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A powder-liquid stirring and mixing device based on magnetic drive

A magnetic drive, stirring and mixing technology, applied in the direction of mixers, mixing methods, mixer accessories, etc., can solve the problems of low mixing efficiency, slow mixing speed, uneven mixing, etc., to improve mixing efficiency, promote mixing, and realize the effect of rotation Effect

Active Publication Date: 2021-11-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing mixing and mixing equipment is prone to problems such as uneven mixing, slow mixing speed, low mixing efficiency, and high energy consumption.

Method used

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  • A powder-liquid stirring and mixing device based on magnetic drive
  • A powder-liquid stirring and mixing device based on magnetic drive
  • A powder-liquid stirring and mixing device based on magnetic drive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 1-3 As shown, a stirring and mixing device based on magnetic drive includes a fluid mixing chamber 4, an upper feed flow channel 1 is provided above the fluid mixing chamber 4, and a discharge flow channel 7 is provided at the lower part of the fluid mixing chamber 4. The fluid mixing chamber There is a tangential feed channel 3 on the side wall of the body 4, and a plurality of tangential feed channels 3 can be provided as required, and a magnetically driven turbulence assembly is provided inside the fluid mixing chamber 4.

[0037] The fluid mixing chamber 4 includes a rubber layer and a metal layer, the inner layer is the metal layer, the rubber layer is the outer layer, and the rubber layer covers the outside of the metal layer. The cross section of the fluid mixing chamber 4 is circular, which is convenient for connecting with the external flow channel. There is also a filter 2 at the feed inlet of the tangential feed channel 3 . There is also an ...

Embodiment 2

[0048] The difference between this embodiment and Embodiment 1 is that the fluid mixing chamber 4 is placed in a vertical magnetic field, and the magnetic field changes with a certain period, such as a sinusoidal period. The blade 5 is a magnetic blade 5, and the magnetic blade 5 is strung on the spoiler bar 8 and can slide up and down along the spoiler bar 8. The spoiler bar 8 has a vertical strip groove or a strip flange, There is a through hole in the middle part of the blade 5; when there is a vertical strip groove on the spoiler bar 8, there is a protrusion in the through hole, and the protrusion is stuck in the adjustment groove; when the spoiler bar 8 has a vertical strip When the flange is shaped, the shape of the through hole is the same as the cross section of the spoiler bar 8. Under the impact force of the fluid, buoyancy, its own gravity and the magnetic force of the external magnetic field, the blade 5 slides up and down along the chute on the string rod of the b...

Embodiment 3

[0050] In order to explore the mixing effect of the device of the present invention, the COMSOL Multiphysics 5.4 software was used to simulate the entire model. The rotational speed of the magnetic rod and the spoiler set is set at 200RPM, and the magnetic field strength used is 0.145T.

[0051] The concentration value of the diagonal line of the outlet section is selected as a data set, and the mixing intensity is characterized by mixing uniformity and mixing time. The mixing uniformity can better describe the mixing effect of the fluid in the mixing chamber, which can be calculated by formula (1).

[0052]

[0053] In the formula: S c ——mixing uniformity; N——total number of sampling points; c i - normalized concentration on node i; —The expected value of the normalized concentration of the sampling node, which is taken as 0.5.

[0054] Mixing time can describe the speed of mixing, which can be calculated by formula (2).

[0055]

[0056] In the formula: T - mixin...

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Abstract

A powder-liquid stirring and mixing device based on magnetic drive, comprising a fluid mixing chamber, an upper feed channel is provided above the fluid mixing chamber, a discharge channel is provided at the lower part of the fluid mixing chamber, and a cutout is provided on the side wall of the fluid mixing chamber. To the feed channel, there is a magnetically driven turbulence component in the fluid mixing chamber. In the present invention, a bell-shaped flow divider is arranged at the entrance, which makes full use of the space of the mixing chamber and increases the mixing area of ​​the fluid. The invention is driven by electromagnetic force, which can not only realize the rotation of the magnetic bar and the spoiler bar group, but also can make the vanes move longitudinally, which increases the disturbance of the fluid and further promotes the mixing. Greatly improve the upper and lower stratification of the fluid, so that the fluid concentration is basically uniform. The device of the invention skillfully utilizes the working principle of the brushless motor, and realizes the rotation effect of the magnetic rod without using the motor. The size and cost of the device are reduced, and problems such as sealing caused by installing the motor are avoided.

Description

technical field [0001] The invention belongs to the technical field of stirring equipment, and in particular relates to a magnetically driven powder-liquid stirring and mixing device. Background technique [0002] Powder-liquid mixing is mainly used in food, pharmaceutical, chemical, environmental protection and other industries. For example, the specialty coatings industry needs to mix fine paints for painting production. The so-called coating refers to covering the metal and non-metal surfaces with protective or decorative layers. With the development of industrial technology, coating has developed from manual to industrial automation, and the degree of automation is getting higher and higher, so the application of coating production lines is becoming more and more extensive, and has penetrated into many fields of the national economy. Powder-liquid mixing technology is the key to restrict the development of coating technology. For example, ceramic particles are used as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/12B01F13/08B01F13/10B01F15/02B01F15/00
CPCB01F23/53B01F33/4531B01F33/821B01F35/32005B01F35/3204B01F35/712B01F35/7547
Inventor 程洋俞建峰吴炀罗远洋黄铭苑轶李红昌
Owner JIANGNAN UNIV
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