Separating element for a flush tank of a sanitary fitting article, flushing unit for a sanitary fitting article and sanitary fitting article

Abstract

The present invention relates to a flushing unit (10) with a separating element (12), which achieves significant improvements over DE 20 2021 103 577 U1. Thus, the separating element (12) does not generate any additional noise when filling the flushing container (14), and the proper functioning of the filling valve is ensured. Furthermore, the flushing volume can be adjusted very precisely, and particularly in the closed position of the separating element (12), it can be adjusted particularly precisely to the exact requirements of the sanitary fixture to be flushed. Furthermore, the separating element (12) is structurally very simple in terms of its range of functions and can be manufactured cost-effectively.

Description

[0001] The present invention relates to a separating element for a flushing container of a sanitary fitting according to the preamble of claim 1, a flushing unit for a sanitary fitting according to the preamble of claim 11 and a sanitary fitting according to the preamble of claim 14.

[0002] Examples of sanitary fittings include bidets, urinals, and toilets. These sanitary fittings are flushed after use using a flushing container.

[0003] Flushing containers should provide a sufficient amount of flushing fluid to achieve optimal flushing of the sanitary fixture. In this context, it is already known to offer a choice of different flushing fluid volumes, for example, to comply with different legal requirements in different countries or to adapt the flushing fluid volume to the different requirements of different sanitary fixtures, so that these requirements can be met with a single flushing unit.

[0004] EP 3 321 431 A1 discloses the possibility of enabling these different flushing fluid volumes using adjustable drain fittings. However, these drain fittings are quite complex in design. Furthermore, they are difficult to adjust in concealed installations.

[0005] On the other hand, from DE 20 2021 103 577 U1, which is considered to be the closest document to the prior art, it is known to provide different amounts of rinsing liquid by arranging an openable bulkhead as a separating element in the rinsing container, which separates two rinsing liquid receiving areas of the rinsing container from each other.

[0006] A disadvantage of this design is that when the bulkhead is closed, the flushing liquid flows over an overflow edge into a flushing liquid holding area, which can be associated with additional noise compared to flush containers without a separating element. In addition, the aim is for the float of the filling valve to only react when both flushing liquid holding areas are completely full. However, this is rarely or not at all possible in many cisterns due to low installation heights and limited arrangement options. In this case, the filling valve closes even though one flushing liquid holding area is not yet completely full. Due to leaks, the fill level in the fully filled flushing liquid holding area will now drop again, causing the float to drop slightly again, which results in a reduced closing force on the filling valve.

[0007] Based on DE 20 2021 103 577 U1, the object of the present invention is to achieve an improvement. Preferably, the separating element should not generate any additional noise when filling the flushing tank. In particular, a properly functioning filling valve should be ensured, even with spatially limited arrangement options within the cistern.

[0008] This object is achieved with the separating element according to the invention according to claim 1, the flushing unit according to the invention according to claim 11 and the sanitary fitting according to the invention according to claim 14. Advantageous further developments are specified in the dependent claims and in the following description together with the figures.

[0009] The inventors recognized that this problem can be solved in a surprising and particularly simple manner if the separating element has means for allowing rinsing liquid (in particular fresh or used water) to pass through the separating element during the filling process of the rinsing container, wherein these means are configured to prevent rinsing liquid from passing through the separating element during the rinsing process. Then, during the filling process, the rinsing liquid can very easily fill both rinsing liquid receiving areas without the rinsing liquid having to overflow an overflow edge. The associated noises can therefore be avoided.

[0010] The separating element according to the invention for a flushing container of a sanitary fitting is adapted to separate at least two flushing liquid receiving areas of the flushing container from one another in a closed position of the separating element and to connect them to one another in an open position of the separating element, and is characterized in that the separating element has at least one closure means which is designed to change its position in the closed position under the action of a hydrostatic pressure in a first direction so that the closed position is opened, and under the action of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element is maintained, or ii) changes its position so that the separating element is moved into the closed position.

[0011] The closure means is thus designed as a check valve.

[0012] Within the context of the present invention, "opening the closed position" is to be understood as "moving into a non-closed position." The non-closed position may be the open position, but it does not have to be. In particular, the separating element does not have to be in a fully open position; instead, it is sufficient if the separating element is only opened enough to allow the fluid to flow from one rinsing fluid receiving area to the other.

[0013] In the context of the present invention, "being moved into the closed position" is to be understood as "being moved from a non-closed position to the closed position." Therefore, the separating element does not have to be moved from the open position to the closed position.

[0014] Smaller leakage quantities are not excluded in each case when, within the scope of the present invention, reference is made to a "non-passage" of a "closed position", a "complete closure" or a "blockage".

[0015] Overall, within the scope of the present invention, a distinction is made between the open position, which is deliberately manually adjusted on the separating element, and the non-closed position, which the separating element can automatically assume under the influence of hydrostatic pressure in a specific opening direction. In contrast, the hydrostatic pressure cannot cause an opening in the opposite direction to the opening direction, but only a closing.

[0016] In an advantageous development, it is provided that a recess or an opening is provided on the separating element, which is closed by the closure means in the closed position, wherein a sealing means is preferably arranged between the recess or opening and the closure means, wherein at least one recess or opening is arranged in a bottom region of the separating element. The separable rinsing fluid volume is then maximized.

[0017] In an advantageous development, the separating element has a longitudinal extension that is vertically aligned. This also maximizes the separable rinsing fluid volume.

[0018] In an advantageous development, the closure means is movably arranged on the separating element, wherein the closure means is preferably arranged rotatably about a bearing arranged on the separating element, wherein the bearing extends in particular horizontally or vertically. This allows the transition of the closure means into the non-closed position to be provided particularly easily.

[0019] In an advantageous further development, the closure means is designed to be flexible. This also allows for the transition of the closure means into the non-closed position to be provided particularly easily.

[0020] In an advantageous further development, the closure means rests against the recess or opening only on one side in the closed position and is lifted away from the recess or opening in the non-closed position. This makes the separating element particularly simple in design.

[0021] In an advantageous further development, the closure means is designed to be horizontally displaceable. This also makes it particularly easy to transition the closure means into the non-closed position.

[0022] In an advantageous development, the closure means is designed to be vertically movable. This allows the open and closed positions to be adjusted particularly easily and without effort.

[0023] In an advantageous development, at least one locking means is provided for securing a working position, preferably for securing the open position. This secures the respectively set working position (open position and closed position) of the separating element against unintentional adjustment.

[0024] In an advantageous development, the closure means is arranged on an arm, which preferably runs in a guide of the separating element. The guide, in particular, has a play for the arm that widens in the direction of the closure means, thus providing pivotability of the arm. This makes it particularly easy to open the arm under the influence of hydrostatic pressure.

[0025] In an advantageous further development - for which also regardless of whether a closure means exists which is designed to change its position in the closed position under the influence of a hydrostatic pressure in a first direction so that the closed position is opened, and under the influence of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element is maintained, or ii) changes its position so that the separating element is transferred into the closed position, independent protection is claimed - it is provided that the separating element has at least one lockable overflow edge which, in the unlocked state, allows the overflow of flushing liquid from one of the two flushing liquid receiving areas into the other of the two flushing liquid receiving areas. Independent protection is therefore claimed for such a lockable overflow edge in connection with a separating element for a flushing container of a piece of sanitary equipment. Preferably, a filling valve of a flushing unit is designed such that the flushing liquid level is arranged vertically above the overflow edge.

[0026] This lockable overflow edge is therefore not the overflow edge described in DE 20 2021 103 577 U1 for transferring flushing fluid during filling, as this overflow edge cannot be locked but always remains at a specific vertical level. Instead, it is an overflow edge that can be specifically released for overflow when the lock is released. This lockable overflow edge allows for even more precise metering of the flushing fluid quantity, which is blocked by the separating element in its closed position during flushing.

[0027] If there are at least two lockable overflow edges and the first lockable overflow edge is positioned vertically higher than the second lockable overflow edge, then at least two different amounts of flushing liquid can be dosed.

[0028] In an advantageous refinement, it is provided that the first lockable overflow edge is formed at a recess or opening and / or the second lockable overflow edge is formed at a recess or an opening of the separating element. Thereby, the lockable overflow edges are particularly simple to implement in terms of construction. For example, it could be two adjacent recesses of the separating element that have a different vertical distance from an upper edge of the separating element. However, it is preferred if there is an opening at which the second lockable overflow edge is arranged, with this opening being arranged vertically below a recess or an opening at which the first lockable overflow edge is arranged, because then the separating element can be formed very compactly.

[0029] In an advantageous further development, it is provided that the separating element has at least one closure means which exists in the region of the first overflow edge and / or second overflow edge, wherein the closure means for the first lockable overflow edge and the closure means for the second lockable overflow edge are preferably designed as a uniform closure means, wherein the uniform closure means is designed in particular as a vertical slide which optionally blocks the first lockable overflow edge and releases the second lockable overflow edge, releases the first lockable overflow edge and blocks the second lockable overflow edge or blocks both the first lockable overflow edge and the second lockable overflow edge.Alternatively, the single slide valve can also be designed to selectively release both the first lockable overflow edge and the second lockable overflow edge, release the first lockable overflow edge and lock the second lockable overflow edge, or lock both the first lockable overflow edge and the second lockable overflow edge. Even in this case, the separating element can be designed with a particularly simple structure.

[0030] In an advantageous development, two different closure means are provided, with a first closure means located at the bottom of the separating element and a second closure means located in the area of ​​the overflow edge. This allows the closed or open position and the precise dosage of the shut-off flushing fluid quantity to be adjusted independently of one another.

[0031] In an advantageous development, at least one recess or opening has a passage area for the liquid of at most 3,000 mm 2 , preferably at most 2,000 mm 2 , in particular at most 1,000 mm 2 . This ensures an unhindered flushing process while simultaneously enabling sufficient stability. Preferably, however, the passage area should not be less than 500 mm 2 .

[0032] In an advantageous development, the distance of the closure means from the at least one recess or opening in the non-closed position is in the range of 1 mm to 15 mm, preferably in the range of 3 mm to 12 mm, in particular in the range of 6 mm to 9 mm. This ensures a rapid filling process of the rinsing fluid receiving area, which is blocked off from the drain valve by the separating element.

[0033] In an advantageous further development - for which also regardless of whether there is a closure means which is designed to change its position in the closed position under the influence of a hydrostatic pressure in a first direction so that the closed position is opened, and under the influence of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element is maintained, or ii) changes its position so that the separating element is transferred to the closed position, independent protection is claimed - it is provided that there is a chamber that projects laterally relative to the vertical and preferably extends laterally offset relative to the closure means. The rinsing liquid receiving area that is blocked off from the drain valve by the separating element can then be given a particularly large volume. This volume thus projects into a correspondingly reduced volume of the rinsing liquid receiving area that is not blocked off from the drain valve by the separating element. Alternatively, the rinsing liquid receiving area that is not blocked off from the drain valve by the separating element can also be given a particularly large volume.For such a chamber which projects laterally relative to the vertical, independent protection is claimed in connection with a separating element for a flushing container of a sanitary fitting.

[0034] In an advantageous further development - for which also regardless of whether a closure means exists which is designed to change its position in the closed position under the influence of a hydrostatic pressure in a first direction so that the closed position is opened, and under the influence of a hydrostatic pressure in a second direction opposite to the first direction i) its position does not change so that the closed position of the separating element is maintained, or ii) its position changes so that the separating element is transferred to the closed position, independent protection is claimed - it is provided that the separating element is box-shaped. Even then, the flushing liquid receiving area blocked off from the drain valve by the separating element can be given a particularly large volume. This volume thus projects into a correspondingly reduced volume of the flushing liquid receiving area not blocked off from the drain valve by the separating element. Alternatively, the flushing liquid receiving area not blocked off from the drain valve by the separating element can also be given a particularly large volume. For such a box-shaped design of the separating element, independent protection is therefore claimed in connection with a separating element for a flushing container of a sanitary fitting.

[0035] Independent protection is claimed for the flushing unit according to the invention for a sanitary fitting, comprising a flushing container, a filling valve with a flushing liquid inlet, a flushing liquid outlet, a drain valve connected to the flushing liquid outlet, and a separating element, wherein the separating element is adapted to separate at least two flushing liquid receiving areas of the flushing container from one another in a closed position of the separating element and to connect them to one another in an open position of the separating element, which is characterized in that the separating element has at least one closure means which is designed to change its position in the closed position under the action of a hydrostatic pressure in a first direction so that the closed position is opened, and under the action of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element is maintained, or ii) changes its position so that the separating element is moved into the closed position.

[0036] In an advantageous further development, it is provided that the separating element is designed as the separating element according to the invention.

[0037] In an advantageous development, it is provided that the filling valve corresponds to a first rinsing liquid receiving area, wherein a second rinsing liquid receiving area exists, wherein the separating element is arranged between the first rinsing liquid receiving area and the second rinsing liquid receiving area, wherein the second direction is a direction from the second rinsing liquid receiving area to the first rinsing liquid receiving area. This creates a back-blocking direction of the closure means, designed as a check valve, from the second rinsing liquid receiving area to the first rinsing liquid receiving area.

[0038] The fact that the "filling valve corresponds to the first rinsing liquid receiving area" means in this case that the first rinsing liquid receiving area is filled directly by the filling valve, while the second rinsing liquid receiving area is filled only indirectly by the filling valve via the first rinsing liquid receiving area.

[0039] This filling occurs during normal operation of the filling valve, i.e., when the filling valve shuts off after a certain fill level is reached in the first flushing fluid intake area. In the event of a filling valve failure, the second flushing fluid intake area can also be filled through the filling valve by overflow via the separator element after the certain fill level is exceeded. However, even then, indirect filling occurs because the incoming water first flows into the first flushing fluid intake area.

[0040] In an advantageous further development - for which also regardless of whether a closure means exists which is designed to change its position in the closed position under the influence of a hydrostatic pressure in a first direction so that the closed position is opened, and under the influence of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element is maintained, or ii) changes its position so that the separating element is transferred to the closed position, independent protection is claimed - it is provided that the separating element is designed with a chamber that projects laterally relative to the vertical and preferably extends laterally offset relative to the closure means. The volume of the flushing liquid receiving area blocked off from the drain valve by the separating element is then particularly large. Alternatively, the flushing liquid receiving area not blocked off from the drain valve by the separating element can be given a particularly large volume. Independent protection is therefore claimed for such a chamber that projects laterally relative to the vertical in connection with a flushing unit for an item of sanitary equipment.

[0041] In an advantageous further development - for which also regardless of whether a closure means exists which is designed to change its position in the closed position under the influence of a hydrostatic pressure in a first direction so that the closed position is opened, and under the influence of a hydrostatic pressure in a second direction opposite to the first direction i) its position does not change so that the closed position of the separating element is maintained, or ii) its position changes so that the separating element is transferred to the closed position, independent protection is claimed - it is provided that the separating element is box-shaped. Even then, the volume of the flushing liquid receiving area blocked off from the drain valve by the separating element is particularly large. Alternatively, the flushing liquid receiving area not blocked off from the drain valve by the separating element can be given a particularly large volume. For such a box-shaped design of the separating element, independent protection is therefore claimed in connection with a flushing unit for an item of sanitary equipment.

[0042] In an advantageous development, at least one region of the chamber or cistern extends at least partially around a region of the drain valve. This allows the volume of the flushing fluid receiving area blocked off from the drain valve by the separating element to be kept particularly large. Furthermore, this allows the separating element according to the invention to be used for cisterns in a highly compact form and with very limited installation space.

[0043] In an advantageous development, the drain valve comprises a valve cage, wherein the chamber or box maintains a radial distance around the valve cage of at least 3 mm, preferably at least 5 mm, in particular at least 6 mm, with respect to the horizontal in relation to a central axis of the drain valve. This is therefore the radial distance between the outer wall of the valve cage and the chamber or box. A rapid flushing process is then not impeded by the separating element. In particular, a laminar flow pattern of the flushing flow is not disrupted.

[0044] With the above-described design features of the separating element, the separation of the two rinsing fluid intake areas can be brought close to the drain valve. This ensures that even with narrow rinsing containers, the rinsing fluid level in both rinsing fluid intake areas is the same for a given rinsing fluid volume (e.g., 4 L in one rinsing fluid intake area and 2 L in the other), thus ensuring optimal space utilization in the rinsing container.

[0045] In an advantageous development, it is provided that the separating element has a base region and two opposite side regions, which together form a circumferential region of the circumference of the separating element, wherein the rinsing container has a receptacle for the separating element, in which the circumferential region of the circumference is received, wherein the receptacle is preferably designed as a groove, wherein the separating element is arranged in particular in a fitting, preferably fluid-tight manner in the receptacle. This provides a particularly effective barrier against the passage of liquid between the rinsing liquid receiving regions during the rinsing process.

[0046] In an advantageous development, the fill valve and the drain valve are arranged in the same flushing fluid intake area. This allows the flushing unit to be designed particularly compactly.

[0047] Furthermore, independent protection is claimed for the sanitary fitting according to the invention with a flushing unit, which has a flushing container, a filling valve with a flushing liquid inlet, a flushing liquid outlet, a drain valve connected to the flushing liquid outlet and a separating element, wherein the separating element is adapted to separate at least two flushing liquid receiving areas of the flushing container from one another in a closed position of the separating element and to connect them to one another in an open position of the separating element, which is characterized in that the separating element has at least one closure means which is designed to change its position in the closed position under the action of a hydrostatic pressure in a first direction so that the closed position is opened, and under the action of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element is maintained, or ii) changes its position so that the separating element is moved into the closed position.

[0048] In an advantageous further development, it is provided that the separating element is designed as the separating element according to the invention.

[0049] In an advantageous further development, it is provided that the rinsing unit is designed as the rinsing unit according to the invention.

[0050] In an advantageous further development, the sanitary fitting is a toilet, a urinal, a bidet or a shower toilet.

[0051] The features and further advantages of the present invention will become clear below from the description of a preferred embodiment in conjunction with the figures. These show, purely schematically: Fig. 1 the rinsing unit according to the invention with the separating element according to the invention according to a preferred embodiment in a first working position in a partially sectioned view in perspective from the front, Fig. 2 the rinsing unit according to the invention according to Fig. 1 in a frontal sectional view, Fig. 3 the rinsing unit according to the invention according to Fig. 1 in a further partially sectioned view in a first perspective from the front, Fig. 4 the rinsing unit according to the invention according to Fig. 3 in the further partially sectioned illustration in a second perspective from the front, Fig. 5 the rinsing unit according to the invention according to Fig. 1 in a second working position in a partially sectioned view in perspective from the front, Fig. 6 the rinsing unit according to the invention according to Fig. 5 in a frontal sectional view, Fig. 7 the rinsing unit according to the invention according to Fig. 1 in a first vertical sectional view, Fig. 8 the rinsing unit according to the invention according to Fig. 1 in a second vertical sectional view, Fig. 9 the rinsing unit according to the invention according to Fig. 1 in a third vertical sectional view, Fig. 10 the rinsing unit according to the invention according to Fig. 1 in a plan view, Fig. 11 the separating element according to the invention according to Fig. 1 in a front view, Fig. 12 the separating element according to the invention according to Fig. 1 in a view from behind, Fig. 13 the separating element according to the invention according to Fig. 1 in a side view in the first working position and in the closed position, Fig. 14 the separating element according to the invention according to Fig. 1 in a side view in the first working position and in the non-closed position, Fig. 15 a first detailed view in section through the separating element according to the invention according to Fig. 1 , Fig. 16 a second detailed view from the front of the separating element according to the invention according to Fig. 1 , Fig. 17 a third detailed view from behind of the separating element according to the invention according to Fig. 1 , Fig. 18 a fourth detailed view from behind of the separating element according to the invention according to Fig. 1 , Fig. 19 a fifth detailed view from the front of the separating element according to the invention according to Fig. 1 and Fig. 20 a sixth detailed view in the form of a partial section through the separating element according to the invention according to Fig. 1 .

[0052] In the Fig. 1 bis 19 The flushing unit 10 according to the invention with the separating element 12 according to the invention is shown in various views. This flushing unit 10 serves to flush a sanitary fitting, for example a toilet (not shown). The Fig. 7 bis 10 The views shown show various vertical sections, where Fig. 7 a cut at a height of 14 mm, Fig. 8 a cut at a height of 44 mm, Fig. 9 a cut at a height of 144 mm above the ground, and Fig. 10 show a top view.

[0053] It can be seen that the flushing unit 10 comprises, in addition to the separating element 12, a flushing container 14, a support plate 16 for wall mounting of the flushing unit, a drain fitting 18 with a drain valve 20 with valve cage 21, a filling valve 22 with a float unit 24, and a flushing bend 26.

[0054] For better clarity, the drain fitting 18 is in the Fig. 1, 2 , 5, 6 not shown completely and the support plate 16 is in the Fig. 3, 4 not shown. This drain fitting 18 interacts in the usual way with an operating unit (not shown), whereby the desired flush can be triggered.

[0055] With regard to the function of the carrier plate 16 and its interaction with the rinsing container 14, the drain valve 20 and the rinsing bend 26, reference is made to patent application DE 10 2023 123 249.5, which was not yet published at the time of filing the present patent application, the relevant content of which is hereby incorporated in its entirety.

[0056] The rinsing container 14 has an interior space 28 that can be filled with a rinsing liquid (not shown) via the filling valve 22. The separating element 12, which extends vertically with its longitudinal extent L, divides this interior space 28 into two rinsing liquid receiving areas 30, 32, namely a first rinsing liquid receiving area 30, in which the drain fitting 18 with the drain valve 20, the filling valve 22, and the float unit 24 are arranged, and a second rinsing liquid receiving area 32. The first rinsing liquid receiving area 30 has a volume of approximately 4 L, while the second rinsing liquid receiving area 32 has a volume of approximately 2 L, whereby deviations in the decimal range are tolerated.

[0057] To control the filling quantity, there is a float 34 on the float unit 24, which, via a mechanism (not shown), blocks the filling valve 22 when a certain filling level is reached, so that no further rinsing liquid can be supplied to the first rinsing liquid receiving area 30.

[0058] The filling valve 22 has a rinsing fluid connection 36 which is held in a receptacle 38 of the separating element 12 (cf. Fig. 3, 4 ), whereby a corresponding flexible connecting hose (not shown) is clamped downwards in a recess 40 of the rinsing container 14.

[0059] The separating element 12 is box-shaped with a flange 42 and a chamber 44 arranged thereon. A tongue 46 is located on the flange 42, which snugly engages a groove 48 in the rinsing container 14. This groove 48 extends from a side wall 50, across the base 52 to the opposite side wall 54. The tongue 46 runs continuously along the circumference of the flange 42 in the region of the groove 48.

[0060] The spring 46 is clamped in the groove 48, whereby a sealing of the two flushing liquid receiving areas 30, 32 is achieved, even without a separate sealing element between the groove 48 and the spring 46, which could of course still be provided.

[0061] To stiffen the separating element 12, a continuous stiffening rib 60 is arranged on a lateral surface 56 of the chamber 44 and the lower region 57 and the upper region 58 of the flange 42 (cf. Fig. 1 , 5 ,7 , 8 ). This stiffening rib 60 extends freely through a central recess 62 of the chamber 44, whereby the stiffening rib 60 thereby divides the chamber into two chamber sections 64, 66, which communicate with each other only via the central recess 62. However, openings (for example in the stiffening rib 60) could also be provided so that the two chamber sections 64, 66 can communicate with each other through these openings - this as long as it is ensured that the chamber 44 itself fluidically separates the two rinsing liquid receiving areas 30, 32 from each other.

[0062] Below the chamber 44 there is a rectangular opening 68 in the flange 42, through which the stiffening rib also runs (cf. Fig. 5 ).

[0063] Furthermore, there are two slides 70, 72 on the separating element, the first slide 70 serving to switch the rinsing liquid volume from 4 L (small rinsing volume) to 6 L (large rinsing volume) and the second slide 72 serving to dose the small rinsing volume to 4 L, 4.5 L and 4.8 L.

[0064] The first slide 70 has an arm 74 on which a first closure means 76 is arranged in a hammerhead shape. The surface of the first closure means 76 is dimensioned such that it can cover the opening 68; the surface of the first closure means 76 therefore protrudes slightly beyond the clear area of ​​the opening 68.

[0065] The first slide 70 is guided vertically displaceably in a first slotted guide 78 (see also Fig. 15 ), which consists of two oppositely arranged guide surfaces 80, 82, which are connected to one another on the front side 84 of the separating element 12 by the flange 42 with ribs 86, 88, 90, 92 and on the back side 94 of the separating element 12 by a bridge 96 and are thereby stiffened.

[0066] By vertically displacing the arm 74 in the first link 78, the slide 70 can be moved from its position closing the opening 68 with the closure means 76 (cf. Fig. 1 - 4 , 13 ) into a raised position in which the slide 70 with its closure means 76 completely releases the opening 68 (cf. Fig. 5, 6 ). Furthermore, there are two tabs 98a, 98b that overlap the first link 78 on the rear side of the separating element 12 on both sides.

[0067] Since the arm 74 has a very great length, which could lead to a lateral displacement of the closure means 76, there is a groove 99 on the first slider 70, which runs in a form-fitting manner on the stiffening rib 60, so that there is a vertical guide for the first slider 70 over its entire vertical height.

[0068] While the arm 74 has a constant thickness over its length held in the first link 78 between the front side 84 and the rear side 94 of the separating element 12, the distance of the bridge 96 from the ribs 86, 88 opposite it is smaller than between the tabs 98a, 98b and the ribs 90, 92 opposite them (cf. Fig. 15 ). As a result, the arm 74 has a play in the link 78 such that it can be pivoted between a flat contact with the struts 86, 88, 90, 92 to a contact with the strut 86 and a contact with the tabs 98a, 98b in the direction of the rear of the separating element 12. With respect to this pivoting, the strut 86 or its upper edge 100 thus forms a pivot bearing. This pivot bearing 100 thus represents the mounting of the closure means 76.

[0069] When the arm 74 is in its vertically lowered position in the first slotted guide 78, then when the arm 74 lies flat against the struts 86, 88, 90, 92, the closure means 76 also lies flat against the opening 68, so that the passage of liquid through this opening 68 is blocked (cf. Fig. 1 - 4 , 13 ).

[0070] This blocking could be further sealed by arranging a valve seat, in particular in the form of a rubber seal (not shown), at the opening 68, but this is not necessary for proper operation of the separating element 12.

[0071] When the arm 74 is in its vertically lowered position in the first link 78, and the arm simultaneously has a pivoted contact with the strut 86 and with the tabs 98a, 98b, the closure means 76 is arranged horizontally spaced from the opening 68.

[0072] Because the arm 74 extends beyond the first link 78 to the closure means 76, the only slight pivoting of the arm 74 causes a large horizontal spacing of the slide 70 and thus of the closure means 76 of approximately 9 mm, so that the opening 68 is released from the closure means 76 in such a way that an unhindered passage of liquid through the opening 68 can take place (cf. Fig. 14 ).

[0073] The closure means 76 thus forms a check valve that opens in the first direction from the first rinsing liquid receiving area 30 to the second rinsing liquid receiving area 32 and closes in the second direction from the second rinsing liquid receiving area 32 to the first rinsing liquid receiving area 30.

[0074] Parallel to the first guide rail 78 is a second guide rail 102, in which the second slide 72 is guided. This second guide rail, in turn, consists of two oppositely arranged guide surfaces 104, 106, which are connected to one another on the front side 84 of the separating element 12 by the flange 42 with the ribs 86, 88, 90, 92, and on the rear side 94 of the separating element 12 by the bridge 96, and are thus stiffened. Furthermore, there are two tabs 98b, 108 that overlap the second guide rail 102 on the rear side of the separating element 12 on both sides, one of which, 98b, also overlaps the first guide rail 78.

[0075] The second slider 72 also has an arm 110, which is, however, shorter than the arm 74 of the first slider 70. This arm 110 is received in the second link 102 so as to be vertically displaceable and is held there between the guide surfaces 104, 106 and the ribs 86, 88, 90, 92 on one side and the bridge 96 and the tabs 98b, 108 on the other side.

[0076] Although it would also be possible to provide for pivoting of the second slide 72 here, the tabs 98b, 108 are preferably designed in such a way that the arm 110 is guided in the link 102 in a form-fitting manner, up to a tolerance necessary for displacement.

[0077] As with the first slide 70, there is again a strut 112 which is arranged on the outer surface 56 of the chamber 44 and on which a groove 114 of the second slide 72 runs in a form-fitting manner for the vertical guidance of the second slide 72.

[0078] On the front side of the second slider 72, a second closure means 116 is arranged, which is plate-shaped.

[0079] Above the chamber 44, in the area of ​​the second slide 72, there are two vertically spaced rectangular openings 118, 120. These openings 118, 120 each have overflow edges 122, 124 (cf. Fig. 11 ).

[0080] The second closure means 116 is dimensioned such that it is suitable to cover both openings 118, 120 simultaneously and thus to block their overflow edges 122, 124, as shown in the Fig. 11 and 12 is shown.

[0081] The guide in the second slot 102 presses the second closure means 116 against the openings 118, 120 so that no liquid can pass through these openings 118, 120.

[0082] This blocking could be further sealed by arranging a valve seat, in particular in the form of a rubber seal (not shown), at the openings 118, 120, but this is also not necessary for proper operation of the separating element 12.

[0083] The vertical adjustment path of the second slide 72 in the second link 102 is dimensioned such that the second closure means 116 in a lowered first position covers the upper

[0084] Opening 118 and thus the overflow edge 122 is completely released, in a middle second position the upper opening 118 and the lower opening 120 and thus also their overflow edges 122, 124 are completely blocked and in a raised third position the lower opening 120 and thus the overflow edge 124 is completely released.

[0085] Alternatively, the vertical adjustment path of the second slide 72 in the second link 102 could also be dimensioned such that the second closure means 116 in a lowered first position completely releases the lower opening 120 and thus the overflow edge 124, in a middle second position completely blocks the lower opening 120 and thus the overflow edge 124 and in a raised third position completely blocks the upper opening 118 and the lower opening 120 and thus also their overflow edges 122, 124.

[0086] The guide surfaces 80, 82, 104, 106 are partially formed as film elements 126, 128, 130, with the film element 128 being part of the guide surfaces 82, 104. The film elements 126, 128, 130 also have projections 132, 134, 136 (see Fig 11 ). These projections 132, 134, 136 serve as locking means.

[0087] The projections 132, 134 and corresponding notches 138 of the first slide 70 interact in such a way that the two working positions according to Fig. 1 or Fig. 5 each secured by locking. For this purpose, the first slider 70 has opposing recesses 140 with opposing film elements 142 formed thereby between the notches 138, so that the projections 132, 134 are each held in the notches 138 (cf. Fig. 17 ).

[0088] The arm 110 of the second slider 102 also has notches 144 that interact with the projections 134, 136, so that the working positions of the second slider 72 are each secured by locking. For this purpose, the second slider 72 has opposing recesses 146 with opposing film elements 148 formed thereby between the notches 144, so that the projections 134, 136 are each held in the notches 144 (see FIG. Fig. 17 ).

[0089] On the flange 42 of the separating element 12, there is a flexible extension 150, on which a laterally projecting projection 152 is arranged. With the aid of a corresponding locking element (not shown) in the groove 48 of the washing container 14, the separating element 12 can be locked into the washing container 14 and thus secured.

[0090] The chamber 44 with its outer surface 56 surrounds the drain fitting 18 in the manner of a ring segment, so that the chamber 44 extends maximally into the first rinsing liquid receiving area 30, thereby maximizing the volume of the second rinsing liquid receiving area 32. This makes it possible, especially for narrow rinsing containers 14, to achieve an identical fill level for both rinsing liquid receiving areas 30, 32 with a ratio of 4L to 2L while completely absorbing the intended amount of rinsing liquid, thereby ensuring optimal spatial utilization of the rinsing container 14.

[0091] In order not to disturb the outflow of the rinsing liquid from the drain valve 20, the outer surface 56 of the chamber 44 is arranged in this area 154 at a further distance from the central axis M of the drain valve 20, so that the laminar flow is not disturbed in the area of ​​the drain valve 20.

[0092] On the flange 42 of the separating element 12, there is an arrow 156 pointing to the handle 158 of the first slider 70. On the handle 158, which serves for the vertical adjustment of the first slider 70, the designations "4L" and "6L" are indicated vertically one below the other.

[0093] By aligning the designation "4L" with the arrow 156, the first slide 70 is lowered to its maximum position, resulting in the "closed position" of the separating element 12. The first closure means 76 completely blocks the opening 68. In this case, flushing fluid from the second flushing fluid receiving area 32 cannot reach the first flushing fluid receiving area 30 during the flushing process, and thus also cannot reach the drain valve 20. As a result, only a small amount of flushing water of approximately 4L is provided per flushing process. This is the amount of flushing fluid that is in the first flushing fluid receiving area 30 when the flushing container 14 is completely filled.

[0094] When the designation "6L" is aligned with the arrow 156, the first slide 70 is raised to its maximum position, resulting in the "open" working position of the separating element 12. The first closure means 76 completely exposes the opening 68. In this case, flushing fluid from the second flushing fluid receiving area 32 can flow into the first flushing fluid receiving area 30 and thus also into the drain valve 20 during the flushing process. This provides a large flushing water volume of 6L per flushing process. This is the amount of flushing fluid that is located in the first flushing fluid receiving area 30 (4L) and the second flushing fluid receiving area 32 (2L) when the flushing container 14 is completely filled.

[0095] In the lowered closed position, the first closure means 76 strikes the bottom 52 of the rinsing container 14, so that a first stop is thereby formed which prevents further vertical lowering of the first slide 70.

[0096] The arm 74 has a thickening 158 with a stop edge 160 which acts against the bridge 96 in the vertically maximally raised position of the first slide 70, so that a second stop is thereby created which prevents further vertical lifting of the first slide 70.

[0097] On the handle 158 of the first slider 70, there is another arrow 162, which refers to the indication "4L" and provides an adjustment aid for the second slider 72. More specifically, the handle 164 of the second slider 72 has the indications "4.5L," "4.0L," and "4.8L" arranged vertically one below the other.

[0098] In the following, it is assumed that the first slide 70 is in the lowered position, thus the working position "closed position" is set, which provides a flushing liquid quantity of approximately 4L.

[0099] Now, when the indication "4.0L" is aligned with this arrow 162, the second closure means 116 is in a position in which both the opening 118 and the opening 120 are closed. However, this also completely closes the overflow edges 122, 124, and no rinsing fluid can pass from the second rinsing fluid receiving area 32 into the first rinsing fluid receiving area 30, since the openings 68, 118, 120 are completely closed.

[0100] This is also supported by the fact that the float 24 of the filling valve 22 can be adjusted in such a way that the flushing liquid supply is switched off when the level of the flushing liquid contained in the flushing container 14 is below an overflow edge 165 (cf. Fig. 19 ). This overflow edge 165 is the "normal" overflow edge that always exists with such partition walls 12. As a result, no rinsing fluid can pass through openings caused by the tabs 98a, 98b, 108, the film elements 126, 128, 130, and the like. Below the overflow edge 165, the partition element 12 is completely closed, with the exception of the openable openings 68, 118, 120, preventing any crossing fluid passage.

[0101] Now, when the indication "4.5L" is aligned with this arrow 162, the second closure means 116 is in a position where both the upper opening 118 is exposed, but the lower opening 120 is blocked. Thus, the lower overflow edge 124 is completely blocked, but not the upper overflow edge 122, which is completely exposed.

[0102] When the rinsing tank 14 is completely full, the level of the rinsing liquid filled into the rinsing tank 14 is above the two openings 118, 120, but - as mentioned - below the tabs 98a, 98b, 108.

[0103] As a result, the rinsing liquid that is located in the second rinsing liquid receiving area 32 between the original level of the fully filled rinsing container 14 and the upper overflow edge 122 can flow through the opening 118 into the first rinsing liquid receiving area 30 and thus contribute to the rinsing.

[0104] The distance between the original water level and the upper overflow edge 122 is dimensioned such that a liquid volume of 0.5L results. The total flushing liquid volume in this case is thus 4.5L. It consists of the flushing liquid volume from the first flushing liquid receiving area 30 and the 0.5L flowing out of the second flushing liquid receiving area 32.

[0105] Finally, when the indication "4.8L" is aligned with this arrow 162, the second closure means 116 is in a position where both the upper opening 118 is closed, but the lower opening 120 is open. Thus, the upper overflow edge 122 is completely closed, but not the lower overflow edge 124, which is completely open.

[0106] As a result, the rinsing fluid located in the second rinsing fluid receiving area 32 between the original level of the fully filled rinsing container 14 and the lower overflow edge 124 can flow through the opening 120 into the first rinsing fluid receiving area 30 and thus contribute to the rinsing process. The blocking of the upper opening 118 does not interfere with this flow.

[0107] The distance between the original water level and the lower overflow edge 124 is dimensioned such that a liquid volume of 0.8L results. The total flushing liquid volume in this case is thus 4.8L. It consists of the flushing liquid volume from the first flushing liquid receiving area 30 and the 0.8L flowing out from the second flushing liquid receiving area 32.

[0108] With respect to the second slider 72, there is a lower stop 170a, 170b and an upper stop 172a, 172b for the 4.5 L and 4.8 L positions, respectively (cf. Fig. 20 , which shows a section through the center of the second slider 72). For the middle 4.0 L position, however, there is no stop; instead, positioning is achieved via a locking point. Fig. 20 shows the middle position of the second slide 72 at the 4.0 L position. Thus, the desired flush volume can be set precisely, reproducibly, and easily using the combination of the stop or locking point and the indicators (arrow and setpoint) at the upper end of the slide.

[0109] When the first slide 70 is in the "open position," i.e., the first closure means 76 completely exposes the opening 68, the added rinsing fluid can simultaneously flow into both the first rinsing fluid receiving area 30 and the second rinsing fluid receiving area 32 during the filling of the rinsing container 14 via the filling valve 22. As a result, the water level in both rinsing fluid receiving areas 30, 32 will rise identically to the maximum level, whereby the float 24 directly regulates both water levels in both rinsing fluid receiving areas 30, 32.

[0110] If, however, the first slide 70 is in the "closed position", i.e. the first closure means 76 completely blocks the opening 68, the added rinsing liquid can also reach both the first rinsing liquid receiving area 30 and the second rinsing liquid receiving area 32 simultaneously during the filling of the rinsing container 14 by means of the filling valve 22.

[0111] This is because the rinsing fluid flowing from the filling valve 22 into the first rinsing fluid receiving area 30 builds up a dynamic pressure on the first closure means 76 that is greater than the hydrostatic pressure acting on the first closure means 76 in the second rinsing fluid receiving area 32. Since the second rinsing fluid receiving area 32 is not subjected to an equally high hydrostatic pressure, but rather only to the lower air pressure, a resulting horizontal force from the first rinsing fluid receiving area 30 acts against the first closure means 76, causing the first closure means 76 to pivot relative to the rotation axis 100 into the second rinsing fluid receiving area 32 until the arm of the first slide 70 strikes the tabs 98a, 98b (cf. Fig. 14 and 15). This allows rinsing fluid to flow through the opening 68 into the second rinsing fluid receiving area 32 and, in turn, simultaneously fill the second rinsing fluid receiving area 30.

[0112] In this case too, the water level in both flushing liquid intake areas 30, 32 will increase identically to the maximum water level, whereby the float 24 directly regulates both water levels in both flushing liquid intake areas 30, 32.

[0113] As soon as the maximum water level is reached, the first slide 70 will swing back due to gravity, whereby the first closure means 76 rests against the opening 76 and the separating element 12 is in the "closed position".

[0114] If this pivoting does not take place completely, it will take place at the latest during the rinsing process, because then the rinsing liquid flowing out of the first rinsing liquid receiving area 30 cannot build up sufficient counterpressure against the hydrostatic pressure of the rinsing liquid located in the second rinsing liquid receiving area 32 and thus a resulting horizontal force from the second rinsing liquid receiving area 32 acts against the first closure means 76, whereby a moment is generated on the closure means 76 relative to the axis of rotation 100 in the direction of the first rinsing liquid receiving area 30 and the first closure means 76 is brought into contact with the opening 68 (cf. Fig. 13 ).

[0115] Because both rinsing liquid receiving areas 30, 32 are filled simultaneously in both working positions of the separating element 12, filling is not associated with additional noise generation or functional influences on the filling valve compared to rinsing containers without a separating element.

[0116] In the illustrated embodiment of the invention, the separating element 12 has a first slide 70 which can be pivoted relative to a pivot bearing 100 in order to release the opening 68 when a hydrostatic pressure is applied in the direction of the second rinsing liquid receiving area 32, so that rinsing liquid can flow from the first rinsing liquid receiving area 30 into the second rinsing liquid receiving area 32.

[0117] However, other designs are also conceivable, which are also claimed.

[0118] For example, the arm 74 itself could also be provided with a hinge, in particular a film hinge. Then, the entire first slide 70 would not have to pivot, but only the part of the arm 74 with the first closure means 76 arranged thereon would pivot.

[0119] Such a hinge could also be arranged at the interface between arm 74 and first closure means 76.

[0120] In addition, the arm 74 and / or the first closure means 76 could also have, at least in some areas, such elasticity that the first closure means 76 is at least partially lifted from the opening 68 in the direction of the second rinsing liquid receiving area 32 when a hydrostatic pressure is applied and is pressed onto the opening 68 in the direction of the first rinsing liquid receiving area 30 when this hydrostatic pressure is not applied or when a hydrostatic pressure is applied.

[0121] Furthermore, such a hinge could also be vertically aligned on the arm 74. For this purpose, for example, the first closure means 76 could be arranged on the arm 74 not in a hammerhead-like manner, but rather in an "L" shape. Instead of the hinge, the arm 74 or the first closure means 76 could also be designed to be correspondingly elastic, at least in some areas.

[0122] In addition, in the hammerhead-like design of the first slider 70, the two wings 166, 168 of the first closure means 76 projecting to the left and right could also be arranged on the arm 74 with a vertically extending hinge, or the wings 166, 168 could again have a corresponding elasticity.

[0123] From the above description, it has become clear that the present invention achieves significant improvements over DE 20 2021 103 577 U1. For example, the separating element does not generate any additional noise when filling the flushing container, and the filling valve closes evenly and reliably. Furthermore, the flush volume can be adjusted very precisely, and particularly in the closed position of the separating element 12, it can be tailored particularly precisely to the exact requirements of the sanitary fixture to be flushed. Furthermore, the separating element 12 is structurally very simple in terms of its range of functions and can be manufactured cost-effectively. Furthermore, the installation space limitations of DE 20 2021 103 577 U1 no longer apply, allowing for more flexible dimensioning.

[0124] The claims filed now with the application and also those filed later are without prejudice to the attainment of further protection.

[0125] Should a closer examination, particularly of the relevant prior art, reveal that one or another feature is beneficial to the purpose of the invention but not crucially important, then, of course, a formulation is already being sought that no longer contains such a feature, particularly in the main claim. Such a subcombination is therefore also covered by the disclosure of this application.

[0126] The references cited in the dependent claims indicate the further development of the subject matter of the main claim through the features of the respective subclaim. However, these are not to be understood as a waiver of independent, objective protection for the features of the referenced subclaims.

[0127] It should also be noted that the embodiments and variants of the invention described in the various embodiments and shown in the figures can be combined with one another as desired. Individual or multiple features are interchangeable. These feature combinations are also disclosed.

[0128] Features that were only disclosed in the description or individual features from claims that comprise a plurality of features can at any time be incorporated into the independent claim(s) as being of essential importance to the invention in order to distinguish them from the prior art, even if such features were mentioned in conjunction with other features or achieve particularly favorable results in conjunction with other features. Thus, all features presented in the general description of the invention, the description of the exemplary embodiments, the following claims and the figures can be essential to the invention both individually and in any combination with one another. These features or combinations of features can each constitute an independent invention, the right to claim which is expressly reserved.Individual features from the description of an embodiment do not necessarily have to be combined with one or more or all other features specified in the description of this embodiment; in this respect, each sub-combination is expressly disclosed. Furthermore, physical features of a device can be reformulated and used as method features, and method features can be reformulated and used as physical features of a device. Such a reformulation is therefore automatically disclosed. Bezugszeichenliste

[0129] 10 Flushing unit according to the invention 12 Separating element according to the invention 14 Flushing container 16 Support plate 18 Drain fitting 20 Drain valve 22 Filling valve 24 Float unit 26 Flushing bend 28 Interior of the flushing container 14 30 First flushing liquid receiving area 32 Second flushing liquid receiving area 34 Float 36 Flushing liquid connection 38 Receptacle for the flushing liquid connection 36 on the separating element 12 40 Recess of the flushing container 14 42 Flange 44 Chamber 46 Tongue 48 Groove 50 Side wall of the flushing container 14 52 Bottom of the flushing container 14 54 Side wall of the flushing container 14 56 Shell surface of the chamber 44 57 Lower area of ​​the flange 42 58 Upper area of ​​the flange 42 60Stiffening rib 62Central recess of the chamber 44 64, 66Chamber sections 68Opening in the flange 42 70First slide 72Second slide 74Arm 76First closure means, check valve 78First gate, guide of the arm 74 80, 82Guide surfaces 84Front of the separating element 12 86, 88, 90,92 Ribs 94 Rear of the separating element 12 96 Bridge 98a, 98b Tabs 99 Groove 100 Upper edge of the strut 86, bearing of the closure means 76 102 Second link 104, 106 Guide surfaces 108 Tab 110 Arm 112 Strut 114 Groove 116 Second closure means 118, 120 Openings 122, 124 Overflow edges 126, 128, 130 Film elements 132, 134, 136 Projections, locking means 138 Notches, locking means 140 Recesses 142 Film elements 144 Notches, locking means 146 Recesses 148 Film elements 150 Extension arm 152 Projection 154 Area of ​​the lateral surface 56 of the chamber 44, which partially surrounds the drain valve 20 156Indicating arrow 158Handle of the first slide 70 159Thickening 160Stop edge 162Arrow 164Handle of the second slide 72 165Overflow edge 166, 168Wing of the first closure means 76 on the arm 74 170a, 170bLower stop 172a, 172boUpper stop HHorizontal LLongitudinal extension of the separating element 12 MCenter axis of the drain valve 20 VVertical,

Claims

1. A separating element (12) for a flushing container (14) of a sanitary fitting, which is adapted to separate at least two flushing liquid receiving areas (30, 32) of the flushing container (14) from one another in a closed position of the separating element (12) and to connect them to one another in an open position of the separating element (12), characterized in that the separating element (12) has at least one closure means (76) which is designed to change its position in the closed position under the action of a hydrostatic pressure in a first direction so that the closed position is opened, and under the action of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element (12) is maintained, or ii) changes its position so that the separating element (12) is transferred into the closed position.

2. Separating element (12) according to claim 1, characterized in that thata recess or an opening (68) is provided on the separating element (12) which is closed by the closure means (76) in the closed position, wherein a sealing means is preferably arranged between the recess or opening (68) and the closure means (76), wherein at least one recess or opening (68) is arranged in a bottom region of the separating element (12), and / or that the separating element (12) has a longitudinal extension (L) which is oriented vertically.

3. Separating element (12) according to one of claims 1 or 2, that the closure means (76) is movably arranged on the separating element (12), wherein the closure means (76) is preferably arranged rotatably about a bearing (100) arranged on the separating element (12), wherein the bearing (100) runs in particular horizontally or vertically, and / or that the closure means (76) is flexible and / or thatthe closure means (76) rests only on one side of the recess or opening (68) in the closed position and is lifted off the recess or opening (68) in the non-closed position and / or that the closure means (76) is designed to be horizontally displaceable and / or that the closure means (76) is designed to be vertically displaceable and / or that at least one locking means (132, 134, 136, 138) is provided to secure a working position, preferably to secure the open position.

4. Separating element (12) according to claim 3, that the closure means (76) is arranged on an arm (74) which preferably runs in a guide (78) of the separating element (12), wherein the guide (78) in particular has a play for the arm (74) which widens in the direction of the closure means (76) so that pivotability of the arm (74) is provided.

5. Separating element (12) according to one of the preceding claims, thatthe separating element (12) has at least one lockable overflow edge (122, 124) which, in the unlocked state, allows the overflow of rinsing liquid from one of the two rinsing liquid receiving areas (30, 32) into the other of the two rinsing liquid receiving areas (32, 30), wherein preferably there are at least two lockable overflow edges (122, 124) and the first lockable overflow edge (122) is arranged vertically higher than the second lockable overflow edge (124).

6. Separating element (12) according to claim 5, thatthe first lockable overflow edge (122) is located at a recess or opening (118) and / or the second lockable overflow edge (124) is located at a recess or opening (120) of the separating element (12), wherein there is preferably an opening (120) at which the second lockable overflow edge (124) is arranged, wherein this opening (120) is arranged vertically below a recess or opening (118) at which the first lockable overflow edge (122) is arranged.

7. Separating element (12) according to one of claims 5 or 6, ​the separating element (12) has at least one closure means (116) which is located in the region of the first overflow edge (122) and / or second overflow edge (124), wherein the closure means (116) for the first lockable overflow edge (122) and the closure means (116) for the second lockable overflow edge (124) are preferably designed as a uniform closure means (116), wherein the uniform closure means is designed in particular as a vertical slide (116) which selectively blocks the first lockable overflow edge (122) and releases the second lockable overflow edge (124), releases the first lockable overflow edge (122) and blocks the second lockable overflow edge (124) or blocks both the first lockable overflow edge (122) and the second lockable overflow edge (124) or which selectively blocks both the first lockable overflow edge and the releases the second lockable overflow edge,releases the first lockable overflow edge and locks the second lockable overflow edge or locks both the first lockable overflow edge and the second lockable overflow edge., 8. Separating element (12) according to claim 7, ​ two different closure means (76, 116), wherein a first closure means (76) is located at the bottom region of the separating element (12) and a second closure means (116) is located in the region of the overflow edge (122, 124).

9. Separating element (12) according to one of the preceding claims, ​ at least one recess or opening (68, 118, 120) has a passage area for the liquid of at most 3,000 mm 2 , preferably not more than 2,000 mm 2 , in particular of a maximum of 1,000 mm 2 and / or ​the distance of the closure means (76) from the at least one recess or opening (68) in the non-closed position is in the range 1 mm to 15 mm, preferably in the range 3 mm to 12 mm, in particular in the range 6 mm to 9 mm.

10. Separating element (12) according to one of the preceding claims, ​ a chamber (44) projecting laterally relative to the vertical, which preferably extends laterally offset relative to the closure means (76, 116), and / or ​ the separating element (12) is box-shaped.

11. Flushing unit (10) for a sanitary fixture, comprising a flushing container (14), a filling valve (22) with a flushing liquid inlet (36), a flushing liquid outlet, a drain valve (20) connected to the flushing liquid outlet, and a separating element (12), wherein the separating element (12) is adapted to separate at least two flushing liquid receiving areas (30, 32) of the flushing container (14) from one another in a closed position of the separating element (12) and to connect them to one another in an open position of the separating element (12), ​the separating element (12) has at least one closure means (76) which is designed to change its position in the closed position under the action of a hydrostatic pressure in a first direction so that the closed position is opened, and under the action of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element (12) is maintained, or ii) changes its position so that the separating element (12) is transferred into the closed position.

12. Flushing unit (10) according to claim 11, ​ ​ the separating element (12) is designed according to one of claims 2 to 9 and / or ​ ​the filling valve (22) corresponds to a first rinsing liquid receiving area (30), wherein a second rinsing liquid receiving area (32) exists, wherein the separating element (12) is arranged between the first rinsing liquid receiving area (30) and the second rinsing liquid receiving area (32), wherein the second direction is a direction from the second rinsing liquid receiving area (32) to the first rinsing liquid receiving area (30), and / or ​ the separating element (12) is designed according to claim 10, wherein preferably at least one region of the chamber (44) or the box extends at least partially around a region of the drain valve (20), and / or ​the separating element (12) has a bottom region (57) and two opposite side regions, which together form a circumferential region of the circumference (42) of the separating element (12), wherein the rinsing container (14) has a receptacle (48) for the separating element (12), in which the circumferential region of the circumference (42) is received, wherein the receptacle is preferably designed as a groove (48), wherein the separating element (12) is arranged in particular in a fitting, preferably fluid-tight manner in the receptacle (48), and / or ​ the filling valve (22) and the drain valve (20) are arranged in the same rinsing liquid intake area (30).

13. Flushing unit (10) according to claim 12, ​the drain valve (20) has a valve cage (21), wherein the chamber (44) or the box maintains a radial distance around the valve cage (21) of at least 3 mm, preferably at least 5 mm, in particular at least 6 mm, with respect to the horizontal (H) and a central axis (M) of the drain valve (20).

14. Sanitary fitting with a flushing unit (10) comprising a flushing container (14), a filling valve (22) with a flushing liquid inlet (36), a flushing liquid outlet, a drain valve (20) connected to the flushing liquid outlet, and a separating element (12), wherein the separating element (12) is adapted to separate at least two flushing liquid receiving areas (30, 32) of the flushing container (14) from one another in a closed position of the separating element (12) and to connect them to one another in an open position of the separating element (12), ​ ​the separating element (12) has at least one closure means (76) which is designed to change its position in the closed position under the action of a hydrostatic pressure in a first direction so that the closed position is opened, and under the action of a hydrostatic pressure in a second direction opposite to the first direction i) does not change its position so that the closed position of the separating element (12) is maintained, or ii) changes its position so that the separating element (12) is transferred into the closed position.

15. Sanitary fitting according to claim 14, ​ ​ the separating element (12) is designed according to one of claims 2 to 10 and / or ​ the rinsing unit (10) is designed according to claim 12 or 13, and / or ​ the sanitary fixture is a toilet, a urinal, a bidet or a shower toilet.​

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