Vacuum gate valve having a limb element
First Claim
1. A vacuum gate valve comprisinga valve wall which has an opening and a valve seat running around the opening;
- a closure disk having a closing side for substantially gas-tight closing of the opening;
at least one connecting rod which is mechanically coupled to the closure disk,wherein the connecting rod can be displaced linearly along its connecting rod axis in the two displacement directions and hence the closure disk is displaceable substantially parallel to the valve seat between;
a position uncovering the opening; and
an intermediate position in which said disk is pushed over the opening and in which the closing side is present at least partly in a position opposite the valve seat, substantially parallel and a distance away,at least two limbs which are parallel and a distance apart in the displacement direction of the connecting rod,each of the limbs in each casebeing pivotably mounted at one limb end on the back of the closure disk which is opposite the closing side, via a first joint, andbeing pivotably mounted at the other limb end on a support via a second joint,the at least two limbs, the back of the closure disk and the support forming a parallelogram which is articulated by the first joints and second joints so that the closure disk and the support are pivotable in the two displacement directions of the connecting rod, parallel and a distance apart,each of the limbs, with the respective first joint and the respective second joint, forming a common integral part which comprises a resilient material, the first joint and the second joint being formed in each case from a thin-walled, flexible section on the limb, andan engagement element which is ordered and formed in such a way that a section of the articulated parallelogram is prevented from further displacement in the closing direction of the connecting rod in the closing direction of the connecting rod after reaching the intermediate position, the limbs swivelling out on further displacement of the connecting rod in the closing direction so that the closure disk is pressed with its closing side onto the valve seat in the closed position and the opening is closed gas-tight.
6 Assignments
0 Petitions
Accused Products
Abstract
A vacuum gate valve includes a closure disk for gas-tight closing of an opening. A connecting rod with which the closure disk is coupled is linearly adjustable by means of a linear drive unit and the closure disk is thus displaceable between a position uncovering the opening and an intermediate position pushed over the opening. At least two limbs are pivotably mounted at one limb end on the back of the closure disk via a first joint and at the other limb end on a support via a second joint to press the closure disk into the closed position. The limbs, the back and the support form an articulated parallelogram. Each of the limbs forms, with the respective first and second joints, a common integral part which includes a resilient material, the first joint and the second joint being formed by a flexible section on the limb.
33 Citations
16 Claims
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1. A vacuum gate valve comprising
a valve wall which has an opening and a valve seat running around the opening; -
a closure disk having a closing side for substantially gas-tight closing of the opening; at least one connecting rod which is mechanically coupled to the closure disk, wherein the connecting rod can be displaced linearly along its connecting rod axis in the two displacement directions and hence the closure disk is displaceable substantially parallel to the valve seat between; a position uncovering the opening; and an intermediate position in which said disk is pushed over the opening and in which the closing side is present at least partly in a position opposite the valve seat, substantially parallel and a distance away, at least two limbs which are parallel and a distance apart in the displacement direction of the connecting rod, each of the limbs in each case being pivotably mounted at one limb end on the back of the closure disk which is opposite the closing side, via a first joint, and being pivotably mounted at the other limb end on a support via a second joint, the at least two limbs, the back of the closure disk and the support forming a parallelogram which is articulated by the first joints and second joints so that the closure disk and the support are pivotable in the two displacement directions of the connecting rod, parallel and a distance apart, each of the limbs, with the respective first joint and the respective second joint, forming a common integral part which comprises a resilient material, the first joint and the second joint being formed in each case from a thin-walled, flexible section on the limb, and an engagement element which is ordered and formed in such a way that a section of the articulated parallelogram is prevented from further displacement in the closing direction of the connecting rod in the closing direction of the connecting rod after reaching the intermediate position, the limbs swivelling out on further displacement of the connecting rod in the closing direction so that the closure disk is pressed with its closing side onto the valve seat in the closed position and the opening is closed gas-tight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification