CN104154871A - Diameter measuring method for mono-disperse micro-droplets - Google Patents
Diameter measuring method for mono-disperse micro-droplets Download PDFInfo
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- CN104154871A CN104154871A CN201410427201.XA CN201410427201A CN104154871A CN 104154871 A CN104154871 A CN 104154871A CN 201410427201 A CN201410427201 A CN 201410427201A CN 104154871 A CN104154871 A CN 104154871A
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Abstract
The invention relates to diameter measuring for droplets, in particular to a diameter measuring method for mono-disperse micro-droplets. A measuring device is involved in the measuring method and comprises a camera, a storage tank, a mono-disperse atomizer, a droplet collector and a graduated scale. The camera is arranged on one side under the mono-disperse atomizer, and the graduated scale is arranged on the other side under the mono-disperse atomizer. The graduated scale and the camera are opposite, the graduated scale is close to the droplets which are sprayed by the mono-disperse atomizer, and the dropping trail of the droplets is in parallel with the longitudinal direction of the graduated scale. An inlet in the top of the mono-disperse atomizer is connected with an outlet of the storage tank, the droplet collector is arranged under a nozzle of the mono-disperse atomizer, and organic solvents are injected inside the droplet collector and are incompatible with the droplets. When the camera shoots all the droplets, which are uniform in distance and even in particle size, sprayed by the mono-disperse atomizer, the droplet collector collects the droplets which suspend inside the organic solvents, then a microscope is used for observing and analyzing the droplets which suspend inside the organic solvents, and then the diameter of the droplets is measured. The measuring result is accurate and feasible.
Description
Technical field
The present invention relates to the measurement of liquid-drop diameter, especially relate to a kind of single micro-liquid-drop diameter measuring method of disperseing.
Background technology
At present, in size and the homogeneity of field to particle such as medicine, health products, functional food, higher requirement has been proposed.In order to meet the demand higher to dry products quality, people attempt improving existing spray drying device and explore new method and realize dry products is controlled more accurately.Single aerosol dispersion device can be good at controlling the liquid-drop diameter of drop, the product of acquisition uniform particle diameter.
Have no to query, the micro-drop that produces uniform particle diameter in spray-drying process is most critical one step that obtains high-quality grain products, and the diameter of Measurement accuracy ejection drop is also of crucial importance.This is because under the stable condition of hothouse drying condition; the size of micro-liquid-drop diameter is determining that can product be dried; the diameter of the micro-drop of Measurement accuracy is dried dry run for simulating spraying in addition, optimization drying condition provides data accurately, thereby saves particulate or the microcapsules of the energy, acquisition high-quality.
Chinese patent CN102879308A discloses a kind of for measuring the method for fine droplet diameter, and step is: collect with planar medium; Gather the image of drop at dielectric surface; Measure the contact angle of liquid at dielectric surface; The real area of the image that calculating drop forms on planar medium surface calculates the diameter of drop for owing to having added parameter contact angle, has considered the distortion of drop, so the numerical value of measuring is more accurate.Due to can batch capture and calculate the area of drop at dielectric surface, therefore can realize the calculating of size droplet diameter in batches.
Summary of the invention
The object of the present invention is to provide a kind of single micro-liquid-drop diameter measuring method of disperseing.
Concrete steps of the present invention:
1) measurement mechanism is set, measurement mechanism is provided with camera, storage tank, single aerosol dispersion device, drip collector and rule; Camera be located at single aerosol dispersion device under a side, rule be located at single aerosol dispersion device under opposite side, rule is relative with camera, rule is near the drop of single aerosol dispersion device ejection, the whereabouts track of drop and the parallel longitudinal of rule, the top inlet of single aerosol dispersion device connects the outlet of storage tank, and drip collector is located under the nozzle of single aerosol dispersion device, in drip collector, injects and the inconsistent organic solvent of drop;
2) when camera takes that each drop spacing of single aerosol dispersion device ejection is consistent, when the photo of uniform particle diameter, collect drop by drip collector, drop is suspended in organic solvent, then the drop being suspended in organic solvent is carried out to observation analysis with microscope, measures liquid-drop diameter.
In step 1) in, described and the inconsistent organic solvent of drop can adopt methyl-silicone oil, the micro-drop of density ratio of methyl-silicone oil is large, but methyl-silicone oil viscosity is large, drop can be suspended in methyl-silicone oil the inside and substantially keep stationary state, be conducive to like this observe with microscopic analysis, measure the diameter of micro-drop in methyl-silicone oil; Described camera can adopt the camera with micro-lens, and camera lens can adopt 52mm camera lens, adds a times mirror outward, camera shutter 1/200s, aperture 2.8; The minimum scale of described rule can be 0.1mm.
The present invention adopts " oil phase method " to disperse micro-drop to carry out diameter measurement to single, the principle of " oil phase method " be micro-drop collect rapidly with the inconsistent organic solvent of micro-drop in, and rapidly the droplet transfer of collecting is arrived to micro-Microscopic observation, measurement.
The micro-liquid-drop diameter producing due to single aerosol dispersion device is very little, and liquid-drop diameter is conventionally at 200～350 μ m.Because liquid-drop diameter is too little, general survey instrument is difficult to Measurement accuracy.
The invention has the beneficial effects as follows, can accurately record the diameter of the micro-drop of single aerosol dispersion device, its measurement result is accurately feasible.
Brief description of the drawings
Fig. 1 is the structure composition schematic diagram that list of the present invention disperses micro-liquid-drop diameter measurement mechanism embodiment.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Referring to Fig. 1, the micro-liquid-drop diameter measurement mechanism embodiment of single dispersion is provided with camera 1, storage tank 2, single aerosol dispersion device 3, drip collector 4 and rule 5; Described camera 1 be located at single aerosol dispersion device 3 under a side, described rule 5 be located at single aerosol dispersion device 3 under opposite side, rule 5 is relative with camera 1, the drop that rule 5 sprays near single aerosol dispersion device 3, the whereabouts track of drop and the parallel longitudinal of rule 5, the top inlet of single aerosol dispersion device 3 connects the outlet of storage tank 2, and drip collector 4 is located under the nozzle of single aerosol dispersion device 3.
Described camera 1 can adopt the camera with micro-lens, and camera lens can adopt 52mm camera lens, adds a times mirror outward, camera shutter 1/200s, aperture 2.8.
The minimum scale of described rule 5 can be 0.1mm.
The micro-liquid-drop diameter measuring method of described single dispersion is as follows:
1) measurement mechanism is set, measurement mechanism is provided with camera, storage tank, single aerosol dispersion device, drip collector and rule; Camera be located at single aerosol dispersion device under a side, rule be located at single aerosol dispersion device under opposite side, rule is relative with camera, rule is near the drop of single aerosol dispersion device ejection, the whereabouts track of drop and the parallel longitudinal of rule, the top inlet of single aerosol dispersion device connects the outlet of storage tank, and drip collector is located under the nozzle of single aerosol dispersion device, in drip collector, injects and the inconsistent organic solvent of drop; Described and the inconsistent organic solvent of drop can adopt methyl-silicone oil, the micro-drop of density ratio of methyl-silicone oil is large, but methyl-silicone oil viscosity is large, drop can be suspended in methyl-silicone oil the inside and substantially keep stationary state, be conducive to like this observe with microscopic analysis, measure the diameter of micro-drop in methyl-silicone oil; Described camera can adopt the camera with micro-lens, and camera lens can adopt 52mm camera lens, adds a times mirror outward, camera shutter 1/200s, aperture 2.8; The minimum scale of described rule can be 0.1mm.
2) when camera takes that each drop spacing of single aerosol dispersion device ejection is consistent, when the photo of uniform particle diameter, collect drop by drip collector, drop is suspended in organic solvent, use again microscope (not drawing in Fig. 1) to carry out observation analysis to the drop being suspended in organic solvent, measure liquid-drop diameter.
Claims (4)
1. the micro-liquid-drop diameter measuring method of single dispersion, is characterized in that its concrete steps are as follows:
1) measurement mechanism is set, measurement mechanism is provided with camera, storage tank, single aerosol dispersion device, drip collector and rule; Camera be located at single aerosol dispersion device under a side, rule be located at single aerosol dispersion device under opposite side, rule is relative with camera, rule is near the drop of single aerosol dispersion device ejection, the whereabouts track of drop and the parallel longitudinal of rule, the top inlet of single aerosol dispersion device connects the outlet of storage tank, and drip collector is located under the nozzle of single aerosol dispersion device, in drip collector, injects and the inconsistent organic solvent of drop;
2) when camera takes that each drop spacing of single aerosol dispersion device ejection is consistent, when the photo of uniform particle diameter, collect drop by drip collector, drop is suspended in organic solvent, then the drop being suspended in organic solvent is carried out to observation analysis with microscope, measures liquid-drop diameter.
2. a kind of list disperses micro-liquid-drop diameter measuring method as claimed in claim 1, it is characterized in that in step 1) in, the described and inconsistent organic solvent of drop is methyl-silicone oil.
3. a kind of list disperses micro-liquid-drop diameter measuring method as claimed in claim 1, it is characterized in that in step 1) in, the camera lens of described camera adopts 52mm, adds a times mirror outward, camera shutter 1/200s, aperture 2.8.
4. a kind of list disperses micro-liquid-drop diameter measuring method as claimed in claim 1, it is characterized in that in step 1) in, the minimum scale of described rule is 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427201.XA CN104154871A (en) | 2014-08-27 | 2014-08-27 | Diameter measuring method for mono-disperse micro-droplets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410427201.XA CN104154871A (en) | 2014-08-27 | 2014-08-27 | Diameter measuring method for mono-disperse micro-droplets |
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| Publication Number | Publication Date |
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| CN104154871A true CN104154871A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410427201.XA Pending CN104154871A (en) | 2014-08-27 | 2014-08-27 | Diameter measuring method for mono-disperse micro-droplets |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758320A (en) * | 2016-03-25 | 2016-07-13 | 中国水利水电科学研究院 | System and method for monitoring road wheel water drop atomization radius |
| CN108776100A (en) * | 2018-06-19 | 2018-11-09 | 西南科技大学城市学院 | A kind of material particles automatic measurement mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210361U (en) * | 1987-07-25 | 1988-06-08 | 北京大学 | Laser instrument for measuring dia. of liquid drop |
| JP2001337028A (en) * | 2000-05-30 | 2001-12-07 | Nikkiso Co Ltd | Method and apparatus for measuring particle size distribution |
| CN102636420A (en) * | 2012-04-27 | 2012-08-15 | 西安交通大学 | Device for measuring grain size of atomized droplet in large-size mist spray field |
| CN102879308A (en) * | 2012-09-17 | 2013-01-16 | 西北工业大学 | Method for measuring diameter of micro droplets |
| CN103728231A (en) * | 2014-01-15 | 2014-04-16 | 江苏中烟工业有限责任公司 | Detection method for particle sizes of atomized droplets of feed liquid |
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2014
- 2014-08-27 CN CN201410427201.XA patent/CN104154871A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87210361U (en) * | 1987-07-25 | 1988-06-08 | 北京大学 | Laser instrument for measuring dia. of liquid drop |
| JP2001337028A (en) * | 2000-05-30 | 2001-12-07 | Nikkiso Co Ltd | Method and apparatus for measuring particle size distribution |
| CN102636420A (en) * | 2012-04-27 | 2012-08-15 | 西安交通大学 | Device for measuring grain size of atomized droplet in large-size mist spray field |
| CN102879308A (en) * | 2012-09-17 | 2013-01-16 | 西北工业大学 | Method for measuring diameter of micro droplets |
| CN103728231A (en) * | 2014-01-15 | 2014-04-16 | 江苏中烟工业有限责任公司 | Detection method for particle sizes of atomized droplets of feed liquid |
Non-Patent Citations (2)
| Title |
|---|
| 恩瑞克.德利奥里等: "液滴直径测试", 《膜接触器原理、应用及发展前景》 * |
| 第11-14页: "均匀液滴的检测诊断方法的研究", 《全国激光科学技术青年技术交流会》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758320A (en) * | 2016-03-25 | 2016-07-13 | 中国水利水电科学研究院 | System and method for monitoring road wheel water drop atomization radius |
| CN105758320B (en) * | 2016-03-25 | 2018-11-20 | 中国水利水电科学研究院 | A kind of monitoring system and method for highway wheel droplet atomization radius |
| CN108776100A (en) * | 2018-06-19 | 2018-11-09 | 西南科技大学城市学院 | A kind of material particles automatic measurement mechanism |
| CN108776100B (en) * | 2018-06-19 | 2020-11-24 | 西南科技大学城市学院 | Automatic material particle measuring mechanism |
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