| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a chemical injection unit which can stably inject a sterilizing agent. <P>SOLUTION: In a chemical injection unit 16, the amount of a chemical proportional to a flow amount in a water pipe 14 is injected into the water pipe 14. Further, the chemical injection unit 16 is configured to include: the first control means 26 for injecting chemicals from an injection pump 30 into the water pipe 14 based on the number D of generations of the pulse signals per unit time from a flow amount sensor 24 at a stop mode, and then setting a driving mode; the second control means 27 for injecting chemicals into the water pipe 14 with a division treatment by pulse signals at a driving mode; and a third control means 28 for setting a stop mode based on the number D of generations of the pulse signals per unit time from the flow amount sensor 24 at the driving mode. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
