EP1468742A1 - Centrifugeuse à poussoir avec plusieur étages - Google Patents

Centrifugeuse à poussoir avec plusieur étages Download PDF

Info

Publication number
EP1468742A1
EP1468742A1 EP04405165A EP04405165A EP1468742A1 EP 1468742 A1 EP1468742 A1 EP 1468742A1 EP 04405165 A EP04405165 A EP 04405165A EP 04405165 A EP04405165 A EP 04405165A EP 1468742 A1 EP1468742 A1 EP 1468742A1
Authority
EP
European Patent Office
Prior art keywords
stage
acceleration
mixture
funnel
drum
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
EP04405165A
Other languages
German (de)
English (en)
Other versions
EP1468742B1 (fr
Inventor
Harald Dr. Reinach
Roy Geiger
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.)
Ferrum AG
Original Assignee
Ferrum AG
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 Ferrum AG filed Critical Ferrum AG
Priority to EP04405165.4A priority Critical patent/EP1468742B1/fr
Publication of EP1468742A1 publication Critical patent/EP1468742A1/fr
Application granted granted Critical
Publication of EP1468742B1 publication Critical patent/EP1468742B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/06—Arrangement of distributors or collectors in centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges

Definitions

  • the invention relates to a multi-stage pusher centrifuge according to the preamble of independent claim 1.
  • Centrifuges for drying moist substances or moist substance mixtures Centrifuges in a variety of embodiments are widely used and become used in various fields. So come for example to Drying of high purity pharmaceutical discontinuous products Centrifuges, such as peeler centrifuges, are preferred for use, in particular then, when continuously separating large quantities of a solid-liquid mixture to be used, continuously operating pusher centrifuges advantageous become. Depending on the requirement, one or more stages are involved Pusher centrifuges, as well as so-called double-thrust centrifuges used.
  • a solid-liquid mixture for example a suspension or a moist salt or salt mixture
  • a mixture distributor one quickly rotating drum, which is designed as a filter, fed, so that on reason the centrifugal forces exerted the liquid phase through the filter screen is deposited while inside the drum wall, a solid cake becomes.
  • the rotating drum in the rotating drum is a substantially disc-shaped, synchronously arranged with rotating moving floor, depending on the number of Sieve either the sliding floor or a sieve in the axial direction in the Drum oscillates with a certain amplitude, leaving part of the dried Solid cake is pushed out at one end of the drum.
  • the multi-stage pusher centrifuges known from the prior art are in usually continuous filter centrifuges.
  • the multi-stage filter centrifuge consists of an outer sieve drum and at least one in the outer Screening drum arranged screening stage, which is also designed as a screening drum.
  • a plurality of screening stages can be arranged concentrically in one another, so that two, three and multi-stage pusher centrifuges are feasible, with all screening stages be driven very quickly synchronously about a common axis of rotation.
  • One too separating solid-liquid mixture passes continuously in the operating state Fixed inlet pipe arranged in a in the innermost screening stage, also synchronously with rotating, mixture distributor and is on the innermost Sieve level evenly distributed over the entire screen circumference. Most of the Liquid is already centrifuged off here and it forms a solid cake.
  • the innermost stage which is also referred to as the first stage, in addition to the rotation movement around the Rotary axis of an oscillatory motion in the direction of the axis of rotation.
  • These Oscillatory motion is, for example, hydraulically via a thrust piston Reversing mechanism generated.
  • the solid cake is in Ring sections, corresponding to the stroke length of the oscillation, from the first to pushed second stage and leaves the pusher centrifuge finally over a Outlet.
  • the solid cake is in the sieve drum continuously with the addition of washing liquid on the solid cake washed.
  • a well-known two-stage pusher centrifuge after the previously described Principle operates, is described in detail, for example, in DT 25 42 916 A1.
  • the first stage i. the innerst sieve essentially for the pre-dewatering of the mixture, as well as for Formation of a solids cake, while the outer screen drum mainly as Drying stage is used.
  • Pusher centrifuges in particular for highly abrasive products, such as e.g. coal and rock phosphate, the special anti-wear measures, such as wear-resistant sieves, require.
  • special designs for intensive Washing processes and for carrying out special washing procedures, such as For example, the countercurrent washing in nitrocellulose, are from the prior Technique known.
  • gas-tight versions of multi-stage pusher centrifuges for Operation under protective gas atmosphere are used.
  • the object of the invention is therefore an improved multi-stage To propose pusher centrifuge, which are known from the prior art Disadvantages largely avoided.
  • a multistage pusher centrifuge is used to separate a Mixture proposed in a solid cake and in a liquid phase.
  • the multi-stage pusher centrifuge comprises an outer rotatable about a rotation axis Screening drum and at least one arranged in the outer screen drum Siebcross, arranged in the screen drum mixture distributor with a Sliding floor device, either the screening stage or the Sliding bottom device is arranged back and forth along the axis of rotation, so that the solids cake is displaceable by means of the pusher bottom device.
  • the multistage pusher centrifuge comprises a feed device which the mixture can be introduced into a void via the mixture distributor, when moving the solids cake by the push floor device arises, wherein the push floor device has a pre-acceleration funnel comprising, essentially widening towards the feed device extends and the pre-acceleration funnel as Vorbeuggungssieb is designed.
  • the multi-stage pusher centrifuge according to the invention serves to separate one Mixture in a solid cake and in a liquid phase and comprises as essential components one about an axis of rotation about a drum axis rotatable outer screen drum, which is housed in a housing.
  • the Drum axis is operatively connected to a drum drive, so that the Drum through the drum drive in rapid rotation around the axis of rotation is displaceable.
  • Inside the outer screen drum is at least one screening stage arranged.
  • a mixture distributor with a Moving floor device provided, either the screening stage or the Sliding bottom device is arranged back and forth along the axis of rotation, so that the solids cake is displaceable by means of the pusher bottom device.
  • Both the outer screen drum and the screen stage have screen openings on, in a known manner with rapid rotation liquid phase from the Solid cake or of a mixture which on an inner peripheral surface of Can be applied level, by the centrifugal forces occurring externally discharged is.
  • the Screening drum and / or the screening stage in a conventional manner as a skeletal Support drum to be designed to form the corresponding screen surfaces with special filter sheets are lined at their periphery, i. the skeletal Support drum can, for example, with one or more filter screens with different or equal sized filter openings for the deposition of Liquid phase be configured.
  • the sliding floor device comprises a Pre-acceleration funnel, according to the invention as Vorbe instructungssieb is configured, wherein the pre-acceleration is substantially expanding extending toward the feeding device.
  • Vorbestructungssieb is configured, wherein the pre-acceleration is substantially expanding extending toward the feeding device.
  • Vorbe instructungssieb is configured, wherein the pre-acceleration is substantially expanding extending toward the feeding device.
  • Vorbe instructungstrichters formed as a ring area that with the Ring area of the deposited in the screening stage solid cake by an oscillation the push floor device or the screening stage in the sieve drum or in a further sieve level is displaceable.
  • the mixture distributor is preferably in a conventional manner Fastener coupled to the drum and therefore rotates in one special embodiment synchronous with the screen drum and the screening stage to the common axis of rotation.
  • the oscillatory motion leads, depending on the number the existing screening levels, either the screening level itself or the Push floor device off.
  • there is an oscillatory in the operating state Relative movement between the screening stage and the sliding floor device with Pre-acceleration.
  • the drive of the oscillatory movement takes place preferably via a push rod, wherein in a first half-period of oscillatory movement with the outer ring area at the screening stage deposited solid cake in ring sections whose width is determined by the stroke length of the Oscillation movement is determined, from the screening stage to the screening drum or to a another screening stage is pushed, and in a second half-period the oscillatory movement deposited on the outer edge of the drum Ring section of solid cake is pushed out of the sieve drum.
  • the second half-period of the oscillatory motion arises at the same time a void on the outer ring area in the screening stage, so that in the White space new mixture can be introduced.
  • the pre-acceleration funnel with respect to the Rotary axis has an opening angle which is smaller than 90 °
  • the flow velocity of the mixture compared to Speed in free fall targeted towards the peripheral surface of the screening stage adjustable so that the mixture in the region of the pre-acceleration funnel with increasing approach to the outer ring area both in the radial direction, and gradually gradable in the circumferential direction of the screen drum.
  • both an inlet funnel, whose function further down still extend will be explained in detail, as well as the pre-acceleration funnel in one predeterminable range preferably under a substantially constant Opening angle or conical under a constant pre-acceleration angle expanding towards the push floor device or to the feed device out.
  • the inlet funnel and / or the Vorbevantung funnel in a predetermined range but also one have curved course, wherein the opening angle of the inlet funnel and / or the pre-acceleration angle of the pre-acceleration hopper in the direction enlarged or reduced to the sliding floor device. That can in particular be advantageous if the inlet funnel or the pre-acceleration funnel, as will be described in more detail later, as a prefilter screen or as Pre-acceleration screen is designed for the pre-separation of liquid phase.
  • the pre-acceleration screen is as Two-stage filter with a coarse filter and a fine filter designed.
  • the mixture can thus be filtered in two stages in the area of the pre-acceleration screen become.
  • the design of the Vorbeschreibungssiebs as a two-stage filter has in particular the advantage that the fine filter by large and / or heavy Particles that are contained in the incoming mixture, mechanically not so strong is loaded, so that the fine filter, for example, very small pores for filtering of very small particles and in particular also of mechanical can be made of less resistant materials.
  • the mixture distributor a Collecting device is provided for discharging liquid phase, so that a part the liquid phase already before reaching the enormously fast rotating peripheral surface of the Sieve level is removable. This part of the liquid phase is then no longer accelerated to the full peripheral speed of the screening stage, resulting in a massive energy saving and relieving the components, in particular the rotating and / or oscillating components of multi-stage pusher centrifuge leads. As a result, even mixtures with enormously high Liquid content easily processable.
  • the pre-acceleration screen configured and arranged that the Vorbeuggungssieb by means of a rotary drive to a Rotary axis with a predetermined speed, regardless of the speed of the Screen drum, is rotatable.
  • suitable means for example in the form of computerized electronic systems to provide the rotary drive, for example, depending on suitable operating parameters of the multi-stage Pusher centrifuge to control and / or to regulate.
  • an inventive Multi-stage pusher centrifuge is in addition to the feed Inlet hopper for pre-acceleration of the incoming mixture provided.
  • the Mixture passes through the feed initially in an inlet funnel, the preferred in one embodiment, but not necessary, rotatably with the Mixture is connected, so that the inlet funnel synchronously with the Mixture distributor rotates.
  • the inlet funnel extends substantially extending axially to the pre-acceleration screen, so that through the Feed mixture fed directly into the inlet funnel.
  • the inlet funnel is designed and arranged so that the mixture during Leaving the inlet funnel is fed into the Vorbeuggungssieb.
  • the mixture is already in the feed hopper pre-accelerated to a predetermined rotational speed, so that the mixture already has a certain amount when it reaches the pre-acceleration screen Speed in the circumferential direction of the screening stage and so still total gentler on the maximum peripheral speed of the peripheral surface of Sieve level is accelerated.
  • the inlet funnel can also be used as a prefilter screen for pre-separation be formed of liquid phase from the mixture. It is preferred Collecting agent for collection and discharge of separated from prefilter screen Liquid phase provided.
  • a value of an opening angle of the inlet funnel and / or the value a pre-acceleration angle of the pre-acceleration funnel with respect to Rotary axis for example, between 0 ° and 45 °, in particular between 0 ° and 10 ° or between 10 ° and 45 °, in particular between 25 ° and 45 °, preferably between 15 ° and 35 °.
  • the Value of the opening angle and / or the pre-acceleration angle greater than 45 ° is.
  • the inlet funnel as a pre-filter for Pre-separation of liquid phase is formed, it may be of particular advantage be when the inlet funnel has a curved course and the Opening angle of the inlet funnel in the direction of the sliding floor device out enlarged or reduced. It is known that different products under otherwise identical operating conditions of the pusher centrifuge, for example in Dependence on the particle size and / or the viscosity and / or other Properties or parameters, such as the temperature of the mixture Different drainage are good.
  • the inlet funnel or the Prefilter filter has a curved course, wherein the opening angle of the Prefilter increased in the direction of the sliding floor device towards. That means, the Inlet funnel or the prefilter sieve expands towards the Moving floor device similar to the horn of a trumpet. This will be the Stripping force, with which the mixture is accelerated from the inlet funnel, with decreasing distance to the moving floor device disproportionately larger, so that the mixture, which is already relatively strongly drainable in the prefilter sieve and so that poor sliding properties in the prefilter shows faster, the prefilter sieve leave as, for example, in a substantially conical, with constant opening angle expanding prefilter screen.
  • Vorbeuggung funnel have a curved course, wherein the Pre-acceleration angle of the pre-acceleration funnel in the direction of Infeed device enlarged or reduced.
  • the prefilter sieve Of course as a two-stage sieve with a coarse sieve and a fine sieve be designed.
  • the advantages are apparent.
  • the first filter stage forms the Grobsieb, which contained in the mixture particles that are larger than that Retains filter openings of the coarse filter.
  • the fine sieve keeps correspondingly finer Particles back, while at least part of the liquid phase, as well as very small Particles that also need to be removed are directly dischargeable from the screening stage are.
  • the configuration of the prefilter screen as a two-stage screen has in particular the Advantage that the fine sieve by large and / or heavy particles, in the incoming mixture are included, is not mechanically stressed so much, so that the fine filter, for example, very small pores for filtering very small Particles may have and especially from mechanically little resistant materials can be made.
  • the inlet funnel and / or the pre-acceleration funnel as skeletal Be configured supporting body, for forming the prefilter and / or the Vorbeuggungssiebs may be equipped with special filter films, i. of the skeletal support body can, for example, with one or more filter screens, the possibly for the deposition in different stages of different sizes Filter openings may be equipped.
  • filter sieves are used as filter sieves or For example, screen plates in question.
  • the filter screens can be advantageous different way provided with filter openings of different sizes become.
  • the aforementioned screen plates can, inter alia punched, drilled, lasered, electron beam punched or water jet cut
  • other techniques come into question.
  • the sieves themselves Depending on the requirements, you can choose from different, in particular corrosion resistant materials, such as plastic, Composite materials or different steels such as 1.4462, 1.4539 or 2.4602 or made of other suitable materials.
  • the filter screens can wear with suitable layers be provided, for example, with hard chrome layers, tungsten carbide (WC), Ceramics or hardened differently.
  • the strength of the filter sheets is typically 0.2 mm to 5 mm, although significantly different sheet thicknesses possible are.
  • the inlet funnel can by a Drive shaft arranged rotatably and by means of a drive with a predeterminable Speed to be rotatable about the drive axis.
  • a drive shaft arranged rotatably and by means of a drive with a predeterminable Speed to be rotatable about the drive axis.
  • the rotational speed of the inlet funnel this is for example with a separate drive shaft rotatably connected and via the drive axle by means of a drive independent of the screening drum and / or independent of Vorbetestungssieb with a predetermined rotational frequency drivable.
  • suitable means may be provided to drive, for example, depending of the mixture to be processed, certain operating parameters of the multi-stage Pusher centrifuge, etc. to control and / or regulate.
  • This can be the inventive multi-stage pusher centrifuge and corresponding sensors for Measurement of relevant operating parameters include.
  • Fig. 1 shows in section in a schematic representation essential components a first embodiment of an inventive multi-stage Pusher centrifuge with pre-acceleration screen. It is in the drawings of For reasons of clarity, these applications are only examples two-stage pusher centrifuges shown schematically. It is understood that the Representation of two-stage pusher centrifuges is exemplary to understand and the Description, of course, also for more than two-stage pusher centrifuges in analogous manner applies and is transferable accordingly.
  • the inventive multi-stage pusher centrifuge which in the following total designated by the reference numeral 1, serves to separate a mixture 2 in a solid cake 3 and into a liquid phase 4 and comprises as essential Components one about a rotational axis 5 about a drum axis 51 rotatable outer screen drum 6, which is housed in a housing G.
  • the Drum axis 51 is connected to a drum drive 52 in operative connection, so that the Screen drum 6 through the drum drive 52 in rapid rotation about the axis of rotation 5 is displaceable.
  • Within the outer screen drum 6 is at least one screening stage 7 arranged.
  • a mixture distributor 8 with a Sliding floor device 9 is provided, wherein either the screening stage 7 or the Push floor device 9 along the axis of rotation 5 back and forth is arranged, so that the solid cake 3 by means of the moving floor device. 9 is displaceable.
  • Both the outer screen drum 6 and the screening stage 7 have while screen openings 61, 71, by the known manner with rapid rotation Liquid phase 4 from the solid cake 3 or from a mixture 2, which, as further is described in more detail below, on an inner peripheral surface 72 of the Sieblace 7 can be applied, due to the centrifugal forces discharged to the outside is.
  • the mixture distributor 8 with push floor device 9 arranged which allows continuously through the feed device 10th supplied mixture 2 on the inner peripheral surface 72 of the screening stage 7 through Introducing into a void 11, which is the displacement of the solid cake. 3 originated, to distribute.
  • the sliding floor device 9 comprises a Pre-acceleration funnel 12, which is configured as a pre-acceleration screen 12, wherein the Vorbeuggungssieb 12 is substantially conically widening in Direction extends to the feed device 10 back.
  • the pre-acceleration funnel 12 is designed as an annular region 92 such that with the ring portion 92 of deposited in the screening stage 7 solid cake 3 by an oscillation of the pusher bottom device 9 described in more detail below and / or the screening stage 7 in the screening drum 6 or in another not here illustrated screening stage 7 is displaceable.
  • the mixture distributor 8 is in the embodiment shown in Fig. 1 with the screen drum 6 rigidly coupled by fastening means 91 and therefore rotates synchronously with the screen drum 6 and the screening stage 7 about the axis of rotation 5. Die oscillatory motion, indicated by the double arrow in FIG. 1, performs in the example shown here, however, only the screening stage 7th Thus, in the Operating state an oscillatory relative movement between the oscillating Sieve stage 7 and the immovable in the axial direction moving floor device 9 with Pre-acceleration funnel 12.
  • the oscillatory movement of the screening stage 7 takes place preferably via a push rod 21, wherein in a first half-period of oscillatory motion with an outer ring area 92 of the screening stage 7 deposited solid cake 3 in ring sections whose width by the stroke length the oscillation movement of the screening stage 7 is determined, from the screening stage 7 to Moving drum 6 is pushed, and in a second half-period of the oscillatory Movement through the screening stage 7 on the outer edge of the screening drum. 6 Deposited ring section of solid cake 3 from the screening drum. 6 is pushed out. During the second half-period of the oscillatory At the same time movement creates the empty space 11 in the sieve stage 7, so that in the White space 11 new mixture can be introduced.
  • mixtures 2 with a very high content of Liquid phase 4 easy to process. In particular, so is also at high content on liquid phase 4 always a uniform distribution of the mixture to be dried 2 over the peripheral surface 72 of the screening stage 7 and the screening drum 6 guaranteed. In particular, even at very high concentrations of liquid phase 4 im Mixture 2 additional pre-drainage facilities, such as static thickeners, curved screens or hydrocyclones superfluous. It also can smallest in the mixture 2 contained Patrikel by the effect of pre-filtration much be separated more effectively from the solid cake 3.
  • the pre-acceleration screen 12 a Pre-acceleration angle ⁇ , which is smaller than 90 °, im Vorbeuggungssieb 12, the flow rate of the mixture 2 in comparison to the speed in free fall towards the peripheral surface 72 of the screening stage 7 selectively adjustable, so that the mixture 2 in the range of Vorbevantungstrichters 12 with increasing approach to the outer Ring portion 92 in both the radial direction and in the circumferential direction of the Screen drum 6 is gradable gradually. That is, the mixture 2 is in Area of Vorbeschreibungssiebs 12 in a particularly gentle way to and accelerated to a predetermined peripheral speed, then at Reaching the peripheral surface 72 finally the full rotational speed of Level 7 to reach.
  • the value of the pre-acceleration angle ⁇ of the pre-acceleration funnel 12, and the value of an opening angle ⁇ of a later to be described Einlauftrichters 16 may be in relation to the axis of rotation 5, for example, between 0 ° and 45 °, in particular between 0 ° and 10 ° or between 10 ° and 45 °, in particular between 25 ° and 45 °, preferably between 15 ° and 35 °.
  • the value of the Opening angle ⁇ and / or the pre-acceleration angle ⁇ is greater than 45 °.
  • Rotary axis 5 is a rather acute angle of advantage, with an optimal value of the corresponding opening angle ⁇ and / or the pre-acceleration angle ⁇ among other things, the value of the static friction angle of the mixture 2 to be dehydrated is determined.
  • FIG. 2 a further embodiment according to FIG. 1 is shown, wherein the Vorbeuggungssieb 12 as a two-stage filter with a coarse filter 121 and a Fine filter 122 is configured.
  • the mixture 2 can thereby in the range of Vorbevantungssiebs 12 are filtered in two stages.
  • the first filter stage forms the coarse filter 121, which contained in the mixture particles that are larger as the filter openings of the coarse filter 121 holds back, so in the void 11th can be introduced.
  • the fine filter 122 retains correspondingly finer particles that also the white space 11 and thus the solid cake 3 are fed, while at least part of the liquid phase 4, as well as very small particles, the must also be removed, directly through a sieve opening 61, 71 from the Screen drum 6 are discharged.
  • the embodiment of the pre-acceleration screen 12 As a two-stage filter has the particular advantage that the fine filter 122 by large and / or heavy particles which may be contained in the incoming mixture 2, is mechanically not so heavily loaded, so that the fine filter 122, for example can have very small pores for filtering very small particles and especially made of mechanically less resistant materials can be.
  • the pre-acceleration screen 12 as Two-stage filter can be formed and the pre-acceleration screen 12th deposited liquid phase 4 also according to the illustration to the right through the open side of the screen drum 6 can be discharged, for example, the Receiving device 13 according to the representation according to the outer ring area extends right into the screening stage 7, from where the Vorbeuggungssieb 12 in the Catching device 13 deposited liquid phase 4, for example, by appropriate, in Fig. 3, not shown devices is sucked.
  • Fig. 4 is a variant of an inventive multi-stage Pusher centrifuge 1 with separately drivable Vorbevantungssieb 12 shown.
  • the Vorbeatungssieb 12 is here designed and arranged that the Vorbeatungssieb 12 by means of a rotary drive 14 about an axis of rotation 15 is rotatable at a predetermined speed.
  • the rotation axis 15, as exemplified in Fig. 4, disposed within the push rod 21 and be driven independently of this by the rotary drive 14.
  • Suitable means for controlling and / or regulation of the rotational speed of the rotary drive 14 can suitable means, not shown here, be provided to the rotary drive 14th for example, depending on suitable operating parameters of the multi-stage Pusher centrifuge 1 or depending on the mixture to be processed or other factors to control and / or regulate.
  • the rotational frequency of the Vorbevantungstrichters 12 so be selected such that the pre-acceleration funnel 12 synchronously with the outer Screening drum 6 rotates, so that between the outer ring portion 92 and the Solid cake 3, which is deposited on the peripheral surface 72 of the screening stage 7, when Do not move any real movement with respect to the rotation around the Dreachse 5 is present during the return, ie in the phase of Osillationsmos in the the void 11 is charged with a new mixture 2, the Vorbevantung funnel 12, for example, rotates slower than the outer Sieve drum 6 or slower the screening stage 7.
  • Fig. 5 is schematically another embodiment of an inventive multi-stage pusher centrifuge 1 shown.
  • an inlet funnel 16 for pre-acceleration of the mixture 2 provided.
  • the mixture 2 passes through the feeder 10 initially in the inlet funnel 16, which is rotatably connected to the mixture manifold 8, so that the feed hopper 16 rotates synchronously with the mixture manifold 8.
  • the feed hopper 16 extends in a substantially axial direction and conically extending to the pre-acceleration screen 12, so that through the Feed device 10 supplied mixture 2 directly into the inlet funnel 16th arrives.
  • the inlet funnel 16 is designed and arranged such that the Mixture 2 when leaving the inlet funnel 16 in the pre-acceleration screen 12th can be fed.
  • the inlet funnel 16 in the direction of Vorbe instructungssieb 12 extends substantially conically widening and the inlet funnel 16 synchronously co-rotated, the mixture 2 is already in the inlet funnel 16 to a pre-accelerated predetermined speed, so that the mixture 2 at Arrives in Vorbevantungssieb 12 already a certain speed in Circumferential direction of the screening stage 7 and so overall even more gentle on the maximum peripheral speed of the circumferential surface 72 of the screening stage 7 is acceleratable.
  • FIGS. 5a and 5b an exemplary embodiment is shown schematically and by way of example a Vorbevantungstrichters 12 shown. It is in both pictures to Illustration each a pre-acceleration funnel 12 shown. But how the Reference numerals 12, 16 and 17 in Fig. 2b indicate that in Fig. 2b shown example of the geometry of a funnel on both the inlet funnel 16th as well as on the pre-acceleration funnel 12.
  • FIG. 5 a shows a pre-acceleration funnel 12 with an outer ring region 92 for the purpose of FIG Shifting a Festoffkuchens 3.
  • the outer ring portion 92 has a specifiable height a, depending on the mixture to be processed 2 and / or the Operating conditions under which the inventive pusher centrifuge 1 about 1% to 40% of the drum radius r, preferably about 5% to 10%, in particular 5% to 20% of the drum radius r.
  • the funnel 12, 16, 17 may be formed as a multi-stage funnel 12, 16, 17, the funnel 12, 16, 17 for pre-acceleration of the mixture 2 more, at different angles ⁇ 1 , ⁇ 2 may have mutually inclined partial surfaces, wherein the relative size of the partial surface and its inclination angle ⁇ 1 , ⁇ 2 may depend, for example, on the mixture 2 to be processed or on the operating parameters of the pusher centrifuge 1.
  • both the inlet funnel 16 and the pre-acceleration funnel 12 according to FIG. 5b can be designed as a multi-stage funnel.
  • the inlet funnel 16 as a prefilter 17 is designed for the pre-separation of liquid phase 4, it may be of special Be advantageous if the inlet funnel 16 has a curved course and the Opening angle ⁇ of the inlet funnel 16 as shown in FIGS. 5c and 5d schematically shown, in the direction of the sliding floor device 9 out increased or decreased. It is known that different mixtures 2 are the same Operating conditions of the pusher centrifuge 1, for example, depending on the Grain size and / or viscosity and / or other properties or Parameter, such as the temperature of the mixture 2, different good are drainable.
  • the inlet funnel 16 or the prefilter 17 has a curved course, wherein the Opening angle ⁇ of the prefilter screen 17 in the direction of the sliding floor device 9 out increased.
  • Such a special embodiment of an inlet funnel 16 is in Fig. 5c shown schematically. That is, the inlet funnel 16 or the Vorfiltersieb 17 expands in the direction of the sliding floor device 9 similar to the horn of a trumpet.
  • the output force, with the mixture 2 off the inlet funnel 16 is accelerated, with decreasing distance to Schubêtvorraum 9 disproportionately larger, so that the mixture 2, the already in the prefilter 17 is relatively strong drainable and thus poor Sliding properties in the prefilter 17 shows faster exit the prefilter 17 can, for example, in a substantially conical, with a constant Opening angle ⁇ expanding prefilter sieve 17.
  • the Vorbeuggungsstrichter 12 and the pre-acceleration screen 12 a have curved course, wherein the pre-acceleration angle ⁇ of the Vorbevantungstrichters 12 toward the feed device 10 out enlarged or reduced.
  • the inlet funnel 16, as shown in Fig. 6, as a prefilter 17 may be formed for the pre-separation of liquid phase 4 from the mixture 2.
  • collecting means 18 are preferred for the collection and derivation of Vorfiltersieb 17 deposited liquid phase 4 is provided.
  • It can the Liquid phase 4, for example, through openings in the moving floor device 9 in derived from the solid cake 3 area of the screening stage 7 and then are discharged through the screen openings 61, 71 from the screen drum 6, or the Liquid phase 4 can analogously to the embodiment shown in FIG. 3 directly be removed from the screening drum, so that this part of the liquid phase is not more on the peripheral speed of the screening stage 7 or the screening drum 6 is accelerated.
  • the inlet funnel 16 is configured as a prefilter 17 and by means of one or more fastening supports 22 on the screening drum 6 arranged.
  • the mounting posts 22 are preferably in the form of suitable formed spokes 22, thin rods 22 or tubes 22, so that in Operating state of the solid cake 3 easily from the screening stage 7 or from the Sieve drum 6 is removable.
  • the prefilter sieve 17 by means of a or a plurality of mounting posts 22 also be arranged on a screening stage 7 or even at several screening stages 7 or at a screening stage 7 and at the screening drum 6 be arranged, the corresponding drums preferably no Perform oscillatory relative movement against each other.
  • the rotational frequency the Vorbe instructungstrichters 12 are chosen so that the Vorbevantung funnel 12 rotates synchronously with the screening stage 7, so that between the outer ring portion 92 and the solid cake 3, which on the Peripheral surface of the screening stage 7 is deposited, when moving no Relative movement with respect to the rotation about the axis of rotation 5 is present during the Return, ie in the phase of the Osillationsmos in the space 11 with new mixture 2, the pre-acceleration hopper 12, for example rotates slower than the screening stage 7.
  • FIG. 6b is finally an embodiment of FIG. 6a with a Blind bottom 911 shown schematically, wherein the pre-acceleration screen 12 of the For clarity, not shown as a two-stage screen.
  • both the pre-acceleration screen 12 and the prefilter screen 17 can be used be designed as a one, two or multi-stage screen.
  • the embodiment according to FIG. 6b has a blank bottom 911 designed outer ring portion 92, which is synchronous with the outer Screen drum 6 rotates, but from the pre-acceleration funnel 12 with respect to Rotational movement is decoupled, so that the pre-acceleration funnel 12, ie the pre-acceleration screen 12 at a different speed than the dummy bottom 911 is rotatable about the axis of rotation 5.
  • a blank bottom 911 designed outer ring portion 92 which is synchronous with the outer Screen drum 6 rotates, but from the pre-acceleration funnel 12 with respect to Rotational movement is decoupled, so that the pre-acceleration funnel 12, ie the pre-acceleration screen 12 at a different speed than the dummy bottom 911 is rotatable about the axis of rotation 5.
  • FIG. 6b has a blank bottom 911 designed outer ring portion 92, which is synchronous with the outer Screen drum 6 rotates, but from the pre-acceleration funnel 12 with respect to Rotational movement is decoupled, so
  • the blind bottom 911 via at least one fastening strut 912 rotatably with the be connected to the outer screen drum 6, wherein the fastening strut 912 through a suitably placed opening 70 is guided in the screening stage 7, so that the Fixing strut 912 is decoupled from the oscillation movement of the screening stage 7.
  • the embodiment according to FIG. 6b is also at higher stages as two-stage pusher centrifuges 1 analog transferable.
  • the pre-acceleration funnel 12 completely independent of the speed of outer sieve drum 6 with a mixture to be processed on the second tunable rotational frequency drivable and on the other hand rotates the blind floor 911, which transports the solid cake 3 in the axial direction with the same Speed as the sieve drum 6 and the screening stage 7, so that between the blind floor 911 and screening stage 7 with respect to the rotation about the rotation axis 5 no Relative movement takes place.
  • Rotation speed for example, depending on a current Operating state of the pusher centrifuge 1, as already described above, variable be.
  • the prefilter screen 17 can of course also be used designed as a two-stage screen with a coarse filter 171 and a fine screen 172 be.
  • the first filter stage forms the coarse sieve 171, which contained in the mixture 2 Particles that are larger than the filter openings of the coarse sieve 171 withholds.
  • the Fine screen 172 retains correspondingly finer particles, while at least a portion the liquid phase 4, as well as very small particles, which also have to be removed, from the screening stage 7 are directly drained.
  • the embodiment of the prefilter screen 17 as Two-stage sieve has the particular advantage that the fine sieve 172 by large and / or heavy particles which may be contained in the incoming mixture 2, mechanically not so heavily loaded, so that the fine screen 172, for example can have very small pores for filtering very small particles and especially made of mechanically less resistant materials can be.
  • the introduced mixture through which arranged on the pusher bottom device Vorbeuggungssieb to a predetermined peripheral speed be pre-accelerated, allowing the mixture when hitting the screen drum not in the shortest possible time from a peripheral speed near zero to full Circumferential speed of the inner screening stage is accelerated.
  • This is under other grain fraction avoidable, so that in particular also substances that particularly sensitive to abrupt changes in centrifugal acceleration react, be processed in compliance with the highest quality standards.

Landscapes

  • Centrifugal Separators (AREA)
EP04405165.4A 2003-04-16 2004-03-18 Centrifugeuse à poussoir avec plusieur étages Expired - Lifetime EP1468742B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04405165.4A EP1468742B1 (fr) 2003-04-16 2004-03-18 Centrifugeuse à poussoir avec plusieur étages

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03405273 2003-04-16
EP03405273 2003-04-16
EP04405165.4A EP1468742B1 (fr) 2003-04-16 2004-03-18 Centrifugeuse à poussoir avec plusieur étages

Publications (2)

Publication Number Publication Date
EP1468742A1 true EP1468742A1 (fr) 2004-10-20
EP1468742B1 EP1468742B1 (fr) 2016-11-23

Family

ID=32910144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04405165.4A Expired - Lifetime EP1468742B1 (fr) 2003-04-16 2004-03-18 Centrifugeuse à poussoir avec plusieur étages

Country Status (1)

Country Link
EP (1) EP1468742B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2633917A2 (fr) 2012-03-02 2013-09-04 Andritz KMPT GmbH Centrifugeuse à poussoir et procédé de fonctionnement dýune centrifugeuse à poussoir
US20150238977A1 (en) * 2014-02-26 2015-08-27 Ferrum Ag Centrifuge and method of loading a centrifuge
EP2946835A1 (fr) 2014-05-22 2015-11-25 Ferrum AG Centrifugeuse, ainsi que dispositif de pré-accélération pour une centrifugeuse
CN106345618A (zh) * 2016-08-29 2017-01-25 成都科创诺商贸有限公司 一种多级分离的离心机

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720981A (en) * 1951-11-27 1955-10-18 Hercules Powder Co Ltd Centrifuge
GB918386A (en) * 1959-05-22 1963-02-13 Braunschweigische Maschb Ansta Improvements in continuous acting sieve centrifuges
US3136721A (en) * 1961-03-31 1964-06-09 Pennsalt Chemicals Corp Centrifugal solids dryer
US3268083A (en) * 1962-06-04 1966-08-23 Escher Wyss Ag Push-type centrifuge
US3368684A (en) * 1966-08-23 1968-02-13 Escher Wyss Ltd Continuously operating centrifuging device
DE2165719A1 (de) * 1971-12-30 1973-07-05 Krauss Maffei Ag Zentrifuge
US3831764A (en) * 1973-06-05 1974-08-27 Pennwalt Corp Pusher-type centrifuge
GB1518239A (en) * 1975-12-12 1978-07-19 Diedrich & Cie De Push type filtering centrifuge
EP0710504A1 (fr) * 1994-11-01 1996-05-08 Thomas Spyra Centrifugeuse à poussoir

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720981A (en) * 1951-11-27 1955-10-18 Hercules Powder Co Ltd Centrifuge
GB918386A (en) * 1959-05-22 1963-02-13 Braunschweigische Maschb Ansta Improvements in continuous acting sieve centrifuges
US3136721A (en) * 1961-03-31 1964-06-09 Pennsalt Chemicals Corp Centrifugal solids dryer
US3268083A (en) * 1962-06-04 1966-08-23 Escher Wyss Ag Push-type centrifuge
US3368684A (en) * 1966-08-23 1968-02-13 Escher Wyss Ltd Continuously operating centrifuging device
DE2165719A1 (de) * 1971-12-30 1973-07-05 Krauss Maffei Ag Zentrifuge
US3831764A (en) * 1973-06-05 1974-08-27 Pennwalt Corp Pusher-type centrifuge
GB1518239A (en) * 1975-12-12 1978-07-19 Diedrich & Cie De Push type filtering centrifuge
EP0710504A1 (fr) * 1994-11-01 1996-05-08 Thomas Spyra Centrifugeuse à poussoir

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2633917A2 (fr) 2012-03-02 2013-09-04 Andritz KMPT GmbH Centrifugeuse à poussoir et procédé de fonctionnement dýune centrifugeuse à poussoir
EP2633918A2 (fr) 2012-03-02 2013-09-04 Andritz KMPT GmbH Centrifugeuse à poussoir et procédé de fonctionnement dýune centrifugeuse à poussoir
DE102012101787A1 (de) 2012-03-02 2013-09-05 Andritz Kmpt Gmbh Schubzentrifuge und Verfahren zum Betreiben einer Schubzentrifuge
US20150238977A1 (en) * 2014-02-26 2015-08-27 Ferrum Ag Centrifuge and method of loading a centrifuge
EP2946835A1 (fr) 2014-05-22 2015-11-25 Ferrum AG Centrifugeuse, ainsi que dispositif de pré-accélération pour une centrifugeuse
CN106345618A (zh) * 2016-08-29 2017-01-25 成都科创诺商贸有限公司 一种多级分离的离心机

Also Published As

Publication number Publication date
EP1468742B1 (fr) 2016-11-23

Similar Documents

Publication Publication Date Title
EP1468744B1 (fr) Centrifugeuse à poussoir avec cone rotatif pour pre-accélerer le mélange
WO2003078070A1 (fr) Centrifugeuse a vis sans fin
CH622341A5 (fr)
EP0638365B2 (fr) Procédé et dispositif pour séparer des matières solides à grains fins en deux fractions granulométriques
EP2913112B1 (fr) Centrifugeuse et procédé de chargement d'une centrifugeuse
DE3301099C2 (fr)
DE3046946A1 (de) Dekantierzentrifuge
EP1940554B1 (fr) Procede d'utilisation d'une centrifugeuse
EP1468742B1 (fr) Centrifugeuse à poussoir avec plusieur étages
EP1280606A1 (fr) Centrifugeuse a bol plein pour la separation de melanges de substances liquides et solides
DE3810565C1 (fr)
DE19835555B4 (de) Verfahren und Vorrichtung zum Nassmahlen und Dispergieren von Feststoffpartikeln in Flüssigkeiten
EP0163112B1 (fr) Procédé et dispositif pour la séparation centrifuge de mélanges de minéraux à grains fins
EP0421188A1 (fr) Centrifugeuse à poussoir
EP1468743A1 (fr) Centrifugeuse-pousseuse
EP2959977B1 (fr) Centrifugeuse à poussoir double ainsi que système de plancher coulissant
DE2407833A1 (de) Schub- schaelschleuder zur abtrennung von feststoffen aus suspensionen
EP1468741A1 (fr) Centrifugeuse à poussoir à double action
DE3839607A1 (de) Verfahren und vorrichtung zum trockensieben
DE2739063A1 (de) Verfahren und vorrichtung zum zentrifugieren
DE529610C (de) Kegelsiebschleuder zum Entwaessern von Kohle u. dgl. mit im Innern des Siebkegels ringfoermig angeordneten Ablenkrippen
EP1787723B1 (fr) Cartouche centrifuge
EP2946835A1 (fr) Centrifugeuse, ainsi que dispositif de pré-accélération pour une centrifugeuse
DE872304C (de) Verfahren und Vorrichtung zum Sichten von pulverfoermigem Material
AT518275A4 (de) Schneckenzentrifuge zur nassmechanischen trennung von feststoffen

Legal Events

Date Code Title Description
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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20050323

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20071029

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160810

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK 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: DE

Ref legal event code: R081

Ref document number: 502004015392

Country of ref document: DE

Owner name: FERRUM PROCESS SYSTEMS AG, CH

Free format text: FORMER OWNER: FERRUM AG, RUPPERSWIL, CH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: INTELLECTUAL PROPERTY SERVICES GMBH, CH

Ref country code: CH

Ref legal event code: EP

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: AT

Ref legal event code: REF

Ref document number: 847384

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161215

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502004015392

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20161123

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2608852

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20170417

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

Ref country code: SE

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: 20161123

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: 20170224

Ref country code: NL

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: 20161123

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

Ref country code: PL

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: 20161123

Ref country code: PT

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: 20170323

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: 20161123

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: 20161123

Ref country code: RO

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: 20161123

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: 20161123

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: 20161123

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502004015392

Country of ref document: DE

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: 20170223

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: 20170824

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

Effective date: 20170318

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: 20161123

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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: 20170318

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: 20170318

Ref country code: IE

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

Effective date: 20170318

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170331

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 847384

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170318

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: 20170331

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

Ref country code: AT

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

Effective date: 20170318

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

Ref country code: HU

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

Effective date: 20040318

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

Ref country code: CY

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

Effective date: 20161123

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: FERRUM PROCESS SYSTEMS AG

Effective date: 20200925

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004015392

Country of ref document: DE

Representative=s name: KEMPKENS, ANKE, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502004015392

Country of ref document: DE

Owner name: FERRUM PROCESS SYSTEMS AG, CH

Free format text: FORMER OWNER: FERRUM AG, RUPPERSWIL, CH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: INTELLECTUAL PROPERTY SERVICES GMBH, CH

Ref country code: CH

Ref legal event code: PUE

Owner name: FERRUM PROCESS SYSTEMS AG, CH

Free format text: FORMER OWNER: FERRUM AG, CH

Ref country code: SI

Ref legal event code: SP73

Owner name: FERRUM PROCESS SYSTEMS AG; CH

Effective date: 20201007

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

Ref country code: FR

Payment date: 20230321

Year of fee payment: 20

Ref country code: CZ

Payment date: 20230309

Year of fee payment: 20

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

Ref country code: TR

Payment date: 20230317

Year of fee payment: 20

Ref country code: SI

Payment date: 20230309

Year of fee payment: 20

Ref country code: DE

Payment date: 20230321

Year of fee payment: 20

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230317

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

Ref country code: IT

Payment date: 20230328

Year of fee payment: 20

Ref country code: ES

Payment date: 20230527

Year of fee payment: 20

Ref country code: CH

Payment date: 20230402

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 502004015392

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: CZ

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20240318

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

Ref country code: SI

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20240319

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20240506