MORTAR APPLYING NOZZLE Russian patent published in 2000 - IPC

FIELD: mortar application equipment in construction, coal and other branches of industry. SUBSTANCE: nozzle has body, mortar supplying channel, compressed air supplying channel, and chamber continuously connected to Laval nozzle. Core is positioned inside chamber. Rod is positioned inside core. One end of rod is connected to stem of pneumatic cylinder of unidirectional action and other end is extending into Laval nozzle. Other end of rod is made in the form of truncated cone. Rod is provided with channel serving as pressure sensor. Compressed air is fed from pneumatic system via main through controlled throttle valves. Throttle control member is communicated via main with rod channel. Such construction provides continuous controlling of spray beam section area. Mortar spraying nozzle may be used as module in robotized complexes for applying various coats, in particular, for finishing works in construction industry. EFFECT: increased efficiency, wider operational capabilities and improved quality of coating. 1 dwg