Radial intensity adjusting device for nucleus radiation density meter

The utility model discloses a ray intensity regulator of a nuclear radiation densimeter, which comprises the radioactive source (1) and the receiving sounding rod (2) of the nuclear radiation densimeter, a measuring tube (3) is arranged between the radioactive source (1) and the receiving sounding rod (2), and steel plates (4) are arranged between the radioactive source (1) and the measuring tube (3). By controlling the number of the steel plates inserted between the radioactive source and the measuring tube, the utility model adjusts the electromagnetic intensity of Gamma rays received by the receiving sounding rod of the nuclear radiation densimeter, so that the electromagnetic intensity of Gamma rays is more suitable for the requirements of the receiving sounding rod and the intensity detection is more accurate. The utility model can effectively control the ray intensity received by the receiving sounding rod of the nuclear radiation densimeter in the required range, only one radioactive source is applied,