Novel brazing flux sleeve

The invention discloses a novel brazing flux sleeve which comprises a flux sleeve body, the flux sleeve body comprises a front yoke, a flux shield and a tail yoke, the front yoke, the flux shield and the tail yoke are sequentially connected in a clamped mode and fixed through the brazing process, a welding flux ring is convenient to assemble by forming a positioning groove, and after the brazing process is completed, the flux shield is fixed to the front yoke through the positioning groove. The precision of the outer diameter of the flux sleeve can be effectively guaranteed by removing excess materials through turning, the surface roughness of the flux sleeve can be effectively guaranteed, and compared with the production cost of an existing product, the cost of the flux sleeve is lower; compared with an existing product, the length of the magnetism isolating sleeve of the magnetism conducting sleeve is greatly shortened, and the overall length is 0.5 mm larger than the maximum working air gap (stroke) 2.5 mm