WO2008071207A1 - Dispositif de filtration à bande avec production d'une dépression - Google Patents

Dispositif de filtration à bande avec production d'une dépression Download PDF

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Publication number
WO2008071207A1
WO2008071207A1 PCT/EP2006/011983 EP2006011983W WO2008071207A1 WO 2008071207 A1 WO2008071207 A1 WO 2008071207A1 EP 2006011983 W EP2006011983 W EP 2006011983W WO 2008071207 A1 WO2008071207 A1 WO 2008071207A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
filter
filter device
rollers
rolling guide
Prior art date
Application number
PCT/EP2006/011983
Other languages
German (de)
English (en)
Inventor
Wilhelm Tiemann
Original Assignee
Wilhelm Tiemann
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 Wilhelm Tiemann filed Critical Wilhelm Tiemann
Priority to PCT/EP2006/011983 priority Critical patent/WO2008071207A1/fr
Publication of WO2008071207A1 publication Critical patent/WO2008071207A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts

Definitions

  • the invention relates to a band filter device with at least one circulating band and a vacuum generating device according to the preamble of claim 1 and a filtration method according to the preamble of claim 13.
  • a working strand of a filter belt is loaded solely by the weight of a substance applied to this mixture and thereby particularly fine or liquid components in particular through small openings of the filter belt, for example, thread spaces of a fabric or knitted or punched a metal - Or plastic tape, pressed.
  • a filter belt can be provided as an endless belt with respect to the direction end deflections, wherein the top running layer of the filter belt forms the working strand.
  • the filter band can be supported in the region of the working strand on the upstanding webs of a flat grid and is used for this when the negative pressure is applied.
  • this is a standstill of the filter belt is connected during the negative pressure, which counteracts a high speed and effectiveness of the filtering process.
  • the supply of additional material to the filter belt must be prevented in this time in order to prevent too high a structure. The requirements for a control unit for such a device are therefore significant.
  • the invention is based on the problem of improving the efficiency of a generic band filter device.
  • the invention solves this problem by a band filter device with the features of claim 1 and by a working method having the features of claim 13.
  • a band filter device with the features of claim 1 and by a working method having the features of claim 13.
  • the filter belt With the arrangement according to the invention as claimed in claim 1, with the arrangement of a rolling guide for the filter belt between the latter in the region of its working stream and the inlet opening of the vacuum generating device, the filter belt can continue to run during the pressurization of the vacuum.
  • a stop of the belt is basically no longer required, but can, if required, for example, due to a large amount of supplied goods, also be performed.
  • the stop phase but can be selected shorter than in known devices, since there to release the sucked filter belt only a return to normal pressure at the inlet opening was required and only when the tape is stopped again the vacuum can be rebuilt, which requires a lot of time ,
  • the negative pressure can be continuously maintained regardless of a feed or standing of the filter belt in any case.
  • system according to the invention can be operated continuously, so that the supply can also continue to run continuously.
  • the rolling guide advantageously comprises a plurality of successively arranged, each rotatably mounted rollers.
  • a plurality of rollers is advantageously provided side by side over the width of the belt, which may typically be in the range of one meter.
  • the rolling guide for example, via individual tracks of juxtaposed rollers, form a drive for the filter belt.
  • the rolling guide extends almost over the entire width of the underrun filter belt.
  • a modular construction of the device according to the invention is very favorable.
  • a plurality of respective circumferential filter belts held on a frame may be provided, wherein a plurality of modules are connected in series or in parallel very flexibly can be assembled to form a complete system.
  • the frame of individual modules in the manner of a modular system can be connected to each other, such as for a superposition of several modules.
  • Fig. 1 is a schematic side view of an inventive
  • FIG. 2 is a view similar to FIG. 1, but with two modularly superimposed modules according to FIG. 1, FIG.
  • FIG. 3 is a plan view of a segment of the rolling guide, of which a plurality of successively (and side by side) can be mounted, approximately in accordance with the arrow III in Fig. 1, but with a filter band shown transparent,
  • the total designated with 1 band filter device comprises in the illustration of Figure 1, a single module 2, in the illustration of Figure 2, two modules constructed one above the other.
  • Each of the modules 2 comprises mutually compatible support posts 3, which hold at least one filter belt 4. Also several side by side running filter belts 4 are possible.
  • the filter belt 4 is relative to his direction L end of deflection rollers 5, 6 deflected. In side view therefore results in a course as in a circulating chain drive.
  • a tension roller - not shown - can be additionally provided.
  • the filter belt 4 itself may be formed by a woven, knitted or similar textile material. The mesh size should be selected according to the substances to be separated. Also, a plastic or metal strip with a grid of perforations may come into question.
  • a part of the upper web of the filter belt 4 spaced apart from the direction of travel L of the middle section and the deflection rollers 5, 6 forms a working strand 7. This is by means of, for example, a running over the transverse extent of the working strand 6 feed channel 8 with 9 to be filtered Good fed.
  • the inlet opening 10 in detail a plurality of individual channels 12 includes the - about hose pieces - in a common, for example, laterally adjacent to the filter belt 4 extending pipe 13th open as a filtrate collection tube from which solid components are fed to a filtrate 14.
  • the pressure difference between the upper side and the lower side of the working strip 7 introduced by the negative pressure generating device 11 is typically about 0.5 to 1 bar.
  • a roll guide 15 is arranged for the filter belt 4 in the region of his Ultrums 7 between this and the inlet opening 10 of the vacuum generating device 1 1, on which it can roll with its upper web during operation, even under negative pressure.
  • This rolling guide 15 can be designed differently, but in any case includes - at least partially - unrollable units. Sliding elements can be available as support.
  • the rollable units are here by a plurality of successively and juxtaposed, each about transversely to the direction L axes 17 rotatably mounted rollers 16, 16a formed. These rollers 16, 16 a have supporting contact with the underside of the band 4.
  • a plurality of juxtaposed rollers 16 may be held on a common axis 17 penetrating them, so that a transverse row 18 of juxtaposed rollers 16, 16a can be mounted and dismounted together like a rotisserie spit.
  • This common axis 17 can either pass over all juxtaposed rollers 16, 16a of a row 18 or pass through only a part of these rollers 16, 16a.
  • the axis 17 may be interposed in each case in the running direction L extending solid frame members 19 between juxtaposed rollers 16.
  • An outer longitudinal frame part 20 is also provided with an upstanding and advantageously flexible seal, for example with a rubber lip and / or brush seal.
  • the width of the frame members 19 should be low, for example below ten millimeters.
  • the individual rolls have a typical axial extent of between 35 and 55 millimeters and a diameter of 20 to 30 millimeters.
  • the rolling guide extends almost over the entire width of the underrun filter belt 4, here about a meter.
  • a provided with a fixed frame section 22 of the rolling guide 15 is shown, which is here nineteen rollers 16, 16a adjacent to each other and twenty-two rollers in a row. It can be mounted behind each other and also side by side several such subsections, so that the extension of the working strand 7 in the running direction L can be several meters.
  • This structure of the rolling guide 15 of a plurality of similar sections 22 is particularly favorable because these sections can be replaced individually, depending on the wear of the rollers 16, 16a, the jacket is typically made of PE or PP or similar plastic, whereas the axis 17, for example Stainless steel can exist.
  • the rolling guide 15 can at least almost completely overlap the inlet opening 10 of the vacuum generating device, so that the filter belt 4 is similarly supported over the entire region of the negative pressure application.
  • the rollers 16 are close behind each other, their distance with respect to the direction L is typically less than five millimeters. The support of the band 4 is thus very dense.
  • the rolling guide 15 may also have a drive function in addition to the band 4 in the intake assisting and leading function.
  • the driving force acting in the circumferential direction can also be initiated via the end-side deflection rollers 5, 6 or via other measures.
  • each axis 17 extends rectilinearly up to the edge-side longitudinal frame part 20.
  • edge side rollers 16a of the rolling guide with respect to more centrally located rollers 16 angled to be mounted to the edge 20 upwardly opening angle, so that a sharkgebogender edge region of the filter belt 4 would be in the range of his workstrum 7.
  • the modular structure is exploited such that there are two modules 2 stacked one above the other and connected to each other via their support stand 3.
  • the uprights 3 are dimensioned sufficiently to be able to carry a plurality of further modules 2.
  • each module 2 is assigned its own charging unit 8 and its own stripping unit 21 for the driver cake.
  • a series connection would be possible in which the filter cake of the upper module 2 is fed to the working stream 7 of the lower and filtered there again.
  • a particularly high degree of dryness can be achieved by withdrawing liquid.
  • the belt filter devices 1 consisting of one or more modules 2 can be used in particular for filtering substance mixtures containing solid and liquid phases, for example for toner, pharmaceutical substances, gypsum, sand, lime or calcium carbonate-containing substances.
  • the negative pressure generating device 1 1 run continuously in operation, under ideal
  • I belt filter device 14 filtrate separator, module, 15 roller guide, support stand, 20 16 roller, filter belt, 16a edge roller, deflection roller, 17 axis, deflection roller, 18 transverse row, working strand, 19 longitudinal frame part, supply channel, 25 20 lateral longitudinal edge, material to be filtered, 21 scraper,

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

Dispositif de filtration à bande (1), avec au moins une bande filtrante (4) circulant en service, qui présente un brin de travail supérieur (7) et des renvois terminaux (5 ; 6), sachant qu'une ouverture d'entrée (10) d'un équipement (11) de production d'une dépression est prévue en dessous du brin de travail (7). Ce dispositif est conçu de telle sorte qu'un guidage à galets (15) pour la bande filtrante (4) est disposé entre la bande filtrante (4) dans la région de son brin de travail (7) et l'ouverture d'entrée (10) de l'équipement de production d'une dépression.
PCT/EP2006/011983 2006-12-13 2006-12-13 Dispositif de filtration à bande avec production d'une dépression WO2008071207A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/011983 WO2008071207A1 (fr) 2006-12-13 2006-12-13 Dispositif de filtration à bande avec production d'une dépression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/011983 WO2008071207A1 (fr) 2006-12-13 2006-12-13 Dispositif de filtration à bande avec production d'une dépression

Publications (1)

Publication Number Publication Date
WO2008071207A1 true WO2008071207A1 (fr) 2008-06-19

Family

ID=37882214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/011983 WO2008071207A1 (fr) 2006-12-13 2006-12-13 Dispositif de filtration à bande avec production d'une dépression

Country Status (1)

Country Link
WO (1) WO2008071207A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933634A (en) * 1971-08-13 1976-01-20 Toru Seki Method of treatment of sludges with size-adjusted carbon
EP0020101A1 (fr) * 1979-05-25 1980-12-10 Bateman Equipment Limited Bande filtrante sous vide comprenant des moyens d'étanchéité sous vide
GB1591965A (en) * 1977-03-21 1981-07-01 Schneider Co Inc J R Filter
SU1001972A1 (ru) * 1980-06-12 1983-03-07 Всесоюзный научно-исследовательский институт нерудных строительных материалов и гидромеханизации Ленточный фильтр
EP0422715A1 (fr) * 1989-10-09 1991-04-17 Pannevis B.V. Appareil pour séparer un fluide à partir d'un mélange de particules solides et d'un fluide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3933634A (en) * 1971-08-13 1976-01-20 Toru Seki Method of treatment of sludges with size-adjusted carbon
GB1591965A (en) * 1977-03-21 1981-07-01 Schneider Co Inc J R Filter
EP0020101A1 (fr) * 1979-05-25 1980-12-10 Bateman Equipment Limited Bande filtrante sous vide comprenant des moyens d'étanchéité sous vide
SU1001972A1 (ru) * 1980-06-12 1983-03-07 Всесоюзный научно-исследовательский институт нерудных строительных материалов и гидромеханизации Ленточный фильтр
EP0422715A1 (fr) * 1989-10-09 1991-04-17 Pannevis B.V. Appareil pour séparer un fluide à partir d'un mélange de particules solides et d'un fluide

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