CN203552550U - Ultrasonic spraying device used for Millikan oil drop experiment - Google Patents
Ultrasonic spraying device used for Millikan oil drop experiment Download PDFInfo
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- CN203552550U CN203552550U CN201320642123.6U CN201320642123U CN203552550U CN 203552550 U CN203552550 U CN 203552550U CN 201320642123 U CN201320642123 U CN 201320642123U CN 203552550 U CN203552550 U CN 203552550U
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Abstract
The utility model provides an ultrasonic spraying device used for a Millikan oil drop experiment comprising a sealing container. The container is provided with an oil injecting hole. An ultrasonic atomization head is disposed in the container, and is connected with an oscillator. One end of an oil mist conduit is provided with an opening, and is disposed in the sealing container, and the other end of the oil mist conduit is provided with a solenoid valve, and is disposed in an oil mist chamber. An ultraviolet lamp is disposed in the oil mist chamber. By injecting a moderate amount of experimental oil in the container, the proper oscillation frequency and the proper oscillation amplitude of the oscillator can be achieved after the adjustment, the proper solenoid valve starting time can be achieved after the adjustment, and the proper ultraviolet lamp intensity can be achieved after the adjustment. The oscillator can be started, and then the ultrasonic atomization head can be used to convert the oil in the container into the mist droplets, which can be overflowed from the opening of the oil mist conduit, and can enter the oil droplet chamber through the small hole in the opening of the oil droplet box after being irradiated by the ultraviolet ray. The ultrasonic spraying device is advantageous in that the sizes and the electrified capacities of the mist droplets can be controlled accurately, the oil injection process can be controlled automatically, the use is simple and convenient, the oil injection amount can be controlled, and the small hole of the opening of the oil droplet box cannot be blocked easily.
Description
Technical field
The utility model relates to a kind of Experiment of College Physics device, specifically relates to a kind of spraying plant that is applied to Millikan oil-drop experiment.
Background technology
Early in the twentieth century, along with electric power widespread use and the further investigation of people to structure of matter electrical property technically, in the urgent need to electric essence is made to correct explanation.U.S. physicist Millikan spends the time of 7 years, has done the oil-drop experiment of several thousand times, has delivered oil-drop experiment result in 1910.It has proved the quantum of electric charge, and all electric weight are all the integral multiples of elementary charge e, and have accurately measured the charge value of electronics, e=(1.602 ± 0.002) × 10
-19c.Millikan oil-drop experiment is not only significant to the development of Modern Physics, simultaneously for modern age electronic theory foundation experiment basis is provided.Therefore Millikan has won the Nobel Prize in physics of nineteen twenty-three degree.Millikan oil-drop experiment principle is clear, designs ingeniously, and equipment is simple, and result accurately and reliably.While doing this experiment, need to conscientiously select oil droplet, patient Tracking and Measurment, needs rigorous scientism especially, strict experimental implementation, and data processing accurately, can play good exercise effect to student.Therefore, Millikan oil-drop experiment just becomes a common experimental project in Experiment of College Physics.At present, the fueling injection equipment that in Experiment of College Physics, Millikan oil-drop experiment is used is all generally a glass atomization shower nozzle, connects a rubber pneumatic bag, by extruding gasbag, air-flow is sprayed fast from shower nozzle, by oil atomization.This fueling injection equipment mainly has the following disadvantages:
One, oil spout skill is difficult for grasping, and often occurs the phenomenon that oil spout effect is bad during student experimenting.
Its two, during student experimenting easy oil spout too much, stop up oil droplet box inlet aperture.
Its three, glass atomization shower nozzle is easily broken.
Its four, oil spout is entirely with personal experience, size and the carried charge of oil droplet are wayward.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the utility model proposes a kind of ultrasonic spray apparatus, this device is easy to use, and can accurately control size and the carried charge of ejection oil droplet.
The utility model solves the technical scheme that its technical matters adopts: adopt an airtight container, container is provided with oil hole, be used for to oil for injection experiments in container, in container, near bottom, be provided with ultrasonic atomizatio head, be ultrasound piezoelectric ceramic transducer, be used for the oil of the experiment in container to carry out atomization.Ultrasonic atomizatio head is connected with oscillator, and the oscillation frequency of oscillator and amplitude can regulate.Mist of oil conduit one end is opened in airtight container, the other end is placed in oil mist chamber, end is horn-like opening, be positioned at directly over oil droplet box inlet aperture, at mist of oil catheter tip, approach horn-like opening part solenoid valve is set, the solenoid valve opening time can regulate, and shows by time display screen, is used for controlling mist of oil and overflows the time.UV-lamp is set in oil mist chamber, by ultraviolet ray, irradiates mist of oil, can change the carried charge of oil droplet.UV-lamp intensity can regulate, and shows by UV-lamp intensity display screen.By oil hole, in airtight container, inject appropriate experiment with oily, oscillation frequency and the amplitude adjusted of oscillator are suitable, it is suitable that the solenoid valve opening time regulates, UV-lamp intensity adjustment is suitable, open oscillator, ultrasonic atomizatio head, be that the electric oscillation signal that ultrasound piezoelectric ceramic transducer produces oscillator is converted to mechanical vibration, transmitting ultrasound wave, thereby the experiment in container is excited into vaporific oil droplet with oil, treat to be full of mist of oil in mist of oil conduit, opens solenoid valve, vaporific oil droplet overflows from the horn-like opening of mist of oil catheter tip, through ultraviolet ray, irradiate, the vaporific oil droplet that carried charge is suitable enters oil droplet chamber through oil droplet box inlet aperture.
The beneficial effects of the utility model are that this device can be controlled size and the carried charge of vaporific oil droplet more exactly, automatically controls injection process, easy to use, can control distributive value, is difficult for stopping up oil droplet box inlet aperture.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Accompanying drawing is structural representation of the present utility model.
1. ultrasonic atomizatio heads in figure, 2. oil hole, 3. mist of oil conduit, 4. solenoid valve, 5. oil mist chamber, 6. UV-lamp, 7. oil droplet box inlet aperture, 8. the interface of UV-lamp and controller, 9. solenoid valve interface, 10. the interface of ultrasonic atomizatio head and oscillator, 11. oscillator frequency adjusting knobs, 12. oscillator frequency display screens, 13. oscillator switch buttons, 14. oscillator amplitude display screens, 15. oscillator amplitude adjusting knobs, 16. electromagnetic valve switch buttons, 17. time display screens, 18. solenoid valve opening time adjusting knobs, 19. UV-lamp switch keys, 20. UV-lamp intensity display screens, 21. UV-lamp intensity adjustment knobs, 22. device for control ultra violet lamps, 23. solenoid valve controllers, 24. oscillators, 25. airtight containers.
Embodiment
In figure, adopt an airtight container 25, container is provided with oil hole 2, is used for, to oil for injection experiments in container, in container, near bottom, being provided with ultrasonic atomizatio head 1, i.e. ultrasound piezoelectric ceramic transducer, is used for the oil of the experiment in container to carry out atomization.Ultrasonic atomizatio head 1 is connected with oscillator 24 with the interface 10 of oscillator by ultrasonic atomizatio head, and the oscillation frequency of oscillator 24 can regulate by oscillator frequency adjusting knob 11, and shows by oscillator frequency display screen 12; The amplitude of oscillator 24 can regulate by oscillator amplitude adjusting knob 15, and shows by oscillator amplitude display screen 14.Mist of oil conduit 3 one end are opened in airtight container 25, the other end is placed in oil mist chamber 5, and end is horn-like opening, is positioned at directly over oil droplet box inlet aperture 7, at mist of oil conduit 3 ends, approach horn-like opening part solenoid valve 4 is set, solenoid valve 4 is used for controlling mist of oil and overflows the time.Solenoid valve 4 is connected with solenoid valve controller 23 by solenoid valve interface 9, and the opening time of solenoid valve 4 can regulate by solenoid valve opening time adjusting knob 18, and shows by time display screen 17.UV-lamp 6 is set in oil mist chamber 5, by ultraviolet ray, irradiates mist of oil, can change the carried charge of oil droplet.The intensity of UV-lamp 6 can regulate by UV-lamp intensity adjustment knob 21, and shows by UV-lamp intensity display screen 20.
Specific experiment operation steps is:
(1) by oil hole 2, to the interior injection of airtight container 25, test in right amount with oil, close oil hole 2.
(2) by oscillator frequency adjusting knob 11, regulate, it is suitable that the oscillation frequency of oscillator 24 is regulated, and regulates, by suitable the amplitude adjusted of oscillator 24 by oscillator amplitude adjusting knob 15.
(3) by solenoid valve opening time adjusting knob 18, regulate, make 4 opening times of solenoid valve suitable.
(4) by UV-lamp intensity adjustment knob 21, regulate, by suitable UV-lamp intensity adjustment.
(5) open oscillator switch button 13, treat to be full of mist of oil in mist of oil conduit 3.
(6) opens solenoid valve switch key 16, vaporific oil droplet overflows from the horn-like opening of mist of oil conduit 3 end, through ultraviolet ray, irradiates, and the vaporific oil droplet that carried charge is suitable enters oil droplet chamber through oil droplet box inlet aperture 7.
Above structure of the present utility model is set forth, but the not conditional intention of the embodiment that the utility model is introduced, and not deviating from the scope of the utility model purport, the utility model can have multiple variation and modification.
Claims (4)
1. one kind is applied to the ultrasonic spray apparatus of Millikan oil-drop experiment, comprise an airtight container, container is provided with oil hole, be used for to oil for injection experiments in container, in container, near bottom, be provided with ultrasonic atomizatio head, it is ultrasound piezoelectric ceramic transducer, be used for the oil of the experiment in container to carry out atomization, mist of oil conduit one end is opened in airtight container, the other end is placed in oil mist chamber, it is characterized in that: ultrasonic atomizatio head is connected with oscillator, the oscillation frequency of oscillator and amplitude can regulate.
2. the ultrasonic spray apparatus that is applied to Millikan oil-drop experiment according to claim 1, is characterized in that: mist of oil catheter tip is horn-like opening, is positioned at directly over oil droplet box inlet aperture.
3. the ultrasonic spray apparatus that is applied to Millikan oil-drop experiment according to claim 1, it is characterized in that: at mist of oil catheter tip, approach horn-like opening part solenoid valve is set, the solenoid valve opening time can regulate, and shows by time display screen, is used for controlling mist of oil and overflows the time.
4. the ultrasonic spray apparatus that is applied to Millikan oil-drop experiment according to claim 1, it is characterized in that: UV-lamp is set in oil mist chamber, by ultraviolet ray, irradiate mist of oil, can change the carried charge of oil droplet, UV-lamp intensity can regulate, and shows by UV-lamp intensity display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642123.6U CN203552550U (en) | 2013-10-18 | 2013-10-18 | Ultrasonic spraying device used for Millikan oil drop experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642123.6U CN203552550U (en) | 2013-10-18 | 2013-10-18 | Ultrasonic spraying device used for Millikan oil drop experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203552550U true CN203552550U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320642123.6U Expired - Fee Related CN203552550U (en) | 2013-10-18 | 2013-10-18 | Ultrasonic spraying device used for Millikan oil drop experiment |
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| CN (1) | CN203552550U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023743A (en) * | 2016-07-11 | 2016-10-12 | 重庆理工大学 | Standing wave demonstrator |
| CN106023744A (en) * | 2016-07-11 | 2016-10-12 | 重庆理工大学 | Standing wave demonstration method |
| CN107991208A (en) * | 2015-12-08 | 2018-05-04 | 四川大学 | The method for reducing barometric surveying Millikan oil drop balanced voltage |
-
2013
- 2013-10-18 CN CN201320642123.6U patent/CN203552550U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991208A (en) * | 2015-12-08 | 2018-05-04 | 四川大学 | The method for reducing barometric surveying Millikan oil drop balanced voltage |
| CN107991208B (en) * | 2015-12-08 | 2020-06-19 | 四川大学 | Method for reducing equilibrium voltage of Millikan oil drops measured by air pressure |
| CN106023743A (en) * | 2016-07-11 | 2016-10-12 | 重庆理工大学 | Standing wave demonstrator |
| CN106023744A (en) * | 2016-07-11 | 2016-10-12 | 重庆理工大学 | Standing wave demonstration method |
| CN106023743B (en) * | 2016-07-11 | 2018-12-28 | 重庆理工大学 | A kind of standing wave demonstrating instrument |
| CN106023744B (en) * | 2016-07-11 | 2019-01-08 | 重庆理工大学 | standing wave demonstration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20141018 |
|
| EXPY | Termination of patent right or utility model |