Cleaning bracket for quartz glass sample chamber of mercury injection instrument

The utility model discloses a cleaning bracket for a quartz glass sample chamber of a mercury injection instrument. The device comprises a base, a waste liquid collecting tank, a supporting plate seatand a double-disc bracket, a waste liquid collecting tank is connected between the first supporting rod and the second supporting rod at the top of the base, the supporting plate base comprises a supporting plate and an annular fixing block, an annular cavity is formed in the middle of the annular fixing block, a horn opening is formed in the middle of the supporting plate, and the supporting plate is in lifting sliding positioning connection with the exterior of the first supporting rod through a lifting shaft A, a sliding sleeve A and a lifting knob A; the double-disc bracket is in liftingsliding positioning connection with the exterior of the second supporting rod through a lifting shaft B, a sliding sleeve B and a lifting rotary knob B. The central axis of the arc-shaped bracket coincides with the central axi