Automatic locking mechanism for sealing door of pressure vessel in sterilizer

Abstract

The invention relates to an automatic locking mechanism for a sealing door of a pressure vessel in a sterilizer. The automatic locking mechanism comprises a sterilizer body and the sealing door, wherein the pressure vessel of which an opening faces the sealing door is arranged in the sterilizer body; a sealing cover matched with an opening end of the pressure vessel is arranged on the sealing door; a locking screw, a screw spring, a screw driving device, a trigger rod, a trigger rod returning spring, a first trigger switch, a second trigger switch and a control panel are also arranged on the sterilizer body; in the process that the trigger rod moves inwards, the first trigger switch is triggered, and further the control panel is triggered to control the screw driving device to start operating; in the process that the locking screw moves outwards, the second trigger switch is triggered, and further the control panel is triggered to control the screw driving device to stop operating; and a supporting block for supporting against the trigger rod and a locking nut for being in locked matching with the locking screw are also arranged on the sealing door. The automatic locking mechanism for the sealing door is simple and convenient in operation; when the door is locked, the locking mechanism can be triggered by only closing the sealing door to lock the sealing door, and the sealing door is reliably locked.

Description

technical field [0001] The invention relates to the technical field of sterilizers, in particular to an automatic locking mechanism for a sealed door of a pressure vessel in a sterilizer. Background technique [0002] The existing sealed door lock mechanism used for the pressure vessel in the sterilizer is divided into two types: mechanical door lock mechanism and electric control type door lock mechanism. Among them, most of the mechanical door lock mechanisms have the defects of complicated structure and inconvenient operation, and also have the disadvantage that the sealed door can be easily opened when the pressure vessel in the sterilizer is in a state of vacuum and high pressure. The high-pressure steam and high-temperature water in the pressure vessel will spray out, causing the operator to be easily scalded, so it is very dangerous. Although the electric control door lock mechanism overcomes some shortcomings of the mechanical door lock mechanism, it has the defect ...

AI Technical Summary

Problems solved by technology

Among them, most of the mechanical door lock mechanisms have the defects of complicated structure and inconvenient operation, and also have the disadvantage that the sealed door can be easily opened when the pressure vessel in the sterilizer is in a state of vacuum and high pressure. The high-pressure steam and high-temperature water in the pressure vessel will spray out, causing the operator to be easily burned, so it is very dangerous

Although the electric control door lock mechanism overcomes some shortcomings of the mechanical door lock mechanism, it has the defect that the airtight door on the pressure vessel cannot be opened in case of power failure or other emergencies, and the existing electric control The structure of the type door lock mechanism is complex and the cost is high

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