CN202067437U

CN202067437U - Heating demagnetize demonstrator

Info

Publication number: CN202067437U
Application number: CN2011200987960U
Authority: CN
Inventors: 许广胜; 许珊珊
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-07
Filing date: 2011-04-07
Publication date: 2011-12-07
Anticipated expiration: 2021-04-07

Abstract

At present, various kinds of college physics teaching materials and the training materials for young workers in relative job categories mention the heating demagnetize phenomenon. Since no applicative laboratory apparatus is available, and the students lack of the perceptual knowledge about the heating demagnetize phenomenon in daily life, teachers can only instruct orally on the part, thus the teaching effect is affected. The utility model provides a heating demagnetize demonstrator which can be used in classes at any moment, and mainly aims to fill the blank of the laboratory apparatus. The heating demagnetize demonstrator comprises an n-shaped base on which an L-shaped bracket is arranged; a spring is hung on the L-shaped bracket; a rectangular permanent magnet which is lower than the Curie point is hung on the lower end of the spring; a L-shaped armature sheet opposite to the permanent magnet is arranged on the base below the permanent magnet; and besides, a heating utensil is further comprised.

Description

Add the thermal demagnetization demonstration device

Technical field

The utility model relates to instruments used for education, and particularly a kind of magnet adds the demonstration device of thermal demagnetization phenomenon.

Background technology

At present, in all kinds of colleges physics teaching material and in the relevant work post young worker training materials, all mention magnet and add the thermal demagnetization phenomenon.The teacher can only not give an oral account owing to there is the experimental apparatus that is suitable for when this partial content of professor, and magnet adds the perceptual knowledge that the life of the thermal demagnetization phenomenology does not have daily life in addition, thereby teaching efficiency is affected.

The utility model content

The purpose of this utility model is exactly to overcome the blank that reality is tested instrument, provide a kind of can be on the classroom ready-to-use magnet add the demonstration device of thermal demagnetization phenomenon.

For achieving the above object, the utility model provides a kind of thermal demagnetization demonstration device that adds.

The utility model provides adds the thermal demagnetization demonstration device, comprises on " ∏ " type base, and " L " type support is installed, and hangs a spring on it, and the spring lower end hangs the permanent magnet of a rectangle low curie point; It is relative with permanent magnet on the base of permanent magnet below " L " type armature iron plate to be installed again.

The utility model provides adds the thermal demagnetization demonstration device, also comprises a cooking-vessel.

The utility model adds the thermal demagnetization demonstration device, and wherein said " ∏ " type base can be used metal materials such as stainless steel, aluminium, copper, iron, also nonmetallic materials such as available engineering plastics.

The utility model adds the thermal demagnetization demonstration device, and wherein said " L " type support adopts metal materials such as stainless steel, aluminium, copper.

The utility model adds the thermal demagnetization demonstration device, and wherein said spring is the steel cylindroid helical-coil extension spring, external diameter 4.0～6.0mm, steel wire diameter 0.40～0.60mm, two buckle.

The utility model adds the thermal demagnetization demonstration device, and wherein said permanent magnet is the ferrite permanent magnet of low curie point, and Curie point is 80～110 ℃, generally can select 103 ± 2 ℃ ferrite permanent magnet for use.

The utility model adds the thermal demagnetization demonstration device, and wherein said " L " type armature iron plate is a pure iron.

The utility model adds the thermal demagnetization demonstration device, and wherein said cooking-vessel is a circular thin-wall metal box, adopts metal materials such as stainless steel, copper, and its lateral surface affixed adopts the metal bar of same material as handle.

The utility model adds thermal demagnetization demonstration device advantage and good effect is:

1, simple being suitable for, phenomenon is directly perceived.

2, volume is small and exquisite, easy to carry, and that can demonstrate magnet at any time on the classroom adds the thermal demagnetization phenomenon.

The utility model adds the thermal demagnetization demonstration device have been satisfied teachers and students demonstrated the demand that adds the thermal demagnetization phenomenon in teaching process.

Be elaborated with reference to accompanying drawing below in conjunction with embodiment.

Description of drawings

Fig. 1 is the front elevation that the utility model adds the thermal demagnetization demonstration device.

Fig. 2 is that the utility model adds thermal demagnetization demonstration device cooking-vessel vertical view.

Fig. 3 is that the utility model adds thermal demagnetization demonstration device cooking-vessel elevational cross-sectional view.

Embodiment

Describe the embodiment that the utility model adds the thermal demagnetization demonstration device in detail below in conjunction with accompanying drawing.

With reference to Fig. 1, the utility model provides adds the thermal demagnetization demonstration device, comprises " ∏ " type base 1, and base 1 can be used metal materials such as stainless steel, aluminium, copper, iron, also metal material such as available non-engineering plastics." L " type support 2 is installed on the base 1, and " L " type support 2 adopts metal materials such as stainless steel, aluminium, copper.Hang a spring 3 on " L " type support 2, spring 3 is the steel cylindroid helical-coil extension spring, external diameter 4.0～6.0mm, steel wire diameter 0.40～0.60mm, two buckle; Spring 3 lower ends hang the permanent magnet 4 of a rectangle low curie point; The Curie point of permanent magnet 4 is 80～110 ℃, generally can select 103 ± 2 ℃ ferrite permanent magnet for use.

It is relative with permanent magnet 4 that " L " type armature iron plate 5 is installed again on the base 1 of permanent magnet 4 belows.

The utility model provides adds the thermal demagnetization demonstration device, also comprises a cooking-vessel.With reference to Fig. 2～3, cooking-vessel is a circular thin-wall metal box 6, adopts metal materials such as stainless steel, copper, and circular thin-wall metal box 6 lateral surfaces affixed adopt the metal bar 7 of same material as handle.

Illustrate that below in conjunction with accompanying drawing the utility model adds the use of thermal demagnetization demonstration device.

Earlier permanent magnet 4 is left behind during use and " L " type armature iron plate 5 is pulled together; Showing to the student then, permanent magnet 4 and armature iron plate 5 are drawn back again, and then be pulled together, is by magnetic attracting together so that both to be described to the student really.

In cooking-vessel, pour alcohol 5～10ml then into, after lighting cooking-vessel being moved into armature iron plate 5 belows heats it, after several seconds, originally the permanent magnet 4 that was pulled together separates with armature iron plate 5, and permanent magnet 4 is thus lifted to original position and follows clear and melodious sound simultaneously under the effect of extension spring.Showed that permanent magnet 4 has lost magnetic in the process of heating, thereby made the student understanding intuitively arranged adding the thermal demagnetization phenomenon.

Embodiment recited above is described preferred implementation of the present invention, is not that design of the present invention and scope are limited.Under the prerequisite that does not break away from design concept of the present invention; various modification and improvement that this area ordinary person makes technical scheme of the present invention; all should drop into protection scope of the present invention, the technology contents that the present invention asks for protection all is documented in claims.

Claims

1. one kind adds the thermal demagnetization demonstration device, it is characterized in that: comprise on " ∏ " type base (1), " L " type support (2) is installed, hang a spring (3) on it, spring (3) lower end hangs the permanent magnet (4) of a rectangle low curie point; It is relative with permanent magnet on the base of permanent magnet (4) below " L " type armature iron plate (5) to be installed again, also comprises a cooking-vessel (6).

2. the thermal demagnetization demonstration device that adds according to claim 1 is characterized in that: described " ∏ " type base (1) is stainless steel, aluminium, copper, iron or other metal materials, also can be engineering plastics or other nonmetallic materials; Described " L " type support (2) adopts metal materials such as stainless steel, aluminium, copper.

3. the thermal demagnetization demonstration device that adds according to claim 1 is characterized in that: described spring (3) is the steel cylindroid helical-coil extension spring, external diameter 4.0～6.0mm, steel wire diameter 0.40～0.60mm, two buckle.

4. the thermal demagnetization demonstration device that adds according to claim 1, it is characterized in that: described permanent magnet (4) is the ferrite permanent magnet of low curie point, Curie point is 80～110 ℃, generally can select 103 ± 2 ℃ ferrite permanent magnet for use, and described " L " type armature iron plate (5) is a pure iron.

5. the thermal demagnetization demonstration device that adds according to claim 1 is characterized in that: described cooking-vessel (6) is a circular thin-wall metal box, adopts metal materials such as stainless steel, copper, and its lateral surface affixed adopts the metal bar (7) of same material as handle.