Mixer for multi-components substance for dental casting
AssigneeZhermack S.p.A.
InventorsTiziano Busin, Massimo Rossi
Life of this patent
Estimating the term…
Abstract
A mixer adapted to mix a base and a catalyst to make a paste for dental castings has a holding body adapted to receive the components to be mixed through two inlets (3, 4). The components are conveyed into a mixing chamber (6) where a dynamic rotor (7) is present which, through suitable fins (12), allows mixing of the two components. Downstream of the dynamic mixing (7) along a feeding direction (A) of the material, a static-mixing structure (9) is also provided which is equipped with a predetermined number of shaped elements (10) to enable further mixing of the materials before the latter come out of the mixer.
Claims32
A mixer for viscoelastic two-component substances for dental castings, comprising:
- a holding body which at one end has at least one inlet for a first component to be mixed and at least one inlet for a second component to be mixed, the holding body further having an outlet disposed to an opposite end relative to the inlets and in fluid communication with them, the outlet being adapted to enable discharge of the mixed substance, the holding body defining a mixing chamber at the inside thereof;
- a dynamic-mixing element having at least one portion placed inside the mixing chamber, movable in rotation around its longitudinal extension axis and having fins lapping said holding body to enable mixing of the two components,
- a static-mixing structure provided downstream of the dynamic-mixing element along a material feeding direction, the static-mixing structure comprising a predetermined number of shaped elements rigidly secured to the holding body and having the form of an Archimedean screw portion for forcing the material passing therethrough to spin around the longitudinal extension axis and further mixing the two components before discharge from the mixer.
A mixer for viscoelastic two-component substances for dental castings, comprising:
- a holding body which at one end has at least one inlet for a first component to be mixed and at least one inlet for a second component to be mixed, the holding body further having an outlet disposed to an opposite end relative to the inlets and in fluid communication with them, the outlet being adapted to enable discharge of the mixed substance;
- a mixing chamber defined within the holding body and presenting:
- a first region acting on said components for mixing the same, said first region having a first passage section, and a second region acting on the components on which the first region has already acted, said second region having a second passage section;
- said first passage section having an area wider than the area of said second passage section;
- a dynamic-mixing element rotatable within said first region of the mixing chamber and acting on the whole first passage section,
- a static-mixing structure provided downstream of the dynamic-mixing element and comprising an Archimedean screw structure acting on the whole second passage section.
A mixer for viscoelastic two-component substances for dental castings, comprising:
- a holding body which at one end has at least one inlet for a first component to be mixed and at least one inlet for a second component to be mixed, the holding body further having an outlet disposed to an opposite end relative to the inlets and in fluid communication with them, the outlet being adapted to enable discharge of the mixed substance,
- a mixing chamber defined within the holding body and presenting:
- a first region acting on said components for mixing the same, said first region having a first passage section, and a second region acting on the components on which the first region has already acted, said second region having a second passage section;
- said first passage section having an area wider than the area of said second passage section;
- a dynamic-mixing element rotatable around its longitudinal extension axis within said first region of the mixing chamber and acting on the whole first passage section, the dynamic-mixing element having fins lapping said holding body,
- a static-mixing structure introducing an obstruction provided downstream of the dynamic-mixing element along a material feeding direction, the static-mixing structure comprising a predetermined number of shaped elements rigidly secured within the second region of the holding body intercepting the whole second passage section of the substances,
- the dynamic-mixing element being wider than the static-mixing structure with regard to a dimension transverse to the longitudinal extension axis.
Dependencies are inferred from the claim text.