Throttle butterfly valve and method of producing

A closure element (1) for a gas supply channel, comprises a channel section (2) that contains a throttling flap (3). The flap is moved by a shaft (4), and the channel and flap form a common unit, made of plastic. The flap and the shaft are injection molded, and the flap shaft is held in a bearing (2...

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Bibliographische Detailangaben
Hauptverfasser:	MANGOLD, CHRISTOF, ZIRNIG, GUENTHER, DJIKAM TCHALE, SYLVAIN MICHEL, KLOTZ, ARTHUR, BUEHL, HEINZ, GESSNER, KLAUS, BARTEL, WALTHER, WAGNER, WERNER, TRAICHEL, DIRK, STEINER, GUENTHER
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING COCKS COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A closure element (1) for a gas supply channel, comprises a channel section (2) that contains a throttling flap (3). The flap is moved by a shaft (4), and the channel and flap form a common unit, made of plastic. The flap and the shaft are injection molded, and the flap shaft is held in a bearing (20) and has a lever (6). The element is produced by injection molding the channel section, forming a hollow section for the flap, and then forming the flap and shaft in a second injection step. Bearing members are located in the mold unit before moulding takes place. Ein Verschlußelement für einen gasführenden Kanal umfaßt einen Kanalabschnitt (2), in dem eine Drosselklappe (3) mittels einer Drosselwelle (4) bzw. einer Klappenachse schwenkbar gelagert ist. Der Kanalabschnitt (2) bildet mit der Drosselklappe (3) eine gemeinsame, gegenüber den übrigen Anlageteilen separate Baueinheit (11). Die Drosselklappe (3), Drosselwelle (4) bzw. Klappenachse und der Kanalabschnitt (2) bestehen aus Kunststoff.