Finance Industry reported on February 17, 2025 that the information of the National Knowledge and Rights Bureau showed that Xilangmen Industry (Suzhou) Co., Ltd. has obtained a patent titled \”A sealed lifting door\”. Authorization Announcement No. CN 222478503 U, application date is March 2024.
The patent summary shows that this utility model discloses a sealed lifting door, involving the technical field of lifting doors. This utility model includes a bracket and a door panel, and a second shell is connected to one side of the bracket, and the second shell is An air pump is installed on the outer surface of the body. A single-direction valve is connected to the air outlet of the air pump, and a metal soft tube is connected to the top of the single-direction valve. This practical new model uses the configuration of counterweight blocks, metal soft tubes, gas pumps, gas bags, limit switches, electromagnetic valves, single-direction valves and guides. During the lifting of the door, the gas bags do not expand, thereby reducing the wear of the seal. When the lifting door is closed, the limit switch contacts the ground and sends out a telecommunication signal. At this time, the air pump is turned on. After the air pump is turned on, air is input into the interior of the air bag through the valve metal soft pipe and air inlet pipe in turn, causing the air bag to expand and the lifting door and wall. The sealing gap between the walls improves sealing performance; the sealing structure is better and the sealing structure is not easy to wear to prolong the life of use. At the same time, the pipeline is automatically tightened to reduce the damage caused by the pipeline swelling.
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