CN210627616U - Device for demonstrating medium required for sound transmission - Google Patents
Device for demonstrating medium required for sound transmission Download PDFInfo
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- CN210627616U CN210627616U CN201920913956.9U CN201920913956U CN210627616U CN 210627616 U CN210627616 U CN 210627616U CN 201920913956 U CN201920913956 U CN 201920913956U CN 210627616 U CN210627616 U CN 210627616U
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- bottle
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- exhaust pipe
- ground
- control lamp
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Abstract
The utility model aims to solve the technical problem that a device that needs the medium is propagated to the demonstration sound that has simply provided, convenient operation, application "will listen to and see" this design idea is provided. The device is including ground mouthful bottle, bottle plug, and the upper surface of bottle plug is provided with the through-hole, is provided with the blast pipe in the through-hole, is provided with the air vent valve on the blast pipe, and the lower surface of bottle plug is provided with the peg, and the lower extreme of peg is provided with the couple, and it has the sound control lamp to hang on the couple. The device is when using, earlier place in ground mouthful bottle from the sound control lamp of taking the power, then carry out the acoustic control experiment, and the observation result, later with bottle air pumping dry, close the air valve and experiment, see the state of sound control lamp, the volume of the air in the rethread ventilation valve control system bottle, relapse repetitious operation draws the experiment conclusion. The operation is convenient and the device is suitable for being popularized in the field of primary school scientific teaching experimental equipment.
Description
Technical Field
The utility model belongs to the technical field of the scientific teaching experiment equipment of primary school and specifically relates to a demonstrate device that sound propagation needs medium.
Background
Sound is transmitted in the form of waves, which vibrate an object when they hit the object, and it needs to be transmitted through a medium to be heard. The speed at which an acoustic wave propagates in a medium is called the speed of sound. The sound transmission process cannot be observed, so that the conclusion that the 'medium is required for air transmission' is needed to be known in teaching, and experimental phenomena are observed through experiments, and the phenomena are compared with the phenomena in the presence or absence of the medium. It can be concluded that "medium is required for air propagation".
At present, the conclusion that the 'medium is needed for air propagation' is verified by adopting the traditional 'bell jar experiment' to arrange the electric bell into the glass cover, the air in the bell jar is exhausted by adopting the air extractor, and students can listen to the change of the sound of the electric bell under the condition of air extraction and air non-extraction, so that the air is needed for the air propagation as the medium. The main problem of adopting this device is 1. the glass bell jar has certain syllable-dividing effect, put into the electric bell wherein, in addition the effect of air extractor, the sound size through listening the electric bell draws the conclusion, the effect is not ideal, through the contrast bleed with not bleed the size of sound, because the syllable-dividing effect of glass cover, the sound that leads to hearing is very little, the change of sound around hardly distinguishing, 2. sealing area is very little between glass cover and the base, be difficult to accomplish fine gas tightness, make originally just unobvious experimental phenomenon become more unobvious. Because the traditional 'bell jar experiment' has the problems of unobvious experimental phenomenon, poor effect, poor operability, poor demonstration performance and the like, the existing device for demonstrating the propagation of sound needs a medium and is correspondingly improved, but the operation is more troublesome, and the traditional 'bell jar experiment' is not beneficial to classroom teaching.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a device that needs the medium is propagated to the demonstration sound that has simply provided, convenient operation, application "will listen to and see" this design idea is provided.
The utility model provides a technical scheme that its technical problem adopted does: the device for demonstrating the medium needed by sound transmission comprises a ground bottle, wherein a bottle plug for sealing a bottle opening is arranged at the bottle opening of the ground bottle and matched with the bottle opening of the ground bottle, a through hole is formed in the upper surface of the bottle plug, the central axis of the through hole is perpendicular to the upper surface of the bottle plug and completely penetrates through the bottle plug, the diameter of the through hole is smaller than that of the bottle plug, an exhaust pipe is arranged in the through hole, the lower end of the exhaust pipe extends into the through hole, the upper end of the exhaust pipe extends out of the through hole and is provided with a detachable joint connected with an air pump, the outer diameter of the exhaust pipe is in sealing connection with the through hole, a vent valve is arranged on the exhaust pipe and is positioned above the bottle plug, a hanging rod is arranged on the lower surface of the bottle plug, and the upper end of the hanging rod is, the lower extreme of peg is provided with the couple, there is the clearance between the upper end of peg and the through-hole, hang the sound control lamp of taking the power certainly on the couple, the sound control lamp hangs on the couple through the rope, couple and sound control lamp all are located the ground bottle, sound control lamp and ground bottle bottom, inside wall all have the clearance.
Further, the central axis of the through hole is coincident with the central axis of the bottle stopper.
Further, the rope is a rubber band.
Further, when the bottle stopper seals the ground bottle, the distance from the sound control lamp to the bottom of the ground bottle is half of the height of the ground bottle.
Further, the exhaust pipe is a transparent hard plastic pipe.
The utility model has the advantages that: when the device for demonstrating the medium needed by sound transmission is used, the sound control lamp with a power supply is placed in a ground bottle, the lower surface of a bottle plug is provided with a hanging rod, the upper end of the hanging rod is vertically fixed on the lower surface of the bottle plug, the lower end of the hanging rod is provided with a hook, the bottle plug can be hooked on the hook through a rope and then covered, then a sound control experiment is carried out, the upper end of an exhaust pipe is connected with an air extractor, furthermore, the upper surface of the bottle plug is provided with a through hole, the central axis of the through hole is vertical to the upper surface of the bottle plug, the through hole completely penetrates through the bottle plug, the diameter of the through hole is smaller than that of the bottle plug, the exhaust pipe is arranged in the through hole, the lower end of the exhaust pipe extends into the through hole, the upper end of the exhaust pipe extends out of the through hole, and the upper end, the air in the bottle is pumped out through the detachable joint and the air pump, then the vent valve arranged on the exhaust pipe is closed, the experiment is carried out, the state of the sound control lamp is seen, the amount of the air in the bottle is controlled through the vent valve, and the experiment conclusion is obtained through repeated operation. The device for demonstrating the sound transmission required medium places the sound generation outside, so that students can participate, the basic idea under the new course standard is embodied, the learning interest of the students can be conveniently excited, and the learning efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a device for demonstrating media required for sound propagation according to the present invention;
FIG. 2 is a schematic view of the combined structure of the bottle stopper, the exhaust pipe, the hanging rod, the sound-controlled lamp and other parts of the present invention;
the notation in the figure is: ground bottle 1, bottle plug 2, blast pipe 3, vent valve 4, peg 5, couple 6, sound control lamp 7, rope 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the device for demonstrating the medium needed by sound transmission comprises a ground bottle 1, a bottle stopper 2 for sealing a bottle opening is arranged at the bottle opening of the ground bottle 1, the bottle stopper 2 is matched with the bottle opening of the ground bottle 1, a through hole is arranged on the upper surface of the bottle stopper 2, the central axis of the through hole is perpendicular to the upper surface of the bottle stopper 2, the through hole completely penetrates through the bottle stopper 2, the diameter of the through hole is smaller than that of the bottle stopper 2, an exhaust pipe 3 is arranged in the through hole, the lower end of the exhaust pipe 3 extends into the through hole, a detachable joint connected with an air pump is arranged at the upper end of the exhaust pipe 3, the outer diameter of the exhaust pipe 3 is hermetically connected with the through hole, a vent valve 4 is arranged on the exhaust pipe 3, the vent valve 4 is positioned above the bottle stopper 2, and a hanging rod 5 is arranged on the lower surface of, the upper end vertical fixation of peg 5 is at the lower surface of bottle plug 2, the lower extreme of peg 5 is provided with couple 6, there is the clearance between the upper end of peg 5 and the through-hole, hang the sound control lamp 7 from the electrified source on couple 6, sound control lamp 7 hangs on couple 6 through rope 8, couple 6 and sound control lamp 7 all are located ground mouthful bottle 1, sound control lamp 7 all has the clearance with ground mouthful bottle 1's bottle end, inside wall. When the device for demonstrating media needed by sound propagation is used, a sound control lamp 7 with a power supply is placed in a ground bottle 1, the lower surface of a bottle stopper 2 is provided with a hanging rod 5, the upper end of the hanging rod 5 is vertically fixed on the lower surface of the bottle stopper 2, the lower end of the hanging rod 5 is provided with a hook 6, the sound control lamp can be hooked on the hook 6 through a rope 8 and then covered with the bottle stopper 2, then a sound control experiment is carried out, the result is observed, the upper end of an exhaust pipe 3 is connected with an air pump, furthermore, the upper surface of the bottle stopper 2 is provided with a through hole, the central axis of the through hole is vertical to the upper surface of the bottle stopper 2, the through hole completely penetrates through the bottle stopper 2, the diameter of the through hole is smaller than that of the bottle stopper 2, the exhaust pipe 3 is arranged in the through hole, the lower end of the exhaust pipe 3 extends into the through hole, the upper end of the exhaust pipe 3 extends out of the, link to each other with the air extractor through detachable joint and take out the air in the bottle futilely, then close the vent valve 4 that sets up on the blast pipe 3, experiment, see the state of sound control lamp 7, the volume of the air in the rethread vent valve 4 control bottle, relapse repetitious operation draws the experiment conclusion. The device for demonstrating the sound transmission required medium places the sound generation outside, so that students can participate, the basic idea under the new course standard is embodied, the learning interest of the students can be conveniently excited, and the learning efficiency is improved.
From the viewpoint of beauty and practicality, the central axis of the through hole coincides with the central axis of the bottle stopper 2.
The rubber band has certain elasticity, so that the sound waves can be effectively relieved from being transmitted to the sound control lamp 7 from the bottle stopper 2 along the hanging rod 5 and the rubber band, and therefore the rope 8 is the rubber band.
In order to ensure the accuracy of the experiment, when the bottle stopper 2 seals the ground bottle 1, the distance from the sound control lamp 7 to the bottom of the ground bottle 1 is half of the height of the ground bottle 1.
The exhaust pipe 3 is various, and preferably, the exhaust pipe 3 is a transparent hard plastic pipe.
Claims (4)
1. The utility model provides a demonstration sound transmission needs device of medium, includes ground mouthful bottle (1), the bottleneck department of ground mouthful bottle (1) is provided with bottle plug (2) sealed with the bottleneck, bottle plug (2) and the bottleneck phase-match of ground mouthful bottle (1), its characterized in that: the upper surface of the bottle stopper (2) is provided with a through hole, the central axis of the through hole is perpendicular to the upper surface of the bottle stopper (2), the through hole completely penetrates through the bottle stopper (2), the diameter of the through hole is smaller than that of the bottle stopper (2), an exhaust pipe (3) is arranged in the through hole, the lower end of the exhaust pipe (3) extends into the through hole, the upper end of the exhaust pipe (3) extends out of the through hole and the upper end of the exhaust pipe (3) is provided with a detachable joint connected with an air pump, the outer diameter of the exhaust pipe (3) is in sealing connection with the through hole, a vent valve (4) is arranged on the exhaust pipe (3), the vent valve (4) is positioned above the bottle stopper (2), the lower surface of the bottle stopper (2) is provided with a hanging rod (5), the upper end of the hanging rod (5) is vertically fixed on the lower surface of the bottle stopper (2), there is the clearance between the upper end of peg (5) and the through-hole, hang on couple (6) and have from the acoustic control lamp (7) of taking the power, acoustic control lamp (7) hang on couple (6) through rope (8), couple (6) and acoustic control lamp (7) all are located ground mouthful bottle (1), acoustic control lamp (7) all have the clearance with the bottle bottom, the inside wall of ground mouthful bottle (1), rope (8) are the rubber band.
2. An apparatus for demonstrating a medium required for sound propagation as claimed in claim 1, wherein: the central axis of the through hole is coincided with the central axis of the bottle stopper (2).
3. An apparatus for demonstrating a medium required for sound propagation as claimed in claim 2, wherein: when the ground bottle (1) is sealed by the bottle stopper (2), the distance from the sound control lamp (7) to the bottom of the ground bottle (1) is half of the height of the ground bottle (1).
4. A device for demonstrating a medium required for sound propagation according to claim 3, wherein: the exhaust pipe (3) is a transparent hard plastic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920913956.9U CN210627616U (en) | 2019-06-17 | 2019-06-17 | Device for demonstrating medium required for sound transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920913956.9U CN210627616U (en) | 2019-06-17 | 2019-06-17 | Device for demonstrating medium required for sound transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210627616U true CN210627616U (en) | 2020-05-26 |
Family
ID=70765981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920913956.9U Expired - Fee Related CN210627616U (en) | 2019-06-17 | 2019-06-17 | Device for demonstrating medium required for sound transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210627616U (en) |
-
2019
- 2019-06-17 CN CN201920913956.9U patent/CN210627616U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 Termination date: 20210617 |
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| CF01 | Termination of patent right due to non-payment of annual fee |