FI80931C - KOMBINATION AV STANKLAOS OCH VENTILATIONSVENTIL FOER AVLOPP. - Google Patents

Description

The invention relates to a principle solution with which the odor trap in the sewer system and at the same time the necessary ventilation of the sewer system can be implemented. The invention relates in particular to a combined odor trap and air conditioning valve, in particular for sewer systems.

As is well known, the sewer odor trap consists in practice of a more or less S-shaped pipe bend which retains so much liquid that the gas phase in the sewer cannot escape freely to disturb its environment with its odor, but a small liquid column / block of suitable height prevents free flow of gas. As is already known, such a liquid pocket also tends to store in itself heavier-than-liquid components, rocks, sand, small objects, etc. The end result is complete clogging of the odor trap. Due to this, the odor trap has to be opened relatively often. Equipping the odor trap with the possibility of opening and its general functional structure make the odor trap difficult and expensive to manufacture. In addition, the hygiene of such a previously known odor trap is also conceivable. Due to the above, for example, corrosion protection of an odor trap is difficult to implement because cleaning and handling of the inner surfaces is difficult.

One previously known solution for air conditioning a sewer system is presented in FI patent publication 55 239. However, the air conditioning of a sewer system according to this previously known solution is not suitable for placement in floor wells of rooms where liquid handling is rare or where the intervals of liquid flows, irrigation may be long. Examples of the above-mentioned spaces are garage floors or non-residential apartments. In such spaces, the odor traps dry out, resulting in a very nasty odor. Each of them has been able to state this in their practical experience. In addition, the air conditioning opening of the sewer, which in particular in the older sewer solutions is pulled through the external roof, is such that, especially in cold countries in winter, e.g. in Finland, winter conditions can freeze. a blockage in the end of the vent pipe, which results in a vacuum suction caused by the flow of liquid when the drainage system is used, which absorbs the odor trap, as a result of which the gases enter the room through the dry-absorbed odor trap. These types of problems are common, especially in older sewer systems. Another problem with the operation of the solution according to the above-mentioned FI patent is the aging of the sealing rubber and the resulting warping, which prevents complete sealing at the mouth of the sewer pipe and vapors caused by moisture and sewer disturbance, causing said gas leaks and emissions to rooms.

The object of the invention is to provide an odor trap which is simple to cast, manufacture and clean. It is a further object of the invention to provide an odor trap that is simple to protect from its inner surfaces. It is a further object of the invention to provide an odor trap which is more advantageous to manufacture than previously known solutions.

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It is also an object of the invention to provide a drainage system which, in contrast to the previously known FI patent publication 55 239, is suitable for placement in floor wells of rooms in which liquid handling is infrequent or the intervals of liquid flows, irrigation, may be long.

It is a further object of the invention to provide a solution for a sewer ventilation system in which the disadvantages caused by gas leaks and other emissions are prevented.

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In order to achieve the above and later objects, the combined drain odor trap and air conditioning valve according to the invention is mainly characterized in that the combined odor trap and air conditioning valve comprise a ring circumference, .

In addition, other advantageous features of the invention are set out in claims 2-10.

The combined drain odor trap and air conditioning valve 5 according to the invention is simple and inexpensive to manufacture.

In addition, the odor trap according to the invention is also suitable for use in spaces where liquid treatments are infrequent and / or the intervals between liquid flows are long.

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In addition, the combined odor trap and air conditioning valve according to the invention prevents the disadvantages caused by gas leaks and emissions due to the better attachment, centering and running load of the flexible material. According to the invention, the flow of gas and / or liquids into the sewer pipe is only possible when the acting force is downwards, i.e. towards the sewer network, i.e. if there is a vacuum in the sewer or there is liquid on the barrier membrane which presses the barrier membrane downwards. In this case, liquid or gas can flow into the sewer as required. Instead, no flow is allowed in the opposite direction, i.e. out of the drain, because the spring force of the spring-20 membrane keeps the flow opening closed.

The invention will now be described in more detail with reference to the figures of the accompanying drawing, in which Figure 1 shows a schematic cross-section of a combined odor trap and air conditioning valve according to the invention. as an embodiment applied to sewer vacuum control.

° Figure 1 shows an application example of a combined odor trap and air conditioning valve according to the invention suitable for drainage solutions. According to Figure 1, the outer circumference 1 of the floor drain is cast into a concrete floor 0 so that the upper end is in principle at floor level and the lower end extends through the floor, e.g. for further extension on the sewer line. A ring ring 3 is placed on the outer ring 1 so that the upper surface of the ring ring 3 is at floor level. The annular ring 3 has a small downwardly extending pipe 3a 3a, the length of which is denoted h. In this case, the lower end of the extended pipe 3a is a distance h lower than the lower edge of the annular ring 3 lying or supported on the upper edge of the outer circumference 1 or in the groove Thus, the closing member 2 of the pipe extension 3a of the annular ring 3 is lower by the height difference h than the outer edge 2b of the closing member 2. The height difference h causes a tension in the flexible connecting sides 2a of the closing member 2, which tends to pull the closing member 2 all the time against the mouth of the pipe joint 3a of the annular ring 3, thus hermetically closing the drain from the outside air. In this case, the flows a and b to the sewer can only flow in one direction.

A perforated plate 4 is supported on the upper edge of the annular ring 3, the upper surface of which is also at floor level. Thus, liquid spilled on the floor, e.g. water, can flow through the perforated plate 4 onto the closure member 2, which in this situation is in position I. The pressure in the liquid column 3a of height h is just able to open the closure member 2, the closing closure force acting on the resilient joints 2a by the closing force and the length h of the pipe extension 3a. In this case, no liquid remains on the floor because it can drain into the sewer.

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On the other hand, when the liquid flows flow there, suction and vacuum are created in the sewer, which must be replaced so that the vacuum pulls the closing member 2 to position II. In this case, air can flow between the closing member 2 and the pipe extension 3a into the sewer.

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The combined odor trap and air conditioning valve according to the invention are made of very simple parts. When manufactured as castings, there is no need for cores (casting cores), which are expensive and slow down the molding process when manufacturing molds. In addition, the structure of the closure member 2,2a, 2b 35 is simple and remains well in place when the outer circumference 2b of the closure member 2 is hermetically sealed.

The ring ring 3 can be locked in a suitable manner in a manner known per se to the outer ring 1. The connecting spools 2a of the closure member 2 are e.g. as shown in Fig. 2 or straight depending on the material of manufacture of the closure member 2 and the thickness of the closure member 2.

It is clear that the closure member 2 can be made of any suitable flexible material.

The embodiment of the invention shown in Figure 1 is simplified and is shown without any flange and / or other similar connections, which may be necessary per se, but which do not affect the principle of the invention in any way. The outer circumference 1 of the odor trap can also be made to shrink, to connect different sewer sizes or to be flanged, or to be provided with concrete fixings or similar practical support methods, but the effect of these details on the content of the invention and the operation of the solution is not substantially.

In practice, by means of the liquid column h, the same pressure of 100-150 Pa is applied to the closing member 2, at which pressure the closing member 2 opens. The perforated plate 4 can be lifted out of the opening of the annular ring 3 as required, whereby the closing member 2 can be freely inspected and cleaned if necessary.

Figure 3 shows an application of the shut-off valve-25 of the shut-off element 2 according to the invention, which is applied to the control of the vacuum of a sewer. The shut-off member 2, the shut-off valve, has a corresponding pipe 1, a ring circumference 3 and a pipe extension 3a, the length of which and the interaction of the connecting halves 2a select the necessary undercut area for air conditioning of the sewer. The protective cap 5 is installed, if necessary, to protect the suction opening which closes the closure-00 member 2, e.g. a rubber-elastic closure rubber. The fastening edge 2b is fitted at the mouth of the pipe 1.

The invention has been described above with reference only to some preferred embodiments thereof. However, it is in no way intended to limit the invention to these examples only, but many modifications and variations are possible within the scope of the inventive idea defined by the following claims.

Claims (10)

6,80931 ^ Claims Combined odor trap and air conditioning valve, in particular for sewer systems, characterized in that the combined odor-5 lock and air conditioning valve comprises a ring ring (3), a pipe extension (3a) arranged downwards from the ring ring (3) and a closing member (2) supported at its outer edge (2b) and the connecting coils (2a) of the closing member (2) are preferably in an oblique position with respect to the radius. Combined odor trap and air conditioning valve according to claim 1, characterized in that the closing member (2) is adapted to move downwards (II) from its closing position (I) when flows (a, b) towards the drain and the closing member (2) is closed in its closing position by elastic force (I) in the absence of flows (a, b) and / or in the presence of overpressure 15 in the sewer. Combined odor trap and air conditioning valve according to claim 1 or 2, characterized in that the combined odor trap and air conditioning valve are adapted to allow liquid flows into the drain system and to allow replacement air to enter the drain when the drain is under pressure. Combined odor trap and air conditioning valve according to one of Claims 1 to 3, characterized in that the closing element (2) closing the pipe extension (3a) arranged in the annular ring (3) of the combined odor lock and air conditioning valve is lower than the height difference (h) of the pipe extension (3a). the outer edge (2b) of the closing member (2), wherein the height of the liquid column of the height difference (h) causes a pressure in the closing member (2), at which pressure the closing member (2) is adapted to open. 30 Combined odor trap and air conditioning valve according to Claim 4, characterized in that the pressure exerted on the closing element (2) of the liquid column is 50 to 100 Pa, preferably 100 to 150 Pa. Combined odor trap and air conditioning valve according to one of Claims 1 to 5, characterized in that the height difference (h) is adapted to cause a tension of 780931 in the connecting halves (2a) of the closing element (2), which tension tends to pull the closing element (2) (3) against the mouth of the pipe extension (3a) so that the drain is hermetically sealed from the outside air. Combined odor trap and air conditioning valve according to one of Claims 1 to 6, characterized in that a perforated plate (4) is supported on the upper edge of the annular ring (3), through which the liquid spilled on the floor is arranged to flow over the shut-off element (2). the suction forces and the vacuum caused by the drain are adapted to open the closing member (2). Combined odor trap and air conditioning valve according to one of Claims 1 to 7, characterized in that the combined odor trap and air conditioning valve can be adapted to control the vacuum 15 of the sewer. Combined odor trap and air conditioning valve according to Claim 8, characterized in that the required vacuum range can be provided by the interaction (h) of the pipe (1), the annular ring (3) and the pipe extension (3a) and the connecting sides 20 (2a). sewer Air conditioning. Combined odor trap and air conditioning valve according to Claim 8 or 9, characterized in that a protective cap (5) can be fitted to protect the suction opening 25 of the closing element (2). 30 35 8 80931