DE102009038959A1 - Covering mechanism for sewer manhole in cellar rooms of buildings, has float valve arranged at lower side of plate, valve closing body fixed with valve seat in valve housing, and drainage hole opened in valve housing - Google Patents

Abstract

The mechanism has a float valve arranged at a lower side of a drainage plate, and a valve closing body e.g. ball, fixed with a valve seat in a valve housing (8) e.g. pipe socket. A drainage hole is opened in the valve housing. The drainage plate is formed for fixing in a floor (1) of a room outside a sewer manhole. The valve closing body is formed by a float of the float valve. The drainage plate is formed for fixing in a housing (2) of the sewer manhole. The valve seat exhibits a distance in a flow direction.

Description

The The invention relates to a sewer manhole or a safety device at a sewage pit against a backflow of sewage in a building.

In Basements of buildings are common Sewer shafts, through the existing in a room water is drained to the sewer. These sewage shafts usually have a flush with the floor arranged grid to prevent larger Get items into the sewer manhole and around one Tread surface to form. Such small sewage shafts There may also be low-level cellar entrances.

at very strong rain events, the problem may occur that in the sewer networks due to overloading of the cross sections Backwater occurs, leading to a backflow can lead from wastewater. To prevent that from happening Backwater and thus also dirt in cellars there are backflow stops. These are usually installed in the sewage piping. This makes it necessary in the basement the floor, which usually is concreted, open and such backflow stops into the sewers. This means a high technical and financial expenses.

In a known backflow stop of this type ( DE 10 2005 009 777 ) Although it is possible access to the valves arranged therein from the top through a shaft. The backflow stop itself must, however, be inserted into the pipeline.

at The known backflow closures are flapper valves present at a flow in the reverse direction getting closed. With a slow increase in water is their function not always guaranteed. In addition, own they in the direction of the correct sewage flow one Flow resistance.

Of the Invention is based on the object, one with low technical and economic effort to be realized possibility to create basements or other rooms with a sewage shaft against back-streaming To protect sewage.

to Solution to this problem, the invention proposes a Covering device for a sewer manhole, the one Having drain plate with at least one drain opening, where at the bottom of this drain plate a float valve is arranged, which has a valve housing, in the the drain opening or the plurality of drain openings the drain plate open.

These Covering device can in, or, at the sewer manhole even be attached, so the bottom of the basement room is not must be opened, as proposed by the invention Measure can be made at the sewer manure itself.

By the use of a float valve is ensured that the valve even with a slow rise in the water level responds. In addition, the enlargement of the Flow resistance negligible.

In Development of the invention can be provided that the drain plate, which corresponds to the grid mentioned above, on the floor of the room, immediately outside the existing recess for the sewer manhole. To For this purpose, for example, the drain plate in its edge region Have holes through which screws are inserted can. Preferably, the holes are countersunk, so that the screws do not over the surface of the Overflow the drain plate.

According to the invention also be provided that the cover plate on the housing of the Sewer shaft can be attached. Especially if used in the construction of a house equal to such a covering is to be a direct attachment of the cover plate with the Float valve on the housing of the sewage shaft makes sense be.

According to the invention However, it is also possible that the covering with the cover plate is retrofitted by the existing drain grille removed and against the drain plate with the float valve is replaced.

In Further development of the invention can be provided that the drain plate of the cover with a housing is made for a sewer manhole as a structural unit. This is suitable both for the first time installation as well when retrofitting, if you have the existing housing removed altogether.

It has already been mentioned that the measures according to the invention use a float valve, which is normally open and is closed when the water level rises. In a further development of the invention can now be provided that the float simultaneously forms the valve closing body. In particular, the invention proposes that the float is held in the valve housing in the manner of a valve cage, so that it is freely movable there. The float valve thus contains no Klap where there is a joint that may become stiff over time. The float is a simple commercially available, if necessary, easily exchangeable element, for example a float ball.

The Valve housing, the valve seat and the valve closing body can be formed in particular as a pipe socket, in particular then, when the float has spherical shape.

ever according to the size of the sewer manhole or The drain plate can according to the invention in development also be provided that at the bottom of the drainage plate more is arranged as a float valve.

According to the invention be provided that the valve seat within the valve housing from the drain holes of the drain plate has a distance.

Further Features, details and advantages of the invention result arising from the claims and abstract, whose both texts by reference to the content of the description The following description of preferred embodiments will be given the invention and with reference to the drawing. Hereby show:

1 schematically a section through a sewer manhole with a covering device according to the invention;

2 on an enlarged scale a section through the float valve on the underside of the cover plate;

3 a plan view of the cover plate of the arrangement of 1 ,

The 1 shows below the floor 1 a basement room the housing 2 a sewage shaft. On the housing of the sewer manhole is a side nozzle 3 arranged, which leads into the actual sewer pipe within the floor. In the case 2 the wastewater shaft can also be arranged a dirt basket, which is cleaned regularly. This is not shown for reasons of simplicity. The usually existing grid plate is in this case 2 already removed.

On the upper edge 4 of the housing 2 now becomes a sealing ring 5 applied, which ensures that the water can enter the sewer manhole only through openings in the cover plate, and of course vice versa.

Now from the top is the cover plate 6 on the case 2 hung up. The edge 7 the cover plate 6 lies in each case outside the outer circumference of the housing 2 of the sewage shaft. At the bottom of the cover plate 6 is in the middle of the housing 8th arranged a float valve. The housing 8th has the shape of a cylindrical pipe socket. In the wall of this pipe socket are openings 9 educated. In the area of the underside of the pipe socket is a ring plate 10 to see that in the valve body 8th arranged float valve closes.

To accommodate the edge of the cover plate, the floor 1 outside the top edge 4 of the housing 2 be deepened, as in the 1 is indicated. The cover plate 6 lies under the interposition of the seal 5 on the upper edge 4 of the housing 2 on and then on the floor 1 fastened with screws and dowels. The attachment happens in such a way that the sealing ring 5 the plate 6 opposite the housing 4 seals.

The 2 shows on a larger scale a section through the central region of the cover plate 6 and the valve housing disposed on its underside 8th , In the cover plate 6 are a series of outlet openings 11 formed, for example round holes, thereby forming a kind of grid that holds back larger items. In the case 8th is a valve seat 12 formed, which corresponds to a section of a spherical surface. In the valve seat 12 is a sealing ring 13 installed, which ensures tightness. The valve seat 12 has a distance from the cover plate 6 ,

Below the valve seat 12 is in the pipe socket 8th a swimmer 14 arranged, in the example shown a float ball. In the 1 shown partial ring plate 10 , in the 2 for the sake of simplicity is not shown, ensures that the ball 14 in the valve housing 8th is held. The swimmer 14 is therefore only supported in the valve housing, he can move freely. Normally it lies in its lower position, that through the ring plate 10 is defined. If the water through the openings 11 and the valve seat 12 flows down, while the float ball is overflowed. The water can be from the side openings 9 the valve housing 8th leave.

If, due to a backwater in the sewer, the water level in the housing of the sewer manhole increases, the float becomes 14 raised until it touches the valve seat 12 is applied. This closes the float valve. There is no wastewater flowing into the basement.

The trained as a ball float 14 at the same time forms the valve closing body. There are no valvular joints or similar mechanical devices that could wear or foul over time. Even in Rückstaufall the float 14 hardly pollute as there is no flow of sewage once the valve is closed.

The 3 shows a plan view of the cover plate 6 , At the edges are the mentioned mounting holes 15 formed, through which the cover plate 6 on the floor 1 can be screwed. In the middle are the individual drainage openings 11 arranged inside the valve body 8th open out.

It a covering device for a sewer manhole is proposed, which are both retroactive to an existing one already built-in sewer manhole can be installed as well a housing of a not yet built sewage shaft. The cover device includes a cover plate for the Exchange with the previous grid plates is used. On the bottom this cover plate is arranged a valve housing of a float valve, with increasing water level in the sewer manhole the valve closes. In the cover plate openings are formed, which open in the valve housing above the valve seat. By attaching such a float valve, it is possible Sewer shafts against backflow with little effort to secure.

The Cover device has the further advantage that the check valve sits directly under the cover plate and attached to this. When unscrewing the cover plate is therefore taken out of the check valve with. It can be cleaned quickly and easily in this way. The housing of the check valve, for example screwed to the cover plate or otherwise to her be attached.

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 102005009777 [0004]

Claims (10)

Covering device for a sewage shaft, With 1.1 a flow plate, the 1.2 at least one drain opening having, 1.3 one arranged on the underside of the drain plate Float valve, that 1.4 in a valve housing a Valve seat and a valve seat cooperating with the valve seat having, 1.5 the drain holes) in the valve body opens / open. Covering device according to claim 1, wherein the drainage plate for attachment to the floor of the room outside the sewage shaft is formed. Covering device according to claim 1 or 2, wherein the drain plate for attachment to the housing of the sewer manhole is trained. Covering device according to 1 or 2, for replacement with a drain grate of an existing sewage shaft. Covering device according to one of the preceding claims, as a unit with a housing of a sewage shaft educated. Covering device according to one of the preceding claims, in which the valve closing body of the float the float valve is formed. Covering device according to one of the preceding claims, in which the valve closing body in the form of a Ball has. Covering device according to one of the preceding claims, in which the valve housing is designed as a pipe socket. Covering device according to one of the preceding claims, with several arranged on the bottom of the drain plate float valves. Covering device according to one of the preceding Claims in which the valve seat from the drain openings has a distance in the flow direction.

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