Pilot-operated type electro-hydraulic proportional valve

The utility model relates to a pilot-operated type electro-hydraulic proportional valve which mainly comprises a valve body, a valve core, an end cover, a displacement detection sleeve, a displacement detection rod, a displacement sensor, an amplifier, a first spring seat, a pressure spring, a secon...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG HAIQIN, QIU HAIWEI
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 relates to a pilot-operated type electro-hydraulic proportional valve which mainly comprises a valve body, a valve core, an end cover, a displacement detection sleeve, a displacement detection rod, a displacement sensor, an amplifier, a first spring seat, a pressure spring, a second spring seat, a connecting screw, a flat cover, a pressure-reducing valve and an electromagnetic proportional directional valve, wherein the displacement detection sleeve is connected with the end cover through threads, and the displacement detection rod is connected with the valve core through threads. According to the pilot-operated type electro-hydraulic proportional valve, a thread structure easy to machine and assemble is adopted, accuracy of electrical control is improved, and the primary assembling qualified rate and quality stability of products are improved. In addition, compared with an existing pilot-operated type electro-hydraulic proportional valve, the pilot-operated type electro-hydraulic proportion