CN107991278B - Heating sample injection structure of trace explosive detector based on fluorescence quenching technology - Google Patents
Heating sample injection structure of trace explosive detector based on fluorescence quenching technology Download PDFInfo
- Publication number
- CN107991278B CN107991278B CN201711453432.8A CN201711453432A CN107991278B CN 107991278 B CN107991278 B CN 107991278B CN 201711453432 A CN201711453432 A CN 201711453432A CN 107991278 B CN107991278 B CN 107991278B
- Authority
- CN
- China
- Prior art keywords
- heating
- sample injection
- consumable
- injection structure
- channel
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 63
- 238000002347 injection Methods 0.000 title claims abstract description 52
- 239000007924 injection Substances 0.000 title claims abstract description 52
- 239000002360 explosive Substances 0.000 title claims abstract description 31
- 238000010791 quenching Methods 0.000 title claims abstract description 17
- 230000000171 quenching effect Effects 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6432—Quenching
Landscapes
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Molecular Biology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a heating sample injection structure of a trace explosive detector based on fluorescence quenching technology, which comprises a sample injection structure, a heating structure and consumable materials, wherein the heating structure is movably sleeved on the outer wall of the sample injection structure; the consumable is movably inserted into the heating structure; a three-hole annular channel is arranged in the sample injection structure in a penetrating way, and a diversion convergence structure is arranged at the bottom of the three-hole annular channel; a concave table for matching with consumable insertion is arranged at the bottom of the sample injection structure; a screw thread fastening structure is arranged between the sample injection structure and the heating structure; the middle position of the consumable is communicated with a consumable channel, and the consumable channel is staggered with the three-hole annular channel. The heating sample injection structure is simple and efficient to install, clean and maintain, the collection area of explosive molecules is increased, and the collection efficiency of the explosive molecules is greatly improved; the risk that ambient light is directly injected into a consumable channel is eliminated; the quenching efficiency of explosive molecules to consumable materials is improved, and the detection limit of detection is indirectly improved.
Description
Technical Field
The invention relates to a heating sample injection structure, in particular to a heating sample injection structure of a trace explosive detector based on fluorescence quenching technology.
Background
The existing heating sample injection structure has some defects: 1) The aperture of the sample injection is smaller, so that the number of collectable explosive molecules is small; 2) There is a risk of optical light leakage; 3) The cleaning and maintenance are difficult; 4) The air path buffer structure is absent. Therefore, there is a need for an improved heating injection structure to address the above-mentioned shortcomings.
Disclosure of Invention
In order to solve the technical problems, the invention provides a heating sample injection structure of a trace explosive detector based on a fluorescence quenching technology, which solves the defects of the existing heating sample injection structure.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the heating sample injection structure based on the fluorescence quenching technology trace explosive detector comprises a sample injection structure, a heating structure and consumable materials, wherein the heating structure is movably sleeved on the outer wall of the sample injection structure; the consumable is movably inserted into the heating structure; a three-hole annular channel is arranged in the sample injection structure in a penetrating way, and a diversion convergence structure is arranged at the bottom of the three-hole annular channel; the bottom of advance kind structure is provided with the concave station that is used for cooperating the consumptive material male.
Preferably, a screw fastening structure is arranged between the sample feeding structure and the heating structure.
Preferably, a circle of sealing O-shaped ring is arranged on the inner wall of the bottom of the concave table.
Preferably, a heating plate for heating is arranged at the bottom of the heating structure.
Preferably, the consumable is movably inserted into the middle of the heating structure from below and inserted into the recess through the sealing "O" ring.
Preferably, the middle position of the consumable is communicated with a consumable channel, and the consumable channel is staggered with the three-hole annular channel and is not on the same vertical line.
Preferably, the sample feeding structure is movably screwed into the middle position of the heating structure from above through the screw fastening structure.
In the heating process, the heating plate works to heat the heating structure, heat is transferred to the sample injection structure through the screw fastening structure, so that the three-hole annular channel is heated, and the three-hole annular channel enters a normal working state. In the sample injection process, the evaporated explosive gas enters the sample injection structure through the three-hole annular channel, and is buffered at the diversion converging structure, and the gas is converged into the consumable channel for detection.
The invention has the beneficial effects that: the heating sample injection structure of the trace explosive detector based on the fluorescence quenching technology adopts a design that three-hole annular channels are uniformly distributed in the sample injection structure, so that the collection area of explosive molecules is increased, and the collection efficiency of the explosive molecules is greatly improved; the three-hole annular channel and the consumable channel of the sample injection structure are designed in a staggered structure, so that the risk that ambient light is directly injected into the consumable channel through the three-hole annular channel of the sample injection structure is eliminated; the bottom of the sample injection structure adopts a diversion converging structure to form an airflow buffer channel, so that quenching efficiency of explosive molecules on consumable materials is improved, and detection limit of detection is indirectly improved; the heating structure and the sample injection structure adopt a separated design, so that the installation, cleaning and maintenance are simpler and more efficient.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic diagram of a sample injection structure according to the present invention;
FIG. 4 is a schematic diagram of a bottom view of the sample injection structure of the present invention;
Wherein: 1. the device comprises a sample injection structure, a three-hole annular channel 11, a flow guiding convergence structure, a heating structure, a consumable material 3, a consumable material channel 31, a threaded fastening structure 4, a heating plate 5 and a sealing O-shaped ring 6.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in FIG. 1, the heating sample injection structure of the trace explosive detector based on fluorescence quenching technology comprises a sample injection structure 1, a heating structure 2 and a consumable 3, wherein the heating structure 2 is movably sleeved on the outer wall of the sample injection structure 1; the consumable 3 is movably inserted into the heating structure 2; as shown in fig. 3 and 4, a three-hole annular channel 11 is arranged in the sample injection structure 1 in a penetrating manner, and a diversion convergence structure 12 is arranged at the bottom of the three-hole annular channel 11; the bottom of the sample introduction structure 1 is provided with a concave table 13 for being matched with the insertion of the consumable 3.
As shown in fig. 2, a screw fastening structure 4 is disposed between the sample feeding structure 1 and the heating structure 2.
The inner wall of the bottom of the concave table 13 is provided with a circle of sealing O-shaped ring 6.
The bottom of the heating structure 2 is provided with a heating plate 5 for heating.
The consumable 3 is movably inserted into the middle position of the heating structure 2 from below and inserted into the concave table 13 through the sealing O-shaped ring 6.
The middle position of the consumable 3 is communicated with a consumable channel 31, and the consumable channel 31 is staggered with the three-hole annular channel 11 and is not on the same vertical line, so that the light path of the ambient light entering the consumable channel 31 is cut off, and the influence of the ambient light on detection is isolated.
The sample feeding structure 1 is movably screwed into the middle position of the heating structure 2 from above through the screw fastening structure 4. The sample feeding structure 1 can be conveniently detached from the heating structure 2 through the screw fastening structure 4, so that the cleaning and maintenance are convenient.
The working process of the heating sample injection structure of the trace explosive detector based on the fluorescence quenching technology comprises a heating process and a sample injection process, and the specific working process is as follows:
In the heating process, the heating plate 5 at the bottom of the heating structure 2 works and heats the heating structure 2, and the heating structure 2 transmits heat to the sample injection structure 1 through the screw fastening structure 4, so that the three-hole annular channel 11 in the sample injection structure 1 is also heated and enters a normal working state.
In the sample injection process, after the three-hole annular channel 11 is heated and enters a working state, evaporated explosive gas enters the sample injection structure 1 through the three-hole annular channel 11, and the explosive gas is buffered at the diversion convergence structure 12 at the bottom of the three-hole annular channel 11 and converged into the consumable channel 31 in the consumable 3 for detection. In the process, the evaporated explosive gas passes through the three-hole annular channel 11, so that the utilization rate of the evaporated explosive gas is greatly improved; explosive steam is buffered at the diversion convergence structure 12 and then converged into the consumable channel 31 in the consumable 3, so that the flow speed of the explosive steam is reduced, the quenching efficiency of the explosive steam to the consumable is improved, and the detection limit of detection is indirectly improved.
The heating sample injection structure increases the collection area of explosive molecules and greatly improves the collection efficiency of the explosive molecules; the risk that ambient light is directly injected into a consumable channel is eliminated; quenching efficiency of explosive molecules on consumable materials is improved, and detection limit of detection is indirectly improved; and make installation, washing, maintenance more simple and efficient.
Claims (4)
1. The heating sample injection structure of the trace explosive detector based on the fluorescence quenching technology is characterized by comprising a sample injection structure (1), a heating structure (2) and consumable materials (3), wherein the heating structure (2) is movably sleeved on the outer wall of the sample injection structure (1); the consumable (3) is movably inserted into the heating structure (2); a three-hole annular channel (11) is arranged in the sample injection structure (1) in a penetrating way, and a diversion convergence structure (12) is arranged at the bottom of the three-hole annular channel (11); a concave table (13) for being matched with the insertion of the consumable (3) is arranged at the bottom of the sample feeding structure (1);
a screw thread fastening structure (4) is arranged between the sample injection structure (1) and the heating structure (2);
the consumable (3) is movably inserted into the middle position of the heating structure (2) from below and is inserted into the concave table (13) through the sealing O-shaped ring (6);
The middle position of the consumable (3) is communicated with a consumable channel (31), and the consumable channel (31) is staggered with the three-hole annular channel (11) and is not on the same vertical line.
2. The heating sample injection structure of the trace explosive detector based on the fluorescence quenching technology according to claim 1, wherein a circle of sealing O-shaped ring (6) is arranged on the inner wall of the bottom of the concave table (13).
3. The heating sample injection structure of the trace explosive detector based on the fluorescence quenching technology according to claim 1, wherein a heating plate (5) for heating is arranged at the bottom of the heating structure (2).
4. The heating sample injection structure of the trace explosive detector based on the fluorescence quenching technology according to claim 1, wherein the sample injection structure (1) is movably screwed into the middle position of the heating structure (2) from above through a screw fastening structure (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453432.8A CN107991278B (en) | 2017-12-28 | 2017-12-28 | Heating sample injection structure of trace explosive detector based on fluorescence quenching technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453432.8A CN107991278B (en) | 2017-12-28 | 2017-12-28 | Heating sample injection structure of trace explosive detector based on fluorescence quenching technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107991278A CN107991278A (en) | 2018-05-04 |
| CN107991278B true CN107991278B (en) | 2024-04-26 |
Family
ID=62043041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711453432.8A Active CN107991278B (en) | 2017-12-28 | 2017-12-28 | Heating sample injection structure of trace explosive detector based on fluorescence quenching technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107991278B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5055690A (en) * | 1989-02-10 | 1991-10-08 | Gas Research Institute | Method of eliminating water vapor interference in detecting gases |
| AU5397901A (en) * | 1996-03-19 | 2001-09-06 | University Of Utah Research Foundation | System for determining analyte concentration |
| CN2821565Y (en) * | 2005-06-19 | 2006-09-27 | 中国海洋大学 | Single cell algae flow type analysis microflow control chip |
| KR100862684B1 (en) * | 2008-02-19 | 2008-10-10 | (주)화인 | Apparatus for trapping by-product gas in semiconductor producing line |
| CN102220226A (en) * | 2011-05-23 | 2011-10-19 | 北京工业大学 | Two-path temperature control polymerase chain reactor and real-time detection device |
| CN102564805A (en) * | 2010-12-31 | 2012-07-11 | 同方威视技术股份有限公司 | Sampling device for trace detecting instrument and trace detecting instrument with same |
| CN202599841U (en) * | 2012-05-18 | 2012-12-12 | 北京锐光仪器有限公司 | Sampling device of atomic fluorescence instrument |
| CN103472117A (en) * | 2012-07-23 | 2013-12-25 | 西安工业大学 | Nano-molecular imprinting piezoelectric transducer based portable explosive trace detector |
| CN104483423A (en) * | 2014-12-31 | 2015-04-01 | 同方威视技术股份有限公司 | Sample collection and thermal analysis sampling device and method as well as trace detection device |
| DE202016102767U1 (en) * | 2016-05-24 | 2016-06-16 | Bundesrepublik Deutschland, Vertreten Durch Den Bundesminister Für Wirtschaft Und Energie, Dieser Vertreten Durch Den Präsidenten Der Bundesanstalt Für Materialforschung Und -Prüfung (Bam) | Portable device for measuring volatile chemicals |
| WO2016124083A1 (en) * | 2015-02-06 | 2016-08-11 | 余家昌 | Superminiature multi-channel real-time fluorescence spectrometer |
| CN205679529U (en) * | 2016-06-03 | 2016-11-09 | 湖南华南光电科技股份有限公司 | A kind of portable trace explosive survey meter |
| CN205749018U (en) * | 2016-05-19 | 2016-11-30 | 赵翊洪 | A kind of oil field automatic sampling device |
| CN206292080U (en) * | 2017-01-03 | 2017-06-30 | 公安部第一研究所 | A kind of Thermal desorption injector for ionic migration spectrometer |
| CN206683905U (en) * | 2017-03-20 | 2017-11-28 | 广州禾信仪器股份有限公司 | Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system |
| CN207964635U (en) * | 2017-12-28 | 2018-10-12 | 湖南华南光电科技股份有限公司 | Heating sampling structure based on fluorescent quenching technology trace explosive detector |
| CN109085147A (en) * | 2018-09-27 | 2018-12-25 | 湖南华南光电科技股份有限公司 | Propulsion analytic structure based on fluorescence sense technology trace explosive detector |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4569030B2 (en) * | 2001-04-23 | 2010-10-27 | 東ソー株式会社 | Fluorescence detection method and apparatus capable of measurement under external light |
| US20030023181A1 (en) * | 2001-07-26 | 2003-01-30 | Mault James R. | Gas analyzer of the fluorescent-film type particularly useful for respiratory analysis |
| US9508536B2 (en) * | 2006-04-18 | 2016-11-29 | Excellims Corporation | Chemical sampling and detection methods and apparatus |
| KR20150097764A (en) * | 2012-12-21 | 2015-08-26 | 마이크로닉스 인코포레이티드. | Portable fluorescence detection system and microassay cartridge |
| CN104749389B (en) * | 2013-12-30 | 2017-07-14 | 同方威视技术股份有限公司 | Universal injector, gas chromatograph and combination spectrometer |
| CN104569309A (en) * | 2014-12-29 | 2015-04-29 | 同方威视技术股份有限公司 | Rotating sample feeding device |
-
2017
- 2017-12-28 CN CN201711453432.8A patent/CN107991278B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5055690A (en) * | 1989-02-10 | 1991-10-08 | Gas Research Institute | Method of eliminating water vapor interference in detecting gases |
| AU5397901A (en) * | 1996-03-19 | 2001-09-06 | University Of Utah Research Foundation | System for determining analyte concentration |
| CN2821565Y (en) * | 2005-06-19 | 2006-09-27 | 中国海洋大学 | Single cell algae flow type analysis microflow control chip |
| KR100862684B1 (en) * | 2008-02-19 | 2008-10-10 | (주)화인 | Apparatus for trapping by-product gas in semiconductor producing line |
| CN102564805A (en) * | 2010-12-31 | 2012-07-11 | 同方威视技术股份有限公司 | Sampling device for trace detecting instrument and trace detecting instrument with same |
| CN102220226A (en) * | 2011-05-23 | 2011-10-19 | 北京工业大学 | Two-path temperature control polymerase chain reactor and real-time detection device |
| CN202599841U (en) * | 2012-05-18 | 2012-12-12 | 北京锐光仪器有限公司 | Sampling device of atomic fluorescence instrument |
| CN103472117A (en) * | 2012-07-23 | 2013-12-25 | 西安工业大学 | Nano-molecular imprinting piezoelectric transducer based portable explosive trace detector |
| CN104483423A (en) * | 2014-12-31 | 2015-04-01 | 同方威视技术股份有限公司 | Sample collection and thermal analysis sampling device and method as well as trace detection device |
| WO2016124083A1 (en) * | 2015-02-06 | 2016-08-11 | 余家昌 | Superminiature multi-channel real-time fluorescence spectrometer |
| CN205749018U (en) * | 2016-05-19 | 2016-11-30 | 赵翊洪 | A kind of oil field automatic sampling device |
| DE202016102767U1 (en) * | 2016-05-24 | 2016-06-16 | Bundesrepublik Deutschland, Vertreten Durch Den Bundesminister Für Wirtschaft Und Energie, Dieser Vertreten Durch Den Präsidenten Der Bundesanstalt Für Materialforschung Und -Prüfung (Bam) | Portable device for measuring volatile chemicals |
| CN205679529U (en) * | 2016-06-03 | 2016-11-09 | 湖南华南光电科技股份有限公司 | A kind of portable trace explosive survey meter |
| CN206292080U (en) * | 2017-01-03 | 2017-06-30 | 公安部第一研究所 | A kind of Thermal desorption injector for ionic migration spectrometer |
| CN206683905U (en) * | 2017-03-20 | 2017-11-28 | 广州禾信仪器股份有限公司 | Atmospheric volatile organic compounds twin-stage deep cooling on-line preconcentration concentrates sampling system |
| CN207964635U (en) * | 2017-12-28 | 2018-10-12 | 湖南华南光电科技股份有限公司 | Heating sampling structure based on fluorescent quenching technology trace explosive detector |
| CN109085147A (en) * | 2018-09-27 | 2018-12-25 | 湖南华南光电科技股份有限公司 | Propulsion analytic structure based on fluorescence sense technology trace explosive detector |
Non-Patent Citations (6)
| Title |
|---|
| Environmental immunoassay for the explosive RDX using a fluorescent dye-labeled antigen and the continuous-flow immunosensor;Bart, JC 等;《SENSORS AND ACTUATORS B-CHEMICAL》;19970430;第39卷(第1-3期);第411-418页 * |
| TNT基熔铸炸药冷却过程温度场变化规律研究;郭朋林 等;《含能材料》;第18卷(第01期);第93-96页 * |
| 冷原子荧光测汞仪最佳测试参数的选定和常见故障的排除;解敏丽 等;《山东环境》;19951225(第06期);第30-31页 * |
| 基于荧光聚合物传感技术的爆炸物探测;李纬 等;《中国安全防范技术与应用》;20210630(第3期);第14-20页 * |
| 小型SPR分析系统设计及其在环境污染检测中的应用研究;陈惠滨;《中国博士学位论文全文数据库 信息科技辑》;20120715(第7期);第I140-102页 * |
| 王宇成.《最新色谱分析检测方法及应用技术实用手册 第二卷》.银声音像出版社,2004,第2卷第620-623页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107991278A (en) | 2018-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201648571U (en) | Slow cooling device of spinning machine | |
| CN203241285U (en) | Full automatic pressure blowing concentrator | |
| CN107991278B (en) | Heating sample injection structure of trace explosive detector based on fluorescence quenching technology | |
| CN204523129U (en) | A kind of reducing mechanism with water circulation cooling | |
| CN208751021U (en) | A kind of emission reduction type electric gas heater | |
| CN203591601U (en) | Pipe-type falling film evaporator | |
| CN203297929U (en) | Gas inlet and outlet device of gas chamber | |
| CN202786556U (en) | Air supplement structure of blue-and-white disk bale plucker | |
| CN204134245U (en) | A kind of flash distillation device | |
| CN202125934U (en) | Hydrocone type simple steaming device | |
| CN204599281U (en) | Edible mushroom drying case | |
| CN202357324U (en) | Cooling device of tubular thin-layer production facility | |
| CN201073599Y (en) | Cracking silica tube | |
| CN205209818U (en) | A well accuse sampling device for methyl triethoxysilane is synthetic | |
| CN207172602U (en) | A kind of injection machine nozzle | |
| CN202793894U (en) | Condensing tube for azotometer | |
| CN205368250U (en) | Furnace roof pressure control device | |
| CN205152134U (en) | Jar is discharged to spheripol polypropylene process systems's low pressure | |
| CN104019655A (en) | Mechanical sealing double-tapered vacuum drying machine | |
| CN203227463U (en) | Heated air circulating heating sugar-coated raw material stirrer with air pressure detection | |
| CN202823834U (en) | Hot plate for horizontal energy saving lamp | |
| CN202213225U (en) | Punch assembly with injection-rod cooling inner pipe | |
| CN218529864U (en) | Soxhlet extraction instrument extraction circulation system and Soxhlet extraction instrument | |
| CN210953516U (en) | Energy-saving automatic smoke and dust tester | |
| CN207741446U (en) | A kind of low smell homogenizing drying chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |