DE1902848A1 - Convertible pneumatic relay capable of performing logical functions - Google Patents

Description

Convertible β pneumatic relay that able to perform logical punctures.

The invention relates to pneumatic relays ir ^; logical punctures.

Ea are many types of pneumatic relays known expensive combinations the vercohiedene ^ö or allow tax consequences. These heiais can be broadly divided into two categories:

One category of well-known relays includes those which are able to carry out logical functions according to the way they are connected to different "tusk openings". These relays enable the formation of predetermined automatic controls with the aid of a reduced number of ^ elaia. However, these relays are relatively complicated, complex and expensive.

The other category of ^ elais includes those who which can only perform a basic logical function. These relays have a relative easy training and are cheap, but you can go with it only one logisoht puncture is performed for them, beiepitlewtiie a locking function.

Di · V _{er (t} i _n FINISH this Belai · dtn according to rules of Booleeohen AIg9br * eraöglioht performing various logical koftpltxtr punctures.

009839/1255

ORIGINAL INSPECTED

To establish a network for a desired simplify logical puncture and reduce costs, it is preferred to use only two elementary relays (or cells). The one, usually open Relay corresponds to a negative or disable function, while the other, usually closed relay, corresponds to one paying puncture.

Usually open and usually closed relays are of course known in the art. However, these known ^ alais have very different punctures, and they cannot be formed from identical elements. The invention provides a pneumatic relay which can be formed from identical components and which, with minor changes, can be of the usually closed or usually open type. D _a s relay according to the invention enables the -version all logical punctures and creating a random free memory.

Accordingly, the invention relates to a pneumatic relay with logic punctures, which is characterized in that it has a control structure with at least two access openings inside its body. Bin valve member dasan one end a puss and at the other end has a head provided with a valve seal, is guided in the V _Q displaceable ntilkörper. "Bin passage extends in said valve body along the shank of the displaceable valve member, and the seal on the V _e ntilgliedkopf controls the V _he bi _{n (i un} g between a Binlaßkammer and ^ iesem passage formed as a groove in the shank of the valve member In a usually closed design, an outlet opening communicates with the passage formed by the groove in the valve stem and the seal on the head of the valve member closes this passage in the normal state from the inlet chamber one pass ahead

seen, the usually the inlet chamber with the outlet chamber connects, while the passage formed by the Uut in the stem of the valve member usually with the Outside is connected. However, if the control mechanism changes the position of the valve member, it closes Valve member head the passage between the inlet chamber and the outlet chamber and connects the outlet chamber via the groove in the valve member stem with the outside.

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

Fig. 1 is a sectional view of a relay according to the invention which is implemented as a normally open relay.
Fig. 2 is a sectional view of a relay according to the invention which is implemented as a normally closed relay.

Fig. 3 is a partial sectional view of a modified one Inlet chamber.

Fig. 4 shows a further modification of the inlet chamber. FIG. 5 is a bottom plan view of the relay according to FIG

Invention.
FIG _o 6 is a side view of the relay according to the invention.

Fig. 7 is a schematic representation of a normally closed relay

Fig. 8 is a schematic of a normally open tellung D _ars ^ elay.

Figure 9 is a schematic illustration of a memory with priority cancellation, the aua two relays according to of the invention is composed. Fig.10 is a schematic illustration of a

Memory with priority entry, which is composed of two relays according to the invention. FIG. 11 is a schematic representation of a memory with priority erasure made up of two

909839 / $ 125

Relay is composed according to the invention.

In Pig. 1 shows a relay according to the invention, which is designed as a normally open relay. The relay body comprises three sections designated by side 1, 2 and 3. ^T he section 1 has an inlet port A on. The portion 2 has an ^A uslaßöffnung S and a cleaning or drain opening P. Section 3 has two control openings B and C, compare also Pig. 5 and 6.

The various openings A, S, B and C can be provided with metal nozzles 4, which make it possible to to arrange the relay in a circuit by simple pipe or hose connections or other connections and hold. Like from Pig. 5 and 6 are the Openings A, S, B and C are all located on the same side of the relay body.

In the interior of the relay body, a displaceable valve member 5 is arranged, which has a butt 6, a shaft 7 and a head 8. The head 8 is provided with an annular seal 9 which is against a Seat 11 places. A membrane 10 acts as a peder to the To press seal 9 on the head of the valve member 5 against the seat 11, and it is provided with an opening 12, the creates a connection between the inlet opening A and an inlet chamber 13 in which the head 8 of the Valve member 5 moves.

In the seat 11 holes 14 are formed, the one Connection of the inlet chamber 13 with an outlet chamber 15 and the outlet openingShersteilen. The seal 9 on the head of the valve member controls the connection between the inlet chamber 13 and one or more grooves 16 which are formed along the valve member shaft 7. The grooves 16 open into a chamber 17 which is connected to the drainage or cleaning port P and in which the Foot 6 of the valve member 5 moves. A work equipment

909839 / 12pcs

blocking sealing ring 18 blocks the connection between the passage formed by the groove 16 and of the outlet chamber 15

The control mechanism is arranged in section 3 of the Belaiskörpers and has a membrane 19, the a wall of the chamber 17 under the foot 6 of the valve member and the chamber 17 from a control chamber

20 separates. The two control openings B and C are open with the control chamber 20 via a Durohgang in connection which contains a selector plug 21. This circuit selection part performs an OR function, that is, if there is pressure at the control port B, the selector plug 21 is in the position shown, and pressure is applied to chamber 20. In approx. Ier This is done when pressure is applied to the control port 0 is switched, the dial plug 21, and iJruok prevails in the control chamber 20. When the dial pot 21 is in one of its end positions is located and control pressure is present at both openings B and C, the plug remains

21 in its position, which it assumes, according to the differential surface presented to the pressure

In the absence of pressure in the chamber 20 due to the fact that neither the control port B nor the Control port 0 pressure is applied, the head of the valve member is in the position shown in FIG. 1, with the seal on the head of the valve member on the seat 11 is seated and the inlet port A, which is usually open, with the outlet port S is connected. The outlet port S and the outlet chamber 15 are, however, separated from the outlet port P.

If, however, a pressure signal is sent to control port B or the control opening is applied to 0 or both The membrane 19 is bent towards the top and moves aioh upwards against the YuS 6 dt · valve members a 5, to the head 8 dta Ventilgliadaa presses the membrane 10 against a seat 22,

9Q9839 / U58 "

whereby the inlet port A is closed. The outlet opening S is then with the outside over the outlet opening P in connection, namely due to the fact that that the seal 9 on the head of the valve member lifted from its seat 11 and a connection over the path S-15-14-16-17-P is manufactured.

The logical function of this relay is therefore:

S = A. (B + C)

The boost ratio k of the relay under pressure is thus. ₁
k = I

where P is the pressure applied to the inlet chamber 13 and

ρ
P is the pressure prevailing in the chamber 20 which is able to lift the foot 6 of the valve member 5 and reduce the mechanical resistance of the membrane 19 and the membrane as well as the pneumatic force due to the pressure P acting on the upper surface of the valve member head 8 ¹ to overcome.

fig. 2 reflects the amendments that are required are to the usually open - ^ relay according to Fig. 1 in to convert a normally closed relay, where the usually closed ^ nlais all elements of the 1 with the exception of the sealing ring 18.

In addition, the seat 11 is not provided with holes, but it is made solid. By the distance of the sealing ring 18, the outlet opening S is permanently in working fluid connection with the outlet opening Pj the The connection between the inlet opening A and the outlet opening S is through the seal 9 at the head of the valve member blocked·

there is also another valve seal in the form of a

909Ö39 / 125S '

from the foot 6 of the valve member 5 carried sealing part 23 is provided, the connection between the passage formed by the groove 16 and the outlet chamber 17 blocked when the valve member 5 is in its uppermost position. This is achieved in that the Sealing part 23 lies against a seat 24 before the head 8 of the valve member in its uppermost position Can shut off inlet port A. The membrane 10 is never placed on the seat 22, according to the Length of the sealing part 23, and the inlet opening A is permanently open to the inlet chamber 13. In normal condition of the valve, however, every further connection is closed, and when the valve is switched, the connection open to the outlet opening, but the connection to the outside is closed.

In the absence of pressure in the ^ control chamber 20 rests Seal 9 on the head of the valve member on the seat 11, and the outlet opening S is opposite the inlet opening A closed, but it is in communication with the atmosphere via the vent port P.

However, if a pressure signal to the control port B or the control port C, or to both is applied, the diaphragm 19 is deformed under the pressing action and interacts with the foot 6 of the valve member into contact to the V _en tiigiied to move 5 upward, until the sealing part 23 rests on the seat 24. The upward movement, however, is stopped before the inlet opening A is closed off, so that the inlet opening A is in working fluid communication with the outlet opening S and these openings A and S are separated from the outlet opening P.

The logical function of the normally closed relay according to Fig. 2 is therefore:

S = A (B + C)
The relay according to the invention can have a number of

909839/1255

Changes are subject to. Reference is made to the examples shown in FIGS. Instead of bias the valve member 5 by means of the membrane 10 in its normal position, it is possible by means of a Preload spring 25, as shown in FIG and use a valve seal member 26 to effect the shut-off of the inlet port A.

As shown in Fig. 4, it is possible to omit the spring 25 and the one at the inlet port A prevailing and acting on the valve member head 8 pressure for biasing the valve member 5 in the direction to exploit against his normal position. The membrane 19 could also be left foil, and the foot 6 of the Valve member 5 could be replaced by a piston on one end face of which the pressure in chamber 20 acts,

5 and 6 show the relay body, which is formed from the three sections 1, 2 and 3 lying next to one another is held together by a tlmfangband 28 which is received in a groove 27 (Fig. 2) which extends around the assembled sections.

In Fig. 7 the usually closed case is in accordance with Fig. 2 shows schematically the, as indicated above, the function

S = A (B + 0)

and in particular can perform the following functions.

ORI function, in which

S = I if both A = I and B = I, while C is always 0 (I is an unused control access).
OR function with two accesses

S = B + C if A = I, and S = I if B = I or C = I or B + C = I.
IT function with two entrances «

S = AC when B = O, and conversely S = AB when C m 0.

908839/125 *

The usually open relay shown schematically in FIG. 8 has the puncture

S = ABC

The NOR function can be performed, in which S = B, where A = I and C = O (a ^ü expensive access remains unused) ·

Furthermore, if A = I, the function NOE is obtained, in which S = B + Ü. Lock functions can also be used with a blocked access or with two blocked accesses. Of course everyone else can Logical functions are performed by Beiais is assumed according to the invention and the usually closed elements and the usually open ismente combined according to the rules of Boolean algebra.

In Figs. 9, 10 and 11 are examples of combinations usually open and usually closed elements shown according to the invention. Those in Figs The memory shown schematiaoh are each made up of one usually open and one usually closed relay of the type shown in Figs. 1 and 2 is formed. Your functions are

3 »1 (M + S) or S = M + S I

Sin regular memory consisting of two normally open relays each having two ^ö t your en access! Is composed, is shown schematically in Fig. 11. This tank has two 3 feed inlets 1 * and 1 * ', and the resulting function is

3 = A (M + S)

There is a random moment in the operation of the memory of FIG. If, for example, the inlet 1 "is fed to the dsm bin 1 *, the memory is set. On the other hand, if the 3inlet 1 'is fed before the inlet 1", the storage is cleared

809839/1311 *

ORIGINAL JNSPHCTED

"Eliminate, a time delay can be introduced into the feed to the inlet ^{11 of the reservoir.}

In contrast, the accumulators of FIGS. 9 and 10 have only one feed inlet, and they are therefore at the point in time at which the logic device is pressurized, absolutely free of random moments.

909039 / 12Sl

Claims (12)

Claims 1. Convertible pneumatic relay capable of performing logical punctures, with a relay body which has an input opening, an output opening, a discharge opening and control opening and in which a displaceable valve member is arranged, which has a head at one end, one with the input port associated passageway in the V _en tilkörper controls, and with a Arbeitamittelsteuerme £ h.anismus which controls the movement of the displaceable valve member by applying Arbeitsmitteldurck to the ^ expensive mechanism by from one end position into the other end position moves the displaceable valve member , characterized by a passage (16) parallel to the valve member (5), which connects the underside of the head (8) of the valve member (5) to the drain opening (P), and at least one sealing part (9) on the valve member which is connected to a corresponding seat (11) cooperates around the passage parallel to the valve member (5) (16) control. 2. Relay according to claim 1, characterized in that the - "working medium control mechanism has a working medium control chamber (20) which has a movable wall (19), two control openings (B, C) which open into the chamber (20), and one Has selector plug (21) which is ^{movable to and fro in a passage between the Ö} expensive openings (B, C) and the chamber (20), so that the presence of _pressure k at one of the control openings (B, C) the movable wall (19) of the chamber (20), this wall (19) being arranged to move the valve member (5). 3. Relay according to claim 1 or 2, characterized in that the seat (11) for the valve disc (9) has a passage (14) through which the Auaganga opening (S) 909839/1255 -1U- connects to the inlet port (A) so that the valve is usually open, and that under the seat (11) one Sealing part (i8) is arranged, which the passage between the seat (11) and the passage (16) running parallel to the valve member (5) closes (pig. 1). 4. Relay according to claim 1 or 2, characterized in that the seat (11) for the valve sealing part (9) so is designed that it is usually the connection between the inlet opening (A) and the outlet opening (S) closes that a passage is provided which provides a working fluid connection between the outlet opening (S) and the passage (16) parallel to the valve member (5), which is usually associated with the discharge opening (P) is connected, and that on a foot (6) of the valve member (5) a further valve sealing part (23) which cooperates with a seat (24) in the valve body to be parallel to the valve member (5) extending passage (16) and the drain port (P) to close when the control mechanism moves the valve member (5) into its other end position, the shape of the valve sealing part (23) preventing the valve member from being in the other end position the inlet opening (A) closes (Pig. 2). 5. Relay according to one of claims 1 to 4, characterized in that the parallel to the valve member (5) extending passage (16) is formed by a groove in a shaft (7) of the displaceable valve member (5). 6. Relay according to one of claims 1 to 5 »characterized in that the valve member (5) is pressed into its normal position by a peder (25) acting on the valve member head (8) (Pig. 3). 7. Relay according to one of claims 1 to 5, characterized in that the valve member (5) is pressed into its normal position by the pneumatic jerk acting on the valve member head (8) (Pig. 4). 909839/1255 8. Heiais according to one of claims 1 to 5 »characterized in that the valve member (5) in its normal Position is pressed by a diaphragm (10) which acts on the valve member head (8) and which is in one Bndstellung acts as a valve seal part. 9. Relay according to one of claims 1 to 8, characterized in that the head (8) of the valve member (5) carries a further valve seal member (26) which cooperates with the seat and the valve body to the Block off the inlet opening (A). 10. Relay according to one of claims 1 to 9 »characterized in that the relay body is formed from three sections (1» 2, 3), one section of which has the ¹ Hn input opening (A), a section the ^A usgar.i _; J opening (S) and the displaceable Ventilg..i id (5) contains, and the third gate contains the control mechanism (B, G, 20, 21, 19). 11. Relay according to claim 10, characterized in that the three sections (1, 2, 3) are held together by a band (28) are arranged in a circumferential groove (27). 12. Relay according to one of claims 1 to 11, characterized in that metal connecting pieces (4) are used in the input, output and control openings. 909839 / $ 125