Special nozzle for super-long bag dust collector

The utility model discloses a special nozzle for a super-long bag dust collector, which comprises an airflow contraction section, a blowing throat section and an airflow diffusion section which are sequentially arranged along the blowing direction, and an air supply hole is arranged on the side wall of the blowing throat section. According to the utility model, an extremely high gas flow rate is generated at the blowing throat section, most of the gas flow at the blowing throat section reaches the gas flow diffusion section to form a larger gas mass, the gas mass quickly enters the filter bag by virtue of high-speed thrust at the blowing throat section, a Venturi effect is generated at the opening of the filter bag, and the gas in the gas purification chamber of the dust remover can form a secondary gas flow entering the filter bag. A small part of the rest airflow of the blowing throat section enters the air purification chamber through the air supplementing hole, and the airflow can buffer the negative pres