초록 ▼

A filling valve (12) including: a hollow housing (21); a moving valve assembly (24) slidingly mounted in the housing (21), the moving valve assembly (24) and the hollow housing (21) together defining a liquid chamber (30) and a gas chamber (32); a liquid inlet (46) for putting the liquid chamber (30

A filling valve (12) including: a hollow housing (21); a moving valve assembly (24) slidingly mounted in the housing (21), the moving valve assembly (24) and the hollow housing (21) together defining a liquid chamber (30) and a gas chamber (32); a liquid inlet (46) for putting the liquid chamber (30) into communication with a liquid supply pipe (14); a gas inlet (47) for putting the gas chamber (32) into communication with a gas supply pipe (17); wherein the hollow housing (21) and the moving valve assembly (24) together define a medium chamber the (33) located between the liquid chamber (30) and the gas chamber (32), and wherein the filling valve (12) further comprises: a first diaphragm (35) linking the valve assembly (24) to the housing (21) between the liquid chamber (30) and the medium chamber (33), and a second diaphragm (36) linking the valve assembly (24) to the housing (21) between the gas chamber (32) and the medium chamber (33).

대표청구항 ▼

1. A filling valve (12) comprising: a hollow housing (21);a moving valve assembly (24) slidingly mounted in the housing (21), said moving valve assembly (24) and said hollow housing (21) together defining a liquid chamber (30) and a gas chamber (32);a liquid inlet (46) for putting said liquid chambe

1. A filling valve (12) comprising: a hollow housing (21);a moving valve assembly (24) slidingly mounted in the housing (21), said moving valve assembly (24) and said hollow housing (21) together defining a liquid chamber (30) and a gas chamber (32);a liquid inlet (46) for putting said liquid chamber (30) into communication with a liquid supply pipe (14);a gas inlet (47) for putting said gas chamber (32)into communication with a gas supply pipe (17);wherein said hollow housing (21) and said moving valve assembly (24) together define a medium chamber (33) located between the liquid chamber (30) and the gas chamber (32), and wherein said filling valve (12) further comprises:a first diaphragm (35) linking the valve assembly (24) to the housing (21) between the liquid chamber (30) and the medium chamber (33), anda second diaphragm (36) linking the valve assembly (24) to the housing (21) between the gas chamber (32) and the medium chamber (33),and wherein said moving valve assembly (24) includes a hollow valve rod (25) provided with a through hole (43) opening in said gas chamber (32) at an upper end (37) of said valve rod (25). 2. The filling valve (12) according to claim 1, further comprising a diaphragm failure sensor (73), mounted on the housing (21) at the level of the medium chamber (33). 3. The filling valve (12) according to claim 2, wherein the diaphragm failure sensor (73) comprises a piston (74) slidingly mounted in a bore (75) formed in the housing (21) at the level of the medium chamber (33), and a signal member (76) attached to the piston (74) and visually accessible from the outside of the housing (21). 4. The filling valve according to claim 3, wherein said signal member (76) is formed of a pellet attached to one end of the piston (74) opposed to the medium chamber (33). 5. The filling valve (12) according to claim 1, wherein said hollow valve rod (25) is slideable with respect of the housing (21) between an open position in which the valve rod (25) opens an aperture (23) in the housing (21), thereby allowing liquid to flow from the liquid chamber (30) through said aperture (23), and a closed position in which the valve rod (25) closes said aperture (23), and wherein said valve assembly (24) further comprises a piston (26) slidingly mounted in the housing between an open position in which a lower end (51) of the piston (26) is spaced from the upper end (37) of the valve rod (25), thereby allowing gas to pass from the gas chamber (32) to the through hole (43) in the valve rod (25) through the opening formed at the upper end (37) thereof, and a closed position in which the lower end (51) of the piston (26) is in sealing contact with the upper end (37) of the valve rod (25). 6. The filling valve according to claim 5, comprising a return spring (50) permanently biasing the valve rod (25) toward its open position. 7. The filling valve according to claim 6, wherein said return spring (50) is received in said medium chamber (33). 8. The filling valve according to claim 5, further comprising a cup (65) received in the gas chamber (32), and slidingly mounted with respect of the piston (26) between a lower position, in which a lower edge (67) of the cup (65) abuts against the upper end (37) of the valve rod (25), and a higher position in which the cup (65) is spaced from the upper end (37) of the valve rod (25), said cup (65) being provided with cut-outs (69) for allowing gas to pass from the gas chamber (32) to the through hole (43) through the cut-outs (69), said valve further comprising a return spring (71) permanently biasing said cup (65) toward its lower position. 9. The filling valve (12) according to claim 8, wherein, in its open position, the piston (26) maintains the cup (65) in its higher position. 10. A filling machine (1) comprising a rotary carrousel (9) equipped with a plurality of valves (12) according to claim 1, and further comprising a storage tank (3) comprising a liquid space (4) in communication with the liquid chamber (30) of each valve (12) and an overlying gas space (6) in communication with the gas chamber (32) of the valve (12).