Micro weighing spoon

By designing a micro-weighing spoon with replaceable spoon head and push rod assembly, the problems of spoon head contamination and drug spillage were solved, enabling accurate weighing and efficient experimental operation.

CN224293300UActive Publication Date: 2026-05-29尚小琴
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Patent Information

Application Number
CN202521342511.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-28
Publication Date
2026-05-29
Estimated Expiration
2035-06-28

AI Technical Summary

Technical Problem

Existing weighing spoons are prone to contamination when weighing small amounts of powdered chemical reagents, and disposable spoon heads are expensive, making it difficult to avoid spillage and cross-contamination.

Method used

A micro-weighing spoon has been designed, including a spoon shell, a spoon head assembly, and a push rod assembly. The spoon head assembly is a conical tube, and the spoon head can be replaced with disposable polypropylene material. The push rod assembly allows for quick replacement of the spoon head, and a snap-fit ​​connection is used to prevent medicine spillage and cross-contamination.

Benefits of technology

It enables precise weighing of trace amounts of powdered chemicals, reduces contamination of reagent bottles, avoids spillage and cross-contamination, and improves experimental efficiency and safety.

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Abstract

The utility model discloses a trace weighing spoon which comprises a spoon shell, a spoon head assembly and a push rod assembly, the spoon shell is provided with a spoon shell handle, and the trace weighing spoon further comprises a bottom shell and a connecting body. An annular fixing groove is formed in the surface of the connecting body; a circular digging hole is formed in the surface of the bottom shell; the spoon head assembly is provided with a conical tube body, and further comprises a material guide nozzle and a circular hollow insertion part; an annular fixing block is arranged on the inner surface of the circular hollow insertion part; the push rod assembly is composed of a clamping ring, a limiting block, a pressing support and a push rod nozzle. The outer side of the push rod assembly is sleeved with a spring strip. The spoon head assembly can be rapidly replaced, the spoon is particularly suitable for the scene of weighing various powdery chemical reagents for multiple times, repeated cleaning of the spoon head is reduced, the experiment efficiency is improved, and meanwhile, the design of the conical tube body at the front part of the spoon head assembly can effectively dig trace reagents and prevent spilling and leakage.
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