| 摘要 |
PROBLEM TO BE SOLVED: To facilitate ejection control from a nozzle by interposing a valve rod for holding a regulation valve disc, abutting on a regulation valve disc disposed on the magnetic head side of a flow regulation valve, at a flange part between the flow regulation valve and an electromagnetic movable piece and adjusting the magnetic air gap between the magnetic head and the electromagnetic movable piece by converting the thickness dimensions of the flange part. SOLUTION: A pump 1, a flow regulation valve 2, a solenoid valve 3 and a return nozzle 4 are integrated into an annular combined mechanism and fuel oil in a fuel oil tank is introduced through piping and the solenoid valve 3 to the channel 22 of a combined body 20. It is then fed through a joint combined body 34 to the return nozzle 4 by means of the solenoid pump 1 and ejected into a furnace 10 and burnt. The fuel oil returning from the return nozzle 4 is introduced from a return channel 33 through a check valve 30 and a filter 29 to the flow regulation valve 2. The flow regulation valve 2 is arranged to regulate the magnetic air gap between a magnetic head 27 and an electromagnetic movable piece 11 by interposing a valve rod 38 for holding a regulation valve disc 12 at a flange part between the flow regulation valve and the electromagnetic movable piece 11.
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