AIR EXTRACTION STRUCTURE AND KEEP-FRESH CONTAINER HAVING SAME

An air extraction structure, comprising: an elastic press cover (100); a seat (200), which forms an air extraction chamber (110) with the elastic press cover, and which is provided with a mounting hole (210), a plurality of air extraction holes (220) being arranged in the circumferential direction o...

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Bibliographische Detailangaben
1. Verfasser:	WEI, Honghua
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING
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Beschreibung
Zusammenfassung:	An air extraction structure, comprising: an elastic press cover (100); a seat (200), which forms an air extraction chamber (110) with the elastic press cover, and which is provided with a mounting hole (210), a plurality of air extraction holes (220) being arranged in the circumferential direction of the mounting hole; a valve seat (500), which is provided with a receiving hole (510) that communicates with the mounting hole and the air extraction hole; a blocking member (300), which comprises a flexible diaphragm (310) and a clamping part (320), wherein the clamping part is clamped and placed on a lower surface of the seat, a lower surface of the flexible diaphragm can be attached to an upper surface of the valve seat and sealing the air extraction hole, the blocking member can control the communication or disconnection between the air extraction chamber and the air extraction hole, a first reinforcing rib (311) extends circumferentially on the lower surface of the flexible diaphragm, and the first reinforcin