DE1900861U - VALVE ACTUATED BY THE PRESSURE TO BE SHUT OFF. - Google Patents

Description

jr. HEINZ FEDER

RA. 452 407 * 26,6.64

Patent attorney June 25, 1964 -.K Jj

4 Düsseldorf '^ ^w

; un Wehrhahn 77/1 and many more

Siebeck-Metallwerk G-mbH. , Ratingen, Am Sandbach 35-41

"Valve that is actuated by the pressure medium to be shut off.

There are "already actuated by the pressure medium to be shut off Valves are known which have a pressure chamber covered by a central flow-through membrane. This pressure space is up through, a continuously open, arranged in the membrane bore with the inflow side in connection, with that of the pressure chamber side from acted upon area of the membrane is larger than that membrane surface acted upon from the inflow side. As with Pressure equalization between the inflow side and the pressure space on the membrane surface there is a greater force acting on the membrane from the pressure chamber side than from the inflow side the "valve in G-closed position, as long as the pressure chamber is not is relieved to the outside.

As soon as the pressure chamber is relieved, the force acting on the membrane from the pressure chamber side is reduced, so that the membrane lifts from its seat and releases a singing gap through which the medium can pass to the outlet side of the valve can.

The disadvantage of this membrane "bran valve is that" when expired the membrane only a relatively narrow annular gap becomes free, and the liquid suffers a relatively high pressure loss, since the liquid centralizes the membrane and only after several diversions to the drainage connection got.

It is the task of the innovation to eliminate the disadvantages that adhere to this known membrane valve and to shut off a valve To create pressure medium operated valve which has a low flow resistance.

For this purpose, the valve is newly designed as a corner valve, with a., Mfferential piston as the valve body serves, the smaller area of the inflow side and the larger area of which can be relieved via a closable opening Pressure chamber faces, which is continuously open through a bore arranged in the differential piston with the inflow side Connection. The differential piston is useful here designed as a pot piston, in the bottom of which the bore is arranged and that on the side facing the pressure rail with a rim is provided, which can lie sealingly against the cylinder wall forming the pressure chamber. At the pressure room remote side of the brim can be in the cylinder wall or a plurality of vent bores may be arranged to facilitate movement of the differential piston. An exemplary embodiment of the subject of the innovation is described in more detail with reference to the accompanying figure. Fig. 1 shows in cross section and partially also as a view of the subject of the innovation in closed position.

- 3 -

In the valve housing 1 designed as a corner valve, the Inlet side 2 and outlet side 3 through the differential piston trained valve body 4 completed against each other. The valve body 4- is designed as a pot piston and is on the side facing away from the inflow side with one shown in view Brim 5 provided together with the cylinder piece 6 and a screw-off cover 7 forms a pressure chamber 8, which is in constant open connection with the inflow side 2 through the bore 9 arranged in the bottom of the valve piece. In the unscrewable cover 7 is a closable opening provided through which the pressure chamber 8 can be relieved as soon as the "valve is to come into operation." If, for example, the valve is to be used in underground mining for irrigation purposes, the opening 10 is expedient with a Provide a sprinkler that comes into operation when a certain permissible temperature is exceeded. To make a good seal To ensure between the inlet and outlet side when the valve is closed, a Seal 11 may be provided. Further seals can be used for Sealing of the pressure chamber are used, such as the seal 12 arranged in the rim and the one between the cylinder piece 6 and Seal 13 arranged on cover 7.

On the side of the rim 5 facing away from the pressure chamber 8, one or more are in the cylinder wall of the cylinder piece β Vent holes 14 arranged. Another seal 15 can be used to avoid leakage losses in the open position of the valve could occur.

The length of the cylinder piece 6 can differ from that in iig. 1 illustrated embodiment such a length

- 4th

have that the Yentilkörper 4 so far in the open position can be moved, Ms the most favorable flow path from the inflow side 2 to the A-flow side 3 ″ with the lowest flow resistance is guaranteed.

Sciiut ζ ans saying:

Claims (5)

- 5 protection claims 1. Valve which is actuated by the pressure medium to be shut off, characterized in that the valve is a corner valve is designed and a differential piston serves as the valve body (4), the smaller area of which is the inflow side (2) and its larger area has a lockable The opening (10) faces the pressure chamber (8) which can be relieved and which is passed through a bore (9) arranged in the differential piston is in constant open connection with the inflow side (2). 2. Valve according to claim 1, characterized in that the valve body (4) is designed as a pot piston in which Bottom the bore (9) is arranged, and the side facing the pressure chamber (8) is provided with a rim (5) is. ^. Valve according to Claims 1 and 2, characterized in that the The rim (5) of the valve body (4) rests in a sealing manner against the cylinder wall forming the pressure chamber (8). 4. Valve according to claim 1 to 3, characterized in that the Completion of the pressure chamber (8) with a screw-off cover (7) is, in which the closable opening (10) is arranged. 5. Valve according to claim 1 to 3, characterized in that on the side of the brim (5) facing away from the pressure chamber (8) one or more ventilation bores are arranged in the cylinder wall.