Ventilation air valve with air volume multi-stage control function

The utility model discloses a ventilation air valve with multi-stage air volume control, which comprises a ventilation air valve body, a first rotary valve cover structure is arranged in the ventilation air valve body, a second rotary valve cover structure is arranged in the first rotary valve cover...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHEN CANZHI, CHEN FENGYING, WU MEICHAN, LI YUNYANG, SU XIANJUN, CHEN ZECHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a ventilation air valve with multi-stage air volume control, which comprises a ventilation air valve body, a first rotary valve cover structure is arranged in the ventilation air valve body, a second rotary valve cover structure is arranged in the first rotary valve cover structure, a third rotary valve cover structure is arranged in the second rotary valve cover structure, and a ventilation air valve is arranged in the ventilation air valve body. Adjusting rotating mechanisms are arranged on the first rotating valve cover structure, the second rotating valve cover structure and the third rotating valve cover structure, angle positioning structures are arranged in the adjusting rotating mechanisms, a plurality of overturning valve covers with different sizes are arranged in the valve from outside to inside, the corresponding valve covers can be rotated according to the requirement for adjusting the air volume, and the air volume can be adjusted. And the rotating angle of each valve