Dry powder fire extinguisher capable of guaranteeing fine powder discharge based on negative pressure

Abstract

The invention relates to the technical field of fire-fighting facilities, and discloses a dry powder fire extinguisher capable of guaranteeing fine powder discharge based on negative pressure. The drypowder fire extinguisher comprises a fire extinguisher body, wherein an arc plate is fixedly installed at the lower end inside the fire extinguisher body, and a grinding block is connected to the upper surface of the arc plate in a lap joint mode, a balancing weight is fixedly installed inside the grinding block; a wind screen is fixedly installed at the upper end of the grinding block, fixing blocks are fixedly installed on two sides inside the fire extinguisher body, electromagnets are fixedly installed at grooves of the fixing blocks, grinding plates are movably installed in the grooves ofthe fixing blocks, and connecting blocks are fixedly installed on the upper surface of the grinding plates. The double grinding is guaranteed, the spray holes which can block the fire extinguisher can be prevented from being sprayed out of the granular, meanwhile, the situations that if the dry powder is granular, the dry power can not be effectively attached to the combustion object, so that oxygen can not be isolated from the combustion object, so that the fire extinguishing is not ideal are avoided.

Description

technical field [0001] The invention relates to the technical field of fire-fighting facilities, in particular to a dry powder fire extinguisher that guarantees powder fineness based on negative pressure. Background technique [0002] The dry powder fire extinguisher uses negative pressure as the power to spray the dry powder in the cylinder to extinguish the fire. The dry powder is a dry, easy-to-flow fine solid powder, which is composed of a fire-extinguishing base material, a moisture-proof agent, a flow accelerator, and an anti-caking agent. Composed of additives such as chemical agent, it is mainly used to extinguish the initial fires of flammable liquids such as petroleum and organic solvents, flammable gases, and electrical equipment. [0003] At present, the dry powder in the portable dry powder fire extinguisher is not in a fully sealed state during the process of filling the dry powder into the fire extinguishing tank. The dry powder may absorb moisture in the air,...

AI Technical Summary

Problems solved by technology

[0003] At present, the dry powder in the portable dry powder fire extinguisher is not in a fully sealed state during the process of filling the dry powder into the fire extinguishing tank. The dry powder may absorb moisture in the air, and may form agglomerates when filled into the fire extinguishing tank. When a fire extinguisher is needed later, the nozzle hole of the fire extinguisher may be blocked, and if the dry powder is granulated, it may not be able to effectively adhere to the burning material, causing the burning material to be unable to completely isolate oxygen, resulting in poor fire extinguishing effect ideal

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