WO1991016560A2

WO1991016560A2 - Device for controlling flowable media

Info

Publication number: WO1991016560A2
Application number: PCT/EP1991/000807
Authority: WO
Inventors: Joseph Boy
Original assignee: Joseph Boy
Priority date: 1990-04-26
Filing date: 1991-04-26
Publication date: 1991-10-31
Also published as: WO1991016560A3; AU7770191A; PL293180A1; CS120391A3

Abstract

A control device, in particular a valve for wind instruments, has a tapered rotating body (1) with a flow opening (12) in its front face and a flow opening (13) in its circumference, several of these tapered rotating bodies being arranged in each wind instrument valve. The rotation of these rotating bodies (1) can be controlled in various ways. Further disclosed is the use of this system of tapered rotating bodies with corresponding housings in areas of machine construction, in particular its use as a mixing battery or as a control element in the energy technology (turbines) or as a safety valve.

Description

Steuereinrichtunσ for flowable media

The invention is based on a control device for flowable media according to the preamble of the main claim. Such a control device, however in the special field for wind instruments, is known as a valve as it is used to divert the airways in wind instruments, in particular brass instruments. There is a rotary valve in which a double valve (DE-PS 36 26 402) has a rotatable valve member, which is conically shaped in sections, as a rotating body in a housing so that it can rotate. An air pipe bend present in the rotating body alternatively connects the end-side flow connection lying coaxially to the axis of rotation for each rotational position with two flow connections arranged on the circumference. The flow connections can serve for the air supply or discharge, whereby by switching, that is, rotating the rotating body from a flow connection on the periphery another pipelines of different lengths can be switched for sound formation. In addition, the rotary body is provided twice as a double valve and is designed to be mirror-symmetrical, ie there are two air line elbows in such a double rotary body.

It is decisive for the quality of a valve for wind instruments that the air passages are not changed abruptly, that the rotating body is easy to operate, therefore has a low mass and, above all, low centrifugal forces that occur during rotation. In addition, the construction of the respective instrument - horn, trumpet, etc. - means that structural requirements must be met. For this reason, most valves were developed for certain instruments with their special tasks, so that the most varied valve designs are known.

A particularly advantageously designed rotary valve is known from the above-mentioned double valve (DE-PS 36 26 402), in which the rotary body equipped with two air line elbows is mounted in the valve housing on the one hand with a slim shaft and on the other hand with an outer collar determined by the desired air passage cross section , wherein the device for rotating the rotating body acts on the slim shaft connecting the two air line elbows. Due to the design as a double valve, i.e. A common slim shaft with two mirror-symmetrically arranged air line elbows, there is a rotating body with two identical parts driven by the shaft and four valve-housing connections, two of which are available on the front and two on the circumference and also

ERS _A TZBLATT a short-circuit line in the housing, which connects the two air line elbows to one another in a corresponding rotational position of the rotating body.

Starting from such a double valve, as far as it relates to one rotary body, considered as a genus, as well as from a likewise known single valve. DE-PS 559 300) it can be stated that, as far as the wind instrument construction is concerned, the housing design and also the use of single or double valves depends on the type of instrument, for example horn or trumpet. In addition, the production costs of the valves of a wind instrument make up almost 50% of the total instrument costs for some instruments, so that the great advantages of the generic valves with regard to the air flow are burdened by high production costs.

The invention is based on the object, on the one hand, of further developing the applicability of the generic rotary body for instrument construction, in order to thereby save costs in manufacture in instrument construction and further optimizing the instruments, and on the other hand the applicability for flowable media on other technical devices Areas.

REPLACEMENT LEAF Advantages of the invention

The control device according to the invention with the characterizing features of claim 1 has the advantage that such rotary bodies of the generic type used in instrument construction are cheaper to produce in larger series and only the valve housing can be designed according to the intended use. The rotating bodies can be driven in a wide variety of ways, for example via a fork, cords and either in the same direction or in the opposite direction. There. again the rotary body accounts for about 50% of the costs of the entire control device, considerable costs can be saved in this way, especially when it comes to series production, even for very small series. In addition, in wind instrument construction mostly only small series of individual special instruments are produced anyway, for each of which a special housing has to be adapted to the overall instrument. It is also conceivable that the rotary body consists of a completely different material than the valve housing.

Another advantage of the invention is that even when using a plurality of rotating bodies within a valve body, additional air channels can be shifted directly into the housing, for example in the case of short-circuit lines between such independent rotating bodies. Other quality-determining conditions can also be more easily met, such as minimizing the moving mass of the rotating body, good mounting of the rotating body, and sealing and driving the same.

REPLACEMENT LEAF o -

According to an advantageous embodiment of the invention, the rotating body, as already known in part by the above-mentioned double valve (DE-PS 36 26 402), is designed as a truncated cone, which is guided in the valve housing like a plug and has an annular end face for the axial bearing, which in the cylindrical shaft serving for radial support merges. The advantage is, on the one hand, that the air line elbow, as in the known double valve, has a diversion angle of less than 90 ° between the axial connection and the peripheral connection, which results in various advantages in terms of air conduction and, on the other hand, that the rotary body drive is directly on the shaft in addition to their mounting, so that even with one-sided radial loading, this cannot adversely affect the rotating body itself or its conical fit in the housing.

Advantageously, the axes of rotation of the rotating bodies do not have to be arranged in parallel, as a result of which particularly favorable assignments of the peripheral flow opening arranged on the rotating body result in one rotating body. Here, the rotating bodies assigned to one another can be arranged within the housing such that the circumferential flow openings of these two rotating bodies lie opposite one another. As a result, the distance between the two lateral surfaces of the rotating bodies and, above all, the housing dimensions can be minimized. This applies in particular if the end faces of the two rotating bodies point largely in opposite directions.

ERS _A TZB _L ATT According to an advantageous embodiment of the invention, at least two of the rotating bodies can be driven simultaneously via a fork of the rotating device. Depending on the application, the rotating bodies can be operated in different or the same direction of rotation. For this purpose, a rack can be arranged on the fork, which engages in a corresponding pinion or partial pinion of the shaft. The gear can also be present on the cylindrical part of the rotating body, which is arranged on the front side of the rotating body. As a result, a higher torque can be achieved due to the larger diameter, although the toothed rack stroke also increases to the same extent.

According to a further embodiment of the invention, the rotating body can be rotated via a cord wound around the shaft and its pull actuation. The cord can be attached to the shaft in different ways. The main advantage is that the cord is very low in mass and serves as an almost massless and noise-damping adjustment system.

According to a further embodiment of the invention, which is also claimed for itself, the usually problematic dewatering of the wind instrument can be achieved by appropriate design and arrangement of the rotating body. While normally the musician has to turn and turn the instrument in different directions in order to achieve the accumulation of condensate at an outlet, the arrangement of a rotary body valve at the lowest point of the valve manifold is sufficient according to the invention to turn it by briefly turning it and thus opening it to the outside To drain water.

REPLACEMENT LEAF According to an application of the generic rotary body in technical fields which are completely different for the person skilled in the art, the use according to the invention as a mixer tap of various media is proposed, both in sanitary and heating construction and in process engineering in the chemical and farc industries. Another proposal according to the invention relates to the use in power engineering systems. Especially for use in gas and water turbines and in nuclear power plants. Another use of the rotating body according to the invention is as a pressure relief valve.

All of these application inventions deal with the use of the control device with a rotating body, which in sections has a conical outer surface, by means of which advantages and technical teachings not previously recognized by the experts were determined. Of course, these teachings and features can also be combined in combination with the other mentioned teachings, particularly claimed for wind instruments.

According to an important embodiment of the invention, regardless of the application as a valve for musical instruments or control device in another technical field, the housing can consist of at least two parts according to the invention, with a possibly multi-level division level, which is determined by the axes of rotation and bearings of the rotating body or the Rotary body is determined. Due to the multi-part nature of the housing, the rotating body and possibly existing bearing rings can be easily assembled and disassembled. A seal can be arranged between the housing parts

REPLACEMENT LEAF his. The two parts can be designed identically with a corresponding design of the housing, so that only one manufacturing tool is required. If necessary, additional bearing rings and sealing rings can be inserted between such housing parts, as well as tapered bushes in the region of the conical outer surface of the rotating body. Last but not least, the respective material can be optimized in this way, for example a plastic bushing which is previously placed on the possibly metallic rotating body before the entire unit is again inserted into the multi-part metal housing. Conversely, of course, the socket can also be made of metal, the rotating body made of plastic and, if applicable, the housing made of plastic, depending on the case.

It is known to use so-called single-lever mixer taps in mixer taps, especially for cold and hot water in the sanitary field, in which a pivotable, tightly fitted disc with a champagne hole has different proportions depending on the pivoting position and thus the ratios of the two inlets, i.e. the hot and cold water, releases. The disadvantage here is that the washer must be pressed in a pressure-tight and tight manner in a swivel space and that there is no possibility of adjustment during assembly or after wear has occurred. In an embodiment of the invention as an application in the sanitary field, the known double rotary body of the double rotary valve (DE-PS 36 26 402) is accommodated in the valve housing, which is arranged in mirror image per se, with front and circumferential connections and a common drive of the rotary body first inlet connection of the first fluid, in particular

ER _SA TZBLATT special cold water and at the first peripheral connection a return of the first fluid to the second peripheral connection of the inlet of the second fluid, in particular hot water and to the second end connection of the outflow of the mixture, and in the short-circuit line a directional pressure relief valve permitting the first fluid is. Since this application is a completely different subject to the wind instruments, this special application is not obvious - and also a different subject from the procedural features. Such a mixer tap according to the invention is small, has a low flow resistance, has low flow noise and is easy to operate without sealing problems with only one lever and over a short rotation path.

When used in the heating sector, such a valve which can be prevented from jamming can prevent the heating water, which is under only a low driving pressure, for example in the case of gravity heating systems. Such a valve can be used favorably as a four-way mixer in heating construction, particularly in the case of priority switching when hot water is heated.

Particularly in process engineering in the paint industry or in the chemical industry, the combination of a number of rotating bodies in different channel guides in individual housings as well as in housings to be combined can result in a mixing device in which, owing to the low flow resistances or maintenance of the flow,

ERS _A TZBLATT Cross sections on the respective rotating body units, in particular a fluidic and drive technology improvement of the known device can be achieved.

This advantage of low flow losses is particularly evident when used in power engineering systems. In turbine construction in particular, the drive medium must be controlled in and out without congestion occurring. The same applies to the application in nuclear power plants.

When used as a valve member in a safety valve, it is assumed that axial and radial forces act on the rotating body due to the conical design. If the valve member, ie the rotating body, is pressed axially into the cone, the rotating body is slightly pushed out of the cone when a certain pressure is reached, so that a short circuit can occur, via which the excess pressure can be reduced.

According to the invention, the object can be used in other fields of application, such as, for example, as switches in pneumatic tube systems or in the vacuum tube in magnetic levitation trains.

Further advantages and advantageous embodiments of the invention can be found in the following description, the drawing and the claims.

T Various exemplary embodiments are shown in the drawing which, with regard to the basic features, can also be transferred to the fields of application for which application protection is claimed. The structural designs are to be transferred according to the other area of application. Special examples are not shown here.

1 to 8 show a multiple valve for four connections and two switching positions with installation and actuation variants, the two rotating bodies 1 of the same design according to the invention with their axes of rotation I being offset in a valve housing 2, the shafts 3 with the engagement points 4 of the drive device 5 (FIGS. 4 to 8) facing away from each other. For this reason, the drive device 5 has a fork 6, which ensures that both shafts 3 are actuated simultaneously and synchronously. Either a toothed rack or a cord can be used as the means of attack, as will be explained later in the description.

The rotating bodies 1 have a conical section 7 in the control area, which on the one hand merges into the shaft 3 via an annular end bearing 8, which is mounted radially in the valve housing 2. The conical section 7 merges at the other ends into a cylindrical collar 9, which also serves as a radial bearing. In order to save weight and avoid imbalance, the rotating body 1

REPLACEMENT LEAF formed as low in mass as possible, so that the cone section 7 can be formed by a conical sleeve 10 which covers other cavities.

In each of the rotating bodies 1, a line elbow 11 is formed for the air guidance, which is open on the one hand towards the end face 12 of the rotating body 1 and on the other hand is open on the circumferential side towards the cone section 7 with a beak-like opening 13.

As can be seen from the longitudinal section of the exemplary embodiment shown in FIGS. 1 to 4, the valve housing 2 has a short-circuit channel 14 between the two rotating bodies 1. 1, the two circumferential flow openings are located

13 opposite each other, so that the air passage shown by the arrow line II is made possible. In FIG. 2, on the other hand, is the short-circuit channel by rotating the rotating body 1 by 180 °

14 blocked and, as represented by the air guide arrow line III, there is an air guide via the circumferential flow openings 13 via a length-controlled air line 15, it being known that in the case of blowing instruments this length corresponds to a desired tone.

3 and 4 show how a plurality of such valve housings 2 can be combined with one another by connection on the end faces 12. The free ends of the shafts 3 are easy to attack and lie on only a few parallel axes. Particularly in the example of FIG. 4, these free ends of two independent rotating bodies are partially opposite one another. Overall, this means that a valve battery is included

REPLACEMENT LEAF very small volume of space can be designed, as is required, for example, with trumpet instruments. In the example shown in FIG. 3 in particular, a strong straightening of the main air duct is achieved.

5 to 8, the drive device 5 is shown in a highly simplified manner. The above-mentioned fork 6, which engages with its tines 20 at the points of application 4 on the shafts 3, is driven by an actuating lever 16. The transmission of the longitudinal movement of the tines 20 or the fork 6 to the shafts 3 can take place via a toothed gear, namely a toothed rack of the zinc teeth 20 on a pinion of the shaft 3. In the variant shown in FIG. 6, a pusher 17 is used for actuation, as it is known from wind instruments. 6 corresponds to that of FIG. 5. Otherwise, the illustration of the housing in FIGS. 5 and 6 corresponds to a view of the housing 2 from FIGS. 1 and 2 from the right side speaking the arrow V.

While the distance between the circumferential flow openings 13 is greatly shortened in the variants FIGS. 5 and 6 in accordance with the example according to FIG. 1, in order to thereby also minimize the short-circuit line 14, further variants are shown in FIGS. 7 and 8, in which the special design of the valve housing 2 is decisive. In the variant of FIG. 7, the air line 15 has a circular shape, the short-circuit channel section 14 being extended and the valve housing 2 being designed in the form of a segment of a circle. In the variant according to FIG. 8, however, the short-circuit line 14 is routed outside the housing 2. Correspondingly, there are two additional outlets arranged on the circumferential side of the respective rotating bodies in the valve housing. The drive devices are also designed in accordance with the power routing of the variants in FIGS. 7 and 8.

9 to 11 show a second exemplary embodiment in which the end-side flow openings 12 are arranged on one side of the valve housing. In the variant according to FIGS. 9 and 10, the axes I of the rotary body 1 run parallel to one another as in the first exemplary embodiment, but the shafts 3 point in the same direction. Correspondingly, the end-side flow openings 12 likewise point in a direction that is remote from that of the shafts 3. This can be advantageous for some wind instruments or other implementations of the invention. The short-circuit line 14 running in the valve housing 2 is only insignificantly longer than in the first exemplary embodiment. The drive can also be done by a fork 6. The short-circuit channel 14 is opened in FIG. 9, and in FIG. 10 there is a switching position of the rotary body 1, which leads to an air guidance according to the air guidance arrow line IV.

In the variant shown in FIG. 11, the rotary axes I of the rotary body 1 are at a certain angle to one another, as a result of which the short-circuit channel 14 in the housing 2 can be shortened and as a result of which both shafts 3 of the rotary body 1 lie so close to one another that they instead of through a fork can be actuated via only one rack 18 (or cord drive)

REPLACEMENT LEAF are, which each have rows of teeth on the sides facing the shafts 3, which engage in corresponding pinions of the shaft 3, not shown here. 12 and 13 show a further exemplary embodiment in which four rotating bodies 1 are mounted in a multi-part valve housing 19, namely on two parallel axes of rotation I. Two of the four rotating bodies point to one another with their front-side flow openings 12, with the other two the waves 3 against each other. Two parallel rotating bodies 1 are driven by a fork 21 together. In the switching position shown, there is the shortest possible air flow between the two front housing connections 22 in accordance with the air guidance arrow line VI. When the two rotating bodies 1 on the left side of the valve housing 19 are rotated, the air on the left side is directed via the air line VII, which is shown in broken lines. before it reaches the right part of the valve housing 19 via the rotating body 1 arranged at the top left. But also in this part the air can be directed according to the air duct line VIII by correspondingly rotating this rotating body 1 mounted in the right part of the valve housing 19 before it then exits the valve housing 19 again.

This embodiment ensures an optimally short construction within the valve area and thus particularly meets the requirements for trumpet construction.

E _RS ATZBLATT In this exemplary embodiment, the valve housing 19 is composed of two parts with an offset division plane IX for constructional reasons and for assembly reasons. As a result, in particular the upper two rotating bodies 1, which expand towards the center of the housing, can be used before the housing 19 is assembled. A corresponding housing division in the longitudinal direction is of course also conceivable, that is to say in the sectional drawing plane. The housing halves are screwed together after assembly, additional guide pins can be provided for guidance.

Basically, it should be pointed out that the rotation of 180 ° in the exemplary embodiments shown is only structurally dependent, that is to say that if the connections are correspondingly changed to the outside, it is also possible to work with less, for example 90 °, rotation angle. Thus, in the variant of this embodiment shown in FIG. 13, it can be seen that the axes I of the rotating bodies 1 arranged below are parallel to one another, but offset parallel to one another. Only a small offset is shown here, and this offset can also be correspondingly large without changing the short-circuit channels 14.

14 to 21 different drives of rotary bodies are shown via an actuating cord 33, which acts on the shaft 3 to rotate it. Four variants are shown for this purpose, a first version in FIGS. 14-16, a second in FIGS. 17 and 18, a third in FIGS. 19 and 20 and a fourth in FIG. 21.

REPLACEMENT LEAF In the example shown in FIGS. 14-16, an armature 34 effects the connection of the actuating cord 33 to the shaft 3. The armature 34 consists of a bracket 35 which merges into two rails 36, which side faces the shaft 3 engage in grooves 37 arranged there. The actuating cord is guided in its wrapping around the shaft 3 through the bracket 35 and over each of the rails 36, so that when the cord is tensioned, the rails 36 are pressed increasingly into the grooves 37 and the cord is guided by the bracket 35 is buckled twice against the direction of pull, which leads to an increased friction effect for the entrainment.

14 and 15 show a further example of a cord anchoring in which only a simple bracket 38 is placed radially on the shaft 3, the cord 33 also being looped around the anchor 38 once the shaft 3 is wrapped around it. When the cord is tightened, the anchor is pulled radially against the shaft 3. The legs 39 of the bracket 38 are in corresponding, existing in the shaft 3

Milling inserted to prevent the bracket 38 from moving on the shaft 3. Instead, the bracket can also be connected to the shaft by soldering or other means.

In the embodiment shown in FIGS. 19 and 20, a threaded pin 25 provided with an eyelet 24 is screwed into a threaded bore 23 of the shaft 3, through whose eyelet the actuating cord 33 is threaded. The threaded pin 25 has a central inner bore 26, into which a pin 27 is inserted, which is in the screwing of the threaded bolt 25 is supported on the bottom 28 of the threaded bore 23 and is thereby pushed in the inner bore 26 against the actuating cord 33, as a result of which this is clamped in the eyelet 24. The actuating cord 33 is threaded through the eyelet 24 and wrapped around the shaft 3 such that when the actuating cord 33 is tightened, the threaded bolt 25 is loaded in the screw-in direction, which leads to an increase in the pinching force in the eyelet 24.

21 shows a fourth fastening example for the actuating cord 33, in which it is guided through a transverse bore 28 of a bolt, in particular a threaded bolt 29, which, as not shown in more detail, is fastened radially to the shaft 3 and wherein The actuating cord 33 is clamped in the transverse bore 28 via a screw 30 arranged coaxially to the threaded bolt, the screw tip partially penetrating the actuating cord 33. The screw itself can be actuated from the end face of the threaded bolt 29.

21 to 25 show two different exemplary embodiments of a valve design through which a wind instrument can be dewatered. This problem, which is annoying in the case of wind instruments, is solved very simply here, in that one of several rotating bodies, when rotated accordingly, merely opens a channel to the outside through which the water can run off when the rotary position is appropriate. For this purpose, the valve which is the deepest in terms of water accumulation in the instrument will advantageously be selected so that the likewise usual pivoting of the device for water accumulation is no longer necessary. 22 and 23 show the first such valve, in which two rotating bodies 1 anchored to one another are arranged in the upper part and are rotated in the open position in both figures. By rotating it by 180 °, the air would instead be guided via the air line 31 instead of the air guide arrow line VI shown, which in turn corresponds to a specific tone sought. If, as shown in FIG. 23, the individual lower rotating body 1 is now rotated, water accumulated in the valve can be discharged via the peripheral flow opening 13 of this rotating body 1 and a corresponding housing opening 32.

24 and 25 show a variant of such a drainage valve, in which there is only one rotating body 1 in the upper region, while in the lower housing part there are two rotating bodies which are adjustable independently of one another and face one another with the front-side flow opening. The rotating bodies arranged on the left in the housing are actuated at the same time in order to change the air to the air duct line VII instead of the air duct arrow line VI. As in the previous example, the rotating body 1 arranged at the bottom right in the housing serves for dewatering, as shown in FIG. 25, the air guidance line VI being temporarily interrupted.

All the features shown in the description, the following claims and the drawing can be essential to the invention both individually and in any combination with one another.

REPLACEMENT LEAF Reference list

REPLACEMENT LEAF

I axis of rotation of the rotating body 1

II Air arrow line

III Air arrow line

IV Air arrow line

V view arrow

VI Air arrow line

VII Air duct line

VIII air duct line

IX division level

SHEET

Claims

1. Control device for flowable media, which has at least one rotating body rotatably mounted in a housing (valve housing), in which a duct bend (pipe bend) runs, the rotating body

an at least sectionally conical outer surface,

an end-side flow opening, a peripheral flow opening in the conical section which has a diversion angle of less than 90 °,

- Has a largely constant flow cross-section of the elbow including the flow openings

_E REPLACEMENT LEAF - And wherein in the housing there is a conical bore section corresponding to the conical section of the rotating body, with at least two meters per rotating body corresponding to the dimensions of the circumferential flow opening to connection openings in the housing, which, depending on the rotational position of the rotating body, alternate with the end-side flow Opening can be connected, characterized in that at least two such rotating bodies (1) are axially parallel in a common housing (2, 18, 19, 24, 27) with multiple connections (14, 15, 21, 22, 23, 25, 26 , 29, 31) are combined to form a multiple control device (multiple valve), the rotary bodies (1) being independent, in particular, through a shaft (3) facing away from the end-side flow opening (12) but arranged axially to the rotary body are drivable from each other.

2. Control device according to claim 1, - characterized in that the rotating body (1) each as a plug-like in the housing (2, 18, 19, 24, 27) in the conical housing bore guided truncated cone with adjoining ring end faces for axial bearing and radial seal are formed.

Control device according to claim 1 or 2, characterized gekenn¬ characterized in that at least two of the rotating body at the same time via a fork (6, 28) in the same or opposite directions can be driven.

_E R _SA TZBLATT

4. Control device in particular according to claim 1, characterized in that the rotating body (1) can be rotated via a cord wound around the shaft (3) and its pull actuation.

5. Control device according to claim 4, characterized gekennzeich¬ net that for fastening the cord in the shaft radially a pin is arranged with an eyelet threaded through the cord.

6. Control device according to claim 5, characterized geκennzeich ~ net, that the cord is fastened in the eyelet by a cord within the eyelet partially penetrating screw ^'.

7. Control device according to claim 5 or 6, characterized gekenn¬ characterized in that the pin is screwed into the shaft and that the cord engages under tension in the direction of rotation of the pin.

8. Control device according to one of the preceding claims, characterized in that two rotating bodies (1) arranged axially in the housing (19) with the end-side flow openings (12) are arranged facing one another (FIG. 12).

9. Control device according to claim 8, characterized gekennzeich¬ net that at least two rotating bodies (1) are arranged as single or double bodies, but pointing in different directions, in particular parallel in the housing (19), so

REPLACEMENT LEAF that the circumferential flow openings (13) of two rotating bodies (1) face each other at a corresponding rotational position.

10. Control device in particular according to one of the preceding claims, characterized in that a rotating body (1) is arranged in the housing such that in a certain rotational position a drainage opening (32) on the peripheral flow opening (13) of this rotating body (1) is opened (Fig. 22-25).

11. Control device in particular according to one of the preceding claims, characterized by the use in a mixer tap for at least two fluids.

12. Control device according to claim 11, characterized by the use in process engineering, in particular in the dye and chemical mixture.

13. Control device according to claim 11, characterized by the use as a mixing valve in the application of a double rotary valve with mirror-image arranged Ventilge¬ housings, each receiving a rotating body and with front and circumferential connections, a common drive shaft, with the first end-side connection the inlet of the first fluid (cold water), a return of the first fluid to the first peripheral connection, the inlet of the second fluid (hot water) to the second peripheral connection, and to the second front connection of the

REPLACEMENTB The discharge of the mixture is connected and there is a non-return valve that allows the first fluid to pass through in the short-circuit line.

14. Control device according to claim 11, characterized by the use as a four-way mixing valve of a heating system.

15. Control device, characterized by the use in power engineering systems for heavy machinery.

16. Control device according to claim 14, characterized by the use of rotating body and housing as Kanal¬ control for turbine inlets of water and steam turbines.

17. Control device according to claim 15, characterized by the application for liquid control in nuclear power plants.

18. Control device in particular according to one of the preceding claims, characterized by the use as a pressure relief valve, in which the rotating body is lifted off from the conical seat surface forming a short circuit against a restoring force when the overpressure is reached.

19. Control device according to one of the preceding claims, characterized in that the housing consists of at least two parts, the division surface of which is determined by the position of the rotating bodies.

REPLACEMENT LEAF

20. Control device according to claim 19, characterized in that sealing means are arranged between the housing parts.

21. Control device according to claim 19 or 20, characterized in that the rotating body in special Lager¬ rings is rotatable, which can be inserted when the housing is open.

22. Control device in particular according to one of the preceding claims, characterized by use as a switch in a pneumatic tube system.

E _R SET BLADE