Sampling box for measuring and simulating nitrogen oxide in laboratory

A technology of nitrogen oxides and sampling boxes, applied in teaching models, instruments, educational appliances, etc.

Inactive Publication Date: 2016-02-17
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regrettably, existing this modified square plastic bucket basically can't meet this requirement

Method used

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  • Sampling box for measuring and simulating nitrogen oxide in laboratory
  • Sampling box for measuring and simulating nitrogen oxide in laboratory
  • Sampling box for measuring and simulating nitrogen oxide in laboratory

Examples

Experimental program
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Embodiment Construction

[0013] A sampling box for measuring simulated nitrogen oxides in a laboratory (reference figure 1 , 2 , 3), the sampling box includes a box body 1 and a cover plate 2, on the side wall of the box body 1 is provided with a suction nozzle 4 for socketing latex tube 3. In the present invention, a beaker holder 6 for placing a beaker 5 filled with concentrated nitric acid is arranged in the middle of the inner bottom of the box body 1; The distances from the gas nozzle 4 to the bottom of the casing 1 are also equal.

[0014] With the disclosure so far, those skilled in the art will be able to manufacture a device that is substantially identical to the technical solution of the present application based on their understanding of the application and beneficial effects of the sampling box.

[0015] Further speaking, in order to ensure that the beaker 5 filled with concentrated nitric acid can be placed in the middle of the casing 1 accurately, the beaker seat 6 can be further impro...

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PUM

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Abstract

The invention provides a sampling box for measuring simulated nitrogen oxide in a laboratory. The sampling box comprises a box body and a cover plate. The side wall of the box body is provided with air exhaust nozzles for being connected with latex tubes in a sleeving mode. The middle of the bottom in the box body is provided with a beaker seat for containing a beaker filled with concentrated nitric acid. Eight air exhaust nozzles are distributed at equal intervals, and the distance between the eight air exhaust nozzles and the bottom of the box body is the same. When mixed gas containing the simulated nitrogen oxide is exhausted from the sampling box, it is guaranteed that gas samples with the mixing ratio basically the same can be obtained as long as several students in the same experiment group conduct operation at the same time, and accordingly, whether all the students really learn and correctly master the method for measuring the content of nitrogen oxide in air or not can be accurately judged.

Description

technical field [0001] The invention relates to a container used for measuring simulated nitrogen oxides in a laboratory. Background technique [0002] Nitrogen oxides (NO X ) has great harm to human health, the method of measuring the content of nitrogen oxides in the air has become a basic skill that relevant personnel must learn and master correctly. Therefore, an experimental class for learning this method is also set up in chemistry teaching . Since they generally do not go to the vicinity of thermal power plants that produce nitrogen oxides, etc., when students learn this measurement method in the laboratory, they simulate (man-made) nitrogen oxides in a container. mixed composition. The current specific method is: choose a square plastic bucket that is large enough (usually not less than 10 liters), open three to four holes on the wall of the bucket and install a suction nozzle, put a latex tube on the suction nozzle, and then Clamp the latex tubing to avoid air l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/24
CPCG09B23/24
Inventor 徐彦芹严华蒲兴群吕遵桃曹渊陈昌国鲜晓红
Owner CHONGQING UNIV
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