| 摘要 |
PROBLEM TO BE SOLVED: To realize a spray can filling gear pump equipped with a simple and inexpensive structure with capability to regulate filling pressure and keep its pressure constant. SOLUTION: There is provided the spray can filling gear pump in which a couple of spur gears 20, 20' engaging with each other and a case 21 for housing the couple of spur gears 20, 20' in a rotatable manner are included, and an inlet 22 and an outlet 28 are drilled in the case 21. In the spray can filling gear pump, there is provided a flow path 29 for connecting the inlet 22 and the outlet 28 and then in the flow path 29, a pressure regulating device 31 comprising a one-way valve 32 that opens only in a direction from the outlet 28 to the inlet 22 and a regulating screw 33 for regulating opening pressure of the one-way valve 32. COPYRIGHT: (C)2005,JPO&NCIPI
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