Projection centrifugal automatic rotation spraying device

Abstract

The invention discloses a projection centrifugal automatic rotation spraying device, which comprises a liquid inlet vertical pipe body, an upper end cover, a lower end cover and a conical flow rate control tongue, wherein the flow rate control tongue is arranged at the middle part of the upper surface of the lower end cover, the liquid inlet vertical pipe body is a stepped connecting pipe, an oil-free end surface bearing and an oil-free shaft surface bearing are sequentially sheathed on the liquid inlet vertical pipe body, the upper end cover is sheathed on the outer sides of the oil-free shaft surface bearing and the oil-free end surface bearing, a gap is retained between the upper end cover and the oil-free end surface bearing, a rabbet shaft surface sealing part is arranged in the gap,the sealing part passes through a sealing pressure block and a locking nut and is further fixed in the gap, and a spiral opening with a parabolic cross section is arranged on the periphery of the flow rate control tongue of the lower end cover. The spraying device not only utilizes impact of a water source in a flow passage for generating a rotating force and further enabling water to form rotaryspraying, but also has the larger water body projection coverage surface; simultaneously, the spraying device can further protect waterproof and maintenance-free functions of a rotating mechanism andachieve the long-term reliable operation of water-spraying fire-extinguishing function.

Description

technical field [0001] The invention relates to a rotary sprinkler mechanism, in particular to a projectile centrifugal automatic rotary sprinkler. Background technique [0002] The fire extinguishing nozzles currently in use on the market include old-fashioned temperature-sensitive closed nozzles, open centrifugal rotary nozzles, rotary screen type large-flow fire extinguishing nozzles, etc. The temperature-sensitive closed nozzle uses a heat-resistant 68°C glass bubble to absorb the temperature of the fire-combustion airflow, and when the liquid in the bubble expands to a critical point, it begins to explode and open the valve plug to spray water to extinguish the fire. Its disadvantage is that the bubble explosion time is obvious. Lag behind the fire; the Achilles heel of the open centrifugal nozzle is that the torque of the two side thrust nozzles of the centrifugal nozzle is very small, and in addition, the corrosion of the rotating parts by water stains will lose the f...

AI Technical Summary

Problems solved by technology

However, due to the unreasonable setting of the rotating mechanism of the device, there will be immersion of the swirl spray water during installation and use, which will cause the swirl spray to fail, thereby affecting the final fire extinguishing effect

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