灭火器使用方法
Use method of fire extinguisher
干粉灭火器
Dry powder fire extinguisher
适用范围：碳酸氢钠干粉灭火器适用于易燃、可燃液体、气体及带电设备的初起火灾；磷酸铵盐干粉灭火器除可用于上述几类火灾外，还可扑救固体类物质的初起火灾。但都不能扑救金属燃烧火灾。
Application scope: sodium bicarbonate dry powder fire extinguisher is suitable for fire of flammable, flammable liquid, gas and electrified equipment, and ammonium phosphate dry powder extinguisher can be used to save the initial fire of solid material in addition to several kinds of fire. But none of the metal fires can be saved.
干粉灭火器扑救可燃、易燃液体火灾时，应对准火焰要部扫射，如果被扑救的液体火灾呈流淌燃烧时，应对准火焰根部由近而远，并左右扫射，直至把火焰全部扑灭。如果可燃液体在容器内燃烧，使用者应对准火焰根部左右晃动扫射，使喷射出的干粉流覆盖整个容器开口表面；当火焰被赶出容器时，使用者仍应继续喷射，直至将火焰全部扑灭。在扑救容器内可燃液体火灾时，应注意不能将喷嘴直接对准液面喷射，防止喷流的冲击力使可燃液体溅出而扩大火势，造成灭火困难。如果当可燃液体在金属容器中燃烧时间过长，容器的壁温已高于扑救可燃液体的自燃点，此时极易造成灭火后再复燃的现象，若与泡沫类灭火器联用，则灭火效果更佳。
When the dry powder fire extinguisher saves the flammable and flammable liquid fire, the fire should be fired by the quasi flame. If the fire is flammable, it should be near and far away from the root of the flame until all the flames are extinguished. If the flammable liquid is burned in the container, the user should sloshing around the root of the parquasi flame, making the ejected dry powder flow over the open surface of the container; when the flame is driven out of the container, the user should continue to spray until the flame is completely extinguished. In the case of flammable liquid fire in the container, it should be noted that the nozzle should not be directed directly to the liquid jet to prevent the impact force of the jet to spatter the flammable liquid and expand the fire, resulting in the difficulty of extinguishing the fire. If the burning time of the flammable liquid is too long in the metal container, the wall temperature of the container is higher than the self ignition point of the flammable liquid, and it is very easy to rekindle after the fire extinguishing, and the fire extinguishing effect is better if the fire extinguisher is used in conjunction with the foam extinguisher.
使用方法：灭火时，可手提或肩扛灭火器快速奔赴火场，在距燃烧处5米左右，放下灭火器。如在室外，应选择在上风方向喷射。使用的干粉灭火器若是外挂式储压式的，操作者应一手紧握喷枪、另一手提起储气瓶上的开启提环。如果储气瓶的开启是手轮式的，则向逆时针方向旋开，并旋到最高位置，随即提起灭火器。当干粉喷出后，迅速对准火焰的根部扫射。使用的干粉灭火器若是内置式储气瓶的或者是储压式的，操作者应先将开启把上的保险销拔下，然后握住喷射软管前端喷嘴部，另一只手将开启压把压下，打开灭火器进行灭火。有喷射软管的灭火器或储压式灭火器在使用时，一手应始终压下压把，不能放开，否则会中断喷射。
Usage: when the fire is extinguishing, the fire extinguisher can be rushed to the fire place by hand or shoulder fire extinguisher, and put down the fire extinguisher at about 5 meters away from the burning place. If in the outdoor, you should choose to spray in the direction of the upper wind. If the dry powder extinguisher is used for external storage, the operator should hold the spray gun in one hand and lift the opening ring on the gas cylinder on the other hand. If the opening of the gas cylinder is handwheel type, turn it to the counterclockwise direction and turn it to the highest position, then bring up the fire extinguisher. When dry powder is ejected, quickly fire at the root of the flame. If the dry powder fire extinguisher is a built-in gas holder or pressure storage, the operator should first pull out the safety pin on the opening, then hold the nozzle front of the spray hose, and the other hand will open the press and open the fire extinguisher to extinguish the fire. When a fire extinguisher or a pressure accumulating fire extinguisher with a spray hose is used, one hand should always press down the handle and not release it, otherwise it will interrupt the injection.