New simple 555 dust removal delay photoelectric controller

Photocoupler

As shown in the figure, the controller includes a buck regulator source, a photo-controlled single-stabilization, and a trigger control circuit.
The power supply of this circuit is stepped down by two parallel lamps, and then rectified and regulated, and output 6V for 555 as a voltage source. The light is illuminated as a light source for the photoelectric controller. After power-on, the light is on, the photoresistor RG is low-resistance after being illuminated, the 555's 2 feet are high, 555 is in reset state, 3 is low, SCR is blocked, the solenoid valve is closed, and the water curtain is sprayed inside the tube. The pressure is large, and the nozzle sprays water to reduce dust.