Negative pressure pneumtic hair clipper

A negative pressure pneumatic hair clipper, comprising a housing and a hair cutting bit mounted on a head of the housing;

• a negative pressure turbine airway and a suction airway isolated from each other go all the way through the housing;
• a negative pressure turbine wind motor connected with the hair cutting bit is provided inside the negative pressure turbine airway and, when rotated, can drive the hair cutting bit to perform the hair cutting operation;
• a suction mouth of the suction airway is disposed near the hair cutting bit;
• a tail of the housing is connected with one end of an airway hose that is in gas phase communication with the negative pressure turbine airway and the suction airway, with the other end of the airway hose connected with a vacuum cleaner capable of generating negative pressure airflow to drive the negative pressure turbine wind motor to rotate;
• wherein the negative pressure turbine wind motor comprises an air guide rack fixed to the housing, a rotary turbine movably disposed behind the air guide rack, and a transmission component rotatably inserted in the air guide rack, the transmission component having one end connected to the hair cutting bit and the other end coaxially fixed to the rotary turbine;
• the rotary turbine is fixedly provided on its circumference with a plurality of blades, which are uniformly spaced in a circumferential direction and arranged at an angle to the central axis of the rotary turbine;
• a plurality of air guide passages uniformly spaced in the circumferential direction are disposed all the way through the air guide rack and also arranged at an angle to the central axis of the rotary turbine, with an air exit direction of the air guide passages perpendicular to the blades, and
• wherein the transmission component comprises a first shaft and a second shaft disposed coaxially, a planetary reducer connected by transmission between the first and second shafts, and an eccentric wheel fixed at one end of the second shaft and connected to the hair cutting bit, wherein the first shaft is rotatably inserted in the air guide rack, with one end of the first shaft coaxially fixed to the rotary turbine.