A device for identifying fire glory root and its adulterants

By introducing a variable-speed motor and a permanent magnet sealing ball into the liquid nitrogen ball mill, the liquid nitrogen replenishment is automatically adjusted, solving the problem of temperature rise during high-speed grinding in the liquid nitrogen ball mill. This ensures the integrity of the medicinal material DNA and the accuracy of the identification results, simplifies the operation process, and improves grinding efficiency.

CN119368287BActive Publication Date: 2026-05-08CHONGQING YAOYANYUAN PHARM CO LTD
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Patent Information

Application Number
CN202411478940.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-22
Publication Date
2026-05-08
Estimated Expiration
2044-10-22

AI Technical Summary

Technical Problem

Existing liquid nitrogen ball mills cannot adjust the amount of liquid nitrogen replenishment according to the rotation speed during high-speed grinding, which leads to increased temperature, affecting the integrity of the medicinal material's DNA and the accuracy of subsequent identification results.

Method used

A device comprising a liquid nitrogen ball mill, a DNA extraction kit, and a PCR amplification instrument was designed. The ball mill jar is driven to rotate by a variable speed motor. The liquid nitrogen replenishment is automatically adjusted by the cooperation of a permanent magnet and a sealing ball to ensure uniform temperature distribution. The liquid nitrogen inflow is adjusted when the rotation speed changes to avoid temperature fluctuations.

Benefits of technology

It achieves stable temperature inside the ball mill jar without shutting down the machine, ensuring the integrity of the medicinal material DNA and the accuracy of the identification results, simplifying the operation steps and improving grinding efficiency.

✦ Generated by Eureka AI based on patent content.
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Abstract

The application belongs to the technical field of medicinal plants and traditional Chinese medicine identification, and discloses a device for identifying firecracker flower roots and their adulterants, which comprises a liquid nitrogen ball mill, a DNA extraction kit and a PCR amplifier connected in sequence, the liquid nitrogen ball mill is connected with a variable speed motor, and further comprises a sealing assembly, the sealing assembly comprises a first permanent magnet and a sealing ball, the first permanent magnet and the sealing ball repel each other, the first permanent magnet is slidingly arranged in a first through groove, the sealing ball is slidingly arranged in a wedge-shaped through groove, and is connected with a tension spring, the free end of the tension spring is fixedly connected with the wedge-shaped through groove; the first through groove and the wedge-shaped through groove are both provided with a sliding groove, and the first permanent magnet and the sealing ball are slidingly connected with the sliding grooves respectively; the diameter of the sealing ball is not less than the diameter of the opening of the wedge-shaped through groove; the scheme can adjust the supplement amount of liquid nitrogen according to the change of the rotating speed of the ball mill. The application solves the problem that the existing liquid nitrogen ball mill cannot adjust the supplement amount of liquid nitrogen according to the rotating speed of the ball mill.
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