Machines for storing, transporting and conveying of cellulose material and digester liquid or impregnation liquid, used in connection with the digesting and production of cellulose pulp and machine parts featuring pumps, pipes for conveying the cellulose material or digester liquid, valves, extraction screens, towers for cooking the cellulose material and digester liquid or impregnation liquid, top separators in digester vessels and impregnation vessels for such machines