FIELD: cleaning water through filtration. SUBSTANCE: automatic filtering plant includes grain filter, pressure building tank equipped with pressure setter made in form of chamber with lateral spray former and bottom taper sand receiver whose extension is bottom spray former. Tank includes also pulp receiving chamber located below pressure setter in zone of Flight of spray and connected with spray receiving chamber by means of pipe. EFFECT: reliable protection of plant against entrapping sand with water; improved quality of cleaning. 1 dwg
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