Movable silicon tetrachloride product closed sampler

Abstract

The invention discloses a movable silicon tetrachloride product closed sampler which comprises a silicon tetrachloride container shell, a built-in sampling pipeline, a built-in pipeline cover, a pipeline cover square body, a sampling suction cylinder, a square body connecting cavity, a suction cylinder liquid inlet and outlet through hole, a suction cylinder piston ring and a piston ring pull rod.When sampling is needed, the sampling suction cylinder is inserted into the built-in sampling pipeline, the sampling suction cylinder is rotated to enable threaded connection between the built-in pipeline cover and the built-in sampling pipeline to rotate so as to take down the built-in pipeline cover, the sampling suction cylinder is continuously inserted until the liquid inlet and outlet through hole of the suction cylinder is positioned below the liquid level of the silicon tetrachloride liquid, and therefore the silicon tetrachloride liquid can be sucked. According to the silicon tetrachloride sampling device, sampling can be conducted under the condition that the silicon tetrachloride liquid does not make contact with air, in addition, under the condition that sampling is not used up, the silicon tetrachloride liquid can be sent back into the container under the condition that the silicon tetrachloride liquid does not make contact with air, and the situation that silicon tetrachloride makes contact with air in the sampling process and generates a chemical reaction is avoided.

Description

technical field [0001] The invention relates to chemical equipment, in particular to a mobile airtight sampler for silicon tetrachloride products. Background technique [0002] High-purity silicon tetrachloride is a colorless transparent liquid, and the one with a slightly lower purity is slightly yellow or light yellow and has a suffocating smell. The density at normal temperature and pressure is 1.48, the melting point is -70°C, and the boiling point is 57.6°C. The boiling point increases with the increase of pressure. It is hydrolyzed in humid air to form silicic acid and hydrogen chloride. When it meets water, the hydrolysis is very intense, and it can also react violently with alcohols. Soluble in carbon tetrachloride, titanium tetrachloride, tin tetrachloride. Corrosive to skin. It is used to make silicates, silicone monomers, silicone oil, high-temperature insulating paint, silicone resin, silicone rubber, etc., and is also used as a smoke screen agent. Most of t...

AI Technical Summary

Problems solved by technology

In the process of sampling silicon tetrachloride products, the container must be opened to sample, which will easily cause silicon tetrachloride to come into contact with the air and cause a chemical reaction. If a syringe is inserted into the rubber pad, the container can only be Disposable, the container can no longer be used after the rubber pad of the container is punctured, and the unused silicon tetrachloride liquid cannot be returned to the container again, therefore, a closed sampler that does not come into contact with the air is required

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