CN210223244U

CN210223244U - Intermolecular interaction force demonstration instrument

Info

Publication number: CN210223244U
Application number: CN201921076787.4U
Authority: CN
Inventors: Limin Wei; 魏丽敏
Original assignee: Xian Aeronautical University
Current assignee: Xian Aeronautical University
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-03-31
Anticipated expiration: 2029-07-10

Abstract

The utility model discloses an intermolecular interaction force demonstration instrument, which comprises a base, a support column, a spring connecting block, a spring, an electromagnet, a circuit switch and a storage battery, wherein the support column is welded with the bottom of the spring connecting block; the left end and the right end of the spring connecting block are respectively welded with a spring; one ends of the two springs, which are far away from the spring connecting block, are welded with a placing box, and electromagnets are placed in the placing box; the two electromagnets are connected in parallel with the circuit switch and the storage battery through the support column and the internal conducting wires of the base. The utility model discloses a visual replacement molecule of table tennis, through the interactive force between spring and electro-magnet simulation molecule, specifically do: the attraction force when the electromagnet is started can simulate the intermolecular attraction force, the elasticity of the spring can simulate the intermolecular repulsion force after the electromagnet is closed, and the whole process is convenient to operate and easy to understand; the anti-falling baffle on the supporting sliding plate can prevent the electromagnet from accidentally falling off, and the base and the supporting column can also ensure that the whole demonstration process is stably carried out.

Description

Intermolecular interaction force demonstration instrument

Technical Field

The utility model relates to a demonstration instrument field specifically is an intermolecular interaction force demonstration appearance.

Background

Intermolecular forces (van der waals forces) are three sources of interaction between the permanent dipole moments of ① polar molecules ② one polar molecule polarizes the other molecule, inducing a dipole moment and attracting each other ③ the movement of electrons in the molecule creates a transient dipole moment which transiently polarizes adjacent molecules which in turn enhances the transient dipole moment of the original molecule, this mutual coupling creates a net attraction, these three forces contributing differently, usually the third one contributing most.

In the middle school teaching, the explanation case about the intermolecular interaction force on the textbook is too hard, so that a beginner can hardly visually know the secret contained in the knowledge, and a teaching aid-intermolecular interaction force demonstration instrument is generated to improve the learning efficiency. However, the functions of the current intermolecular interaction force demonstration instrument in the market are not perfect, for example, although the intermolecular interaction force demonstration instrument proposed in the patent with the publication number of CN208834583U can basically simulate the intermolecular interaction force, the spring needs to be pulled or compressed manually in the simulation process, the spring may hurt the operator in the process of generating elastic deformation, and the spring is manually compressed or stretched to shield a part of the structure, thereby affecting the demonstration effect to a certain extent. Therefore, it is necessary to design and develop a demonstration instrument which is convenient to operate, safe and reliable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an intermolecular interaction force demonstration appearance to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an intermolecular interaction force demonstration instrument comprising: the bottom surface of the supporting column is welded on the base, and the top surface of the supporting column is welded with the bottom of the spring connecting block; the spring connecting block is a cuboid, and the left end and the right end of the spring connecting block are respectively welded with a spring; one ends of the two springs, which are far away from the spring connecting block, are welded with a placing box, and electromagnets are placed in the placing box; the circuit switch and the storage battery are fixed on the top surface of the base through bolts, and the two electromagnets are connected with the circuit switch and the storage battery in parallel through the support columns and the internal conducting wires of the base.

As a further aspect of the present invention: and supporting sliding plates are welded on two sides of the spring connecting block, and the electromagnets are placed on the supporting sliding plates.

As a further aspect of the present invention: and one ends of the two supporting sliding plates, which are far away from the spring connecting block, are provided with anti-falling baffles.

As a further aspect of the present invention: and a table tennis ball is bonded on one side of the electromagnet, which is far away from the spring connecting block.

As a further aspect of the present invention: the iron core of the electromagnet is silicon steel.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a visual replacement molecule of table tennis, through the interactive force between spring and electro-magnet simulation molecule, specifically do: the attraction force when the electromagnet is started can simulate the intermolecular attraction force, the elasticity of the spring can simulate the intermolecular repulsion force after the electromagnet is closed, and the whole process is convenient to operate and easy to understand; in addition, the anti-falling baffle on the supporting sliding plate can prevent the electromagnet from accidentally falling off, and the base and the supporting column can also ensure that the whole demonstration process is stably carried out.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic circuit diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, in an embodiment of the present invention, an intermolecular interaction force demonstration apparatus includes: the device comprises a base 1, a support column 2, a spring connecting block 3, a spring 4, an electromagnet 5, a circuit switch 8 and a storage battery 9, wherein the bottom surface of the support column 2 is welded on the base 1, and the top surface of the support column is welded with the bottom of the spring connecting block 3; the spring connecting block 3 is a cuboid, and the left end and the right end of the spring connecting block are respectively welded with a spring 4; one ends of the two springs 4, which are far away from the spring connecting block 3, are welded with a placing box 51, and electromagnets 5 are placed in the placing box 51; the circuit switch 8 and the storage battery 9 are fixed on the top surface of the base 1 through bolts, and the two electromagnets 5 are connected in parallel with the circuit switch 8 and the storage battery 9 through the support column 2 and the internal conducting wires of the base 1. The utility model discloses an interaction force between

spring

4 and 5 simulation molecules of electro-magnet specifically is: the attraction force when the electromagnet 5 is started can simulate the intermolecular attraction force, and the elastic force of the spring 4 after the electromagnet 5 is closed can simulate the intermolecular repulsion force. In the whole operation process, the spring 4 does not need to be touched manually, and the simulation function can be realized only by controlling the on-off of the electromagnet 5 through the circuit switch 8.

The both sides of spring connecting block 3 all weld and have supported slide 7, electro-magnet 5 is placed on supporting slide 7, two one ends that support slide 7 and keep away from spring connecting block 3 are provided with anti-falling baffle 71, and at the in-process of spring 4 demonstration intermolecular repulsion, electro-magnet 5 probably breaks away from supporting slide 7 under the effect of spring 4 elasticity, and anti-falling baffle 71 plays the guard action, can avoid electro-magnet 5 and table tennis 6 to drop. The side of the electromagnet 5 far away from the spring connecting block 3 is bonded with a table tennis ball 6, and the table tennis ball 6 can replace molecules, so that the table tennis ball is high in quality, low in price and vivid. The iron core of the electromagnet 5 is made of silicon steel, and in order to enable the electromagnet 5 to be demagnetized immediately after power failure, the electromagnet is made of steel materials with fast demagnetization, such as silicon steel. The electromagnet 5 has magnetism when being electrified, and the magnetism disappears after the electromagnet is powered off, so that the demonstration effect is better.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An intermolecular interaction force demonstration instrument comprising: base (1), support column (2), spring connecting block (3), spring (4), electro-magnet (5), circuit switch (8) and battery (9), its characterized in that: the bottom surface of the support column (2) is welded on the base (1), and the top surface of the support column is welded with the bottom of the spring connecting block (3); the spring connecting block (3) is a cuboid, and the left end and the right end of the spring connecting block are respectively welded with a spring (4); a placing box (51) is welded at one end, far away from the spring connecting block (3), of the spring (4), and an electromagnet (5) is placed in the placing box (51); the circuit switch (8) and the storage battery (9) are fixed on the top surface of the base (1) through bolts, and the two electromagnets (5) are connected with the circuit switch (8) and the storage battery (9) in parallel through the support columns (2) and the inner conducting wires of the base (1).

2. An intermolecular interaction force demonstrator according to claim 1, wherein: support sliding plates (7) are welded on two sides of the spring connecting block (3), and the electromagnets (5) are placed on the support sliding plates (7).

3. An intermolecular interaction force demonstrator according to claim 2, wherein: and one end of the support sliding plate (7) far away from the spring connecting block (3) is provided with an anti-falling baffle (71).

4. An intermolecular interaction force demonstrator according to claim 1, wherein: and a table tennis ball (6) is bonded on one side of the electromagnet (5) far away from the spring connecting block (3).

5. An intermolecular interaction force demonstrator according to claim 4, wherein: and the iron core of the electromagnet (5) is silicon steel.