Trapezoidal 2LTC6109-8T hop jig diaphragm vertically installed on jigging sieve chamber below the side wall and distinguished according to the direction of movement of the diaphragm, and ore flow perpendicular to the direction of motion that lateral pneumatic diaphragm jig. Because the diaphragm is arranged on the outer wall of the tank, also known as the lateral dynamic external diaphragm jump jig, Ann jumped jigging chamber horizontal surface shape is also called ladder type jig.