WO2005115587A1 - Appareil de nettoyage de filtre et procede de nettoyage associe - Google Patents

Appareil de nettoyage de filtre et procede de nettoyage associe Download PDF

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Publication number
WO2005115587A1
WO2005115587A1 PCT/IT2004/000300 IT2004000300W WO2005115587A1 WO 2005115587 A1 WO2005115587 A1 WO 2005115587A1 IT 2004000300 W IT2004000300 W IT 2004000300W WO 2005115587 A1 WO2005115587 A1 WO 2005115587A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
holes
cleaning fluid
tube
cleaning
Prior art date
Application number
PCT/IT2004/000300
Other languages
English (en)
Inventor
Sergio Musciacchio
Original Assignee
Altair S.R.L.
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 Altair S.R.L. filed Critical Altair S.R.L.
Priority to PCT/IT2004/000300 priority Critical patent/WO2005115587A1/fr
Publication of WO2005115587A1 publication Critical patent/WO2005115587A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04—Cleaning filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/69—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side without movement with respect to the filter elements, e.g. fixed nozzles

Definitions

  • the present invention relates to an apparatus for cleaning a filter, in particular a filter for an industrial vacuum plant, and to an associated method of cleaning.
  • Such filters which are typically tubular in shape, are installed within a chamber into which a fluid is caused to flow, bringing dust and other particles with it. As it flows inwards from the outside of the filter, the fluid is freed of this dust and any other particles, which are trapped in the filter wall, and, once cleaned, it flows out of the filter once again.
  • the object of the present invention is to provide an apparatus for cleaning these surfaces as fully and accurately as possible in a short time and at a low cost, and which is reliable and lasts well.
  • an apparatus including a stationary hollow member with at least one aperture for entry of a cleaning fluid and a plurality of exit holes for this fluid, the said apparatus being locatable outside the filter in such a way that the cleaning fluid coming out of the said holes is directed at the outer surface of the filter.
  • the apparatus of the invention Since it can be arranged outside the filter, the apparatus of the invention is able to achieve thorough and effective cleaning. In addition, since it includes no movable parts, it significantly reduces the risk of blockages or breakdowns . It should be noted here that although the definition as "stationary" rules out the possibility of the apparatus including any components which would be deliberately moved in relation to one another in use (translatable nozzles or the like, for example) , it does not rule out the possibility of the entire apparatus or parts thereof being subject to small and not deliberately determined movements, due for example to thermal expansion, the resilience of the apparatus itself, the flow of the cleaning fluid through it or the like.
  • An additional object of the invention is to provide a method for cleaning a filter by means of apparatus of the type described above, in which, the cleaning fluid flowing from the holes in the hollow member is substantially directed at least at a portion of and preferably at all the outer filtering surface of the filter.
  • Figure 1 is a schematic perspective view of a filter fitted in a dust-removing chamber and having an associated cleaning apparatus according to the invention
  • Figure 2 is an exploded view of elements shown in Figure 1
  • Figure 3 is a perspective view of a filter with associated cleaning apparatus according to the invention
  • Figure 4 is a perspective view of a cleaning apparatus according to the invention.
  • a tubular filter 10 is ' located in use (see Figure 1) in a dust-removing chamber 12 with a passage 14 for -the intake (see arrows 16) of a fluid which is cleaned of any dust or other particles carried along with it as it flows from the outside to the inside of the filter 10, flowing back into the outside environment once it is cleaned of the dust particles carried along with it (see arrows 20) .
  • the filter 10 is disposed in the chamber 12 (see Figure 2) with its longitudinal axis 22 orientated vertically.
  • the plate 26 has circumferentially spaced through-bolts 30, which the hooks 24 can engage and disengage in a bayonet coupling as a result of rotation of the filter 10 about the axis 22.
  • the cleaning apparatus 32 is disposed (see Figures 3 and 4) around the outer surface of the filter 10. It comprises a stationary hollow body formed by a length of tube shaped as a coil 34 with its ends connected by an additional straight portion of tube 36 with an aperture 37 in its median portion for coupling with a connector sleeve 38 for supplying a cleaning fluid, in particular compressed air, supplied by a compressor which is not shown in the drawings.
  • the rectilinear tube 36 is disposed parallel to the axis 22 of the filter 10.
  • a plurality of holes 40 are formed in the inner surface, facing the filter 10, of the spiral tube 34, for the cleaning fluid to flow out through.
  • the diameter of the tube 34, 36 is between 10 and 18mm, while the diameter of the holes 40 is between 1.5 and 2.5mm, with the holes being spaced by a distance of between 14 and 26mm, and the pitch of the coils of the tube 34 is between 70 and 130mm.
  • the apparatus 32 also includes means for selectively fixing it to the support plate 26 for the filter 10.
  • selective fixing means comprise a ring 42 secured to the upper portion of the hollow member and having a plurality of circumferentially spaced hooks 44 on its outside.
  • the hooks 44 can form a bayonet coupling with the bolts 30 through the support plate 26, in the same way as the hooks 24 on the top of the filter 10, that is as a result of rotation of the cleaning apparatus about the axis 22 of the filter 10.
  • the cleaning action has been found to be particularly effective when the flow of compressed air is pulsed. It is advantageous if the speed of the compressed air as it leaves the holes 40 and hits the outer wall of the filter 10 is of between 167 and 238 m/s and the distance between the holes 40 and the facing portion of the- filtering surface is of between 5 and 15mm. It is preferable if the dimensions of the apparatus 32 are such that it extends along the entire length of the filter 10 so that it is able to clean the whole filter at the same time. However, if necessary it is possible to use apparatus of different dimensions from those of the filter 10 or to partially use an apparatus having the dimensions of the filter 10 so that the cleaning fluid can be directed only at particular areas.
  • the apparatus 32 can be made of any material such as metal, a plastics or composite material and the like. In any event, since it is essentially constituted by hollow components, it is light and does not weigh too heavily on the support plate 26.
  • the cleaning apparatus 32 does not impede the normal operation of the filter 10 and can therefore be left permanently in place around this latter. When necessary, during maintenance or inspection operations for example, it can easily be removed along with the filter 10 by rotating it about the axis 22 and releasing the hooks 44 from the bolts 30 on the support plate 26. The apparatus is then separated from the filter 10 by a simple axial movement.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un appareil (32) servant à nettoyer un filtre (10), lequel appareil comporte un élément creux stationnaire présentant au moins une ouverture (37) pour l'entrée d'un fluide de nettoyage et une pluralité d'orifices (40) pour la sortie de ce fluide de nettoyage. Ledit appareil (32) peut être fixé sur l'extérieur du filtre (10), de sorte que le fluide de nettoyage sortant desdits orifices (40) soit dirigé sur la surface extérieure du filtre (10). Il est préférable que le corps creux présente une longueur de tube (34) en spirale.
PCT/IT2004/000300 2004-05-25 2004-05-25 Appareil de nettoyage de filtre et procede de nettoyage associe WO2005115587A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2004/000300 WO2005115587A1 (fr) 2004-05-25 2004-05-25 Appareil de nettoyage de filtre et procede de nettoyage associe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2004/000300 WO2005115587A1 (fr) 2004-05-25 2004-05-25 Appareil de nettoyage de filtre et procede de nettoyage associe

Publications (1)

Publication Number Publication Date
WO2005115587A1 true WO2005115587A1 (fr) 2005-12-08

Family

ID=34957969

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2004/000300 WO2005115587A1 (fr) 2004-05-25 2004-05-25 Appareil de nettoyage de filtre et procede de nettoyage associe

Country Status (1)

Country Link
WO (1) WO2005115587A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107913556A (zh) * 2016-10-10 2018-04-17 Bha阿尔泰有限责任公司 连接器和联接的打褶过滤器区段

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511817A (en) * 1950-06-13 Overlapping blow ring for filters
US2861649A (en) * 1955-05-03 1958-11-25 Junkmann Heinzjosef Filter hose cleaners
US3095289A (en) * 1960-09-02 1963-06-25 Cottrell Res Inc Gas cleaning apparatus
US3716968A (en) * 1969-03-28 1973-02-20 Daimler Benz Ag Installation for filtering and cleaning filters
FR2621830A1 (fr) * 1987-10-14 1989-04-21 Guinard Centrifugation Installation de filtration d'une suspension et egoutteur incorpore a une telle installation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511817A (en) * 1950-06-13 Overlapping blow ring for filters
US2861649A (en) * 1955-05-03 1958-11-25 Junkmann Heinzjosef Filter hose cleaners
US3095289A (en) * 1960-09-02 1963-06-25 Cottrell Res Inc Gas cleaning apparatus
US3716968A (en) * 1969-03-28 1973-02-20 Daimler Benz Ag Installation for filtering and cleaning filters
FR2621830A1 (fr) * 1987-10-14 1989-04-21 Guinard Centrifugation Installation de filtration d'une suspension et egoutteur incorpore a une telle installation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107913556A (zh) * 2016-10-10 2018-04-17 Bha阿尔泰有限责任公司 连接器和联接的打褶过滤器区段

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