Freeze dryer gland device
The utility model discloses a freeze dryer gland device which comprises a lead screw, a sleeve is sleeved outside the lead screw, the sleeve is fixed on a shell, a power structure for driving the lead screw to rotate is arranged inside the shell, the top end of the lead screw is rotatably connected...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a freeze dryer gland device which comprises a lead screw, a sleeve is sleeved outside the lead screw, the sleeve is fixed on a shell, a power structure for driving the lead screw to rotate is arranged inside the shell, the top end of the lead screw is rotatably connected with the shell, a polish rod is arranged at the bottom end of the lead screw, a groove for the lead screw to be inserted is arranged inside the polish rod, and the lead screw is fixed in the groove. The top end of the groove is provided with an internal thread matched with the lead screw, the polished rod is located between the sleeve and the lead screw, the polished rod is in sliding connection with the sleeve, the polished rod is in sliding connection with the freeze-drying bin in a sealed mode, the bottom end of the polished rod is provided with a pressing plate, and the freeze-drying bin is internally provided with a guiding structure which has a guiding effect on movement of the pressing plate. By adopting the |
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