EP0368929A1 - Plaque de filtrage en forme d'auge pour filtres-presses rotatifs - Google Patents

Plaque de filtrage en forme d'auge pour filtres-presses rotatifs

Info

Publication number
EP0368929A1
EP0368929A1 EP88907672A EP88907672A EP0368929A1 EP 0368929 A1 EP0368929 A1 EP 0368929A1 EP 88907672 A EP88907672 A EP 88907672A EP 88907672 A EP88907672 A EP 88907672A EP 0368929 A1 EP0368929 A1 EP 0368929A1
Authority
EP
European Patent Office
Prior art keywords
wire mesh
filter plate
filter
plate
groove
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.)
Ceased
Application number
EP88907672A
Other languages
German (de)
English (en)
Inventor
Karl Bock
Rainer Küsgen
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0368929A1 publication Critical patent/EP0368929A1/fr
Ceased legal-status Critical Current

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
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • B01D33/09—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration with surface cells independently connected to pressure distributors
    • 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
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements

Definitions

  • the invention relates to a trough-shaped filter plate for rotary pressure filters with a filtrate tube and welded, circumferentially sealed wire mesh, with an outer circumferential groove for receiving a sealing ring for sealing against adjacent parts.
  • Such filter plates are factory internal state of the Tech ⁇ nik the patentee and are used in the rotary pressure filter for continuous filtration of * to be separated Walpha ⁇ sigen mixtures.
  • a filter consists of a rotating filter drum, which is divided into filter cells, and a filter housing, which is divided into several pressure-tight chambers and an unpressurized removal chamber.
  • the individual filter cells are • equipped with filter plates, which can be covered with different filter fabrics. In this filter fabric of the actual Fil place 'instead trationsvorgang.
  • the turbidity introduced into the housing under pressure reaches the filter cell len, where a filter cake from the solid builds up on the filter fabric, through which the filtrate reaches the inside of the drum via filtrate pipes.
  • Different filter fabrics are used depending on the nature of the mixture to be separated. It is common to use multi-layer special wire mesh in the methyl cellulose filtration. The filter plates are covered with the special wire mesh and welded all around. The plasma welding required due to the very thin wire diameter is extremely difficult and cost-intensive. If the filter plate is now to be re-tensioned with filter fabric, it is necessary to separate the old fabric from the filter plate by milling and to provide the filter plate with a new filter fabric with the aid of a new plasma welding. This process is very expensive and, moreover, cannot be repeated as often as required.
  • the object of the invention is therefore to enable a filter plate to be covered with wire mesh simply, as often as desired and inexpensively.
  • Such a filter plate is simple and can be covered with wire mesh as often as required.
  • the seal between the filter plate and the wire mesh takes place primarily through the sealing ring inserted into the groove while on the four outer corner edges of the filter plate, the corner areas of the wire mesh are to be welded together.
  • the sealing ring In order to replace the wire mesh, only the sealing ring has to be removed and the wire mesh removed from the filter plate. Machining of the filter plate, as in the case of conventional all-round welding of the filter plate to the wire mesh by milling, is not necessary.
  • 1 is a partial section of a filter plate covered with a wire mesh
  • Fig. 3 is a cut wire mesh before covering and in
  • FIG. 4 a covering process.
  • a filter plate 1 of a filter cell of a rotary pressure drum filter not shown in the drawing, has a filtrate tube 2 and an outer circumferential groove 3 for receiving a sealing ring 4 for sealing against adjacent parts, such as other filter plates or support frames.
  • the filter plate 1 is covered with a multilayer wire mesh 5. Edges 6 of the wire mesh 5 are placed around the plate edge 7 of the filter plate 1 into the groove 3.
  • the filter plate 1 is covered as follows:
  • the wire mesh 5 is first cut to size. At the corners of the wire mesh 5, rectangular cutouts 8 are formed which are continued in 45 bevels 9, so that corner regions 10 are formed.
  • the wire mesh 5 is then folded on edges 11 and placed over the filter plate 1. With a device 12, the wire mesh 5 is pressed wrinkle-free onto the plate edge 7 and drawn into the groove 3. In this position, the corner regions 10 of the folded wire mesh 5 abut each other at right angles and are welded to one another, as are the bevels 9 which collide in the groove 3 (see FIG. 2).
  • the sealing ring 4 is inserted into the groove 3.
  • the sealing ring 4 thus provides a seal on the one hand - -
  • a filtrate flow can only penetrate through the wire mesh 5 into the interior of the filter plate 1 and run through the filtrate tube 2.

Landscapes

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

Abstract

Une plaque de filtrage en forme d'auge est utilisée dans des filtres-presses ayant un tuyau de filtrat, un tissu en fil métallique fixé de manière étanche autour du bord de la plaque et une rainure extérieure continue qui reçoit une rondelle d'étanchéité afin d'assurer l'étanchéité par rapport aux pièces adjacentes. Le but de l'invention est de trouver une solution qui permette de monter le tissu en fil métallique de manière aisée et économique sur la plaque de filtrage aussi souvent que voulu. A cet effet, on insère les bords (6) du tissu en fil métallique (5) dans la rainure continue (3) autour de la circonférence extérieure (7) de la plaque, et on les scelle par rapport à la plaque de filtrage (1) au moyen de la rondelle d'étanchéité, les coins (10) du tissu en fil métallique (5) étant soudés les uns aux autres de façon à en assurer l'étanchéité.
EP88907672A 1987-09-24 1988-09-13 Plaque de filtrage en forme d'auge pour filtres-presses rotatifs Ceased EP0368929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3732188A DE3732188C1 (de) 1987-09-24 1987-09-24 Trogfoermige Filterplatte fuer Drehdruckfilter
DE3732188 1987-09-24

Publications (1)

Publication Number Publication Date
EP0368929A1 true EP0368929A1 (fr) 1990-05-23

Family

ID=6336782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88907672A Ceased EP0368929A1 (fr) 1987-09-24 1988-09-13 Plaque de filtrage en forme d'auge pour filtres-presses rotatifs

Country Status (4)

Country Link
EP (1) EP0368929A1 (fr)
JP (1) JPH03500263A (fr)
DE (1) DE3732188C1 (fr)
WO (1) WO1989002777A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825605A1 (de) * 1988-07-28 1990-02-01 Henkel Kgaa Trogfoermige filterplatte fuer drehdruckfilter und verfahren zum herstellen einer solchen
DE20202195U1 (de) 2002-02-14 2002-04-18 Haver & Boecker, 59302 Oelde Filtereinrichtung
CN110170203A (zh) * 2019-06-04 2019-08-27 永康卡梅新材料有限公司 一种氨氮检测试剂及其检测处理方法
DE102022121991A1 (de) * 2022-08-31 2024-02-29 Haver & Boecker Ohg Filtereinrichtung, Trommelfiltervorrichtung und Verfahren zur Montage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB287351A (en) * 1927-05-17 1928-03-22 Arthur Hales Improvements in or relating to strainers for liquids
US2454134A (en) * 1945-01-08 1948-11-16 Ambrose L Burleson Rotary drum filter
DE1008257B (de) * 1953-09-03 1957-05-16 Gustav Netzel Dipl Ing Befestigung von Trenn- und deren Unterstuetzungs-mitteln auf Filtern, Sieben u. dgl.
US2793755A (en) * 1954-04-12 1957-05-28 Dorr Oliver Inc Drum filter with removable sections

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8902777A1 *

Also Published As

Publication number Publication date
JPH03500263A (ja) 1991-01-24
DE3732188C1 (de) 1988-09-15
WO1989002777A1 (fr) 1989-04-06

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Legal Events

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

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17P Request for examination filed

Effective date: 19891214

AK Designated contracting states

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Effective date: 19901010

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Effective date: 19910610