| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid material pump for a beverage feeding device wherein a defective feeding of a liquid material, and the leakage of carbon dioxide due to troubles such as cracks, breaking, slipping off of a spring used in the liquid material pump even when the feeding of a beverage is repeated, regarding the liquid material pump for the beverage feeding device wherein the liquid material filled in a material container such as a BIB is fed out by a gas pressure. SOLUTION: This liquid material pump for the beverage feeding device is equipped with a pipe connecting member 32, a liquid material pump chamber 36, a pipe connecting member 34, a carbon dioxide flow-in port 39, a carbon dioxide chamber 44, a carbon dioxide discharging port 41, a diaphragm 42, an actuating valve gas purge 48, and a torsion spring 52. In this case, the liquid material from the BIB 21 flows into the pipe connecting member 32. The pipe connecting member 34 is used to feed out the liquid material. The gas flows in through the carbon dioxide flow-in port 39. The gas is discharged from the carbon dioxide discharging port 41. The actuating valve gas purge 48 controls the flowing-in/discharging of the gas. The torsion spring 52 assists the sliding of the actuating valve gas purge 48. |
