Drain closure for stowing or draining a medium from a liquid reservoir, and drain system comprising a drain closure and a drain siphon

Abstract

The invention relates to a drain valve (1) for storing or draining a medium (2) from a liquid reservoir (3) into a drain pipe (4). The drain valve (1) comprises a cover (5), a first baffle (9), and a second baffle (10). The first baffle (9) is airtightly connected to the cover (5). A first storage volume (11) is arranged between the first baffle (9) and the second baffle (10). The second baffle (10) is designed to be sealed and connected to the drain pipe (4). The connection further relates to a drainage system with a drain valve (1) and a drain siphon (20).

Description

[0001] The present invention relates to a drain closure for damming or draining a medium from a liquid reservoir and to a drainage system comprising a drain closure and a drain siphon.

[0002] Drain closures for damming or draining a medium from a liquid reservoir are known from the prior art. To prevent flooding and water damage, drain closures must be designed to provide an overflow device that prevents the liquid reservoir from overflowing. The overflow devices known from the prior art have the disadvantage of being difficult to access and thus difficult to clean. These are usually openings in the reservoir itself or devices in the reservoir's drainage system. A biofilm forms in the overflow devices, which emits unpleasant odors and is unhygienic. In addition, the overflow devices known from the prior art are bulky and require a lot of space that cannot be used for other purposes.

[0003] It is the object of the invention to overcome the disadvantages of the prior art and in particular to provide a drain closure and a drainage system which can be operated safely, is easy to clean and is compact.

[0004] The object is achieved by a drain closure for accumulating or draining a medium from a liquid reservoir and by a drainage system for accumulating or draining a medium comprising a drain closure and a drain siphon according to the independent patent claims.

[0005] In particular, the problem is solved by a drain closure for damming or draining a medium from a liquid reservoir into a drain pipe. The drain closure comprises a cover, a first dam wall, and a second dam wall. The first dam wall is hermetically connected to the cover. A first dam volume is arranged between the first dam wall and the second dam wall. The second dam wall can be sealingly connected to the drain pipe.

[0006] Such a drain closure is simple in design, easy to clean and also very compact and allows for the dedicated drainage of accumulated water at a defined water level.

[0007] It is possible for the first baffle wall and the cover to be connected by a thread. A sealing ring can be located between the first baffle wall and the cover. The sealing ring can be an O-ring. It is possible for the cover to be pushed, i.e. clamped, onto the first baffle wall. When the cover is in the target position, it clicks onto the first baffle wall and preferably penetrates into a recess in the first baffle wall. The cover is then arranged positively on the first baffle wall. This allows the cover to be installed easily and securely. In this variant, too, a seal is preferably arranged between the cover and the first baffle wall so that the connection is airtight.

[0008] It is possible for the second baffle to be placed onto the drain pipe. A seal can be arranged on the second baffle. Sealingly connectable to the drain pipe means that the second baffle and the drain pipe are arranged in such a way that essentially no fluid can penetrate the space between the second baffle and the drain pipe. It is of course possible for a seal to be arranged between the second baffle and the drain pipe as part of the second baffle. The second baffle and the drain pipe are therefore also sealed if there is a seal between the second baffle and the drain pipe, even if the second baffle and the drain pipe are not touching.

[0009] The first dam and / or the second dam can be partially designed essentially in the shape of a hollow cylinder or a hollow truncated cone. It is possible for the second dam to be located within the cavity formed by the first dam. It is also possible for the first dam and / or the second dam to be at least partially designed like the surface of a hollow cuboid. In this case, the drain closure is elongated. Such a drain closure can be used in an area in which a larger surface is to be drained, for example in a shower. It is also possible for the first dam and / or the second dam to be at least partially designed like the surface of a hollow cube.

[0010] The first dam wall is preferably designed such that, in an installation situation, a distance is formed between the dam wall end and the liquid reservoir, so that liquid can flow between the dam wall end and the liquid reservoir.

[0011] The entire drain plug can be made of plastic or a combination of plastics. It's also possible for the entire drain plug to be made of brass and / or chrome steel. A combination of the above materials is also possible. The key is that the drain plug is made of sturdy, corrosion-resistant materials and is cost-effective to manufacture.

[0012] The medium can be a fluid. The medium can be water, where water means a medium that primarily consists of water but may also contain other components such as soap residue and / or dirt particles.

[0013] The liquid reservoir can be, for example, a sink, a shower tray, or a bathtub. The liquid reservoir can also be larger, such as a swimming pool or, in an industrial application, another large basin.

[0014] It is possible that the cover is convex.

[0015] The cover can be designed so that it is convex and curved upwards, counter to the force of gravity. Such a convex design of the cover ensures that a medium located on the cover can flow from the cover under gravity into an area next to the drain closure and from the area next to the drain closure into the drain closure. Such a design of the cover therefore ensures that as little liquid as possible remains in the liquid reservoir when the liquid drains away. In addition, a convex cover is easily accessible for a user and can be advantageously cleaned. Furthermore, the space under the cover is optimized and the flow behavior of the liquid in the drain closure during drainage is also optimized.

[0016] It is possible for the outer shell of the cover to be shaped like a hemisphere. It is also possible for the convex cover to be shaped like part of an ellipsoid. The cover can be substantially rotationally symmetrical. The cover can be substantially linearly symmetrical in plan view. It is also possible for the cover to be elongated.

[0017] It is possible that the cover is formed in one piece with the first retaining wall.

[0018] This allows the drain stop to be constructed from a small number of parts, creating absolute airtightness between the cover and the first retaining wall. This makes the drain stop easy to manufacture and assemble. Furthermore, there are fewer mechanical interfaces between the individual components. This reduces the possibility of defects and makes the drain stop robust and durable.

[0019] One-piece means that the cover and the first retaining wall are designed to be non-removably connected. The cover and the first retaining wall can, for example, be made of plastic and manufactured using an injection molding process. It is also possible for the cover and the first retaining wall to be made of metal. The first retaining wall can be welded to the cover, creating a single piece. It is also possible for the cover to be made of different materials. For example, the cover can be made of a stable, inexpensive, and easily processable material and coated with an aesthetically pleasing and corrosion-resistant material.

[0020] It is possible for the distance between the second retaining wall and the cover to be a maximum of 5 mm. It is possible for the distance between the second retaining wall and the cover to be a maximum of 4 mm. It is also possible for the distance between the second retaining wall and the cover to be a maximum of 2 mm. A minimum distance between the second retaining wall and the cover is 1 mm, in particular 1.8 mm.

[0021] The distance refers to the vertical distance between the second retaining wall and the cover.

[0022] This allows for a compact design of the drain closure and at the same time enables fluid drainage in accordance with standards.

[0023] The second retaining wall and the cover can be connected with a connecting element. It is possible for the connecting element to have a support surface that can be placed on a support of a drainpipe. It is possible for the connecting element to have a support surface that can be placed on a drain insert of a drainpipe.

[0024] Connecting the second retaining wall and the cover with a connecting element enables simple and efficient production of the drain closure and ensures a stable connection between the components. The design of a support surface ensures that the drain closure can be conveniently attached to a drain pipe or drain insert. This makes it easy for users to mount the drain closure on a drain pipe or remove it from the drain pipe for cleaning. This design makes the drain closure easy to maintain and handle.

[0025] The connecting element can comprise a lifting device. The lifting device can move the second retaining wall from a storage position to a drainage position. In the storage position, the second retaining wall is sealingly connected to the drainage pipe. In the drainage position, the second retaining wall is not connected to the drainage pipe.

[0026] The design of a lifting mechanism ensures that the user of the drain cover can easily switch from a storage function to a normal drainage function. At the same time, only one drain cover is visually visible, thus increasing acceptance of this type of drain cover.

[0027] A sealed connection means that essentially no fluid can penetrate between the second retaining wall and the drain pipe. It is, of course, possible to have a seal between the second retaining wall and the drain pipe. Therefore, for a sealed connection, it is not necessary for the second retaining wall and the drain pipe to be in direct contact.

[0028] It is possible for the lifting device to be designed as a thread. The lifting device can, for example, comprise a trapezoidal thread. It is possible for the lifting device to be designed so that it can be clicked into place. The lifting device can then be brought into the storage position by exerting a vertical force and by lowering it from the drainage position, whereby a compression spring located in the lifting device is pre-tensioned during the lowering process. As soon as the lifting device has reached the storage position, the lifting device engages and the drain closure is in the storage position. The lifting device can be unlocked by exerting a further vertical force on the lifting device. The lifting device then moves back into the drainage position due to the force of the pre-tensioned compression spring located in the lifting device.The compression spring located in the lifting device is thus preloaded by the vertical force a user exerts on the lifting device when moving the lifting device from the drain position to the storage position. When a user unlocks the lifting device by exerting a vertical force, the compression spring of the lifting device pushes the second retaining wall away from the drain pipe against the force of gravity. The lifting device is preferably made of brass.

[0029] A maximum of three webs can be arranged between the second retaining wall and the cover or between the second retaining wall and the connecting element.

[0030] The arrangement of a maximum of three bars ensures that no solid objects can become lodged between the bars or between the bars and the second retaining wall and the cover or connecting element, while still ensuring optimal stability of the drain cover. If the drain stopper is installed in a sink, for example, it is extremely unlikely that the drain stopper will become blocked by objects that have fallen into the sink or by hair. This type of arrangement makes the drain stopper blockage-proof and therefore low-maintenance. Even if the drain stopper becomes blocked, it can be easily removed from the drainpipe and cleaned, as described above, so that a blockage, should it occur, can be cleared quickly and easily.

[0031] The removable drain plug also ensures that it can be cleaned in a standard dishwasher. This makes the drain plug extremely hygienic and allows users to conveniently remove the drain plug from the drain pipe and easily clean it.

[0032] It is possible for the cover, the first retaining wall, and the second retaining wall to be made of plastic and / or brass and / or chrome-plated steel. It is also possible for the cover, the first retaining wall, and the second retaining wall to be made of different materials. It is also possible for the cover, the first retaining wall, and the second retaining wall to be made of a combination of different materials. It is also possible for the cover, the first retaining wall, and the second retaining wall to be made of a stable, easy-to-work, and inexpensive material that is coated with another corrosion-resistant material. This way, the components are stable and inexpensive to manufacture, while also being aesthetically pleasing.

[0033] The first storage volume can be annular. In this case, the first storage volume is essentially shaped like a portion of a hollow truncated cone or a portion of a hollow conical cylinder.

[0034] This design of the first storage volume ensures that the drain plug can be conveniently and space-savingly installed in a standard sink, shower tray, or bathtub. The drain plug is thus extremely compact and practical.

[0035] No webs can be formed between the second dam wall and the cover. The space between the second dam wall and the cover is therefore web-free.

[0036] This ensures a simple and stable design for the drain closure and ensures that no solids can become trapped between the second retaining wall and the cover. This design makes the drain closure blockage-proof and flow-optimized.

[0037] The second retaining wall can have a maximum height of 3 cm. The second retaining wall can also have a maximum height of 2 cm. The second retaining wall can also have a maximum height of 1.2 cm. The second retaining wall can also have a maximum height of 0.8 cm.

[0038] The height of the second dam is measured vertically from the lower edge of the first dam, which forms a first overflow edge, to the upper edge of the second dam, which forms a second overflow edge. The height of the second dam is therefore the height a medium must overcome against gravity and air pressure when flushing under the first dam and over the second dam.

[0039] The object is further achieved by a drainage system for damming or draining a medium from a liquid reservoir, comprising a drain closure as described above and a drain siphon. The drain siphon is arranged downstream of the drain closure.

[0040] A second storage volume can be formed in the drain siphon. The second storage volume can have a height that corresponds to the water seal height of the drain siphon. The first storage volume can be 1 to 1.15 times as large as the second storage volume. The first storage volume can be 1 to 1.1 times as large as the second storage volume. The first storage volume can also be 1 to 1.05 times as large as the second storage volume. It is possible for the first storage volume to be 1.125 times as large as the second storage volume.

[0041] If the first storage volume is greater than 1,125 times the size of the second storage volume, a gas mixture from the first storage volume is forced through the drain siphon into the further sewer system, automatically reducing the first storage volume. This is therefore the technical and physical limit up to which the system can operate. If this limit is exceeded due to the design, the first storage volume is filled with the medium until the limit is automatically maintained again.

[0042] Such a system ensures the dedicated drainage of standing water from the liquid reservoir. The medium in the drain siphon is pushed downstream along the seal water level by the medium in the liquid reservoir and in the first retention volume of the drain closure. This ensures that when the liquid reservoir is filled with a medium, the medium in the first retention volume rises more slowly than the medium in the liquid reservoir. This allows for a greater retention height in the liquid reservoir.

[0043] The first storage volume between the first storage wall and the second storage wall is slightly larger than the second storage volume in the siphon.

[0044] The first and second storage volumes are proportional to the storage height in the fluid reservoir. If the first and second storage volumes are increased, the storage height in the fluid reservoir also increases.

[0045] If the second storage volume is smaller than the first storage volume, the gas mixture is forced out of the drain pipe into the further sewer system, thereby reducing the effective first storage volume in the system. The first storage volume is preferably 3% to 15% larger than the second storage volume.

[0046] An overflow section is formed in an area between the overflow edge of the second retaining wall and the cover. By placing a drain siphon downstream of the drainage system, an odor seal is ensured. Due to the suction created by sufficient water pressure above the drain seal during the emptying of the reservoir, the siphon is also quickly emptied, creating suction in turn. This quickly and thoroughly drains the entire system until the pressure equalizes and a water column closes the siphon again.

[0047] The drain siphon can be a tubular siphon or a bottle siphon, for example. Other designs are also conceivable.

[0048] It is possible for a siphon to be arranged downstream of the drain closure, said siphon comprising a first inlet opening, a second inlet opening, a flow region, a diversion section and a flow pipe. The second inlet opening is located downstream of the first inlet opening. The first inlet opening can be larger in cross-section than the second inlet opening. The flow region connects the first inlet opening and the second inlet opening. The flow region is designed so that water can flow through it. The diversion section is located downstream of the second inlet opening and is curved. In cross-section, the diversion section has an outer wall with an outer radius and an inner edge with an inner radius, wherein the outer radius is larger than the inner radius. The flow pipe is located downstream of the diversion section. The flow region is at least partially, preferably completely, conical in shape.The flow area can taper in cross-section in the flow direction of the medium.

[0049] A streamlined cross-section allows the fluid to flow downstream, accelerating it in the process. This enhances the suction effect of the siphoning principle, allowing the fluid in the reservoir to drain quickly through the drain cap and siphon.

[0050] It is also possible that, alternatively or in addition to the previously described siphon, a siphon is arranged downstream of the drain closure, which siphon comprises a first inlet opening, a second inlet opening, a flow region, a deflection section, and a flow pipe. The second inlet opening is located downstream of the first inlet opening. The first inlet opening can be larger in cross-section than the second inlet opening. The flow region connects the first inlet opening and the second inlet opening. The flow region is designed so that water can flow through it. The deflection section is located downstream of the second inlet opening and is curved. In cross-section, the deflection section has an outer wall with an outer radius and an inner edge with an inner radius, wherein the outer radius is larger than the inner radius. The flow pipe is located downstream of the deflection section.In the drain, the second inlet opening is formed eccentrically in the deflection section so that in cross-section it is located closer to the outer wall than to the inner wall.

[0051] Such an eccentric arrangement of the inlet opening closer to the outer wall in the diverter section ensures that the medium flows along the outer wall at a high velocity. This creates additional suction in the siphon and enhances the suction effect of the siphoning principle of the drain closure.

[0052] In the previously described siphon, the volume in the conical section is very small. This allows the drain closure to be constructed extremely compactly, since the volume in the conical inlet is crucial for the design of the first retention volume. Furthermore, the acceleration of the water in the conical section achieves a high flow velocity, which also leads to the required discharge volumes in the drain closure.

[0053] It is possible for the drain pipe to comprise a drain insert, wherein the drain insert can be inserted into the drain pipe on the liquid reservoir and forms a support for the drain plug.

[0054] This makes the drain stopper advantageous and easy to install in the drainpipe and also easy to remove from it again. Users can then easily install the drain stopper in the drainpipe and remove it again. This makes the drain stopper user-friendly and easy to use, and removable for cleaning. Furthermore, it is possible for users to install a drain insert and drain over an existing drain siphon. This allows users to create a drainage system from the existing drain siphon and drain stopper. Existing siphons can be retrofitted to create a drainage system by installing a drain insert and drain stopper.

[0055] The drain insert can be cylindrical in shape. This allows the drain insert to be conveniently arranged in a drain pipe.

[0056] It is possible that the drain insert can be screwed into the drain pipe.

[0057] This ensures that the drain insert can be positioned easily but safely and stably in the drain pipe.

[0058] The thread on the drain insert and the drain pipe can, for example, be a trapezoidal thread.

[0059] It is possible for the drain insert to have one or more seals on its exterior that have a slightly larger diameter than the inner diameter of the drain pipe. The drain insert can then be positioned in the drain pipe, and the seal is compressed during the positioning process. The drain insert is then held in position by both gravity and the seal connecting the drain insert to the drain pipe.

[0060] The drain insert may have a collar.

[0061] Such a collar clearly defines the penetration depth of the drain insert in the drain pipe and the drain insert can be arranged advantageously and precisely in the drain pipe.

[0062] The invention is explained in more detail in the following figures. They show: Figure 1: A schematic diagram of a drainage system with a drain siphon and a medium in the drain siphon. Figure 2: A schematic diagram of a drainage system with a medium in a drain siphon and a medium in a liquid reservoir. Figure 3: A schematic diagram of a drainage system with a medium in a drain siphon, the liquid reservoir, and a medium between a first retaining wall and a second retaining wall. Figure 4: A schematic diagram of a drainage system with a medium in a liquid reservoir, a drain siphon, and between a first retaining wall and a second retaining wall, wherein the medium flows partially downstream. Figure 5: A schematic diagram of a drainage system that is substantially completely filled with a medium, wherein the medium flows downstream. Figure 6: A section of a drainage system with the drain closure in the retaining position. Figure 7: A section of a drainage system that has a tubular siphon.Figure 8: A section through a drain closure in the drainage position, in which the first retaining wall and the cover are formed as a single piece. Figure 9: A section through a drain closure in the retention position, in which the first retaining wall and the cover are formed as a single piece. Figure 10: A section through a drain closure in the drainage position, in which the first retaining wall and the cover are not formed as a single piece. Figure 11: A section through a drain closure in the retention position, in which the cover and the first retaining wall are not formed as a single piece. Figure 12: An exploded view of a drain closure. Figure 13: A view of a drain closure in the retention position. Figure 14: A view of a drain closure in the drainage position. Figure 15: A section through a drainage system, in which a medium is located in the drain siphon.Figure 16: A section through a drainage system, wherein a medium is located in the drain siphon and in the liquid reservoir. Figure 17: A section through a drainage system, wherein a medium is located in the drain siphon, the liquid reservoir, and between the first dam wall and the second dam wall. Figure 18: A section through a drainage system, wherein the medium is formed in the liquid reservoir and downstream essentially entirely in the drainage system. Figure 19: A section through a drainage system, wherein the medium is formed in the liquid reservoir and partially in the drain siphon. Figure 20: A schematic diagram of a drainage system with a first dam volume and a second dam volume. Figure 21: A schematic diagram of a drainage system with a first dam volume and a second dam volume, as well as a first dam diameter and a second dam diameter.Figure 22: A schematic diagram of a drainage system with a first storage volume and a second storage volume as well as a sealing water height.

[0063] Figure 1 shows a schematic diagram of a drainage system 28 with a drain siphon 20 and a medium 2 in the drain siphon 20.

[0064] The drainage system 28 has a drain closure 1. The drain closure 1 is arranged in a liquid reservoir 3. The drain pipe 4 is formed downstream of the drain closure 1. A drain siphon 20 is formed downstream of the drain pipe 4. The drain closure 1 has a first dam wall 9 and a second dam wall 10. A first dam volume 11 is formed between the first dam wall 9 and the second dam wall 10. A first dam diameter 38 is formed between the first dam wall 9 and the second dam wall 10. A second dam volume 40 with a second dam diameter 39 is formed in the drain siphon 20. The second storage diameter 39 is the diameter 39 of the drain pipe 4. The first storage diameter 38 of the first storage volume 11 is slightly larger than the second storage diameter 39 of the second storage volume 40, so that the first storage volume 11 is slightly larger than the second storage volume 40.The height 19 of the second dam wall 10 corresponds to the sealing water height 21 of the drain siphon 20. The first dam wall 9 has a first overflow edge 23. The second dam wall 10 has a second overflow edge 24. The dam height 19 is formed between the first overflow edge 23 and the second overflow edge 24. Downstream of the dam height 19 and at a level above the second overflow edge 24, the overflow section 25 is formed. In addition, the drain closure 1 has a cover 5. The gap 26 is formed between the second dam wall 10 and the cover 5. The medium 2 is formed in the drain siphon 20. The drain siphon 20 has a sealing water height 21. The second dam volume 40 is filled with the medium 2. The first dam volume 11 is not filled with the medium 2. Rather, the first dam volume 11 contains a gas mixture.

[0065] The Figure 2 shows a schematic diagram of a process system analogous to the Figure 1. Unlike in the Figure 1 is in the Figure 2 a medium 2 is present in the liquid reservoir 3. The medium 2 is in the Figure 2 in the liquid reservoir 3 up to a height of the first overflow edge 23 of the first dam wall 9.

[0066] The Figure 3 shows a schematic diagram of a process system analogous to the Figures 1 and 2 Unlike in the Figures 1 and 2 the liquid reservoir 3 is in the Figure 3almost completely filled with the medium 2. In addition, the first storage volume 11 between the first storage wall 9 and the second storage wall 10 is partially filled with a medium 2. The medium 2 in the liquid reservoir 3 pushes the gas in the outlet pipe 4 downstream into the outlet siphon 20, so that the medium 2 in the outlet siphon 20 overcomes the sealing water height 21 of the siphon. When the liquid reservoir 3 is filled, the medium rises into the first storage volume 11 between the first storage wall 9 and the second storage wall 10 through the principle of communicating tubes. The gas in the drain pipe 4 exerts a force on the medium 2 in the first storage volume 11, so that the medium 2 in the region of the first storage volume 11 does not rise as quickly as in the liquid reservoir 3. The medium 2 in the drain siphon 20 is pushed up the sealing water height 21 against the force of gravity in the drain siphon 20.The second storage volume 40 is thus filled with a gas mixture (not shown) from the drain pipe 4. The medium 2 in the first storage volume 11 and the medium 2 in the drain siphon 20 communicate with each other according to the principle of communicating tubes. When the medium 2 penetrates into the first storage volume 11 due to the hydrostatic pressure of the medium 2 in the liquid reservoir 3, the medium 2 in the drain siphon 20 is pushed back against gravity in the direction of the further sewerage system. The medium 2 in the drain siphon 20 exerts pressure on the gas mixture in the drain pipe 4, which is located between the medium 2 in the first storage volume 11 and the medium 2 in the drain siphon 2. The gas mixture in the drain pipe 4 exerts pressure on the medium 2 in the first storage volume 11.Due to this pressure, the medium 2 in the first storage volume 11 rises more slowly than in the liquid reservoir 3 when the liquid reservoir 3 is filled with a medium 2. The interaction of the medium 2 in the drain siphon 20 and the medium 2 in the first storage volume 11 of the drain closure 1 thus enables a large storage height in the liquid reservoir 3.

[0067] The Figure 4 shows a schematic diagram of a process system analogous to the Figures 1 to 3 Unlike in the Figures 1 to 3 Air bubbles slowly form in the drain siphon and the medium 2 flows in the Figure 4from the drain siphon 20 downstream over the sealing water level 21 into the further sewer system. The medium 2 is in the liquid reservoir 3 as well as in the first storage volume 11 between the first storage wall 9 and the second storage wall 10 and up to the height of the second overflow edge 24. Due to the gas pressure in the drain pipe 4, which is exerted by the medium 2 in the liquid reservoir 3, the medium 2 in the drain siphon 20 is pushed downstream against gravity and overcomes the sealing water level 21 of the drain siphon 20. The medium 2 in the drain siphon is thus pushed downstream in the direction of the further sewer system by the hydrostatic pressure of the medium 2 in the liquid reservoir 3, overcoming the sealing water level 21 of the drain siphon 20 and thus reaching the further sewer system.

[0068] Figure 5 shows a schematic diagram of a process system analogous to the Figures 1 to 4 . In the Figure 5the water flows differently than in the Figures 1 to 4 from the liquid reservoir 3 past the first discharge edge 23 through the area of ​​the first storage volume 11 between the first storage wall 9 and the second storage wall 10 over the second overflow edge 24 through the overflow section 25 into the drain pipe 4 and then through the second storage volume 40 and into the drain siphon 20. The medium then overcomes the sealing water level 21 of the siphon and flows into the further sewerage system. In the Figure 5 is different than in the Figures 1 to 4Thus, the first storage volume 11, the second storage volume 40, the overflow section, the drain pipe 4, and the drain siphon 20 are completely filled with the medium 2. In this state, the medium 2 is sucked from the liquid reservoir 3 through the drain closure 1 using the siphon principle toward the drain siphon 20 and toward the further sewer system (not shown). The medium thus flows from the liquid reservoir 3 through the drain closure 1, the drain pipe 4, and the drain siphon 20 toward the further sewer system (not shown).

[0069] The Figure 6 shows a section through a drainage system with a drain closure 1, wherein the drain closure 1 is in the storage position. The same reference numerals designate the same components as in the Figures 1 to 5 . In the Figure 6The cover 5 and the first retaining wall 9 are formed in one piece. The drain plug 1 is the drain plug 1 from the Figure 8 . The details of the drain plug 1 are shown in the figure description of the Figure 8 can be found in the Figure 6 The drain closure 1 is in the retention position. The liquid reservoir 3 is designed as a sink. The sink essentially has the shape of a hollow hemisphere. Due to the hydrostatic pressure of the medium 2 in the liquid reservoir 3, the medium 2 in the drain siphon 2 is pressed against gravity over the sealing water level 21 of the drain siphon 20 in the direction of the further sewerage system. The drain siphon 20 is designed as a bottle siphon. The second retention volume 40 is partially filled with the medium 2. The second retention volume 40 has a second retention diameter 39. The second retention diameter 39 corresponds to the diameter of the drain pipe 4.

[0070] The Figure 7 shows a section through a drainage system analogous to the Figure 6 . Unlike in the Figure 6 the drain siphon 20 is designed as a tubular siphon.

[0071] The Figure 8shows a section through a drain closure 1, which is in the drain position. The drain closure 1 has a first retaining wall 9 and a cover 5. The first retaining wall 9 and the cover 5 are formed as a single piece. The first retaining volume 11 is formed between the first retaining wall 9 and the second retaining wall 10. The overflow section 25 is formed downstream of the first retaining volume 11. The second retaining wall 10 has a retaining height 19. A vertical distance 26 is formed between the second overflow edge 24 of the second retaining wall 10 and the cover 5. The first retaining wall 9 has a first overflow edge 23. The drain closure 1 also has a lifting device 17. The lifting device 17 is essentially cylindrical. The lifting device 17 is part of the connecting element 13. The connecting element 13 connects the second retaining wall 10 to the cover 5.The lifting device 17 lifts the cover 5 as well as the first baffle 9 and the second baffle 10. The drain closure 1 is in the drainage position and a medium (not shown) can flow downstream of the drain closure without the medium having to pass through the first baffle volume. Furthermore, the drain closure 1 has a support surface 14 and a support 15. The drain closure 1 is applied to the support 15 by means of the support surface 14. The drain closure also has a drain insert 16 with an inner wall 37. The drain insert 16 can be inserted into a drain pipe (not shown) using the drain insert 16. The drain insert 16 has a contact surface 27. The contact surface 27 can be made of rubber, for example, or another elastic material. In the . Figure 8the contact surface 27 of the drain insert 16 is ribbed. This ensures a good hold in a drain pipe (not shown). Furthermore, the drain closure 1 has a seal 12. The seal 12 floats in the air and in this state does not seal the second baffle 10 against the drain insert 16. Furthermore, the drain insert 16 has a collar 22. The collar 22 enables the drain insert 16 and thus the drain closure 1 to be arranged precisely and securely in a drain pipe (not shown). The first baffle volume 11 is annular. Both the first baffle 9 and the second baffle 10 are designed in the shape of a truncated cone. The cover 5 is connected to the connecting element 13 by means of a first thread 29. The connecting element 13 is connected to the drain insert 16 by means of a second thread 30. The drain closure 1 has support wings 31.The support wings 31 support the drain closure 1 via the support surface 14 on the support 15.

[0072] The Figure 9 shows a drain closure 1 analogous to the Figure 8 . Unlike in the Figure 8 the drain plug 1 is in the Figure 9 formed in the storage position. In the storage position, the seal 12 seals the second storage wall 10 against the inner wall 37 of the drain insert 16. The seal 27 is sealingly connected to the inner wall 37 of the drain insert 16. A medium (not shown) can therefore flow through the drain closure past the first overflow edge 23 through the first storage volume 11 past the second overflow edge 24 through the overflow section 25 downstream. In the first storage volume 11, the medium must therefore overcome the force of gravity and flows downstream against the force of gravity through the first storage volume 11 between the first storage wall 9 and the second storage wall 10.

[0073] The Figure 10 shows a drain plug analogous to the Figures 8 and 9 Unlike in the Figures 8 and 9 The cover 5 and the first retaining wall 9 are not formed as one piece. Rather, the first retaining wall 9 and the cover 5 are two parts. The sealing ring 8 is arranged between the cover 5 and the first retaining wall 9. Figure 10the drain closure 1 is in the drainage position. In the area of ​​the first overflow edge 23, the first baffle is annular and has an inner diameter 34 of 59 mm. The second baffle 10 has a height 19 of 18 mm. The height of the second baffle 10 is the vertical distance 19 between the first overflow edge 23 and the second overflow edge 24. The cover 5 is rotationally symmetrical and has an outer diameter 33 of 80 mm. In the area of ​​the second overflow edge 24, the second baffle 10 has an inner diameter 32 of 22 mm. A radial distance 36 of 6 mm is formed between the second overflow edge 24 and the lifting device 17. In the drainage position, in which the drain closure 1 is located, the first overflow edge 23 and the collar 22 have a vertical distance 35 of 13 mm.

[0074] The Figure 11 shows a section through a drain closure analogous to the Figure 10. Unlike in the Figure 10 the drain plug 1 is in the Figure 11 in the stowed position. The function of the stowed position is in the Figure 11 analogous to the Figure 9 The distances 32, 33, 34 and 36 are in the Figure 11 trained in the same way as in the Figure 10 . The vertical distance 35 between the first overflow edge 23 and the collar is in the Figure 11 , in which the drain closure 1 is in the storage position, is less designed than in the Figure 10 . In the stowed position ( Figure 11 ) the vertical distance 35 between the first overflow edge 23 and the collar 22 is 3.5 mm. From the drain position ( Figure 10 ) into the stowed position ( Figure 11), the first retaining wall 9, the second retaining wall 10, and the cover 5 are thus lowered by 9.5 mm by the lifting device 17 of the connecting element 13. During the lowering process, the second retaining wall 10 with the seal 12 is partially lowered through the collar 22 into the drain insert 16. During the lowering process, the seal 12 of the second retaining wall 10 comes into sealing contact with an inner wall 37 of the drain insert 16.

[0075] The Figure 12shows an exploded view of a drain closure 1. The drain closure 1 has a cover 5. A sealing ring 8 is arranged between the cover 5 and the first retaining wall 9. The drain closure 1 comprises a first retaining wall 9, a second retaining wall 10 and a first retaining volume 11. The first retaining volume 11 is located between the first retaining wall 9 and the second retaining wall 10. The second retaining wall 10 comprises a second overflow edge 24. The overflow section 25 is formed above the second overflow edge 24. In addition, the drain closure 1 comprises a seal 12 and a connecting element 13. The connecting element 13 is designed as a lifting device 17. The part of the drain closure with the first retaining wall 9 and the second retaining wall 10 can be lifted by the lifting device 17. The drain closure 1 further has a support surface 14 and four webs 18.The support surface 14 allows the drain closure to be placed on a support (not shown). The cover 5, the sealing ring 8, the first retaining wall 9, the second retaining wall 10, the first retaining volume 11, and the seal 12 are rotationally symmetrical. The first retaining volume 11 is annular. Furthermore, the drain closure 1 comprises four support wings 31.

[0076] The Figure 13 shows a view of a drain closure 1 in the storage position. The drain closure 1 has a cover 5. The drain closure 1 also has a first overflow edge 23. The drain closure 1 has a first retaining wall 9 as well as a seal 12, a support surface 14, and support wings 31. The cover 5, the first retaining wall 9 as well as the seal 12 and the first overflow edge 23 are rotationally symmetrical.

[0077] The Figure 14 shows a view of a drain closure analogous to the Figure 13. Unlike in the Figure 13 The drain closure is in the drain position. In the drain position, the lifting device 17 of the connecting element 13 is in the raised position.

[0078] The Figure 15 shows a section of a drainage system analogous to the Figure 7 . Unlike in the Figure 7 The medium 2 is located in the drain siphon 20 without any significant gas pressure acting on the medium 2 in the drain siphon in the drain pipe 4. Essentially, no medium 2 is present in the liquid reservoir 13. The second storage volume 40 is completely filled with the medium 2. The first storage volume 11 is not filled with the medium.

[0079] The Figure 16 shows a section through a drainage system 1 analogous to the Figure 15 . Unlike in the Figure 15 is in the Figure 16a medium is formed in the liquid reservoir 3. The medium 2 in the liquid reservoir 3 is pressed into the first storage volume 11 between the first storage wall 9 and the second storage wall 10 and flows around the first overflow edge 23. The medium 2 in the liquid reservoir 3 exerts a hydrostatic pressure on the medium 2 in the drain siphon 20, so that the medium 2 in the drain siphon is pressed against gravity over the sealing water level 21 of the drain siphon 20 in the direction of the further sewerage system (not shown). The medium 2 in the drain siphon 20 exerts a hydrostatic pressure analogous to the Figure 3due to gravity, pressure is exerted on the gas mixture in the drain pipe 4, which is located between the medium 2 in the first storage volume 11 and the medium 2 in the drain siphon 2. The gas mixture in the drain pipe 4 exerts pressure on the medium 2 in the first storage volume 11. Due to this pressure, the medium 2 rises more slowly in the first storage volume 11 when the liquid reservoir 3 is filled with a medium 2 than in the liquid reservoir 3. The interaction of the medium 2 in the drain siphon 20 and the medium 2 in the first storage volume 11 of the drain closure 1 thus enables a large storage height in the liquid reservoir 3.

[0080] The Figure 17 shows a section through a drainage system 28 analogous to the Figures 15 and 16 Unlike in the Figures 15 and 16the medium 2 is located in the liquid reservoir 3 and in the first storage volume 11 and has penetrated to the level of the second overflow edge 24. The gas in the drain pipe 4 pushes the medium 2 downstream into the drain siphon 20 and in doing so overcomes the sealing water height 21 of the drain siphon 20. The first storage volume 11 is completely filled with the medium 2, while the second storage volume 40 is not filled with the medium 2. The volume of the first storage volume 11, which is filled with the medium 2, is slightly larger than the volume of the second storage volume 40, from which the medium 2 is pushed by the hydrostatic pressure of the medium in the liquid reservoir and in the first storage volume 11.

[0081] The Figure 18 shows a section through a drainage system 28 analogous to the Figures 15 to 17 Unlike in the Figures 15 to 17 is in the Figure 18the entire drainage system downstream of the first overflow edge 23 is flooded with the medium 2. The medium 2 is also formed in the liquid reservoir 3. The Figure 18 shows the state in which the medium 2 flows from the liquid reservoir 3 past the first overflow edge 23 through the first storage volume 11 past the second overflow edge 24 through the drain closure 1 into the drain pipe 4 and from the drain pipe 4 through the second storage volume 40 and the drain siphon 20, wherein the medium 2 overcomes the sealing water height 21 of the drain siphon 20. The Figure 18 thus shows a dynamic state in which the medium 2 is sucked through the drainage system by means of the siphoning principle.

[0082] The Figure 19 shows a section through a drainage system 28 analogous to the Figure 16 . The Figure 19shows a static state of the drainage system. The medium 2 is in the liquid reservoir 3 as well as in the first storage volume 11 and the second storage volume 40. The medium 2 does not flow over the second overflow edge 24. The medium 2 is also not present in the overflow section 25. However, the medium 2 in the liquid reservoir 3 exerts pressure on the gas in the drain pipe 4 due to gravity. The gas in the drain pipe 4 pushes the medium 2 downstream into the drain siphon 20, so that the medium 2 overcomes the sealing water head 21 in the drain siphon 20 against gravity and then flows downstream.

[0083] The Figure 20 shows a schematic diagram of a drainage system 28 with a first storage volume 11 and a second storage volume 40 analogous to the Figure 3. The first storage volume 11 has a first storage diameter 38 and a height 19 and the second storage volume 40 has a second storage diameter 39 and a sealing water height 21. The first storage diameter 38 is slightly larger than the second storage diameter 39. The height 19 corresponds to the sealing water height 21. The first storage volume 11 is thus slightly larger than the second storage volume 40. The storage height in the liquid reservoir 3 depends on the sealing water height 21 in the siphon because the stored medium 2 in the liquid reservoir 3 communicates with the medium 2 in the drain siphon 20 via the first storage volume 11, the gas in the drain pipe 4 and the second storage volume 40 according to the principle of communicating tubes and the medium 2 in the drain siphon 20 presses against gravity over the sealing water height 21 in the direction of the further sewerage system.In such a system, the first storage volume 11 must be slightly larger than the second storage volume 40. If the second storage volume 40 is smaller than the first storage volume 11, the gas mixture is forced from the drain pipe 4 into the further sewer system (not shown), thereby reducing the effective first storage volume 11 in the system. Preferably, the first storage volume 11 is 3% to 15% larger than the second storage volume 40.

[0084] The Figure 21 shows a schematic diagram of a drainage system 28 with a first storage volume 11 and a second storage volume 40 as well as a first storage diameter 38 and a second storage diameter 39 analogous to the Figure 20 . Unlike in the Figure 20The first dam diameter 38 is larger than the second dam diameter 39. However, the second dam wall 10 has a lower height 19 than the sealing water height 21 of the drain siphon 20. The drainage system 28 therefore functions essentially analogously to the drainage system 28 in the Figure 20 .

[0085] The Figure 22 shows a schematic diagram of a drainage system 28 with a first storage volume 11 and a second storage volume 40 as well as a sealing water height 21 analogous to the Figure 20 . Unlike in the Figure 20 is the first dam diameter 38 and the sealing water height 21 of the drain siphon 20 in the Figure 22larger. The first storage volume 11 is slightly larger than the second storage volume 40. With a larger first storage volume 11 and a larger second storage volume 40, a greater storage height in the liquid reservoir 3 is possible. The volume of the first storage volume 11 and the second storage volume 40 is proportional to the storage height of a medium in the liquid reservoir 3.

Claims

1. Drain closure (1) for damming or draining a medium (2) from a liquid reservoir (3) into a drain pipe (4), comprising a cover (5), a first dam wall (9) and a second dam wall (10), wherein the first dam wall (9) is connected to the cover (5) in an airtight manner and a first dam volume (11) is arranged between the first dam wall (9) and the second dam wall (10), wherein the second dam wall (10) can be connected to the drain pipe (4) in a sealing manner.

2. Drain closure (1) according to claim 1, characterized in that the cover (5) is convex.

3. Drain closure (1) according to one of the preceding claims, characterized in that the cover (5) is formed in one piece with the first retaining wall (9).

4. Drain closure (1) according to one of the preceding claims, characterized in that a distance (26) between the second retaining wall (10) and the cover (5) is max. 5 mm, in particular max. 4 mm, further in particular max. 2 mm.

5. Drain closure (1) according to one of the preceding claims, characterized in that the second retaining wall (10) and the cover (5) are connected to a connecting element (13), wherein in particular the connecting element (13) has a support surface (14) which can be placed on a support (15) of a drain pipe (4), in particular a drain insert (16).

6. Drain closure (1) according to claim 5, characterized in that the connecting element (13) comprises a lifting device (17) by means of which the second retaining wall (10) can be brought from a storage position in which the second retaining wall (10) is sealingly connected to the drain pipe (4) into a drain position in which the second retaining wall (10) is not connected to the drain pipe.

7. Drain closure (1) according to one of claims 5 to 6, characterized in that a maximum of 3 webs (18) are arranged between the second retaining wall (10) and the cover (5) or between the second retaining wall (10) and the connecting element (13).

8. Drain closure (1) according to one of the preceding claims, characterized in that the cover (5), the first retaining wall (9) and the second retaining wall (10) are made of plastic and / or brass and / or chrome steel.

9. Drain closure (1) according to one of the preceding claims, characterized in that the first storage volume (11) is annular.

10. Drain closure (1) according to one of the preceding claims, characterized in that no webs (18) are formed between the second retaining wall (10) and the cover (5).

11. Drain closure (1) according to one of the preceding claims, characterized in that the second retaining wall (10) has a height of max. 3 cm, in particular max. 2 cm, further in particular max. 1.2 cm 12. Drainage system (28) for damming or draining a medium (2) from a liquid reservoir (3) comprising a drain closure (1) according to one of the preceding claims and a drain siphon (20), wherein the drain siphon (20) is arranged downstream of the drain closure (1).

13. Drainage system (28) according to claim 12, characterized in that the drain pipe (4) comprises a drain insert (16), wherein the drain insert (16) can be inserted into the drain pipe (4) on the liquid reservoir (3) and forms a support (15) for the drain closure (1).

14. Drainage system (28) according to one of the preceding claims 12 to 13, characterized in that the drain insert (16) can be screwed into the drain pipe (4).

15. Drainage system (28) according to one of the preceding claims 12 to 14, characterized in that the drain insert (28) has a collar (22).

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