CN209784320U - Indoor air formaldehyde detection device - Google Patents
Indoor air formaldehyde detection device Download PDFInfo
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- CN209784320U CN209784320U CN201920483784.6U CN201920483784U CN209784320U CN 209784320 U CN209784320 U CN 209784320U CN 201920483784 U CN201920483784 U CN 201920483784U CN 209784320 U CN209784320 U CN 209784320U
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Abstract
Indoor air formaldehyde detection device, the compensating gas air inlet of compensating gas container through the tube coupling cylinder is equipped with compensating gas air inlet control valve on the compensating gas air inlet, and the sample air inlet of cylinder is connected through metal acquisition pipe to the self sealss air bag, is equipped with sample air inlet control valve on the sample air inlet, and the constant current of cylinder is sent a kind mouth and is connected large-scale bubble absorption tube, and the constant current is sent a kind mouthful and is equipped with constant current and send a kind mouth control valve on the mouth, the piston connection control system in the cylinder. The utility model discloses an indoor air formaldehyde detection device collects the indoor air sample with little volume self-sealing air bag by oneself, send appearance equipment to handle the sample through gas compensation and constant current and make it reach the 10L back that the testing standard required, make its absorption liquid in through the large-scale bubble absorption tube with 0.5L/min's flow again, accomplish the sampling process of sample. The on-site sampling link of the tester is eliminated, and the workload of the tester is greatly reduced, so that the test cost is greatly reduced.
Description
Technical Field
The utility model relates to a check out test set field especially relates to gaseous detection technology field.
Background
With the continuous improvement of the living standard of people, the decoration of the interior of a house becomes an important part for improving the living conditions and the living quality of people. Meanwhile, the serious influence of formaldehyde pollution generated by building materials and decoration materials on human health is widely known, and the demand of formaldehyde detection is increasing day by day.
The prior art provides a sampling method of a constant-flow sampler for formaldehyde detection, which is implemented by pumping a field 10L air sample at a flow rate of 0.5L/min by an air pump in the sampler and enabling the air sample to pass through absorption liquid in a large-sized bubble absorption tube.
In the process of researching the prior art, due to the limitations of various conditions that the sampler is complex to operate, the sampling volume requirement is large, the sample is required to be analyzed within 24 hours, and the like, a laboratory generally needs to send out a tester to the field for sampling, and then the tester is brought back to the laboratory for analysis to give a detection result. The method has the disadvantages of much time consumption and high cost of testers, and is not favorable for popularization.
Disclosure of Invention
In order to solve the above-mentioned problem that traditional formaldehyde detection device exists, the utility model provides an indoor air formaldehyde detection device.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: indoor air formaldehyde detection device, the compensating gas air inlet of compensating gas container through the tube coupling cylinder is equipped with compensating gas air inlet control valve on the compensating gas air inlet, and the sample air inlet of cylinder is connected through metal acquisition pipe to the self sealss air bag, is equipped with sample air inlet control valve on the sample air inlet, and the constant current of cylinder is sent a kind mouth and is connected large-scale bubble absorption tube, and the constant current is sent a kind mouthful and is equipped with constant current and send a kind mouth control valve on the mouth, the piston connection control system in the cylinder.
The cylinder is a 10L cylinder.
The utility model discloses an indoor air formaldehyde detection device collects the indoor air sample with little volume self-sealing air bag by oneself, send appearance equipment to handle the sample through gas compensation and constant current and make it reach the 10L back that the testing standard required, make its absorption liquid in through the large-scale bubble absorption tube with 0.5L/min's flow again, accomplish the sampling process of sample. The field sampling link of the tester is eliminated, and the workload of the tester is greatly reduced, so that the test cost is greatly reduced, and convenient conditions are provided for popularizing the formaldehyde detection service on a large scale.
Drawings
Fig. 1 is a front view structural diagram of the indoor air formaldehyde detecting device of the utility model.
In the figure: 1. the device comprises a compensating gas container, 2, a compensating gas inlet control valve, 3, a self-sealing air bag, 4, a metal collecting pipe, 5, a sample gas inlet control valve, 6, a piston, 7, a control system, 8, a large bubble absorption pipe, 9, a constant-flow sample feeding port control valve, 10 and a cylinder.
Detailed Description
The utility model discloses an indoor air formaldehyde detection device structure and principle are shown in figure 1, compensating gas container 1 passes through the compensating gas air inlet of tube coupling cylinder 10, be equipped with compensating gas air inlet control valve 2 on the compensating gas air inlet, self sealss air bag 3 is through the sample air inlet of metal acquisition pipe 4 connection cylinder 10, be equipped with sample air inlet control valve 5 on the sample air inlet, the constant current of cylinder 10 is sent a kind mouth and is connected large-scale bubble absorption tube 8, the constant current is sent to be equipped with the constant current on the kind mouth and is sent a kind mouth control valve 9, piston 6 connection control system 7 in the cylinder 10.
When in use, the gas compensation and constant flow sample feeding device is connected as shown in figure 1, and the airtightness is checked. Inserting a metal collecting pipe from an air inlet of the self-sealing air bag, pumping a sample in the air bag into the air cylinder by using a piston and a control system of the gas compensation and constant-flow sample delivery device, and recording volume data. And pumping high-purity nitrogen or other gases which do not react with formaldehyde in a compensation gas container into a cylinder by using a piston and a control system of the gas compensation and constant-flow sample feeding device, and mixing the high-purity nitrogen or other gases with the original sample to 10L. And injecting the mixed gas into the absorption liquid in the large bubble absorption tube at a constant flow of 0.5L/min by using a gas compensation and constant flow sample feeding device piston and a control system to finish the sampling process of the sample. The minimum detection mass of the method is 0.56 mu g/V, wherein V is the volume of the sample in the air bag and is expressed in liters (L), and the recovery rate of the sample after 24 hours in the method is 86%. The standard limit of formaldehyde in the indoor air quality Standard GB/T18883 is 0.1mg/m3Therefore, the minimum volume of the air bag used in the method is 652mL, and 1L of self-sealing air is recommended to be selectedAn air bag. The utility model discloses collect indoor air sample with small volume (being not less than 652 mL) self-sealing air bag by oneself, send appearance equipment to handle the sample through gas compensation and constant current and make it reach the 10L back that the testing standard required, make its absorption liquid in through large-scale bubble absorption tube with 0.5L/min's flow again, accomplish the sampling process of sample.
Claims (2)
1. Indoor air formaldehyde detection device, its characterized in that: the compensating gas container (1) is connected with a compensating gas inlet of the cylinder (10) through a pipeline, a compensating gas inlet control valve (2) is arranged on the compensating gas inlet, the self-sealing air bag (3) is connected with a sample inlet of the cylinder (10) through a metal collecting pipe (4), a sample inlet control valve (5) is arranged on the sample inlet, a constant-current sample sending port of the cylinder (10) is connected with the large-scale bubble absorbing pipe (8), a constant-current sample sending port control valve (9) is arranged on the constant-current sample sending port, and a piston (6) in the cylinder (10) is connected with a control system (7).
2. The indoor air formaldehyde detecting device according to claim 1, characterized in that: the cylinder (10) is a 10L cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920483784.6U CN209784320U (en) | 2019-04-11 | 2019-04-11 | Indoor air formaldehyde detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920483784.6U CN209784320U (en) | 2019-04-11 | 2019-04-11 | Indoor air formaldehyde detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209784320U true CN209784320U (en) | 2019-12-13 |
Family
ID=68802215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920483784.6U Expired - Fee Related CN209784320U (en) | 2019-04-11 | 2019-04-11 | Indoor air formaldehyde detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209784320U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697967A (en) * | 2020-12-08 | 2021-04-23 | 澧县华丰建筑环保节能材料有限责任公司 | Inspection equipment and inspection method for detecting formaldehyde in interior decoration |
| CN112903373A (en) * | 2021-01-19 | 2021-06-04 | 亚楠(南京)环保科技有限公司 | Sampling equipment for preventing and treating formaldehyde pollution |
-
2019
- 2019-04-11 CN CN201920483784.6U patent/CN209784320U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697967A (en) * | 2020-12-08 | 2021-04-23 | 澧县华丰建筑环保节能材料有限责任公司 | Inspection equipment and inspection method for detecting formaldehyde in interior decoration |
| CN112903373A (en) * | 2021-01-19 | 2021-06-04 | 亚楠(南京)环保科技有限公司 | Sampling equipment for preventing and treating formaldehyde pollution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |