A double-layer explosion-proof fire extinguisher

Abstract

The invention discloses a double-layer explosion-proof fire extinguisher, which includes a bottle body and a valve seat arranged on the upper end of the bottle body and fixedly connected with the bottle body. The bottle body includes an outer cylinder and an inner cylinder arranged inside the outer cylinder. The bottom of the inner cylinder is provided with a lower pedestal, and an upper pedestal is provided above the inner cylinder; the outer cylinder includes an outer cylinder body, and is arranged above the outer cylinder body and fixed with the outer cylinder body for A sealed upper head, and a lower head which is arranged under the outer cylinder body and fixed with the outer cylinder body for sealing; this kind of double-layer explosion-proof fire extinguisher has a double-layer bottle body made of an outer cylinder and an inner cylinder, and has The advantages of simple structure, safety and reliability, and scientific manufacturing process of the bottle body, low cost, safety and reliability can further improve the use safety of the fire extinguisher and improve product quality.

Description

Technical field[0001]The present invention relates to a double-layer explosion-proof fire extinguisher.Background technique[0002]The fire extinguisher is a portable fire extinguishing tool. Place chemicals in the fire extinguisher to save the fire. The fire extinguisher is one of the common fire facilities. Where to store in public places or may have a fire, the components of different types of fire barrels are different, which is designed for different fire alarms. Be careful to avoid anti-effect and danger.[0003]In addition, the cracks in the surface weld area in the entire fire extinguisher bottle are more severe, and most of them appear on the ring weld, there is no plastic deformation of the crack fracture, exhibiting a typical brittle crack. Most of the cracks are shallow and long surface cracks, and there is a significant branch, the main cracks are vertical in the direction of the weld, especially in the arc of manual arc welding, and the T-joint and the head seam and simpli...

AI Technical Summary

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.

Images