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Switch-controllable and magnetic field strength-adjustable permanent magnet device

A technology of magnetic field strength and permanent magnet device, applied in the direction of permanent magnets, etc., can solve the problems of unfavorable spectral analysis of different metal elements, not well adjusted magnetic field strength, unable to adjust Zeeman magnetic field strength, etc., to achieve a wide range of use and safety. The effect of improved performance and improved energy saving effect

Active Publication Date: 2015-02-25
SHANGHAI JIELING MAGNETIC MATERIAL & DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional Zeeman magnetic field components can only provide a constant magnetic field strength, and there is no good solution for adjusting the magnetic field strength, which is not conducive to the spectral analysis of different metal elements
The existing series of products of major companies including Japan and China cannot adjust the strength of the Zeeman magnetic field.
At present, the products of Jena in Germany and PE in the United States have the function of adjusting the magnetic field strength by using the structure of electromagnetic coils. more complicated

Method used

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  • Switch-controllable and magnetic field strength-adjustable permanent magnet device

Examples

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Effect test

Embodiment 1

[0039] A switch-controllable permanent magnet device with adjustable magnetic field strength, its structure is as follows image 3 As shown, it is composed of a magnet, a pole piece 2 and a yoke 3. There are two magnets, which are connected in series through the yoke 3. The pole piece 2 is arranged on the top of the magnet, and an air gap 4 is formed between the two pole pieces 2. The magnet is composed of a fixed magnet 5 and a movable magnet 6 connected in parallel, the fixed magnet 5 is connected in parallel on both sides of the movable magnet 6, wherein the magnetization direction and position of the fixed magnet 5 remain unchanged, and the movable magnet 6 can rotate around the axis ,Such as Figure 4-6 shown. When the two poles of the movable magnet 6 are consistent with the two poles of the fixed magnet 5, the magnetic field strength of the air gap 4 reaches the maximum value. When the two poles of the movable magnet 6 are completely opposite to those of the fixed mag...

Embodiment 2

[0042] A switch-controllable permanent magnet device with adjustable magnetic field strength, its structure is as follows Figure 7-8 As shown, its structure is basically the same as that of the device in Example 1, the difference is that the movable magnet 6 is installed on the side of the device, which is suitable for occasions where the front space is limited. This kind of permanent magnet device can be used in Zeeman atomic absorption in the spectrometer.

Embodiment 3

[0044] A switch-controllable permanent magnet device with adjustable magnetic field strength, its structure is as follows Figure 9 As shown, its structure is basically the same as the device of Embodiment 1, except that the thickness of the movable magnet 6 is greater than that of the fixed magnet 5, and the movable magnet is composed of a magnet and a magnetizer and rotates together. The permanent magnet device can be applied in the heat treatment magnetic field.

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PUM

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Abstract

The invention relates to a switch-controllable and magnetic field strength-adjustable permanent magnet device which comprises a movable magnet, fixed magnets, pole shoes and a magnet yoke. The fixed magnets are parallelly disposed on the single side or on two sides of the movable magnet to form a magnet component. The magnet component is serially connected with the magnet yoke. The pole shoes are disposed at the top of the magnet component. An air gap is formed between the two pole shoes. The magnetization directions and positions of the fixed magnets keep unchanged, and the movable magnet can rotate around a rotary shaft. Compared with the prior art, the switch-controllable and magnetic field strength-adjustable permanent magnet device is wide in application range, green and energy saving, safe and reliable, small in product size, and the like.

Description

technical field [0001] The invention relates to a permanent magnet device, in particular to a permanent magnet device with adjustable switch-controllable magnetic field strength. Background technique [0002] A permanent magnet circuit is usually composed of a magnet 1, a pole shoe 2, a yoke 3, and an air gap 4. A typical static permanent magnet circuit is as follows: figure 1 shown. Due to the fixed magnetic circuit structure, the magnetic field strength in the air gap is also a fixed value. [0003] The magnetomotive force is generated by the magnet in the permanent magnetic circuit, and the magnetic conduction is carried out through the yoke, and a working magnetic field is formed at the air gap between the pole pieces. According to different application occasions, permanent magnet magnetic circuits have many different structures, which can be summarized into the following two categories: [0004] (1) Static permanent magnet magnetic circuit: through the fixed magnetic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F7/02
Inventor 张慧欣张诗渊
Owner SHANGHAI JIELING MAGNETIC MATERIAL & DEVICES
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