RU213186U1 - storm water inlet - Google Patents

Abstract

The utility model relates to construction and can be used as a device for draining rain and melt water from exploited roofs and stylobates with heavy traffic. The storm water inlet contains a cast-iron ladder and a cast-iron funnel having a flange. The ladder consists of a body with an outlet pipe and an end grate placed on top. The outlet pipe of the ladder body is connected to the cast-iron funnel by a polymer shaft pipe. The end grid is bolted to the top of the body. The cast-iron ladder has a body wall thickness of 7-8 mm and an end grate thickness of 12-15 mm. The technical result is to increase the reliability of the storm water inlet.

Description

Application area

The claimed utility model relates to construction and can be used as a device for draining rain and melt water from exploited roofs and stylobates with heavy traffic load.

State of the art

From the prior art, the design of a storm water inlet is known (see https://www.sita-bauelemente.de/produkte/detail/SitaMulti_Freispiegelgully/400499/), containing a cast-iron ladder, consisting of a body with a drain hole and an end grate screwed to it and supported through a support ring and a height adjuster on the upper roof funnel installed in the roof pie and connected through a sealing element to the lower outlet funnel.

Also known is the design of the storm water inlet (https://www.aco.at/produkte/freiflaechenentwaesserung/dachentwaesserung?sword_list%5B0%5D=Entw%C3%A4sserung&cHash=16f139350b62425eaa3169def809b6e2), selected as the closest analogue, containing a ladder consisting of a body with a drain through the openings of the end grid and resting through the transitional frames on the upper roof funnel, installed in the roof pie, connected through the sealing element to the lower outlet funnel.

The technical problem inherent in the known solutions is their relatively low reliability, lack of versatility, and design complexity. The problem of low reliability lies in the support of the ladder through the intermediate elements on the upper roof funnel, which can lead to the loss of stability of the funnel and its destruction in case of significant loads on the ladder. The problem of insufficient versatility is due to the fact that the drain for effective drainage should be located above the upper roof funnel, providing direct drainage of water, and the displacement of the drain to the side will lead to a decrease in effective drainage. The complexity of the design is due to the presence of two consecutive funnels in the structure of the storm water inlets, the manufacture and positioning of each of which is a complex task that requires a certain level of knowledge and skills.

Utility Model Disclosure

The technical result achieved when creating the claimed utility model is to increase the reliability of the storm water inlet. Also, in comparison with the closest analogue, an increase in the versatility and simplification of the design of the storm water inlet is achieved.

The claimed technical result is achieved through the use of the following set of essential features, namely: a storm water inlet containing a cast-iron ladder, consisting of a body with an outlet pipe and an end grate placed on top, a cast-iron funnel having a flange, according to the utility model, the outlet pipe of the ladder body is connected to a cast-iron funnel polymer shaft pipe, the end grid is attached to the upper part of the housing by bolting, while the cast-iron ladder has a wall thickness of the housing of at least 7 mm, and a thickness of the end grid of at least 12 mm.

In particular cases of execution of the claimed device, the end grid can be attached to the upper part of the body with two bolts located diagonally. The cast-iron ladder can be made of SCh-20 cast iron. The cast iron ladder can be fixed with an unloading plate. The cast iron drain can provide load class B125. The end grille can be square with side lengths from 250 to 350 mm. The length of the polymer shaft pipe can be from 100 mm. The length of the polymer shaft pipe can be up to 1000 mm. The polymer shaft pipe can be made two-layer corrugated. Polymer shaft pipe can be made with multi-level perforation. The diameter of the outlet pipe of the ladder body can be at least 100 mm. The diameter of the outlet pipe of the ladder body can be no more than 150 mm.

Graphic materials explaining the essence of the utility model

Fig. 1 - general view of the storm water inlet;

Fig. 2 - installation diagram of a storm water inlet in a building structure.

All designations in the figures are identical.

Implementation of the technical solution

The storm water inlet includes a cast-iron drain 1 and a cast-iron funnel 2 having a flange. The cast-iron ladder consists of a body 1.1 with an outlet pipe and an end grate 1.2 placed on top. End grille 1.2 is attached to the upper part of the ladder body 1 with two bolts 3 located diagonally. The outlet pipe of the ladder body 1 is connected to the cast-iron funnel 2 by a polymer shaft pipe 4.

The cast-iron ladder has a body wall thickness of at least 7 mm, and an end grille thickness of at least 12 mm.

Fixing the end grille 1.2 in the body of the drain 1 with a bolted connection prevents its displacement relative to the body during mechanical action on the grate 1.2, for example, when hit by a car wheel, which increases the reliability of the storm water inlet and serves as protection against vandalism. Also, the presence of a detachable connection provides the possibility of cleaning the storm water inlet, which also increases reliability.

The connection of the ladder 1 with the funnel 2 with a polymer shaft pipe 4 excludes the support of the ladder 1 on the roof funnel 4. The pipe 4 is connected to the outlet pipe of the ladder body 1 with an interference fit, and to the funnel 2 with a detachable connection. The length of the pipe 4 lies in the range from 100 mm to 1000 mm.

The connection of the outlet branch pipe of the drain with a cast-iron roof funnel by means of a polymer shaft pipe provides directional drainage without the impact of water flow on the perimeter of the funnel and on the surrounding structure, which prevents the accumulation of sediment and clogging in these places, helps to eliminate leaks, which increases the reliability of the structure. The implementation of the shaft pipe from polymer ensures its corrosion resistance and the integrity of the connections with the ladder and the funnel with possible small displacements or vibrations of the ladder from the impact of a mechanical load on it, which also increases the reliability of the structure. At the same time, if the length of the polymer shaft pipe is less than 100 mm, conditions are created for transferring part of the load from the ladder and the unloading plate through the ground or building structure to the funnel, which can lead to displacement of the funnel, and this reduces the reliability of the storm water inlet. The presence of a polymer shaft pipe that allows you to spread the ladder and the roof funnel to the required distance in the range from 100 to 1000 mm, as well as the presence of perforation over the entire surface of the pipe, provides a multi-level drainage of rain and melt water from the exploited roofs or soil and allows you to install a storm water inlet in bulk soils of various thickness.

The implementation of a two-layer corrugated polymer shaft pipe increases its rigidity and resistance to compression, and also reduces the likelihood of damage to the connection of the pipe with the funnel and with the ladder in case of their possible displacement or vibration in operation, which increases the reliability of the storm water inlet design.

Due to the implementation of a polymer shaft pipe with multi-level perforation, i.e. with holes in the walls, evenly spaced around the circle and along the length of the specified pipe, increases the efficiency and reliability of drainage from the ground along the entire height of the storm water inlet.

When the diameter of the outlet pipe of the drain body is less than 100 mm, the throughput of the storm water inlet deteriorates, which reduces its reliability in operation.

Installing the funnel in the roofing pie at the level of waterproofing/vapor barrier (in the case of using a two-piece funnel) allows you to ensure its fixation at the installation site, and also eliminates leakage, which increases the reliability of the claimed utility model.

Thanks to the execution of the ladder from cast iron, preferably grade SCh-20, and the execution of the walls of the body of the ladder with a thickness of at least 7 mm and the end grate with a thickness of at least 12 mm, it is possible to perceive, without destruction, an intense operational load of up to 12.5 tons, for example, from a cargo wheel load class B125 according to EN 1433, and its distributed transfer to the ground or building structure through the relief plate, without the direct impact of the load on the roof funnel, which prevents the roof funnel from shifting and breaking, which in turn increases reliability and durability of the claimed utility model.

The end grille is made in terms of a square shape with a side length of 250 to 350 mm, preferably 300 mm. With a larger size of the end grid, its reliability decreases due to the occurrence of stresses in the center of the grid under a significant mechanical load that are higher than the permissible ones. With a smaller size of the end grid, its throughput decreases, which worsens the efficiency of drainage and reduces the reliability of the storm water inlet in operation. Thanks to this design, it is possible to install the proposed storm water inlet in places with hard pavement.

The storm water inlet is assembled and installed as follows. A cast-iron roof funnel 2 is installed in the roofing cake, which includes a funnel alignment plate 5 and an insulating plate 6, fixing it in the building structure or the ground. The funnel 2 rests on the insulating plate 6 with a flange. The end of the polymer shaft pipe 4 is installed with a little effort into the bowl of the roof funnel 2, and fixed until a characteristic click. The installed polymer shaft pipe 4 is wrapped with geotextile, which is fixed with clamps or wire (not shown). Next, layers of improvement are formed on the stylobate to the planned height, including around the polymer shaft pipe 4 according to the laying rules. Then, an unloading concrete pad is equipped, which is an unloading plate 5 for a cast-iron ladder 1 so that the outlet pipe of the body 1.1 of the ladder 1 enters the polymer shaft 4 by 30 ... 50 mm. If necessary, for this, the polymer shaft pipe 4 is shortened in advance to the required height in the range from 100 to 1000 mm, for example, 700 mm. A tube 4 is put on the outlet pipe of the ladder body 1.1 with an interference fit. The cast-iron ladder body 1.1 is fixed with an unloading plate 5. An end grate 1.2 is attached to the upper part of the body 1.1 with two bolts 3.

The body 1.1 and the end grate 1.2 of the ladder 1 are made of cast iron, for example, grade SCH-20 with a wall thickness of the body 1.1 of the ladder 1 of at least 7 mm, for example, 8 mm, and a wall thickness of the end grate 1.2 of at least 12 mm, for example, 15 mm , and the size in terms of the end grid 1.2 is set from the range from 250 to 350 mm, for example, 300x300 mm. Next, the finishing layer of the hard coating is laid with a tight fit to the body 1.1 of the ladder 1 through the elastic layer, respectively, completely covering the protruding part of the supporting flange of the body 1.1 of the ladder 1.

The claimed utility model can be applied in the construction of residential complexes, shopping and office centers, and car parking.

Due to the reliable, simple and versatile design of the proposed storm water inlet, it was possible to increase the efficiency and reliability of the removal of rain and melt water from exploited roofs and stylobates with heavy traffic load.

Claims (12)

1. A storm water inlet containing a cast-iron ladder, consisting of a body with an outlet pipe and an end grate placed on top, a cast-iron funnel having a flange, characterized in that the outlet pipe of the ladder body is connected to the cast-iron funnel by a polymer shaft pipe, the end grate is attached to the upper part of the body with a bolt connection, while the cast-iron ladder has a body wall thickness of 7-8 mm and an end grille thickness of 12-15 mm. 2. The storm water inlet according to claim 1, characterized in that the end grid is attached to the upper part of the body with two bolts located diagonally. 3. The storm water inlet according to claim 1, characterized in that the ladder is made of SCH-20 cast iron. 4. The storm water inlet according to claim 1, characterized in that the cast-iron ladder is fixed with an unloading plate. 5. The storm water inlet according to claim 1, characterized in that the cast-iron drain ensures the load class B125. 6. The storm water inlet according to claim 1, characterized in that the end grille is square with a side length of 250 to 350 mm. 7. The storm water inlet according to claim 1, characterized in that the length of the polymer shaft pipe is made from 100 mm. 8. The storm water inlet according to claim 4, characterized in that the length of the polymer shaft pipe is made up to 1000 mm. 9. The storm water inlet according to claim 1, characterized in that the polymer shaft pipe is made of two-layer corrugated. 10. The storm water inlet according to claim 1, characterized in that the polymer shaft pipe is made with multi-level perforations. 11. The storm water inlet according to claim 1, characterized in that the diameter of the outlet pipe of the drain body is at least 100 mm. 12. The storm water inlet according to claim 1, characterized in that the diameter of the outlet pipe of the drain body is not more than 150 mm.

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