DE202004007793U1 - Closure for the side inflow into a drain shaft, to prevent the escape of odors, has a filter material held by a carrier between the perforated wall of the base body and the inserted trap body - Google Patents

Abstract

The closure (1) for a side inflow at a drain channel shaft, to filter rising gases and suppress odors, has a base body (2) with a shrouding wall and closed at the bottom by a valve unit (13). The wall has a number of passage openings (24). A trap body (5) is inserted into the base body, with openings (12) to allow water to pass through to the valve unit. A filter material (4) covers the wall openings, to absorb odors, of an active carbon mat material, held in place by a carrier (3).

Description

The invention relates to an odor trap for filtering gases rising from a manhole, in particular page enemas a sewer.

Sewers are used to drain sewage, what rainwater and process water can be. The wastewater is usually a sewage treatment plant supplied where it is reprocessed. Such sewers are open at the top so that rainwater can run in. Deposits form in each sewer, one of which is more unpleasant Smell comes out, which over the manholes and the enemas can get outside. With sewers, which are also process water derive comes additionally nor the smell of feces as well as washing and rinsing water.

FR 2 603 634 A1 is an odor trap known of a basic body for insertion in a manhole and one inserted in the base body Includes filter element for collecting particles. The basic body and an attachment attached at the bottom of the filter element form a siphon. The Approach has a closed lid with which it is attached to the filter element is attached, openings in the Filter element for the outflow of water arranged radially outside the lid are. When the siphon is filled with water, exhaust gases can flow upwards do not escape.

The DE 198 17 898 A1 shows an odor trap for a street channel, which has a base body and a floating body used therein with a filter element. The base body forms an annular chamber for the temporary storage of water and has a conical sealing surface against which the floating body can seat with a corresponding counter surface. The annular chamber is usually at least partially filled with rainwater so that the floating body floats on the waste water. Gas escaping upwards from the sewage channel flows through the activated carbon filter arranged in the floating body above the sewage level.

From the DE 100 23 866 A1 an odor trap is known which comprises a hanging device and a collecting housing connected to it. In the bottom of the collecting housing, tubular water drains leading into the sewer shaft are provided, which have check valves at their ends. A larger opening is also provided adjacent to the water drains, into which an air filter insert with activated carbon filter mats is inserted. Gas rising from the sewer shaft flows through the air filter insert, the activated carbon filter mats absorbing unpleasant odors.

It is an object of the present invention Odor trap of the type mentioned at the outset for filtering out Exhaust gases rising up a manhole, especially for side inlets of a sewer, propose that easily adapt to different installation situations can be adjusted, has good filter properties and at the same time is simply constructed and is therefore inexpensive to manufacture.

This object is achieved with a Odor trap for filtering ascending from a manhole Exhaust gases solved, full

• - one body with a circumferential wall facing down from a valve unit is complete and over its circumference has a plurality of openings,
• - on in the main body used collecting body, of the openings for the passage of water to the valve unit, and filter media for absorbing gas odors, which are arranged in such a way that they cover the openings.

Such an odor trap offers the advantage that the filter means are arranged coaxially to the base body can be so one versus the Cross sectional area of the basic body enlarged reaction area to Absorbing gas odors to disposal stands. The passage area of the openings should be as possible be great. Thus, the odor trap according to the invention also for smaller ones enemas, for example for page enemas into a manhole on the roadside, well suited. Another advantage is that the odor trap simply to different installation situations, i.e. Inlet cross sections can be customized. The filter media can be inside or outside of the basic body be arranged.

According to a preferred embodiment the filter means comprise an activated carbon filter. To a simple one Installation in the base body to allow the filter means are preferably in the form of a circumferential mat designed. This is arranged and extends coaxially to the base body at least about the half the axial length of the basic body. So it becomes a particularly large one reaction surface for absorbing gas odors to disposal posed.

The filter media are preferred between the wall of the base body and one with the main body connected supporting element, wherein the supporting element in the overlap area breakthroughs with the filter media for the passage of exhaust gases from the manhole. there is a circumferential annular chamber between the support element and the base body formed in which the filter means are arranged. In concrete terms is the annular chamber through a radially outwardly offset jacket section in the basic body formed in which the filter means are completely absorbed. alternative could do this the annular chamber also by a corresponding inward Section be formed in the support element.

The support element is fixed to the base body connected and has a flange section for hanging in a manhole. The flange section is designed in such a way that he can be hung in a standardized sewer shaft. adjustments to any cross-section, for example rectangular, round or variable contours are possible. This Design has the advantage that only the support element the channel inlet to be sealed accordingly must be adjusted during the basic body to be fastened with this can always have the same shape. Several basic bodies can also be included Filter means are connected to a support element, so that a greater gas throughput is achieved. Carrying element and base body are preferably below the annular chamber connected to one another, all known releasable connecting means, such as screw connections. After a alternative execution can also the basic body directly with a corresponding flange section in a manhole hooked become. The supporting body could in this case, be inserted loosely into the base body.

The support element has in the connection to the flange section a tubular section that the annular chamber axially covered and its cross section adapted to the cross section of the base body is, the cross sections can be any. The Breakthroughs of Supporting element and the base body are in the axial overlap area with the filter media. So can the gas rising from the channel through the breakthroughs and the filter media in the interior of the body and from there odorless get into the atmosphere.

According to a preferred embodiment are the breakthroughs of the support element or the openings of the base body in such a way designed to prevent water from entering the filter media. In this way, the filter media always remain fully functional. The breakthroughs of the Support element or the breakthroughs of the basic body above the openings arranged the collecting body, to prevent incoming water gets to the filter media and affects their effectiveness. It is provided that the passage area of the openings of the Support element or the breakthroughs of the basic body are each larger than the cross-sectional area of the basic body. So a big one Volume flow of rising gases are filtered so that the Also used for sewer inlets with relatively smaller Cross sectional area worth.

In concrete terms, the collecting body is included a flange part on the flange portion of the support element or the basic body on. It is used to collect leaves and other solids get into the sewer inlet. The collecting body can be opened for emptying can be easily pulled out of the base body using a handle. The collecting body is designed such that between the filter means or the support element and the trap an annular space is formed. So they can gases flowing through the filter medium to the openings in the collecting body and through this escape into the environment. The collecting body is preferably conical designed.

According to a first embodiment the valve unit is designed and has the shape of a siphon a valve cover, which rests in a circumferential ring trough of the base body. Water in the ring trough forms a seal against aufströmende Gases, trailing water after reaching the inner ring edge drain into the manhole can. The peripheral jacket section of the valve cover preferably has a smooth surface. Inflowing Water can still drain off, because gaps always form due to manufacturing tolerances that flow the water can. Alternatively, the jacket section of the valve cover also a wavy profile have so that there is a larger passage area for flowing water results. The valve cover is preferably connected by means of connecting elements the collecting body connected. In this way, the valve cover when inserting of the collecting body securely placed in the ring trough.

According to an alternative second embodiment the valve unit has a floating body which makes the outlet gas-tight closes. If water in the collecting body and from there into the main body arrives, the float floats due to its lower density so that the outlet is opened. The water can drain into the manhole. Stops the water supply, for example because it stops to rain, the float lowers with the water level until he closes the outlet again gastight. It is provided that the floating body is designed in such a way that it faces an outlet Edge is self-centering. For this purpose, the floating body can be spherical or a hollow sphere be designed. A plastic, for example, is suitable as the material. To prevent the float from falling through the outlet he has a larger diameter has as the outlet. It is provided that the collecting body is designed in this way is that the floating body enough Has space to float upwards in the event of water ingress. For this the Bottom of the collecting body be designed concave so that the floating body in the cavity thus formed can immerse. The advantage of this embodiment is that even large volume flows quickly from the main body drain into the manhole can. The higher the water level in the base body, the more the float swims on so that the outlet is also released more and again larger amounts of water flow away can.

According to a preferred embodiment are the basic body and / or the supporting element and / or the collecting body made of plastic, in particular Polyethylene (PE), fiberglass (GRP), polypropylene (PP) or Polyphenylene sulfide (PPS) manufactured. Plastics offer the advantage that they have a low density and are therefore light. As a manufacturing process deep-drawing is particularly suitable, since this creates large lots simple and inexpensive can be produced.

A preferred embodiment will be explained with reference to the drawing below. Here shows

1 an odor barrier according to the invention in longitudinal section according to a first embodiment;

2 Parts of the odor barrier 1 in an axially exploded view and

3 an odor barrier according to the invention in longitudinal section according to a second embodiment.

1 shows an odor trap 1 who have a basic body 2 , a support element 3 , between base body 2 and support element 3 held filter media 4 and a collecting body inserted into the supporting element 5 includes. The basic body 2 is with the support element 3 using lanyards 6 attached in the form of screw connections. The support element 3 is again with a flange section 7 against a shoulder 8th a sewer inlet 9 supported. The loosely hung catcher 5 lies with a flange part 11 on the flange section 7 of the support element 3 on. The flange part 11 , contrary to the illustration, also flush with the flange section in a horizontal plane 7 be arranged so that water can easily penetrate into the collecting body 5 can break in. For this, the flange section 7 have a corresponding recess in which the flange part 11 rests. The catcher 5 serves as a sieve for collecting solids, such as waste or leaves, with water at the same time through appropriate openings 12 to an underlying valve unit 13 can drain off. A handle 10 in the form of a cross member is arranged at the upper end and is used to insert or pull out the collecting body 5 into and out of the base body 2 , The catcher 5 has a variety of circumferential openings 12 , so that a large water volume flow can pass through. The openings 12 are at a distance from the ground 18 arranged so that in the collecting body 5 solid objects do not close the openings.

The valve unit 13 that have a lower outlet 14 of the basic body 2 is sealed airtight by a circumferential ring trough 15 of the basic body 2 and a valve cover inserted into it 16 educated. Here is the valve cover 16 about lanyards 17 , for example in the form of a chain, with a bottom 18 of the collecting body 5 connected so that when the catcher body is inserted into the ring trough 15 to be led. The valve cover 16 has a surrounding jacket section 19 with a smooth surface 21 that in the ring tub 15 rests. In the ring tub 15 Any water present forms a seal against inflowing gases, with water running behind reaching the inner ring edge in the sewer shaft 9 can drain off.

The basic body 2 is essentially tubular and has a circumferentially closed jacket section at the lower end 22 and an overlying radially recessed jacket section 23 with a variety of breakthroughs 24 , Between the upper section of the jacket 22 and the support element 3 is an annular chamber 25 formed in the filter medium 4 are held. The filter media 4 are designed in the form of one or more mats made of activated carbon. The radially inner support element 3 has following the flange section 7 a tubular section 26 who the ring chamber 25 axially covered and its cross section to the cross section of the base body 2 is adjusted. In this tubular section 26 are also a number of breakthroughs 27 provided that - just like the breakthroughs 24 of the base body - in the axial overlap area with the filter media 24 lie. The gases rising from the channel can pass through the openings 24 of the basic body 2 into the filter media 4 flow where the gas odors are absorbed. From here, the gases then pass through the breakthroughs 27 in the support element 3 and the openings 12 in the collecting body 5 into the atmosphere. The described flow path of the gases emerging from the manhole is shown by the arrows. So that there is enough space between the support element 3 and the trap 5 is available for the flow of gases, the collecting body 5 conical.

It is envisaged that the breakthroughs 27 of the support element 3 and the breakthroughs 24 of the basic body 2 above the openings 12 of the collecting body 5 are arranged. In this way it is easily prevented that inflowing water reaches the filter media and impairs their effectiveness. The passage area of the breakthroughs 24 . 27 is as large as possible so that a large volume flow of rising gases can be filtered.

2 shows the unit consisting of support element 3 , Activated carbon mat 4 and basic body 2 partially nested for illustration. The same components are provided with the same reference numbers as in 1 , to whose description reference is made. It can be seen that the activated carbon mat 4 between the support element 3 and the body 2 is pinched. For this, the activated carbon mat 4 first in the radially outward section of the jacket 23 inserted, facing down against an encircling shoulder 28 is supported. Then the support element 3 in the main body 2 introduced and with the basic body by 2 screwed so that there is a compact unit. This can now be used in an inlet of a manhole. Finally, the collecting body, not shown here, including the valve cover is hung in the supporting element.

In 3 is an odor trap 1 shown according to an alternative embodiment. This largely corresponds to the odor trap 1 , to the description of which reference is made. Identical components are provided with identical reference numbers and differing components with reference numerals deleted by one. In contrast to the valve unit after 1 indicates the present valve unit 13 ' a float 29 on the outlet 14 sealed gastight. The floating body 29 is spherical and sits on one of the outlet 14 forming peripheral edge sealing. When water flows into the base body 2 it floats due to its lower density and gives the outlet 14 free so that the water in the manhole 9 can expire. If the water supply stops, for example because it stops raining, the float lowers 29 with the water level until it reaches the outlet 14 closed again gastight. The floor 18 ' of the collecting body 5 ' is concave, so that the float 29 can dip into the cavity thus formed. The advantage of this embodiment is that even large volume flows quickly out of the main body 2 can flow into the manhole. The higher the water level in the body 2 , the more the float swims 29 on so that the outlet too 14 more is released and in turn larger amounts of water can flow off.

1

trap

2

body

3

supporting member

4

filter means / Activated carbon filter

5

collecting body

6

connecting means

7

flange

8th

shoulder

9

manhole

10

grip

11

flange

12

openings

13

valve unit

14

outlet

15

ring tub

16

valve cover

17

connecting means

18

ground

19

shell section

21

bearing surface

22

shell section

23

shell section

24

breakthrough

25

annular chamber

26

tubular section

27

breakthrough

28

shoulder

29

float

Claims (20)

Odor trap for filtering exhaust gases rising from a manhole comprising a base body ( 2 ) with a circumferential wall that is directed downwards from a valve unit ( 13 ) and a number of breakthroughs ( 24 ), one in the base body ( 2 ) used collecting body ( 5 ), the openings ( 12 ) for the passage of water to the valve unit ( 13 ) and filter media ( 4 ) for absorbing gas odors which are arranged in such a way that they block the openings ( 24 ) cover. Odor trap according to claim 1, characterized in that the filter means ( 4 ) include an activated carbon filter. Odor trap according to claims 1 or 2, characterized in that the filter means ( 4 ) are designed in the form of an all-round mat. Odor trap according to one of claims 1 to 3, characterized in that the filter means ( 4 ) between the wall of the base body ( 2 ) and one with the base body ( 2 ) connected support element ( 3 ) are held, the support element ( 3 ) in the overlap area with the filter media ( 4 ) Breakthroughs ( 27 ) for the passage of exhaust gases from the manhole. Odor trap according to claim 4, characterized in that between the support element ( 3 ) and the base body ( 2 ) a circumferential ring chamber ( 25 ) is formed in which the filter means ( 4 ) are arranged. Odor trap according to claim 5, characterized in that the annular chamber ( 25 ) by a radially outwardly displaced jacket section ( 23 ) in the basic body ( 2 ) is formed in which the filter means ( 4 ) are completely included. Odor trap according to one of claims 4 to 6, characterized in that the supporting element ( 3 ) with the base body ( 2 ) is firmly connected and a flange section ( 7 ) for hanging in a manhole ( 9 ) having. Odor trap according to claim 7, characterized in that the supporting element ( 3 ) and the basic body ( 2 ) below the ring chamber ( 25 ) are connected. Odor trap according to claim 7 or 8, characterized in that the supporting element ( 3 ) following the flange section ( 7 ) a tubular section ( 26 ) which has the annular chamber ( 25 ) axially covered and its cross section to the cross section of the base body ( 2 ) is adjusted. Odor trap according to one of claims 1 to 9, characterized in that the openings ( 27 ) of the support element ( 3 ) and / or the breakthroughs ( 24 ) of the basic body ( 2 ) are designed in such a way that the entry of water to the filter media ( 4 ) is prevented. Odor trap according to one of claims 1 to 10, characterized in that the openings ( 27 ) of the support element ( 3 ) and / or the breakthroughs ( 24 ) of the basic body ( 2 ) above the openings ( 12 ) of the collecting body ( 5 ) are arranged. Odor trap according to one of claims 1 to 11, characterized in that the passage surface of the openings ( 27 ) of the support element ( 3 ) and / or breakthroughs ( 24 ) of the basic body ( 2 ) is larger than the cross-sectional area of the base body ( 2 ). Odor trap according to one of claims 1 to 12, characterized in that the collecting body ( 5 ) with a flange part ( 11 ) on the support element ( 3 ) or the basic body ( 2 ) rests. Odor trap according to one of claims 1 to 13, characterized in that the collecting body ( 5 ) is designed in such a way that between the filter media ( 4 ) and the collecting body ( 5 ) an annular space is formed. Odor trap according to one of claims 1 to 14, characterized in that the valve unit ( 13 ) is designed in the form of a siphon and a valve cover ( 16 ), which is in a circumferential ring trough ( 15 ) of the base body (). Odor trap according to claim 15, characterized in that the valve cover ( 16 ) using lanyards ( 17 ) with the collecting body ( 5 ) connected is. Odor trap according to one of claims 1 to 14, characterized in that the valve unit ( 13 ) a float ( 29 ) which includes the outlet ( 14 ) sealed gastight. Odor trap according to claim 17, characterized in that the floating body ( 29 ) is spherical. Odor trap according to one of claims 1 to 16, characterized in that the base body ( 2 ) and / or the support element ( 3 ) and / or the collecting body ( 5 ) made of plastic, especially polyethylene (PE), glass fiber plastic (GRP), polypropylene (PP) or polyphenylene sulfide (PPS). Odor trap according to one of claims 4 to 17, characterized in that several base bodies ( 2 ) including filter media ( 4 ) with a single support element ( 3 ) for use in a manhole ( 9 ) are connectable.