DE3347444A1 - Plastic well filter pipe - Google Patents
Plastic well filter pipeInfo
- Publication number
- DE3347444A1 DE3347444A1 DE3347444A DE3347444A DE3347444A1 DE 3347444 A1 DE3347444 A1 DE 3347444A1 DE 3347444 A DE3347444 A DE 3347444A DE 3347444 A DE3347444 A DE 3347444A DE 3347444 A1 DE3347444 A1 DE 3347444A1
- Authority
- DE
- Germany
- Prior art keywords
- well filter
- filter tube
- slots
- tube according
- zigzag
- 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.)
- Withdrawn
Links
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005266 casting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- 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
- B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- 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
- B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
-
- 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
- B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/16—Component parts of wells
- E03B3/18—Well filters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
RUDOLF BARAINSKY Ringstraße 5RUDOLF BARAINSKY Ringstrasse 5
4973 Ulotho4973 Ulotho
23.12.1983December 23, 1983
Brunnenfilterrohre aus Kunststoff bestehen normalerweise aus extrudierten Rohren - vorzugsweise PUC -, welche nach ihrer Herstellung in separaten Arbeitsgängen auf Länge geschnitte, mit Muffen und diese wiederum mit Gewinde, versehen werden. Das der Gewindemuffe gegenüberliegende Ende wird meistens mit einem zum Muffengewinde passenden Außengewinde versehen. Die für die Verwendung des Rohres als Brunnenfilterrohr jedoch entscheidende Bearbeitung ist das Einschlitzen mittels Kreissäge oder Scheibe. Diese Schlitze, meist im Winkel von 90° zur Rohrachse eingesägt, müssen eine bestimmte offene Fläche im VErhältnis zur Gesamtfläche des Filters haben (nach DIiM). Durch das Einsägen mittels Kreissägeblatt oder Kreisscheibe entstehen jedoch Nachteile, die dadurch offenkundig sind, daß die Schlitze im Inneren des Rohres stets kürzer als außen sind, obgleich der umgekehrte Zustand aus Gründen des Fließverhaltens zu bevorzugen wäre, Außerdem sind die Schlitze in ihrer Weite der Dicke des Sägeblattes entsprechend, bestenfalls innen und außen gleich weit, meist jedoch außen sogar weiter als innen. Das führt dazu, daß sich z. B. Sandkörner, die einerseits wegen ihrer Kleinheit in einer Dimension leicht durch den Schlitz hindurchgehen, andererseits den Schlitz nach und nach verstopfen, wenn sich das Korn während seines Durchganges dreht, so daß eine andere, größere Dimension des Kornes, die Schlitzweite übersteigend, wirksam wird, wenn sich also ein längliches Korn während des Durchganges aufrichtet und im Schlitz verklemmt .Well filter tubes are usually made of plastic from extruded tubes - preferably PUC -, which after their production in separate operations Cut to length, provided with sleeves and these in turn with threads. The opposite of the threaded socket The end is usually provided with an external thread that matches the socket thread. The for use of the pipe as a well filter pipe, however, the decisive processing is the slitting with a circular saw or Disc. These slots, usually cut at an angle of 90 ° to the pipe axis, must have a certain open area in relation to the total area of the filter (according to DIiM). By sawing in with a circular saw blade or Circular disk, however, creates disadvantages which are evident in that the slots in the interior of the tube are always shorter than outside, although the reverse state would be preferable for reasons of flow behavior, In addition, the width of the slots corresponds to the thickness of the saw blade, ideally inside and outside the same distance, but usually even further on the outside than on the inside. This leads to the fact that z. B. grains of sand, the one hand because of their small size, easily pass through the slot in one dimension, and the other Gradually clog the slot as the grain rotates during its passage, so that another, larger dimension of the grain, exceeding the slot width, becomes effective when there is an elongated grain erects during the passage and jammed in the slot.
Weiter sind derartige Filterrohre bekannt, die auf ihrer Außenseite Längsrippen haben, wodurch die äußere Schlitzlänge vergrößert wird.Such filter tubes are also known which have longitudinal ribs on their outside, whereby the outer slot length is increased.
Die vorliegende Erfindung löst die Aufgabe, die vorstehenden Mängel zu überwinden und die offene Fläche, besonders innen, drastisch zu vergrößern, sowie die Schlitzweite von außen nach innen zunehmen zu lassen, indem die Schlitze nicht mit der Säge ο» ä. hergestellt werden, was naturgemäß gerade Schnitte ergibt, sondern indem die Schlitze im Zick-Zack verlaufen, was bei der Herstellung der Filter in einer Gießform (Spritzgießform) erreichbar ist. Durch den Zick-Zack-Verlauf der Schlitze wird eine erhebliche Vergrößerung der wirksamen Schlitzlänge erreicht bei gleichbleibendem Rohrdurchmesser. Ein Zick-Zack-V/erlauf des Schlitzes mit jeweils BD0 aufwärts und 60° abwärts ergibt beispielsweise eine Verdoppelung der wirksamen Schlitzlänge. Damit wird erreicht, daß die Zuflußrate pro Längeneinheit des Rohres entsprechend zunimmt, so daß für den gleichen Durchsatz ein wesentlich kürzeres nach dem vorgenannten Beispiel nur halb so langes Filterrohr der neuen Ausführung benötigt wird.The present invention solves the problem of overcoming the above deficiencies and drastically enlarging the open area, especially inside, as well as increasing the slot width from the outside to the inside by not making the slots with the saw or the like naturally results in straight cuts, but because the slots run in a zigzag, which can be achieved in the manufacture of the filter in a mold (injection mold). Due to the zigzag course of the slots, a considerable increase in the effective slot length is achieved while the pipe diameter remains the same. A zigzag run of the slot with BD 0 upwards and 60 ° downwards, for example, results in a doubling of the effective slot length. This ensures that the inflow rate per unit length of the tube increases accordingly, so that a much shorter filter tube of the new design, which is only half as long as in the above example, is required for the same throughput.
Die Herstellung der Rohre in Gießformen (Spritzgießformen) ermöglicht auch, die Schlitze im Rohrinneren länger und gleichzeitig weiter zu machen, als außen. Damit wird nicht nur das Fließverhalten verbessert, sondern es verringert sich auch die Gefahr des Verstopfens der Filter.The production of the pipes in casting molds (injection molds) also enables the slots in the pipe interior to keep going longer and at the same time than outside. This not only improves the flow behavior, it also reduces the risk of clogging the filters.
33474U33474U
In der Abbildung 1 ist die bisher übliche Ausführung dargestellt, und es bedeutet:Figure 1 shows the previous version shown, and it means:
a = Filterrohra = filter tube
b = innere Schlitzlänge (kürzer als äußere) c = äußere Schlitzlängeb = inner slot length (shorter than outer) c = outer slot length
d = Rohrujanddicked = Rohrujand thickness
e = Schlitziueite (innen und außen gleich) f = Sägeblatte = Schlitziueite (inside and outside the same) f = saw blade
Abbildung 2 zeigt die erfindungsgemäße Ausführung; darin bedeute+:Figure 2 shows the embodiment according to the invention; in which + means:
g = Wand des Filterrohres in Abwicklung dargestellt h = Zick-Zack-Schlitzg = wall of the filter tube shown in development h = zigzag slot
i = Schnitt durch die Rohriüandung mit Schlitz k = Schlitzüjeite außeni = section through the pipe wall with a slot k = outside slit
1 = Schlitzweite innen (größer als außen) m = äußere Schlitzlänge1 = slot width inside (larger than outside) m = outer slot length
η = innere Schlitzlänge (länger als außen) ο = Rohruanddickeη = inner slot length (longer than outer) ο = pipe edge thickness
Zusätzlich zu dieser Gestaltung der Brunnenfilter kann eine l/errippung des Rohres dergestalt vorgenommen werden, daß nicht nur außen, sondern auch innen im Rohr Rippen mit vorzugsweise dreieckigem oder gerundetem Querschnitt'so verlaufen, daß sie die Schlitze kreuzen, beim Zick-Zack-Schlitz also auch vorzugsweise im Zick-Zack verlaufend .In addition to this design the well filter can the pipe is ripped in such a way that that not only on the outside, but also on the inside of the tube, ribs with a preferably triangular or rounded cross-section run that they cross the slots, so in the case of the zigzag slot preferably also running in a zigzag .
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3347444A DE3347444A1 (en) | 1983-12-29 | 1983-12-29 | Plastic well filter pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3347444A DE3347444A1 (en) | 1983-12-29 | 1983-12-29 | Plastic well filter pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3347444A1 true DE3347444A1 (en) | 1985-07-11 |
Family
ID=6218379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3347444A Withdrawn DE3347444A1 (en) | 1983-12-29 | 1983-12-29 | Plastic well filter pipe |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3347444A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AP116A (en) * | 1988-06-07 | 1991-02-13 | Kothmann Antonius B | Apertured pipe segment. |
WO1995008045A1 (en) * | 1993-09-14 | 1995-03-23 | Overseas Water Services Limited | Well filter with prepacked filter element |
US20150158196A1 (en) * | 2013-12-10 | 2015-06-11 | Christopher Mark Hayden | Non-Linear Slotting Profiles for Pipe and Pipe Liners |
-
1983
- 1983-12-29 DE DE3347444A patent/DE3347444A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AP116A (en) * | 1988-06-07 | 1991-02-13 | Kothmann Antonius B | Apertured pipe segment. |
WO1995008045A1 (en) * | 1993-09-14 | 1995-03-23 | Overseas Water Services Limited | Well filter with prepacked filter element |
US20150158196A1 (en) * | 2013-12-10 | 2015-06-11 | Christopher Mark Hayden | Non-Linear Slotting Profiles for Pipe and Pipe Liners |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee | ||
8180 | Miscellaneous part 1 |
Free format text: IN HEFT 51/87, SEITE 12078, SP. 1: DIE VEROEFFENTLICHUNG IST ZU STREICHEN |
|
8139 | Disposal/non-payment of the annual fee |