ES2865295T3 - 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 movable with the valve body (2) during the compensation of the pressure relationships from the flushing position to the rest position, where the float chamber (6) is configured, apart from the at least one control passage (7), fully closed to a front wall (19) laterally with a side wall, where the float chamber (6) has a base section (9) that extends entirely around the median axis (M) and a breathing tube section (10), which is connected in 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) to the interior of the tube section breathing (10).

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

Drain adapters with the characteristics according to the preamble of claim 1 are known, for example from documents EP0522218A1, FR2576620A1 and FR2658219A1. Furthermore, drain adapters for activating flushing from a cistern are known from the state of the art. In particular, drain adapters are known for the selective activation of a full flush or a partial flush. For example, document EP 0 722 020 shows a washing installation of this type. For the partial discharge, a weight body is arranged, which can optionally be connected to the valve body.

Another discharge adapter is known from DE 102007001 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 is configured, apart from the at least one control passage, totally closed up to a front wall laterally with a side wall. The float chamber has a base section that extends fully around the mid-axis and a breather tube section, which connects at 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 into the breathing tube section. The lower section extends and moves essentially within the base section.

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

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.

Below the column section, the float preferably has a lower section, wherein the lower section is essentially shaped like a cylinder, circulates and preferably fills the base section of the float chamber in the washing position or essentially fills it up.

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 breathing tube section of the float chamber extends essentially concentric to the base section. The breathing tube section and the base section are preferably concentrically superimposed. The expansion of the breathing tube section, seen transversely to the median axis, is in this case preferably less than the expansion of the base section.

By "concentrically" it is meant in the present context that the breathing tube section and the base section extend about a common median axis. The two sections are configured in this case so as to extend around the median axis.

Preferably, the column section of the float extends essentially concentric to the lower section. The column section and the lower section are preferably arranged concentrically superimposed. The expansion of the column section, seen transversely to the median axis, is in this case 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 configured in this case so as to extend 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 breathing tube section are configured such that the float is movable in the float chamber. . The two shapes are designed essentially in accordance with one another, optionally with play to one another.

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 less than that of the base section. The same can be said for the diameter ratio between the lower 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 cylindrical in shape, 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 cylindrical in shape, 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 passage between the breathing tube section and the base section is conically configured. Through this step the reduction of the diameter from the base section over the breathing tube section is achieved.

Preferably, the height of the base section, viewed in the direction of the mid-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 chamber. The height of the entire float is made up of the height of the lower section and the height of the column section.

The float chamber, that is, the breathing tube section and the base section, apart from the at least one control passage, is configured fully closed to a front wall laterally with a side wall. The float chamber is configured open downwards. The hole is preferably present in the front wall. bearing, in which the valve body is movably housed.

Preferably, above the float chamber there is a water accumulator, which opens with a passage into the float chamber, where water, which is in the water accumulator, can flow through the passage to the chamber. float. The water accumulator is filled during the filling of the tank and is configured in such a way that it can be emptied during a tank emptying only through the passage. The water storage tank can also be designated as a tank.

Preferably, the lower section of the float is in the essentially fully filled position in the float chamber. That is, the lower section moves during the activation of the wash essentially entirely within 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, seen in cross section to the mid-axis, fills the cross section of the breathing 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 essentially completely or at least 55% or at least 75% when the float is in the wash position. In this context, "essentially of everything" means that the column section and the breathing tube section are arranged in such a way that between the column section and the breathing tube section there is always present a residual amount of water. The aforementioned configurations have the advantage that the portion of water, which presses on the float, can be kept small when the float is moved from the washing position to the rest position.

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

Preferably, the control step is configured to trigger a first wash with a first amount of wash. Furthermore, the drain adapter comprises a control unit for controlling a second amount of washing. The control unit conditions, when a water level intended for the second wash quantity is reached with a closing weight, a closing force on the valve body, whereby the closing force can be switched via a switching member 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. That is, the closing weight can move 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 step, which increases the flexibility of the water intake adjustment.

Preferably, the control unit is arranged in front of 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, completely closed up to a front wall 19 laterally with a lateral wall 34. The control passages 7 in this case pass through the lateral wall 34. The lateral wall 34 it delimits the base section 9 and the breathing tube section 10 outwardly. The hole 28 is located 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, such that the pressure relationships between the float chamber 6 and zones 8 outside the float chamber 6 can be compensated. During this compensation, the float and / or the 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.

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 9, in particular circular cylindrical, which extends entirely around the median axis. M, the base section 9 and a breathing tube section 10 that connects to the base section 9. The breathing tube section 10 in this case connects to the base section 9. In the mounting position, the base section 9 is below the breathing tube section 10 and the breathing tube section 10 is above the base section 9. It can also be said that the breathing tube section 10 extends the chamber of float 6 from the base section 9 upwards. The breathing tube section 10 is bounded by 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 less than the cross section of the base section 9. The volume of the section of the breathing tube 10 is preferably less than that of the base section 9.

The breathing tube section 10 extends essentially concentric to the base section 9, that is to say, the two cylinders or circular cylinders extend around the common middle axis M. The breathing tube section 10 presents over its entire height H10 a constant diameter. In the same way, the base section 9 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 between the base section 9 and the breathing tube section 10 is conically shaped, that is, in the region of the passage 30 the diameter of the float chamber is reduced from the diameter The larger diameter of the base section 9 over the smaller diameter of the breathing tube section 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 as follows. a manner adapted or essentially similar to the inner shape of the float chamber 6. That is, the inner shape is of the same or similar shape to the outer shape. As mentioned here, it is advantageous that clearance is present between the inner shape and the outer shape.

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

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

The passage from the lower section 29 to the column section 11 is here configured as the balance of the diameter. The column section 11 extends essentially cylindrical with respect to the lower section 29. That is, the two cylinders or circular cylinders extend around the common middle axis M. The column section 11 and the lower section 29 have a diameter constant, so that the diameter of the column section 11 is 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 these undergo lift in the water. The hollow space conditioned through the two sections can in this case be filled with air. The hollow space is configured open downward in the embodiments shown. It can also be designed as a closed hollow space.

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 the Fill is preferably at least 70%, when the column section 11 is with the float 5 in the washing position. The column section 11 can fill the breathing tube section 10, but also at least 80% or essentially completely.

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. In this case, the sealing element 4 rests on the valve seat 3. In the event of activation of a first wash, the float 5 rises with the tube valve 2 above an activation section 22. By virtue of the collaboration between the float 5 and the float chamber 6, the 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 switching member 14 and the closing weight 13. The closing weight 13 It is here in the shape of a cup that is filled with water. As soon as the level of the wash water has now dropped to the level shown in FIG. 6, the weight of the water in the closing weight 13 is activated and a force is applied 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 26 is at a distance from the front wall 19 of the valve section. Breather tube 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 closing noises will also increase.

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 breathing tube section 10 and 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, especially the weight The closure 13 may extend together with 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 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 passage 7 is in this case in the region of the upper end of the breathing tube section 10. Further control passages 7 are arranged in the breathing tube section 10. That is to say that the control passages 7 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 passages of control 7 would be arranged distributed in their height over 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. With Preferably, the adjustment zone 15 is at its height at least to below the highest control step 7. In this way, an overlapping of the amounts of wash water can be achieved.

In the embodiment shown, the control unit 12 also has a bearing bar 24, whereby the closing weight 13 is accommodated in an adjustable manner on the bearing bar relative to the bearing bar 24. The member Switch 14 is activated via a correspondingly configured control surface 25 which is arranged in the housing in the region of the water storage chamber 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 optimal water accumulator 31, which opens with a passage 32 into the float chamber 6. Through the passage 32, water, which is located in the water accumulator 31, can flow 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

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 accumulator

32 Step

33 Overflow pipe

34 Side wall

M Central axis

S Wash water level

H Height

Claims (13)

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 movable with the valve body (2) during the compensation of the pressure relations from the position wash to rest position, wherein the float chamber (6) is configured, apart from the at least one control passage (7), totally closed up to a front wall (19) laterally with a side wall, wherein the float chamber (6) has a base section (9) that extends entirely around the median axis (M) and a breathing tube section (10), which connects to the base section (9) , wherein the cross section of the breathing tube section (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) to the interior of the tube section breathing (10). Drain adapter (1) according to claim 1, characterized in that the breather tube section (10) extends essentially concentric to the base section (9) and / or that the column section (11) is 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 entirely around the median axis (M) and preferably have essentially constant diameters, respectively, 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, respectively. 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 breathing tube section (10), wherein the height (H9) of the base section (9) is preferably between 5% and 20% of the height of the entire float chamber (6) me 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), where the height (H29) of the lower section (29) 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 a water accumulator (31) is present above the float chamber (6), which opens into the chamber with a passage (32) of float (6), where through the passage (32) can circulate water, which is in the water accumulator (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 in that 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 totally or up to at least 55%, in particular up to at least one 75% and / or because the column section (11) fills the volume of the breathing tube section (10) essentially completely or to at least 55% and / or to at least 90%, when the float is in in the wash position. Drain adapter (1) according to one of the preceding claims, characterized in that the control passage (7) is configured to activate a first side with a first amount of washing 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) conditions, when a water level provided for the second amount of washing is reached with a weight of closing (13), a closing force on the valve body (2), wherein the closing force (F) can be switched or transmitted through a switching member (14) from the control unit ( 121) on the valve body (2). Drain adapter (1) according to claim 9, characterized in that the switching member (14) establishes a holding connection automatically with the valve body (2) during lifting of the control unit (2) and / or because the height position of the closing weight (13) is adjustable through an adjustment zone (15). Drain adapter (1) according to one of the preceding claims 9 to 10, characterized in that the first wash is a full discharge wash and that the second wash is a partial discharge wash, or that the first wash is a partial discharge wash and the second wash is a full discharge wash. Drain adapter (1) according to one of the preceding claims, characterized in that several control steps (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 10 and one of claims 11 or 12, 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).