Viscous liquid dispensing pump

Details Viscous liquid dispensing pump Viscous liquid dispensing pump

B - Operations, Transporting

05

B

B05B 11/00 (2006.01) B67D 7/60 (2010.01) A47K 5/12 (2006.01) B65D 47/34 (2006.01) F04B 33/00 (2006.01)

Patent

CA 2504790

A dispensing pump (12) for a viscous liquid comprises a cylinder (16), a piston (24) mounted for reciprocation within said cylinder (16), an inlet (50) for admitting liquid to be dispensed into said cylinder (16) and a ball check valve (52) arranged selectively to open and close said inlet opening. The ball valve (52) is retained in position by a spring (58) having a variable diameter. The piston (24) has a dispensing passage (40) in fluid communication with said cylinder (16) and with a self sealing dispensing valve (38). The pump (12) further comprises a sliding cut-off valve (70) arranged selectively to open and close fluid communication between the piston dispensing passage (40) and the cylinder (16) as the piston (24) reciprocates within the cylinder (16).

L'invention concerne une pompe distributrice (12) d'un liquide visqueux. Cette pompe comprend un cylindre (16), un piston (24) monté de manière à effectuer un mouvement de va-et-vient à l'intérieur dudit cylindre (16), une entrée (50) d'admission d'un liquide à distribuer dans ledit cylindre (16) et un clapet à bille (52) agencé sélectivement de manière à ouvrir et à fermer ladite ouverture d'entrée. Le clapet à bille (52) est retenu en position par un ressort (58) ayant un diamètre variable. Ledit piston (24) présente un passage de distribution (40) en communication fluide avec ledit cylindre (16) et avec une vanne de distribution auto-obturante (38). Ladite pompe (12) comprend en outre une soupape de détente coulissante (70) agencée sélectivement de manière à ouvrir et à fermer la communication fluide entre le passage de distribution à piston (40) et le cylindre (16) lorsque le piston (24) effectue un mouvement de va-et-vient dans le cylindre (16).

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