Anti-interference flame detection device and method capable of accurately collecting signals

The invention relates to an anti-interference flame detection device and method capable of accurately collecting signals, and belongs to the technical field of smelting and casting equipment and methods. According to the technical scheme, a fixed metal tube (4) is inserted into a round hole formed in an angle-shaped metal guard plate side plate (3), and a flame detection probe (1) and an adjustable metal tube (6) are inserted into tube holes in the two sides of the fixed metal tube (4) respectively; the upper edge of the angle-shaped metal protection plate side plate (3) is fixedly arranged below the ladle cover bearing seat; and a flame probe power supply proximity switch (10) is arranged above the ladle cover lower limit proximity switch (9) and is connected with a power supply of the flame detection probe (1). The ignition device has the beneficial effects that the burner of the igniter is accurately positioned in the ignition process, signals are completely eradicated from being received by mistake under