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Magnetic Suspension Magnetic Stirrer

The technology of a magnetic stirring device and magnetron is applied in the directions of mixer accessories, chemical instruments and methods, dissolution, etc., and can solve the problems such as external dust and other impurities easily entering the reaction container, leakage of volatile substances, poor sealing effect, etc. Achieve the effect of weakening direct heating/cooling inertia, avoiding grinding damage, and reducing direct contact collisions

Inactive Publication Date: 2015-11-11
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the mechanical stirring shaft extends to the outside of the reaction vessel and is connected to the stirring motor, the periodic rotation of the stirring shaft itself makes the sealing effect with the reaction vessel poor
The volatile substances in the reaction vessel can easily leak out through the gap between the rotating shaft and the reaction vessel, and impurities such as external dust can also easily enter the reaction vessel
In addition, mechanical stirring needs to be equipped with an additional stirring motor and speed controller, which occupies a large area and is cumbersome to install

Method used

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  • Magnetic Suspension Magnetic Stirrer
  • Magnetic Suspension Magnetic Stirrer
  • Magnetic Suspension Magnetic Stirrer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 As shown, in the magnetic stirrer, the built-in magnet (4) is set inside the stirring tube (5) close to the inner bottom surface, and the built-in magnet (4) is connected with the stirring bar of the motor (10); the stirring magnet (3) is connected with the built-in The distance between the magnets (4) is small, and they are firmly attracted to each other, and the stirring magnets (3) are meshed and connected with the outer bottom surface of the stirring tube (5). The stirring tube (5) is located in the center of the sealing cover (7), and its position can be adjusted up and down, read from the scale line on the side wall of the stirring tube (5). When the instrument is running, the speed governor (1) controls the rotation speed of the motor (10) to further control the rotation of the stirring magnet (3). The circulating medium flows into the stirring tube (5) through the inlet (8). On the one hand, the temperature of the material in the reaction vesse...

Embodiment 2

[0032] Such as Figure 5 As shown, in the magnetic stirrer, the built-in magnet (4) is arranged on the inner bottom surface of the stirring tube (5); the distance between the stirring magnet (3) and the built-in magnet (4) is small, and they are firmly attracted to each other. The stirring magnet (3) is meshed with the outer bottom surface of the stirring tube (5). The stirring tube (5) is located in the center of the sealing cover (7), and its position can be adjusted up and down, read from the scale line on the side wall of the stirring tube (5). When the instrument is running, adjust the stirring tube (5) to a suitable position. On the one hand, because the built-in magnet (4) has a strong magnetic force, it can firmly attract the stirring magnet (3) to prevent it from falling. On the other hand, the stirring magnet (3) There is a certain attraction between the permanent magnet (2), the permanent magnet (2) can drive the stirring magnet (3) and the built-in magnet (4) to r...

Embodiment 3

[0035] Such as Figure 8 As shown, in the magnetic stirrer, there is no built-in magnet (4); the stirring magnet (3) is engaged with the outer bottom surface of the stirring tube (5) and suspended. The stirring tube (5) is located in the center of the sealing cover (7), and its position can be adjusted up and down, read from the scale line on the side wall of the stirring tube (5). When the instrument is running, adjust the stirring tube (5) to a proper position so that the permanent magnet (2) can drive the stirring magnet (3) to rotate, and the governor (1) controls the rotational speed of the permanent magnet (2). The circulating medium flows into the stirring tube (5) through the inlet (8). On the one hand, the temperature of the material in the reaction vessel is adjusted, and on the other hand, the friction between the built-in magnet and the inner bottom surface is weakened, which is beneficial to stable rotation.

[0036] According to the meshing mode of the stirring ...

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PUM

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Abstract

The invention discloses a magnetic stirring device. According to the magnetic stirring device, a sealing cover is arranged on the upper part of a reaction container; a stirring pipe which can slide up and down along the sealing cover is located at the center of the sealing cover; a stirring magneton is engaged with the outer bottom face of the stirring pipe; the stirring magneton is driven to rotate by an internally-arranged magneton arranged at the bottom in the stirring pipe or a permanent magnet arranged at the bottom outside the reaction container. The stirring magneton is located at the central position of the reaction container and is located below the outer bottom face of the stirring pipe; grains cannot be gathered to the center of the reaction container so that the direct contact and collision between the magneton and the solid grains can be greatly reduced; furthermore, the grains cannot be gathered towards a grinding region on the outer bottom face of the stirring pipe so as to prevent the stirring magneton from grinding and damaging the solid grains.

Description

technical field [0001] The invention relates to a magnetic stirring device, which belongs to the technical field of chemical and chemical equipment. technical background [0002] Magnetic stirrers are suitable for stirring liquids with low viscosity or liquid-solid mixtures. When in use, the magnetron is placed in the liquid in the reaction vessel and is attracted by the permanent magnet under the panel. When the permanent magnet rotates, the attraction of the magnetic field drives the magnet to perform circular motion so as to achieve the purpose of stirring. [0003] When the current magnetic stirrer is in use, the magnet is generally located at the bottom of the reaction vessel, and can form an obvious friction area with the bottom surface of the reaction vessel when rotating. During the stirring process, solid particles accumulate to the bottom of the reaction vessel because their density is generally higher than that of liquid, which easily causes direct contact and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F13/08B01F15/06
Inventor 于秋硕马晓迅
Owner NORTHWEST UNIV