A vacuumizing nitrogen-filling and plugging device

By using a vacuum-assisted nitrogen-filling and stoppering device, which utilizes a sealed cylinder and lifting shaft structure, air is removed from the bottle and nitrogen is introduced, thus solving the problem of high residual oxygen content in the top cavity of the bottle. This achieves high-quality preservation of the liquid medicine and improves the product safety and shelf life of the filling machine.

CN224337182UActive Publication Date: 2026-06-09CHANGSHA ZHONGYI PHARMA MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHANGSHA ZHONGYI PHARMA MACHINERY
Filing Date
2025-06-12
Publication Date
2026-06-09

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Abstract

This utility model discloses a vacuum-sealing and nitrogen-filling stoppering device, which includes a sealing cylinder mounted on a frame. The lower end of the sealing cylinder is equipped with a sealing pressure sleeve. A first connector and a second connector are connected to the sealing cylinder. A hollow lifting shaft is located inside the sealing cylinder. The lower end of the lifting shaft is equipped with a suction nozzle connected to it. A roller is rotatably mounted on the upper end of the lifting shaft. The roller rolls along a first cam on the frame. The lifting shaft is slidably connected to the frame. The lifting shaft includes a first section and a second section, which are connected by a stoppering spring. The sealing cylinder is connected to a clamping sleeve on the frame via the first spring. The clamping sleeve rotates around the first cam. Compared with the prior art, this utility model completes the stoppering process by evacuating air and filling the cylinder with nitrogen. This creates a sealed space with almost no air and only nitrogen, resulting in a very low residual oxygen level in the top cavity of the bottled medicine after compression.
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