Double-layer fire-fighting water hose production technology

Abstract

The invention provides a double-layer fire-fighting water hose production technology. The double-layer fire-fighting water hose production technology comprises the following steps that firstly, a material is selected and added into a reacting furnace to be smelted, a colloidal mixture is formed and then introduced into an extruding machine, extruding and cooling are conducted, and a cylindrical lining layer and a cylindrical cladding layer are formed; secondly, warp-weft knitting is conducted by adopting a two-shuttle circular knitting machine, warp yarn hole position groups are arranged on circular-ring cloth of a circular knitting machine workbench, warp yarn is threaded on the warp yarn hole position groups every other two positions or every other multiples of two positions, two shuttles on the circular knitting machine pull weft yarn of the two shuttles to move along shuttle running rails simultaneously, and bipartite yarn discs of the two shuttles conduct twisting by adopting a two-upper two-lower mode; and thirdly, the made lining layer is sleeved with a knitting layer, the cladding layer is coated with a bonding agent, and the knitting layer is wrapped in the cladding layer.According to the double-layer fire-fighting water hose production technology, knitting is more tight, the pressure bearing effect is better after water is introduced, bursting can not occur, a double-layer fire-fighting water hose can adapt to various fire scenes with complex conditions, and damage is not prone to occurring.

Description

technical field [0001] The invention relates to fire-fighting equipment, in particular to a production process for a double-layer fire-fighting hose. Background technique [0002] A fire hose is a hose used to transport flame-retardant liquids such as high-pressure water or foam. The traditional fire hose uses rubber as the inner lining, and the outer surface is wrapped with a single layer of flax braid. The fire hose is not only easy to wear and damage, but also ages quickly, which is easy to cause the inner lining and the braid to separate and fall off. The fire hose seeps and leaks, and it is very inconvenient to repair and has a short service life. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a double-layer fire hose production process, which is more tightly woven, has a better pressure-bearing effect after passing through the water, does not burst, and can adapt to fire scenes with complex conditions. ...

AI Technical Summary

Problems solved by technology

The traditional fire hose uses rubber as the inner lining, and the outer surface is wrapped with a single layer of flax braiding layer. The fire hose is not only easy to wear and damage, but also aging quickly, which is easy to cause the inner lining and the braiding layer to separate and fall off, making The fire hose seeps and leaks, and it is very inconvenient to repair and has a short service life