Process and apparatus for producing a ring unit for the valve parts of labyrinth valves
OwnerJohannes R. Smirrainventor
Life of this patent
Estimating the term…
Abstract
For producing the seat or valve member of a labyrinth valve a number of rings of different diameter are placed one inside the other as a workpiece with their blade-like edges turned in the same direction. The group of rings is then slipped over the middle guide or stem of a jig so that the downwardly turned blade-like edges on the rings come to rest against upwardly directed ring-like blades on the jig. These blades are designed with a form answering to the form of the other valve part with which the workpiece is to be used. The rings in the workpiece are pressed down against the blades for leveling them and are then welded together, for example by electron beam welding.
Claims9
In a process for making a ring unit for a cone labyrinth valve, said ring unit having at least two rings of which each has a blade-like edge, and being designed for use with a like ring unit in said valve for control of fluid motion by decreasing the distance between said units towards each other so that at least one blade-like edge of one said unit is between two ones of said edges on the other said unit causing fluid motion along a complexly folded path, the invention residing in the working steps of:
- firstly producing blade-like edges on rings with cylindrical faces, making up a workpiece by placing such rings together one inside the other with an outer face of at least one ring touching the inner face of an other ring placed round it;
- moving said workpiece towards a jig with ring-like blades answering to the form of said ring unit with which the rings in said workpiece are to be used in said valve so that said rings in said workpiece are in a position in relation to each other representative of their condition in use in said valve;
- and fixing said rings in said workpiece in relation to each other.
An apparatus for producing a ring unit for a labyrinth valve, said unit being made up of at least two rings of which each has a blade-like edge, said ring unit being designed for use with a like ring unit in said valve for control of fluid motion by decreasing the distance between said unit towards each other so that at least one blade-like edge of one said unit is between two ones of said edges on the other said unit causing fluid motion along a complexly folded path, the invention residing in that the apparatus has a jig body with at least two ring-like blades answering to the form of the blade-like edges in said valve, said blades of said jig having stop edges for acting against said rings of said ring unit which is to be made, a force producing system for keeping and pushing said rings in said units against said edges on said blades on said jig unit, and a welder for welding said rings together after being put in line with each other by said blades of said jig body.
Dependencies are inferred from the claim text.