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A gas-liquid dispersion stirring device

The technology of a stirring device and agitator, which is applied to mixers with rotary stirring devices, transportation and packaging, mixers, etc., can solve the problems of low power consumption, unsatisfactory mixing performance and dispersion efficiency, and achieve enhanced gas holding performance. , Reduce cavitation and improve the effect of gas flooding

Active Publication Date: 2018-02-23
ZHENJIANG EAST BIOTECH EQUIP & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the BT-6 paddle has made great progress compared with the Rushton agitator, its overall mixing performance and dispersion efficiency have not yet met people's requirements. Therefore, it is necessary to design an agitator with lower power consumption and higher efficiency

Method used

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  • A gas-liquid dispersion stirring device
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  • A gas-liquid dispersion stirring device

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Embodiment 1: stirring device

[0050] Such as figure 1 , figure 2 and Figure 6 Shown, the agitator (30) involved in the present invention comprises an agitator (21), an agitator shaft (22) and a set of power unit (23), wherein the agitator (21) comprises a disc (19) , a hub (20) and several radially extending blades (18).

[0051] The blade (18) is obtained by increasing a certain thickness backward from the liquid-facing surface (16), and the blade (18) is obtained after thickening, and the back liquid surface (17) is obtained.

[0052] The axial section of blade (18) is V font, and the inner contour line of V font is called section line, and its shape can be parabola, hyperbola, ellipse arc and arc line etc., is good with parabola.

[0053] Such as image 3 and Figure 4 As shown, the horizontal plane where the center of the disk is located As the boundary, the section line can be divided into upper and lower parts. The intersection point of the upper and ...

Embodiment 2

[0072] Embodiment 2: the application of stirring device

[0073] The best agitating device of the embodiment of the present invention 1 is compared with traditional BT-6 type agitator, compares and carries out in the agitating tank that has standard ellipse head, and agitating tank diameter is 175mm, cylinder height 415mm, liquid volume 34L, the diameter of the stirrer is 60mm, and the stirring speed is 300r / min. The results show that the radial displacement of the stirring device of the present invention is 92% of that of the BT-6 type agitator, while the power consumption is 75% of that of the BT-6 type agitator, and the liquid discharge efficiency is 1.22 times of that of the BT-6 type agitator .

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Abstract

The invention discloses a gas-liquid dispersing and stirring device, which belongs to the technical field of fluid mixing. The blades of the stirring device of the present invention are composed of concave surfaces that extend radially and are highly contracted. The apex of the concave surface is located at the intersection of the concave surface and the plane of the disk, and diverges vertically along the tangential direction. The upper and lower parts of the concave inner edge curve are asymmetrical, and the upper half extends longer than the lower half, while the upper and lower parts of the concave outer edge curve are symmetrical, and the vertical height of the concave inner edge is greater than that of the outer edge, but The tangential overhang of the concave outer edge is greater than the tangential overhang of the inner edge. The inner side of the vane is good for capturing the rising air bubbles and dispersing them into the liquid phase. As the vane extends outward, its vertical height gradually shrinks. The stirring device of the present invention has lower power consumption, higher gas-liquid dispersion efficiency and mixing performance, and can disperse gas in a liquid phase system or a liquid-solid system with high efficiency and energy saving.

Description

technical field [0001] The invention relates to a gas-liquid dispersing and stirring device, which belongs to the technical field of fluid mixing. Background technique [0002] Gas-liquid dispersion is widely used in ventilation fermentation, biological aeration, gas-liquid reaction and gas-liquid-solid reaction and other processes. Engineers always expect to design a stirrer device that can fully disperse gas in liquid and save power consumption, and this idea has been realized with Rushton's design. [0003] In the 1950s, along with the large-scale production of penicillin, the flat-blade disc turbine impeller (also known as Rushton agitator) designed by American Rushton was widely used. This kind of agitator connects the disc to the stirring shaft by a hub, and several flat blades perpendicular to the disc are evenly distributed around the disc. The agitator is characterized by strong shearing action and good gas-liquid dispersion effect. [0004] Rushton mixers are po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18B01F7/16B01F3/04
CPCB01J19/0066B01J19/18B01J2219/185B01F23/23B01F27/11B01F27/80
Inventor 郑志永孙东东詹晓北章文劼章金元高敏杰
Owner ZHENJIANG EAST BIOTECH EQUIP & TECH
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