CN217181703U

CN217181703U - Magnetic Bernoulli effect demonstrator

Info

Publication number: CN217181703U
Application number: CN202220287064.4U
Authority: CN
Inventors: 杨广武; 陆小翠
Original assignee: Tianjin Fast Bird Education Technology Co ltd; Tianjin Sino German University of Applied Sciences
Current assignee: Yingruide Tianjin Optoelectronic Technology Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-08-12
Anticipated expiration: 2032-02-14

Abstract

The utility model relates to an experiment teaching aid technical field, especially a formula bernoulli effect demonstration appearance is inhaled to magnetism, including backplate, transparent front panel, foraminiferous magnet, air cavity bottom plate, air cavity roof, velocity of flow measuring device, fan, baroceptor and water pipe, support with air cavity roof and air cavity bottom plate between backplate and the transparent front panel, form the air cavity that can hold the both ends that the air flows narrow, the width is thick in the middle between the four, the fan is equipped with respectively in the both ends of air cavity and the centre, velocity of flow measuring device and baroceptor, the velocity of flow and atmospheric pressure value that record show through the digital display table that corresponds show, two U type water pipes of lower part installation of air cavity, water pipe head is equipped with respectively at the both ends of U type water pipe, two external U type water pipes, are equipped with foraminiferous magnet behind the backplate, and a whole instrument is inhaled on the blackboard. The utility model discloses can inhale on the blackboard, the teachers and students in the whole class of being convenient for watch simultaneously.

Description

Magnetic Bernoulli effect demonstrator

Technical Field

The utility model relates to an experiment teaching aid technical field, especially a formula bernoulli effect demonstration appearance is inhaled to magnetism.

Background

Bernoulli effect 1726, bernoulli through countless experiments, found "boundary layer surface effect": as the fluid speed increases, the pressure at the interface where the object is in contact with the fluid decreases, and vice versa the pressure increases. This finding, which is a contribution of this scientist commemorative, is called the "bernoulli effect".

Chinese patent discloses a bernoulli effect demonstrator, application number: 201720165708.1, including three-way pipe and fine rule, the three-way pipe comprises intake pipe, outlet duct and gas blow pipe connection, intake pipe and outlet duct are on the collinear, the gas blow pipe becomes to be greater than 90 contained angles with the outlet duct each other, wear to be equipped with the fine rule in intake pipe, the outlet duct, the fine rule passes intake pipe, outlet duct back knot becomes the coil. The patent is not easy for students because the patent can not be fixed on the blackboard, and experimental data can not be observed without a display device.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an effectual problem among the above-mentioned background of solution provides a formula bernoulli effect demonstration appearance is inhaled to magnetism.

The specific technical scheme is as follows;

the utility model provides a formula Bernoulli's effect demonstration appearance is inhaled to magnetism, includes backplate, transparent front panel, foraminiferous magnet, air cavity bottom plate, air cavity roof, velocity of flow measuring device, fan, baroceptor and water pipe, support with air cavity roof and air cavity bottom plate between backplate and the transparent front panel, form an air cavity that can hold the air flow that both ends are thin narrow, the middle width is thick between the four, fan, velocity of flow measuring device and baroceptor are equipped with respectively in the both ends of air cavity and the centre, and velocity of flow and the atmospheric pressure value that record are shown through the digital display table that corresponds, and two U type water pipes are installed to the lower part of air cavity, and water pipe head is equipped with respectively at the both ends of U type water pipe, external two U type water pipes, is equipped with foraminiferous magnet behind the backplate, and whole instrument is inhaled on the blackboard.

Preferably, the measuring and displaying circuit is powered by a rechargeable battery and is controlled by a main switch, and a charging port is reserved outside.

Preferably, the bottom of the back plate and the transparent front panel are provided with brackets.

Preferably, the digital display meter is mounted on the upper part of the transparent front panel.

Compared with the prior art, the beneficial effects of the utility model are that: 1. can be arranged in a portable box and is convenient to carry.

2. Can be sucked on the blackboard, and is convenient for teachers and students in the whole class to watch simultaneously.

3. The sensor and the large-screen digital display electric meter are used, so that teachers and students in the whole class can watch experimental data conveniently.

4. The color water is added into the two sections of water pipes, so that the change of the pressure intensity can be visually seen.

5. The electric meter is powered by a rechargeable battery, and an external power supply is not needed.

6. The water pipe and the bracket are detachable, and the volume is reduced.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a side view of the present invention;

in the figure: 1. a back plate; 2. a transparent front panel; 3. a magnet with a hole; 4. an air cavity bottom plate; 5. a gas cavity top plate; 6. a flow rate measuring device; 7. a fan; 8. a photogate; 9. an air pressure sensor; 10. the left end displays the flow meter; 11. the left end displays a flow velocity barometer; 12. a flow meter is digitally displayed in the middle; 13. the middle digital display flow velocity and air pressure meter; 14. a rechargeable battery; 15. a master switch; 16. a battery charging aperture; 17. a water pipe joint; 18, a U-shaped water pipe; 19. a support; 20. the right end of the flow meter is digitally displayed; 21. the right end is provided with a digital display flow velocity and pressure meter.

Detailed Description

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

The following detailed description of the preferred embodiments of the present invention is provided in connection with the accompanying drawings. As shown in fig. 1-2, a magnetic-attraction bernoulli effect demonstrator includes a back plate 1, a transparent front panel 2, a magnet with holes 3, an air cavity bottom plate 4, an air cavity top plate 5, a flow rate measuring device 6, a fan 7, an air pressure sensor 9 and a water pipe 18. The back plate and the front plate are supported by an upper air cavity top plate and an air cavity bottom plate, an air cavity with two narrow ends and a wide middle part is formed between the back plate and the front plate, the air cavity can accommodate air flow, fans, flow rate measuring devices and air pressure sensors are respectively arranged at the two ends and the middle part of the air cavity, a photoelectric door 8 is arranged at the lower part of each fan, and the measured flow rate and air pressure values are displayed by a left-end digital display flow rate meter 10, a left-end digital display flow rate air pressure meter 11, a middle digital display flow rate meter 12, a middle digital display flow rate air pressure meter 13, a right-end digital display flow rate meter 20 and a right-end digital display flow rate air pressure meter 21.

The measuring and display circuit is powered by a rechargeable battery 14, controlled by a master switch 15, and externally provided with a charging port 16. The two ends (one each) and the middle (two) of the lower part of the air cavity are respectively provided with a water pipe joint 17 which can be externally connected with two U-shaped water pipes 18. The magnet with holes is arranged behind the backboard, and the whole set of device can be attracted on the blackboard. The bracket 19 is arranged, and can be installed for use when the desk is required to be placed on a desk.

The using method comprises the following steps:

1. is absorbed on a blackboard or stands on a table;

2. turning on a power supply switch of the electric meter;

3. blowing air into the air cavity from any end by using a blower, observing the display of the pressure and the flow rate of each section and the height of the liquid level in the water pipe, and verifying the Bernoulli effect;

4. after the experiment, the finishing instrument is put into a suitcase.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a formula bernoulli effect demonstrates appearance is inhaled to magnetism which characterized in that: the portable electronic blackboard comprises a backboard, a transparent front panel, a magnet with holes, an air cavity bottom plate, an air cavity top plate, a flow velocity measuring device, a fan, an air pressure sensor and water pipes, wherein the backboard and the transparent front panel are supported by the air cavity top plate and the air cavity bottom plate, an air cavity which can accommodate air flow and is narrow at two ends and wide and thick in the middle is formed between the backboard and the transparent front panel, the fan, the flow velocity measuring device and the air pressure sensor are respectively arranged at two ends and in the middle of the air cavity, the measured flow velocity and air pressure values are displayed through corresponding digital display meters, two U-shaped water pipes are arranged at the lower part of the air cavity, water pipe connectors are respectively arranged at two ends of each U-shaped water pipe, the two U-shaped water pipes are externally connected, the magnet with holes is arranged behind the backboard, and the whole set of instrument is sucked on a blackboard.

2. The magnetic Bernoulli effect demonstrator according to claim 1, wherein the measuring and displaying circuit is powered by a rechargeable battery, controlled by a master switch, and a charging port is provided on the outside.

3. The magnetically-attractable bernoulli effect demonstrator of claim 1, wherein said back plate and the bottom of said transparent front plate are mounted with brackets.

4. The magnetically-attractable bernoulli effect demonstration apparatus according to claim 1 wherein the digital display is mounted on an upper portion of the transparent front panel.