Isostatic press for high-pressure treatment of bulk material, especially of liquid food products charged with particles

摘要

Food, pharmaceutical or cosmetic products are given a high pressure treatment in the claimed isostatic press. The press is made of a cylinder, sealed at the top (3) and bottom, with the enclosed space divided into two chambers by a free moving piston. One chamber contains pressurisation fluid, while the second contains product for treatment. Each chamber has inlet and outlet pipes equipped with valves. The valves through which product enters and leaves the treatment chamber are incorporated in the top (3A) of the press, and the valve which allows pressurisation fluid to be released is incorporated in the base. These valves consist of a tube (21 and 21A) through which liquid can pass to enter or leave the press, ending in the valve seat (27 and 27A). The valve itself includes a rod (24 and 24A) passing inside the tube, and a body (25 and 25A) which fits into the seat.