Dry powder fire extinguishing device based on fluid pressure intensity principle

The invention relates to the technical field of pressurization, and discloses a dry powder fire extinguishing device based on a fluid pressure intensity principle. The dry powder fire extinguishing device comprises a shell, wherein a button is fixedly connected to the outer part of the shell, a bottle body is fixedly connected to the inner part of the shell, a stirring fan is fixedly connected tothe inner part of the bottle body, a pressure plate is movably connected to the inner part of the bottle body, a sealing cover is fixedly connected to the inner part of the bottle body, and an elasticfilm is fixedly connected to the outer part of the sealing cover. According to the dry powder fire extinguishing device, under the interaction of the pressure plate, the sealing cover, the elastic film, a contact, a sliding rod, a first spring, a collision block, a first gear, a second gear, a first moving block, a third gear, a second moving block, a sliding plate, a detection assembly, a sliding rail and a sliding block, the internal pressure of a fire extinguisher can be kept constant all the time under the action of the pressure plate in the process of using the fire extinguisher by a user, so that the fire extinguishing range of the fire extinguisher can be kept in a good spraying range all the time, and the fire extinguishing time is shortened.