CN202886149U - Sampling collector of organic volatile compounds in product/sample - Google Patents
Sampling collector of organic volatile compounds in product/sample Download PDFInfo
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- CN202886149U CN202886149U CN 201220391461 CN201220391461U CN202886149U CN 202886149 U CN202886149 U CN 202886149U CN 201220391461 CN201220391461 CN 201220391461 CN 201220391461 U CN201220391461 U CN 201220391461U CN 202886149 U CN202886149 U CN 202886149U
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Abstract
The utility model belongs to a gas sampling instrument in the field of detection, and relates to a sampling collector of organic volatile compounds in a product/sample. The sampling collector comprises a sampling bag of which the inside is used for placing a product/sample, a vacuum pump, a gas cylinder, a constant-flow sampler, a gas flowmeter or gas volume control device which is used for controlling the volume of gas inflated into the sampling bag, wherein the vacuum pump, the gas cylinder and the constant-flow sampler can be connected with the sampling bag; an inlet used for putting the product/sample is formed in the sampling bag; and a pumping port, an air inlet and a sampling port are formed in the sampling bag, the pumping port and the air inlet are used for connecting the gas cylinder and the vacuum pump, and the sampling port is used for connecting the constant-flow sampler. The sampling collector has the beneficial effects of low cost and simplicity in operation, can be used for performing volatile pollutant sampling on the whole product/sample under the condition of not destroying the product/sample with low cost and easy realization, and can be used as a novel detection product sampling method or collecting device to replace the existing expensive environment simulating chamber method or other methods or devices which are difficult to use.
Description
Technical field
The invention belongs to detection field gas sampling method and instrument, relate to the sample collection device of organic volatile compound in a kind of product/sample, mainly for the collection of volatile contaminant.
Background technology
The volatility of product/sample is polluted and day by day is taken seriously.The product of newly buying is no matter be that furniture, wood-based plate or carpet, its volatility of wallpaper are polluted and be subject to people's extensive concern.For toxicity and the content that detects its volatile matter, country drops into larger physical resources and financial resources and carries out scientific research, but along with product emerges in an endless stream, the characteristic of new product is different, and the drawback of present detection method appears gradually.
At present in the product volatile contaminant detection method, mostly adopt the method that detects afterwards that gathers first, what adopt such as the collection of furniture burst size of methanal is " 9-11L exsiccator " method, with each position average sample of whole furniture, saw is made 10 of the test specimens of 150mm*50mm size, put into the 9-11L exsiccator behind the inside back cover limit, collected formaldehyde 24 hours with 300mL distilled water, the solution concentration behind the formaldehyde is collected in detection.Environmental experiment cabin method is that furniture integral body is put into environmental test chamber, the laggard promoting the circulation of qi sampler body of balance under the environment of uniform temperature, humidity, gas velocity, and the concentration of formaldehyde or VOC is judged the release conditions of furniture in the analytical gas.Except family product, the volatile contaminant of the products such as automotive upholstery, wood-based plate also is to adopt the environmental test chamber method to detect at present.But the environmental test chamber method is owing to need not destroy the advantage of product/sample analog equipment/sample normal operating condition, so present many products, such as: new wooden furniture standard, part soft furniture all adopt the environmental test chamber method such as carpet etc., yet environmental experiment cabin method is owing to have relatively high expectations to the cabin body, need expensive, the shortcomings such as energy consumption is high, and testing cost is high, and sense cycle is long still can't overcome.
Summary of the invention
The present invention provides the sample collection device of organic volatile compound in low, the easy-operating product/sample of a kind of cost in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
The sample collection device of organic volatile compound in product/sample of the present invention, it is characterized in that: comprise the inner sampler bag that is used for placing product/sample, also comprise vacuum pump, gas cylinder and the constant current sampling thief that can be connected with sampler bag, and the gas meter or the control device that are used for being filled with in the control sampler bag gas volume, sampler bag is provided be used to the entrance of putting into product/sample, also be provided with for connect gas cylinder be connected with vacuum pump take out, air intake opening and be connected the thief hatch of connection constant current sampling thief.
When adopting automatically control, adopt control device, control device connects vacuum pump, gas cylinder, constant current sampling thief and sampler bag, the built-in air flow sensor of control device and gauge tap.
When adopting manually control, adopt gas meter, sampler bag is connected gas cylinder by connecting pipe with three-way pipe, and gas meter is installed in the exit of gas cylinder, another of three-way pipe mouthful connection vacuum pump or constant current sampling thief.Connect vacuum pump when bleeding, connect the constant current sampling thief during sampling.Vacuum pump and gas cylinder are respectively equipped with valve.
Described sampler bag by aluminium foil compound or PP, PE material make, the porch that is used for putting into product/sample can adopt a certain mode of mode of slide fastener, buckle, heat-sealing or folding clamping to seal.
Described sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon, size is corresponding with product/sample.
Take out, air intake opening, thief hatch, be used for putting into entrance and the connecting pipe of product/sample, adopt that teflon, stainless steel, silicon rubber, high-quality polyurethanes are low to be discharged or make without the material that discharges.
The in-built pure air of described gas cylinder or nitrogen.
The organic volatile method of sampling in product/sample: under the certain environment temperature, product/sample that needs detect is put into sampler bag, vacuumize, be filled with again pure air or the nitrogen of certain volume, balance gathers air sample after a period of time, thereby judges the release conditions of pollutant.
The invention has the beneficial effects as follows, cost is low, easy to operate, by the method and gatherer, can in the situation of not destroying product/sample, carry out the volatile contaminant sampling to whole product/sample, it is low to have cost, easily realize, can be used as a kind of method of sampling or harvester of novel testing product, substitute environmental experiment cabin method or other not wield method or the device of existing costliness.
Description of drawings
Fig. 1 is the structural representation of the present invention when automatically sampling.Fig. 2 is the structural representation of the present invention when manually sampling.
Among the figure, 1 product/sample, 2 sampler bags, 3 connecting pipes, 4 control device, 5 constant current sampling thiefs, 6 vacuum pumps, 7 gas cylinders, 8 gas meters, 9 three-way pipes.
Embodiment
1, this sampling thief is comprised of following part as shown in Figure 1:
The sample collection device of organic volatile compound in product/sample of the present invention, comprise the inner sampler bag 2 that is used for placing product/sample 1, also comprise vacuum pump 6, gas cylinder 7 and the constant current sampling thief 5 that can be connected with sampler bag, and the control device 4 that is used for being filled with in the control sampler bag gas volume, sampler bag is provided be used to the entrance of putting into product/sample, also be provided with for connect gas cylinder be connected with vacuum pump take out, air intake opening and be connected the thief hatch of connection constant current sampling thief.
When adopting automatically control, adopt in the control device control sampler bag and be filled with gas volume, control device connects vacuum pump, gas cylinder, constant current sampling thief and sampler bag, and the built-in air flow sensor of control device, connecting pipe and gauge tap form.
Sampler bag is provided with and takes out, air intake opening and thief hatch, take out, air intake opening, this mouth can be designed to one, two or three, connect vacuum pump and gas cylinder by connecting pipe, vacuum pump and gas cylinder are respectively equipped with valve, can be thus mouthful quantitatively take out, the operation thief hatchs such as air inlet, sampling connect the constant current sampling thief.Sampler bag leaves the entrance of putting into product/sample, a certain mode sealed composite bag of the available buckle of this mouthful, slide fastener, heat-sealing or folding clamping.Connecting pipe adopts the material that does not discharge or hang down release to make.Take out, air intake opening, thief hatch, be used for putting into entrance and the connecting pipe of product/sample, adopt that teflon, stainless steel, silicon rubber, high-quality polyurethanes are low to be discharged or make without the material that discharges.Sampler bag by aluminium foil compound or PP, PE material make.Sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon, size is corresponding with product/sample.
Gas cylinder: in-built pure air or nitrogen etc.
The constant current sampling thief: stability of flow, when with packed column adjustments of gas flow velocity and when adopting one-level soap film flowmeter calibrated fluxes, error was less than 5% before and after flow should satisfy.
Control device is comprised of gas flow sensor, connecting pipe and gauge tap etc., at first regulates the control quick closing valve to the sampler bag operation of bleeding; Then regulation control switch pours the volume number of gas in the sampler bag to aerification function by gas flow sensor control.
Coupling arrangement: i.e. connecting pipe or tracheae, be used for connecting gas cylinder with airbag or airbag with the constant current sampling thief.Can select metal tube, polyfluortetraethylene pipe or high-quality polyurethanes without the material pipe that discharges according to actual conditions.
2, collecting flowchart
(1) the testing environment temperature is controlled under the interior a certain temperature of 15-75 ℃ of scope, can carry out in the room of the thermostatic constant wet chamber with enough accuracy and scope or air-conditioning.
(2) product/sample, sampler bag, gas cylinder were placed under above-mentioned environment 1 hour-28 days, the concrete time can arrange as required.
(3) product/sample is put into sampler bag, and sealing, follow gas cylinder to receive in vacuum pump and be drawn into gas port.Open vacuum pump, when the vacuum tightness in the sampler bag reaches required value, close vacuum pump, then be filled with pure air or nitrogen by gas cylinder, automatically stopping inflation after reaching the setting gas volume (can repeat to vacuumize, to guarantee cleaning gas in the bag), product/sample 1 hour-28 days (the concrete time arranges as required) rear gauge tap of balance in sampler bag forward on the constant current sampling thief.Open the constant current sampling thief and sample, sampling gained gas is adsorbed the volatile organic matter that gathers in the gas with adsorption tube.
(4) calculating of pollutant, load-carry duty should be counted (ratio of the ratio of product/surface area of sample and the volume of complex pocket or product/sample volume and complex pocket volume, product/sample can adopt sciagraphy to carry out the surface area of counting yield/sample with reference to relevant criterion when too complicated).
Should detect simultaneously the background concentration of blank sampler bag when (5) detecting.Acquisition method is identical with the acquisition method of built-in product/sample.
1, this sampling thief is comprised of following part as shown in Figure 1:
The sample collection device of organic volatile compound in product/sample of the present invention comprises the inner sampler bag 2 that is used for placing product/sample 1, also comprises vacuum pump 6, gas cylinder 7 and the constant current sampling thief 5 that can be connected with sampler bag, connecting pipe 3,
Three-way pipe 9 , and for detection of the gas meter 8 that is filled with gas volume in the sampler bag, sampler bag is provided be used to the entrance of putting into product/sample, also be provided with for connect gas cylinder be connected with vacuum pump take out, air intake opening and be connected the thief hatch of connection constant current sampling thief.
When adopting manually control, adopt gas meter, sampler bag is connected with three-way pipe by connecting pipe 3 and is connected gas cylinder, the exit installing gas flowmeter 8 of gas cylinder, another of three-way pipe mouthful connection vacuum pump 6 or constant current sampling thief 5.Connect vacuum pump when bleeding, connect the constant current sampling thief during sampling.
Sampler bag is provided with and takes out, air intake opening and thief hatch, take out, air intake opening, this mouth can be designed to one, two or three, connect vacuum pump and gas cylinder by connecting pipe, vacuum pump and gas cylinder are respectively equipped with valve, can be thus mouthful quantitatively take out, the operation thief hatchs such as air inlet, sampling connect the constant current sampling thief.Sampler bag leaves the entrance of putting into product/sample, a certain mode sealed composite bag of the available buckle of this mouthful, slide fastener, heat-sealing or folding clamping.Connecting pipe adopts the material that does not discharge or hang down release to make.Take out, air intake opening, thief hatch, be used for putting into entrance and the connecting pipe of product/sample, adopt that teflon, stainless steel, silicon rubber, high-quality polyurethanes are low to be discharged or make without the material that discharges.Sampler bag by aluminium foil compound or PP, PE material make.Sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon, size is corresponding with product/sample.
Gas cylinder: in-built pure air or nitrogen.
The constant current sampling thief: stability of flow, when with packed column adjustments of gas flow velocity and when adopting one-level soap film flowmeter calibrated fluxes, error was less than 5% before and after flow should satisfy.
Coupling arrangement: i.e. tracheae, be used for connecting gas cylinder with airbag or airbag with the constant current sampling thief.Can select metal tube, polyfluortetraethylene pipe or high-quality polyurethanes without the pipe that discharges material.
2, collecting flowchart
Sample/product is put into sampler bag, and sealing, vacuum pump is linked in the threeway with the taking out of gas cylinder, sampler bag, air intake opening, when the vacuum tightness in the sampler bag reaches required value, close vacuum pump, then be filled with the clean gas of certain volume by gas cylinder, (can repeat to vacuumize to guarantee the cleaning of gas in the sampler bag).After being filled with gas, with product/sample balance 1 hour-28 days (the concrete time arranges as required) in sampler bag, the constant current sampling thief is received (position that replaces vacuum pump or gas cylinder) in the threeway.Open the constant current sampling thief and sample, sampling gained gas is adsorbed the volatile organic matter that gathers in the gas with adsorption tube.
(4) calculating of pollutant, load-carry duty should be counted (ratio of the ratio of product/surface area of sample and the volume of complex pocket or product/sample volume and complex pocket volume, product/sample can adopt sciagraphy to carry out the surface area of counting yield/sample with reference to relevant criterion when too complicated).
(5) should at first detect the background concentration of blank sampler bag before detecting.Acquisition method is identical with the acquisition method of built-in product/sample.
Claims (7)
1. the sample collection device of organic volatile compound in the product/sample, it is characterized in that: comprise the inner sampler bag that is used for placing product/sample, also comprise vacuum pump, gas cylinder, the constant current sampling thief that can be connected with sampler bag, and the gas meter or the control device that are used for being filled with in the control sampler bag gas volume, sampler bag is provided be used to the entrance of putting into product/sample, also be provided with for connect gas cylinder be connected with vacuum pump take out, air intake opening and be connected the thief hatch of connection constant current sampling thief.
2. the sample collection device of organic volatile compound in product/sample according to claim 1, it is characterized in that: when adopting automatically control, adopt control device, control device connects vacuum pump, gas cylinder, constant current sampling thief and sampler bag, the built-in air flow sensor of control device and gauge tap.
3. the sample collection device of organic volatile compound in product/sample according to claim 1, it is characterized in that: when adopting manually control, adopt gas meter, sampler bag is connected gas cylinder by connecting pipe with three-way pipe, gas meter is installed in the exit of gas cylinder, another of three-way pipe mouthful connection vacuum pump or constant current sampling thief.
4. the sample collection device of organic volatile compound according to claim 2 or in 3 described product/samples, it is characterized in that: sampler bag is made by foil laminated film or PP, PE; Adopt the mode of slide fastener, buckle or heat-sealing to seal for the porch of putting into product/sample.
5. the sample collection device of organic volatile compound according to claim 2 or in 3 described product/samples is characterized in that: sampler bag be shaped as rectangular parallelepiped, square or quadrilateral.
6. the sample collection device of organic volatile compound according to claim 2 or in 3 described product/samples, it is characterized in that: take out, air intake opening, thief hatch, be used for putting into entrance and the connecting pipe of product/sample, adopt teflon, stainless steel, silicon rubber, high-quality polyurethane material to make.
7. the sample collection device of organic volatile compound according to claim 2 or in 3 described product/samples is characterized in that: the in-built pure air of gas cylinder or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391461 CN202886149U (en) | 2012-08-09 | 2012-08-09 | Sampling collector of organic volatile compounds in product/sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391461 CN202886149U (en) | 2012-08-09 | 2012-08-09 | Sampling collector of organic volatile compounds in product/sample |
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|---|---|
| CN202886149U true CN202886149U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220391461 Expired - Fee Related CN202886149U (en) | 2012-08-09 | 2012-08-09 | Sampling collector of organic volatile compounds in product/sample |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764862A (en) * | 2015-05-05 | 2015-07-08 | 西安近代化学研究所 | Gas concentration site testing method |
| CN105890935A (en) * | 2016-05-31 | 2016-08-24 | 黑龙江省科学院科技孵化中心 | Simple fermentation gas collecting and measuring device and measuring method thereof |
| CN106814163A (en) * | 2017-01-22 | 2017-06-09 | 沈阳紫微机电设备有限公司 | Sack method tests formaldehyde, the device and method of VOC in furniture and decorating and renovating material |
| CN110133197A (en) * | 2019-05-31 | 2019-08-16 | 中车株洲电力机车有限公司 | The quick detection of formaldehyde and TVOC and continuous detecting method |
| CN111289296A (en) * | 2020-03-02 | 2020-06-16 | 鹤壁市赛科化工有限公司 | Liquid sampler |
-
2012
- 2012-08-09 CN CN 201220391461 patent/CN202886149U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764862A (en) * | 2015-05-05 | 2015-07-08 | 西安近代化学研究所 | Gas concentration site testing method |
| CN104764862B (en) * | 2015-05-05 | 2016-08-17 | 西安近代化学研究所 | A kind of gas concentration on-the-spot test method |
| CN105890935A (en) * | 2016-05-31 | 2016-08-24 | 黑龙江省科学院科技孵化中心 | Simple fermentation gas collecting and measuring device and measuring method thereof |
| CN106814163A (en) * | 2017-01-22 | 2017-06-09 | 沈阳紫微机电设备有限公司 | Sack method tests formaldehyde, the device and method of VOC in furniture and decorating and renovating material |
| CN106814163B (en) * | 2017-01-22 | 2020-01-10 | 沈阳紫微恒检测设备有限公司 | Device and method for testing formaldehyde and VOC (volatile organic compounds) in furniture and decoration materials by bag method |
| CN110133197A (en) * | 2019-05-31 | 2019-08-16 | 中车株洲电力机车有限公司 | The quick detection of formaldehyde and TVOC and continuous detecting method |
| CN111289296A (en) * | 2020-03-02 | 2020-06-16 | 鹤壁市赛科化工有限公司 | Liquid sampler |
| CN111289296B (en) * | 2020-03-02 | 2023-08-25 | 鹤壁市赛科化工有限公司 | Liquid sampler |
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| Date | Code | Title | Description |
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| 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: 20130417 Termination date: 20130809 |