一种烟气输送闸阀密封装置

Abstract

本实用新型公开了一种烟气输送闸阀密封装置，涉及阀门技术领域，包括密封框和压紧机构，密封框包括矩形框架和软密封结构，矩形框架能够通过压紧机构安装于闸阀内，并位于闸板的上方，且矩形框架的侧边与闸板的侧边一一对应设置，软密封结构包裹于矩形框架上；压紧机构能够压紧密封框与闸板，以密封闸板与壁板之间的间隙。本实用新型能够提高闸阀密封性，保证电解铝净化系统中烟道气体输送的稳定性，减少运行引风机的效率损失，同时，提高备用引风机检修的安全性。

Claims

1. A sealing device for a flue gas conveying gate valve, characterized in that: The device includes a sealing frame and a pressing mechanism. The sealing frame comprises a rectangular frame and a soft sealing structure. The rectangular frame can be installed inside the gate valve by the pressing mechanism and is located above the gate plate. The sides of the rectangular frame correspond one-to-one with the sides of the gate plate. The soft sealing structure is wrapped around the rectangular frame. The pressing mechanism can press the sealing frame and the gate plate together to seal the gap between the gate plate and the wall panel.

2. The flue gas transfer gate valve seal apparatus of claim 1, wherein: The clamping mechanism includes a first lifting assembly, a second lifting assembly, a transmission assembly, and a switch-type actuator; The first lifting assembly includes a first rotating shaft and a first linkage part. The first rotating shaft is rotatably connected to the inner wall of the first side of the wall panel and is located above the first side of the rectangular frame. The first rotating shaft is connected to the first side of the rectangular frame through the first linkage part. The first linkage part includes a first linkage crank and a second linkage crank. The first end of the first linkage crank is fixedly connected to the first rotating shaft, the second end of the first linkage crank is rotatably connected to the first end of the second linkage crank, and the second end of the second linkage crank is rotatably connected to the first side of the rectangular frame. The second lifting assembly includes a second rotating shaft and a second linkage part. The second rotating shaft is arranged parallel to the first rotating shaft and is rotatably connected to the inner wall of the second side of the wall panel, and is located above the second side of the rectangular frame. The second rotating shaft is connected to the second side of the rectangular frame through the second linkage part. The second linkage part includes a third linkage crank and a fourth linkage crank. The first end of the third linkage crank is fixedly connected to the second rotating shaft, the second end of the third linkage crank is rotatably connected to the first end of the fourth linkage crank, and the second end of the fourth linkage crank is rotatably connected to the second side of the rectangular frame. The transmission assembly is disposed between the first rotating shaft and the second rotating shaft. The switch-type actuator can drive the first rotating shaft and the second rotating shaft to rotate synchronously through the transmission assembly, so that the rectangular frame moves up or down, thereby loosening or tightening the gate plate by the soft sealing structure.

3. The flue gas transfer gate valve seal apparatus of claim 2, wherein: The transmission assembly includes a first transmission crank, a first transmission plate, a drive crank, a second transmission plate, and a second transmission crank. The first end of the first transmission crank is fixedly connected to the first end of the first rotating shaft. The second end of the first transmission crank is rotatably connected to the first end of the first transmission plate. The second end of the first transmission plate is rotatably connected to the first end of the drive crank. The second end of the drive crank is rotatably connected to the first end of the second transmission plate. The second end of the second transmission plate is fixedly connected to the first end of the second rotating shaft.

4. The flue gas transfer gate valve seal apparatus of claim 3, wherein: The switch-type actuator is a motor. The output end of the motor is connected to the drive crank, and the motor can drive the drive crank to rotate, thereby driving the first shaft and the second shaft to rotate synchronously.

5. The flue gas transfer gate valve seal apparatus of claim 1, wherein: The rectangular frame is a metal frame.

6. The flue gas transfer gate valve seal apparatus of claim 1, wherein: The soft sealing structure is made of silicone or rubber.

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