What are the components of the actuator of a 3C fire damper?

The 3C fire damper mainly consists of a valve body and an actuator. The valve body is composed of a shell, flange, blades, and blade linkage mechanism. The actuator consists of a casing, blade adjustment mechanism, clutch, temperature fuse, etc

When the temperature of the gas transported in the pipeline reaches the melting temperature of the fusible metal sheet, the fusible sheet melts, and the compression spring and spring pin on its core shaft have a suitable speed to press down the clutch pad. At this time, the clutch and blade adjustment mechanism are disengaged, and two torsion springs are installed on the valve body, causing the blades to rotate due to torque. From this, it can be seen that the 3C fire damper adopts the principle of mechanical transmission and does not require electricity, gas, or other energy sources, which can protect it from fire in any situation. The 3C fire damper on-off system requires that the system be in an open state during shutdown and normal operation. If the temperature of the gas transported in the pipeline is lower than the melting point of the selected metal fusible plate, it is in a normal operating state and the valve is open. When the operating conditions exceed the normal usage state, the valve will automatically close to achieve safety function