Two-pole-adjustable gas inlet vortex generating device

The invention discloses a two-pole-adjustable gas inlet vortex generating device. The two-pole-adjustable gas inlet vortex generating device comprises a gas inlet branch tube, a vortex blade, a rotaryshaft, a rotary cylinder, a synchronous toothed belt, a supporting wheel, a pulling rope, a torsion spring, a sealing strip, a drive gear and a key slot. According to the two-pole-adjustable gas inlet vortex generating device disclosed by the invention, the vortex blade is additionally arranged in a gas inlet system, and the blade can be regulated to be erected and dropped according to a low-rotation-speed working condition and a high-rotation-speed working condition of a diesel engine, so that requirements, on gas inlet vortex strength, under different working conditions of the diesel engineare met. Compared with the prior art, the two-pole-adjustable gas inlet vortex generating device overcomes the problem that the size of the vortex cannot be changed according to the working conditionof the engine while vortex