4results about How to "Sampling safety" patented technology

The utility model relates to a kind of crystallizer gas sample sampling device, belong to metallurgical industry continuous casting production process auxiliary equipment technical field.The technical scheme is: containing metal handle (1), limiting silk (2), clamping spring (3) and gas sampler (4), the lower end of metal handle (1) and clamping spring (3) are fixedly connected together, gas sampler (4) is inserted into clamping spring (3), metal handle (1) is equipped with the limiting silk (2) matched with gas sampler (4);The limiting silk (2) is fixed on metal handle (1);The gas sampler (4) is vacuum glass tube, lower part is conical, and upper part is cylindrical;The limiting silk (2) is arranged perpendicularly with metal handle (1), and metal handle (1) is arranged parallelly with the center line of gas sampler (4).The utility model has the beneficial effects that: gas sampler can be accurately and quickly inserted into crystallizer steel liquid, sample quality is good, and detection accuracy is high.

The application discloses a method for determining the content of aluminum in thionyl chloride solution of aluminum trichloride by complexometric titration, and relates to the field of complexometric titration in analytical chemistry. After a sample is hydrolyzed under a closed condition, aluminum ions are combined with an excessive amount of disodium ethylenediaminetetraacetate solution under the condition that the pH value is about 3.0. Then, the excessive amount of disodium ethylenediaminetetraacetate is titrated by using dimethylphenyl orange as an indicator and a zinc chloride standard titration solution under the condition that the pH value is about 6.0. The method has the advantages of convenient sampling safety, simple determination steps, easy mastering, short analysis time and accurate detection result.

The utility model discloses a safe sampler for anti-corrosion liquid, which comprises a hollow hand lever, a sealing cover and a container. One side of the lower end of the hand lever is connected with a container through a connecting block; a round hole is formed in one side of the upper end of the hand lever; a strip-shaped through hole A is formed in one side of the lower end of the hand lever close to the container; a through hole B is formed in the upper end of the hand lever; a pressing cap is inserted into the through hole B; a buckle structure is arranged at the lower end of the pressing cap; a movable rod is arranged at the lower end of the buckle structure; the upper end of the movable rod is sleeved with a spring. The lower end of the movable rod is connected with a rotating structure; the rotating structure penetrates through the through hole A and is connected with a sealing cover; and the sealing cover is matched with the container for use. According to the anti-corrosion liquid safety sampler, the sampling safety is improved, the operation convenience and the durability of equipment are ensured, and the anti-corrosion liquid safety sampler has higher practical value and market application prospect.