CN201382932Y - Artificial board methanal emission rate detecting instrument - Google Patents
Artificial board methanal emission rate detecting instrument Download PDFInfo
- Publication number
- CN201382932Y CN201382932Y CN200920040367U CN200920040367U CN201382932Y CN 201382932 Y CN201382932 Y CN 201382932Y CN 200920040367 U CN200920040367 U CN 200920040367U CN 200920040367 U CN200920040367 U CN 200920040367U CN 201382932 Y CN201382932 Y CN 201382932Y
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- China
- Prior art keywords
- formaldehyde
- artificial board
- amplifying circuit
- burst size
- methanal
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Abstract
The utility model discloses an artificial board methanal emission rate detecting instrument, which comprises a climate box (1) used for positioning a sample and outputting mixed gas, a methanal sensor (5) used for detecting the methanal content in mixed gas, a signal control amplifying circuit (7) which is connected with the methanal sensor (5), controls the sampling of the methanal sensor and compares, amplifies and outputs the sampling signal and an LED display (8) which is used for displaying the methanal concentration and is connected with the signal control amplifying circuit (7). The detection speed of the instrument is quick, the running cost is low, and the precision is high.
Description
Technical field
The utility model relates to a kind of gas detecting instrument, particularly a kind of artificial board formaldehyde burst size detector.
Background technology
At present, the detection of artificial board formaldehyde burst size adopts perforation extraction, exsiccator method, climate box method, chemical reagent analytic approach etc. to carry out mostly.Wherein extraction is simple, and is easy to operate, discharges the pollution to environment but test result can not directly reflect formaldehyde; Adopt titrimetry when the exsiccator method is demarcated formaldehyde, but this method measuring accuracy is low, test specification is narrow; The climate box method can accurately be simulated actual environment, but this testing apparatus volume is big, the cost height, tested wood-based plate sample is put into about one cubic metre test box, treat that the wood-based plate sample formaldehyde in it discharges, then wherein mixed gas detected that this process time is very long, may continue 28 days at most, so test period is oversize; Chemical-agent technique reagent expense height, those skilled in the art are difficult to operation.
Summary of the invention
The utility model provides the artificial board formaldehyde burst size that a kind of detection speed is fast, operating cost is low, precision is high detector.
The technical solution of the utility model is as follows: a kind of artificial board formaldehyde burst size detector, comprise and be used to the climate box placing sample and export mixed gas, it also comprises the formaldehyde sensor that is used to detect the mixed gas concentration of formaldehyde, be connected, control the formaldehyde sensor sampling work and sampled signal is relatively amplified the signal controlling amplifying circuit of output with described formaldehyde sensor, being connected with the signal controlling amplifying circuit shows the light-emitting diode display of concentration of formaldehyde.
Be provided with well heater in the utility model mesoclimate case, described well heater is connected with temperature controller and is heated by its control; Described climate box is provided with mixed gas outlet, and mixed gas outlet leads to formaldehyde sensor by wireway, and described wireway is provided with air pump.
Described signal controlling amplifying circuit comprises the comparison amplifying circuit that the formaldehyde sensor signal is amplified output; Described signal controlling amplifying circuit comprises that the control air pump is bled, the timing circuit of formaldehyde sensor sampling.Be provided with blower fan in the described climate box, the air outlet of blower fan is facing to well heater; Described well heater is a strip heater.
The utility model places climate box with wood-based plate, climate box heating is allowed formaldehyde snap-out release at high temperature, with air pump mixed gas in the climate box is sent into formaldehyde sensor, formaldehyde sensor produces output signal, its size is corresponding with concentration of formaldehyde, output signal is handled output formaldehyde gas concentration value through the signal controlling amplifying circuit, and is shown by light-emitting diode display.The utility model adopts the climate box heating to quicken to allow the formaldehyde snap-out release test then according to the formaldehyde characteristics of snap-out release at high temperature, and detection speed is fast, operating cost is low.Employing formaldehyde sensor sampling, circuit be to the weak electric signal processing and amplifying, the precision height.The utility model is simple in structure in addition, and volume is little.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Embodiment: according to Fig. 1, shown in Figure 2, a kind of artificial board formaldehyde burst size detector, it mainly is made of following assembly: be used to the climate box 1 placing sample and export mixed gas, be used to detect the formaldehyde sensor 5 of mixed gas content of formaldehyde, be connected, control formaldehyde sensor 5 sampling works and sampled signal is relatively amplified the signal controlling amplifying circuit 7 of output, the light-emitting diode display 8 that is connected and shows concentration of formaldehyde with signal controlling amplifying circuit 7 with described formaldehyde sensor 5.
Also be provided with the support of placing wood-based plate sample 2 in the climate box 1, to the well heater 3 and the blower fan 10 of climate box heating, described well heater 3 be a strip heater, well heater 3 is by temperature controller 4 control heating, the air outlet of blower fan 10 faces toward well heater 3.Be provided with wireway 11 between the mixed gas outlet of climate box 1 and the formaldehyde sensor 5, wireway 11 is provided with air pump 6, and mixed gas is pumped to formaldehyde sensor 5.
Described signal controlling amplifying circuit comprises the comparison amplifying circuit that the formaldehyde sensor signal is amplified output, and it is made up of uA741 amplifier and resistance R 1, R2, R3, R4, R5, R13, adjustable potentiometer A, B.Described signal controlling amplifying circuit comprises that the control air pump is bled, the timing circuit of formaldehyde sensor sampling, and it is made up of HB4541 and resistance R 7, R8, R9, capacitor C 5, C6, C7, adjustable potentiometer D and triode 9014.The signal controlling amplifying circuit adopts 9 power supplies of 5V/220V transformer.TA is the temperature controller power switch among Fig. 2, and TB1, TB2 are double-pole switches, and TB1 is the timing circuit power switch, and TB2 is the air pump power switch, and TC is the power switch of comparison amplifying circuit.
The utility model is manipulated like this:
1. specimen 2 is put on the climate box inner support, closed chamber door.
2. press the TA switch, temperature controller shows temperature value in the current climate box; Temperature controller detects weather the temperature inside the box and indoor temperature, and definite temperature state of a control.Heat beginning, blower fan work is dispelled the heat to well heater, and plays air in the circulation climate box, makes air themperature equilibrium in the climate box.When the temperature inside the box was raised to 40 ℃, well heater quit work, and kept constant temperature.
3. constant temperature relief specimen reached capacity the formaldehyde release concentration in 20 minutes in climate box continuation release, can carry out artificial board formaldehyde burst size and detect.
4. press the TC switch, the LED display digit.
5. after instrument cleaned the interior about 3min of residuals of formaldehyde sensor automatically, it was 0.00 that trimmer potentiometer A makes numeral.
6. press the TB switch, the L pilot lamp is bright, and in wireway suction formaldehyde sensor, formaldehyde sensor and formaldehyde gas produce electrochemical chemical reaction to air pump with mixed gas in the climate box, the signal that produces produces millivolt voltage through the uA741 amplifier, and this millivolt voltage is sent into LED and shown.
Timing circuit HB4541 also starts working after pressing the TB switch, and the timing circuit design time is 3 minutes, because the response time of formaldehyde sensor is in 0-90 second.
7. after about 3 minutes, buzzer warning rings.
8. note demonstration numerical value, be burst size of methanal concentration value data.
9. shutdown is pressed TB, TC, TA withdraws from trace routine.
Claims (7)
1, a kind of artificial board formaldehyde burst size detector, comprise and be used to the climate box (1) placing sample and export mixed gas, it is characterized in that it also comprises the formaldehyde sensor (5) that is used to detect the mixed gas concentration of formaldehyde, be connected, control the formaldehyde sensor sampling work and sampled signal is relatively amplified the signal controlling amplifying circuit (7) of output, the light-emitting diode display (8) that is connected and shows concentration of formaldehyde with signal controlling amplifying circuit (7) with described formaldehyde sensor (5).
2, a kind of artificial board formaldehyde burst size detector according to claim 1 is characterized in that being provided with in the climate box (1) well heater (3), and described well heater (3) is connected with temperature controller (4) and is heated by its control.
3, according to claim 1 or 2 described a kind of artificial board formaldehyde burst size detectors, it is characterized in that described climate box (1) is provided with mixed gas outlet, mixed gas outlet leads to formaldehyde sensor (5) by wireway (11), and described wireway (11) is provided with air pump (6).
4, a kind of artificial board formaldehyde burst size detector according to claim 3 is characterized in that described signal controlling amplifying circuit (7) comprises the comparison amplifying circuit that the formaldehyde sensor signal is amplified output.
5, a kind of artificial board formaldehyde burst size detector according to claim 3 is characterized in that described signal controlling amplifying circuit (7) comprises that control air pump (6) is bled, the timing circuit of formaldehyde sensor (5) sampling.
6, a kind of artificial board formaldehyde burst size detector according to claim 3 is characterized in that being provided with in the described climate box (1) blower fan (10), and the air outlet of blower fan (10) is facing to well heater (3).
7, a kind of artificial board formaldehyde burst size detector according to claim 3 is characterized in that described well heater (3) is a strip heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920040367U CN201382932Y (en) | 2009-04-21 | 2009-04-21 | Artificial board methanal emission rate detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920040367U CN201382932Y (en) | 2009-04-21 | 2009-04-21 | Artificial board methanal emission rate detecting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201382932Y true CN201382932Y (en) | 2010-01-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920040367U Expired - Fee Related CN201382932Y (en) | 2009-04-21 | 2009-04-21 | Artificial board methanal emission rate detecting instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN201382932Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995452A (en) * | 2010-10-25 | 2011-03-30 | 东莞市升微机电设备科技有限公司 | Test chamber for rapidly detecting release amount of formaldehyde in artificial board and product |
| WO2012130006A1 (en) * | 2011-03-31 | 2012-10-04 | 香港纺织及成衣研发中心有限公司 | Method and system for measuring formaldehyde content in fabrics |
| CN102788866A (en) * | 2012-08-27 | 2012-11-21 | 重庆长江造型材料（集团）有限公司 | Device for detecting waste gas generated in resin precoated sand core preparation curing process |
| CN103018427A (en) * | 2012-12-27 | 2013-04-03 | 紫罗兰家纺科技股份有限公司 | Instrument for testing and demonstrating article gas release |
| CN103529172A (en) * | 2013-10-24 | 2014-01-22 | 杨奠基 | Method and device for demonstrating formaldehyde release amount of decorative materials in stores and device thereof |
| CN104697942A (en) * | 2013-12-05 | 2015-06-10 | 张双保 | Comparison of determination methods for formaldehyde content of wood-based plates |
| CN106153826A (en) * | 2016-08-04 | 2016-11-23 | 杭州麦乐克电子科技有限公司 | There is the formaldehyde detector of heating function |
| CN110244031A (en) * | 2019-06-28 | 2019-09-17 | 江苏省环境科学研究院 | A kind of wood-based plate VOC release measuring |
| CN110632255A (en) * | 2019-08-22 | 2019-12-31 | 广州质量监督检测研究院 | Device and method for rapidly testing formaldehyde emission of artificial board product |
| CN112255068A (en) * | 2020-12-23 | 2021-01-22 | 南京济同检测科技有限公司 | Environment-friendly building material formaldehyde check out test set |
| CN113702581A (en) * | 2021-08-20 | 2021-11-26 | 河南农业大学 | Automatic online detection method for formaldehyde emission of artificial board |
-
2009
- 2009-04-21 CN CN200920040367U patent/CN201382932Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995452A (en) * | 2010-10-25 | 2011-03-30 | 东莞市升微机电设备科技有限公司 | Test chamber for rapidly detecting release amount of formaldehyde in artificial board and product |
| CN101995452B (en) * | 2010-10-25 | 2013-07-10 | 东莞市升微机电设备科技有限公司 | Test chamber for rapidly detecting release amount of formaldehyde in artificial board and product |
| CN102735717B (en) * | 2011-03-31 | 2015-09-30 | 香港纺织及成衣研发中心有限公司 | Measure the method and system of fabric formaldehyde content |
| WO2012130006A1 (en) * | 2011-03-31 | 2012-10-04 | 香港纺织及成衣研发中心有限公司 | Method and system for measuring formaldehyde content in fabrics |
| CN102735717A (en) * | 2011-03-31 | 2012-10-17 | 香港纺织及成衣研发中心有限公司 | Method for measuring content of formaldehyde in fabrics and system |
| CN102788866A (en) * | 2012-08-27 | 2012-11-21 | 重庆长江造型材料（集团）有限公司 | Device for detecting waste gas generated in resin precoated sand core preparation curing process |
| CN103018427B (en) * | 2012-12-27 | 2016-01-20 | 紫罗兰家纺科技股份有限公司 | A kind of to article air release test demonstration instrument |
| CN103018427A (en) * | 2012-12-27 | 2013-04-03 | 紫罗兰家纺科技股份有限公司 | Instrument for testing and demonstrating article gas release |
| CN103529172A (en) * | 2013-10-24 | 2014-01-22 | 杨奠基 | Method and device for demonstrating formaldehyde release amount of decorative materials in stores and device thereof |
| CN104697942A (en) * | 2013-12-05 | 2015-06-10 | 张双保 | Comparison of determination methods for formaldehyde content of wood-based plates |
| CN106153826A (en) * | 2016-08-04 | 2016-11-23 | 杭州麦乐克电子科技有限公司 | There is the formaldehyde detector of heating function |
| CN110244031A (en) * | 2019-06-28 | 2019-09-17 | 江苏省环境科学研究院 | A kind of wood-based plate VOC release measuring |
| CN110632255A (en) * | 2019-08-22 | 2019-12-31 | 广州质量监督检测研究院 | Device and method for rapidly testing formaldehyde emission of artificial board product |
| CN112255068A (en) * | 2020-12-23 | 2021-01-22 | 南京济同检测科技有限公司 | Environment-friendly building material formaldehyde check out test set |
| CN113702581A (en) * | 2021-08-20 | 2021-11-26 | 河南农业大学 | Automatic online detection method for formaldehyde emission of artificial board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20120421 |