DE20302159U1 - Component for fire protection of a drain device and drain device with such a component - Google Patents

Description

■f*

Dipl.-Chem. E.L. FRITZ Dr. Dipl.-Phys. R. BASFELD Dipl.-Ing. J. GRAEFE Patent attorneys

M. HOFFMANN

B. HEIN Lawyers

Ostentor 9 59757 Arnsberg

GM02/092
10.02.2003/BA/RH

Dallmer GmbH & Co. KG Wiebelsheidestrasse 25

59757 Arnsberg

'Component for the fire protection of a drainage device and drainage device with such a component"

-1-

The present invention relates to a component for the fire protection of a drainage device according to the preamble of claim 1 and to a drainage device with such a component according to the preamble of claim 13.
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Drainage devices for installation in a floor or ceiling opening are used in a wide variety of areas, usually serving as a drain for waste water, which then flows into a connected sewage pipe. Since a floor or ceiling opening is created in the area of the drainage device, there is a risk that a fire in an area of the building below will pass through the floor or ceiling opening into a section of the building above the ceiling or floor (fire compartment). Even fire sealing using metal plates or similar, as was sometimes used in the past, does not offer sufficient fire protection here, since metal is a good conductor of heat and thus the heat from the area where the fire is located spreads in an undesirable way via the metal into the area above the floor or ceiling opening. This can only be effectively prevented by using suitable fire protection materials, such as so-called intumescent foams, which expand in volume when an increased temperature occurs and are therefore able to seal a floor or ceiling opening so fireproof that neither fire nor smoke can penetrate into the area above.

DE 201 01 589 U1 describes a drainage device of the type mentioned above, in which a ring-shaped first fire protection insert made of a material that expands at elevated temperatures is placed around a drain pipe connected to the underside of the drain element designed as a drain pot. The drain pipe has

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A pot-shaped flange is placed on the top, around which a second fire protection insert is placed.

However, this previously known drainage device consists of a relatively large number of individual parts and is quite complicated to assemble. First, retaining brackets are attached to a metal pot using screws. The drain pipe is pushed into the metal pot and attached to the drain pot by turning, for example using a type of bayonet lock. The drain pot with the drain pipe is then inserted into the ceiling opening and secured using the retaining brackets. A fire protection sleeve, which contains the fire protection material on the inside, is then pushed onto the drain pipe from the underside of the ceiling. A formwork sheet with a central opening is then pushed onto the drain pipe and screwed to the underside of the ceiling. The remaining opening around the metal pot is filled with a mortar compound. The plastic drain pot is then inserted into the metal pot from the top of the ceiling. The complex assembly work on the building site when installing this drainage device is very costly.

The object of the present invention is to create a component intended for fire protection of a drainage device and a drainage device of the type mentioned above provided with such a component, which are of simpler construction and enable significantly simpler assembly. A further object is to create a component of the type mentioned above that is less sensitive.

The solution to these objects is provided by a component according to claim 1 or 13 and a drainage device according to claim 14.

According to claim 1, it is provided that the component comprises a pipe section suitable for connection to further parts of the drainage device, which is connected to the receiving means to form a component by embedding the end in the fire protection compound at least partially coating the receiving means.

As a result, the solution according to the invention results in a single component which already includes the receiving means, if necessary with fastening devices for attachment in the ceiling opening, the fire protection compound in the desired areas and a piece of pipe into which the drain pot, which is usually made of plastic, only has to be inserted. According to the invention, a part is therefore available which is prefabricated by the manufacturer, so that the effort involved in the subsequent on-site assembly can be significantly reduced by saving several assembly steps and possible assembly errors can be largely prevented. The component comprising the receiving means, the fire protection compound and the piece of pipe is mounted in the ceiling or floor opening in a first step and can be cast into the opening. Additional formwork is not required.

The drain pot, which is usually made of plastic, is then simply inserted into the pipe section of the component. The drain pipe can be pushed from the bottom onto a pipe socket attached to the bottom of the drain pot, for example, and the assembly process is then complete.

In particular, a component according to the invention consists of fewer parts than is known from the prior art. Furthermore, the component can be assembled without tools and other aids.

Advantageously, the pipe section can be designed as a sleeve.

-A-

According to a preferred embodiment of the present invention, the receiving means is made of metal. In this case, it can be provided that the pipe section axially extends the receiving means.
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The receiving means preferably has a plate that projects radially outwards. This plate can then take on the function of a formwork in the ceiling or floor opening and catch mortar mass that is filled in from above and prevent it from escaping downwards. Mortaring the floor or ceiling opening is only necessary in the area of the pipe section, but not below the plate. Furthermore, additional formwork means are unnecessary with the construction element according to the invention.

The fire protection compound is already on or in the building element and simultaneously forms the link between the holding device and the pipe section. It is therefore not necessary for the person working on the construction site to insert a fire protection insert into the holding device. There is also no need to use a fire protection insert in the area of the drain pipe or to slide a fire protection sleeve onto the drain pipe.

The fire protection compound, which according to the invention is an integral part of the component, is preferably provided as a coating on the plate on at least one side, whereby this simultaneously has the advantage that when producing the drainage device, the pipe section can, for example, simply be placed on the coating with the fire protection compound, which is still soft, so that after the fire protection compound has hardened, the pipe section is permanently connected to the receiving means in one piece.

The receiving means preferably has an axial nozzle which is connected to the radially outwardly projecting plate, wherein this axial nozzle is preferably also coated with fire protection compound at least on the inside. The plate preferably projects radially outwards beyond the embedded pipe section and in this outwardly projecting area the plate is also coated with fire protection compound on at least one side, preferably on the top. The axial nozzle can extend downwards from the plate.

The fire protection compound can be a material consisting of several components. The fire protection compound can be pourable during the manufacture of the building element, which makes production particularly simple, since the fire protection compound can be introduced into the receiving medium in the areas mentioned, whereby after cooling the fire protection compound is present as a suitably shaped solid plastic-like material which is part of the building element. This fire protection compound, which is dimensionally stable in the application state and is preferably also located in the area of the axial nozzle of the receiving medium on the inside, swells at elevated temperatures in the event of a fire and closes the passage of the axial nozzle, whereby the fire protection compound swells radially inwards. The ceiling opening is then closed, whereby the swollen fire protection compound forms a temperature barrier. Tests show that even at temperatures of approx. 1000° on the underside of the ceiling opening, the temperature on the top is room temperature or only slightly higher, so that the spread of the fire source and the transfer of fire and smoke to other fire compartments is prevented.

The drainage element, which is preferably designed as a drainage pot and is usually made of plastic, is simply inserted into the component from above in such a way that the

The pipe section of the component, preferably designed as a sleeve, preferably receives a cylindrical part of the drain pot in a form-fitting manner. The pipe section of the component according to the invention can thus serve as a guide for the drain pot. An additional fire protection insert between the plastic drain pot and the component prefabricated by the manufacturer is not necessary. The fire protection compound located below the drain pot after assembly closes the remaining ceiling opening intended for the waste water. A plastic pipe socket that may be molded onto the plastic drain pot would melt away due to the high temperatures, but this is irrelevant because the foaming fire protection compound completely closes the passage anyway. The fire protection compound is located on the inside of the socket, which concentrically surrounds the plastic pipe socket of the drain pot after assembly. Since the plate located above the socket projects further radially outwards and there is preferably fire protection compound in this area too, this fire protection compound also closes the radially outer part of the opening when it foams. The metal from which the holding device is preferably made forms an external abutment for the fire protection compound both in the area of the nozzle and in the area of the plate, so that the expansion pressure of the foaming material is directed radially inwards. If the pipe section that axially extends the holding device partially melts away due to the heat generated, this is irrelevant. The function of the pipe section is primarily to guide the plastic drain pot during assembly and to hold it in a centered position.

If flat irons are used to attach the drain device in the ceiling or floor opening, these can be attached to the plate of the receiving device by the manufacturer.

so that a further assembly step on site, namely the fastening of such flat irons, is not necessary. Such flat irons can, for example, be welded or screwed onto the support means.
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In order to seal between the pipe section of the building element and the plastic drain pot, the pipe section can preferably be designed with a groove that accommodates a suitable sealing ring. Since the plastic drain pot is simply inserted into the pipe section, it can be moved axially within the pipe section and thus brought into a height position that is adjusted to the level on the top of the floor or ceiling opening and, if necessary, fixed in this height position using suitable means. The sealing ring can serve as sound insulation and odor trap at the same time. Additional sound insulation is provided by the fire protection compound in the plate.

A preferred development of the solution according to the invention provides that the drain pot has at least two molded-on pipe sockets on the underside, which are concentric with one another. This makes it possible to connect a drain pipe with a smaller diameter or a larger diameter when connecting the drain line, which can then be pushed onto the appropriately dimensioned pipe socket. This allows drain pots of this type to be used in a more versatile way by molding two or more pipe sockets adapted to the diameters of common sewage pipes onto the drain pot. An additional possibility is to push a drain pipe onto the outside of the axial socket of the receiving means. With two pipe sockets molded onto the drain pot, you then already have connection options for drain pipes with three different diameters.

A possible preferred variant of the invention provides that a seal, preferably a lip seal, can be placed on the upper edge of the pipe section, whereby this seal seals against the outer wall of a drain pot, which is not inserted into the pipe section in a fitting manner, but rather has a slightly radial

This radial distance is then bridged by the seal, which simultaneously provides a clamp connection between the drain pot and the pipe section and serves as an odor trap and silencer.
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Claim 13 provides that the fire protection compound is provided with a protective layer at least in sections. In particular, the areas of the fire protection compound that may come into contact with waste water can be covered with the protective layer.

This protective layer can be made of plastic, for example silicone, polyethylene or polypropylene. The protective layer can be relatively thin and only has to prevent the fire protection compound from coming into contact with waste water, because depending on the type of fire protection compound used, the waste water could damage or dissolve it.

In the event of a fire, the protective layer melts or burns immediately, so that the fire protection function of the fire protection compound is not impaired by the protective layer.

In addition to the previously described component for the fire protection of a drainage device, the subject of the present invention is the drainage device itself, which in addition to the component comprises a drainage element made of a deformable material, wherein in the assembled state the receiving means and/or the pipe section of the component at least partially concentrically surround the drainage element.

Advantageously, it can be provided that the drainage element is designed as a drainage pot or drainage pipe and preferably consists of plastic.

According to a further development of the invention, such a drainage device comprises, in addition to the aforementioned component and a drainage element, at least one drainage pipe which can be connected to at least one pipe socket formed on the underside of the drainage element to form a fluidic unit.

According to an alternative solution, the drain pipe can be pushed onto or pushed into one of the pipe sockets of the drain pot or, if necessary, into a socket of the drain pot. According to another variant, a drain pipe can also be pushed onto the axial socket of the receiving means of the component.

The subject matter of the invention is therefore both the component on its own and a drainage device with at least one such component and a drainage element as well as a drainage device with at least one such component, a drainage pot and at least one drainage pipe.

According to the invention, it can be provided that the drainage device comprises an annular filling aid part. According to one embodiment of the present invention, the filling aid part can be pushed over the nozzle into a position below the plate, wherein the filling aid part preferably projects slightly beyond the plate radially outwards. According to an alternative embodiment of the present invention, the filling aid part is arranged between the plate and the pipe section and is connected to them together by the fire protection compound, wherein the filling aid part also preferably projects slightly beyond the plate radially outwards. Such filling aid parts can optionally have a

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Bridge the existing circumferential gap between the plate and the ceiling and floor openings, so that a better seal against the leakage of casting compound downwards is achieved.

Preferably, the filling aid part is made of a flexible material.

In particular, the filling aid part can be provided with holes and/or slots. The flexibility and the slots can enable better insertion of the filling aid part into a ceiling or floor opening. In the second embodiment, the holes can ensure better connection of the filling aid part to the plate or to the pipe section through the fire protection compound.

According to the invention, it is possible for the drainage device to comprise a soundproofing sleeve, which can be arranged between an upper, radially outwardly extending flange-like region of the drainage pot and the floor or ceiling. This soundproofing sleeve, which can be made of Styrofoam, for example, can further improve the sound insulation of the drainage device according to the invention.

The features mentioned in the subclaims relate to preferred developments of the solution to the problem according to the invention. Further advantages of the invention emerge from the detailed description below.
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The invention is described in more detail below using exemplary embodiments with reference to the accompanying drawings.

Fig. 1a shows a drainage device according to a first variant of the

Invention in longitudinal section;

Fig. 1b is a detailed view according to Ib in Fig. 1a;

Fig. 2 a drainage device according to Fig. 1 with inserted

Drain pot in installed state in a ceiling opening in sectional view;

Fig. 2a shows a drainage device according to a slightly modified variant with a slightly smaller

dimensioned drain pot in sectional view;

Fig. 3 a drainage device according to a slightly modified

Variant as floor drain e.g. for shower drains; 25

Fig. 4 is a sectional view of an inventive

Drainage device according to a slightly modified variant as a floor drain for e.g. a parking deck;

Fig. 5a is a view corresponding to Fig. 1a with a

differently designed filling aid part;

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5b a detailed view according to Vb in Fig. 5a;

Fig. 6a is a plan view of a filling aid part which is used in the

Drainage device according to Fig. 5a is installed; 5

Fig. 6b is a view according to the arrow VIb in Fig. 6a.

First, reference is made to Fig. 1a. The illustration shows the component 10 of a drainage device according to the invention, prefabricated by the manufacturer, in longitudinal section, comprising a receiving means 12 made of metal, which is coated on the inside with a fire protection compound 13, and a pipe section designed as a sleeve 11 which axially extends the receiving means 12 and whose lower end is embedded in the fire protection compound coating the receiving means 12. The receiving means 12 consists of a basically cylindrical nozzle 12a and a plate 12b which projects radially outwards from this nozzle 12a at its upper end in the installed state and has an area 12c which projects outwards beyond the sleeve 11. As can be seen, the plate 12b is provided with the fire protection compound 13 on its upper side and the nozzle 12a is also coated on the inside with this fire protection compound 13. The sleeve 11, which is preferably made of plastic, basically stands with its lower front end on the plate 12b of the receiving means 12 and is held on the receiving means 12 by the set fire protection compound 13, which has a plastic-like consistency, so that the whole forms a one-piece part.

In order to fix the device in a floor or ceiling opening, fastening devices in the form of flat irons 16 are mounted in the outer area of the plate 12b of the receiving means 12, which extend from the plate 12b in a

obtuse angle radially outwards and upwards. There are several of these flat irons 16 distributed around the circumference, which can be welded to the plate 12b, for example. The flat irons 16 are bent approximately horizontally at their upper end, so that these upper ends can be placed and/or fastened on the upper side of a drainage level in the edge area around a ceiling opening in order to hold the drainage device, as shown in Fig. 2. The flat irons 16 serve as mortar anchors and at the same time as height fixing parts.

In order to obtain a ceiling opening or floor opening 9 as shown in Fig. 2, a core drilling is usually carried out. After the flat irons 16 have been placed in the edge area of the floor opening, the remaining annular gap between the sleeve 11 and the ceiling opening 9 can be closed with a casting compound 8. It can be seen in Fig. 2 that in this installation situation the fire protection compound 13 applied to the radial plate 12b of the receiving means 12 is located practically in the entire area of the annular gap between the pipe socket 21 of the drain pot 20 and the lower section of the ceiling opening 9, so that this area is completely foamed up in the event of a fire. At the same time, the plate 12b serves as a kind of formwork and catches the casting compound 8.

In Fig. 2 and Fig. 2a, a soundproofing sleeve 40 can be seen, which is arranged between an upper flange-like region of the drain pot 20 that extends radially outwards and the floor or ceiling. In this way, the flange-like region of the drain pot 20 does not lie directly on the concrete of the floor and ceiling, but only indirectly via the soundproofing sleeve 40, which in this way contributes to sound insulation. This soundproofing sleeve 40 can of course also be used with all other drainage devices according to the invention.

The soundproofing sleeve 40 can in particular consist of polystyrene.

It is possible to additionally use a collar-like, ring-shaped filling aid part 32, which in the embodiment according to Fig. 1a, Fig. 1b, Fig. 7a and Fig. 7b can be pushed onto the nozzle 12a and then lies under the plate 12b and projects slightly radially outwards beyond it, as can be seen in Fig. 1b. This filling aid part 32, also shown in Fig. 2, can consist of plastic, for example, and be made of a relatively thin material and, if necessary, can also be partially slotted so that it becomes more flexible. This filling aid part then bridges any circumferential gap that may still exist between the plate 12b of the receiving means 12 and the ceiling or floor opening 9 in order to achieve a better seal against the casting compound 8 escaping downwards. The filling aid part 32 does not necessarily have to be used, however.

An alternative filling aid part 32 can be seen in Fig. 5a and 5b, which is arranged above the plate 12b and below the sleeve 11. This filling aid part 32 can thus be cast into a component by the fire protection compound together with the receiving means 12 and the sleeve 11 during the manufacture of the component 10 according to the invention.

From Fig. 6a it can be seen that the filling aid parts 32 can have slots 33 in their radial outer region, which can facilitate insertion into narrower ceiling or floor openings 9. The slots 33 ensure that areas of the filling aid parts 32 arranged adjacent to the slots 33 can partially overlap one another.

It is also possible that the filling aid part 32 installed in the drainage device according to the invention in Fig. 5a or Fig. 5b can also have holes. Fire protection compound can pass through these holes during the manufacture of the component 10 according to the invention, so that a better connection of the filling aid part 32 with the receiving means 12 and the sleeve 11 can be realized.

In Fig. 2 it can also be seen that the drain pot 20 with its pot part can simply be inserted into the sleeve 11. The sleeve 11 has, as can also be seen from Fig. 1, a circumferential annular groove 14 which accommodates a sealing ring 15 which, as can be seen from Fig. 2, seals the circumference of the drain pot 20. In addition, several pipe sockets 21, 22 are concentrically formed on the underside of the drain pot 20 so that different pipes with different diameters of a drain line can be connected there. In the drawing according to Fig. 2, a drain pipe 23 with, for example, 50 mm diameter, a drain pipe 24 with, for example, 75 mm diameter and a third drain pipe 25 with, for example, 110 mm diameter are shown. The latter drain pipe 25 can be pushed onto the outside of the axial socket 12a of the receiving means 12. This is of course to be understood in such a way that these three connection options exist alternatively, so that usually only one drain pipe 23, 24 or 25 is connected. However, this has the advantage that the same drain device can be used in installation situations with different requirements.

A variant of the invention is described below with reference to Fig. 3. Here too, the drainage device comprises the component 10, which is basically constructed in the same way as in the previously described variant according to Fig. 1, with only the diameter

of the drain device corresponding to the floor opening 9 is somewhat smaller in the example according to Fig. 3. The drain device also differs in that in Fig. 3 the sleeve 11 is arranged somewhat further inwards and is almost flush with the axial nozzle 12a of the receiving means 12. The drain device is attached in the same way as described above. The plastic drain pot 20 is in turn inserted into the sleeve 11 of the previously mounted device. However, the drain pot 20 is designed somewhat differently in this variant, as it is a floor drain for a shower. A seal is again applied to the circumference of the drain pot 20. A drain pipe 23 is pushed onto the outside of an axial pipe nozzle 22 of the drain pot 20. In the event of a fire, the fire protection compound 13, which is located in the area of the axial nozzle 12a, swells radially inwards.

A further variant of the invention is explained in more detail below with reference to Fig. 4. In this case, it is a drainage device for a floor drain with fire protection for a parking deck, for example. The drainage device with the sleeve 11 and the receiving means 12 is in principle designed similarly to the illustration according to Fig. 1, whereby in the variant according to Fig. 4 only the diameter of the drainage device as a whole is somewhat larger in accordance with the diameter of the floor opening 9. The drain pot 30 for the parking deck drain is designed somewhat differently than in the previously described embodiments.

As can be seen from the drawing, in this case the pot part of the drain pot 30 is not inserted into the socket 11, but a small radial clearance remains. However, this annular gap is filled by a lip seal 31, which is placed on the upper edge of the socket 11 and seals against the outer wall of the drain pot 30 inserted concentrically into the socket 11. The drain pot 30 in turn has

a molded pipe socket 21 onto which a drain pipe of a waste water line 24 is pushed on the outside. Here too, the remaining opening above the plate 12b, i.e. the annular gap between the socket 11 and the bottom opening 9, is filled with a casting compound 8. Flat irons 16 or the like attached to the device can again be used to fasten the drain device in the bottom opening 9 before filling it with the casting compound.

It is also possible to cover the fire protection compound 13 with a protective layer in the areas that could come into contact with waste water. The protective layer can be very thin and made of plastic, for example silicone, polyethylene or polypropylene. The plastic layer can be cast in, for example.

Claims (27)

1. Component for the fire protection of a drainage device comprising: - a heat-resistant receiving medium ( 12 ) and - a fire protection compound ( 13 ) which foams at elevated temperatures in the area of the receiving means ( 12 ), characterized in that - the component comprises a pipe section suitable for connection to other parts of the drainage device, - which is connected to the receiving means ( 12 ) to form a component by embedding it at the end in the fire protection compound ( 13 ) which at least partially coats the receiving means ( 12 ). 2. Component according to claim 1, characterized in that the pipe piece is designed as a sleeve ( 11 ). 3. Component according to one of claims 1 or 2, characterized in that the receiving means ( 12 ) consists of metal. 4. Component according to one of claims 1 to 3, characterized in that the pipe piece axially extends the receiving means ( 12 ). 5. Component according to one of claims 1 to 4, characterized in that the receiving means ( 12 ) has a nozzle ( 12a ) and a plate ( 12b ) projecting radially outward from the nozzle at one end, wherein at least the plate ( 12b ) is coated on at least one side with the fire protection compound ( 13 ) and wherein the pipe section is embedded at the end in this fire protection compound ( 13 ). 6. Construction element according to claim 5, characterized in that the pipe piece stands on the plate ( 12b ) at its front side and is held on the receiving means ( 12 ) by the set fire protection compound ( 13 ). 7. Component according to one of claims 5 or 6, characterized in that the plate ( 12b ) of the receiving means ( 12 ) projects radially outwards beyond the pipe section and the plate ( 12b ) is also coated with fire protection compound ( 13 ) in this outwardly projecting region ( 12c ). 8. Component according to one of claims 5 to 7, characterized in that the axial nozzle ( 12a ) of the receiving means ( 12 ) is coated on the inside with fire protection compound. 9. Component according to one of claims 1 to 8, characterized in that fastening devices, preferably in the form of flat irons ( 16 ), are attached to the receiving means ( 12 ), preferably in the outer region of the plate ( 12b ), which preferably extend radially obliquely outwards and upwards from the plate ( 12b ) at an obtuse angle. 10. Component according to claim 9, characterized in that the flat irons ( 16 ) are welded or screwed to the plate ( 12b ). 11. Component according to one of claims 1 to 10, characterized in that the pipe piece has a groove ( 14 ) suitable for receiving a sealing ring ( 15 ). 12. Component according to one of claims 1 to 11, characterized in that the pipe piece consists of plastic. 13. Construction element according to one of claims 1 to 12 or according to the preamble of claim 1, characterized in that the fire protection compound ( 13 ) is provided at least in sections with a protective layer. 14. Drainage device for installation in a floor or ceiling opening comprising a structural element according to one of claims 1 to 13 and a drainage element made of a deformable material, characterized in that in the installed state the receiving means ( 12 ) and/or the pipe section at least partially concentrically surround the drainage element. 15. Drainage device according to claim 14, characterized in that the drainage element is axially displaceable within the pipe section and thus height-adjustable. 16. Drainage device according to one of claims 14 or 15, characterized in that the drainage element is designed as a drainage pot ( 20 , 30 ) or drainage pipe and preferably consists of plastic. 17. Drainage device according to one of claims 14 to 16, characterized in that it further comprises at least one drain pipe ( 23 , 24 , 25 ) which can be connected to at least one pipe socket ( 21 , 22 ) formed on the underside of the drain element to form a fluidic unit. 18. Drainage device according to one of claims 14 to 17, characterized in that the drainage element can be inserted into the upper region of the pipe section. 19. Drainage device according to one of claims 16 to 18, characterized in that the drain pot ( 20 ) has at least two pipe sockets ( 21 , 22 ) formed on the underside, which are concentric with one another and which are dimensioned such that optionally a first drain pipe ( 23 ) with a smaller diameter or a second drain pipe ( 24 ) with a larger diameter can be pushed onto the inner socket ( 22 ) or onto the outer socket ( 21 ). 20. Drainage device according to one of claims 14 to 19, characterized in that a drain pipe ( 25 ) is provided which can be pushed onto the outside of the axial nozzle ( 12a ) of the receiving means ( 12 ). 21. Drainage device according to one of claims 14 to 20, characterized in that a seal, preferably a lip seal ( 31 ) can be placed on the upper edge of the pipe section, suitable for sealing the outer wall of a drain pot ( 30 ) which can be inserted concentrically into the pipe section but with some distance. 22. Drainage device according to one of claims 14 to 21, characterized in that the drainage device comprises an annular filling aid part ( 32 ). 23. Drainage device according to claim 22, characterized in that the filling aid part ( 32 ) can be pushed over the nozzle ( 12a ) into a position below the plate ( 12b ), wherein the filling aid part ( 32 ) preferably projects slightly radially outwards beyond the plate ( 12b ). 24. Drainage device according to claim 22, characterized in that the filling aid part ( 32 ) is arranged between the plate ( 12b ) and the pipe section and is connected to them together by the fire protection compound ( 13 ), wherein the filling aid part ( 32 ) preferably projects slightly radially outwards beyond the plate ( 12b ). 25. Drainage device according to one of claims 22 to 24, characterized in that the filling aid part ( 32 ) consists of a flexible material. 26. Drainage device according to one of claims 22 to 25, characterized in that the filling aid part ( 32 ) is provided with holes and/or slots ( 33 ). 27. Drainage device according to one of claims 14 to 26, characterized in that the drainage device comprises a soundproofing sleeve ( 40 ) which can be arranged between an upper, radially outwardly extending flange-like region of the drain pot ( 20 ) and the floor or the ceiling.