Hollow hinge of box door

Abstract

The invention provides a hollow hinge of a box door. Two ends of the hollow hinge are respectively a box door connecting end for connecting the door box and a doorframe connecting end for connecting a doorframe; a hinge plate is arranged in the middle of the hollow hinge; the hinge plate is connected with the doorframe connecting end by a pin shaft; the hollow hinge is provided with a cavity which can run through an external part through a first opening and a second opening; the first opening is positioned at the doorframe connecting end; and the second opening is positioned on in the hinge plate or at the box door connecting end. By using the hollow hinge, fluid is introduced into and drawn forth of a fluid passage of the box door of a freeze dyer from a machine room behind the separating doorframe, the fluid passage is not separately arranged outside the hinge of the box door; and a fluid pipeline and the hinge of the box door are combined into one. By using the hollow hinge, not only can the difficulties of a conventional hose assembly and a rotating joint which are positioned between the box door of the freeze dryer and the separating doorframe on cleaning and sterilization working aspects be eliminated, but also the hidden danger that the fluid leaks to pollute a sterile room can be eliminated.

Description

technical field [0001] The invention relates to a hollow hinge of a box door, which is suitable for a freeze dryer used for drying medicines by adopting a vacuum freeze drying process and a sterilization cabinet used for sterilization by steam in the pharmaceutical industry. Background technique [0002] Since the principle of using steam to sterilize the freeze-dryer and the sterilizer is the same, and the structure of the door and the isolation door frame is similar, the following description only uses the freeze-dryer as an example. [0003] For the freeze-drying production of sterile preparations, in order to prevent the drugs from being contaminated by the production equipment, it is necessary to regularly sterilize the freeze dryer. Using superheated steam to heat the part or system of the lyophilizer that may contaminate the drug to 121°C and keep it for no less than 30 minutes is a reliable method suitable for sterilizing the lyophilizer. After the freeze dryer is s...

AI Technical Summary

Problems solved by technology

[0006] In order to meet the displacement requirements of the freeze-drying cabinet door, the pipeline that leads the fluid into and out of the box door from the machine room behind the isolation door frame adopts the method of connecting the hose assembly to the rotary joint and then connecting the box door to the isolation door frame. Because there are structural gaps in the connection between the hose assembly and the swivel joint, it is extremely difficult to clean and disinfect the structural gap, and because the hose assembly has damage leakage caused by bending fatigue, the swivel joint has a sealing surface Therefore, the above-mentioned method of introducing the fluid from the machine room behind the isolation door frame into and out of the box door and setting the pipeline separately not only has difficulties in cleaning and disinfection work, but also has problems due to fluid leakage. The hidden danger of contamination of the sterile room

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