Glass burr reflowing pipe

Abstract

The invention relates to a glass burr reflowing pipe, belonging to the field of reflowing and condensation equipment. The glass burr reflowing pipe is composed of an inner pipe and an outer pipe, wherein through holes are formed in the upper and lower parts of the inner pipe; the upper part of the inner pipe is spherical and three opposite cold bubbles are formed on the lower part of the inner pipe when the lower part stretches on one plane from a wall of the reflowing pipe; the cold bubbles are communicated to form a burr shape; the outer pipe is in sleeving joint with the spherical upper part of the inner pipe; and an inclined water injection hole is formed in the upper part of the outer pipe. Based on the structure, water can be saved through air cooling when a sample is decomposed, and volatile matters and steam can be prevented from passing, so that the glass burr reflowing pipe has relatively good reflowing effect.

Description

technical field [0001] The invention relates to the field of reflux condensation equipment, in particular to a glass burr reflux pipe used in a COD digester. Background technique [0002] The reflux condenser is a glass tube device often used in the process of organic chemical experiments to realize the reflux function. It is installed on the reflux device to cooperate with the distillation flask and the curved adapter to condense steam and condense droplets. The reflux condenser is divided into spherical type, serpentine type and straight type according to the application, and is suitable for scientific research, colleges and universities, petrochemical industry, pharmaceutical industry, medical and health and other units. [0003] At the same time, the reflux condenser is also an important part of the COD digester. Generally, the COD digester uses a glass spherical reflux tube, which is cooled by circulating water. When the sample is digested, the sample in the digestion b...

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Problems solved by technology

[0003] At the same time, the reflux condenser is also an important part of the COD digester. Generally, the COD digester uses a glass spherical reflux tube, which is cooled by circulating water. When the sample is digested, the sample in the digestion bottle is heated, and there will be a small amount of volatile substances and steam. Overflow through the spherical reflux tube, which is not conducive to reflux cooling, and wastes water, which affects the digestion measurement results

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