Three-way change valve

The utility model relates to the field of gas delivery of heat-accumulating type heating furnaces, in particular to a three-way change valve. The three-way change valve comprises a valve casing, a valve core and a rotating valve head and is characterized in that three outlets are arranged on the val...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHANG HONGWEI, YAN ZHENGTAI, JIN JIULI, ZHANG TIANFU, WANG LIANG, ZHANG YU, LIU CHANGPENG
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 the field of gas delivery of heat-accumulating type heating furnaces, in particular to a three-way change valve. The three-way change valve comprises a valve casing, a valve core and a rotating valve head and is characterized in that three outlets are arranged on the valve casing; the valve core made of ceramic material is arranged in the valve casing; one end of the valve core is coaxially connected with the rotating valve head through a connecting rod; a communicated pore channel is arranged on the valve core; and grease is coated between the valve casing and the valve core. The included angle of the communicated pore channel is 90 degrees and the wall thickness of the communicated pore channel is within 10 mm to 25 mm. Compared with the prior art, the utility model has the benefits as follows: the valve core made of ceramic material can bear high temperature with 200DEG C from flue gas and has small heat deformation; the rotating valve head can be electrically or pneumatically