Lifting device for the closure plate of compressor valves
AssigneeHoerbiger Ventilwerke Aktiengesellschaft
InventorErich H. Machu
Life of this patent
Estimating the term…
Abstract
A lifting device for controlling the movement of the closure plate of a compressor valve comprises a first gripper part which is connected to the compressor valve to be movable toward and away therefrom; a regulating spring which is in contact with the first gripper part to bias it toward the compressor valve; and a second gripper part which is movable with respect to the first gripper part and the compressor valve, the second gripper part including lift elements having lifting prongs which can contact the closure plate, tension screws which connect the lift elements to the first gripper part and provide end stops for the movement of the lift elements, and damper springs which damp the relative movement of the lift elements relative to the first gripper part.
Claims13
A lifting device for controlling the movement of the closure plate of a compressor valve, said compressor valve defining an axis line therethrough and providing a valve seat therein, said closure plate, when moved in a first direction along said axis line due to fluid pressure within said compressor valve, becoming seated in said valve seat to shut off fluid flow therethrough, and when moved in a second direction along said axis line, allowing fluid to pass through said valve seat, said lifting device comprising
- a first gripper part which is connectable to said compressor valve so as to be movable toward and away from said compressor valve along said axis line,
- a regulating spring in contact with said first gripper part to bias said first gripper part toward said compressor valve, and
- a second gripper part which comprises a plurality of lift elements having lifting prongs which can contact said closure plate to move it in said second direction away from said valve seat, a plurality of tension screws which movably mount said lift elements with respect to said first gripper part and provide end stops to control the distance said lift elements can move relative to said first gripper part, and a plurality of damper springs for damping the relative movement of said lift elements relative to said first gripper part.
A lifting device for controlling the movement of the closure plate of a compressor valve, said compressor valve defining an axis line therethrough and providing a valve seat therein, said closure plate, when moved in a first direction along said axis line due to fluid pressure within said compressor valve, becoming seated in said valve seat to shut off fluid flow therethrough, and when moved in a second direction along said axis line, allowing fluid to pass through said valve seat, said lifting device comprising
- a first gripper part which is connectable to said compressor valve so as to be movable toward and away therefrom along said axis line, said first gripper part including a radially-extending flange, said flange having a first side facing said compressor valve and a second side facing away from said compressor valve,
- a regulating spring positioned against said first gripper part to bias said first gripper part toward said compressor valve, and
- a second gripper part which is movably mounted on the flange of said first gripper part so as to be movable toward and away from said compressor valve in parallel with said axis line, said second gripper part including a lift element located on the first side on said flange, said lift element including prongs which can contact said closure plate to move it in said second direction away from said valve seat;
- a weight means located on the second side of said flange;
- tie screws which extend through said flange around the circumference thereof and which connect said lift element with said weight means, said weight means being mounted to be axially movable along said tie screws, and damper springs mounted around said tie screws and between said flange and said weight means to bias said weight means away from said flange, the combined forces of said damper springs being at least as great as the force applied by said regulating spring against said first gripper part.
Dependencies are inferred from the claim text.