DE1775798C3 - Multi-way or control valve with pressure medium drive and auxiliary piston - Google Patents

Description

3 4

F i g. 2 is a circuit diagram of an electromagnetically arranged. The plate 40 and the valves 41, 45 and

actuated three-way valve 51 are shown in the Fi g. 4, 5 and 6 shown The Ven-

Fig. 3 is a circuit diagram of a pneumatic valve41 is a two-way valve and thus formed,

made three-way valve that a screw tip 42 depending on the position of a

4 to 6 a Aufsetzplatk for the valve 5 screw 43 releases a pressure inlet 44 or

housing with three valves and closes

Fig. 7 the five-way continuous slide valve as a three- The valve 45 is a three-way valve and has position valve. a screw 46 with a tip 47 as a valve control A five-way spool valve 1 has a closing piece. This Venal is a third way cuboid housing 1 *, which is provided with a smooth io an outside air connection 48, which when Through hole 2 is provided the open end closing an inlet 49 with a controlled those of the bore 2 are connected by two identical covers 3 connection 50 and 4 locked. In the bore 2 is a slide valve 51 is also a three-way valve Bushing 5 used, which is provided by inserted seal and with a screw 52, which has a tip processing rings opposite the wall of the bore 2 15 53 as a closing member She carries on her shaft is sealed In the slide bushing 5 is a two O-rings 52 'and works so that they are in their Control slide 6 is longitudinally movable, which in the bushing position has an inlet 54 and two outlets 55 bore 7 is metallically sealed. and 56 locked and in their other, drawn The slide bushing 5 is short j £ s the housing Γ position keeps all channels open The body of the and in the free ends of the bore 2 are two ac screws 46 and 52 are the same, the different identical sleeves 8 and 9 are used, in which two work of the valves 45 and 51 is achieved Kolbea 10 and 11 are longitudinally movable. The piston through a sleeve 57 at valve 45 and through a 10 and 11 are also the same and are in the further O-ring 52 'at valve 51.

Text labeled as "additional piston" You have used the circuit diagram according to FIG. 2 except Form of disks and are each with one for alternating »5 the three-way valve 1 α two magnetic auxiliary valves

side pressures provided double seal. 38 and 39 and the two-way valve 41 and the

The sleeves 8 and 9 are each with a ring seal three-way valve45 according to FIGS. 5 and 4. In

14 or 15 opposite the wall of the bore 2 from such a structure are the following uses

sealed The outer ends of the sleeves 8 and 9 types of control valve 1 α possible:

lie on disk-shaped cover seals 16 and 30

17, which openings 18 for the pressure medium 1. Magnetic pulse valve with self-control passes from outer ring spaces 19 and 20 to outer. Ren pressure chambers 21 and 22 inside the sleeve The two-way valve 41 is unlike sen 8 and 9 have. One inner pressure chamber 23 each as shown in FIG. 2 in the open position, and 24 lies on the control slide 6 facing 35 The three-way valve 45 is in a position on the side of the additional piston 10 and 11, respectively is connected to the outside air via a connection 25 50 (as shown), accessible from the outside. From the pressure medium inlet 29 comes control air. The control slide 6 is - like the whole valve via the open two-way valve 41 and via the - symmetrically constructed. It has a middle two auxiliary valve 38 and 39 in the outer pressure collar 26 and two on these thinner chambers 21 and 22 of the control valve 1 a. Intermediate pieces adjoining drive piston 27 The control valve 1 o is reversed by the and 28. The collar 26 and the drive piston 27 and auxiliary valves 38 and 39, the. depending on the actuation, the 28 have the same diameter. On the lower outer pressure chambers 21 and 22 alternately on the side of the valve housing, five channels 29 to 33 45 are provided, of which the middle channel 29 is provided

the inlet of the pressure medium, two subsequent 30 2. double solenoid valves with external control

and 31 with one consumer and two outer 32.

and 33 are connected to the return. The two-way valve 41 is in the blocking position

called channels are radially through the slide 50 (as drawn). The position of the three-way valve

bushing 5 passed through and open into the wall 45 corresponds to the illustration. The control air comes

the bushing hole 7. In addition, the slide is no longer from 29, but from a third party

housing 1 'has two radial bores 34 and 35 center connection 36. The mode of action is inadequate

provided that over the outer end edges of the same as described under 1..

Sleeves 8 and 9 to the two outer pressure chambers 55

21 and 22 lead. 3. Self-controlled solenoid valve

In the circuit diagrams according to Figures 2 and 3 are.

to simplify the illustration, the five-way The two valves 41 and 45 are inrer

Control valves 1 shown as three-way valves 1 α flow position. However, such a circuit diagram is without essential 60 The control air comes from 29 and passes over Modification also for four- or five-way valves, the valves 41 and 45 and the auxiliary valves 38 and

usable. 39 into the outer pressure chambers 21 and 22 and

To explain the various effects via the connection 25 also in the inner ° π "* -

way of the multi-way control valve 1 α on the hand of the chamber 23. By pressure equality in the "™" -

Circuit diagrams should also be noted that the valve 65 chambers 23 and 21 is connected to the additional piston IO

housing 'a plate' (Fig.4) is connected upstream, set and the molded to the control slide6

in the three different, by adjusting the drive piston 28 takes over the task of the

Screw actuated valves 41, 45 and 51 are driven.

The air in the outer pressure chamber 22 presses because of the larger effective piston area of the additional piston 11, the control slide 6 in the left Final lie. Wild but after switching the auxiliary valve 39 the pressure chamber 22 is relieved of pressure, the drive piston 28 pushes the slide 6 to the right.

4. Solenoid valve with external control

The valve 41 is in the blocking position, the valve 45 is opened. The control air now comes again from the external medium connection 36.

The mode of action corresponds to that described under 3.

The circuit diagram according to FIG. 3 does not use any Solenoid valves, on the other hand, in addition to valves 41 and 45, the already described three-way valve 51 and two throttle points 60 and 61 are provided. The throttling points 60 and 61 are in front of the outer pressure chambers 21 and 22 of the control slide la. The ones described in this circuit diagram Valves are therefore not operated by electrical means, but purely pneumatically.

With such a structure, the following other types of use of the control valve 1 α are possible:

5. Switching valve with self-control

The two valves 41 and 45 are open and the valve 51 is closed, as in the drawing shown

From 29, compressed air reaches the inner pressure chamber 23 via 41 and 45 and pushes the control slide 6 to the right.

To switch over, control air is fed into the outer pressure chamber 22 via 35. Due to the larger effective piston area of the additional piston 11, the slide 6 goes to the left.

6. Changeover valve with external control

The two-way valve 41 is in the blocking position brought

The control air comes from the external medium connection 36.

. The mode of operation corresponds to that described under 5.

7. Negative pulse valve with self-control

The valve 45 is closed and the valves 41 and 51 are open

From 29, the compressed air reaches the outer pressure chambers 21 and 22 via the two throttle points 60 and 61. Is now through one of the connections 34 or 35 the one built up in the chambers If the pressure is released, the slide 6 moves into its left or right end position.

8. Negative pulse valve with external control 5

The valves 41 and 45 are blocked. The valve 51 is open.

The control air comes from the external medium connection 36.

ίο The mode of operation corresponds to that described under 7.

9. Positive pulse valve with two identical drive pistons

The three-way valves 45 and 51 are closed. The position of the two-way valve 41 is meaningless.

The additional pistons 10 and 11 are supplied to the pressure chambers by alternately supplying compressed air 21 and 22 are alternately acted upon via the connections 34 and 35 and the control slide 6 moves into the end position opposite to that which is acted upon by pressure.

10. Positive pulse valve with differential piston

The valves 41 and 51 are closed, the valve 45 is open. The left additional piston 10 is except Function set.

The control air pulses are given via the connection 35 and the external medium connection 36 and reach the pressure chambers 22 and 23. They act in the pressure chamber 22 on a large piston area (piston 11) and in the pressure chamber 23 on a small piston area (piston 28).

It can be seen from this that ten different switching types are possible without converting the multi-way control valve and without interfering with its moving parts.

Instead of a piston valve 6, another slide valve, e.g. a flat slide, can of course also be used.

Fig. 7 shows the five-way control slide as a three-position valve. Two additional pistons 65 and 66 are hat-shaped and take the Drive piston 27 and 28 in itself. Each drive piston has a separate piston member 67, 68 assigned, which is equipped with a sealing collar 69 or so 70 The additional piston 65 and 66 have lower hat rims 71 and 72, with which de strike at the end faces of the slide bush 5. In this stop position, the slide 6 takes its middle position. It is adjustable through SS - alternating pressure reduction in pressure chambers 21 and 22.

For this purpose 3 sheets of drawings

Claims (5)

1 2 known valve by the special chambers patent claims: complicated for the additional piston and by the partition walls with F the sealed tappet bushings 1. Multi-way or control valve with drive and expensive. .... _tnKA "", "" ♦ em control valve known (US acts ^ patent valves to drive pistons that uf writing 2880755) by a pressure medium, which is using HiUV 5 Furthermore, the Steuerghed two Anbiebsbeiden sides of the movable Ventilgüeds in pistons, each of which has outer pressure chambers and is arranged in an orderly manner The bore (27, 28) ρ the pressure chamber (23, 24) is also immersed, can be closed by the drive piston Line is arranged with a check valve, the diameter of which is larger than the diameter of the drive piston with a supply leading into the outer chamber and with »5 channel connected. This control valve cannot be used for the drive piston, an internal pressure chamber, different modes of operation (23, 24) forms, and that one of the two inner Furthermore, a control valve is known (USA.- Pressure chambers (23, 24) one with a wide patent 2 910 050), the control slide two Ren auxiliary valve (45) connected supply channel has different sized pressure areas and the (25) (Figs. 2 and 3). ao a freely movable actuating pressure 2. The valve according to claim 1. is associated with a recognizable auxiliary piston. The control slide shows that both additional pistons (10, 11) are the same and can thus be brought into three positions ^& one use of the control valve for different purposes 3. ' Valve according to claim 1 or 2 with a mode of operation is neither intended nor possible Control shift inserted into a slide bushing. It is also known in the case of a liquid valve ber, characterized in that the additional two pistons of different diameters together pistons (10, 11) can be used in a movable manner in a sleeve (8, 9), but these pistons are also fixed, whose inner diameter is larger than that connected to each other. These pistons are also in the slide bushing (5) (Fig. 1). a different context and to a different 4. Valve according to one of claims 1 to 3, 3 <> Ren purpose used (German interpretation, characterized in that each additional piston 1 115 041). (65, 66) is hat-shaped and it is also known from a liquid valve associated drive piston (27, 28) accommodates an additional piston to limit a certain (Fig. 7). to use common print space that is provided by 5. Valve according to claim 4, characterized in that it has its own auxiliary valve. Here too indicates that each additional piston (65, 66) is one that separates this feature into another Piston member (67, 68) used with its own slope and for a different purpose Sealing collar (69, 70) is assigned (Fig. 7). (German interpretation document 1 192 836). Based on this state of the art 40 the task on which the subject of the application is based seen therein, a multi-way or control valve that can be used as a switching valve and as a pulse valve The invention relates to a multi-way or ^venti ». ^{which is suitable for} internal control for external control Control valve, in particular with drive by a ring and for pneumatic or electromagnetic Pressure medium, which should be suitable for pilot control with the help of auxiliary valves, as easily as possible. Actuates the drive piston that forms on both sides of the. ... movable valve member in outer pressure chambers This object is achieved according to the invention are arranged and each with one each loosened, that each drive piston in the pressure The freely movable additional chamber assigned to the drive piston, in which the additional piston is also immersed Pistons. 5 »is arranged, the diameter of which is greater than Such a control valve is, for example, by ^the diameter of the drive piston and with the the German Auslegeschrift 1 249 620 known. Forms an inner pressure chamber for the drive piston, Conversion of the mode of operation of this known valve ^{and that one of the} lower pressure chambers tils * connected ^to another auxiliary valve from a two-position valve in a Dreistel- ^a "» control valve or a pulse valve is the supply channel 55 has. The drive piston of the movable valve member still depends. In this way, another additional piston that can be used in a variety of ways is assigned, which is separate from the multi-way or control valve of the valve member mentioned at the beginning. These additional pistons are created in a way that is much simpler to build; Especially since special chambers are movable and act via tappets sealed in additional working chambers, mechanical stops, partitions, on the movable ^{valve member} and tappets on the additional piston and seals. In the valve housing are in fall. into the range of motion of the additional pistons - Particularly advantageous embodiments of the invention protruding stops are used, through which the paths result from the sub- the additional piston in two separate piston claims. paths are limited. This known control valve ⁶ 5 An embodiment of the invention is in has the disadvantage that the additional piston represented by um- drawing, namely shows constant screwing of stops shut down F i g. 1 a five-way spool valve in the Need to become. Also, the valve body is the cut,