DE202008017663U1 - Street inlet (gully) - Google Patents

Abstract

Street inlet (drain) with an upper inlet chamber and a lower outlet chamber separated therefrom by an inlet chamber bottom, wherein the outlet opening of the inlet chamber is substantially above the inlet chamber floor by a pipe or a siphon and a drainable outlet conduit in the outlet chamber, characterized in that a bypass (20) which can be passed through in the event of an overload of excess sewage water is provided which opens with the upper end (21) at the top into the inlet chamber (5) above the outlet opening (8 ') of the inlet chamber (5) and at the lower end ( 22) behind the valve (13, 14) in the outlet line (12) opens.

Description

The The invention relates to a street inlet (Gully), with a upper inlet chamber and one of them via a Separating bottom separate lower outlet chamber, wherein the outlet opening the inlet chamber through a pipe or a siphon clearly above the inlet chamber floor, and one with a float closable outlet conduit in the outlet chamber according to the preamble of the protection claim 1.

From the DE 36 20 182 A1 is known as a so-called road inlet, in which an upper inlet chamber and a lower outlet chamber is provided. In the upper chamber protrudes into a nozzle, so that a down flow is reached only when the upper inlet chamber is filled so far that the water level exceeds this nozzle.

Further is known in the lower area, d. H. in the outlet of the outlet chamber Provide means that form a valve with a float, which then closes when light liquid in the street inlet is present. This will prevent light liquid into the sewage system.

From the EP 0 904 471 B1 is a street inlet known in which between the upper inlet chamber and lower outlet chamber as in the DE 36 20 182 A1 a tube extends, which projects far into the upper inlet chamber, so that above floating light liquid can drain first, and thus a first separation between light liquid and water is caused in relation to the sequence of the expiration process. Furthermore, the first particles are already settling above.

But unlike the first mentioned prior art describes the EP 0 904 471 B1 as an essential novelty, that the tube also extends far into the outlet chamber down, and that until the tube opening ends below the outlet of the outlet chamber.

This is of considerable disadvantage for the following reasons. If the tube protrudes very far down into the outlet chamber, is in the outlet chamber, in which heavy metals settle and light liquids should separate by the falling, led in the tube jet of drain water so strongly swirled that it is a mixture of actually separating Substances comes. Thus a separation is not possible efficiently. As a result, light liquids through the Turbulence even pass the float valve.

worse this will continue in this known design by for the case of excessive fall water quantities the floor drains of this type have this capacity can no longer pay. This becomes critical when in heavy downpours the floor drains are overloaded are and thus the flooding of the roads initiate. As stated above, causes in heavy downpours the special tube design a turbulent mixing of actually to be separated pollutants and light liquids, so that in this case, in addition, no efficient separation more is done.

The invention is therefore the object of a different solution than in the EP 0 904 471 to propose, in which on the one hand a turbulent flow of the liquid level is prevented in the outlet chamber, so that a physical separation of heavy metals and light liquids in the outlet chamber can be done in a considerably calmer aerodynamically room. Furthermore, it is part of the task that additional constructive provisions are made, which automatically enables the road entry in an emergency situation (flood, excessive rain) to increased drainage capacity.

The Asked object is inventively by the characterizing features of claim 1 solved.

Further advantageous embodiments are in the independent claims specified.

core The invention is that in case of overload of excessive accumulating wastewater burbling bypass provided is, which with the upper end up in the inlet chamber above the outlet opening of the inlet chamber opens, and with the lower end behind the valve in the Outlet line of the outlet chamber opens.

This Bypass thus presents a fluidic short circuit of excessive accumulating water to flow through the outlet chamber is not is flowed through directly, as long as this excessive Amounts of water are incurred. In this case, the bypass according to the invention is so placed so that it is actively flowed through only when the inlet chamber must absorb more water than through the outlet opening the inlet chamber down into the outlet chamber can drain away. In this case, the water level rises in the inlet chamber namely so far that it the level of the upper orifice of the bypass reached, and thus flow directly through the bypass can. If the external water supply drops, the level in the water drops Inlet chamber so far from that again regulated over discharged the outlet opening of the inlet chamber can be.

In a further advantageous embodiment, it is stated that the pipe or the siphon between inlet chamber and outlet chamber with its Öff tion at the lower end just below the bottom of the inlet chamber ends without protruding into the outlet chamber further. As a result, the flow is down much calmed down than in the aforementioned prior art. This avoids a turbulent swirling of the heavy metals settling in the outlet chamber. Thus, the heavy metals are already effectively separated from the accumulating water. Likewise, there is no turbulence and mixing with the light liquids, so that a controlled normal operation of the thus cleaned waste water can take place.

Around calming down the flow continues advantageously configured such that the lower opening of the tube, which points into the outlet chamber, with a circumferential molded drip contour and / or a downwardly widening funnel-shaped screen is provided. That's what happens to a spontaneous widening of the flow cross-section of the water falling down through the pipe. This causes a further calming of the downflowing water, whereby a turbulence is thereby further avoided. At the same time, the tube can exit immediately below into the funnel, and the lower edge of the funnel can also turn a drip edge exhibit.

In Another advantageous embodiment is specified that the bottom lying outlet chamber via a vertical partition is divided into two parallel chambers, such that in as Settling chamber serving sub-chamber above the inlet chamber incoming liquid enters, and in the other Partial chamber, the valve is arranged.

Farther is advantageously designed that in the vertically arranged Partition wall between the settling chamber and the valve chamber has a passage opening is arranged, which serve down to the bottom of the settling chamber Part chamber runs, and up to about half the height the settling chamber is enough. Here is the continuation in the valve chamber instead. The said opening is only going until about half the height of the lower chamber, because upwards the light liquids should secrete, because these float on water.

advantageously, this passage opening can be provided with a sieve, through which particles are held. This is why it is important to to prevent coarse particles being carried along and one Ensure that the float ball's sealing seat on the valve seat is obstructed can.

In Another advantageous embodiment is provided that a second Bypass is created as a pipe, the first opening above into the settling chamber serving as the partial chamber of the outlet chamber, and its second opening from the top into the valve chamber serving partial chamber of the outlet chamber opens. About here can be overpressurbed from below Fall water the aufschwimnmende light liquid from above be pushed into the valve chamber. There is then one additional volume for light liquids available, if the volume in the upper part of the settling chamber already far with Light liquid is filled. Will this actually in the settling chamber collected light liquid in the Valve chamber overflows, so closes the valve and prevents there also its outflow into the drain line. In this case, only the available one increases Volume for light liquid. This is exactly the function of this second bypass.

In Another advantageous embodiment is specified that the lower Intersection of the main bypass with respect to the altitude is positioned below the float. About this is the excess fallwater is removed, in case of imminent flooding additional, although partially unfiltered fall water discharges to ensure. In case of imminent flooding hamper known street enemas, as in the mentioned at the beginning of the prior art, the water drainage so strong that the congestion caused by it inevitably leads to a flooding of the road. This is the road entry according to the invention help prevent it.

In further advantageous embodiment is specified that the outlet designed as a siphon whose outlet height lies above the center of gravity of the float. That's how it turns out Overall, a balanced discharge of water. Furthermore This creates an odor barrier to the main sewage system.

In Another advantageous embodiment is specified that the bypass in cross section approximately equal to the cross section of the lower outlet of the Outlet chamber, d. H. the valve chamber is. This is how it becomes the already separated light liquid over the closed valve is held back, but still becomes to the expiration of the overly accruing Water used the full cross section of the outlet pipe.

alternative to the valve ball, the float as a flap with float bodies be designed. This is for specific cases then advantageous if structurally integrates the valve function in the outlet pipe must become. For example, if the entire street entry must be designed very compact and small construction.

Around the reliable separation between water and floating Light liquid to accomplish is indicated that the float (s) of the flap and the ball designed floats have a density between 1 and 0.7 is such that the respective float buoyancy generated in water environment and in oil environment, or in light liquid environment sinks and the valve seat closes.

In advantageous embodiment is provided that the bypass outside runs adjacent to the inlet and the outlet chamber.

alternative For constructive reasons, he can also be integrated inside Pipe through the inlet and the outlet chamber through run.

The Invention is shown in a design example in the drawing and described in more detail below.

It shows

1 : Side section of the street entrance

2 Image: Top view on cut through 1

3 : Perspective view of the street entrance

1 shows a side sectional view of an embodiment of a road inlet 1 , This is embedded in the ground at the roadside or on squares and serves to drain off the water from the street or squares. This is the street entrance 1 known from a grille 2 covered. Below the cover grille 2 the road inlet consists of a barrel-shaped housing 4 in which all the necessary technical details are arranged. Under the grille 2 is a removable basket-shaped leaf trap 3 arranged. Underneath is the container of the street inlet 1 divided into several chambers. Essentially, an upper chamber is the inlet chamber 5 directly under the leaf trap 3 arranged. The inlet chamber 5 is over a dividing floor 9 separated from the lower chamber.

The lower chamber is again subdivided into a sub-chamber, which serves as an outlet chamber 6 , and a partial chamber acting as a valve chamber 7 is designed. These two lower sub-chambers are in turn by a vertical partition 15 separated from each other, but a through opening 16 having.

From the top coming drain water, which can also carry light liquids such as oils, fats, gasoline, etc., passes over the leaf trap into the upper inlet chamber 5 one. Between the upper inlet chamber 5 and the lower, serving as a settling and collecting chamber chamber 6 the discharge chamber is a pipe 8th , The pipe 8th is positioned so that the upper inlet opening 8th' clearly above the partition 9 lies. This has the function that initially the water must partially fill the inlet chamber, so that entrained light liquids floating on the water surface above with rising water level in the inlet chamber first, the inlet opening 8th' of the pipe 8th reach, and virtually through this overflow first through the pipe 8th down into the serving as settling and collection chamber chamber 6 stream. Only then does the water follow. In this way, sit down already on top of the inlet chamber 5 Solids, heavy metals, etc, which are not already from the Laubfangsieb 3 were intercepted. With continuous water supply from above, the entire liquid level then the inlet opening 8th' reach, and through the pipe down to the chamber 6 expire. The sub-chamber 6 serves as a further settling chamber for heavy metals and large heavier solids. Through the passage opening 16 , in which optionally also a fine filter or a fine sieve element can be arranged finds a further flow into the valve chamber 7 instead of. As the passage opening 16 not to the very top in the sub-chamber 6 is enough, float here, the light liquids, or fat, oil, gasoline, fuels etc on the liquid level on top, and collect in the upper part of the sub-chamber 6 , Ie. the light liquids settle in the sub-chamber 6 above, ie above the upper edge of the passage opening 16 from, or are collected there.

For in the valve chamber 7 located portion of the drain water is a drain on the valve float 14 instead of. The swimmer 14 sits on a final outward drain siphon 12 , The edge surface of the siphon on which the float rests is a valve seat 13 designed, for example, by a soft, sealing material. This float has such a density that it rises when surrounded only by water, but closes when it is surrounded by light liquid.

First, the light liquid in the sub-chamber 6 Floating above and the local volume from the edge of the through hole 16 up to the dividing floor 9 can fill. In other words, this volume represents the collection volume for the light liquids.

But fall from the outside of large volumes of water, so that the normal drain capacity down through the sub-chambers is no longer sufficient, so enters the emergency, in which to avoid a flood of the road, first, first all fall water must be dissipated as quickly as possible. At this moment, the prevention of flooding has the temporary priority over the separation between water and light liquid. At this moment, the bypass according to the invention occurs 20 in action. Its entrance opening 21 lies above the inlet opening of the tube 8th ,

Of the Water level reaches this entrance only then, if the insufficient normal drain capacity causes a backwater. The system is thus regulated without further mechanical switching means itself.

This will cause water / light liquid seeping over the pipe 8th physically bypassed only when the drain capacity over the pipe 8th is no longer sufficient, and thus the liquid level above the level of the inlet opening 8th' increases.

The bypass 20 flows through a pipe connection 22 into the drain siphon 12 , and fluidically behind the valve seat 12 into the drain siphon 12 one.

In this way creates a fluidic short circuit for this temporary emergency, so first the backwater from above to prevent or reduce a flood directly into the process 12 opens, and thus the rest of the street inlet and the passage through the chambers is bridged.

Only when the drain capacity is sufficient again, the liquid level in the inlet chamber 5 fall so far that the drain again over the pipe 8th takes place and the separation of water and light liquid and heavy metals etc again becomes active.

In the event that in the lower part chamber 6 Floating light liquid layer but dammed down, so performs a second bypass 10 to a transfer of the light liquid from serving as a collection chamber part chamber 6 in the valve chamber 9 , But even here, the light liquid floats on top, and it should be the level of the float 14 reach down, so the float closes 14 and keeps the light liquid back.

By transferring the light liquid through the second bypass 10 thus automatically increases the collection volume for light liquid, which then no longer only in the serving as a collection chamber chamber 6 but also in the valve chamber 7 is collected.

at a temporary maintenance, the so collected by the drain water vacuumed separated light liquids from above.

The design of the tube 8th which are directly at the bottom of the partition 9 ends is not only structurally different from the prior art mentioned above, but quite significantly also functionally different from it. So the exit opening knows 8th'' of the pipe 8th only one drip edge at the bottom. This causes in strong Einömung a calming of the outflowing flow down through an expansion of the flow cross-section. In the prior art, however, the tube is far in the sub-chamber 6 ushered. This leads in the prior art in strong flow to an introduction of a fluidic turbulence in the liquid of the sub-chamber 6 , As a result, the targeted there heavy metals deposition and calmed separation of light liquid is disturbed so that heavy metals and light liquids are entrained, and the swimmer can no longer efficiently separate in such entangled wastewater.

Ends, however, the outlet 8th'' directly at the level of the dividing floor 9 , so the outflow is much calmer. This can be supported by additionally, but not necessarily a tricherförmigen screen 11 directly to the outlet 8th'' attaches, and thus the outflow cross-section down steadily expanded and calmed the flow laminar according to the equation of continuity. It is also beneficial if this funnel-shaped Schwirm 11 consists of a grid eg made of metal or plastic.

2 shows a plan view of the separating tray from a sectional view from above the separating tray 9 , It is the 2 no 100% cut view too 1 but already includes a more advanced design. In this embodiment, the liquid flows into the inlet chamber 5 and from there via the pipe not directly into the lower part chamber 6 but first in an antechamber 17 , which is divided with another vertical partition.

In this further partition is then again a through opening through which the liquid further into the sub-chamber 6 etc. flows. This is the division of the lower chamber in their sub-chambers 6 and 7 and the antechamber 17 to recognize. Likewise the location of the second bypass 10 ,

there can be provided below but also more chambers, as further flowed around or through flow collecting chambers serve.

3 shows a perspective representation development. In this case, the lower drainage chamber is subdivided into 3 partial chambers, namely the settling and collecting chamber 6 , as well as the valve chamber 7 , as well as the valve chamber still upstream further antechamber 17 in which heavy metals and floating up light liquids can also collect down. In this embodiment, the passage opening 16 to the valve chamber 7 covered with a fine filter, and the passage from the chamber 6 to the antechamber 17 is covered with a coarse filter, or coverable.

1

street running (Gully)

2

grille

3

leaf trap

4

casing

5

inlet chamber

6

outlet, 1. Partial chamber of the outlet chamber as settling and collecting chamber

7

outlet, Second Partial chamber of the outlet chamber as a valve chamber

8th

pipe

8th

Inlet of pipe 8th

8th''

Outlet opening of pipe 8th

9

separating base

10

second bypass

11

Tricherförmiger umbrella

12

Procedure, siphon

13

valve seat

14

Valve ball / float

15

vertical partition wall

16

Through opening (with fine filter)

17

antechamber

18

Through opening (with coarse filter or coarse filter)

20

bypass

21

Entry opening to the bypass 20

22

Junction of the bypass 20 in drain / siphon 12

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3620182 A1 [0002, 0004]
• - EP 0904471 B1 [0004, 0005]
• EP 0904471 [0008]

Claims (14)

Street inlet (drain) with an upper inlet chamber and a lower outlet chamber separated therefrom by an inlet chamber bottom, wherein the outlet opening of the inlet chamber is substantially above the inlet chamber floor by a pipe or a siphon, and a drainable outlet conduit in the outlet chamber, characterized in that a bypass which can be overloaded in the event of an overload of overflowing wastewater ( 20 ) is provided, which with the upper end ( 21 ) at the top of the inlet chamber ( 5 ) above the outlet opening ( 8th' ) of the inlet chamber ( 5 ), and with the lower end ( 22 ) behind the valve ( 13 . 14 ) in the outlet pipe ( 12 ) opens. Road inlet (drain) according to claim 1, characterized in that the pipe ( 8th ) or the siphon between inlet chamber ( 5 ) and outlet chamber ( 6 ) with its opening at the lower end ( 8th'' ) directly below the partition ( 9 ) of the inlet chamber ( 5 ) ends without entering the outlet chamber ( 6 ) further into it. Road inlet (drain) to 2 characterized in that the lower opening ( 8th'' ) of the pipe ( 8th ), which in the outlet chamber ( 6 ), with a circumferentially formed drip contour and / or a downwardly widening funnel-shaped screen ( 11 ) is provided. Street inlet (drain) according to 1, 2 or 3, characterized in that the lower outlet chamber via a vertical partition wall ( 15 ) into two parallel chambers ( 6 . 7 ) in such a way that in a serving as a settling chamber chamber ( 6 ) above the inlet chamber ( 5 Entering entering liquid, and in the other sub-chamber ( 7 ) the valve is arranged. Street inlet according to one of the preceding claims, characterized in that in the vertically arranged partition wall ( 15 ) between settling chamber ( 6 ) and valve chamber ( 7 ) a passage opening ( 16 ) is arranged, which extends down to the bottom of the settling chamber and up to about half the height of the settling chamber. Street inlet according to claim 4, characterized in that the passage opening ( 16 ) is provided with a sieve. Street inlet according to one of the preceding claims, according to 4 or 5, characterized in that a second bypass ( 10 ) is applied as a tube, the first opening in the top as the settling chamber ( 6 ) serving partial chamber of the outlet chamber, and whose second opening from the top into the valve chamber ( 7 ) serving partial chamber of the outlet chamber opens. Street inlet according to one of the preceding claims, characterized in that the lower junction ( 22 ) of the bypass ( 20 ) with respect to the height below the float ( 14 ) is positioned. Road inlet according to one of the preceding claims, characterized in that the outlet pipe ( 12 ) is designed as a siphon whose outlet height above the center of gravity of the float ( 14 ) lies. Street inlet according to one of the preceding claims, characterized in that the bypass ( 20 ) in cross section approximately equal to the cross section of the outlet conduit ( 12 ) is the outlet chamber. Road entry after one of the previous ones Claims, characterized in that the float as Flap is designed with float bodies. Street inlet according to one of the preceding claims, characterized in that the float (s) of the flap and the ball-shaped float have a density of between 1 and 0.7 such that the respective float creates buoyancy in the water environment and sinks in the light-liquid environment and the valve seat ( 13 ) closes. Street inlet according to one of the preceding claims, characterized in that the bypass ( 20 ) runs outside of the inlet and the outlet chamber. Street inlet according to one of the preceding claims, characterized in that the bypass ( 20 ) runs inside as a pipe through the inlet and the outlet chamber.