A device for adding liquid and taking liquid conveniently for U-shaped porous glass plate absorption tube

Abstract

The invention relates to a device for adding liquid and taking liquid conveniently for a U-shaped porous glass plate absorption tube. The workbench is provided with a liquid adding adjusting and fixing device, a liquid adding device, a liquid taking adjusting and fixing device and a liquid taking device; The adjustment and fixing device includes a bracket arranged on the workbench, on which a rotating shaft is arranged through a bearing, the outer end of the bracket is connected with the crank handle, and the inner side of the bracket is provided with a moving gear, which is connected with a transmission gear through meshing, and the transmission gear It is fixed on the bracket by a rod; it can conveniently control the amount of liquid added and the completeness of the liquid taken, which can not only ensure the accuracy of the liquid added, but also ensure the completeness of the liquid taken, which avoids the difficulty of controlling the amount of liquid added Repeated operations are required, and the problem of low accuracy of measurement results caused by incomplete liquid extraction is avoided. While saving manpower and material resources, the accuracy and accuracy of measurement results are greatly improved, and the difficulty of work is reduced. work efficiency.

Description

Technical field: [0001] The invention relates to a device for adding liquid and taking liquid conveniently for a U-shaped porous glass plate absorption tube. Background technique: [0002] At present, U-shaped porous glass plate absorber is widely used in gas sampling because of its high absorption efficiency. When collecting different gas samples, the corresponding absorption liquid needs to be added to the U-shaped porous glass plate absorption tube, and gas sampling has precise requirements on the volume of the absorption liquid. The special design of the U-shaped porous glass plate absorption tube meets the requirements of gas sampling, but its shape is not conducive to operations such as adding liquid and taking liquid. If the single person uses the liquid feeding pipe to directly add liquid to the straight pipe of the U-shaped porous glass plate absorption tube, the absorption liquid will overflow from the joint between the liquid feeding pipe and the U-shaped porous ...

AI Technical Summary

Problems solved by technology

The special design of the U-shaped porous glass plate absorption tube meets the requirements of gas sampling, but its shape is not conducive to operations such as adding liquid and taking liquid.

If the single person uses the liquid feeding pipe to directly add liquid to the straight pipe of the U-shaped porous glass plate absorption tube, the absorption liquid will overflow from the joint between the liquid feeding pipe and the U-shaped porous glass plate absorption tube, and the absorption liquid will be wasted. Plate absorption tubes also need to be rewashed or dried

The self-filling device can be operated by one person, but it is troublesome to clean and dry the burette and other auxiliary pipes used, and because it is made of glass with a special shape, it is not easy to carry on site and is easy to break

At present, the laboratory generally uses the two-person operation method, one person adds liquid with the liquid addition pipe, and the other person uses a suction ear ball to suck air at the other side of the absorption pipe at the same time. be careful

[0003] In addition, it is very troublesome to take the liquid from the absorption tube after sampling. In order to ensure the accuracy and reliability of the experimental results, it is necessary to ensure that all the absorption liquid is taken out without contaminating the sample.

At present, it is commonly used in the laboratory to slowly blow the sampled absorption liquid into the colorimetric tube with the suction ear ball, which is time-consuming and laborious, and it is easy to cause the absorption liquid to splash. Analysis of the results, resulting in low accuracy of the entire test results

[0004] In summary, the existing U-shaped porous glass plate absorption tube is inconvenient to operate by a single person, and when liquid is added, liquid will overflow from the joint between the liquid feeding tube and the U-shaped porous glass plate absorption tube, wasting the absorption liquid. The absorption tube of the glass plate also needs to be rewashed or dried; the two-person operation needs to cooperate skillfully, and if there is a slight carelessness, it needs to be redone; Incompleteness causes the occurrence of low accuracy of test results, which greatly increases the difficulty of work and reduces work efficiency

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