DE1863587U - WASTE WATER OVERFLOW EDGE FOR SEWAGE SYSTEMS. - Google Patents

Description

LS PA 513'336 * -7.8.62

'PATENT Attorney DiPL-ING. H. B. KAHLER

KREFELD, LEYENTALSTRASSE 23

POST CHECK ACCOUNT. FOOD · ίο55

6.8.1962 II / He

MY FILE: g2 Ί91

L J

Mederrhein Plastik GmbH. & Qo. KG., Oedt / Hdrh. Waste water overflow edge for sewage treatment plants «

The! Inflation relates to a waste water overflow edge for Sewage treatment plants. Such edges are usually made of steel and are screwed to the edges of the sewage tank. The upper edge of these overflow edges is usually saw-tooth-like cut and through these teeth the water in the basin is able to run off when it reaches the overhang.

Such steel overflow edges do not have a long service life, because they are very susceptible to corrosion. Attempts have therefore already been made to use corrosion-resistant polyethylene plastic instead of steel to use. However, this had the disadvantage that this thermoplastic had too high a coefficient of thermal expansion owns. This led to the fact that the plastic edges screwed to the edge of the clarification water basin curl and so the water did not run off over the drainage edge but between the outside of the sewage basin and the edges.

This is where the inflation kicks in. She suggests that in one off preferably glass fiber reinforced polyester plastic existing waste water overflow edge a unidirectional fabric or raw swing cords are embedded with a low coefficient of thermal expansion.

The aforementioned tissue or the Eohwing cords should preferably

ι. .- ■■

have been introduced under tension into the overflow edge. This makes it even less possible to expand the Overflow edge is guaranteed.

In detail, the innovation is based on a B in the drawing illustrated embodiment illustrated. Show it

1 shows a sewage basin with a screwed-on waste water overflow edge in a lateral vertical section.

Fig. 2 as Fig. 1, but as a front vertical section Fig. 3 in an enlarged scale over an overflow edge section and
FIG. 4 shows a section along the line IV-IV in FIG.

In a Klärwasserbefeken 1 is wastewater 2. At the front edge of the pool 3 is a sewage overflow on the outside edge 4- screwed on. In many cases, the overflow edge 4 is also attached to the inside of the pool edge 3 and not as shown in 'the drawing on the outside. Over this overflow edge 4 · the water 2 flowing out of the basin 1 reaches a drainage channel 5 and is from here into a second basin od. like (not shown) derived

The overflow edge 4 · carries transverse to its longitudinal direction Elongated holes 6, by means of which the edge can be attached to the pool edge 3 in a height-adjustable manner. For screwing the overflow edge 4-are Wing nuts 7 are provided. Instead of the wing nuts 7, conventional hexagon nuts can of course also be provided be.

In the overflow edge 4- is still according to the innovation in their A uni-directional fabric 8 is embedded in the longitudinal direction the edge 4- made of polyester plastic gives a lower coefficient of thermal expansion.

The uni-directional fabric 8 consists essentially of in Longitudinal direction of the edge 4- running threads 8a with a low coefficient of thermal expansion, which are only at larger intervals are held together by transverse threads 8b.

Instead of the uni-directional fabric, you can of course also other fabrics or raw wing strands are inserted into the edge 4 be. It is only important that they have a low coefficient of thermal expansion and thus the edge 4- one give sufficient dimensional stability at different temperatures.

The innovation is of course not limited to exclusive use on sewer headwaters, but they are captured also other application possibilities if there is a low thermal expansion is required of plastic objects.

Claims (2)

• 513 33GW. 8. Security claims 1. Wastewater overflow edge for sewage treatment plants made of preferably glass fiber reinforced polyester plastic, characterized in that in the over 1 upright (4) a vtal- directional fabric (3) with a low coefficient of thermal expansion or »Sohwingstränge are embedded. 2. upper edge according to claim 1, characterized in that the fabric (8) or the Eohwingstränge under tension are inserted into the edge (4).