Valve device for volumetric metering of pasty food product, and volumetric doser

摘要

Valve device for dosing volumetric ° pasty food product, comprising: a valve body (1) with a cavity (2) of revolution having a first opening (3) radial or tangencialconectada to an inlet duct (6), a second opening (4) axially connected to a metering chamber (7), anda third opening (5) radially or tangentially connected to an outlet duct (8), a valve plug (9) rotatably disposed within said cavity ( 2) of said valve body (1); Yunos drive means (10, 11) for moving said valve member (9) between a first position, in the first quedichas and second apertures (3, 4) are mutually communicated and the third opening (5) is sealed parapermitir flow of pasty food product from said inlet duct (6) to said dosing chamber (7), and a second position in which the first opening (3) is sealed and the second and third openings (4, 5) ester'mutuamente Connecting to allow a flow of pasty food product from the metering chamber (7) adicho outlet duct (8), wherein said valve plug (9) has an outer surface of revolution (12) about a rotation ejede (E ) and an oblique surface (13) inclined to said axis of rotation (E), wherein said oblique surface (13) this permanently faces the second opening (4) axially and alternately facing the first and terceraaberturas (3, 5) radial or ta ngenciales when the valve plug (9) is in said first and second positions, respectively, while one sealing portion of said outer surface of revolution (12) obturaalternadamente the third and first openings (5, 3) when the shutter valve ( 9) is in the first and segundaposiciones, respectively, the outer surface of revolution (12) of the valve plug (9) that provided by a thin wall derevoluciOn (14) within which is located the slanted surface (13), formed in said thin wall derevolucion (14) a window (15) facing the oblique surface (13), placing said window (15) in coincidenciacon the first and third openings (3, 5) of the cavity (2) of the body valve (1) in the first and segundaposiciones respectively; andthe thin wall of revolution (14) is thin enough to provide the window (15) about bordescortantes able to cut the pasty food product when the valve member (9) rotates relative to the cavity (2) of the valve body (1 ).