Elliptic double-layer quartz crucible

The utility model relates to an elliptic double-layer quartz crucible, consisting of an outer crucible and an inner crucible which is arranged in the outer crucible, wherein the distance between the outer crucible and the inner crucible is 4-8mm; the vertical cross sections of the outer crucible and the inner crucible are each of an isosceles trapezoid structure; and top openings and bottoms of the outer crucible and the inner crucible are each of an elliptic structure with the ellipticity of 50%. Compared with the prior art, the elliptic double-layer quartz crucible provided by the utility model has the following beneficial effects: 1, grouting forming and trimming can be performed easily due to a relatively small size; 2, an elliptic quartz crucible green body is relatively small in size and small in firing size and can be formed into a finished product easily by virtue of one-time forming; 3, by virtue of two times of green body firing, two elliptic quartz crucibles with different sizes and specifications can be obtained, and the creative technology of the elliptic double-layer quartz crucible is formed; and 4, the top openings and the bottoms of the outer crucible and the inner crucible are each of an elliptic structure, and because the compressive capacity of ellipse is the strongest, the phenomena of quartz crucible deformation and failure in crystal pulling are effectively avoided, and bumps in a dissolved material are prevented.