Automatic detect anti blocking type screening machine

The utility model discloses an automatic detect anti blocking type screening machine, including feed mechanism (3), feed mechanism (3) are including pan feeding pipe (3 -1), return bend (3 -2) and inlet pipe (3 -3), inlet pipe (3 -3) is connected with pan feeding pipe (3 -1) through return bend (3 -2), inlet pipe (3 -3) is located screening case (2) outside, it is inside that pan feeding pipe (3 -1) shen ru arrives screening case (2), be provided with conveying roller (3 -4) in return bend (3 -2) and pan feeding pipe (3 -1), input at conveying roller (3 -4) is provided with connecting rod (3 -5), the input of connecting rod (3 -5) is worn from return bend (3 -2). The utility model discloses automatic detect anti blocking type screening machine prevents that the material from causing in feed inlet department and blocks up, has to have reduced equipment trouble and rate, has improved work efficiency.