CDD built-in camera for single crystal furnace

The invention relates to the technical field of single crystal furnaces, in particular to a CDD built-in camera for a single crystal furnace, the CDD built-in camera comprises a shell, a first sealing gasket, a second sealing gasket and a CCD camera, the first sealing gasket is fixedly arranged above the shell, and the second sealing gasket is fixedly arranged in the shell on the outer side of the first sealing gasket; second rotating rings are not mounted in the second sealing gaskets and on the outer sides of the first sealing gaskets, first rotating rings are rotationally connected between the second rotating rings and the adjacent second rotating rings, third sealing gaskets are arranged on the surfaces of the second rotating rings, and rotating handles are fixedly arranged on the surfaces of the first rotating rings; and a first rotating wheel is fixedly arranged in the first rotating ring. The CDD built-in camera for the single crystal furnace has the beneficial effects that when the CDD built-in camera