Shellfish culture device capable of adjusting sizes of meshes

The invention discloses a shellfish culture device capable of adjusting the sizes of meshes. A suspension cage main body comprises a cylindrical suspension cage, wherein a support rod is arranged in the axial direction of the cylindrical suspension cage in a penetrating manner; a plurality of radial fixing rods are arranged on the top surface and the bottom surface of the cylindrical suspension cage; the outer sides of the radial fixing rods are fixed with a circular ring; dense nets are arranged on the top surface, the bottom surface and the side surface of the cylindrical suspension cage; the dense nets and the circular ring are made of an elastic plastic material. The sizes of meshes of the dense nets are adjusted through adjusting the lengths of the support rod and the radial fixing rod, thereby adapting to different growth stages of shellfish. 种可调节网眼大小的贝类养殖设备，吊笼主体包括圆筒形吊笼，圆筒形吊笼的轴向方向上贯穿设置有支撑杆，在圆筒形吊笼的顶面和底面均设置有多个径向固定杆，径向固定杆的外侧与圆环固定，圆筒形吊笼顶面、底面以及侧面设置有密网，所述密网、圆环均由弹性塑料材料制成，通过调节支撑杆、各径向固定杆的长度从而调节密网的网眼大小，从而适应贝类的不同生