Fire flow switch

Working principle of fire flow switch

The working principle of the fire flow switch is that when there is water flowing in the water flow switch and the water flow rate is ≥ 1.0L/min, the magnetic core inside the water flow switch is displaced by the water flow, and the displacement of the magnetic core drives the magnetic source to produce a magnetic control effect, causing the water flow switch to output a "on" signal. The automatic selection of fire flow switch Kuaiyiyou is included. The signal is input into the equipment control system, and the control function is achieved through the control system. When the water flow is less than the starting flow, the water flow switch outputs a "off" signal. The control system produces a control effect opposite to the above. In other words, when the water flow rate in the pipeline is greater than 1L/min, the magnetic core is displaced by the water flow and drives the magnetic source to produce a magnetic control effect, causing the sensor to output a "1" switch signal. This signal is input to the equipment control system, and after power amplification, it achieves the purpose of water flow control. When the water flow rate in the pipeline is less than 1L/min, the magnetic core drives the magnetic source back to its original position under the pushing force of the reset spring, causing the sensor to output a "0" switch signal and stop the system's operation. Fire flow switches have advantages such as high sensitivity and strong durability.

Advantages of fire flow switch

（1） Low flow rate (quantity) action of water flow switch

（2） The water flow switch has a simple structure and a small contact surface for action

（3） Water flow switch can also be used for low impurity water flow

（4） When special debris blocks the water flow switch, it can be cleared online