DE2755149A1 - FLUID DISTRIBUTOR WITH A CONTROLLED VALVE - Google Patents

Description

2755U3

Applicant: Stuttgart, December 8, 1977

MAHTONAIH P 34-76 S / kg

Compressed air systems GmbH
4234 Alps, Lower Rhine

Representative"

Kohler - Schwindling - Späth
Patent attorneys
Hohentwielstrasse 41
7000 Stuttgart 1

Fluid distributor with a controllable slide

The invention relates to a fluid distributor with a slider controllable by privileged signals.

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It is known that in industrial sequential circuits, uncertainties or errors in the entire working cycle or in certain phases of the work cycle primarily due to the simultaneous occurrence of incompatible signals that ensure a correct sequence of the duty cycle · These uncertainties are generally eliminated by switching on function relays in the sequential circuit eliminated · The function relay can be switched on intuitively according to logic or graphic mathematical methods or systematically in cascade, divider, sequential systems, etc.

In all cases, these methods and arrangements have the disadvantage that they require the installation of additional components to solve the problems, such as relays, branches, Pipelines, etc., which are relatively expensive to design, manufacture and operate, and which are perfectly designed Personnel required. The invention is based on the object of designing a fluid distributor so that it has a memory and thus avoids errors in sequential controls without additional measures being necessary in such facilities

This object is achieved according to the invention by the use of a fluid distributor in which the slide is controlled at its two ends by devices which adjust the slide every time the control signal supplied to the devices at one end changes from the "0" state to the State ^M 1 "changes, regardless of the state of the control signal that is applied to the devices at the other end.

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that such a distributor can also have several slides controlled in this way. Furthermore, the term "ends" of the slide is to be understood as the place where the control openings are located »This information is therefore not of a restrictive nature. The inventive construction of the fluid distributor allows the construction of a distribution system, in which the last command signal appearing enjoying the priority d _e h. Such that always the appearance of the last signal determines the state of the slide. It is therefore possible to create a follow-up system with the distributors according to the invention, without the need for additional circuits or additional components, without preventing undesired states due to the accidental simultaneous occurrence of signals.

Further details and refinements of the invention result from the description of the exemplary embodiments shown in the drawing. The one of the description and the features to be inferred from the drawing can be used individually in other embodiments of the invention or several can be used in any combination. Show it

Fig. Λ a longitudinal section through «a first embodiment of a fluid distributor according to the invention,

FIG. 2 shows a longitudinal section through an end section of the distributor according to FIG. 1 on an enlarged scale,

Fig. 3 and M- longitudinal sections corresponding to Fig. 2 through

modified embodiments of the invention,

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3 shows a longitudinal section through a further embodiment a fluid distributor according to the invention,

6 shows a longitudinal section through a third embodiment a fluid distributor according to the invention and

7 shows a longitudinal section through a control device, which can be attached to a fluid prescaler in order to to train him according to the invention.

In the fluid distributor shown in FIG. 1 isb in a base body 1 a bush 2 is used, which has fluid channels in the form of grooves 2a and in the bore a cylindrical slide 4 is slidably mounted, which has a structure known per se and is used to establish a connection between different openings. Although a cylindrical slide is shown in the drawing, it is understood that the Invention relates to all types of gate valves, in particular to flat gate valves and to manifolds with valves.

The control system according to the invention can also be used in fluid distributors controlled by the fluid pressure, which are equipped with a solenoid pilot valve and are generally referred to as solenoid distributors.

According to the invention, the distributor at its two iüiden control devices, which, like, each consisting of FIGS. 1 and seen from a body 5 "5 ^a, in dtr

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the base body 1 of the distributor is inserted and a cylinder 6, 6a forms which is closed at one of its ends by a plug 7i 7a. By doing Cylinder 6, 6a, a first piston 8, 8a is slidably arranged, which the cylinder 6, 6a in two chambers 9 »9a and 10, 10a subdivided "

The plugs 7 »7» each have a control opening 11, 11a provided, which open into the chambers 9 »9a and allow the supply of the control fluid to this chamber. These control openings can be provided with a line connection in a known manner.

The first pistons 8, 8a are each provided with a rod 12, 12a, which has a valve body 13 »13a at its end carries, which carries a seal 14- which is able to to close a calibrated opening 15, 15a, the is located between the rod 16 and the bore in a second piston or auxiliary piston 16, 16a, the is displaceable relative to the rod 12, 12a.

The second piston 16, 16a, which is provided with a seal 17 on its periphery, is arranged to be displaceable in the bore $ which extends into the body 5 »5a, so that the second piston 16, 16a together with the slide 4 - on which it can come to rest, is movable in the bore. The second piston 16, 16a has a smaller cross section than the first piston 8, 8a,

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The valve bodies 13 »13a are themselves each in bores 18, 18a arranged, the Ί-attached to the two ends of the slide are. In the slide 4 serving for ventilation outlets 19, 19a are attached, which directly are connected to a vent opening of the distributor or directly via a special: opening made for this purpose can communicate with the outside air.

The chamber 10, 10a is controlled by a pressure fluid source via a channel 20, 20a, a calibrated Droasel bore 21, 21a, a line 22, 22a and an opening 23 fed, which is connected to a pressure medium source. As long as the manifold is a pressurized fluid is supplied, the chamber 10, T3a itself is also included fed by this fluid.

In the rest position, i.e. in the absence of a command signal at the control openings 11 and 11a, the first Pistons 8, 8a held in a rear position in which they are adjacent to the stoppers 7 »7a, as shown in FIG shows because of the pressure prevailing in the chamber 10, 10a on the first piston 8, 8a a greater force is exercised than on the smaller auxiliary piston 16, 16a. Ea arises as a result of the difference between the cross-sections of the two pistons 8, 8a and 16, 16a a resultant force which the pistons 8, 8a and 16, 16a existing Unit leads to the rear until the piston 16, 16a rests against a shoulder 24, 24a of the body 5 »5a, during the Piston 8, 8a is closely adjacent to the plug 7 »7a, as it Fig. 2 shows.

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ks it should be mentioned that in this state where the chamber 9 »9a is depressurized at first Piston 8, 8a acting force has the consequence that the valve body 13, 13a with its seal 14 in the Seat is pressed, which is located in the second piston 16, 16a and thereby closes the opening 15, while at the same time the piston 16, 16a rests on the shoulder 24.

If, for example, a control signal is fed to the control opening 11a, which consists of a fluid whose pressure is equal to the pressure of the fluid fed to the opening 23, the resultant of the forces to which the auxiliary piston 16a and the first piston 8a are subjected is such that the unit formed by the two pistons 8a and 16a and the slide 4 is shifted to the right, that is, in the direction of the control opening 11 '. The first piston 8a, however, continues its V / eg to the right, so that the valve body 13a lifts off and the fluid releases the Meg through the calibrated annular opening 15a. In this way, the chamber 10a via the annular opening 15 * »whose cross-section is calibrated with respect to the throttle bore 21a, the bore 16a and the outlet 19a with the vent opening, which can also be in connection with a return container for the fluid Connected

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In this state, the fluid therefore flows from the supply opening 23 via the line 22a, the throttle bore 21a, the chamber 10a, which is annularly calibrated Opening 15a and the outlet 19a to the vent opening and, if necessary, to the return container. The throttle bore 21a and determine the annular calibrated opening 15a hence the pressure prevailing in the chamber 10a in this state. In any case, this pressure is so low that the force exerted on the auxiliary piston 16a is smaller than the force required to move the slide 4, but large enough to return the first Ensure piston 8a with the valve body 13a.

If, while maintaining the pressure signal at the control opening 11a, a signal is now also at the same time the same pressure is supplied to the control port 11, the resultant of the forces exerted on the pistons 18 and 16 is greater than that exerted on the piston 16a Force, because the valve body 13a is lifted and as a result the pressure in the chamber 10a is very low. Therefore moves from the slide 4, the piston and the piston 8 existing unit to the left, so in the direction of the control opening 11a, and takes the Piston 16a with it until it comes into contact with shoulder 24a of body 5a. The slide 4 was consequently despite the presence of a pressure signal on the Control opening 11a moved.

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When the control opening 11a is now depressurized, the residual pressure of the fluid in the chamber 10a leads the piston 8a back into its rear position until the valve body 13 »with its seal 14a rests against the seat in the auxiliary piston 16a and in this way the annular opening 15a and thus closes the vent. The pressure in the chamber 10a therefore rises to its normal pressure, However, without any movement of the slide 4- taking place, Rather, the slide remains in its position because there is no sufficient force to move it is present.

In the current state, the valve body 13 is in the open position and in the Chamber 10 prevailing pressure at a low value. If now a pressure signal of the control opening 11a is again the resultant of the forces acting on the two surfaces of the first piston 8a of the chambers 9a and 10a and on the piston 16a are exerted from the chamber 10a, so large that they counter force exerted by the slide 4 overcomes. At the other end of the slide 4, the pressure is in the Chamber 10 at its low value because the valve body 13 is in the open position. As a result, will causes the unit consisting of the piston 8a, the piston 16a and the slide to move back to the right in To move towards the control opening 11 until it comes to a stop at the right end of its path.

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It can therefore be seen that the control device of the distributor ensures a movement of the slide 4 every time a command signal changes from the state "O" to the state "1", regardless of whether the control signal at the other control input has the state "0""or" 1 ".

In Fig. 3, a variant of the embodiment described above is shown in which the annular Opening 15 no longer has a throttling effect, but a complete expansion of the medium in the chamber allowed when the valve body 13 has lifted. In this case a helical compression spring 25 is used, which is located in the chamber 10 and is supported on the one hand on the body 5 and on the other hand on the piston 8. This helical compression spring 25 has the purpose of applying a restoring force directed to the stopper 7 and the control opening 11 to exercise on the piston 8 »

The other end of the distributor is in the same way formed by the first piston 8a in the direction of the control opening 11a by an identical helical compression spring is applied.

4 shows another variant in which the annular opening 15 again no longer has a throttling effect, but a partition 26 is arranged between the pistons 8 and 16, which creates an additional chamber that connects to the chamber 10 via a rod surrounding the rod , annular opening 28 communicates,

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which has a throttling effect. In this case, there is complete relaxation in the chamber 27 instead, since the annular opening 15 has no throttling effect ;; has more, while the opening 28 after the lifting of the valve body 13 is maintained a pressure in the chamber 10 which is higher than the pressure in the case of the embodiments. after the FIGS. 1 and 2. Dither is the feedback in this case of the piston 8 even safer »

It goes without saying that it is possible to provide a distributor with the control devices described above only on one side, so that it can only be controlled on one side by means of priority signals, while the control on the other side takes place in a known manner. In this case, the slider is controlled at a first end by means which always move the slide, when the transitions existing on this side equipment control signal supplied from the state ¹¹ O "in the state" 1 "regardless of the state On the other hand, the devices at the second end of the Vex divider can only move its slide when the control signal at the first end assumes the state "0" _{or the like}

In Fig. 5, a distributor is shown, which like the previously described distributor has a basic body 1 with a socket 2 in which a movable slide 4 forming the distribution member is arranged.

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At one end, namely in the drawing at the right end, a first piston 8 is arranged, which the Cylinder 6 is divided into two chambers 9 and 10, of which chamber 9 is in communication with control port 11. The piston 8 is connected to a rod 12 provided, which carries a valve body 15 in the Is able to close a calibrated opening 1 ^, which is located between the rod 12 and the bore in a second piston or auxiliary piston 16. To the other end, shown in the drawing on the left, is a plug 7 & present, which only with a simple Control opening 11a of a known type is provided. The pressure signal acts here directly on the end of the slide, as long as it is available

It should be remembered that with respect to the control opening after displacement of the slide 4 and the piston 16 with the participation of the piston 8 of the valve body 13 on End of the way is lifted and the chamber 10 is brought into communication with a vent or a return container, so that the pressure in the chamber drops to a low value. Then, when a signal is supplied to the control port 11a, the Slide 4- a force exerted, which the resistance that is exerted by the residual pressure in the chamber 10. As a result, the slide 4 is moved, until he takes the position shown in Pig, 5

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If then the signal 11 is eliminated while the signal 11a is maintained, the Piston 8 is released and can under the low pressure of the fluid in the chamber 10 in its cow division return, in which the valve body 13 comes to rest on its valve seat and thereby the Chamber 10 closes so that the pressure of the medium in this chamber can rise to its normal value. If a pressure signal is now fed again via the control opening 11, while the pressure signal is still at the Control opening 11a is applied, the slide 4 remains immovable in the position shown in Fig. 5 and it moves only the piston 8, which brings the valve body 13 into the open position again. Accordingly, daa Signal at the control opening 11a a priority the signal at the control opening 11. Because of this thing the position of the slide 4 can then always be changed by the signal applied to the control opening 11a when this signal changes from state "0" to state "1", regardless of the state of the signal at the control opening 11. On the other hand, the slide can 4 of the signal applied to the control opening 11 can only be shifted when a signal is applied to the control opening 11a is missing. There is only one-way priority and accordingly one has a distributor that is only connected to a control opening by a priority signal is controllable.

Ea is to be noted that in all cases, the distributor has a memory, that is, that its spool remains in the position into which it from the last control signal

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has been brought, even if the control signal disappears.

The devices that are used to control the distributor by priority signals can either integrated in the distributor or manufactured and offered separately as additional equipment, which are attached to the base body of the distributor in the form of one or two cells. In the last In this case, the connections for supplying and removing the fluid between the distributor and the cells can through suitable lines are made using standard seals with the manifold and be tightly connected to the cells.

Fig. 6 shows another embodiment which makes it possible receive the results from control devices with signal priority. In the case of the one shown in FIG The embodiment is the base body 1 of the distributor at its ends, each with a plug or insert 40, 40a provided, which contains a cylinder 42, 42a in which a differential piston 29, 29a is slidably mounted, whose larger area in the cylinder a first chamber 43, 43a and its smaller area in the cylinder a smaller one Chamber 51, 51a limited. The larger piston area of the differential piston 29, 29a is covered with a layer 32, 32a made of an elastic material which, together with a seat 31, 31a, forms a seal. The seat 31, 31a surrounds the opening of a line 30, 30a, which is connected to a groove 44, 44a, which is

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located in the socket 2, and when ßedarf over openings 45, 45a in the slide 4 with grooves 46.

The distributor shown in Fig. 6 is mounted on a connection piece 41, which has Anachlußöffnungen for supplying the pressurized fluid, outlets 37 and 37a »which lead to the receiver to be controlled, and ventilation openings 38, 38a, which may become a Lead return container, provided.

In the chamber 43, 43a of the seat 31 »31a and the large piston area bounds an annular chamber with an outlet 33> 33a is connected, which is used for venting and possibly leads to the return container. The piston 29, 29a is extended by a rod, which carries a slide 47, 47 a, which is in a Line 35 »35a moved to a vent or connected to a fluid container and in which opens a line 34, 3 ^ a, which with the chamber 10, 10a is connected, which is located at one end of the slide 4, as well as at openings 11, 11a, the deliver the control signal with the pressure states "0" and "1".

Assuming that the port 36 is a pressurized standing fluid is supplied and the slide and the differential pistons 29 and 29a are in the position shown in FIG. position shown, the large area of the piston 29 is above the line 30 and the rage 44,

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the opening 45, the groove 46 and the opening 48 with the Opening 38 in connection, which is used for ventilation and possibly leads to a return container. The elastic layer 32 of the piston is in this position on the seat 31 and thereby closes the line 33.

In addition, the chamber 43a, which is above the piston 29a is located, via the line 30a, the groove 44a, the opening 45a and a groove 46 in the slide 4 as well as an opening with the opening 36 in connection, via which the pressurized medium is supplied.

When a pressure signal is supplied to the control port 11a, this signal passes through the space between the Rod of piston 29a and line 35a to line 34a and acts on the corresponding end of the slide 4, the other end of which is vented via the lines 34 and 35 or is connected to a return tank. During this time, the differential piston 29 remains in its Position, because the resultant of the forces due to the pressures applied to its different Act sections, hold him in this position. As a result, the slide 4 is moved until it is with its other end strikes against the side on which the control opening 11 is located.

The vent 38a, which also leads to a return tank can lead is now through the opening 45 with the Groove 44 and the line 30a connected to the first chamber 43a. The piston 29a, which is still on his

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smaller area is exposed to the pressure de3 supplied by the opening 11a control signal, while the chamber 43a is now depressurized, now moves in the direction of the seat 31a, on which it comes to rest with its elastic layer 32a, so that this seat is closed _e

In contrast, the other piston 29 is exposed to the action of the pressurized fluid because the Line 30 with the supplying the pressurized medium Opening 36 via the groove 44 and the openings and 49 is connected. As a result, the piston will moves against the bottom of the second chamber 51, whereby he the slide 47 takes with it, the connection between the line 34 and the vent line 35 interrupts and instead establishes a connection between the control opening 11 and the line 34. If now a pressure signal is applied to the control port 11 while the signal is still present at the control port 11a, acts a thrust force caused by the pressure on the end face of the slide, while its other is the control opening 11a facing end vented or with a Return tank connected iat. As a result moved the slide 4 is in the direction of the control opening 11a. As a result, the opening 37 and the line 30 are depressurized, and, as before, the piston 29a now becomes the piston moved until it rests against the seat 31 and closes it. This has the consequence that the slide 47 shifts and the line 34 is connected to the ventilation line 35 will.

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In contrast, the opening 37 and the line JOa are via the groove 4Aa and the openings and 49 connected to the opening 36 at which the fluid is supplied under pressure.

The pressurized fluid thus reaches the valve seat 31a, which is still from the surface 32a of the piston 29a is closed. The piston remains in this position under the effect of the resulting forces, which are developed from the pressure signal supplied to the control port 11a. The cross section of the valve seat 31a is so small that it is ensured that the thrust exerted here is smaller than the thrust exerted by the signal supplied to the control port 11a is exerted. In this way the line 34a is connected held with the ventilation line 35 ».

On the other hand, the opening 37 and the line 30 were connected to the vent opening 38. As a result, the piston ? S rests with its elastic layer 32 on the valve seat 31, which it closes under the effect of the resulting forces which can be traced back to the presence of a pressure signal at the control opening 11.

If the control opening 11a is now depressurized, the piston 29 is under the effect of the pressure that is within of the valve seat 31 is exerted on the surface 32g, the piston 29a moved so that the line 34a with the Control port 11a is brought into communication, which is now depressurized.

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The two end faces of the slide 4 are now free of pressure.

When the control opening 11a is now pressurized again, the slide 4 moves in the direction to the control opening 11 because the line 34a is in communication with the control opening 11a.

^ s is also possible to bring about a return of the movable member 4 to the side of the control opening 11a by first depressurizing the control opening 11 and then pressurizing it again The position of the slide 4 is changed each time the state of one of the command signals 11 or 11a changes from the state "0" to the state "1", regardless of whether the other control signal is in the state ¹¹ O "or" 1 ".

The outlets 33 and 33a are continuously connected to the atmosphere or a return line. However, it is too possible that these outlets are closed when the pistons 29 and 29a are not in contact with the seats 31 »31a.

In the embodiment according to FIG. 6, the distributor is mounted on a connection block 41 and it is the control devices integrated at the two ends of the distributor would also be possible, the control devices in the Connection block to be attached instead of on the distributor itself.

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l'ig. 7 shows a control device in the form of a Cell 50 »attached to a normal distributor and by means of suitable lines 30, 34- to the distributor can be connected. The connection between the lines and the distributor and the cells takes place by means of suitable seals.

Such cells can also be attached in the same way to the connection block at the point of the distributor itself will.

The cell can be single or double, i.e. it can have one or two piston assemblies in the same body with the associated lines and valves. -Uine single or double cell 50 that is designed in the manner shown in Fig. 7, is an independent component, since »with the distributor or its connection block can be connected by suitable connecting means, lines, etc.

or several such cells can also be on one own ünschlussblock be arranged, which is then connected to the distributor in a suitable manner.

independent, single or double cell allows β3, a classic distributor that is controlled by the fluid pressure or a Jiagnet pilot valve is controlled into a manifold to convert, which is controlled by priority signals, optionally with a priority of both Signals or just one signal.

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Furthermore, the device according to the invention allows to create a distributor with a 1t2 reduction, by the two control openings 11 and 11a with each other and connected to a single pressure signal source for control. In this case the slider changes its position every time the single control signal changes its value from "0" to "1".

Although the invention has been described in connection with a distributor which, as a movable control member has a cylindrical slide 4, it goes without saying that the invention also applies to any other type of distributor can be used, for example, with a distributor with a flat slide, an ice flap (clapet ä glace), etc.

Furthermore, a single or double cell in circuit arrangements with a sequence logic or a combinatorial logic can be used wherever it leads to simplification. In Fig. 6 are the control openings 11 and 11a shown on the manifold. Ea of course however, that these openings can also be made on the base.

It should be understood that numerous changes to the foregoing facilities and methods described can be made without intention of limitation were selected only to explain the invention, without departing from the scope of the invention.

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Claims (1)

2755U9 Claims (1ΛFluid distributor with a through privileged Signals controllable slide, characterized in that the slide (4) at both ends of Means (8, 16) is controlled, which adjust the slide (4) each time when the Devices of the one end supplied control signal changes from the state "O" to the state "1", namely regardless of the state of the control signal applied to the devices at the other end. 2w fluid distributor according to claim 1, characterized in that the means for controlling the slide (4) have at each end a cylindrical body (5, 5a) with a cylinder (6, 6a) in which a first piston (8, 8a) which divides the cylinder (6, 6a) into two chambers (9 «9a or 10, 10a), which are connected to two control means sources (11, 11a), and which carries a rod (12, 12a) , on which a second piston (16, 16a) is slidably arranged, which has a smaller cross-section than the first piston (8, 8a) and which has one side on the end of the slide (4) and the other side on a body can find; the two pistons (8, 8a and 16, 16a) delimited chamber (10, 10a) and the outside air or a return line for the fluid is set up. 809839/0681 3. Fluid distributor according to claim 2, characterized in that that the chamber (10, 10a) delimited by the two pistons (8, 8a and 16, 16a) is calibrated via a Opening (21, 21a) with a ürucknittelquelle (23) is in communication. 4-e fluid distributor according to claim 2 or 3 »characterized in that that the slide (4) on one end has one the waste air or a discharge line in connection standing cavity (18, 18a), in which the valve body (13 »13») is movably arranged in this way is that it has an annular calibrated opening (15 »15a), which results between the rod (12, 12a) and a central bore of the second piston (16, 16a) and the cavity (18, 18a) with the chamber (10, 10a) connects between the two pistons (8, 8a and 16, 16a), able to close. 5 «fluid distributor according to claim 2 or 3, characterized in that that the first piston (8) is loaded by an elastic member (25) which is attached to a body fixed Supports abutment and the first piston (8) in alignment on the - ^ nde facing away from the second piston (16) of the cylinder (6) presses. Fluid distributor according to claim 2 or 3, characterized in that between the two pistons (8, 16) one Partition wall (26) arranged iat which of the two Pistons (8, 16) delimited Kamiier (10) into two compartments subdivided and has a bore which delimits a calibrated opening (28) surrounding the rod (12), which connects the two compartments of the chamber (1O). 809839/0661 2755U9 7. Fluid distributor according to claim I _1, characterized in that the slide at a first end is controlled by devices which move the slide every time a control signal supplied to the devices at this end changes from state "ü" to state "1" changes, regardless of whether the ^ control signal, which is fed to the devices at the second end of the üchiebera, has the state "0" or "1", whereas the devices at the second end only cause a shift of the slide when the control signal is "0" at the first end. 8. Fluid distributor according to claim 7 »characterized in that that at the first end between the slide (4) and the bottom of the cylinder (3), in which the üchiebex is (4) moved, only a single chamber (10a) is present, which is connected via a line to a üteuermittelquelle (11a) is connected. 9. Fluid distributor according to claim 1, characterized in that the devices for controlling the slide valve (4) at each end of the base body (1) in which the slide valve (4) is movably arranged, a cylinder (42, 42a ), in which a Differeiizkolben (29 _t 29a) is displaceably mounted, the larger area of which delimits a first chamber (43, 43a) in the cylinder, which can be closed either to a pressure source or to the external air or a discharge line, during which smaller area in the cylinder delimits a second chamber (44, 44a), B09839 / 0661 2755K9 with an opening (11, 11a) for feeding in the Control signal is in communication, and that the cylinder is provided with a valve (47, 47a), which is set up for this purpose, with the line (34, 34a) opening at one end face of the slide (4) the line (11, 11a) supplying the control signal or with a line that opens or connects to the outside air to connect a return line connected line (35, 35 &). 10. Fluid distributor according to claim 9 »characterized in that that in the first chamber (43, 43a) of the cylinder a valve seat (31, 31a) is arranged, which has a line (30, 30a) surrounds, optionally to a pressure medium source or to the outside air or a return line can be connected, the valve seat (31 »31a) on the Cylinder base delimits an annular space, which through an outlet (33, 33a) with the outside air or is connected to a discharge line. 11. Fluid distributor according to claim 10, characterized in that the large area of the differential piston (29, 29 a) with an elastic layer (32, 32a) is provided. 12. Fluid distributor according to one of claims 9 to 11, characterized in that the control devices at both ends of the base body (1) in one on the base body attached insert (40, 40a) are arranged. 809839/0661 13 · Pluid distributor according to one of Claims 9 to 11, characterized in that the control devices are integrated into the base body (i) at its two ends. 14. Fluid distributor according to one of claims 9 to 11, characterized in that the control means are arranged in a single or double cell (50) which can be installed independently of the basic body (1) of the distributor and with it Lines is connected. 809839/0661