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Draining stirring paddle

A stirring paddle and flow-through technology, which is applied in the field of stirring paddles, can solve the problems of low stirring efficiency, achieve high stirring efficiency, improve mixing effect, and shorten mixing time

Active Publication Date: 2018-07-06
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a through-flow stirring paddle to solve the problem of low stirring efficiency in existing stirring equipment for enhanced chaotic mixing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The stirred tank (not shown in the figure) reactor has a diameter of 240 mm and a height of 300 mm. Four baffles are installed away from the wall, and the baffles are 300 mm high and 20 mm wide. The top view of the through-flow paddle blade 3 is a broken line (ie figure 2 ), the angle α between two adjacent broken lines is 45°, the diameter of the through-flow hole 31 is 5 mm, and the center-to-center distance between two adjacent through-flow holes 31 is 10 mm. The paddle diameter of the paddle 3 is 80 mm, the paddle height is 24 mm, the number of blades of the paddle 3 is 6, and the height of the paddle 3 from the bottom is 80 mm.

[0034] Figure 5 It is a structural schematic diagram of the through-flow stirring paddle in the prior art, and its difference from the through-flow stirring paddle provided by the present invention is that the shape of the paddle 3 in the present invention is a wave-shaped structure, while the through-flow stirring paddle in the prior a...

Embodiment 2

[0040] Other conditions are the same as in Example 1, except that the diameter of the through-flow hole 31 is 6mm. The results of the comparative experiment are shown in Table 2.

[0041] Table 2 Performance comparison between the existing through-flow propeller and the high-efficiency through-flow propeller of the present invention

[0042]

[0043] It can be seen from the experimental results in Table 2 that at the same stirring speed, the mixing time of the through-flow stirring blade of the present invention is shortened by 12.75% compared with the existing through-flow stirring blade.

Embodiment 3

[0045] Other conditions are the same as in Example 1, except that the shape of the through-flow stirring paddle 3 is arc-shaped, and the results of the comparative experiment are shown in Table 3.

[0046] Table 3 Performance comparison between the existing through-flow paddle and the high-efficiency through-flow paddle of the present invention

[0047]

[0048] It can be seen from the experimental results in Table 3 that at the same stirring speed, the mixing time of the through-flow stirring blade of the present invention is shortened by 11.82% compared with the existing through-flow stirring blade.

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Abstract

The invention belongs to the technical field of stirring paddles and discloses a draining stirring paddle. The draining stirring paddle comprises a stirring shaft, a disc and paddles, wherein the center of the disc is sheathed on the stirring shaft; the paddles are arranged on the disc along the circumferential direction, draining holes are formed on the surfaces of the paddles and the surfaces ofthe paddles are the wavy structures. The draining stirring paddle disclosed by the invention has the beneficial effects that in the rotation process of the high-efficiency draining stirring paddle, after penetrating through the draining holes, fluid can form numerous high-speed jets behind the paddles with the wavy structures, and also can form impact flow to damage the periodic motion of fluid in a mixed isolation area, so that the speed gradient of the fluid in a stirring groove is increased, the mixing effect of materials is improved, the mixing time of the materials is shortened, and compared with the existing stirring equipment, the draining stirring paddle has higher stirring efficiency.

Description

technical field [0001] The invention relates to the technical field of stirring paddles, in particular to a through-flow stirring paddle. Background technique [0002] The paddle is the core component of the agitator, and its configuration (the paddle itself and the combination of multiple paddles) and operation (speed and installation position, etc.) are important factors affecting the performance of the agitator. At present, according to the classification of the fluid flow state in the agitator, the agitating paddles can be divided into axial paddles, radial paddles and mixing paddles, and each type of paddle includes many paddle types with different structures. When selecting the type of stirring impeller, it is necessary to comprehensively consider the properties of the stirring medium (such as viscosity, density and corrosiveness, etc.), the characteristics of the reaction process (such as intermittent or continuous, endothermic or exothermic), stirring effect and stir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F7/00
CPCB01F27/0722B01F27/1123B01F27/074B01F27/11251
Inventor 杨超张庆华毛在砂李向阳程景才冯鑫段晓霞
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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