Fog cannons convert liquid water into a mist for dust suppression. Therefore, the water pump's role in operation is self-evident, and the water pressure significantly impacts the spray effect. So, how do you adjust the water pressure of a fog cannon? First, we need to know that fog cannons typically use plunger pumps or centrifugal pumps. Centrifugal pumps use the rotation of the impeller to generate centrifugal force, throwing the liquid in the impeller channel towards the surrounding area and flowing into the pump casing under centrifugal force. The pump body itself cannot adjust the spray pressure; it can only be adjusted through external mechanisms. Plunger pumps use the reciprocating motion of the plunger to change the volume of the pump chamber, thus achieving the purpose of drawing out liquid.
Adjusting the water pressure of the plunger pump in a fog cannon involves the following steps:
1. Close the pump outlet valve, loosen the pressure fixing nut, loosen the pressure adjustment knob, and then pull the pressure adjustment handle to the top.
2. Start the water pump to maintain normal operation, and then push the pressure adjustment handle all the way down. 1. Adjust the pressure adjustment knob to maintain the pressure between 1.5 and 3.5 MPa. The factory setting is 2.5 MPa. After adjustment, tighten the pressure fixing nut.
2. Open the water pump outlet valve to begin spraying. Note that the metering pump current must not exceed the motor's rated current; otherwise, the water pressure needs to be reduced before operation.
