MOUNTING OF A VALVE PLATE ON A VALVE ROD

• US 20110108750A1
• Filed: 01/19/2011
• Published: 05/12/2011
• Est. Priority Date: 12/11/2008
• Status: Active Grant

• Current Assignee: VAT Holding AG (VAT Group AG)
• Original Assignee: VAT Holding AG (VAT Group AG)
• Inventors: Ehrne, Florian, Blecha, Thomas
• Granted Patent: US 8,678,344 B2
• Time in Patent Office: Days
• US Class Current: 251/319
• CPC Class Codes: F16K 3/188 by means of hydraulic forces
• CPC Class Codes: F16K 3/314 Forms or constructions of slides; Attachment of the slide to the spindle
• CPC Class Codes: F16K 51/02 specially adapted for high-vacuum installations

Abstract

A mounting of a valve plate (1) on a valve rod (2) using a cross member (3) extending transversely with respect to the valve rod (2) is provided. The cross member (3) is connected at a central connecting point (4) to the valve rod (2) and is connected at least two lateral connecting points (5, 6), which are situated on both sides of the central connecting point (4), to the valve plate (1). The cross member (3) has a spacing (a) from the valve plate (1) in a central section (17) which comprises the central connecting point (4) and sections of the cross member (3) adjacent to the central connecting point (4) at both sides. By a twisting of the cross member (3), the valve plate (1) can be pivoted relative to the valve rod (2) about a pivot axis (19) which is at right angles to the valve rod.

Claims

1. A valve plate suspension system comprising a valve plate (1) supported on at least one valve rod (2, 2a, 2b) by a crossbar (3) extending transverse to the valve rod (2, 2a, 2b),

the crossbar (3) is connected to the valve plate (1) at lateral valve-plate connection points (5, 6) and the at least one valve rod (2) is connected to the crossbar (3) at least one valve-rod connection point (4, 4a, 4b) of the crossbar (3) lying between the lateral valve-plate connection points (5, 6), and the crossbar (3) has a spacing (a) from the valve plate (1) in a middle section (17) of the crossbar (3), with the middle section encompassing the at least one valve-rod connection point (4, 4a, 4b) and adjacent sections of the crossbar (3) on both sides of the at least one valve-rod connection point, and

the valve plate (1) is pivotable about a pivot axis (19) that extends at a right angle to the valve rod (2, 2a, 2b) relative to the at least one valve rod (2, 2a, 2b) through a torsion of the crossbar (3) and the crossbar (3) twists when the valve plate (1) pivots relative to the at least one valve rod (2).

2. Suspension according to claim 1, wherein the crossbar (3) has a single-material construction.

3. Suspension according to claim 1, wherein the at least one valve-rod connection point of the crossbar (3) to the valve rod (2) includes at least one connection screw (7).

4. Suspension according to claim 1, wherein the crossbar (3) and the valve plate (1) have single-material constructions.

5. Suspension according to claim 1, wherein the lateral valve-plate connection points (5, 6) of the crossbar (3) to the valve plate (1) are formed by connection screws (8, 9).

6. Suspension according to claim 1, wherein the crossbar (3) is connected to the valve plate (1) by two of the valve-plate connection points (5, 6) of which one lies on one side and the other lies on the other side of the at least one valve-rod connection point (4, 4a, 4b).

7. Suspension according to claim 1, wherein the crossbar (3) is connected to the valve plate (1) by four of the valve-plate connection points (54, 55, 56, 57) of which two of the valve-plate connection points (54, 55) lie on one side and the other two of the valve-plate connection points (56, 57) lie on the other side of the at least one valve-rod connection point (4, 4a, 4b).

8. Suspension according to claim 1, wherein a pivoting of the valve plate (1) is realized relative to the at least one valve rod (2, 2a, 2b) about the pivot axis (19) of at least 0.2°

by a torque of 80 Nm acting on the crossbar (3) about the pivot axis (19).

9. Suspension according to claim 8, wherein a pivoting about the pivot axis (19) of at least 0.3°

is realized by a torque of 80 Nm acting on the crossbar (3) about the pivot axis (19).

10. Suspension according to claim 1, wherein the pivot axis (19) has a distance (b) from a middle line (60) that lies parallel to the pivot axis (19) and extends, for an arrangement in which an elastic seal (26) is located on the valve plate (1), centrally between intersecting points of the elastic seal (26) with a longitudinal axis (20) of the at least one valve rod (2) or extends, for an arrangement in which a sealing face on the valve plate (1) is provided for interacting with an elastic seal arranged on a valve seat, centrally between intersecting points that have sections of the sealing face provided for interacting with the elastic seal with the longitudinal axis (20) of the at least one valve rod (2).

11. Suspension according to claim 1, wherein the at least one valve rod (2) is a single valve rod and the valve-rod connection point (4) is centrally located.

12. Suspension according to claim 1, wherein the at least one valve rod comprises two parallel valve rods (2a, 2b), each of which is connected to the crossbar (3) at the valve-rod connection points (4a, 4b).

13. Vacuum valve comprising a valve plate (1) and at least one valve rod (2, 2a, 2b) on which the valve plate (1) is suspended and by which the valve plate (1) can be adjusted between an open position in which the vacuum valve is opened and a closed position in which the vacuum valve is closed and the valve plate (1) seals a valve opening (22), a crossbar (3) is connected to the valve plate (1) at lateral valve-plate connection points (5, 6) and the at least one valve rod (2) is connected to the crossbar (3) at least one valve-rod connection point (4, 4a, 4b) of the crossbar (3) lying between the lateral valve-plate connection points (5, 6), and the crossbar (3) has a spacing (a) from the valve plate (1) in a middle section (17) that encompasses the at least one valve-rod connection point (4, 4a, 4b) of the crossbar (3) and adjacent sections of the crossbar (3) on both sides of this connection point, and

the valve plate (1) is pivotable relative to the at least one valve rod (2, 2a, 2b) by a torsion of the crossbar (3) about a pivot axis (19) that extends at a right angle to the valve rod (2, 2a, 2b) and the crossbar (3) twists for pivoting of the valve plate (1) relative to the at least one valve rod (2).

14. Vacuum valve according to claim 13, wherein the valve plate (1) can be moved starting from an open position in which it is located free of a valve opening (22) by at least one first piston-cylinder unit (23) shifting the at least one valve rod (2, 2a, 2b) in an axial direction into an intermediate position in which it covers the valve opening (22) but is lifted from a valve seat (24) surrounding the valve opening (22), and the valve plate (1) can be moved starting from the intermediate position by at least one second piston-cylinder unit (27) by which the at least one valve rod (2, 2a, 2b) can be pivoted about an axis (39) or can be moved in a direction at a right angle to a longitudinal axis (20) thereof into a closed position in which the valve plate (1) is pressed onto the valve seat (24).