CN106480948B - Discharge valve with a throttling element for the flushing water flow - Google Patents

Abstract

A discharge valve for a cistern of a sanitary appliance, in particular a toilet cistern, has a valve receptacle (8) in which a valve body can be guided in a displaceable manner, a valve body having a sealing surface or sealing means (10) which rests on the valve seat (3) in the closed state of the discharge valve and releases the discharge opening (3.2) in the open state of the discharge valve, and a valve seat (3) which delimits the discharge opening (3) upstream of the valve seat (3) in the flow direction of the flushing water, and the valve receptacle (8) is connected to the valve seat (3) by at least one vertical partition (6, 7) which delimits at least one inflow surface (E) in the flow direction of the flushing water. The present invention aims to provide a device which conveniently and reliably regulates the flow of flushing water from the cistern of a sanitary ware. This object is achieved by a discharge valve of the above-mentioned kind, which is characterized in that at least one flushing water flow throttling element (11) is adjustably arranged on at least one spacer (6, 7) and/or on the valve socket (8), and the effective size of the inflow surface (E) can be changed by rotating and/or displacing the at least one flushing water flow throttling element (11) relative to the spacer (6, 7).

Description

Discharge valve with a throttling element for the flushing water flow

Technical Field

The invention relates to a discharge valve for a sanitary ware cistern, in particular a toilet cistern, having a valve socket, a valve body with a sealing surface or sealing means, and a valve seat defining a discharge opening, the valve body being guided in the valve socket in a displaceable manner, wherein the sealing surface or sealing means rests on the valve seat in the closed state of the discharge valve and releases the discharge opening in the open state of the discharge valve, and wherein the valve socket is connected to the valve seat by at least one vertical partition, which defines at least one inflow area upstream of the valve seat in the flushing water flow direction.

Background

Such discharge valves are known (see for example EP 2141294B 1).

The strength of the flush water flow in a toilet or urinal is dependent on the height difference between the tank and the ceramic sanitary fixture, the flow resistance of the flush line connecting the tank and the ceramic sanitary fixture, and the flow resistance of the ceramic sanitary fixture. If the flow of the rinsing water is too strong, it causes water to spill from the sanitary ware onto the toilet seat and onto the floor next to the sanitary ware. In order to avoid splashing caused by an excessively strong flushing water flow, the flushing water flow is throttled if necessary. For this purpose, various restrictor rings with different diameters are usually inserted into the valve seat of the outlet valve in order to reduce the water flow cross section in the valve seat. It is complicated and inconvenient to use different throttle rings for adjusting the flushing water flow. Furthermore, individual throttle rings may be lost, which makes satisfactory regulation of the flushing water flow no longer possible.

Disclosure of Invention

The object of the present invention is to provide a device by means of which the flow of flushing water from the tank of a sanitary ware can be conveniently and reliably regulated.

This object is achieved by a discharge valve having the features of the invention.

The outlet valve according to the invention is characterized in that at least one flushing water flow throttling element is adjustably mounted on the at least one spacer and/or the valve socket, wherein the effective size of the inflow area upstream of the valve seat in the flushing water flow direction can be varied by rotating and/or displacing the at least one flushing water flow throttling element relative to the spacer.

The invention achieves that the flushing water flow can be regulated by means of preferably only one individually adjustable element. Since it is thus no longer necessary to place a restrictor ring with a different inner diameter into the outlet valve, it is much more convenient to adjust the flushing water flow with the outlet valve of the invention than with a conventional restrictor ring. Furthermore, the invention provides a cost advantage, since the invention requires only one additional component (flushing water flow throttling element) for the different flushing water flow adjustments.

The invention is based on the basic idea that the reduction of the flow cross-section does not have to be carried out at the outlet of the valve seat in order to reduce the flushing water flow strength, but that the reduction of the flow cross-section can also be provided at other positions within the valve seat.

Preferably, at least one flushing water flow throttling element of the outlet valve according to the invention is configured as a sleeve-like or hollow cylinder. The at least one throttle element can thus be combined very well with the housing shape or the valve socket shape of a proven outlet valve.

The adjustability of the flush flow restriction member of the present invention can be achieved in various embodiments. One embodiment consists, for example, in being able to vary the effective size of the inflow surface in stages, in particular in successive stop stages, by means of at least one flushing water stream throttling element. In this configuration, the effective size of the inlet face can be conveniently adjusted according to the particular type of sanitary ware and/or the particular height difference between the cistern and the sanitary ware. In this case, the installer can be provided with a table in which different models of the sanitary ware and/or different values relating to the height difference between the various water tanks and the sanitary ware are indicated, wherein the different sanitary ware and/or the height difference are assigned a specific adjustment or stop step of the flushing water throttle element. The installer can then retrieve from the table the adjustment or stop steps which are suitable for the respective ceramic sanitary fixture or for the respective height difference and accordingly suitably adjust the effective size of the outflow area by means of the at least one flushing water flow restriction element.

In this respect, an advantageous embodiment of the invention provides for: the spacer and/or the valve socket have at least one first stop element (retaining), wherein the at least one flushing water flow restriction element has at least one second stop element which interacts with the at least one first stop element. This allows a particularly reliable and at the same time easily adjustable dimensioning of the inflow area in the form of predetermined steps.

An alternative embodiment of the invention is characterized in that the effective size of the inflow surface can be varied steplessly by rotating or displacing the at least one flushing water flow restriction element. This embodiment has the advantage that the flushing water flow intensity can be changed very finely and thus an optimum adjustment of the flushing water flow intensity can be made. For this purpose, the at least one spacer and/or the valve socket preferably have a thread, for example an external thread, wherein the at least one flushing water throttle element then has a counter-thread or an internal thread which engages with the thread.

According to another embodiment of the outlet valve according to the invention, the at least one flushing water flow restriction element has at least one outwardly projecting projection on its outer side. The protrusion may serve as a gripping surface and facilitate the handling of the flushing water flow restriction element.

A further advantageous embodiment of the invention provides that: the at least one flushing water flow restriction element has at least one marking on its outer side, which marking indicates a movement and/or a direction of movement of the flushing water flow restriction element for reducing or increasing the inflow surface. The ease of operation of the at least one flushing water flow restriction element is further improved by such a marking.

From a constructional and functional point of view it is advantageous according to a further preferred form of construction of the invention that the valve socket has, above the at least one spacer, a sleeve-shaped or hollow-cylindrical section which is surrounded by the at least one flushing water flow throttling element and has a lower edge facing the valve seat, wherein the flushing water flow throttling element does not project beyond the lower edge at the location of the greatest inflow area.

A further embodiment of the outlet valve according to the invention provides that the adjustable mounting of the at least one flushing water flow restriction element is designed in such a way that the flushing water flow restriction element in its lowest position relative to the at least one spacer still permits or ensures a predetermined flushing water flow.

Drawings

The invention will be explained in more detail below with reference to the drawings showing a number of embodiments.

Wherein:

fig. 1 shows a front view of a water tank with a discharge valve according to the invention arranged therein in a closed state, in a vertical longitudinal section;

FIG. 2 shows a perspective view of the vertically sectioned cistern with discharge valve from FIG. 1;

fig. 3 shows an enlarged view of detail Z of fig. 1 in a front view;

fig. 4 shows an enlarged detail from fig. 3 in the open state of the discharge valve;

fig. 5 shows an enlarged detail from fig. 4 in a perspective view in the open state of the discharge valve;

FIG. 6 shows in side view the outlet valve socket part according to the invention from FIG. 5 with a valve seat and a flushing water flow throttling element in a raised position, in which the entire inflow opening is released;

FIG. 7 shows a cross-sectional view along cut line A-A in FIG. 6;

FIG. 8 shows the discharge valve socket member from FIG. 6 with a flushing water flow throttling element rotated approximately 90 relative to the position shown in FIG. 6;

fig. 9 shows in perspective view the flushing water flow restriction element from fig. 1 to 8;

FIGS. 10 and 11 show in perspective view and in axial section, respectively, another embodiment of a discharge valve socket part according to the invention with a valve seat and a flushing water flow restriction member in a position releasing the entire inflow opening;

FIGS. 12 and 13 show in another axial cross-section the outlet valve socket member from FIGS. 10 and 11, with the flushing water flow restriction member also in a position to release the entire inlet opening in FIG. 12 and in a downwardly rotated or adjusted position in FIG. 13 in which the inlet opening is about half-blocked; and

fig. 14 and 15 show in perspective and side views, respectively, another embodiment of a discharge valve socket member according to the present invention having a valve seat and a plurality of flushing water flow throttling elements that are adjustable independently of one another.

Detailed Description

In figures 1 and 2 there is shown a sectional view of a cistern 1 for a sanitary ware for a toilet. The bottom plate of the water tank 1 is equipped with a tubular discharge socket 2 into which a valve seat 3 of a discharge valve 4 can be inserted or has been inserted. For this purpose, the valve seat 3 has a pipe sleeve 3.1 which can be inserted into the discharge pipe sleeve 2. An annular groove is formed in the side of the pipe socket 3.1, into which a rubber-like elastic sealing ring 5 is inserted, which seals the pipe socket 3.1 of the valve seat 3 in a fluid-tight manner relative to the outlet pipe socket 2 of the water tank 1.

The valve seat 3 is connected to the valve socket of the outlet valve 4 by spacers 6, 7. The spacers 6, 7 are configured as web-like plates

And is mounted, preferably integrally formed, on the nipple 3.1 of the valve seat. The spacer has web sections 6.1, 7.1 which project radially outward from the pipe sleeve 3.1 and web sections 6.2, 7.2 connected thereto, which extend substantially perpendicularly. The lower part 8 of the valve socket is above the spacers 6, 7 and is essentially sleeve-shaped or hollow-cylindrical. The water level in the tank is indicated by W in fig. 1.

A valve body 9 is associated with the valve seat 3, which valve body is designed as an overflow tube and is guided in the valve receptacle in an axially movable manner. At its lower end, the valve body 9 has an annular sealing surface or seal 10. In the closed state of the outlet valve 4, a sealing surface or sealing means 10 rests on the valve seat 3 (see in particular fig. 3). In the open state of the outlet valve 4, the valve body 9 is lifted together with the sealing means 10 fixed thereto, so that the sealing means 10 release the outlet opening 3.2 defined by the valve seat 3 (see fig. 4). The arrows in fig. 4 indicate the water flow into the valve seat 3 or out of the socket 3.1 of said valve seat. The socket 3 has a sealing surface 3.3 facing the sealing device 10. Preferably, the sealing surface 3.3 is configured in the form of an annular projection projecting upwards.

The valve seat 3 is in the embodiment shown in the figures equipped with four spacers 6, 7 arranged substantially evenly distributed over the circumference of the valve seat 3. Instead of four spacers 6, 7, the valve seat 3 can also have only three, two or only one spacer, wherein in the case of a single spacer, the spacer is configured to be wider than each of the web- like spacers 6, 7 of the plurality of web- like spacers 6, 7.

A flushing water throttle element 11 is adjustably mounted on the spacers 6, 7 and the lower part 8 of the valve housing. By rotating and displacing the flushing water restriction element 11 relative to the spacers 6, 7 or the valve socket 8 (and the valve seat 3), the effective size of the inflow area E can be varied and thereby the flushing water flow flowing from the valve seat 3 through the nipple 3.1 when the valve is opened can be adjusted. The flushing water throttle element 11 is designed in the form of a ring, preferably essentially in the form of a sleeve or a hollow cylinder.

The spacers 6, 7 and the lower part 8 of the valve socket on the one hand and the flushing water throttle element 11 on the other hand have stop elements which correspond to one another. The stop element is embodied in the form of a row of grooves 12 extending substantially vertically and at least one positioning pin 11.1 corresponding to the grooves. The grooves 12 arranged in a row are formed on the outer side of the vertically extending web section 6.2 of at least one of the spacers 6 or in the edge region of the web section 6.2, while the positioning pins 11.1 are arranged on the inner circumferential surface of the flushing water throttle element 11.

Furthermore, outside of at least one further vertically extending web section 7.2 of the spacer 7, ribs or grooves 13 are formed which extend substantially horizontally and parallel to one another and to which at least one toothed element 11.2 formed on the inner circumferential surface of the flushing water throttle element 11 is assigned. The toothed element 11.2 is formed on the elastic section 11.3 of the flushing water throttle element 11. Said section 11.3 is defined in the flushing water throttling element 11 by a U-shaped slit 11.4 and may also be referred to as a spring tab or spring rod. The toothed element 11.2 prevents an unintentional release of the flushing water throttle element 11, since the flushing water throttle element 11 must be moved past the collar- like spacers 6, 7 by deflection outwards when the flushing water throttle element 11 is rotated.

Thus, in the exemplary embodiment shown in fig. 1 to 9, the height of the flushing water throttle element 11 and thus the effective size of the inflow area E can be adjusted in steps by releasing or rotating the flushing water throttle element 11, displacing it vertically and finally snapping it in (locking) in the opposite direction of rotation. In order to facilitate the handling of the flushing water restriction element 11, a gripping element, for example an outwardly protruding protrusion 14, is for example constructed on the outer side of the flushing water restriction element.

Furthermore, it can be seen in particular in fig. 5 that the flushing-water-flow restriction element 11 has markings on its outside which indicate the movement or direction of movement of the flushing-water-flow restriction element necessary for reducing or increasing the effective inflow surface E. The engagement or locking marks 15 and the release marks 16 are assigned to horizontal double arrows, while the plus and minus signs are assigned to the vertical double arrows 17 as an increase or decrease of the effective area of the inflow surface E.

The arrows in fig. 5 show the adjustment range of the maximum possible height of the flushing water throttle element 11. The adjustment range H may be, for example, in the range of 6 to 18 mm.

In the uppermost position of the flushing water throttle element 11, in which the effective dimension of the inflow area E is greatest, the flushing water throttle element 11 does not project with respect to the lower edge 8.1 of the sleeve-shaped valve socket part 8 facing the valve seat 3 (see also fig. 12). In the uppermost position of the flushing-water throttle element 11, said element is preferably completely covered by the sleeve-shaped valve socket 8.

The adjustable setting of the flushing water throttle element 11 is carried out in such a way that the flushing water throttle element 11 in its lowest position relative to the spacers 6, 7 maintains a predetermined distance Amin from the valve seat 3 (minimum distance) and thus allows a predetermined minimum flushing water flow (see fig. 13).

In contrast to the embodiment according to fig. 1 to 9, in which the flushing water throttle element 11 can be adjusted stepwise, fig. 10 to 13 show an embodiment in which the effective size of the flushing water throttle element 11 and thus the inflow surface E can be adjusted steplessly. For the stepless height adjustment of the flushing water throttle element 11, the spacers 6, 7 and the hollow cylindrical valve socket part 8 have an external thread 18, while the flushing water throttle element 11 has an internal thread 19 which engages with the external thread 18.

In fig. 10 to 12, the inflow surface E defined by the hollow-cylindrical valve socket 8, the spacers 6, 7 and the valve seat 3 is opened to the greatest possible extent, since the flushing-water throttle element 11 is arranged at the uppermost height position, in which it does not project beyond the lower edge 8.1 of the valve socket 8 facing the valve seat 3. In contrast, in fig. 13 the flushing water flow restriction element 11 is rotated downwards, so that the effective size of the inflow surface E is reduced by about 50%.

Fig. 14 and 15 show an embodiment which differs from the embodiment shown in fig. 1 to 13 in that several flushing water throttle elements 11', 11 ″ are mounted on the web- like spacers 6, 7 and the valve socket part 8, said elements being adjustable or displaceable vertically independently of one another. The flushing water flow restriction elements 11', 11 "are in this embodiment configured in the form of arc-shaped wall sections. The respective throttling element 11', 11 ″ or the vertical edge of the curved wall section engages in a form-fitting and frictional connection in a vertical guide, for example a guide groove, which is formed on the web- like spacers 6, 7. The effective size of the inflow surface E can be varied by displacing at least one flushing water throttle element 11', 11 ″ perpendicularly with respect to the spacers 6, 7. The flushing water flow throttling elements 11', 11 ″ can be arranged on the spacers 6, 7 in such a way that the respective throttling element can be displaced vertically in a stepwise or stepless manner.

Embodiments of the invention are not limited to the embodiments shown in the drawings. On the contrary, numerous variants are conceivable which fall within the scope of the invention even if they deviate from the form of construction of the exemplary embodiment shown.

Claims (6)

1. Discharge valve (4) for a cistern of a sanitary ware, having a valve receptacle (8) in which the valve body can be guided for movement, a valve body (9) having a sealing device (10) and a valve seat (3) defining a discharge opening (3.2), wherein the sealing device (10) rests on the valve seat (3) in the closed state of the discharge valve and releases the discharge opening (3.2) in the open state of the discharge valve, wherein the valve receptacle (8) is connected to the valve seat (3) by at least one vertical spacer (6, 7) which defines at least one inflow face (E) upstream of the valve seat (3) in the flushing water flow direction, and wherein a flushing water flow throttling element (11) is adjustably arranged on the at least one spacer (6, 7), characterized in that the flushing water flow throttling element is adjustable by a distance from the spacer (6), 7) The effective size of the inflow surface (E) can be changed by rotating and moving the flushing water throttle element (11) in successive stop steps, wherein the spacer (6) has at least one first stop element (12), wherein the flushing water throttle element (11) has at least one second stop element (11.2) which interacts with the at least one first stop element (12), and wherein the flushing water throttle element (11) has at least one outwardly projecting projection (14) on its outer side.

2. The discharge valve of claim 1, wherein said plumbing fixture tank is a toilet tank.

3. A discharge valve according to claim 1, characterized in that the at least one flushing water flow restriction element (11) is configured in the shape of a sleeve or a hollow cylinder.

4. Discharge valve according to claim 1, characterized in that the at least one flushing water flow restriction element (11) has at least one marking (15, 16, 17) on its own outside, which marking indicates a locking and release and/or direction of movement for reducing or increasing the inflow surface (E).

5. Discharge valve according to claim 1, characterized in that the valve socket has above the at least one spacer (6, 7) a sleeve-shaped or hollow-cylindrical section (8) which is surrounded by the at least one flushing water flow throttling element (11) and has a lower edge facing the valve seat (3), wherein the at least one flushing water flow throttling element (11) does not protrude with respect to the lower edge in a position in which the effective dimension of the inflow surface (E) is at its maximum.

6. Discharge valve according to claim 1, characterized in that the adjustable arrangement of the at least one flushing water flow restriction element (11) is configured such that a predetermined amount of flushing water flow is also allowed to pass in the lowest position of the flushing water flow restriction element itself in relation to the spacer (6, 7).

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