Double-layer anti-explosion fire extinguisher

Abstract

The invention discloses a double-layer anti-explosion fire extinguisher. The double-layer anti-explosion fire extinguisher comprises a bottle body and a valve base arranged at the upper end of the bottle body and fixedly communicated with the bottle body; the bottle body comprises an outer cylinder and an inner cylinder arranged in the outer cylinder; a lower cushion base is arranged at the bottomof the inner cylinder, and an upper cushion base is arranged above the inner cylinder; the outer cylinder comprises an outer cylinder body, an upper end socket and a lower end socket, the upper end socket is arranged on the upper portion of the outer cylinder body, fixed to the outer cylinder body and used for sealing, and the lower end socket is arranged on the lower portion of the outer cylinder body, fixed to the outer cylinder body and used for sealing. According to the double-layer explosion-proof fire extinguisher, the double-layer bottle body is prepared through the outer cylinder andthe inner cylinder, and the fire extinguisher has the advantages of being simple in structure, safe and reliable; besides, the manufacturing process of the bottle body is scientific, the cost is low,the bottle body is safe and reliable, the use safety of the fire extinguisher can be further improved, and the product quality can be improved.

Description

technical field [0001] The invention relates to a double-layer explosion-proof fire extinguisher. Background technique [0002] A fire extinguisher is a portable fire extinguishing tool. Chemicals are placed in the fire extinguisher to put out the fire. Fire extinguishers are one of the common fire prevention facilities. They are stored in public places or places where fires may occur. Different types of fire extinguishers contain different ingredients and are specially designed for different fire alarms. Care must be taken during use to avoid adverse effects and danger. [0003] In addition, the cracks in the weld area of ​​the internal surface of the general fire extinguisher bottle are relatively serious, and most of them appear on the girth weld, and the crack fracture has no plastic deformation, showing the characteristics of typical brittle cracks. Most of the cracks are shallow and long surface cracks with obvious branches. The main cracks are perpendicular to the ...

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Problems solved by technology

[0003] In addition, the cracks in the weld area of ​​the inner surface of the general fire extinguisher bottle are relatively serious, and most of them appear on the girth weld, and the crack fracture has no plastic deformation, showing the characteristics of typical brittle cracks

Most of the cracks are shallow and long surface cracks with obvious branches. The main cracks are perpendicular to the direction of the weld, especially at the arc start and end of manual arc welding, the T-joint and the ring seam of the head. The cracks are more serious at the intersection of weld seams, which shows that during the production process of the fire extinguisher bottle, due to the defects in the molding process, it is easy to have cracks at the weld during use, which shortens the service life of the cylinder

[0004] To sum up, the existing fire extinguishers are not safe and reliable enough, and the molding process of the bottle is unscientific, which leads to high cost and insufficient safety and reliability. It is impossible to further improve the safety of fire extinguishers and improve product quality.

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