Abstract: Disclosed is a yarn-forming filament cooling apparatus mainly including a stand-up air compartment defining a cooling air channel and a quick-cooling air-converge compartment located above the cooling air channel. Inner tubes are provided in the air-converge compartment corresponding to filament guiding ports provided on a top of the cooling air channel. Each inner tube is provided on a circumferential surface with a plurality of throttle pores, such that when filaments are directed to pass filament guiding ports and inner tubes at high speed, air flowing through the cooling air channel is radially drawn into inner tubes to cool the filaments in all directions while the filaments keep moving forward at full speed. Meanwhile, cooling air is supplied into an upper portion of the air-converge compartment in horizontally opposite directions without producing lateral resistance to the moving filaments. Whereby, high yield rate of yarns with stable quality can be achieved.

Abstract: An ultrahigh speed suction gun which allows high pressure air introduced into it via a first rear end thereof to flow into a cyclone producer and an accelerator in the suction gun to produce accelerated cyclonic air flows while making a barrel of the suction gun vacuumized, so that a filament can be sucked into the suction gun via the barrel and be discharged from the suction gun via a second rear end thereof.

Abstract: A multiuser high-rise building fire escape device includes a basic bearing frame assembly alternatively mountd on the roof or either floor of a high-rise building, and several cabins mounted on the tracks of the basic bearing frame assembly and suspended therefrom through a steel rope combination. The cabins each comprises a speed reducing gear to smoothen the down stroke speed of the cabin, a motor assembly to drive the steel rope to wind up so as to lift the cabin, a mid-way stop mechanism to stop the cabin during down stroke, and a ladder door to control the access of the cabin and to serve as a bridge for striding over the cabin and an intermediate floor of a building.