Valve clack structure of low-flow-loss butterfly valve

The utility model discloses a valve clack structure of a low-flow-loss butterfly valve. According to the low-flow-loss butterfly valve clack structure, the portions, provided with an upper shaft holeand a lower shaft hole, of the upper end and the lower end of a butterfly valve clack are of a steppe...

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Hauptverfasser:	JIN XINDE, REN YANQING, YANG QINGLIN, QU HUAIZHEN
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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creator	JIN XINDE REN YANQING YANG QINGLIN QU HUAIZHEN
description	The utility model discloses a valve clack structure of a low-flow-loss butterfly valve. According to the low-flow-loss butterfly valve clack structure, the portions, provided with an upper shaft holeand a lower shaft hole, of the upper end and the lower end of a butterfly valve clack are of a stepped structure, and the portion, provided with the upper shaft hole, of the upper end of the butterflyvalve clack of the stepped structure is sequentially connected from top to bottom and integrally formed into a cylinder A, a circular truncated cone, a cylinder B and a ball table; the lower end of the butterfly valve clack of the stepped structure is provided with a lower shaft hole and comprises a cylinder A, a circular truncated cone body, a cylinder B and a ball table body which are sequentially connected from bottom to top and integrally formed. After the butterfly valve clack is fully opened, on the premise that the sealing performance is guaranteed, the ratio of the flow area to the drift diameter area of the b
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According to the low-flow-loss butterfly valve clack structure, the portions, provided with an upper shaft holeand a lower shaft hole, of the upper end and the lower end of a butterfly valve clack are of a stepped structure, and the portion, provided with the upper shaft hole, of the upper end of the butterflyvalve clack of the stepped structure is sequentially connected from top to bottom and integrally formed into a cylinder A, a circular truncated cone, a cylinder B and a ball table; the lower end of the butterfly valve clack of the stepped structure is provided with a lower shaft hole and comprises a cylinder A, a circular truncated cone body, a cylinder B and a ball table body which are sequentially connected from bottom to top and integrally formed. 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According to the low-flow-loss butterfly valve clack structure, the portions, provided with an upper shaft holeand a lower shaft hole, of the upper end and the lower end of a butterfly valve clack are of a stepped structure, and the portion, provided with the upper shaft hole, of the upper end of the butterflyvalve clack of the stepped structure is sequentially connected from top to bottom and integrally formed into a cylinder A, a circular truncated cone, a cylinder B and a ball table; the lower end of the butterfly valve clack of the stepped structure is provided with a lower shaft hole and comprises a cylinder A, a circular truncated cone body, a cylinder B and a ball table body which are sequentially connected from bottom to top and integrally formed. After the butterfly valve clack is fully opened, on the premise that the sealing performance is guaranteed, the ratio of the flow area to the drift diameter area of the b</abstract><oa>free_for_read</oa></addata></record>
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subjects	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
title	Valve clack structure of low-flow-loss butterfly valve
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