Abstract: In order to solve the problems of slow natural drying rate of fire hose and time-consuming and laborious manual winding, a fire hose drying equipment based on open and close integrated air source heat pump was designed and developed. The equipment could not only realize the function of automatic winding, but also could stably and continuously provide hot air of 40~60 ℃, which greatly shorten the drying cycle of the fire hose. The main components of fire hose drying device were heat pump and drying chamber. First of all, the main components of heat pump were selected to achieve hot air output under different environmental conditions. Secondly, the structure of drying chamber was designed to make full use of heat energy. The left and right rotating shafts of the drying chamber were driven by the motor with clutch to realize the forward and reverse rotation of the fire hose, the hose was arranged in the "M" shape in the drying chamber, which extended the drying distance of the fire hose and further improved the drying efficiency.

Key words: open and close integrated air source heat pump, drying equipment, automatic winding, fire hose