| 摘要 |
The invention relates to a double-walled graphite funnel (1) which has an upper opening (12) and a lower opening (14), wherein the openings (12, 14) have different clear widths and are arranged parallel to one another, and wherein the double-walled graphite funnel (1) is formed from an inner funnel (4) and an outer funnel (3), the inner funnel (4) and outer funnel (3) are composed of graphite, the inner funnel (4) is designed in terms of the dimensions and shape thereof such that said inner funnel can be received in the outer funnel (3), the inner funnel (4) is received in the outer funnel (3) such that an intermediate space (7) is formed between the inner funnel (4) and the outer funnel (3), the intermediate space (7) is, adjacent to the opening (14) with relatively small clear width, delimited by a contact surface formed between the inner funnel (4) and the outer funnel (3), and the intermediate space (7) is, adjacent to the opening (12) with the relatively large clear width, accessible from the outside, characterized in that the intermediate space (7) between the inner funnel (4) and the outer funnel (3) is filled with a pourable filling material (8). The invention also relates to a set for producing a double-walled graphite funnel according to the invention. |
