US 4,381,897 AGranted

Installation for transporting fine-grained material

AssigneeKrupp Polysius AG

InventorsCarlos Arbeletche, Ingo Boelcke, Peter Poehlmann, Klaus Kirchner

Life of this patent

Estimating the term…

Loading patent…

Abstract

An installation for transporting fine-grained material to a consumer using two alternately filled and emptied pneumatic pressure vessels (3, 4) together with an outlet valve (12, 12') and a control nozzle (15, 15') in the material discharge pipe of each of the two pressure vessels. The control nozzles (15, 15') are connected to an air distributor (18) through which the control nozzle receives a reduced amount of compressed air when the material discharge pipe is shut off. With an installation such as this, a continuous and exactly metered delivery of fine-grained material is obtained without any mechanically moved parts in the delivery path and with a low rate of flow in the delivery pipe.

Claims5

Dependent claims

Apparatus for the continuous transport of fine-grained material from a supply thereof to a consumer, said apparatus comprising at least two pneumatic pressure storage vessels interposed between and communicating with said supply and said consumer, each of said vessels having a discharge pipe containing an outlet valve and a control nozzle in series with said valve;

means for alternately opening and closing each of said outlet valves for alternately emptying a selected one of said vessels;
conduit means for connecting each of said control nozzles to a source of compressed air for delivering compressed air to each of said control nozzles simultaneously;
and air distributor means in said conduit means operable to deliver to the control nozzle in series with the open one of said outlet valves a greater quantity of compressed air than is delivered to the control nozzle in series with the closed one of said outlet valves.

Dependencies are inferred from the claim text.