CH647058A5 - Valve for sanitaerarmaturen. - Google Patents

Description

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PATENT REQUIREMENTS Spindle (39, 59) is held free of play by a spring ring (44a, 64a) acting between a spindle shoulder and an end face of the guide housing (34, 54).

1. Valve for sanitary fittings, with an inlet (la)

and a valve body (1) 5 having an outlet connection (le)

The object of the invention, which is arranged and has two ceramic disks (6, 8) that can be rotated relative to one another and is provided with passages (7, 9), is a valve for sanitary fittings, a closing unit and, with the purpose of regulating the quantity, rotatable with an actuating spindle having an inlet and an outlet connection, characterized in that the actuators of the valve body, which are arranged and have two screw spindles (19, 39, 59, 79) that are rotated relative to one another, and their ceramic disks, which are provided on the valve body (1) and are provided with passages, are screwed on (14, 14, 54, 74) ) are designed as a removable closing unit and with a bare actuating unit (3) which can be rotated for the purpose of quantity regulation, while the one actuating spindle.

Closure unit (2) having a housing (4) by means of an

The threaded connector (4a) provided in the housing (4) is screwed into the microdisk and spindle in a mostly two-part common inlet connector (la) of the valve body (1) and 15 men housing are arranged, the structural unit thus formed with the actuating unit (3) removed. by means of a thread in the usually provided thread in the water

Housing end sleeve (12, 52) of attachable tool can be screwed out of the water inlet connector of the valve body so that it can be screwed out. is. This also applies to valve designs with other valve elements

2. Valve according to claim 1, characterized in that the ten as the ceramic disks provided here for a long time on a seal (5) resting ceramic disc (6) 20 known summarizing movable valve element, fixed and the other on the latter Kera seat and spindle in a common housing and interchangeable micro disk (8) can be rotated to a limited extent, the ceramic disks having a seibares insertion of this unit in the valve body (6, 8) with the interposition of a slide ring (11) due to the mostly disadvantage that alone for replacing a housing (4) tightly fitting end sleeve (12, 52) with no axial play Seal in the area of the actuating spindle the whole assembly is held in the housing (4). 25 unit are removed from the valve body and then the second

3. Valve according to claim 2, characterized in that the lige housing must be taken apart, so that relative rotation and positioning of the housing (4) to get access to the seal to be replaced. In addition, and the end sleeve (12, 52) of the closing unit of the housing edge, the removal of the structural unit requires that the inner part and the end sleeve (12, 52) have a corresponding serum line to the valve body. External teeth (12a) are also likely to be present. 30 have been proposed to insert the ceramic disks into a

4. Valve according to claim 2 or 3, characterized in that the guide housing-independent housing of a locking unit that the spindle (19, 39, 59, 79) of the actuating unit (3) insert one and rotatably but axially movable in the partially cylindrical extension (19c) insert a driver cam inlet fitting of the valve body, with the

(21), which loosely engages in an eccentric recess (10) of the spindle which, in order to hold the locking unit in its axially limited rotatable ceramic disc (8), is used on the working position. By means of a corresponding Relatiwerdre spindle extension (19c), a sound-absorbing impact of the disks of the closing unit allows the valve-closed disk (22, 62) to be seated in a rotationally fixed but axially displaceable manner. and then the spindle with its guide housing

5. Valve according to claim 4, characterized in that the are removed. It turns out, however, that the axial baffle plate (22, 62), which is not made of plastic, can be flung out on its side, which is more fixed, by the side facing the more closed ceramic plates (6, 8) with pegs or 40 water pressure; Ribs (22b) is provided. here too, the water inflow must first be shut off.

6. Valve according to claim 4 or 5, characterized in that the invention is based on the fact that one of the quantities - that the end sleeve (12) of the closing unit (2) has a projecting part of the wall that protrudes beyond the regulation and serves as a relatively wear-resistant ceramic part Although the closing unit containing the walls should be exchangeable, it has a strength which is provided with a window (13) which extends over a circumferential angle 45, but which has an exchange of seals in the spindle area of approximately 150 °, which is required more often and therefore without Impairment of the valve passage (7,9) of the closing unit (2) with the opening of the closing unit and without switching off the water supply (lc) of the valve body (1) is connected and should be possible to the valve body easily and at any time, with which a collar having a throttle edge (23) This object has been achieved by the invention in that the (22a) of the closing sleeve (12) protruding baffle plate 50 actuating spindle and its screwed to the valve body

(22) cooperates in such a way that when the valve is closed, the guide housing (22a) designed as a detachable actuation unit closes the window (13) before the passages (7, det), while the housing unit-closing unit 9) of the ceramic disks ( 6,8) are completely out of alignment by means of a threaded connector provided on their housing. is screwed into the inlet socket of the valve body and at

7. Valve according to one of claims 1 to 6, characterized in that the actuating unit is removed by means of a part (14b, 34a, 80) of the guide housing (14, closing sleeve-attachable tool from the valve body (34, 74)). of the actuating unit (3) can be unscrewed on the end of the end.

sleeve (12, 52) rests and thus a spindle, which is caused by turning, is formed as a unit,

axial loosening of the clamping unit prevented. can their individual parts also during or after removal

8. Valve according to one of claims 1 to 7, characterized- 60 this unit does not easily unfold; shows that the spindle (19) is used axially without play in the guide disassembly of the actuating unit itself is only used in rare housings (14). Cases required, while the probably most in need of replacement

9. Valve according to one of claims 1 to 7, characterized in that the valve body and guide housing are characterized in that the spindle (39, 59, 79) removes the actuating unit from the screw-in connector without further dismantling (34a) of the guide housing (34, 54) , 74) can be exchanged in this 65 beit. By fixing the closing unit between the guide housing and the closing unit (2) without play in the valve body by means of a thread, the closing unit is held. axially correct even after removing the actuation unit

10. Valve according to claim 9, characterized in that the freely secured; at by appropriate rotation adjustment of the

Ceramic disc closed valve therefore eliminates the need to shut off the water supply when the actuator is to be removed.

The invention is explained below, for example, with reference to the accompanying drawing.

The drawing shows:

1 is an axial section of an embodiment of the valve in the open position,

2 shows the units removed from the valve body according to FIG. 1,

3 and 4 each show a cross section along the line A-A in Fig. 1 in the open or pre-closing position of the valve,

Fig. 5, 6 and 7 cross sections through the locking unit according to the line B-B or C-C or D-D in Fig. 2, and

8, 9 and 10 on a smaller scale each have a variant of FIG. 1.

In the drawing, 1 is the usual T-shaped valve body of a sanitary fitting, with a water inlet connection la, with a coaxial installation connection lb and a right-angled water outlet connection lc. Inlet spigot la and installation spigot lb are provided with an internal thread.

The upper part assigned to the valve body of the example according to FIGS. 1 to 7 consists of two structural units which are not firmly connected to one another, namely the closing unit 2 and the actuating unit 3. The closing unit 2 has a cylindrical housing 4 with an inlet connection 4a which is offset both inside and outside. A first ceramic disk 6 is seated in the housing 4 with the interposition of a seal 5, the circumference of which is adapted to the inner circumference of the housing 4 which deviates from the cylindrical shape by a wall thickening 4b; thereby the ceramic disc 6 is secured against rotation in the housing 4 (Fig. 7). The ceramic disk 6 has, on the side opposite the housing wall thickening 4b, a passage 7 having an approximately crescent-shaped outline; the shape of the passage does not, however, play an essential role. A second ceramic disk 8 is located on the ceramic disk 6 in the housing 4 and has a passage 9 which is congruent with the passage 7 of the ceramic disk 6. As shown in FIG. 6, the diameter of this ceramic disk 8 corresponds to the inner radius of the housing, which is reduced in the region of the housing wall thickness 4b, except for a circumferential cam 8a. It is thereby achieved that the ceramic disk 8 can rotate through an angle of rotation of approximately 180 ° in the housing 4, as a result of which its passage 9 can be brought completely out of alignment with the passage 7 of the ceramic disk 6. The upper side of the ceramic disk 8 has, as shown in FIG. 5, an approximately rectangular recess 10 which limits the passage 9 near the ax. A sliding ring 11 is located on the ceramic disk 8. The upper end of the closing unit 2 is formed by a sleeve 12 which is connected to its lower one an external toothing 12a is inserted into the neck part of the housing 4 which is enlarged here and provided with a suitable toothing. The end sleeve 12, which is offset on the face side, sits on the outside on the inner shoulder 4c of the housing 4 and touches the inside of the slide ring 11. As a result, the ceramic disks 6, 8 are held in the housing 4 without axial play, without the rotational mobility of the ceramic disk 8 being impeded. By caulking or the like. The sleeve 12 is so firmly connected to the housing 4 that a separation is no longer possible. The ring portion of the sleeve 12 which is stuck in the housing 4 is formed on the inside as a polygon 12b for the attachment of a tool. The thin-walled ring section of the sleeve 12 lying above this ring section is provided with a window 13 which extends over a circumferential angle of approximately 150 °. The sleeve 12 is inserted into the housing 4 in such a way that the window 13 lies on the same side of the axis a of the ceramic disks 6, 8 as the passage 7 of the fixed ceramic disks 6. The closing unit 2 formed in this way is inlet connector 4a with its external thread in the

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Internal thread of the inlet connection la of the valve body 1 screwed in; this is possible by means of the tool acting on the polygon 12b.

The actuating unit 3 has a guide housing 14 which, following an approximately central annular flange 14a, has a screw-in connector 14b with an external thread which fits into the internal thread of the installation connector 1b of the valve body 1. An O-ring 15 is inserted between flange 14a and socket 14b. The bore of the guide housing 14 is narrowed at the end of the screw-in socket 14b by an inner ring flange 16 and expanded at the opposite end and provided with an internal thread 17. The housing section having the internal thread 17 is also provided with an external polygon 18. An actuating spindle 19, which is rotatably guided in the housing bore and is sealed to the outside by an O-ring 20, projects with its stepped shaft 19a out of the housing part having the thread 17 and at the end carries the spindle head 19b intended for attaching a rotary knob. The other, from the annular flange 17 of the guide housing 14 protruding end of the spindle is provided with an approximately semi-cylindrical extension 19c, which ends in a driver cam 21. The cross section of this driver cam 21 is matched to that of the depression 10 of the ceramic disk 8 such that the cam 21 can engage in this depression 10 with play. On the approximately semi-cylindrical extension 19c of the spindle 19 sits a baffle plate 22 provided with a corresponding opening, which is provided with a downwardly projecting collar 22a over part of its circumference. The outer diameter of the baffle plate 22, which is expediently made of plastic on its underside with damping pins (or ribs or the like) 22b, is adapted to the inner diameter of the upper part, provided with the window 13, of the end sleeve 12 of the closing unit 2, the circumferential length and height of the Collar 22a are slightly larger than the corresponding dimensions of the window 13; the collar 22a is provided with a throttle edge 23 inclined to the axial direction. The spindle 19, which is inserted into the guide housing 14 from the side provided with thread 17, is held in the housing 14 by a safety bush 24 screwed into this thread 17.

As shown in FIG. 1, when assembling the valve described, the closing unit 2 is first screwed in as mentioned, whereupon (with the bush 24 not yet firmly tightened) the actuating unit 3 is inserted by screwing the screw-in connector 14b into the connector 1b of the valve body 1, until the screw socket 14b abuts the end edge of the sleeve 12. The spindle 19 still lying loosely in the guide housing 14, which does not necessarily assume the rotational position required for the engagement of its driver cam 21 in the recess 10 of the ceramic disk 8, does not prevent the only loosely, i.e. baffle plate 22 engaging axially displaceably on the extension 19c engages in the sleeve 12. Now, by rotating the spindle 19, the driver cam 21 is aligned with the recess 10 of the ceramic disk 8 and brought into engagement therewith; then the bushing 24 is pulled until it rests on the shoulder of the spindle 19 created by the stepped spindle shaft 19a.

It goes without saying that by rotating the spindle 19 over the driving cams 21, the ceramic disk 8 is also rotated to the extent limited by the cams 8a (FIG. 6) or the wall thickening 4b of the housing 4. If, for example, the ceramic disk 8 is rotated clockwise from the aligned position of the two disk passages 7, 9 (valve open) in FIG. 3, this results in the valve being completely closed with increasing rotation up to a maximum angle of rotation of 180 °. However, since the baffle plate 22 is also rotated with the spindle 19, the collar 22a also increasingly closes the window 13 of the sleeve 12 with its preceding throttle edge 23, the arrangement being such that this window 13 and

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So that the outlet-side valve passage is already closed at a spindle 34 and the rotation of the spindle shaft 39a by approximately 150 ° (FIG. 4), a spring ring 44a is inserted into the open shoulder of the spindle 39. Passage 9 of the ceramic disk 8 is not yet completely closed

Alignment with the passage 7 of the fixed ceramic disk 6 In the variant shown in FIG. 9, the housing 4 is the one that has come. Such a pre-setting of the water flow rate 5 closing unit 2 containing ceramic disks 6, 8 by means of a closing unit 2 on the outlet side has proven to be particularly advantageous. with the housing end face flush sleeve 52 closed

Thanks to the high wear resistance of the ceramic discs; Correspondingly, the baffle plate 62 is also without a collar with 6,8, and its replacement is formed only after a relatively long operating time. borrowed from this simplified variant. In this case, the actuating unit 3 is first activated by none of the valve closings preceding the inlet side.

Unscrewing the guide housing 14 removed, then provided by means of 10 pre-setting on the running side. The cohesion between a suitable tool to be attached to the polygon 12b, the spindle 59 and the guide housing 54, which can be inserted from below, is screwed out of the locking unit 2 and, as a whole, the actuating unit 3 can also be replaced by a snap ring 64. Of course, the water supply to the spindle shaft 59a must be guaranteed. With built-in actuator

Valve should be shut down beforehand. However, supply unit 3 is to be replaced more often, as is known, the O-rings 15, which are supported on a spindle collar and which seal the upper part to the outside, have a spring ring 64a, which is the end face of the screw-in connector 54a of FIGS. Thanks to the design described, it suffices to reach under this guide housing 54 for axial play

Purpose by appropriate rotation of the spindle 19, the valve spindle 59.

to close, after which the actuating unit 3 is removed and in the variant shown in FIG. 10, the closing unit 2 of which corresponds to that of FIG. 9 after the seal (or seals) has been replaced, the screw-in connector 74a can be screwed. The simplicity of the 20 guide housings 74 required for this (which, moreover, corresponds to the guide housing 34 handles. The variant according to FIG. 8 corresponds) with axial projections

In the variant shown in FIG. 8, the 80 differs. These projections 80 lie when the actuator is installed.

Closing unit 2 is not that of the example described above. supply unit 3 on the end edge of the housing 4 or the sleeve 52, on the other hand, the guide housing 34 of the actuating unit of the locking unit 2 3 corresponding to the variant according to FIG. 9 for installation of the spindle 39 from below, i.e. from the 25 on. This resting of the non-rotatable guide housing screw socket 34a ago formed. In order to remove the actuating unit 3, which in the embodiments according to actuating unit 3 also prevents the spindle FIGS. 1 and 8 from falling out, prevents e.g. To avoid turning the 39, there is a snap ring 44 on the spindle shaft 39a or under the influence of vibrations or the like.

used. When the actuating unit 3 is installed, the closing unit 2 is undesirably detachable. Here too

Circlip 44 at a distance above the guide housing 34, so that the cohesion of the actuating unit 3 by a detonation in this case ensures the spindle 39 with its driver cam 41 ring 84 on the shaft 79a of the spindle 79. The correct insertion into the recess 10 of the ceramic disk 8 allows an inner flange 76 of the guide, which rests on the spindle shoulder, before the housing 34 prevents the undesired large axial play of the Spin-1 from being screwed into the fitting lb of the valve body housing 74. In order to avoid undesired axial play of the spindle 79. Here, too, by the way, only a simple one to avoid the noise damper 39 when the actuating unit 3 is installed, is a baffle plate 62 serving as mung, as in the case of the one shown in FIG. 9, between the front inner flange 36 of the Guide housing variant, provided.

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2 sheets of drawings