DE2204316A1 - SHUT-OFF DEVICE FOR LIQUID AND STEAM MEDIA - Google Patents

Description

Description of the patent application:

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"Shut-off device for liquid and vaporous media"

Applicant: Josef Hotte, 4? 85 Belecke

Drewer Heide

The invention relates to a shut-off device for liquid and vaporous media, which consists of a There is a rotatably mounted slide inside the shut-off chamber · Shut-off devices of this type are also under the Known as "rotary valve".

In the known shut-off devices of this type, the axis of rotation passes through the center of the shut-off chamber and has an equiangular slide guide, so that each time the valve is opened and closed The entire valve slot is coated on the sealing surface of the slide. This creates additional stress on the valve seat due to the friction between the metal surfaces. The wear caused by this is greater, «the more precisely the valve is fitted.

The invention aims to avoid this disadvantage by measures that allow the slide sealing surfaces to be lifted and placed precisely on or off the valve seat cause.

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This object is achieved in rotary valves of the type characterized in that the from the outside actuatable axis of rotation of the gate valve is arranged eccentrically to the fluid line of the medium. Through this it is achieved that when the valve is opened, the sealing surface of the gate valve lifts exactly from the valve seat, while it rests on the sealing surface just as precisely when the valve is closed. This is with Safety avoided the harmful lateral displacement of the sealing surfaces on the valve seat. Even with special precisely machined valve seats thus there is no increased risk of wear.

A particularly simple and advantageous embodiment of the inventive concept can be achieved by the provides essentially triangular slide guide with a short and a long leg, so that the sealing surfaces from their curved path, which they describe when lifting off the valve seat, ecenau into the original "La ^ e are forced to return.

The arrangement according to the invention also enables the Sealing surface of the gate valve with an elastic Belaer to provide; a measure that does not apply to the known rotary slide arrangements because of the risk of wear can be carried out,

309832 / 0U3

In another embodiment, one provides according to a further feature of the invention, the sealing surfaces of the slide with a metal plate that is so unstably besieged is that it automatically removes any unevenness in the valve seat fades This unstable storage can, for example, result from a in the center of the original sealing surface incorporated bulge with a corresponding Recess in the back of the metal plate cooperates in such a way that that the now forming the sealing surface: metal plate is mounted pivotable on all sides within small limits.

The rotary valve is preferably driven by a worm wheel or by means of a toggle lever, if hydraulic or electrical operation is not preferred _{or the like}

According to a further feature of the invention, one forms the slide guide with two arms and leaves it outside of the Direction of currents run in order to block congestion and eddies avoid ο

The drawing illustrates an exemplary embodiment of the invention, namely

° r. 1 shows a cross section through the slide assembly with swiveled rotary valve flar,

while Fi ^ ₀ ? shows the longitudinal section with the same slide position.

3098 32/0143 - 4 -

From Fig. 3 the cross-section is shown in

final position swiveled slide shown.

while Fig. 4- shows the same arrangement in the longitudinal

cut shows.

The shut-off chamber (1) with the passage opening (2) to be closed for the liquid or vaporous medium has the shut-off valve (4) connected to the axis of rotation (8). According to the invention, the axis of rotation (8) is arranged eccentrically to the flow center line of the medium (see Fig. 2, which clearly shows this) The triangular slide guide has a long leg (5) and a short leg (6) , the Mmtter (7) engages over _t operated · the sealing surface of the gate valve (4 x) is provided with an elastic covering (9), which is supported on the valve seat (3).

309832/0143

Claims (1)

Pat corresponds to objections Shut-off device for liquid and vaporous media that come from one within the shut-off chamber rotatably mounted slide "consists, thereby erekennzeiohnet that the externally operable axis of rotation (8) of the gate valve (4) is arranged eccentrically to the flow part line of the medium * 2 ·) shut-off device according to claim. 1, characterized in that the substantially triangular slide guide has a long leg (5) and a short leg (6) 3) shut-off device according to claim Λ and 2 characterized in that the sealing surface of the gate valve (4) is provided with an elastic covering (9) 3 2 / 0U3 4 ·) shut-off device according to claim. 1 and 2, characterized in that the slide · * · guide is designed with two arms, wherein both arms run outside the direction of flow 5.) Shut-off device according to claims 1.2 and 4, characterized in that a metal plate serves as the sealing surface, which is so unstably mounted in a known manner on the breech block that any unevenness of the Automatically compensated for the valve seat 6 ·) Shut-off device according to the Amspr. 1-5, characterized in that the drive of the rotary valve via worm gear or Knee lever takes place 309832 / 0U3 Blank page