Suspension of a valve plate of a vacuum valve
AssigneeVAT Holding AG
InventorBernhard Duelli
Life of this patent
Estimating the term…
Abstract
A suspension of a valve plate of a vacuum valve at a valve rod has a bearing block of rubber-elastic material with first and second side surfaces, one of which side surfaces is fastened to the valve rod or to a plate which is rigidly connected with the latter, and the other side surface is fastened to the valve plate or to a plate which is rigidly, connected with the latter, wherein an inelastic force transmission part is embedded in the rubber-elastic material of the bearing block and extends at oppositely located points or along oppositely located lines up to the side surfaces of the bearing block.
Claims6
A suspension of a valve plate of a vacuum valve at a valve rod, comprising:
- a bearing block of rubber-elastic material with first and second side surfaces;
- one of said side surfaces being fastened to the valve rod or to a plate which is rigidly connected with the valve rod and the other side surface being fastened to the valve plate or to a plate which is rigidly connected with the valve plate;
- a seal located on the valve plate;
- wherein an inelastic force transmission part is embedded in the rubber-elastic material of the bearing block and extends at oppositely located points or along oppositely located lines up to the side surfaces of the bearing block to form a swivel point for swivelling of the valve plate about the inelastic force transmission part relative to the valve rod so that an essentially uniform contact pressing force is exerted on the seal along the entire circumference of the seal.
A vacuum valve comprising:
- a valve body having a valve opening with a valve seat;
- a valve plate which is suspended at a valve rod;
- and
- all actuation device by which the valve plate is movable from its open position initially into a position in which it is located opposite to the valve opening, but is lifted from the valve seat, and then can be pressed against the valve seat;
- wherein at least one bearing block made of rubber-elastic material is provided for the suspension of the valve plate at the valve rod;
- said bearing block having oppositely located side surfaces, one of said side surfaces being fastened to the valve rod or to a plate which is rigidly connected with the valve plate, and the other side surface being fastened to the valve plate or to a plate which is rigidly connected with the latter;
- and
- an inelastic force transmission part being embedded in the rubber-elastic material of the bearing block and extending at oppositely located points or along oppositely located lines up to the side surfaces of the bearing block to form a swivel point for swivelling of the valve plate about the inelastic force transmission part relative to the valve rod so that an essentially uniform contact pressing force is exerted on the valve plate.
A method for producing a suspension of a valve plate of a vacuum valve at a valve rod, comprising the steps of:
- positioning at least one force transmission part between the valve rod or a plate to be rigidly connected with the valve rod and the valve plate or a plate to be rigidly connected with the valve plate;
- said force transmission part contacting mutually facing side surfaces of the two parts to be connected at points or along a line and which extend up the side surfaces of a bearing block;
- and
- the bearing block of a rubber-elastic material which can be vulcanized and located between two oppositely located side surfaces of the two parts to be connected,
- the at least one force transmission part being embedded therein to form a swivel point for swivelling of the valve plate about the inelastic force transmission part relative to the valve rod so that an essentially uniform contact pressing force is exerted on the valve plate.
Dependencies are inferred from the claim text.