ZSFM diaphragm deluge alarm valve

材质：

球墨铸铁

口径：

DN50-300mm

>Diaphragm deluge valve consists of main valve, hydraulic alarm, pressure switch, manual ball valve, solenoid valve, three-way ball valve, needle valve and control pipeline. With open sprinklers, water curtain sprinklers, closed sprinklers and fire alarm control systems, a corresponding sprinkler fire extinguishing system can be formed. It has the characteristics of simple structure, easy operation, safety and reliability, and convenient installation and maintenance. In the event of a fire, the deluge valve opens, and the system's open sprinklers automatically spray water to extinguish the fire source. They can also automatically spray water to the entire protected area at the same time, thereby preventing the spread and expansion of the fire. It is suitable for buildings and sites with high fire risk that are prone to freezing or require intensive protection.
>Structure and use:
>The main valve of the diaphragm type deluge alarm valve uses a diaphragm to divide the main valve into upper and lower chambers, and the upper chamber is the control chamber. The difference in area between the upper and lower chambers is used to generate water pressure to achieve main valve sealing. When there is no fire, the handle of the three-ball valve is downward, the needle valve, maintenance ball valve, and end ball valve are in the open state, the solenoid valve, manual ball valve, and discharge ball valve are in the open and closed state. The inlet pressure of the pressure gauge is . At this time, the main valve is closed. In the event of a fire, there are three control methods to control the main valve to open to extinguish the fire. After the main valve is opened, the pressure enters the pressure switch and hydraulic alarm bell. The hydraulic alarm bell sounds an alarm and the pressure switch control center sends a signal or turns on the fire pump. The diaphragm deluge valve has an anti-reset structure. The anti-reset device automatically starts after the main valve is opened to prevent the main valve from returning due to misoperation. After extinguishing the fire, cut off the transmission pipe network, close the solenoid valve, manual ball valve and end ball valve to close the main valve.
Reasonable structure and beautiful appearance: The control pipeline of the deluge valve is made of high-quality copper pipes, and the control components are reasonably configured to make controlling the valve simple and clear.
Convenient and reliable control, operation: three control methods ensure that the main valve is opened, and any one of the three control methods can open the main valve.
Built-in anti-reset device: The built-in anti-reset device simplifies the control piping. The start-up of the anti-reset device is automatically controlled by the main valve, and the reset operation is simple.
>The composition and working principle of the deluge fire extinguishing system:
>The deluge fire extinguishing system consists of an electronically controlled deluge valve, an open or closed sprinkler head (purchased separately), a water flow indicator (purchased separately), and a hydraulic Alarm bell, pressure switch (purchased separately), electric control cabinet (purchased separately), etc. form an electrically controlled deluge system. When working in the response state, the deluge valve seals the fire water on the water supply side of the pipe network, and there is no water in the system side pipe network.
When the detector in the protected area transmits the measured fire signal to the control center, the control center processes the signal and sends a start signal to the solenoid valve on the deluge valve. The solenoid valve opens and the diaphragm chamber releases pressure. , the deluge valve is activated, water enters the system pipe network from the water supply side, and is sprayed to the protected area through the sprinkler head to extinguish the fire.
The water pressure in the diaphragm cavity of the deluge valve controls the opening and closing of the deluge valve. When the water pressure in the diaphragm cavity drops to a certain value by opening the solenoid valve or the staff opening the emergency manual quick-opening valve, The diaphragm is pushed open by the water supply pressure, and the water flows into the system side pipe network to extinguish the fire.
The deluge valve can also be equipped with a wet or dry control pipe network to form a wet or dry control system. When the nozzle of the control pipe network bursts, the water pressure in the diaphragm cavity drops, and the valve opens.
This valve is equipped with an anti-reset device. Once the water pressure in the pressure chamber is relieved, no matter whether the solenoid valve or manual quick-opening valve is closed again, the pressure chamber cannot be re-pressurized and the valve remains open. It can ensure that the deluge valve will not be closed again due to power outage during the fire extinguishing process.