DE1609090A1 - Backflow protection for sewer systems - Google Patents

Description

Fa. Ewald Drockmann, Höretiaar / tfeetf ο, Lütgen-EecÄ 1

"Backflow protection for sewerage ¹

The invention relates to a backflow preventer for sewer systems with one in drainage behind backflow valve built into the caisson.

Backwater safeguards for sewer systems are required to a large extent in buildings that are arranged in lowlands, so that in the event of sudden, severe or long-lasting complaints, the water can be backed up from the sewer system into the basement. Backwater gauges are also required for buildings that are in the vicinity of rivers and Vaeser courses, where the groundwater can also enter the basement through the sewerage system when the groundwater level rises.

ORiGlMAL BATHROOM

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This problem is known and has hitherto been solved in two ways, namely either the sewer systems, ie the drainage surface of the caisson in the basement, were closed by a closure plate which was so tight that the water could not run out. It is obvious that such a device ^{1 is} only imperfect, since it is necessary for the fuse to be installed under appropriate temperature conditions and therefore not to work automatically according to the water level. The disadvantages of such safeguards have been recognized and it has also been proposed to use non-return valves, which are usually made of metal, but have also already been made of plastic and which work with a plate that prevents the water coming from the caisson, for example if the boar is used as a laundry room, they should allow, but should prevent the water from flowing back. Apart from the fact that these constructions are extremely costly and can therefore only be installed with difficulty in normal residential buildings, for example, these devices also have the disadvantage that pieces of wood and the like are often taken along when backwatering occurs and now slip between the valve bodies, ie the flap. and set the valve seat so that the valve leaks and is in no way absolutely safe

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Closure of the canal allows. These bodies have also not caught on in practice.

The invention is based on the object of providing a return valve which is not expensive, which works automatically, in which clogging is not possible and which can finally be cleaned quickly, ie easily washed, so that maintenance can also be carried out by laypeople is "Finally, it should valve of the invention also subsequently so far can be equipped with valves equipped old houses with the new, safe operating valve in a rapid manner in ready existing lines used his _sixth

This object underlying the invention is achieved by one inserted into the drain line, made of elastic one Material existing «tubular valve body dissolved, there at its rear end seen in the direction of flow has a floating body on its lower side, which closes the opening of the rear end when the Vaes level rises in the drainpipe. .

According to the invention it is further provided that the The backflow valve consists of a piece of pipe that can be inserted into the normal drainage line and that has a

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having closable opening provided control port. Finally let it be provided that the longitudinal axis of the control nozzle and the longitudinal axis of the pipe piece Include such an angle with each other that with a perpendicular arrangement of the control port axis the pipe piece has the necessary gradient.

It is obvious that with the new facility a backflow valve is created that can be easily inserted into existing lines and that continues due to its constructive development a safe sealing of the pipe cross section against im Backwater that occurs without this the outflow of normal water from the caisson in is severely hindered. It is obvious! that by the fact that this valve according to the invention to a large extent Dimensions can be made of plastic, a fast, inexpensive construction is possible and continues to do so created a corrosion-proof design of the valve and that by the arrangement of the control port quick maintenance of the part of the pipe, actual valve body becomes possible «whereby this Maintenance can also be carried out by laypeople and the actual valve in the fastest way by for example adhering mud or sand can be freed.

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* ⁵ Γ 1608090

The actual design of the valve according to the invention is characterized in that an inlet conically tapering towards the rear, to which the valve body is connected, is provided in the front part of the pipe section wide outflow gap, the upper lip of the outflow gap being extended over the lower outflow lip and made of a soft material _B eo that it overhangs above the lower lip. The floating body arranged in the area of the lower outflow lip can be dimensioned according to the size of the actual valve body, ie according to the weight of the lower outflow lip to be lifted by it and pressed against the upper lip.

The valve body is preferably made in its entirety of a soft material, which means that it is calibrated corresponding to the flow of liquid flowing out of the caisson can expand and thereby the Durohflussqu section from the caisson as little as possible with special needs. Due to the fact of the choice of the soft plant toffee it is still achieved that when occurring Backwater and closure of the Veatilee the water pressure not only acts on the wide flood gap and this by pressing the two outer

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the river lips are squeezing shut, but the water pressure is also acting on the tubular body dee actual vent 11 it and now presses this tubular body shut, so that a seal over a large length of the valve path and is achieved with the greatest possible certainty. The overhanging lip prevents the entry of rough ones Dirt particles in the valve body, whereby even then » if, which is almost impossible, »a bit of wood in the valve body is »a should» due to its large size Sealing surface, which is achieved by the pressure of the walls of the valve body, this wooden bag like this is tightly enclosed with soft material that anyway a seal occurs.

Preferably, the valve body itself is sleeve-like and overlaps with its sleeve the al * Plug-in trained bath of the inlet nozzle, the valve body at this inlet connection through a snap fastener can also be secured * The The inlet connection is preferably located in front of the control connection and the valve body is below the control Nozzle, so that the valve body can be easily removed from the Ejulaufstutsen through the control nozzle is. This ensures that quick cleaning of the valve body and the surrounding area Bohr ·· is possible, whereby of course the

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The control bag »ene in adaptation to the one from the control the valve body to be pulled out is selected.

The pipe section, the control connection and the inlet connection preferably consist of one part and are made of plastic cast, eo that a cost-effective production is possible. * -

Further advantages and features of the arrangement according to the invention go from the following description on the basis of the a schematic formation showing drawing.

In the drawing, 1 denotes a part of a drainage line which begins at the schematically indicated caisson 2 and leads to the drainage pipe 3. In this line 1 the actual check valve k is arranged "which consists of a pipe section 5" on which a control port 6 is arranged. The control port 6 is locked by a screw cap 7, the longitudinal axis of the control port 6 and the longitudinal axis of the pipe section 5 enclose such an angle with each other that when the axis of the control port 6 is installed and the axis of the control port 6 is installed in a perpendicular position, the pipe section 5 has the required slope.

In the pipe section 5, an inlet connection 8 is formed, which is conical from the inner wall of the RohretUckea 5

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towards the control le cha tapered and thus creates an insertion end for the actual valve body 9. This valve body 9 consists of the sleeve-like ends 10 and an essentially tubular middle part 11, which opens into a wide outlet gap 12 with the lips 13 and 1 * t upper lip % h extends beyond the lower lip and hangs in front of this lip, so that when water suddenly flows in, this flap formed by the lip 14 lies in front of the opening of the outlet gap 12. A floating body 15 is arranged on the lower lip! which consists of a ball that corresponds to the size of the pipe and the weight of the valve part to be lifted by it. The connection between the socket end 10 and the insertion end 8 of the inlet connection can be secured by an additional fuse.

The way in which the valve works can already be seen clearly from the drawing. The valve sets the through the Arrow F indicated normal drainage of the water hardly any resistance, since the valve body of the Can adjust size of water flow. In practice the outlet gap 12 is also already in the idle state stand open. Meets in the line * from part 3 of the line coming here, a back-thawing is done through the rising water level of the floating bodies 15

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. ben now and presses the lower Lipp · 13 to · di interior wall of the upper lip \ k _t where at the same time sets by the water pressure the 14gebildete by the lip-like extension in front of the overlap Ausflußspalt 12th Since the valve body 9 consists in its entirety of a relatively soft, elastic and resilient plastic, the water pressure acting on this valve body causes the valve body to be compressed, so that the valve body acts as a seal over a large part of its entire length.

It can be seen that even if minor impurities such as stones, pieces of wood, etc. are in spite of everything Precautions should be taken into the valve body due to the elastic contact of the turns of the valve body to each other a perfect Sealing is achieved »-

The locking device 7 on the control door can be made of transparent plastic material, so that a tight control of the operation of the valve and the degree of soiling of the valve is possible, since especially with backflow protection, heavy soiling from sludge floating up in the sewer system is expected become mud. The valve can be cleaned by opening the control tube «6 and Sntaehae

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of the actual valve body 9 from the inlet connection 8 take place, at the same time also the interior of the valve body can be cleaned. This maintenance work can be carried out by a layperson * as the valve is easily accessible and easy to assemble »

Of course, the invention is not limited to the illustrated embodiment, but rather it In contrast, further changes are possible.

Claims

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Claims (1)

16Ϊ9090 Patent claims 1. Backflow preventer for sewer systems with an in Flow direction built in behind the sinkholes Backflow valve, marked ^ through one into the Drain line (1, j) ainesetzfen, auselastic Material existing Vontilköfper (9), the his going in flow direction from the rear end its lower side has a floating body (15), the one at the water level in the drainpipe _t the opening of the rear end (at 12) closes * 2. Backflow preventer according to claim 1 _f characterized in that the RÜcksiauventil (9) is arranged in a pipe section (5) which can be inserted in the normal Abfliaßleitung- and has a control bag (6) provided with a closable opening (7) _c 3 "Ruckstettoicli-srußg na cl \ claims 1 and 2, thereby .g & mark £ chii £ tj that di *? The longitudinal axis of the control nozzle (6) and the longitudinal axis of the rolu'3tücke8 (5) "in an eolcheti angle isitßinonSer * © ifts5chliiii3 © n _f that bsi vertical Konirolisttiisenachso the pipe section (5) has the necessary slope, 4. RÜokstausiciierung according to claim 1 bie 3, characterized 0 0 9 81 6 / C 2 UB bad ORiGiNAL _Λ - characterized in that in the front part of the Rohretückee a rearwardly conically tapering A barrel (8) is provided on which the valve body (9) is connected « Device according to claim 1 to 4, characterized ^ characterized, that the valve body opens on its outlet side to a wide outlet gap (i2). 6c backflow protection according to claim 1 to 5 »thereby characterized in that the upper Aueflußlippe (i4) over the lower lip (i3) is elongated and made of soft Material. 7. Backflow protection according to claim 1 to 6, characterized in that Sf ^ 222S2i £ = 2 ^e i * ^daö the float (15) is designed as a two-thirds ball. 8. Backflow protection according to claim 1 to 7 »£ * through “ ^{That the} valve body is made of a soft material. Backflow protection according to claims 1 to 8, characterized in that ^the valve body (9) overlaps, like an opening, the tuck-in end of the inlet socket (8) and is additionally secured by a plug-in connector. 009816/0245 bathroom oreGiNAi ^: - 13 - 10. Backflow protection according to claim 1 bie 9 »characterized by S2iS22 ⁿ 22iS ^ 2 £ i» ^that the pipe section (5), the control connector (6) and the inlet connector (8) are made of plastic in one part. ο backflow protection according to claim 1 to 10, characterized. SSfe2225 £ i £ ^ 2 £ i · that the inlet connection (8) to dta Control port (6) and the valve body (9) are arranged below the control port (6). 00981 & / G245 "Blank page COPY