초록 ▼

A filling device (10) includes a tubular body (12) including, in an upper section (14), a feeding chamber (18), and provided with a nozzle (20) for the flow of the liquid, wherein a liquid feeding conduit (22) leads into the feeding chamber (18) through a feeding orifice (24), and including a plug (

A filling device (10) includes a tubular body (12) including, in an upper section (14), a feeding chamber (18), and provided with a nozzle (20) for the flow of the liquid, wherein a liquid feeding conduit (22) leads into the feeding chamber (18) through a feeding orifice (24), and including a plug (26) which is controlled in axial sliding inside the tubular body (12), between an open position and a closed position. The device includes a servo valve (42, 142) coaxial to the plug (26) which is arranged in the upper section (14) of the tubular body (12). The servo valve (42, 142) includes a wall (44, 144) which partly closes the feeding orifice (24), and the servo valve (42, 142) is pivotingly controlled about its axis (A1) so as to regulate the feeding flow rate by modifying the closure area of the wall (44, 144).

대표청구항 ▼

1. A device (10) for filling receptacles with a liquid, comprising: a generally tubular body (12);a liquid feed chamber (18) in an upper section (14) of the generally tubular body (12), the liquid feed chamber (18) having a bottom axial end, with provided with a nozzle (20) adapted for feed flow of

1. A device (10) for filling receptacles with a liquid, comprising: a generally tubular body (12);a liquid feed chamber (18) in an upper section (14) of the generally tubular body (12), the liquid feed chamber (18) having a bottom axial end, with provided with a nozzle (20) adapted for feed flow of the liquid from the feed chamber (18) to a receptacle in which a liquid feed duct (22) leads into the feed chamber (18) through a feed orifice (24);a stopper (26) that is controlled in sliding axially inside the tubular body (12) between an axial open position and an axial closed position, the stopper comprising an annular bearing surface (28) which rests axially against a matching seat (30) arranged between the feed chamber (18) and the nozzle (20), in the closed position; anda cylindrical valve (42, 142) coaxial with the stopper (26) that is arranged in the upper section (14) of the tubular body (12), the cylindrical valve (42, 142) comprising a peripheral stopping wall (44, 144) that is capable of partially closing off the feed orifice (24), when the stopper (26) occupies the open position, an area of closure of the peripheral wall (44, 144) being a function of the angular position of the cylindrical valve (42), and the cylindrical valve (42, 142) is controlled so as to pivot about an axis (A1) so as to regulate a value of the feed flow by modifying an area of closure of the peripheral wall (44, 144). 2. The device (10) as claimed in claim 1, wherein the cylindrical valve (42) comprises a tubular section (46) coaxial with the stopper (26) and with an external diameter substantially equal to an internal diameter of the upper section (14) of the tubular body (12), that is closed toward a top and that is open toward a bottom, in that the feed orifice (24) opens radially into the upper section (14) of the tubular body (12), in that the peripheral wall (44) of closure consists of the outer axial wall of the tubular section (46), and in that the tubular section (46) comprises a radial opening (50) that is positioned generally facing the feed orifice (24) when the stopper (26) occupies its open position, so as to have the feed duct (22) communicate with the feed chamber (18) through a central duct (52) of the tubular section (46). 3. The device (10) as claimed in claim 1, wherein the cylindrical valve (142) comprises a tubular section (146) coaxial with the stopper (26) comprising a closure finger (143) with an external diameter that is substantially equal to the internal diameter of the upper section (14) of the tubular body (12), in that the peripheral wall (144) of closure consists of the outer axial wall of the finger (143), and in that the feed duct (22) is closed when, the stopper (26) occupying its closed position, the finger (143) of the tubular section (146) is positioned angularly generally facing the feed orifice (24) in order to interrupt the communication with the feed chamber (18). 4. The device (10) as claimed in claim 1, wherein the cylindrical valve (42, 142) is connected in axial movement with the stopper (26). 5. The device (10) as claimed in claim 1, wherein the cylindrical valve (42) is connected in pivoting with the stopper (26) so that the angular pivoting of the cylindrical valve (42, 142) is controlled by the angular pivoting of the stopper (26). 6. The device (10) as claimed in claim 1, wherein the stopper (26) comprises a plunger core (58) which extends axially downward, from the bearing surface (28), into the nozzle (20). 7. The device (10) as claimed in claim 6, wherein the bottom end section of the nozzle (20) comprises a concave frustoconical wall (56) whose internal diameter decreases downward, in that the plunger core (58) comprises, at a bottom axial end of the plunger core, a convex frustoconical surface (60) substantially parallel to the concave frustoconical wall (56), a bottom axial end (62) of the convex frustoconical surface (60) is substantially radially aligned with a bottom axial end (64) of the concave frustoconical wall (56) when the stopper (26) occupies the closed position, and a diameter of the bottom axial end (62) of the convex frustoconical surface (60) is less than a diameter of the bottom axial end (64) of the concave frustoconical wall (56) so as to arrange an annular space (66) with a radial dimension that is just sufficient to cause a rising of the liquid by capillary action, at a time when the stopper (26) closes. 8. The device (10) as claimed in claim 1, wherein the bearing surface (28) is arranged on a ring (36) made of elastomer that is fitted to the body (38) of the stopper (26). 9. The device (10) as claimed in claim 2, wherein the cylindrical valve (42, 142) is connected in axial movement with the stopper (26). 10. The device (10) as claimed in claim 2, wherein the cylindrical valve (42) is connected in pivoting with the stopper (26) so that the angular pivoting of the cylindrical valve (42, 142) is controlled by the angular pivoting of the stopper (26). 11. The device (10) as claimed in claim 2, wherein the stopper (26) comprises a plunger core (58) which extends axially downward, from the bearing surface (28), into the nozzle (20). 12. The device (10) as claimed in claim 2, wherein the bearing surface (28) is arranged on a ring (36) made of elastomer that is fitted to the body (38) of the stopper (26).