Patent ID: 8746962

Claim:
Head ( 1 ) for a high pressure homogeniser for pumping and pressurizing products containing solids and fibres, comprising: a block ( 2 ) defining a passage ( 3 ) for the products from an intake area ( 4 ) to a delivery area ( 5 ); a piston ( 6 ) movable axially in the block ( 2 ) with reciprocating motion, to pump the products in said passage ( 3 ), from the intake area ( 4 ) to the delivery area ( 5 ); intake ( 7 ) and delivery ( 8 ) valves positioned internally to the block ( 2 ) and operatively active on said passage ( 3 ) to open it/close it as a function of a motion of the products in the passage, characterised in that, in combination: said passage ( 3 ) is a straight passage free of obstacles (a) positioned in the block ( 2 ) in position of non interference with the motion of the piston ( 6 ) and (b) positioned in the block ( 2 ) in a direction rectilinear and orthogonal to the axis of the piston ( 6 ); the intake ( 7 ) and delivery ( 8 ) valves are operatively inserted in said passage ( 3 ) in intermediate position between said intake ( 4 ) and delivery ( 5 ) area; a frontal flange ( 14 ) is removably coupled to the block ( 2 ) for accessing the passage ( 3 ) and a cylinder ( 12 ) for the sliding of the piston ( 6 ), the cylinder ( 12 ) having a lateral surface, the lateral surface of the cylinder ( 12 ) adjacent the piston ( 6 ) being defined by the block ( 2 ); a sealing member ( 11 ) interacting with the piston ( 6 ) and fastened to the block ( 2 ) externally relative to the cylinder ( 12 ), said sealing member ( 11 ) housing a dynamic gasket ( 13 ) which is located externally to the block ( 2 ) relative to the cylinder ( 12 ).