CN203534871U - Mildew smell distribution type sampling device for stored grains - Google Patents
Mildew smell distribution type sampling device for stored grains Download PDFInfo
- Publication number
- CN203534871U CN203534871U CN201320711859.4U CN201320711859U CN203534871U CN 203534871 U CN203534871 U CN 203534871U CN 201320711859 U CN201320711859 U CN 201320711859U CN 203534871 U CN203534871 U CN 203534871U
- Authority
- CN
- China
- Prior art keywords
- grain
- gas
- smell
- goes mouldy
- sampled point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005070 sampling Methods 0.000 title claims abstract description 51
- 239000003463 adsorbent Substances 0.000 claims description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000000428 dust Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 1
- 235000013339 cereals Nutrition 0.000 description 69
- 239000007789 gas Substances 0.000 description 31
- 230000035943 smell Effects 0.000 description 26
- 238000000034 method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 239000012855 volatile organic compound Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000544 Gore-Tex Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- MARDFMMXBWIRTK-UHFFFAOYSA-N [F].[Ar] Chemical compound [F].[Ar] MARDFMMXBWIRTK-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 235000019605 sweet taste sensations Nutrition 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a mildew smell distribution type sampling device for stored grains, which includes sampling points, a sampler and an air pump, wherein the sampling points are round hollow cylinders, small holes are distributed in the side walls of the round cylinders, filter screens cover the inner sides of the side walls of the round cylinders, and the sampling points are arranged at places requiring mildew gas acquisition; the sampler is used for acquiring mildew gas from the sampling points, releasing the gas after acquisition, and conveying the gas to detection equipment; the air pump is placed at the gas tail end of the sampler and is used for extracting the gas released by the sampler; the sampler is communicated with the air pump through a main connecting pipe; each of the two ends of each sampling point is connected onto the main connecting pipe through a three-way valve, and the selection of the sampling points is realized through the arrangement of the on/off state of the valves of the three-way valves. The mildew smell distribution type sampling device has the advantages that mildew smell is obtained in a gas free diffusion manner, and is conveyed through flowing of external gas, so that dust pollution and pipeline blockage brought by negative pressure generated by air pumping are avoided.
Description
Technical field
The utility model belongs to detection technique field, is specifically related to a kind of stored grain smell distributed sample technology of going mouldy.
Background technology
It is the problem that extensive grain storage must solve that grain goes mouldy.The bottom line of guaranteeing the basic grain security of China is that annual national total output of grain at least increases by 1%.Need annual input to exceed 100 billion for this reason, and other flood tide manpower and materials, and the grain post-harvest loss that China causes because going mouldy is every year up to 2,100 ten thousand tons, accounts for 4.2% of national total output of grain, is to increase every year more than 4 times of grain yield newly.Therefore, grasping in real time the memory state of stored grain, find in time, locate and remove a hidden danger, guarantee grain storage quality, is the emphasis of grain reserves operation maintenance now.
In practical application at present, detection method is: by measuring cereal temperature, humidity, and compare estimation with data in the past; If note abnormalities, the slotting grain heap of employing iron, pin are stepped on grain face, hand is taken off the modes such as grain heap and checked grain free flowability; Sample detects grain storage moisture with instrument, and microorganism cultivation is done in laboratory.As No. 201010250248.5 Patent Application Publication of China a kind of " grain grain depot in grain temperature-humidity detecting device ", Chinese patent the 200810055014.8th discloses a kind of " digital sensing device of on-line measurement grain depot foodstuffs temperature, moisture ".But adopt said method can find in time that grain goes mouldy, and depends on testing staff's working experience.
The grain essence of going mouldy is the inner microbial activities process of grain, except changing appearance luster, the hardness of grain grain, also can generate organic volatile compound (the volatile organic compound such as the hydroxy kind of a large amount of carbon numbers between 7-8, aldehyde radical class, ketone group class, sulfide, thereby give out musty, breathe out and to lose the smells that go mouldy such as taste, tapinoma-odour or sweet taste VOC).With regard to technical difficulty and cost, odor detection is that current stored grain goes mouldy and is easy to the mode that realizes in robotization detection field most.As Chinese patent application discloses " a kind of device for detecting activity of stored grain and method thereof " No. 200910079043.2, this device comprises: micro air pump, for draw the smell of grain from grain samples tank; Sensor array, connects micro air pump, for exporting and the rear electric signal producing of smell interaction; Signal sampling and change-over circuit, connect micro air pump, sensor array, for controlling the work of micro air pump, from sensor array sampling electric signal and carry out conversion process; And computing machine, connect signal sampling and treatment circuit, work for control signal sampling with change-over circuit, carries out eigenwert to the data after signal sampling and change-over circuit processing and extracts and analyze, and according to analysis result, the quality of grain and/or level of activity are passed judgment on.And for example Chinese patent application discloses a kind of " Portable type rapid detection device for grain storage quality of grain depot " No. 201210013707.7, comprises gas sampling assembly and micro treatmenting device; Described gas sampling assembly comprises housing, is provided with gas sensor in housing; The housing of described gas sensor one side is provided with unidirectional cutoff gas admittance valve, and the housing of opposite side is provided with micro air pump and unidirectional cutoff air release, and described micro air pump is connected with unidirectional cutoff air release; Described gas sensor is connected with micro treatmenting device by sensor interface.Above-mentioned patent is only limited to the detection method of the gas that goes mouldy, and does not relate to the collection method of the gas that goes mouldy.
Whether US Patent No. adopts for No. 4314027 adsorbent to collect the VOC material that grain samples is distributed, in the VOC material that then uses gas chromatograph analysis to collect, exist and the relevant material that goes mouldy.Adsorbent has certain selectivity, can sample pointedly and the relevant material that goes mouldy.Gas chromatograph is comprised of chromatographic column and detecting device, and chromatographic column can separated different VOC material, is detected successively composition and the concentration of various materials by detecting device.But sampling grain samples, the air intake opening that the sampling pipe of filled with adsorbent is installed to gas chromatograph still need manual operation, not yet realize robotization.
Grain go mouldy be by the initial stage to serious, by part, expanded gradually, therefore Discovery Significance is great as early as possible.Due to grain storage interior solid, between grain grain, space is less, and gas is difficult for diffusion, and the gas sensor that is arranged on grain heap superjacent air space cannot record the situation of going mouldy in grain heap, affects the opportunity that discovery is gone mouldy adversely.If installing gas sensor in each test point in grain heap cannot bear on cost.Although gas sensor technology just starts to be applied to go mouldy detection many years ago, still needs sample, the sample analysis that takes a morsel, can only, as the supplementing of traditional monitoring method, can not reduce cost of labor so gas detects.
The difficult point of grain storage internal gas sampling is at present, grain heap interior solid, and there are a large amount of dust, and bleed and need high-power air pump, inevitably also bring dust into pipeline, to detecting, cause interference, even blocking pipe.
Utility model content
The technical problems to be solved in the utility model is to provide stored grain that a kind of grain of on-line sampling accurately piles the smell that goes mouldy of the inner assigned address smell distributed sample device that goes mouldy.
The utility model solves the problems of the technologies described above by the following technical solutions: a kind of stored grain smell distributed sample device that goes mouldy, comprising:
Sampled point (1) is a hollow cylinder, is distributed with aperture on cylinder side wall, and cylinder side wall inner side is coated with screen pack.Aperture and screen pack are isolated in sampled point (1) outside by grain grain, dust and water droplet, and near sampled point (1), the smell that goes mouldy of grain can diffuse in the cavity of sampled point (1) and reach balance.Sampled point (1) is arranged on diverse location in grain heap and other place of gas of going mouldy of need to sampling.
Sampling thief (2) is for collecting the smell that goes mouldy from sampled point (1), and discharge after collecting, flow to corresponding checkout equipment, described sampling thief (2) is comprised of adsorbent (8), container (9) and well heater (10) three parts, adsorbent (8) is filled in container (9), well heater (10) is placed in outside container (9), and adsorbent (8) is heated;
Air pump (3) is placed in the air-flow end of above-mentioned sampling thief (2), the gas that extracting sampler (2) discharges;
Sampling thief (2), air pump (3) are communicated with by main connecting pipe (6), and two ends of sampled point (1) are connected on main connecting pipe (6) by a T-valve (7) separately.By being set, the on off state of the valve of corresponding T-valve (7) realizes the selection of sampled point (1);
Sampled point (1) and T-valve (7) are arranged in grain heap; Sampling thief (3) is arranged on grain out-pile; Air pump (4) is arranged on grain out-pile.
Concrete, the hole diameter on described cylinder side wall at 0.3mm between 0.7mm, preferred 0.5mm.
Further concrete is, go mouldy in smell sampling process, air-flow, from external environment, by filtrator (5), flow controller (4), sampled point (1), sampling thief (2), air pump (3), returns external environment successively.Air-flow is brought the gas that goes mouldy in sampled point (1) into sampling thief (2);
Air-flow from sampled point (1) passes through sampling thief (2), and adsorbent (8) is to the Odor preference absorption of going mouldy in gas.After regular hour upon adsorption, well heater (10) is to adsorbent (8) heating, and the smell that goes mouldy being before adsorbed discharges, and with air-flow, inputs corresponding checkout equipment.
This stored grain smell distributed sample device that goes mouldy can also comprise the flow controller (4) of monitoring air flow rate, flow controller (4) is connected on main connecting pipe (6), be arranged on the front end of sampled point (1), flow controller (4) is arranged on grain out-pile.
This stored grain smell distributed sample device that goes mouldy can also comprise the filtrator (5) of the interference gas in filtering external environment, filtrator (5) is connected on main connecting pipe (6), be arranged on the front end of sampled point (1), filtrator (5) is arranged on outside grain depot.
Sampled point provided by the utility model (1) can adopt stainless steel, surface anodization aluminium.
Stainless steel screen pack and Gore-Tex cloth that the screen pack of sampled point provided by the utility model (1) can adopt order number to be greater than 100.
Container provided by the utility model (9) is a pipe, and adoptable material is glass, silicon and inert metal, stainless steel for example, the inner adsorbent (8) of filling.Optional adsorbent (8) comprises Tenax TA, Tenax GR, activated charcoal, Carbotrap C, Carbopack B, Carbopack X, Carboxen1000.Optional well heater (10) comprises resistance-type, infrared heating, semiconductor heat booster.
Utilize above-mentioned stored grain to go mouldy method that smell distributed sample device samples, comprises the steps:
Step 1: clean main connecting pipe (6) and sampling thief (2), the state of T-valve (7) is set, by all sampled points (1) and main connecting pipe (6) isolation, well heater (10) heats adsorbent (8), air pump (3) work, removes clean by main connecting pipe (6) and the inner remaining smell that goes mouldy of sampling thief (2);
Step 2: well heater (10) stops heating, air pump (3) works on, air-flow drops to room temperature by the temperature of adsorbent (8), the state of T-valve (7) is set, the sampled point of sampling (1) is communicated with main connecting pipe (6), air-flow is by sampled point (1), and the smell that goes mouldy that sampled point (1) is inner is brought into sampling thief (2), is adsorbed agent (8) absorption clean;
Step 3: the state of T-valve (7) is set, sampled point (1) and main connecting pipe (6) isolation, well heater (10) is to adsorbent (8) heating, and the smell that goes mouldy of absorption is before overflowed;
Step 4: by air pump (3) or additive method, other air pumps for example, pressure gas orders about the smell that goes mouldy of overflowing to leave sampling thief (2), inputs in corresponding detecting instrument.
The utility model has the advantage of: the mode with gas free diffusing obtains the smell that goes mouldy, by ambient atmos, flow and carry the smell that goes mouldy, dust pollution and line clogging that the negative pressure that produces of having avoided bleeding is brought; By distributed gas circuit, to the gas sampling of going mouldy of stored grain part, can realize each silo and utilize a gas sensor to detect online the situation of going mouldy of inner up to a hundred the check points of grain heap, greatly improve the efficiency and the cost that detect.
Accompanying drawing explanation
Fig. 1 is the go mouldy composition frame chart of smell distributed sample device of the utility model stored grain.
Fig. 2 is the structural representation of the gas sampling point (1) that goes mouldy.
Reference numeral: 1-sampled point, 2-sampling thief, 3-air pump, 4-flow controller, 5-filtrator, the main connecting pipe of 6-, 7-T-valve, 8-adsorbent, 9-container, 10-well heater
Embodiment
Referring to Fig. 1, a kind of stored grain smell distributed sample device that goes mouldy, comprises sampled point 1, sampling thief 2, air pump 3, flow controller 4, filtrator 5, main connecting pipe 6, T-valve 7, adsorbent 8, container 9, well heater 10.
Wherein, sampled point 1 is arranged on some positions, some height in grain heap, and other test point places of going mouldy; Sampling thief 2 is arranged on grain out-pile, for collecting the smell that goes mouldy; Air pump 3 is arranged on grain heap; Flow controller 4 is arranged on grain out-pile, for monitoring gas flow; Filtrator 5 is arranged on outside grain depot, and for the interference gas of filtering external environment, volatile organic contents such as water vapour, gasoline, avoids disturbing detecting to produce; Main connecting pipe 6 connects sampling thief 2, air pump 3, flow controller 4 and filtrator 5, and two ends of sampled point 1 are connected on main connecting pipe 6 by a T-valve 7 separately.
Sampling thief 2 is by adsorbent 8, container 9, and well heater 10 forms.Adsorbent 8 is Tenax TA, loading 200mg, and container 9 is internal diameter 4mm, external diameter 6mm, the glass tube of length 15cm.Well heater is the nichrome wire that is wrapped in outside of containers, and 100cm is long, diameter 0.22mm, and heating voltage is 24Vdc.The smell that goes mouldy in sampled point 1, by sampling thief 2, is adsorbed agent 8 absorption.Until air pump, bleed and continue after 2min, 10 pairs of sampling thiefs 14 of well heater are heated to 230 ℃, and the smell that goes mouldy being before adsorbed is overflowed.
Referring to Fig. 2, the gas sampling assembly 1 that goes mouldy is a hollow cylinder, and air inlet/outlet is located at respectively two bottom surfaces of cylinder.On cylinder side wall, be distributed with the aperture of 0.5mm diameter, cylinder inner side covers 10 layers of stainless steel screen pack, by argon fluorine Welding, is fixed.
The foregoing is only the preferred embodiment that the utility model is created; in order to limit the utility model, do not create; any modification of doing within all spirit of creating at the utility model and principle, be equal to and replace and improvement etc., within all should being included in the protection domain that the utility model creates.
Claims (6)
1. the stored grain smell distributed sample device that goes mouldy, is characterized in that: comprising:
Sampled point (1), is a hollow cylinder, is distributed with aperture on cylinder side wall, and cylinder side wall inner side is coated with screen pack, and sampled point (1) is arranged on needs the go mouldy place of gas of sampling;
Sampling thief (2), for collecting the smell that goes mouldy from sampled point (1), and discharge after collecting, flow to checkout equipment, described sampling thief (2) is comprised of adsorbent (8), container (9) and well heater (10) three parts, adsorbent (8) is filled in container (9), and well heater (10) is placed in outside container (9), and adsorbent (8) is heated;
Air pump (3), is placed in the air-flow end of sampling thief (2), the gas that extracting sampler discharges;
Sampling thief (2), air pump (3) are communicated with by main connecting pipe (6), and two ends of sampled point (1) are connected on main connecting pipe (6) by a T-valve (7) separately;
Sampled point (1) and T-valve (7) are arranged in grain heap, and sampling thief (2) is arranged on grain out-pile; Air pump (4) is arranged on grain out-pile.
2. the stored grain as claimed in claim 1 smell distributed sample device that goes mouldy, is characterized in that: the hole diameter on described cylinder side wall at 0.3mm between 0.7mm.
3. the stored grain as claimed in claim 1 smell distributed sample device that goes mouldy, it is characterized in that: this stored grain smell distributed sample device that goes mouldy can also comprise the flow controller (4) of monitoring air flow rate, flow controller (4) is connected on main connecting pipe (6), be arranged on the front end of sampled point (1), flow controller (4) is arranged on grain out-pile.
4. the stored grain as claimed in claim 1 smell distributed sample device that goes mouldy, it is characterized in that: this stored grain smell distributed sample device that goes mouldy can also comprise the filtrator (5) of the interference gas in filtering external environment, filtrator (5) is connected on main connecting pipe (6), be arranged on the front end of sampled point (1), filtrator (5) is arranged on outside grain depot.
5. the stored grain as claimed in claim 1 smell distributed sample device that goes mouldy, is characterized in that: the stainless steel screen pack that described screen pack adopts order number to be greater than 100.
6. the stored grain as claimed in claim 1 smell distributed sample device that goes mouldy, is characterized in that: described container (9) is a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320711859.4U CN203534871U (en) | 2013-11-12 | 2013-11-12 | Mildew smell distribution type sampling device for stored grains |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320711859.4U CN203534871U (en) | 2013-11-12 | 2013-11-12 | Mildew smell distribution type sampling device for stored grains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534871U true CN203534871U (en) | 2014-04-09 |
Family
ID=50421066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320711859.4U Expired - Lifetime CN203534871U (en) | 2013-11-12 | 2013-11-12 | Mildew smell distribution type sampling device for stored grains |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203534871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575572A (en) * | 2013-11-12 | 2014-02-12 | 中国电子科技集团公司第三十八研究所 | Distributed sampling device and method for mildew smell of stored food |
-
2013
- 2013-11-12 CN CN201320711859.4U patent/CN203534871U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575572A (en) * | 2013-11-12 | 2014-02-12 | 中国电子科技集团公司第三十八研究所 | Distributed sampling device and method for mildew smell of stored food |
| CN103575572B (en) * | 2013-11-12 | 2015-09-02 | 中国电子科技集团公司第三十八研究所 | Stored grain goes mouldy smell distributed sample method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103575572B (en) | Stored grain goes mouldy smell distributed sample method | |
| CN106814163B (en) | Device and method for testing formaldehyde and VOC (volatile organic compounds) in furniture and decoration materials by bag method | |
| CN106525999A (en) | Gas chromatographic detection method for gas | |
| CN102778368A (en) | Sampling method and collector for organic volatile matters in product/sample | |
| CN206974761U (en) | The sampling apparatus of burning and exhausting source VOCs measure | |
| CN102798555A (en) | Method for sampling organic volatile compound in product/sample and collector | |
| CN105784889B (en) | The quick analysis system and method for thick gas tar oil content | |
| CN202886148U (en) | Sampling collector of organic volatile matters in product/sample | |
| CN203534871U (en) | Mildew smell distribution type sampling device for stored grains | |
| CN202886149U (en) | Sampling collector of organic volatile compounds in product/sample | |
| CN110793821A (en) | Gaseous collection system of VOCs in ambient air | |
| CN206177909U (en) | Multi -functional air pocket washs, sampling device | |
| CN103760004B (en) | Solvent desorption device and method | |
| CN203422237U (en) | Sampling device for GC-MS (gas chromatography-mass spectrometer) headspace analysis | |
| CN104458999A (en) | Automatic organism analyzer | |
| CN206684134U (en) | A kind of detecting system for Food Monitoring early warning | |
| CN210572144U (en) | Real-time measurement all-in-one of quality of water volatility organic matter | |
| CN209821123U (en) | Shale oil gas on-site detection device | |
| CN204422362U (en) | A kind of many gas-detecting devices | |
| CN203798635U (en) | Rapid and vacuum desorption device for collecting volatile gas components in samples | |
| CN204286880U (en) | A kind of pollution source VOC sampler | |
| CN209459979U (en) | A kind of auto parts and components VOC automatic sampling apparatus | |
| CN109991320B (en) | Method for detecting release amount of expansion medium in cigarette smoke | |
| CN103792283A (en) | A simple device for detecting toxic gases in rooms | |
| CN206489028U (en) | One kind automation coal bed gas adsorption/desorption experimental apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: ANHUI BOWEI CHANGAN ELECTRONICS Co.,Ltd. Assignor: 38TH RESEARCH INSTITUTE, CHINA ELECTRONICS TECHNOLOGY Group Corp. Contract record no.: 2015340000154 Denomination of utility model: Distributed sampling device and method for mildew smell of stored food Granted publication date: 20140409 License type: Exclusive License Record date: 20151228 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |