ES2388348T3 - Water discharge valve in two quantities - Google Patents

Abstract

Drain valve for a water discharge tank, with a housing (1) that is provided with a return seat (1.4) that defines an outlet opening, an overflow pipe (2) that is provided at its lower end with a seal (3) acting together with the valve seat, an upper float (4) that can be adjusted in height with respect to the overflow tube, a lower float (5), and with an activation device to optionally activate a water discharge partial or complete water discharge, in which the lower float (5) is provided with a stop (7.1) in which the overflow pipe (2) is seated in an elevated position, assigned to a complete water discharge by means of a projection ( 2.4) provided in the overflow tube, in which the upper float (4) can be fixed by means of a height adjustment element (6) to the overflow tube (2) and is sized so that it rises in the submerged state, after a short elevation of tu bo overflowing from its closed position, the overflow tube (2) by means of its ascending force optionally allows it a position assigned to a partial water discharge or complete water discharge, in which the upper float (4) maintains both in case of a partial water discharge as in the case of a complete water discharge an adjusted position with respect to the overflow tube (2), characterized in that the lower float (5) is rotatably placed in the housing (1) and is suspended through of an arm (7) rotatably placed in the housing (1) in a chamber (8) configured in the housing, which has at least one upper inlet opening (8.1) and at least one lower outlet opening (8.2), the outlet opening being provided with an adjustment element to modify the size of the opening, and being formed with the outer side of the overflow tube (2) a guide rail (2.5) running in the axial direction of the overflow tube for guide the arm (7).

Description

Water discharge valve in two quantities

The invention relates to a drain valve for a water discharge reservoir, with a housing which is provided with a valve seat defining an outlet opening, an overflow tube which is provided at its lower end with a seal that It acts together with the valve seat, an upper float that can be adjusted in height with respect to the overflow tube, a lower float that is rotatably placed in the housing, and with an activation device to optionally activate a discharge of partial water or complete water discharge, in which the lower float is provided with a stop in which the overflow tube is set in an elevated position, assigned to a complete water discharge by means of a projection provided in the overflow tube.

To save water, drain valves were developed for water discharge tanks of toilets that allowed the user to optionally discharge water with two different amounts of water.

The drain valves of the water discharge technique in two quantities generally have a housing with an overflow tube that can be raised and lowered vertically, the lower end of the overflow tube being provided with a seal, with which a seal can be closed. exit opening. The overflow tube is lifted by means of at least one actuating element, for example in the form of a push button. In addition, these two-way drain valves feature a lower float for complete water discharge and an upper float for partial water discharge (small water discharge). By adjusting the height of the upper float, the amount of water to discharge water can be adjusted for partial water discharge.

For these drain valves, numerous embodiments were proposed that mainly refer to the transfer of force of the respective actuating elements to the overflow tube as well as to the joint action between the floats and the overflow tube. With reference to the prior art, publications EP 1 354 100 B1, EP 1 672 130 A1, DE 101 13 115 A1 and DE 297 23 618 U1 can be mentioned as an example. The drain valves in two known quantities are not completely satisfactory in terms of their mode of operation, particularly as regards the effort required to activate the complete water discharge.

In the case of the drain valve known from EP 1 354 100 B1, the overflow tube has a side recess that acts in conjunction with a lever that can be rotated around an axis of rotation that runs perpendicular to the longitudinal axis of the overflow tube , the lever being operated by a pressure-charged cable, guided in a sleeve in the form of a flexible tube, one end of which is fixed to the lever and whose other end is fixed to a gate valve. Two pushbuttons that can slide against the force of a spring on paths of different lengths are seized to the gate valve, the pushbutton that can slide on a shorter path serving the activation of a partial water discharge, while the pushbutton that can slide on a longer path serves to activate a complete water discharge. Therefore, for the activation of the complete water discharge, in case of this drain valve, the sliding of the assigned button along a relatively long sliding path and thus a relatively high effort is required.

The drain valve known from EP 1 672 130 A1 is provided with a two-volume actuator that is formed of keys and pushbuttons and is hooked through a linkage to the overflow pipe that serves as the closing body. For the partial water discharge, a two-arm linkage lever is rotated around a smaller angle than in the case of a complete water discharge. Therefore, also in the case of this known drain valve, the sliding of the corresponding button along a relatively long sliding path and thereby a correspondingly high effort is required for the activation of the water discharge.

From DE 297 23 618 U1 a set of drain valves for a water discharge tank with the characteristics of the preamble of claim 1 is known. This has a drain valve that can be operated for a partial water discharge or a Complete water discharge through a valve body. The drain valve assembly comprises a first ascending thrust body disposed in a float housing within the water discharge reservoir, which during partial water discharge is prevented for an ascending thrust, and a second ascending thrust body which is arranged above the first ascending thrust body and can be adjusted individually by axial adjustment. The (first) lower ascending thrust body is movably guided in the valve body between its lower position fixedly held and its upper position holding the valve body. In case of activation of a complete water discharge by means of a cam, the (first) lower ascending thrust body holds the valve body through a positioning disc. In case of activation of a partial discharge by means of another cam, the (first) lower ascending thrust body is held by the retention force of magnetic parts in a fixed manner in the float housing. Also in case of this known drain valve, a correspondingly high effort is necessary for the activation of the water discharge.

The present invention is based on the objective of creating a drain valve in two quantities of the type mentioned above that allows a particularly convenient activation of a partial water discharge as well as complete water discharge with minimal effort.

This objective is solved by means of a drain valve with the characteristics of claim 1.

The drain valve according to the invention is characterized in that the upper float can be fixed by means of a height adjustment element to the overflow pipe and is sized so that it rises in the submerged state, after a short elevation of the overflow pipe from its closed position, the overflow tube by means of its ascending force optionally to a position assigned to a partial water discharge or complete water discharge. In this respect, the upper float maintains both an adjusted position with respect to the overflow pipe in the case of a partial water discharge and in the case of a water discharge.

In addition, the drain valve according to the invention is characterized in that the lower float is suspended through an arm rotatably placed in the housing in a chamber configured in the housing, which has at least one upper inlet opening and at least one lower outlet opening, the outlet opening being provided with an adjustment element for modifying the size of the opening, and with the outer side of the overflow tube being formed a guide rib that runs in the axial direction of the overflow tube to guide the arm.

By means of this chamber, the sinking of the lower float can be delayed with respect to the decrease of the water level in the water discharge tank, the time delay can be adjusted with the adjustment element assigned to the outlet opening. In this way, the moment at which the overflow tube with its projection loses contact with the stop configured in the lower float can be displaced in the event of a water discharge, and therefore the amount of discharge of flowing water can be adjusted in case of a complete water discharge in the toilet bowl.

The drain valve according to the invention is characterized by a particularly smooth and comfortable operation. Then after the user has raised the overflow tube from the closed position at a relatively low elevation, the other lift movement of the overflow tube is made to the position assigned to the partial water discharge or complete water discharge independently by the ascending force of the upper float. The ascending force of the upper float is used, in this respect, both in the case of the activation of a partial water discharge and in the case of the activation of a complete water discharge to minimize the force to be applied by the user.

The drain valve according to the invention makes it possible to considerably reduce the sliding path required of a button for the activation of a complete water discharge. According to this, new interesting configuration possibilities result for the drive plates in the water discharge technique in two quantities.

An advantageous configuration of the drain valve according to the invention is that the height adjustment element for the upper float has a bar-shaped section, in which at least one clamping element is configured in the overflow pipe, at that the bar-shaped section of the height adjustment element can be attached. Preferably, for this purpose, a groove extending in the longitudinal direction of the overflow tube with shaped fasteners, in which the height-adjusting element in shape drag is placed, is configured on the lateral surface of the overflow pipe. The upper float can be fixed so that it can be reliably released to the overflow pipe, at different heights, and the corresponding components and their assembly can be carried out economically.

The chamber in which the lower float is suspended is preferably formed by the housing and a separating partition disposed within the housing.

As for the manufacture of the drain valve according to the invention and for the assembly of its components it is favorable when, according to another configuration, the lower float is connected so that it can be released with the rotating arm.

Another advantageous configuration of the drain valve according to the invention consists in that at the upper end of the overflow tube, grip elements are configured to raise the overflow tube, the activation device comprising for optionally activating a partial water discharge or Complete water discharge levers assigned to the gripping elements that are rotatably placed on a support that can slide as an overlapping part in the casing of the drainage valve in form drag. The support forms with the levers, in this respect, a unit that can be mounted as well as disassembled quickly and easily.

In another configuration of the drain valve according to the invention it is proposed that the levers in the support comprise two levers that can rotate independently of each other with housings for joining Bowden cables, of which a lever is connected with a lever to activate a discharge of partial water, while the other lever is connected with a lever to activate a complete water discharge. Bowden cables allow a very flexible arrangement and configuration of an actuation plate assigned to the drain valve. In addition, tension-designed Bowden cables are considerably safer to operate than pressure-charged cables according to DE 101 13 115 A1, which basically tend to bend and in this respect are subject to breakdowns. Particularly Bowden cables designed by voltage of

5 more flexible way than pressure-charged cables according to DE 101 13 115 A1.

The respective Bowden cable is preferably provided at its end assigned to the drive plate of a transducer that converts a pressure force exerted with a push button of the drive plate into a tensile force.

Other preferred and advantageous configurations of the drain valve according to the invention are indicated in the attached dependent claims.

The invention will be explained in more detail in the following by means of a drawing representing several embodiments. They show:

1 shows a perspective view of a drain valve according to the invention for water discharge tanks in the closed position, with a housing shown, cut vertically;

Figure 2 a side view of the drain valve of Figure 1, also in the closed position;

Figure 3 a side view of the drain valve of Figure 1 with housing shown, cut and outlet port represented in section, at the start of a complete water discharge;

Figure 4 a side perspective view of the valve housing shown, cut from Figure 1;

Figure 5 a top plan view in perspective of the drain valve housing of Figure 1;

Figure 6 a side perspective view of the drain valve of Figure 1 at the end a complete water discharge;

Figure 7 a top plan view in perspective of the bottom float of the drain valve of Figure 1;

Figure 8 a perspective representation of a support for placing the drain valve of Figure 1 on a housing cover of 25, with several levers rotatably positioned thereon to activate a complete or partial water discharge;

Figure 9 a perspective representation of the drain valve of Figure 1 in the closed position with the support mounted thereon according to Figure 8;

figure 10 another perspective representation of the drain valve of figure 9, the

30 right half of the housing and the outlet opening and the overflow tube being located with a seal fixed therein in an elevated position corresponding to a complete water discharge;

11 shows a perspective representation of the drain valve of FIG. 9, the right half of the housing and the outlet opening being cut again and the overflow tube with a seal fixed therein in a position high corresponding to a

partial water discharge;

Figure 12 two transducers in housing-type supports, separated from each other, which respectively convert a pressure force into a tensile force, and sections of Bowden cables coupled therewith, in perspective view;

Figure 13 a side view of the front transducer of Figure 12, with half of the housing omitted for better viewing;

Figure 14 shows a side view of a drain valve according to the invention according to a second embodiment, with housing shown, cut and outlet shown, cut off, at the start of a complete water discharge; Y

Figure 15 shows a side view of a drain valve according to the invention according to a third embodiment, with housing shown, cut and outlet shown, cut, in the closed position.

The drain valve according to figure 1 is made as a drain valve in two quantities, with which both a complete water discharge and a small water discharge can be activated (partial water discharge 50). The drain valve has a housing part 1 of the container type, of which it is represented in

Figure 1 a half that results through a vertical cut. A bouncing base 1.1 is configured in the lower part of the housing part 1, to which a ring-shaped housing part 1.2 can be attached, which ends essentially levelly with the outer side of the housing part 1 by interlocking or otherwise. With the lower housing part 1.2 a tubular coupling 1.3 is formed through vertical, angular spacers, which defines an outlet opening with a valve seat 1.4 and is placed in a tubular coupling of a water discharge reservoir (not shown ) (see Figures 1 and 3).

The drain valve also has a closing body in the form of an overflow tube 2 which is provided at its lower end with a seal that acts in conjunction with the valve seat 1.4. The seal 3 is configured in the form of a circular ring disk and is made for example of rubber or the like. This is clamped in a ring groove configured in the overflow tube 2 in shape drag. The outer diameter of the overflow tube 2 is essentially smaller than the outer diameter of the valve seat 1.4 and correspondingly to this essentially smaller than the outer diameter of the seal 3. Accordingly, the seal 3 has a contact surface 3.1 relatively large for the water column.

With the upper end of the overflow tube 2 two grip elements (grip points) are formed

2.1 to raise the overflow pipe. The grip elements 2.1 are configured as pins projecting radially from the outer side of the overflow tube 2.

The drain valve is provided with an upper float 4 and a lower float 5. The upper float 4 is placed in an adjustment element 6, by means of which the float 4 can be fixed to the overflow tube 2 so that it can be adjusted in height. The overflow tube 2 has a groove 2.2 cut by the rear part, which extends in the axial direction, in which a bar-shaped section 6.1 of the height adjustment element 6 is placed in a form drag. At the upper end of the bar-shaped section 6.1 an angular section 6.2 is configured as a gripping element. Along the slot 2.2 there are several concavities (notches) 2.3 that serve as a fastener. On the longitudinal edges of the bar-shaped section 6.1 of the height adjustment element, projections 6.3 are configured, with which the height adjustment element 6 can be joined (locked) in the concavities 2.3. In the bar-shaped section 6.1, two groove-shaped perforations 6.4, which run parallel to each other, allow an elastic spring pressure of the projections 6.3 to be displaced along the projections 6.3. height adjustment element 6 along the vertical groove 2.2.

The upper float 4 is in the case of the full water discharge tank below the water level W (see Figure 3). The upper float 4 is sized so that it opens the drain valve independently in the submerged state after a short elevation of the overflow pipe 2 from the closed position according to figures 1, 2 and 9 by its ascending force, that is to say the overflow tube 2 optionally towards a position assigned to a partial water discharge or complete water discharge. The float 4 maintains, in this respect, both in the case of a partial water discharge and in the case of a water discharge, it completes the adjusted position by means of the height adjustment element 6 with respect to the overflow tube 2.

The upper float 4 is provided laterally with guide ribs 4.1 that run vertically, which are guided in guide ribs 1.5 that run vertically on the inner side of the housing part 1 of the container type. The guide ribs 4.1, 1.5 are configured on two opposite sides of the float 4 or the housing part 1 (see Figures 2, 4 and 5).

At the base of the housing type 1 of the container type, a perforation 1.6 is cut through the overflow tube 2 with a gap (see Figures 3 and 5).

The lower float 5 is rotatably positioned in the housing 1 and is provided with a stop 7.1, in which the overflow tube 2 is set in an elevated position, which corresponds to a complete water discharge by a projection (point of clamping) 2.4 provided in the overflow pipe 2.

The lower float 5 is fixed so that it can be released on one arm 7. The arm 7 has a section 7.2 essentially U-shaped with two angled sides 7.3 (see Figure 6). At the ends of the sides 7.3 hinge elements 7.4 are configured which can be joined with the housing 1. The hinge elements 7.4 are constituted by pivots that engage in holes 1.7 aligned with each other in the housing. The axis of rotation of the arm 7 or the float 5 runs essentially perpendicular to the vertical longitudinal axis of the overflow tube

2.

With the outer side of the overflow tube 2, guide ribs 2.5 are formed which run axially to guide the arm 7. The guide ribs 2.5 are arranged diametrically. The perforation 1.6 at the base of the housing part 1 has correspondingly two diametrically opposed recesses (widenings) 1.61, 1.62, in which the guide ribs 2.5 of the overflow tube 2 are housed.

A control edge 7.5 is configured on at least one of the sides 7.3 of the arm 7 which, during a partial water discharge, slides along the guide rib 2.5. The control edge 7.5 is configured on a ledge on the side

7.3 (see Figures 2 and 3).

The nose-shaped projection 2.4, with which the overflow tube 2 sits in the event of a complete water discharge in the stop 7.1 of the arm 7, is formed with the guide rib 2.5 and is directed to the lower float 5.

The lower float 5 is suspended in a chamber (control chamber) 8. The chamber 8 is formed by the outer wall and the base of the container 1 as well as a partition wall 1.8 disposed within the housing. Chamber 8 has an upper inlet opening 8.1 and a lower outlet opening 8.2 (see Figures 4 and 5). The outlet opening 8.2 is provided with an adjustment element (not shown) to modify the opening size. The adjustment element can be constituted for example by a turn or slide closure, a cover plate or a plug.

The drain valve at the start of the complete water discharge is shown in Figure 3. The water discharge tank is still full. The water level W is above the float 4 fixed to the overflow tube 2. After activating the complete water discharge, the float 4 has raised the overflow tube 2 with the plug 3 by its ascending thrust. The valve seat 1.4 is free. Water flows out of the water discharge reservoir through tubular coupling 1.3 into the connected WC cup.

The nose (clamping point) 2.4 in the form of a nose of the overflow tube 2 is now at the stop 7.1 on the control edge 7.5 of the arm 7 rotatably positioned. The arm 7 is held by the lower float 5 (control float) in its upper position according to figure 3.

Figure 6 shows the drain valve at the end of the complete water discharge. The water level (water surface) W has decreased in the water discharge tank and in the housing part 1 of the drain valve container type, while in the chamber (control chamber) 8 initially it is still present a water level (water surface) higher Wk. Not until a drainage time depends on the opening size of the outlet opening 8.2, the lower float (control float) 5 loses its upward thrust and releases the overflow tube with 2 the control edge 7.5 with the control edge 7.5 2.4 nose-shaped projection. The overflow tube 2 with the seal 3 placed therein can now fall into the valve seat 1.4 and can close the outlet opening.

The amount of water discharge for the complete water discharge can therefore be adjusted to certain limits, regardless of the level of the water in the water discharge tank or the drain valve housing 1.

In figure 7 the bottom float 5 is shown separately from the rotating arm. The bottom float 5 is provided with at least one chamber (recess) 5.1 open at the top that is filled with water during operation. If the control chamber 8 configured in the drain housing 1 is filled with water, then the lower float 5 has an ascending thrust, the groove 5.1 filled with water being neutral in action. Not until the water level in the control chamber 8 falls does the notch 5.1 fill the water as a weight and causes the float 5 to tip the arm 7 with the control edge 7.5 of the overflow tube 2 distally to the side, of so that the overflow tube 2 is released (see Figure 6).

With the upper side of the lower float 5, a pivot-shaped connecting element 5.2 is formed or fixed, having a head with an enlarged diameter, which can be dragged in shape in a housing of the arm 7 having elastically extensible sides, in the form of fork.

Optionally activating a complete water discharge or partial water discharge can be carried out in the case of the drain valve in two quantities according to the invention, particularly through a Bowden cable drive.

A preferred configuration of such an activation device is now explained with reference to Figures 8 to 13.

Figure 8 shows a support 9 configured as an overlay, which is mounted on a housing cover 1.9 that can be interlocked with the housing part 1 (see Figure 9). On the lower side of the cover 1.9, a stepped flange 1.91 is configured, which can be inserted into the housing part 1 comprising elastic spring sections or tongues 1.92 with the outer side of which there are protrusions that can be locked in recesses 1.10 of the housing 1 The cover 1.9 also has a hole 1.93 for the overflow tube 2.

The support 9 that can slide on the cover 1.9 is essentially U-shaped. It has two wall sections 9.1, 9.2 which run essentially vertically and parallel to each other, which are joined in one piece with one transverse wall 9.3. With the inner sides of the wall sections 9.1, 9.2, core sections 9.4 are formed which run parallel to each other as joining elements, which act together with angular elements formed with the housing cover 1.9 and form a joint that can be released, in drag of form and in drag of force. In addition to the core sections, support elements 9 and / or cover 1.9 are preferably provided with clip elements to simplify the functional positioning of the support 9 with respect to the overflow tube 2.

The upper soul sections 9.5 become a base section 9.6 which has an arc-shaped recess 9.7 adapted to the overflow tube. With the base section 9.6 and the transverse wall 9.3, two souls 9.8 are formed that run vertically and parallel to each other.

In sections 9.1, 9.2 and souls 9.8, perforations 9.9 aligned with each other are configured, in which one or two bar-shaped axes are housed. On the axis or axes, levers 10.1, 10.2 are rotatably positioned independently of each other. The levers 10.1, 10.2 have a groove and a housing for connecting a tensile wire head of a Bowden cable 11.1, 11.2 respectively at its opposite end to the shaft (see Figures 8 and 9).

With the upper section of the transverse wall, an added piece 9.31 is formed externally in which perforations are formed for the passage of the tensile wires of the Bowden cables 11.1, 11.2. The respective perforation has a recess with which a sleeve connected to the sleeve in the form of a flexible tube of the Bowden cable 11.1, 11.2 is in trailing contact.

The levers 10.1, 10.2 connected with the Bowden cables 11.1, 11.2, arranged between the vertical souls 9.8 are rigidly connected to the respectively with an activation lever 10.3 or 10.4 that acts as the activation element. The activation levers 10.3, 10.4 are arranged, in this respect, between the vertical wall section 9.1 or 9.2 and the adjacent vertical core 9.8.

To the left lever 10.3 is assigned a lever (control lever) 10.5 of two arms, angularly which is also rotatably placed in the support 9. As can be seen in figures 9 and 10, the lever 10.5 is in contact with an arm 10.51 with the activation lever 10.3 assigned tangentially and slides on the activation lever 10.3 when it is turned. The second arm 10.52 of the lever 10.5 serves in case of activation of a partial water discharge as a stop for the grip element 2.1 formed with the overflow tube 2.

The support 9 is provided with a recoil spring that retracts the respective lever 10.1 or 10.2 and the activation lever 10.3 or 10.4 rigidly attached to the rotation with the same towards a starting position. The Bowden 11.1 or 11.2 cable connected with the 10.1 or 10.2 lever is charged, in this respect, only in tension.

The activation device is connected to an actuation device (not shown) which is constituted by an actuation plate with two actuation keys (pushbuttons) positioned slidably or rotatably therein. The actuation keys are usually configured in different sizes, the larger of the two actuation keys being used to activate a complete water discharge, while the smallest actuation key is assigned to the small water discharge (partial water discharge ).

Two highly flexible Bowden cables 11.1 and 11.2 are used as force transfer elements. A transducer 12 is arranged between the actuation key and the respective Bowden cable which converts a pressure force exerted with the actuation key into a tensile force (see Figures 12 and 13).

The transducer 12 is provided with a support 13 which has clip elements (fasteners) 13.6 in the form of a tongue and is held on the rear side of the drive plate so that it can be released. As can be seen in Figures 12 and 13, the transducer 12 has a first lever 12.1 and a second lever 12.2 rigidly connected to the rotation therewith, which are rotatably placed in a common journal 14 of the support 13. In the first lever 12.1 is articulatedly positioned a pusher 12.3 assigned to the actuation key. The lever 12.1 has a circular arc-shaped articulation bushing that encompasses a cylinder formed with the pusher 12.3 with more than 180 °, for example approximately 220 °. A bar-shaped section is connected to the head 12.3 in the form of a cylinder. At the other end of the lever a bushing-shaped articulation fork is configured which is slid in the articulation journal 14 of the support 13. The lever 12.1 is connected through its articulation fork in the area of an articulation fork of the second lever 12.2 with the latter in drag and rigid way to the turn.

The second lever 12.2 is provided at its opposite end to the articulation fork of a housing 12.21 for connecting the traction wire of the Bowden cable 11.1 or 11.2. The traction wire has at its ends (as it is known per se) block-joined or pressed heads that can be dragged into the housing 12.21 or the lever housing 10.1 or 10.2 disposed in the drain valve.

The support 13 of the transducer 12 is formed by two housing halves 13.4 and 13.5 that can be joined together so that they can be released. The bushing-shaped casing half 13.4 has on its inner side the articulation journal 14, while the other bushing-shaped casing half 13.5 has a bore 13.51 that aligns with the articulation journal 14, through which it passes the lever-shaped articulation fork of the lever 12.1 arranged externally with radial clearance. Accordingly, the second lever 12.2 is encapsulated and rotatably placed in the support 13. On the support 13 a recoil spring 15 is arranged which pretends the lever 12.2 in a starting position.

The housing halves 13.4, 13.5 form a hole 13.52 for the passage of the Bowden cable 11.2. Drilling

13.52 presents a recess with which a sleeve connected to the sleeve is in contact

flexible tube shape of cable 11.2 (see figure 13).

The transducers 12 assigned to the Bowden cables 11.1, 11.2 are placed in separate brackets (housings) 13.1, 13.2, so that they can be held independently of one another in various positions of the actuation plates, in the case of actuator plates configured in a manner different.

In Figures 9 to 11, the overlapping part 9 is slid in the housing cover 1.9 and is interlocked with it so that it can be released. The levers 10.1, 10.2 with the Bowden cable housings are rotatably placed on the superimposed piece 9 and are dragged together with the levers 10.3 or 10.4 for the activation of a partial or complete water discharge. The angular, two-arm control lever 10.5 that communicates with the activation lever 10.3 serves to release a complete water discharge.

In figure 9, the drain valve is closed. In figure 10 the drain valve is shown, on the contrary, during the complete water discharge. By stretching the Bowden cable 11.1, the lever 10.1 and the activation lever 10.3 are turned upwards, the lever 10.3 raising the overflow tube 2 in the grip element 2.1. The lever 10.3 also releases the lever 10.5 which, in this respect, slides with its projection along the inner side of the lever 10.3. The float 4 connected to the overflow tube 2 can now raise the overflow tube 2 to an open position assigned to the complete water discharge. The gripping element 2.1 formed with the overflow tube 2 does not collide, in this respect, against the lever 10.5.

In figure 11 the drain valve of the partial water discharge can be seen. Levers 10.1 and 10.3 are not activated in this case. By stretching the Bowden cable 11.2, the lever 10.4 is rotated through the lever 10.2, which in this respect presses from below against the gripping element 2.1 of the overflow tube 2 and somewhat elevates the overflow tube 2. The float 4 attached with the overflow tube 2 push up the overflow tube. Because the lever 10.5 is not released but is locked by the lever 10.3, it pushes the pin-shaped grip 2.1 of the overflow tube 2 below the stop formed with the lever 10.5. The overflow tube 2 is thus prevented from floating in the open position assigned to a complete water discharge. When the water level in the water discharge reservoir has fallen below a certain level and the float 4 no longer has sufficient upward thrust, the drain valve is closed after the partial water discharge. The amount of water in the partial water discharge can be adjusted by means of the height adjustment element 6 slidable in a certain range.

In the case of the exemplary embodiment shown in Figure 14, the lower float 5 or the arm 7 connected therewith is provided with a lever 16. By operating the lever 16 rigidly fixed to the arm 7, the stop 7.1 is removed. , in which the projection 2.4 of the overflow pipe 2 is seated in the position assigned to a complete water discharge, of the projection 2.4 that is seated. This way a complete water discharge can be interrupted in advance. The embodiment shown in Figure 14 corresponds to the so-called water discharge interruption technique. The activation of the lever 16 can be carried out again in this respect by means of a Bowden cable.

Instead of a Bowden cable activation, other activation mechanisms can also be used in the case of the drain valve according to the invention. It is essential, in this regard, that the overflow tube 2 for the complete water discharge can be freely raised, while for the partial water discharge the float height of the overflow tube 2 is limited.

Another exemplary embodiment of a drain valve according to the invention is shown in Figure 15. There, the upper float 4 is sized so that its upward thrust is greater than the closing force of the overflow tube 2. The water column in this case presses on the seal 3. The float 4 is provided with a magnet 17, to which an electro coil 18 assigned to the drain valve housing is assigned. A minimum decrease of the float 4 fixed to the overflow tube 2 separates the magnet 17 and the electrocoil 18, so that the drain valve opens independently.

In the housing 1 of the drain valve in two quantities, a lock that can be unlocked (not shown) is placed, by means of which an upward movement of the overflow pipe 2 caused by the upper float 4 can be limited. In the event of a discharge of partial water, the overflow pipe 2 of the drain valve in case of the upward movement collides with the lock that can be unlocked. For complete water discharge the lock is unlocked.

Another possibility of activating the drain valve is to provide a low, harmless electrical voltage on the electrocoil 18 to thereby establish a field opposite to the magnet 17 and thereby activate or reduce the magnetic retention force. Depending on the case, the structure of the electrical control necessary for this is switched on or off the lock that can be unlocked for the partial water discharge.

The embodiment of the drain valve according to the invention is not limited to the embodiments described above. Rather, numerous variants are conceivable that also make use in case of a different configuration of the idea of the invention contained in the claims. Thus it is possible, for example, also a combination of mechanical and electrical activation. According to this, the electrical activation can be controlled, for example, by radio or by means of a button, which is advantageous in case of toilets for disabled persons, particularly in the case of the so-called barrier-free zone. Mechanical activation is in this case then a practical complement to electrical activation.

Claims (19)

1. Drain valve for a water discharge tank, with a housing (1) that is provided with a valve seat (1.4) that defines an outlet opening, an overflow pipe (2) that is provided at its end bottom of a seal (3) that acts together with the valve seat, an upper float (4) that can be adjusted in height with respect to the overflow tube, a lower float (5), and with an activation device to activate optionally a partial water discharge or complete water discharge, in which the lower float (5) is provided with a stop (7.1) in which the overflow pipe (2) sits in an elevated position, assigned to a complete water discharge by means of a projection (2.4) provided in the overflow pipe, in which the upper float (4) can be fixed by means of a height adjustment element (6) to the overflow tube (2) and is dimensioned so that it rises in the submerged state, after a short elevation of the overflow tube from its closed position, the overflow tube (2) by means of its ascending force optionally to a position assigned to a partial water discharge or complete water discharge, in which the upper float (4) maintains both in the case of a partial water discharge and in the case of a complete water discharge an adjusted position with respect to the overflow tube (2), characterized in that the lower float (5) is rotatably positioned in the housing (1) and is suspended through an arm (7) rotatably placed in the housing (1) in a chamber (8) configured in the housing, which has at least one upper inlet opening (8.1) and at least one lower outlet opening (8.2), the outlet opening being provided with an adjustment element for modifying the size of the opening, and a rib being formed with the outer side of the overflow tube (2) guide (2.5) running in the axial direction of the overflow tube to guide the arm (7).

2.

Drain valve according to claim 1, characterized in that the height adjustment element (6) has a bar-shaped section (6.1), in which at least one clamping element (2) is configured in the overflow pipe (2). 2.3) to which the bar-shaped section (6.1) of the height adjustment element can be attached.

3.

 Drain valve according to claim 1 or 2, characterized in that the overflow tube (2) has a groove (2.2) extending in the axial direction of the overflow tube, in which the height adjustment element (6) is placed in drag of form.

Four.

 Drain valve according to one of claims 1 to 3, characterized in that the chamber (8), in which the lower float (5) is suspended, is formed by the housing (1) and a partition wall (1.8) arranged inside of the housing.

5.

 Drain valve according to one of claims 1 to 4, characterized in that the projection (2.4), with which the overflow pipe sits in an elevated position, assigned to a complete water discharge in the stop, is formed with the rib guide (2.5) and is directed to the lower float (5).

6.

 Drain valve according to one of claims 1 to 5, characterized in that the arm (7) has an essentially U-shaped section (7.2) with two angled sides (7.3), in which elements are configured at the ends of the sides hinge (7.4) that can be attached to the housing (1).

7.

 Drain valve according to claim 6, characterized in that at least one of the sides (7.3) is configured a control edge (7.5) that slides along the guide rib (2.5) during a partial water discharge.

8.

 Drain valve according to claim 7, characterized in that the control edge (7.5) is configured in a projection on the side (7.3).

9.

 Drain valve according to one of claims 1 to 8, characterized in that the lower float (5) is connected so that it can be released with the arm (7).

10.

 Drain valve according to one of claims 1 to 9, characterized in that the lower float (5) has at least one chamber (8) open at the top.

eleven.

 Drain valve according to one of claims 1 to 10, characterized in that the upper float (4) has guide ribs (4.1) running vertically that are guided by guide ribs (1.5) running vertically on the inner side of the housing (1). ).

12.

 Drain valve according to one of claims 1 to 11, characterized in that at the upper end of the overflow pipe (2), gripping elements (2.1) are configured to raise the overflow pipe.

13.

 Drain valve according to claim 12, characterized in that the activation device for optionally activating a partial water discharge or complete water discharge comprises levers (10.1, 10.2, 10.3, 10.4) assigned to the gripping elements (2.1).

14.

 Drain valve according to claim 13, characterized in that the levers (10.1, 10.2, 10.3, 10.4) are rotatably placed on a support (9) that can slide as an overlapping part in the carcass (1) in shape drag.

10

fifteen.

 Drain valve according to claim 13 or 14, characterized in that the levers (10.1, 10.2, 10.3, 10.4) comprise two levers (10.1, 10.2) that can rotate independently of each other with housings for joining Bowden cables (11.1, 11.2), of which one lever (10.2) is connected with a lever (10.4) to activate a partial water discharge, while the other lever (10.1) is connected with a lever (10.3) to activate a

5 full water discharge. 16. Drain valve according to claim 15, characterized in that the lever (10.3) for activating a complete water discharge acts in conjunction with a two-arm angled lever (10.5), rotatably positioned on the support (9 ), at whose arm (10.51) the lever (10.3) is grasped to activate a complete water discharge and whose other arm (10.52) has a stop for a gripping element (2.1) 10 formed with the overflow tube (2), to delimit an upward movement of the overflow tube (2) caused by the upper float (4). 17. Drain valve according to one of claims 1 to 16, characterized in that the lower float (5) or an arm (7) connected therewith is provided with a lever (16), by means of the actuation of which the stop (7.1), in which the projection (2.4) of the overflow pipe (2) sits in the position assigned to a discharge of 15 full water, can be removed from the projection (2.4) that sits.

18.

 Drain valve according to one of claims 1 to 17, characterized in that the upper float (4) is provided with a magnet (17), an electro coil (18) attached to the housing (1) being assigned to the magnet (17).

19.

 Drain valve according to one of claims 1 to 18, characterized in that the housing (1) is

placed a lock that can be unlocked, by means of which an upward movement of the overflow tube (2) caused by the upper float (4) can be delimited.