公司 一种石墨烯泡沫铝复合搅拌桨
CN111888965B (zh) * 2020-09-29 2021-03-12 安徽尚成建设工程有限公司 基于气流浮动的连续环流式搅拌桨及彩砂混砂机构
CN115069008A (zh) * 2022-07-27 2022-09-20 山东科技职业学院 一种水质净化装置
CN116674214B (zh) * 2023-05-21 2023-11-24 江苏万恒铸业有限公司 带有筛分功能的铸钢件铸造废料回收装置
CN117733065B (zh) * 2023-10-26 2024-05-31 连云港赣榆腾飞机械铸造有限公司 一种铸造覆膜砂回收再生装置及其方法

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050795A (en) 1960-05-16 1962-08-28 Dietert Co Harry W Continuous type sand mixer
US3406950A (en) 1965-10-23 1968-10-22 Nat Eng Co Apparatus for conditioning material
US3456906A (en) * 1966-05-05 1969-07-22 Nat Eng Co Cooling and conditioning unit for granular material
DE1558105C3 (de) * 1967-03-10 1975-12-04 Dietmar Prof. Dr.-Ing. 5100 Aachen Boenisch Verfahren und Vorrichtung zum Mischen von Formstoffen
AT310426B (de) 1968-07-20 1973-09-25 Dierks & Soehne Maschine zum Mischen und Aufbereiten von pulverigen, körnigen oder kleinstückigen Stoffen, insbesondere Kunststoffen
GB1431193A (en) 1973-04-24 1976-04-07 Fordath Ltd Method and apparatus for mixing foundry materials
CH581496A5 (sl) * 1974-08-16 1976-11-15 Fischer Ag Georg
DE2952403C2 (de) * 1979-12-27 1984-08-23 Alfelder Maschinen- und Modell-Fabrik Künkel, Wagner & Co KG, 3220 Alfeld Verfahren und Vorrichtung zum Aufbereiten, insb. Kühlen und Mischen von Formsand
DE8030844U1 (de) * 1980-11-18 1982-06-09 Rieger, Herbert, 7121 Ingersheim Behaelter mit ruehrwerk
DE8234900U1 (de) * 1981-12-18 1983-03-24 Lüber, Werner, Bazenheid Rotationsmischvorrichtung fuer granulare gueter, insbesondere kernsand
US5382002A (en) * 1993-10-08 1995-01-17 Evans; Marvin Apparatus for heat treating a particulate material
DK118393D0 (da) * 1993-10-21 1993-10-21 Skako As Blandemaskine
GB2303320B (en) * 1994-06-23 1998-03-04 Robert Ernest Charles Eady Centrifugal solids separator
DE19512593A1 (de) * 1995-04-04 1996-10-10 Eirich Maschf Gustav Verfahren und Vorrichtung zum Kühlen von Gießereisand
JPH10277698A (ja) 1997-04-04 1998-10-20 Sintokogio Ltd 回収鋳物砂の冷却装置
US5934803A (en) * 1997-10-30 1999-08-10 Physical Systems, Inc. Apparatus and method for mixing multi-part reaction materials under vacuum
JP4261658B2 (ja) * 1998-12-14 2009-04-30 株式会社大川原製作所 攪拌処理装置
RU2151020C1 (ru) * 1999-01-10 2000-06-20 Открытое акционерное общество "ГАЗ" Смеситель
DE19925720C1 (de) 1999-06-07 2000-11-02 Webac Ges Fuer Maschinenbau Mb Verfahren und Vorichtung zur Aufbereitung von Gießereisand
JP2002102668A (ja) 2000-10-02 2002-04-09 Kankyo Soken Kk 未利用有機物処理装置
RU34103U1 (ru) * 2003-06-10 2003-11-27 Открытое акционерное общество "Станкон" Смеситель для приготовления стержневых и формовочных смесей
KR101009071B1 (ko) * 2005-07-25 2011-01-18 도쿄 프린팅 잉크 엠에프지. 캄파니 리미티드 분산장치 및 분산방법, 분산체 제조방법
DE202007005577U1 (de) * 2007-04-18 2007-06-14 B. Strautmann & Söhne GmbH u. Co. KG Vorrichtung zum Mischen, Belüften und Trocknen von Rohstoffen
DE102008054842A1 (de) * 2008-12-17 2010-07-01 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Mischer
TWM375563U (en) 2009-11-10 2010-03-11 yu-sheng Xiao Wax-supply barrel
RU2478020C2 (ru) * 2011-05-24 2013-03-27 Закрытое Акционерное Общество "Литаформ" Способ приготовления формовочной смеси и устройство для приготовления формовочной смеси
CN203507857U (zh) 2013-09-25 2014-04-02 云南龙谷生物科技有限公司 一种双轴桨叶无重力搅拌机

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2787374T3 (es) 2020-10-16
KR102419659B1 (ko) 2022-07-11
CA2964048A1 (en) 2016-06-02
BR112017008058B1 (pt) 2022-05-24
JP2017536974A (ja) 2017-12-14
CN107000035B (zh) 2020-10-16
US20180229196A1 (en) 2018-08-16
RU2675559C2 (ru) 2018-12-19
PL3223934T3 (pl) 2020-08-24
WO2016083270A1 (de) 2016-06-02
CN204770462U (zh) 2015-11-18
JP6648122B2 (ja) 2020-02-14
RU2017113735A3 (sl) 2018-11-15
CN107000035A (zh) 2017-08-01
TWI653109B (zh) 2019-03-11
HRP20200729T1 (hr) 2020-07-24
BR112017008058A2 (pt) 2017-12-26
CA2964048C (en) 2021-03-16
TW201618872A (zh) 2016-06-01
SI3223934T1 (sl) 2020-07-31
RU2017113735A (ru) 2018-10-23
EP3223934A1 (de) 2017-10-04
PT3223934T (pt) 2020-05-18
ZA201702860B (en) 2018-09-26
DE102014117509A1 (de) 2016-06-02
UA121487C2 (uk) 2020-06-10
MX2017005854A (es) 2017-06-27
KR20170088845A (ko) 2017-08-02
US10464033B2 (en) 2019-11-05

Similar Documents

Publication Publication Date Title
EP3223934B1 (de) Vorrichtung zur aufbereitung und kühlung von giessereiformsand
EP2632599B1 (de) Rührwerkskugelmühle
DE3337830C2 (sl)
EP2736655B1 (de) Kompakte lackieranlage
EP2637790B1 (de) Verfahren zur zerkleinerung von mahlgut und wälzmühle
EP3486591B1 (de) Wirbelschichtverdampfungstrockner
EP2351616A1 (de) Medienschüttelvorrichtung zur verarbeitung von pulver
EP3274112B1 (de) Formsandkühler
EP0634219A1 (de) Verfahren und Einrichtung zum Zerkleinern von Material unterschiedlicher Körnung
WO2018072870A1 (de) Vorrichtung zur trocknung von granulatkörnern
EP3555541A1 (de) Vorrichtung zur trocknung von granulatkörnern
DE102016106588B4 (de) Sichter
EP2981351A1 (de) Fluidisierungsapparat
EP1110615B1 (de) Wirbelstrommühle
EP0484758B1 (de) Vorrichtung zur Materialdispergierung
DE2716637C2 (sl)
DE19520325A1 (de) Sichtermühle
EP3849714B1 (de) Sichtrad mit segelflächenelementen und verfahren zum sichten mit einem solchen sichtrad
DE437896C (de) Windsichter
DE2161030A1 (de) Einrichtung zum kontinuierlichen kuehlen von gebrauchtem formsand fuer giessereien
DE102016107256B4 (de) Vorrichtung und Verfahren zum Trennen von Aufgabegut in Feingut und Grobgut
EP3620229A1 (de) Vorrichtung und verfahren zur änderung von schütteigenschaften
DE1141517B (de) Vorrichtung zum Zerkleinern, Mischen und Homogenisieren von Stoffen sowie zur Durchfuehrung mechano-chemischer Reaktionen
DE831931C (de) Verfahren und Vorrichtung zum Behandeln von Schuettguetern, insbesondere Getreide, durch Ausscheiden von Bestandteilen
DE1194233B (de) Vorrichtung zum Sichten von Gut unterschied-licher Korngroesse oder Wichte

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170526

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20180927

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20191122

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1236964

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200315

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502015011890

Country of ref document: DE

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER AND PEDRAZZINI AG, CH

REG Reference to a national code

Ref country code: HR

Ref legal event code: TUEP

Ref document number: P20200729T

Country of ref document: HR

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 3223934

Country of ref document: PT

Date of ref document: 20200518

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20200508

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20200226

REG Reference to a national code

Ref country code: HR

Ref legal event code: T1PR

Ref document number: P20200729

Country of ref document: HR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200526

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200626

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200527

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2787374

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20201016

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502015011890

Country of ref document: DE

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20200729

Country of ref document: HR

Payment date: 20201117

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20201127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20201120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201120

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20201130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201120

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502015011890

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: B01F0003180000

Ipc: B01F0023600000

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201120

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20200729

Country of ref document: HR

Payment date: 20211117

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20200729

Country of ref document: HR

Payment date: 20221114

Year of fee payment: 8

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20200729

Country of ref document: HR

Payment date: 20231109

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20231120

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20231117

Year of fee payment: 9

Ref country code: SI

Payment date: 20231109

Year of fee payment: 9

Ref country code: SE

Payment date: 20231120

Year of fee payment: 9

Ref country code: RO

Payment date: 20231115

Year of fee payment: 9

Ref country code: PT

Payment date: 20231110

Year of fee payment: 9

Ref country code: NO

Payment date: 20231124

Year of fee payment: 9

Ref country code: IT

Payment date: 20231124

Year of fee payment: 9

Ref country code: HR

Payment date: 20231109

Year of fee payment: 9

Ref country code: FR

Payment date: 20231120

Year of fee payment: 9

Ref country code: DE

Payment date: 20231127

Year of fee payment: 9

Ref country code: CZ

Payment date: 20231110

Year of fee payment: 9

Ref country code: CH

Payment date: 20231201

Year of fee payment: 9

Ref country code: AT

Payment date: 20231121

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20231019

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240129

Year of fee payment: 9