Sampling device

Abstract

The invention provides a sampling device. When a sampling device main body does not work, a first end cover and a second end cover can be connected to the two ends of a pipe body, respectively press against a first sealing ring and a second sealing ring through a first sealing step surface and a second sealing step surface which are conical, and are gradually pressed by gradual screw-in of the first end cover and the second end cover, so that hermitical covering from the first end cover and the second end cover to the pipe body is realized, and effective sealing of a sulphydryl cotton absorption body is achieved. When the sampling device main body works, the first end cover and the second end cover are detached to open the two ends of the pipe body, and an air feeding pipe of an air pump is screwed at the air discharging end of the pipe body, presses against the second sealing ring through a third conical sealing step surface, and is gradually pressed by gradual screw-in of the air feeding pipe, thus realizing hermitical connection between the air feeding pipe and the pipe body, and switching on the air pump to enable air to pass through the pipe body and the sulphydryl cotton absorption body; the sulphydryl cotton absorption body can absorb and sample lead-containing micro particles in air flow.

Description

[0001] The patent application of the present invention is a divisional application of the Chinese patent application number 2015102871035. The application number of the original application is 2015102871035, and the application date is May 29, 2015. The name of the invention is a simple method for detecting the lead content in the working environment and sampling device. technical field [0002] The invention relates to the field of detection methods and devices for lead content in the air, in particular to a sampling device. Background technique [0003] Among the many culprits that endanger human health and children's intelligence today, lead is not a small one. According to an authoritative investigation report, the average lead content in the modern human body has greatly exceeded 500 times that of the ancients 1,000 years ago! However, human beings lack active and effective protective measures. According to the survey, the average lead content of many children is gener...

AI Technical Summary

Problems solved by technology

[0005] Sampling devices include pump sampling devices and pumpless sampling devices. The pumpless sampling device is widely used due to its advantages of strong portability, flexible operation, and small size. Its structure roughly includes an inner tube and an outer tube sleeved outside the inner tube. , the inner tube is equipped with activated carbon, and the inner tube is equipped with through holes for the contact between the activated carbon and the air. The outer tube is used as the switch of the inner tube. In actual use, due to the active contact between the outer tube and the inner tube, there is often a loose seal between the outer tube and the inner tube, and the resulting activated carbon has weakened or even failed before use, or after absorbing the sample due to If the seal is not tight, the activated carbon will come into contact with the air again, and then the sampling will be polluted, the indicators will be unstable, which will seriously affect the detection parameters, causing many troubles to people, and the practicability needs to be improved

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