Electric control shutdown valve electrical control device with state indication and automatic power-off functions

The utility model provides an electric control shutdown valve electrical control device with state indication and automatic power-off functions, which comprises a first microswitch 1, a second microswitch 2, a third microswitch 3, a motor, a transmission lead screw and a gear, the upper end of the t...

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Bibliographische Detailangaben
Hauptverfasser:	NIU ZUJUN, ZHAO PAN, NAN KANGKANG, SUN JING, ZHANG YIFAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BASIC ELECTRIC ELEMENTS BLASTING COCKS DEVICES FOR VENTING OR AERATING ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING RELAYS SELECTORS TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The utility model provides an electric control shutdown valve electrical control device with state indication and automatic power-off functions, which comprises a first microswitch 1, a second microswitch 2, a third microswitch 3, a motor, a transmission lead screw and a gear, the upper end of the transmission lead screw is of a threaded structure, and the lower end of the transmission lead screw is sequentially provided with a first boss structure and a second boss structure; a second microswitch 2 and a third microswitch 3 are arranged on the first boss structure, a first microswitch 1 is arranged on the second boss structure, and the upper end of the transmission lead screw is in threaded connection with the gear; the first microswitch 1 of the terminal c is connected in series with the motor and then is connected in series with the second microswitch 2; a C port of the first microswitch 1 is connected with a negative electrode of a motor, a C port of the second microswitch 2 is connected with a positive e