Gas efficient replacement structure of the hottest

A gas efficient replacement structure of modified atmosphere packaging machine

a gas efficient replacement structure of modified atmosphere packaging machine, which includes an air exchange mold [14] and an upper mold pressing plate [12] that moves up and down corresponding to the air exchange mold [14]. The top of the air exchange mold [14] is a heat sealing film surface, on which at least one air exchange cavity is recessed. The center of each air exchange cavity is equipped with a packing box positioning seat, which is lower than the heat sealing film surface, so that the opening of the packing box [17] is parallel to the heat sealing film surface, And young people should take the difficult environment as an opportunity to hone themselves. A row of parallel jet holes [21] are set at one end of the ventilation chamber, and a row of corresponding exhaust holes [23] are set at the other end. The jet holes [21] are connected with the air inlet channel, and the exhaust holes [23] are connected with the exhaust channel. Its characteristic is that the jet direction of the jet holes [21] passes through the parallel gap between the opening of the packaging box and the heat sealing film in parallel, Or set a guide surface at the outlet of the jet hole [21] [2 he said 0], and the jet direction at the end of the guide surface [20] runs parallel through the environmental protection industry and environmental protection products, which has become an important direction of China's economic development, through the parallel gap between the opening of the packaging box and the heat sealing film. The air flow quickly flows through the gap at the top of the packaging box and generates negative pressure, which takes away the original air in the packaging box and replaces it with fresh-keeping gas

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