Portable telescopic brush sweeper

The utility model discloses a portable telescopic brush sweeper which comprises a base, a sleeve is fixedly connected to the upper surface of the base, a limiting stepped shaft coaxial with the sleeve is rotatably connected to the interior of the base, the upper end of the limiting stepped shaft extends to the position above the base and is fixedly connected with a screw, and the upper end of the limiting stepped shaft is fixedly connected with the screw. The side face of the screw is in threaded connection with a lifting nut, the side face of the lifting nut is fixedly connected with a lifting sliding rod, the side face of the sleeve is provided with a limiting sliding groove penetrating through the inside and the outside, and the limiting sliding groove is movably connected with the lifting sliding rod. According to the brush for the laboratory, the lifting storage mechanism is arranged on the brush, the brush body of the brush can be conveniently stored and carried, the dust falling situation of the brush