The utility model provides a three-door
interlocking and
timer linkage device, which comprises a self-cleaning area three-room door, an
interlocking and
timer control circuit, the self-cleaning area three-room door comprises an unpacking room door, an
airlock room door and a clean corridor door, a
timer is arranged in a wall for separating an unpacking room and an
airlock room, the front and back surfaces of the timer are provided with display screens, the two surfaces are visible, and the
interlocking and timer
control circuit is connected with the interlocking and timer
control circuit. When materials enter the
airlock room door and the clean corridor door and are closed at the same time,
countdown is started after an instruction is received, the airlock room door or the clean corridor door can be opened after
countdown is finished, interlocking of the three
doors is achieved, personnel cannot open the
doors at will to enter a self-cleaning area of a workshop, the two
doors cannot be opened at the same time, cross
contamination of the materials is effectively avoided, and the service life of the airlock room door and the clean corridor door is prolonged. And the added timer is interlocked and linked with the three doors, so that materials can be self-cleaned for a certain time in an environment in which the airlock is completely closed, the requirement of GMP (
Good Manufacturing Practice) is met, the manual operation steps are reduced, and the production efficiency is improved.