Production method of glass thermometer without vacuum blowing processing

A production method and technology of thermometers, applied in thermometers, thermometers based on expansion/contraction of materials, measuring devices, etc., can solve problems such as pollution, and achieve the steps of avoiding mercury evaporation pollution, reducing rising vacuum and detecting stress, and solving mercury Effects of evaporative pollution problems
CN102426064AActive Publication Date: 2012-04-25东阿阿华医疗科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
东阿阿华医疗科技有限公司
Publication Date
2012-04-25

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Abstract

The invention relates to a production method of a glass thermometer without vacuum blowing processing. The method comprises the following steps: carrying out high temperature aging for 7 hours on thermometer pipe material whose contraction throat operation is completed, taking the pipe material out and carrying out natural cooling on the pipe material to 30-40 DEG C, placing the pipe material into a vacuum cabin for mercury injection, after mercury injection, dipping the pipe material into water with a constant temperature of about 42.25 DEG C, heating one end of the pipe material to enable amercury column to heat up and overflow, fusing an open end of the pipe material and carrying out capping processing, and selecting a thermometer with overflow length of 98-103 cm and pipe material length of 110-115 cm for carrying out subsequent processing. By employing the method provided in the invention, a production flow of the thermometer is optimized, production efficiency is raised, manpower cost is reduced, mercury evaporation pollution caused by a traditional production method is avoided, and health and security of operation personnel are ensured.
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Description

technical field

[0001] The invention relates to a production method of a glass thermometer, in particular to a production method of a glass thermometer without vacuum expansion. Background technique

[0002] At present, the vast majority of domestic medical thermometers use traditional glass mercury thermometers. Glass mercury thermometers have the advantages of accurate and reliable temperature measurement, simple operation, and low price. However, the production process of mercury thermometers has major environmental safety risks and hidden dangers to human health. The production process of the glass mercury thermometer includes cutting, neck pulling, throat constriction, mercury injection, head sealing, semicolon, printing, color drying, packaging and other processes, among which steps such as vacuum expansion and mercury distillation in the mercury injection process are directly Exposure to the production environment, the evaporation of mercury in the air threatens the ...

Claims

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