| 摘要 |
PURPOSE: The pressure controlling device of the cold storage warehouse. The air of the cold storage warehouse inside is discharged to outside or the cold storage warehouse external air is injected to the inside of the cold storage warehouse. CONSTITUTION: The pressure controlling device of the cold storage warehouse comprises the packing(10), the hinge lever(20), the supporting shaft, the hinge body(50), stopper, the lever board(60), the joint pin. The air is inserted through the packing with the cold storage warehouse inside and external air pressure differential or it is exhausted. |
