ES2856214T3 - Drain adapter - Google Patents

Abstract

Drain adapter (1) for a cistern, comprising a valve body (2) with a sealing element (4) that collaborates with a valve seat (3) and with a float (5), where the valve body valve (2) is movable with a sealing element (4) from the valve seat (3) along a median axis (M) from a rest position to a washing position and from the washing position to the rest position, and a float chamber (6) with a hole (28) through which the valve body (2) extends, where the float (5) is movable within the float chamber (6 ) along the central axis (M) and collaborates hydraulically with the float chamber (6), wherein the float chamber (6) comprises at least one control passage (7), through which, as soon as a level of the wash water (S) surrounding the drain adapter (1) has dropped to the level of the control passage (7), air can enter from areas (9) outside the f lotator (6) to the float chamber (6), in such a way that the pressure relationships between the float chamber (6) and the zones (8) outside the float chamber (6) can be compensated, in where the float (5) is mobile during the compensation of the pressure relationships from the washing position to the rest position, where the float chamber (6) has a base section (9) that extends entirely around of the mid-axis (M) and a section of the breathing tube (10) that connects in the base section (9), where the cross-section of the section of the breathing tube (10), seen transversely to the mid-axis ( M), is smaller than the cross section of the base section (9), where the float has a lower section (29), from which a column section (11) extends, where the float (5) extends with the column section (11) into the breathing tube section (10) and where the valve body (2) further comprises an overflow tube (33), wherein the float (5) extends with the column section (11) and the lower section (29) on the outer side around the overflow tube (33 ), in particular in such a way that the overflow tube (33) extends in the center through the float (5), so that the column section (11) and the lower section (29) present the cross section of a cylindrical ring, and wherein the float (5) is preferably integrally formed in the overflow tube (33).

Description

DESCRIPTION

Drain adapter

TECHNICAL FIELD

The present invention relates to a drain adapter according to the preamble of claim 1 STATE OF THE ART

From the state of the art, for example from documents EP0522218A1, FR2576620A1 and FR2658219A1 drain adapters for activating washings from a cistern. In particular, drain adapters are known for the selective activation of a full flush wash or a partial flush wash. For example, document EP 0722020 describes such a washing installation. For the partial discharge flushing a weight body is arranged, which can optionally be connected to the valve body

Another drain adapter is known from DE 102007 001 718, which has an extension section that connects to the float chamber. This drain adapter is unfavorable because by virtue of the hydrostatic and hydrodynamic relationships, the valve body reaches a high speed during movement from the flushing position to the closed position, which leads to very loud noises when the closing body hits the valve seat.

REPRESENTATION OF THE INVENTION

Starting from this state of the art, an object of the invention is to indicate a drain adapter, which solves the drawbacks of the state of the art, in particular to indicate a drain adapter, which closes more silently.

This task is solved by the object according to claim 1. Accordingly, a drain adapter comprises for a cistern a valve body with a sealing element cooperating with a valve seat and with a float, wherein the body valve is movable with a sealing element from the valve seat along a median axis from a rest position to a flushing position and from the flushing position to the rest position, and a float chamber with a orifice through which the valve body extends and is movably housed there, where the float is movable within the float chamber along the central axis and cooperates hydraulically with the float chamber. The float chamber comprises at least one control passage, through which, as soon as a level of the wash water surrounding the drain adapter has dropped to the height of the control passage, air can enter from areas outside the float chamber to the float chamber, so that the pressure relationships between the float chamber and the areas outside the float chamber can be compensated, where the float is mobile during compensation of the ratios of the float. pressure from wash position to rest position.

The float chamber has a base section that extends entirely around the mid-axis and a breather tube section that connects to the base section. The cross section of the breathing tube section, viewed transversely to the mid-axis, is smaller than the cross section of the base section. The float extends with a column section inside the breathing tube section. Furthermore, the control step for activating a first wash is configured with a first wash amount. Furthermore, the drain adapter comprises a control unit for controlling a second amount of washing. The control unit conditions, when a water level provided for the second amount of washing with a closing weight is reached, a closing force on the valve body, wherein the closing force is switchable through a member switching from the control unit on the valve body. The float chamber has a base section that extends entirely around the mid-axis and a breather tube section that connects to the base section. The cross section of the breathing tube section, viewed transversely to the mid-axis, is smaller than the cross section of the base section. The float has a lower section, from which a column section extends, wherein the float extends with the column section inside the breathing tube section. The lower section extends and moves essentially within the base section. The valve body further comprises an overflow pipe, wherein the float extends with the column section and with the lower section on the outer side around the overflow pipe, in particular in such a way that the overflow pipe is it extends centrally through the float, so that the column section and the lower section present the cross section of a cylindrical ring, and wherein the float is preferably integrally formed in the overflow tube.

Through the extension of the float inside the breathing tube section the advantage is that with The increased volume of the float can reduce the portion of water, which presses in the float chamber on the float, thereby reducing noise formation during the closing process.

Furthermore, by providing the breather tube section with a smaller cross section than the base section, the volume of the float chamber can be increased, without adversely affecting the construction size of the drain adapter or its function. This has the advantage that due to the high volume a simplified optimization of the closing process is possible.

Beneath the column section, the float has, as mentioned, a lower section, wherein the lower section is essentially cylindrical in shape, in particular in the shape of a circular cylinder and preferably fills the washing position in the washing position. bottom section of the float chamber or essentially fills it. The column section is preferably designed as a float. In a particularly preferred manner, the column section, like the lower section, is designed essentially as a hollow space filled with air. By "extending inside" is meant that the column section extends inside the breathing tube section both in the flushing position and also in the rest position.

By the term "breathing tube section" is meant a section that complements the base section in the upward mounting position.

Preferably, the float or the hollow space is designed closed upwards. This means that air cannot be escaped upward from the float. In this case, in a particularly preferred manner, the lower section and the column section are designed closed upwards. This means that the lower section and also the column section are configured without a hole, through which air can escape upwards. Therefore, it is a float, which is totally closed on the upper side. This gives the advantage that the float always experiences lift when it is surrounded by water. An active activation of the float with respect to the float functionality is also suppressed.

In other words, the float has a hollow space closed upwards. The hollow space closed upwards is formed by the column section and the bottom section. Preferably, the hollow space of the float, distorted from below, is delimited by a surrounding side wall, extending around the lower section, with a transition wall extending transverse or inclined at an angle with respect to it, delimiting the lower section upwards, with a surrounding side wall, which connects to the transition wall upwards and laterally delimits the column section and with a front wall, which closes the column section upwards. The front wall extends transversely or inclined at an angle to the surrounding side wall. "upward" refers in this context, seen in the mounting position, to an upward direction, as seen from the valve seat, ie away from the valve seat.

In a preferred variant, the lower section is configured open downwards. When the tank is being filled, the air remains by virtue of the closed-up configuration of the lower section and of the column section in the lower section as well as in the column section. Through the air the lift force is prepared. In a particularly preferred manner, the lower section is open at all times downwards and is essentially delimited by said side wall of the lower section. That is, there is no hole, which must be activated in some way to prepare the function of the float.

In a second variant, the lower section can also be designed as closed.

As already mentioned, the valve body further comprises an overflow tube, wherein the float extends with the column section and the lower section on the outer side around the overflow tube, in particular in such a way that the overflow tube extends in the center through the float, so that the column section and the bottom section respectively have the cross section of a cylindrical ring. The float is preferably formed through said front wall, which delimits the column section upwards, integrally in the overflow tube.

Especially preferably the overflow tube projects upward into the column section and projects downwardly from the lower section. In addition, the seal can be attached to the overflow pipe.

Preferably, the float with the column section and the lower section have no moving parts, which should be activated for the float function.

Preferably, the breather tube section of the float chamber extends essentially concentric with respect to the base section. The breathing tube section and the base section are overlapped with preference concentrically. The expansion of the section of the overflow pipe, seen transversely to the median axis, is in this case less than the expansion of the base section.

By "concentrically" it is meant in the present context that the vent tube section and the base section extend about a common median axis. In this case, the two sections are designed to be circumferential around the median axis.

Preferably, the column section of the float extends essentially concentric with respect to the lower section. The column section and the lower section preferably overlap concentrically. The expansion of the column section, seen transversely to the median axis, is preferably less than the expansion of the lower section.

By "concentrically" it is meant in the present context that the column section and the lower section extend around a common median axis. The two sections are in this case circumferentially configured around the median axis.

The outer shape of the float with the lower section and the column section and the inner shape of the float chamber with the base section and the section of the vent tube are configured such that the float is movable in the float chamber. . The two shapes are designed in such a way that they essentially fit one another, if necessary they fit one another with play.

The breathing tube section, viewed in the direction of the mid-axis, is within the maximum diameter of the base section. The diameter of the breathing tube section is therefore smaller than that of the base section. The same can be said for the diameter ratio between the bottom section and the column section.

Preferably, the breather tube section and the base section extend entirely around the median axis and preferably have essentially constant diameters in each case. The breathing tube section and the base section are therefore essentially cylinder-shaped, in particular with a circular base surface.The diameter of the breathing tube section is in this case smaller than that of the base section.

Preferably, the column section and the lower section extend entirely around the median axis and preferably have essentially constant diameters in each case. The column section and the lower section are therefore essentially cylinder-shaped, in particular with a circular base surface. The diameter of the column section is in this case smaller than that of the lower section.

Preferably, the transition between the vent tube section and the base section is conically shaped. Through this transition the reduction of the diameter from the base section over the section of the ventilation tube is achieved.

Preferably, the height of the base section, viewed in the direction of the median axis, is essentially less than the height of the breathing tube section, where the height of the base section is preferably between 5% and 20%. % of the height of the entire float chamber. In this way, a compact configuration of the drain adapter can be achieved.

Preferably, the height of the lower section, viewed in the direction of the median axis, is essentially less than the height of the column section, where the height of the lower section is preferably between 5% and 20% of the height. of the entire float. The height of the entire float is made up of the height of the lower section and the height of the column section.

Preferably, the float chamber, ie the vent tube section and the base section, apart from the at least one control transition, is configured fully closed to a front wall laterally with a side wall. The float chamber is configured open downwards. In the front wall, the bearing bore is preferably present, in which the valve body is movably mounted.

Preferably, a water collector is present above the float chamber, which opens with a passage into the float chamber, wherein through the passage water, which is located in the water collector, can flow into the chamber. float. The water collector is filled during the filling of the cistern and is configured in such a way that it can only be emptied during the emptying of the cistern through the passage. The water collector can also be designated as a reservoir.

Preferably, the lower section of the float in the flushing position is arranged essentially entirely in the float chamber. That is, the lower section moves during the activation of the wash essentially all the way inside the float chamber.

In a particularly preferred manner, the sealing element of the valve body is in the flushing position essentially completely in the float chamber. In this way, the sealing element is protected from the water circulating in front of it.

Preferably, the column section, viewed in cross section to the mid-axis, fills the cross section of the breather tube section essentially completely or at least 55%, in particular at least 75%. That is, the column section extends, viewed in cross section to the mid-axis, essentially all or almost entirely over a large part of the cross section of the breathing tube section.

Preferably, the column section fills the volume of the breathing tube section with essentially all or at least 55% or at least 90% when the float is in the flushing position. In this context, "essentially entirely" means that the column section and the breathing tube section are arranged relative to each other in such a way that a residual amount of water is always present between the column section and the breathing section. Said configurations have the advantage that the portion the advantage that the portion of water, which presses on the float, when the float moves from the washing position to the rest position, can be kept small.

Particularly preferably, clearance is present between the outer sides of the column section and the inner sides of the breathing tube section.

Preferably, the control step for activating a first wash is configured with a first wash amount. Furthermore, the drain adapter comprises a control unit for controlling a second amount of washing. The control unit, when a water level is reached, provided for the second amount of washing, conditions with a closing weight a closing force on the valve body, wherein the closing force can be switched via a member switching from the control unit on the valve body.

Preferably, the switch member automatically establishes a holding connection with the valve body during lifting of the control unit.

Preferably, the height position of the closing weight is configured adjustable over an adjustment zone. In other words, the closing weight can be moved over the adjustment zone. In the case of a higher position, less water is removed during the washing process than in the case of a lower position.

Preferably, the first wash is a full discharge wash and the second wash is a partial discharge wash. That is to say, in the case of an activation of the closing weight, a partial discharge wash is activated and when the control step is reached through the resistance s it activates a full discharge wash.

Alternatively, the first wash is a partial discharge wash and the second wash is a full discharge wash. That is, in the case of an activation of the closing weight a full flush wash is activated and in the event that the control passage through the water level is reached, a partial flush wash is activated. Preferably, several control passages are arranged on different height positions, wherein the drain adapter further comprises at least one closing element, with which one of the control passages can be released and the others closed. control steps.

The closure element is preferably a slide which is movably housed on the outer side of the drain adapter.

Preferably, at least one of the control passages is arranged in the breathing tube section, where, if present, the other control passages are arranged in the breathing tube section and / or in the base section. .

Preferably, the closure weight adjustment zone extends in height at least to below the highest control weight. In this way an overlap of the heights between the control unit and the control passage can be achieved, which increases the flexibility of the adjustment of the water intake.

Preferably, the control unit is arranged outside the breathing tube section and is movable up and down alongside the breathing tube section.

Preferably, the breathing tube section comprises a hole for ventilation during filling of the float chamber.

Other embodiments are indicated in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The preferred embodiments of the invention are described below with the aid of the drawings, which serve for explanation only and should not be construed as limitation. In the drawings:

Figures 1a / 1b show a perspective view of an embodiment of a drain adapter according to the invention.

Figure 2 shows a sectional representation through the drain adapter according to figure 1 in rest position.

Figure 3 shows another sectional representation through the drain adapter according to Figure 1 in the washing position.

Figure 4 shows a schematic representation of the drain adapter according to the invention in rest position.

Figure 5 shows a schematic representation of the drain adapter according to the invention during a full flush wash; and

Figure 6 shows a schematic representation of the drain adapter according to the invention during a partial flush wash.

DESCRIPTION OF PREFERRED EMBODIMENTS

The figures show a drain adapter 1 for a cistern. The drain adapter 1 comprises a valve body 2 with a sealing element 4, cooperating with a valve seat, and a float 5-. The valve body 2 is movable with the sealing element 4 from the valve seat 3 along a median axis M from a rest position to a flushing position and from the flushing position to the rest position. In the flushing position, water can be discharged through the gap between the valve seat 3 and the sealing element 4.

Furthermore, the drain adapter 1 comprises a float chamber 6. The float chamber 6 has a hole 28, through which the valve body 2 extends. The valve body 2 is movably housed in the hole 28. float 5 is in this case movable essentially within float chamber 6 along median axis M and cooperates hydraulically with float chamber 6.

The float chamber 6 is configured, apart from the at least one control passage 7, totally closed laterally up to a front wall 19 with a side wall 34. The control passages 7 in this case pass through the side wall 34. The side wall 34 it delimits the base section 9 and the breathing tube section 10 outwardly. The opening 28 is in the front wall 19. The float chamber 6 is open downwards.

The float chamber 6 comprises at least one control passage 7, through which air can enter, as soon as a level of the wash water S surrounding the drain adapter 1 has dropped to the level of the control passage 7, from zones 8 outside the float chamber 6 to the float chamber 6, in such a way that the pressure relationships between the float chamber 6 and zones outside the float chamber 6 can be compensated. During this compensation, the float or valve body 2 can be moved from the wash position to the rest position.

The float 5 extends with a column section 11 into the breathing tube section 10. In this way, the relevant volumes for raising and lowering are optimally utilized and the movement of the valve body 2 can be optimized. Below the column section 11, the float preferably has a lower section 29, which is movable up and down in the base section 9. The float 5 is configured fully closed upwards. That is, air can circulate over the lower section 29 inside the float, but cannot escape upward.

The internal shape of the float chamber 6 is explained more precisely with the aid of Figures 2 and 3. The float chamber 6 comprises a cylindrical base section, especially a circular cylindrical one, which extends entirely around the median axis. M and a section of the breathing tube that is connected to the base section 9. The section of the breathing tube 10 is in this case connected to the base section 9. In the mounting position, the base section 9 is arranged below the section of the breathing tube 10 and the section of the breathing tube 10 is arranged above the base section 9. It can also be said that the section of the breathing tube 1o extends the float chamber 6 from the section of base 9 up. Upwards the section of the breathing tube 10 is limited through the front wall 19.

The cross section of the section of the breathing tube 10, seen transversely to the median axis M, is in this case smaller than the section of the base section 9. The volume of the section of the breathing tube 10 is preferably greater than the of the base section 9.

The section of the breathing tube 10 extends essentially concentric to the base section 9. That is to say that the two cylinders or circular cylinders extend around the common middle element M. The section of the breathing tube 10 has H10 over its entire height. a constant diameter. In the same way, the base section 9 also has the same diameter over its entire height H9. The diameter is in this context the inside diameter. The inside diameter of the base section 9 is in this case greater than the inside diameter of the breathing tube section 10.

In the embodiment shown, the passage 30 is conical between the base section 9 and the section of the breathing tube 10. That is, in the region of the passage 30 the diameter of the float chamber is reduced from the larger diameter. from the base zone 9 to the diameter minus of the section of the breathing tube 10.

The outer shape of the float 5 is explained more precisely with the aid of Figures 2 and 3. The outer shape of the float 5 is configured closely or essentially similar to the inner shape of the float chamber 6. That is, the shape inner is the same or similar to the outer shape. As mentioned here, it is advantageous if there is play between the inner shape and the outer shape.

The lower section 29 of the float 5 has a cylindrical outer shape, in particular circular cylindrical. The column section 11 of the float 5 has a cylindrical outer shape, in particular circular cylindrical. The outer diameter of the cylindrical outer shape in the region of the column section 11 and in the region of the lower section 29 is preferably constant.

In the center an overflow tube 33 extends through the float 5. That is to say that the column section 11 and also the lower section 29 have on the inner side a cross section of a cylindrical ring.

The passage from the lower section 29 to the column section 11 is here configured as a diameter jump. As shown in the figures, an upwardly closed passage wall is arranged in the region of the diameter jump. The passage wall bears the reference sign 35.

The column section 11 extends essentially concentric to the lower section 29. In other words, the two cylinders or circular cylinders extend around the common middle axis M. The column section 11 is closed in the area of its upper end 18 with a front wall 36. The front wall 36 in this case extends from the side wall 38 of the column section 11 to the side wall of the overflow tube 33.

The front wall 36 is closed upwards in this case, that is to say it is designed without opening. The column section 11 and the lower section 29 have a constant diameter, the diameter of the column section 11 being smaller than the diameter of the lower section 29. The diameter is in this context the outer diameter.

The outer diameter of the lower section 29 preferably corresponds essentially to the outer diameter of the sealing element 4.

Both the lower section 29 and also the column section 11 are configured in the embodiments shown, respectively, as a hollow space, so that it experiences a lift in the water. The hollow space is configured in this case closed upwards, so that no air can escape upwards from the float 5 or from the lower section 29 and the column section 11. The hollow space prepared through the two sections can be full of air in this case. The hollow space is configured in the embodiments shown closed at the top and open at the bottom. It can also be designed as a closed hollow space.

In the embodiments shown, the hollow space of the float 5 is delimited, viewed from below, with a surrounding side wall 37, extending around the lower section 29, with a passage wall 35 extending transverse to it, which delimits the lower section 29 upwards, with a surrounding side wall 38, which connects in the passage section 35 upwards and laterally delimits the column section 11 upwards. Downwards, that is to say in the region of the lower section 29, the float 5 is configured open.

From the sectional representations of Figures 2 and 3 it is shown that the column section 11, seen in cross section to the mid-axis M, essentially fills the cross section of the breathing tube section 10. The degree of packing it is preferably at least 70%, when the column section 11 is with the float 5 in the washing position. The column section 11 can, however, fill the breathing tube section 10 also at least 80% or, instead, it can essentially completely fill it.

With the aid of FIGS. 4 to 6, individual partial characteristics of the drain adapter 1 according to the invention are now explained more precisely.

In figure 4, the float 5 is in the rest position. The sealing element 4 rests in this case on the valve seat 3. In the case of activation of a first wash, the float 5 rises above an activation section 22. By virtue of the collaboration between the float 5 and float chamber 6, float 5 is moored in its washing position. The float 5 remains in its washing position until the level of the wash water S has dropped to the level shown in figure 5. When this level is reached, air can enter through the control passage 7 into the float chamber. 6 and the hydraulic balance between the float 5 and the float chamber 6 is disturbed, whereby the float 5 is lowered in the direction of the valve seat 3 from the washing position to the rest position.

A second wash is shown in Figure 6. Here the float 5 is raised with an activation section 23, which is here part of a control unit 12. In this case, an engagement takes place between the "'switch member 14 and the closing weight 13. The weight of The closure 13 is here in the form of a cup which is filled with water.As soon as the level of the wash water has now dropped to the level S shown in FIG. 6, the weight of the water in the closure weight 13 is activated and It applies a force to the float 5 via the switching member 14. By virtue of this force, the float 5 is then moved from its washing position in the direction of the valve seat 3 to its rest position.

The column section 11 is configured, as shown in the figures, in such a way that when the valve body 2 is in the flushing position, its upper end 18 or its front wall 36 is at a distance from the wall. front 19 of the breathing tube section 10. By virtue of this distance, a certain amount of residual water is then found in the float chamber 6. But the distance cannot be too great, otherwise the noises will also rise closing.

Preferably, a certain clearance is present between the outer sides 20 of the column section 11 and the inner sides 21 of the breather tube section 10. This play is advantageous, on the one hand, during the relative movement between the column section 11 and the breathing tube section 10. On the other hand, it is ensured that a certain amount of residual water is always present in this area.

The configuration of the section of the breathing tube 10 and of the column section 11 with the reduced diameter compared to the base section 9 or the lower section 29 has the advantage that parts of the control unit 12, in particular the closure weight 13, can be extended alongside the breathing tube section 10 downward. That is, parts of the control unit 12 can be moved up and down alongside the breathing tube section 10.

The section of the breathing tube 10 has, viewed in the direction of the median axis M, a height H10. The height H10 is in this case greater than the height H9 of the base section 9. In this way, the movement path of the control unit 12 can be raised further. The height H9 of the base section 9 is essentially less than the height H10 of the breathing tube section. Preferably, the height H9 of the base section 9 is between 5% and 20% of the height H of the entire float chamber 5.

Similar height relationships are provided in the float 5 between the height H29 of the lower section 29 and the height H11 of the column section 11.

As explained above, the control step 7 is configured for the activation of a first wash with a first amount of wash. Control unit 12 is configured to control a second amount of wash. The first wash quantity is preferably a full discharge wash quantity and the second wash quantity is preferably a partial discharge wash quantity.

In the embodiment shown, several control steps 7 are arranged. The control steps 7 are in this case at different heights. A first control step 7 is in this case in the region of the upper end of the breathing tube section 10. Further control steps 7 are arranged in the breathing tube section 10. That is, the control steps 7 they are distributed in the embodiment shown in their height over the breathing tube section 10. But it is also possible that additional control passages are arranged in the base section 9. Then the control passages 7 would be arranged distributed in their height on the base section 9 and the breathing tube section 10.

The drain adapter 1 further comprises at least one closure element 16, with which one of the control passages 7 can be released respectively and the other control passages 7 can be closed. That is, an installer You can define with the closing element which of the control steps 7 should be the active control step. The other control passages 7 are then correspondingly closed.

At least one of the control passages 7 is therefore arranged in the breathing tube section 10. The other control passages 7 are arranged either in the breathing tube section 10 or in the base section 9 .

The closing weight 13 is adjustable by means of an adjustment zone 15. That is, the closing weight 13 can be adjusted in its height. In this way, a corresponding amount of wash water can be defined. Preferably, the adjustment zone 15 is in its height at least to below the highest control passage 7. In this way, an overlapping of the amounts of wash water can be achieved.

In the embodiment shown, the control unit 12 further comprises a bearing bar 24, wherein the closing weight 13 is adjustable in the bearing bar relative to the bearing bar 24. The member Switch 14 is switched on via a correspondingly configured control surface 25 which is arranged in the housing in the region of the water storage tank 31.

Below the float chamber 6, the drain adapter comprises here a connection element 26, in which the valve seat 3 is arranged, wherein the connection element 26 can be connected to a cistern. The connection element 26 has several openings 27, through which the wash water can then flow towards the valve seat 3.

Above the float chamber 6 there is an optional water collector 31, which opens with a passage 32 into the float chamber 6. The water can flow through the weight 32, which is located in the water collector 31, up to float chamber 6.

LIST OF REFERENCE SIGNS

1 Drain adapter

2 Valve body

3 Valve seat

4 Sealing element

5 Float

6 Float chamber

7 Control step

8 Zones outside the float chamber

9 Base section

10 Breathing tube section

11 Column section

12 Control unit

13 Closing weight

14 Switching body

15 Adjustment zone

16 Closing element

17 Ventilation element

18 Top end

19 Front wall

20 Outer side

21 Inner side

22 Activation section

23 Trigger section

24 Bearing bar

25 Control surface

26 Connection element

27 Openings

28 Aperture

29 Lower section

30 Step

31 Water collector

32 Step

33 Overflow pipe

34 Side wall

35 Pass wall

36 Front wall

37 Side wall

38 Side wall

M Middle axis

S Wash water level

H Height

Claims (16)

1. Drain adapter (1) for a cistern, comprising a valve body (2) with a sealing element (4) that collaborates with a valve seat (3) and with a float (5), wherein the valve body (2) is movable with a sealing element ( 4) from the valve seat (3) along a median axis (M) from a rest position to a flushing position and from the flushing position to the rest position, and a float chamber (6) with a hole (28) through which the valve body (2) extends, wherein the float (5) is movable within the float chamber (6) along the central axis (M) and collaborates hydraulically with the float chamber (6), wherein the float chamber (6) comprises at least one control passage (7), through which, as soon as a level of the wash water (S) surrounding the drain adapter (1) has descended to the height of the control passage (7), air can enter from areas (9) outside the float chamber (6) to the float chamber (6), in such a way that the pressure relationships between the chamber can be compensated of float (6) and the zones (8) outside the float chamber (6), where the float (5) is mobile during the compensation of the pressure relations from the washing position to the rest position, wherein the float chamber (6) has a base section (9) that extends entirely around the middle axis (M) and a breathing tube section (10) that connects to the base section (9), wherein the cross section of the breathing tube section (10), seen transversely to the median axis (M), is smaller than the cross section of the base section (9), where the float has a lower section (29), from which a column section (11) extends, where the float (5) extends with the column section (11) inside the tube section breather (10) and wherein the valve body (2) further comprises an overflow tube (33), wherein the float (5) extends with the column section (11) and the lower section (29 ) on the outer side around the overflow tube (33), in particular in such a way that the overflow tube (33) extends centrally through the float (5), so that the column section (11) and the lower section (29) have the cross section of a cylindrical ring, and wherein the float (5) is preferably integrally formed in the overflow tube (33). Drain adapter (1) according to claim 1, characterized in that the float (5), in particular the lower section (29) as well as the column section (11) are designed closed upwards and / or because the lower section (29) is configured open or closed downward. Drain adapter according to one of the preceding claims, characterized in that the overflow pipe projects upwards onto the column section (11). Drain adapter according to one of the preceding claims, characterized in that the section of the breather tube (10) extends essentially concentric to the base section (9), and / or that 'the column section (11) it extends essentially concentric to the lower section (29). Drain adapter (1) according to one of the preceding claims, characterized in that the breather tube section (10) and the base section (9) extend completely around the median axis (M) and preferably have in each case an essentially constant diameter and / or because the column section (11) and the lower section (29) extend entirely around the median axis (M) and preferably have essentially constant diameters in each case. Drain adapter (1) according to one of the preceding claims, characterized in that the passage (30) between the breather tube section (10) and the base section (9) is conical. Drain adapter (1) according to one of the preceding claims, characterized in that the height (H9) of the base section (9), viewed in the direction of the median axis (M), is essentially less than the height (H10) of the section of the breathing tube (10), wherein the height (H9) of the base section (9) is preferably between 5% and 20% of the height (H) of the entire float chamber (6) and / or because the height (H29) of the lower section (29), seen in the direction of the middle axis (M), is essentially less than the height (H11) of the column section (11), wherein the height (H29) of the lower section (29) is preferably between 5% and 20% of the height (H) of the entire float (5). Drain adapter (1) according to one of the preceding claims, characterized in that the float chamber (6), apart from the at least one control passage (7), is laterally fully closed as far as a front wall (19). ). Drain adapter (1) according to one of the preceding claims, characterized in that a water collector (31) is present above the float chamber (6), which opens into the chamber with a passage (32) float (6), where water can flow through the passage (32), which is located in the water collector (31), to the float chamber (6). Drain adapter (1) according to one of the preceding claims, characterized in that the lower section (29) of the float (5) is in the flushing position essentially completely in the float chamber (6) and / or because the sealing element (4) of the valve body is in the flushing position essentially completely in the float chamber (6). Drain adapter (1) according to one of the preceding claims, characterized in that the column section (11), seen in cross section to the middle axis (M), fills the cross section of the breather tube section (10) essentially completely or at least 55%, in particular at least 75% and / or because the column section (11) fills the volume of the breathing tube section (10) essentially completely or at least 55% or at least 90%, when the float is in the wash position. Drain adapter (1) according to one of the preceding claims, characterized in that the control step (7) is configured to activate a first wash with a first wash quantity and in that the drain adapter (1) It further comprises a control unit (12) for controlling a second amount of washing, wherein the control unit (12), when a water level provided for the second amount of washing is reached, conditions with a weight closing force (13) a closing force (F) on the valve body (2), wherein the closing force (F) or the closing weight (13) can be switched via the switching member (14 ) from the control unit (12) onto the valve body (2). Drain adapter (1) according to claim 12, characterized in that the switching member (14) establishes a holding connection automatically with the valve body during lifting of the control unit (12) and / or in that the position of the height of the closing weight (13) is configured adjustable through an adjustment zone (15). Drain adapter (1) according to one of claims 12 to 13, characterized in that the first wash is a full discharge wash and in that the second wash is a partial discharge wash and in that the first wash is a full discharge wash. partial flush and because the second wash is a full flush wash. Drain adapter (1) according to one of the preceding claims, characterized in that several control passages (7) are arranged on different height positions, wherein the drain adapter (1) further comprises at least one closing element (16), with which one of the control passages (7) can be released and the other control passages (7) can be closed, preferably at least one of the control passages (7) It is arranged in the breathing tube section (10), and wherein the other optional control passages (7) are arranged in the breathing tube section (10) and / or in the base section (9). Drain adapter (1) according to claim 13 and one of claims 14 or 15, characterized in that the adjustment zone (15) of the closing weight (13) extends in its height at least to below the higher control step (7).