Sealing assembly between column head and column tube and chromatographic column

CN223344661UActive Publication Date: 2025-09-16TRUKING INGENUITY BIOTECHNOLOGY (CHANGSHA) CO LTD
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Patent Information

Application Number
CN202422870495.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2025-09-16
Estimated Expiration
2034-11-22

AI Technical Summary

Technical Problem

In the prior art, the sealing between the column head and the column tube is insufficient, which is prone to leakage, especially under high-pressure conditions. In addition, when the filler particles are large, they are difficult to clean, resulting in blind spots for cleaning and the risk of scratching the inner wall of the column tube.

Method used

A sealing assembly consisting of a scraper ring and an elastic support is adopted. The inner side of the scraper ring fits tightly against the side wall of the column head, and the outer side fits tightly against the side wall of the column tube, forming an annular sealing structure between the end of the column head and the column tube. Combined with the sealing ring, secondary sealing is achieved. An annular groove and serrated protrusions are provided on the scraper ring to enhance the sealing performance.

Benefits of technology

It achieves a good sealing effect under high-pressure conditions, prevents leakage, and can effectively clean the filler on the inner wall of the column tube, eliminates cleaning dead corners, and reduces the risk of scratching the inner wall of the column tube. It has a simple structure and good sealing.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223344661U_ABST
    Figure CN223344661U_ABST
Patent Text Reader

Abstract

The utility model discloses a sealing assembly between a column head and a column pipe, which comprises an elastic supporting piece and a scraper ring arranged on the peripheral side of the column head, the scraper ring is provided with an annular groove used for containing the elastic supporting piece, and one side of the scraper ring extends to form an annular sealing part. And the annular sealing part is clamped between the side wall of the end part of the column head and the side wall of the column pipe to form a sealing structure. The utility model further discloses a chromatographic column which comprises a column head, a column tube on the periphery of the column head and the sealing assembly. When the scraper ring is subjected to upward pressure, the inner side of the scraper ring is tightly attached to the outer side of the column head, and the outer side of the scraper ring is tightly attached to the inner wall of the column tube, so that a good sealing effect is achieved, leakage is prevented, and packing on the inner wall of the column tube can still be scraped clean when packing particles are large; the scraper ring is provided with an annular sealing part which extends downwards to the outer side of the lower part of the column head, and the outer side of the annular sealing part is contacted with the inner wall of the column tube, so that cleaning dead angles between the outer side of the lower part of the column head and the inner wall of the column tube can be eliminated.
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