초록 ▼

The apparatus is comprised of a dosing chamber which is internally provided with a piston displaceable freely by means of pasty material introduced through a first extremity of said chamber from a first position to a second position, the piston being then actuated by means of a pressure fluid introd

The apparatus is comprised of a dosing chamber which is internally provided with a piston displaceable freely by means of pasty material introduced through a first extremity of said chamber from a first position to a second position, the piston being then actuated by means of a pressure fluid introduced through a second extremity to return to said first position, thereby displacing a volume being ejected through the extremity which is associated by sealed closing means to an opening of a housing wherein is housed a valve body with means to move the body inside the housing thereby communicating an inlet with said chamber, and alternatingly, communicating said chamber with an outlet conduit having emptying piston.

대표청구항 ▼

1. Volumetric dosing apparatus for pasty material, of the type which includes a dosing chamber having an axial development, provided in its interior with a plunger which can be freely moved by a pasty material introduced from a first end of said chamber from a first position up to a second position

1. Volumetric dosing apparatus for pasty material, of the type which includes a dosing chamber having an axial development, provided in its interior with a plunger which can be freely moved by a pasty material introduced from a first end of said chamber from a first position up to a second position and to be thereafter driven in the opposite direction by means of fluid under pressure introduced from a second end of the chamber, to come back to said first position moving a dosed volume of pasty material delimited between first and second positions to expel it through said first end, said chamber being associated at its first end to a first opening of a housing which houses a valve body said housing having a second opening connected to an inlet duct of pasty material and a third opening connected to an outlet duct of pasty material, driving means being provided for moving said valve body within said housing so that said second opening remains communicated with said dosing chamber while said dosing chamber communicates successively and alternately with said third opening through the valve body, characterized in that said chamber is hinge-joined with respect to the housing, and it can tilt to provide an access to the housing, valve body and dosing chamber for their cleaning and/or withdrawal.