CH603207A5 - Centrifugal filter element with carrier plate and mesh cover - Google Patents
Centrifugal filter element with carrier plate and mesh coverInfo
- Publication number
- CH603207A5 CH603207A5 CH598576A CH598576A CH603207A5 CH 603207 A5 CH603207 A5 CH 603207A5 CH 598576 A CH598576 A CH 598576A CH 598576 A CH598576 A CH 598576A CH 603207 A5 CH603207 A5 CH 603207A5
- Authority
- CH
- Switzerland
- Prior art keywords
- filter
- filter element
- mesh cover
- fabric
- carrier plate
- Prior art date
Links
- 239000004033 plastic Substances 0.000 claims abstract description 12
- 229920003023 plastic Polymers 0.000 claims abstract description 12
- 239000004744 fabric Substances 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000012065 filter cake Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
- B01D29/41—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type mounted transversely on the tube
- B01D29/416—Filtering tables
-
- 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
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/17—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with rotary filtering tables
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Centrifugal Separators (AREA)
Abstract
A centrifugal filter element comprises a carrier plate, or mesh cover and a metallic or plastics filter layer firmly fixed to the mesh cover. The filter layer may be adhered welded or sewn to the mesh cover depending on the materials used.The filter layer is not disturbed during removal of the filter cake.
Description
Gegenstand der Erfindung ist ein Filterelement für Zentrifugalreinigungsfilter.
Filterelemente für Zentrifugalreinigungsfilter sind be kannt. Die cH-PS 554 beschreibt ein Filterelement, das aus einem undurchlässigen konischen Boden besteht, über den ein Filtertuch gespannt ist. Häufig sind noch Stützgitter zwischen Boden und Filtertuch eingebaut. Die CH-PS 458286 betrifft ein Filterelement, das aus einer mit Profilen versehenen Kunststoffplatte besteht, welche mit einem als Filtermittel wirkenden Gewebe versehen ist.
Alle diese Filterelemente bestehen aus einer undurchlässigen Trägerscheibe oder einem Teller und einem darüber angebrachten Filtermedium, bestehend aus einem Metallgewebe oder einem Kunststoffgewebe, das zwar an der Peripherie und dem Zentrum befestigt ist, nicht jedoch in der Mitte. der eigentlichen Filterfläche.
Nachteil dieser Bespannung ist, dass nach einigen Filtrationszyklen das Gewebe infolge der Abschleuderung des Filterkuchens sich verschieben kann. Dadurch entstehen im Laufe der Zeit Falten, die zu Brüchen und dann Rissen der Gewebe führen. Auch die übliche Rückspülung der Elemente nach Abschleudern des Filterkuchens verkürzt die Lebensdauer der Gewebe.
Aufgabe der Erfindung ist es nun, die Gewebe auf ihrer Unterlage so zu befestigen, dass eine Verschiebung, Faltenbildung und Bruch vermieden werden.
Die Lösung dieser Aufgabe stellt ein Filterelement für Zentrifugalreinigungsfilter, bestehend aus einer Trägerplatte, einem Stützgitter und einem Filtergewebe aus Metall oder Kunststoff dar und ist dadurch gekennzeichnet, dass das Filtergewebe mit dem Stützgitter fest verbunden ist.
In der Zeichnung ist ein Ausführungsbeispiel des erfindungsgemässen Filterelementes dargestellt.
Fig. 1 zeigt die Draufsicht und den Aufriss eines Filterelements, bei dem das Filtergewebe und der Spannring nur teilweise gezeigt werden.
Fig. 2 zeigt einen Schnitt durch ein Filterelement nach Linie I-I der Fig. 1.
Der Bodenteil 1 kann aus Metall oder Kunststoff; bei Metall vorzugsweise Edelstahl, bei Kunststoff vorzugsweise einem glasfaserverstärkten Kunststoff bestehen. Die Scheibe verläuft gegen die Mitte hin konisch. In der Mitte befindet sich das grobe Stützgitter 2, welches sowohl aus Kunststoff als auch Metall bestehen kann. Darüber ist ein Filtergewebe 3 gespannt, das mit beispielsweise Epoxyharz oder einem anderen Klebemittel befestigt ist. Der Auftrag des Klebstoffes erfolgt auf die aufgerauhten Kunststoffmaschen des Stützgitters. Die eigentliche Verklebung findet durch Aufdrücken des Filtergewebes auf das Stützgitter statt. Die Verstärkung der Befestigung an der Peripherie kann in bekannter Weise ein Spannring 4 sein, der durch ein Spannschloss 5 zusammengehalten wird, erfolgen.
Eine Verklebung kann jedoch auch durchgeführt werden, wenn das Stützgitter 2 aus Kunststoff und das Filtergewebe 3 aus Metall bestehen. Geeignete Klebstoffe sind bekannt.
Bestehen beide Elemente, Stützgitter 2 und Filtergewebe 3 aus Metall, so ist eine Verschweissung möglich. Bestehen beide Elemente, Stützgitter 2 und Filtergewebe 3 aus Kunststoff, so kann gleichfalls eine Verschweissung vorgenommer werden.
Eine weitere Variante der Befestigung ist das Vernähen mit Kunststoff oder Metallfäden. Auch hierdurch erfolgt eine gute dauerhafte Verbindung zwischen Stützgitter und Filtergewebe.
Der Einsatz der beschriebenen Filterelemente ist vorzugsweise bei Zentrifugalreinigungsfiltem von Vorteil. Die Erfindung braucht sich jedoch nicht auf diese beschränken, da die direkte Verbindung von Stützgittem mit dem Filtergewebe für Filterelemente anderer Filter auch eine Verlängerung der Lebensdauer für deren Filtergewebe erwarten lässt.
The invention relates to a filter element for centrifugal cleaning filters.
Filter elements for centrifugal cleaning filters are known. The cH-PS 554 describes a filter element which consists of an impermeable conical base over which a filter cloth is stretched. Support grids are often built in between the floor and the filter cloth. The CH-PS 458286 relates to a filter element which consists of a plastic plate provided with profiles, which is provided with a fabric acting as a filter medium.
All of these filter elements consist of an impermeable support disk or a plate and a filter medium attached over it, consisting of a metal mesh or a plastic mesh, which is attached to the periphery and the center, but not in the middle. the actual filter surface.
The disadvantage of this covering is that after a few filtration cycles, the fabric can shift as a result of the filter cake being thrown off. This creates wrinkles over time that lead to breaks and then tears in the tissues. The usual backwashing of the elements after the filter cake has been spun off also shortens the service life of the fabric.
The object of the invention is to fix the fabric on its base in such a way that displacement, wrinkling and breakage are avoided.
The solution to this problem is a filter element for centrifugal cleaning filters, consisting of a carrier plate, a support grid and a filter fabric made of metal or plastic and is characterized in that the filter fabric is firmly connected to the support grid.
The drawing shows an embodiment of the filter element according to the invention.
Fig. 1 shows the top view and the elevation of a filter element in which the filter fabric and the clamping ring are only partially shown.
FIG. 2 shows a section through a filter element along line I-I of FIG. 1.
The bottom part 1 can be made of metal or plastic; with metal preferably stainless steel, with plastic preferably a glass fiber reinforced plastic. The disc is conical towards the center. In the middle is the coarse support grid 2, which can consist of both plastic and metal. A filter fabric 3 is stretched over it, which is fastened with, for example, epoxy resin or another adhesive. The adhesive is applied to the roughened plastic mesh of the support grid. The actual bonding takes place by pressing the filter fabric onto the support grid. The attachment to the periphery can be reinforced in a known manner by a clamping ring 4 which is held together by a turnbuckle 5.
However, bonding can also be carried out if the support grid 2 is made of plastic and the filter fabric 3 is made of metal. Suitable adhesives are known.
If both elements, support grid 2 and filter fabric 3 are made of metal, welding is possible. If both elements, the support grid 2 and the filter fabric 3 are made of plastic, welding can also be carried out.
Another variant of the fastening is sewing with plastic or metal threads. This also creates a good permanent connection between the support grid and the filter fabric.
The use of the filter elements described is advantageous for centrifugal cleaning filters. However, the invention need not be limited to these, since the direct connection of support grids to the filter fabric for filter elements of other filters can also be expected to extend the service life of their filter fabric.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH598576A CH603207A5 (en) | 1976-05-12 | 1976-05-12 | Centrifugal filter element with carrier plate and mesh cover |
| DE7714954U DE7714954U1 (en) | 1976-05-12 | 1977-05-11 | FILTER ELEMENT FOR CENTRIFUGAL CLEANING FILTER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH598576A CH603207A5 (en) | 1976-05-12 | 1976-05-12 | Centrifugal filter element with carrier plate and mesh cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH603207A5 true CH603207A5 (en) | 1978-08-15 |
Family
ID=4302509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH598576A CH603207A5 (en) | 1976-05-12 | 1976-05-12 | Centrifugal filter element with carrier plate and mesh cover |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH603207A5 (en) |
| DE (1) | DE7714954U1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446352A (en) * | 1980-08-11 | 1984-05-01 | United States Filter Fluid Systems Corp. | Filter leaf |
| US4461945A (en) * | 1980-08-11 | 1984-07-24 | United States Filter Fluid Systems Corporation | Filter leaf and method and apparatus for making same |
| FR2557477A1 (en) * | 1984-01-03 | 1985-07-05 | Mallard Fils Sa Ets | Industrial filter plate |
| US6581781B1 (en) | 1993-04-30 | 2003-06-24 | Tuboscope I/P, Inc. | Vibrator separator screens |
| US6607080B2 (en) | 1993-04-30 | 2003-08-19 | Varco I/P, Inc. | Screen assembly for vibratory separators |
| US7000777B2 (en) | 1998-10-30 | 2006-02-21 | Varco I/P, Inc. | Vibratory separator screens |
-
1976
- 1976-05-12 CH CH598576A patent/CH603207A5/en not_active IP Right Cessation
-
1977
- 1977-05-11 DE DE7714954U patent/DE7714954U1/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4446352A (en) * | 1980-08-11 | 1984-05-01 | United States Filter Fluid Systems Corp. | Filter leaf |
| US4461945A (en) * | 1980-08-11 | 1984-07-24 | United States Filter Fluid Systems Corporation | Filter leaf and method and apparatus for making same |
| FR2557477A1 (en) * | 1984-01-03 | 1985-07-05 | Mallard Fils Sa Ets | Industrial filter plate |
| US6581781B1 (en) | 1993-04-30 | 2003-06-24 | Tuboscope I/P, Inc. | Vibrator separator screens |
| US6607080B2 (en) | 1993-04-30 | 2003-08-19 | Varco I/P, Inc. | Screen assembly for vibratory separators |
| US7000777B2 (en) | 1998-10-30 | 2006-02-21 | Varco I/P, Inc. | Vibratory separator screens |
Also Published As
| Publication number | Publication date |
|---|---|
| DE7714954U1 (en) | 1977-09-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PFA | Name/firm changed |
Owner name: CHEMAP AG |
|
| PL | Patent ceased |