DE102012221043A1 - sanitary valve - Google Patents

Abstract

A sanitary valve contains a diaphragm valve with a control bore and a control piston cooperating with the control bore. The control piston and the control opening form a pilot valve. When the pilot valve is opened, the diaphragm valve opens under pressure control. The sanitary valve contains a stop to limit the opening of the diaphragm valve. This stop can be adjusted by the same actuating element with which the pilot valve and thus also the diaphragm valve can be opened and closed.

Description

The invention is based on a sanitary valve with a diaphragm valve. Diaphragm valves have the advantage that they require a low operating effort due to the pilot valve, which is why they are generally used in electrically operated valves.

It is already known an electrically operated diaphragm valve, in which the control bore can be opened and closed by means of an electric drive. The maximum stroke of the diaphragm is limited by a stop which can be adjusted in position by means of a screwdriver, independently of the switching on and off of the valve ( EP 0 253 948 B1 ).

The invention is based on the object to provide a manually operable easily adjustable valve in which the user can change the flow rate in addition to switching on and off with the same handle.

To solve this problem, the invention proposes a sanitary valve with the features mentioned in claim 1. Further developments of the invention are the subject of dependent claims.

In a further development of the invention can be provided that a common actuator for movement of the control piston and the movement of the stopper is provided. Such a common actuator facilitates and simplifies the operation of a sanitary valve.

For switching on and off the diaphragm valve, the invention proposes in a further embodiment, to provide a step-through gear which moves the control piston from the first to the second position by axial pressure on the actuating element, and by also an axial pressure on the actuating element in the same direction moves the control piston back from the second to the first position. Such indexing gears are generally known in various fields of technology, so that they will not be described in detail here.

To change the stop, which determines the maximum opening position of the diaphragm valve, a rotational movement can be provided in a further embodiment of the invention.

It may be provided in a development that an operating knob is present, which turns on by pressing the valve and turns off and moves by turning the stop, so determines the amount of flowing out of the sanitary valve water.

When using a set by axial pressure on the actuating element in progressing gear transmission can be provided in a further embodiment of the invention that the two positions of the diaphragm valve, corresponding to the two positions of the control piston, each assigned a different axial position of the actuating element. For example, when the valve is open, the actuating element is arranged axially closer to the valve housing and further away from the valve when the valve is closed. For the user, this means that when the actuating element is pressed in, the valve is switched on and the valve is closed when the actuating element is not pressed in.

In this way, the user can visually and haptically recognize the switching state of the valve.

If a rotational movement of the actuating element is used for adjusting the stop which determines the maximum opening position of the valve and thus the flow rate, it can be provided that a threaded thread for performing this rotational movement, that the axial position of the actuating element also changes. However, this change is then a continuous change in position as opposed to the only two-position change in turning the valve on and off.

In a further embodiment of the invention, the actuating element may be formed together with the transmission for movement of the control piston as a structural unit which is closed in itself.

In a further development of the invention it can be provided that the structural unit, which has the actuating element and the gearbox for moving the control piston, also contains the stop for limiting the movement of the diaphragm.

In a further development of the invention can be provided that the assembly that contains the actuator and the gearbox for moving the spool, is used as a unit in a valve core, with which it is connected by a thread. As a result, it can be achieved that the actuating element, by twisting, unscrews the assembly unit more or less far into or out of the valve insert. In this way, the stop to limit the movement of the membrane can be adjusted.

In a further development of the invention can be provided that a handle is connected to the actuator. If this handle is firmly connected to the actuator, can he the position of the actuating element and thus the position of the control piston are detected.

However, it is also possible that the handle rotatably connected to the actuating element, but axially displaceable, is connected. In this case, it can be ensured that upon rotation of the actuating element for changing the flow cross-section, the handle is held in a fixed position, for example by a spring, although the actuating element changes its axial position.

In a further embodiment of the invention, the handle can be connected via a thread with the actuating element. This development can lead to that during the rotation of the actuating element, which changes its axial position due to its own thread relative to the valve insert, the handle itself does not or only partially participates in this movement. In particular, it can be provided that the thread between the handle and the actuating element has the same pitch as the thread between the actuating element and the valve core. As a result, the handle maintains its axial position when adjusting the flow cross-section and thus the amount of water flowing through the valve. At the same time, however, the handle follows upon depression of this movement, so that the state of the valve, whether it is turned on or configured, can be recognized at the position of the handle.

In a further development it can be provided that the membrane is designed as a ring element which is fixed in the region of its outer edge in the valve insert, while it is fastened in its central region to a rigid valve body which contains the control bore and which also with the stop for limiting the movement of the membrane interacts.

It can be provided that the control piston is acted upon by a magnet, so that simplifies the sealing of the individual parts of the sanitary valve proposed by the invention.

According to the invention, it may be provided that the switching state of the valve can be recognized optically and haptically by a different position of the handle.

Further features, details and advantages of the invention will become apparent from the claims and the abstract, the wording of which is incorporated by reference into the content of the description, the following description of preferred embodiments of the invention and with reference to the drawing. Hereby show:

1 an axial section of a first component of the valve proposed by the invention;

2 an axial section through a the component of 1 containing valve core;

3 a cross section through the component of 2 ;

4 an axial section through the sanitary valve according to the invention;

5 a first cross section through the valve of 4 ;

6 a second cross section through the valve of 4 ;

7 a third cross section through the valve of 4 ;

8th one of the 4 corresponding axial section in a second embodiment of the invention;

9 a cross section along line IX-IX in 8th ;

10 a cross section along line XX in 8th ;

11 a the 4 and 8th corresponding axial section through a third embodiment of the valve proposed by the invention;

12 a cross section along line XII-XII in 11 ;

13 a cross section along line XIII-XIII 11 ;

14 the outer view of a sanitary fitting with a valve according to the invention;

15 the outer view of another example of a sanitary fitting with a valve according to the invention;

This in 1 shown in longitudinal section component forms the lifting unit, with the help of the control piston 1 between his two positions can be moved. The lifting unit includes an upper housing part 2 , which is approximately pot-shaped and its lower open side through the lower housing part 3 closed is. The lower housing part 3 is with the upper housing part 2 connected by a snap connection. In the interior of the lifting unit is a probe element 4 mounted axially displaceable, which consists of an upper opening of the housing upper part 2 partially protruding. The axial Displaceability is designed so that the element 4 can not be rotated relative to the upper housing part. You can do this on the rib 5 recognize that in a corresponding axial groove of the opening of the housing top 2 recorded and conducted.

At its upper end contains the probe element 4 a hollow with a thread 6 Provided screw attachment 7 ,

In the interior of the sleeve-like probe element 4 is a sleeve-like holder 8th arranged, which in its lower disseminated end portion a magnet 9 supports.

The lower housing part 3 the lifting unit is from a plate 10 formed on its directed into the interior of the lifting unit inside a cylindrical approach 11 has, which is closed at its end. On the opposite outside, this approach is in another approach 12 continued.

The interior of both approaches 11 . 12 is cylindrical and serves to accommodate the already mentioned control piston, which at its pointing out of the interior free end of a cover 13 made of elastomeric material. The control piston 1 has a blind hole in which a compression spring 14 is arranged, located on the closed end of the approach 11 supported.

At its free end facing away from the control piston 1 with a common edge 15 provided with the magnet 9 interacts.

In the interior of the holder 8th is another compression spring 16 housed, located on the front of the neck 11 of the housing base 3 on the one hand and at the opposite end of the holder 8th supported.

Between the bracket 8th and the probe element 4 an indexing device is formed, which is constructed from a plurality of cooperating oblique elements. Moving the probe element 4 in 1 down leads for geometrical reasons also to a shift of the holder 8th and due to the mentioned inclined surfaces to a rotation, so that when releasing the probe element, the holder 8th remains in a shifted position. At a second pressure on the probe element 4 becomes the holder 8th shifted by a small amount forward and simultaneously twisted, so that when subsequently releasing the probe element 4 the holder 8th returns to their original position.

At the bottom of the plate 10 of the housing base 3 is a stop element 17 formed, which is radially with respect to the approach 12 extends. The outside of the housing top 2 has a thread 18 on.

The following now 2 shows a valve insert that can and should be used in a receptacle of a valve body. This valve core contains a lifting unit as shown in 1 has been shown and described. The valve insert contains a top part 20 with which an adapter element 21 connected by a snap connection. Inside the adapter element 21 the actual diaphragm valve is housed.

The lifting unit is with its external thread 18 screwed into an internal thread of the upper part. By turning the lifting unit, this can more or less far in the upper part 20 be screwed. In this twisting, the in 1 in 2 to be seen stop element 17 with twisted.

The adapter element 21 contains an inlet 22 for the water to be dispensed through the sanitary valve. It also contains an outlet 23 , Between both the diaphragm valve is arranged. Through to the outlet 23 leading water supply is a valve seat 24 formed, which is arranged in a plane perpendicular to the longitudinal axis plane.

An annular deformable membrane 25 is with its outer circumference between the adapter element 21 and a mission 26 established. The membrane 25 is with its inwardly surrounding a central opening surrounding area with a valve closing body 27 connected, which has a through hole 28 having. This bore is the control bore of the diaphragm valve. At a point not visible in the figure leads through the membrane 25 a balancing bore from the inlet 22 in the opposite side of the membrane 25 formed pressure chamber 29 ,

Through a central opening of the insert 26 grips the approach sealed 12 of the housing base 3 the lifting unit. The valve closing body 27 points to his the control piston 1 facing side on an extension through which the control bore 28 passes. At the separation point between the upper part 20 the valve core and the adapter element 21 is in the shell 20 a stopper disc 30 housed, which together with the rotatable stop element 17 to a limitation of the rotational movement of the upper housing part 2 the lifting unit leads. The interaction of these two elements 17 . 30 is on average the 3 indicated.

The operation of the valve can already be determined by the 2 be explained. The 2 shows the valve in the closed state. The control piston 1 closes the control opening 28 , That through the inlet 22 at the inlet side of the membrane 25 arriving water also passes through the mentioned equalization bore in the pressure chamber 29 on the opposite side of the membrane 25 , As the area where the water is at the back in the pressure room 29 on the membrane is greater than the area on the opposite side, the diaphragm valve remains closed. Will now by pressure on the probe element 4 the holder 8th with the magnet 9 switched on and by the spring 16 pushed upward, so follows the movement of the magnet 9 the control piston 1 and opens the control hole 28 , As a result, the pressure difference is removed and the water opens by its pressure the valve, by the membrane with the closing body 27 from the valve seat 24 takes off. The closing body 27 then comes to rest on the face 31 of the approach 12 which limits his progress. Press the button again 4 can the spool 1 back to the mouth of the control bore 28 be placed so that the valve then closes again.

By turning the upper housing part 2 this is more or less in the shell 20 the valve insert is screwed in, so that the axial position of the end face 31 of the approach 12 changes. In this way, the maximum opening position of the diaphragm valve and thus the amount of effluent water can be changed.

The 4 now shows the installation of the valve core of the 2 in a recording of a sanitary fitting housing 32 ,

About a driver 33 is a handle element 34 rotatably with the upper housing part 2 connected to the lifting unit. With the handle element 34 is the handle cover 35 rotatably connected. The grip element 34 is additionally via a lock nut 36 with the threaded neck 7 of the probe element 4 connected. This results in that by rotating the handle on the handle cover, the lifting unit is screwed more or less far into the valve insert arranged in the sanitary fitting, so that the position of the front end 31 of the approach 12 changed. A pressure on the handle leads to an actuation of the lifting unit in the manner already described.

As 5 shows in a section along line VV the engagement of lugs on the inside of the handle cover 35 in notches of the handle 34 and thus the connection in the direction of rotation.

The 6 shows in a section along line VI-VI, the positive connection between the handle element 34 and the driver 33 in the direction of rotation.

7 shows in a further step, the positive connection between the driver 33 and the upper housing part 2 the lifting unit.

In the embodiment of the invention described so far, the axial position of the handle changes 34 and its handle cover 35 when turning continuously, and discontinuously when switching on and off the diaphragm valve.

In the embodiment now described the 8th to 10 is the upper housing part 2 extends the lifting unit upwards and has a hexagonal outer shape. Also the top 20 the valve core is extended upward and has an inwardly directed bead at its upper end 40 on. With the handle 41 is rotatably on the inside a driver 42 connected, which is approximately cup-shaped and between the outer wall of the upper part 20 and the upwardly extended wall portion of the housing top 2 intervenes. Due to the hexagonal shape of the upper housing part 2 and the complementary shape of the driver 42 So there is a positive connection between the driver 42 and the upper housing part 2 the lifting unit. Between the inside of the driver 42 and the upper housing part 2 is a compression spring 43 arranged. The apron-like wall section 44 of the driver 42 is in this way telescopically between the upper part 20 the valve insert and the upper housing part 2 ' the lifting unit out.

If the lifting unit is turned with respect to the valve insert by means of the handle, the handle remains 41 in the through the bead 40 and a corresponding counter bead 45 formed position. The operation of the lifting unit for switching on and off of the diaphragm valve is still possible, but after releasing the handle 41 this one returns to the in 8th shown position back. A user can no longer recognize at the position of the handle whether the valve is on or off.

The 9 shows the rotatable connection between the handle 41 and the driver 42 in a cut while the 10 the rotationally fixed connection between the upper housing part 2 the lifting unit and the driver 41 shows.

In the in the 11 to 13 illustrated embodiment is on the outside of the upper part 20 the valve insert a fixing sleeve 50 attached, the axially displaceable but rotationally fixed to the upper part 20 connected is. The non-rotatable connection, which is achieved by a positive connection, you can, for example, the 13 remove. There is too see that on the inside of the fixing sleeve 50 two ribs 51 are molded into corresponding grooves in the outside of the shell 20 intervention.

The handle 52 , which is again pot-shaped, has on the inside of its end wall a hexagonal approach 53 in the hexagonal opening 54 of the probe element 4 intervenes. As a result, a positive connection in the direction of rotation between the handle 52 and the probe element 4 given.

The fixing sleeve 50 is form-fitting with a contact nut 55 connected, both in the direction of rotation and in the axial direction. The contact mother 55 is with the on the outside of the threaded neck 7 of the probe element 4 screwed existing thread. The thread is a double thread that has the same pitch as the thread 18 on the outside of the housing top 2 the lifting unit.

When pressing on the handle 52 becomes the feeler element 4 moved down so that it turns on and off in the same manner as in the previous embodiments, the diaphragm valve. Similar to the embodiment in FIG 4 remains in the on position of the handle 52 in the depressed position.

When twisting the handle 52 is about the hexagonal shape of the neck 53 and the opening 54 the feeler element 4 twisted, because of the positive connection and the upper housing part 2 twisted, so that the lifting unit in the upper part 20 ' screw in the valve insert. At the same time, however, the contact mother is screwing 55 on the outside of the threaded neck 7 of the probe element 4 up. Because the thread of the contact nut 55 and the thread 18 on the outside of the housing top 2 the lifting unit have the same pitch, the axial position of the handle remains unchanged during rotation.

The 14 shows an example of a kitchen mixer with a horizontally arranged cylindrical tube 60 trained sanitary fitting and a spout 61 at the bottom of the tube 60 , A handle 62 for opening and closing the spout 61 and for regulating the discharge amount is at the axial end side of the tube 60 arranged. The handle 62 can be twisted to determine the amount of leaking water, and it can be depressed to open and close. Because of this, is between the head of the handle 62 and the front edge of the tube 60 in the illustrated state, there is a distance that signals that the valve is switched off.

15 shows another example of the use of a sanitary valve according to the invention, in which the valve in a branch 63 one also as a cylindrical tube 64 trained sanitary fitting is housed. The operation is again by means of a handle 65 that can be twisted and crushed. In addition, at the junction 63 the sanitary fitting still an adjustment 66 arranged for adjusting the temperature.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0253948 B1 [0002]

Claims (13)

Sanitary valve, with 1.1 a water inlet ( 22 ), 1.2 a water outlet ( 23 ) and 1.3 a diaphragm valve arranged between these, the 1.4 a valve seat ( 24 ), 1.5 a compensation opening, 1.6 a control opening ( 28 ) and 1.7 with the control port ( 28 ) cooperating control piston ( 1 ), which has 1.8 two stable positions, 1.9 in one of which it controls the control ( 28 ) and 1.10 in whose other he closes the control aperture ( 28 ) with 1.11 an adjustable stop to limit the movement of the membrane ( 25 ). Sanitary valve according to claim 1, having a common actuating element for moving the control piston and for moving the stop. Sanitary valve according to Claim 1 or 2, in which, for movement of the control piston ( 1 ) a forward gear is provided, which by axial pressure the control piston ( 1 ) moved from the first to the second position and by an axial pressure in the same direction from the second to the first position. Sanitary valve according to one of the preceding claims, in which a rotational movement is provided for the movement of the stop. Sanitary valve according to claim 3 or 4, wherein the actuating element with the gearbox to movement of the control piston ( 1 ) is formed as a structural unit. Sanitary valve according to claim 5, wherein the structural unit containing the actuating element and the gear includes the stop for limiting the movement of the diaphragm. Sanitary valve according to claim 5 or 6, wherein the assembly containing the actuating element and the gear is inserted into a valve insert and is connected thereto by a thread. Sanitary valve according to one of the preceding claims, wherein the handle is connected to the actuating element. Sanitary valve according to claim 8, wherein the handle is rotatably connected to the actuating element. Sanitary valve according to claim 9, wherein the handle is connected via a thread with the actuating element, which preferably has the same pitch as the thread with which the structural unit is connected to the valve core. Sanitary valve according to one of the preceding claims, in which the membrane ( 25 ) is formed as a ring element and is arranged with its central opening on a rigid element which the control opening ( 28 ) and which cooperates with the stop. Sanitary valve according to one of the preceding claims, in which the control piston ( 1 ) by a magnet ( 9 ) is acted upon. Sanitary valve according to one of claims 3 to 12, wherein the actuating element for each of the two positions of the control piston ( 1 ) has a different axial position.

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