WO2017102554A1

WO2017102554A1 - Drainage device for precipitation water

Info

Publication number: WO2017102554A1
Application number: PCT/EP2016/080298
Authority: WO
Inventors: Sascha Klein
Original assignee: Sascha Klein
Priority date: 2015-12-15
Filing date: 2016-12-08
Publication date: 2017-06-22
Also published as: DE102015121874B4; EP3390737B1; DE102015121874A1; EP3390737A1

Abstract

The invention relates to a drainage device (1) for precipitation water that is intended for draining a structure, having a retaining device (4), which encloses a drain (3) of the structure, for solid constituents, such as, in particular, plant parts. In order to avoid a situation in which the collected precipitation water accumulates as a result of blocked passage openings (5) and finally causes damage to the structure, the retaining device (4) is arranged on the drainage device (1) so as to be vertically movable on a guide (7) between an inoperative position and an emergency drainage position. As soon as the liquid level has reached a buoyancy element (9), the buoyancy force of the buoyancy element (9) acts on the retaining device (4), which consequently floats, with the result that a peripheral annular gap is obtained between a bottom-side bearing surface (10) of the retaining device (4) and the collecting surface (2). The backed-up water can thereby flow unhindered into the drain (3), with the thus resulting high flow rate entraining the solid constituents and discharging them through the drain (3) without blockages occurring in the process.

Description

Drainage device for rainwater

The invention relates to a drainage device for drainage of a building, for example a building, for rainwater, comprising a retention device for solid components carried by the rainwater according to the preamble of claim 1.

Such drainage devices for a drainage with water drains surface, such as a flat roof, are already widely used and thus belong to the prior art.

Sealed and essentially flat surfaces on which rainwater, for example, can collect, are dewatered using standard water drains. The discharge capacity of the water drains is dimensioned so that a certain damming height of the water is not exceeded.

Clogging of the passage openings of the dewatering device there is a risk that the calculated maximum liquid level is exceeded.

According to DIN regulations, every roof surface with drainage drained into the building or running along the building shall be equipped with at least one drain and one emergency overflow with free drainage over the building facade.

Emergency drainage is used to remove precipitation whose intensity is above the drainage capacity of the internal drainage system. This case occurs when an extreme downpour causes so much rain that the gullies and their bodies are destroyed

Pipe system and underground line can no longer absorb the rainwater. In this situation, emergency drainage must divert excess water into open spaces, not into the underground. Typical emergency drainage systems are raised Speier built, increases built-in gullies and drains with Anstauring or Attikagullys, which are equipped with an inlet pot, which opens within the insulation level in a horizontally or slightly inclined misplaced drain pipe.

The emergency drainage must therefore provide a high drainage performance. This problem could according to the prior art by correspondingly large-sized

Drain holes and drain pipes are achieved. For structural and architectural reasons, such oversizing is often undesirable.

In practice, sieves or grates are often used to prevent soiling caused by leaves, moss or possible spalling of the structure.

To ensure that rainwater runs smoothly, regular cleaning of this restraint is essential. The necessary ascent to the roof is sometimes difficult and in higher structures often only by specialized companies with the use of expensive equipment to accomplish.

In practice, it proves to be problematic that due to blockages of the retaining device water accumulation may occur. It has been shown that comparatively small accumulations of leaves are already suitable, the

Significantly restricting or completely interrupting the flow of fluid.

Such water collections, which dry out only very slowly, can lead to significant, permanent damage when the liquid level of the water accumulation reaches the height of the seal of the roof and so penetrates into the underlying masonry. This not only affects the accessibility of the area, but can lead to considerable static problems, especially for flat roofs, if, for example, the emergency drainage clogged.

While the restraints in drains of terraces or balconies

Usually are easily accessible and can be cleaned with little effort, this does not always apply to the processes of roof areas. These should therefore be checked and cleaned regularly. There are already known retaining means with a pronounced convex basic shape, which rise far above the level of the collecting surface. Such

Retainers are also referred to as gutter screen or leaf trap. Due to the height associated therewith, the particles are initially retained on the circumference of the retaining device, so that the thus formed accumulation of compacted particles can be overcome with increasing liquid level. However, this storage ring often also grows due to additional particles supplied, so that the water finally accumulates more and more and almost completely closes the retention device.

One might think of providing the retainer with a buzzer to quickly and remotely detect the accumulation of water caused by the obstruction. For this purpose, for example, swimmers who are from a certain

Liquid level trigger a signal.

Such devices, also referred to as water detectors, are available inexpensively for households irrespective of the application relevant here, but in turn require a certain amount of maintenance. In addition, the mostly acoustic signal must also be perceptible, so that suitable locations are limited.

From DE 198 53 009 A1 a dewatering device with a mechanical fitting for a steady rainwater drainage on flat roofs is known, which is then used when the flat roofs are provided with a circumferential attic, so that thereby enclosed roof surface as a buffer for rainwater can be used. The dewatering device throttles the drain to a precisely adjustable amount, so that the time-delayed drain relieves the sewer or receiving water by a drain pipe has two connecting pieces, to which a curved inlet pipe is connected, which is pivotable in the vertical direction. The floating of the inlet pipes at a constant height is controlled by a float, which controls the set flow rate with variable weights.

Similarly, DE 21 62 084 A1 describes a device for dosing the water flow rate of roof drains. A water inlet has one with one

Float-equipped closure, attached by a water-collecting vessel

excess water absorption is closed. The collecting vessel may in this case be arranged above the float or communicate with the closure via a lever, at the free end of which it is expedient to open the closure

supporting balance weight is arranged. DE 37 37 767 A1 describes a water drain with a connection pipe to which a cage is arranged, which contains a connecting pipe blocking the float. The float fills the air space of the vortex created in the outflowing water and thus prevents excessive intake of air.

Furthermore, DE 10 2007 01 1 972 B4 describes a Oberflächenabsauger for ponds, swimming pools or similar waters, which are also referred to as skimmers and serve to suck on the water surface floating contaminants such as leaves or pollen, so that the optically visible contamination is removed.

From US 6,631, 588 B1, a double-shell retaining screen is known whose inner screen is fixed to the drain. The corresponding larger outer sieve has one

buoyant ring, which gives the outer screen at elevated water level buoyancy, so that it floats. A guide connects the two screens, wherein the lifting movement is limited by a stop. For lifting the adhering foliage, the retaining screen is provided with a hollow or foamed plastic structure, in particular a foam ring. If the water on the roof exceeds a certain level, on which the foam ring is normally located, the floats

Foam ring and with it the retaining screen, so that the water can flow freely under the outer sieve.

Furthermore, JP 2007-162 374 A also shows a screen connected to a buoyant body.

Based on this prior art, the present invention seeks to provide a simple and highly effective emergency drainage in the event of clogging of

To provide restraint device.

This object is achieved with a dewatering device according to the features of claim 1. The further embodiment of the invention can be found in the dependent claims.

According to the invention, therefore, in the dewatering device, the retaining device preferably on a guide between a rest position and a

Notentwässerungsposition in which the passage openings for the rainwater significantly increased or more passage openings are opened, movably arranged on the dewatering device and has at least one buoyancy element, which may for example also be an integral part of the retaining device, wherein the buoyancy element with a vertical distance to the collecting surface

positioned on the dewatering device, so that upon reaching a certain liquid height of a water accumulation on the collecting surface a

Buoyancy of the buoyancy element acts, which is greater than one of the movement of the

Retaining device including the buoyancy element in the emergency dewatering position counteracting weight is. In this case, the dewatering device has a relative to the retaining means movable securing means which the

Retention device determines the guide and which is solvable by its buoyancy force when exceeding a predetermined liquid height.

The invention makes use of the fact that, if clogging of the passage openings of the retaining device occurs, the further increase in the

Liquid level of a water accumulation can be effectively avoided up to a limit critical for the building, that from a certain liquid level of the buoyancy of the buoyancy element is used to abruptly increase the Durchlössöffnung significantly or to open other passage openings. For this purpose, the retaining device or individual sections of a grid structure and the particles adhering thereto are raised, so that a strong flow is formed in the process in a very short time. This is also suitable to tear previously adhering particles with it and at the same time to avoid a re-accumulation of particles.

Thus, according to the invention, the clogging of the retention device is not prevented, for example, but the water level of the water accumulation and the energy associated with its sudden removal of the water accumulation are used to discharge the particles into the channel through the drain. It also comes to a clogging of the downpipes. Rather, it has already been shown that the energy of the flowing water effectively prevents re-adhesion of the particles.

By the dewatering device has a relative to the retaining means movable securing means which fixes the retainer on the guide and which is solvable by its buoyancy force when exceeding a predetermined liquid height, the invention prevents particles or other solid components between the roof surface and the retainer can get advised and thereby could interfere with the rising water level due to the sudden opening process resulting suction effect. In this case, the securing means prevents, in particular under the influence of wind, an undesirable movement of individual elements of the Dewatering device, so as to avoid unwanted noise.

Preferably, a holding means is provided, by means of which, when a predetermined liquid level is exceeded, a force which acts against the movement of the retaining device from the rest position into the emergency dewatering position is abruptly reduced or interrupted. Thus, by initially a force, such as a spring force or a magnetic force, biasing the retainer in the direction of the roof surface with increasing water level, the effect is lifted upon reaching the predetermined damming height, and the retainer abruptly jumps upwards under the effect of buoyancy.

For the purposes of the invention, the term buoyancy element is understood to mean both hollow body and solid body. These can be both dimensionally stable and elastic. Furthermore, they can also have, relative to the environment, at least one opening for a free gas exchange with the environment, the opening being arranged on an underside of the buoyancy element facing the rest position. In this case, also downwardly open, shell-shaped buoyancy elements, which include a sufficient volume of air with the water surface with increasing liquid level. The

The buoyancy element may, for example, be torus-shaped at least in sections or be designed as a torus open at the bottom in the main extension plane. Furthermore, the buoyancy element can be realized by spherical or conical basic shapes. The buoyancy force is in practice in particular between 300 g and 500 g.

Although an automatic latching of the retaining device in the

Emergency drainage position is not excluded in principle, should the

Retaining device after dropping the liquid level automatically in the

Return home position so that it is ready for later, re-emergency drainage without manual intervention.

The Absinkbewegung follows directly the liquid level or is optionally delayed but also by means of a suitable device, so that the retainer is temporarily positioned well above the liquid level and dissolve adhering particles by their own weight or as a result of drying. Unlike the prior art, which aims to optimize the geometry or size of the ports, the invention utilizes water retention to create effective flows for self-cleaning purposes. Although the

Dewatering device according to the invention so that it is not entirely maintenance-free, it is ensured even with negligent cleaning and control emergency drainage.

In this case, the dewatering device can be designed so that the

Retaining completely or only partially, namely items of the grid, is moved to the emergency drainage position. In this way, for example, a plurality of small passage openings can be connected to a common larger passage opening. At the same time, a region of the retaining device that is immovable on the dewatering device can also function as a guide for the movable

Meet elements of the restraint.

The movement can take place translationally or in particular in the form of a pivoting movement, in particular in the vertical direction. Such a pivotable embodiment is particularly advantageous if the dewatering device is not arranged in a substantially horizontal collecting surface, but on a wall surface enclosing this.

The buoyancy of the buoyancy element is dimensioned so that the weight of the retainer and the buoyancy element are significantly exceeded, so that attachments can be reliably raised.

The buoyancy element can be designed with respect to its buoyancy or

a plurality of individual buoyancy elements are arranged distributed such that at the same time with the floating of the retainer a tilting movement takes place and this is oriented in the Notentwässerungsposition inclined relative to the rest position. A particularly preferred modification of the invention, however, is achieved even if the

Buoyancy element is arranged concentrically to the retaining means and / or a plurality of buoyancy elements are distributed uniformly on the circumference of the retaining means, so as to ensure a desired, exclusively translational movement.

The movable restraint device could in a highly simplified variant by a traction means, such as a belt, with an immovable area of the

Be connected drainage device, so that the retaining device the

the greatest possible degrees of freedom of movement for the emergency drainage position. The Traction means can also be limited to a mere captive. In contrast, an embodiment of the invention is particularly practical in which the retaining device on a guide in particular translationally between the

Rest position and the emergency drainage position is movable. In this way, the movement of the retaining device follows a structurally predetermined movement path, wherein, in addition, the retaining device reliably returns to the original rest position.

A further embodiment of the invention, which is also particularly useful, is achieved in that the fixing means can be fixed in the drain and / or at an edge region enclosing the drain by means of a frictional fixing. As a result, the dewatering apparatus is suitable for arrangement on virtually any process both in horizontal collecting surfaces and in side walls. The clamp body can also be biased easily in operations with different diameters against the restoring force of elastic regions of the fixing against the Innwandfläche, of course, can also find adapters for different flow shapes or sizes application.

The retaining device may be designed as a sieve or a comb-like rake. Particularly advantageous is a variant of the invention, in which the retaining device has a grid which determines the passage openings. In this case, according to the invention, a grating is understood to mean an arrangement of elongated parts in uniform or uneven intervals, which delimit the passage openings and which can optionally also be crossed.

In addition, the guide in turn can be designed as a grating structure delimiting the passage openings, which in the emergency drainage position the size of the

Passage openings determined.

Furthermore, the guide preferably has a Notentwässerungsposition determining stop for the movement of the retaining device, so that their trajectory is limited. This also avoids that the retainer is deflected by gusts or animals from its rest position so that it no longer returns to the rest position.

However, it is not excluded that the retaining device is detachably or interchangeably arranged on the dewatering device and so for example in a modular design allows the use of different restraints in the same dewatering device.

In a further, likewise particularly advantageous embodiment of the invention, the retaining device has at least two functional elements each equipped with at least one buoyancy element, which assume a relative position deviating from the rest position as the liquid level increases, in which a retaining means of the drainage device fixing the rest position is released. So by the

Buoyancy force acts on the two functional elements in succession and this results in a relative movement, a holding means is actuated, which secures the rest position. Thus, the movement in the emergency dewatering position counteracts not only the weight, but additionally the positive and / or positive fixing force of the holding means. This can be many times higher than the weight.

Preferably, the holding means and / or the securing element is pivotally movable and additionally designed to be movable in translation, in particular by means of a slotted guide, so that a deviating from the main movement direction displacement in

Transverse direction can be realized. For example, a functional element of the retaining device can pivot due to the buoyancy force with a substantially lateral movement component.

Another, particularly practical embodiment is also achieved when the distance of the buoyancy element and / or the retaining device with respect to a plane of the collecting surface is adjustable, so that the buoyancy element relative to the

Retaining device is arranged positionable in several different distances to the collecting surface. In this way, the maximum liquid level of the water accumulation can be adjusted before opening the restraint and these are thus adapted mainly to the structural conditions and requirements of the building.

Furthermore, a variant has proven to be particularly practical, in which the dewatering device comprises a spring element and / or a mass element, contrary to the restoring force or weight of the restraint in the

Emergency drainage position is movable. This can be used to move the

Retaining required force can be increased so that especially weathering does not lead to unwanted movement. Also advantageous is a development of the invention, in which the

Dewatering device has a signal generator for detecting the rest position and / or the emergency dewatering position, so that optionally generates an acoustic or optical signal in conjunction with a sensor, for example, a warning light is activated. Furthermore, it is also possible to integrate a module for preferably wireless remote signal transmission in order, for example, to enable notification by means of mobile terminals.

In a particularly useful embodiment of the invention, the retaining device is kinematically coupled to the buoyancy element such that the lifting movement of

Retaining device relative to the lifting movement of the buoyancy element reinforced, for example, is doubled. Thus, above all, in conjunction with a sudden opening effect results in a short time a very large passage area with a corresponding flow velocity through which the re-adhesion of solid components is largely excluded.

A kinematic coupling element suitable for this purpose can have, for example, a stationary first rack, a second rack connected to the restraining device and a toothed wheel connecting the two racks and connected to the lifting element so as to increase the distance covered.

Of course, other power transmission means, such as gear, or cables, such as a reverse pulley can be used for this purpose.

The invention allows for various embodiments. To further clarify its basic principle, one of them is shown in the drawing and will be described below. This shows in

Fig. 1 is a partially sectioned perspective view of a dewatering device in a rest position;

Fig. 2, the rest position shown in Figure 1 of the dewatering device in a

Front view;

3 shows an unlocked position of the dewatering apparatus in a front view;

4 an emergency dewatering position of the dewatering device in one

perspective view; 5 shows the emergency drainage position shown in FIG. 4 in a front view;

Fig. 6 is a perspective view of a retainer of the dewatering apparatus shown in Figs. 1 to 5;

Fig. 7 is a perspective view of a fixing means of the dewatering apparatus shown in Figs. 1 to 5;

Fig. 8 is a perspective view of one shown in Figures 1 to 5

Buoyancy element of the dewatering device;

9 is a perspective view of a variant of the dewatering device with a display element and a height adjustment in a rest position.

FIG. 10 is a plan view of the dewatering apparatus shown in FIG. 9 in FIG

Rest position;

FIG. 11 is a perspective view of the dewatering device shown in FIG. 9 in an unlocked position; FIG.

FIG. 12 is a perspective view of the dewatering apparatus shown in FIG. 9 in an emergency dewatering position; FIG.

FIG. 13 is a plan view of the dewatering apparatus shown in FIG. 12 in FIG

Notentwässerungsposition;

14 shows a perspective view of a further variant of the dewatering device with a buoyancy element arranged on a lever arm in one

Rest position;

15 is a perspective view of another variant of the dewatering device with a arranged on a lever arm buoyancy element in one

Notentwässerungsposition; 16a is a schematic diagram of a kinematic coupling element for transmitting the lifting movement of the buoyancy element to the retaining device in a rest position;

FIG. 16b shows the kinematic coupling element shown in FIG. 16a

Notentwässerungsposition;

17 is a perspective view of a further variant of the dewatering device with a kinematic coupling element in a perspective view;

FIG. 18 a shows the dewatering device shown in FIG. 17 in a rest position of FIG

Retaining device in a perspective view;

18b, the dewatering device shown in Figure 17 in a

Notentwässerungsposition the retainer in a perspective view;

FIG. 19 shows the drainage device shown in FIG. 17 in a perspective view

Representation from below;

FIG. 20 is a perspective view of a fixing means shown in FIGS. 17 to 19. FIG

Dewatering device.

FIGS. 1 to 8 show a first variant of a dewatering apparatus 1 intended for dewatering a building, not shown, which serves as a drain for rainwater collecting on a collecting surface 2. An essential functional element of the dewatering apparatus 1 relates to a retention device 4 for solid components, which includes a drain 3 of the building and is shown in FIG. 6, in particular plant parts which are carried along by the rainwater and would otherwise settle in the drain 3.

For this purpose, the retaining device 4 has a plurality of through-bars of a grid limited passage openings 5. In this way, the solid components through the

Retaining device 4 collected and can be easily removed. Furthermore, the dewatering device 1 has a fixation means 6, which can be fixed in a clamp-proof manner within an inlet region of the drain 3, shown in a further perspective illustration in FIG.

If the retainer 4 is not cleaned regularly, especially in the fall, when collecting considerable amounts of leaves on the collecting surface 2, the passage openings 5 clog, so that the collected rainwater accumulates and with increasing liquid level there is a risk that backwater in the surrounding Masonry of the structure penetrates and leads there to damage.

In order to remedy this in good time, the retaining device 4 is connected to a guide 7 between the illustrated rest position and a Notentwässerungsposition in

Arrow direction 8 arranged vertically movable on the dewatering device 1, as will be explained in more detail below with reference to Figures 1 to 5.

In Figures 1 and 2, a rest position of the dewatering device 1 is shown, in which a bearing surface 10 of the retainer 4 rests on the collecting surface 2. Two identical buoyancy elements 9 are arranged in a downwardly facing orientation with an acute angle α to the retainer 4. The buoyancy elements 9 have, as can be seen in Figure 8, each radially inwardly facing each other

opposite pins 20 which define a pivot axis 21 of the buoyancy elements 9. These pins 20 are in corresponding bearings 22 of the

Retaining device 4 supported, as shown in Figure 6.

As can be seen in Figures 1 and 2, each buoyancy element 9 is equipped with a securing means 23 which has a radially inwardly directed cantilever 24 which is supported with a vertical slide 25 surface on a peripheral surface of the guide 7. In this case, an upper abutment edge 26 of the securing means 23 by an upper

Catch hook 27 of the guide 7 set in the illustrated rest position. In each case one integral with the retainer 4 spring element 28 biases the associated buoyancy element 9 in the direction of gravity, so that this occupies the predetermined position reliable. In addition, so leads the degree of tolerance of relatively movable components, which is required for proper mobility, so that it can not come to an undesirable noise, for example by rattling noises, especially under the influence of wind. 3 shows an unlocking position in which the buoyancy elements 9 are each pivoted about the pivot axis 21 in the direction of arrow 29 in a common horizontal plane, but have not experienced any vertical displacement relative to the rest position shown in Figures 1 and 2. As you can see, this is done

As a result of the respective pivoting movement, the slider 25 is released from the peripheral surface of the guide 7, wherein the distance b corresponds at least to the radial projection of the catch hook 27 of the guide 7. The upper abutment edge 26 is thereby radially spaced from the catch hook 27 and released in the rest position positive engagement.

As the water level continues to rise, the buoyancy element 9 and the associated retaining device 4 float up to an emergency drainage position shown in FIGS. 4 to 5 due to the increased buoyancy force. The slides slide 25 on both sides on the outside of the fishing hooks 27 along. The

Notentwässerungsposition is reached when an upper annular end face 30 of the retainer 4 bears against the fishing hooks 27, is ensured by the same time their horizontal orientation in the retainer 4 in the Notentwässerungsposition.

At the same time forms at the dewatering device 1, a circumferential annular gap between a bottom-side support surface 10 of the retainer 4 and the collecting surface 2 at a distance a, through which the backwater can now freely flow into the drain 3. Due to the resulting high flow rate, the solid components are discharged through the drain 3, without causing blockages.

FIGS. 9 to 13 show a variant of the dewatering device 1. Compared to the basic form shown in Figures 1 to 8 is in addition to a one hand

Display element 16, on the other hand realized an adjusting device 17 for changing the distance a of the buoyancy element 9 of the collecting surface 2.

For this purpose, the display element 16 has an arm 18, which is arranged parallel to the guide 7 on the end face 30 and which engages over the catch hook 27 on its upper side with a bend 19. In this position, the arm 18 is biased against its elastic restoring force in the direction of the guide 7 at the same time. This angled portion 19 is in arrow shape with a clearly visible to the viewer, preferably colored mark 31

fitted. This overarching position of the bend 19 is in the displacement of the retainer 4 in the unlocked position shown in Figure 1 1 and in particular in interrupted the Notentwässerungsposition shown in Figure 12. As a result, the elastically deformed arm 18 displaces radially outward. Due to a lowering of the retainer 4 due to a sinking water level this bend 19 then hits from above the catch hook 27, but this does not surround the catch hook 27, but slides on this radially outward. For the viewer, in particular from the perspective shown in Figure 13 from above, the outwardly displaced position of the bend 19 thereby optically recognizable that now a contrasting color on a surface of the fishing hook 27 is clearly visible. For the viewer, it is thus clearly indicated that the restraint device 4 must have reached the emergency drainage position at least once since the last check, so that, if appropriate, further control of the sequence may be expedient. To restore the home position, the arm 18 is manually pressed inwards in the direction of the guide 7, so that the

Angle 19 slides on the surface of the fishing hook 27 along inside and finally overlaps it. The dewatering device 1 is now back in the normal position.

The actuating device 17, which is furthermore realized in this variant of the dewatering device 1, serves to set the distance a of the buoyancy element 9 from the collecting surface 2, which, above all, permits rapid adaptation to different gradients of different collecting surfaces 2. For this purpose, the adjusting device 17 has a knurled screw 32, by which the respective buoyancy element 9 relative to an annular support 33 of the retaining device 4 is parallel to a central axis of the dewatering device 1 adjustable. The serving as an abutment for the spring element 28 at the same time

Knurled screw 32 is supported for this purpose with its screw head 34 on the carrier 33 and engages with its threaded portion 35 in a corresponding threaded receptacle 36 of the buoyancy element 9 a. The thus set distance a of the buoyancy element 9

according to the desired activation threshold can be read in a simple manner also on an index 37 with a plurality of latching steps, which additionally support the buoyancy element 9 in the respectively set position.

FIGS. 14 and 15 additionally show a further variant of a simplified one

Dewatering device 1 1 shown. This is intended for universal use, especially in the case of strongly fluctuating accumulation heights. The retaining device 4 is held vertically movable on the fixing means 6, not shown, wherein the fixing means at the same time forms the guide 7 for the retainer 4, and lies with its lower support surface 10 in the rest position shown in FIG

Quilt on. The retaining device 4 is at its end face 30 by means of a Joint 12 is connected to a double-armed lever 13, which on the one hand a

Buoyancy element 14, on the other hand, an adjusting screw 15 has. By means of this

Adjusting screw 15, the lever 13 is supported with increasing water level at the end face 30 of the retainer 4 and moves it into the one shown in Figure 15

Notentwässerungsposition. The adjusting screw 15 allows a trouble-free

Setting the distance a between 2 cm and 15 cm, preferably between 3 cm and 10 cm of the buoyancy element 14 with respect to the collecting surface and thus different storage heights to trigger the Notentwässerungsposition.

FIGS. 16a and 16b show a kinematic coupling element 38 for transmitting and amplifying the lifting movement of the lifting element 9, 14 onto the retaining device 4 in a rest position and in an emergency drainage position. The kinematic coupling element 38 has for this purpose a stationary first rack 39, one with the

Retaining device 4 connected second rack 40 and the two racks 39, 40 connecting, connected to the buoyancy element 9, 14 for transmitting the buoyancy force F gear 41 has. As a result, an increase in the accumulation height around the path h leads to an increase in the retention device 4 by twice the distance H.

Finally, a further variant of a dewatering device 42 is explained in greater detail with reference to FIGS. 17 to 20, which can be fixed to a flow, not shown, by means of a fixing means 43 shown in greater detail in FIGS. 19 and 20.

The dewatering device 42 is provided with a kinematic coupling element 44

equipped, which comprises a traction means 45 according to the principle of a reversible pulley. As can be seen in FIGS. 18a and 18b, the traction means 45 realized by a wire or a cord is fixed at a first end to the fixing means 43 and thus fixedly attached to the collecting surface of the roof. A first end opposite the first end of the fixing means 43 is connected to a sieve-shaped retaining means 46. For this purpose, the traction means is deflected at a deflecting element 47 by approximately 180 °, wherein the deflecting element 47 is connected to a buoyancy element 48. As a result, the lifting force F, which is illustrated by the directional arrow 49 in FIG. 18 b, is transferred by deflection to the retaining device 46, which in relation to the latter

Buoyancy element 48 is moved up twice the way.

As can be seen, the buoyancy element 48 covers the entire retaining device 46, which rests against the underside of the emergency drainage position shown in FIG. 18a. Here, the buoyancy element 48 is in its central region with sieve-shaped Passage openings equipped, which can be omitted in a variant, not shown, so that a completely closed top of the buoyancy element is formed. As a result, the retaining device 46 is optimally protected not only against undesired environmental influences, but resting solid components, such as organic residues, do not burden the kinematic coupling element 44 and the traction means 45th

In order to achieve a jerky or sudden opening of the retaining device 46, which has already proven to be particularly efficient in terms of the thereby achievable, strong flow of backwater in the flow of the collecting surface, the buoyancy of

Buoyancy element 48 initially set a resistance. For this is the

Retaining device 46 connected by the holding force of a magnetic connection 50 with the fixing means 43. As a result, the retaining device 46 is not raised at the beginning of a rising liquid level, regardless of the already acting buoyancy of the buoyancy element. However, as soon as the buoyancy force F exceeds the holding force of the magnetic connection 50, the restraint 46 jumps by twice the amount of the

Buoyancy element 48 upwards.

For power transmission, a second traction means 51 is provided, through which the buoyancy force F at the beginning of the rising liquid level of the buoyancy element 48 on the

Retaining device 46 is transmitted directly without deflection. For clarity, the second traction means 51 is shown in Figure 18a stretched, while the first traction means 45 is guided with sufficient lots. After the triggering of the magnetic connection 50, the lifting movement is in contrast transmitted exclusively by the first traction means 45, so that now a loose occurs in the second traction means 51.

In order to be able to fix the dewatering device 42 at different roof drains without problems, the fixing means 43 is arranged with three equally distributed on the circumference

Clamping bodies 52 which are radially movable by means of a respective threaded spindle 53. As a result, the fixing means 43 can initially be inserted into the drain without resistance. By a subsequent rotational movement of the threaded spindle 53 by means of the respective hand wheels 54, the clamping body 52 move radially outward until they rest against an inner wall surface of the sequence non-positively and the

Dewatering device 42 reliably fix. applicant:

Sasha Klein

Leinestraße 37 A

30827 Garbsen

Our sign: SKL-21 -PCT 08 December 2016

B EZ U G SZ E I C H E N LI STE

1 dewatering device 21 pivot axis

2 collection area 22 storage location

3 Procedure 23 Securing agent

4 Retaining device 24 cantilever

5 opening 25 slides

6 fixing agent 26 contact edge

7 Guide 27 Fishing hook

8 arrow direction 28 spring element

9 buoyancy element 29 arrow direction

10 contact surface 30 end face

1 1 Drainage device 31 Marking

12 Joint 32 Knurled screw

13 lever 33 carrier

14 buoyancy element 34 screw head

15 set screw 35 threaded section

16 Indicator thread receiving

17 actuator index

18 arm coupling element

19 angulation rack

20 spigot rack

a distance

b distance buoyancy

α angle way gear

Drainage device fixative

coupling element

Traction device Retaining device deflecting element

buoyancy element

arrow

Magnetic connection traction means

clamping bodies

screw

handwheel

Claims

Applicant: Sascha Klein Leinestraße 37 A 30827 Garbsen Our sign: SKL-21 -PCT 08. December 2016 PATE NTAN SPR Ü CHE

1 . A drainage device (1, 1 1, 42) for rainwater intended for draining a structure, comprising a retaining device (4, 46) for the

Precipitation water entrained solid components, in particular plant parts, which has a plurality of passage openings (5), and with a fixing means (6, 43) for fixing the dewatering device (1, 1 1, 42) in the region of a drain (3) of a collecting surface (2) of the Building, the retaining means (4, 46) between a rest position and a Notentwässerungsposition, in which at least one passage opening (5) for the

Rainfall significantly increased and / or at least one more

Passage opening is opened, is movably arranged on the dewatering device (1, 1 1, 42) and at least one buoyancy element (9, 14, 48) which with a vertical distance (a) to the collecting surface (2) on the dewatering device (1 , 1 1, 42) is arranged so that upon reaching a certain liquid height of a

Water accumulation on the collecting surface (2) a buoyancy force of the buoyancy element (9, 14, 48) acts which is greater than a weight force counteracting the movement of the retaining device (4, 46) to the emergency dewatering position, characterized in that the dewatering device (1, 1 1, 42) has a relative to the retaining means (4, 46) movable securing means (23) and / or holding means, which the

Retention device (4, 46) on the guide (7) determines and / or one of the movement of the retainer (4, 46) from the rest position to the emergency dewatering position counteracting force generated, wherein the securing means (23) and / or the holding means when the Buoyancy of the buoyancy element (9, 14, 48) in one

predetermined liquid level is solvable.

2. dewatering device (1) according to claim 1, characterized in that the buoyancy element (9) is arranged concentrically to the retaining means (4, 46) and / or a plurality of buoyancy elements (9) uniformly distributed on the circumference of the retaining means (4, 46) are arranged ,

3. drainage device (1) according to claims 1 or 2, characterized

characterized in that the retaining device (4, 46) on a guide (7) in particular translationally between the rest position and the Notentwässerungsposition is movable.

4. dewatering device (1, 1 1, 42) according to at least one of the preceding claims, characterized in that the fixing means (6, 43) in particular frictionally in the process (3) and / or at a the outlet (3) enclosing

Edge region is fixable.

5. Dewatering device (1, 1 1, 42) according to at least one of the preceding claims, characterized in that the retaining means (4, 46) has a passage openings (5) enclosing grid.

6. dewatering device (1, 1 1, 42) according to at least one of the preceding claims, characterized in that the securing means (23) is designed to be pivotable and / or translationally movable, in particular elastically deformable.

7. Dewatering device (1, 1 1, 42) according to at least one of the preceding claims, characterized in that the distance (a) of the buoyancy element (9, 14, 48) and / or the retaining device (4, 46) relative to a plane of Collecting surface (2) by means of an adjusting device (17) is adjustable.

8. dewatering device (1, 1 1, 42) according to at least one of the preceding claims, characterized in that the dewatering device (1, 1 1, 42) has a display element (16) which due to the displacement of the retaining means (4, 46) in the emergency dewatering position occupies a resettable only by a manual intervention indicator position.

9. dewatering device (1, 1 1, 42) according to at least one of the preceding claims, characterized in that the dewatering device (1, 1 1, 42) has a spring element and / or a mass element, against the restoring force or weight of the retaining device ( 4, 46) is movable to the emergency drainage position.

10. Dewatering device (1, 1 1, 42) according to at least one of the preceding claims, characterized in that when a predetermined Liquid height abruptly one of the movement of the retainer (4, 46) from the rest position in the Notentwässerungsposition counteracting force of the holding means is reduced or interrupted.

1 1. Dewatering device (1, 1 1, 42) according to at least one of the preceding claims, characterized in that the holding means comprises a magnetic connection (50).

12. dewatering apparatus (1, 1 1, 42) according to at least one of the preceding claims, characterized in that the retaining means (4, 46) and the buoyancy element (9, 14, 48) are kinematically coupled such that during a lifting movement (h ) of the buoyancy element (9, 14, 48), the lifting movement (H) of the retaining device (4, 46) with a factor x> 1 amplified, in particular doubled.

13. Dewatering device (1, 1 1, 42) according to claim 1 1, characterized in that the dewatering device (1, 1 1, 42) has a kinematic coupling element (38, 44) which a stationary first rack (39), a Having the retaining means (4, 46) connected to the second rack (40) and the two racks (39, 40) connecting, connected to the buoyancy element (9, 14, 48) gear (41).

14, drainage device (42) according to claim 1 1, characterized in that the dewatering device (42) has a kinematic coupling element (44) having a with the retaining means (46) and with a fixing means (43) connected to the traction means (45), wherein a deflection means (47) deflecting the traction means (45) with the

Buoyancy element (48) is connected.